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authorFabio Estevam <fabio.estevam@nxp.com>2018-02-16 11:58:54 -0200
committerMark Brown <broonie@kernel.org>2018-02-16 15:16:58 +0000
commita8992973edbb2555e956b90f6fe97c4bc14d761d (patch)
tree2d3c7d28e4e96b802ead2fc8b641556cb5864cd5 /sound
parentaba62a9e9a4064c5ea9deb33b5b1392f263cad24 (diff)
downloadlinux-a8992973edbb2555e956b90f6fe97c4bc14d761d.tar.bz2
ASoC: sgtl5000: Fix suspend/resume
Commit 8419caa72702 ("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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/sgtl5000.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index c445a0794a27..c5c76ab8ccf1 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -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;