sound/soc/sof/intel/hda-codec.c - linux - Git at Google

 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
 //
 // This file is provided under a dual BSD/GPLv2 license.  When using or
 // redistributing this file, you may do so under either license.
 //
 // Copyright(c) 2018 Intel Corporation. All rights reserved.
 //
 // Authors: Keyon Jie <yang.jie@linux.intel.com>
 //

 #include <linux/module.h>
 #include <sound/hdaudio_ext.h>
 #include <sound/hda_register.h>
 #include <sound/hda_codec.h>
 #include <sound/hda_i915.h>
 #include <sound/sof.h>
 #include "../ops.h"
 #include "hda.h"
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
 #include "../../codecs/hdac_hda.h"
 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */

 #define CODEC_PROBE_RETRIES	3

 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
 #define IDISP_VID_INTEL	0x80860000

 /* load the legacy HDA codec driver */
 static int request_codec_module(struct hda_codec *codec)
 {
 #ifdef MODULE
 	char alias[MODULE_NAME_LEN];
 	const char *mod = NULL;

 	switch (codec->probe_id) {
 	case HDA_CODEC_ID_GENERIC:
 #if IS_MODULE(CONFIG_SND_HDA_GENERIC)
 		mod = "snd-hda-codec-generic";
 #endif
 		break;
 	default:
 		snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));
 		mod = alias;
 		break;
 	}

 	if (mod) {
 		dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);
 		request_module(mod);
 	}
 #endif /* MODULE */
 	return device_attach(hda_codec_dev(codec));
 }

 static int hda_codec_load_module(struct hda_codec *codec)
 {
 	int ret = request_codec_module(codec);

 	if (ret <= 0) {
 		codec->probe_id = HDA_CODEC_ID_GENERIC;
 		ret = request_codec_module(codec);
 	}

 	return ret;
 }

 /* enable controller wake up event for all codecs with jack connectors */
 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable)
 {
 	struct hda_bus *hbus = sof_to_hbus(sdev);
 	struct hdac_bus *bus = sof_to_bus(sdev);
 	struct hda_codec *codec;
 	unsigned int mask = 0;

 	if (enable) {
 		list_for_each_codec(codec, hbus)
 			if (codec->jacktbl.used)
 				mask |= BIT(codec->core.addr);
 	}

 	snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
 }

 /* check jack status after resuming from suspend mode */
 void hda_codec_jack_check(struct snd_sof_dev *sdev)
 {
 	struct hda_bus *hbus = sof_to_hbus(sdev);
 	struct hda_codec *codec;

 	list_for_each_codec(codec, hbus)
 		/*
 		 * Wake up all jack-detecting codecs regardless whether an event
 		 * has been recorded in STATESTS
 		 */
 		if (codec->jacktbl.used)
 			pm_request_resume(&codec->core.dev);
 }
 #else
 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {}
 void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);

 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
 #define is_generic_config(bus) \
 	((bus)->modelname && !strcmp((bus)->modelname, "generic"))
 #else
 #define is_generic_config(x)	0
 #endif

 /* probe individual codec */
 static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
 			   bool hda_codec_use_common_hdmi)
 {
 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
 	struct hdac_hda_priv *hda_priv;
 	struct hda_codec *codec;
 	int type = HDA_DEV_LEGACY;
 #endif
 	struct hda_bus *hbus = sof_to_hbus(sdev);
 	struct hdac_device *hdev;
 	u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
 		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
 	u32 resp = -1;
 	int ret, retry = 0;

 	do {
 		mutex_lock(&hbus->core.cmd_mutex);
 		snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
 		snd_hdac_bus_get_response(&hbus->core, address, &resp);
 		mutex_unlock(&hbus->core.cmd_mutex);
 	} while (resp == -1 && retry++ < CODEC_PROBE_RETRIES);

 	if (resp == -1)
 		return -EIO;
 	dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
 		address, resp);

 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
 	hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
 	if (!hda_priv)
 		return -ENOMEM;

 	hda_priv->codec.bus = hbus;
 	hdev = &hda_priv->codec.core;
 	codec = &hda_priv->codec;

 	/* only probe ASoC codec drivers for HDAC-HDMI */
 	if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
 		type = HDA_DEV_ASOC;

 	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
 	if (ret < 0)
 		return ret;

 	if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
 		if (!hdev->bus->audio_component) {
 			dev_dbg(sdev->dev,
 				"iDisp hw present but no driver\n");
 			ret = -ENOENT;
 			goto out;
 		}
 		hda_priv->need_display_power = true;
 	}

 	if (is_generic_config(hbus))
 		codec->probe_id = HDA_CODEC_ID_GENERIC;
 	else
 		codec->probe_id = 0;

 	if (type == HDA_DEV_LEGACY) {
 		ret = hda_codec_load_module(codec);
 		/*
 		 * handle ret==0 (no driver bound) as an error, but pass
 		 * other return codes without modification
 		 */
 		if (ret == 0)
 			ret = -ENOENT;
 	}

 out:
 	if (ret < 0) {
 		snd_hdac_device_unregister(hdev);
 		put_device(&hdev->dev);
 	}
 #else
 	hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
 	if (!hdev)
 		return -ENOMEM;

 	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
 #endif

 	return ret;
 }

 /* Codec initialization */
 void hda_codec_probe_bus(struct snd_sof_dev *sdev,
 			 bool hda_codec_use_common_hdmi)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
 	int i, ret;

 	/* probe codecs in avail slots */
 	for (i = 0; i < HDA_MAX_CODECS; i++) {

 		if (!(bus->codec_mask & (1 << i)))
 			continue;

 		ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
 		if (ret < 0) {
 			dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
 				 i, ret);
 			bus->codec_mask &= ~BIT(i);
 		}
 	}
 }
 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);

 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
 	IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)

 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);

 	if (HDA_IDISP_CODEC(bus->codec_mask)) {
 		dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
 		snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
 	}
 }
 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

 int hda_codec_i915_init(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);
 	int ret;

 	/* i915 exposes a HDA codec for HDMI audio */
 	ret = snd_hdac_i915_init(bus);
 	if (ret < 0)
 		return ret;

 	/* codec_mask not yet known, power up for probe */
 	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);

 	return 0;
 }
 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

 int hda_codec_i915_exit(struct snd_sof_dev *sdev)
 {
 	struct hdac_bus *bus = sof_to_bus(sdev);

 	if (!bus->audio_component)
 		return 0;

 	/* power down unconditionally */
 	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);

 	return snd_hdac_i915_exit(bus);
 }
 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

 #endif

 MODULE_LICENSE("Dual BSD/GPL");
	// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
	//
	// This file is provided under a dual BSD/GPLv2 license. When using or
	// redistributing this file, you may do so under either license.
	//
	// Copyright(c) 2018 Intel Corporation. All rights reserved.
	//
	// Authors: Keyon Jie <yang.jie@linux.intel.com>
	//

	#include <linux/module.h>
	#include <sound/hdaudio_ext.h>
	#include <sound/hda_register.h>
	#include <sound/hda_codec.h>
	#include <sound/hda_i915.h>
	#include <sound/sof.h>
	#include "../ops.h"
	#include "hda.h"
	#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
	#include "../../codecs/hdac_hda.h"
	#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */

	#define CODEC_PROBE_RETRIES 3

	#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
	#define IDISP_VID_INTEL 0x80860000

	/* load the legacy HDA codec driver */
	static int request_codec_module(struct hda_codec *codec)
	{
	#ifdef MODULE
	char alias[MODULE_NAME_LEN];
	const char *mod = NULL;

	switch (codec->probe_id) {
	case HDA_CODEC_ID_GENERIC:
	#if IS_MODULE(CONFIG_SND_HDA_GENERIC)
	mod = "snd-hda-codec-generic";
	#endif
	break;
	default:
	snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));
	mod = alias;
	break;
	}

	if (mod) {
	dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);
	request_module(mod);
	}
	#endif /* MODULE */
	return device_attach(hda_codec_dev(codec));
	}

	static int hda_codec_load_module(struct hda_codec *codec)
	{
	int ret = request_codec_module(codec);

	if (ret <= 0) {
	codec->probe_id = HDA_CODEC_ID_GENERIC;
	ret = request_codec_module(codec);
	}

	return ret;
	}

	/* enable controller wake up event for all codecs with jack connectors */
	void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable)
	{
	struct hda_bus *hbus = sof_to_hbus(sdev);
	struct hdac_bus *bus = sof_to_bus(sdev);
	struct hda_codec *codec;
	unsigned int mask = 0;

	if (enable) {
	list_for_each_codec(codec, hbus)
	if (codec->jacktbl.used)
	mask \|= BIT(codec->core.addr);
	}

	snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
	}

	/* check jack status after resuming from suspend mode */
	void hda_codec_jack_check(struct snd_sof_dev *sdev)
	{
	struct hda_bus *hbus = sof_to_hbus(sdev);
	struct hda_codec *codec;

	list_for_each_codec(codec, hbus)
	/*
	* Wake up all jack-detecting codecs regardless whether an event
	* has been recorded in STATESTS
	*/
	if (codec->jacktbl.used)
	pm_request_resume(&codec->core.dev);
	}
	#else
	void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {}
	void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
	#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
	EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
	EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);

	#if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
	#define is_generic_config(bus) \
	((bus)->modelname && !strcmp((bus)->modelname, "generic"))
	#else
	#define is_generic_config(x) 0
	#endif

	/* probe individual codec */
	static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
	bool hda_codec_use_common_hdmi)
	{
	#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
	struct hdac_hda_priv *hda_priv;
	struct hda_codec *codec;
	int type = HDA_DEV_LEGACY;
	#endif
	struct hda_bus *hbus = sof_to_hbus(sdev);
	struct hdac_device *hdev;
	u32 hda_cmd = (address << 28) \| (AC_NODE_ROOT << 20) \|
	(AC_VERB_PARAMETERS << 8) \| AC_PAR_VENDOR_ID;
	u32 resp = -1;
	int ret, retry = 0;

	do {
	mutex_lock(&hbus->core.cmd_mutex);
	snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
	snd_hdac_bus_get_response(&hbus->core, address, &resp);
	mutex_unlock(&hbus->core.cmd_mutex);
	} while (resp == -1 && retry++ < CODEC_PROBE_RETRIES);

	if (resp == -1)
	return -EIO;
	dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
	address, resp);

	#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
	hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
	if (!hda_priv)
	return -ENOMEM;

	hda_priv->codec.bus = hbus;
	hdev = &hda_priv->codec.core;
	codec = &hda_priv->codec;

	/* only probe ASoC codec drivers for HDAC-HDMI */
	if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
	type = HDA_DEV_ASOC;

	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
	if (ret < 0)
	return ret;

	if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
	if (!hdev->bus->audio_component) {
	dev_dbg(sdev->dev,
	"iDisp hw present but no driver\n");
	ret = -ENOENT;
	goto out;
	}
	hda_priv->need_display_power = true;
	}

	if (is_generic_config(hbus))
	codec->probe_id = HDA_CODEC_ID_GENERIC;
	else
	codec->probe_id = 0;

	if (type == HDA_DEV_LEGACY) {
	ret = hda_codec_load_module(codec);
	/*
	* handle ret==0 (no driver bound) as an error, but pass
	* other return codes without modification
	*/
	if (ret == 0)
	ret = -ENOENT;
	}

	out:
	if (ret < 0) {
	snd_hdac_device_unregister(hdev);
	put_device(&hdev->dev);
	}
	#else
	hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
	if (!hdev)
	return -ENOMEM;

	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
	#endif

	return ret;
	}

	/* Codec initialization */
	void hda_codec_probe_bus(struct snd_sof_dev *sdev,
	bool hda_codec_use_common_hdmi)
	{
	struct hdac_bus *bus = sof_to_bus(sdev);
	int i, ret;

	/* probe codecs in avail slots */
	for (i = 0; i < HDA_MAX_CODECS; i++) {

	if (!(bus->codec_mask & (1 << i)))
	continue;

	ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
	if (ret < 0) {
	dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
	i, ret);
	bus->codec_mask &= ~BIT(i);
	}
	}
	}
	EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);

	#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) \|\| \
	IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)

	void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
	{
	struct hdac_bus *bus = sof_to_bus(sdev);

	if (HDA_IDISP_CODEC(bus->codec_mask)) {
	dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
	}
	}
	EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

	int hda_codec_i915_init(struct snd_sof_dev *sdev)
	{
	struct hdac_bus *bus = sof_to_bus(sdev);
	int ret;

	/* i915 exposes a HDA codec for HDMI audio */
	ret = snd_hdac_i915_init(bus);
	if (ret < 0)
	return ret;

	/* codec_mask not yet known, power up for probe */
	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);

	return 0;
	}
	EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

	int hda_codec_i915_exit(struct snd_sof_dev *sdev)
	{
	struct hdac_bus *bus = sof_to_bus(sdev);

	if (!bus->audio_component)
	return 0;

	/* power down unconditionally */
	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);

	return snd_hdac_i915_exit(bus);
	}
	EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);

	#endif

	MODULE_LICENSE("Dual BSD/GPL");