From f0447f6cbb202e1be8244d15aee390a96d65e490 Mon Sep 17 00:00:00 2001 From: Sugar Zhang Date: Wed, 7 Sep 2016 14:27:33 +0800 Subject: [PATCH] ASoC: rockchip: i2s: restore register during runtime_suspend/resume cycle 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 Signed-off-by: Mark Brown --- sound/soc/rockchip/rockchip_i2s.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c index 652e8c5ea166..974915cb4c4f 100644 --- a/sound/soc/rockchip/rockchip_i2s.c +++ b/sound/soc/rockchip/rockchip_i2s.c @@ -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) -- 2.20.1