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;
46 static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
48 return container_of(encoder, struct intel_hdmi, base.base);
51 static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
53 return container_of(intel_attached_encoder(connector),
54 struct intel_hdmi, base);
57 static void intel_hdmi_mode_set(struct drm_encoder *encoder,
58 struct drm_display_mode *mode,
59 struct drm_display_mode *adjusted_mode)
61 struct drm_device *dev = encoder->dev;
62 struct drm_i915_private *dev_priv = dev->dev_private;
63 struct drm_crtc *crtc = encoder->crtc;
64 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
65 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
68 sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
69 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
70 sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
71 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
72 sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
74 if (intel_hdmi->has_hdmi_sink) {
75 sdvox |= SDVO_AUDIO_ENABLE;
77 sdvox |= HDMI_MODE_SELECT;
80 if (intel_crtc->pipe == 1) {
82 sdvox |= PORT_TRANS_B_SEL_CPT;
84 sdvox |= SDVO_PIPE_B_SELECT;
87 I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
88 POSTING_READ(intel_hdmi->sdvox_reg);
91 static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
93 struct drm_device *dev = encoder->dev;
94 struct drm_i915_private *dev_priv = dev->dev_private;
95 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
98 temp = I915_READ(intel_hdmi->sdvox_reg);
100 /* HW workaround, need to toggle enable bit off and on for 12bpc, but
101 * we do this anyway which shows more stable in testing.
103 if (HAS_PCH_SPLIT(dev)) {
104 I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
105 POSTING_READ(intel_hdmi->sdvox_reg);
108 if (mode != DRM_MODE_DPMS_ON) {
109 temp &= ~SDVO_ENABLE;
114 I915_WRITE(intel_hdmi->sdvox_reg, temp);
115 POSTING_READ(intel_hdmi->sdvox_reg);
117 /* HW workaround, need to write this twice for issue that may result
118 * in first write getting masked.
120 if (HAS_PCH_SPLIT(dev)) {
121 I915_WRITE(intel_hdmi->sdvox_reg, temp);
122 POSTING_READ(intel_hdmi->sdvox_reg);
126 static int intel_hdmi_mode_valid(struct drm_connector *connector,
127 struct drm_display_mode *mode)
129 if (mode->clock > 165000)
130 return MODE_CLOCK_HIGH;
131 if (mode->clock < 20000)
132 return MODE_CLOCK_HIGH;
134 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
135 return MODE_NO_DBLESCAN;
140 static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
141 struct drm_display_mode *mode,
142 struct drm_display_mode *adjusted_mode)
147 static enum drm_connector_status
148 intel_hdmi_detect(struct drm_connector *connector)
150 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
151 struct edid *edid = NULL;
152 enum drm_connector_status status = connector_status_disconnected;
154 intel_hdmi->has_hdmi_sink = false;
155 edid = drm_get_edid(connector, intel_hdmi->base.ddc_bus);
158 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
159 status = connector_status_connected;
160 intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
162 connector->display_info.raw_edid = NULL;
169 static int intel_hdmi_get_modes(struct drm_connector *connector)
171 struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
173 /* We should parse the EDID data and find out if it's an HDMI sink so
174 * we can send audio to it.
177 return intel_ddc_get_modes(connector, intel_hdmi->base.ddc_bus);
180 static void intel_hdmi_destroy(struct drm_connector *connector)
182 drm_sysfs_connector_remove(connector);
183 drm_connector_cleanup(connector);
187 static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
188 .dpms = intel_hdmi_dpms,
189 .mode_fixup = intel_hdmi_mode_fixup,
190 .prepare = intel_encoder_prepare,
191 .mode_set = intel_hdmi_mode_set,
192 .commit = intel_encoder_commit,
195 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
196 .dpms = drm_helper_connector_dpms,
197 .detect = intel_hdmi_detect,
198 .fill_modes = drm_helper_probe_single_connector_modes,
199 .destroy = intel_hdmi_destroy,
202 static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
203 .get_modes = intel_hdmi_get_modes,
204 .mode_valid = intel_hdmi_mode_valid,
205 .best_encoder = intel_best_encoder,
208 static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
209 .destroy = intel_encoder_destroy,
212 void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
214 struct drm_i915_private *dev_priv = dev->dev_private;
215 struct drm_connector *connector;
216 struct intel_encoder *intel_encoder;
217 struct intel_connector *intel_connector;
218 struct intel_hdmi *intel_hdmi;
220 intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
224 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
225 if (!intel_connector) {
230 intel_encoder = &intel_hdmi->base;
231 connector = &intel_connector->base;
232 drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
233 DRM_MODE_CONNECTOR_HDMIA);
234 drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
236 intel_encoder->type = INTEL_OUTPUT_HDMI;
238 connector->polled = DRM_CONNECTOR_POLL_HPD;
239 connector->interlace_allowed = 0;
240 connector->doublescan_allowed = 0;
241 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
243 /* Set up the DDC bus. */
244 if (sdvox_reg == SDVOB) {
245 intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
246 intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
248 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
249 } else if (sdvox_reg == SDVOC) {
250 intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
251 intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
253 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
254 } else if (sdvox_reg == HDMIB) {
255 intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
256 intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
258 dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
259 } else if (sdvox_reg == HDMIC) {
260 intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
261 intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
263 dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
264 } else if (sdvox_reg == HDMID) {
265 intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
266 intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
268 dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
270 if (!intel_encoder->ddc_bus)
273 intel_hdmi->sdvox_reg = sdvox_reg;
275 drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
276 DRM_MODE_ENCODER_TMDS);
277 drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
279 intel_connector_attach_encoder(intel_connector, intel_encoder);
280 drm_sysfs_connector_add(connector);
282 /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
283 * 0xd. Failure to do so will result in spurious interrupts being
284 * generated on the port when a cable is not attached.
286 if (IS_G4X(dev) && !IS_GM45(dev)) {
287 u32 temp = I915_READ(PEG_BAND_GAP_DATA);
288 I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
294 drm_connector_cleanup(connector);
296 kfree(intel_connector);