diff options
author | Daniel Mack <daniel@zonque.org> | 2018-10-03 21:34:36 +0200 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2018-10-08 12:25:57 +0200 |
commit | 7454a21c13f7ce9bf1a4f9b639039b78462cec09 (patch) | |
tree | 073d2c518e218d1fe41a22921dd011f6ae7d6cf1 /sound | |
parent | ASoC: Add device tree documentation file for wm8782 stereo DAC (diff) | |
download | linux-7454a21c13f7ce9bf1a4f9b639039b78462cec09.tar.xz linux-7454a21c13f7ce9bf1a4f9b639039b78462cec09.zip |
ASoC: wm8782: add support for regulators
Lookup regulators for Vdd and Vdda during probe, and enable them when the
component is linked.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r-- | sound/soc/codecs/wm8782.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c index 317db9a149a7..cf2cdbece122 100644 --- a/sound/soc/codecs/wm8782.c +++ b/sound/soc/codecs/wm8782.c @@ -20,6 +20,7 @@ #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> @@ -50,7 +51,51 @@ static struct snd_soc_dai_driver wm8782_dai = { }, }; +/* 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, @@ -63,6 +108,24 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = { 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); } |