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 struct drm_property *force_audio_property;
50 static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
52 return container_of(encoder, struct intel_hdmi, base.base);
55 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
57 return container_of(intel_attached_encoder(connector),
58 struct intel_hdmi, base);
61 void intel_dip_infoframe_csum(struct dip_infoframe *avi_if)
63 uint8_t *data = (uint8_t *)avi_if;
70 for (i = 0; i < sizeof(*avi_if); i++)
73 avi_if->checksum = 0x100 - sum;
76 static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
78 struct dip_infoframe avi_if = {
80 .ver = DIP_VERSION_AVI,
83 uint32_t *data = (uint32_t *)&avi_if;
84 struct drm_device *dev = encoder->dev;
85 struct drm_i915_private *dev_priv = dev->dev_private;
86 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
90 if (!intel_hdmi->has_hdmi_sink)
93 /* XXX first guess at handling video port, is this corrent? */
94 if (intel_hdmi->sdvox_reg == SDVOB)
95 port = VIDEO_DIP_PORT_B;
96 else if (intel_hdmi->sdvox_reg == SDVOC)
97 port = VIDEO_DIP_PORT_C;
101 I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
102 VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC);
104 intel_dip_infoframe_csum(&avi_if);
105 for (i = 0; i < sizeof(avi_if); i += 4) {
106 I915_WRITE(VIDEO_DIP_DATA, *data);
110 I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
111 VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC |
112 VIDEO_DIP_ENABLE_AVI);
115 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
116 struct drm_display_mode *mode,
117 struct drm_display_mode *adjusted_mode)
119 struct drm_device *dev = encoder->dev;
120 struct drm_i915_private *dev_priv = dev->dev_private;
121 struct drm_crtc *crtc = encoder->crtc;
122 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
123 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
126 sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
127 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
128 sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
129 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
130 sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
132 /* Required on CPT */
133 if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
134 sdvox |= HDMI_MODE_SELECT;
136 if (intel_hdmi->has_audio) {
137 sdvox |= SDVO_AUDIO_ENABLE;
138 sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
141 if (intel_crtc->pipe == 1) {
142 if (HAS_PCH_CPT(dev))
143 sdvox |= PORT_TRANS_B_SEL_CPT;
145 sdvox |= SDVO_PIPE_B_SELECT;
148 I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
149 POSTING_READ(intel_hdmi->sdvox_reg);
151 intel_hdmi_set_avi_infoframe(encoder);
154 static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
156 struct drm_device *dev = encoder->dev;
157 struct drm_i915_private *dev_priv = dev->dev_private;
158 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
161 temp = I915_READ(intel_hdmi->sdvox_reg);
163 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
164 * we do this anyway which shows more stable in testing.
166 if (HAS_PCH_SPLIT(dev)) {
167 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
168 POSTING_READ(intel_hdmi->sdvox_reg);
171 if (mode != DRM_MODE_DPMS_ON) {
172 temp &= ~SDVO_ENABLE;
177 I915_WRITE(intel_hdmi->sdvox_reg, temp);
178 POSTING_READ(intel_hdmi->sdvox_reg);
180 /* HW workaround, need to write this twice for issue that may result
181 * in first write getting masked.
183 if (HAS_PCH_SPLIT(dev)) {
184 I915_WRITE(intel_hdmi->sdvox_reg, temp);
185 POSTING_READ(intel_hdmi->sdvox_reg);
189 static int intel_hdmi_mode_valid(struct drm_connector *connector,
190 struct drm_display_mode *mode)
192 if (mode->clock > 165000)
193 return MODE_CLOCK_HIGH;
194 if (mode->clock < 20000)
195 return MODE_CLOCK_HIGH;
197 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
198 return MODE_NO_DBLESCAN;
203 static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
204 struct drm_display_mode *mode,
205 struct drm_display_mode *adjusted_mode)
210 static enum drm_connector_status
211 intel_hdmi_detect(struct drm_connector *connector, bool force)
213 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
214 struct drm_i915_private *dev_priv = connector->dev->dev_private;
216 enum drm_connector_status status = connector_status_disconnected;
218 intel_hdmi->has_hdmi_sink = false;
219 intel_hdmi->has_audio = false;
220 edid = drm_get_edid(connector,
221 &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
224 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
225 status = connector_status_connected;
226 intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
227 intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
229 connector->display_info.raw_edid = NULL;
233 if (status == connector_status_connected) {
234 if (intel_hdmi->force_audio)
235 intel_hdmi->has_audio = intel_hdmi->force_audio > 0;
241 static int intel_hdmi_get_modes(struct drm_connector *connector)
243 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
244 struct drm_i915_private *dev_priv = connector->dev->dev_private;
246 /* We should parse the EDID data and find out if it's an HDMI sink so
247 * we can send audio to it.
250 return intel_ddc_get_modes(connector,
251 &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
255 intel_hdmi_set_property(struct drm_connector *connector,
256 struct drm_property *property,
259 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
262 ret = drm_connector_property_set_value(connector, property, val);
266 if (property == intel_hdmi->force_audio_property) {
267 if (val == intel_hdmi->force_audio)
270 intel_hdmi->force_audio = val;
272 if (val > 0 && intel_hdmi->has_audio)
274 if (val < 0 && !intel_hdmi->has_audio)
277 intel_hdmi->has_audio = val > 0;
284 if (intel_hdmi->base.base.crtc) {
285 struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
286 drm_crtc_helper_set_mode(crtc, &crtc->mode,
294 static void intel_hdmi_destroy(struct drm_connector *connector)
296 drm_sysfs_connector_remove(connector);
297 drm_connector_cleanup(connector);
301 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
302 .dpms = intel_hdmi_dpms,
303 .mode_fixup = intel_hdmi_mode_fixup,
304 .prepare = intel_encoder_prepare,
305 .mode_set = intel_hdmi_mode_set,
306 .commit = intel_encoder_commit,
309 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
310 .dpms = drm_helper_connector_dpms,
311 .detect = intel_hdmi_detect,
312 .fill_modes = drm_helper_probe_single_connector_modes,
313 .set_property = intel_hdmi_set_property,
314 .destroy = intel_hdmi_destroy,
317 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
318 .get_modes = intel_hdmi_get_modes,
319 .mode_valid = intel_hdmi_mode_valid,
320 .best_encoder = intel_best_encoder,
323 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
324 .destroy = intel_encoder_destroy,
328 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
330 struct drm_device *dev = connector->dev;
332 intel_hdmi->force_audio_property =
333 drm_property_create(dev, DRM_MODE_PROP_RANGE, "force_audio", 2);
334 if (intel_hdmi->force_audio_property) {
335 intel_hdmi->force_audio_property->values[0] = -1;
336 intel_hdmi->force_audio_property->values[1] = 1;
337 drm_connector_attach_property(connector, intel_hdmi->force_audio_property, 0);
341 void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
343 struct drm_i915_private *dev_priv = dev->dev_private;
344 struct drm_connector *connector;
345 struct intel_encoder *intel_encoder;
346 struct intel_connector *intel_connector;
347 struct intel_hdmi *intel_hdmi;
349 intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
353 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
354 if (!intel_connector) {
359 intel_encoder = &intel_hdmi->base;
360 drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
361 DRM_MODE_ENCODER_TMDS);
363 connector = &intel_connector->base;
364 drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
365 DRM_MODE_CONNECTOR_HDMIA);
366 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
368 intel_encoder->type = INTEL_OUTPUT_HDMI;
370 connector->polled = DRM_CONNECTOR_POLL_HPD;
371 connector->interlace_allowed = 0;
372 connector->doublescan_allowed = 0;
373 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
375 /* Set up the DDC bus. */
376 if (sdvox_reg == SDVOB) {
377 intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
378 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
379 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
380 } else if (sdvox_reg == SDVOC) {
381 intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
382 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
383 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
384 } else if (sdvox_reg == HDMIB) {
385 intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
386 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
387 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
388 } else if (sdvox_reg == HDMIC) {
389 intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
390 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
391 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
392 } else if (sdvox_reg == HDMID) {
393 intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
394 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
395 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
398 intel_hdmi->sdvox_reg = sdvox_reg;
400 drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
402 intel_hdmi_add_properties(intel_hdmi, connector);
404 intel_connector_attach_encoder(intel_connector, intel_encoder);
405 drm_sysfs_connector_add(connector);
407 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
408 * 0xd. Failure to do so will result in spurious interrupts being
409 * generated on the port when a cable is not attached.
411 if (IS_G4X(dev) && !IS_GM45(dev)) {
412 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
413 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);