[linux-2.6-block.git] / drivers / gpu / drm / i915 / intel_hdmi.c

/*
 * Copyright 2006 Dave Airlie <airlied@linux.ie>
 * Copyright © 2006-2009 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *	Eric Anholt <eric@anholt.net>
 *	Jesse Barnes <jesse.barnes@intel.com>
 */

#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_edid.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"

struct intel_hdmi {
	struct intel_encoder base;
	u32 sdvox_reg;
	int ddc_bus;
	bool has_hdmi_sink;
	bool has_audio;
	int force_audio;
	struct drm_property *force_audio_property;
};

static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
{
	return container_of(encoder, struct intel_hdmi, base.base);
}

static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
{
	return container_of(intel_attached_encoder(connector),
			    struct intel_hdmi, base);
}

static void intel_hdmi_mode_set(struct drm_encoder *encoder,
				struct drm_display_mode *mode,
				struct drm_display_mode *adjusted_mode)
{
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc = encoder->crtc;
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
	u32 sdvox;

	sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
		sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
		sdvox |= SDVO_HSYNC_ACTIVE_HIGH;

	/* Required on CPT */
	if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
		sdvox |= HDMI_MODE_SELECT;

	if (intel_hdmi->has_audio)
		sdvox |= SDVO_AUDIO_ENABLE;

	if (intel_crtc->pipe == 1) {
		if (HAS_PCH_CPT(dev))
			sdvox |= PORT_TRANS_B_SEL_CPT;
		else
			sdvox |= SDVO_PIPE_B_SELECT;
	}

	I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
	POSTING_READ(intel_hdmi->sdvox_reg);
}

static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
{
	struct drm_device *dev = encoder->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
	u32 temp;

	temp = I915_READ(intel_hdmi->sdvox_reg);

	/* HW workaround, need to toggle enable bit off and on for 12bpc, but
	 * we do this anyway which shows more stable in testing.
	 */
	if (HAS_PCH_SPLIT(dev)) {
		I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
		POSTING_READ(intel_hdmi->sdvox_reg);
	}

	if (mode != DRM_MODE_DPMS_ON) {
		temp &= ~SDVO_ENABLE;
	} else {
		temp |= SDVO_ENABLE;
	}

	I915_WRITE(intel_hdmi->sdvox_reg, temp);
	POSTING_READ(intel_hdmi->sdvox_reg);

	/* HW workaround, need to write this twice for issue that may result
	 * in first write getting masked.
	 */
	if (HAS_PCH_SPLIT(dev)) {
		I915_WRITE(intel_hdmi->sdvox_reg, temp);
		POSTING_READ(intel_hdmi->sdvox_reg);
	}
}

static int intel_hdmi_mode_valid(struct drm_connector *connector,
				 struct drm_display_mode *mode)
{
	if (mode->clock > 165000)
		return MODE_CLOCK_HIGH;
	if (mode->clock < 20000)
		return MODE_CLOCK_HIGH;

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

	return MODE_OK;
}

static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
				  struct drm_display_mode *mode,
				  struct drm_display_mode *adjusted_mode)
{
	return true;
}

static enum drm_connector_status
intel_hdmi_detect(struct drm_connector *connector, bool force)
{
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	struct edid *edid;
	enum drm_connector_status status = connector_status_disconnected;

	intel_hdmi->has_hdmi_sink = false;
	intel_hdmi->has_audio = false;
	edid = drm_get_edid(connector,
			    &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);

	if (edid) {
		if (edid->input & DRM_EDID_INPUT_DIGITAL) {
			status = connector_status_connected;
			intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
			intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
		}
		connector->display_info.raw_edid = NULL;
		kfree(edid);
	}

	if (status == connector_status_connected) {
		if (intel_hdmi->force_audio)
			intel_hdmi->has_audio = intel_hdmi->force_audio > 0;
	}

	return status;
}

static int intel_hdmi_get_modes(struct drm_connector *connector)
{
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
	struct drm_i915_private *dev_priv = connector->dev->dev_private;

	/* We should parse the EDID data and find out if it's an HDMI sink so
	 * we can send audio to it.
	 */

	return intel_ddc_get_modes(connector,
				   &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
}

static int
intel_hdmi_set_property(struct drm_connector *connector,
		      struct drm_property *property,
		      uint64_t val)
{
	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
	int ret;

	ret = drm_connector_property_set_value(connector, property, val);
	if (ret)
		return ret;

	if (property == intel_hdmi->force_audio_property) {
		if (val == intel_hdmi->force_audio)
			return 0;

		intel_hdmi->force_audio = val;

		if (val > 0 && intel_hdmi->has_audio)
			return 0;
		if (val < 0 && !intel_hdmi->has_audio)
			return 0;

		intel_hdmi->has_audio = val > 0;
		goto done;
	}

	return -EINVAL;

done:
	if (intel_hdmi->base.base.crtc) {
		struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
		drm_crtc_helper_set_mode(crtc, &crtc->mode,
					 crtc->x, crtc->y,
					 crtc->fb);
	}

	return 0;
}

static void intel_hdmi_destroy(struct drm_connector *connector)
{
	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
	kfree(connector);
}

static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
	.dpms = intel_hdmi_dpms,
	.mode_fixup = intel_hdmi_mode_fixup,
	.prepare = intel_encoder_prepare,
	.mode_set = intel_hdmi_mode_set,
	.commit = intel_encoder_commit,
};

static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
	.dpms = drm_helper_connector_dpms,
	.detect = intel_hdmi_detect,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = intel_hdmi_set_property,
	.destroy = intel_hdmi_destroy,
};

static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
	.get_modes = intel_hdmi_get_modes,
	.mode_valid = intel_hdmi_mode_valid,
	.best_encoder = intel_best_encoder,
};

static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
	.destroy = intel_encoder_destroy,
};

static void
intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;

	intel_hdmi->force_audio_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE, "force_audio", 2);
	if (intel_hdmi->force_audio_property) {
		intel_hdmi->force_audio_property->values[0] = -1;
		intel_hdmi->force_audio_property->values[1] = 1;
		drm_connector_attach_property(connector, intel_hdmi->force_audio_property, 0);
	}
}

void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_connector *connector;
	struct intel_encoder *intel_encoder;
	struct intel_connector *intel_connector;
	struct intel_hdmi *intel_hdmi;

	intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
	if (!intel_hdmi)
		return;

	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
	if (!intel_connector) {
		kfree(intel_hdmi);
		return;
	}

	intel_encoder = &intel_hdmi->base;
	drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
			 DRM_MODE_ENCODER_TMDS);

	connector = &intel_connector->base;
	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
			   DRM_MODE_CONNECTOR_HDMIA);
	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);

	intel_encoder->type = INTEL_OUTPUT_HDMI;

	connector->polled = DRM_CONNECTOR_POLL_HPD;
	connector->interlace_allowed = 0;
	connector->doublescan_allowed = 0;
	intel_encoder->crtc_mask = (1 << 0) | (1 << 1);

	/* Set up the DDC bus. */
	if (sdvox_reg == SDVOB) {
		intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == SDVOC) {
		intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == HDMIB) {
		intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == HDMIC) {
		intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
	} else if (sdvox_reg == HDMID) {
		intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
		intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
		dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
	}

	intel_hdmi->sdvox_reg = sdvox_reg;

	drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);

	intel_hdmi_add_properties(intel_hdmi, connector);

	intel_connector_attach_encoder(intel_connector, intel_encoder);
	drm_sysfs_connector_add(connector);

	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
	 * 0xd.  Failure to do so will result in spurious interrupts being
	 * generated on the port when a cable is not attached.
	 */
	if (IS_G4X(dev) && !IS_GM45(dev)) {
		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
	}
}
Commit	Line	Data
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>
5a0e3ad6	30	#include <linux/slab.h>
7d57382e EA	31	#include <linux/delay.h>
	32	#include "drmP.h"
	33	#include "drm.h"
	34	#include "drm_crtc.h"
aa93d632	35	#include "drm_edid.h"
7d57382e EA	36	#include "intel_drv.h"
	37	#include "i915_drm.h"
	38	#include "i915_drv.h"
	39
ea5b213a CW	40	struct intel_hdmi {
ea5b213a CW	41	struct intel_encoder base;
7d57382e	42	u32 sdvox_reg;
f899fc64	43	int ddc_bus;
9dff6af8	44	bool has_hdmi_sink;
2e3d6006	45	bool has_audio;
55b7d6e8 CW	46	int force_audio;
55b7d6e8 CW	47	struct drm_property *force_audio_property;
7d57382e EA	48	};
7d57382e EA	49
ea5b213a CW	50	static struct intel_hdmi enc_to_intel_hdmi(struct drm_encoder encoder)
ea5b213a CW	51	{
4ef69c7a	52	return container_of(encoder, struct intel_hdmi, base.base);
ea5b213a CW	53	}
ea5b213a CW	54
df0e9248 CW	55	static struct intel_hdmi intel_attached_hdmi(struct drm_connector connector)
	56	{
	57	return container_of(intel_attached_encoder(connector),
	58	struct intel_hdmi, base);
	59	}
	60
7d57382e EA	61	static void intel_hdmi_mode_set(struct drm_encoder *encoder,
	62	struct drm_display_mode *mode,
	63	struct drm_display_mode *adjusted_mode)
	64	{
	65	struct drm_device *dev = encoder->dev;
	66	struct drm_i915_private *dev_priv = dev->dev_private;
	67	struct drm_crtc *crtc = encoder->crtc;
	68	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ea5b213a	69	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
7d57382e EA	70	u32 sdvox;
7d57382e EA	71
b599c0bc AJ	72	sdvox = SDVO_ENCODING_HDMI \| SDVO_BORDER_ENABLE;
	73	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
	74	sdvox \|= SDVO_VSYNC_ACTIVE_HIGH;
	75	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
	76	sdvox \|= SDVO_HSYNC_ACTIVE_HIGH;
7d57382e	77
2e3d6006 ZW	78	/* Required on CPT */
	79	if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
	80	sdvox \|= HDMI_MODE_SELECT;
	81
	82	if (intel_hdmi->has_audio)
7d57382e EA	83	sdvox \|= SDVO_AUDIO_ENABLE;
7d57382e EA	84
0f229062 ZW	85	if (intel_crtc->pipe == 1) {
	86	if (HAS_PCH_CPT(dev))
	87	sdvox \|= PORT_TRANS_B_SEL_CPT;
	88	else
	89	sdvox \|= SDVO_PIPE_B_SELECT;
	90	}
7d57382e	91
ea5b213a CW	92	I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
ea5b213a CW	93	POSTING_READ(intel_hdmi->sdvox_reg);
7d57382e EA	94	}
	95
	96	static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
	97	{
	98	struct drm_device *dev = encoder->dev;
	99	struct drm_i915_private *dev_priv = dev->dev_private;
ea5b213a	100	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
7d57382e EA	101	u32 temp;
7d57382e EA	102
ea5b213a	103	temp = I915_READ(intel_hdmi->sdvox_reg);
d8a2d0e0 ZW	104
	105	/* HW workaround, need to toggle enable bit off and on for 12bpc, but
	106	* we do this anyway which shows more stable in testing.
	107	*/
c619eed4	108	if (HAS_PCH_SPLIT(dev)) {
ea5b213a CW	109	I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
ea5b213a CW	110	POSTING_READ(intel_hdmi->sdvox_reg);
d8a2d0e0 ZW	111	}
	112
	113	if (mode != DRM_MODE_DPMS_ON) {
	114	temp &= ~SDVO_ENABLE;
7d57382e	115	} else {
d8a2d0e0	116	temp \|= SDVO_ENABLE;
7d57382e	117	}
d8a2d0e0	118
ea5b213a CW	119	I915_WRITE(intel_hdmi->sdvox_reg, temp);
ea5b213a CW	120	POSTING_READ(intel_hdmi->sdvox_reg);
d8a2d0e0 ZW	121
	122	/* HW workaround, need to write this twice for issue that may result
	123	* in first write getting masked.
	124	*/
c619eed4	125	if (HAS_PCH_SPLIT(dev)) {
ea5b213a CW	126	I915_WRITE(intel_hdmi->sdvox_reg, temp);
ea5b213a CW	127	POSTING_READ(intel_hdmi->sdvox_reg);
d8a2d0e0	128	}
7d57382e EA	129	}
7d57382e EA	130
7d57382e EA	131	static int intel_hdmi_mode_valid(struct drm_connector *connector,
	132	struct drm_display_mode *mode)
	133	{
	134	if (mode->clock > 165000)
	135	return MODE_CLOCK_HIGH;
	136	if (mode->clock < 20000)
	137	return MODE_CLOCK_HIGH;
	138
	139	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	140	return MODE_NO_DBLESCAN;
	141
	142	return MODE_OK;
	143	}
	144
	145	static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
	146	struct drm_display_mode *mode,
	147	struct drm_display_mode *adjusted_mode)
	148	{
	149	return true;
	150	}
	151
aa93d632	152	static enum drm_connector_status
930a9e28	153	intel_hdmi_detect(struct drm_connector *connector, bool force)
9dff6af8	154	{
df0e9248	155	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
f899fc64 CW	156	struct drm_i915_private *dev_priv = connector->dev->dev_private;
f899fc64 CW	157	struct edid *edid;
aa93d632	158	enum drm_connector_status status = connector_status_disconnected;
9dff6af8	159
ea5b213a	160	intel_hdmi->has_hdmi_sink = false;
2e3d6006	161	intel_hdmi->has_audio = false;
f899fc64 CW	162	edid = drm_get_edid(connector,
f899fc64 CW	163	&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
2ded9e27	164
aa93d632	165	if (edid) {
be9f1c4f	166	if (edid->input & DRM_EDID_INPUT_DIGITAL) {
aa93d632	167	status = connector_status_connected;
ea5b213a	168	intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
2e3d6006	169	intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
aa93d632	170	}
674e2d08	171	connector->display_info.raw_edid = NULL;
aa93d632	172	kfree(edid);
9dff6af8	173	}
30ad48b7	174
55b7d6e8 CW	175	if (status == connector_status_connected) {
	176	if (intel_hdmi->force_audio)
	177	intel_hdmi->has_audio = intel_hdmi->force_audio > 0;
	178	}
	179
2ded9e27	180	return status;
7d57382e EA	181	}
	182
	183	static int intel_hdmi_get_modes(struct drm_connector *connector)
	184	{
df0e9248	185	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
f899fc64	186	struct drm_i915_private *dev_priv = connector->dev->dev_private;
7d57382e EA	187
	188	/* We should parse the EDID data and find out if it's an HDMI sink so
	189	* we can send audio to it.
	190	*/
	191
f899fc64 CW	192	return intel_ddc_get_modes(connector,
f899fc64 CW	193	&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
7d57382e EA	194	}
7d57382e EA	195
55b7d6e8 CW	196	static int
	197	intel_hdmi_set_property(struct drm_connector *connector,
	198	struct drm_property *property,
	199	uint64_t val)
	200	{
	201	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
	202	int ret;
	203
	204	ret = drm_connector_property_set_value(connector, property, val);
	205	if (ret)
	206	return ret;
	207
	208	if (property == intel_hdmi->force_audio_property) {
	209	if (val == intel_hdmi->force_audio)
	210	return 0;
	211
	212	intel_hdmi->force_audio = val;
	213
	214	if (val > 0 && intel_hdmi->has_audio)
	215	return 0;
	216	if (val < 0 && !intel_hdmi->has_audio)
	217	return 0;
	218
	219	intel_hdmi->has_audio = val > 0;
	220	goto done;
	221	}
	222
	223	return -EINVAL;
	224
	225	done:
	226	if (intel_hdmi->base.base.crtc) {
	227	struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
	228	drm_crtc_helper_set_mode(crtc, &crtc->mode,
	229	crtc->x, crtc->y,
	230	crtc->fb);
	231	}
	232
	233	return 0;
	234	}
	235
7d57382e EA	236	static void intel_hdmi_destroy(struct drm_connector *connector)
7d57382e EA	237	{
7d57382e EA	238	drm_sysfs_connector_remove(connector);
7d57382e EA	239	drm_connector_cleanup(connector);
674e2d08	240	kfree(connector);
7d57382e EA	241	}
	242
	243	static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
	244	.dpms = intel_hdmi_dpms,
	245	.mode_fixup = intel_hdmi_mode_fixup,
	246	.prepare = intel_encoder_prepare,
	247	.mode_set = intel_hdmi_mode_set,
	248	.commit = intel_encoder_commit,
	249	};
	250
	251	static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
c9fb15f6	252	.dpms = drm_helper_connector_dpms,
7d57382e EA	253	.detect = intel_hdmi_detect,
7d57382e EA	254	.fill_modes = drm_helper_probe_single_connector_modes,
55b7d6e8	255	.set_property = intel_hdmi_set_property,
7d57382e EA	256	.destroy = intel_hdmi_destroy,
	257	};
	258
	259	static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
	260	.get_modes = intel_hdmi_get_modes,
	261	.mode_valid = intel_hdmi_mode_valid,
df0e9248	262	.best_encoder = intel_best_encoder,
7d57382e EA	263	};
7d57382e EA	264
7d57382e	265	static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
ea5b213a	266	.destroy = intel_encoder_destroy,
7d57382e EA	267	};
7d57382e EA	268
55b7d6e8 CW	269	static void
	270	intel_hdmi_add_properties(struct intel_hdmi intel_hdmi, struct drm_connector connector)
	271	{
	272	struct drm_device *dev = connector->dev;
	273
	274	intel_hdmi->force_audio_property =
	275	drm_property_create(dev, DRM_MODE_PROP_RANGE, "force_audio", 2);
	276	if (intel_hdmi->force_audio_property) {
	277	intel_hdmi->force_audio_property->values[0] = -1;
	278	intel_hdmi->force_audio_property->values[1] = 1;
	279	drm_connector_attach_property(connector, intel_hdmi->force_audio_property, 0);
	280	}
	281	}
	282
7d57382e EA	283	void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
	284	{
	285	struct drm_i915_private *dev_priv = dev->dev_private;
	286	struct drm_connector *connector;
21d40d37	287	struct intel_encoder *intel_encoder;
674e2d08	288	struct intel_connector *intel_connector;
ea5b213a	289	struct intel_hdmi *intel_hdmi;
7d57382e	290
ea5b213a CW	291	intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
ea5b213a CW	292	if (!intel_hdmi)
7d57382e	293	return;
674e2d08 ZW	294
	295	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
	296	if (!intel_connector) {
ea5b213a	297	kfree(intel_hdmi);
674e2d08 ZW	298	return;
	299	}
	300
ea5b213a	301	intel_encoder = &intel_hdmi->base;
373a3cf7 CW	302	drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
	303	DRM_MODE_ENCODER_TMDS);
	304
674e2d08	305	connector = &intel_connector->base;
7d57382e	306	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
8d91104a	307	DRM_MODE_CONNECTOR_HDMIA);
7d57382e EA	308	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
7d57382e EA	309
21d40d37	310	intel_encoder->type = INTEL_OUTPUT_HDMI;
7d57382e	311
eb1f8e4f	312	connector->polled = DRM_CONNECTOR_POLL_HPD;
7d57382e EA	313	connector->interlace_allowed = 0;
7d57382e EA	314	connector->doublescan_allowed = 0;
21d40d37	315	intel_encoder->crtc_mask = (1 << 0) \| (1 << 1);
7d57382e EA	316
7d57382e EA	317	/* Set up the DDC bus. */
f8aed700	318	if (sdvox_reg == SDVOB) {
21d40d37	319	intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
f899fc64	320	intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
b01f2c3a	321	dev_priv->hotplug_supported_mask \|= HDMIB_HOTPLUG_INT_STATUS;
f8aed700	322	} else if (sdvox_reg == SDVOC) {
21d40d37	323	intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
f899fc64	324	intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
b01f2c3a	325	dev_priv->hotplug_supported_mask \|= HDMIC_HOTPLUG_INT_STATUS;
f8aed700	326	} else if (sdvox_reg == HDMIB) {
21d40d37	327	intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
f899fc64	328	intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
b01f2c3a	329	dev_priv->hotplug_supported_mask \|= HDMIB_HOTPLUG_INT_STATUS;
f8aed700	330	} else if (sdvox_reg == HDMIC) {
21d40d37	331	intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
f899fc64	332	intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
b01f2c3a	333	dev_priv->hotplug_supported_mask \|= HDMIC_HOTPLUG_INT_STATUS;
f8aed700	334	} else if (sdvox_reg == HDMID) {
21d40d37	335	intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
f899fc64	336	intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
b01f2c3a	337	dev_priv->hotplug_supported_mask \|= HDMID_HOTPLUG_INT_STATUS;
f8aed700	338	}
7d57382e	339
ea5b213a	340	intel_hdmi->sdvox_reg = sdvox_reg;
7d57382e	341
4ef69c7a	342	drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
7d57382e	343
55b7d6e8 CW	344	intel_hdmi_add_properties(intel_hdmi, connector);
55b7d6e8 CW	345
df0e9248	346	intel_connector_attach_encoder(intel_connector, intel_encoder);
7d57382e EA	347	drm_sysfs_connector_add(connector);
	348
	349	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
	350	* 0xd. Failure to do so will result in spurious interrupts being
	351	* generated on the port when a cable is not attached.
	352	*/
	353	if (IS_G4X(dev) && !IS_GM45(dev)) {
	354	u32 temp = I915_READ(PEG_BAND_GAP_DATA);
	355	I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) \| 0xd);
	356	}
7d57382e	357	}