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/delay.h>
34 #include "intel_drv.h"
38 struct intel_hdmi_priv
{
44 static void intel_hdmi_mode_set(struct drm_encoder
*encoder
,
45 struct drm_display_mode
*mode
,
46 struct drm_display_mode
*adjusted_mode
)
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
;
56 sdvox
= SDVO_ENCODING_HDMI
|
58 SDVO_VSYNC_ACTIVE_HIGH
|
59 SDVO_HSYNC_ACTIVE_HIGH
|
60 SDVO_NULL_PACKETS_DURING_VSYNC
;
62 if (hdmi_priv
->has_hdmi_sink
)
63 sdvox
|= SDVO_AUDIO_ENABLE
;
65 if (intel_crtc
->pipe
== 1)
66 sdvox
|= SDVO_PIPE_B_SELECT
;
68 I915_WRITE(hdmi_priv
->sdvox_reg
, sdvox
);
69 POSTING_READ(hdmi_priv
->sdvox_reg
);
72 static void intel_hdmi_dpms(struct drm_encoder
*encoder
, int mode
)
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
;
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
);
84 temp
= I915_READ(hdmi_priv
->sdvox_reg
);
85 I915_WRITE(hdmi_priv
->sdvox_reg
, temp
| SDVO_ENABLE
);
87 POSTING_READ(hdmi_priv
->sdvox_reg
);
90 static void intel_hdmi_save(struct drm_connector
*connector
)
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
;
97 hdmi_priv
->save_SDVOX
= I915_READ(hdmi_priv
->sdvox_reg
);
100 static void intel_hdmi_restore(struct drm_connector
*connector
)
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
;
107 I915_WRITE(hdmi_priv
->sdvox_reg
, hdmi_priv
->save_SDVOX
);
108 POSTING_READ(hdmi_priv
->sdvox_reg
);
111 static int intel_hdmi_mode_valid(struct drm_connector
*connector
,
112 struct drm_display_mode
*mode
)
114 if (mode
->clock
> 165000)
115 return MODE_CLOCK_HIGH
;
116 if (mode
->clock
< 20000)
117 return MODE_CLOCK_HIGH
;
119 if (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)
120 return MODE_NO_DBLESCAN
;
125 static bool intel_hdmi_mode_fixup(struct drm_encoder
*encoder
,
126 struct drm_display_mode
*mode
,
127 struct drm_display_mode
*adjusted_mode
)
133 intel_hdmi_sink_detect(struct drm_connector
*connector
)
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
;
139 edid
= drm_get_edid(&intel_output
->base
,
140 &intel_output
->ddc_bus
->adapter
);
142 hdmi_priv
->has_hdmi_sink
= drm_detect_hdmi_monitor(edid
);
144 intel_output
->base
.display_info
.raw_edid
= NULL
;
148 static enum drm_connector_status
149 igdng_hdmi_detect(struct drm_connector
*connector
)
151 struct intel_output
*intel_output
= to_intel_output(connector
);
152 struct intel_hdmi_priv
*hdmi_priv
= intel_output
->dev_priv
;
154 /* FIXME hotplug detect */
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
;
161 return connector_status_disconnected
;
164 static enum drm_connector_status
165 intel_hdmi_detect(struct drm_connector
*connector
)
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
;
174 return igdng_hdmi_detect(connector
);
176 temp
= I915_READ(PORT_HOTPLUG_EN
);
178 switch (hdmi_priv
->sdvox_reg
) {
180 temp
|= HDMIB_HOTPLUG_INT_EN
;
183 temp
|= HDMIC_HOTPLUG_INT_EN
;
186 return connector_status_unknown
;
189 I915_WRITE(PORT_HOTPLUG_EN
, temp
);
191 POSTING_READ(PORT_HOTPLUG_EN
);
193 switch (hdmi_priv
->sdvox_reg
) {
195 bit
= HDMIB_HOTPLUG_INT_STATUS
;
198 bit
= HDMIC_HOTPLUG_INT_STATUS
;
201 return connector_status_unknown
;
204 if ((I915_READ(PORT_HOTPLUG_STAT
) & bit
) != 0) {
205 intel_hdmi_sink_detect(connector
);
206 return connector_status_connected
;
208 return connector_status_disconnected
;
211 static int intel_hdmi_get_modes(struct drm_connector
*connector
)
213 struct intel_output
*intel_output
= to_intel_output(connector
);
215 /* We should parse the EDID data and find out if it's an HDMI sink so
216 * we can send audio to it.
219 return intel_ddc_get_modes(intel_output
);
222 static void intel_hdmi_destroy(struct drm_connector
*connector
)
224 struct intel_output
*intel_output
= to_intel_output(connector
);
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
);
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
,
241 static const struct drm_connector_funcs intel_hdmi_connector_funcs
= {
242 .dpms
= drm_helper_connector_dpms
,
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
,
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
,
256 static void intel_hdmi_enc_destroy(struct drm_encoder
*encoder
)
258 drm_encoder_cleanup(encoder
);
261 static const struct drm_encoder_funcs intel_hdmi_enc_funcs
= {
262 .destroy
= intel_hdmi_enc_destroy
,
266 void intel_hdmi_init(struct drm_device
*dev
, int sdvox_reg
)
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
;
273 intel_output
= kcalloc(sizeof(struct intel_output
) +
274 sizeof(struct intel_hdmi_priv
), 1, GFP_KERNEL
);
277 hdmi_priv
= (struct intel_hdmi_priv
*)(intel_output
+ 1);
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
);
284 intel_output
->type
= INTEL_OUTPUT_HDMI
;
286 connector
->interlace_allowed
= 0;
287 connector
->doublescan_allowed
= 0;
289 /* Set up the DDC bus. */
290 if (sdvox_reg
== SDVOB
)
291 intel_output
->ddc_bus
= intel_i2c_create(dev
, GPIOE
, "HDMIB");
292 else if (sdvox_reg
== SDVOC
)
293 intel_output
->ddc_bus
= intel_i2c_create(dev
, GPIOD
, "HDMIC");
294 else if (sdvox_reg
== HDMIB
)
295 intel_output
->ddc_bus
= intel_i2c_create(dev
, PCH_GPIOE
,
297 else if (sdvox_reg
== HDMIC
)
298 intel_output
->ddc_bus
= intel_i2c_create(dev
, PCH_GPIOD
,
300 else if (sdvox_reg
== HDMID
)
301 intel_output
->ddc_bus
= intel_i2c_create(dev
, PCH_GPIOF
,
304 if (!intel_output
->ddc_bus
)
307 hdmi_priv
->sdvox_reg
= sdvox_reg
;
308 intel_output
->dev_priv
= hdmi_priv
;
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
);
314 drm_mode_connector_attach_encoder(&intel_output
->base
,
316 drm_sysfs_connector_add(connector
);
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.
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);
330 drm_connector_cleanup(connector
);