From afa99da863e8e00efd8ce2f8840ed31d50abb889 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Thu, 29 Dec 2016 12:34:06 +0100 Subject: [PATCH] ASoC: samsung: i2s: Let runtime PM operations to control op_clk too This patch adds handling of parent operational clock to runtime PM callbacks. This way it is ensured that when I2S module is in runtime suspended state, all its parent clocks are disabled and unprepared. Signed-off-by: Marek Szyprowski Signed-off-by: Mark Brown --- sound/soc/samsung/i2s.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index df3fae862665..b2b9ee4a177a 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -546,6 +546,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, if (WARN_ON(IS_ERR(i2s->op_clk))) { ret = PTR_ERR(i2s->op_clk); + i2s->op_clk = NULL; goto err; } @@ -1121,6 +1122,8 @@ static int i2s_runtime_suspend(struct device *dev) i2s->suspend_i2scon = readl(i2s->addr + I2SCON); i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); + if (i2s->op_clk) + clk_disable_unprepare(i2s->op_clk); clk_disable_unprepare(i2s->clk); return 0; @@ -1131,6 +1134,8 @@ static int i2s_runtime_resume(struct device *dev) struct i2s_dai *i2s = dev_get_drvdata(dev); clk_prepare_enable(i2s->clk); + if (i2s->op_clk) + clk_prepare_enable(i2s->op_clk); writel(i2s->suspend_i2scon, i2s->addr + I2SCON); writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);