diff options
| author | Mark Brown <broonie@kernel.org> | 2017-09-01 12:12:16 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-09-01 12:12:16 +0100 |
| commit | ab99d9872e93e83fc2d992eeb8de7d9a128858eb (patch) | |
| tree | 49910d189623ffaab04dd5241e7eabe236053b16 /sound/soc/codecs/dmic.c | |
| parent | a5ef8ca69a6bea61062854ee37cb199a5659964c (diff) | |
| parent | 56026714bd45fccda710114982789c5145285560 (diff) | |
Merge remote-tracking branch 'asoc/topic/msm8916' into asoc-next
Diffstat (limited to 'sound/soc/codecs/dmic.c')
| -rw-r--r-- | sound/soc/codecs/dmic.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index c82b9dc41e9a..b88a1ee66f80 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -19,6 +19,8 @@ * */ +#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/module.h> @@ -27,6 +29,34 @@ #include <sound/soc.h> #include <sound/soc-dapm.h> +static int dmic_daiops_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct gpio_desc *dmic_en = snd_soc_dai_get_drvdata(dai); + + if (!dmic_en) + return 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + gpiod_set_value(dmic_en, 1); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + gpiod_set_value(dmic_en, 0); + break; + } + + return 0; +} + +static const struct snd_soc_dai_ops dmic_dai_ops = { + .trigger = dmic_daiops_trigger, +}; + static struct snd_soc_dai_driver dmic_dai = { .name = "dmic-hifi", .capture = { @@ -38,8 +68,23 @@ static struct snd_soc_dai_driver dmic_dai = { | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE, }, + .ops = &dmic_dai_ops, }; +static int dmic_codec_probe(struct snd_soc_codec *codec) +{ + struct gpio_desc *dmic_en; + + dmic_en = devm_gpiod_get_optional(codec->dev, + "dmicen", GPIOD_OUT_LOW); + if (IS_ERR(dmic_en)) + return PTR_ERR(dmic_en); + + snd_soc_codec_set_drvdata(codec, dmic_en); + + return 0; +} + static const struct snd_soc_dapm_widget dmic_dapm_widgets[] = { SND_SOC_DAPM_AIF_OUT("DMIC AIF", "Capture", 0, SND_SOC_NOPM, 0, 0), @@ -50,7 +95,8 @@ static const struct snd_soc_dapm_route intercon[] = { {"DMIC AIF", NULL, "DMic"}, }; -static struct snd_soc_codec_driver soc_dmic = { +static const struct snd_soc_codec_driver soc_dmic = { + .probe = dmic_codec_probe, .component_driver = { .dapm_widgets = dmic_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(dmic_dapm_widgets), @@ -73,9 +119,15 @@ static int dmic_dev_remove(struct platform_device *pdev) MODULE_ALIAS("platform:dmic-codec"); +static const struct of_device_id dmic_dev_match[] = { + {.compatible = "dmic-codec"}, + {} +}; + static struct platform_driver dmic_driver = { .driver = { .name = "dmic-codec", + .of_match_table = dmic_dev_match, }, .probe = dmic_dev_probe, .remove = dmic_dev_remove, |