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UPSTREAM: 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.

Change-Id: Ie37aba46f6ee21be2af404da24ba667e3ca86d6c
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
(cherry picked from git.kernel.org broonie/sound.git topic/rockchip
 commit f0447f6cbb)
This commit is contained in:
Sugar Zhang
2016-09-07 14:27:33 +08:00
committed by Huang, Tao
parent 945920c2d7
commit ed1e3669a3
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);
regcache_cache_only(i2s->regmap, true);
clk_disable_unprepare(i2s->mclk);
return 0;
@@ -73,7 +74,14 @@ static int i2s_runtime_resume(struct device *dev)
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)