2 * Copyright 2006 Dave Airlie <airlied@linux.ie>
3 * Copyright © 2006-2009 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Eric Anholt <eric@anholt.net>
26 * Jesse Barnes <jesse.barnes@intel.com>
29 #include <linux/i2c.h>
30 #include <linux/slab.h>
31 #include <linux/delay.h>
36 #include "intel_drv.h"
41 struct intel_encoder base;
47 enum hdmi_force_audio force_audio;
48 void (*write_infoframe)(struct drm_encoder *encoder,
49 struct dip_infoframe *frame);
52 static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
54 return container_of(encoder, struct intel_hdmi, base.base);
57 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
59 return container_of(intel_attached_encoder(connector),
60 struct intel_hdmi, base);
63 void intel_dip_infoframe_csum(struct dip_infoframe *frame)
65 uint8_t *data = (uint8_t *)frame;
72 for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
75 frame->checksum = 0x100 - sum;
78 static u32 intel_infoframe_index(struct dip_infoframe *frame)
82 switch (frame->type) {
84 flags |= VIDEO_DIP_SELECT_AVI;
87 flags |= VIDEO_DIP_SELECT_SPD;
90 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
97 static u32 intel_infoframe_enable(struct dip_infoframe *frame)
101 switch (frame->type) {
103 flags |= VIDEO_DIP_ENABLE_AVI;
106 flags |= VIDEO_DIP_ENABLE_SPD;
109 DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
116 static void i9xx_write_infoframe(struct drm_encoder *encoder,
117 struct dip_infoframe *frame)
119 uint32_t *data = (uint32_t *)frame;
120 struct drm_device *dev = encoder->dev;
121 struct drm_i915_private *dev_priv = dev->dev_private;
122 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
123 u32 val = I915_READ(VIDEO_DIP_CTL);
124 unsigned i, len = DIP_HEADER_SIZE + frame->len;
127 /* XXX first guess at handling video port, is this corrent? */
128 val &= ~VIDEO_DIP_PORT_MASK;
129 if (intel_hdmi->sdvox_reg == SDVOB)
130 val |= VIDEO_DIP_PORT_B;
131 else if (intel_hdmi->sdvox_reg == SDVOC)
132 val |= VIDEO_DIP_PORT_C;
136 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
137 val |= intel_infoframe_index(frame);
139 val &= ~intel_infoframe_enable(frame);
140 val |= VIDEO_DIP_ENABLE;
142 I915_WRITE(VIDEO_DIP_CTL, val);
144 for (i = 0; i < len; i += 4) {
145 I915_WRITE(VIDEO_DIP_DATA, *data);
149 val |= intel_infoframe_enable(frame);
150 val &= ~VIDEO_DIP_FREQ_MASK;
151 val |= VIDEO_DIP_FREQ_VSYNC;
153 I915_WRITE(VIDEO_DIP_CTL, val);
156 static void ibx_write_infoframe(struct drm_encoder *encoder,
157 struct dip_infoframe *frame)
159 uint32_t *data = (uint32_t *)frame;
160 struct drm_device *dev = encoder->dev;
161 struct drm_i915_private *dev_priv = dev->dev_private;
162 struct drm_crtc *crtc = encoder->crtc;
163 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
164 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
165 int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
166 unsigned i, len = DIP_HEADER_SIZE + frame->len;
167 u32 val = I915_READ(reg);
169 val &= ~VIDEO_DIP_PORT_MASK;
170 switch (intel_hdmi->sdvox_reg) {
172 val |= VIDEO_DIP_PORT_B;
175 val |= VIDEO_DIP_PORT_C;
178 val |= VIDEO_DIP_PORT_D;
184 intel_wait_for_vblank(dev, intel_crtc->pipe);
186 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
187 val |= intel_infoframe_index(frame);
189 val &= ~intel_infoframe_enable(frame);
190 val |= VIDEO_DIP_ENABLE;
192 I915_WRITE(reg, val);
194 for (i = 0; i < len; i += 4) {
195 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
199 val |= intel_infoframe_enable(frame);
200 val &= ~VIDEO_DIP_FREQ_MASK;
201 val |= VIDEO_DIP_FREQ_VSYNC;
203 I915_WRITE(reg, val);
206 static void cpt_write_infoframe(struct drm_encoder *encoder,
207 struct dip_infoframe *frame)
209 uint32_t *data = (uint32_t *)frame;
210 struct drm_device *dev = encoder->dev;
211 struct drm_i915_private *dev_priv = dev->dev_private;
212 struct drm_crtc *crtc = encoder->crtc;
213 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
214 int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
215 unsigned i, len = DIP_HEADER_SIZE + frame->len;
216 u32 val = I915_READ(reg);
218 intel_wait_for_vblank(dev, intel_crtc->pipe);
220 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
221 val |= intel_infoframe_index(frame);
223 /* The DIP control register spec says that we need to update the AVI
224 * infoframe without clearing its enable bit */
225 if (frame->type == DIP_TYPE_AVI)
226 val |= VIDEO_DIP_ENABLE_AVI;
228 val &= ~intel_infoframe_enable(frame);
230 val |= VIDEO_DIP_ENABLE;
232 I915_WRITE(reg, val);
234 for (i = 0; i < len; i += 4) {
235 I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
239 val |= intel_infoframe_enable(frame);
240 val &= ~VIDEO_DIP_FREQ_MASK;
241 val |= VIDEO_DIP_FREQ_VSYNC;
243 I915_WRITE(reg, val);
246 static void vlv_write_infoframe(struct drm_encoder *encoder,
247 struct dip_infoframe *frame)
249 uint32_t *data = (uint32_t *)frame;
250 struct drm_device *dev = encoder->dev;
251 struct drm_i915_private *dev_priv = dev->dev_private;
252 struct drm_crtc *crtc = encoder->crtc;
253 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
254 int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
255 unsigned i, len = DIP_HEADER_SIZE + frame->len;
256 u32 val = I915_READ(reg);
258 intel_wait_for_vblank(dev, intel_crtc->pipe);
260 val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
261 val |= intel_infoframe_index(frame);
263 val &= ~intel_infoframe_enable(frame);
264 val |= VIDEO_DIP_ENABLE;
266 I915_WRITE(reg, val);
268 for (i = 0; i < len; i += 4) {
269 I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
273 val |= intel_infoframe_enable(frame);
274 val &= ~VIDEO_DIP_FREQ_MASK;
275 val |= VIDEO_DIP_FREQ_VSYNC;
277 I915_WRITE(reg, val);
280 static void intel_set_infoframe(struct drm_encoder *encoder,
281 struct dip_infoframe *frame)
283 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
285 if (!intel_hdmi->has_hdmi_sink)
288 intel_dip_infoframe_csum(frame);
289 intel_hdmi->write_infoframe(encoder, frame);
292 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
293 struct drm_display_mode *adjusted_mode)
295 struct dip_infoframe avi_if = {
296 .type = DIP_TYPE_AVI,
297 .ver = DIP_VERSION_AVI,
301 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
302 avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
304 intel_set_infoframe(encoder, &avi_if);
307 static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
309 struct dip_infoframe spd_if;
311 memset(&spd_if, 0, sizeof(spd_if));
312 spd_if.type = DIP_TYPE_SPD;
313 spd_if.ver = DIP_VERSION_SPD;
314 spd_if.len = DIP_LEN_SPD;
315 strcpy(spd_if.body.spd.vn, "Intel");
316 strcpy(spd_if.body.spd.pd, "Integrated gfx");
317 spd_if.body.spd.sdi = DIP_SPD_PC;
319 intel_set_infoframe(encoder, &spd_if);
322 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
323 struct drm_display_mode *mode,
324 struct drm_display_mode *adjusted_mode)
326 struct drm_device *dev = encoder->dev;
327 struct drm_i915_private *dev_priv = dev->dev_private;
328 struct drm_crtc *crtc = encoder->crtc;
329 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
330 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
333 sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
334 if (!HAS_PCH_SPLIT(dev))
335 sdvox |= intel_hdmi->color_range;
336 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
337 sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
338 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
339 sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
341 if (intel_crtc->bpp > 24)
342 sdvox |= COLOR_FORMAT_12bpc;
344 sdvox |= COLOR_FORMAT_8bpc;
346 /* Required on CPT */
347 if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
348 sdvox |= HDMI_MODE_SELECT;
350 if (intel_hdmi->has_audio) {
351 DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
352 pipe_name(intel_crtc->pipe));
353 sdvox |= SDVO_AUDIO_ENABLE;
354 sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
355 intel_write_eld(encoder, adjusted_mode);
358 if (HAS_PCH_CPT(dev))
359 sdvox |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
360 else if (intel_crtc->pipe == 1)
361 sdvox |= SDVO_PIPE_B_SELECT;
363 I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
364 POSTING_READ(intel_hdmi->sdvox_reg);
366 intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
367 intel_hdmi_set_spd_infoframe(encoder);
370 static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
372 struct drm_device *dev = encoder->dev;
373 struct drm_i915_private *dev_priv = dev->dev_private;
374 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
376 u32 enable_bits = SDVO_ENABLE;
378 if (intel_hdmi->has_audio)
379 enable_bits |= SDVO_AUDIO_ENABLE;
381 temp = I915_READ(intel_hdmi->sdvox_reg);
383 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
384 * we do this anyway which shows more stable in testing.
386 if (HAS_PCH_SPLIT(dev)) {
387 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
388 POSTING_READ(intel_hdmi->sdvox_reg);
391 if (mode != DRM_MODE_DPMS_ON) {
392 temp &= ~enable_bits;
397 I915_WRITE(intel_hdmi->sdvox_reg, temp);
398 POSTING_READ(intel_hdmi->sdvox_reg);
400 /* HW workaround, need to write this twice for issue that may result
401 * in first write getting masked.
403 if (HAS_PCH_SPLIT(dev)) {
404 I915_WRITE(intel_hdmi->sdvox_reg, temp);
405 POSTING_READ(intel_hdmi->sdvox_reg);
409 static int intel_hdmi_mode_valid(struct drm_connector *connector,
410 struct drm_display_mode *mode)
412 if (mode->clock > 165000)
413 return MODE_CLOCK_HIGH;
414 if (mode->clock < 20000)
415 return MODE_CLOCK_LOW;
417 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
418 return MODE_NO_DBLESCAN;
423 static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
424 struct drm_display_mode *mode,
425 struct drm_display_mode *adjusted_mode)
430 static enum drm_connector_status
431 intel_hdmi_detect(struct drm_connector *connector, bool force)
433 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
434 struct drm_i915_private *dev_priv = connector->dev->dev_private;
436 enum drm_connector_status status = connector_status_disconnected;
438 intel_hdmi->has_hdmi_sink = false;
439 intel_hdmi->has_audio = false;
440 edid = drm_get_edid(connector,
441 intel_gmbus_get_adapter(dev_priv,
442 intel_hdmi->ddc_bus));
445 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
446 status = connector_status_connected;
447 if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
448 intel_hdmi->has_hdmi_sink =
449 drm_detect_hdmi_monitor(edid);
450 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
452 connector->display_info.raw_edid = NULL;
456 if (status == connector_status_connected) {
457 if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
458 intel_hdmi->has_audio =
459 (intel_hdmi->force_audio == HDMI_AUDIO_ON);
465 static int intel_hdmi_get_modes(struct drm_connector *connector)
467 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
468 struct drm_i915_private *dev_priv = connector->dev->dev_private;
470 /* We should parse the EDID data and find out if it's an HDMI sink so
471 * we can send audio to it.
474 return intel_ddc_get_modes(connector,
475 intel_gmbus_get_adapter(dev_priv,
476 intel_hdmi->ddc_bus));
480 intel_hdmi_detect_audio(struct drm_connector *connector)
482 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
483 struct drm_i915_private *dev_priv = connector->dev->dev_private;
485 bool has_audio = false;
487 edid = drm_get_edid(connector,
488 intel_gmbus_get_adapter(dev_priv,
489 intel_hdmi->ddc_bus));
491 if (edid->input & DRM_EDID_INPUT_DIGITAL)
492 has_audio = drm_detect_monitor_audio(edid);
494 connector->display_info.raw_edid = NULL;
502 intel_hdmi_set_property(struct drm_connector *connector,
503 struct drm_property *property,
506 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
507 struct drm_i915_private *dev_priv = connector->dev->dev_private;
510 ret = drm_connector_property_set_value(connector, property, val);
514 if (property == dev_priv->force_audio_property) {
515 enum hdmi_force_audio i = val;
518 if (i == intel_hdmi->force_audio)
521 intel_hdmi->force_audio = i;
523 if (i == HDMI_AUDIO_AUTO)
524 has_audio = intel_hdmi_detect_audio(connector);
526 has_audio = (i == HDMI_AUDIO_ON);
528 if (i == HDMI_AUDIO_OFF_DVI)
529 intel_hdmi->has_hdmi_sink = 0;
531 intel_hdmi->has_audio = has_audio;
535 if (property == dev_priv->broadcast_rgb_property) {
536 if (val == !!intel_hdmi->color_range)
539 intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
546 if (intel_hdmi->base.base.crtc) {
547 struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
548 drm_crtc_helper_set_mode(crtc, &crtc->mode,
556 static void intel_hdmi_destroy(struct drm_connector *connector)
558 drm_sysfs_connector_remove(connector);
559 drm_connector_cleanup(connector);
563 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
564 .dpms = intel_hdmi_dpms,
565 .mode_fixup = intel_hdmi_mode_fixup,
566 .prepare = intel_encoder_prepare,
567 .mode_set = intel_hdmi_mode_set,
568 .commit = intel_encoder_commit,
571 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
572 .dpms = drm_helper_connector_dpms,
573 .detect = intel_hdmi_detect,
574 .fill_modes = drm_helper_probe_single_connector_modes,
575 .set_property = intel_hdmi_set_property,
576 .destroy = intel_hdmi_destroy,
579 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
580 .get_modes = intel_hdmi_get_modes,
581 .mode_valid = intel_hdmi_mode_valid,
582 .best_encoder = intel_best_encoder,
585 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
586 .destroy = intel_encoder_destroy,
590 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
592 intel_attach_force_audio_property(connector);
593 intel_attach_broadcast_rgb_property(connector);
596 void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
598 struct drm_i915_private *dev_priv = dev->dev_private;
599 struct drm_connector *connector;
600 struct intel_encoder *intel_encoder;
601 struct intel_connector *intel_connector;
602 struct intel_hdmi *intel_hdmi;
605 intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
609 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
610 if (!intel_connector) {
615 intel_encoder = &intel_hdmi->base;
616 drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
617 DRM_MODE_ENCODER_TMDS);
619 connector = &intel_connector->base;
620 drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
621 DRM_MODE_CONNECTOR_HDMIA);
622 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
624 intel_encoder->type = INTEL_OUTPUT_HDMI;
626 connector->polled = DRM_CONNECTOR_POLL_HPD;
627 connector->interlace_allowed = 1;
628 connector->doublescan_allowed = 0;
629 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
631 /* Set up the DDC bus. */
632 if (sdvox_reg == SDVOB) {
633 intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
634 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
635 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
636 } else if (sdvox_reg == SDVOC) {
637 intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
638 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
639 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
640 } else if (sdvox_reg == HDMIB) {
641 intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
642 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
643 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
644 } else if (sdvox_reg == HDMIC) {
645 intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
646 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
647 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
648 } else if (sdvox_reg == HDMID) {
649 intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
650 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
651 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
654 intel_hdmi->sdvox_reg = sdvox_reg;
656 if (!HAS_PCH_SPLIT(dev)) {
657 intel_hdmi->write_infoframe = i9xx_write_infoframe;
658 I915_WRITE(VIDEO_DIP_CTL, 0);
659 } else if (IS_VALLEYVIEW(dev)) {
660 intel_hdmi->write_infoframe = vlv_write_infoframe;
662 I915_WRITE(VLV_TVIDEO_DIP_CTL(i), 0);
663 } else if (HAS_PCH_IBX(dev)) {
664 intel_hdmi->write_infoframe = ibx_write_infoframe;
666 I915_WRITE(TVIDEO_DIP_CTL(i), 0);
668 intel_hdmi->write_infoframe = cpt_write_infoframe;
670 I915_WRITE(TVIDEO_DIP_CTL(i), 0);
673 drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
675 intel_hdmi_add_properties(intel_hdmi, connector);
677 intel_connector_attach_encoder(intel_connector, intel_encoder);
678 drm_sysfs_connector_add(connector);
680 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
681 * 0xd. Failure to do so will result in spurious interrupts being
682 * generated on the port when a cable is not attached.
684 if (IS_G4X(dev) && !IS_GM45(dev)) {
685 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
686 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);