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