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ASoC: tas5086: add suspend callback

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When going to suspend, shut down all channels and re-do the init
procedure at resume time.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Daniel Mack 2013-10-01 14:48:26 +02:00 committed by Mark Brown
parent d5fd3ccc2d
commit 25c84cc1ac
1 changed files with 28 additions and 2 deletions
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30
sound/soc/codecs/tas5086.c
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@ -762,14 +762,39 @@ static struct snd_soc_dai_driver tas5086_dai = {
};
#ifdef CONFIG_PM
static int tas5086_soc_suspend(struct snd_soc_codec *codec)
{
struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
int ret;
/* Shut down all channels */
ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x60);
if (ret < 0)
return ret;
return 0;
}
static int tas5086_soc_resume(struct snd_soc_codec *codec)
{
struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
int ret;
/* Restore codec state */
return regcache_sync(priv->regmap);
tas5086_reset(priv);
regcache_mark_dirty(priv->regmap);
ret = tas5086_init(codec->dev, priv);
if (ret < 0)
return ret;
ret = regcache_sync(priv->regmap);
if (ret < 0)
return ret;
return 0;
}
#else
#define tas5086_soc_suspend NULL
#define tas5086_soc_resume NULL
#endif /* CONFIG_PM */
@ -832,6 +857,7 @@ static int tas5086_remove(struct snd_soc_codec *codec)
static struct snd_soc_codec_driver soc_codec_dev_tas5086 = {
.probe = tas5086_probe,
.remove = tas5086_remove,
.suspend = tas5086_soc_suspend,
.resume = tas5086_soc_resume,
.controls = tas5086_controls,
.num_controls = ARRAY_SIZE(tas5086_controls),