150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* sound/soc/codecs/wm8782.c
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* simple, strap-pin configured 24bit 2ch ADC
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*
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* Copyright: 2011 Raumfeld GmbH
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* Author: Johannes Stezenbach <js@sig21.net>
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*
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* based on ad73311.c
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* Copyright: Analog Devices Inc.
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* Author: Cliff Cai <cliff.cai@analog.com>
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/regulator/consumer.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("AINL"),
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SND_SOC_DAPM_INPUT("AINR"),
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};
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static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
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{ "Capture", NULL, "AINL" },
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{ "Capture", NULL, "AINR" },
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};
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static struct snd_soc_dai_driver wm8782_dai = {
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.name = "wm8782",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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/* For configurations with FSAMPEN=0 */
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S20_3LE |
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SNDRV_PCM_FMTBIT_S24_LE,
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},
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};
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/* regulator power supply names */
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static const char *supply_names[] = {
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"Vdda", /* analog supply, 2.7V - 3.6V */
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"Vdd", /* digital supply, 2.7V - 5.5V */
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};
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struct wm8782_priv {
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struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
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};
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static int wm8782_soc_probe(struct snd_soc_component *component)
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{
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struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
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}
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static void wm8782_soc_remove(struct snd_soc_component *component)
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{
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struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
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}
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#ifdef CONFIG_PM
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static int wm8782_soc_suspend(struct snd_soc_component *component)
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{
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struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
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return 0;
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}
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static int wm8782_soc_resume(struct snd_soc_component *component)
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{
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struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
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}
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#else
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#define wm8782_soc_suspend NULL
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#define wm8782_soc_resume NULL
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#endif /* CONFIG_PM */
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static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
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.probe = wm8782_soc_probe,
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.remove = wm8782_soc_remove,
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.suspend = wm8782_soc_suspend,
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.resume = wm8782_soc_resume,
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.dapm_widgets = wm8782_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(wm8782_dapm_widgets),
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.dapm_routes = wm8782_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(wm8782_dapm_routes),
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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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};
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static int wm8782_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct wm8782_priv *priv;
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int ret, i;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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dev_set_drvdata(dev, priv);
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for (i = 0; i < ARRAY_SIZE(supply_names); i++)
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priv->supplies[i].supply = supply_names[i];
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ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
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priv->supplies);
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if (ret < 0)
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return ret;
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return devm_snd_soc_register_component(&pdev->dev,
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&soc_component_dev_wm8782, &wm8782_dai, 1);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id wm8782_of_match[] = {
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{ .compatible = "wlf,wm8782", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, wm8782_of_match);
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#endif
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static struct platform_driver wm8782_codec_driver = {
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.driver = {
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.name = "wm8782",
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.of_match_table = of_match_ptr(wm8782_of_match),
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},
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.probe = wm8782_probe,
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};
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module_platform_driver(wm8782_codec_driver);
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MODULE_DESCRIPTION("ASoC WM8782 driver");
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MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
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MODULE_LICENSE("GPL");
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