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ASoC: rt5682: Add a property for DMIC delay 

The patch adds a property for DMIC delay (ms) to avoid pop noise and
changes the default delay setting.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Link: https://lore.kernel.org/r/20200323082547.7898-2-oder_chiou@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Oder Chiou 2020-03-23 16:25:46 +08:00 committed by Mark Brown
parent 9a74c44a6f
commit 8b15ee0bf8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 12 additions and 1 deletions
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1
include/sound/rt5682.h
View File

@ -39,6 +39,7 @@ struct rt5682_platform_data {
enum rt5682_jd_src jd_src;
unsigned int btndet_delay;
unsigned int dmic_clk_rate;
unsigned int dmic_delay;
const char *dai_clk_names[RT5682_DAI_NUM_CLKS];
};

12
sound/soc/codecs/rt5682.c
View File

@ -1544,10 +1544,18 @@ static int rt5682_hp_event(struct snd_soc_dapm_widget *w,
static int set_dmic_power(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 rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
unsigned int delay = 50;
if (rt5682->pdata.dmic_delay)
delay = rt5682->pdata.dmic_delay;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
/*Add delay to avoid pop noise*/
msleep(150);
msleep(delay);
break;
default:
@ -3236,6 +3244,8 @@ static int rt5682_parse_dt(struct rt5682_priv *rt5682, struct device *dev)
&rt5682->pdata.btndet_delay);
device_property_read_u32(dev, "realtek,dmic-clk-rate-hz",
&rt5682->pdata.dmic_clk_rate);
device_property_read_u32(dev, "realtek,dmic-delay-ms",
&rt5682->pdata.dmic_delay);
rt5682->pdata.ldo1_en = of_get_named_gpio(dev->of_node,
"realtek,ldo1-en-gpios", 0);