2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/dmi.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
37 #include <drm/i915_drm.h>
39 #include "i915_trace.h"
40 #include <drm/drm_atomic.h>
41 #include <drm/drm_atomic_helper.h>
42 #include <drm/drm_dp_helper.h>
43 #include <drm/drm_crtc_helper.h>
44 #include <drm/drm_plane_helper.h>
45 #include <drm/drm_rect.h>
46 #include <linux/dma_remapping.h>
48 /* Primary plane formats for gen <= 3 */
49 static const uint32_t i8xx_primary_formats[] = {
56 /* Primary plane formats for gen >= 4 */
57 static const uint32_t i965_primary_formats[] = {
62 DRM_FORMAT_XRGB2101010,
63 DRM_FORMAT_XBGR2101010,
66 static const uint32_t skl_primary_formats[] = {
73 DRM_FORMAT_XRGB2101010,
74 DRM_FORMAT_XBGR2101010,
78 static const uint32_t intel_cursor_formats[] = {
82 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
84 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
85 struct intel_crtc_state *pipe_config);
86 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
87 struct intel_crtc_state *pipe_config);
89 static int intel_framebuffer_init(struct drm_device *dev,
90 struct intel_framebuffer *ifb,
91 struct drm_mode_fb_cmd2 *mode_cmd,
92 struct drm_i915_gem_object *obj);
93 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
94 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
95 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
96 struct intel_link_m_n *m_n,
97 struct intel_link_m_n *m2_n2);
98 static void ironlake_set_pipeconf(struct drm_crtc *crtc);
99 static void haswell_set_pipeconf(struct drm_crtc *crtc);
100 static void intel_set_pipe_csc(struct drm_crtc *crtc);
101 static void vlv_prepare_pll(struct intel_crtc *crtc,
102 const struct intel_crtc_state *pipe_config);
103 static void chv_prepare_pll(struct intel_crtc *crtc,
104 const struct intel_crtc_state *pipe_config);
105 static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
106 static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
107 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
108 struct intel_crtc_state *crtc_state);
109 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
111 static void intel_modeset_setup_hw_state(struct drm_device *dev);
119 int p2_slow, p2_fast;
122 typedef struct intel_limit intel_limit_t;
124 intel_range_t dot, vco, n, m, m1, m2, p, p1;
129 intel_pch_rawclk(struct drm_device *dev)
131 struct drm_i915_private *dev_priv = dev->dev_private;
133 WARN_ON(!HAS_PCH_SPLIT(dev));
135 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
138 static inline u32 /* units of 100MHz */
139 intel_fdi_link_freq(struct drm_device *dev)
142 struct drm_i915_private *dev_priv = dev->dev_private;
143 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
148 static const intel_limit_t intel_limits_i8xx_dac = {
149 .dot = { .min = 25000, .max = 350000 },
150 .vco = { .min = 908000, .max = 1512000 },
151 .n = { .min = 2, .max = 16 },
152 .m = { .min = 96, .max = 140 },
153 .m1 = { .min = 18, .max = 26 },
154 .m2 = { .min = 6, .max = 16 },
155 .p = { .min = 4, .max = 128 },
156 .p1 = { .min = 2, .max = 33 },
157 .p2 = { .dot_limit = 165000,
158 .p2_slow = 4, .p2_fast = 2 },
161 static const intel_limit_t intel_limits_i8xx_dvo = {
162 .dot = { .min = 25000, .max = 350000 },
163 .vco = { .min = 908000, .max = 1512000 },
164 .n = { .min = 2, .max = 16 },
165 .m = { .min = 96, .max = 140 },
166 .m1 = { .min = 18, .max = 26 },
167 .m2 = { .min = 6, .max = 16 },
168 .p = { .min = 4, .max = 128 },
169 .p1 = { .min = 2, .max = 33 },
170 .p2 = { .dot_limit = 165000,
171 .p2_slow = 4, .p2_fast = 4 },
174 static const intel_limit_t intel_limits_i8xx_lvds = {
175 .dot = { .min = 25000, .max = 350000 },
176 .vco = { .min = 908000, .max = 1512000 },
177 .n = { .min = 2, .max = 16 },
178 .m = { .min = 96, .max = 140 },
179 .m1 = { .min = 18, .max = 26 },
180 .m2 = { .min = 6, .max = 16 },
181 .p = { .min = 4, .max = 128 },
182 .p1 = { .min = 1, .max = 6 },
183 .p2 = { .dot_limit = 165000,
184 .p2_slow = 14, .p2_fast = 7 },
187 static const intel_limit_t intel_limits_i9xx_sdvo = {
188 .dot = { .min = 20000, .max = 400000 },
189 .vco = { .min = 1400000, .max = 2800000 },
190 .n = { .min = 1, .max = 6 },
191 .m = { .min = 70, .max = 120 },
192 .m1 = { .min = 8, .max = 18 },
193 .m2 = { .min = 3, .max = 7 },
194 .p = { .min = 5, .max = 80 },
195 .p1 = { .min = 1, .max = 8 },
196 .p2 = { .dot_limit = 200000,
197 .p2_slow = 10, .p2_fast = 5 },
200 static const intel_limit_t intel_limits_i9xx_lvds = {
201 .dot = { .min = 20000, .max = 400000 },
202 .vco = { .min = 1400000, .max = 2800000 },
203 .n = { .min = 1, .max = 6 },
204 .m = { .min = 70, .max = 120 },
205 .m1 = { .min = 8, .max = 18 },
206 .m2 = { .min = 3, .max = 7 },
207 .p = { .min = 7, .max = 98 },
208 .p1 = { .min = 1, .max = 8 },
209 .p2 = { .dot_limit = 112000,
210 .p2_slow = 14, .p2_fast = 7 },
214 static const intel_limit_t intel_limits_g4x_sdvo = {
215 .dot = { .min = 25000, .max = 270000 },
216 .vco = { .min = 1750000, .max = 3500000},
217 .n = { .min = 1, .max = 4 },
218 .m = { .min = 104, .max = 138 },
219 .m1 = { .min = 17, .max = 23 },
220 .m2 = { .min = 5, .max = 11 },
221 .p = { .min = 10, .max = 30 },
222 .p1 = { .min = 1, .max = 3},
223 .p2 = { .dot_limit = 270000,
229 static const intel_limit_t intel_limits_g4x_hdmi = {
230 .dot = { .min = 22000, .max = 400000 },
231 .vco = { .min = 1750000, .max = 3500000},
232 .n = { .min = 1, .max = 4 },
233 .m = { .min = 104, .max = 138 },
234 .m1 = { .min = 16, .max = 23 },
235 .m2 = { .min = 5, .max = 11 },
236 .p = { .min = 5, .max = 80 },
237 .p1 = { .min = 1, .max = 8},
238 .p2 = { .dot_limit = 165000,
239 .p2_slow = 10, .p2_fast = 5 },
242 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
243 .dot = { .min = 20000, .max = 115000 },
244 .vco = { .min = 1750000, .max = 3500000 },
245 .n = { .min = 1, .max = 3 },
246 .m = { .min = 104, .max = 138 },
247 .m1 = { .min = 17, .max = 23 },
248 .m2 = { .min = 5, .max = 11 },
249 .p = { .min = 28, .max = 112 },
250 .p1 = { .min = 2, .max = 8 },
251 .p2 = { .dot_limit = 0,
252 .p2_slow = 14, .p2_fast = 14
256 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
257 .dot = { .min = 80000, .max = 224000 },
258 .vco = { .min = 1750000, .max = 3500000 },
259 .n = { .min = 1, .max = 3 },
260 .m = { .min = 104, .max = 138 },
261 .m1 = { .min = 17, .max = 23 },
262 .m2 = { .min = 5, .max = 11 },
263 .p = { .min = 14, .max = 42 },
264 .p1 = { .min = 2, .max = 6 },
265 .p2 = { .dot_limit = 0,
266 .p2_slow = 7, .p2_fast = 7
270 static const intel_limit_t intel_limits_pineview_sdvo = {
271 .dot = { .min = 20000, .max = 400000},
272 .vco = { .min = 1700000, .max = 3500000 },
273 /* Pineview's Ncounter is a ring counter */
274 .n = { .min = 3, .max = 6 },
275 .m = { .min = 2, .max = 256 },
276 /* Pineview only has one combined m divider, which we treat as m2. */
277 .m1 = { .min = 0, .max = 0 },
278 .m2 = { .min = 0, .max = 254 },
279 .p = { .min = 5, .max = 80 },
280 .p1 = { .min = 1, .max = 8 },
281 .p2 = { .dot_limit = 200000,
282 .p2_slow = 10, .p2_fast = 5 },
285 static const intel_limit_t intel_limits_pineview_lvds = {
286 .dot = { .min = 20000, .max = 400000 },
287 .vco = { .min = 1700000, .max = 3500000 },
288 .n = { .min = 3, .max = 6 },
289 .m = { .min = 2, .max = 256 },
290 .m1 = { .min = 0, .max = 0 },
291 .m2 = { .min = 0, .max = 254 },
292 .p = { .min = 7, .max = 112 },
293 .p1 = { .min = 1, .max = 8 },
294 .p2 = { .dot_limit = 112000,
295 .p2_slow = 14, .p2_fast = 14 },
298 /* Ironlake / Sandybridge
300 * We calculate clock using (register_value + 2) for N/M1/M2, so here
301 * the range value for them is (actual_value - 2).
303 static const intel_limit_t intel_limits_ironlake_dac = {
304 .dot = { .min = 25000, .max = 350000 },
305 .vco = { .min = 1760000, .max = 3510000 },
306 .n = { .min = 1, .max = 5 },
307 .m = { .min = 79, .max = 127 },
308 .m1 = { .min = 12, .max = 22 },
309 .m2 = { .min = 5, .max = 9 },
310 .p = { .min = 5, .max = 80 },
311 .p1 = { .min = 1, .max = 8 },
312 .p2 = { .dot_limit = 225000,
313 .p2_slow = 10, .p2_fast = 5 },
316 static const intel_limit_t intel_limits_ironlake_single_lvds = {
317 .dot = { .min = 25000, .max = 350000 },
318 .vco = { .min = 1760000, .max = 3510000 },
319 .n = { .min = 1, .max = 3 },
320 .m = { .min = 79, .max = 118 },
321 .m1 = { .min = 12, .max = 22 },
322 .m2 = { .min = 5, .max = 9 },
323 .p = { .min = 28, .max = 112 },
324 .p1 = { .min = 2, .max = 8 },
325 .p2 = { .dot_limit = 225000,
326 .p2_slow = 14, .p2_fast = 14 },
329 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
330 .dot = { .min = 25000, .max = 350000 },
331 .vco = { .min = 1760000, .max = 3510000 },
332 .n = { .min = 1, .max = 3 },
333 .m = { .min = 79, .max = 127 },
334 .m1 = { .min = 12, .max = 22 },
335 .m2 = { .min = 5, .max = 9 },
336 .p = { .min = 14, .max = 56 },
337 .p1 = { .min = 2, .max = 8 },
338 .p2 = { .dot_limit = 225000,
339 .p2_slow = 7, .p2_fast = 7 },
342 /* LVDS 100mhz refclk limits. */
343 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
344 .dot = { .min = 25000, .max = 350000 },
345 .vco = { .min = 1760000, .max = 3510000 },
346 .n = { .min = 1, .max = 2 },
347 .m = { .min = 79, .max = 126 },
348 .m1 = { .min = 12, .max = 22 },
349 .m2 = { .min = 5, .max = 9 },
350 .p = { .min = 28, .max = 112 },
351 .p1 = { .min = 2, .max = 8 },
352 .p2 = { .dot_limit = 225000,
353 .p2_slow = 14, .p2_fast = 14 },
356 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
357 .dot = { .min = 25000, .max = 350000 },
358 .vco = { .min = 1760000, .max = 3510000 },
359 .n = { .min = 1, .max = 3 },
360 .m = { .min = 79, .max = 126 },
361 .m1 = { .min = 12, .max = 22 },
362 .m2 = { .min = 5, .max = 9 },
363 .p = { .min = 14, .max = 42 },
364 .p1 = { .min = 2, .max = 6 },
365 .p2 = { .dot_limit = 225000,
366 .p2_slow = 7, .p2_fast = 7 },
369 static const intel_limit_t intel_limits_vlv = {
371 * These are the data rate limits (measured in fast clocks)
372 * since those are the strictest limits we have. The fast
373 * clock and actual rate limits are more relaxed, so checking
374 * them would make no difference.
376 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
377 .vco = { .min = 4000000, .max = 6000000 },
378 .n = { .min = 1, .max = 7 },
379 .m1 = { .min = 2, .max = 3 },
380 .m2 = { .min = 11, .max = 156 },
381 .p1 = { .min = 2, .max = 3 },
382 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
385 static const intel_limit_t intel_limits_chv = {
387 * These are the data rate limits (measured in fast clocks)
388 * since those are the strictest limits we have. The fast
389 * clock and actual rate limits are more relaxed, so checking
390 * them would make no difference.
392 .dot = { .min = 25000 * 5, .max = 540000 * 5},
393 .vco = { .min = 4800000, .max = 6480000 },
394 .n = { .min = 1, .max = 1 },
395 .m1 = { .min = 2, .max = 2 },
396 .m2 = { .min = 24 << 22, .max = 175 << 22 },
397 .p1 = { .min = 2, .max = 4 },
398 .p2 = { .p2_slow = 1, .p2_fast = 14 },
401 static const intel_limit_t intel_limits_bxt = {
402 /* FIXME: find real dot limits */
403 .dot = { .min = 0, .max = INT_MAX },
404 .vco = { .min = 4800000, .max = 6700000 },
405 .n = { .min = 1, .max = 1 },
406 .m1 = { .min = 2, .max = 2 },
407 /* FIXME: find real m2 limits */
408 .m2 = { .min = 2 << 22, .max = 255 << 22 },
409 .p1 = { .min = 2, .max = 4 },
410 .p2 = { .p2_slow = 1, .p2_fast = 20 },
414 needs_modeset(struct drm_crtc_state *state)
416 return drm_atomic_crtc_needs_modeset(state);
420 * Returns whether any output on the specified pipe is of the specified type
422 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
424 struct drm_device *dev = crtc->base.dev;
425 struct intel_encoder *encoder;
427 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
428 if (encoder->type == type)
435 * Returns whether any output on the specified pipe will have the specified
436 * type after a staged modeset is complete, i.e., the same as
437 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
440 static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
443 struct drm_atomic_state *state = crtc_state->base.state;
444 struct drm_connector *connector;
445 struct drm_connector_state *connector_state;
446 struct intel_encoder *encoder;
447 int i, num_connectors = 0;
449 for_each_connector_in_state(state, connector, connector_state, i) {
450 if (connector_state->crtc != crtc_state->base.crtc)
455 encoder = to_intel_encoder(connector_state->best_encoder);
456 if (encoder->type == type)
460 WARN_ON(num_connectors == 0);
465 static const intel_limit_t *
466 intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
468 struct drm_device *dev = crtc_state->base.crtc->dev;
469 const intel_limit_t *limit;
471 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
472 if (intel_is_dual_link_lvds(dev)) {
473 if (refclk == 100000)
474 limit = &intel_limits_ironlake_dual_lvds_100m;
476 limit = &intel_limits_ironlake_dual_lvds;
478 if (refclk == 100000)
479 limit = &intel_limits_ironlake_single_lvds_100m;
481 limit = &intel_limits_ironlake_single_lvds;
484 limit = &intel_limits_ironlake_dac;
489 static const intel_limit_t *
490 intel_g4x_limit(struct intel_crtc_state *crtc_state)
492 struct drm_device *dev = crtc_state->base.crtc->dev;
493 const intel_limit_t *limit;
495 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
496 if (intel_is_dual_link_lvds(dev))
497 limit = &intel_limits_g4x_dual_channel_lvds;
499 limit = &intel_limits_g4x_single_channel_lvds;
500 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
501 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
502 limit = &intel_limits_g4x_hdmi;
503 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
504 limit = &intel_limits_g4x_sdvo;
505 } else /* The option is for other outputs */
506 limit = &intel_limits_i9xx_sdvo;
511 static const intel_limit_t *
512 intel_limit(struct intel_crtc_state *crtc_state, int refclk)
514 struct drm_device *dev = crtc_state->base.crtc->dev;
515 const intel_limit_t *limit;
518 limit = &intel_limits_bxt;
519 else if (HAS_PCH_SPLIT(dev))
520 limit = intel_ironlake_limit(crtc_state, refclk);
521 else if (IS_G4X(dev)) {
522 limit = intel_g4x_limit(crtc_state);
523 } else if (IS_PINEVIEW(dev)) {
524 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
525 limit = &intel_limits_pineview_lvds;
527 limit = &intel_limits_pineview_sdvo;
528 } else if (IS_CHERRYVIEW(dev)) {
529 limit = &intel_limits_chv;
530 } else if (IS_VALLEYVIEW(dev)) {
531 limit = &intel_limits_vlv;
532 } else if (!IS_GEN2(dev)) {
533 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
534 limit = &intel_limits_i9xx_lvds;
536 limit = &intel_limits_i9xx_sdvo;
538 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
539 limit = &intel_limits_i8xx_lvds;
540 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
541 limit = &intel_limits_i8xx_dvo;
543 limit = &intel_limits_i8xx_dac;
549 * Platform specific helpers to calculate the port PLL loopback- (clock.m),
550 * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
551 * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
552 * The helpers' return value is the rate of the clock that is fed to the
553 * display engine's pipe which can be the above fast dot clock rate or a
554 * divided-down version of it.
556 /* m1 is reserved as 0 in Pineview, n is a ring counter */
557 static int pnv_calc_dpll_params(int refclk, intel_clock_t *clock)
559 clock->m = clock->m2 + 2;
560 clock->p = clock->p1 * clock->p2;
561 if (WARN_ON(clock->n == 0 || clock->p == 0))
563 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
564 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
569 static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
571 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
574 static int i9xx_calc_dpll_params(int refclk, intel_clock_t *clock)
576 clock->m = i9xx_dpll_compute_m(clock);
577 clock->p = clock->p1 * clock->p2;
578 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
580 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
581 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
586 static int vlv_calc_dpll_params(int refclk, intel_clock_t *clock)
588 clock->m = clock->m1 * clock->m2;
589 clock->p = clock->p1 * clock->p2;
590 if (WARN_ON(clock->n == 0 || clock->p == 0))
592 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
593 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
595 return clock->dot / 5;
598 int chv_calc_dpll_params(int refclk, intel_clock_t *clock)
600 clock->m = clock->m1 * clock->m2;
601 clock->p = clock->p1 * clock->p2;
602 if (WARN_ON(clock->n == 0 || clock->p == 0))
604 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
606 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
608 return clock->dot / 5;
611 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
613 * Returns whether the given set of divisors are valid for a given refclk with
614 * the given connectors.
617 static bool intel_PLL_is_valid(struct drm_device *dev,
618 const intel_limit_t *limit,
619 const intel_clock_t *clock)
621 if (clock->n < limit->n.min || limit->n.max < clock->n)
622 INTELPllInvalid("n out of range\n");
623 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
624 INTELPllInvalid("p1 out of range\n");
625 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
626 INTELPllInvalid("m2 out of range\n");
627 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
628 INTELPllInvalid("m1 out of range\n");
630 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) && !IS_BROXTON(dev))
631 if (clock->m1 <= clock->m2)
632 INTELPllInvalid("m1 <= m2\n");
634 if (!IS_VALLEYVIEW(dev) && !IS_BROXTON(dev)) {
635 if (clock->p < limit->p.min || limit->p.max < clock->p)
636 INTELPllInvalid("p out of range\n");
637 if (clock->m < limit->m.min || limit->m.max < clock->m)
638 INTELPllInvalid("m out of range\n");
641 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
642 INTELPllInvalid("vco out of range\n");
643 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
644 * connector, etc., rather than just a single range.
646 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
647 INTELPllInvalid("dot out of range\n");
653 i9xx_select_p2_div(const intel_limit_t *limit,
654 const struct intel_crtc_state *crtc_state,
657 struct drm_device *dev = crtc_state->base.crtc->dev;
659 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
661 * For LVDS just rely on its current settings for dual-channel.
662 * We haven't figured out how to reliably set up different
663 * single/dual channel state, if we even can.
665 if (intel_is_dual_link_lvds(dev))
666 return limit->p2.p2_fast;
668 return limit->p2.p2_slow;
670 if (target < limit->p2.dot_limit)
671 return limit->p2.p2_slow;
673 return limit->p2.p2_fast;
678 i9xx_find_best_dpll(const intel_limit_t *limit,
679 struct intel_crtc_state *crtc_state,
680 int target, int refclk, intel_clock_t *match_clock,
681 intel_clock_t *best_clock)
683 struct drm_device *dev = crtc_state->base.crtc->dev;
687 memset(best_clock, 0, sizeof(*best_clock));
689 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
691 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
693 for (clock.m2 = limit->m2.min;
694 clock.m2 <= limit->m2.max; clock.m2++) {
695 if (clock.m2 >= clock.m1)
697 for (clock.n = limit->n.min;
698 clock.n <= limit->n.max; clock.n++) {
699 for (clock.p1 = limit->p1.min;
700 clock.p1 <= limit->p1.max; clock.p1++) {
703 i9xx_calc_dpll_params(refclk, &clock);
704 if (!intel_PLL_is_valid(dev, limit,
708 clock.p != match_clock->p)
711 this_err = abs(clock.dot - target);
712 if (this_err < err) {
721 return (err != target);
725 pnv_find_best_dpll(const intel_limit_t *limit,
726 struct intel_crtc_state *crtc_state,
727 int target, int refclk, intel_clock_t *match_clock,
728 intel_clock_t *best_clock)
730 struct drm_device *dev = crtc_state->base.crtc->dev;
734 memset(best_clock, 0, sizeof(*best_clock));
736 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
738 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
740 for (clock.m2 = limit->m2.min;
741 clock.m2 <= limit->m2.max; clock.m2++) {
742 for (clock.n = limit->n.min;
743 clock.n <= limit->n.max; clock.n++) {
744 for (clock.p1 = limit->p1.min;
745 clock.p1 <= limit->p1.max; clock.p1++) {
748 pnv_calc_dpll_params(refclk, &clock);
749 if (!intel_PLL_is_valid(dev, limit,
753 clock.p != match_clock->p)
756 this_err = abs(clock.dot - target);
757 if (this_err < err) {
766 return (err != target);
770 g4x_find_best_dpll(const intel_limit_t *limit,
771 struct intel_crtc_state *crtc_state,
772 int target, int refclk, intel_clock_t *match_clock,
773 intel_clock_t *best_clock)
775 struct drm_device *dev = crtc_state->base.crtc->dev;
779 /* approximately equals target * 0.00585 */
780 int err_most = (target >> 8) + (target >> 9);
782 memset(best_clock, 0, sizeof(*best_clock));
784 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
786 max_n = limit->n.max;
787 /* based on hardware requirement, prefer smaller n to precision */
788 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
789 /* based on hardware requirement, prefere larger m1,m2 */
790 for (clock.m1 = limit->m1.max;
791 clock.m1 >= limit->m1.min; clock.m1--) {
792 for (clock.m2 = limit->m2.max;
793 clock.m2 >= limit->m2.min; clock.m2--) {
794 for (clock.p1 = limit->p1.max;
795 clock.p1 >= limit->p1.min; clock.p1--) {
798 i9xx_calc_dpll_params(refclk, &clock);
799 if (!intel_PLL_is_valid(dev, limit,
803 this_err = abs(clock.dot - target);
804 if (this_err < err_most) {
818 * Check if the calculated PLL configuration is more optimal compared to the
819 * best configuration and error found so far. Return the calculated error.
821 static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
822 const intel_clock_t *calculated_clock,
823 const intel_clock_t *best_clock,
824 unsigned int best_error_ppm,
825 unsigned int *error_ppm)
828 * For CHV ignore the error and consider only the P value.
829 * Prefer a bigger P value based on HW requirements.
831 if (IS_CHERRYVIEW(dev)) {
834 return calculated_clock->p > best_clock->p;
837 if (WARN_ON_ONCE(!target_freq))
840 *error_ppm = div_u64(1000000ULL *
841 abs(target_freq - calculated_clock->dot),
844 * Prefer a better P value over a better (smaller) error if the error
845 * is small. Ensure this preference for future configurations too by
846 * setting the error to 0.
848 if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
854 return *error_ppm + 10 < best_error_ppm;
858 vlv_find_best_dpll(const intel_limit_t *limit,
859 struct intel_crtc_state *crtc_state,
860 int target, int refclk, intel_clock_t *match_clock,
861 intel_clock_t *best_clock)
863 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
864 struct drm_device *dev = crtc->base.dev;
866 unsigned int bestppm = 1000000;
867 /* min update 19.2 MHz */
868 int max_n = min(limit->n.max, refclk / 19200);
871 target *= 5; /* fast clock */
873 memset(best_clock, 0, sizeof(*best_clock));
875 /* based on hardware requirement, prefer smaller n to precision */
876 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
877 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
878 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
879 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
880 clock.p = clock.p1 * clock.p2;
881 /* based on hardware requirement, prefer bigger m1,m2 values */
882 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
885 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
888 vlv_calc_dpll_params(refclk, &clock);
890 if (!intel_PLL_is_valid(dev, limit,
894 if (!vlv_PLL_is_optimal(dev, target,
912 chv_find_best_dpll(const intel_limit_t *limit,
913 struct intel_crtc_state *crtc_state,
914 int target, int refclk, intel_clock_t *match_clock,
915 intel_clock_t *best_clock)
917 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
918 struct drm_device *dev = crtc->base.dev;
919 unsigned int best_error_ppm;
924 memset(best_clock, 0, sizeof(*best_clock));
925 best_error_ppm = 1000000;
928 * Based on hardware doc, the n always set to 1, and m1 always
929 * set to 2. If requires to support 200Mhz refclk, we need to
930 * revisit this because n may not 1 anymore.
932 clock.n = 1, clock.m1 = 2;
933 target *= 5; /* fast clock */
935 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
936 for (clock.p2 = limit->p2.p2_fast;
937 clock.p2 >= limit->p2.p2_slow;
938 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
939 unsigned int error_ppm;
941 clock.p = clock.p1 * clock.p2;
943 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
944 clock.n) << 22, refclk * clock.m1);
946 if (m2 > INT_MAX/clock.m1)
951 chv_calc_dpll_params(refclk, &clock);
953 if (!intel_PLL_is_valid(dev, limit, &clock))
956 if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
957 best_error_ppm, &error_ppm))
961 best_error_ppm = error_ppm;
969 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
970 intel_clock_t *best_clock)
972 int refclk = i9xx_get_refclk(crtc_state, 0);
974 return chv_find_best_dpll(intel_limit(crtc_state, refclk), crtc_state,
975 target_clock, refclk, NULL, best_clock);
978 bool intel_crtc_active(struct drm_crtc *crtc)
980 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
982 /* Be paranoid as we can arrive here with only partial
983 * state retrieved from the hardware during setup.
985 * We can ditch the adjusted_mode.crtc_clock check as soon
986 * as Haswell has gained clock readout/fastboot support.
988 * We can ditch the crtc->primary->fb check as soon as we can
989 * properly reconstruct framebuffers.
991 * FIXME: The intel_crtc->active here should be switched to
992 * crtc->state->active once we have proper CRTC states wired up
995 return intel_crtc->active && crtc->primary->state->fb &&
996 intel_crtc->config->base.adjusted_mode.crtc_clock;
999 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1002 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1003 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1005 return intel_crtc->config->cpu_transcoder;
1008 static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
1010 struct drm_i915_private *dev_priv = dev->dev_private;
1011 u32 reg = PIPEDSL(pipe);
1016 line_mask = DSL_LINEMASK_GEN2;
1018 line_mask = DSL_LINEMASK_GEN3;
1020 line1 = I915_READ(reg) & line_mask;
1022 line2 = I915_READ(reg) & line_mask;
1024 return line1 == line2;
1028 * intel_wait_for_pipe_off - wait for pipe to turn off
1029 * @crtc: crtc whose pipe to wait for
1031 * After disabling a pipe, we can't wait for vblank in the usual way,
1032 * spinning on the vblank interrupt status bit, since we won't actually
1033 * see an interrupt when the pipe is disabled.
1035 * On Gen4 and above:
1036 * wait for the pipe register state bit to turn off
1039 * wait for the display line value to settle (it usually
1040 * ends up stopping at the start of the next frame).
1043 static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
1045 struct drm_device *dev = crtc->base.dev;
1046 struct drm_i915_private *dev_priv = dev->dev_private;
1047 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
1048 enum pipe pipe = crtc->pipe;
1050 if (INTEL_INFO(dev)->gen >= 4) {
1051 int reg = PIPECONF(cpu_transcoder);
1053 /* Wait for the Pipe State to go off */
1054 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
1056 WARN(1, "pipe_off wait timed out\n");
1058 /* Wait for the display line to settle */
1059 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
1060 WARN(1, "pipe_off wait timed out\n");
1065 * ibx_digital_port_connected - is the specified port connected?
1066 * @dev_priv: i915 private structure
1067 * @port: the port to test
1069 * Returns true if @port is connected, false otherwise.
1071 bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
1072 struct intel_digital_port *port)
1076 if (HAS_PCH_IBX(dev_priv->dev)) {
1077 switch (port->port) {
1079 bit = SDE_PORTB_HOTPLUG;
1082 bit = SDE_PORTC_HOTPLUG;
1085 bit = SDE_PORTD_HOTPLUG;
1091 switch (port->port) {
1093 bit = SDE_PORTB_HOTPLUG_CPT;
1096 bit = SDE_PORTC_HOTPLUG_CPT;
1099 bit = SDE_PORTD_HOTPLUG_CPT;
1102 bit = SDE_PORTE_HOTPLUG_SPT;
1109 return I915_READ(SDEISR) & bit;
1112 static const char *state_string(bool enabled)
1114 return enabled ? "on" : "off";
1117 /* Only for pre-ILK configs */
1118 void assert_pll(struct drm_i915_private *dev_priv,
1119 enum pipe pipe, bool state)
1126 val = I915_READ(reg);
1127 cur_state = !!(val & DPLL_VCO_ENABLE);
1128 I915_STATE_WARN(cur_state != state,
1129 "PLL state assertion failure (expected %s, current %s)\n",
1130 state_string(state), state_string(cur_state));
1133 /* XXX: the dsi pll is shared between MIPI DSI ports */
1134 static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1139 mutex_lock(&dev_priv->sb_lock);
1140 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1141 mutex_unlock(&dev_priv->sb_lock);
1143 cur_state = val & DSI_PLL_VCO_EN;
1144 I915_STATE_WARN(cur_state != state,
1145 "DSI PLL state assertion failure (expected %s, current %s)\n",
1146 state_string(state), state_string(cur_state));
1148 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1149 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1151 struct intel_shared_dpll *
1152 intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
1154 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
1156 if (crtc->config->shared_dpll < 0)
1159 return &dev_priv->shared_dplls[crtc->config->shared_dpll];
1163 void assert_shared_dpll(struct drm_i915_private *dev_priv,
1164 struct intel_shared_dpll *pll,
1168 struct intel_dpll_hw_state hw_state;
1171 "asserting DPLL %s with no DPLL\n", state_string(state)))
1174 cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
1175 I915_STATE_WARN(cur_state != state,
1176 "%s assertion failure (expected %s, current %s)\n",
1177 pll->name, state_string(state), state_string(cur_state));
1180 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1181 enum pipe pipe, bool state)
1186 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1189 if (HAS_DDI(dev_priv->dev)) {
1190 /* DDI does not have a specific FDI_TX register */
1191 reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1192 val = I915_READ(reg);
1193 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1195 reg = FDI_TX_CTL(pipe);
1196 val = I915_READ(reg);
1197 cur_state = !!(val & FDI_TX_ENABLE);
1199 I915_STATE_WARN(cur_state != state,
1200 "FDI TX state assertion failure (expected %s, current %s)\n",
1201 state_string(state), state_string(cur_state));
1203 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1204 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1206 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1207 enum pipe pipe, bool state)
1213 reg = FDI_RX_CTL(pipe);
1214 val = I915_READ(reg);
1215 cur_state = !!(val & FDI_RX_ENABLE);
1216 I915_STATE_WARN(cur_state != state,
1217 "FDI RX state assertion failure (expected %s, current %s)\n",
1218 state_string(state), state_string(cur_state));
1220 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1221 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1223 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1229 /* ILK FDI PLL is always enabled */
1230 if (INTEL_INFO(dev_priv->dev)->gen == 5)
1233 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1234 if (HAS_DDI(dev_priv->dev))
1237 reg = FDI_TX_CTL(pipe);
1238 val = I915_READ(reg);
1239 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1242 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1243 enum pipe pipe, bool state)
1249 reg = FDI_RX_CTL(pipe);
1250 val = I915_READ(reg);
1251 cur_state = !!(val & FDI_RX_PLL_ENABLE);
1252 I915_STATE_WARN(cur_state != state,
1253 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1254 state_string(state), state_string(cur_state));
1257 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1260 struct drm_device *dev = dev_priv->dev;
1263 enum pipe panel_pipe = PIPE_A;
1266 if (WARN_ON(HAS_DDI(dev)))
1269 if (HAS_PCH_SPLIT(dev)) {
1272 pp_reg = PCH_PP_CONTROL;
1273 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1275 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1276 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1277 panel_pipe = PIPE_B;
1278 /* XXX: else fix for eDP */
1279 } else if (IS_VALLEYVIEW(dev)) {
1280 /* presumably write lock depends on pipe, not port select */
1281 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1284 pp_reg = PP_CONTROL;
1285 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1286 panel_pipe = PIPE_B;
1289 val = I915_READ(pp_reg);
1290 if (!(val & PANEL_POWER_ON) ||
1291 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1294 I915_STATE_WARN(panel_pipe == pipe && locked,
1295 "panel assertion failure, pipe %c regs locked\n",
1299 static void assert_cursor(struct drm_i915_private *dev_priv,
1300 enum pipe pipe, bool state)
1302 struct drm_device *dev = dev_priv->dev;
1305 if (IS_845G(dev) || IS_I865G(dev))
1306 cur_state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
1308 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
1310 I915_STATE_WARN(cur_state != state,
1311 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1312 pipe_name(pipe), state_string(state), state_string(cur_state));
1314 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1315 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1317 void assert_pipe(struct drm_i915_private *dev_priv,
1318 enum pipe pipe, bool state)
1323 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1326 /* if we need the pipe quirk it must be always on */
1327 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1328 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1331 if (!intel_display_power_is_enabled(dev_priv,
1332 POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
1335 reg = PIPECONF(cpu_transcoder);
1336 val = I915_READ(reg);
1337 cur_state = !!(val & PIPECONF_ENABLE);
1340 I915_STATE_WARN(cur_state != state,
1341 "pipe %c assertion failure (expected %s, current %s)\n",
1342 pipe_name(pipe), state_string(state), state_string(cur_state));
1345 static void assert_plane(struct drm_i915_private *dev_priv,
1346 enum plane plane, bool state)
1352 reg = DSPCNTR(plane);
1353 val = I915_READ(reg);
1354 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1355 I915_STATE_WARN(cur_state != state,
1356 "plane %c assertion failure (expected %s, current %s)\n",
1357 plane_name(plane), state_string(state), state_string(cur_state));
1360 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1361 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1363 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1366 struct drm_device *dev = dev_priv->dev;
1371 /* Primary planes are fixed to pipes on gen4+ */
1372 if (INTEL_INFO(dev)->gen >= 4) {
1373 reg = DSPCNTR(pipe);
1374 val = I915_READ(reg);
1375 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
1376 "plane %c assertion failure, should be disabled but not\n",
1381 /* Need to check both planes against the pipe */
1382 for_each_pipe(dev_priv, i) {
1384 val = I915_READ(reg);
1385 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1386 DISPPLANE_SEL_PIPE_SHIFT;
1387 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1388 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1389 plane_name(i), pipe_name(pipe));
1393 static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1396 struct drm_device *dev = dev_priv->dev;
1400 if (INTEL_INFO(dev)->gen >= 9) {
1401 for_each_sprite(dev_priv, pipe, sprite) {
1402 val = I915_READ(PLANE_CTL(pipe, sprite));
1403 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
1404 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1405 sprite, pipe_name(pipe));
1407 } else if (IS_VALLEYVIEW(dev)) {
1408 for_each_sprite(dev_priv, pipe, sprite) {
1409 reg = SPCNTR(pipe, sprite);
1410 val = I915_READ(reg);
1411 I915_STATE_WARN(val & SP_ENABLE,
1412 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1413 sprite_name(pipe, sprite), pipe_name(pipe));
1415 } else if (INTEL_INFO(dev)->gen >= 7) {
1417 val = I915_READ(reg);
1418 I915_STATE_WARN(val & SPRITE_ENABLE,
1419 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1420 plane_name(pipe), pipe_name(pipe));
1421 } else if (INTEL_INFO(dev)->gen >= 5) {
1422 reg = DVSCNTR(pipe);
1423 val = I915_READ(reg);
1424 I915_STATE_WARN(val & DVS_ENABLE,
1425 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1426 plane_name(pipe), pipe_name(pipe));
1430 static void assert_vblank_disabled(struct drm_crtc *crtc)
1432 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1433 drm_crtc_vblank_put(crtc);
1436 static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1441 I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
1443 val = I915_READ(PCH_DREF_CONTROL);
1444 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1445 DREF_SUPERSPREAD_SOURCE_MASK));
1446 I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1449 static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1456 reg = PCH_TRANSCONF(pipe);
1457 val = I915_READ(reg);
1458 enabled = !!(val & TRANS_ENABLE);
1459 I915_STATE_WARN(enabled,
1460 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1464 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1465 enum pipe pipe, u32 port_sel, u32 val)
1467 if ((val & DP_PORT_EN) == 0)
1470 if (HAS_PCH_CPT(dev_priv->dev)) {
1471 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1472 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1473 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1475 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1476 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1479 if ((val & DP_PIPE_MASK) != (pipe << 30))
1485 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1486 enum pipe pipe, u32 val)
1488 if ((val & SDVO_ENABLE) == 0)
1491 if (HAS_PCH_CPT(dev_priv->dev)) {
1492 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1494 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1495 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1498 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1504 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1505 enum pipe pipe, u32 val)
1507 if ((val & LVDS_PORT_EN) == 0)
1510 if (HAS_PCH_CPT(dev_priv->dev)) {
1511 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1514 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1520 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1521 enum pipe pipe, u32 val)
1523 if ((val & ADPA_DAC_ENABLE) == 0)
1525 if (HAS_PCH_CPT(dev_priv->dev)) {
1526 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1529 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1535 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1536 enum pipe pipe, int reg, u32 port_sel)
1538 u32 val = I915_READ(reg);
1539 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1540 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1541 reg, pipe_name(pipe));
1543 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
1544 && (val & DP_PIPEB_SELECT),
1545 "IBX PCH dp port still using transcoder B\n");
1548 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1549 enum pipe pipe, int reg)
1551 u32 val = I915_READ(reg);
1552 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1553 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1554 reg, pipe_name(pipe));
1556 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
1557 && (val & SDVO_PIPE_B_SELECT),
1558 "IBX PCH hdmi port still using transcoder B\n");
1561 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1567 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1568 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1569 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1572 val = I915_READ(reg);
1573 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1574 "PCH VGA enabled on transcoder %c, should be disabled\n",
1578 val = I915_READ(reg);
1579 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1580 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1583 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1584 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1585 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
1588 static void intel_init_dpio(struct drm_device *dev)
1590 struct drm_i915_private *dev_priv = dev->dev_private;
1592 if (!IS_VALLEYVIEW(dev))
1596 * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
1597 * CHV x1 PHY (DP/HDMI D)
1598 * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
1600 if (IS_CHERRYVIEW(dev)) {
1601 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
1602 DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
1604 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
1608 static void vlv_enable_pll(struct intel_crtc *crtc,
1609 const struct intel_crtc_state *pipe_config)
1611 struct drm_device *dev = crtc->base.dev;
1612 struct drm_i915_private *dev_priv = dev->dev_private;
1613 int reg = DPLL(crtc->pipe);
1614 u32 dpll = pipe_config->dpll_hw_state.dpll;
1616 assert_pipe_disabled(dev_priv, crtc->pipe);
1618 /* No really, not for ILK+ */
1619 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
1621 /* PLL is protected by panel, make sure we can write it */
1622 if (IS_MOBILE(dev_priv->dev))
1623 assert_panel_unlocked(dev_priv, crtc->pipe);
1625 I915_WRITE(reg, dpll);
1629 if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1630 DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
1632 I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
1633 POSTING_READ(DPLL_MD(crtc->pipe));
1635 /* We do this three times for luck */
1636 I915_WRITE(reg, dpll);
1638 udelay(150); /* wait for warmup */
1639 I915_WRITE(reg, dpll);
1641 udelay(150); /* wait for warmup */
1642 I915_WRITE(reg, dpll);
1644 udelay(150); /* wait for warmup */
1647 static void chv_enable_pll(struct intel_crtc *crtc,
1648 const struct intel_crtc_state *pipe_config)
1650 struct drm_device *dev = crtc->base.dev;
1651 struct drm_i915_private *dev_priv = dev->dev_private;
1652 int pipe = crtc->pipe;
1653 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1656 assert_pipe_disabled(dev_priv, crtc->pipe);
1658 BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
1660 mutex_lock(&dev_priv->sb_lock);
1662 /* Enable back the 10bit clock to display controller */
1663 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1664 tmp |= DPIO_DCLKP_EN;
1665 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1667 mutex_unlock(&dev_priv->sb_lock);
1670 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1675 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1677 /* Check PLL is locked */
1678 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1679 DRM_ERROR("PLL %d failed to lock\n", pipe);
1681 /* not sure when this should be written */
1682 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1683 POSTING_READ(DPLL_MD(pipe));
1686 static int intel_num_dvo_pipes(struct drm_device *dev)
1688 struct intel_crtc *crtc;
1691 for_each_intel_crtc(dev, crtc)
1692 count += crtc->base.state->active &&
1693 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1698 static void i9xx_enable_pll(struct intel_crtc *crtc)
1700 struct drm_device *dev = crtc->base.dev;
1701 struct drm_i915_private *dev_priv = dev->dev_private;
1702 int reg = DPLL(crtc->pipe);
1703 u32 dpll = crtc->config->dpll_hw_state.dpll;
1705 assert_pipe_disabled(dev_priv, crtc->pipe);
1707 /* No really, not for ILK+ */
1708 BUG_ON(INTEL_INFO(dev)->gen >= 5);
1710 /* PLL is protected by panel, make sure we can write it */
1711 if (IS_MOBILE(dev) && !IS_I830(dev))
1712 assert_panel_unlocked(dev_priv, crtc->pipe);
1714 /* Enable DVO 2x clock on both PLLs if necessary */
1715 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1717 * It appears to be important that we don't enable this
1718 * for the current pipe before otherwise configuring the
1719 * PLL. No idea how this should be handled if multiple
1720 * DVO outputs are enabled simultaneosly.
1722 dpll |= DPLL_DVO_2X_MODE;
1723 I915_WRITE(DPLL(!crtc->pipe),
1724 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1727 /* Wait for the clocks to stabilize. */
1731 if (INTEL_INFO(dev)->gen >= 4) {
1732 I915_WRITE(DPLL_MD(crtc->pipe),
1733 crtc->config->dpll_hw_state.dpll_md);
1735 /* The pixel multiplier can only be updated once the
1736 * DPLL is enabled and the clocks are stable.
1738 * So write it again.
1740 I915_WRITE(reg, dpll);
1743 /* We do this three times for luck */
1744 I915_WRITE(reg, dpll);
1746 udelay(150); /* wait for warmup */
1747 I915_WRITE(reg, dpll);
1749 udelay(150); /* wait for warmup */
1750 I915_WRITE(reg, dpll);
1752 udelay(150); /* wait for warmup */
1756 * i9xx_disable_pll - disable a PLL
1757 * @dev_priv: i915 private structure
1758 * @pipe: pipe PLL to disable
1760 * Disable the PLL for @pipe, making sure the pipe is off first.
1762 * Note! This is for pre-ILK only.
1764 static void i9xx_disable_pll(struct intel_crtc *crtc)
1766 struct drm_device *dev = crtc->base.dev;
1767 struct drm_i915_private *dev_priv = dev->dev_private;
1768 enum pipe pipe = crtc->pipe;
1770 /* Disable DVO 2x clock on both PLLs if necessary */
1772 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1773 !intel_num_dvo_pipes(dev)) {
1774 I915_WRITE(DPLL(PIPE_B),
1775 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1776 I915_WRITE(DPLL(PIPE_A),
1777 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1780 /* Don't disable pipe or pipe PLLs if needed */
1781 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1782 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1785 /* Make sure the pipe isn't still relying on us */
1786 assert_pipe_disabled(dev_priv, pipe);
1788 I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
1789 POSTING_READ(DPLL(pipe));
1792 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1796 /* Make sure the pipe isn't still relying on us */
1797 assert_pipe_disabled(dev_priv, pipe);
1800 * Leave integrated clock source and reference clock enabled for pipe B.
1801 * The latter is needed for VGA hotplug / manual detection.
1803 val = DPLL_VGA_MODE_DIS;
1805 val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REF_CLK_ENABLE_VLV;
1806 I915_WRITE(DPLL(pipe), val);
1807 POSTING_READ(DPLL(pipe));
1811 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1813 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1816 /* Make sure the pipe isn't still relying on us */
1817 assert_pipe_disabled(dev_priv, pipe);
1819 /* Set PLL en = 0 */
1820 val = DPLL_SSC_REF_CLK_CHV |
1821 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1823 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1824 I915_WRITE(DPLL(pipe), val);
1825 POSTING_READ(DPLL(pipe));
1827 mutex_lock(&dev_priv->sb_lock);
1829 /* Disable 10bit clock to display controller */
1830 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1831 val &= ~DPIO_DCLKP_EN;
1832 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1834 /* disable left/right clock distribution */
1835 if (pipe != PIPE_B) {
1836 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1837 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1838 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1840 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1841 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1842 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1845 mutex_unlock(&dev_priv->sb_lock);
1848 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1849 struct intel_digital_port *dport,
1850 unsigned int expected_mask)
1855 switch (dport->port) {
1857 port_mask = DPLL_PORTB_READY_MASK;
1861 port_mask = DPLL_PORTC_READY_MASK;
1863 expected_mask <<= 4;
1866 port_mask = DPLL_PORTD_READY_MASK;
1867 dpll_reg = DPIO_PHY_STATUS;
1873 if (wait_for((I915_READ(dpll_reg) & port_mask) == expected_mask, 1000))
1874 WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
1875 port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
1878 static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
1880 struct drm_device *dev = crtc->base.dev;
1881 struct drm_i915_private *dev_priv = dev->dev_private;
1882 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1884 if (WARN_ON(pll == NULL))
1887 WARN_ON(!pll->config.crtc_mask);
1888 if (pll->active == 0) {
1889 DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
1891 assert_shared_dpll_disabled(dev_priv, pll);
1893 pll->mode_set(dev_priv, pll);
1898 * intel_enable_shared_dpll - enable PCH PLL
1899 * @dev_priv: i915 private structure
1900 * @pipe: pipe PLL to enable
1902 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1903 * drives the transcoder clock.
1905 static void intel_enable_shared_dpll(struct intel_crtc *crtc)
1907 struct drm_device *dev = crtc->base.dev;
1908 struct drm_i915_private *dev_priv = dev->dev_private;
1909 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1911 if (WARN_ON(pll == NULL))
1914 if (WARN_ON(pll->config.crtc_mask == 0))
1917 DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
1918 pll->name, pll->active, pll->on,
1919 crtc->base.base.id);
1921 if (pll->active++) {
1923 assert_shared_dpll_enabled(dev_priv, pll);
1928 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
1930 DRM_DEBUG_KMS("enabling %s\n", pll->name);
1931 pll->enable(dev_priv, pll);
1935 static void intel_disable_shared_dpll(struct intel_crtc *crtc)
1937 struct drm_device *dev = crtc->base.dev;
1938 struct drm_i915_private *dev_priv = dev->dev_private;
1939 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1941 /* PCH only available on ILK+ */
1942 if (INTEL_INFO(dev)->gen < 5)
1948 if (WARN_ON(!(pll->config.crtc_mask & (1 << drm_crtc_index(&crtc->base)))))
1951 DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
1952 pll->name, pll->active, pll->on,
1953 crtc->base.base.id);
1955 if (WARN_ON(pll->active == 0)) {
1956 assert_shared_dpll_disabled(dev_priv, pll);
1960 assert_shared_dpll_enabled(dev_priv, pll);
1965 DRM_DEBUG_KMS("disabling %s\n", pll->name);
1966 pll->disable(dev_priv, pll);
1969 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
1972 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1975 struct drm_device *dev = dev_priv->dev;
1976 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1977 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1978 uint32_t reg, val, pipeconf_val;
1980 /* PCH only available on ILK+ */
1981 BUG_ON(!HAS_PCH_SPLIT(dev));
1983 /* Make sure PCH DPLL is enabled */
1984 assert_shared_dpll_enabled(dev_priv,
1985 intel_crtc_to_shared_dpll(intel_crtc));
1987 /* FDI must be feeding us bits for PCH ports */
1988 assert_fdi_tx_enabled(dev_priv, pipe);
1989 assert_fdi_rx_enabled(dev_priv, pipe);
1991 if (HAS_PCH_CPT(dev)) {
1992 /* Workaround: Set the timing override bit before enabling the
1993 * pch transcoder. */
1994 reg = TRANS_CHICKEN2(pipe);
1995 val = I915_READ(reg);
1996 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1997 I915_WRITE(reg, val);
2000 reg = PCH_TRANSCONF(pipe);
2001 val = I915_READ(reg);
2002 pipeconf_val = I915_READ(PIPECONF(pipe));
2004 if (HAS_PCH_IBX(dev_priv->dev)) {
2006 * Make the BPC in transcoder be consistent with
2007 * that in pipeconf reg. For HDMI we must use 8bpc
2008 * here for both 8bpc and 12bpc.
2010 val &= ~PIPECONF_BPC_MASK;
2011 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
2012 val |= PIPECONF_8BPC;
2014 val |= pipeconf_val & PIPECONF_BPC_MASK;
2017 val &= ~TRANS_INTERLACE_MASK;
2018 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
2019 if (HAS_PCH_IBX(dev_priv->dev) &&
2020 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
2021 val |= TRANS_LEGACY_INTERLACED_ILK;
2023 val |= TRANS_INTERLACED;
2025 val |= TRANS_PROGRESSIVE;
2027 I915_WRITE(reg, val | TRANS_ENABLE);
2028 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
2029 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
2032 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
2033 enum transcoder cpu_transcoder)
2035 u32 val, pipeconf_val;
2037 /* PCH only available on ILK+ */
2038 BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
2040 /* FDI must be feeding us bits for PCH ports */
2041 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
2042 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
2044 /* Workaround: set timing override bit. */
2045 val = I915_READ(_TRANSA_CHICKEN2);
2046 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
2047 I915_WRITE(_TRANSA_CHICKEN2, val);
2050 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
2052 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
2053 PIPECONF_INTERLACED_ILK)
2054 val |= TRANS_INTERLACED;
2056 val |= TRANS_PROGRESSIVE;
2058 I915_WRITE(LPT_TRANSCONF, val);
2059 if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
2060 DRM_ERROR("Failed to enable PCH transcoder\n");
2063 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
2066 struct drm_device *dev = dev_priv->dev;
2069 /* FDI relies on the transcoder */
2070 assert_fdi_tx_disabled(dev_priv, pipe);
2071 assert_fdi_rx_disabled(dev_priv, pipe);
2073 /* Ports must be off as well */
2074 assert_pch_ports_disabled(dev_priv, pipe);
2076 reg = PCH_TRANSCONF(pipe);
2077 val = I915_READ(reg);
2078 val &= ~TRANS_ENABLE;
2079 I915_WRITE(reg, val);
2080 /* wait for PCH transcoder off, transcoder state */
2081 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
2082 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
2084 if (!HAS_PCH_IBX(dev)) {
2085 /* Workaround: Clear the timing override chicken bit again. */
2086 reg = TRANS_CHICKEN2(pipe);
2087 val = I915_READ(reg);
2088 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2089 I915_WRITE(reg, val);
2093 static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
2097 val = I915_READ(LPT_TRANSCONF);
2098 val &= ~TRANS_ENABLE;
2099 I915_WRITE(LPT_TRANSCONF, val);
2100 /* wait for PCH transcoder off, transcoder state */
2101 if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
2102 DRM_ERROR("Failed to disable PCH transcoder\n");
2104 /* Workaround: clear timing override bit. */
2105 val = I915_READ(_TRANSA_CHICKEN2);
2106 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2107 I915_WRITE(_TRANSA_CHICKEN2, val);
2111 * intel_enable_pipe - enable a pipe, asserting requirements
2112 * @crtc: crtc responsible for the pipe
2114 * Enable @crtc's pipe, making sure that various hardware specific requirements
2115 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
2117 static void intel_enable_pipe(struct intel_crtc *crtc)
2119 struct drm_device *dev = crtc->base.dev;
2120 struct drm_i915_private *dev_priv = dev->dev_private;
2121 enum pipe pipe = crtc->pipe;
2122 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
2124 enum pipe pch_transcoder;
2128 DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
2130 assert_planes_disabled(dev_priv, pipe);
2131 assert_cursor_disabled(dev_priv, pipe);
2132 assert_sprites_disabled(dev_priv, pipe);
2134 if (HAS_PCH_LPT(dev_priv->dev))
2135 pch_transcoder = TRANSCODER_A;
2137 pch_transcoder = pipe;
2140 * A pipe without a PLL won't actually be able to drive bits from
2141 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2144 if (HAS_GMCH_DISPLAY(dev_priv->dev))
2145 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
2146 assert_dsi_pll_enabled(dev_priv);
2148 assert_pll_enabled(dev_priv, pipe);
2150 if (crtc->config->has_pch_encoder) {
2151 /* if driving the PCH, we need FDI enabled */
2152 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
2153 assert_fdi_tx_pll_enabled(dev_priv,
2154 (enum pipe) cpu_transcoder);
2156 /* FIXME: assert CPU port conditions for SNB+ */
2159 reg = PIPECONF(cpu_transcoder);
2160 val = I915_READ(reg);
2161 if (val & PIPECONF_ENABLE) {
2162 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2163 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
2167 I915_WRITE(reg, val | PIPECONF_ENABLE);
2172 * intel_disable_pipe - disable a pipe, asserting requirements
2173 * @crtc: crtc whose pipes is to be disabled
2175 * Disable the pipe of @crtc, making sure that various hardware
2176 * specific requirements are met, if applicable, e.g. plane
2177 * disabled, panel fitter off, etc.
2179 * Will wait until the pipe has shut down before returning.
2181 static void intel_disable_pipe(struct intel_crtc *crtc)
2183 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
2184 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
2185 enum pipe pipe = crtc->pipe;
2189 DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
2192 * Make sure planes won't keep trying to pump pixels to us,
2193 * or we might hang the display.
2195 assert_planes_disabled(dev_priv, pipe);
2196 assert_cursor_disabled(dev_priv, pipe);
2197 assert_sprites_disabled(dev_priv, pipe);
2199 reg = PIPECONF(cpu_transcoder);
2200 val = I915_READ(reg);
2201 if ((val & PIPECONF_ENABLE) == 0)
2205 * Double wide has implications for planes
2206 * so best keep it disabled when not needed.
2208 if (crtc->config->double_wide)
2209 val &= ~PIPECONF_DOUBLE_WIDE;
2211 /* Don't disable pipe or pipe PLLs if needed */
2212 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2213 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
2214 val &= ~PIPECONF_ENABLE;
2216 I915_WRITE(reg, val);
2217 if ((val & PIPECONF_ENABLE) == 0)
2218 intel_wait_for_pipe_off(crtc);
2221 static bool need_vtd_wa(struct drm_device *dev)
2223 #ifdef CONFIG_INTEL_IOMMU
2224 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2231 intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
2232 uint64_t fb_format_modifier)
2234 unsigned int tile_height;
2235 uint32_t pixel_bytes;
2237 switch (fb_format_modifier) {
2238 case DRM_FORMAT_MOD_NONE:
2241 case I915_FORMAT_MOD_X_TILED:
2242 tile_height = IS_GEN2(dev) ? 16 : 8;
2244 case I915_FORMAT_MOD_Y_TILED:
2247 case I915_FORMAT_MOD_Yf_TILED:
2248 pixel_bytes = drm_format_plane_cpp(pixel_format, 0);
2249 switch (pixel_bytes) {
2263 "128-bit pixels are not supported for display!");
2269 MISSING_CASE(fb_format_modifier);
2278 intel_fb_align_height(struct drm_device *dev, unsigned int height,
2279 uint32_t pixel_format, uint64_t fb_format_modifier)
2281 return ALIGN(height, intel_tile_height(dev, pixel_format,
2282 fb_format_modifier));
2286 intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
2287 const struct drm_plane_state *plane_state)
2289 struct intel_rotation_info *info = &view->rotation_info;
2290 unsigned int tile_height, tile_pitch;
2292 *view = i915_ggtt_view_normal;
2297 if (!intel_rotation_90_or_270(plane_state->rotation))
2300 *view = i915_ggtt_view_rotated;
2302 info->height = fb->height;
2303 info->pixel_format = fb->pixel_format;
2304 info->pitch = fb->pitches[0];
2305 info->fb_modifier = fb->modifier[0];
2307 tile_height = intel_tile_height(fb->dev, fb->pixel_format,
2309 tile_pitch = PAGE_SIZE / tile_height;
2310 info->width_pages = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
2311 info->height_pages = DIV_ROUND_UP(fb->height, tile_height);
2312 info->size = info->width_pages * info->height_pages * PAGE_SIZE;
2317 static unsigned int intel_linear_alignment(struct drm_i915_private *dev_priv)
2319 if (INTEL_INFO(dev_priv)->gen >= 9)
2321 else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
2322 IS_VALLEYVIEW(dev_priv))
2324 else if (INTEL_INFO(dev_priv)->gen >= 4)
2331 intel_pin_and_fence_fb_obj(struct drm_plane *plane,
2332 struct drm_framebuffer *fb,
2333 const struct drm_plane_state *plane_state,
2334 struct intel_engine_cs *pipelined,
2335 struct drm_i915_gem_request **pipelined_request)
2337 struct drm_device *dev = fb->dev;
2338 struct drm_i915_private *dev_priv = dev->dev_private;
2339 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2340 struct i915_ggtt_view view;
2344 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2346 switch (fb->modifier[0]) {
2347 case DRM_FORMAT_MOD_NONE:
2348 alignment = intel_linear_alignment(dev_priv);
2350 case I915_FORMAT_MOD_X_TILED:
2351 if (INTEL_INFO(dev)->gen >= 9)
2352 alignment = 256 * 1024;
2354 /* pin() will align the object as required by fence */
2358 case I915_FORMAT_MOD_Y_TILED:
2359 case I915_FORMAT_MOD_Yf_TILED:
2360 if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
2361 "Y tiling bo slipped through, driver bug!\n"))
2363 alignment = 1 * 1024 * 1024;
2366 MISSING_CASE(fb->modifier[0]);
2370 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2374 /* Note that the w/a also requires 64 PTE of padding following the
2375 * bo. We currently fill all unused PTE with the shadow page and so
2376 * we should always have valid PTE following the scanout preventing
2379 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2380 alignment = 256 * 1024;
2383 * Global gtt pte registers are special registers which actually forward
2384 * writes to a chunk of system memory. Which means that there is no risk
2385 * that the register values disappear as soon as we call
2386 * intel_runtime_pm_put(), so it is correct to wrap only the
2387 * pin/unpin/fence and not more.
2389 intel_runtime_pm_get(dev_priv);
2391 dev_priv->mm.interruptible = false;
2392 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
2393 pipelined_request, &view);
2395 goto err_interruptible;
2397 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2398 * fence, whereas 965+ only requires a fence if using
2399 * framebuffer compression. For simplicity, we always install
2400 * a fence as the cost is not that onerous.
2402 ret = i915_gem_object_get_fence(obj);
2403 if (ret == -EDEADLK) {
2405 * -EDEADLK means there are no free fences
2408 * This is propagated to atomic, but it uses
2409 * -EDEADLK to force a locking recovery, so
2410 * change the returned error to -EBUSY.
2417 i915_gem_object_pin_fence(obj);
2419 dev_priv->mm.interruptible = true;
2420 intel_runtime_pm_put(dev_priv);
2424 i915_gem_object_unpin_from_display_plane(obj, &view);
2426 dev_priv->mm.interruptible = true;
2427 intel_runtime_pm_put(dev_priv);
2431 static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
2432 const struct drm_plane_state *plane_state)
2434 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2435 struct i915_ggtt_view view;
2438 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2440 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2441 WARN_ONCE(ret, "Couldn't get view from plane state!");
2443 i915_gem_object_unpin_fence(obj);
2444 i915_gem_object_unpin_from_display_plane(obj, &view);
2447 /* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
2448 * is assumed to be a power-of-two. */
2449 unsigned long intel_gen4_compute_page_offset(struct drm_i915_private *dev_priv,
2451 unsigned int tiling_mode,
2455 if (tiling_mode != I915_TILING_NONE) {
2456 unsigned int tile_rows, tiles;
2461 tiles = *x / (512/cpp);
2464 return tile_rows * pitch * 8 + tiles * 4096;
2466 unsigned int alignment = intel_linear_alignment(dev_priv) - 1;
2467 unsigned int offset;
2469 offset = *y * pitch + *x * cpp;
2470 *y = (offset & alignment) / pitch;
2471 *x = ((offset & alignment) - *y * pitch) / cpp;
2472 return offset & ~alignment;
2476 static int i9xx_format_to_fourcc(int format)
2479 case DISPPLANE_8BPP:
2480 return DRM_FORMAT_C8;
2481 case DISPPLANE_BGRX555:
2482 return DRM_FORMAT_XRGB1555;
2483 case DISPPLANE_BGRX565:
2484 return DRM_FORMAT_RGB565;
2486 case DISPPLANE_BGRX888:
2487 return DRM_FORMAT_XRGB8888;
2488 case DISPPLANE_RGBX888:
2489 return DRM_FORMAT_XBGR8888;
2490 case DISPPLANE_BGRX101010:
2491 return DRM_FORMAT_XRGB2101010;
2492 case DISPPLANE_RGBX101010:
2493 return DRM_FORMAT_XBGR2101010;
2497 static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2500 case PLANE_CTL_FORMAT_RGB_565:
2501 return DRM_FORMAT_RGB565;
2503 case PLANE_CTL_FORMAT_XRGB_8888:
2506 return DRM_FORMAT_ABGR8888;
2508 return DRM_FORMAT_XBGR8888;
2511 return DRM_FORMAT_ARGB8888;
2513 return DRM_FORMAT_XRGB8888;
2515 case PLANE_CTL_FORMAT_XRGB_2101010:
2517 return DRM_FORMAT_XBGR2101010;
2519 return DRM_FORMAT_XRGB2101010;
2524 intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2525 struct intel_initial_plane_config *plane_config)
2527 struct drm_device *dev = crtc->base.dev;
2528 struct drm_i915_gem_object *obj = NULL;
2529 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2530 struct drm_framebuffer *fb = &plane_config->fb->base;
2531 u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2532 u32 size_aligned = round_up(plane_config->base + plane_config->size,
2535 size_aligned -= base_aligned;
2537 if (plane_config->size == 0)
2540 obj = i915_gem_object_create_stolen_for_preallocated(dev,
2547 obj->tiling_mode = plane_config->tiling;
2548 if (obj->tiling_mode == I915_TILING_X)
2549 obj->stride = fb->pitches[0];
2551 mode_cmd.pixel_format = fb->pixel_format;
2552 mode_cmd.width = fb->width;
2553 mode_cmd.height = fb->height;
2554 mode_cmd.pitches[0] = fb->pitches[0];
2555 mode_cmd.modifier[0] = fb->modifier[0];
2556 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2558 mutex_lock(&dev->struct_mutex);
2559 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
2561 DRM_DEBUG_KMS("intel fb init failed\n");
2564 mutex_unlock(&dev->struct_mutex);
2566 DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
2570 drm_gem_object_unreference(&obj->base);
2571 mutex_unlock(&dev->struct_mutex);
2575 /* Update plane->state->fb to match plane->fb after driver-internal updates */
2577 update_state_fb(struct drm_plane *plane)
2579 if (plane->fb == plane->state->fb)
2582 if (plane->state->fb)
2583 drm_framebuffer_unreference(plane->state->fb);
2584 plane->state->fb = plane->fb;
2585 if (plane->state->fb)
2586 drm_framebuffer_reference(plane->state->fb);
2590 intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2591 struct intel_initial_plane_config *plane_config)
2593 struct drm_device *dev = intel_crtc->base.dev;
2594 struct drm_i915_private *dev_priv = dev->dev_private;
2596 struct intel_crtc *i;
2597 struct drm_i915_gem_object *obj;
2598 struct drm_plane *primary = intel_crtc->base.primary;
2599 struct drm_plane_state *plane_state = primary->state;
2600 struct drm_framebuffer *fb;
2602 if (!plane_config->fb)
2605 if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
2606 fb = &plane_config->fb->base;
2610 kfree(plane_config->fb);
2613 * Failed to alloc the obj, check to see if we should share
2614 * an fb with another CRTC instead
2616 for_each_crtc(dev, c) {
2617 i = to_intel_crtc(c);
2619 if (c == &intel_crtc->base)
2625 fb = c->primary->fb;
2629 obj = intel_fb_obj(fb);
2630 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
2631 drm_framebuffer_reference(fb);
2639 plane_state->src_x = plane_state->src_y = 0;
2640 plane_state->src_w = fb->width << 16;
2641 plane_state->src_h = fb->height << 16;
2643 plane_state->crtc_x = plane_state->src_y = 0;
2644 plane_state->crtc_w = fb->width;
2645 plane_state->crtc_h = fb->height;
2647 obj = intel_fb_obj(fb);
2648 if (obj->tiling_mode != I915_TILING_NONE)
2649 dev_priv->preserve_bios_swizzle = true;
2651 drm_framebuffer_reference(fb);
2652 primary->fb = primary->state->fb = fb;
2653 primary->crtc = primary->state->crtc = &intel_crtc->base;
2654 intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
2655 obj->frontbuffer_bits |= to_intel_plane(primary)->frontbuffer_bit;
2658 static void i9xx_update_primary_plane(struct drm_crtc *crtc,
2659 struct drm_framebuffer *fb,
2662 struct drm_device *dev = crtc->dev;
2663 struct drm_i915_private *dev_priv = dev->dev_private;
2664 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2665 struct drm_plane *primary = crtc->primary;
2666 bool visible = to_intel_plane_state(primary->state)->visible;
2667 struct drm_i915_gem_object *obj;
2668 int plane = intel_crtc->plane;
2669 unsigned long linear_offset;
2671 u32 reg = DSPCNTR(plane);
2674 if (!visible || !fb) {
2676 if (INTEL_INFO(dev)->gen >= 4)
2677 I915_WRITE(DSPSURF(plane), 0);
2679 I915_WRITE(DSPADDR(plane), 0);
2684 obj = intel_fb_obj(fb);
2685 if (WARN_ON(obj == NULL))
2688 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2690 dspcntr = DISPPLANE_GAMMA_ENABLE;
2692 dspcntr |= DISPLAY_PLANE_ENABLE;
2694 if (INTEL_INFO(dev)->gen < 4) {
2695 if (intel_crtc->pipe == PIPE_B)
2696 dspcntr |= DISPPLANE_SEL_PIPE_B;
2698 /* pipesrc and dspsize control the size that is scaled from,
2699 * which should always be the user's requested size.
2701 I915_WRITE(DSPSIZE(plane),
2702 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2703 (intel_crtc->config->pipe_src_w - 1));
2704 I915_WRITE(DSPPOS(plane), 0);
2705 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2706 I915_WRITE(PRIMSIZE(plane),
2707 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2708 (intel_crtc->config->pipe_src_w - 1));
2709 I915_WRITE(PRIMPOS(plane), 0);
2710 I915_WRITE(PRIMCNSTALPHA(plane), 0);
2713 switch (fb->pixel_format) {
2715 dspcntr |= DISPPLANE_8BPP;
2717 case DRM_FORMAT_XRGB1555:
2718 dspcntr |= DISPPLANE_BGRX555;
2720 case DRM_FORMAT_RGB565:
2721 dspcntr |= DISPPLANE_BGRX565;
2723 case DRM_FORMAT_XRGB8888:
2724 dspcntr |= DISPPLANE_BGRX888;
2726 case DRM_FORMAT_XBGR8888:
2727 dspcntr |= DISPPLANE_RGBX888;
2729 case DRM_FORMAT_XRGB2101010:
2730 dspcntr |= DISPPLANE_BGRX101010;
2732 case DRM_FORMAT_XBGR2101010:
2733 dspcntr |= DISPPLANE_RGBX101010;
2739 if (INTEL_INFO(dev)->gen >= 4 &&
2740 obj->tiling_mode != I915_TILING_NONE)
2741 dspcntr |= DISPPLANE_TILED;
2744 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2746 linear_offset = y * fb->pitches[0] + x * pixel_size;
2748 if (INTEL_INFO(dev)->gen >= 4) {
2749 intel_crtc->dspaddr_offset =
2750 intel_gen4_compute_page_offset(dev_priv,
2751 &x, &y, obj->tiling_mode,
2754 linear_offset -= intel_crtc->dspaddr_offset;
2756 intel_crtc->dspaddr_offset = linear_offset;
2759 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2760 dspcntr |= DISPPLANE_ROTATE_180;
2762 x += (intel_crtc->config->pipe_src_w - 1);
2763 y += (intel_crtc->config->pipe_src_h - 1);
2765 /* Finding the last pixel of the last line of the display
2766 data and adding to linear_offset*/
2768 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2769 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2772 I915_WRITE(reg, dspcntr);
2774 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2775 if (INTEL_INFO(dev)->gen >= 4) {
2776 I915_WRITE(DSPSURF(plane),
2777 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2778 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2779 I915_WRITE(DSPLINOFF(plane), linear_offset);
2781 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
2785 static void ironlake_update_primary_plane(struct drm_crtc *crtc,
2786 struct drm_framebuffer *fb,
2789 struct drm_device *dev = crtc->dev;
2790 struct drm_i915_private *dev_priv = dev->dev_private;
2791 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2792 struct drm_plane *primary = crtc->primary;
2793 bool visible = to_intel_plane_state(primary->state)->visible;
2794 struct drm_i915_gem_object *obj;
2795 int plane = intel_crtc->plane;
2796 unsigned long linear_offset;
2798 u32 reg = DSPCNTR(plane);
2801 if (!visible || !fb) {
2803 I915_WRITE(DSPSURF(plane), 0);
2808 obj = intel_fb_obj(fb);
2809 if (WARN_ON(obj == NULL))
2812 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2814 dspcntr = DISPPLANE_GAMMA_ENABLE;
2816 dspcntr |= DISPLAY_PLANE_ENABLE;
2818 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2819 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
2821 switch (fb->pixel_format) {
2823 dspcntr |= DISPPLANE_8BPP;
2825 case DRM_FORMAT_RGB565:
2826 dspcntr |= DISPPLANE_BGRX565;
2828 case DRM_FORMAT_XRGB8888:
2829 dspcntr |= DISPPLANE_BGRX888;
2831 case DRM_FORMAT_XBGR8888:
2832 dspcntr |= DISPPLANE_RGBX888;
2834 case DRM_FORMAT_XRGB2101010:
2835 dspcntr |= DISPPLANE_BGRX101010;
2837 case DRM_FORMAT_XBGR2101010:
2838 dspcntr |= DISPPLANE_RGBX101010;
2844 if (obj->tiling_mode != I915_TILING_NONE)
2845 dspcntr |= DISPPLANE_TILED;
2847 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
2848 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2850 linear_offset = y * fb->pitches[0] + x * pixel_size;
2851 intel_crtc->dspaddr_offset =
2852 intel_gen4_compute_page_offset(dev_priv,
2853 &x, &y, obj->tiling_mode,
2856 linear_offset -= intel_crtc->dspaddr_offset;
2857 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2858 dspcntr |= DISPPLANE_ROTATE_180;
2860 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
2861 x += (intel_crtc->config->pipe_src_w - 1);
2862 y += (intel_crtc->config->pipe_src_h - 1);
2864 /* Finding the last pixel of the last line of the display
2865 data and adding to linear_offset*/
2867 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2868 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2872 I915_WRITE(reg, dspcntr);
2874 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2875 I915_WRITE(DSPSURF(plane),
2876 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2877 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2878 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2880 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2881 I915_WRITE(DSPLINOFF(plane), linear_offset);
2886 u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
2887 uint32_t pixel_format)
2889 u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2892 * The stride is either expressed as a multiple of 64 bytes
2893 * chunks for linear buffers or in number of tiles for tiled
2896 switch (fb_modifier) {
2897 case DRM_FORMAT_MOD_NONE:
2899 case I915_FORMAT_MOD_X_TILED:
2900 if (INTEL_INFO(dev)->gen == 2)
2903 case I915_FORMAT_MOD_Y_TILED:
2904 /* No need to check for old gens and Y tiling since this is
2905 * about the display engine and those will be blocked before
2909 case I915_FORMAT_MOD_Yf_TILED:
2910 if (bits_per_pixel == 8)
2915 MISSING_CASE(fb_modifier);
2920 unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
2921 struct drm_i915_gem_object *obj)
2923 const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
2925 if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
2926 view = &i915_ggtt_view_rotated;
2928 return i915_gem_obj_ggtt_offset_view(obj, view);
2931 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
2933 struct drm_device *dev = intel_crtc->base.dev;
2934 struct drm_i915_private *dev_priv = dev->dev_private;
2936 I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
2937 I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
2938 I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
2939 DRM_DEBUG_KMS("CRTC:%d Disabled scaler id %u.%u\n",
2940 intel_crtc->base.base.id, intel_crtc->pipe, id);
2944 * This function detaches (aka. unbinds) unused scalers in hardware
2946 static void skl_detach_scalers(struct intel_crtc *intel_crtc)
2948 struct intel_crtc_scaler_state *scaler_state;
2951 scaler_state = &intel_crtc->config->scaler_state;
2953 /* loop through and disable scalers that aren't in use */
2954 for (i = 0; i < intel_crtc->num_scalers; i++) {
2955 if (!scaler_state->scalers[i].in_use)
2956 skl_detach_scaler(intel_crtc, i);
2960 u32 skl_plane_ctl_format(uint32_t pixel_format)
2962 switch (pixel_format) {
2964 return PLANE_CTL_FORMAT_INDEXED;
2965 case DRM_FORMAT_RGB565:
2966 return PLANE_CTL_FORMAT_RGB_565;
2967 case DRM_FORMAT_XBGR8888:
2968 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
2969 case DRM_FORMAT_XRGB8888:
2970 return PLANE_CTL_FORMAT_XRGB_8888;
2972 * XXX: For ARBG/ABGR formats we default to expecting scanout buffers
2973 * to be already pre-multiplied. We need to add a knob (or a different
2974 * DRM_FORMAT) for user-space to configure that.
2976 case DRM_FORMAT_ABGR8888:
2977 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
2978 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2979 case DRM_FORMAT_ARGB8888:
2980 return PLANE_CTL_FORMAT_XRGB_8888 |
2981 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2982 case DRM_FORMAT_XRGB2101010:
2983 return PLANE_CTL_FORMAT_XRGB_2101010;
2984 case DRM_FORMAT_XBGR2101010:
2985 return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
2986 case DRM_FORMAT_YUYV:
2987 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
2988 case DRM_FORMAT_YVYU:
2989 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
2990 case DRM_FORMAT_UYVY:
2991 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
2992 case DRM_FORMAT_VYUY:
2993 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
2995 MISSING_CASE(pixel_format);
3001 u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
3003 switch (fb_modifier) {
3004 case DRM_FORMAT_MOD_NONE:
3006 case I915_FORMAT_MOD_X_TILED:
3007 return PLANE_CTL_TILED_X;
3008 case I915_FORMAT_MOD_Y_TILED:
3009 return PLANE_CTL_TILED_Y;
3010 case I915_FORMAT_MOD_Yf_TILED:
3011 return PLANE_CTL_TILED_YF;
3013 MISSING_CASE(fb_modifier);
3019 u32 skl_plane_ctl_rotation(unsigned int rotation)
3022 case BIT(DRM_ROTATE_0):
3025 * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
3026 * while i915 HW rotation is clockwise, thats why this swapping.
3028 case BIT(DRM_ROTATE_90):
3029 return PLANE_CTL_ROTATE_270;
3030 case BIT(DRM_ROTATE_180):
3031 return PLANE_CTL_ROTATE_180;
3032 case BIT(DRM_ROTATE_270):
3033 return PLANE_CTL_ROTATE_90;
3035 MISSING_CASE(rotation);
3041 static void skylake_update_primary_plane(struct drm_crtc *crtc,
3042 struct drm_framebuffer *fb,
3045 struct drm_device *dev = crtc->dev;
3046 struct drm_i915_private *dev_priv = dev->dev_private;
3047 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3048 struct drm_plane *plane = crtc->primary;
3049 bool visible = to_intel_plane_state(plane->state)->visible;
3050 struct drm_i915_gem_object *obj;
3051 int pipe = intel_crtc->pipe;
3052 u32 plane_ctl, stride_div, stride;
3053 u32 tile_height, plane_offset, plane_size;
3054 unsigned int rotation;
3055 int x_offset, y_offset;
3056 unsigned long surf_addr;
3057 struct intel_crtc_state *crtc_state = intel_crtc->config;
3058 struct intel_plane_state *plane_state;
3059 int src_x = 0, src_y = 0, src_w = 0, src_h = 0;
3060 int dst_x = 0, dst_y = 0, dst_w = 0, dst_h = 0;
3063 plane_state = to_intel_plane_state(plane->state);
3065 if (!visible || !fb) {
3066 I915_WRITE(PLANE_CTL(pipe, 0), 0);
3067 I915_WRITE(PLANE_SURF(pipe, 0), 0);
3068 POSTING_READ(PLANE_CTL(pipe, 0));
3072 plane_ctl = PLANE_CTL_ENABLE |
3073 PLANE_CTL_PIPE_GAMMA_ENABLE |
3074 PLANE_CTL_PIPE_CSC_ENABLE;
3076 plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
3077 plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
3078 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3080 rotation = plane->state->rotation;
3081 plane_ctl |= skl_plane_ctl_rotation(rotation);
3083 obj = intel_fb_obj(fb);
3084 stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
3086 surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj);
3089 * FIXME: intel_plane_state->src, dst aren't set when transitional
3090 * update_plane helpers are called from legacy paths.
3091 * Once full atomic crtc is available, below check can be avoided.
3093 if (drm_rect_width(&plane_state->src)) {
3094 scaler_id = plane_state->scaler_id;
3095 src_x = plane_state->src.x1 >> 16;
3096 src_y = plane_state->src.y1 >> 16;
3097 src_w = drm_rect_width(&plane_state->src) >> 16;
3098 src_h = drm_rect_height(&plane_state->src) >> 16;
3099 dst_x = plane_state->dst.x1;
3100 dst_y = plane_state->dst.y1;
3101 dst_w = drm_rect_width(&plane_state->dst);
3102 dst_h = drm_rect_height(&plane_state->dst);
3104 WARN_ON(x != src_x || y != src_y);
3106 src_w = intel_crtc->config->pipe_src_w;
3107 src_h = intel_crtc->config->pipe_src_h;
3110 if (intel_rotation_90_or_270(rotation)) {
3111 /* stride = Surface height in tiles */
3112 tile_height = intel_tile_height(dev, fb->pixel_format,
3114 stride = DIV_ROUND_UP(fb->height, tile_height);
3115 x_offset = stride * tile_height - y - src_h;
3117 plane_size = (src_w - 1) << 16 | (src_h - 1);
3119 stride = fb->pitches[0] / stride_div;
3122 plane_size = (src_h - 1) << 16 | (src_w - 1);
3124 plane_offset = y_offset << 16 | x_offset;
3126 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
3127 I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
3128 I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
3129 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
3131 if (scaler_id >= 0) {
3132 uint32_t ps_ctrl = 0;
3134 WARN_ON(!dst_w || !dst_h);
3135 ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
3136 crtc_state->scaler_state.scalers[scaler_id].mode;
3137 I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
3138 I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
3139 I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
3140 I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
3141 I915_WRITE(PLANE_POS(pipe, 0), 0);
3143 I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
3146 I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
3148 POSTING_READ(PLANE_SURF(pipe, 0));
3151 /* Assume fb object is pinned & idle & fenced and just update base pointers */
3153 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
3154 int x, int y, enum mode_set_atomic state)
3156 struct drm_device *dev = crtc->dev;
3157 struct drm_i915_private *dev_priv = dev->dev_private;
3159 if (dev_priv->fbc.disable_fbc)
3160 dev_priv->fbc.disable_fbc(dev_priv);
3162 dev_priv->display.update_primary_plane(crtc, fb, x, y);
3167 static void intel_complete_page_flips(struct drm_device *dev)
3169 struct drm_crtc *crtc;
3171 for_each_crtc(dev, crtc) {
3172 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3173 enum plane plane = intel_crtc->plane;
3175 intel_prepare_page_flip(dev, plane);
3176 intel_finish_page_flip_plane(dev, plane);
3180 static void intel_update_primary_planes(struct drm_device *dev)
3182 struct drm_i915_private *dev_priv = dev->dev_private;
3183 struct drm_crtc *crtc;
3185 for_each_crtc(dev, crtc) {
3186 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3188 drm_modeset_lock(&crtc->mutex, NULL);
3190 * FIXME: Once we have proper support for primary planes (and
3191 * disabling them without disabling the entire crtc) allow again
3192 * a NULL crtc->primary->fb.
3194 if (intel_crtc->active && crtc->primary->fb)
3195 dev_priv->display.update_primary_plane(crtc,
3199 drm_modeset_unlock(&crtc->mutex);
3203 void intel_prepare_reset(struct drm_device *dev)
3205 /* no reset support for gen2 */
3209 /* reset doesn't touch the display */
3210 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
3213 drm_modeset_lock_all(dev);
3215 * Disabling the crtcs gracefully seems nicer. Also the
3216 * g33 docs say we should at least disable all the planes.
3218 intel_display_suspend(dev);
3221 void intel_finish_reset(struct drm_device *dev)
3223 struct drm_i915_private *dev_priv = to_i915(dev);
3226 * Flips in the rings will be nuked by the reset,
3227 * so complete all pending flips so that user space
3228 * will get its events and not get stuck.
3230 intel_complete_page_flips(dev);
3232 /* no reset support for gen2 */
3236 /* reset doesn't touch the display */
3237 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
3239 * Flips in the rings have been nuked by the reset,
3240 * so update the base address of all primary
3241 * planes to the the last fb to make sure we're
3242 * showing the correct fb after a reset.
3244 intel_update_primary_planes(dev);
3249 * The display has been reset as well,
3250 * so need a full re-initialization.
3252 intel_runtime_pm_disable_interrupts(dev_priv);
3253 intel_runtime_pm_enable_interrupts(dev_priv);
3255 intel_modeset_init_hw(dev);
3257 spin_lock_irq(&dev_priv->irq_lock);
3258 if (dev_priv->display.hpd_irq_setup)
3259 dev_priv->display.hpd_irq_setup(dev);
3260 spin_unlock_irq(&dev_priv->irq_lock);
3262 intel_display_resume(dev);
3264 intel_hpd_init(dev_priv);
3266 drm_modeset_unlock_all(dev);
3270 intel_finish_fb(struct drm_framebuffer *old_fb)
3272 struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
3273 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
3274 bool was_interruptible = dev_priv->mm.interruptible;
3277 /* Big Hammer, we also need to ensure that any pending
3278 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
3279 * current scanout is retired before unpinning the old
3280 * framebuffer. Note that we rely on userspace rendering
3281 * into the buffer attached to the pipe they are waiting
3282 * on. If not, userspace generates a GPU hang with IPEHR
3283 * point to the MI_WAIT_FOR_EVENT.
3285 * This should only fail upon a hung GPU, in which case we
3286 * can safely continue.
3288 dev_priv->mm.interruptible = false;
3289 ret = i915_gem_object_wait_rendering(obj, true);
3290 dev_priv->mm.interruptible = was_interruptible;
3295 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3297 struct drm_device *dev = crtc->dev;
3298 struct drm_i915_private *dev_priv = dev->dev_private;
3299 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3302 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
3303 intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
3306 spin_lock_irq(&dev->event_lock);
3307 pending = to_intel_crtc(crtc)->unpin_work != NULL;
3308 spin_unlock_irq(&dev->event_lock);
3313 static void intel_update_pipe_size(struct intel_crtc *crtc)
3315 struct drm_device *dev = crtc->base.dev;
3316 struct drm_i915_private *dev_priv = dev->dev_private;
3317 const struct drm_display_mode *adjusted_mode;
3323 * Update pipe size and adjust fitter if needed: the reason for this is
3324 * that in compute_mode_changes we check the native mode (not the pfit
3325 * mode) to see if we can flip rather than do a full mode set. In the
3326 * fastboot case, we'll flip, but if we don't update the pipesrc and
3327 * pfit state, we'll end up with a big fb scanned out into the wrong
3330 * To fix this properly, we need to hoist the checks up into
3331 * compute_mode_changes (or above), check the actual pfit state and
3332 * whether the platform allows pfit disable with pipe active, and only
3333 * then update the pipesrc and pfit state, even on the flip path.
3336 adjusted_mode = &crtc->config->base.adjusted_mode;
3338 I915_WRITE(PIPESRC(crtc->pipe),
3339 ((adjusted_mode->crtc_hdisplay - 1) << 16) |
3340 (adjusted_mode->crtc_vdisplay - 1));
3341 if (!crtc->config->pch_pfit.enabled &&
3342 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
3343 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
3344 I915_WRITE(PF_CTL(crtc->pipe), 0);
3345 I915_WRITE(PF_WIN_POS(crtc->pipe), 0);
3346 I915_WRITE(PF_WIN_SZ(crtc->pipe), 0);
3348 crtc->config->pipe_src_w = adjusted_mode->crtc_hdisplay;
3349 crtc->config->pipe_src_h = adjusted_mode->crtc_vdisplay;
3352 static void intel_fdi_normal_train(struct drm_crtc *crtc)
3354 struct drm_device *dev = crtc->dev;
3355 struct drm_i915_private *dev_priv = dev->dev_private;
3356 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3357 int pipe = intel_crtc->pipe;
3360 /* enable normal train */
3361 reg = FDI_TX_CTL(pipe);
3362 temp = I915_READ(reg);
3363 if (IS_IVYBRIDGE(dev)) {
3364 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3365 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
3367 temp &= ~FDI_LINK_TRAIN_NONE;
3368 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
3370 I915_WRITE(reg, temp);
3372 reg = FDI_RX_CTL(pipe);
3373 temp = I915_READ(reg);
3374 if (HAS_PCH_CPT(dev)) {
3375 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3376 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3378 temp &= ~FDI_LINK_TRAIN_NONE;
3379 temp |= FDI_LINK_TRAIN_NONE;
3381 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3383 /* wait one idle pattern time */
3387 /* IVB wants error correction enabled */
3388 if (IS_IVYBRIDGE(dev))
3389 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3390 FDI_FE_ERRC_ENABLE);
3393 /* The FDI link training functions for ILK/Ibexpeak. */
3394 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3396 struct drm_device *dev = crtc->dev;
3397 struct drm_i915_private *dev_priv = dev->dev_private;
3398 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3399 int pipe = intel_crtc->pipe;
3400 u32 reg, temp, tries;
3402 /* FDI needs bits from pipe first */
3403 assert_pipe_enabled(dev_priv, pipe);
3405 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3407 reg = FDI_RX_IMR(pipe);
3408 temp = I915_READ(reg);
3409 temp &= ~FDI_RX_SYMBOL_LOCK;
3410 temp &= ~FDI_RX_BIT_LOCK;
3411 I915_WRITE(reg, temp);
3415 /* enable CPU FDI TX and PCH FDI RX */
3416 reg = FDI_TX_CTL(pipe);
3417 temp = I915_READ(reg);
3418 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3419 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3420 temp &= ~FDI_LINK_TRAIN_NONE;
3421 temp |= FDI_LINK_TRAIN_PATTERN_1;
3422 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3424 reg = FDI_RX_CTL(pipe);
3425 temp = I915_READ(reg);
3426 temp &= ~FDI_LINK_TRAIN_NONE;
3427 temp |= FDI_LINK_TRAIN_PATTERN_1;
3428 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3433 /* Ironlake workaround, enable clock pointer after FDI enable*/
3434 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3435 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3436 FDI_RX_PHASE_SYNC_POINTER_EN);
3438 reg = FDI_RX_IIR(pipe);
3439 for (tries = 0; tries < 5; tries++) {
3440 temp = I915_READ(reg);
3441 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3443 if ((temp & FDI_RX_BIT_LOCK)) {
3444 DRM_DEBUG_KMS("FDI train 1 done.\n");
3445 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3450 DRM_ERROR("FDI train 1 fail!\n");
3453 reg = FDI_TX_CTL(pipe);
3454 temp = I915_READ(reg);
3455 temp &= ~FDI_LINK_TRAIN_NONE;
3456 temp |= FDI_LINK_TRAIN_PATTERN_2;
3457 I915_WRITE(reg, temp);
3459 reg = FDI_RX_CTL(pipe);
3460 temp = I915_READ(reg);
3461 temp &= ~FDI_LINK_TRAIN_NONE;
3462 temp |= FDI_LINK_TRAIN_PATTERN_2;
3463 I915_WRITE(reg, temp);
3468 reg = FDI_RX_IIR(pipe);
3469 for (tries = 0; tries < 5; tries++) {
3470 temp = I915_READ(reg);
3471 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3473 if (temp & FDI_RX_SYMBOL_LOCK) {
3474 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3475 DRM_DEBUG_KMS("FDI train 2 done.\n");
3480 DRM_ERROR("FDI train 2 fail!\n");
3482 DRM_DEBUG_KMS("FDI train done\n");
3486 static const int snb_b_fdi_train_param[] = {
3487 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3488 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3489 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3490 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3493 /* The FDI link training functions for SNB/Cougarpoint. */
3494 static void gen6_fdi_link_train(struct drm_crtc *crtc)
3496 struct drm_device *dev = crtc->dev;
3497 struct drm_i915_private *dev_priv = dev->dev_private;
3498 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3499 int pipe = intel_crtc->pipe;
3500 u32 reg, temp, i, retry;
3502 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3504 reg = FDI_RX_IMR(pipe);
3505 temp = I915_READ(reg);
3506 temp &= ~FDI_RX_SYMBOL_LOCK;
3507 temp &= ~FDI_RX_BIT_LOCK;
3508 I915_WRITE(reg, temp);
3513 /* enable CPU FDI TX and PCH FDI RX */
3514 reg = FDI_TX_CTL(pipe);
3515 temp = I915_READ(reg);
3516 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3517 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3518 temp &= ~FDI_LINK_TRAIN_NONE;
3519 temp |= FDI_LINK_TRAIN_PATTERN_1;
3520 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3522 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3523 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3525 I915_WRITE(FDI_RX_MISC(pipe),
3526 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3528 reg = FDI_RX_CTL(pipe);
3529 temp = I915_READ(reg);
3530 if (HAS_PCH_CPT(dev)) {
3531 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3532 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3534 temp &= ~FDI_LINK_TRAIN_NONE;
3535 temp |= FDI_LINK_TRAIN_PATTERN_1;
3537 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3542 for (i = 0; i < 4; i++) {
3543 reg = FDI_TX_CTL(pipe);
3544 temp = I915_READ(reg);
3545 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3546 temp |= snb_b_fdi_train_param[i];
3547 I915_WRITE(reg, temp);
3552 for (retry = 0; retry < 5; retry++) {
3553 reg = FDI_RX_IIR(pipe);
3554 temp = I915_READ(reg);
3555 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3556 if (temp & FDI_RX_BIT_LOCK) {
3557 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3558 DRM_DEBUG_KMS("FDI train 1 done.\n");
3567 DRM_ERROR("FDI train 1 fail!\n");
3570 reg = FDI_TX_CTL(pipe);
3571 temp = I915_READ(reg);
3572 temp &= ~FDI_LINK_TRAIN_NONE;
3573 temp |= FDI_LINK_TRAIN_PATTERN_2;
3575 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3577 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3579 I915_WRITE(reg, temp);
3581 reg = FDI_RX_CTL(pipe);
3582 temp = I915_READ(reg);
3583 if (HAS_PCH_CPT(dev)) {
3584 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3585 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3587 temp &= ~FDI_LINK_TRAIN_NONE;
3588 temp |= FDI_LINK_TRAIN_PATTERN_2;
3590 I915_WRITE(reg, temp);
3595 for (i = 0; i < 4; i++) {
3596 reg = FDI_TX_CTL(pipe);
3597 temp = I915_READ(reg);
3598 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3599 temp |= snb_b_fdi_train_param[i];
3600 I915_WRITE(reg, temp);
3605 for (retry = 0; retry < 5; retry++) {
3606 reg = FDI_RX_IIR(pipe);
3607 temp = I915_READ(reg);
3608 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3609 if (temp & FDI_RX_SYMBOL_LOCK) {
3610 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3611 DRM_DEBUG_KMS("FDI train 2 done.\n");
3620 DRM_ERROR("FDI train 2 fail!\n");
3622 DRM_DEBUG_KMS("FDI train done.\n");
3625 /* Manual link training for Ivy Bridge A0 parts */
3626 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3628 struct drm_device *dev = crtc->dev;
3629 struct drm_i915_private *dev_priv = dev->dev_private;
3630 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3631 int pipe = intel_crtc->pipe;
3632 u32 reg, temp, i, j;
3634 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3636 reg = FDI_RX_IMR(pipe);
3637 temp = I915_READ(reg);
3638 temp &= ~FDI_RX_SYMBOL_LOCK;
3639 temp &= ~FDI_RX_BIT_LOCK;
3640 I915_WRITE(reg, temp);
3645 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3646 I915_READ(FDI_RX_IIR(pipe)));
3648 /* Try each vswing and preemphasis setting twice before moving on */
3649 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3650 /* disable first in case we need to retry */
3651 reg = FDI_TX_CTL(pipe);
3652 temp = I915_READ(reg);
3653 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3654 temp &= ~FDI_TX_ENABLE;
3655 I915_WRITE(reg, temp);
3657 reg = FDI_RX_CTL(pipe);
3658 temp = I915_READ(reg);
3659 temp &= ~FDI_LINK_TRAIN_AUTO;
3660 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3661 temp &= ~FDI_RX_ENABLE;
3662 I915_WRITE(reg, temp);
3664 /* enable CPU FDI TX and PCH FDI RX */
3665 reg = FDI_TX_CTL(pipe);
3666 temp = I915_READ(reg);
3667 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3668 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3669 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
3670 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3671 temp |= snb_b_fdi_train_param[j/2];
3672 temp |= FDI_COMPOSITE_SYNC;
3673 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3675 I915_WRITE(FDI_RX_MISC(pipe),
3676 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3678 reg = FDI_RX_CTL(pipe);
3679 temp = I915_READ(reg);
3680 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3681 temp |= FDI_COMPOSITE_SYNC;
3682 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3685 udelay(1); /* should be 0.5us */
3687 for (i = 0; i < 4; i++) {
3688 reg = FDI_RX_IIR(pipe);
3689 temp = I915_READ(reg);
3690 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3692 if (temp & FDI_RX_BIT_LOCK ||
3693 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3694 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3695 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3699 udelay(1); /* should be 0.5us */
3702 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3707 reg = FDI_TX_CTL(pipe);
3708 temp = I915_READ(reg);
3709 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3710 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3711 I915_WRITE(reg, temp);
3713 reg = FDI_RX_CTL(pipe);
3714 temp = I915_READ(reg);
3715 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3716 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3717 I915_WRITE(reg, temp);
3720 udelay(2); /* should be 1.5us */
3722 for (i = 0; i < 4; i++) {
3723 reg = FDI_RX_IIR(pipe);
3724 temp = I915_READ(reg);
3725 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3727 if (temp & FDI_RX_SYMBOL_LOCK ||
3728 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3729 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3730 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3734 udelay(2); /* should be 1.5us */
3737 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
3741 DRM_DEBUG_KMS("FDI train done.\n");
3744 static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
3746 struct drm_device *dev = intel_crtc->base.dev;
3747 struct drm_i915_private *dev_priv = dev->dev_private;
3748 int pipe = intel_crtc->pipe;
3752 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
3753 reg = FDI_RX_CTL(pipe);
3754 temp = I915_READ(reg);
3755 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
3756 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3757 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3758 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3763 /* Switch from Rawclk to PCDclk */
3764 temp = I915_READ(reg);
3765 I915_WRITE(reg, temp | FDI_PCDCLK);
3770 /* Enable CPU FDI TX PLL, always on for Ironlake */
3771 reg = FDI_TX_CTL(pipe);
3772 temp = I915_READ(reg);
3773 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3774 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
3781 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3783 struct drm_device *dev = intel_crtc->base.dev;
3784 struct drm_i915_private *dev_priv = dev->dev_private;
3785 int pipe = intel_crtc->pipe;
3788 /* Switch from PCDclk to Rawclk */
3789 reg = FDI_RX_CTL(pipe);
3790 temp = I915_READ(reg);
3791 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3793 /* Disable CPU FDI TX PLL */
3794 reg = FDI_TX_CTL(pipe);
3795 temp = I915_READ(reg);
3796 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3801 reg = FDI_RX_CTL(pipe);
3802 temp = I915_READ(reg);
3803 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3805 /* Wait for the clocks to turn off. */
3810 static void ironlake_fdi_disable(struct drm_crtc *crtc)
3812 struct drm_device *dev = crtc->dev;
3813 struct drm_i915_private *dev_priv = dev->dev_private;
3814 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3815 int pipe = intel_crtc->pipe;
3818 /* disable CPU FDI tx and PCH FDI rx */
3819 reg = FDI_TX_CTL(pipe);
3820 temp = I915_READ(reg);
3821 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3824 reg = FDI_RX_CTL(pipe);
3825 temp = I915_READ(reg);
3826 temp &= ~(0x7 << 16);
3827 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3828 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3833 /* Ironlake workaround, disable clock pointer after downing FDI */
3834 if (HAS_PCH_IBX(dev))
3835 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3837 /* still set train pattern 1 */
3838 reg = FDI_TX_CTL(pipe);
3839 temp = I915_READ(reg);
3840 temp &= ~FDI_LINK_TRAIN_NONE;
3841 temp |= FDI_LINK_TRAIN_PATTERN_1;
3842 I915_WRITE(reg, temp);
3844 reg = FDI_RX_CTL(pipe);
3845 temp = I915_READ(reg);
3846 if (HAS_PCH_CPT(dev)) {
3847 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3848 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3850 temp &= ~FDI_LINK_TRAIN_NONE;
3851 temp |= FDI_LINK_TRAIN_PATTERN_1;
3853 /* BPC in FDI rx is consistent with that in PIPECONF */
3854 temp &= ~(0x07 << 16);
3855 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3856 I915_WRITE(reg, temp);
3862 bool intel_has_pending_fb_unpin(struct drm_device *dev)
3864 struct intel_crtc *crtc;
3866 /* Note that we don't need to be called with mode_config.lock here
3867 * as our list of CRTC objects is static for the lifetime of the
3868 * device and so cannot disappear as we iterate. Similarly, we can
3869 * happily treat the predicates as racy, atomic checks as userspace
3870 * cannot claim and pin a new fb without at least acquring the
3871 * struct_mutex and so serialising with us.
3873 for_each_intel_crtc(dev, crtc) {
3874 if (atomic_read(&crtc->unpin_work_count) == 0)
3877 if (crtc->unpin_work)
3878 intel_wait_for_vblank(dev, crtc->pipe);
3886 static void page_flip_completed(struct intel_crtc *intel_crtc)
3888 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3889 struct intel_unpin_work *work = intel_crtc->unpin_work;
3891 /* ensure that the unpin work is consistent wrt ->pending. */
3893 intel_crtc->unpin_work = NULL;
3896 drm_send_vblank_event(intel_crtc->base.dev,
3900 drm_crtc_vblank_put(&intel_crtc->base);
3902 wake_up_all(&dev_priv->pending_flip_queue);
3903 queue_work(dev_priv->wq, &work->work);
3905 trace_i915_flip_complete(intel_crtc->plane,
3906 work->pending_flip_obj);
3909 void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
3911 struct drm_device *dev = crtc->dev;
3912 struct drm_i915_private *dev_priv = dev->dev_private;
3914 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
3915 if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
3916 !intel_crtc_has_pending_flip(crtc),
3918 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3920 spin_lock_irq(&dev->event_lock);
3921 if (intel_crtc->unpin_work) {
3922 WARN_ONCE(1, "Removing stuck page flip\n");
3923 page_flip_completed(intel_crtc);
3925 spin_unlock_irq(&dev->event_lock);
3928 if (crtc->primary->fb) {
3929 mutex_lock(&dev->struct_mutex);
3930 intel_finish_fb(crtc->primary->fb);
3931 mutex_unlock(&dev->struct_mutex);
3935 /* Program iCLKIP clock to the desired frequency */
3936 static void lpt_program_iclkip(struct drm_crtc *crtc)
3938 struct drm_device *dev = crtc->dev;
3939 struct drm_i915_private *dev_priv = dev->dev_private;
3940 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
3941 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3944 mutex_lock(&dev_priv->sb_lock);
3946 /* It is necessary to ungate the pixclk gate prior to programming
3947 * the divisors, and gate it back when it is done.
3949 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3951 /* Disable SSCCTL */
3952 intel_sbi_write(dev_priv, SBI_SSCCTL6,
3953 intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
3957 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
3958 if (clock == 20000) {
3963 /* The iCLK virtual clock root frequency is in MHz,
3964 * but the adjusted_mode->crtc_clock in in KHz. To get the
3965 * divisors, it is necessary to divide one by another, so we
3966 * convert the virtual clock precision to KHz here for higher
3969 u32 iclk_virtual_root_freq = 172800 * 1000;
3970 u32 iclk_pi_range = 64;
3971 u32 desired_divisor, msb_divisor_value, pi_value;
3973 desired_divisor = (iclk_virtual_root_freq / clock);
3974 msb_divisor_value = desired_divisor / iclk_pi_range;
3975 pi_value = desired_divisor % iclk_pi_range;
3978 divsel = msb_divisor_value - 2;
3979 phaseinc = pi_value;
3982 /* This should not happen with any sane values */
3983 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
3984 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
3985 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
3986 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
3988 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
3995 /* Program SSCDIVINTPHASE6 */
3996 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
3997 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
3998 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
3999 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
4000 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
4001 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
4002 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
4003 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
4005 /* Program SSCAUXDIV */
4006 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
4007 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
4008 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
4009 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
4011 /* Enable modulator and associated divider */
4012 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
4013 temp &= ~SBI_SSCCTL_DISABLE;
4014 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
4016 /* Wait for initialization time */
4019 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
4021 mutex_unlock(&dev_priv->sb_lock);
4024 static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
4025 enum pipe pch_transcoder)
4027 struct drm_device *dev = crtc->base.dev;
4028 struct drm_i915_private *dev_priv = dev->dev_private;
4029 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
4031 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
4032 I915_READ(HTOTAL(cpu_transcoder)));
4033 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
4034 I915_READ(HBLANK(cpu_transcoder)));
4035 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
4036 I915_READ(HSYNC(cpu_transcoder)));
4038 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
4039 I915_READ(VTOTAL(cpu_transcoder)));
4040 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
4041 I915_READ(VBLANK(cpu_transcoder)));
4042 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
4043 I915_READ(VSYNC(cpu_transcoder)));
4044 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4045 I915_READ(VSYNCSHIFT(cpu_transcoder)));
4048 static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
4050 struct drm_i915_private *dev_priv = dev->dev_private;
4053 temp = I915_READ(SOUTH_CHICKEN1);
4054 if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
4057 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4058 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4060 temp &= ~FDI_BC_BIFURCATION_SELECT;
4062 temp |= FDI_BC_BIFURCATION_SELECT;
4064 DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
4065 I915_WRITE(SOUTH_CHICKEN1, temp);
4066 POSTING_READ(SOUTH_CHICKEN1);
4069 static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
4071 struct drm_device *dev = intel_crtc->base.dev;
4073 switch (intel_crtc->pipe) {
4077 if (intel_crtc->config->fdi_lanes > 2)
4078 cpt_set_fdi_bc_bifurcation(dev, false);
4080 cpt_set_fdi_bc_bifurcation(dev, true);
4084 cpt_set_fdi_bc_bifurcation(dev, true);
4093 * Enable PCH resources required for PCH ports:
4095 * - FDI training & RX/TX
4096 * - update transcoder timings
4097 * - DP transcoding bits
4100 static void ironlake_pch_enable(struct drm_crtc *crtc)
4102 struct drm_device *dev = crtc->dev;
4103 struct drm_i915_private *dev_priv = dev->dev_private;
4104 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4105 int pipe = intel_crtc->pipe;
4108 assert_pch_transcoder_disabled(dev_priv, pipe);
4110 if (IS_IVYBRIDGE(dev))
4111 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
4113 /* Write the TU size bits before fdi link training, so that error
4114 * detection works. */
4115 I915_WRITE(FDI_RX_TUSIZE1(pipe),
4116 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4118 /* For PCH output, training FDI link */
4119 dev_priv->display.fdi_link_train(crtc);
4121 /* We need to program the right clock selection before writing the pixel
4122 * mutliplier into the DPLL. */
4123 if (HAS_PCH_CPT(dev)) {
4126 temp = I915_READ(PCH_DPLL_SEL);
4127 temp |= TRANS_DPLL_ENABLE(pipe);
4128 sel = TRANS_DPLLB_SEL(pipe);
4129 if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
4133 I915_WRITE(PCH_DPLL_SEL, temp);
4136 /* XXX: pch pll's can be enabled any time before we enable the PCH
4137 * transcoder, and we actually should do this to not upset any PCH
4138 * transcoder that already use the clock when we share it.
4140 * Note that enable_shared_dpll tries to do the right thing, but
4141 * get_shared_dpll unconditionally resets the pll - we need that to have
4142 * the right LVDS enable sequence. */
4143 intel_enable_shared_dpll(intel_crtc);
4145 /* set transcoder timing, panel must allow it */
4146 assert_panel_unlocked(dev_priv, pipe);
4147 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
4149 intel_fdi_normal_train(crtc);
4151 /* For PCH DP, enable TRANS_DP_CTL */
4152 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
4153 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
4154 reg = TRANS_DP_CTL(pipe);
4155 temp = I915_READ(reg);
4156 temp &= ~(TRANS_DP_PORT_SEL_MASK |
4157 TRANS_DP_SYNC_MASK |
4159 temp |= TRANS_DP_OUTPUT_ENABLE;
4160 temp |= bpc << 9; /* same format but at 11:9 */
4162 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
4163 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
4164 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
4165 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
4167 switch (intel_trans_dp_port_sel(crtc)) {
4169 temp |= TRANS_DP_PORT_SEL_B;
4172 temp |= TRANS_DP_PORT_SEL_C;
4175 temp |= TRANS_DP_PORT_SEL_D;
4181 I915_WRITE(reg, temp);
4184 ironlake_enable_pch_transcoder(dev_priv, pipe);
4187 static void lpt_pch_enable(struct drm_crtc *crtc)
4189 struct drm_device *dev = crtc->dev;
4190 struct drm_i915_private *dev_priv = dev->dev_private;
4191 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4192 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4194 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
4196 lpt_program_iclkip(crtc);
4198 /* Set transcoder timing. */
4199 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
4201 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
4204 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
4205 struct intel_crtc_state *crtc_state)
4207 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
4208 struct intel_shared_dpll *pll;
4209 struct intel_shared_dpll_config *shared_dpll;
4210 enum intel_dpll_id i;
4212 shared_dpll = intel_atomic_get_shared_dpll_state(crtc_state->base.state);
4214 if (HAS_PCH_IBX(dev_priv->dev)) {
4215 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
4216 i = (enum intel_dpll_id) crtc->pipe;
4217 pll = &dev_priv->shared_dplls[i];
4219 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4220 crtc->base.base.id, pll->name);
4222 WARN_ON(shared_dpll[i].crtc_mask);
4227 if (IS_BROXTON(dev_priv->dev)) {
4228 /* PLL is attached to port in bxt */
4229 struct intel_encoder *encoder;
4230 struct intel_digital_port *intel_dig_port;
4232 encoder = intel_ddi_get_crtc_new_encoder(crtc_state);
4233 if (WARN_ON(!encoder))
4236 intel_dig_port = enc_to_dig_port(&encoder->base);
4237 /* 1:1 mapping between ports and PLLs */
4238 i = (enum intel_dpll_id)intel_dig_port->port;
4239 pll = &dev_priv->shared_dplls[i];
4240 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4241 crtc->base.base.id, pll->name);
4242 WARN_ON(shared_dpll[i].crtc_mask);
4247 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4248 pll = &dev_priv->shared_dplls[i];
4250 /* Only want to check enabled timings first */
4251 if (shared_dpll[i].crtc_mask == 0)
4254 if (memcmp(&crtc_state->dpll_hw_state,
4255 &shared_dpll[i].hw_state,
4256 sizeof(crtc_state->dpll_hw_state)) == 0) {
4257 DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
4258 crtc->base.base.id, pll->name,
4259 shared_dpll[i].crtc_mask,
4265 /* Ok no matching timings, maybe there's a free one? */
4266 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4267 pll = &dev_priv->shared_dplls[i];
4268 if (shared_dpll[i].crtc_mask == 0) {
4269 DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
4270 crtc->base.base.id, pll->name);
4278 if (shared_dpll[i].crtc_mask == 0)
4279 shared_dpll[i].hw_state =
4280 crtc_state->dpll_hw_state;
4282 crtc_state->shared_dpll = i;
4283 DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
4284 pipe_name(crtc->pipe));
4286 shared_dpll[i].crtc_mask |= 1 << crtc->pipe;
4291 static void intel_shared_dpll_commit(struct drm_atomic_state *state)
4293 struct drm_i915_private *dev_priv = to_i915(state->dev);
4294 struct intel_shared_dpll_config *shared_dpll;
4295 struct intel_shared_dpll *pll;
4296 enum intel_dpll_id i;
4298 if (!to_intel_atomic_state(state)->dpll_set)
4301 shared_dpll = to_intel_atomic_state(state)->shared_dpll;
4302 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4303 pll = &dev_priv->shared_dplls[i];
4304 pll->config = shared_dpll[i];
4308 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4310 struct drm_i915_private *dev_priv = dev->dev_private;
4311 int dslreg = PIPEDSL(pipe);
4314 temp = I915_READ(dslreg);
4316 if (wait_for(I915_READ(dslreg) != temp, 5)) {
4317 if (wait_for(I915_READ(dslreg) != temp, 5))
4318 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4323 skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
4324 unsigned scaler_user, int *scaler_id, unsigned int rotation,
4325 int src_w, int src_h, int dst_w, int dst_h)
4327 struct intel_crtc_scaler_state *scaler_state =
4328 &crtc_state->scaler_state;
4329 struct intel_crtc *intel_crtc =
4330 to_intel_crtc(crtc_state->base.crtc);
4333 need_scaling = intel_rotation_90_or_270(rotation) ?
4334 (src_h != dst_w || src_w != dst_h):
4335 (src_w != dst_w || src_h != dst_h);
4338 * if plane is being disabled or scaler is no more required or force detach
4339 * - free scaler binded to this plane/crtc
4340 * - in order to do this, update crtc->scaler_usage
4342 * Here scaler state in crtc_state is set free so that
4343 * scaler can be assigned to other user. Actual register
4344 * update to free the scaler is done in plane/panel-fit programming.
4345 * For this purpose crtc/plane_state->scaler_id isn't reset here.
4347 if (force_detach || !need_scaling) {
4348 if (*scaler_id >= 0) {
4349 scaler_state->scaler_users &= ~(1 << scaler_user);
4350 scaler_state->scalers[*scaler_id].in_use = 0;
4352 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4353 "Staged freeing scaler id %d scaler_users = 0x%x\n",
4354 intel_crtc->pipe, scaler_user, *scaler_id,
4355 scaler_state->scaler_users);
4362 if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
4363 dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
4365 src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
4366 dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
4367 DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
4368 "size is out of scaler range\n",
4369 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
4373 /* mark this plane as a scaler user in crtc_state */
4374 scaler_state->scaler_users |= (1 << scaler_user);
4375 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4376 "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
4377 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
4378 scaler_state->scaler_users);
4384 * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
4386 * @state: crtc's scaler state
4389 * 0 - scaler_usage updated successfully
4390 * error - requested scaling cannot be supported or other error condition
4392 int skl_update_scaler_crtc(struct intel_crtc_state *state)
4394 struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
4395 struct drm_display_mode *adjusted_mode =
4396 &state->base.adjusted_mode;
4398 DRM_DEBUG_KMS("Updating scaler for [CRTC:%i] scaler_user index %u.%u\n",
4399 intel_crtc->base.base.id, intel_crtc->pipe, SKL_CRTC_INDEX);
4401 return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
4402 &state->scaler_state.scaler_id, DRM_ROTATE_0,
4403 state->pipe_src_w, state->pipe_src_h,
4404 adjusted_mode->hdisplay, adjusted_mode->vdisplay);
4408 * skl_update_scaler_plane - Stages update to scaler state for a given plane.
4410 * @state: crtc's scaler state
4411 * @plane_state: atomic plane state to update
4414 * 0 - scaler_usage updated successfully
4415 * error - requested scaling cannot be supported or other error condition
4417 static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
4418 struct intel_plane_state *plane_state)
4421 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
4422 struct intel_plane *intel_plane =
4423 to_intel_plane(plane_state->base.plane);
4424 struct drm_framebuffer *fb = plane_state->base.fb;
4427 bool force_detach = !fb || !plane_state->visible;
4429 DRM_DEBUG_KMS("Updating scaler for [PLANE:%d] scaler_user index %u.%u\n",
4430 intel_plane->base.base.id, intel_crtc->pipe,
4431 drm_plane_index(&intel_plane->base));
4433 ret = skl_update_scaler(crtc_state, force_detach,
4434 drm_plane_index(&intel_plane->base),
4435 &plane_state->scaler_id,
4436 plane_state->base.rotation,
4437 drm_rect_width(&plane_state->src) >> 16,
4438 drm_rect_height(&plane_state->src) >> 16,
4439 drm_rect_width(&plane_state->dst),
4440 drm_rect_height(&plane_state->dst));
4442 if (ret || plane_state->scaler_id < 0)
4445 /* check colorkey */
4446 if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
4447 DRM_DEBUG_KMS("[PLANE:%d] scaling with color key not allowed",
4448 intel_plane->base.base.id);
4452 /* Check src format */
4453 switch (fb->pixel_format) {
4454 case DRM_FORMAT_RGB565:
4455 case DRM_FORMAT_XBGR8888:
4456 case DRM_FORMAT_XRGB8888:
4457 case DRM_FORMAT_ABGR8888:
4458 case DRM_FORMAT_ARGB8888:
4459 case DRM_FORMAT_XRGB2101010:
4460 case DRM_FORMAT_XBGR2101010:
4461 case DRM_FORMAT_YUYV:
4462 case DRM_FORMAT_YVYU:
4463 case DRM_FORMAT_UYVY:
4464 case DRM_FORMAT_VYUY:
4467 DRM_DEBUG_KMS("[PLANE:%d] FB:%d unsupported scaling format 0x%x\n",
4468 intel_plane->base.base.id, fb->base.id, fb->pixel_format);
4475 static void skylake_scaler_disable(struct intel_crtc *crtc)
4479 for (i = 0; i < crtc->num_scalers; i++)
4480 skl_detach_scaler(crtc, i);
4483 static void skylake_pfit_enable(struct intel_crtc *crtc)
4485 struct drm_device *dev = crtc->base.dev;
4486 struct drm_i915_private *dev_priv = dev->dev_private;
4487 int pipe = crtc->pipe;
4488 struct intel_crtc_scaler_state *scaler_state =
4489 &crtc->config->scaler_state;
4491 DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
4493 if (crtc->config->pch_pfit.enabled) {
4496 if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
4497 DRM_ERROR("Requesting pfit without getting a scaler first\n");
4501 id = scaler_state->scaler_id;
4502 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
4503 PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
4504 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
4505 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
4507 DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
4511 static void ironlake_pfit_enable(struct intel_crtc *crtc)
4513 struct drm_device *dev = crtc->base.dev;
4514 struct drm_i915_private *dev_priv = dev->dev_private;
4515 int pipe = crtc->pipe;
4517 if (crtc->config->pch_pfit.enabled) {
4518 /* Force use of hard-coded filter coefficients
4519 * as some pre-programmed values are broken,
4522 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4523 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4524 PF_PIPE_SEL_IVB(pipe));
4526 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
4527 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4528 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4532 void hsw_enable_ips(struct intel_crtc *crtc)
4534 struct drm_device *dev = crtc->base.dev;
4535 struct drm_i915_private *dev_priv = dev->dev_private;
4537 if (!crtc->config->ips_enabled)
4540 /* We can only enable IPS after we enable a plane and wait for a vblank */
4541 intel_wait_for_vblank(dev, crtc->pipe);
4543 assert_plane_enabled(dev_priv, crtc->plane);
4544 if (IS_BROADWELL(dev)) {
4545 mutex_lock(&dev_priv->rps.hw_lock);
4546 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4547 mutex_unlock(&dev_priv->rps.hw_lock);
4548 /* Quoting Art Runyan: "its not safe to expect any particular
4549 * value in IPS_CTL bit 31 after enabling IPS through the
4550 * mailbox." Moreover, the mailbox may return a bogus state,
4551 * so we need to just enable it and continue on.
4554 I915_WRITE(IPS_CTL, IPS_ENABLE);
4555 /* The bit only becomes 1 in the next vblank, so this wait here
4556 * is essentially intel_wait_for_vblank. If we don't have this
4557 * and don't wait for vblanks until the end of crtc_enable, then
4558 * the HW state readout code will complain that the expected
4559 * IPS_CTL value is not the one we read. */
4560 if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
4561 DRM_ERROR("Timed out waiting for IPS enable\n");
4565 void hsw_disable_ips(struct intel_crtc *crtc)
4567 struct drm_device *dev = crtc->base.dev;
4568 struct drm_i915_private *dev_priv = dev->dev_private;
4570 if (!crtc->config->ips_enabled)
4573 assert_plane_enabled(dev_priv, crtc->plane);
4574 if (IS_BROADWELL(dev)) {
4575 mutex_lock(&dev_priv->rps.hw_lock);
4576 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4577 mutex_unlock(&dev_priv->rps.hw_lock);
4578 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4579 if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
4580 DRM_ERROR("Timed out waiting for IPS disable\n");
4582 I915_WRITE(IPS_CTL, 0);
4583 POSTING_READ(IPS_CTL);
4586 /* We need to wait for a vblank before we can disable the plane. */
4587 intel_wait_for_vblank(dev, crtc->pipe);
4590 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4591 static void intel_crtc_load_lut(struct drm_crtc *crtc)
4593 struct drm_device *dev = crtc->dev;
4594 struct drm_i915_private *dev_priv = dev->dev_private;
4595 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4596 enum pipe pipe = intel_crtc->pipe;
4597 int palreg = PALETTE(pipe);
4599 bool reenable_ips = false;
4601 /* The clocks have to be on to load the palette. */
4602 if (!crtc->state->active)
4605 if (HAS_GMCH_DISPLAY(dev_priv->dev)) {
4606 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
4607 assert_dsi_pll_enabled(dev_priv);
4609 assert_pll_enabled(dev_priv, pipe);
4612 /* use legacy palette for Ironlake */
4613 if (!HAS_GMCH_DISPLAY(dev))
4614 palreg = LGC_PALETTE(pipe);
4616 /* Workaround : Do not read or write the pipe palette/gamma data while
4617 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
4619 if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
4620 ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
4621 GAMMA_MODE_MODE_SPLIT)) {
4622 hsw_disable_ips(intel_crtc);
4623 reenable_ips = true;
4626 for (i = 0; i < 256; i++) {
4627 I915_WRITE(palreg + 4 * i,
4628 (intel_crtc->lut_r[i] << 16) |
4629 (intel_crtc->lut_g[i] << 8) |
4630 intel_crtc->lut_b[i]);
4634 hsw_enable_ips(intel_crtc);
4637 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
4639 if (intel_crtc->overlay) {
4640 struct drm_device *dev = intel_crtc->base.dev;
4641 struct drm_i915_private *dev_priv = dev->dev_private;
4643 mutex_lock(&dev->struct_mutex);
4644 dev_priv->mm.interruptible = false;
4645 (void) intel_overlay_switch_off(intel_crtc->overlay);
4646 dev_priv->mm.interruptible = true;
4647 mutex_unlock(&dev->struct_mutex);
4650 /* Let userspace switch the overlay on again. In most cases userspace
4651 * has to recompute where to put it anyway.
4656 * intel_post_enable_primary - Perform operations after enabling primary plane
4657 * @crtc: the CRTC whose primary plane was just enabled
4659 * Performs potentially sleeping operations that must be done after the primary
4660 * plane is enabled, such as updating FBC and IPS. Note that this may be
4661 * called due to an explicit primary plane update, or due to an implicit
4662 * re-enable that is caused when a sprite plane is updated to no longer
4663 * completely hide the primary plane.
4666 intel_post_enable_primary(struct drm_crtc *crtc)
4668 struct drm_device *dev = crtc->dev;
4669 struct drm_i915_private *dev_priv = dev->dev_private;
4670 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4671 int pipe = intel_crtc->pipe;
4674 * BDW signals flip done immediately if the plane
4675 * is disabled, even if the plane enable is already
4676 * armed to occur at the next vblank :(
4678 if (IS_BROADWELL(dev))
4679 intel_wait_for_vblank(dev, pipe);
4682 * FIXME IPS should be fine as long as one plane is
4683 * enabled, but in practice it seems to have problems
4684 * when going from primary only to sprite only and vice
4687 hsw_enable_ips(intel_crtc);
4690 * Gen2 reports pipe underruns whenever all planes are disabled.
4691 * So don't enable underrun reporting before at least some planes
4693 * FIXME: Need to fix the logic to work when we turn off all planes
4694 * but leave the pipe running.
4697 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4699 /* Underruns don't raise interrupts, so check manually. */
4700 if (HAS_GMCH_DISPLAY(dev))
4701 i9xx_check_fifo_underruns(dev_priv);
4705 * intel_pre_disable_primary - Perform operations before disabling primary plane
4706 * @crtc: the CRTC whose primary plane is to be disabled
4708 * Performs potentially sleeping operations that must be done before the
4709 * primary plane is disabled, such as updating FBC and IPS. Note that this may
4710 * be called due to an explicit primary plane update, or due to an implicit
4711 * disable that is caused when a sprite plane completely hides the primary
4715 intel_pre_disable_primary(struct drm_crtc *crtc)
4717 struct drm_device *dev = crtc->dev;
4718 struct drm_i915_private *dev_priv = dev->dev_private;
4719 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4720 int pipe = intel_crtc->pipe;
4723 * Gen2 reports pipe underruns whenever all planes are disabled.
4724 * So diasble underrun reporting before all the planes get disabled.
4725 * FIXME: Need to fix the logic to work when we turn off all planes
4726 * but leave the pipe running.
4729 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4732 * Vblank time updates from the shadow to live plane control register
4733 * are blocked if the memory self-refresh mode is active at that
4734 * moment. So to make sure the plane gets truly disabled, disable
4735 * first the self-refresh mode. The self-refresh enable bit in turn
4736 * will be checked/applied by the HW only at the next frame start
4737 * event which is after the vblank start event, so we need to have a
4738 * wait-for-vblank between disabling the plane and the pipe.
4740 if (HAS_GMCH_DISPLAY(dev)) {
4741 intel_set_memory_cxsr(dev_priv, false);
4742 dev_priv->wm.vlv.cxsr = false;
4743 intel_wait_for_vblank(dev, pipe);
4747 * FIXME IPS should be fine as long as one plane is
4748 * enabled, but in practice it seems to have problems
4749 * when going from primary only to sprite only and vice
4752 hsw_disable_ips(intel_crtc);
4755 static void intel_post_plane_update(struct intel_crtc *crtc)
4757 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4758 struct drm_device *dev = crtc->base.dev;
4759 struct drm_i915_private *dev_priv = dev->dev_private;
4760 struct drm_plane *plane;
4762 if (atomic->wait_vblank)
4763 intel_wait_for_vblank(dev, crtc->pipe);
4765 intel_frontbuffer_flip(dev, atomic->fb_bits);
4767 if (atomic->disable_cxsr)
4768 crtc->wm.cxsr_allowed = true;
4770 if (crtc->atomic.update_wm_post)
4771 intel_update_watermarks(&crtc->base);
4773 if (atomic->update_fbc)
4774 intel_fbc_update(dev_priv);
4776 if (atomic->post_enable_primary)
4777 intel_post_enable_primary(&crtc->base);
4779 drm_for_each_plane_mask(plane, dev, atomic->update_sprite_watermarks)
4780 intel_update_sprite_watermarks(plane, &crtc->base,
4781 0, 0, 0, false, false);
4783 memset(atomic, 0, sizeof(*atomic));
4786 static void intel_pre_plane_update(struct intel_crtc *crtc)
4788 struct drm_device *dev = crtc->base.dev;
4789 struct drm_i915_private *dev_priv = dev->dev_private;
4790 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4791 struct drm_plane *p;
4793 /* Track fb's for any planes being disabled */
4794 drm_for_each_plane_mask(p, dev, atomic->disabled_planes) {
4795 struct intel_plane *plane = to_intel_plane(p);
4797 mutex_lock(&dev->struct_mutex);
4798 i915_gem_track_fb(intel_fb_obj(plane->base.fb), NULL,
4799 plane->frontbuffer_bit);
4800 mutex_unlock(&dev->struct_mutex);
4803 if (atomic->wait_for_flips)
4804 intel_crtc_wait_for_pending_flips(&crtc->base);
4806 if (atomic->disable_fbc)
4807 intel_fbc_disable_crtc(crtc);
4809 if (crtc->atomic.disable_ips)
4810 hsw_disable_ips(crtc);
4812 if (atomic->pre_disable_primary)
4813 intel_pre_disable_primary(&crtc->base);
4815 if (atomic->disable_cxsr) {
4816 crtc->wm.cxsr_allowed = false;
4817 intel_set_memory_cxsr(dev_priv, false);
4821 static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask)
4823 struct drm_device *dev = crtc->dev;
4824 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4825 struct drm_plane *p;
4826 int pipe = intel_crtc->pipe;
4828 intel_crtc_dpms_overlay_disable(intel_crtc);
4830 drm_for_each_plane_mask(p, dev, plane_mask)
4831 to_intel_plane(p)->disable_plane(p, crtc);
4834 * FIXME: Once we grow proper nuclear flip support out of this we need
4835 * to compute the mask of flip planes precisely. For the time being
4836 * consider this a flip to a NULL plane.
4838 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4841 static void ironlake_crtc_enable(struct drm_crtc *crtc)
4843 struct drm_device *dev = crtc->dev;
4844 struct drm_i915_private *dev_priv = dev->dev_private;
4845 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4846 struct intel_encoder *encoder;
4847 int pipe = intel_crtc->pipe;
4849 if (WARN_ON(intel_crtc->active))
4852 if (intel_crtc->config->has_pch_encoder)
4853 intel_prepare_shared_dpll(intel_crtc);
4855 if (intel_crtc->config->has_dp_encoder)
4856 intel_dp_set_m_n(intel_crtc, M1_N1);
4858 intel_set_pipe_timings(intel_crtc);
4860 if (intel_crtc->config->has_pch_encoder) {
4861 intel_cpu_transcoder_set_m_n(intel_crtc,
4862 &intel_crtc->config->fdi_m_n, NULL);
4865 ironlake_set_pipeconf(crtc);
4867 intel_crtc->active = true;
4869 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4870 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
4872 for_each_encoder_on_crtc(dev, crtc, encoder)
4873 if (encoder->pre_enable)
4874 encoder->pre_enable(encoder);
4876 if (intel_crtc->config->has_pch_encoder) {
4877 /* Note: FDI PLL enabling _must_ be done before we enable the
4878 * cpu pipes, hence this is separate from all the other fdi/pch
4880 ironlake_fdi_pll_enable(intel_crtc);
4882 assert_fdi_tx_disabled(dev_priv, pipe);
4883 assert_fdi_rx_disabled(dev_priv, pipe);
4886 ironlake_pfit_enable(intel_crtc);
4889 * On ILK+ LUT must be loaded before the pipe is running but with
4892 intel_crtc_load_lut(crtc);
4894 intel_update_watermarks(crtc);
4895 intel_enable_pipe(intel_crtc);
4897 if (intel_crtc->config->has_pch_encoder)
4898 ironlake_pch_enable(crtc);
4900 assert_vblank_disabled(crtc);
4901 drm_crtc_vblank_on(crtc);
4903 for_each_encoder_on_crtc(dev, crtc, encoder)
4904 encoder->enable(encoder);
4906 if (HAS_PCH_CPT(dev))
4907 cpt_verify_modeset(dev, intel_crtc->pipe);
4910 /* IPS only exists on ULT machines and is tied to pipe A. */
4911 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4913 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
4916 static void haswell_crtc_enable(struct drm_crtc *crtc)
4918 struct drm_device *dev = crtc->dev;
4919 struct drm_i915_private *dev_priv = dev->dev_private;
4920 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4921 struct intel_encoder *encoder;
4922 int pipe = intel_crtc->pipe, hsw_workaround_pipe;
4923 struct intel_crtc_state *pipe_config =
4924 to_intel_crtc_state(crtc->state);
4926 if (WARN_ON(intel_crtc->active))
4929 if (intel_crtc_to_shared_dpll(intel_crtc))
4930 intel_enable_shared_dpll(intel_crtc);
4932 if (intel_crtc->config->has_dp_encoder)
4933 intel_dp_set_m_n(intel_crtc, M1_N1);
4935 intel_set_pipe_timings(intel_crtc);
4937 if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
4938 I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
4939 intel_crtc->config->pixel_multiplier - 1);
4942 if (intel_crtc->config->has_pch_encoder) {
4943 intel_cpu_transcoder_set_m_n(intel_crtc,
4944 &intel_crtc->config->fdi_m_n, NULL);
4947 haswell_set_pipeconf(crtc);
4949 intel_set_pipe_csc(crtc);
4951 intel_crtc->active = true;
4953 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4954 for_each_encoder_on_crtc(dev, crtc, encoder)
4955 if (encoder->pre_enable)
4956 encoder->pre_enable(encoder);
4958 if (intel_crtc->config->has_pch_encoder) {
4959 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4961 dev_priv->display.fdi_link_train(crtc);
4964 intel_ddi_enable_pipe_clock(intel_crtc);
4966 if (INTEL_INFO(dev)->gen == 9)
4967 skylake_pfit_enable(intel_crtc);
4968 else if (INTEL_INFO(dev)->gen < 9)
4969 ironlake_pfit_enable(intel_crtc);
4971 MISSING_CASE(INTEL_INFO(dev)->gen);
4974 * On ILK+ LUT must be loaded before the pipe is running but with
4977 intel_crtc_load_lut(crtc);
4979 intel_ddi_set_pipe_settings(crtc);
4980 intel_ddi_enable_transcoder_func(crtc);
4982 intel_update_watermarks(crtc);
4983 intel_enable_pipe(intel_crtc);
4985 if (intel_crtc->config->has_pch_encoder)
4986 lpt_pch_enable(crtc);
4988 if (intel_crtc->config->dp_encoder_is_mst)
4989 intel_ddi_set_vc_payload_alloc(crtc, true);
4991 assert_vblank_disabled(crtc);
4992 drm_crtc_vblank_on(crtc);
4994 for_each_encoder_on_crtc(dev, crtc, encoder) {
4995 encoder->enable(encoder);
4996 intel_opregion_notify_encoder(encoder, true);
4999 /* If we change the relative order between pipe/planes enabling, we need
5000 * to change the workaround. */
5001 hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
5002 if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) {
5003 intel_wait_for_vblank(dev, hsw_workaround_pipe);
5004 intel_wait_for_vblank(dev, hsw_workaround_pipe);
5008 static void ironlake_pfit_disable(struct intel_crtc *crtc)
5010 struct drm_device *dev = crtc->base.dev;
5011 struct drm_i915_private *dev_priv = dev->dev_private;
5012 int pipe = crtc->pipe;
5014 /* To avoid upsetting the power well on haswell only disable the pfit if
5015 * it's in use. The hw state code will make sure we get this right. */
5016 if (crtc->config->pch_pfit.enabled) {
5017 I915_WRITE(PF_CTL(pipe), 0);
5018 I915_WRITE(PF_WIN_POS(pipe), 0);
5019 I915_WRITE(PF_WIN_SZ(pipe), 0);
5023 static void ironlake_crtc_disable(struct drm_crtc *crtc)
5025 struct drm_device *dev = crtc->dev;
5026 struct drm_i915_private *dev_priv = dev->dev_private;
5027 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5028 struct intel_encoder *encoder;
5029 int pipe = intel_crtc->pipe;
5032 for_each_encoder_on_crtc(dev, crtc, encoder)
5033 encoder->disable(encoder);
5035 drm_crtc_vblank_off(crtc);
5036 assert_vblank_disabled(crtc);
5038 if (intel_crtc->config->has_pch_encoder)
5039 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
5041 intel_disable_pipe(intel_crtc);
5043 ironlake_pfit_disable(intel_crtc);
5045 if (intel_crtc->config->has_pch_encoder)
5046 ironlake_fdi_disable(crtc);
5048 for_each_encoder_on_crtc(dev, crtc, encoder)
5049 if (encoder->post_disable)
5050 encoder->post_disable(encoder);
5052 if (intel_crtc->config->has_pch_encoder) {
5053 ironlake_disable_pch_transcoder(dev_priv, pipe);
5055 if (HAS_PCH_CPT(dev)) {
5056 /* disable TRANS_DP_CTL */
5057 reg = TRANS_DP_CTL(pipe);
5058 temp = I915_READ(reg);
5059 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
5060 TRANS_DP_PORT_SEL_MASK);
5061 temp |= TRANS_DP_PORT_SEL_NONE;
5062 I915_WRITE(reg, temp);
5064 /* disable DPLL_SEL */
5065 temp = I915_READ(PCH_DPLL_SEL);
5066 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
5067 I915_WRITE(PCH_DPLL_SEL, temp);
5070 ironlake_fdi_pll_disable(intel_crtc);
5073 intel_crtc->active = false;
5074 intel_update_watermarks(crtc);
5077 static void haswell_crtc_disable(struct drm_crtc *crtc)
5079 struct drm_device *dev = crtc->dev;
5080 struct drm_i915_private *dev_priv = dev->dev_private;
5081 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5082 struct intel_encoder *encoder;
5083 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
5085 for_each_encoder_on_crtc(dev, crtc, encoder) {
5086 intel_opregion_notify_encoder(encoder, false);
5087 encoder->disable(encoder);
5090 drm_crtc_vblank_off(crtc);
5091 assert_vblank_disabled(crtc);
5093 if (intel_crtc->config->has_pch_encoder)
5094 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5096 intel_disable_pipe(intel_crtc);
5098 if (intel_crtc->config->dp_encoder_is_mst)
5099 intel_ddi_set_vc_payload_alloc(crtc, false);
5101 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
5103 if (INTEL_INFO(dev)->gen == 9)
5104 skylake_scaler_disable(intel_crtc);
5105 else if (INTEL_INFO(dev)->gen < 9)
5106 ironlake_pfit_disable(intel_crtc);
5108 MISSING_CASE(INTEL_INFO(dev)->gen);
5110 intel_ddi_disable_pipe_clock(intel_crtc);
5112 if (intel_crtc->config->has_pch_encoder) {
5113 lpt_disable_pch_transcoder(dev_priv);
5114 intel_ddi_fdi_disable(crtc);
5117 for_each_encoder_on_crtc(dev, crtc, encoder)
5118 if (encoder->post_disable)
5119 encoder->post_disable(encoder);
5121 intel_crtc->active = false;
5122 intel_update_watermarks(crtc);
5125 static void i9xx_pfit_enable(struct intel_crtc *crtc)
5127 struct drm_device *dev = crtc->base.dev;
5128 struct drm_i915_private *dev_priv = dev->dev_private;
5129 struct intel_crtc_state *pipe_config = crtc->config;
5131 if (!pipe_config->gmch_pfit.control)
5135 * The panel fitter should only be adjusted whilst the pipe is disabled,
5136 * according to register description and PRM.
5138 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
5139 assert_pipe_disabled(dev_priv, crtc->pipe);
5141 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
5142 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
5144 /* Border color in case we don't scale up to the full screen. Black by
5145 * default, change to something else for debugging. */
5146 I915_WRITE(BCLRPAT(crtc->pipe), 0);
5149 static enum intel_display_power_domain port_to_power_domain(enum port port)
5153 return POWER_DOMAIN_PORT_DDI_A_4_LANES;
5155 return POWER_DOMAIN_PORT_DDI_B_4_LANES;
5157 return POWER_DOMAIN_PORT_DDI_C_4_LANES;
5159 return POWER_DOMAIN_PORT_DDI_D_4_LANES;
5161 return POWER_DOMAIN_PORT_DDI_E_2_LANES;
5164 return POWER_DOMAIN_PORT_OTHER;
5168 #define for_each_power_domain(domain, mask) \
5169 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
5170 if ((1 << (domain)) & (mask))
5172 enum intel_display_power_domain
5173 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
5175 struct drm_device *dev = intel_encoder->base.dev;
5176 struct intel_digital_port *intel_dig_port;
5178 switch (intel_encoder->type) {
5179 case INTEL_OUTPUT_UNKNOWN:
5180 /* Only DDI platforms should ever use this output type */
5181 WARN_ON_ONCE(!HAS_DDI(dev));
5182 case INTEL_OUTPUT_DISPLAYPORT:
5183 case INTEL_OUTPUT_HDMI:
5184 case INTEL_OUTPUT_EDP:
5185 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
5186 return port_to_power_domain(intel_dig_port->port);
5187 case INTEL_OUTPUT_DP_MST:
5188 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5189 return port_to_power_domain(intel_dig_port->port);
5190 case INTEL_OUTPUT_ANALOG:
5191 return POWER_DOMAIN_PORT_CRT;
5192 case INTEL_OUTPUT_DSI:
5193 return POWER_DOMAIN_PORT_DSI;
5195 return POWER_DOMAIN_PORT_OTHER;
5199 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
5201 struct drm_device *dev = crtc->dev;
5202 struct intel_encoder *intel_encoder;
5203 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5204 enum pipe pipe = intel_crtc->pipe;
5206 enum transcoder transcoder;
5208 if (!crtc->state->active)
5211 transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
5213 mask = BIT(POWER_DOMAIN_PIPE(pipe));
5214 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
5215 if (intel_crtc->config->pch_pfit.enabled ||
5216 intel_crtc->config->pch_pfit.force_thru)
5217 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
5219 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
5220 mask |= BIT(intel_display_port_power_domain(intel_encoder));
5225 static unsigned long modeset_get_crtc_power_domains(struct drm_crtc *crtc)
5227 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
5228 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5229 enum intel_display_power_domain domain;
5230 unsigned long domains, new_domains, old_domains;
5232 old_domains = intel_crtc->enabled_power_domains;
5233 intel_crtc->enabled_power_domains = new_domains = get_crtc_power_domains(crtc);
5235 domains = new_domains & ~old_domains;
5237 for_each_power_domain(domain, domains)
5238 intel_display_power_get(dev_priv, domain);
5240 return old_domains & ~new_domains;
5243 static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
5244 unsigned long domains)
5246 enum intel_display_power_domain domain;
5248 for_each_power_domain(domain, domains)
5249 intel_display_power_put(dev_priv, domain);
5252 static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
5254 struct drm_device *dev = state->dev;
5255 struct drm_i915_private *dev_priv = dev->dev_private;
5256 unsigned long put_domains[I915_MAX_PIPES] = {};
5257 struct drm_crtc_state *crtc_state;
5258 struct drm_crtc *crtc;
5261 for_each_crtc_in_state(state, crtc, crtc_state, i) {
5262 if (needs_modeset(crtc->state))
5263 put_domains[to_intel_crtc(crtc)->pipe] =
5264 modeset_get_crtc_power_domains(crtc);
5267 if (dev_priv->display.modeset_commit_cdclk) {
5268 unsigned int cdclk = to_intel_atomic_state(state)->cdclk;
5270 if (cdclk != dev_priv->cdclk_freq &&
5271 !WARN_ON(!state->allow_modeset))
5272 dev_priv->display.modeset_commit_cdclk(state);
5275 for (i = 0; i < I915_MAX_PIPES; i++)
5277 modeset_put_power_domains(dev_priv, put_domains[i]);
5280 static void intel_update_max_cdclk(struct drm_device *dev)
5282 struct drm_i915_private *dev_priv = dev->dev_private;
5284 if (IS_SKYLAKE(dev)) {
5285 u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
5287 if (limit == SKL_DFSM_CDCLK_LIMIT_675)
5288 dev_priv->max_cdclk_freq = 675000;
5289 else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
5290 dev_priv->max_cdclk_freq = 540000;
5291 else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
5292 dev_priv->max_cdclk_freq = 450000;
5294 dev_priv->max_cdclk_freq = 337500;
5295 } else if (IS_BROADWELL(dev)) {
5297 * FIXME with extra cooling we can allow
5298 * 540 MHz for ULX and 675 Mhz for ULT.
5299 * How can we know if extra cooling is
5300 * available? PCI ID, VTB, something else?
5302 if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
5303 dev_priv->max_cdclk_freq = 450000;
5304 else if (IS_BDW_ULX(dev))
5305 dev_priv->max_cdclk_freq = 450000;
5306 else if (IS_BDW_ULT(dev))
5307 dev_priv->max_cdclk_freq = 540000;
5309 dev_priv->max_cdclk_freq = 675000;
5310 } else if (IS_CHERRYVIEW(dev)) {
5311 dev_priv->max_cdclk_freq = 320000;
5312 } else if (IS_VALLEYVIEW(dev)) {
5313 dev_priv->max_cdclk_freq = 400000;
5315 /* otherwise assume cdclk is fixed */
5316 dev_priv->max_cdclk_freq = dev_priv->cdclk_freq;
5319 DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n",
5320 dev_priv->max_cdclk_freq);
5323 static void intel_update_cdclk(struct drm_device *dev)
5325 struct drm_i915_private *dev_priv = dev->dev_private;
5327 dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
5328 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
5329 dev_priv->cdclk_freq);
5332 * Program the gmbus_freq based on the cdclk frequency.
5333 * BSpec erroneously claims we should aim for 4MHz, but
5334 * in fact 1MHz is the correct frequency.
5336 if (IS_VALLEYVIEW(dev)) {
5338 * Program the gmbus_freq based on the cdclk frequency.
5339 * BSpec erroneously claims we should aim for 4MHz, but
5340 * in fact 1MHz is the correct frequency.
5342 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
5345 if (dev_priv->max_cdclk_freq == 0)
5346 intel_update_max_cdclk(dev);
5349 static void broxton_set_cdclk(struct drm_device *dev, int frequency)
5351 struct drm_i915_private *dev_priv = dev->dev_private;
5354 uint32_t current_freq;
5357 /* frequency = 19.2MHz * ratio / 2 / div{1,1.5,2,4} */
5358 switch (frequency) {
5360 divider = BXT_CDCLK_CD2X_DIV_SEL_4;
5361 ratio = BXT_DE_PLL_RATIO(60);
5364 divider = BXT_CDCLK_CD2X_DIV_SEL_2;
5365 ratio = BXT_DE_PLL_RATIO(60);
5368 divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
5369 ratio = BXT_DE_PLL_RATIO(60);
5372 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5373 ratio = BXT_DE_PLL_RATIO(60);
5376 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5377 ratio = BXT_DE_PLL_RATIO(65);
5381 * Bypass frequency with DE PLL disabled. Init ratio, divider
5382 * to suppress GCC warning.
5388 DRM_ERROR("unsupported CDCLK freq %d", frequency);
5393 mutex_lock(&dev_priv->rps.hw_lock);
5394 /* Inform power controller of upcoming frequency change */
5395 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5397 mutex_unlock(&dev_priv->rps.hw_lock);
5400 DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
5405 current_freq = I915_READ(CDCLK_CTL) & CDCLK_FREQ_DECIMAL_MASK;
5406 /* convert from .1 fixpoint MHz with -1MHz offset to kHz */
5407 current_freq = current_freq * 500 + 1000;
5410 * DE PLL has to be disabled when
5411 * - setting to 19.2MHz (bypass, PLL isn't used)
5412 * - before setting to 624MHz (PLL needs toggling)
5413 * - before setting to any frequency from 624MHz (PLL needs toggling)
5415 if (frequency == 19200 || frequency == 624000 ||
5416 current_freq == 624000) {
5417 I915_WRITE(BXT_DE_PLL_ENABLE, ~BXT_DE_PLL_PLL_ENABLE);
5419 if (wait_for(!(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK),
5421 DRM_ERROR("timout waiting for DE PLL unlock\n");
5424 if (frequency != 19200) {
5427 val = I915_READ(BXT_DE_PLL_CTL);
5428 val &= ~BXT_DE_PLL_RATIO_MASK;
5430 I915_WRITE(BXT_DE_PLL_CTL, val);
5432 I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
5434 if (wait_for(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK, 1))
5435 DRM_ERROR("timeout waiting for DE PLL lock\n");
5437 val = I915_READ(CDCLK_CTL);
5438 val &= ~BXT_CDCLK_CD2X_DIV_SEL_MASK;
5441 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5444 val &= ~BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5445 if (frequency >= 500000)
5446 val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5448 val &= ~CDCLK_FREQ_DECIMAL_MASK;
5449 /* convert from kHz to .1 fixpoint MHz with -1MHz offset */
5450 val |= (frequency - 1000) / 500;
5451 I915_WRITE(CDCLK_CTL, val);
5454 mutex_lock(&dev_priv->rps.hw_lock);
5455 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5456 DIV_ROUND_UP(frequency, 25000));
5457 mutex_unlock(&dev_priv->rps.hw_lock);
5460 DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
5465 intel_update_cdclk(dev);
5468 void broxton_init_cdclk(struct drm_device *dev)
5470 struct drm_i915_private *dev_priv = dev->dev_private;
5474 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
5475 * or else the reset will hang because there is no PCH to respond.
5476 * Move the handshake programming to initialization sequence.
5477 * Previously was left up to BIOS.
5479 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5480 val &= ~RESET_PCH_HANDSHAKE_ENABLE;
5481 I915_WRITE(HSW_NDE_RSTWRN_OPT, val);
5483 /* Enable PG1 for cdclk */
5484 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5486 /* check if cd clock is enabled */
5487 if (I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_PLL_ENABLE) {
5488 DRM_DEBUG_KMS("Display already initialized\n");
5494 * - The initial CDCLK needs to be read from VBT.
5495 * Need to make this change after VBT has changes for BXT.
5496 * - check if setting the max (or any) cdclk freq is really necessary
5497 * here, it belongs to modeset time
5499 broxton_set_cdclk(dev, 624000);
5501 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5502 POSTING_READ(DBUF_CTL);
5506 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5507 DRM_ERROR("DBuf power enable timeout!\n");
5510 void broxton_uninit_cdclk(struct drm_device *dev)
5512 struct drm_i915_private *dev_priv = dev->dev_private;
5514 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5515 POSTING_READ(DBUF_CTL);
5519 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5520 DRM_ERROR("DBuf power disable timeout!\n");
5522 /* Set minimum (bypass) frequency, in effect turning off the DE PLL */
5523 broxton_set_cdclk(dev, 19200);
5525 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5528 static const struct skl_cdclk_entry {
5531 } skl_cdclk_frequencies[] = {
5532 { .freq = 308570, .vco = 8640 },
5533 { .freq = 337500, .vco = 8100 },
5534 { .freq = 432000, .vco = 8640 },
5535 { .freq = 450000, .vco = 8100 },
5536 { .freq = 540000, .vco = 8100 },
5537 { .freq = 617140, .vco = 8640 },
5538 { .freq = 675000, .vco = 8100 },
5541 static unsigned int skl_cdclk_decimal(unsigned int freq)
5543 return (freq - 1000) / 500;
5546 static unsigned int skl_cdclk_get_vco(unsigned int freq)
5550 for (i = 0; i < ARRAY_SIZE(skl_cdclk_frequencies); i++) {
5551 const struct skl_cdclk_entry *e = &skl_cdclk_frequencies[i];
5553 if (e->freq == freq)
5561 skl_dpll0_enable(struct drm_i915_private *dev_priv, unsigned int required_vco)
5563 unsigned int min_freq;
5566 /* select the minimum CDCLK before enabling DPLL 0 */
5567 val = I915_READ(CDCLK_CTL);
5568 val &= ~CDCLK_FREQ_SEL_MASK | ~CDCLK_FREQ_DECIMAL_MASK;
5569 val |= CDCLK_FREQ_337_308;
5571 if (required_vco == 8640)
5576 val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_freq);
5578 I915_WRITE(CDCLK_CTL, val);
5579 POSTING_READ(CDCLK_CTL);
5582 * We always enable DPLL0 with the lowest link rate possible, but still
5583 * taking into account the VCO required to operate the eDP panel at the
5584 * desired frequency. The usual DP link rates operate with a VCO of
5585 * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
5586 * The modeset code is responsible for the selection of the exact link
5587 * rate later on, with the constraint of choosing a frequency that
5588 * works with required_vco.
5590 val = I915_READ(DPLL_CTRL1);
5592 val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) |
5593 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
5594 val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0);
5595 if (required_vco == 8640)
5596 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080,
5599 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810,
5602 I915_WRITE(DPLL_CTRL1, val);
5603 POSTING_READ(DPLL_CTRL1);
5605 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
5607 if (wait_for(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK, 5))
5608 DRM_ERROR("DPLL0 not locked\n");
5611 static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
5616 /* inform PCU we want to change CDCLK */
5617 val = SKL_CDCLK_PREPARE_FOR_CHANGE;
5618 mutex_lock(&dev_priv->rps.hw_lock);
5619 ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val);
5620 mutex_unlock(&dev_priv->rps.hw_lock);
5622 return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE);
5625 static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
5629 for (i = 0; i < 15; i++) {
5630 if (skl_cdclk_pcu_ready(dev_priv))
5638 static void skl_set_cdclk(struct drm_i915_private *dev_priv, unsigned int freq)
5640 struct drm_device *dev = dev_priv->dev;
5641 u32 freq_select, pcu_ack;
5643 DRM_DEBUG_DRIVER("Changing CDCLK to %dKHz\n", freq);
5645 if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) {
5646 DRM_ERROR("failed to inform PCU about cdclk change\n");
5654 freq_select = CDCLK_FREQ_450_432;
5658 freq_select = CDCLK_FREQ_540;
5664 freq_select = CDCLK_FREQ_337_308;
5669 freq_select = CDCLK_FREQ_675_617;
5674 I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(freq));
5675 POSTING_READ(CDCLK_CTL);
5677 /* inform PCU of the change */
5678 mutex_lock(&dev_priv->rps.hw_lock);
5679 sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
5680 mutex_unlock(&dev_priv->rps.hw_lock);
5682 intel_update_cdclk(dev);
5685 void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
5687 /* disable DBUF power */
5688 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5689 POSTING_READ(DBUF_CTL);
5693 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5694 DRM_ERROR("DBuf power disable timeout\n");
5697 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE);
5698 if (wait_for(!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK), 1))
5699 DRM_ERROR("Couldn't disable DPLL0\n");
5701 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5704 void skl_init_cdclk(struct drm_i915_private *dev_priv)
5707 unsigned int required_vco;
5709 /* enable PCH reset handshake */
5710 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5711 I915_WRITE(HSW_NDE_RSTWRN_OPT, val | RESET_PCH_HANDSHAKE_ENABLE);
5713 /* enable PG1 and Misc I/O */
5714 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5716 /* DPLL0 not enabled (happens on early BIOS versions) */
5717 if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) {
5719 required_vco = skl_cdclk_get_vco(dev_priv->skl_boot_cdclk);
5720 skl_dpll0_enable(dev_priv, required_vco);
5723 /* set CDCLK to the frequency the BIOS chose */
5724 skl_set_cdclk(dev_priv, dev_priv->skl_boot_cdclk);
5726 /* enable DBUF power */
5727 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5728 POSTING_READ(DBUF_CTL);
5732 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5733 DRM_ERROR("DBuf power enable timeout\n");
5736 /* returns HPLL frequency in kHz */
5737 static int valleyview_get_vco(struct drm_i915_private *dev_priv)
5739 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
5741 /* Obtain SKU information */
5742 mutex_lock(&dev_priv->sb_lock);
5743 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
5744 CCK_FUSE_HPLL_FREQ_MASK;
5745 mutex_unlock(&dev_priv->sb_lock);
5747 return vco_freq[hpll_freq] * 1000;
5750 /* Adjust CDclk dividers to allow high res or save power if possible */
5751 static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
5753 struct drm_i915_private *dev_priv = dev->dev_private;
5756 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5757 != dev_priv->cdclk_freq);
5759 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
5761 else if (cdclk == 266667)
5766 mutex_lock(&dev_priv->rps.hw_lock);
5767 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5768 val &= ~DSPFREQGUAR_MASK;
5769 val |= (cmd << DSPFREQGUAR_SHIFT);
5770 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5771 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5772 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
5774 DRM_ERROR("timed out waiting for CDclk change\n");
5776 mutex_unlock(&dev_priv->rps.hw_lock);
5778 mutex_lock(&dev_priv->sb_lock);
5780 if (cdclk == 400000) {
5783 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5785 /* adjust cdclk divider */
5786 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
5787 val &= ~DISPLAY_FREQUENCY_VALUES;
5789 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
5791 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
5792 DISPLAY_FREQUENCY_STATUS) == (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
5794 DRM_ERROR("timed out waiting for CDclk change\n");
5797 /* adjust self-refresh exit latency value */
5798 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
5802 * For high bandwidth configs, we set a higher latency in the bunit
5803 * so that the core display fetch happens in time to avoid underruns.
5805 if (cdclk == 400000)
5806 val |= 4500 / 250; /* 4.5 usec */
5808 val |= 3000 / 250; /* 3.0 usec */
5809 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
5811 mutex_unlock(&dev_priv->sb_lock);
5813 intel_update_cdclk(dev);
5816 static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
5818 struct drm_i915_private *dev_priv = dev->dev_private;
5821 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5822 != dev_priv->cdclk_freq);
5831 MISSING_CASE(cdclk);
5836 * Specs are full of misinformation, but testing on actual
5837 * hardware has shown that we just need to write the desired
5838 * CCK divider into the Punit register.
5840 cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5842 mutex_lock(&dev_priv->rps.hw_lock);
5843 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5844 val &= ~DSPFREQGUAR_MASK_CHV;
5845 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
5846 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5847 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5848 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
5850 DRM_ERROR("timed out waiting for CDclk change\n");
5852 mutex_unlock(&dev_priv->rps.hw_lock);
5854 intel_update_cdclk(dev);
5857 static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5860 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
5861 int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
5864 * Really only a few cases to deal with, as only 4 CDclks are supported:
5867 * 320/333MHz (depends on HPLL freq)
5869 * So we check to see whether we're above 90% (VLV) or 95% (CHV)
5870 * of the lower bin and adjust if needed.
5872 * We seem to get an unstable or solid color picture at 200MHz.
5873 * Not sure what's wrong. For now use 200MHz only when all pipes
5876 if (!IS_CHERRYVIEW(dev_priv) &&
5877 max_pixclk > freq_320*limit/100)
5879 else if (max_pixclk > 266667*limit/100)
5881 else if (max_pixclk > 0)
5887 static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
5892 * - remove the guardband, it's not needed on BXT
5893 * - set 19.2MHz bypass frequency if there are no active pipes
5895 if (max_pixclk > 576000*9/10)
5897 else if (max_pixclk > 384000*9/10)
5899 else if (max_pixclk > 288000*9/10)
5901 else if (max_pixclk > 144000*9/10)
5907 /* Compute the max pixel clock for new configuration. Uses atomic state if
5908 * that's non-NULL, look at current state otherwise. */
5909 static int intel_mode_max_pixclk(struct drm_device *dev,
5910 struct drm_atomic_state *state)
5912 struct intel_crtc *intel_crtc;
5913 struct intel_crtc_state *crtc_state;
5916 for_each_intel_crtc(dev, intel_crtc) {
5917 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
5918 if (IS_ERR(crtc_state))
5919 return PTR_ERR(crtc_state);
5921 if (!crtc_state->base.enable)
5924 max_pixclk = max(max_pixclk,
5925 crtc_state->base.adjusted_mode.crtc_clock);
5931 static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
5933 struct drm_device *dev = state->dev;
5934 struct drm_i915_private *dev_priv = dev->dev_private;
5935 int max_pixclk = intel_mode_max_pixclk(dev, state);
5940 to_intel_atomic_state(state)->cdclk =
5941 valleyview_calc_cdclk(dev_priv, max_pixclk);
5946 static int broxton_modeset_calc_cdclk(struct drm_atomic_state *state)
5948 struct drm_device *dev = state->dev;
5949 struct drm_i915_private *dev_priv = dev->dev_private;
5950 int max_pixclk = intel_mode_max_pixclk(dev, state);
5955 to_intel_atomic_state(state)->cdclk =
5956 broxton_calc_cdclk(dev_priv, max_pixclk);
5961 static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
5963 unsigned int credits, default_credits;
5965 if (IS_CHERRYVIEW(dev_priv))
5966 default_credits = PFI_CREDIT(12);
5968 default_credits = PFI_CREDIT(8);
5970 if (DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 1000) >= dev_priv->rps.cz_freq) {
5971 /* CHV suggested value is 31 or 63 */
5972 if (IS_CHERRYVIEW(dev_priv))
5973 credits = PFI_CREDIT_63;
5975 credits = PFI_CREDIT(15);
5977 credits = default_credits;
5981 * WA - write default credits before re-programming
5982 * FIXME: should we also set the resend bit here?
5984 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5987 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5988 credits | PFI_CREDIT_RESEND);
5991 * FIXME is this guaranteed to clear
5992 * immediately or should we poll for it?
5994 WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
5997 static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state)
5999 struct drm_device *dev = old_state->dev;
6000 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
6001 struct drm_i915_private *dev_priv = dev->dev_private;
6004 * FIXME: We can end up here with all power domains off, yet
6005 * with a CDCLK frequency other than the minimum. To account
6006 * for this take the PIPE-A power domain, which covers the HW
6007 * blocks needed for the following programming. This can be
6008 * removed once it's guaranteed that we get here either with
6009 * the minimum CDCLK set, or the required power domains
6012 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
6014 if (IS_CHERRYVIEW(dev))
6015 cherryview_set_cdclk(dev, req_cdclk);
6017 valleyview_set_cdclk(dev, req_cdclk);
6019 vlv_program_pfi_credits(dev_priv);
6021 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
6024 static void valleyview_crtc_enable(struct drm_crtc *crtc)
6026 struct drm_device *dev = crtc->dev;
6027 struct drm_i915_private *dev_priv = to_i915(dev);
6028 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6029 struct intel_encoder *encoder;
6030 int pipe = intel_crtc->pipe;
6033 if (WARN_ON(intel_crtc->active))
6036 is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
6039 if (IS_CHERRYVIEW(dev))
6040 chv_prepare_pll(intel_crtc, intel_crtc->config);
6042 vlv_prepare_pll(intel_crtc, intel_crtc->config);
6045 if (intel_crtc->config->has_dp_encoder)
6046 intel_dp_set_m_n(intel_crtc, M1_N1);
6048 intel_set_pipe_timings(intel_crtc);
6050 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
6051 struct drm_i915_private *dev_priv = dev->dev_private;
6053 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
6054 I915_WRITE(CHV_CANVAS(pipe), 0);
6057 i9xx_set_pipeconf(intel_crtc);
6059 intel_crtc->active = true;
6061 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6063 for_each_encoder_on_crtc(dev, crtc, encoder)
6064 if (encoder->pre_pll_enable)
6065 encoder->pre_pll_enable(encoder);
6068 if (IS_CHERRYVIEW(dev))
6069 chv_enable_pll(intel_crtc, intel_crtc->config);
6071 vlv_enable_pll(intel_crtc, intel_crtc->config);
6074 for_each_encoder_on_crtc(dev, crtc, encoder)
6075 if (encoder->pre_enable)
6076 encoder->pre_enable(encoder);
6078 i9xx_pfit_enable(intel_crtc);
6080 intel_crtc_load_lut(crtc);
6082 intel_enable_pipe(intel_crtc);
6084 assert_vblank_disabled(crtc);
6085 drm_crtc_vblank_on(crtc);
6087 for_each_encoder_on_crtc(dev, crtc, encoder)
6088 encoder->enable(encoder);
6091 static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
6093 struct drm_device *dev = crtc->base.dev;
6094 struct drm_i915_private *dev_priv = dev->dev_private;
6096 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
6097 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
6100 static void i9xx_crtc_enable(struct drm_crtc *crtc)
6102 struct drm_device *dev = crtc->dev;
6103 struct drm_i915_private *dev_priv = to_i915(dev);
6104 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6105 struct intel_encoder *encoder;
6106 int pipe = intel_crtc->pipe;
6108 if (WARN_ON(intel_crtc->active))
6111 i9xx_set_pll_dividers(intel_crtc);
6113 if (intel_crtc->config->has_dp_encoder)
6114 intel_dp_set_m_n(intel_crtc, M1_N1);
6116 intel_set_pipe_timings(intel_crtc);
6118 i9xx_set_pipeconf(intel_crtc);
6120 intel_crtc->active = true;
6123 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6125 for_each_encoder_on_crtc(dev, crtc, encoder)
6126 if (encoder->pre_enable)
6127 encoder->pre_enable(encoder);
6129 i9xx_enable_pll(intel_crtc);
6131 i9xx_pfit_enable(intel_crtc);
6133 intel_crtc_load_lut(crtc);
6135 intel_update_watermarks(crtc);
6136 intel_enable_pipe(intel_crtc);
6138 assert_vblank_disabled(crtc);
6139 drm_crtc_vblank_on(crtc);
6141 for_each_encoder_on_crtc(dev, crtc, encoder)
6142 encoder->enable(encoder);
6145 static void i9xx_pfit_disable(struct intel_crtc *crtc)
6147 struct drm_device *dev = crtc->base.dev;
6148 struct drm_i915_private *dev_priv = dev->dev_private;
6150 if (!crtc->config->gmch_pfit.control)
6153 assert_pipe_disabled(dev_priv, crtc->pipe);
6155 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
6156 I915_READ(PFIT_CONTROL));
6157 I915_WRITE(PFIT_CONTROL, 0);
6160 static void i9xx_crtc_disable(struct drm_crtc *crtc)
6162 struct drm_device *dev = crtc->dev;
6163 struct drm_i915_private *dev_priv = dev->dev_private;
6164 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6165 struct intel_encoder *encoder;
6166 int pipe = intel_crtc->pipe;
6169 * On gen2 planes are double buffered but the pipe isn't, so we must
6170 * wait for planes to fully turn off before disabling the pipe.
6171 * We also need to wait on all gmch platforms because of the
6172 * self-refresh mode constraint explained above.
6174 intel_wait_for_vblank(dev, pipe);
6176 for_each_encoder_on_crtc(dev, crtc, encoder)
6177 encoder->disable(encoder);
6179 drm_crtc_vblank_off(crtc);
6180 assert_vblank_disabled(crtc);
6182 intel_disable_pipe(intel_crtc);
6184 i9xx_pfit_disable(intel_crtc);
6186 for_each_encoder_on_crtc(dev, crtc, encoder)
6187 if (encoder->post_disable)
6188 encoder->post_disable(encoder);
6190 if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
6191 if (IS_CHERRYVIEW(dev))
6192 chv_disable_pll(dev_priv, pipe);
6193 else if (IS_VALLEYVIEW(dev))
6194 vlv_disable_pll(dev_priv, pipe);
6196 i9xx_disable_pll(intel_crtc);
6200 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6202 intel_crtc->active = false;
6203 intel_update_watermarks(crtc);
6206 static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
6208 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6209 struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6210 enum intel_display_power_domain domain;
6211 unsigned long domains;
6213 if (!intel_crtc->active)
6216 if (to_intel_plane_state(crtc->primary->state)->visible) {
6217 intel_crtc_wait_for_pending_flips(crtc);
6218 intel_pre_disable_primary(crtc);
6221 intel_crtc_disable_planes(crtc, crtc->state->plane_mask);
6222 dev_priv->display.crtc_disable(crtc);
6223 intel_disable_shared_dpll(intel_crtc);
6225 domains = intel_crtc->enabled_power_domains;
6226 for_each_power_domain(domain, domains)
6227 intel_display_power_put(dev_priv, domain);
6228 intel_crtc->enabled_power_domains = 0;
6232 * turn all crtc's off, but do not adjust state
6233 * This has to be paired with a call to intel_modeset_setup_hw_state.
6235 int intel_display_suspend(struct drm_device *dev)
6237 struct drm_mode_config *config = &dev->mode_config;
6238 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
6239 struct drm_atomic_state *state;
6240 struct drm_crtc *crtc;
6241 unsigned crtc_mask = 0;
6247 lockdep_assert_held(&ctx->ww_ctx);
6248 state = drm_atomic_state_alloc(dev);
6249 if (WARN_ON(!state))
6252 state->acquire_ctx = ctx;
6253 state->allow_modeset = true;
6255 for_each_crtc(dev, crtc) {
6256 struct drm_crtc_state *crtc_state =
6257 drm_atomic_get_crtc_state(state, crtc);
6259 ret = PTR_ERR_OR_ZERO(crtc_state);
6263 if (!crtc_state->active)
6266 crtc_state->active = false;
6267 crtc_mask |= 1 << drm_crtc_index(crtc);
6271 ret = drm_atomic_commit(state);
6274 for_each_crtc(dev, crtc)
6275 if (crtc_mask & (1 << drm_crtc_index(crtc)))
6276 crtc->state->active = true;
6284 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
6285 drm_atomic_state_free(state);
6289 void intel_encoder_destroy(struct drm_encoder *encoder)
6291 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6293 drm_encoder_cleanup(encoder);
6294 kfree(intel_encoder);
6297 /* Cross check the actual hw state with our own modeset state tracking (and it's
6298 * internal consistency). */
6299 static void intel_connector_check_state(struct intel_connector *connector)
6301 struct drm_crtc *crtc = connector->base.state->crtc;
6303 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6304 connector->base.base.id,
6305 connector->base.name);
6307 if (connector->get_hw_state(connector)) {
6308 struct intel_encoder *encoder = connector->encoder;
6309 struct drm_connector_state *conn_state = connector->base.state;
6311 I915_STATE_WARN(!crtc,
6312 "connector enabled without attached crtc\n");
6317 I915_STATE_WARN(!crtc->state->active,
6318 "connector is active, but attached crtc isn't\n");
6320 if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
6323 I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
6324 "atomic encoder doesn't match attached encoder\n");
6326 I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
6327 "attached encoder crtc differs from connector crtc\n");
6329 I915_STATE_WARN(crtc && crtc->state->active,
6330 "attached crtc is active, but connector isn't\n");
6331 I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
6332 "best encoder set without crtc!\n");
6336 int intel_connector_init(struct intel_connector *connector)
6338 struct drm_connector_state *connector_state;
6340 connector_state = kzalloc(sizeof *connector_state, GFP_KERNEL);
6341 if (!connector_state)
6344 connector->base.state = connector_state;
6348 struct intel_connector *intel_connector_alloc(void)
6350 struct intel_connector *connector;
6352 connector = kzalloc(sizeof *connector, GFP_KERNEL);
6356 if (intel_connector_init(connector) < 0) {
6364 /* Simple connector->get_hw_state implementation for encoders that support only
6365 * one connector and no cloning and hence the encoder state determines the state
6366 * of the connector. */
6367 bool intel_connector_get_hw_state(struct intel_connector *connector)
6370 struct intel_encoder *encoder = connector->encoder;
6372 return encoder->get_hw_state(encoder, &pipe);
6375 static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
6377 if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6378 return crtc_state->fdi_lanes;
6383 static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
6384 struct intel_crtc_state *pipe_config)
6386 struct drm_atomic_state *state = pipe_config->base.state;
6387 struct intel_crtc *other_crtc;
6388 struct intel_crtc_state *other_crtc_state;
6390 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6391 pipe_name(pipe), pipe_config->fdi_lanes);
6392 if (pipe_config->fdi_lanes > 4) {
6393 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6394 pipe_name(pipe), pipe_config->fdi_lanes);
6398 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
6399 if (pipe_config->fdi_lanes > 2) {
6400 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6401 pipe_config->fdi_lanes);
6408 if (INTEL_INFO(dev)->num_pipes == 2)
6411 /* Ivybridge 3 pipe is really complicated */
6416 if (pipe_config->fdi_lanes <= 2)
6419 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
6421 intel_atomic_get_crtc_state(state, other_crtc);
6422 if (IS_ERR(other_crtc_state))
6423 return PTR_ERR(other_crtc_state);
6425 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
6426 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6427 pipe_name(pipe), pipe_config->fdi_lanes);
6432 if (pipe_config->fdi_lanes > 2) {
6433 DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6434 pipe_name(pipe), pipe_config->fdi_lanes);
6438 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
6440 intel_atomic_get_crtc_state(state, other_crtc);
6441 if (IS_ERR(other_crtc_state))
6442 return PTR_ERR(other_crtc_state);
6444 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
6445 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6455 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
6456 struct intel_crtc_state *pipe_config)
6458 struct drm_device *dev = intel_crtc->base.dev;
6459 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6460 int lane, link_bw, fdi_dotclock, ret;
6461 bool needs_recompute = false;
6464 /* FDI is a binary signal running at ~2.7GHz, encoding
6465 * each output octet as 10 bits. The actual frequency
6466 * is stored as a divider into a 100MHz clock, and the
6467 * mode pixel clock is stored in units of 1KHz.
6468 * Hence the bw of each lane in terms of the mode signal
6471 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
6473 fdi_dotclock = adjusted_mode->crtc_clock;
6475 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
6476 pipe_config->pipe_bpp);
6478 pipe_config->fdi_lanes = lane;
6480 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
6481 link_bw, &pipe_config->fdi_m_n);
6483 ret = ironlake_check_fdi_lanes(intel_crtc->base.dev,
6484 intel_crtc->pipe, pipe_config);
6485 if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
6486 pipe_config->pipe_bpp -= 2*3;
6487 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6488 pipe_config->pipe_bpp);
6489 needs_recompute = true;
6490 pipe_config->bw_constrained = true;
6495 if (needs_recompute)
6501 static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv,
6502 struct intel_crtc_state *pipe_config)
6504 if (pipe_config->pipe_bpp > 24)
6507 /* HSW can handle pixel rate up to cdclk? */
6508 if (IS_HASWELL(dev_priv->dev))
6512 * We compare against max which means we must take
6513 * the increased cdclk requirement into account when
6514 * calculating the new cdclk.
6516 * Should measure whether using a lower cdclk w/o IPS
6518 return ilk_pipe_pixel_rate(pipe_config) <=
6519 dev_priv->max_cdclk_freq * 95 / 100;
6522 static void hsw_compute_ips_config(struct intel_crtc *crtc,
6523 struct intel_crtc_state *pipe_config)
6525 struct drm_device *dev = crtc->base.dev;
6526 struct drm_i915_private *dev_priv = dev->dev_private;
6528 pipe_config->ips_enabled = i915.enable_ips &&
6529 hsw_crtc_supports_ips(crtc) &&
6530 pipe_config_supports_ips(dev_priv, pipe_config);
6533 static int intel_crtc_compute_config(struct intel_crtc *crtc,
6534 struct intel_crtc_state *pipe_config)
6536 struct drm_device *dev = crtc->base.dev;
6537 struct drm_i915_private *dev_priv = dev->dev_private;
6538 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6540 /* FIXME should check pixel clock limits on all platforms */
6541 if (INTEL_INFO(dev)->gen < 4) {
6542 int clock_limit = dev_priv->max_cdclk_freq;
6545 * Enable pixel doubling when the dot clock
6546 * is > 90% of the (display) core speed.
6548 * GDG double wide on either pipe,
6549 * otherwise pipe A only.
6551 if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
6552 adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
6554 pipe_config->double_wide = true;
6557 if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
6562 * Pipe horizontal size must be even in:
6564 * - LVDS dual channel mode
6565 * - Double wide pipe
6567 if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
6568 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
6569 pipe_config->pipe_src_w &= ~1;
6571 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
6572 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
6574 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
6575 adjusted_mode->hsync_start == adjusted_mode->hdisplay)
6579 hsw_compute_ips_config(crtc, pipe_config);
6581 if (pipe_config->has_pch_encoder)
6582 return ironlake_fdi_compute_config(crtc, pipe_config);
6587 static int skylake_get_display_clock_speed(struct drm_device *dev)
6589 struct drm_i915_private *dev_priv = to_i915(dev);
6590 uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
6591 uint32_t cdctl = I915_READ(CDCLK_CTL);
6594 if (!(lcpll1 & LCPLL_PLL_ENABLE))
6595 return 24000; /* 24MHz is the cd freq with NSSC ref */
6597 if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
6600 linkrate = (I915_READ(DPLL_CTRL1) &
6601 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
6603 if (linkrate == DPLL_CTRL1_LINK_RATE_2160 ||
6604 linkrate == DPLL_CTRL1_LINK_RATE_1080) {
6606 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6607 case CDCLK_FREQ_450_432:
6609 case CDCLK_FREQ_337_308:
6611 case CDCLK_FREQ_675_617:
6614 WARN(1, "Unknown cd freq selection\n");
6618 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6619 case CDCLK_FREQ_450_432:
6621 case CDCLK_FREQ_337_308:
6623 case CDCLK_FREQ_675_617:
6626 WARN(1, "Unknown cd freq selection\n");
6630 /* error case, do as if DPLL0 isn't enabled */
6634 static int broxton_get_display_clock_speed(struct drm_device *dev)
6636 struct drm_i915_private *dev_priv = to_i915(dev);
6637 uint32_t cdctl = I915_READ(CDCLK_CTL);
6638 uint32_t pll_ratio = I915_READ(BXT_DE_PLL_CTL) & BXT_DE_PLL_RATIO_MASK;
6639 uint32_t pll_enab = I915_READ(BXT_DE_PLL_ENABLE);
6642 if (!(pll_enab & BXT_DE_PLL_PLL_ENABLE))
6645 cdclk = 19200 * pll_ratio / 2;
6647 switch (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) {
6648 case BXT_CDCLK_CD2X_DIV_SEL_1:
6649 return cdclk; /* 576MHz or 624MHz */
6650 case BXT_CDCLK_CD2X_DIV_SEL_1_5:
6651 return cdclk * 2 / 3; /* 384MHz */
6652 case BXT_CDCLK_CD2X_DIV_SEL_2:
6653 return cdclk / 2; /* 288MHz */
6654 case BXT_CDCLK_CD2X_DIV_SEL_4:
6655 return cdclk / 4; /* 144MHz */
6658 /* error case, do as if DE PLL isn't enabled */
6662 static int broadwell_get_display_clock_speed(struct drm_device *dev)
6664 struct drm_i915_private *dev_priv = dev->dev_private;
6665 uint32_t lcpll = I915_READ(LCPLL_CTL);
6666 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6668 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6670 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6672 else if (freq == LCPLL_CLK_FREQ_450)
6674 else if (freq == LCPLL_CLK_FREQ_54O_BDW)
6676 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
6682 static int haswell_get_display_clock_speed(struct drm_device *dev)
6684 struct drm_i915_private *dev_priv = dev->dev_private;
6685 uint32_t lcpll = I915_READ(LCPLL_CTL);
6686 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6688 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6690 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6692 else if (freq == LCPLL_CLK_FREQ_450)
6694 else if (IS_HSW_ULT(dev))
6700 static int valleyview_get_display_clock_speed(struct drm_device *dev)
6702 struct drm_i915_private *dev_priv = dev->dev_private;
6706 if (dev_priv->hpll_freq == 0)
6707 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
6709 mutex_lock(&dev_priv->sb_lock);
6710 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
6711 mutex_unlock(&dev_priv->sb_lock);
6713 divider = val & DISPLAY_FREQUENCY_VALUES;
6715 WARN((val & DISPLAY_FREQUENCY_STATUS) !=
6716 (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
6717 "cdclk change in progress\n");
6719 return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
6722 static int ilk_get_display_clock_speed(struct drm_device *dev)
6727 static int i945_get_display_clock_speed(struct drm_device *dev)
6732 static int i915_get_display_clock_speed(struct drm_device *dev)
6737 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
6742 static int pnv_get_display_clock_speed(struct drm_device *dev)
6746 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6748 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6749 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
6751 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
6753 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
6755 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
6758 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
6759 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
6761 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
6766 static int i915gm_get_display_clock_speed(struct drm_device *dev)
6770 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6772 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
6775 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6776 case GC_DISPLAY_CLOCK_333_MHZ:
6779 case GC_DISPLAY_CLOCK_190_200_MHZ:
6785 static int i865_get_display_clock_speed(struct drm_device *dev)
6790 static int i85x_get_display_clock_speed(struct drm_device *dev)
6795 * 852GM/852GMV only supports 133 MHz and the HPLLCC
6796 * encoding is different :(
6797 * FIXME is this the right way to detect 852GM/852GMV?
6799 if (dev->pdev->revision == 0x1)
6802 pci_bus_read_config_word(dev->pdev->bus,
6803 PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
6805 /* Assume that the hardware is in the high speed state. This
6806 * should be the default.
6808 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
6809 case GC_CLOCK_133_200:
6810 case GC_CLOCK_133_200_2:
6811 case GC_CLOCK_100_200:
6813 case GC_CLOCK_166_250:
6815 case GC_CLOCK_100_133:
6817 case GC_CLOCK_133_266:
6818 case GC_CLOCK_133_266_2:
6819 case GC_CLOCK_166_266:
6823 /* Shouldn't happen */
6827 static int i830_get_display_clock_speed(struct drm_device *dev)
6832 static unsigned int intel_hpll_vco(struct drm_device *dev)
6834 struct drm_i915_private *dev_priv = dev->dev_private;
6835 static const unsigned int blb_vco[8] = {
6842 static const unsigned int pnv_vco[8] = {
6849 static const unsigned int cl_vco[8] = {
6858 static const unsigned int elk_vco[8] = {
6864 static const unsigned int ctg_vco[8] = {
6872 const unsigned int *vco_table;
6876 /* FIXME other chipsets? */
6878 vco_table = ctg_vco;
6879 else if (IS_G4X(dev))
6880 vco_table = elk_vco;
6881 else if (IS_CRESTLINE(dev))
6883 else if (IS_PINEVIEW(dev))
6884 vco_table = pnv_vco;
6885 else if (IS_G33(dev))
6886 vco_table = blb_vco;
6890 tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO);
6892 vco = vco_table[tmp & 0x7];
6894 DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp);
6896 DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco);
6901 static int gm45_get_display_clock_speed(struct drm_device *dev)
6903 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6906 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6908 cdclk_sel = (tmp >> 12) & 0x1;
6914 return cdclk_sel ? 333333 : 222222;
6916 return cdclk_sel ? 320000 : 228571;
6918 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp);
6923 static int i965gm_get_display_clock_speed(struct drm_device *dev)
6925 static const uint8_t div_3200[] = { 16, 10, 8 };
6926 static const uint8_t div_4000[] = { 20, 12, 10 };
6927 static const uint8_t div_5333[] = { 24, 16, 14 };
6928 const uint8_t *div_table;
6929 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6932 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6934 cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
6936 if (cdclk_sel >= ARRAY_SIZE(div_3200))
6941 div_table = div_3200;
6944 div_table = div_4000;
6947 div_table = div_5333;
6953 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
6956 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp);
6960 static int g33_get_display_clock_speed(struct drm_device *dev)
6962 static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 };
6963 static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 };
6964 static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 };
6965 static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 };
6966 const uint8_t *div_table;
6967 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6970 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6972 cdclk_sel = (tmp >> 4) & 0x7;
6974 if (cdclk_sel >= ARRAY_SIZE(div_3200))
6979 div_table = div_3200;
6982 div_table = div_4000;
6985 div_table = div_4800;
6988 div_table = div_5333;
6994 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
6997 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp);
7002 intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
7004 while (*num > DATA_LINK_M_N_MASK ||
7005 *den > DATA_LINK_M_N_MASK) {
7011 static void compute_m_n(unsigned int m, unsigned int n,
7012 uint32_t *ret_m, uint32_t *ret_n)
7014 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
7015 *ret_m = div_u64((uint64_t) m * *ret_n, n);
7016 intel_reduce_m_n_ratio(ret_m, ret_n);
7020 intel_link_compute_m_n(int bits_per_pixel, int nlanes,
7021 int pixel_clock, int link_clock,
7022 struct intel_link_m_n *m_n)
7026 compute_m_n(bits_per_pixel * pixel_clock,
7027 link_clock * nlanes * 8,
7028 &m_n->gmch_m, &m_n->gmch_n);
7030 compute_m_n(pixel_clock, link_clock,
7031 &m_n->link_m, &m_n->link_n);
7034 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
7036 if (i915.panel_use_ssc >= 0)
7037 return i915.panel_use_ssc != 0;
7038 return dev_priv->vbt.lvds_use_ssc
7039 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
7042 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
7045 struct drm_device *dev = crtc_state->base.crtc->dev;
7046 struct drm_i915_private *dev_priv = dev->dev_private;
7049 WARN_ON(!crtc_state->base.state);
7051 if (IS_VALLEYVIEW(dev) || IS_BROXTON(dev)) {
7053 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7054 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
7055 refclk = dev_priv->vbt.lvds_ssc_freq;
7056 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7057 } else if (!IS_GEN2(dev)) {
7066 static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
7068 return (1 << dpll->n) << 16 | dpll->m2;
7071 static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
7073 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
7076 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
7077 struct intel_crtc_state *crtc_state,
7078 intel_clock_t *reduced_clock)
7080 struct drm_device *dev = crtc->base.dev;
7083 if (IS_PINEVIEW(dev)) {
7084 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
7086 fp2 = pnv_dpll_compute_fp(reduced_clock);
7088 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7090 fp2 = i9xx_dpll_compute_fp(reduced_clock);
7093 crtc_state->dpll_hw_state.fp0 = fp;
7095 crtc->lowfreq_avail = false;
7096 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7098 crtc_state->dpll_hw_state.fp1 = fp2;
7099 crtc->lowfreq_avail = true;
7101 crtc_state->dpll_hw_state.fp1 = fp;
7105 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
7111 * PLLB opamp always calibrates to max value of 0x3f, force enable it
7112 * and set it to a reasonable value instead.
7114 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7115 reg_val &= 0xffffff00;
7116 reg_val |= 0x00000030;
7117 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7119 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7120 reg_val &= 0x8cffffff;
7121 reg_val = 0x8c000000;
7122 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7124 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7125 reg_val &= 0xffffff00;
7126 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7128 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7129 reg_val &= 0x00ffffff;
7130 reg_val |= 0xb0000000;
7131 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7134 static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
7135 struct intel_link_m_n *m_n)
7137 struct drm_device *dev = crtc->base.dev;
7138 struct drm_i915_private *dev_priv = dev->dev_private;
7139 int pipe = crtc->pipe;
7141 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7142 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
7143 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
7144 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
7147 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
7148 struct intel_link_m_n *m_n,
7149 struct intel_link_m_n *m2_n2)
7151 struct drm_device *dev = crtc->base.dev;
7152 struct drm_i915_private *dev_priv = dev->dev_private;
7153 int pipe = crtc->pipe;
7154 enum transcoder transcoder = crtc->config->cpu_transcoder;
7156 if (INTEL_INFO(dev)->gen >= 5) {
7157 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
7158 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
7159 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
7160 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
7161 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
7162 * for gen < 8) and if DRRS is supported (to make sure the
7163 * registers are not unnecessarily accessed).
7165 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
7166 crtc->config->has_drrs) {
7167 I915_WRITE(PIPE_DATA_M2(transcoder),
7168 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
7169 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
7170 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
7171 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
7174 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7175 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
7176 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
7177 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
7181 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
7183 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
7186 dp_m_n = &crtc->config->dp_m_n;
7187 dp_m2_n2 = &crtc->config->dp_m2_n2;
7188 } else if (m_n == M2_N2) {
7191 * M2_N2 registers are not supported. Hence m2_n2 divider value
7192 * needs to be programmed into M1_N1.
7194 dp_m_n = &crtc->config->dp_m2_n2;
7196 DRM_ERROR("Unsupported divider value\n");
7200 if (crtc->config->has_pch_encoder)
7201 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
7203 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
7206 static void vlv_compute_dpll(struct intel_crtc *crtc,
7207 struct intel_crtc_state *pipe_config)
7212 * Enable DPIO clock input. We should never disable the reference
7213 * clock for pipe B, since VGA hotplug / manual detection depends
7216 dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REF_CLK_ENABLE_VLV |
7217 DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_REF_CLK_VLV;
7218 /* We should never disable this, set it here for state tracking */
7219 if (crtc->pipe == PIPE_B)
7220 dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7221 dpll |= DPLL_VCO_ENABLE;
7222 pipe_config->dpll_hw_state.dpll = dpll;
7224 dpll_md = (pipe_config->pixel_multiplier - 1)
7225 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7226 pipe_config->dpll_hw_state.dpll_md = dpll_md;
7229 static void vlv_prepare_pll(struct intel_crtc *crtc,
7230 const struct intel_crtc_state *pipe_config)
7232 struct drm_device *dev = crtc->base.dev;
7233 struct drm_i915_private *dev_priv = dev->dev_private;
7234 int pipe = crtc->pipe;
7236 u32 bestn, bestm1, bestm2, bestp1, bestp2;
7237 u32 coreclk, reg_val;
7239 mutex_lock(&dev_priv->sb_lock);
7241 bestn = pipe_config->dpll.n;
7242 bestm1 = pipe_config->dpll.m1;
7243 bestm2 = pipe_config->dpll.m2;
7244 bestp1 = pipe_config->dpll.p1;
7245 bestp2 = pipe_config->dpll.p2;
7247 /* See eDP HDMI DPIO driver vbios notes doc */
7249 /* PLL B needs special handling */
7251 vlv_pllb_recal_opamp(dev_priv, pipe);
7253 /* Set up Tx target for periodic Rcomp update */
7254 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
7256 /* Disable target IRef on PLL */
7257 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
7258 reg_val &= 0x00ffffff;
7259 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
7261 /* Disable fast lock */
7262 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
7264 /* Set idtafcrecal before PLL is enabled */
7265 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
7266 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
7267 mdiv |= ((bestn << DPIO_N_SHIFT));
7268 mdiv |= (1 << DPIO_K_SHIFT);
7271 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
7272 * but we don't support that).
7273 * Note: don't use the DAC post divider as it seems unstable.
7275 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
7276 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7278 mdiv |= DPIO_ENABLE_CALIBRATION;
7279 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7281 /* Set HBR and RBR LPF coefficients */
7282 if (pipe_config->port_clock == 162000 ||
7283 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
7284 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
7285 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7288 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7291 if (pipe_config->has_dp_encoder) {
7292 /* Use SSC source */
7294 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7297 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7299 } else { /* HDMI or VGA */
7300 /* Use bend source */
7302 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7305 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7309 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
7310 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
7311 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
7312 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
7313 coreclk |= 0x01000000;
7314 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
7316 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
7317 mutex_unlock(&dev_priv->sb_lock);
7320 static void chv_compute_dpll(struct intel_crtc *crtc,
7321 struct intel_crtc_state *pipe_config)
7323 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
7324 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
7326 if (crtc->pipe != PIPE_A)
7327 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7329 pipe_config->dpll_hw_state.dpll_md =
7330 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7333 static void chv_prepare_pll(struct intel_crtc *crtc,
7334 const struct intel_crtc_state *pipe_config)
7336 struct drm_device *dev = crtc->base.dev;
7337 struct drm_i915_private *dev_priv = dev->dev_private;
7338 int pipe = crtc->pipe;
7339 int dpll_reg = DPLL(crtc->pipe);
7340 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7341 u32 loopfilter, tribuf_calcntr;
7342 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
7346 bestn = pipe_config->dpll.n;
7347 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7348 bestm1 = pipe_config->dpll.m1;
7349 bestm2 = pipe_config->dpll.m2 >> 22;
7350 bestp1 = pipe_config->dpll.p1;
7351 bestp2 = pipe_config->dpll.p2;
7352 vco = pipe_config->dpll.vco;
7357 * Enable Refclk and SSC
7359 I915_WRITE(dpll_reg,
7360 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
7362 mutex_lock(&dev_priv->sb_lock);
7364 /* p1 and p2 divider */
7365 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7366 5 << DPIO_CHV_S1_DIV_SHIFT |
7367 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7368 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7369 1 << DPIO_CHV_K_DIV_SHIFT);
7371 /* Feedback post-divider - m2 */
7372 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7374 /* Feedback refclk divider - n and m1 */
7375 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7376 DPIO_CHV_M1_DIV_BY_2 |
7377 1 << DPIO_CHV_N_DIV_SHIFT);
7379 /* M2 fraction division */
7381 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
7383 /* M2 fraction division enable */
7384 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7385 dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7386 dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7388 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7389 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
7391 /* Program digital lock detect threshold */
7392 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7393 dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7394 DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7395 dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7397 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7398 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7401 if (vco == 5400000) {
7402 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7403 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7404 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7405 tribuf_calcntr = 0x9;
7406 } else if (vco <= 6200000) {
7407 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7408 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7409 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7410 tribuf_calcntr = 0x9;
7411 } else if (vco <= 6480000) {
7412 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7413 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7414 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7415 tribuf_calcntr = 0x8;
7417 /* Not supported. Apply the same limits as in the max case */
7418 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7419 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7420 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7423 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7425 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
7426 dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7427 dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7428 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7431 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7432 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7435 mutex_unlock(&dev_priv->sb_lock);
7439 * vlv_force_pll_on - forcibly enable just the PLL
7440 * @dev_priv: i915 private structure
7441 * @pipe: pipe PLL to enable
7442 * @dpll: PLL configuration
7444 * Enable the PLL for @pipe using the supplied @dpll config. To be used
7445 * in cases where we need the PLL enabled even when @pipe is not going to
7448 void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
7449 const struct dpll *dpll)
7451 struct intel_crtc *crtc =
7452 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
7453 struct intel_crtc_state pipe_config = {
7454 .base.crtc = &crtc->base,
7455 .pixel_multiplier = 1,
7459 if (IS_CHERRYVIEW(dev)) {
7460 chv_compute_dpll(crtc, &pipe_config);
7461 chv_prepare_pll(crtc, &pipe_config);
7462 chv_enable_pll(crtc, &pipe_config);
7464 vlv_compute_dpll(crtc, &pipe_config);
7465 vlv_prepare_pll(crtc, &pipe_config);
7466 vlv_enable_pll(crtc, &pipe_config);
7471 * vlv_force_pll_off - forcibly disable just the PLL
7472 * @dev_priv: i915 private structure
7473 * @pipe: pipe PLL to disable
7475 * Disable the PLL for @pipe. To be used in cases where we need
7476 * the PLL enabled even when @pipe is not going to be enabled.
7478 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
7480 if (IS_CHERRYVIEW(dev))
7481 chv_disable_pll(to_i915(dev), pipe);
7483 vlv_disable_pll(to_i915(dev), pipe);
7486 static void i9xx_compute_dpll(struct intel_crtc *crtc,
7487 struct intel_crtc_state *crtc_state,
7488 intel_clock_t *reduced_clock,
7491 struct drm_device *dev = crtc->base.dev;
7492 struct drm_i915_private *dev_priv = dev->dev_private;
7495 struct dpll *clock = &crtc_state->dpll;
7497 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7499 is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7500 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
7502 dpll = DPLL_VGA_MODE_DIS;
7504 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
7505 dpll |= DPLLB_MODE_LVDS;
7507 dpll |= DPLLB_MODE_DAC_SERIAL;
7509 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
7510 dpll |= (crtc_state->pixel_multiplier - 1)
7511 << SDVO_MULTIPLIER_SHIFT_HIRES;
7515 dpll |= DPLL_SDVO_HIGH_SPEED;
7517 if (crtc_state->has_dp_encoder)
7518 dpll |= DPLL_SDVO_HIGH_SPEED;
7520 /* compute bitmask from p1 value */
7521 if (IS_PINEVIEW(dev))
7522 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7524 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7525 if (IS_G4X(dev) && reduced_clock)
7526 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7528 switch (clock->p2) {
7530 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7533 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7536 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7539 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7542 if (INTEL_INFO(dev)->gen >= 4)
7543 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7545 if (crtc_state->sdvo_tv_clock)
7546 dpll |= PLL_REF_INPUT_TVCLKINBC;
7547 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7548 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7549 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7551 dpll |= PLL_REF_INPUT_DREFCLK;
7553 dpll |= DPLL_VCO_ENABLE;
7554 crtc_state->dpll_hw_state.dpll = dpll;
7556 if (INTEL_INFO(dev)->gen >= 4) {
7557 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
7558 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7559 crtc_state->dpll_hw_state.dpll_md = dpll_md;
7563 static void i8xx_compute_dpll(struct intel_crtc *crtc,
7564 struct intel_crtc_state *crtc_state,
7565 intel_clock_t *reduced_clock,
7568 struct drm_device *dev = crtc->base.dev;
7569 struct drm_i915_private *dev_priv = dev->dev_private;
7571 struct dpll *clock = &crtc_state->dpll;
7573 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7575 dpll = DPLL_VGA_MODE_DIS;
7577 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7578 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7581 dpll |= PLL_P1_DIVIDE_BY_TWO;
7583 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7585 dpll |= PLL_P2_DIVIDE_BY_4;
7588 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
7589 dpll |= DPLL_DVO_2X_MODE;
7591 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7592 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7593 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7595 dpll |= PLL_REF_INPUT_DREFCLK;
7597 dpll |= DPLL_VCO_ENABLE;
7598 crtc_state->dpll_hw_state.dpll = dpll;
7601 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
7603 struct drm_device *dev = intel_crtc->base.dev;
7604 struct drm_i915_private *dev_priv = dev->dev_private;
7605 enum pipe pipe = intel_crtc->pipe;
7606 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
7607 struct drm_display_mode *adjusted_mode =
7608 &intel_crtc->config->base.adjusted_mode;
7609 uint32_t crtc_vtotal, crtc_vblank_end;
7612 /* We need to be careful not to changed the adjusted mode, for otherwise
7613 * the hw state checker will get angry at the mismatch. */
7614 crtc_vtotal = adjusted_mode->crtc_vtotal;
7615 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
7617 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
7618 /* the chip adds 2 halflines automatically */
7620 crtc_vblank_end -= 1;
7622 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7623 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7625 vsyncshift = adjusted_mode->crtc_hsync_start -
7626 adjusted_mode->crtc_htotal / 2;
7628 vsyncshift += adjusted_mode->crtc_htotal;
7631 if (INTEL_INFO(dev)->gen > 3)
7632 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
7634 I915_WRITE(HTOTAL(cpu_transcoder),
7635 (adjusted_mode->crtc_hdisplay - 1) |
7636 ((adjusted_mode->crtc_htotal - 1) << 16));
7637 I915_WRITE(HBLANK(cpu_transcoder),
7638 (adjusted_mode->crtc_hblank_start - 1) |
7639 ((adjusted_mode->crtc_hblank_end - 1) << 16));
7640 I915_WRITE(HSYNC(cpu_transcoder),
7641 (adjusted_mode->crtc_hsync_start - 1) |
7642 ((adjusted_mode->crtc_hsync_end - 1) << 16));
7644 I915_WRITE(VTOTAL(cpu_transcoder),
7645 (adjusted_mode->crtc_vdisplay - 1) |
7646 ((crtc_vtotal - 1) << 16));
7647 I915_WRITE(VBLANK(cpu_transcoder),
7648 (adjusted_mode->crtc_vblank_start - 1) |
7649 ((crtc_vblank_end - 1) << 16));
7650 I915_WRITE(VSYNC(cpu_transcoder),
7651 (adjusted_mode->crtc_vsync_start - 1) |
7652 ((adjusted_mode->crtc_vsync_end - 1) << 16));
7654 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7655 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7656 * documented on the DDI_FUNC_CTL register description, EDP Input Select
7658 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
7659 (pipe == PIPE_B || pipe == PIPE_C))
7660 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7662 /* pipesrc controls the size that is scaled from, which should
7663 * always be the user's requested size.
7665 I915_WRITE(PIPESRC(pipe),
7666 ((intel_crtc->config->pipe_src_w - 1) << 16) |
7667 (intel_crtc->config->pipe_src_h - 1));
7670 static void intel_get_pipe_timings(struct intel_crtc *crtc,
7671 struct intel_crtc_state *pipe_config)
7673 struct drm_device *dev = crtc->base.dev;
7674 struct drm_i915_private *dev_priv = dev->dev_private;
7675 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7678 tmp = I915_READ(HTOTAL(cpu_transcoder));
7679 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7680 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
7681 tmp = I915_READ(HBLANK(cpu_transcoder));
7682 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
7683 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
7684 tmp = I915_READ(HSYNC(cpu_transcoder));
7685 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7686 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
7688 tmp = I915_READ(VTOTAL(cpu_transcoder));
7689 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7690 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
7691 tmp = I915_READ(VBLANK(cpu_transcoder));
7692 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
7693 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
7694 tmp = I915_READ(VSYNC(cpu_transcoder));
7695 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7696 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
7698 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
7699 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7700 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7701 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
7704 tmp = I915_READ(PIPESRC(crtc->pipe));
7705 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7706 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7708 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7709 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
7712 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
7713 struct intel_crtc_state *pipe_config)
7715 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7716 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7717 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7718 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
7720 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7721 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7722 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7723 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
7725 mode->flags = pipe_config->base.adjusted_mode.flags;
7726 mode->type = DRM_MODE_TYPE_DRIVER;
7728 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7729 mode->flags |= pipe_config->base.adjusted_mode.flags;
7731 mode->hsync = drm_mode_hsync(mode);
7732 mode->vrefresh = drm_mode_vrefresh(mode);
7733 drm_mode_set_name(mode);
7736 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
7738 struct drm_device *dev = intel_crtc->base.dev;
7739 struct drm_i915_private *dev_priv = dev->dev_private;
7744 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
7745 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
7746 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
7748 if (intel_crtc->config->double_wide)
7749 pipeconf |= PIPECONF_DOUBLE_WIDE;
7751 /* only g4x and later have fancy bpc/dither controls */
7752 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
7753 /* Bspec claims that we can't use dithering for 30bpp pipes. */
7754 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
7755 pipeconf |= PIPECONF_DITHER_EN |
7756 PIPECONF_DITHER_TYPE_SP;
7758 switch (intel_crtc->config->pipe_bpp) {
7760 pipeconf |= PIPECONF_6BPC;
7763 pipeconf |= PIPECONF_8BPC;
7766 pipeconf |= PIPECONF_10BPC;
7769 /* Case prevented by intel_choose_pipe_bpp_dither. */
7774 if (HAS_PIPE_CXSR(dev)) {
7775 if (intel_crtc->lowfreq_avail) {
7776 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
7777 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
7779 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
7783 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
7784 if (INTEL_INFO(dev)->gen < 4 ||
7785 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7786 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7788 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7790 pipeconf |= PIPECONF_PROGRESSIVE;
7792 if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
7793 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
7795 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
7796 POSTING_READ(PIPECONF(intel_crtc->pipe));
7799 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
7800 struct intel_crtc_state *crtc_state)
7802 struct drm_device *dev = crtc->base.dev;
7803 struct drm_i915_private *dev_priv = dev->dev_private;
7804 int refclk, num_connectors = 0;
7805 intel_clock_t clock;
7807 bool is_dsi = false;
7808 struct intel_encoder *encoder;
7809 const intel_limit_t *limit;
7810 struct drm_atomic_state *state = crtc_state->base.state;
7811 struct drm_connector *connector;
7812 struct drm_connector_state *connector_state;
7815 memset(&crtc_state->dpll_hw_state, 0,
7816 sizeof(crtc_state->dpll_hw_state));
7818 for_each_connector_in_state(state, connector, connector_state, i) {
7819 if (connector_state->crtc != &crtc->base)
7822 encoder = to_intel_encoder(connector_state->best_encoder);
7824 switch (encoder->type) {
7825 case INTEL_OUTPUT_DSI:
7838 if (!crtc_state->clock_set) {
7839 refclk = i9xx_get_refclk(crtc_state, num_connectors);
7842 * Returns a set of divisors for the desired target clock with
7843 * the given refclk, or FALSE. The returned values represent
7844 * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
7847 limit = intel_limit(crtc_state, refclk);
7848 ok = dev_priv->display.find_dpll(limit, crtc_state,
7849 crtc_state->port_clock,
7850 refclk, NULL, &clock);
7852 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7856 /* Compat-code for transition, will disappear. */
7857 crtc_state->dpll.n = clock.n;
7858 crtc_state->dpll.m1 = clock.m1;
7859 crtc_state->dpll.m2 = clock.m2;
7860 crtc_state->dpll.p1 = clock.p1;
7861 crtc_state->dpll.p2 = clock.p2;
7865 i8xx_compute_dpll(crtc, crtc_state, NULL,
7867 } else if (IS_CHERRYVIEW(dev)) {
7868 chv_compute_dpll(crtc, crtc_state);
7869 } else if (IS_VALLEYVIEW(dev)) {
7870 vlv_compute_dpll(crtc, crtc_state);
7872 i9xx_compute_dpll(crtc, crtc_state, NULL,
7879 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
7880 struct intel_crtc_state *pipe_config)
7882 struct drm_device *dev = crtc->base.dev;
7883 struct drm_i915_private *dev_priv = dev->dev_private;
7886 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
7889 tmp = I915_READ(PFIT_CONTROL);
7890 if (!(tmp & PFIT_ENABLE))
7893 /* Check whether the pfit is attached to our pipe. */
7894 if (INTEL_INFO(dev)->gen < 4) {
7895 if (crtc->pipe != PIPE_B)
7898 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
7902 pipe_config->gmch_pfit.control = tmp;
7903 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
7904 if (INTEL_INFO(dev)->gen < 5)
7905 pipe_config->gmch_pfit.lvds_border_bits =
7906 I915_READ(LVDS) & LVDS_BORDER_ENABLE;
7909 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
7910 struct intel_crtc_state *pipe_config)
7912 struct drm_device *dev = crtc->base.dev;
7913 struct drm_i915_private *dev_priv = dev->dev_private;
7914 int pipe = pipe_config->cpu_transcoder;
7915 intel_clock_t clock;
7917 int refclk = 100000;
7919 /* In case of MIPI DPLL will not even be used */
7920 if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
7923 mutex_lock(&dev_priv->sb_lock);
7924 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
7925 mutex_unlock(&dev_priv->sb_lock);
7927 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
7928 clock.m2 = mdiv & DPIO_M2DIV_MASK;
7929 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
7930 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
7931 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
7933 pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
7937 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
7938 struct intel_initial_plane_config *plane_config)
7940 struct drm_device *dev = crtc->base.dev;
7941 struct drm_i915_private *dev_priv = dev->dev_private;
7942 u32 val, base, offset;
7943 int pipe = crtc->pipe, plane = crtc->plane;
7944 int fourcc, pixel_format;
7945 unsigned int aligned_height;
7946 struct drm_framebuffer *fb;
7947 struct intel_framebuffer *intel_fb;
7949 val = I915_READ(DSPCNTR(plane));
7950 if (!(val & DISPLAY_PLANE_ENABLE))
7953 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
7955 DRM_DEBUG_KMS("failed to alloc fb\n");
7959 fb = &intel_fb->base;
7961 if (INTEL_INFO(dev)->gen >= 4) {
7962 if (val & DISPPLANE_TILED) {
7963 plane_config->tiling = I915_TILING_X;
7964 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7968 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
7969 fourcc = i9xx_format_to_fourcc(pixel_format);
7970 fb->pixel_format = fourcc;
7971 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
7973 if (INTEL_INFO(dev)->gen >= 4) {
7974 if (plane_config->tiling)
7975 offset = I915_READ(DSPTILEOFF(plane));
7977 offset = I915_READ(DSPLINOFF(plane));
7978 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
7980 base = I915_READ(DSPADDR(plane));
7982 plane_config->base = base;
7984 val = I915_READ(PIPESRC(pipe));
7985 fb->width = ((val >> 16) & 0xfff) + 1;
7986 fb->height = ((val >> 0) & 0xfff) + 1;
7988 val = I915_READ(DSPSTRIDE(pipe));
7989 fb->pitches[0] = val & 0xffffffc0;
7991 aligned_height = intel_fb_align_height(dev, fb->height,
7995 plane_config->size = fb->pitches[0] * aligned_height;
7997 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
7998 pipe_name(pipe), plane, fb->width, fb->height,
7999 fb->bits_per_pixel, base, fb->pitches[0],
8000 plane_config->size);
8002 plane_config->fb = intel_fb;
8005 static void chv_crtc_clock_get(struct intel_crtc *crtc,
8006 struct intel_crtc_state *pipe_config)
8008 struct drm_device *dev = crtc->base.dev;
8009 struct drm_i915_private *dev_priv = dev->dev_private;
8010 int pipe = pipe_config->cpu_transcoder;
8011 enum dpio_channel port = vlv_pipe_to_channel(pipe);
8012 intel_clock_t clock;
8013 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
8014 int refclk = 100000;
8016 mutex_lock(&dev_priv->sb_lock);
8017 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
8018 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
8019 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
8020 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
8021 pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
8022 mutex_unlock(&dev_priv->sb_lock);
8024 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
8025 clock.m2 = (pll_dw0 & 0xff) << 22;
8026 if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
8027 clock.m2 |= pll_dw2 & 0x3fffff;
8028 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
8029 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
8030 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
8032 pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
8035 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
8036 struct intel_crtc_state *pipe_config)
8038 struct drm_device *dev = crtc->base.dev;
8039 struct drm_i915_private *dev_priv = dev->dev_private;
8042 if (!intel_display_power_is_enabled(dev_priv,
8043 POWER_DOMAIN_PIPE(crtc->pipe)))
8046 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8047 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
8049 tmp = I915_READ(PIPECONF(crtc->pipe));
8050 if (!(tmp & PIPECONF_ENABLE))
8053 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
8054 switch (tmp & PIPECONF_BPC_MASK) {
8056 pipe_config->pipe_bpp = 18;
8059 pipe_config->pipe_bpp = 24;
8061 case PIPECONF_10BPC:
8062 pipe_config->pipe_bpp = 30;
8069 if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
8070 pipe_config->limited_color_range = true;
8072 if (INTEL_INFO(dev)->gen < 4)
8073 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
8075 intel_get_pipe_timings(crtc, pipe_config);
8077 i9xx_get_pfit_config(crtc, pipe_config);
8079 if (INTEL_INFO(dev)->gen >= 4) {
8080 tmp = I915_READ(DPLL_MD(crtc->pipe));
8081 pipe_config->pixel_multiplier =
8082 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
8083 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8084 pipe_config->dpll_hw_state.dpll_md = tmp;
8085 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
8086 tmp = I915_READ(DPLL(crtc->pipe));
8087 pipe_config->pixel_multiplier =
8088 ((tmp & SDVO_MULTIPLIER_MASK)
8089 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
8091 /* Note that on i915G/GM the pixel multiplier is in the sdvo
8092 * port and will be fixed up in the encoder->get_config
8094 pipe_config->pixel_multiplier = 1;
8096 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
8097 if (!IS_VALLEYVIEW(dev)) {
8099 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
8100 * on 830. Filter it out here so that we don't
8101 * report errors due to that.
8104 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
8106 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
8107 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
8109 /* Mask out read-only status bits. */
8110 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
8111 DPLL_PORTC_READY_MASK |
8112 DPLL_PORTB_READY_MASK);
8115 if (IS_CHERRYVIEW(dev))
8116 chv_crtc_clock_get(crtc, pipe_config);
8117 else if (IS_VALLEYVIEW(dev))
8118 vlv_crtc_clock_get(crtc, pipe_config);
8120 i9xx_crtc_clock_get(crtc, pipe_config);
8125 static void ironlake_init_pch_refclk(struct drm_device *dev)
8127 struct drm_i915_private *dev_priv = dev->dev_private;
8128 struct intel_encoder *encoder;
8130 bool has_lvds = false;
8131 bool has_cpu_edp = false;
8132 bool has_panel = false;
8133 bool has_ck505 = false;
8134 bool can_ssc = false;
8136 /* We need to take the global config into account */
8137 for_each_intel_encoder(dev, encoder) {
8138 switch (encoder->type) {
8139 case INTEL_OUTPUT_LVDS:
8143 case INTEL_OUTPUT_EDP:
8145 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
8153 if (HAS_PCH_IBX(dev)) {
8154 has_ck505 = dev_priv->vbt.display_clock_mode;
8155 can_ssc = has_ck505;
8161 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
8162 has_panel, has_lvds, has_ck505);
8164 /* Ironlake: try to setup display ref clock before DPLL
8165 * enabling. This is only under driver's control after
8166 * PCH B stepping, previous chipset stepping should be
8167 * ignoring this setting.
8169 val = I915_READ(PCH_DREF_CONTROL);
8171 /* As we must carefully and slowly disable/enable each source in turn,
8172 * compute the final state we want first and check if we need to
8173 * make any changes at all.
8176 final &= ~DREF_NONSPREAD_SOURCE_MASK;
8178 final |= DREF_NONSPREAD_CK505_ENABLE;
8180 final |= DREF_NONSPREAD_SOURCE_ENABLE;
8182 final &= ~DREF_SSC_SOURCE_MASK;
8183 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8184 final &= ~DREF_SSC1_ENABLE;
8187 final |= DREF_SSC_SOURCE_ENABLE;
8189 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8190 final |= DREF_SSC1_ENABLE;
8193 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8194 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8196 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8198 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8200 final |= DREF_SSC_SOURCE_DISABLE;
8201 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8207 /* Always enable nonspread source */
8208 val &= ~DREF_NONSPREAD_SOURCE_MASK;
8211 val |= DREF_NONSPREAD_CK505_ENABLE;
8213 val |= DREF_NONSPREAD_SOURCE_ENABLE;
8216 val &= ~DREF_SSC_SOURCE_MASK;
8217 val |= DREF_SSC_SOURCE_ENABLE;
8219 /* SSC must be turned on before enabling the CPU output */
8220 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8221 DRM_DEBUG_KMS("Using SSC on panel\n");
8222 val |= DREF_SSC1_ENABLE;
8224 val &= ~DREF_SSC1_ENABLE;
8226 /* Get SSC going before enabling the outputs */
8227 I915_WRITE(PCH_DREF_CONTROL, val);
8228 POSTING_READ(PCH_DREF_CONTROL);
8231 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8233 /* Enable CPU source on CPU attached eDP */
8235 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8236 DRM_DEBUG_KMS("Using SSC on eDP\n");
8237 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8239 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8241 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8243 I915_WRITE(PCH_DREF_CONTROL, val);
8244 POSTING_READ(PCH_DREF_CONTROL);
8247 DRM_DEBUG_KMS("Disabling SSC entirely\n");
8249 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8251 /* Turn off CPU output */
8252 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8254 I915_WRITE(PCH_DREF_CONTROL, val);
8255 POSTING_READ(PCH_DREF_CONTROL);
8258 /* Turn off the SSC source */
8259 val &= ~DREF_SSC_SOURCE_MASK;
8260 val |= DREF_SSC_SOURCE_DISABLE;
8263 val &= ~DREF_SSC1_ENABLE;
8265 I915_WRITE(PCH_DREF_CONTROL, val);
8266 POSTING_READ(PCH_DREF_CONTROL);
8270 BUG_ON(val != final);
8273 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
8277 tmp = I915_READ(SOUTH_CHICKEN2);
8278 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
8279 I915_WRITE(SOUTH_CHICKEN2, tmp);
8281 if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
8282 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
8283 DRM_ERROR("FDI mPHY reset assert timeout\n");
8285 tmp = I915_READ(SOUTH_CHICKEN2);
8286 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
8287 I915_WRITE(SOUTH_CHICKEN2, tmp);
8289 if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
8290 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
8291 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
8294 /* WaMPhyProgramming:hsw */
8295 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
8299 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
8300 tmp &= ~(0xFF << 24);
8301 tmp |= (0x12 << 24);
8302 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
8304 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
8306 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
8308 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
8310 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
8312 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
8313 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8314 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
8316 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
8317 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8318 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
8320 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8323 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
8325 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8328 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
8330 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8333 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8335 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8338 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8340 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8341 tmp &= ~(0xFF << 16);
8342 tmp |= (0x1C << 16);
8343 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8345 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8346 tmp &= ~(0xFF << 16);
8347 tmp |= (0x1C << 16);
8348 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8350 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8352 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
8354 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8356 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
8358 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8359 tmp &= ~(0xF << 28);
8361 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
8363 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8364 tmp &= ~(0xF << 28);
8366 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
8369 /* Implements 3 different sequences from BSpec chapter "Display iCLK
8370 * Programming" based on the parameters passed:
8371 * - Sequence to enable CLKOUT_DP
8372 * - Sequence to enable CLKOUT_DP without spread
8373 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8375 static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
8378 struct drm_i915_private *dev_priv = dev->dev_private;
8381 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8383 if (WARN(dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE &&
8384 with_fdi, "LP PCH doesn't have FDI\n"))
8387 mutex_lock(&dev_priv->sb_lock);
8389 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8390 tmp &= ~SBI_SSCCTL_DISABLE;
8391 tmp |= SBI_SSCCTL_PATHALT;
8392 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8397 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8398 tmp &= ~SBI_SSCCTL_PATHALT;
8399 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8402 lpt_reset_fdi_mphy(dev_priv);
8403 lpt_program_fdi_mphy(dev_priv);
8407 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
8408 SBI_GEN0 : SBI_DBUFF0;
8409 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8410 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8411 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8413 mutex_unlock(&dev_priv->sb_lock);
8416 /* Sequence to disable CLKOUT_DP */
8417 static void lpt_disable_clkout_dp(struct drm_device *dev)
8419 struct drm_i915_private *dev_priv = dev->dev_private;
8422 mutex_lock(&dev_priv->sb_lock);
8424 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
8425 SBI_GEN0 : SBI_DBUFF0;
8426 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8427 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8428 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8430 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8431 if (!(tmp & SBI_SSCCTL_DISABLE)) {
8432 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8433 tmp |= SBI_SSCCTL_PATHALT;
8434 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8437 tmp |= SBI_SSCCTL_DISABLE;
8438 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8441 mutex_unlock(&dev_priv->sb_lock);
8444 static void lpt_init_pch_refclk(struct drm_device *dev)
8446 struct intel_encoder *encoder;
8447 bool has_vga = false;
8449 for_each_intel_encoder(dev, encoder) {
8450 switch (encoder->type) {
8451 case INTEL_OUTPUT_ANALOG:
8460 lpt_enable_clkout_dp(dev, true, true);
8462 lpt_disable_clkout_dp(dev);
8466 * Initialize reference clocks when the driver loads
8468 void intel_init_pch_refclk(struct drm_device *dev)
8470 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
8471 ironlake_init_pch_refclk(dev);
8472 else if (HAS_PCH_LPT(dev))
8473 lpt_init_pch_refclk(dev);
8476 static int ironlake_get_refclk(struct intel_crtc_state *crtc_state)
8478 struct drm_device *dev = crtc_state->base.crtc->dev;
8479 struct drm_i915_private *dev_priv = dev->dev_private;
8480 struct drm_atomic_state *state = crtc_state->base.state;
8481 struct drm_connector *connector;
8482 struct drm_connector_state *connector_state;
8483 struct intel_encoder *encoder;
8484 int num_connectors = 0, i;
8485 bool is_lvds = false;
8487 for_each_connector_in_state(state, connector, connector_state, i) {
8488 if (connector_state->crtc != crtc_state->base.crtc)
8491 encoder = to_intel_encoder(connector_state->best_encoder);
8493 switch (encoder->type) {
8494 case INTEL_OUTPUT_LVDS:
8503 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
8504 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
8505 dev_priv->vbt.lvds_ssc_freq);
8506 return dev_priv->vbt.lvds_ssc_freq;
8512 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
8514 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8515 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8516 int pipe = intel_crtc->pipe;
8521 switch (intel_crtc->config->pipe_bpp) {
8523 val |= PIPECONF_6BPC;
8526 val |= PIPECONF_8BPC;
8529 val |= PIPECONF_10BPC;
8532 val |= PIPECONF_12BPC;
8535 /* Case prevented by intel_choose_pipe_bpp_dither. */
8539 if (intel_crtc->config->dither)
8540 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8542 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8543 val |= PIPECONF_INTERLACED_ILK;
8545 val |= PIPECONF_PROGRESSIVE;
8547 if (intel_crtc->config->limited_color_range)
8548 val |= PIPECONF_COLOR_RANGE_SELECT;
8550 I915_WRITE(PIPECONF(pipe), val);
8551 POSTING_READ(PIPECONF(pipe));
8555 * Set up the pipe CSC unit.
8557 * Currently only full range RGB to limited range RGB conversion
8558 * is supported, but eventually this should handle various
8559 * RGB<->YCbCr scenarios as well.
8561 static void intel_set_pipe_csc(struct drm_crtc *crtc)
8563 struct drm_device *dev = crtc->dev;
8564 struct drm_i915_private *dev_priv = dev->dev_private;
8565 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8566 int pipe = intel_crtc->pipe;
8567 uint16_t coeff = 0x7800; /* 1.0 */
8570 * TODO: Check what kind of values actually come out of the pipe
8571 * with these coeff/postoff values and adjust to get the best
8572 * accuracy. Perhaps we even need to take the bpc value into
8576 if (intel_crtc->config->limited_color_range)
8577 coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
8580 * GY/GU and RY/RU should be the other way around according
8581 * to BSpec, but reality doesn't agree. Just set them up in
8582 * a way that results in the correct picture.
8584 I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
8585 I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
8587 I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
8588 I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
8590 I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
8591 I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
8593 I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
8594 I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
8595 I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
8597 if (INTEL_INFO(dev)->gen > 6) {
8598 uint16_t postoff = 0;
8600 if (intel_crtc->config->limited_color_range)
8601 postoff = (16 * (1 << 12) / 255) & 0x1fff;
8603 I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
8604 I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
8605 I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
8607 I915_WRITE(PIPE_CSC_MODE(pipe), 0);
8609 uint32_t mode = CSC_MODE_YUV_TO_RGB;
8611 if (intel_crtc->config->limited_color_range)
8612 mode |= CSC_BLACK_SCREEN_OFFSET;
8614 I915_WRITE(PIPE_CSC_MODE(pipe), mode);
8618 static void haswell_set_pipeconf(struct drm_crtc *crtc)
8620 struct drm_device *dev = crtc->dev;
8621 struct drm_i915_private *dev_priv = dev->dev_private;
8622 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8623 enum pipe pipe = intel_crtc->pipe;
8624 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
8629 if (IS_HASWELL(dev) && intel_crtc->config->dither)
8630 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8632 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8633 val |= PIPECONF_INTERLACED_ILK;
8635 val |= PIPECONF_PROGRESSIVE;
8637 I915_WRITE(PIPECONF(cpu_transcoder), val);
8638 POSTING_READ(PIPECONF(cpu_transcoder));
8640 I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
8641 POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
8643 if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
8646 switch (intel_crtc->config->pipe_bpp) {
8648 val |= PIPEMISC_DITHER_6_BPC;
8651 val |= PIPEMISC_DITHER_8_BPC;
8654 val |= PIPEMISC_DITHER_10_BPC;
8657 val |= PIPEMISC_DITHER_12_BPC;
8660 /* Case prevented by pipe_config_set_bpp. */
8664 if (intel_crtc->config->dither)
8665 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8667 I915_WRITE(PIPEMISC(pipe), val);
8671 static bool ironlake_compute_clocks(struct drm_crtc *crtc,
8672 struct intel_crtc_state *crtc_state,
8673 intel_clock_t *clock,
8674 bool *has_reduced_clock,
8675 intel_clock_t *reduced_clock)
8677 struct drm_device *dev = crtc->dev;
8678 struct drm_i915_private *dev_priv = dev->dev_private;
8680 const intel_limit_t *limit;
8683 refclk = ironlake_get_refclk(crtc_state);
8686 * Returns a set of divisors for the desired target clock with the given
8687 * refclk, or FALSE. The returned values represent the clock equation:
8688 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
8690 limit = intel_limit(crtc_state, refclk);
8691 ret = dev_priv->display.find_dpll(limit, crtc_state,
8692 crtc_state->port_clock,
8693 refclk, NULL, clock);
8700 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8703 * Account for spread spectrum to avoid
8704 * oversubscribing the link. Max center spread
8705 * is 2.5%; use 5% for safety's sake.
8707 u32 bps = target_clock * bpp * 21 / 20;
8708 return DIV_ROUND_UP(bps, link_bw * 8);
8711 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
8713 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
8716 static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
8717 struct intel_crtc_state *crtc_state,
8719 intel_clock_t *reduced_clock, u32 *fp2)
8721 struct drm_crtc *crtc = &intel_crtc->base;
8722 struct drm_device *dev = crtc->dev;
8723 struct drm_i915_private *dev_priv = dev->dev_private;
8724 struct drm_atomic_state *state = crtc_state->base.state;
8725 struct drm_connector *connector;
8726 struct drm_connector_state *connector_state;
8727 struct intel_encoder *encoder;
8729 int factor, num_connectors = 0, i;
8730 bool is_lvds = false, is_sdvo = false;
8732 for_each_connector_in_state(state, connector, connector_state, i) {
8733 if (connector_state->crtc != crtc_state->base.crtc)
8736 encoder = to_intel_encoder(connector_state->best_encoder);
8738 switch (encoder->type) {
8739 case INTEL_OUTPUT_LVDS:
8742 case INTEL_OUTPUT_SDVO:
8743 case INTEL_OUTPUT_HDMI:
8753 /* Enable autotuning of the PLL clock (if permissible) */
8756 if ((intel_panel_use_ssc(dev_priv) &&
8757 dev_priv->vbt.lvds_ssc_freq == 100000) ||
8758 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
8760 } else if (crtc_state->sdvo_tv_clock)
8763 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
8766 if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
8772 dpll |= DPLLB_MODE_LVDS;
8774 dpll |= DPLLB_MODE_DAC_SERIAL;
8776 dpll |= (crtc_state->pixel_multiplier - 1)
8777 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
8780 dpll |= DPLL_SDVO_HIGH_SPEED;
8781 if (crtc_state->has_dp_encoder)
8782 dpll |= DPLL_SDVO_HIGH_SPEED;
8784 /* compute bitmask from p1 value */
8785 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
8787 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
8789 switch (crtc_state->dpll.p2) {
8791 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
8794 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
8797 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
8800 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
8804 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
8805 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
8807 dpll |= PLL_REF_INPUT_DREFCLK;
8809 return dpll | DPLL_VCO_ENABLE;
8812 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
8813 struct intel_crtc_state *crtc_state)
8815 struct drm_device *dev = crtc->base.dev;
8816 intel_clock_t clock, reduced_clock;
8817 u32 dpll = 0, fp = 0, fp2 = 0;
8818 bool ok, has_reduced_clock = false;
8819 bool is_lvds = false;
8820 struct intel_shared_dpll *pll;
8822 memset(&crtc_state->dpll_hw_state, 0,
8823 sizeof(crtc_state->dpll_hw_state));
8825 is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
8827 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
8828 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
8830 ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
8831 &has_reduced_clock, &reduced_clock);
8832 if (!ok && !crtc_state->clock_set) {
8833 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8836 /* Compat-code for transition, will disappear. */
8837 if (!crtc_state->clock_set) {
8838 crtc_state->dpll.n = clock.n;
8839 crtc_state->dpll.m1 = clock.m1;
8840 crtc_state->dpll.m2 = clock.m2;
8841 crtc_state->dpll.p1 = clock.p1;
8842 crtc_state->dpll.p2 = clock.p2;
8845 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
8846 if (crtc_state->has_pch_encoder) {
8847 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
8848 if (has_reduced_clock)
8849 fp2 = i9xx_dpll_compute_fp(&reduced_clock);
8851 dpll = ironlake_compute_dpll(crtc, crtc_state,
8852 &fp, &reduced_clock,
8853 has_reduced_clock ? &fp2 : NULL);
8855 crtc_state->dpll_hw_state.dpll = dpll;
8856 crtc_state->dpll_hw_state.fp0 = fp;
8857 if (has_reduced_clock)
8858 crtc_state->dpll_hw_state.fp1 = fp2;
8860 crtc_state->dpll_hw_state.fp1 = fp;
8862 pll = intel_get_shared_dpll(crtc, crtc_state);
8864 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
8865 pipe_name(crtc->pipe));
8870 if (is_lvds && has_reduced_clock)
8871 crtc->lowfreq_avail = true;
8873 crtc->lowfreq_avail = false;
8878 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
8879 struct intel_link_m_n *m_n)
8881 struct drm_device *dev = crtc->base.dev;
8882 struct drm_i915_private *dev_priv = dev->dev_private;
8883 enum pipe pipe = crtc->pipe;
8885 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
8886 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
8887 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
8889 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
8890 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
8891 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8894 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
8895 enum transcoder transcoder,
8896 struct intel_link_m_n *m_n,
8897 struct intel_link_m_n *m2_n2)
8899 struct drm_device *dev = crtc->base.dev;
8900 struct drm_i915_private *dev_priv = dev->dev_private;
8901 enum pipe pipe = crtc->pipe;
8903 if (INTEL_INFO(dev)->gen >= 5) {
8904 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
8905 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
8906 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
8908 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
8909 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
8910 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8911 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
8912 * gen < 8) and if DRRS is supported (to make sure the
8913 * registers are not unnecessarily read).
8915 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
8916 crtc->config->has_drrs) {
8917 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
8918 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
8919 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
8921 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
8922 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
8923 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8926 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
8927 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
8928 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
8930 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
8931 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
8932 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8936 void intel_dp_get_m_n(struct intel_crtc *crtc,
8937 struct intel_crtc_state *pipe_config)
8939 if (pipe_config->has_pch_encoder)
8940 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
8942 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8943 &pipe_config->dp_m_n,
8944 &pipe_config->dp_m2_n2);
8947 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
8948 struct intel_crtc_state *pipe_config)
8950 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8951 &pipe_config->fdi_m_n, NULL);
8954 static void skylake_get_pfit_config(struct intel_crtc *crtc,
8955 struct intel_crtc_state *pipe_config)
8957 struct drm_device *dev = crtc->base.dev;
8958 struct drm_i915_private *dev_priv = dev->dev_private;
8959 struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
8960 uint32_t ps_ctrl = 0;
8964 /* find scaler attached to this pipe */
8965 for (i = 0; i < crtc->num_scalers; i++) {
8966 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
8967 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
8969 pipe_config->pch_pfit.enabled = true;
8970 pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
8971 pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
8976 scaler_state->scaler_id = id;
8978 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
8980 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
8985 skylake_get_initial_plane_config(struct intel_crtc *crtc,
8986 struct intel_initial_plane_config *plane_config)
8988 struct drm_device *dev = crtc->base.dev;
8989 struct drm_i915_private *dev_priv = dev->dev_private;
8990 u32 val, base, offset, stride_mult, tiling;
8991 int pipe = crtc->pipe;
8992 int fourcc, pixel_format;
8993 unsigned int aligned_height;
8994 struct drm_framebuffer *fb;
8995 struct intel_framebuffer *intel_fb;
8997 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
8999 DRM_DEBUG_KMS("failed to alloc fb\n");
9003 fb = &intel_fb->base;
9005 val = I915_READ(PLANE_CTL(pipe, 0));
9006 if (!(val & PLANE_CTL_ENABLE))
9009 pixel_format = val & PLANE_CTL_FORMAT_MASK;
9010 fourcc = skl_format_to_fourcc(pixel_format,
9011 val & PLANE_CTL_ORDER_RGBX,
9012 val & PLANE_CTL_ALPHA_MASK);
9013 fb->pixel_format = fourcc;
9014 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9016 tiling = val & PLANE_CTL_TILED_MASK;
9018 case PLANE_CTL_TILED_LINEAR:
9019 fb->modifier[0] = DRM_FORMAT_MOD_NONE;
9021 case PLANE_CTL_TILED_X:
9022 plane_config->tiling = I915_TILING_X;
9023 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9025 case PLANE_CTL_TILED_Y:
9026 fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
9028 case PLANE_CTL_TILED_YF:
9029 fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
9032 MISSING_CASE(tiling);
9036 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
9037 plane_config->base = base;
9039 offset = I915_READ(PLANE_OFFSET(pipe, 0));
9041 val = I915_READ(PLANE_SIZE(pipe, 0));
9042 fb->height = ((val >> 16) & 0xfff) + 1;
9043 fb->width = ((val >> 0) & 0x1fff) + 1;
9045 val = I915_READ(PLANE_STRIDE(pipe, 0));
9046 stride_mult = intel_fb_stride_alignment(dev, fb->modifier[0],
9048 fb->pitches[0] = (val & 0x3ff) * stride_mult;
9050 aligned_height = intel_fb_align_height(dev, fb->height,
9054 plane_config->size = fb->pitches[0] * aligned_height;
9056 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9057 pipe_name(pipe), fb->width, fb->height,
9058 fb->bits_per_pixel, base, fb->pitches[0],
9059 plane_config->size);
9061 plane_config->fb = intel_fb;
9068 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
9069 struct intel_crtc_state *pipe_config)
9071 struct drm_device *dev = crtc->base.dev;
9072 struct drm_i915_private *dev_priv = dev->dev_private;
9075 tmp = I915_READ(PF_CTL(crtc->pipe));
9077 if (tmp & PF_ENABLE) {
9078 pipe_config->pch_pfit.enabled = true;
9079 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
9080 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
9082 /* We currently do not free assignements of panel fitters on
9083 * ivb/hsw (since we don't use the higher upscaling modes which
9084 * differentiates them) so just WARN about this case for now. */
9086 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
9087 PF_PIPE_SEL_IVB(crtc->pipe));
9093 ironlake_get_initial_plane_config(struct intel_crtc *crtc,
9094 struct intel_initial_plane_config *plane_config)
9096 struct drm_device *dev = crtc->base.dev;
9097 struct drm_i915_private *dev_priv = dev->dev_private;
9098 u32 val, base, offset;
9099 int pipe = crtc->pipe;
9100 int fourcc, pixel_format;
9101 unsigned int aligned_height;
9102 struct drm_framebuffer *fb;
9103 struct intel_framebuffer *intel_fb;
9105 val = I915_READ(DSPCNTR(pipe));
9106 if (!(val & DISPLAY_PLANE_ENABLE))
9109 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9111 DRM_DEBUG_KMS("failed to alloc fb\n");
9115 fb = &intel_fb->base;
9117 if (INTEL_INFO(dev)->gen >= 4) {
9118 if (val & DISPPLANE_TILED) {
9119 plane_config->tiling = I915_TILING_X;
9120 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9124 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
9125 fourcc = i9xx_format_to_fourcc(pixel_format);
9126 fb->pixel_format = fourcc;
9127 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9129 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
9130 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
9131 offset = I915_READ(DSPOFFSET(pipe));
9133 if (plane_config->tiling)
9134 offset = I915_READ(DSPTILEOFF(pipe));
9136 offset = I915_READ(DSPLINOFF(pipe));
9138 plane_config->base = base;
9140 val = I915_READ(PIPESRC(pipe));
9141 fb->width = ((val >> 16) & 0xfff) + 1;
9142 fb->height = ((val >> 0) & 0xfff) + 1;
9144 val = I915_READ(DSPSTRIDE(pipe));
9145 fb->pitches[0] = val & 0xffffffc0;
9147 aligned_height = intel_fb_align_height(dev, fb->height,
9151 plane_config->size = fb->pitches[0] * aligned_height;
9153 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9154 pipe_name(pipe), fb->width, fb->height,
9155 fb->bits_per_pixel, base, fb->pitches[0],
9156 plane_config->size);
9158 plane_config->fb = intel_fb;
9161 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
9162 struct intel_crtc_state *pipe_config)
9164 struct drm_device *dev = crtc->base.dev;
9165 struct drm_i915_private *dev_priv = dev->dev_private;
9168 if (!intel_display_power_is_enabled(dev_priv,
9169 POWER_DOMAIN_PIPE(crtc->pipe)))
9172 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9173 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9175 tmp = I915_READ(PIPECONF(crtc->pipe));
9176 if (!(tmp & PIPECONF_ENABLE))
9179 switch (tmp & PIPECONF_BPC_MASK) {
9181 pipe_config->pipe_bpp = 18;
9184 pipe_config->pipe_bpp = 24;
9186 case PIPECONF_10BPC:
9187 pipe_config->pipe_bpp = 30;
9189 case PIPECONF_12BPC:
9190 pipe_config->pipe_bpp = 36;
9196 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
9197 pipe_config->limited_color_range = true;
9199 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
9200 struct intel_shared_dpll *pll;
9202 pipe_config->has_pch_encoder = true;
9204 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
9205 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9206 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9208 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9210 if (HAS_PCH_IBX(dev_priv->dev)) {
9211 pipe_config->shared_dpll =
9212 (enum intel_dpll_id) crtc->pipe;
9214 tmp = I915_READ(PCH_DPLL_SEL);
9215 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
9216 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
9218 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
9221 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9223 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9224 &pipe_config->dpll_hw_state));
9226 tmp = pipe_config->dpll_hw_state.dpll;
9227 pipe_config->pixel_multiplier =
9228 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
9229 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
9231 ironlake_pch_clock_get(crtc, pipe_config);
9233 pipe_config->pixel_multiplier = 1;
9236 intel_get_pipe_timings(crtc, pipe_config);
9238 ironlake_get_pfit_config(crtc, pipe_config);
9243 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
9245 struct drm_device *dev = dev_priv->dev;
9246 struct intel_crtc *crtc;
9248 for_each_intel_crtc(dev, crtc)
9249 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
9250 pipe_name(crtc->pipe));
9252 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
9253 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
9254 I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
9255 I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
9256 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
9257 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
9258 "CPU PWM1 enabled\n");
9259 if (IS_HASWELL(dev))
9260 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
9261 "CPU PWM2 enabled\n");
9262 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
9263 "PCH PWM1 enabled\n");
9264 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
9265 "Utility pin enabled\n");
9266 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
9269 * In theory we can still leave IRQs enabled, as long as only the HPD
9270 * interrupts remain enabled. We used to check for that, but since it's
9271 * gen-specific and since we only disable LCPLL after we fully disable
9272 * the interrupts, the check below should be enough.
9274 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
9277 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
9279 struct drm_device *dev = dev_priv->dev;
9281 if (IS_HASWELL(dev))
9282 return I915_READ(D_COMP_HSW);
9284 return I915_READ(D_COMP_BDW);
9287 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
9289 struct drm_device *dev = dev_priv->dev;
9291 if (IS_HASWELL(dev)) {
9292 mutex_lock(&dev_priv->rps.hw_lock);
9293 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
9295 DRM_ERROR("Failed to write to D_COMP\n");
9296 mutex_unlock(&dev_priv->rps.hw_lock);
9298 I915_WRITE(D_COMP_BDW, val);
9299 POSTING_READ(D_COMP_BDW);
9304 * This function implements pieces of two sequences from BSpec:
9305 * - Sequence for display software to disable LCPLL
9306 * - Sequence for display software to allow package C8+
9307 * The steps implemented here are just the steps that actually touch the LCPLL
9308 * register. Callers should take care of disabling all the display engine
9309 * functions, doing the mode unset, fixing interrupts, etc.
9311 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
9312 bool switch_to_fclk, bool allow_power_down)
9316 assert_can_disable_lcpll(dev_priv);
9318 val = I915_READ(LCPLL_CTL);
9320 if (switch_to_fclk) {
9321 val |= LCPLL_CD_SOURCE_FCLK;
9322 I915_WRITE(LCPLL_CTL, val);
9324 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9325 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9326 DRM_ERROR("Switching to FCLK failed\n");
9328 val = I915_READ(LCPLL_CTL);
9331 val |= LCPLL_PLL_DISABLE;
9332 I915_WRITE(LCPLL_CTL, val);
9333 POSTING_READ(LCPLL_CTL);
9335 if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
9336 DRM_ERROR("LCPLL still locked\n");
9338 val = hsw_read_dcomp(dev_priv);
9339 val |= D_COMP_COMP_DISABLE;
9340 hsw_write_dcomp(dev_priv, val);
9343 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
9345 DRM_ERROR("D_COMP RCOMP still in progress\n");
9347 if (allow_power_down) {
9348 val = I915_READ(LCPLL_CTL);
9349 val |= LCPLL_POWER_DOWN_ALLOW;
9350 I915_WRITE(LCPLL_CTL, val);
9351 POSTING_READ(LCPLL_CTL);
9356 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
9359 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
9363 val = I915_READ(LCPLL_CTL);
9365 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
9366 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
9370 * Make sure we're not on PC8 state before disabling PC8, otherwise
9371 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
9373 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
9375 if (val & LCPLL_POWER_DOWN_ALLOW) {
9376 val &= ~LCPLL_POWER_DOWN_ALLOW;
9377 I915_WRITE(LCPLL_CTL, val);
9378 POSTING_READ(LCPLL_CTL);
9381 val = hsw_read_dcomp(dev_priv);
9382 val |= D_COMP_COMP_FORCE;
9383 val &= ~D_COMP_COMP_DISABLE;
9384 hsw_write_dcomp(dev_priv, val);
9386 val = I915_READ(LCPLL_CTL);
9387 val &= ~LCPLL_PLL_DISABLE;
9388 I915_WRITE(LCPLL_CTL, val);
9390 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
9391 DRM_ERROR("LCPLL not locked yet\n");
9393 if (val & LCPLL_CD_SOURCE_FCLK) {
9394 val = I915_READ(LCPLL_CTL);
9395 val &= ~LCPLL_CD_SOURCE_FCLK;
9396 I915_WRITE(LCPLL_CTL, val);
9398 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9399 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9400 DRM_ERROR("Switching back to LCPLL failed\n");
9403 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
9404 intel_update_cdclk(dev_priv->dev);
9408 * Package states C8 and deeper are really deep PC states that can only be
9409 * reached when all the devices on the system allow it, so even if the graphics
9410 * device allows PC8+, it doesn't mean the system will actually get to these
9411 * states. Our driver only allows PC8+ when going into runtime PM.
9413 * The requirements for PC8+ are that all the outputs are disabled, the power
9414 * well is disabled and most interrupts are disabled, and these are also
9415 * requirements for runtime PM. When these conditions are met, we manually do
9416 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
9417 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
9420 * When we really reach PC8 or deeper states (not just when we allow it) we lose
9421 * the state of some registers, so when we come back from PC8+ we need to
9422 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
9423 * need to take care of the registers kept by RC6. Notice that this happens even
9424 * if we don't put the device in PCI D3 state (which is what currently happens
9425 * because of the runtime PM support).
9427 * For more, read "Display Sequences for Package C8" on the hardware
9430 void hsw_enable_pc8(struct drm_i915_private *dev_priv)
9432 struct drm_device *dev = dev_priv->dev;
9435 DRM_DEBUG_KMS("Enabling package C8+\n");
9437 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
9438 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9439 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
9440 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9443 lpt_disable_clkout_dp(dev);
9444 hsw_disable_lcpll(dev_priv, true, true);
9447 void hsw_disable_pc8(struct drm_i915_private *dev_priv)
9449 struct drm_device *dev = dev_priv->dev;
9452 DRM_DEBUG_KMS("Disabling package C8+\n");
9454 hsw_restore_lcpll(dev_priv);
9455 lpt_init_pch_refclk(dev);
9457 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
9458 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9459 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
9460 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9463 intel_prepare_ddi(dev);
9466 static void broxton_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9468 struct drm_device *dev = old_state->dev;
9469 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9471 broxton_set_cdclk(dev, req_cdclk);
9474 /* compute the max rate for new configuration */
9475 static int ilk_max_pixel_rate(struct drm_atomic_state *state)
9477 struct intel_crtc *intel_crtc;
9478 struct intel_crtc_state *crtc_state;
9479 int max_pixel_rate = 0;
9481 for_each_intel_crtc(state->dev, intel_crtc) {
9484 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
9485 if (IS_ERR(crtc_state))
9486 return PTR_ERR(crtc_state);
9488 if (!crtc_state->base.enable)
9491 pixel_rate = ilk_pipe_pixel_rate(crtc_state);
9493 /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
9494 if (IS_BROADWELL(state->dev) && crtc_state->ips_enabled)
9495 pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95);
9497 max_pixel_rate = max(max_pixel_rate, pixel_rate);
9500 return max_pixel_rate;
9503 static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
9505 struct drm_i915_private *dev_priv = dev->dev_private;
9509 if (WARN((I915_READ(LCPLL_CTL) &
9510 (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
9511 LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
9512 LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
9513 LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
9514 "trying to change cdclk frequency with cdclk not enabled\n"))
9517 mutex_lock(&dev_priv->rps.hw_lock);
9518 ret = sandybridge_pcode_write(dev_priv,
9519 BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
9520 mutex_unlock(&dev_priv->rps.hw_lock);
9522 DRM_ERROR("failed to inform pcode about cdclk change\n");
9526 val = I915_READ(LCPLL_CTL);
9527 val |= LCPLL_CD_SOURCE_FCLK;
9528 I915_WRITE(LCPLL_CTL, val);
9530 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9531 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9532 DRM_ERROR("Switching to FCLK failed\n");
9534 val = I915_READ(LCPLL_CTL);
9535 val &= ~LCPLL_CLK_FREQ_MASK;
9539 val |= LCPLL_CLK_FREQ_450;
9543 val |= LCPLL_CLK_FREQ_54O_BDW;
9547 val |= LCPLL_CLK_FREQ_337_5_BDW;
9551 val |= LCPLL_CLK_FREQ_675_BDW;
9555 WARN(1, "invalid cdclk frequency\n");
9559 I915_WRITE(LCPLL_CTL, val);
9561 val = I915_READ(LCPLL_CTL);
9562 val &= ~LCPLL_CD_SOURCE_FCLK;
9563 I915_WRITE(LCPLL_CTL, val);
9565 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9566 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9567 DRM_ERROR("Switching back to LCPLL failed\n");
9569 mutex_lock(&dev_priv->rps.hw_lock);
9570 sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
9571 mutex_unlock(&dev_priv->rps.hw_lock);
9573 intel_update_cdclk(dev);
9575 WARN(cdclk != dev_priv->cdclk_freq,
9576 "cdclk requested %d kHz but got %d kHz\n",
9577 cdclk, dev_priv->cdclk_freq);
9580 static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state)
9582 struct drm_i915_private *dev_priv = to_i915(state->dev);
9583 int max_pixclk = ilk_max_pixel_rate(state);
9587 * FIXME should also account for plane ratio
9588 * once 64bpp pixel formats are supported.
9590 if (max_pixclk > 540000)
9592 else if (max_pixclk > 450000)
9594 else if (max_pixclk > 337500)
9600 * FIXME move the cdclk caclulation to
9601 * compute_config() so we can fail gracegully.
9603 if (cdclk > dev_priv->max_cdclk_freq) {
9604 DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
9605 cdclk, dev_priv->max_cdclk_freq);
9606 cdclk = dev_priv->max_cdclk_freq;
9609 to_intel_atomic_state(state)->cdclk = cdclk;
9614 static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9616 struct drm_device *dev = old_state->dev;
9617 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9619 broadwell_set_cdclk(dev, req_cdclk);
9622 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9623 struct intel_crtc_state *crtc_state)
9625 if (!intel_ddi_pll_select(crtc, crtc_state))
9628 crtc->lowfreq_avail = false;
9633 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9635 struct intel_crtc_state *pipe_config)
9639 pipe_config->ddi_pll_sel = SKL_DPLL0;
9640 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9643 pipe_config->ddi_pll_sel = SKL_DPLL1;
9644 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9647 pipe_config->ddi_pll_sel = SKL_DPLL2;
9648 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9651 DRM_ERROR("Incorrect port type\n");
9655 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9657 struct intel_crtc_state *pipe_config)
9659 u32 temp, dpll_ctl1;
9661 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9662 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
9664 switch (pipe_config->ddi_pll_sel) {
9667 * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
9668 * of the shared DPLL framework and thus needs to be read out
9671 dpll_ctl1 = I915_READ(DPLL_CTRL1);
9672 pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
9675 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9678 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9681 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9686 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
9688 struct intel_crtc_state *pipe_config)
9690 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
9692 switch (pipe_config->ddi_pll_sel) {
9693 case PORT_CLK_SEL_WRPLL1:
9694 pipe_config->shared_dpll = DPLL_ID_WRPLL1;
9696 case PORT_CLK_SEL_WRPLL2:
9697 pipe_config->shared_dpll = DPLL_ID_WRPLL2;
9702 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
9703 struct intel_crtc_state *pipe_config)
9705 struct drm_device *dev = crtc->base.dev;
9706 struct drm_i915_private *dev_priv = dev->dev_private;
9707 struct intel_shared_dpll *pll;
9711 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
9713 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
9715 if (IS_SKYLAKE(dev))
9716 skylake_get_ddi_pll(dev_priv, port, pipe_config);
9717 else if (IS_BROXTON(dev))
9718 bxt_get_ddi_pll(dev_priv, port, pipe_config);
9720 haswell_get_ddi_pll(dev_priv, port, pipe_config);
9722 if (pipe_config->shared_dpll >= 0) {
9723 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9725 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9726 &pipe_config->dpll_hw_state));
9730 * Haswell has only FDI/PCH transcoder A. It is which is connected to
9731 * DDI E. So just check whether this pipe is wired to DDI E and whether
9732 * the PCH transcoder is on.
9734 if (INTEL_INFO(dev)->gen < 9 &&
9735 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
9736 pipe_config->has_pch_encoder = true;
9738 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
9739 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9740 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9742 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9746 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
9747 struct intel_crtc_state *pipe_config)
9749 struct drm_device *dev = crtc->base.dev;
9750 struct drm_i915_private *dev_priv = dev->dev_private;
9751 enum intel_display_power_domain pfit_domain;
9754 if (!intel_display_power_is_enabled(dev_priv,
9755 POWER_DOMAIN_PIPE(crtc->pipe)))
9758 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9759 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9761 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
9762 if (tmp & TRANS_DDI_FUNC_ENABLE) {
9763 enum pipe trans_edp_pipe;
9764 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
9766 WARN(1, "unknown pipe linked to edp transcoder\n");
9767 case TRANS_DDI_EDP_INPUT_A_ONOFF:
9768 case TRANS_DDI_EDP_INPUT_A_ON:
9769 trans_edp_pipe = PIPE_A;
9771 case TRANS_DDI_EDP_INPUT_B_ONOFF:
9772 trans_edp_pipe = PIPE_B;
9774 case TRANS_DDI_EDP_INPUT_C_ONOFF:
9775 trans_edp_pipe = PIPE_C;
9779 if (trans_edp_pipe == crtc->pipe)
9780 pipe_config->cpu_transcoder = TRANSCODER_EDP;
9783 if (!intel_display_power_is_enabled(dev_priv,
9784 POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
9787 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
9788 if (!(tmp & PIPECONF_ENABLE))
9791 haswell_get_ddi_port_state(crtc, pipe_config);
9793 intel_get_pipe_timings(crtc, pipe_config);
9795 if (INTEL_INFO(dev)->gen >= 9) {
9796 skl_init_scalers(dev, crtc, pipe_config);
9799 pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
9801 if (INTEL_INFO(dev)->gen >= 9) {
9802 pipe_config->scaler_state.scaler_id = -1;
9803 pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
9806 if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
9807 if (INTEL_INFO(dev)->gen == 9)
9808 skylake_get_pfit_config(crtc, pipe_config);
9809 else if (INTEL_INFO(dev)->gen < 9)
9810 ironlake_get_pfit_config(crtc, pipe_config);
9812 MISSING_CASE(INTEL_INFO(dev)->gen);
9815 if (IS_HASWELL(dev))
9816 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
9817 (I915_READ(IPS_CTL) & IPS_ENABLE);
9819 if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
9820 pipe_config->pixel_multiplier =
9821 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
9823 pipe_config->pixel_multiplier = 1;
9829 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
9831 struct drm_device *dev = crtc->dev;
9832 struct drm_i915_private *dev_priv = dev->dev_private;
9833 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9834 uint32_t cntl = 0, size = 0;
9837 unsigned int width = intel_crtc->base.cursor->state->crtc_w;
9838 unsigned int height = intel_crtc->base.cursor->state->crtc_h;
9839 unsigned int stride = roundup_pow_of_two(width) * 4;
9843 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
9854 cntl |= CURSOR_ENABLE |
9855 CURSOR_GAMMA_ENABLE |
9856 CURSOR_FORMAT_ARGB |
9857 CURSOR_STRIDE(stride);
9859 size = (height << 12) | width;
9862 if (intel_crtc->cursor_cntl != 0 &&
9863 (intel_crtc->cursor_base != base ||
9864 intel_crtc->cursor_size != size ||
9865 intel_crtc->cursor_cntl != cntl)) {
9866 /* On these chipsets we can only modify the base/size/stride
9867 * whilst the cursor is disabled.
9869 I915_WRITE(_CURACNTR, 0);
9870 POSTING_READ(_CURACNTR);
9871 intel_crtc->cursor_cntl = 0;
9874 if (intel_crtc->cursor_base != base) {
9875 I915_WRITE(_CURABASE, base);
9876 intel_crtc->cursor_base = base;
9879 if (intel_crtc->cursor_size != size) {
9880 I915_WRITE(CURSIZE, size);
9881 intel_crtc->cursor_size = size;
9884 if (intel_crtc->cursor_cntl != cntl) {
9885 I915_WRITE(_CURACNTR, cntl);
9886 POSTING_READ(_CURACNTR);
9887 intel_crtc->cursor_cntl = cntl;
9891 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
9893 struct drm_device *dev = crtc->dev;
9894 struct drm_i915_private *dev_priv = dev->dev_private;
9895 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9896 int pipe = intel_crtc->pipe;
9901 cntl = MCURSOR_GAMMA_ENABLE;
9902 switch (intel_crtc->base.cursor->state->crtc_w) {
9904 cntl |= CURSOR_MODE_64_ARGB_AX;
9907 cntl |= CURSOR_MODE_128_ARGB_AX;
9910 cntl |= CURSOR_MODE_256_ARGB_AX;
9913 MISSING_CASE(intel_crtc->base.cursor->state->crtc_w);
9916 cntl |= pipe << 28; /* Connect to correct pipe */
9918 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
9919 cntl |= CURSOR_PIPE_CSC_ENABLE;
9922 if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
9923 cntl |= CURSOR_ROTATE_180;
9925 if (intel_crtc->cursor_cntl != cntl) {
9926 I915_WRITE(CURCNTR(pipe), cntl);
9927 POSTING_READ(CURCNTR(pipe));
9928 intel_crtc->cursor_cntl = cntl;
9931 /* and commit changes on next vblank */
9932 I915_WRITE(CURBASE(pipe), base);
9933 POSTING_READ(CURBASE(pipe));
9935 intel_crtc->cursor_base = base;
9938 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
9939 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
9942 struct drm_device *dev = crtc->dev;
9943 struct drm_i915_private *dev_priv = dev->dev_private;
9944 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9945 int pipe = intel_crtc->pipe;
9946 int x = crtc->cursor_x;
9947 int y = crtc->cursor_y;
9948 u32 base = 0, pos = 0;
9951 base = intel_crtc->cursor_addr;
9953 if (x >= intel_crtc->config->pipe_src_w)
9956 if (y >= intel_crtc->config->pipe_src_h)
9960 if (x + intel_crtc->base.cursor->state->crtc_w <= 0)
9963 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
9966 pos |= x << CURSOR_X_SHIFT;
9969 if (y + intel_crtc->base.cursor->state->crtc_h <= 0)
9972 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
9975 pos |= y << CURSOR_Y_SHIFT;
9977 if (base == 0 && intel_crtc->cursor_base == 0)
9980 I915_WRITE(CURPOS(pipe), pos);
9982 /* ILK+ do this automagically */
9983 if (HAS_GMCH_DISPLAY(dev) &&
9984 crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
9985 base += (intel_crtc->base.cursor->state->crtc_h *
9986 intel_crtc->base.cursor->state->crtc_w - 1) * 4;
9989 if (IS_845G(dev) || IS_I865G(dev))
9990 i845_update_cursor(crtc, base);
9992 i9xx_update_cursor(crtc, base);
9995 static bool cursor_size_ok(struct drm_device *dev,
9996 uint32_t width, uint32_t height)
9998 if (width == 0 || height == 0)
10002 * 845g/865g are special in that they are only limited by
10003 * the width of their cursors, the height is arbitrary up to
10004 * the precision of the register. Everything else requires
10005 * square cursors, limited to a few power-of-two sizes.
10007 if (IS_845G(dev) || IS_I865G(dev)) {
10008 if ((width & 63) != 0)
10011 if (width > (IS_845G(dev) ? 64 : 512))
10017 switch (width | height) {
10032 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
10033 u16 *blue, uint32_t start, uint32_t size)
10035 int end = (start + size > 256) ? 256 : start + size, i;
10036 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10038 for (i = start; i < end; i++) {
10039 intel_crtc->lut_r[i] = red[i] >> 8;
10040 intel_crtc->lut_g[i] = green[i] >> 8;
10041 intel_crtc->lut_b[i] = blue[i] >> 8;
10044 intel_crtc_load_lut(crtc);
10047 /* VESA 640x480x72Hz mode to set on the pipe */
10048 static struct drm_display_mode load_detect_mode = {
10049 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
10050 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
10053 struct drm_framebuffer *
10054 __intel_framebuffer_create(struct drm_device *dev,
10055 struct drm_mode_fb_cmd2 *mode_cmd,
10056 struct drm_i915_gem_object *obj)
10058 struct intel_framebuffer *intel_fb;
10061 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
10063 drm_gem_object_unreference(&obj->base);
10064 return ERR_PTR(-ENOMEM);
10067 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
10071 return &intel_fb->base;
10073 drm_gem_object_unreference(&obj->base);
10076 return ERR_PTR(ret);
10079 static struct drm_framebuffer *
10080 intel_framebuffer_create(struct drm_device *dev,
10081 struct drm_mode_fb_cmd2 *mode_cmd,
10082 struct drm_i915_gem_object *obj)
10084 struct drm_framebuffer *fb;
10087 ret = i915_mutex_lock_interruptible(dev);
10089 return ERR_PTR(ret);
10090 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
10091 mutex_unlock(&dev->struct_mutex);
10097 intel_framebuffer_pitch_for_width(int width, int bpp)
10099 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
10100 return ALIGN(pitch, 64);
10104 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
10106 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
10107 return PAGE_ALIGN(pitch * mode->vdisplay);
10110 static struct drm_framebuffer *
10111 intel_framebuffer_create_for_mode(struct drm_device *dev,
10112 struct drm_display_mode *mode,
10113 int depth, int bpp)
10115 struct drm_i915_gem_object *obj;
10116 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
10118 obj = i915_gem_alloc_object(dev,
10119 intel_framebuffer_size_for_mode(mode, bpp));
10121 return ERR_PTR(-ENOMEM);
10123 mode_cmd.width = mode->hdisplay;
10124 mode_cmd.height = mode->vdisplay;
10125 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
10127 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
10129 return intel_framebuffer_create(dev, &mode_cmd, obj);
10132 static struct drm_framebuffer *
10133 mode_fits_in_fbdev(struct drm_device *dev,
10134 struct drm_display_mode *mode)
10136 #ifdef CONFIG_DRM_FBDEV_EMULATION
10137 struct drm_i915_private *dev_priv = dev->dev_private;
10138 struct drm_i915_gem_object *obj;
10139 struct drm_framebuffer *fb;
10141 if (!dev_priv->fbdev)
10144 if (!dev_priv->fbdev->fb)
10147 obj = dev_priv->fbdev->fb->obj;
10150 fb = &dev_priv->fbdev->fb->base;
10151 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
10152 fb->bits_per_pixel))
10155 if (obj->base.size < mode->vdisplay * fb->pitches[0])
10164 static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
10165 struct drm_crtc *crtc,
10166 struct drm_display_mode *mode,
10167 struct drm_framebuffer *fb,
10170 struct drm_plane_state *plane_state;
10171 int hdisplay, vdisplay;
10174 plane_state = drm_atomic_get_plane_state(state, crtc->primary);
10175 if (IS_ERR(plane_state))
10176 return PTR_ERR(plane_state);
10179 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
10181 hdisplay = vdisplay = 0;
10183 ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
10186 drm_atomic_set_fb_for_plane(plane_state, fb);
10187 plane_state->crtc_x = 0;
10188 plane_state->crtc_y = 0;
10189 plane_state->crtc_w = hdisplay;
10190 plane_state->crtc_h = vdisplay;
10191 plane_state->src_x = x << 16;
10192 plane_state->src_y = y << 16;
10193 plane_state->src_w = hdisplay << 16;
10194 plane_state->src_h = vdisplay << 16;
10199 bool intel_get_load_detect_pipe(struct drm_connector *connector,
10200 struct drm_display_mode *mode,
10201 struct intel_load_detect_pipe *old,
10202 struct drm_modeset_acquire_ctx *ctx)
10204 struct intel_crtc *intel_crtc;
10205 struct intel_encoder *intel_encoder =
10206 intel_attached_encoder(connector);
10207 struct drm_crtc *possible_crtc;
10208 struct drm_encoder *encoder = &intel_encoder->base;
10209 struct drm_crtc *crtc = NULL;
10210 struct drm_device *dev = encoder->dev;
10211 struct drm_framebuffer *fb;
10212 struct drm_mode_config *config = &dev->mode_config;
10213 struct drm_atomic_state *state = NULL;
10214 struct drm_connector_state *connector_state;
10215 struct intel_crtc_state *crtc_state;
10218 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10219 connector->base.id, connector->name,
10220 encoder->base.id, encoder->name);
10223 ret = drm_modeset_lock(&config->connection_mutex, ctx);
10228 * Algorithm gets a little messy:
10230 * - if the connector already has an assigned crtc, use it (but make
10231 * sure it's on first)
10233 * - try to find the first unused crtc that can drive this connector,
10234 * and use that if we find one
10237 /* See if we already have a CRTC for this connector */
10238 if (encoder->crtc) {
10239 crtc = encoder->crtc;
10241 ret = drm_modeset_lock(&crtc->mutex, ctx);
10244 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10248 old->dpms_mode = connector->dpms;
10249 old->load_detect_temp = false;
10251 /* Make sure the crtc and connector are running */
10252 if (connector->dpms != DRM_MODE_DPMS_ON)
10253 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
10258 /* Find an unused one (if possible) */
10259 for_each_crtc(dev, possible_crtc) {
10261 if (!(encoder->possible_crtcs & (1 << i)))
10263 if (possible_crtc->state->enable)
10266 crtc = possible_crtc;
10271 * If we didn't find an unused CRTC, don't use any.
10274 DRM_DEBUG_KMS("no pipe available for load-detect\n");
10278 ret = drm_modeset_lock(&crtc->mutex, ctx);
10281 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10285 intel_crtc = to_intel_crtc(crtc);
10286 old->dpms_mode = connector->dpms;
10287 old->load_detect_temp = true;
10288 old->release_fb = NULL;
10290 state = drm_atomic_state_alloc(dev);
10294 state->acquire_ctx = ctx;
10296 connector_state = drm_atomic_get_connector_state(state, connector);
10297 if (IS_ERR(connector_state)) {
10298 ret = PTR_ERR(connector_state);
10302 connector_state->crtc = crtc;
10303 connector_state->best_encoder = &intel_encoder->base;
10305 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10306 if (IS_ERR(crtc_state)) {
10307 ret = PTR_ERR(crtc_state);
10311 crtc_state->base.active = crtc_state->base.enable = true;
10314 mode = &load_detect_mode;
10316 /* We need a framebuffer large enough to accommodate all accesses
10317 * that the plane may generate whilst we perform load detection.
10318 * We can not rely on the fbcon either being present (we get called
10319 * during its initialisation to detect all boot displays, or it may
10320 * not even exist) or that it is large enough to satisfy the
10323 fb = mode_fits_in_fbdev(dev, mode);
10325 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
10326 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
10327 old->release_fb = fb;
10329 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
10331 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
10335 ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
10339 drm_mode_copy(&crtc_state->base.mode, mode);
10341 if (drm_atomic_commit(state)) {
10342 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
10343 if (old->release_fb)
10344 old->release_fb->funcs->destroy(old->release_fb);
10347 crtc->primary->crtc = crtc;
10349 /* let the connector get through one full cycle before testing */
10350 intel_wait_for_vblank(dev, intel_crtc->pipe);
10354 drm_atomic_state_free(state);
10357 if (ret == -EDEADLK) {
10358 drm_modeset_backoff(ctx);
10365 void intel_release_load_detect_pipe(struct drm_connector *connector,
10366 struct intel_load_detect_pipe *old,
10367 struct drm_modeset_acquire_ctx *ctx)
10369 struct drm_device *dev = connector->dev;
10370 struct intel_encoder *intel_encoder =
10371 intel_attached_encoder(connector);
10372 struct drm_encoder *encoder = &intel_encoder->base;
10373 struct drm_crtc *crtc = encoder->crtc;
10374 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10375 struct drm_atomic_state *state;
10376 struct drm_connector_state *connector_state;
10377 struct intel_crtc_state *crtc_state;
10380 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10381 connector->base.id, connector->name,
10382 encoder->base.id, encoder->name);
10384 if (old->load_detect_temp) {
10385 state = drm_atomic_state_alloc(dev);
10389 state->acquire_ctx = ctx;
10391 connector_state = drm_atomic_get_connector_state(state, connector);
10392 if (IS_ERR(connector_state))
10395 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10396 if (IS_ERR(crtc_state))
10399 connector_state->best_encoder = NULL;
10400 connector_state->crtc = NULL;
10402 crtc_state->base.enable = crtc_state->base.active = false;
10404 ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL,
10409 ret = drm_atomic_commit(state);
10413 if (old->release_fb) {
10414 drm_framebuffer_unregister_private(old->release_fb);
10415 drm_framebuffer_unreference(old->release_fb);
10421 /* Switch crtc and encoder back off if necessary */
10422 if (old->dpms_mode != DRM_MODE_DPMS_ON)
10423 connector->funcs->dpms(connector, old->dpms_mode);
10427 DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
10428 drm_atomic_state_free(state);
10431 static int i9xx_pll_refclk(struct drm_device *dev,
10432 const struct intel_crtc_state *pipe_config)
10434 struct drm_i915_private *dev_priv = dev->dev_private;
10435 u32 dpll = pipe_config->dpll_hw_state.dpll;
10437 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
10438 return dev_priv->vbt.lvds_ssc_freq;
10439 else if (HAS_PCH_SPLIT(dev))
10441 else if (!IS_GEN2(dev))
10447 /* Returns the clock of the currently programmed mode of the given pipe. */
10448 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
10449 struct intel_crtc_state *pipe_config)
10451 struct drm_device *dev = crtc->base.dev;
10452 struct drm_i915_private *dev_priv = dev->dev_private;
10453 int pipe = pipe_config->cpu_transcoder;
10454 u32 dpll = pipe_config->dpll_hw_state.dpll;
10456 intel_clock_t clock;
10458 int refclk = i9xx_pll_refclk(dev, pipe_config);
10460 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
10461 fp = pipe_config->dpll_hw_state.fp0;
10463 fp = pipe_config->dpll_hw_state.fp1;
10465 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
10466 if (IS_PINEVIEW(dev)) {
10467 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10468 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
10470 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10471 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10474 if (!IS_GEN2(dev)) {
10475 if (IS_PINEVIEW(dev))
10476 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10477 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
10479 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
10480 DPLL_FPA01_P1_POST_DIV_SHIFT);
10482 switch (dpll & DPLL_MODE_MASK) {
10483 case DPLLB_MODE_DAC_SERIAL:
10484 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10487 case DPLLB_MODE_LVDS:
10488 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10492 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
10493 "mode\n", (int)(dpll & DPLL_MODE_MASK));
10497 if (IS_PINEVIEW(dev))
10498 port_clock = pnv_calc_dpll_params(refclk, &clock);
10500 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10502 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
10503 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
10506 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10507 DPLL_FPA01_P1_POST_DIV_SHIFT);
10509 if (lvds & LVDS_CLKB_POWER_UP)
10514 if (dpll & PLL_P1_DIVIDE_BY_TWO)
10517 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10518 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10520 if (dpll & PLL_P2_DIVIDE_BY_4)
10526 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10530 * This value includes pixel_multiplier. We will use
10531 * port_clock to compute adjusted_mode.crtc_clock in the
10532 * encoder's get_config() function.
10534 pipe_config->port_clock = port_clock;
10537 int intel_dotclock_calculate(int link_freq,
10538 const struct intel_link_m_n *m_n)
10541 * The calculation for the data clock is:
10542 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
10543 * But we want to avoid losing precison if possible, so:
10544 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
10546 * and the link clock is simpler:
10547 * link_clock = (m * link_clock) / n
10553 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
10556 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
10557 struct intel_crtc_state *pipe_config)
10559 struct drm_device *dev = crtc->base.dev;
10561 /* read out port_clock from the DPLL */
10562 i9xx_crtc_clock_get(crtc, pipe_config);
10565 * This value does not include pixel_multiplier.
10566 * We will check that port_clock and adjusted_mode.crtc_clock
10567 * agree once we know their relationship in the encoder's
10568 * get_config() function.
10570 pipe_config->base.adjusted_mode.crtc_clock =
10571 intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
10572 &pipe_config->fdi_m_n);
10575 /** Returns the currently programmed mode of the given pipe. */
10576 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
10577 struct drm_crtc *crtc)
10579 struct drm_i915_private *dev_priv = dev->dev_private;
10580 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10581 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
10582 struct drm_display_mode *mode;
10583 struct intel_crtc_state pipe_config;
10584 int htot = I915_READ(HTOTAL(cpu_transcoder));
10585 int hsync = I915_READ(HSYNC(cpu_transcoder));
10586 int vtot = I915_READ(VTOTAL(cpu_transcoder));
10587 int vsync = I915_READ(VSYNC(cpu_transcoder));
10588 enum pipe pipe = intel_crtc->pipe;
10590 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10595 * Construct a pipe_config sufficient for getting the clock info
10596 * back out of crtc_clock_get.
10598 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
10599 * to use a real value here instead.
10601 pipe_config.cpu_transcoder = (enum transcoder) pipe;
10602 pipe_config.pixel_multiplier = 1;
10603 pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
10604 pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
10605 pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
10606 i9xx_crtc_clock_get(intel_crtc, &pipe_config);
10608 mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
10609 mode->hdisplay = (htot & 0xffff) + 1;
10610 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
10611 mode->hsync_start = (hsync & 0xffff) + 1;
10612 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
10613 mode->vdisplay = (vtot & 0xffff) + 1;
10614 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
10615 mode->vsync_start = (vsync & 0xffff) + 1;
10616 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
10618 drm_mode_set_name(mode);
10623 void intel_mark_busy(struct drm_device *dev)
10625 struct drm_i915_private *dev_priv = dev->dev_private;
10627 if (dev_priv->mm.busy)
10630 intel_runtime_pm_get(dev_priv);
10631 i915_update_gfx_val(dev_priv);
10632 if (INTEL_INFO(dev)->gen >= 6)
10633 gen6_rps_busy(dev_priv);
10634 dev_priv->mm.busy = true;
10637 void intel_mark_idle(struct drm_device *dev)
10639 struct drm_i915_private *dev_priv = dev->dev_private;
10641 if (!dev_priv->mm.busy)
10644 dev_priv->mm.busy = false;
10646 if (INTEL_INFO(dev)->gen >= 6)
10647 gen6_rps_idle(dev->dev_private);
10649 intel_runtime_pm_put(dev_priv);
10652 static void intel_crtc_destroy(struct drm_crtc *crtc)
10654 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10655 struct drm_device *dev = crtc->dev;
10656 struct intel_unpin_work *work;
10658 spin_lock_irq(&dev->event_lock);
10659 work = intel_crtc->unpin_work;
10660 intel_crtc->unpin_work = NULL;
10661 spin_unlock_irq(&dev->event_lock);
10664 cancel_work_sync(&work->work);
10668 drm_crtc_cleanup(crtc);
10673 static void intel_unpin_work_fn(struct work_struct *__work)
10675 struct intel_unpin_work *work =
10676 container_of(__work, struct intel_unpin_work, work);
10677 struct intel_crtc *crtc = to_intel_crtc(work->crtc);
10678 struct drm_device *dev = crtc->base.dev;
10679 struct drm_plane *primary = crtc->base.primary;
10681 mutex_lock(&dev->struct_mutex);
10682 intel_unpin_fb_obj(work->old_fb, primary->state);
10683 drm_gem_object_unreference(&work->pending_flip_obj->base);
10685 if (work->flip_queued_req)
10686 i915_gem_request_assign(&work->flip_queued_req, NULL);
10687 mutex_unlock(&dev->struct_mutex);
10689 intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit);
10690 drm_framebuffer_unreference(work->old_fb);
10692 BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
10693 atomic_dec(&crtc->unpin_work_count);
10698 static void do_intel_finish_page_flip(struct drm_device *dev,
10699 struct drm_crtc *crtc)
10701 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10702 struct intel_unpin_work *work;
10703 unsigned long flags;
10705 /* Ignore early vblank irqs */
10706 if (intel_crtc == NULL)
10710 * This is called both by irq handlers and the reset code (to complete
10711 * lost pageflips) so needs the full irqsave spinlocks.
10713 spin_lock_irqsave(&dev->event_lock, flags);
10714 work = intel_crtc->unpin_work;
10716 /* Ensure we don't miss a work->pending update ... */
10719 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
10720 spin_unlock_irqrestore(&dev->event_lock, flags);
10724 page_flip_completed(intel_crtc);
10726 spin_unlock_irqrestore(&dev->event_lock, flags);
10729 void intel_finish_page_flip(struct drm_device *dev, int pipe)
10731 struct drm_i915_private *dev_priv = dev->dev_private;
10732 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
10734 do_intel_finish_page_flip(dev, crtc);
10737 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
10739 struct drm_i915_private *dev_priv = dev->dev_private;
10740 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
10742 do_intel_finish_page_flip(dev, crtc);
10745 /* Is 'a' after or equal to 'b'? */
10746 static bool g4x_flip_count_after_eq(u32 a, u32 b)
10748 return !((a - b) & 0x80000000);
10751 static bool page_flip_finished(struct intel_crtc *crtc)
10753 struct drm_device *dev = crtc->base.dev;
10754 struct drm_i915_private *dev_priv = dev->dev_private;
10756 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
10757 crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
10761 * The relevant registers doen't exist on pre-ctg.
10762 * As the flip done interrupt doesn't trigger for mmio
10763 * flips on gmch platforms, a flip count check isn't
10764 * really needed there. But since ctg has the registers,
10765 * include it in the check anyway.
10767 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
10771 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
10772 * used the same base address. In that case the mmio flip might
10773 * have completed, but the CS hasn't even executed the flip yet.
10775 * A flip count check isn't enough as the CS might have updated
10776 * the base address just after start of vblank, but before we
10777 * managed to process the interrupt. This means we'd complete the
10778 * CS flip too soon.
10780 * Combining both checks should get us a good enough result. It may
10781 * still happen that the CS flip has been executed, but has not
10782 * yet actually completed. But in case the base address is the same
10783 * anyway, we don't really care.
10785 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
10786 crtc->unpin_work->gtt_offset &&
10787 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_GM45(crtc->pipe)),
10788 crtc->unpin_work->flip_count);
10791 void intel_prepare_page_flip(struct drm_device *dev, int plane)
10793 struct drm_i915_private *dev_priv = dev->dev_private;
10794 struct intel_crtc *intel_crtc =
10795 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
10796 unsigned long flags;
10800 * This is called both by irq handlers and the reset code (to complete
10801 * lost pageflips) so needs the full irqsave spinlocks.
10803 * NB: An MMIO update of the plane base pointer will also
10804 * generate a page-flip completion irq, i.e. every modeset
10805 * is also accompanied by a spurious intel_prepare_page_flip().
10807 spin_lock_irqsave(&dev->event_lock, flags);
10808 if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
10809 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
10810 spin_unlock_irqrestore(&dev->event_lock, flags);
10813 static inline void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
10815 /* Ensure that the work item is consistent when activating it ... */
10817 atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
10818 /* and that it is marked active as soon as the irq could fire. */
10822 static int intel_gen2_queue_flip(struct drm_device *dev,
10823 struct drm_crtc *crtc,
10824 struct drm_framebuffer *fb,
10825 struct drm_i915_gem_object *obj,
10826 struct drm_i915_gem_request *req,
10829 struct intel_engine_cs *ring = req->ring;
10830 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10834 ret = intel_ring_begin(req, 6);
10838 /* Can't queue multiple flips, so wait for the previous
10839 * one to finish before executing the next.
10841 if (intel_crtc->plane)
10842 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10844 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10845 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10846 intel_ring_emit(ring, MI_NOOP);
10847 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10848 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10849 intel_ring_emit(ring, fb->pitches[0]);
10850 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10851 intel_ring_emit(ring, 0); /* aux display base address, unused */
10853 intel_mark_page_flip_active(intel_crtc);
10857 static int intel_gen3_queue_flip(struct drm_device *dev,
10858 struct drm_crtc *crtc,
10859 struct drm_framebuffer *fb,
10860 struct drm_i915_gem_object *obj,
10861 struct drm_i915_gem_request *req,
10864 struct intel_engine_cs *ring = req->ring;
10865 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10869 ret = intel_ring_begin(req, 6);
10873 if (intel_crtc->plane)
10874 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10876 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10877 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10878 intel_ring_emit(ring, MI_NOOP);
10879 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
10880 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10881 intel_ring_emit(ring, fb->pitches[0]);
10882 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10883 intel_ring_emit(ring, MI_NOOP);
10885 intel_mark_page_flip_active(intel_crtc);
10889 static int intel_gen4_queue_flip(struct drm_device *dev,
10890 struct drm_crtc *crtc,
10891 struct drm_framebuffer *fb,
10892 struct drm_i915_gem_object *obj,
10893 struct drm_i915_gem_request *req,
10896 struct intel_engine_cs *ring = req->ring;
10897 struct drm_i915_private *dev_priv = dev->dev_private;
10898 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10899 uint32_t pf, pipesrc;
10902 ret = intel_ring_begin(req, 4);
10906 /* i965+ uses the linear or tiled offsets from the
10907 * Display Registers (which do not change across a page-flip)
10908 * so we need only reprogram the base address.
10910 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10911 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10912 intel_ring_emit(ring, fb->pitches[0]);
10913 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
10916 /* XXX Enabling the panel-fitter across page-flip is so far
10917 * untested on non-native modes, so ignore it for now.
10918 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
10921 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10922 intel_ring_emit(ring, pf | pipesrc);
10924 intel_mark_page_flip_active(intel_crtc);
10928 static int intel_gen6_queue_flip(struct drm_device *dev,
10929 struct drm_crtc *crtc,
10930 struct drm_framebuffer *fb,
10931 struct drm_i915_gem_object *obj,
10932 struct drm_i915_gem_request *req,
10935 struct intel_engine_cs *ring = req->ring;
10936 struct drm_i915_private *dev_priv = dev->dev_private;
10937 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10938 uint32_t pf, pipesrc;
10941 ret = intel_ring_begin(req, 4);
10945 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10946 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10947 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
10948 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10950 /* Contrary to the suggestions in the documentation,
10951 * "Enable Panel Fitter" does not seem to be required when page
10952 * flipping with a non-native mode, and worse causes a normal
10954 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
10957 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10958 intel_ring_emit(ring, pf | pipesrc);
10960 intel_mark_page_flip_active(intel_crtc);
10964 static int intel_gen7_queue_flip(struct drm_device *dev,
10965 struct drm_crtc *crtc,
10966 struct drm_framebuffer *fb,
10967 struct drm_i915_gem_object *obj,
10968 struct drm_i915_gem_request *req,
10971 struct intel_engine_cs *ring = req->ring;
10972 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10973 uint32_t plane_bit = 0;
10976 switch (intel_crtc->plane) {
10978 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
10981 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
10984 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
10987 WARN_ONCE(1, "unknown plane in flip command\n");
10992 if (ring->id == RCS) {
10995 * On Gen 8, SRM is now taking an extra dword to accommodate
10996 * 48bits addresses, and we need a NOOP for the batch size to
11004 * BSpec MI_DISPLAY_FLIP for IVB:
11005 * "The full packet must be contained within the same cache line."
11007 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
11008 * cacheline, if we ever start emitting more commands before
11009 * the MI_DISPLAY_FLIP we may need to first emit everything else,
11010 * then do the cacheline alignment, and finally emit the
11013 ret = intel_ring_cacheline_align(req);
11017 ret = intel_ring_begin(req, len);
11021 /* Unmask the flip-done completion message. Note that the bspec says that
11022 * we should do this for both the BCS and RCS, and that we must not unmask
11023 * more than one flip event at any time (or ensure that one flip message
11024 * can be sent by waiting for flip-done prior to queueing new flips).
11025 * Experimentation says that BCS works despite DERRMR masking all
11026 * flip-done completion events and that unmasking all planes at once
11027 * for the RCS also doesn't appear to drop events. Setting the DERRMR
11028 * to zero does lead to lockups within MI_DISPLAY_FLIP.
11030 if (ring->id == RCS) {
11031 intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
11032 intel_ring_emit(ring, DERRMR);
11033 intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
11034 DERRMR_PIPEB_PRI_FLIP_DONE |
11035 DERRMR_PIPEC_PRI_FLIP_DONE));
11037 intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8(1) |
11038 MI_SRM_LRM_GLOBAL_GTT);
11040 intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) |
11041 MI_SRM_LRM_GLOBAL_GTT);
11042 intel_ring_emit(ring, DERRMR);
11043 intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
11044 if (IS_GEN8(dev)) {
11045 intel_ring_emit(ring, 0);
11046 intel_ring_emit(ring, MI_NOOP);
11050 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
11051 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
11052 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
11053 intel_ring_emit(ring, (MI_NOOP));
11055 intel_mark_page_flip_active(intel_crtc);
11059 static bool use_mmio_flip(struct intel_engine_cs *ring,
11060 struct drm_i915_gem_object *obj)
11063 * This is not being used for older platforms, because
11064 * non-availability of flip done interrupt forces us to use
11065 * CS flips. Older platforms derive flip done using some clever
11066 * tricks involving the flip_pending status bits and vblank irqs.
11067 * So using MMIO flips there would disrupt this mechanism.
11073 if (INTEL_INFO(ring->dev)->gen < 5)
11076 if (i915.use_mmio_flip < 0)
11078 else if (i915.use_mmio_flip > 0)
11080 else if (i915.enable_execlists)
11083 return ring != i915_gem_request_get_ring(obj->last_write_req);
11086 static void skl_do_mmio_flip(struct intel_crtc *intel_crtc)
11088 struct drm_device *dev = intel_crtc->base.dev;
11089 struct drm_i915_private *dev_priv = dev->dev_private;
11090 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
11091 const enum pipe pipe = intel_crtc->pipe;
11094 ctl = I915_READ(PLANE_CTL(pipe, 0));
11095 ctl &= ~PLANE_CTL_TILED_MASK;
11096 switch (fb->modifier[0]) {
11097 case DRM_FORMAT_MOD_NONE:
11099 case I915_FORMAT_MOD_X_TILED:
11100 ctl |= PLANE_CTL_TILED_X;
11102 case I915_FORMAT_MOD_Y_TILED:
11103 ctl |= PLANE_CTL_TILED_Y;
11105 case I915_FORMAT_MOD_Yf_TILED:
11106 ctl |= PLANE_CTL_TILED_YF;
11109 MISSING_CASE(fb->modifier[0]);
11113 * The stride is either expressed as a multiple of 64 bytes chunks for
11114 * linear buffers or in number of tiles for tiled buffers.
11116 stride = fb->pitches[0] /
11117 intel_fb_stride_alignment(dev, fb->modifier[0],
11121 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
11122 * PLANE_SURF updates, the update is then guaranteed to be atomic.
11124 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
11125 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
11127 I915_WRITE(PLANE_SURF(pipe, 0), intel_crtc->unpin_work->gtt_offset);
11128 POSTING_READ(PLANE_SURF(pipe, 0));
11131 static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
11133 struct drm_device *dev = intel_crtc->base.dev;
11134 struct drm_i915_private *dev_priv = dev->dev_private;
11135 struct intel_framebuffer *intel_fb =
11136 to_intel_framebuffer(intel_crtc->base.primary->fb);
11137 struct drm_i915_gem_object *obj = intel_fb->obj;
11141 reg = DSPCNTR(intel_crtc->plane);
11142 dspcntr = I915_READ(reg);
11144 if (obj->tiling_mode != I915_TILING_NONE)
11145 dspcntr |= DISPPLANE_TILED;
11147 dspcntr &= ~DISPPLANE_TILED;
11149 I915_WRITE(reg, dspcntr);
11151 I915_WRITE(DSPSURF(intel_crtc->plane),
11152 intel_crtc->unpin_work->gtt_offset);
11153 POSTING_READ(DSPSURF(intel_crtc->plane));
11158 * XXX: This is the temporary way to update the plane registers until we get
11159 * around to using the usual plane update functions for MMIO flips
11161 static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
11163 struct drm_device *dev = intel_crtc->base.dev;
11164 u32 start_vbl_count;
11166 intel_mark_page_flip_active(intel_crtc);
11168 intel_pipe_update_start(intel_crtc, &start_vbl_count);
11170 if (INTEL_INFO(dev)->gen >= 9)
11171 skl_do_mmio_flip(intel_crtc);
11173 /* use_mmio_flip() retricts MMIO flips to ilk+ */
11174 ilk_do_mmio_flip(intel_crtc);
11176 intel_pipe_update_end(intel_crtc, start_vbl_count);
11179 static void intel_mmio_flip_work_func(struct work_struct *work)
11181 struct intel_mmio_flip *mmio_flip =
11182 container_of(work, struct intel_mmio_flip, work);
11184 if (mmio_flip->req)
11185 WARN_ON(__i915_wait_request(mmio_flip->req,
11186 mmio_flip->crtc->reset_counter,
11188 &mmio_flip->i915->rps.mmioflips));
11190 intel_do_mmio_flip(mmio_flip->crtc);
11192 i915_gem_request_unreference__unlocked(mmio_flip->req);
11196 static int intel_queue_mmio_flip(struct drm_device *dev,
11197 struct drm_crtc *crtc,
11198 struct drm_framebuffer *fb,
11199 struct drm_i915_gem_object *obj,
11200 struct intel_engine_cs *ring,
11203 struct intel_mmio_flip *mmio_flip;
11205 mmio_flip = kmalloc(sizeof(*mmio_flip), GFP_KERNEL);
11206 if (mmio_flip == NULL)
11209 mmio_flip->i915 = to_i915(dev);
11210 mmio_flip->req = i915_gem_request_reference(obj->last_write_req);
11211 mmio_flip->crtc = to_intel_crtc(crtc);
11213 INIT_WORK(&mmio_flip->work, intel_mmio_flip_work_func);
11214 schedule_work(&mmio_flip->work);
11219 static int intel_default_queue_flip(struct drm_device *dev,
11220 struct drm_crtc *crtc,
11221 struct drm_framebuffer *fb,
11222 struct drm_i915_gem_object *obj,
11223 struct drm_i915_gem_request *req,
11229 static bool __intel_pageflip_stall_check(struct drm_device *dev,
11230 struct drm_crtc *crtc)
11232 struct drm_i915_private *dev_priv = dev->dev_private;
11233 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11234 struct intel_unpin_work *work = intel_crtc->unpin_work;
11237 if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
11240 if (!work->enable_stall_check)
11243 if (work->flip_ready_vblank == 0) {
11244 if (work->flip_queued_req &&
11245 !i915_gem_request_completed(work->flip_queued_req, true))
11248 work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
11251 if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
11254 /* Potential stall - if we see that the flip has happened,
11255 * assume a missed interrupt. */
11256 if (INTEL_INFO(dev)->gen >= 4)
11257 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
11259 addr = I915_READ(DSPADDR(intel_crtc->plane));
11261 /* There is a potential issue here with a false positive after a flip
11262 * to the same address. We could address this by checking for a
11263 * non-incrementing frame counter.
11265 return addr == work->gtt_offset;
11268 void intel_check_page_flip(struct drm_device *dev, int pipe)
11270 struct drm_i915_private *dev_priv = dev->dev_private;
11271 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11272 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11273 struct intel_unpin_work *work;
11275 WARN_ON(!in_interrupt());
11280 spin_lock(&dev->event_lock);
11281 work = intel_crtc->unpin_work;
11282 if (work != NULL && __intel_pageflip_stall_check(dev, crtc)) {
11283 WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
11284 work->flip_queued_vblank, drm_vblank_count(dev, pipe));
11285 page_flip_completed(intel_crtc);
11288 if (work != NULL &&
11289 drm_vblank_count(dev, pipe) - work->flip_queued_vblank > 1)
11290 intel_queue_rps_boost_for_request(dev, work->flip_queued_req);
11291 spin_unlock(&dev->event_lock);
11294 static int intel_crtc_page_flip(struct drm_crtc *crtc,
11295 struct drm_framebuffer *fb,
11296 struct drm_pending_vblank_event *event,
11297 uint32_t page_flip_flags)
11299 struct drm_device *dev = crtc->dev;
11300 struct drm_i915_private *dev_priv = dev->dev_private;
11301 struct drm_framebuffer *old_fb = crtc->primary->fb;
11302 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11303 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11304 struct drm_plane *primary = crtc->primary;
11305 enum pipe pipe = intel_crtc->pipe;
11306 struct intel_unpin_work *work;
11307 struct intel_engine_cs *ring;
11309 struct drm_i915_gem_request *request = NULL;
11313 * drm_mode_page_flip_ioctl() should already catch this, but double
11314 * check to be safe. In the future we may enable pageflipping from
11315 * a disabled primary plane.
11317 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
11320 /* Can't change pixel format via MI display flips. */
11321 if (fb->pixel_format != crtc->primary->fb->pixel_format)
11325 * TILEOFF/LINOFF registers can't be changed via MI display flips.
11326 * Note that pitch changes could also affect these register.
11328 if (INTEL_INFO(dev)->gen > 3 &&
11329 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
11330 fb->pitches[0] != crtc->primary->fb->pitches[0]))
11333 if (i915_terminally_wedged(&dev_priv->gpu_error))
11336 work = kzalloc(sizeof(*work), GFP_KERNEL);
11340 work->event = event;
11342 work->old_fb = old_fb;
11343 INIT_WORK(&work->work, intel_unpin_work_fn);
11345 ret = drm_crtc_vblank_get(crtc);
11349 /* We borrow the event spin lock for protecting unpin_work */
11350 spin_lock_irq(&dev->event_lock);
11351 if (intel_crtc->unpin_work) {
11352 /* Before declaring the flip queue wedged, check if
11353 * the hardware completed the operation behind our backs.
11355 if (__intel_pageflip_stall_check(dev, crtc)) {
11356 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
11357 page_flip_completed(intel_crtc);
11359 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
11360 spin_unlock_irq(&dev->event_lock);
11362 drm_crtc_vblank_put(crtc);
11367 intel_crtc->unpin_work = work;
11368 spin_unlock_irq(&dev->event_lock);
11370 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
11371 flush_workqueue(dev_priv->wq);
11373 /* Reference the objects for the scheduled work. */
11374 drm_framebuffer_reference(work->old_fb);
11375 drm_gem_object_reference(&obj->base);
11377 crtc->primary->fb = fb;
11378 update_state_fb(crtc->primary);
11380 work->pending_flip_obj = obj;
11382 ret = i915_mutex_lock_interruptible(dev);
11386 atomic_inc(&intel_crtc->unpin_work_count);
11387 intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
11389 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
11390 work->flip_count = I915_READ(PIPE_FLIPCOUNT_GM45(pipe)) + 1;
11392 if (IS_VALLEYVIEW(dev)) {
11393 ring = &dev_priv->ring[BCS];
11394 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
11395 /* vlv: DISPLAY_FLIP fails to change tiling */
11397 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
11398 ring = &dev_priv->ring[BCS];
11399 } else if (INTEL_INFO(dev)->gen >= 7) {
11400 ring = i915_gem_request_get_ring(obj->last_write_req);
11401 if (ring == NULL || ring->id != RCS)
11402 ring = &dev_priv->ring[BCS];
11404 ring = &dev_priv->ring[RCS];
11407 mmio_flip = use_mmio_flip(ring, obj);
11409 /* When using CS flips, we want to emit semaphores between rings.
11410 * However, when using mmio flips we will create a task to do the
11411 * synchronisation, so all we want here is to pin the framebuffer
11412 * into the display plane and skip any waits.
11414 ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
11415 crtc->primary->state,
11416 mmio_flip ? i915_gem_request_get_ring(obj->last_write_req) : ring, &request);
11418 goto cleanup_pending;
11420 work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), obj)
11421 + intel_crtc->dspaddr_offset;
11424 ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
11427 goto cleanup_unpin;
11429 i915_gem_request_assign(&work->flip_queued_req,
11430 obj->last_write_req);
11433 ret = i915_gem_request_alloc(ring, ring->default_context, &request);
11435 goto cleanup_unpin;
11438 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
11441 goto cleanup_unpin;
11443 i915_gem_request_assign(&work->flip_queued_req, request);
11447 i915_add_request_no_flush(request);
11449 work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
11450 work->enable_stall_check = true;
11452 i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
11453 to_intel_plane(primary)->frontbuffer_bit);
11454 mutex_unlock(&dev->struct_mutex);
11456 intel_fbc_disable_crtc(intel_crtc);
11457 intel_frontbuffer_flip_prepare(dev,
11458 to_intel_plane(primary)->frontbuffer_bit);
11460 trace_i915_flip_request(intel_crtc->plane, obj);
11465 intel_unpin_fb_obj(fb, crtc->primary->state);
11468 i915_gem_request_cancel(request);
11469 atomic_dec(&intel_crtc->unpin_work_count);
11470 mutex_unlock(&dev->struct_mutex);
11472 crtc->primary->fb = old_fb;
11473 update_state_fb(crtc->primary);
11475 drm_gem_object_unreference_unlocked(&obj->base);
11476 drm_framebuffer_unreference(work->old_fb);
11478 spin_lock_irq(&dev->event_lock);
11479 intel_crtc->unpin_work = NULL;
11480 spin_unlock_irq(&dev->event_lock);
11482 drm_crtc_vblank_put(crtc);
11487 struct drm_atomic_state *state;
11488 struct drm_plane_state *plane_state;
11491 state = drm_atomic_state_alloc(dev);
11494 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
11497 plane_state = drm_atomic_get_plane_state(state, primary);
11498 ret = PTR_ERR_OR_ZERO(plane_state);
11500 drm_atomic_set_fb_for_plane(plane_state, fb);
11502 ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
11504 ret = drm_atomic_commit(state);
11507 if (ret == -EDEADLK) {
11508 drm_modeset_backoff(state->acquire_ctx);
11509 drm_atomic_state_clear(state);
11514 drm_atomic_state_free(state);
11516 if (ret == 0 && event) {
11517 spin_lock_irq(&dev->event_lock);
11518 drm_send_vblank_event(dev, pipe, event);
11519 spin_unlock_irq(&dev->event_lock);
11527 * intel_wm_need_update - Check whether watermarks need updating
11528 * @plane: drm plane
11529 * @state: new plane state
11531 * Check current plane state versus the new one to determine whether
11532 * watermarks need to be recalculated.
11534 * Returns true or false.
11536 static bool intel_wm_need_update(struct drm_plane *plane,
11537 struct drm_plane_state *state)
11539 /* Update watermarks on tiling changes. */
11540 if (!plane->state->fb || !state->fb ||
11541 plane->state->fb->modifier[0] != state->fb->modifier[0] ||
11542 plane->state->rotation != state->rotation)
11545 if (plane->state->crtc_w != state->crtc_w)
11551 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
11552 struct drm_plane_state *plane_state)
11554 struct drm_crtc *crtc = crtc_state->crtc;
11555 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11556 struct drm_plane *plane = plane_state->plane;
11557 struct drm_device *dev = crtc->dev;
11558 struct drm_i915_private *dev_priv = dev->dev_private;
11559 struct intel_plane_state *old_plane_state =
11560 to_intel_plane_state(plane->state);
11561 int idx = intel_crtc->base.base.id, ret;
11562 int i = drm_plane_index(plane);
11563 bool mode_changed = needs_modeset(crtc_state);
11564 bool was_crtc_enabled = crtc->state->active;
11565 bool is_crtc_enabled = crtc_state->active;
11567 bool turn_off, turn_on, visible, was_visible;
11568 struct drm_framebuffer *fb = plane_state->fb;
11570 if (crtc_state && INTEL_INFO(dev)->gen >= 9 &&
11571 plane->type != DRM_PLANE_TYPE_CURSOR) {
11572 ret = skl_update_scaler_plane(
11573 to_intel_crtc_state(crtc_state),
11574 to_intel_plane_state(plane_state));
11580 * Disabling a plane is always okay; we just need to update
11581 * fb tracking in a special way since cleanup_fb() won't
11582 * get called by the plane helpers.
11584 if (old_plane_state->base.fb && !fb)
11585 intel_crtc->atomic.disabled_planes |= 1 << i;
11587 was_visible = old_plane_state->visible;
11588 visible = to_intel_plane_state(plane_state)->visible;
11590 if (!was_crtc_enabled && WARN_ON(was_visible))
11591 was_visible = false;
11593 if (!is_crtc_enabled && WARN_ON(visible))
11596 if (!was_visible && !visible)
11599 turn_off = was_visible && (!visible || mode_changed);
11600 turn_on = visible && (!was_visible || mode_changed);
11602 DRM_DEBUG_ATOMIC("[CRTC:%i] has [PLANE:%i] with fb %i\n", idx,
11603 plane->base.id, fb ? fb->base.id : -1);
11605 DRM_DEBUG_ATOMIC("[PLANE:%i] visible %i -> %i, off %i, on %i, ms %i\n",
11606 plane->base.id, was_visible, visible,
11607 turn_off, turn_on, mode_changed);
11610 intel_crtc->atomic.update_wm_pre = true;
11611 /* must disable cxsr around plane enable/disable */
11612 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11613 intel_crtc->atomic.disable_cxsr = true;
11614 /* to potentially re-enable cxsr */
11615 intel_crtc->atomic.wait_vblank = true;
11616 intel_crtc->atomic.update_wm_post = true;
11618 } else if (turn_off) {
11619 intel_crtc->atomic.update_wm_post = true;
11620 /* must disable cxsr around plane enable/disable */
11621 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11622 if (is_crtc_enabled)
11623 intel_crtc->atomic.wait_vblank = true;
11624 intel_crtc->atomic.disable_cxsr = true;
11626 } else if (intel_wm_need_update(plane, plane_state)) {
11627 intel_crtc->atomic.update_wm_pre = true;
11631 intel_crtc->atomic.fb_bits |=
11632 to_intel_plane(plane)->frontbuffer_bit;
11634 switch (plane->type) {
11635 case DRM_PLANE_TYPE_PRIMARY:
11636 intel_crtc->atomic.wait_for_flips = true;
11637 intel_crtc->atomic.pre_disable_primary = turn_off;
11638 intel_crtc->atomic.post_enable_primary = turn_on;
11642 * FIXME: Actually if we will still have any other
11643 * plane enabled on the pipe we could let IPS enabled
11644 * still, but for now lets consider that when we make
11645 * primary invisible by setting DSPCNTR to 0 on
11646 * update_primary_plane function IPS needs to be
11649 intel_crtc->atomic.disable_ips = true;
11651 intel_crtc->atomic.disable_fbc = true;
11655 * FBC does not work on some platforms for rotated
11656 * planes, so disable it when rotation is not 0 and
11657 * update it when rotation is set back to 0.
11659 * FIXME: This is redundant with the fbc update done in
11660 * the primary plane enable function except that that
11661 * one is done too late. We eventually need to unify
11666 INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
11667 dev_priv->fbc.crtc == intel_crtc &&
11668 plane_state->rotation != BIT(DRM_ROTATE_0))
11669 intel_crtc->atomic.disable_fbc = true;
11672 * BDW signals flip done immediately if the plane
11673 * is disabled, even if the plane enable is already
11674 * armed to occur at the next vblank :(
11676 if (turn_on && IS_BROADWELL(dev))
11677 intel_crtc->atomic.wait_vblank = true;
11679 intel_crtc->atomic.update_fbc |= visible || mode_changed;
11681 case DRM_PLANE_TYPE_CURSOR:
11683 case DRM_PLANE_TYPE_OVERLAY:
11684 if (turn_off && !mode_changed) {
11685 intel_crtc->atomic.wait_vblank = true;
11686 intel_crtc->atomic.update_sprite_watermarks |=
11693 static bool encoders_cloneable(const struct intel_encoder *a,
11694 const struct intel_encoder *b)
11696 /* masks could be asymmetric, so check both ways */
11697 return a == b || (a->cloneable & (1 << b->type) &&
11698 b->cloneable & (1 << a->type));
11701 static bool check_single_encoder_cloning(struct drm_atomic_state *state,
11702 struct intel_crtc *crtc,
11703 struct intel_encoder *encoder)
11705 struct intel_encoder *source_encoder;
11706 struct drm_connector *connector;
11707 struct drm_connector_state *connector_state;
11710 for_each_connector_in_state(state, connector, connector_state, i) {
11711 if (connector_state->crtc != &crtc->base)
11715 to_intel_encoder(connector_state->best_encoder);
11716 if (!encoders_cloneable(encoder, source_encoder))
11723 static bool check_encoder_cloning(struct drm_atomic_state *state,
11724 struct intel_crtc *crtc)
11726 struct intel_encoder *encoder;
11727 struct drm_connector *connector;
11728 struct drm_connector_state *connector_state;
11731 for_each_connector_in_state(state, connector, connector_state, i) {
11732 if (connector_state->crtc != &crtc->base)
11735 encoder = to_intel_encoder(connector_state->best_encoder);
11736 if (!check_single_encoder_cloning(state, crtc, encoder))
11743 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
11744 struct drm_crtc_state *crtc_state)
11746 struct drm_device *dev = crtc->dev;
11747 struct drm_i915_private *dev_priv = dev->dev_private;
11748 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11749 struct intel_crtc_state *pipe_config =
11750 to_intel_crtc_state(crtc_state);
11751 struct drm_atomic_state *state = crtc_state->state;
11753 bool mode_changed = needs_modeset(crtc_state);
11755 if (mode_changed && !check_encoder_cloning(state, intel_crtc)) {
11756 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
11760 if (mode_changed && !crtc_state->active)
11761 intel_crtc->atomic.update_wm_post = true;
11763 if (mode_changed && crtc_state->enable &&
11764 dev_priv->display.crtc_compute_clock &&
11765 !WARN_ON(pipe_config->shared_dpll != DPLL_ID_PRIVATE)) {
11766 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
11773 if (INTEL_INFO(dev)->gen >= 9) {
11775 ret = skl_update_scaler_crtc(pipe_config);
11778 ret = intel_atomic_setup_scalers(dev, intel_crtc,
11785 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
11786 .mode_set_base_atomic = intel_pipe_set_base_atomic,
11787 .load_lut = intel_crtc_load_lut,
11788 .atomic_begin = intel_begin_crtc_commit,
11789 .atomic_flush = intel_finish_crtc_commit,
11790 .atomic_check = intel_crtc_atomic_check,
11793 static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
11795 struct intel_connector *connector;
11797 for_each_intel_connector(dev, connector) {
11798 if (connector->base.encoder) {
11799 connector->base.state->best_encoder =
11800 connector->base.encoder;
11801 connector->base.state->crtc =
11802 connector->base.encoder->crtc;
11804 connector->base.state->best_encoder = NULL;
11805 connector->base.state->crtc = NULL;
11811 connected_sink_compute_bpp(struct intel_connector *connector,
11812 struct intel_crtc_state *pipe_config)
11814 int bpp = pipe_config->pipe_bpp;
11816 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
11817 connector->base.base.id,
11818 connector->base.name);
11820 /* Don't use an invalid EDID bpc value */
11821 if (connector->base.display_info.bpc &&
11822 connector->base.display_info.bpc * 3 < bpp) {
11823 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
11824 bpp, connector->base.display_info.bpc*3);
11825 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
11828 /* Clamp bpp to 8 on screens without EDID 1.4 */
11829 if (connector->base.display_info.bpc == 0 && bpp > 24) {
11830 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
11832 pipe_config->pipe_bpp = 24;
11837 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
11838 struct intel_crtc_state *pipe_config)
11840 struct drm_device *dev = crtc->base.dev;
11841 struct drm_atomic_state *state;
11842 struct drm_connector *connector;
11843 struct drm_connector_state *connector_state;
11846 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)))
11848 else if (INTEL_INFO(dev)->gen >= 5)
11854 pipe_config->pipe_bpp = bpp;
11856 state = pipe_config->base.state;
11858 /* Clamp display bpp to EDID value */
11859 for_each_connector_in_state(state, connector, connector_state, i) {
11860 if (connector_state->crtc != &crtc->base)
11863 connected_sink_compute_bpp(to_intel_connector(connector),
11870 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
11872 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
11873 "type: 0x%x flags: 0x%x\n",
11875 mode->crtc_hdisplay, mode->crtc_hsync_start,
11876 mode->crtc_hsync_end, mode->crtc_htotal,
11877 mode->crtc_vdisplay, mode->crtc_vsync_start,
11878 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
11881 static void intel_dump_pipe_config(struct intel_crtc *crtc,
11882 struct intel_crtc_state *pipe_config,
11883 const char *context)
11885 struct drm_device *dev = crtc->base.dev;
11886 struct drm_plane *plane;
11887 struct intel_plane *intel_plane;
11888 struct intel_plane_state *state;
11889 struct drm_framebuffer *fb;
11891 DRM_DEBUG_KMS("[CRTC:%d]%s config %p for pipe %c\n", crtc->base.base.id,
11892 context, pipe_config, pipe_name(crtc->pipe));
11894 DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
11895 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
11896 pipe_config->pipe_bpp, pipe_config->dither);
11897 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11898 pipe_config->has_pch_encoder,
11899 pipe_config->fdi_lanes,
11900 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
11901 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
11902 pipe_config->fdi_m_n.tu);
11903 DRM_DEBUG_KMS("dp: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11904 pipe_config->has_dp_encoder,
11905 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
11906 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
11907 pipe_config->dp_m_n.tu);
11909 DRM_DEBUG_KMS("dp: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
11910 pipe_config->has_dp_encoder,
11911 pipe_config->dp_m2_n2.gmch_m,
11912 pipe_config->dp_m2_n2.gmch_n,
11913 pipe_config->dp_m2_n2.link_m,
11914 pipe_config->dp_m2_n2.link_n,
11915 pipe_config->dp_m2_n2.tu);
11917 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
11918 pipe_config->has_audio,
11919 pipe_config->has_infoframe);
11921 DRM_DEBUG_KMS("requested mode:\n");
11922 drm_mode_debug_printmodeline(&pipe_config->base.mode);
11923 DRM_DEBUG_KMS("adjusted mode:\n");
11924 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
11925 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
11926 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
11927 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
11928 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
11929 DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
11931 pipe_config->scaler_state.scaler_users,
11932 pipe_config->scaler_state.scaler_id);
11933 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
11934 pipe_config->gmch_pfit.control,
11935 pipe_config->gmch_pfit.pgm_ratios,
11936 pipe_config->gmch_pfit.lvds_border_bits);
11937 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
11938 pipe_config->pch_pfit.pos,
11939 pipe_config->pch_pfit.size,
11940 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
11941 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
11942 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
11944 if (IS_BROXTON(dev)) {
11945 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
11946 "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
11947 "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
11948 pipe_config->ddi_pll_sel,
11949 pipe_config->dpll_hw_state.ebb0,
11950 pipe_config->dpll_hw_state.ebb4,
11951 pipe_config->dpll_hw_state.pll0,
11952 pipe_config->dpll_hw_state.pll1,
11953 pipe_config->dpll_hw_state.pll2,
11954 pipe_config->dpll_hw_state.pll3,
11955 pipe_config->dpll_hw_state.pll6,
11956 pipe_config->dpll_hw_state.pll8,
11957 pipe_config->dpll_hw_state.pll9,
11958 pipe_config->dpll_hw_state.pll10,
11959 pipe_config->dpll_hw_state.pcsdw12);
11960 } else if (IS_SKYLAKE(dev)) {
11961 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: "
11962 "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
11963 pipe_config->ddi_pll_sel,
11964 pipe_config->dpll_hw_state.ctrl1,
11965 pipe_config->dpll_hw_state.cfgcr1,
11966 pipe_config->dpll_hw_state.cfgcr2);
11967 } else if (HAS_DDI(dev)) {
11968 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: wrpll: 0x%x\n",
11969 pipe_config->ddi_pll_sel,
11970 pipe_config->dpll_hw_state.wrpll);
11972 DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
11973 "fp0: 0x%x, fp1: 0x%x\n",
11974 pipe_config->dpll_hw_state.dpll,
11975 pipe_config->dpll_hw_state.dpll_md,
11976 pipe_config->dpll_hw_state.fp0,
11977 pipe_config->dpll_hw_state.fp1);
11980 DRM_DEBUG_KMS("planes on this crtc\n");
11981 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
11982 intel_plane = to_intel_plane(plane);
11983 if (intel_plane->pipe != crtc->pipe)
11986 state = to_intel_plane_state(plane->state);
11987 fb = state->base.fb;
11989 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d "
11990 "disabled, scaler_id = %d\n",
11991 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
11992 plane->base.id, intel_plane->pipe,
11993 (crtc->base.primary == plane) ? 0 : intel_plane->plane + 1,
11994 drm_plane_index(plane), state->scaler_id);
11998 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d enabled",
11999 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
12000 plane->base.id, intel_plane->pipe,
12001 crtc->base.primary == plane ? 0 : intel_plane->plane + 1,
12002 drm_plane_index(plane));
12003 DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = 0x%x",
12004 fb->base.id, fb->width, fb->height, fb->pixel_format);
12005 DRM_DEBUG_KMS("\tscaler:%d src (%u, %u) %ux%u dst (%u, %u) %ux%u\n",
12007 state->src.x1 >> 16, state->src.y1 >> 16,
12008 drm_rect_width(&state->src) >> 16,
12009 drm_rect_height(&state->src) >> 16,
12010 state->dst.x1, state->dst.y1,
12011 drm_rect_width(&state->dst), drm_rect_height(&state->dst));
12015 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
12017 struct drm_device *dev = state->dev;
12018 struct intel_encoder *encoder;
12019 struct drm_connector *connector;
12020 struct drm_connector_state *connector_state;
12021 unsigned int used_ports = 0;
12025 * Walk the connector list instead of the encoder
12026 * list to detect the problem on ddi platforms
12027 * where there's just one encoder per digital port.
12029 for_each_connector_in_state(state, connector, connector_state, i) {
12030 if (!connector_state->best_encoder)
12033 encoder = to_intel_encoder(connector_state->best_encoder);
12035 WARN_ON(!connector_state->crtc);
12037 switch (encoder->type) {
12038 unsigned int port_mask;
12039 case INTEL_OUTPUT_UNKNOWN:
12040 if (WARN_ON(!HAS_DDI(dev)))
12042 case INTEL_OUTPUT_DISPLAYPORT:
12043 case INTEL_OUTPUT_HDMI:
12044 case INTEL_OUTPUT_EDP:
12045 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
12047 /* the same port mustn't appear more than once */
12048 if (used_ports & port_mask)
12051 used_ports |= port_mask;
12061 clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
12063 struct drm_crtc_state tmp_state;
12064 struct intel_crtc_scaler_state scaler_state;
12065 struct intel_dpll_hw_state dpll_hw_state;
12066 enum intel_dpll_id shared_dpll;
12067 uint32_t ddi_pll_sel;
12070 /* FIXME: before the switch to atomic started, a new pipe_config was
12071 * kzalloc'd. Code that depends on any field being zero should be
12072 * fixed, so that the crtc_state can be safely duplicated. For now,
12073 * only fields that are know to not cause problems are preserved. */
12075 tmp_state = crtc_state->base;
12076 scaler_state = crtc_state->scaler_state;
12077 shared_dpll = crtc_state->shared_dpll;
12078 dpll_hw_state = crtc_state->dpll_hw_state;
12079 ddi_pll_sel = crtc_state->ddi_pll_sel;
12080 force_thru = crtc_state->pch_pfit.force_thru;
12082 memset(crtc_state, 0, sizeof *crtc_state);
12084 crtc_state->base = tmp_state;
12085 crtc_state->scaler_state = scaler_state;
12086 crtc_state->shared_dpll = shared_dpll;
12087 crtc_state->dpll_hw_state = dpll_hw_state;
12088 crtc_state->ddi_pll_sel = ddi_pll_sel;
12089 crtc_state->pch_pfit.force_thru = force_thru;
12093 intel_modeset_pipe_config(struct drm_crtc *crtc,
12094 struct intel_crtc_state *pipe_config)
12096 struct drm_atomic_state *state = pipe_config->base.state;
12097 struct intel_encoder *encoder;
12098 struct drm_connector *connector;
12099 struct drm_connector_state *connector_state;
12100 int base_bpp, ret = -EINVAL;
12104 clear_intel_crtc_state(pipe_config);
12106 pipe_config->cpu_transcoder =
12107 (enum transcoder) to_intel_crtc(crtc)->pipe;
12110 * Sanitize sync polarity flags based on requested ones. If neither
12111 * positive or negative polarity is requested, treat this as meaning
12112 * negative polarity.
12114 if (!(pipe_config->base.adjusted_mode.flags &
12115 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
12116 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
12118 if (!(pipe_config->base.adjusted_mode.flags &
12119 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
12120 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
12122 /* Compute a starting value for pipe_config->pipe_bpp taking the source
12123 * plane pixel format and any sink constraints into account. Returns the
12124 * source plane bpp so that dithering can be selected on mismatches
12125 * after encoders and crtc also have had their say. */
12126 base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
12132 * Determine the real pipe dimensions. Note that stereo modes can
12133 * increase the actual pipe size due to the frame doubling and
12134 * insertion of additional space for blanks between the frame. This
12135 * is stored in the crtc timings. We use the requested mode to do this
12136 * computation to clearly distinguish it from the adjusted mode, which
12137 * can be changed by the connectors in the below retry loop.
12139 drm_crtc_get_hv_timing(&pipe_config->base.mode,
12140 &pipe_config->pipe_src_w,
12141 &pipe_config->pipe_src_h);
12144 /* Ensure the port clock defaults are reset when retrying. */
12145 pipe_config->port_clock = 0;
12146 pipe_config->pixel_multiplier = 1;
12148 /* Fill in default crtc timings, allow encoders to overwrite them. */
12149 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
12150 CRTC_STEREO_DOUBLE);
12152 /* Pass our mode to the connectors and the CRTC to give them a chance to
12153 * adjust it according to limitations or connector properties, and also
12154 * a chance to reject the mode entirely.
12156 for_each_connector_in_state(state, connector, connector_state, i) {
12157 if (connector_state->crtc != crtc)
12160 encoder = to_intel_encoder(connector_state->best_encoder);
12162 if (!(encoder->compute_config(encoder, pipe_config))) {
12163 DRM_DEBUG_KMS("Encoder config failure\n");
12168 /* Set default port clock if not overwritten by the encoder. Needs to be
12169 * done afterwards in case the encoder adjusts the mode. */
12170 if (!pipe_config->port_clock)
12171 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
12172 * pipe_config->pixel_multiplier;
12174 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
12176 DRM_DEBUG_KMS("CRTC fixup failed\n");
12180 if (ret == RETRY) {
12181 if (WARN(!retry, "loop in pipe configuration computation\n")) {
12186 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
12188 goto encoder_retry;
12191 /* Dithering seems to not pass-through bits correctly when it should, so
12192 * only enable it on 6bpc panels. */
12193 pipe_config->dither = pipe_config->pipe_bpp == 6*3;
12194 DRM_DEBUG_KMS("plane bpp: %i, pipe bpp: %i, dithering: %i\n",
12195 base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
12202 intel_modeset_update_crtc_state(struct drm_atomic_state *state)
12204 struct drm_crtc *crtc;
12205 struct drm_crtc_state *crtc_state;
12208 /* Double check state. */
12209 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12210 to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
12212 /* Update hwmode for vblank functions */
12213 if (crtc->state->active)
12214 crtc->hwmode = crtc->state->adjusted_mode;
12216 crtc->hwmode.crtc_clock = 0;
12220 static bool intel_fuzzy_clock_check(int clock1, int clock2)
12224 if (clock1 == clock2)
12227 if (!clock1 || !clock2)
12230 diff = abs(clock1 - clock2);
12232 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
12238 #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
12239 list_for_each_entry((intel_crtc), \
12240 &(dev)->mode_config.crtc_list, \
12242 if (mask & (1 <<(intel_crtc)->pipe))
12246 intel_compare_m_n(unsigned int m, unsigned int n,
12247 unsigned int m2, unsigned int n2,
12250 if (m == m2 && n == n2)
12253 if (exact || !m || !n || !m2 || !n2)
12256 BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
12263 } else if (m < m2) {
12270 return m == m2 && n == n2;
12274 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
12275 struct intel_link_m_n *m2_n2,
12278 if (m_n->tu == m2_n2->tu &&
12279 intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
12280 m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
12281 intel_compare_m_n(m_n->link_m, m_n->link_n,
12282 m2_n2->link_m, m2_n2->link_n, !adjust)) {
12293 intel_pipe_config_compare(struct drm_device *dev,
12294 struct intel_crtc_state *current_config,
12295 struct intel_crtc_state *pipe_config,
12300 #define INTEL_ERR_OR_DBG_KMS(fmt, ...) \
12303 DRM_ERROR(fmt, ##__VA_ARGS__); \
12305 DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \
12308 #define PIPE_CONF_CHECK_X(name) \
12309 if (current_config->name != pipe_config->name) { \
12310 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12311 "(expected 0x%08x, found 0x%08x)\n", \
12312 current_config->name, \
12313 pipe_config->name); \
12317 #define PIPE_CONF_CHECK_I(name) \
12318 if (current_config->name != pipe_config->name) { \
12319 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12320 "(expected %i, found %i)\n", \
12321 current_config->name, \
12322 pipe_config->name); \
12326 #define PIPE_CONF_CHECK_M_N(name) \
12327 if (!intel_compare_link_m_n(¤t_config->name, \
12328 &pipe_config->name,\
12330 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12331 "(expected tu %i gmch %i/%i link %i/%i, " \
12332 "found tu %i, gmch %i/%i link %i/%i)\n", \
12333 current_config->name.tu, \
12334 current_config->name.gmch_m, \
12335 current_config->name.gmch_n, \
12336 current_config->name.link_m, \
12337 current_config->name.link_n, \
12338 pipe_config->name.tu, \
12339 pipe_config->name.gmch_m, \
12340 pipe_config->name.gmch_n, \
12341 pipe_config->name.link_m, \
12342 pipe_config->name.link_n); \
12346 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \
12347 if (!intel_compare_link_m_n(¤t_config->name, \
12348 &pipe_config->name, adjust) && \
12349 !intel_compare_link_m_n(¤t_config->alt_name, \
12350 &pipe_config->name, adjust)) { \
12351 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12352 "(expected tu %i gmch %i/%i link %i/%i, " \
12353 "or tu %i gmch %i/%i link %i/%i, " \
12354 "found tu %i, gmch %i/%i link %i/%i)\n", \
12355 current_config->name.tu, \
12356 current_config->name.gmch_m, \
12357 current_config->name.gmch_n, \
12358 current_config->name.link_m, \
12359 current_config->name.link_n, \
12360 current_config->alt_name.tu, \
12361 current_config->alt_name.gmch_m, \
12362 current_config->alt_name.gmch_n, \
12363 current_config->alt_name.link_m, \
12364 current_config->alt_name.link_n, \
12365 pipe_config->name.tu, \
12366 pipe_config->name.gmch_m, \
12367 pipe_config->name.gmch_n, \
12368 pipe_config->name.link_m, \
12369 pipe_config->name.link_n); \
12373 /* This is required for BDW+ where there is only one set of registers for
12374 * switching between high and low RR.
12375 * This macro can be used whenever a comparison has to be made between one
12376 * hw state and multiple sw state variables.
12378 #define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
12379 if ((current_config->name != pipe_config->name) && \
12380 (current_config->alt_name != pipe_config->name)) { \
12381 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12382 "(expected %i or %i, found %i)\n", \
12383 current_config->name, \
12384 current_config->alt_name, \
12385 pipe_config->name); \
12389 #define PIPE_CONF_CHECK_FLAGS(name, mask) \
12390 if ((current_config->name ^ pipe_config->name) & (mask)) { \
12391 INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \
12392 "(expected %i, found %i)\n", \
12393 current_config->name & (mask), \
12394 pipe_config->name & (mask)); \
12398 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
12399 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
12400 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12401 "(expected %i, found %i)\n", \
12402 current_config->name, \
12403 pipe_config->name); \
12407 #define PIPE_CONF_QUIRK(quirk) \
12408 ((current_config->quirks | pipe_config->quirks) & (quirk))
12410 PIPE_CONF_CHECK_I(cpu_transcoder);
12412 PIPE_CONF_CHECK_I(has_pch_encoder);
12413 PIPE_CONF_CHECK_I(fdi_lanes);
12414 PIPE_CONF_CHECK_M_N(fdi_m_n);
12416 PIPE_CONF_CHECK_I(has_dp_encoder);
12418 if (INTEL_INFO(dev)->gen < 8) {
12419 PIPE_CONF_CHECK_M_N(dp_m_n);
12421 PIPE_CONF_CHECK_I(has_drrs);
12422 if (current_config->has_drrs)
12423 PIPE_CONF_CHECK_M_N(dp_m2_n2);
12425 PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
12427 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
12428 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
12429 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
12430 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
12431 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
12432 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
12434 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
12435 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
12436 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
12437 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
12438 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
12439 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
12441 PIPE_CONF_CHECK_I(pixel_multiplier);
12442 PIPE_CONF_CHECK_I(has_hdmi_sink);
12443 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
12444 IS_VALLEYVIEW(dev))
12445 PIPE_CONF_CHECK_I(limited_color_range);
12446 PIPE_CONF_CHECK_I(has_infoframe);
12448 PIPE_CONF_CHECK_I(has_audio);
12450 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12451 DRM_MODE_FLAG_INTERLACE);
12453 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
12454 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12455 DRM_MODE_FLAG_PHSYNC);
12456 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12457 DRM_MODE_FLAG_NHSYNC);
12458 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12459 DRM_MODE_FLAG_PVSYNC);
12460 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12461 DRM_MODE_FLAG_NVSYNC);
12464 PIPE_CONF_CHECK_I(pipe_src_w);
12465 PIPE_CONF_CHECK_I(pipe_src_h);
12467 PIPE_CONF_CHECK_I(gmch_pfit.control);
12468 /* pfit ratios are autocomputed by the hw on gen4+ */
12469 if (INTEL_INFO(dev)->gen < 4)
12470 PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
12471 PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits);
12473 PIPE_CONF_CHECK_I(pch_pfit.enabled);
12474 if (current_config->pch_pfit.enabled) {
12475 PIPE_CONF_CHECK_I(pch_pfit.pos);
12476 PIPE_CONF_CHECK_I(pch_pfit.size);
12479 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
12481 /* BDW+ don't expose a synchronous way to read the state */
12482 if (IS_HASWELL(dev))
12483 PIPE_CONF_CHECK_I(ips_enabled);
12485 PIPE_CONF_CHECK_I(double_wide);
12487 PIPE_CONF_CHECK_X(ddi_pll_sel);
12489 PIPE_CONF_CHECK_I(shared_dpll);
12490 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
12491 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
12492 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
12493 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
12494 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
12495 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
12496 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
12497 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
12499 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
12500 PIPE_CONF_CHECK_I(pipe_bpp);
12502 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
12503 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
12505 #undef PIPE_CONF_CHECK_X
12506 #undef PIPE_CONF_CHECK_I
12507 #undef PIPE_CONF_CHECK_I_ALT
12508 #undef PIPE_CONF_CHECK_FLAGS
12509 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
12510 #undef PIPE_CONF_QUIRK
12511 #undef INTEL_ERR_OR_DBG_KMS
12516 static void check_wm_state(struct drm_device *dev)
12518 struct drm_i915_private *dev_priv = dev->dev_private;
12519 struct skl_ddb_allocation hw_ddb, *sw_ddb;
12520 struct intel_crtc *intel_crtc;
12523 if (INTEL_INFO(dev)->gen < 9)
12526 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
12527 sw_ddb = &dev_priv->wm.skl_hw.ddb;
12529 for_each_intel_crtc(dev, intel_crtc) {
12530 struct skl_ddb_entry *hw_entry, *sw_entry;
12531 const enum pipe pipe = intel_crtc->pipe;
12533 if (!intel_crtc->active)
12537 for_each_plane(dev_priv, pipe, plane) {
12538 hw_entry = &hw_ddb.plane[pipe][plane];
12539 sw_entry = &sw_ddb->plane[pipe][plane];
12541 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12544 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
12545 "(expected (%u,%u), found (%u,%u))\n",
12546 pipe_name(pipe), plane + 1,
12547 sw_entry->start, sw_entry->end,
12548 hw_entry->start, hw_entry->end);
12552 hw_entry = &hw_ddb.cursor[pipe];
12553 sw_entry = &sw_ddb->cursor[pipe];
12555 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12558 DRM_ERROR("mismatch in DDB state pipe %c cursor "
12559 "(expected (%u,%u), found (%u,%u))\n",
12561 sw_entry->start, sw_entry->end,
12562 hw_entry->start, hw_entry->end);
12567 check_connector_state(struct drm_device *dev,
12568 struct drm_atomic_state *old_state)
12570 struct drm_connector_state *old_conn_state;
12571 struct drm_connector *connector;
12574 for_each_connector_in_state(old_state, connector, old_conn_state, i) {
12575 struct drm_encoder *encoder = connector->encoder;
12576 struct drm_connector_state *state = connector->state;
12578 /* This also checks the encoder/connector hw state with the
12579 * ->get_hw_state callbacks. */
12580 intel_connector_check_state(to_intel_connector(connector));
12582 I915_STATE_WARN(state->best_encoder != encoder,
12583 "connector's atomic encoder doesn't match legacy encoder\n");
12588 check_encoder_state(struct drm_device *dev)
12590 struct intel_encoder *encoder;
12591 struct intel_connector *connector;
12593 for_each_intel_encoder(dev, encoder) {
12594 bool enabled = false;
12597 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
12598 encoder->base.base.id,
12599 encoder->base.name);
12601 for_each_intel_connector(dev, connector) {
12602 if (connector->base.state->best_encoder != &encoder->base)
12606 I915_STATE_WARN(connector->base.state->crtc !=
12607 encoder->base.crtc,
12608 "connector's crtc doesn't match encoder crtc\n");
12611 I915_STATE_WARN(!!encoder->base.crtc != enabled,
12612 "encoder's enabled state mismatch "
12613 "(expected %i, found %i)\n",
12614 !!encoder->base.crtc, enabled);
12616 if (!encoder->base.crtc) {
12619 active = encoder->get_hw_state(encoder, &pipe);
12620 I915_STATE_WARN(active,
12621 "encoder detached but still enabled on pipe %c.\n",
12628 check_crtc_state(struct drm_device *dev, struct drm_atomic_state *old_state)
12630 struct drm_i915_private *dev_priv = dev->dev_private;
12631 struct intel_encoder *encoder;
12632 struct drm_crtc_state *old_crtc_state;
12633 struct drm_crtc *crtc;
12636 for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
12637 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12638 struct intel_crtc_state *pipe_config, *sw_config;
12641 if (!needs_modeset(crtc->state))
12644 __drm_atomic_helper_crtc_destroy_state(crtc, old_crtc_state);
12645 pipe_config = to_intel_crtc_state(old_crtc_state);
12646 memset(pipe_config, 0, sizeof(*pipe_config));
12647 pipe_config->base.crtc = crtc;
12648 pipe_config->base.state = old_state;
12650 DRM_DEBUG_KMS("[CRTC:%d]\n",
12653 active = dev_priv->display.get_pipe_config(intel_crtc,
12656 /* hw state is inconsistent with the pipe quirk */
12657 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
12658 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
12659 active = crtc->state->active;
12661 I915_STATE_WARN(crtc->state->active != active,
12662 "crtc active state doesn't match with hw state "
12663 "(expected %i, found %i)\n", crtc->state->active, active);
12665 I915_STATE_WARN(intel_crtc->active != crtc->state->active,
12666 "transitional active state does not match atomic hw state "
12667 "(expected %i, found %i)\n", crtc->state->active, intel_crtc->active);
12669 for_each_encoder_on_crtc(dev, crtc, encoder) {
12672 active = encoder->get_hw_state(encoder, &pipe);
12673 I915_STATE_WARN(active != crtc->state->active,
12674 "[ENCODER:%i] active %i with crtc active %i\n",
12675 encoder->base.base.id, active, crtc->state->active);
12677 I915_STATE_WARN(active && intel_crtc->pipe != pipe,
12678 "Encoder connected to wrong pipe %c\n",
12682 encoder->get_config(encoder, pipe_config);
12685 if (!crtc->state->active)
12688 sw_config = to_intel_crtc_state(crtc->state);
12689 if (!intel_pipe_config_compare(dev, sw_config,
12690 pipe_config, false)) {
12691 I915_STATE_WARN(1, "pipe state doesn't match!\n");
12692 intel_dump_pipe_config(intel_crtc, pipe_config,
12694 intel_dump_pipe_config(intel_crtc, sw_config,
12701 check_shared_dpll_state(struct drm_device *dev)
12703 struct drm_i915_private *dev_priv = dev->dev_private;
12704 struct intel_crtc *crtc;
12705 struct intel_dpll_hw_state dpll_hw_state;
12708 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
12709 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
12710 int enabled_crtcs = 0, active_crtcs = 0;
12713 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
12715 DRM_DEBUG_KMS("%s\n", pll->name);
12717 active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
12719 I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
12720 "more active pll users than references: %i vs %i\n",
12721 pll->active, hweight32(pll->config.crtc_mask));
12722 I915_STATE_WARN(pll->active && !pll->on,
12723 "pll in active use but not on in sw tracking\n");
12724 I915_STATE_WARN(pll->on && !pll->active,
12725 "pll in on but not on in use in sw tracking\n");
12726 I915_STATE_WARN(pll->on != active,
12727 "pll on state mismatch (expected %i, found %i)\n",
12730 for_each_intel_crtc(dev, crtc) {
12731 if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
12733 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
12736 I915_STATE_WARN(pll->active != active_crtcs,
12737 "pll active crtcs mismatch (expected %i, found %i)\n",
12738 pll->active, active_crtcs);
12739 I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
12740 "pll enabled crtcs mismatch (expected %i, found %i)\n",
12741 hweight32(pll->config.crtc_mask), enabled_crtcs);
12743 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
12744 sizeof(dpll_hw_state)),
12745 "pll hw state mismatch\n");
12750 intel_modeset_check_state(struct drm_device *dev,
12751 struct drm_atomic_state *old_state)
12753 check_wm_state(dev);
12754 check_connector_state(dev, old_state);
12755 check_encoder_state(dev);
12756 check_crtc_state(dev, old_state);
12757 check_shared_dpll_state(dev);
12760 void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
12764 * FDI already provided one idea for the dotclock.
12765 * Yell if the encoder disagrees.
12767 WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
12768 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
12769 pipe_config->base.adjusted_mode.crtc_clock, dotclock);
12772 static void update_scanline_offset(struct intel_crtc *crtc)
12774 struct drm_device *dev = crtc->base.dev;
12777 * The scanline counter increments at the leading edge of hsync.
12779 * On most platforms it starts counting from vtotal-1 on the
12780 * first active line. That means the scanline counter value is
12781 * always one less than what we would expect. Ie. just after
12782 * start of vblank, which also occurs at start of hsync (on the
12783 * last active line), the scanline counter will read vblank_start-1.
12785 * On gen2 the scanline counter starts counting from 1 instead
12786 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
12787 * to keep the value positive), instead of adding one.
12789 * On HSW+ the behaviour of the scanline counter depends on the output
12790 * type. For DP ports it behaves like most other platforms, but on HDMI
12791 * there's an extra 1 line difference. So we need to add two instead of
12792 * one to the value.
12794 if (IS_GEN2(dev)) {
12795 const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode;
12798 vtotal = mode->crtc_vtotal;
12799 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
12802 crtc->scanline_offset = vtotal - 1;
12803 } else if (HAS_DDI(dev) &&
12804 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
12805 crtc->scanline_offset = 2;
12807 crtc->scanline_offset = 1;
12810 static void intel_modeset_clear_plls(struct drm_atomic_state *state)
12812 struct drm_device *dev = state->dev;
12813 struct drm_i915_private *dev_priv = to_i915(dev);
12814 struct intel_shared_dpll_config *shared_dpll = NULL;
12815 struct intel_crtc *intel_crtc;
12816 struct intel_crtc_state *intel_crtc_state;
12817 struct drm_crtc *crtc;
12818 struct drm_crtc_state *crtc_state;
12821 if (!dev_priv->display.crtc_compute_clock)
12824 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12827 intel_crtc = to_intel_crtc(crtc);
12828 intel_crtc_state = to_intel_crtc_state(crtc_state);
12829 dpll = intel_crtc_state->shared_dpll;
12831 if (!needs_modeset(crtc_state) || dpll == DPLL_ID_PRIVATE)
12834 intel_crtc_state->shared_dpll = DPLL_ID_PRIVATE;
12837 shared_dpll = intel_atomic_get_shared_dpll_state(state);
12839 shared_dpll[dpll].crtc_mask &= ~(1 << intel_crtc->pipe);
12844 * This implements the workaround described in the "notes" section of the mode
12845 * set sequence documentation. When going from no pipes or single pipe to
12846 * multiple pipes, and planes are enabled after the pipe, we need to wait at
12847 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
12849 static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
12851 struct drm_crtc_state *crtc_state;
12852 struct intel_crtc *intel_crtc;
12853 struct drm_crtc *crtc;
12854 struct intel_crtc_state *first_crtc_state = NULL;
12855 struct intel_crtc_state *other_crtc_state = NULL;
12856 enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
12859 /* look at all crtc's that are going to be enabled in during modeset */
12860 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12861 intel_crtc = to_intel_crtc(crtc);
12863 if (!crtc_state->active || !needs_modeset(crtc_state))
12866 if (first_crtc_state) {
12867 other_crtc_state = to_intel_crtc_state(crtc_state);
12870 first_crtc_state = to_intel_crtc_state(crtc_state);
12871 first_pipe = intel_crtc->pipe;
12875 /* No workaround needed? */
12876 if (!first_crtc_state)
12879 /* w/a possibly needed, check how many crtc's are already enabled. */
12880 for_each_intel_crtc(state->dev, intel_crtc) {
12881 struct intel_crtc_state *pipe_config;
12883 pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
12884 if (IS_ERR(pipe_config))
12885 return PTR_ERR(pipe_config);
12887 pipe_config->hsw_workaround_pipe = INVALID_PIPE;
12889 if (!pipe_config->base.active ||
12890 needs_modeset(&pipe_config->base))
12893 /* 2 or more enabled crtcs means no need for w/a */
12894 if (enabled_pipe != INVALID_PIPE)
12897 enabled_pipe = intel_crtc->pipe;
12900 if (enabled_pipe != INVALID_PIPE)
12901 first_crtc_state->hsw_workaround_pipe = enabled_pipe;
12902 else if (other_crtc_state)
12903 other_crtc_state->hsw_workaround_pipe = first_pipe;
12908 static int intel_modeset_all_pipes(struct drm_atomic_state *state)
12910 struct drm_crtc *crtc;
12911 struct drm_crtc_state *crtc_state;
12914 /* add all active pipes to the state */
12915 for_each_crtc(state->dev, crtc) {
12916 crtc_state = drm_atomic_get_crtc_state(state, crtc);
12917 if (IS_ERR(crtc_state))
12918 return PTR_ERR(crtc_state);
12920 if (!crtc_state->active || needs_modeset(crtc_state))
12923 crtc_state->mode_changed = true;
12925 ret = drm_atomic_add_affected_connectors(state, crtc);
12929 ret = drm_atomic_add_affected_planes(state, crtc);
12938 static int intel_modeset_checks(struct drm_atomic_state *state)
12940 struct drm_device *dev = state->dev;
12941 struct drm_i915_private *dev_priv = dev->dev_private;
12944 if (!check_digital_port_conflicts(state)) {
12945 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
12950 * See if the config requires any additional preparation, e.g.
12951 * to adjust global state with pipes off. We need to do this
12952 * here so we can get the modeset_pipe updated config for the new
12953 * mode set on this crtc. For other crtcs we need to use the
12954 * adjusted_mode bits in the crtc directly.
12956 if (dev_priv->display.modeset_calc_cdclk) {
12957 unsigned int cdclk;
12959 ret = dev_priv->display.modeset_calc_cdclk(state);
12961 cdclk = to_intel_atomic_state(state)->cdclk;
12962 if (!ret && cdclk != dev_priv->cdclk_freq)
12963 ret = intel_modeset_all_pipes(state);
12968 to_intel_atomic_state(state)->cdclk = dev_priv->cdclk_freq;
12970 intel_modeset_clear_plls(state);
12972 if (IS_HASWELL(dev))
12973 return haswell_mode_set_planes_workaround(state);
12979 * intel_atomic_check - validate state object
12981 * @state: state to validate
12983 static int intel_atomic_check(struct drm_device *dev,
12984 struct drm_atomic_state *state)
12986 struct drm_crtc *crtc;
12987 struct drm_crtc_state *crtc_state;
12989 bool any_ms = false;
12991 ret = drm_atomic_helper_check_modeset(dev, state);
12995 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12996 struct intel_crtc_state *pipe_config =
12997 to_intel_crtc_state(crtc_state);
12999 /* Catch I915_MODE_FLAG_INHERITED */
13000 if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
13001 crtc_state->mode_changed = true;
13003 if (!crtc_state->enable) {
13004 if (needs_modeset(crtc_state))
13009 if (!needs_modeset(crtc_state))
13012 /* FIXME: For only active_changed we shouldn't need to do any
13013 * state recomputation at all. */
13015 ret = drm_atomic_add_affected_connectors(state, crtc);
13019 ret = intel_modeset_pipe_config(crtc, pipe_config);
13023 if (i915.fastboot &&
13024 intel_pipe_config_compare(state->dev,
13025 to_intel_crtc_state(crtc->state),
13026 pipe_config, true)) {
13027 crtc_state->mode_changed = false;
13030 if (needs_modeset(crtc_state)) {
13033 ret = drm_atomic_add_affected_planes(state, crtc);
13038 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
13039 needs_modeset(crtc_state) ?
13040 "[modeset]" : "[fastset]");
13044 ret = intel_modeset_checks(state);
13049 to_intel_atomic_state(state)->cdclk =
13050 to_i915(state->dev)->cdclk_freq;
13052 return drm_atomic_helper_check_planes(state->dev, state);
13056 * intel_atomic_commit - commit validated state object
13058 * @state: the top-level driver state object
13059 * @async: asynchronous commit
13061 * This function commits a top-level state object that has been validated
13062 * with drm_atomic_helper_check().
13064 * FIXME: Atomic modeset support for i915 is not yet complete. At the moment
13065 * we can only handle plane-related operations and do not yet support
13066 * asynchronous commit.
13069 * Zero for success or -errno.
13071 static int intel_atomic_commit(struct drm_device *dev,
13072 struct drm_atomic_state *state,
13075 struct drm_i915_private *dev_priv = dev->dev_private;
13076 struct drm_crtc *crtc;
13077 struct drm_crtc_state *crtc_state;
13080 bool any_ms = false;
13083 DRM_DEBUG_KMS("i915 does not yet support async commit\n");
13087 ret = drm_atomic_helper_prepare_planes(dev, state);
13091 drm_atomic_helper_swap_state(dev, state);
13093 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13094 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13096 if (!needs_modeset(crtc->state))
13100 intel_pre_plane_update(intel_crtc);
13102 if (crtc_state->active) {
13103 intel_crtc_disable_planes(crtc, crtc_state->plane_mask);
13104 dev_priv->display.crtc_disable(crtc);
13105 intel_crtc->active = false;
13106 intel_disable_shared_dpll(intel_crtc);
13110 /* Only after disabling all output pipelines that will be changed can we
13111 * update the the output configuration. */
13112 intel_modeset_update_crtc_state(state);
13115 intel_shared_dpll_commit(state);
13117 drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
13118 modeset_update_crtc_power_domains(state);
13121 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
13122 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13123 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13124 bool modeset = needs_modeset(crtc->state);
13126 if (modeset && crtc->state->active) {
13127 update_scanline_offset(to_intel_crtc(crtc));
13128 dev_priv->display.crtc_enable(crtc);
13132 intel_pre_plane_update(intel_crtc);
13134 drm_atomic_helper_commit_planes_on_crtc(crtc_state);
13135 intel_post_plane_update(intel_crtc);
13138 /* FIXME: add subpixel order */
13140 drm_atomic_helper_wait_for_vblanks(dev, state);
13141 drm_atomic_helper_cleanup_planes(dev, state);
13144 intel_modeset_check_state(dev, state);
13146 drm_atomic_state_free(state);
13151 void intel_crtc_restore_mode(struct drm_crtc *crtc)
13153 struct drm_device *dev = crtc->dev;
13154 struct drm_atomic_state *state;
13155 struct drm_crtc_state *crtc_state;
13158 state = drm_atomic_state_alloc(dev);
13160 DRM_DEBUG_KMS("[CRTC:%d] crtc restore failed, out of memory",
13165 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
13168 crtc_state = drm_atomic_get_crtc_state(state, crtc);
13169 ret = PTR_ERR_OR_ZERO(crtc_state);
13171 if (!crtc_state->active)
13174 crtc_state->mode_changed = true;
13175 ret = drm_atomic_commit(state);
13178 if (ret == -EDEADLK) {
13179 drm_atomic_state_clear(state);
13180 drm_modeset_backoff(state->acquire_ctx);
13186 drm_atomic_state_free(state);
13189 #undef for_each_intel_crtc_masked
13191 static const struct drm_crtc_funcs intel_crtc_funcs = {
13192 .gamma_set = intel_crtc_gamma_set,
13193 .set_config = drm_atomic_helper_set_config,
13194 .destroy = intel_crtc_destroy,
13195 .page_flip = intel_crtc_page_flip,
13196 .atomic_duplicate_state = intel_crtc_duplicate_state,
13197 .atomic_destroy_state = intel_crtc_destroy_state,
13200 static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
13201 struct intel_shared_dpll *pll,
13202 struct intel_dpll_hw_state *hw_state)
13206 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
13209 val = I915_READ(PCH_DPLL(pll->id));
13210 hw_state->dpll = val;
13211 hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
13212 hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
13214 return val & DPLL_VCO_ENABLE;
13217 static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
13218 struct intel_shared_dpll *pll)
13220 I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
13221 I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
13224 static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
13225 struct intel_shared_dpll *pll)
13227 /* PCH refclock must be enabled first */
13228 ibx_assert_pch_refclk_enabled(dev_priv);
13230 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13232 /* Wait for the clocks to stabilize. */
13233 POSTING_READ(PCH_DPLL(pll->id));
13236 /* The pixel multiplier can only be updated once the
13237 * DPLL is enabled and the clocks are stable.
13239 * So write it again.
13241 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13242 POSTING_READ(PCH_DPLL(pll->id));
13246 static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
13247 struct intel_shared_dpll *pll)
13249 struct drm_device *dev = dev_priv->dev;
13250 struct intel_crtc *crtc;
13252 /* Make sure no transcoder isn't still depending on us. */
13253 for_each_intel_crtc(dev, crtc) {
13254 if (intel_crtc_to_shared_dpll(crtc) == pll)
13255 assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
13258 I915_WRITE(PCH_DPLL(pll->id), 0);
13259 POSTING_READ(PCH_DPLL(pll->id));
13263 static char *ibx_pch_dpll_names[] = {
13268 static void ibx_pch_dpll_init(struct drm_device *dev)
13270 struct drm_i915_private *dev_priv = dev->dev_private;
13273 dev_priv->num_shared_dpll = 2;
13275 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
13276 dev_priv->shared_dplls[i].id = i;
13277 dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
13278 dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
13279 dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
13280 dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
13281 dev_priv->shared_dplls[i].get_hw_state =
13282 ibx_pch_dpll_get_hw_state;
13286 static void intel_shared_dpll_init(struct drm_device *dev)
13288 struct drm_i915_private *dev_priv = dev->dev_private;
13290 intel_update_cdclk(dev);
13293 intel_ddi_pll_init(dev);
13294 else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
13295 ibx_pch_dpll_init(dev);
13297 dev_priv->num_shared_dpll = 0;
13299 BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
13303 * intel_prepare_plane_fb - Prepare fb for usage on plane
13304 * @plane: drm plane to prepare for
13305 * @fb: framebuffer to prepare for presentation
13307 * Prepares a framebuffer for usage on a display plane. Generally this
13308 * involves pinning the underlying object and updating the frontbuffer tracking
13309 * bits. Some older platforms need special physical address handling for
13312 * Returns 0 on success, negative error code on failure.
13315 intel_prepare_plane_fb(struct drm_plane *plane,
13316 struct drm_framebuffer *fb,
13317 const struct drm_plane_state *new_state)
13319 struct drm_device *dev = plane->dev;
13320 struct intel_plane *intel_plane = to_intel_plane(plane);
13321 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13322 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
13328 mutex_lock(&dev->struct_mutex);
13330 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
13331 INTEL_INFO(dev)->cursor_needs_physical) {
13332 int align = IS_I830(dev) ? 16 * 1024 : 256;
13333 ret = i915_gem_object_attach_phys(obj, align);
13335 DRM_DEBUG_KMS("failed to attach phys object\n");
13337 ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL, NULL);
13341 i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
13343 mutex_unlock(&dev->struct_mutex);
13349 * intel_cleanup_plane_fb - Cleans up an fb after plane use
13350 * @plane: drm plane to clean up for
13351 * @fb: old framebuffer that was on plane
13353 * Cleans up a framebuffer that has just been removed from a plane.
13356 intel_cleanup_plane_fb(struct drm_plane *plane,
13357 struct drm_framebuffer *fb,
13358 const struct drm_plane_state *old_state)
13360 struct drm_device *dev = plane->dev;
13361 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13366 if (plane->type != DRM_PLANE_TYPE_CURSOR ||
13367 !INTEL_INFO(dev)->cursor_needs_physical) {
13368 mutex_lock(&dev->struct_mutex);
13369 intel_unpin_fb_obj(fb, old_state);
13370 mutex_unlock(&dev->struct_mutex);
13375 skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
13378 struct drm_device *dev;
13379 struct drm_i915_private *dev_priv;
13380 int crtc_clock, cdclk;
13382 if (!intel_crtc || !crtc_state)
13383 return DRM_PLANE_HELPER_NO_SCALING;
13385 dev = intel_crtc->base.dev;
13386 dev_priv = dev->dev_private;
13387 crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
13388 cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk;
13390 if (!crtc_clock || !cdclk)
13391 return DRM_PLANE_HELPER_NO_SCALING;
13394 * skl max scale is lower of:
13395 * close to 3 but not 3, -1 is for that purpose
13399 max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
13405 intel_check_primary_plane(struct drm_plane *plane,
13406 struct intel_crtc_state *crtc_state,
13407 struct intel_plane_state *state)
13409 struct drm_crtc *crtc = state->base.crtc;
13410 struct drm_framebuffer *fb = state->base.fb;
13411 int min_scale = DRM_PLANE_HELPER_NO_SCALING;
13412 int max_scale = DRM_PLANE_HELPER_NO_SCALING;
13413 bool can_position = false;
13415 /* use scaler when colorkey is not required */
13416 if (INTEL_INFO(plane->dev)->gen >= 9 &&
13417 state->ckey.flags == I915_SET_COLORKEY_NONE) {
13419 max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
13420 can_position = true;
13423 return drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13424 &state->dst, &state->clip,
13425 min_scale, max_scale,
13426 can_position, true,
13431 intel_commit_primary_plane(struct drm_plane *plane,
13432 struct intel_plane_state *state)
13434 struct drm_crtc *crtc = state->base.crtc;
13435 struct drm_framebuffer *fb = state->base.fb;
13436 struct drm_device *dev = plane->dev;
13437 struct drm_i915_private *dev_priv = dev->dev_private;
13438 struct intel_crtc *intel_crtc;
13439 struct drm_rect *src = &state->src;
13441 crtc = crtc ? crtc : plane->crtc;
13442 intel_crtc = to_intel_crtc(crtc);
13445 crtc->x = src->x1 >> 16;
13446 crtc->y = src->y1 >> 16;
13448 if (!crtc->state->active)
13451 if (state->visible)
13452 /* FIXME: kill this fastboot hack */
13453 intel_update_pipe_size(intel_crtc);
13455 dev_priv->display.update_primary_plane(crtc, fb, crtc->x, crtc->y);
13459 intel_disable_primary_plane(struct drm_plane *plane,
13460 struct drm_crtc *crtc)
13462 struct drm_device *dev = plane->dev;
13463 struct drm_i915_private *dev_priv = dev->dev_private;
13465 dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
13468 static void intel_begin_crtc_commit(struct drm_crtc *crtc,
13469 struct drm_crtc_state *old_crtc_state)
13471 struct drm_device *dev = crtc->dev;
13472 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13474 if (intel_crtc->atomic.update_wm_pre)
13475 intel_update_watermarks(crtc);
13477 /* Perform vblank evasion around commit operation */
13478 if (crtc->state->active)
13479 intel_pipe_update_start(intel_crtc, &intel_crtc->start_vbl_count);
13481 if (!needs_modeset(crtc->state) && INTEL_INFO(dev)->gen >= 9)
13482 skl_detach_scalers(intel_crtc);
13485 static void intel_finish_crtc_commit(struct drm_crtc *crtc,
13486 struct drm_crtc_state *old_crtc_state)
13488 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13490 if (crtc->state->active)
13491 intel_pipe_update_end(intel_crtc, intel_crtc->start_vbl_count);
13495 * intel_plane_destroy - destroy a plane
13496 * @plane: plane to destroy
13498 * Common destruction function for all types of planes (primary, cursor,
13501 void intel_plane_destroy(struct drm_plane *plane)
13503 struct intel_plane *intel_plane = to_intel_plane(plane);
13504 drm_plane_cleanup(plane);
13505 kfree(intel_plane);
13508 const struct drm_plane_funcs intel_plane_funcs = {
13509 .update_plane = drm_atomic_helper_update_plane,
13510 .disable_plane = drm_atomic_helper_disable_plane,
13511 .destroy = intel_plane_destroy,
13512 .set_property = drm_atomic_helper_plane_set_property,
13513 .atomic_get_property = intel_plane_atomic_get_property,
13514 .atomic_set_property = intel_plane_atomic_set_property,
13515 .atomic_duplicate_state = intel_plane_duplicate_state,
13516 .atomic_destroy_state = intel_plane_destroy_state,
13520 static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
13523 struct intel_plane *primary;
13524 struct intel_plane_state *state;
13525 const uint32_t *intel_primary_formats;
13526 unsigned int num_formats;
13528 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
13529 if (primary == NULL)
13532 state = intel_create_plane_state(&primary->base);
13537 primary->base.state = &state->base;
13539 primary->can_scale = false;
13540 primary->max_downscale = 1;
13541 if (INTEL_INFO(dev)->gen >= 9) {
13542 primary->can_scale = true;
13543 state->scaler_id = -1;
13545 primary->pipe = pipe;
13546 primary->plane = pipe;
13547 primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
13548 primary->check_plane = intel_check_primary_plane;
13549 primary->commit_plane = intel_commit_primary_plane;
13550 primary->disable_plane = intel_disable_primary_plane;
13551 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
13552 primary->plane = !pipe;
13554 if (INTEL_INFO(dev)->gen >= 9) {
13555 intel_primary_formats = skl_primary_formats;
13556 num_formats = ARRAY_SIZE(skl_primary_formats);
13557 } else if (INTEL_INFO(dev)->gen >= 4) {
13558 intel_primary_formats = i965_primary_formats;
13559 num_formats = ARRAY_SIZE(i965_primary_formats);
13561 intel_primary_formats = i8xx_primary_formats;
13562 num_formats = ARRAY_SIZE(i8xx_primary_formats);
13565 drm_universal_plane_init(dev, &primary->base, 0,
13566 &intel_plane_funcs,
13567 intel_primary_formats, num_formats,
13568 DRM_PLANE_TYPE_PRIMARY);
13570 if (INTEL_INFO(dev)->gen >= 4)
13571 intel_create_rotation_property(dev, primary);
13573 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
13575 return &primary->base;
13578 void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
13580 if (!dev->mode_config.rotation_property) {
13581 unsigned long flags = BIT(DRM_ROTATE_0) |
13582 BIT(DRM_ROTATE_180);
13584 if (INTEL_INFO(dev)->gen >= 9)
13585 flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
13587 dev->mode_config.rotation_property =
13588 drm_mode_create_rotation_property(dev, flags);
13590 if (dev->mode_config.rotation_property)
13591 drm_object_attach_property(&plane->base.base,
13592 dev->mode_config.rotation_property,
13593 plane->base.state->rotation);
13597 intel_check_cursor_plane(struct drm_plane *plane,
13598 struct intel_crtc_state *crtc_state,
13599 struct intel_plane_state *state)
13601 struct drm_crtc *crtc = crtc_state->base.crtc;
13602 struct drm_framebuffer *fb = state->base.fb;
13603 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13607 ret = drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13608 &state->dst, &state->clip,
13609 DRM_PLANE_HELPER_NO_SCALING,
13610 DRM_PLANE_HELPER_NO_SCALING,
13611 true, true, &state->visible);
13615 /* if we want to turn off the cursor ignore width and height */
13619 /* Check for which cursor types we support */
13620 if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) {
13621 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
13622 state->base.crtc_w, state->base.crtc_h);
13626 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
13627 if (obj->base.size < stride * state->base.crtc_h) {
13628 DRM_DEBUG_KMS("buffer is too small\n");
13632 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
13633 DRM_DEBUG_KMS("cursor cannot be tiled\n");
13641 intel_disable_cursor_plane(struct drm_plane *plane,
13642 struct drm_crtc *crtc)
13644 intel_crtc_update_cursor(crtc, false);
13648 intel_commit_cursor_plane(struct drm_plane *plane,
13649 struct intel_plane_state *state)
13651 struct drm_crtc *crtc = state->base.crtc;
13652 struct drm_device *dev = plane->dev;
13653 struct intel_crtc *intel_crtc;
13654 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
13657 crtc = crtc ? crtc : plane->crtc;
13658 intel_crtc = to_intel_crtc(crtc);
13660 plane->fb = state->base.fb;
13661 crtc->cursor_x = state->base.crtc_x;
13662 crtc->cursor_y = state->base.crtc_y;
13664 if (intel_crtc->cursor_bo == obj)
13669 else if (!INTEL_INFO(dev)->cursor_needs_physical)
13670 addr = i915_gem_obj_ggtt_offset(obj);
13672 addr = obj->phys_handle->busaddr;
13674 intel_crtc->cursor_addr = addr;
13675 intel_crtc->cursor_bo = obj;
13678 if (crtc->state->active)
13679 intel_crtc_update_cursor(crtc, state->visible);
13682 static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
13685 struct intel_plane *cursor;
13686 struct intel_plane_state *state;
13688 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
13689 if (cursor == NULL)
13692 state = intel_create_plane_state(&cursor->base);
13697 cursor->base.state = &state->base;
13699 cursor->can_scale = false;
13700 cursor->max_downscale = 1;
13701 cursor->pipe = pipe;
13702 cursor->plane = pipe;
13703 cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
13704 cursor->check_plane = intel_check_cursor_plane;
13705 cursor->commit_plane = intel_commit_cursor_plane;
13706 cursor->disable_plane = intel_disable_cursor_plane;
13708 drm_universal_plane_init(dev, &cursor->base, 0,
13709 &intel_plane_funcs,
13710 intel_cursor_formats,
13711 ARRAY_SIZE(intel_cursor_formats),
13712 DRM_PLANE_TYPE_CURSOR);
13714 if (INTEL_INFO(dev)->gen >= 4) {
13715 if (!dev->mode_config.rotation_property)
13716 dev->mode_config.rotation_property =
13717 drm_mode_create_rotation_property(dev,
13718 BIT(DRM_ROTATE_0) |
13719 BIT(DRM_ROTATE_180));
13720 if (dev->mode_config.rotation_property)
13721 drm_object_attach_property(&cursor->base.base,
13722 dev->mode_config.rotation_property,
13723 state->base.rotation);
13726 if (INTEL_INFO(dev)->gen >=9)
13727 state->scaler_id = -1;
13729 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
13731 return &cursor->base;
13734 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
13735 struct intel_crtc_state *crtc_state)
13738 struct intel_scaler *intel_scaler;
13739 struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
13741 for (i = 0; i < intel_crtc->num_scalers; i++) {
13742 intel_scaler = &scaler_state->scalers[i];
13743 intel_scaler->in_use = 0;
13744 intel_scaler->mode = PS_SCALER_MODE_DYN;
13747 scaler_state->scaler_id = -1;
13750 static void intel_crtc_init(struct drm_device *dev, int pipe)
13752 struct drm_i915_private *dev_priv = dev->dev_private;
13753 struct intel_crtc *intel_crtc;
13754 struct intel_crtc_state *crtc_state = NULL;
13755 struct drm_plane *primary = NULL;
13756 struct drm_plane *cursor = NULL;
13759 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
13760 if (intel_crtc == NULL)
13763 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
13766 intel_crtc->config = crtc_state;
13767 intel_crtc->base.state = &crtc_state->base;
13768 crtc_state->base.crtc = &intel_crtc->base;
13770 /* initialize shared scalers */
13771 if (INTEL_INFO(dev)->gen >= 9) {
13772 if (pipe == PIPE_C)
13773 intel_crtc->num_scalers = 1;
13775 intel_crtc->num_scalers = SKL_NUM_SCALERS;
13777 skl_init_scalers(dev, intel_crtc, crtc_state);
13780 primary = intel_primary_plane_create(dev, pipe);
13784 cursor = intel_cursor_plane_create(dev, pipe);
13788 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
13789 cursor, &intel_crtc_funcs);
13793 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
13794 for (i = 0; i < 256; i++) {
13795 intel_crtc->lut_r[i] = i;
13796 intel_crtc->lut_g[i] = i;
13797 intel_crtc->lut_b[i] = i;
13801 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
13802 * is hooked to pipe B. Hence we want plane A feeding pipe B.
13804 intel_crtc->pipe = pipe;
13805 intel_crtc->plane = pipe;
13806 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
13807 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
13808 intel_crtc->plane = !pipe;
13811 intel_crtc->cursor_base = ~0;
13812 intel_crtc->cursor_cntl = ~0;
13813 intel_crtc->cursor_size = ~0;
13815 intel_crtc->wm.cxsr_allowed = true;
13817 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
13818 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
13819 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
13820 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
13822 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
13824 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
13829 drm_plane_cleanup(primary);
13831 drm_plane_cleanup(cursor);
13836 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
13838 struct drm_encoder *encoder = connector->base.encoder;
13839 struct drm_device *dev = connector->base.dev;
13841 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
13843 if (!encoder || WARN_ON(!encoder->crtc))
13844 return INVALID_PIPE;
13846 return to_intel_crtc(encoder->crtc)->pipe;
13849 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
13850 struct drm_file *file)
13852 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
13853 struct drm_crtc *drmmode_crtc;
13854 struct intel_crtc *crtc;
13856 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
13858 if (!drmmode_crtc) {
13859 DRM_ERROR("no such CRTC id\n");
13863 crtc = to_intel_crtc(drmmode_crtc);
13864 pipe_from_crtc_id->pipe = crtc->pipe;
13869 static int intel_encoder_clones(struct intel_encoder *encoder)
13871 struct drm_device *dev = encoder->base.dev;
13872 struct intel_encoder *source_encoder;
13873 int index_mask = 0;
13876 for_each_intel_encoder(dev, source_encoder) {
13877 if (encoders_cloneable(encoder, source_encoder))
13878 index_mask |= (1 << entry);
13886 static bool has_edp_a(struct drm_device *dev)
13888 struct drm_i915_private *dev_priv = dev->dev_private;
13890 if (!IS_MOBILE(dev))
13893 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
13896 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
13902 static bool intel_crt_present(struct drm_device *dev)
13904 struct drm_i915_private *dev_priv = dev->dev_private;
13906 if (INTEL_INFO(dev)->gen >= 9)
13909 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
13912 if (IS_CHERRYVIEW(dev))
13915 if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
13921 static void intel_setup_outputs(struct drm_device *dev)
13923 struct drm_i915_private *dev_priv = dev->dev_private;
13924 struct intel_encoder *encoder;
13925 bool dpd_is_edp = false;
13927 intel_lvds_init(dev);
13929 if (intel_crt_present(dev))
13930 intel_crt_init(dev);
13932 if (IS_BROXTON(dev)) {
13934 * FIXME: Broxton doesn't support port detection via the
13935 * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
13936 * detect the ports.
13938 intel_ddi_init(dev, PORT_A);
13939 intel_ddi_init(dev, PORT_B);
13940 intel_ddi_init(dev, PORT_C);
13941 } else if (HAS_DDI(dev)) {
13945 * Haswell uses DDI functions to detect digital outputs.
13946 * On SKL pre-D0 the strap isn't connected, so we assume
13949 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
13950 /* WaIgnoreDDIAStrap: skl */
13951 if (found || IS_SKYLAKE(dev))
13952 intel_ddi_init(dev, PORT_A);
13954 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
13956 found = I915_READ(SFUSE_STRAP);
13958 if (found & SFUSE_STRAP_DDIB_DETECTED)
13959 intel_ddi_init(dev, PORT_B);
13960 if (found & SFUSE_STRAP_DDIC_DETECTED)
13961 intel_ddi_init(dev, PORT_C);
13962 if (found & SFUSE_STRAP_DDID_DETECTED)
13963 intel_ddi_init(dev, PORT_D);
13965 * On SKL we don't have a way to detect DDI-E so we rely on VBT.
13967 if (IS_SKYLAKE(dev) &&
13968 (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
13969 dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
13970 dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
13971 intel_ddi_init(dev, PORT_E);
13973 } else if (HAS_PCH_SPLIT(dev)) {
13975 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
13977 if (has_edp_a(dev))
13978 intel_dp_init(dev, DP_A, PORT_A);
13980 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
13981 /* PCH SDVOB multiplex with HDMIB */
13982 found = intel_sdvo_init(dev, PCH_SDVOB, true);
13984 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
13985 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
13986 intel_dp_init(dev, PCH_DP_B, PORT_B);
13989 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
13990 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
13992 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
13993 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
13995 if (I915_READ(PCH_DP_C) & DP_DETECTED)
13996 intel_dp_init(dev, PCH_DP_C, PORT_C);
13998 if (I915_READ(PCH_DP_D) & DP_DETECTED)
13999 intel_dp_init(dev, PCH_DP_D, PORT_D);
14000 } else if (IS_VALLEYVIEW(dev)) {
14002 * The DP_DETECTED bit is the latched state of the DDC
14003 * SDA pin at boot. However since eDP doesn't require DDC
14004 * (no way to plug in a DP->HDMI dongle) the DDC pins for
14005 * eDP ports may have been muxed to an alternate function.
14006 * Thus we can't rely on the DP_DETECTED bit alone to detect
14007 * eDP ports. Consult the VBT as well as DP_DETECTED to
14008 * detect eDP ports.
14010 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED &&
14011 !intel_dp_is_edp(dev, PORT_B))
14012 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
14014 if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED ||
14015 intel_dp_is_edp(dev, PORT_B))
14016 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B);
14018 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED &&
14019 !intel_dp_is_edp(dev, PORT_C))
14020 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
14022 if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED ||
14023 intel_dp_is_edp(dev, PORT_C))
14024 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
14026 if (IS_CHERRYVIEW(dev)) {
14027 if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED)
14028 intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID,
14030 /* eDP not supported on port D, so don't check VBT */
14031 if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED)
14032 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D);
14035 intel_dsi_init(dev);
14036 } else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) {
14037 bool found = false;
14039 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14040 DRM_DEBUG_KMS("probing SDVOB\n");
14041 found = intel_sdvo_init(dev, GEN3_SDVOB, true);
14042 if (!found && IS_G4X(dev)) {
14043 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
14044 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
14047 if (!found && IS_G4X(dev))
14048 intel_dp_init(dev, DP_B, PORT_B);
14051 /* Before G4X SDVOC doesn't have its own detect register */
14053 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14054 DRM_DEBUG_KMS("probing SDVOC\n");
14055 found = intel_sdvo_init(dev, GEN3_SDVOC, false);
14058 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
14061 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
14062 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
14065 intel_dp_init(dev, DP_C, PORT_C);
14069 (I915_READ(DP_D) & DP_DETECTED))
14070 intel_dp_init(dev, DP_D, PORT_D);
14071 } else if (IS_GEN2(dev))
14072 intel_dvo_init(dev);
14074 if (SUPPORTS_TV(dev))
14075 intel_tv_init(dev);
14077 intel_psr_init(dev);
14079 for_each_intel_encoder(dev, encoder) {
14080 encoder->base.possible_crtcs = encoder->crtc_mask;
14081 encoder->base.possible_clones =
14082 intel_encoder_clones(encoder);
14085 intel_init_pch_refclk(dev);
14087 drm_helper_move_panel_connectors_to_head(dev);
14090 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
14092 struct drm_device *dev = fb->dev;
14093 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14095 drm_framebuffer_cleanup(fb);
14096 mutex_lock(&dev->struct_mutex);
14097 WARN_ON(!intel_fb->obj->framebuffer_references--);
14098 drm_gem_object_unreference(&intel_fb->obj->base);
14099 mutex_unlock(&dev->struct_mutex);
14103 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
14104 struct drm_file *file,
14105 unsigned int *handle)
14107 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14108 struct drm_i915_gem_object *obj = intel_fb->obj;
14110 return drm_gem_handle_create(file, &obj->base, handle);
14113 static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
14114 struct drm_file *file,
14115 unsigned flags, unsigned color,
14116 struct drm_clip_rect *clips,
14117 unsigned num_clips)
14119 struct drm_device *dev = fb->dev;
14120 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14121 struct drm_i915_gem_object *obj = intel_fb->obj;
14123 mutex_lock(&dev->struct_mutex);
14124 intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB);
14125 mutex_unlock(&dev->struct_mutex);
14130 static const struct drm_framebuffer_funcs intel_fb_funcs = {
14131 .destroy = intel_user_framebuffer_destroy,
14132 .create_handle = intel_user_framebuffer_create_handle,
14133 .dirty = intel_user_framebuffer_dirty,
14137 u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
14138 uint32_t pixel_format)
14140 u32 gen = INTEL_INFO(dev)->gen;
14143 /* "The stride in bytes must not exceed the of the size of 8K
14144 * pixels and 32K bytes."
14146 return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
14147 } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
14149 } else if (gen >= 4) {
14150 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14154 } else if (gen >= 3) {
14155 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14160 /* XXX DSPC is limited to 4k tiled */
14165 static int intel_framebuffer_init(struct drm_device *dev,
14166 struct intel_framebuffer *intel_fb,
14167 struct drm_mode_fb_cmd2 *mode_cmd,
14168 struct drm_i915_gem_object *obj)
14170 unsigned int aligned_height;
14172 u32 pitch_limit, stride_alignment;
14174 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
14176 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
14177 /* Enforce that fb modifier and tiling mode match, but only for
14178 * X-tiled. This is needed for FBC. */
14179 if (!!(obj->tiling_mode == I915_TILING_X) !=
14180 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
14181 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
14185 if (obj->tiling_mode == I915_TILING_X)
14186 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
14187 else if (obj->tiling_mode == I915_TILING_Y) {
14188 DRM_DEBUG("No Y tiling for legacy addfb\n");
14193 /* Passed in modifier sanity checking. */
14194 switch (mode_cmd->modifier[0]) {
14195 case I915_FORMAT_MOD_Y_TILED:
14196 case I915_FORMAT_MOD_Yf_TILED:
14197 if (INTEL_INFO(dev)->gen < 9) {
14198 DRM_DEBUG("Unsupported tiling 0x%llx!\n",
14199 mode_cmd->modifier[0]);
14202 case DRM_FORMAT_MOD_NONE:
14203 case I915_FORMAT_MOD_X_TILED:
14206 DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
14207 mode_cmd->modifier[0]);
14211 stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
14212 mode_cmd->pixel_format);
14213 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
14214 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
14215 mode_cmd->pitches[0], stride_alignment);
14219 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
14220 mode_cmd->pixel_format);
14221 if (mode_cmd->pitches[0] > pitch_limit) {
14222 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
14223 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
14224 "tiled" : "linear",
14225 mode_cmd->pitches[0], pitch_limit);
14229 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
14230 mode_cmd->pitches[0] != obj->stride) {
14231 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
14232 mode_cmd->pitches[0], obj->stride);
14236 /* Reject formats not supported by any plane early. */
14237 switch (mode_cmd->pixel_format) {
14238 case DRM_FORMAT_C8:
14239 case DRM_FORMAT_RGB565:
14240 case DRM_FORMAT_XRGB8888:
14241 case DRM_FORMAT_ARGB8888:
14243 case DRM_FORMAT_XRGB1555:
14244 if (INTEL_INFO(dev)->gen > 3) {
14245 DRM_DEBUG("unsupported pixel format: %s\n",
14246 drm_get_format_name(mode_cmd->pixel_format));
14250 case DRM_FORMAT_ABGR8888:
14251 if (!IS_VALLEYVIEW(dev) && INTEL_INFO(dev)->gen < 9) {
14252 DRM_DEBUG("unsupported pixel format: %s\n",
14253 drm_get_format_name(mode_cmd->pixel_format));
14257 case DRM_FORMAT_XBGR8888:
14258 case DRM_FORMAT_XRGB2101010:
14259 case DRM_FORMAT_XBGR2101010:
14260 if (INTEL_INFO(dev)->gen < 4) {
14261 DRM_DEBUG("unsupported pixel format: %s\n",
14262 drm_get_format_name(mode_cmd->pixel_format));
14266 case DRM_FORMAT_ABGR2101010:
14267 if (!IS_VALLEYVIEW(dev)) {
14268 DRM_DEBUG("unsupported pixel format: %s\n",
14269 drm_get_format_name(mode_cmd->pixel_format));
14273 case DRM_FORMAT_YUYV:
14274 case DRM_FORMAT_UYVY:
14275 case DRM_FORMAT_YVYU:
14276 case DRM_FORMAT_VYUY:
14277 if (INTEL_INFO(dev)->gen < 5) {
14278 DRM_DEBUG("unsupported pixel format: %s\n",
14279 drm_get_format_name(mode_cmd->pixel_format));
14284 DRM_DEBUG("unsupported pixel format: %s\n",
14285 drm_get_format_name(mode_cmd->pixel_format));
14289 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
14290 if (mode_cmd->offsets[0] != 0)
14293 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
14294 mode_cmd->pixel_format,
14295 mode_cmd->modifier[0]);
14296 /* FIXME drm helper for size checks (especially planar formats)? */
14297 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
14300 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
14301 intel_fb->obj = obj;
14302 intel_fb->obj->framebuffer_references++;
14304 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
14306 DRM_ERROR("framebuffer init failed %d\n", ret);
14313 static struct drm_framebuffer *
14314 intel_user_framebuffer_create(struct drm_device *dev,
14315 struct drm_file *filp,
14316 struct drm_mode_fb_cmd2 *mode_cmd)
14318 struct drm_i915_gem_object *obj;
14320 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
14321 mode_cmd->handles[0]));
14322 if (&obj->base == NULL)
14323 return ERR_PTR(-ENOENT);
14325 return intel_framebuffer_create(dev, mode_cmd, obj);
14328 #ifndef CONFIG_DRM_FBDEV_EMULATION
14329 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
14334 static const struct drm_mode_config_funcs intel_mode_funcs = {
14335 .fb_create = intel_user_framebuffer_create,
14336 .output_poll_changed = intel_fbdev_output_poll_changed,
14337 .atomic_check = intel_atomic_check,
14338 .atomic_commit = intel_atomic_commit,
14339 .atomic_state_alloc = intel_atomic_state_alloc,
14340 .atomic_state_clear = intel_atomic_state_clear,
14343 /* Set up chip specific display functions */
14344 static void intel_init_display(struct drm_device *dev)
14346 struct drm_i915_private *dev_priv = dev->dev_private;
14348 if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
14349 dev_priv->display.find_dpll = g4x_find_best_dpll;
14350 else if (IS_CHERRYVIEW(dev))
14351 dev_priv->display.find_dpll = chv_find_best_dpll;
14352 else if (IS_VALLEYVIEW(dev))
14353 dev_priv->display.find_dpll = vlv_find_best_dpll;
14354 else if (IS_PINEVIEW(dev))
14355 dev_priv->display.find_dpll = pnv_find_best_dpll;
14357 dev_priv->display.find_dpll = i9xx_find_best_dpll;
14359 if (INTEL_INFO(dev)->gen >= 9) {
14360 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14361 dev_priv->display.get_initial_plane_config =
14362 skylake_get_initial_plane_config;
14363 dev_priv->display.crtc_compute_clock =
14364 haswell_crtc_compute_clock;
14365 dev_priv->display.crtc_enable = haswell_crtc_enable;
14366 dev_priv->display.crtc_disable = haswell_crtc_disable;
14367 dev_priv->display.update_primary_plane =
14368 skylake_update_primary_plane;
14369 } else if (HAS_DDI(dev)) {
14370 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14371 dev_priv->display.get_initial_plane_config =
14372 ironlake_get_initial_plane_config;
14373 dev_priv->display.crtc_compute_clock =
14374 haswell_crtc_compute_clock;
14375 dev_priv->display.crtc_enable = haswell_crtc_enable;
14376 dev_priv->display.crtc_disable = haswell_crtc_disable;
14377 dev_priv->display.update_primary_plane =
14378 ironlake_update_primary_plane;
14379 } else if (HAS_PCH_SPLIT(dev)) {
14380 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
14381 dev_priv->display.get_initial_plane_config =
14382 ironlake_get_initial_plane_config;
14383 dev_priv->display.crtc_compute_clock =
14384 ironlake_crtc_compute_clock;
14385 dev_priv->display.crtc_enable = ironlake_crtc_enable;
14386 dev_priv->display.crtc_disable = ironlake_crtc_disable;
14387 dev_priv->display.update_primary_plane =
14388 ironlake_update_primary_plane;
14389 } else if (IS_VALLEYVIEW(dev)) {
14390 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14391 dev_priv->display.get_initial_plane_config =
14392 i9xx_get_initial_plane_config;
14393 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14394 dev_priv->display.crtc_enable = valleyview_crtc_enable;
14395 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14396 dev_priv->display.update_primary_plane =
14397 i9xx_update_primary_plane;
14399 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14400 dev_priv->display.get_initial_plane_config =
14401 i9xx_get_initial_plane_config;
14402 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14403 dev_priv->display.crtc_enable = i9xx_crtc_enable;
14404 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14405 dev_priv->display.update_primary_plane =
14406 i9xx_update_primary_plane;
14409 /* Returns the core display clock speed */
14410 if (IS_SKYLAKE(dev))
14411 dev_priv->display.get_display_clock_speed =
14412 skylake_get_display_clock_speed;
14413 else if (IS_BROXTON(dev))
14414 dev_priv->display.get_display_clock_speed =
14415 broxton_get_display_clock_speed;
14416 else if (IS_BROADWELL(dev))
14417 dev_priv->display.get_display_clock_speed =
14418 broadwell_get_display_clock_speed;
14419 else if (IS_HASWELL(dev))
14420 dev_priv->display.get_display_clock_speed =
14421 haswell_get_display_clock_speed;
14422 else if (IS_VALLEYVIEW(dev))
14423 dev_priv->display.get_display_clock_speed =
14424 valleyview_get_display_clock_speed;
14425 else if (IS_GEN5(dev))
14426 dev_priv->display.get_display_clock_speed =
14427 ilk_get_display_clock_speed;
14428 else if (IS_I945G(dev) || IS_BROADWATER(dev) ||
14429 IS_GEN6(dev) || IS_IVYBRIDGE(dev))
14430 dev_priv->display.get_display_clock_speed =
14431 i945_get_display_clock_speed;
14432 else if (IS_GM45(dev))
14433 dev_priv->display.get_display_clock_speed =
14434 gm45_get_display_clock_speed;
14435 else if (IS_CRESTLINE(dev))
14436 dev_priv->display.get_display_clock_speed =
14437 i965gm_get_display_clock_speed;
14438 else if (IS_PINEVIEW(dev))
14439 dev_priv->display.get_display_clock_speed =
14440 pnv_get_display_clock_speed;
14441 else if (IS_G33(dev) || IS_G4X(dev))
14442 dev_priv->display.get_display_clock_speed =
14443 g33_get_display_clock_speed;
14444 else if (IS_I915G(dev))
14445 dev_priv->display.get_display_clock_speed =
14446 i915_get_display_clock_speed;
14447 else if (IS_I945GM(dev) || IS_845G(dev))
14448 dev_priv->display.get_display_clock_speed =
14449 i9xx_misc_get_display_clock_speed;
14450 else if (IS_PINEVIEW(dev))
14451 dev_priv->display.get_display_clock_speed =
14452 pnv_get_display_clock_speed;
14453 else if (IS_I915GM(dev))
14454 dev_priv->display.get_display_clock_speed =
14455 i915gm_get_display_clock_speed;
14456 else if (IS_I865G(dev))
14457 dev_priv->display.get_display_clock_speed =
14458 i865_get_display_clock_speed;
14459 else if (IS_I85X(dev))
14460 dev_priv->display.get_display_clock_speed =
14461 i85x_get_display_clock_speed;
14463 WARN(!IS_I830(dev), "Unknown platform. Assuming 133 MHz CDCLK\n");
14464 dev_priv->display.get_display_clock_speed =
14465 i830_get_display_clock_speed;
14468 if (IS_GEN5(dev)) {
14469 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
14470 } else if (IS_GEN6(dev)) {
14471 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
14472 } else if (IS_IVYBRIDGE(dev)) {
14473 /* FIXME: detect B0+ stepping and use auto training */
14474 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
14475 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
14476 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
14477 if (IS_BROADWELL(dev)) {
14478 dev_priv->display.modeset_commit_cdclk =
14479 broadwell_modeset_commit_cdclk;
14480 dev_priv->display.modeset_calc_cdclk =
14481 broadwell_modeset_calc_cdclk;
14483 } else if (IS_VALLEYVIEW(dev)) {
14484 dev_priv->display.modeset_commit_cdclk =
14485 valleyview_modeset_commit_cdclk;
14486 dev_priv->display.modeset_calc_cdclk =
14487 valleyview_modeset_calc_cdclk;
14488 } else if (IS_BROXTON(dev)) {
14489 dev_priv->display.modeset_commit_cdclk =
14490 broxton_modeset_commit_cdclk;
14491 dev_priv->display.modeset_calc_cdclk =
14492 broxton_modeset_calc_cdclk;
14495 switch (INTEL_INFO(dev)->gen) {
14497 dev_priv->display.queue_flip = intel_gen2_queue_flip;
14501 dev_priv->display.queue_flip = intel_gen3_queue_flip;
14506 dev_priv->display.queue_flip = intel_gen4_queue_flip;
14510 dev_priv->display.queue_flip = intel_gen6_queue_flip;
14513 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
14514 dev_priv->display.queue_flip = intel_gen7_queue_flip;
14517 /* Drop through - unsupported since execlist only. */
14519 /* Default just returns -ENODEV to indicate unsupported */
14520 dev_priv->display.queue_flip = intel_default_queue_flip;
14523 intel_panel_init_backlight_funcs(dev);
14525 mutex_init(&dev_priv->pps_mutex);
14529 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
14530 * resume, or other times. This quirk makes sure that's the case for
14531 * affected systems.
14533 static void quirk_pipea_force(struct drm_device *dev)
14535 struct drm_i915_private *dev_priv = dev->dev_private;
14537 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
14538 DRM_INFO("applying pipe a force quirk\n");
14541 static void quirk_pipeb_force(struct drm_device *dev)
14543 struct drm_i915_private *dev_priv = dev->dev_private;
14545 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
14546 DRM_INFO("applying pipe b force quirk\n");
14550 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
14552 static void quirk_ssc_force_disable(struct drm_device *dev)
14554 struct drm_i915_private *dev_priv = dev->dev_private;
14555 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
14556 DRM_INFO("applying lvds SSC disable quirk\n");
14560 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
14563 static void quirk_invert_brightness(struct drm_device *dev)
14565 struct drm_i915_private *dev_priv = dev->dev_private;
14566 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
14567 DRM_INFO("applying inverted panel brightness quirk\n");
14570 /* Some VBT's incorrectly indicate no backlight is present */
14571 static void quirk_backlight_present(struct drm_device *dev)
14573 struct drm_i915_private *dev_priv = dev->dev_private;
14574 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
14575 DRM_INFO("applying backlight present quirk\n");
14578 struct intel_quirk {
14580 int subsystem_vendor;
14581 int subsystem_device;
14582 void (*hook)(struct drm_device *dev);
14585 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
14586 struct intel_dmi_quirk {
14587 void (*hook)(struct drm_device *dev);
14588 const struct dmi_system_id (*dmi_id_list)[];
14591 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
14593 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
14597 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
14599 .dmi_id_list = &(const struct dmi_system_id[]) {
14601 .callback = intel_dmi_reverse_brightness,
14602 .ident = "NCR Corporation",
14603 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
14604 DMI_MATCH(DMI_PRODUCT_NAME, ""),
14607 { } /* terminating entry */
14609 .hook = quirk_invert_brightness,
14613 static struct intel_quirk intel_quirks[] = {
14614 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
14615 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
14617 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
14618 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
14620 /* 830 needs to leave pipe A & dpll A up */
14621 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
14623 /* 830 needs to leave pipe B & dpll B up */
14624 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
14626 /* Lenovo U160 cannot use SSC on LVDS */
14627 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
14629 /* Sony Vaio Y cannot use SSC on LVDS */
14630 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
14632 /* Acer Aspire 5734Z must invert backlight brightness */
14633 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
14635 /* Acer/eMachines G725 */
14636 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
14638 /* Acer/eMachines e725 */
14639 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
14641 /* Acer/Packard Bell NCL20 */
14642 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
14644 /* Acer Aspire 4736Z */
14645 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
14647 /* Acer Aspire 5336 */
14648 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
14650 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
14651 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
14653 /* Acer C720 Chromebook (Core i3 4005U) */
14654 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
14656 /* Apple Macbook 2,1 (Core 2 T7400) */
14657 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
14659 /* Toshiba CB35 Chromebook (Celeron 2955U) */
14660 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
14662 /* HP Chromebook 14 (Celeron 2955U) */
14663 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
14665 /* Dell Chromebook 11 */
14666 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
14669 static void intel_init_quirks(struct drm_device *dev)
14671 struct pci_dev *d = dev->pdev;
14674 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
14675 struct intel_quirk *q = &intel_quirks[i];
14677 if (d->device == q->device &&
14678 (d->subsystem_vendor == q->subsystem_vendor ||
14679 q->subsystem_vendor == PCI_ANY_ID) &&
14680 (d->subsystem_device == q->subsystem_device ||
14681 q->subsystem_device == PCI_ANY_ID))
14684 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
14685 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
14686 intel_dmi_quirks[i].hook(dev);
14690 /* Disable the VGA plane that we never use */
14691 static void i915_disable_vga(struct drm_device *dev)
14693 struct drm_i915_private *dev_priv = dev->dev_private;
14695 u32 vga_reg = i915_vgacntrl_reg(dev);
14697 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
14698 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
14699 outb(SR01, VGA_SR_INDEX);
14700 sr1 = inb(VGA_SR_DATA);
14701 outb(sr1 | 1<<5, VGA_SR_DATA);
14702 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
14705 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
14706 POSTING_READ(vga_reg);
14709 void intel_modeset_init_hw(struct drm_device *dev)
14711 intel_update_cdclk(dev);
14712 intel_prepare_ddi(dev);
14713 intel_init_clock_gating(dev);
14714 intel_enable_gt_powersave(dev);
14717 void intel_modeset_init(struct drm_device *dev)
14719 struct drm_i915_private *dev_priv = dev->dev_private;
14722 struct intel_crtc *crtc;
14724 drm_mode_config_init(dev);
14726 dev->mode_config.min_width = 0;
14727 dev->mode_config.min_height = 0;
14729 dev->mode_config.preferred_depth = 24;
14730 dev->mode_config.prefer_shadow = 1;
14732 dev->mode_config.allow_fb_modifiers = true;
14734 dev->mode_config.funcs = &intel_mode_funcs;
14736 intel_init_quirks(dev);
14738 intel_init_pm(dev);
14740 if (INTEL_INFO(dev)->num_pipes == 0)
14744 * There may be no VBT; and if the BIOS enabled SSC we can
14745 * just keep using it to avoid unnecessary flicker. Whereas if the
14746 * BIOS isn't using it, don't assume it will work even if the VBT
14747 * indicates as much.
14749 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
14750 bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
14753 if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
14754 DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
14755 bios_lvds_use_ssc ? "en" : "dis",
14756 dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
14757 dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
14761 intel_init_display(dev);
14762 intel_init_audio(dev);
14764 if (IS_GEN2(dev)) {
14765 dev->mode_config.max_width = 2048;
14766 dev->mode_config.max_height = 2048;
14767 } else if (IS_GEN3(dev)) {
14768 dev->mode_config.max_width = 4096;
14769 dev->mode_config.max_height = 4096;
14771 dev->mode_config.max_width = 8192;
14772 dev->mode_config.max_height = 8192;
14775 if (IS_845G(dev) || IS_I865G(dev)) {
14776 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
14777 dev->mode_config.cursor_height = 1023;
14778 } else if (IS_GEN2(dev)) {
14779 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
14780 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
14782 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
14783 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
14786 dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
14788 DRM_DEBUG_KMS("%d display pipe%s available.\n",
14789 INTEL_INFO(dev)->num_pipes,
14790 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
14792 for_each_pipe(dev_priv, pipe) {
14793 intel_crtc_init(dev, pipe);
14794 for_each_sprite(dev_priv, pipe, sprite) {
14795 ret = intel_plane_init(dev, pipe, sprite);
14797 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
14798 pipe_name(pipe), sprite_name(pipe, sprite), ret);
14802 intel_init_dpio(dev);
14804 intel_shared_dpll_init(dev);
14806 /* Just disable it once at startup */
14807 i915_disable_vga(dev);
14808 intel_setup_outputs(dev);
14810 /* Just in case the BIOS is doing something questionable. */
14811 intel_fbc_disable(dev_priv);
14813 drm_modeset_lock_all(dev);
14814 intel_modeset_setup_hw_state(dev);
14815 drm_modeset_unlock_all(dev);
14817 for_each_intel_crtc(dev, crtc) {
14818 struct intel_initial_plane_config plane_config = {};
14824 * Note that reserving the BIOS fb up front prevents us
14825 * from stuffing other stolen allocations like the ring
14826 * on top. This prevents some ugliness at boot time, and
14827 * can even allow for smooth boot transitions if the BIOS
14828 * fb is large enough for the active pipe configuration.
14830 dev_priv->display.get_initial_plane_config(crtc,
14834 * If the fb is shared between multiple heads, we'll
14835 * just get the first one.
14837 intel_find_initial_plane_obj(crtc, &plane_config);
14841 static void intel_enable_pipe_a(struct drm_device *dev)
14843 struct intel_connector *connector;
14844 struct drm_connector *crt = NULL;
14845 struct intel_load_detect_pipe load_detect_temp;
14846 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
14848 /* We can't just switch on the pipe A, we need to set things up with a
14849 * proper mode and output configuration. As a gross hack, enable pipe A
14850 * by enabling the load detect pipe once. */
14851 for_each_intel_connector(dev, connector) {
14852 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
14853 crt = &connector->base;
14861 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
14862 intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
14866 intel_check_plane_mapping(struct intel_crtc *crtc)
14868 struct drm_device *dev = crtc->base.dev;
14869 struct drm_i915_private *dev_priv = dev->dev_private;
14872 if (INTEL_INFO(dev)->num_pipes == 1)
14875 reg = DSPCNTR(!crtc->plane);
14876 val = I915_READ(reg);
14878 if ((val & DISPLAY_PLANE_ENABLE) &&
14879 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
14885 static void intel_sanitize_crtc(struct intel_crtc *crtc)
14887 struct drm_device *dev = crtc->base.dev;
14888 struct drm_i915_private *dev_priv = dev->dev_private;
14889 struct intel_encoder *encoder;
14893 /* Clear any frame start delays used for debugging left by the BIOS */
14894 reg = PIPECONF(crtc->config->cpu_transcoder);
14895 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
14897 /* restore vblank interrupts to correct state */
14898 drm_crtc_vblank_reset(&crtc->base);
14899 if (crtc->active) {
14900 drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
14901 update_scanline_offset(crtc);
14902 drm_crtc_vblank_on(&crtc->base);
14905 /* We need to sanitize the plane -> pipe mapping first because this will
14906 * disable the crtc (and hence change the state) if it is wrong. Note
14907 * that gen4+ has a fixed plane -> pipe mapping. */
14908 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
14911 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
14912 crtc->base.base.id);
14914 /* Pipe has the wrong plane attached and the plane is active.
14915 * Temporarily change the plane mapping and disable everything
14917 plane = crtc->plane;
14918 to_intel_plane_state(crtc->base.primary->state)->visible = true;
14919 crtc->plane = !plane;
14920 intel_crtc_disable_noatomic(&crtc->base);
14921 crtc->plane = plane;
14924 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
14925 crtc->pipe == PIPE_A && !crtc->active) {
14926 /* BIOS forgot to enable pipe A, this mostly happens after
14927 * resume. Force-enable the pipe to fix this, the update_dpms
14928 * call below we restore the pipe to the right state, but leave
14929 * the required bits on. */
14930 intel_enable_pipe_a(dev);
14933 /* Adjust the state of the output pipe according to whether we
14934 * have active connectors/encoders. */
14936 for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
14942 intel_crtc_disable_noatomic(&crtc->base);
14944 if (crtc->active != crtc->base.state->active) {
14946 /* This can happen either due to bugs in the get_hw_state
14947 * functions or because of calls to intel_crtc_disable_noatomic,
14948 * or because the pipe is force-enabled due to the
14950 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
14951 crtc->base.base.id,
14952 crtc->base.state->enable ? "enabled" : "disabled",
14953 crtc->active ? "enabled" : "disabled");
14955 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, NULL) < 0);
14956 crtc->base.state->active = crtc->active;
14957 crtc->base.enabled = crtc->active;
14959 /* Because we only establish the connector -> encoder ->
14960 * crtc links if something is active, this means the
14961 * crtc is now deactivated. Break the links. connector
14962 * -> encoder links are only establish when things are
14963 * actually up, hence no need to break them. */
14964 WARN_ON(crtc->active);
14966 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
14967 encoder->base.crtc = NULL;
14970 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
14972 * We start out with underrun reporting disabled to avoid races.
14973 * For correct bookkeeping mark this on active crtcs.
14975 * Also on gmch platforms we dont have any hardware bits to
14976 * disable the underrun reporting. Which means we need to start
14977 * out with underrun reporting disabled also on inactive pipes,
14978 * since otherwise we'll complain about the garbage we read when
14979 * e.g. coming up after runtime pm.
14981 * No protection against concurrent access is required - at
14982 * worst a fifo underrun happens which also sets this to false.
14984 crtc->cpu_fifo_underrun_disabled = true;
14985 crtc->pch_fifo_underrun_disabled = true;
14989 static void intel_sanitize_encoder(struct intel_encoder *encoder)
14991 struct intel_connector *connector;
14992 struct drm_device *dev = encoder->base.dev;
14993 bool active = false;
14995 /* We need to check both for a crtc link (meaning that the
14996 * encoder is active and trying to read from a pipe) and the
14997 * pipe itself being active. */
14998 bool has_active_crtc = encoder->base.crtc &&
14999 to_intel_crtc(encoder->base.crtc)->active;
15001 for_each_intel_connector(dev, connector) {
15002 if (connector->base.encoder != &encoder->base)
15009 if (active && !has_active_crtc) {
15010 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
15011 encoder->base.base.id,
15012 encoder->base.name);
15014 /* Connector is active, but has no active pipe. This is
15015 * fallout from our resume register restoring. Disable
15016 * the encoder manually again. */
15017 if (encoder->base.crtc) {
15018 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
15019 encoder->base.base.id,
15020 encoder->base.name);
15021 encoder->disable(encoder);
15022 if (encoder->post_disable)
15023 encoder->post_disable(encoder);
15025 encoder->base.crtc = NULL;
15027 /* Inconsistent output/port/pipe state happens presumably due to
15028 * a bug in one of the get_hw_state functions. Or someplace else
15029 * in our code, like the register restore mess on resume. Clamp
15030 * things to off as a safer default. */
15031 for_each_intel_connector(dev, connector) {
15032 if (connector->encoder != encoder)
15034 connector->base.dpms = DRM_MODE_DPMS_OFF;
15035 connector->base.encoder = NULL;
15038 /* Enabled encoders without active connectors will be fixed in
15039 * the crtc fixup. */
15042 void i915_redisable_vga_power_on(struct drm_device *dev)
15044 struct drm_i915_private *dev_priv = dev->dev_private;
15045 u32 vga_reg = i915_vgacntrl_reg(dev);
15047 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
15048 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
15049 i915_disable_vga(dev);
15053 void i915_redisable_vga(struct drm_device *dev)
15055 struct drm_i915_private *dev_priv = dev->dev_private;
15057 /* This function can be called both from intel_modeset_setup_hw_state or
15058 * at a very early point in our resume sequence, where the power well
15059 * structures are not yet restored. Since this function is at a very
15060 * paranoid "someone might have enabled VGA while we were not looking"
15061 * level, just check if the power well is enabled instead of trying to
15062 * follow the "don't touch the power well if we don't need it" policy
15063 * the rest of the driver uses. */
15064 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
15067 i915_redisable_vga_power_on(dev);
15070 static bool primary_get_hw_state(struct intel_crtc *crtc)
15072 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
15074 return !!(I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE);
15077 static void readout_plane_state(struct intel_crtc *crtc,
15078 struct intel_crtc_state *crtc_state)
15080 struct intel_plane *p;
15081 struct intel_plane_state *plane_state;
15082 bool active = crtc_state->base.active;
15084 for_each_intel_plane(crtc->base.dev, p) {
15085 if (crtc->pipe != p->pipe)
15088 plane_state = to_intel_plane_state(p->base.state);
15090 if (p->base.type == DRM_PLANE_TYPE_PRIMARY)
15091 plane_state->visible = primary_get_hw_state(crtc);
15094 p->disable_plane(&p->base, &crtc->base);
15096 plane_state->visible = false;
15101 static void intel_modeset_readout_hw_state(struct drm_device *dev)
15103 struct drm_i915_private *dev_priv = dev->dev_private;
15105 struct intel_crtc *crtc;
15106 struct intel_encoder *encoder;
15107 struct intel_connector *connector;
15110 for_each_intel_crtc(dev, crtc) {
15111 __drm_atomic_helper_crtc_destroy_state(&crtc->base, crtc->base.state);
15112 memset(crtc->config, 0, sizeof(*crtc->config));
15113 crtc->config->base.crtc = &crtc->base;
15115 crtc->active = dev_priv->display.get_pipe_config(crtc,
15118 crtc->base.state->active = crtc->active;
15119 crtc->base.enabled = crtc->active;
15121 memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
15122 if (crtc->base.state->active) {
15123 intel_mode_from_pipe_config(&crtc->base.mode, crtc->config);
15124 intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config);
15125 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
15128 * The initial mode needs to be set in order to keep
15129 * the atomic core happy. It wants a valid mode if the
15130 * crtc's enabled, so we do the above call.
15132 * At this point some state updated by the connectors
15133 * in their ->detect() callback has not run yet, so
15134 * no recalculation can be done yet.
15136 * Even if we could do a recalculation and modeset
15137 * right now it would cause a double modeset if
15138 * fbdev or userspace chooses a different initial mode.
15140 * If that happens, someone indicated they wanted a
15141 * mode change, which means it's safe to do a full
15144 crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED;
15147 crtc->base.hwmode = crtc->config->base.adjusted_mode;
15148 readout_plane_state(crtc, to_intel_crtc_state(crtc->base.state));
15150 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
15151 crtc->base.base.id,
15152 crtc->active ? "enabled" : "disabled");
15155 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15156 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15158 pll->on = pll->get_hw_state(dev_priv, pll,
15159 &pll->config.hw_state);
15161 pll->config.crtc_mask = 0;
15162 for_each_intel_crtc(dev, crtc) {
15163 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
15165 pll->config.crtc_mask |= 1 << crtc->pipe;
15169 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
15170 pll->name, pll->config.crtc_mask, pll->on);
15172 if (pll->config.crtc_mask)
15173 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
15176 for_each_intel_encoder(dev, encoder) {
15179 if (encoder->get_hw_state(encoder, &pipe)) {
15180 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15181 encoder->base.crtc = &crtc->base;
15182 encoder->get_config(encoder, crtc->config);
15184 encoder->base.crtc = NULL;
15187 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
15188 encoder->base.base.id,
15189 encoder->base.name,
15190 encoder->base.crtc ? "enabled" : "disabled",
15194 for_each_intel_connector(dev, connector) {
15195 if (connector->get_hw_state(connector)) {
15196 connector->base.dpms = DRM_MODE_DPMS_ON;
15197 connector->base.encoder = &connector->encoder->base;
15199 connector->base.dpms = DRM_MODE_DPMS_OFF;
15200 connector->base.encoder = NULL;
15202 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
15203 connector->base.base.id,
15204 connector->base.name,
15205 connector->base.encoder ? "enabled" : "disabled");
15209 /* Scan out the current hw modeset state,
15210 * and sanitizes it to the current state
15213 intel_modeset_setup_hw_state(struct drm_device *dev)
15215 struct drm_i915_private *dev_priv = dev->dev_private;
15217 struct intel_crtc *crtc;
15218 struct intel_encoder *encoder;
15221 intel_modeset_readout_hw_state(dev);
15223 /* HW state is read out, now we need to sanitize this mess. */
15224 for_each_intel_encoder(dev, encoder) {
15225 intel_sanitize_encoder(encoder);
15228 for_each_pipe(dev_priv, pipe) {
15229 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15230 intel_sanitize_crtc(crtc);
15231 intel_dump_pipe_config(crtc, crtc->config,
15232 "[setup_hw_state]");
15235 intel_modeset_update_connector_atomic_state(dev);
15237 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15238 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15240 if (!pll->on || pll->active)
15243 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
15245 pll->disable(dev_priv, pll);
15249 if (IS_VALLEYVIEW(dev))
15250 vlv_wm_get_hw_state(dev);
15251 else if (IS_GEN9(dev))
15252 skl_wm_get_hw_state(dev);
15253 else if (HAS_PCH_SPLIT(dev))
15254 ilk_wm_get_hw_state(dev);
15256 for_each_intel_crtc(dev, crtc) {
15257 unsigned long put_domains;
15259 put_domains = modeset_get_crtc_power_domains(&crtc->base);
15260 if (WARN_ON(put_domains))
15261 modeset_put_power_domains(dev_priv, put_domains);
15263 intel_display_set_init_power(dev_priv, false);
15266 void intel_display_resume(struct drm_device *dev)
15268 struct drm_atomic_state *state = drm_atomic_state_alloc(dev);
15269 struct intel_connector *conn;
15270 struct intel_plane *plane;
15271 struct drm_crtc *crtc;
15277 state->acquire_ctx = dev->mode_config.acquire_ctx;
15279 /* preserve complete old state, including dpll */
15280 intel_atomic_get_shared_dpll_state(state);
15282 for_each_crtc(dev, crtc) {
15283 struct drm_crtc_state *crtc_state =
15284 drm_atomic_get_crtc_state(state, crtc);
15286 ret = PTR_ERR_OR_ZERO(crtc_state);
15290 /* force a restore */
15291 crtc_state->mode_changed = true;
15294 for_each_intel_plane(dev, plane) {
15295 ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(state, &plane->base));
15300 for_each_intel_connector(dev, conn) {
15301 ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(state, &conn->base));
15306 intel_modeset_setup_hw_state(dev);
15308 i915_redisable_vga(dev);
15309 ret = drm_atomic_commit(state);
15314 DRM_ERROR("Restoring old state failed with %i\n", ret);
15315 drm_atomic_state_free(state);
15318 void intel_modeset_gem_init(struct drm_device *dev)
15320 struct drm_crtc *c;
15321 struct drm_i915_gem_object *obj;
15324 mutex_lock(&dev->struct_mutex);
15325 intel_init_gt_powersave(dev);
15326 mutex_unlock(&dev->struct_mutex);
15328 intel_modeset_init_hw(dev);
15330 intel_setup_overlay(dev);
15333 * Make sure any fbs we allocated at startup are properly
15334 * pinned & fenced. When we do the allocation it's too early
15337 for_each_crtc(dev, c) {
15338 obj = intel_fb_obj(c->primary->fb);
15342 mutex_lock(&dev->struct_mutex);
15343 ret = intel_pin_and_fence_fb_obj(c->primary,
15347 mutex_unlock(&dev->struct_mutex);
15349 DRM_ERROR("failed to pin boot fb on pipe %d\n",
15350 to_intel_crtc(c)->pipe);
15351 drm_framebuffer_unreference(c->primary->fb);
15352 c->primary->fb = NULL;
15353 c->primary->crtc = c->primary->state->crtc = NULL;
15354 update_state_fb(c->primary);
15355 c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
15359 intel_backlight_register(dev);
15362 void intel_connector_unregister(struct intel_connector *intel_connector)
15364 struct drm_connector *connector = &intel_connector->base;
15366 intel_panel_destroy_backlight(connector);
15367 drm_connector_unregister(connector);
15370 void intel_modeset_cleanup(struct drm_device *dev)
15372 struct drm_i915_private *dev_priv = dev->dev_private;
15373 struct drm_connector *connector;
15375 intel_disable_gt_powersave(dev);
15377 intel_backlight_unregister(dev);
15380 * Interrupts and polling as the first thing to avoid creating havoc.
15381 * Too much stuff here (turning of connectors, ...) would
15382 * experience fancy races otherwise.
15384 intel_irq_uninstall(dev_priv);
15387 * Due to the hpd irq storm handling the hotplug work can re-arm the
15388 * poll handlers. Hence disable polling after hpd handling is shut down.
15390 drm_kms_helper_poll_fini(dev);
15392 intel_unregister_dsm_handler();
15394 intel_fbc_disable(dev_priv);
15396 /* flush any delayed tasks or pending work */
15397 flush_scheduled_work();
15399 /* destroy the backlight and sysfs files before encoders/connectors */
15400 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
15401 struct intel_connector *intel_connector;
15403 intel_connector = to_intel_connector(connector);
15404 intel_connector->unregister(intel_connector);
15407 drm_mode_config_cleanup(dev);
15409 intel_cleanup_overlay(dev);
15411 mutex_lock(&dev->struct_mutex);
15412 intel_cleanup_gt_powersave(dev);
15413 mutex_unlock(&dev->struct_mutex);
15417 * Return which encoder is currently attached for connector.
15419 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
15421 return &intel_attached_encoder(connector)->base;
15424 void intel_connector_attach_encoder(struct intel_connector *connector,
15425 struct intel_encoder *encoder)
15427 connector->encoder = encoder;
15428 drm_mode_connector_attach_encoder(&connector->base,
15433 * set vga decode state - true == enable VGA decode
15435 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
15437 struct drm_i915_private *dev_priv = dev->dev_private;
15438 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
15441 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
15442 DRM_ERROR("failed to read control word\n");
15446 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
15450 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
15452 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
15454 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
15455 DRM_ERROR("failed to write control word\n");
15462 struct intel_display_error_state {
15464 u32 power_well_driver;
15466 int num_transcoders;
15468 struct intel_cursor_error_state {
15473 } cursor[I915_MAX_PIPES];
15475 struct intel_pipe_error_state {
15476 bool power_domain_on;
15479 } pipe[I915_MAX_PIPES];
15481 struct intel_plane_error_state {
15489 } plane[I915_MAX_PIPES];
15491 struct intel_transcoder_error_state {
15492 bool power_domain_on;
15493 enum transcoder cpu_transcoder;
15506 struct intel_display_error_state *
15507 intel_display_capture_error_state(struct drm_device *dev)
15509 struct drm_i915_private *dev_priv = dev->dev_private;
15510 struct intel_display_error_state *error;
15511 int transcoders[] = {
15519 if (INTEL_INFO(dev)->num_pipes == 0)
15522 error = kzalloc(sizeof(*error), GFP_ATOMIC);
15526 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15527 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
15529 for_each_pipe(dev_priv, i) {
15530 error->pipe[i].power_domain_on =
15531 __intel_display_power_is_enabled(dev_priv,
15532 POWER_DOMAIN_PIPE(i));
15533 if (!error->pipe[i].power_domain_on)
15536 error->cursor[i].control = I915_READ(CURCNTR(i));
15537 error->cursor[i].position = I915_READ(CURPOS(i));
15538 error->cursor[i].base = I915_READ(CURBASE(i));
15540 error->plane[i].control = I915_READ(DSPCNTR(i));
15541 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
15542 if (INTEL_INFO(dev)->gen <= 3) {
15543 error->plane[i].size = I915_READ(DSPSIZE(i));
15544 error->plane[i].pos = I915_READ(DSPPOS(i));
15546 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15547 error->plane[i].addr = I915_READ(DSPADDR(i));
15548 if (INTEL_INFO(dev)->gen >= 4) {
15549 error->plane[i].surface = I915_READ(DSPSURF(i));
15550 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
15553 error->pipe[i].source = I915_READ(PIPESRC(i));
15555 if (HAS_GMCH_DISPLAY(dev))
15556 error->pipe[i].stat = I915_READ(PIPESTAT(i));
15559 error->num_transcoders = INTEL_INFO(dev)->num_pipes;
15560 if (HAS_DDI(dev_priv->dev))
15561 error->num_transcoders++; /* Account for eDP. */
15563 for (i = 0; i < error->num_transcoders; i++) {
15564 enum transcoder cpu_transcoder = transcoders[i];
15566 error->transcoder[i].power_domain_on =
15567 __intel_display_power_is_enabled(dev_priv,
15568 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
15569 if (!error->transcoder[i].power_domain_on)
15572 error->transcoder[i].cpu_transcoder = cpu_transcoder;
15574 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
15575 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
15576 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
15577 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
15578 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
15579 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
15580 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
15586 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
15589 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
15590 struct drm_device *dev,
15591 struct intel_display_error_state *error)
15593 struct drm_i915_private *dev_priv = dev->dev_private;
15599 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
15600 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15601 err_printf(m, "PWR_WELL_CTL2: %08x\n",
15602 error->power_well_driver);
15603 for_each_pipe(dev_priv, i) {
15604 err_printf(m, "Pipe [%d]:\n", i);
15605 err_printf(m, " Power: %s\n",
15606 error->pipe[i].power_domain_on ? "on" : "off");
15607 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
15608 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
15610 err_printf(m, "Plane [%d]:\n", i);
15611 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
15612 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
15613 if (INTEL_INFO(dev)->gen <= 3) {
15614 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
15615 err_printf(m, " POS: %08x\n", error->plane[i].pos);
15617 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15618 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
15619 if (INTEL_INFO(dev)->gen >= 4) {
15620 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
15621 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
15624 err_printf(m, "Cursor [%d]:\n", i);
15625 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
15626 err_printf(m, " POS: %08x\n", error->cursor[i].position);
15627 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
15630 for (i = 0; i < error->num_transcoders; i++) {
15631 err_printf(m, "CPU transcoder: %c\n",
15632 transcoder_name(error->transcoder[i].cpu_transcoder));
15633 err_printf(m, " Power: %s\n",
15634 error->transcoder[i].power_domain_on ? "on" : "off");
15635 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
15636 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
15637 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
15638 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
15639 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
15640 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
15641 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
15645 void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
15647 struct intel_crtc *crtc;
15649 for_each_intel_crtc(dev, crtc) {
15650 struct intel_unpin_work *work;
15652 spin_lock_irq(&dev->event_lock);
15654 work = crtc->unpin_work;
15656 if (work && work->event &&
15657 work->event->base.file_priv == file) {
15658 kfree(work->event);
15659 work->event = NULL;
15662 spin_unlock_irq(&dev->event_lock);