sound/soc/qcom/sm8250.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2020, Linaro Limited

 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include <sound/pcm.h>
 #include <linux/soundwire/sdw.h>
 #include <sound/jack.h>
 #include <linux/input-event-codes.h>
 #include "qdsp6/q6afe.h"
 #include "common.h"

 #define DRIVER_NAME		"sm8250"
 #define MI2S_BCLK_RATE		1536000

 struct sm8250_snd_data {
 	bool stream_prepared[AFE_PORT_MAX];
 	struct snd_soc_card *card;
 	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
 	struct snd_soc_jack jack;
 	bool jack_setup;
 };

 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	struct snd_soc_card *card = rtd->card;
 	int rval, i;

 	if (!data->jack_setup) {
 		struct snd_jack *jack;

 		rval = snd_soc_card_jack_new(card, "Headset Jack",
 					     SND_JACK_HEADSET | SND_JACK_LINEOUT |
 					     SND_JACK_MECHANICAL |
 					     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 					     SND_JACK_BTN_2 | SND_JACK_BTN_3 |
 					     SND_JACK_BTN_4 | SND_JACK_BTN_5,
 					     &data->jack, NULL, 0);

 		if (rval < 0) {
 			dev_err(card->dev, "Unable to add Headphone Jack\n");
 			return rval;
 		}

 		jack = data->jack.jack;

 		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_MEDIA);
 		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 		data->jack_setup = true;
 	}

 	switch (cpu_dai->id) {
 	case TX_CODEC_DMA_TX_0:
 	case TX_CODEC_DMA_TX_1:
 	case TX_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_3:
 		for_each_rtd_codec_dais(rtd, i, codec_dai) {
 			rval = snd_soc_component_set_jack(codec_dai->component,
 							  &data->jack, NULL);
 			if (rval != 0 && rval != -ENOTSUPP) {
 				dev_warn(card->dev, "Failed to set jack: %d\n", rval);
 				return rval;
 			}
 		}

 		break;
 	default:
 		break;
 	}


 	return 0;
 }

 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 				     struct snd_pcm_hw_params *params)
 {
 	struct snd_interval *rate = hw_param_interval(params,
 					SNDRV_PCM_HW_PARAM_RATE);
 	struct snd_interval *channels = hw_param_interval(params,
 					SNDRV_PCM_HW_PARAM_CHANNELS);

 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;

 	return 0;
 }

 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 {
 	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

 	switch (cpu_dai->id) {
 	case TERTIARY_MI2S_RX:
 		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 		snd_soc_dai_set_sysclk(cpu_dai,
 			Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
 			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 		snd_soc_dai_set_fmt(cpu_dai, fmt);
 		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 		break;
 	default:
 		break;
 	}
 	return 0;
 }

 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime;
 	int i;

 	switch (cpu_dai->id) {
 	case WSA_CODEC_DMA_RX_0:
 	case RX_CODEC_DMA_RX_0:
 	case RX_CODEC_DMA_RX_1:
 	case TX_CODEC_DMA_TX_0:
 	case TX_CODEC_DMA_TX_1:
 	case TX_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_3:
 		for_each_rtd_codec_dais(rtd, i, codec_dai) {
 			sruntime = snd_soc_dai_get_sdw_stream(codec_dai,
 						      substream->stream);
 			if (sruntime != ERR_PTR(-ENOTSUPP))
 				pdata->sruntime[cpu_dai->id] = sruntime;
 		}
 		break;
 	}

 	return 0;

 }

 static int sm8250_snd_wsa_dma_prepare(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 	int ret;

 	if (!sruntime)
 		return 0;

 	if (data->stream_prepared[cpu_dai->id]) {
 		sdw_disable_stream(sruntime);
 		sdw_deprepare_stream(sruntime);
 		data->stream_prepared[cpu_dai->id] = false;
 	}

 	ret = sdw_prepare_stream(sruntime);
 	if (ret)
 		return ret;

 	/**
 	 * NOTE: there is a strict hw requirement about the ordering of port
 	 * enables and actual WSA881x PA enable. PA enable should only happen
 	 * after soundwire ports are enabled if not DC on the line is
 	 * accumulated resulting in Click/Pop Noise
 	 * PA enable/mute are handled as part of codec DAPM and digital mute.
 	 */

 	ret = sdw_enable_stream(sruntime);
 	if (ret) {
 		sdw_deprepare_stream(sruntime);
 		return ret;
 	}
 	data->stream_prepared[cpu_dai->id]  = true;

 	return ret;
 }

 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

 	switch (cpu_dai->id) {
 	case WSA_CODEC_DMA_RX_0:
 	case WSA_CODEC_DMA_RX_1:
 	case RX_CODEC_DMA_RX_0:
 	case RX_CODEC_DMA_RX_1:
 	case TX_CODEC_DMA_TX_0:
 	case TX_CODEC_DMA_TX_1:
 	case TX_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_3:
 		return sm8250_snd_wsa_dma_prepare(substream);
 	default:
 		break;
 	}

 	return 0;
 }

 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

 	switch (cpu_dai->id) {
 	case WSA_CODEC_DMA_RX_0:
 	case WSA_CODEC_DMA_RX_1:
 	case RX_CODEC_DMA_RX_0:
 	case RX_CODEC_DMA_RX_1:
 	case TX_CODEC_DMA_TX_0:
 	case TX_CODEC_DMA_TX_1:
 	case TX_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_3:
 		if (sruntime && data->stream_prepared[cpu_dai->id]) {
 			sdw_disable_stream(sruntime);
 			sdw_deprepare_stream(sruntime);
 			data->stream_prepared[cpu_dai->id] = false;
 		}
 		break;
 	default:
 		break;
 	}

 	return 0;
 }

 static const struct snd_soc_ops sm8250_be_ops = {
 	.startup = sm8250_snd_startup,
 	.hw_params = sm8250_snd_hw_params,
 	.hw_free = sm8250_snd_hw_free,
 	.prepare = sm8250_snd_prepare,
 };

 static void sm8250_add_be_ops(struct snd_soc_card *card)
 {
 	struct snd_soc_dai_link *link;
 	int i;

 	for_each_card_prelinks(card, i, link) {
 		if (link->no_pcm == 1) {
 			link->init = sm8250_snd_init;
 			link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
 			link->ops = &sm8250_be_ops;
 		}
 	}
 }

 static int sm8250_platform_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card;
 	struct sm8250_snd_data *data;
 	struct device *dev = &pdev->dev;
 	int ret;

 	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
 	if (!card)
 		return -ENOMEM;

 	/* Allocate the private data */
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;

 	card->dev = dev;
 	dev_set_drvdata(dev, card);
 	snd_soc_card_set_drvdata(card, data);
 	ret = qcom_snd_parse_of(card);
 	if (ret)
 		return ret;

 	card->driver_name = DRIVER_NAME;
 	sm8250_add_be_ops(card);
 	return devm_snd_soc_register_card(dev, card);
 }

 static const struct of_device_id snd_sm8250_dt_match[] = {
 	{.compatible = "qcom,sm8250-sndcard"},
 	{.compatible = "qcom,qrb5165-rb5-sndcard"},
 	{}
 };

 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);

 static struct platform_driver snd_sm8250_driver = {
 	.probe  = sm8250_platform_probe,
 	.driver = {
 		.name = "snd-sm8250",
 		.of_match_table = snd_sm8250_dt_match,
 	},
 };
 module_platform_driver(snd_sm8250_driver);
 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0
	// Copyright (c) 2020, Linaro Limited

	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/of_device.h>
	#include <sound/soc.h>
	#include <sound/soc-dapm.h>
	#include <sound/pcm.h>
	#include <linux/soundwire/sdw.h>
	#include <sound/jack.h>
	#include <linux/input-event-codes.h>
	#include "qdsp6/q6afe.h"
	#include "common.h"

	#define DRIVER_NAME "sm8250"
	#define MI2S_BCLK_RATE 1536000

	struct sm8250_snd_data {
	bool stream_prepared[AFE_PORT_MAX];
	struct snd_soc_card *card;
	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
	struct snd_soc_jack jack;
	bool jack_setup;
	};

	static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	struct snd_soc_card *card = rtd->card;
	int rval, i;

	if (!data->jack_setup) {
	struct snd_jack *jack;

	rval = snd_soc_card_jack_new(card, "Headset Jack",
	SND_JACK_HEADSET \| SND_JACK_LINEOUT \|
	SND_JACK_MECHANICAL \|
	SND_JACK_BTN_0 \| SND_JACK_BTN_1 \|
	SND_JACK_BTN_2 \| SND_JACK_BTN_3 \|
	SND_JACK_BTN_4 \| SND_JACK_BTN_5,
	&data->jack, NULL, 0);

	if (rval < 0) {
	dev_err(card->dev, "Unable to add Headphone Jack\n");
	return rval;
	}

	jack = data->jack.jack;

	snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_MEDIA);
	snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
	snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
	snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
	data->jack_setup = true;
	}

	switch (cpu_dai->id) {
	case TX_CODEC_DMA_TX_0:
	case TX_CODEC_DMA_TX_1:
	case TX_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_3:
	for_each_rtd_codec_dais(rtd, i, codec_dai) {
	rval = snd_soc_component_set_jack(codec_dai->component,
	&data->jack, NULL);
	if (rval != 0 && rval != -ENOTSUPP) {
	dev_warn(card->dev, "Failed to set jack: %d\n", rval);
	return rval;
	}
	}

	break;
	default:
	break;
	}


	return 0;
	}

	static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
	struct snd_pcm_hw_params *params)
	{
	struct snd_interval *rate = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_RATE);
	struct snd_interval *channels = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_CHANNELS);

	rate->min = rate->max = 48000;
	channels->min = channels->max = 2;

	return 0;
	}

	static int sm8250_snd_startup(struct snd_pcm_substream *substream)
	{
	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

	switch (cpu_dai->id) {
	case TERTIARY_MI2S_RX:
	codec_dai_fmt \|= SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_I2S;
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
	MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
	snd_soc_dai_set_fmt(cpu_dai, fmt);
	snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
	break;
	default:
	break;
	}
	return 0;
	}

	static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai;
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
	struct sdw_stream_runtime *sruntime;
	int i;

	switch (cpu_dai->id) {
	case WSA_CODEC_DMA_RX_0:
	case RX_CODEC_DMA_RX_0:
	case RX_CODEC_DMA_RX_1:
	case TX_CODEC_DMA_TX_0:
	case TX_CODEC_DMA_TX_1:
	case TX_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_3:
	for_each_rtd_codec_dais(rtd, i, codec_dai) {
	sruntime = snd_soc_dai_get_sdw_stream(codec_dai,
	substream->stream);
	if (sruntime != ERR_PTR(-ENOTSUPP))
	pdata->sruntime[cpu_dai->id] = sruntime;
	}
	break;
	}

	return 0;

	}

	static int sm8250_snd_wsa_dma_prepare(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
	int ret;

	if (!sruntime)
	return 0;

	if (data->stream_prepared[cpu_dai->id]) {
	sdw_disable_stream(sruntime);
	sdw_deprepare_stream(sruntime);
	data->stream_prepared[cpu_dai->id] = false;
	}

	ret = sdw_prepare_stream(sruntime);
	if (ret)
	return ret;

	/**
	* NOTE: there is a strict hw requirement about the ordering of port
	* enables and actual WSA881x PA enable. PA enable should only happen
	* after soundwire ports are enabled if not DC on the line is
	* accumulated resulting in Click/Pop Noise
	* PA enable/mute are handled as part of codec DAPM and digital mute.
	*/

	ret = sdw_enable_stream(sruntime);
	if (ret) {
	sdw_deprepare_stream(sruntime);
	return ret;
	}
	data->stream_prepared[cpu_dai->id] = true;

	return ret;
	}

	static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

	switch (cpu_dai->id) {
	case WSA_CODEC_DMA_RX_0:
	case WSA_CODEC_DMA_RX_1:
	case RX_CODEC_DMA_RX_0:
	case RX_CODEC_DMA_RX_1:
	case TX_CODEC_DMA_TX_0:
	case TX_CODEC_DMA_TX_1:
	case TX_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_3:
	return sm8250_snd_wsa_dma_prepare(substream);
	default:
	break;
	}

	return 0;
	}

	static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

	switch (cpu_dai->id) {
	case WSA_CODEC_DMA_RX_0:
	case WSA_CODEC_DMA_RX_1:
	case RX_CODEC_DMA_RX_0:
	case RX_CODEC_DMA_RX_1:
	case TX_CODEC_DMA_TX_0:
	case TX_CODEC_DMA_TX_1:
	case TX_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_3:
	if (sruntime && data->stream_prepared[cpu_dai->id]) {
	sdw_disable_stream(sruntime);
	sdw_deprepare_stream(sruntime);
	data->stream_prepared[cpu_dai->id] = false;
	}
	break;
	default:
	break;
	}

	return 0;
	}

	static const struct snd_soc_ops sm8250_be_ops = {
	.startup = sm8250_snd_startup,
	.hw_params = sm8250_snd_hw_params,
	.hw_free = sm8250_snd_hw_free,
	.prepare = sm8250_snd_prepare,
	};

	static void sm8250_add_be_ops(struct snd_soc_card *card)
	{
	struct snd_soc_dai_link *link;
	int i;

	for_each_card_prelinks(card, i, link) {
	if (link->no_pcm == 1) {
	link->init = sm8250_snd_init;
	link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
	link->ops = &sm8250_be_ops;
	}
	}
	}

	static int sm8250_platform_probe(struct platform_device *pdev)
	{
	struct snd_soc_card *card;
	struct sm8250_snd_data *data;
	struct device *dev = &pdev->dev;
	int ret;

	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
	if (!card)
	return -ENOMEM;

	/* Allocate the private data */
	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
	if (!data)
	return -ENOMEM;

	card->dev = dev;
	dev_set_drvdata(dev, card);
	snd_soc_card_set_drvdata(card, data);
	ret = qcom_snd_parse_of(card);
	if (ret)
	return ret;

	card->driver_name = DRIVER_NAME;
	sm8250_add_be_ops(card);
	return devm_snd_soc_register_card(dev, card);
	}

	static const struct of_device_id snd_sm8250_dt_match[] = {
	{.compatible = "qcom,sm8250-sndcard"},
	{.compatible = "qcom,qrb5165-rb5-sndcard"},
	{}
	};

	MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);

	static struct platform_driver snd_sm8250_driver = {
	.probe = sm8250_platform_probe,
	.driver = {
	.name = "snd-sm8250",
	.of_match_table = snd_sm8250_dt_match,
	},
	};
	module_platform_driver(snd_sm8250_driver);
	MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
	MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
	MODULE_LICENSE("GPL v2");