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/i2c.h>
29 #include <linux/slab.h>
31 #include <drm/drm_crtc.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/drm_edid.h>
34 #include "intel_drv.h"
35 #include <drm/i915_drm.h>
38 /* Here's the desired hotplug mode */
39 #define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
40 ADPA_CRT_HOTPLUG_WARMUP_10MS | \
41 ADPA_CRT_HOTPLUG_SAMPLE_4S | \
42 ADPA_CRT_HOTPLUG_VOLTAGE_50 | \
43 ADPA_CRT_HOTPLUG_VOLREF_325MV | \
44 ADPA_CRT_HOTPLUG_ENABLE)
47 struct intel_encoder base;
48 /* DPMS state is stored in the connector, which we need in the
49 * encoder's enable/disable callbacks */
50 struct intel_connector *connector;
51 bool force_hotplug_required;
55 static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
57 return container_of(encoder, struct intel_crt, base);
60 static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
62 return intel_encoder_to_crt(intel_attached_encoder(connector));
65 static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
68 struct drm_device *dev = encoder->base.dev;
69 struct drm_i915_private *dev_priv = dev->dev_private;
70 struct intel_crt *crt = intel_encoder_to_crt(encoder);
73 tmp = I915_READ(crt->adpa_reg);
75 if (!(tmp & ADPA_DAC_ENABLE))
79 *pipe = PORT_TO_PIPE_CPT(tmp);
81 *pipe = PORT_TO_PIPE(tmp);
86 static void intel_crt_get_config(struct intel_encoder *encoder,
87 struct intel_crtc_config *pipe_config)
89 struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
90 struct intel_crt *crt = intel_encoder_to_crt(encoder);
93 tmp = I915_READ(crt->adpa_reg);
95 if (tmp & ADPA_HSYNC_ACTIVE_HIGH)
96 flags |= DRM_MODE_FLAG_PHSYNC;
98 flags |= DRM_MODE_FLAG_NHSYNC;
100 if (tmp & ADPA_VSYNC_ACTIVE_HIGH)
101 flags |= DRM_MODE_FLAG_PVSYNC;
103 flags |= DRM_MODE_FLAG_NVSYNC;
105 pipe_config->adjusted_mode.flags |= flags;
108 /* Note: The caller is required to filter out dpms modes not supported by the
110 static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode)
112 struct drm_device *dev = encoder->base.dev;
113 struct drm_i915_private *dev_priv = dev->dev_private;
114 struct intel_crt *crt = intel_encoder_to_crt(encoder);
117 temp = I915_READ(crt->adpa_reg);
118 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
119 temp &= ~ADPA_DAC_ENABLE;
122 case DRM_MODE_DPMS_ON:
123 temp |= ADPA_DAC_ENABLE;
125 case DRM_MODE_DPMS_STANDBY:
126 temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
128 case DRM_MODE_DPMS_SUSPEND:
129 temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
131 case DRM_MODE_DPMS_OFF:
132 temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
136 I915_WRITE(crt->adpa_reg, temp);
139 static void intel_disable_crt(struct intel_encoder *encoder)
141 intel_crt_set_dpms(encoder, DRM_MODE_DPMS_OFF);
144 static void intel_enable_crt(struct intel_encoder *encoder)
146 struct intel_crt *crt = intel_encoder_to_crt(encoder);
148 intel_crt_set_dpms(encoder, crt->connector->base.dpms);
151 /* Special dpms function to support cloning between dvo/sdvo/crt. */
152 static void intel_crt_dpms(struct drm_connector *connector, int mode)
154 struct drm_device *dev = connector->dev;
155 struct intel_encoder *encoder = intel_attached_encoder(connector);
156 struct drm_crtc *crtc;
159 /* PCH platforms and VLV only support on/off. */
160 if (INTEL_INFO(dev)->gen >= 5 && mode != DRM_MODE_DPMS_ON)
161 mode = DRM_MODE_DPMS_OFF;
163 if (mode == connector->dpms)
166 old_dpms = connector->dpms;
167 connector->dpms = mode;
169 /* Only need to change hw state when actually enabled */
170 crtc = encoder->base.crtc;
172 encoder->connectors_active = false;
176 /* We need the pipe to run for anything but OFF. */
177 if (mode == DRM_MODE_DPMS_OFF)
178 encoder->connectors_active = false;
180 encoder->connectors_active = true;
182 /* We call connector dpms manually below in case pipe dpms doesn't
183 * change due to cloning. */
184 if (mode < old_dpms) {
185 /* From off to on, enable the pipe first. */
186 intel_crtc_update_dpms(crtc);
188 intel_crt_set_dpms(encoder, mode);
190 intel_crt_set_dpms(encoder, mode);
192 intel_crtc_update_dpms(crtc);
195 intel_modeset_check_state(connector->dev);
198 static int intel_crt_mode_valid(struct drm_connector *connector,
199 struct drm_display_mode *mode)
201 struct drm_device *dev = connector->dev;
204 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
205 return MODE_NO_DBLESCAN;
207 if (mode->clock < 25000)
208 return MODE_CLOCK_LOW;
214 if (mode->clock > max_clock)
215 return MODE_CLOCK_HIGH;
217 /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
218 if (HAS_PCH_LPT(dev) &&
219 (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
220 return MODE_CLOCK_HIGH;
225 static bool intel_crt_compute_config(struct intel_encoder *encoder,
226 struct intel_crtc_config *pipe_config)
228 struct drm_device *dev = encoder->base.dev;
230 if (HAS_PCH_SPLIT(dev))
231 pipe_config->has_pch_encoder = true;
233 /* LPT FDI RX only supports 8bpc. */
234 if (HAS_PCH_LPT(dev))
235 pipe_config->pipe_bpp = 24;
240 static void intel_crt_mode_set(struct intel_encoder *encoder)
243 struct drm_device *dev = encoder->base.dev;
244 struct intel_crt *crt = intel_encoder_to_crt(encoder);
245 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
246 struct drm_i915_private *dev_priv = dev->dev_private;
247 struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
250 if (HAS_PCH_SPLIT(dev))
251 adpa = ADPA_HOTPLUG_BITS;
255 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
256 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
257 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
258 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
260 /* For CPT allow 3 pipe config, for others just use A or B */
261 if (HAS_PCH_LPT(dev))
262 ; /* Those bits don't exist here */
263 else if (HAS_PCH_CPT(dev))
264 adpa |= PORT_TRANS_SEL_CPT(crtc->pipe);
265 else if (crtc->pipe == 0)
266 adpa |= ADPA_PIPE_A_SELECT;
268 adpa |= ADPA_PIPE_B_SELECT;
270 if (!HAS_PCH_SPLIT(dev))
271 I915_WRITE(BCLRPAT(crtc->pipe), 0);
273 I915_WRITE(crt->adpa_reg, adpa);
276 static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
278 struct drm_device *dev = connector->dev;
279 struct intel_crt *crt = intel_attached_crt(connector);
280 struct drm_i915_private *dev_priv = dev->dev_private;
284 /* The first time through, trigger an explicit detection cycle */
285 if (crt->force_hotplug_required) {
286 bool turn_off_dac = HAS_PCH_SPLIT(dev);
289 crt->force_hotplug_required = 0;
291 save_adpa = adpa = I915_READ(crt->adpa_reg);
292 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
294 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
296 adpa &= ~ADPA_DAC_ENABLE;
298 I915_WRITE(crt->adpa_reg, adpa);
300 if (wait_for((I915_READ(crt->adpa_reg) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
302 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
305 I915_WRITE(crt->adpa_reg, save_adpa);
306 POSTING_READ(crt->adpa_reg);
310 /* Check the status to see if both blue and green are on now */
311 adpa = I915_READ(crt->adpa_reg);
312 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
316 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);
321 static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
323 struct drm_device *dev = connector->dev;
324 struct intel_crt *crt = intel_attached_crt(connector);
325 struct drm_i915_private *dev_priv = dev->dev_private;
330 save_adpa = adpa = I915_READ(crt->adpa_reg);
331 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
333 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
335 I915_WRITE(crt->adpa_reg, adpa);
337 if (wait_for((I915_READ(crt->adpa_reg) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
339 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
340 I915_WRITE(crt->adpa_reg, save_adpa);
343 /* Check the status to see if both blue and green are on now */
344 adpa = I915_READ(crt->adpa_reg);
345 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
350 DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);
352 /* FIXME: debug force function and remove */
359 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
361 * Not for i915G/i915GM
363 * \return true if CRT is connected.
364 * \return false if CRT is disconnected.
366 static bool intel_crt_detect_hotplug(struct drm_connector *connector)
368 struct drm_device *dev = connector->dev;
369 struct drm_i915_private *dev_priv = dev->dev_private;
370 u32 hotplug_en, orig, stat;
374 if (HAS_PCH_SPLIT(dev))
375 return intel_ironlake_crt_detect_hotplug(connector);
377 if (IS_VALLEYVIEW(dev))
378 return valleyview_crt_detect_hotplug(connector);
381 * On 4 series desktop, CRT detect sequence need to be done twice
382 * to get a reliable result.
385 if (IS_G4X(dev) && !IS_GM45(dev))
389 hotplug_en = orig = I915_READ(PORT_HOTPLUG_EN);
390 hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
392 for (i = 0; i < tries ; i++) {
393 /* turn on the FORCE_DETECT */
394 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
395 /* wait for FORCE_DETECT to go off */
396 if (wait_for((I915_READ(PORT_HOTPLUG_EN) &
397 CRT_HOTPLUG_FORCE_DETECT) == 0,
399 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
402 stat = I915_READ(PORT_HOTPLUG_STAT);
403 if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
406 /* clear the interrupt we just generated, if any */
407 I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
409 /* and put the bits back */
410 I915_WRITE(PORT_HOTPLUG_EN, orig);
415 static struct edid *intel_crt_get_edid(struct drm_connector *connector,
416 struct i2c_adapter *i2c)
420 edid = drm_get_edid(connector, i2c);
422 if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
423 DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
424 intel_gmbus_force_bit(i2c, true);
425 edid = drm_get_edid(connector, i2c);
426 intel_gmbus_force_bit(i2c, false);
432 /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
433 static int intel_crt_ddc_get_modes(struct drm_connector *connector,
434 struct i2c_adapter *adapter)
439 edid = intel_crt_get_edid(connector, adapter);
443 ret = intel_connector_update_modes(connector, edid);
449 static bool intel_crt_detect_ddc(struct drm_connector *connector)
451 struct intel_crt *crt = intel_attached_crt(connector);
452 struct drm_i915_private *dev_priv = crt->base.base.dev->dev_private;
454 struct i2c_adapter *i2c;
456 BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
458 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
459 edid = intel_crt_get_edid(connector, i2c);
462 bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
465 * This may be a DVI-I connector with a shared DDC
466 * link between analog and digital outputs, so we
467 * have to check the EDID input spec of the attached device.
470 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
474 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
476 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
484 static enum drm_connector_status
485 intel_crt_load_detect(struct intel_crt *crt)
487 struct drm_device *dev = crt->base.base.dev;
488 struct drm_i915_private *dev_priv = dev->dev_private;
489 uint32_t pipe = to_intel_crtc(crt->base.base.crtc)->pipe;
490 uint32_t save_bclrpat;
491 uint32_t save_vtotal;
492 uint32_t vtotal, vactive;
494 uint32_t vblank, vblank_start, vblank_end;
496 uint32_t bclrpat_reg;
500 uint32_t pipeconf_reg;
501 uint32_t pipe_dsl_reg;
503 enum drm_connector_status status;
505 DRM_DEBUG_KMS("starting load-detect on CRT\n");
507 bclrpat_reg = BCLRPAT(pipe);
508 vtotal_reg = VTOTAL(pipe);
509 vblank_reg = VBLANK(pipe);
510 vsync_reg = VSYNC(pipe);
511 pipeconf_reg = PIPECONF(pipe);
512 pipe_dsl_reg = PIPEDSL(pipe);
514 save_bclrpat = I915_READ(bclrpat_reg);
515 save_vtotal = I915_READ(vtotal_reg);
516 vblank = I915_READ(vblank_reg);
518 vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
519 vactive = (save_vtotal & 0x7ff) + 1;
521 vblank_start = (vblank & 0xfff) + 1;
522 vblank_end = ((vblank >> 16) & 0xfff) + 1;
524 /* Set the border color to purple. */
525 I915_WRITE(bclrpat_reg, 0x500050);
528 uint32_t pipeconf = I915_READ(pipeconf_reg);
529 I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
530 POSTING_READ(pipeconf_reg);
531 /* Wait for next Vblank to substitue
532 * border color for Color info */
533 intel_wait_for_vblank(dev, pipe);
534 st00 = I915_READ8(VGA_MSR_WRITE);
535 status = ((st00 & (1 << 4)) != 0) ?
536 connector_status_connected :
537 connector_status_disconnected;
539 I915_WRITE(pipeconf_reg, pipeconf);
541 bool restore_vblank = false;
545 * If there isn't any border, add some.
546 * Yes, this will flicker
548 if (vblank_start <= vactive && vblank_end >= vtotal) {
549 uint32_t vsync = I915_READ(vsync_reg);
550 uint32_t vsync_start = (vsync & 0xffff) + 1;
552 vblank_start = vsync_start;
553 I915_WRITE(vblank_reg,
555 ((vblank_end - 1) << 16));
556 restore_vblank = true;
558 /* sample in the vertical border, selecting the larger one */
559 if (vblank_start - vactive >= vtotal - vblank_end)
560 vsample = (vblank_start + vactive) >> 1;
562 vsample = (vtotal + vblank_end) >> 1;
565 * Wait for the border to be displayed
567 while (I915_READ(pipe_dsl_reg) >= vactive)
569 while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
572 * Watch ST00 for an entire scanline
578 /* Read the ST00 VGA status register */
579 st00 = I915_READ8(VGA_MSR_WRITE);
582 } while ((I915_READ(pipe_dsl_reg) == dsl));
584 /* restore vblank if necessary */
586 I915_WRITE(vblank_reg, vblank);
588 * If more than 3/4 of the scanline detected a monitor,
589 * then it is assumed to be present. This works even on i830,
590 * where there isn't any way to force the border color across
593 status = detect * 4 > count * 3 ?
594 connector_status_connected :
595 connector_status_disconnected;
598 /* Restore previous settings */
599 I915_WRITE(bclrpat_reg, save_bclrpat);
604 static enum drm_connector_status
605 intel_crt_detect(struct drm_connector *connector, bool force)
607 struct drm_device *dev = connector->dev;
608 struct intel_crt *crt = intel_attached_crt(connector);
609 enum drm_connector_status status;
610 struct intel_load_detect_pipe tmp;
612 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
613 connector->base.id, drm_get_connector_name(connector),
616 if (I915_HAS_HOTPLUG(dev)) {
617 /* We can not rely on the HPD pin always being correctly wired
618 * up, for example many KVM do not pass it through, and so
619 * only trust an assertion that the monitor is connected.
621 if (intel_crt_detect_hotplug(connector)) {
622 DRM_DEBUG_KMS("CRT detected via hotplug\n");
623 return connector_status_connected;
625 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
628 if (intel_crt_detect_ddc(connector))
629 return connector_status_connected;
631 /* Load detection is broken on HPD capable machines. Whoever wants a
632 * broken monitor (without edid) to work behind a broken kvm (that fails
633 * to have the right resistors for HP detection) needs to fix this up.
634 * For now just bail out. */
635 if (I915_HAS_HOTPLUG(dev))
636 return connector_status_disconnected;
639 return connector->status;
641 /* for pre-945g platforms use load detect */
642 if (intel_get_load_detect_pipe(connector, NULL, &tmp)) {
643 if (intel_crt_detect_ddc(connector))
644 status = connector_status_connected;
646 status = intel_crt_load_detect(crt);
647 intel_release_load_detect_pipe(connector, &tmp);
649 status = connector_status_unknown;
654 static void intel_crt_destroy(struct drm_connector *connector)
656 drm_sysfs_connector_remove(connector);
657 drm_connector_cleanup(connector);
661 static int intel_crt_get_modes(struct drm_connector *connector)
663 struct drm_device *dev = connector->dev;
664 struct drm_i915_private *dev_priv = dev->dev_private;
666 struct i2c_adapter *i2c;
668 i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
669 ret = intel_crt_ddc_get_modes(connector, i2c);
670 if (ret || !IS_G4X(dev))
673 /* Try to probe digital port for output in DVI-I -> VGA mode. */
674 i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PORT_DPB);
675 return intel_crt_ddc_get_modes(connector, i2c);
678 static int intel_crt_set_property(struct drm_connector *connector,
679 struct drm_property *property,
685 static void intel_crt_reset(struct drm_connector *connector)
687 struct drm_device *dev = connector->dev;
688 struct drm_i915_private *dev_priv = dev->dev_private;
689 struct intel_crt *crt = intel_attached_crt(connector);
691 if (INTEL_INFO(dev)->gen >= 5) {
694 adpa = I915_READ(crt->adpa_reg);
695 adpa &= ~ADPA_CRT_HOTPLUG_MASK;
696 adpa |= ADPA_HOTPLUG_BITS;
697 I915_WRITE(crt->adpa_reg, adpa);
698 POSTING_READ(crt->adpa_reg);
700 DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa);
701 crt->force_hotplug_required = 1;
707 * Routines for controlling stuff on the analog port
710 static const struct drm_connector_funcs intel_crt_connector_funcs = {
711 .reset = intel_crt_reset,
712 .dpms = intel_crt_dpms,
713 .detect = intel_crt_detect,
714 .fill_modes = drm_helper_probe_single_connector_modes,
715 .destroy = intel_crt_destroy,
716 .set_property = intel_crt_set_property,
719 static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
720 .mode_valid = intel_crt_mode_valid,
721 .get_modes = intel_crt_get_modes,
722 .best_encoder = intel_best_encoder,
725 static const struct drm_encoder_funcs intel_crt_enc_funcs = {
726 .destroy = intel_encoder_destroy,
729 static int __init intel_no_crt_dmi_callback(const struct dmi_system_id *id)
731 DRM_INFO("Skipping CRT initialization for %s\n", id->ident);
735 static const struct dmi_system_id intel_no_crt[] = {
737 .callback = intel_no_crt_dmi_callback,
740 DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
741 DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
747 void intel_crt_init(struct drm_device *dev)
749 struct drm_connector *connector;
750 struct intel_crt *crt;
751 struct intel_connector *intel_connector;
752 struct drm_i915_private *dev_priv = dev->dev_private;
754 /* Skip machines without VGA that falsely report hotplug events */
755 if (dmi_check_system(intel_no_crt))
758 crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
762 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
763 if (!intel_connector) {
768 connector = &intel_connector->base;
769 crt->connector = intel_connector;
770 drm_connector_init(dev, &intel_connector->base,
771 &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
773 drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs,
774 DRM_MODE_ENCODER_DAC);
776 intel_connector_attach_encoder(intel_connector, &crt->base);
778 crt->base.type = INTEL_OUTPUT_ANALOG;
779 crt->base.cloneable = true;
781 crt->base.crtc_mask = (1 << 0);
783 crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
786 connector->interlace_allowed = 0;
788 connector->interlace_allowed = 1;
789 connector->doublescan_allowed = 0;
791 if (HAS_PCH_SPLIT(dev))
792 crt->adpa_reg = PCH_ADPA;
793 else if (IS_VALLEYVIEW(dev))
794 crt->adpa_reg = VLV_ADPA;
796 crt->adpa_reg = ADPA;
798 crt->base.compute_config = intel_crt_compute_config;
799 crt->base.mode_set = intel_crt_mode_set;
800 crt->base.disable = intel_disable_crt;
801 crt->base.enable = intel_enable_crt;
802 crt->base.get_config = intel_crt_get_config;
803 if (I915_HAS_HOTPLUG(dev))
804 crt->base.hpd_pin = HPD_CRT;
806 crt->base.get_hw_state = intel_ddi_get_hw_state;
808 crt->base.get_hw_state = intel_crt_get_hw_state;
809 intel_connector->get_hw_state = intel_connector_get_hw_state;
811 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
813 drm_sysfs_connector_add(connector);
815 if (!I915_HAS_HOTPLUG(dev))
816 intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
819 * Configure the automatic hotplug detection stuff
821 crt->force_hotplug_required = 0;
824 * TODO: find a proper way to discover whether we need to set the the
825 * polarity and link reversal bits or not, instead of relying on the
828 if (HAS_PCH_LPT(dev)) {
829 u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT |
830 FDI_RX_LINK_REVERSAL_OVERRIDE;
832 dev_priv->fdi_rx_config = I915_READ(_FDI_RXA_CTL) & fdi_config;