drivers/gpu/drm/radeon/dce6_afmt.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright 2013 Advanced Micro Devices, Inc.
  *
  * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
  *
  */
 #include <linux/hdmi.h>
 #include <drm/drmP.h>
 #include "radeon.h"
 #include "sid.h"

 static u32 dce6_endpoint_rreg(struct radeon_device *rdev,
 			      u32 block_offset, u32 reg)
 {
 	unsigned long flags;
 	u32 r;

 	spin_lock_irqsave(&rdev->end_idx_lock, flags);
 	WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
 	r = RREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset);
 	spin_unlock_irqrestore(&rdev->end_idx_lock, flags);

 	return r;
 }

 static void dce6_endpoint_wreg(struct radeon_device *rdev,
 			       u32 block_offset, u32 reg, u32 v)
 {
 	unsigned long flags;

 	spin_lock_irqsave(&rdev->end_idx_lock, flags);
 	if (ASIC_IS_DCE8(rdev))
 		WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
 	else
 		WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset,
 		       AZ_ENDPOINT_REG_WRITE_EN | AZ_ENDPOINT_REG_INDEX(reg));
 	WREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset, v);
 	spin_unlock_irqrestore(&rdev->end_idx_lock, flags);
 }

 #define RREG32_ENDPOINT(block, reg) dce6_endpoint_rreg(rdev, (block), (reg))
 #define WREG32_ENDPOINT(block, reg, v) dce6_endpoint_wreg(rdev, (block), (reg), (v))


 static void dce6_afmt_get_connected_pins(struct radeon_device *rdev)
 {
 	int i;
 	u32 offset, tmp;

 	for (i = 0; i < rdev->audio.num_pins; i++) {
 		offset = rdev->audio.pin[i].offset;
 		tmp = RREG32_ENDPOINT(offset,
 				      AZ_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT);
 		if (((tmp & PORT_CONNECTIVITY_MASK) >> PORT_CONNECTIVITY_SHIFT) == 1)
 			rdev->audio.pin[i].connected = false;
 		else
 			rdev->audio.pin[i].connected = true;
 	}
 }

 struct r600_audio_pin *dce6_audio_get_pin(struct radeon_device *rdev)
 {
 	int i;

 	dce6_afmt_get_connected_pins(rdev);

 	for (i = 0; i < rdev->audio.num_pins; i++) {
 		if (rdev->audio.pin[i].connected)
 			return &rdev->audio.pin[i];
 	}
 	DRM_ERROR("No connected audio pins found!\n");
 	return NULL;
 }

 void dce6_afmt_select_pin(struct drm_encoder *encoder)
 {
 	struct radeon_device *rdev = encoder->dev->dev_private;
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 	u32 offset;

 	if (!dig || !dig->afmt || !dig->afmt->pin)
 		return;

 	offset = dig->afmt->offset;

 	WREG32(AFMT_AUDIO_SRC_CONTROL + offset,
 	       AFMT_AUDIO_SRC_SELECT(dig->afmt->pin->id));
 }

 void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
 				    struct drm_display_mode *mode)
 {
 	struct radeon_device *rdev = encoder->dev->dev_private;
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 	struct drm_connector *connector;
 	struct radeon_connector *radeon_connector = NULL;
 	u32 tmp = 0, offset;

 	if (!dig || !dig->afmt || !dig->afmt->pin)
 		return;

 	offset = dig->afmt->pin->offset;

 	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 		if (connector->encoder == encoder) {
 			radeon_connector = to_radeon_connector(connector);
 			break;
 		}
 	}

 	if (!radeon_connector) {
 		DRM_ERROR("Couldn't find encoder's connector\n");
 		return;
 	}

 	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 		if (connector->latency_present[1])
 			tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
 				AUDIO_LIPSYNC(connector->audio_latency[1]);
 		else
 			tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
 	} else {
 		if (connector->latency_present[0])
 			tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
 				AUDIO_LIPSYNC(connector->audio_latency[0]);
 		else
 			tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
 	}
 	WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
 }

 void dce6_afmt_write_speaker_allocation(struct drm_encoder *encoder)
 {
 	struct radeon_device *rdev = encoder->dev->dev_private;
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 	struct drm_connector *connector;
 	struct radeon_connector *radeon_connector = NULL;
 	u32 offset, tmp;
 	u8 *sadb = NULL;
 	int sad_count;

 	if (!dig || !dig->afmt || !dig->afmt->pin)
 		return;

 	offset = dig->afmt->pin->offset;

 	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 		if (connector->encoder == encoder) {
 			radeon_connector = to_radeon_connector(connector);
 			break;
 		}
 	}

 	if (!radeon_connector) {
 		DRM_ERROR("Couldn't find encoder's connector\n");
 		return;
 	}

 	sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector), &sadb);
 	if (sad_count < 0) {
 		DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
 		sad_count = 0;
 	}

 	/* program the speaker allocation */
 	tmp = RREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
 	tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 	/* set HDMI mode */
 	tmp |= HDMI_CONNECTION;
 	if (sad_count)
 		tmp |= SPEAKER_ALLOCATION(sadb[0]);
 	else
 		tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 	WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);

 	kfree(sadb);
 }

 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder)
 {
 	struct radeon_device *rdev = encoder->dev->dev_private;
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 	u32 offset;
 	struct drm_connector *connector;
 	struct radeon_connector *radeon_connector = NULL;
 	struct cea_sad *sads;
 	int i, sad_count;

 	static const u16 eld_reg_to_type[][2] = {
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 		{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 	};

 	if (!dig || !dig->afmt || !dig->afmt->pin)
 		return;

 	offset = dig->afmt->pin->offset;

 	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 		if (connector->encoder == encoder) {
 			radeon_connector = to_radeon_connector(connector);
 			break;
 		}
 	}

 	if (!radeon_connector) {
 		DRM_ERROR("Couldn't find encoder's connector\n");
 		return;
 	}

 	sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 	if (sad_count <= 0) {
 		DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 		return;
 	}
 	BUG_ON(!sads);

 	for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 		u32 value = 0;
 		u8 stereo_freqs = 0;
 		int max_channels = -1;
 		int j;

 		for (j = 0; j < sad_count; j++) {
 			struct cea_sad *sad = &sads[j];

 			if (sad->format == eld_reg_to_type[i][1]) {
 				if (sad->channels > max_channels) {
 					value = MAX_CHANNELS(sad->channels) |
 						DESCRIPTOR_BYTE_2(sad->byte2) |
 						SUPPORTED_FREQUENCIES(sad->freq);
 					max_channels = sad->channels;
 				}

 				if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 					stereo_freqs |= sad->freq;
 				else
 					break;
 			}
 		}

 		value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);

 		WREG32_ENDPOINT(offset, eld_reg_to_type[i][0], value);
 	}

 	kfree(sads);
 }

 void dce6_audio_enable(struct radeon_device *rdev,
 		       struct r600_audio_pin *pin,
 		       u8 enable_mask)
 {
 	if (!pin)
 		return;

 	WREG32_ENDPOINT(pin->offset, AZ_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
 			enable_mask ? AUDIO_ENABLED : 0);
 }

 void dce6_audio_fini(struct radeon_device *rdev)
 {
 	int i;

 	if (!rdev->audio.enabled)
 		return;

 	for (i = 0; i < rdev->audio.num_pins; i++)
 		dce6_audio_enable(rdev, &rdev->audio.pin[i], false);

 	rdev->audio.enabled = false;
 }
	/*
	* Copyright 2013 Advanced Micro Devices, Inc.
	*
	* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
	*
	*/
	#include <linux/hdmi.h>
	#include <drm/drmP.h>
	#include "radeon.h"
	#include "sid.h"

	static u32 dce6_endpoint_rreg(struct radeon_device *rdev,
	u32 block_offset, u32 reg)
	{
	unsigned long flags;
	u32 r;

	spin_lock_irqsave(&rdev->end_idx_lock, flags);
	WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
	r = RREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset);
	spin_unlock_irqrestore(&rdev->end_idx_lock, flags);

	return r;
	}

	static void dce6_endpoint_wreg(struct radeon_device *rdev,
	u32 block_offset, u32 reg, u32 v)
	{
	unsigned long flags;

	spin_lock_irqsave(&rdev->end_idx_lock, flags);
	if (ASIC_IS_DCE8(rdev))
	WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
	else
	WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset,
	AZ_ENDPOINT_REG_WRITE_EN \| AZ_ENDPOINT_REG_INDEX(reg));
	WREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset, v);
	spin_unlock_irqrestore(&rdev->end_idx_lock, flags);
	}

	#define RREG32_ENDPOINT(block, reg) dce6_endpoint_rreg(rdev, (block), (reg))
	#define WREG32_ENDPOINT(block, reg, v) dce6_endpoint_wreg(rdev, (block), (reg), (v))


	static void dce6_afmt_get_connected_pins(struct radeon_device *rdev)
	{
	int i;
	u32 offset, tmp;

	for (i = 0; i < rdev->audio.num_pins; i++) {
	offset = rdev->audio.pin[i].offset;
	tmp = RREG32_ENDPOINT(offset,
	AZ_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT);
	if (((tmp & PORT_CONNECTIVITY_MASK) >> PORT_CONNECTIVITY_SHIFT) == 1)
	rdev->audio.pin[i].connected = false;
	else
	rdev->audio.pin[i].connected = true;
	}
	}

	struct r600_audio_pin dce6_audio_get_pin(struct radeon_device rdev)
	{
	int i;

	dce6_afmt_get_connected_pins(rdev);

	for (i = 0; i < rdev->audio.num_pins; i++) {
	if (rdev->audio.pin[i].connected)
	return &rdev->audio.pin[i];
	}
	DRM_ERROR("No connected audio pins found!\n");
	return NULL;
	}

	void dce6_afmt_select_pin(struct drm_encoder *encoder)
	{
	struct radeon_device *rdev = encoder->dev->dev_private;
	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
	u32 offset;

	if (!dig \|\| !dig->afmt \|\| !dig->afmt->pin)
	return;

	offset = dig->afmt->offset;

	WREG32(AFMT_AUDIO_SRC_CONTROL + offset,
	AFMT_AUDIO_SRC_SELECT(dig->afmt->pin->id));
	}

	void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
	struct drm_display_mode *mode)
	{
	struct radeon_device *rdev = encoder->dev->dev_private;
	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
	struct drm_connector *connector;
	struct radeon_connector *radeon_connector = NULL;
	u32 tmp = 0, offset;

	if (!dig \|\| !dig->afmt \|\| !dig->afmt->pin)
	return;

	offset = dig->afmt->pin->offset;

	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
	if (connector->encoder == encoder) {
	radeon_connector = to_radeon_connector(connector);
	break;
	}
	}

	if (!radeon_connector) {
	DRM_ERROR("Couldn't find encoder's connector\n");
	return;
	}

	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
	if (connector->latency_present[1])
	tmp = VIDEO_LIPSYNC(connector->video_latency[1]) \|
	AUDIO_LIPSYNC(connector->audio_latency[1]);
	else
	tmp = VIDEO_LIPSYNC(0) \| AUDIO_LIPSYNC(0);
	} else {
	if (connector->latency_present[0])
	tmp = VIDEO_LIPSYNC(connector->video_latency[0]) \|
	AUDIO_LIPSYNC(connector->audio_latency[0]);
	else
	tmp = VIDEO_LIPSYNC(0) \| AUDIO_LIPSYNC(0);
	}
	WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
	}

	void dce6_afmt_write_speaker_allocation(struct drm_encoder *encoder)
	{
	struct radeon_device *rdev = encoder->dev->dev_private;
	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
	struct drm_connector *connector;
	struct radeon_connector *radeon_connector = NULL;
	u32 offset, tmp;
	u8 *sadb = NULL;
	int sad_count;

	if (!dig \|\| !dig->afmt \|\| !dig->afmt->pin)
	return;

	offset = dig->afmt->pin->offset;

	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
	if (connector->encoder == encoder) {
	radeon_connector = to_radeon_connector(connector);
	break;
	}
	}

	if (!radeon_connector) {
	DRM_ERROR("Couldn't find encoder's connector\n");
	return;
	}

	sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector), &sadb);
	if (sad_count < 0) {
	DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
	sad_count = 0;
	}

	/* program the speaker allocation */
	tmp = RREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
	tmp &= ~(DP_CONNECTION \| SPEAKER_ALLOCATION_MASK);
	/* set HDMI mode */
	tmp \|= HDMI_CONNECTION;
	if (sad_count)
	tmp \|= SPEAKER_ALLOCATION(sadb[0]);
	else
	tmp \|= SPEAKER_ALLOCATION(5); /* stereo */
	WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);

	kfree(sadb);
	}

	void dce6_afmt_write_sad_regs(struct drm_encoder *encoder)
	{
	struct radeon_device *rdev = encoder->dev->dev_private;
	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
	u32 offset;
	struct drm_connector *connector;
	struct radeon_connector *radeon_connector = NULL;
	struct cea_sad *sads;
	int i, sad_count;

	static const u16 eld_reg_to_type[][2] = {
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
	{ AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
	};

	if (!dig \|\| !dig->afmt \|\| !dig->afmt->pin)
	return;

	offset = dig->afmt->pin->offset;

	list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
	if (connector->encoder == encoder) {
	radeon_connector = to_radeon_connector(connector);
	break;
	}
	}

	if (!radeon_connector) {
	DRM_ERROR("Couldn't find encoder's connector\n");
	return;
	}

	sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
	if (sad_count <= 0) {
	DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
	return;
	}
	BUG_ON(!sads);

	for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
	u32 value = 0;
	u8 stereo_freqs = 0;
	int max_channels = -1;
	int j;

	for (j = 0; j < sad_count; j++) {
	struct cea_sad *sad = &sads[j];

	if (sad->format == eld_reg_to_type[i][1]) {
	if (sad->channels > max_channels) {
	value = MAX_CHANNELS(sad->channels) \|
	DESCRIPTOR_BYTE_2(sad->byte2) \|
	SUPPORTED_FREQUENCIES(sad->freq);
	max_channels = sad->channels;
	}

	if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
	stereo_freqs \|= sad->freq;
	else
	break;
	}
	}

	value \|= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);

	WREG32_ENDPOINT(offset, eld_reg_to_type[i][0], value);
	}

	kfree(sads);
	}

	void dce6_audio_enable(struct radeon_device *rdev,
	struct r600_audio_pin *pin,
	u8 enable_mask)
	{
	if (!pin)
	return;

	WREG32_ENDPOINT(pin->offset, AZ_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
	enable_mask ? AUDIO_ENABLED : 0);
	}

	void dce6_audio_fini(struct radeon_device *rdev)
	{
	int i;

	if (!rdev->audio.enabled)
	return;

	for (i = 0; i < rdev->audio.num_pins; i++)
	dce6_audio_enable(rdev, &rdev->audio.pin[i], false);

	rdev->audio.enabled = false;
	}