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);