diff options
Diffstat (limited to 'sound/soc/codecs/dmic.c')
| -rw-r--r-- | sound/soc/codecs/dmic.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index 4fd6f97e5a49..61e1bf1b3c9e 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -9,6 +9,7 @@ #include <linux/gpio.h> #include <linux/gpio/consumer.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/module.h> #include <sound/core.h> @@ -25,6 +26,7 @@ module_param(wakeup_delay, uint, 0644); struct dmic { struct gpio_desc *gpio_en; + struct regulator *vref; int wakeup_delay; /* Delay after DMIC mode switch */ int modeswitch_delay; @@ -55,22 +57,33 @@ static int dmic_aif_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); struct dmic *dmic = snd_soc_component_get_drvdata(component); + int ret = 0; switch (event) { case SND_SOC_DAPM_POST_PMU: if (dmic->gpio_en) gpiod_set_value_cansleep(dmic->gpio_en, 1); + if (dmic->vref) { + ret = regulator_enable(dmic->vref); + if (ret) + return ret; + } + if (dmic->wakeup_delay) msleep(dmic->wakeup_delay); break; case SND_SOC_DAPM_POST_PMD: if (dmic->gpio_en) gpiod_set_value_cansleep(dmic->gpio_en, 0); + + if (dmic->vref) + ret = regulator_disable(dmic->vref); + break; } - return 0; + return ret; } static struct snd_soc_dai_driver dmic_dai = { @@ -85,7 +98,9 @@ static struct snd_soc_dai_driver dmic_dai = { | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_DSD_U8 | SNDRV_PCM_FMTBIT_DSD_U16_LE - | SNDRV_PCM_FMTBIT_DSD_U32_LE, + | SNDRV_PCM_FMTBIT_DSD_U32_LE + | SNDRV_PCM_FMTBIT_DSD_U16_BE + | SNDRV_PCM_FMTBIT_DSD_U32_BE, }, .ops = &dmic_dai_ops, }; @@ -98,6 +113,14 @@ static int dmic_component_probe(struct snd_soc_component *component) if (!dmic) return -ENOMEM; + dmic->vref = devm_regulator_get_optional(component->dev, "vref"); + if (IS_ERR(dmic->vref)) { + if (PTR_ERR(dmic->vref) != -ENODEV) + return dev_err_probe(component->dev, PTR_ERR(dmic->vref), + "Failed to get vref\n"); + dmic->vref = NULL; + } + dmic->gpio_en = devm_gpiod_get_optional(component->dev, "dmicen", GPIOD_OUT_LOW); if (IS_ERR(dmic->gpio_en)) |