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7d57382e EA |
1 | /* |
2 | * Copyright 2006 Dave Airlie <airlied@linux.ie> | |
3 | * Copyright © 2006-2009 Intel Corporation | |
4 | * | |
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: | |
11 | * | |
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 | |
14 | * Software. | |
15 | * | |
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. | |
23 | * | |
24 | * Authors: | |
25 | * Eric Anholt <eric@anholt.net> | |
26 | * Jesse Barnes <jesse.barnes@intel.com> | |
27 | */ | |
28 | ||
29 | #include <linux/i2c.h> | |
30 | #include <linux/delay.h> | |
31 | #include "drmP.h" | |
32 | #include "drm.h" | |
33 | #include "drm_crtc.h" | |
34 | #include "intel_drv.h" | |
35 | #include "i915_drm.h" | |
36 | #include "i915_drv.h" | |
37 | ||
38 | struct intel_hdmi_priv { | |
39 | u32 sdvox_reg; | |
40 | u32 save_SDVOX; | |
9dff6af8 | 41 | bool has_hdmi_sink; |
7d57382e EA |
42 | }; |
43 | ||
44 | static void intel_hdmi_mode_set(struct drm_encoder *encoder, | |
45 | struct drm_display_mode *mode, | |
46 | struct drm_display_mode *adjusted_mode) | |
47 | { | |
48 | struct drm_device *dev = encoder->dev; | |
49 | struct drm_i915_private *dev_priv = dev->dev_private; | |
50 | struct drm_crtc *crtc = encoder->crtc; | |
51 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
52 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
53 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
54 | u32 sdvox; | |
55 | ||
56 | sdvox = SDVO_ENCODING_HDMI | | |
57 | SDVO_BORDER_ENABLE | | |
58 | SDVO_VSYNC_ACTIVE_HIGH | | |
30ad48b7 ZW |
59 | SDVO_HSYNC_ACTIVE_HIGH | |
60 | SDVO_NULL_PACKETS_DURING_VSYNC; | |
7d57382e EA |
61 | |
62 | if (hdmi_priv->has_hdmi_sink) | |
63 | sdvox |= SDVO_AUDIO_ENABLE; | |
64 | ||
65 | if (intel_crtc->pipe == 1) | |
66 | sdvox |= SDVO_PIPE_B_SELECT; | |
67 | ||
68 | I915_WRITE(hdmi_priv->sdvox_reg, sdvox); | |
69 | POSTING_READ(hdmi_priv->sdvox_reg); | |
70 | } | |
71 | ||
72 | static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode) | |
73 | { | |
74 | struct drm_device *dev = encoder->dev; | |
75 | struct drm_i915_private *dev_priv = dev->dev_private; | |
76 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
77 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
78 | u32 temp; | |
79 | ||
80 | if (mode != DRM_MODE_DPMS_ON) { | |
81 | temp = I915_READ(hdmi_priv->sdvox_reg); | |
82 | I915_WRITE(hdmi_priv->sdvox_reg, temp & ~SDVO_ENABLE); | |
83 | } else { | |
84 | temp = I915_READ(hdmi_priv->sdvox_reg); | |
85 | I915_WRITE(hdmi_priv->sdvox_reg, temp | SDVO_ENABLE); | |
86 | } | |
87 | POSTING_READ(hdmi_priv->sdvox_reg); | |
88 | } | |
89 | ||
90 | static void intel_hdmi_save(struct drm_connector *connector) | |
91 | { | |
92 | struct drm_device *dev = connector->dev; | |
93 | struct drm_i915_private *dev_priv = dev->dev_private; | |
94 | struct intel_output *intel_output = to_intel_output(connector); | |
95 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
96 | ||
97 | hdmi_priv->save_SDVOX = I915_READ(hdmi_priv->sdvox_reg); | |
98 | } | |
99 | ||
100 | static void intel_hdmi_restore(struct drm_connector *connector) | |
101 | { | |
102 | struct drm_device *dev = connector->dev; | |
103 | struct drm_i915_private *dev_priv = dev->dev_private; | |
104 | struct intel_output *intel_output = to_intel_output(connector); | |
105 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
106 | ||
107 | I915_WRITE(hdmi_priv->sdvox_reg, hdmi_priv->save_SDVOX); | |
108 | POSTING_READ(hdmi_priv->sdvox_reg); | |
109 | } | |
110 | ||
111 | static int intel_hdmi_mode_valid(struct drm_connector *connector, | |
112 | struct drm_display_mode *mode) | |
113 | { | |
114 | if (mode->clock > 165000) | |
115 | return MODE_CLOCK_HIGH; | |
116 | if (mode->clock < 20000) | |
117 | return MODE_CLOCK_HIGH; | |
118 | ||
119 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) | |
120 | return MODE_NO_DBLESCAN; | |
121 | ||
122 | return MODE_OK; | |
123 | } | |
124 | ||
125 | static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder, | |
126 | struct drm_display_mode *mode, | |
127 | struct drm_display_mode *adjusted_mode) | |
128 | { | |
129 | return true; | |
130 | } | |
131 | ||
9dff6af8 ML |
132 | static void |
133 | intel_hdmi_sink_detect(struct drm_connector *connector) | |
134 | { | |
135 | struct intel_output *intel_output = to_intel_output(connector); | |
136 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
137 | struct edid *edid = NULL; | |
138 | ||
139 | edid = drm_get_edid(&intel_output->base, | |
140 | &intel_output->ddc_bus->adapter); | |
141 | if (edid != NULL) { | |
142 | hdmi_priv->has_hdmi_sink = drm_detect_hdmi_monitor(edid); | |
143 | kfree(edid); | |
144 | intel_output->base.display_info.raw_edid = NULL; | |
145 | } | |
146 | } | |
147 | ||
30ad48b7 ZW |
148 | static enum drm_connector_status |
149 | igdng_hdmi_detect(struct drm_connector *connector) | |
150 | { | |
151 | struct intel_output *intel_output = to_intel_output(connector); | |
152 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
153 | ||
154 | /* FIXME hotplug detect */ | |
155 | ||
156 | hdmi_priv->has_hdmi_sink = false; | |
157 | intel_hdmi_sink_detect(connector); | |
158 | if (hdmi_priv->has_hdmi_sink) | |
159 | return connector_status_connected; | |
160 | else | |
161 | return connector_status_disconnected; | |
162 | } | |
163 | ||
7d57382e EA |
164 | static enum drm_connector_status |
165 | intel_hdmi_detect(struct drm_connector *connector) | |
166 | { | |
167 | struct drm_device *dev = connector->dev; | |
168 | struct drm_i915_private *dev_priv = dev->dev_private; | |
169 | struct intel_output *intel_output = to_intel_output(connector); | |
170 | struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv; | |
171 | u32 temp, bit; | |
172 | ||
30ad48b7 ZW |
173 | if (IS_IGDNG(dev)) |
174 | return igdng_hdmi_detect(connector); | |
175 | ||
7d57382e EA |
176 | temp = I915_READ(PORT_HOTPLUG_EN); |
177 | ||
9d2949a4 ML |
178 | switch (hdmi_priv->sdvox_reg) { |
179 | case SDVOB: | |
180 | temp |= HDMIB_HOTPLUG_INT_EN; | |
181 | break; | |
182 | case SDVOC: | |
183 | temp |= HDMIC_HOTPLUG_INT_EN; | |
184 | break; | |
185 | default: | |
186 | return connector_status_unknown; | |
187 | } | |
188 | ||
189 | I915_WRITE(PORT_HOTPLUG_EN, temp); | |
7d57382e EA |
190 | |
191 | POSTING_READ(PORT_HOTPLUG_EN); | |
192 | ||
193 | switch (hdmi_priv->sdvox_reg) { | |
194 | case SDVOB: | |
195 | bit = HDMIB_HOTPLUG_INT_STATUS; | |
196 | break; | |
197 | case SDVOC: | |
198 | bit = HDMIC_HOTPLUG_INT_STATUS; | |
199 | break; | |
200 | default: | |
201 | return connector_status_unknown; | |
202 | } | |
203 | ||
9dff6af8 ML |
204 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) != 0) { |
205 | intel_hdmi_sink_detect(connector); | |
7d57382e | 206 | return connector_status_connected; |
9dff6af8 | 207 | } else |
7d57382e EA |
208 | return connector_status_disconnected; |
209 | } | |
210 | ||
211 | static int intel_hdmi_get_modes(struct drm_connector *connector) | |
212 | { | |
213 | struct intel_output *intel_output = to_intel_output(connector); | |
214 | ||
215 | /* We should parse the EDID data and find out if it's an HDMI sink so | |
216 | * we can send audio to it. | |
217 | */ | |
218 | ||
219 | return intel_ddc_get_modes(intel_output); | |
220 | } | |
221 | ||
222 | static void intel_hdmi_destroy(struct drm_connector *connector) | |
223 | { | |
224 | struct intel_output *intel_output = to_intel_output(connector); | |
225 | ||
226 | if (intel_output->i2c_bus) | |
227 | intel_i2c_destroy(intel_output->i2c_bus); | |
228 | drm_sysfs_connector_remove(connector); | |
229 | drm_connector_cleanup(connector); | |
230 | kfree(intel_output); | |
231 | } | |
232 | ||
233 | static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = { | |
234 | .dpms = intel_hdmi_dpms, | |
235 | .mode_fixup = intel_hdmi_mode_fixup, | |
236 | .prepare = intel_encoder_prepare, | |
237 | .mode_set = intel_hdmi_mode_set, | |
238 | .commit = intel_encoder_commit, | |
239 | }; | |
240 | ||
241 | static const struct drm_connector_funcs intel_hdmi_connector_funcs = { | |
c9fb15f6 | 242 | .dpms = drm_helper_connector_dpms, |
7d57382e EA |
243 | .save = intel_hdmi_save, |
244 | .restore = intel_hdmi_restore, | |
245 | .detect = intel_hdmi_detect, | |
246 | .fill_modes = drm_helper_probe_single_connector_modes, | |
247 | .destroy = intel_hdmi_destroy, | |
248 | }; | |
249 | ||
250 | static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = { | |
251 | .get_modes = intel_hdmi_get_modes, | |
252 | .mode_valid = intel_hdmi_mode_valid, | |
253 | .best_encoder = intel_best_encoder, | |
254 | }; | |
255 | ||
256 | static void intel_hdmi_enc_destroy(struct drm_encoder *encoder) | |
257 | { | |
258 | drm_encoder_cleanup(encoder); | |
259 | } | |
260 | ||
261 | static const struct drm_encoder_funcs intel_hdmi_enc_funcs = { | |
262 | .destroy = intel_hdmi_enc_destroy, | |
263 | }; | |
264 | ||
265 | ||
266 | void intel_hdmi_init(struct drm_device *dev, int sdvox_reg) | |
267 | { | |
268 | struct drm_i915_private *dev_priv = dev->dev_private; | |
269 | struct drm_connector *connector; | |
270 | struct intel_output *intel_output; | |
271 | struct intel_hdmi_priv *hdmi_priv; | |
272 | ||
273 | intel_output = kcalloc(sizeof(struct intel_output) + | |
274 | sizeof(struct intel_hdmi_priv), 1, GFP_KERNEL); | |
275 | if (!intel_output) | |
276 | return; | |
277 | hdmi_priv = (struct intel_hdmi_priv *)(intel_output + 1); | |
278 | ||
279 | connector = &intel_output->base; | |
280 | drm_connector_init(dev, connector, &intel_hdmi_connector_funcs, | |
281 | DRM_MODE_CONNECTOR_DVID); | |
282 | drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs); | |
283 | ||
284 | intel_output->type = INTEL_OUTPUT_HDMI; | |
285 | ||
286 | connector->interlace_allowed = 0; | |
287 | connector->doublescan_allowed = 0; | |
288 | ||
289 | /* Set up the DDC bus. */ | |
290 | if (sdvox_reg == SDVOB) | |
291 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "HDMIB"); | |
30ad48b7 | 292 | else if (sdvox_reg == SDVOC) |
7d57382e | 293 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "HDMIC"); |
30ad48b7 ZW |
294 | else if (sdvox_reg == HDMIB) |
295 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOE, | |
296 | "HDMIB"); | |
297 | else if (sdvox_reg == HDMIC) | |
298 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOD, | |
299 | "HDMIC"); | |
300 | else if (sdvox_reg == HDMID) | |
301 | intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOF, | |
302 | "HDMID"); | |
7d57382e EA |
303 | |
304 | if (!intel_output->ddc_bus) | |
305 | goto err_connector; | |
306 | ||
307 | hdmi_priv->sdvox_reg = sdvox_reg; | |
308 | intel_output->dev_priv = hdmi_priv; | |
309 | ||
310 | drm_encoder_init(dev, &intel_output->enc, &intel_hdmi_enc_funcs, | |
311 | DRM_MODE_ENCODER_TMDS); | |
312 | drm_encoder_helper_add(&intel_output->enc, &intel_hdmi_helper_funcs); | |
313 | ||
314 | drm_mode_connector_attach_encoder(&intel_output->base, | |
315 | &intel_output->enc); | |
316 | drm_sysfs_connector_add(connector); | |
317 | ||
318 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written | |
319 | * 0xd. Failure to do so will result in spurious interrupts being | |
320 | * generated on the port when a cable is not attached. | |
321 | */ | |
322 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
323 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
324 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
325 | } | |
326 | ||
327 | return; | |
328 | ||
329 | err_connector: | |
330 | drm_connector_cleanup(connector); | |
331 | kfree(intel_output); | |
332 | ||
333 | return; | |
334 | } |