diff options
Diffstat (limited to 'sound/soc/codecs/dmic.c')
| -rw-r--r-- | sound/soc/codecs/dmic.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index 71322e0410ee..da921da50ef0 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -30,9 +30,39 @@ #include <sound/soc.h> #include <sound/soc-dapm.h> +#define MAX_MODESWITCH_DELAY 70 +static int modeswitch_delay; +module_param(modeswitch_delay, uint, 0644); + +static int wakeup_delay; +module_param(wakeup_delay, uint, 0644); + struct dmic { struct gpio_desc *gpio_en; int wakeup_delay; + /* Delay after DMIC mode switch */ + int modeswitch_delay; +}; + +int dmic_daiops_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct dmic *dmic = snd_soc_component_get_drvdata(component); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_STOP: + if (dmic->modeswitch_delay) + mdelay(dmic->modeswitch_delay); + + break; + } + + return 0; +} + +static const struct snd_soc_dai_ops dmic_dai_ops = { + .trigger = dmic_daiops_trigger, }; static int dmic_aif_event(struct snd_soc_dapm_widget *w, @@ -68,6 +98,7 @@ 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_component_probe(struct snd_soc_component *component) @@ -85,6 +116,15 @@ static int dmic_component_probe(struct snd_soc_component *component) device_property_read_u32(component->dev, "wakeup-delay-ms", &dmic->wakeup_delay); + device_property_read_u32(component->dev, "modeswitch-delay-ms", + &dmic->modeswitch_delay); + if (wakeup_delay) + dmic->wakeup_delay = wakeup_delay; + if (modeswitch_delay) + dmic->modeswitch_delay = modeswitch_delay; + + if (dmic->modeswitch_delay > MAX_MODESWITCH_DELAY) + dmic->modeswitch_delay = MAX_MODESWITCH_DELAY; snd_soc_component_set_drvdata(component, dmic); |