ASoC: codecs: Add uda1334 codec driver (caa918ef) · Commits · 戴 / test

sound/soc/codecs/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -199,6 +199,7 @@ config SND_SOC_ALL_CODECS
		select SND_SOC_TS3A227E if I2C
		select SND_SOC_TWL4030 if TWL4030_CORE
		select SND_SOC_TWL6040 if TWL6040_CORE
		select SND_SOC_UDA1334 if GPIOLIB
		select SND_SOC_UDA134X
		select SND_SOC_UDA1380 if I2C
		select SND_SOC_WCD9335 if SLIMBUS
		@@ -1207,6 +1208,14 @@ config SND_SOC_TWL4030
		config SND_SOC_TWL6040
		tristate

		config SND_SOC_UDA1334
		tristate "NXP UDA1334 DAC"
		depends on GPIOLIB
		help
		The UDA1334 is an NXP audio codec, supports the I2S-bus data format
		and has basic features such as de-emphasis (at 44.1 kHz sampling
		rate) and mute.

		config SND_SOC_UDA134X
		tristate

sound/soc/codecs/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -212,6 +212,7 @@ snd-soc-tscs454-objs := tscs454.o
		snd-soc-ts3a227e-objs := ts3a227e.o
		snd-soc-twl4030-objs := twl4030.o
		snd-soc-twl6040-objs := twl6040.o
		snd-soc-uda1334-objs := uda1334.o
		snd-soc-uda134x-objs := uda134x.o
		snd-soc-uda1380-objs := uda1380.o
		snd-soc-wcd9335-objs := wcd-clsh-v2.o wcd9335.o
		@@ -494,6 +495,7 @@ obj-$(CONFIG_SND_SOC_TSCS454) += snd-soc-tscs454.o
		obj-$(CONFIG_SND_SOC_TS3A227E) += snd-soc-ts3a227e.o
		obj-$(CONFIG_SND_SOC_TWL4030) += snd-soc-twl4030.o
		obj-$(CONFIG_SND_SOC_TWL6040) += snd-soc-twl6040.o
		obj-$(CONFIG_SND_SOC_UDA1334) += snd-soc-uda1334.o
		obj-$(CONFIG_SND_SOC_UDA134X) += snd-soc-uda134x.o
		obj-$(CONFIG_SND_SOC_UDA1380) += snd-soc-uda1380.o
		obj-$(CONFIG_SND_SOC_WCD9335) += snd-soc-wcd9335.o

sound/soc/codecs/uda1334.c

0 → 100644

+295 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		//
		// uda1334.c -- UDA1334 ALSA SoC Audio driver
		//
		// Based on WM8523 ALSA SoC Audio driver written by Mark Brown

		#include <linux/module.h>
		#include <linux/moduleparam.h>
		#include <linux/init.h>
		#include <linux/delay.h>
		#include <linux/slab.h>
		#include <linux/gpio/consumer.h>
		#include <linux/of_device.h>
		#include <sound/core.h>
		#include <sound/pcm.h>
		#include <sound/pcm_params.h>
		#include <sound/soc.h>
		#include <sound/initval.h>

		#define UDA1334_NUM_RATES 6

		/* codec private data */
		struct uda1334_priv {
		struct gpio_desc *mute;
		struct gpio_desc *deemph;
		unsigned int sysclk;
		unsigned int rate_constraint_list[UDA1334_NUM_RATES];
		struct snd_pcm_hw_constraint_list rate_constraint;
		};

		static const struct snd_soc_dapm_widget uda1334_dapm_widgets[] = {
		SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
		SND_SOC_DAPM_OUTPUT("LINEVOUTL"),
		SND_SOC_DAPM_OUTPUT("LINEVOUTR"),
		};

		static const struct snd_soc_dapm_route uda1334_dapm_routes[] = {
		{ "LINEVOUTL", NULL, "DAC" },
		{ "LINEVOUTR", NULL, "DAC" },
		};

		static int uda1334_put_deemph(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);
		int deemph = ucontrol->value.integer.value[0];

		if (deemph > 1)
		return -EINVAL;

		gpiod_set_value_cansleep(uda1334->deemph, deemph);

		return 0;
		};

		static int uda1334_get_deemph(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);
		int ret;

		ret = gpiod_get_value_cansleep(uda1334->deemph);
		if (ret < 0)
		return -EINVAL;

		ucontrol->value.integer.value[0] = ret;

		return 0;
		};

		static const struct snd_kcontrol_new uda1334_snd_controls[] = {
		SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
		uda1334_get_deemph, uda1334_put_deemph),
		};

		static const struct {
		int value;
		int ratio;
		} lrclk_ratios[UDA1334_NUM_RATES] = {
		{ 1, 128 },
		{ 2, 192 },
		{ 3, 256 },
		{ 4, 384 },
		{ 5, 512 },
		{ 6, 768 },
		};

		static int uda1334_startup(struct snd_pcm_substream *substream,
		struct snd_soc_dai *dai)
		{
		struct snd_soc_component *component = dai->component;
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);

		/*
		* The set of sample rates that can be supported depends on the
		* MCLK supplied to the CODEC - enforce this.
		*/
		if (!uda1334->sysclk) {
		dev_err(component->dev,
		"No MCLK configured, call set_sysclk() on init\n");
		return -EINVAL;
		}

		snd_pcm_hw_constraint_list(substream->runtime, 0,
		SNDRV_PCM_HW_PARAM_RATE,
		&uda1334->rate_constraint);

		gpiod_set_value_cansleep(uda1334->mute, 1);

		return 0;
		}

		static void uda1334_shutdown(struct snd_pcm_substream *substream,
		struct snd_soc_dai *dai)
		{
		struct snd_soc_component *component = dai->component;
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);

		gpiod_set_value_cansleep(uda1334->mute, 0);
		}

		static int uda1334_set_dai_sysclk(struct snd_soc_dai *codec_dai,
		int clk_id, unsigned int freq, int dir)
		{
		struct snd_soc_component *component = codec_dai->component;
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);
		unsigned int val;
		int i, j = 0;

		uda1334->sysclk = freq;

		uda1334->rate_constraint.count = 0;
		for (i = 0; i < ARRAY_SIZE(lrclk_ratios); i++) {
		val = freq / lrclk_ratios[i].ratio;
		/*
		* Check that it's a standard rate since core can't
		* cope with others and having the odd rates confuses
		* constraint matching.
		*/

		switch (val) {
		case 8000:
		case 32000:
		case 44100:
		case 48000:
		case 64000:
		case 88200:
		case 96000:
		dev_dbg(component->dev, "Supported sample rate: %dHz\n",
		val);
		uda1334->rate_constraint_list[j++] = val;
		uda1334->rate_constraint.count++;
		break;
		default:
		dev_dbg(component->dev, "Skipping sample rate: %dHz\n",
		val);
		}
		}

		/* Need at least one supported rate... */
		if (uda1334->rate_constraint.count == 0)
		return -EINVAL;

		return 0;
		}

		static int uda1334_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 uda1334_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
		{
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(dai->component);

		if (uda1334->mute)
		gpiod_set_value_cansleep(uda1334->mute, mute);

		return 0;
		}

		#define UDA1334_RATES SNDRV_PCM_RATE_8000_96000

		#define UDA1334_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE)

		static const struct snd_soc_dai_ops uda1334_dai_ops = {
		.startup = uda1334_startup,
		.shutdown = uda1334_shutdown,
		.set_sysclk = uda1334_set_dai_sysclk,
		.set_fmt = uda1334_set_fmt,
		.mute_stream = uda1334_mute_stream,
		};

		static struct snd_soc_dai_driver uda1334_dai = {
		.name = "uda1334-hifi",
		.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = UDA1334_RATES,
		.formats = UDA1334_FORMATS,
		},
		.ops = &uda1334_dai_ops,
		};

		static int uda1334_probe(struct snd_soc_component *component)
		{
		struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component);

		uda1334->rate_constraint.list = &uda1334->rate_constraint_list[0];
		uda1334->rate_constraint.count =
		ARRAY_SIZE(uda1334->rate_constraint_list);

		return 0;
		}

		static const struct snd_soc_component_driver soc_component_dev_uda1334 = {
		.probe = uda1334_probe,
		.controls = uda1334_snd_controls,
		.num_controls = ARRAY_SIZE(uda1334_snd_controls),
		.dapm_widgets = uda1334_dapm_widgets,
		.num_dapm_widgets = ARRAY_SIZE(uda1334_dapm_widgets),
		.dapm_routes = uda1334_dapm_routes,
		.num_dapm_routes = ARRAY_SIZE(uda1334_dapm_routes),
		.idle_bias_on = 1,
		.use_pmdown_time = 1,
		.endianness = 1,
		.non_legacy_dai_naming = 1,
		};

		static const struct of_device_id uda1334_of_match[] = {
		{ .compatible = "nxp,uda1334" },
		{ /* sentinel*/ }
		};
		MODULE_DEVICE_TABLE(of, uda1334_of_match);

		static int uda1334_codec_probe(struct platform_device *pdev)
		{
		struct uda1334_priv *uda1334;
		int ret;

		uda1334 = devm_kzalloc(&pdev->dev, sizeof(struct uda1334_priv),
		GFP_KERNEL);
		if (!uda1334)
		return -ENOMEM;

		platform_set_drvdata(pdev, uda1334);

		uda1334->mute = devm_gpiod_get(&pdev->dev, "nxp,mute", GPIOD_OUT_LOW);
		if (IS_ERR(uda1334->mute)) {
		ret = PTR_ERR(uda1334->mute);
		dev_err(&pdev->dev, "Failed to get mute line: %d\n", ret);
		return ret;
		}

		uda1334->deemph = devm_gpiod_get(&pdev->dev, "nxp,deemph", GPIOD_OUT_LOW);
		if (IS_ERR(uda1334->deemph)) {
		ret = PTR_ERR(uda1334->deemph);
		dev_err(&pdev->dev, "Failed to get deemph line: %d\n", ret);
		return ret;
		}

		ret = devm_snd_soc_register_component(&pdev->dev,
		&soc_component_dev_uda1334,
		&uda1334_dai, 1);
		if (ret < 0)
		dev_err(&pdev->dev, "Failed to register component: %d\n", ret);

		return ret;
		}

		static struct platform_driver uda1334_codec_driver = {
		.probe = uda1334_codec_probe,
		.driver = {
		.name = "uda1334-codec",
		.of_match_table = uda1334_of_match,
		},
		};
		module_platform_driver(uda1334_codec_driver);

		MODULE_DESCRIPTION("ASoC UDA1334 driver");
		MODULE_AUTHOR("Andra Danciu <andradanciu1997@gmail.com>");
		MODULE_ALIAS("platform:uda1334-codec");
		MODULE_LICENSE("GPL v2");

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