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ASoC: rockchip: i2s: restore register during runtime_suspend/resume cycle

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when step into runtime_suspend, i2s pd will be disabled and loss state.
so need to restore register when runtime_resume.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sugar Zhang 2016-09-07 14:27:33 +08:00 • committed by Mark Brown
parent f506513ad8
commit f0447f6cbb
1 changed files with 9 additions and 1 deletions
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10
sound/soc/rockchip/rockchip_i2s.c
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@ -57,6 +57,7 @@ static int i2s_runtime_suspend(struct device *dev)
{ {
struct rk_i2s_dev *i2s = dev_get_drvdata(dev); struct rk_i2s_dev *i2s = dev_get_drvdata(dev);
regcache_cache_only(i2s->regmap, true);
clk_disable_unprepare(i2s->mclk); clk_disable_unprepare(i2s->mclk);
return 0; return 0;
@ -73,7 +74,14 @@ static int i2s_runtime_resume(struct device *dev)
return ret; return ret;
} }
return 0; regcache_cache_only(i2s->regmap, false);
regcache_mark_dirty(i2s->regmap);
ret = regcache_sync(i2s->regmap);
if (ret)
clk_disable_unprepare(i2s->mclk);
return ret;
} }
static inline struct rk_i2s_dev *to_info(struct snd_soc_dai *dai) static inline struct rk_i2s_dev *to_info(struct snd_soc_dai *dai)