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ASoC: arizona: Add delay for output disable

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Give the output disable sequence a chance to fully complete, otherwise
there is a danger we may remove the clock before it is finished
resulting in a pop noise. The delay for each output must be cumulative
and these are coalesced into a single delay.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax
2015-01-20 16:31:50 +00:00
committed by Mark Brown
parent a6b3db2c83
commit 054e1b4892
5 changed files with 68 additions and 14 deletions
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37
sound/soc/codecs/arizona.c
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@@ -734,6 +734,8 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct arizona_priv *priv = snd_soc_codec_get_drvdata(w->codec);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
switch (w->shift) {
@@ -750,6 +752,39 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w,
break;
}
break;
case SND_SOC_DAPM_PRE_PMD:
switch (w->shift) {
case ARIZONA_OUT1L_ENA_SHIFT:
case ARIZONA_OUT1R_ENA_SHIFT:
case ARIZONA_OUT2L_ENA_SHIFT:
case ARIZONA_OUT2R_ENA_SHIFT:
case ARIZONA_OUT3L_ENA_SHIFT:
case ARIZONA_OUT3R_ENA_SHIFT:
priv->out_down_pending++;
priv->out_down_delay++;
break;
default:
break;
}
break;
case SND_SOC_DAPM_POST_PMD:
switch (w->shift) {
case ARIZONA_OUT1L_ENA_SHIFT:
case ARIZONA_OUT1R_ENA_SHIFT:
case ARIZONA_OUT2L_ENA_SHIFT:
case ARIZONA_OUT2R_ENA_SHIFT:
case ARIZONA_OUT3L_ENA_SHIFT:
case ARIZONA_OUT3R_ENA_SHIFT:
priv->out_down_pending--;
if (!priv->out_down_pending) {
msleep(priv->out_down_delay);
priv->out_down_delay = 0;
}
break;
default:
break;
}
break;
}
return 0;
@@ -772,6 +807,8 @@ int arizona_hp_ev(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_PRE_PMD:
val = 0;
break;
case SND_SOC_DAPM_POST_PMD:
return arizona_out_ev(w, kcontrol, event);
default:
return -EINVAL;
}