sound/soc/intel/boards/bytcht_cx2072x.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 //
 // ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
 // CX2072X codec
 //

 #include <linux/acpi.h>
 #include <linux/device.h>
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/jack.h>
 #include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include "../../codecs/cx2072x.h"
 #include "../atom/sst-atom-controls.h"

 static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 };

 static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
 	/* External Speakers: HFL, HFR */
 	{"Headphone", NULL, "PORTA"},
 	{"Ext Spk", NULL, "PORTG"},
 	{"PORTC", NULL, "Int Mic"},
 	{"PORTD", NULL, "Headset Mic"},

 	{"Playback", NULL, "ssp2 Tx"},
 	{"ssp2 Tx", NULL, "codec_out0"},
 	{"ssp2 Tx", NULL, "codec_out1"},
 	{"codec_in0", NULL, "ssp2 Rx"},
 	{"codec_in1", NULL, "ssp2 Rx"},
 	{"ssp2 Rx", NULL, "Capture"},
 };

 static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 	SOC_DAPM_PIN_SWITCH("Int Mic"),
 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
 };

 static struct snd_soc_jack byt_cht_cx2072x_headset;

 /* Headset jack detection DAPM pins */
 static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
 	{
 		.pin = "Headset Mic",
 		.mask = SND_JACK_MICROPHONE,
 	},
 	{
 		.pin = "Headphone",
 		.mask = SND_JACK_HEADPHONE,
 	},
 };

 static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
 static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
 	{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
 	{},
 };

 static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;
 	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
 	int ret;

 	if (devm_acpi_dev_add_driver_gpios(codec->dev,
 					   byt_cht_cx2072x_acpi_gpios))
 		dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");

 	card->dapm.idle_bias_off = true;

 	/* set the default PLL rate, the clock is handled by the codec driver */
 	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
 				     19200000, SND_SOC_CLOCK_IN);
 	if (ret) {
 		dev_err(rtd->dev, "Could not set sysclk\n");
 		return ret;
 	}

 	ret = snd_soc_card_jack_new_pins(card, "Headset",
 					 SND_JACK_HEADSET | SND_JACK_BTN_0,
 					 &byt_cht_cx2072x_headset,
 					 byt_cht_cx2072x_headset_pins,
 					 ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
 	if (ret)
 		return ret;

 	snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);

 	snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);

 	return 0;
 }

 static int byt_cht_cx2072x_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);
 	int ret;

 	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;

 	/* set SSP2 to 24-bit */
 	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);

 	/*
 	 * Default mode for SSP configuration is TDM 4 slot, override config
 	 * with explicit setting to I2S 2ch 24-bit. The word length is set with
 	 * dai_set_tdm_slot() since there is no other API exposed
 	 */
 	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
 				SND_SOC_DAIFMT_I2S     |
 				SND_SOC_DAIFMT_NB_NF   |
 				SND_SOC_DAIFMT_BP_FP);
 	if (ret < 0) {
 		dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
 		return ret;
 	}

 	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
 	if (ret < 0) {
 		dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
 {
 	return snd_pcm_hw_constraint_single(substream->runtime,
 					    SNDRV_PCM_HW_PARAM_RATE, 48000);
 }

 static const struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
 	.startup = byt_cht_cx2072x_aif1_startup,
 };

 SND_SOC_DAILINK_DEF(dummy,
 	DAILINK_COMP_ARRAY(COMP_DUMMY()));

 SND_SOC_DAILINK_DEF(media,
 	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));

 SND_SOC_DAILINK_DEF(deepbuffer,
 	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));

 SND_SOC_DAILINK_DEF(ssp2,
 	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));

 SND_SOC_DAILINK_DEF(cx2072x,
 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));

 SND_SOC_DAILINK_DEF(platform,
 	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));

 static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
 	[MERR_DPCM_AUDIO] = {
 		.name = "Audio Port",
 		.stream_name = "Audio",
 		.nonatomic = true,
 		.dynamic = 1,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		.ops = &byt_cht_cx2072x_aif1_ops,
 		SND_SOC_DAILINK_REG(media, dummy, platform),
 	},
 	[MERR_DPCM_DEEP_BUFFER] = {
 		.name = "Deep-Buffer Audio Port",
 		.stream_name = "Deep-Buffer Audio",
 		.nonatomic = true,
 		.dynamic = 1,
 		.dpcm_playback = 1,
 		.ops = &byt_cht_cx2072x_aif1_ops,
 		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
 	},
 	/* back ends */
 	{
 		.name = "SSP2-Codec",
 		.id = 0,
 		.no_pcm = 1,
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 					      | SND_SOC_DAIFMT_CBC_CFC,
 		.init = byt_cht_cx2072x_init,
 		.be_hw_params_fixup = byt_cht_cx2072x_fixup,
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
 	},
 };

 /* use space before codec name to simplify card ID, and simplify driver name */
 #define SOF_CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
 #define SOF_DRIVER_NAME "SOF"

 #define CARD_NAME "bytcht-cx2072x"
 #define DRIVER_NAME NULL /* card name will be used for driver name */

 /* SoC card */
 static struct snd_soc_card byt_cht_cx2072x_card = {
 	.name = CARD_NAME,
 	.driver_name = DRIVER_NAME,
 	.owner = THIS_MODULE,
 	.dai_link = byt_cht_cx2072x_dais,
 	.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
 	.dapm_widgets = byt_cht_cx2072x_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
 	.dapm_routes = byt_cht_cx2072x_audio_map,
 	.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
 	.controls = byt_cht_cx2072x_controls,
 	.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
 };

 static char codec_name[SND_ACPI_I2C_ID_LEN];

 static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
 {
 	struct snd_soc_acpi_mach *mach;
 	struct acpi_device *adev;
 	int dai_index = 0;
 	bool sof_parent;
 	int i, ret;

 	byt_cht_cx2072x_card.dev = &pdev->dev;
 	mach = dev_get_platdata(&pdev->dev);

 	/* fix index of codec dai */
 	for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
 		if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
 			    "i2c-14F10720:00")) {
 			dai_index = i;
 			break;
 		}
 	}

 	/* fixup codec name based on HID */
 	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
 	if (adev) {
 		snprintf(codec_name, sizeof(codec_name), "i2c-%s",
 			 acpi_dev_name(adev));
 		put_device(&adev->dev);
 		byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
 	}

 	/* override platform name, if required */
 	ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
 						    mach->mach_params.platform);
 	if (ret)
 		return ret;

 	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);

 	/* set card and driver name */
 	if (sof_parent) {
 		byt_cht_cx2072x_card.name = SOF_CARD_NAME;
 		byt_cht_cx2072x_card.driver_name = SOF_DRIVER_NAME;
 	} else {
 		byt_cht_cx2072x_card.name = CARD_NAME;
 		byt_cht_cx2072x_card.driver_name = DRIVER_NAME;
 	}

 	/* set pm ops */
 	if (sof_parent)
 		pdev->dev.driver->pm = &snd_soc_pm_ops;

 	return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
 }

 static struct platform_driver snd_byt_cht_cx2072x_driver = {
 	.driver = {
 		.name = "bytcht_cx2072x",
 	},
 	.probe = snd_byt_cht_cx2072x_probe,
 };
 module_platform_driver(snd_byt_cht_cx2072x_driver);

 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:bytcht_cx2072x");
	// SPDX-License-Identifier: GPL-2.0-only
	//
	// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
	// CX2072X codec
	//

	#include <linux/acpi.h>
	#include <linux/device.h>
	#include <linux/gpio/consumer.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/jack.h>
	#include <sound/soc.h>
	#include <sound/soc-acpi.h>
	#include "../../codecs/cx2072x.h"
	#include "../atom/sst-atom-controls.h"

	static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	};

	static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
	/* External Speakers: HFL, HFR */
	{"Headphone", NULL, "PORTA"},
	{"Ext Spk", NULL, "PORTG"},
	{"PORTC", NULL, "Int Mic"},
	{"PORTD", NULL, "Headset Mic"},

	{"Playback", NULL, "ssp2 Tx"},
	{"ssp2 Tx", NULL, "codec_out0"},
	{"ssp2 Tx", NULL, "codec_out1"},
	{"codec_in0", NULL, "ssp2 Rx"},
	{"codec_in1", NULL, "ssp2 Rx"},
	{"ssp2 Rx", NULL, "Capture"},
	};

	static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
	SOC_DAPM_PIN_SWITCH("Headphone"),
	SOC_DAPM_PIN_SWITCH("Headset Mic"),
	SOC_DAPM_PIN_SWITCH("Int Mic"),
	SOC_DAPM_PIN_SWITCH("Ext Spk"),
	};

	static struct snd_soc_jack byt_cht_cx2072x_headset;

	/* Headset jack detection DAPM pins */
	static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
	{
	.pin = "Headset Mic",
	.mask = SND_JACK_MICROPHONE,
	},
	{
	.pin = "Headphone",
	.mask = SND_JACK_HEADPHONE,
	},
	};

	static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
	static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
	{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
	{},
	};

	static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_card *card = rtd->card;
	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
	int ret;

	if (devm_acpi_dev_add_driver_gpios(codec->dev,
	byt_cht_cx2072x_acpi_gpios))
	dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");

	card->dapm.idle_bias_off = true;

	/* set the default PLL rate, the clock is handled by the codec driver */
	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
	19200000, SND_SOC_CLOCK_IN);
	if (ret) {
	dev_err(rtd->dev, "Could not set sysclk\n");
	return ret;
	}

	ret = snd_soc_card_jack_new_pins(card, "Headset",
	SND_JACK_HEADSET \| SND_JACK_BTN_0,
	&byt_cht_cx2072x_headset,
	byt_cht_cx2072x_headset_pins,
	ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
	if (ret)
	return ret;

	snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);

	snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);

	return 0;
	}

	static int byt_cht_cx2072x_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);
	int ret;

	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
	rate->min = rate->max = 48000;
	channels->min = channels->max = 2;

	/* set SSP2 to 24-bit */
	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);

	/*
	* Default mode for SSP configuration is TDM 4 slot, override config
	* with explicit setting to I2S 2ch 24-bit. The word length is set with
	* dai_set_tdm_slot() since there is no other API exposed
	*/
	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
	SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_BP_FP);
	if (ret < 0) {
	dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
	return ret;
	}

	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
	if (ret < 0) {
	dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
	return ret;
	}

	return 0;
	}

	static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
	{
	return snd_pcm_hw_constraint_single(substream->runtime,
	SNDRV_PCM_HW_PARAM_RATE, 48000);
	}

	static const struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
	.startup = byt_cht_cx2072x_aif1_startup,
	};

	SND_SOC_DAILINK_DEF(dummy,
	DAILINK_COMP_ARRAY(COMP_DUMMY()));

	SND_SOC_DAILINK_DEF(media,
	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));

	SND_SOC_DAILINK_DEF(deepbuffer,
	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));

	SND_SOC_DAILINK_DEF(ssp2,
	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));

	SND_SOC_DAILINK_DEF(cx2072x,
	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));

	SND_SOC_DAILINK_DEF(platform,
	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));

	static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
	[MERR_DPCM_AUDIO] = {
	.name = "Audio Port",
	.stream_name = "Audio",
	.nonatomic = true,
	.dynamic = 1,
	.dpcm_playback = 1,
	.dpcm_capture = 1,
	.ops = &byt_cht_cx2072x_aif1_ops,
	SND_SOC_DAILINK_REG(media, dummy, platform),
	},
	[MERR_DPCM_DEEP_BUFFER] = {
	.name = "Deep-Buffer Audio Port",
	.stream_name = "Deep-Buffer Audio",
	.nonatomic = true,
	.dynamic = 1,
	.dpcm_playback = 1,
	.ops = &byt_cht_cx2072x_aif1_ops,
	SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
	},
	/* back ends */
	{
	.name = "SSP2-Codec",
	.id = 0,
	.no_pcm = 1,
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF
	\| SND_SOC_DAIFMT_CBC_CFC,
	.init = byt_cht_cx2072x_init,
	.be_hw_params_fixup = byt_cht_cx2072x_fixup,
	.dpcm_playback = 1,
	.dpcm_capture = 1,
	SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
	},
	};

	/* use space before codec name to simplify card ID, and simplify driver name */
	#define SOF_CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
	#define SOF_DRIVER_NAME "SOF"

	#define CARD_NAME "bytcht-cx2072x"
	#define DRIVER_NAME NULL /* card name will be used for driver name */

	/* SoC card */
	static struct snd_soc_card byt_cht_cx2072x_card = {
	.name = CARD_NAME,
	.driver_name = DRIVER_NAME,
	.owner = THIS_MODULE,
	.dai_link = byt_cht_cx2072x_dais,
	.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
	.dapm_widgets = byt_cht_cx2072x_widgets,
	.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
	.dapm_routes = byt_cht_cx2072x_audio_map,
	.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
	.controls = byt_cht_cx2072x_controls,
	.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
	};

	static char codec_name[SND_ACPI_I2C_ID_LEN];

	static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
	{
	struct snd_soc_acpi_mach *mach;
	struct acpi_device *adev;
	int dai_index = 0;
	bool sof_parent;
	int i, ret;

	byt_cht_cx2072x_card.dev = &pdev->dev;
	mach = dev_get_platdata(&pdev->dev);

	/* fix index of codec dai */
	for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
	if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
	"i2c-14F10720:00")) {
	dai_index = i;
	break;
	}
	}

	/* fixup codec name based on HID */
	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
	if (adev) {
	snprintf(codec_name, sizeof(codec_name), "i2c-%s",
	acpi_dev_name(adev));
	put_device(&adev->dev);
	byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
	}

	/* override platform name, if required */
	ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
	mach->mach_params.platform);
	if (ret)
	return ret;

	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);

	/* set card and driver name */
	if (sof_parent) {
	byt_cht_cx2072x_card.name = SOF_CARD_NAME;
	byt_cht_cx2072x_card.driver_name = SOF_DRIVER_NAME;
	} else {
	byt_cht_cx2072x_card.name = CARD_NAME;
	byt_cht_cx2072x_card.driver_name = DRIVER_NAME;
	}

	/* set pm ops */
	if (sof_parent)
	pdev->dev.driver->pm = &snd_soc_pm_ops;

	return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
	}

	static struct platform_driver snd_byt_cht_cx2072x_driver = {
	.driver = {
	.name = "bytcht_cx2072x",
	},
	.probe = snd_byt_cht_cx2072x_probe,
	};
	module_platform_driver(snd_byt_cht_cx2072x_driver);

	MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
	MODULE_LICENSE("GPL v2");
	MODULE_ALIAS("platform:bytcht_cx2072x");