sound/soc/codecs/es7134.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2017 BayLibre, SAS.
  * Author: Jerome Brunet <jbrunet@baylibre.com>
  */

 #include <linux/of_platform.h>
 #include <linux/module.h>
 #include <sound/soc.h>

 /*
  * The everest 7134 is a very simple DA converter with no register
  */

 struct es7134_clock_mode {
 	unsigned int rate_min;
 	unsigned int rate_max;
 	unsigned int *mclk_fs;
 	unsigned int mclk_fs_num;
 };

 struct es7134_chip {
 	struct snd_soc_dai_driver *dai_drv;
 	const struct es7134_clock_mode *modes;
 	unsigned int mode_num;
 	const struct snd_soc_dapm_widget *extra_widgets;
 	unsigned int extra_widget_num;
 	const struct snd_soc_dapm_route *extra_routes;
 	unsigned int extra_route_num;
 };

 struct es7134_data {
 	unsigned int mclk;
 	const struct es7134_chip *chip;
 };

 static int es7134_check_mclk(struct snd_soc_dai *dai,
 			     struct es7134_data *priv,
 			     unsigned int rate)
 {
 	unsigned int mfs = priv->mclk / rate;
 	int i, j;

 	for (i = 0; i < priv->chip->mode_num; i++) {
 		const struct es7134_clock_mode *mode = &priv->chip->modes[i];

 		if (rate < mode->rate_min || rate > mode->rate_max)
 			continue;

 		for (j = 0; j < mode->mclk_fs_num; j++) {
 			if (mode->mclk_fs[j] == mfs)
 				return 0;
 		}

 		dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
 			mfs, rate);
 		return -EINVAL;
 	}

 	/* should not happen */
 	dev_err(dai->dev, "unsupported rate: %u\n", rate);
 	return -EINVAL;
 }

 static int es7134_hw_params(struct snd_pcm_substream *substream,
 			    struct snd_pcm_hw_params *params,
 			    struct snd_soc_dai *dai)
 {
 	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

 	/* mclk has not been provided, assume it is OK */
 	if (!priv->mclk)
 		return 0;

 	return es7134_check_mclk(dai, priv, params_rate(params));
 }

 static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 			     unsigned int freq, int dir)
 {
 	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

 	if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
 		priv->mclk = freq;
 		return 0;
 	}

 	return -ENOTSUPP;
 }

 static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 {
 	fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
 		SND_SOC_DAIFMT_MASTER_MASK);

 	if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 		    SND_SOC_DAIFMT_CBS_CFS)) {
 		dev_err(codec_dai->dev, "Invalid DAI format\n");
 		return -EINVAL;
 	}

 	return 0;
 }

 static int es7134_component_probe(struct snd_soc_component *c)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
 	struct es7134_data *priv = snd_soc_component_get_drvdata(c);
 	const struct es7134_chip *chip = priv->chip;
 	int ret;

 	if (chip->extra_widget_num) {
 		ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
 						chip->extra_widget_num);
 		if (ret) {
 			dev_err(c->dev, "failed to add extra widgets\n");
 			return ret;
 		}
 	}

 	if (chip->extra_route_num) {
 		ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
 					      chip->extra_route_num);
 		if (ret) {
 			dev_err(c->dev, "failed to add extra routes\n");
 			return ret;
 		}
 	}

 	return 0;
 }

 static const struct snd_soc_dai_ops es7134_dai_ops = {
 	.set_fmt	= es7134_set_fmt,
 	.hw_params	= es7134_hw_params,
 	.set_sysclk	= es7134_set_sysclk,
 };

 static struct snd_soc_dai_driver es7134_dai = {
 	.name = "es7134-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = (SNDRV_PCM_RATE_8000_48000 |
 			  SNDRV_PCM_RATE_88200      |
 			  SNDRV_PCM_RATE_96000      |
 			  SNDRV_PCM_RATE_176400     |
 			  SNDRV_PCM_RATE_192000),
 		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
 			    SNDRV_PCM_FMTBIT_S18_3LE |
 			    SNDRV_PCM_FMTBIT_S20_3LE |
 			    SNDRV_PCM_FMTBIT_S24_3LE |
 			    SNDRV_PCM_FMTBIT_S24_LE),
 	},
 	.ops = &es7134_dai_ops,
 };

 static const struct es7134_clock_mode es7134_modes[] = {
 	{
 		/* Single speed mode */
 		.rate_min = 8000,
 		.rate_max = 50000,
 		.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
 		.mclk_fs_num = 5,
 	}, {
 		/* Double speed mode */
 		.rate_min = 84000,
 		.rate_max = 100000,
 		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
 		.mclk_fs_num = 5,
 	}, {
 		/* Quad speed mode */
 		.rate_min = 167000,
 		.rate_max = 192000,
 		.mclk_fs = (unsigned int[]) { 128, 192, 256 },
 		.mclk_fs_num = 3,
 	},
 };

 /* Digital I/O are also supplied by VDD on the es7134 */
 static const struct snd_soc_dapm_route es7134_extra_routes[] = {
 	{ "Playback", NULL, "VDD", }
 };

 static const struct es7134_chip es7134_chip __maybe_unused = {
 	.dai_drv = &es7134_dai,
 	.modes = es7134_modes,
 	.mode_num = ARRAY_SIZE(es7134_modes),
 	.extra_routes = es7134_extra_routes,
 	.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
 };

 static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
 	SND_SOC_DAPM_OUTPUT("AOUTL"),
 	SND_SOC_DAPM_OUTPUT("AOUTR"),
 	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
 };

 static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
 	{ "AOUTL", NULL, "DAC" },
 	{ "AOUTR", NULL, "DAC" },
 	{ "DAC", NULL, "VDD" },
 };

 static const struct snd_soc_component_driver es7134_component_driver = {
 	.probe			= es7134_component_probe,
 	.dapm_widgets		= es7134_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(es7134_dapm_widgets),
 	.dapm_routes		= es7134_dapm_routes,
 	.num_dapm_routes	= ARRAY_SIZE(es7134_dapm_routes),
 	.idle_bias_on		= 1,
 	.use_pmdown_time	= 1,
 	.endianness		= 1,
 	.non_legacy_dai_naming	= 1,
 };

 static struct snd_soc_dai_driver es7154_dai = {
 	.name = "es7154-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = (SNDRV_PCM_RATE_8000_48000 |
 			  SNDRV_PCM_RATE_88200      |
 			  SNDRV_PCM_RATE_96000),
 		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
 			    SNDRV_PCM_FMTBIT_S18_3LE |
 			    SNDRV_PCM_FMTBIT_S20_3LE |
 			    SNDRV_PCM_FMTBIT_S24_3LE |
 			    SNDRV_PCM_FMTBIT_S24_LE),
 	},
 	.ops = &es7134_dai_ops,
 };

 static const struct es7134_clock_mode es7154_modes[] = {
 	{
 		/* Single speed mode */
 		.rate_min = 8000,
 		.rate_max = 50000,
 		.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
 					      384, 512, 768, 1024 },
 		.mclk_fs_num = 9,
 	}, {
 		/* Double speed mode */
 		.rate_min = 84000,
 		.rate_max = 100000,
 		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
 					      768, 1024},
 		.mclk_fs_num = 7,
 	}
 };

 /* Es7154 has a separate supply for digital I/O  */
 static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
 	SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
 };

 static const struct snd_soc_dapm_route es7154_extra_routes[] = {
 	{ "Playback", NULL, "PVDD", }
 };

 static const struct es7134_chip es7154_chip __maybe_unused = {
 	.dai_drv = &es7154_dai,
 	.modes = es7154_modes,
 	.mode_num = ARRAY_SIZE(es7154_modes),
 	.extra_routes = es7154_extra_routes,
 	.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
 	.extra_widgets = es7154_extra_widgets,
 	.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
 };

 static int es7134_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct es7134_data *priv;

 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 	platform_set_drvdata(pdev, priv);

 	priv->chip = of_device_get_match_data(dev);
 	if (!priv->chip) {
 		dev_err(dev, "failed to match device\n");
 		return -ENODEV;
 	}

 	return devm_snd_soc_register_component(&pdev->dev,
 				      &es7134_component_driver,
 				      priv->chip->dai_drv, 1);
 }

 #ifdef CONFIG_OF
 static const struct of_device_id es7134_ids[] = {
 	{ .compatible = "everest,es7134", .data = &es7134_chip },
 	{ .compatible = "everest,es7144", .data = &es7134_chip },
 	{ .compatible = "everest,es7154", .data = &es7154_chip },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, es7134_ids);
 #endif

 static struct platform_driver es7134_driver = {
 	.driver = {
 		.name = "es7134",
 		.of_match_table = of_match_ptr(es7134_ids),
 	},
 	.probe = es7134_probe,
 };

 module_platform_driver(es7134_driver);

 MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (c) 2017 BayLibre, SAS.
	* Author: Jerome Brunet <jbrunet@baylibre.com>
	*/

	#include <linux/of_platform.h>
	#include <linux/module.h>
	#include <sound/soc.h>

	/*
	* The everest 7134 is a very simple DA converter with no register
	*/

	struct es7134_clock_mode {
	unsigned int rate_min;
	unsigned int rate_max;
	unsigned int *mclk_fs;
	unsigned int mclk_fs_num;
	};

	struct es7134_chip {
	struct snd_soc_dai_driver *dai_drv;
	const struct es7134_clock_mode *modes;
	unsigned int mode_num;
	const struct snd_soc_dapm_widget *extra_widgets;
	unsigned int extra_widget_num;
	const struct snd_soc_dapm_route *extra_routes;
	unsigned int extra_route_num;
	};

	struct es7134_data {
	unsigned int mclk;
	const struct es7134_chip *chip;
	};

	static int es7134_check_mclk(struct snd_soc_dai *dai,
	struct es7134_data *priv,
	unsigned int rate)
	{
	unsigned int mfs = priv->mclk / rate;
	int i, j;

	for (i = 0; i < priv->chip->mode_num; i++) {
	const struct es7134_clock_mode *mode = &priv->chip->modes[i];

	if (rate < mode->rate_min \|\| rate > mode->rate_max)
	continue;

	for (j = 0; j < mode->mclk_fs_num; j++) {
	if (mode->mclk_fs[j] == mfs)
	return 0;
	}

	dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
	mfs, rate);
	return -EINVAL;
	}

	/* should not happen */
	dev_err(dai->dev, "unsupported rate: %u\n", rate);
	return -EINVAL;
	}

	static int es7134_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

	/* mclk has not been provided, assume it is OK */
	if (!priv->mclk)
	return 0;

	return es7134_check_mclk(dai, priv, params_rate(params));
	}

	static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
	unsigned int freq, int dir)
	{
	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);

	if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
	priv->mclk = freq;
	return 0;
	}

	return -ENOTSUPP;
	}

	static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
	{
	fmt &= (SND_SOC_DAIFMT_FORMAT_MASK \| SND_SOC_DAIFMT_INV_MASK \|
	SND_SOC_DAIFMT_MASTER_MASK);

	if (fmt != (SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS)) {
	dev_err(codec_dai->dev, "Invalid DAI format\n");
	return -EINVAL;
	}

	return 0;
	}

	static int es7134_component_probe(struct snd_soc_component *c)
	{
	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
	struct es7134_data *priv = snd_soc_component_get_drvdata(c);
	const struct es7134_chip *chip = priv->chip;
	int ret;

	if (chip->extra_widget_num) {
	ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
	chip->extra_widget_num);
	if (ret) {
	dev_err(c->dev, "failed to add extra widgets\n");
	return ret;
	}
	}

	if (chip->extra_route_num) {
	ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
	chip->extra_route_num);
	if (ret) {
	dev_err(c->dev, "failed to add extra routes\n");
	return ret;
	}
	}

	return 0;
	}

	static const struct snd_soc_dai_ops es7134_dai_ops = {
	.set_fmt = es7134_set_fmt,
	.hw_params = es7134_hw_params,
	.set_sysclk = es7134_set_sysclk,
	};

	static struct snd_soc_dai_driver es7134_dai = {
	.name = "es7134-hifi",
	.playback = {
	.stream_name = "Playback",
	.channels_min = 2,
	.channels_max = 2,
	.rates = (SNDRV_PCM_RATE_8000_48000 \|
	SNDRV_PCM_RATE_88200 \|
	SNDRV_PCM_RATE_96000 \|
	SNDRV_PCM_RATE_176400 \|
	SNDRV_PCM_RATE_192000),
	.formats = (SNDRV_PCM_FMTBIT_S16_LE \|
	SNDRV_PCM_FMTBIT_S18_3LE \|
	SNDRV_PCM_FMTBIT_S20_3LE \|
	SNDRV_PCM_FMTBIT_S24_3LE \|
	SNDRV_PCM_FMTBIT_S24_LE),
	},
	.ops = &es7134_dai_ops,
	};

	static const struct es7134_clock_mode es7134_modes[] = {
	{
	/* Single speed mode */
	.rate_min = 8000,
	.rate_max = 50000,
	.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
	.mclk_fs_num = 5,
	}, {
	/* Double speed mode */
	.rate_min = 84000,
	.rate_max = 100000,
	.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
	.mclk_fs_num = 5,
	}, {
	/* Quad speed mode */
	.rate_min = 167000,
	.rate_max = 192000,
	.mclk_fs = (unsigned int[]) { 128, 192, 256 },
	.mclk_fs_num = 3,
	},
	};

	/* Digital I/O are also supplied by VDD on the es7134 */
	static const struct snd_soc_dapm_route es7134_extra_routes[] = {
	{ "Playback", NULL, "VDD", }
	};

	static const struct es7134_chip es7134_chip __maybe_unused = {
	.dai_drv = &es7134_dai,
	.modes = es7134_modes,
	.mode_num = ARRAY_SIZE(es7134_modes),
	.extra_routes = es7134_extra_routes,
	.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
	};

	static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("AOUTL"),
	SND_SOC_DAPM_OUTPUT("AOUTR"),
	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
	};

	static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
	{ "AOUTL", NULL, "DAC" },
	{ "AOUTR", NULL, "DAC" },
	{ "DAC", NULL, "VDD" },
	};

	static const struct snd_soc_component_driver es7134_component_driver = {
	.probe = es7134_component_probe,
	.dapm_widgets = es7134_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
	.dapm_routes = es7134_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
	.idle_bias_on = 1,
	.use_pmdown_time = 1,
	.endianness = 1,
	.non_legacy_dai_naming = 1,
	};

	static struct snd_soc_dai_driver es7154_dai = {
	.name = "es7154-hifi",
	.playback = {
	.stream_name = "Playback",
	.channels_min = 2,
	.channels_max = 2,
	.rates = (SNDRV_PCM_RATE_8000_48000 \|
	SNDRV_PCM_RATE_88200 \|
	SNDRV_PCM_RATE_96000),
	.formats = (SNDRV_PCM_FMTBIT_S16_LE \|
	SNDRV_PCM_FMTBIT_S18_3LE \|
	SNDRV_PCM_FMTBIT_S20_3LE \|
	SNDRV_PCM_FMTBIT_S24_3LE \|
	SNDRV_PCM_FMTBIT_S24_LE),
	},
	.ops = &es7134_dai_ops,
	};

	static const struct es7134_clock_mode es7154_modes[] = {
	{
	/* Single speed mode */
	.rate_min = 8000,
	.rate_max = 50000,
	.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
	384, 512, 768, 1024 },
	.mclk_fs_num = 9,
	}, {
	/* Double speed mode */
	.rate_min = 84000,
	.rate_max = 100000,
	.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
	768, 1024},
	.mclk_fs_num = 7,
	}
	};

	/* Es7154 has a separate supply for digital I/O */
	static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
	SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
	};

	static const struct snd_soc_dapm_route es7154_extra_routes[] = {
	{ "Playback", NULL, "PVDD", }
	};

	static const struct es7134_chip es7154_chip __maybe_unused = {
	.dai_drv = &es7154_dai,
	.modes = es7154_modes,
	.mode_num = ARRAY_SIZE(es7154_modes),
	.extra_routes = es7154_extra_routes,
	.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
	.extra_widgets = es7154_extra_widgets,
	.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
	};

	static int es7134_probe(struct platform_device *pdev)
	{
	struct device *dev = &pdev->dev;
	struct es7134_data *priv;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;
	platform_set_drvdata(pdev, priv);

	priv->chip = of_device_get_match_data(dev);
	if (!priv->chip) {
	dev_err(dev, "failed to match device\n");
	return -ENODEV;
	}

	return devm_snd_soc_register_component(&pdev->dev,
	&es7134_component_driver,
	priv->chip->dai_drv, 1);
	}

	#ifdef CONFIG_OF
	static const struct of_device_id es7134_ids[] = {
	{ .compatible = "everest,es7134", .data = &es7134_chip },
	{ .compatible = "everest,es7144", .data = &es7134_chip },
	{ .compatible = "everest,es7154", .data = &es7154_chip },
	{ }
	};
	MODULE_DEVICE_TABLE(of, es7134_ids);
	#endif

	static struct platform_driver es7134_driver = {
	.driver = {
	.name = "es7134",
	.of_match_table = of_match_ptr(es7134_ids),
	},
	.probe = es7134_probe,
	};

	module_platform_driver(es7134_driver);

	MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
	MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
	MODULE_LICENSE("GPL");