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ASoC: sgtl5000: Fix suspend/resume 

Commit 8419caa727 ("ASoC: sgtl5000: Do not disable regulators in
SND_SOC_BIAS_OFF") causes the sgtl5000 to fail after a suspend/resume
sequence:

Playing WAVE '/media/a2002011001-e02.wav' : Signed 16 bit Little
Endian, Rate 44100 Hz, Stereo
aplay: pcm_write:2051: write error: Input/output error

The problem is caused by the fact that the aforementioned commit
dropped the cache handling, so re-introduce the register map
resync to fix the problem.

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
This commit is contained in:
Fabio Estevam 2018-02-16 11:58:54 -02:00 committed by Mark Brown
parent aba62a9e9a
commit a8992973ed
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GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 0 deletions
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11
sound/soc/codecs/sgtl5000.c
View File

@ -876,15 +876,26 @@ static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
static int sgtl5000_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct sgtl5000_priv *sgtl = snd_soc_codec_get_drvdata(codec);
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
case SND_SOC_BIAS_STANDBY:
regcache_cache_only(sgtl->regmap, false);
ret = regcache_sync(sgtl->regmap);
if (ret) {
regcache_cache_only(sgtl->regmap, true);
return ret;
}
snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
SGTL5000_REFTOP_POWERUP,
SGTL5000_REFTOP_POWERUP);
break;
case SND_SOC_BIAS_OFF:
regcache_cache_only(sgtl->regmap, true);
snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
SGTL5000_REFTOP_POWERUP, 0);
break;