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Commit afa99da8 authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Mark Brown
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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: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e7e52dfc

sound/soc/samsung/i2s.c

+5 −0
Original line number Original line Diff line number Diff line
@@ -546,6 +546,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, 




			if (WARN_ON(IS_ERR(i2s->op_clk))) {

			if (WARN_ON(IS_ERR(i2s->op_clk))) {

				ret = PTR_ERR(i2s->op_clk);

				ret = PTR_ERR(i2s->op_clk);

				i2s->op_clk = NULL;

				goto err;

				goto err;

			}

			}
@@ -1121,6 +1122,8 @@ static int i2s_runtime_suspend(struct device *dev) 
	i2s->suspend_i2scon = readl(i2s->addr + I2SCON);

	i2s->suspend_i2scon = readl(i2s->addr + I2SCON);

	i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);

	i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);





	if (i2s->op_clk)

		clk_disable_unprepare(i2s->op_clk);

	clk_disable_unprepare(i2s->clk);

	clk_disable_unprepare(i2s->clk);





	return 0;

	return 0;
@@ -1131,6 +1134,8 @@ static int i2s_runtime_resume(struct device *dev) 
	struct i2s_dai *i2s = dev_get_drvdata(dev);

	struct i2s_dai *i2s = dev_get_drvdata(dev);





	clk_prepare_enable(i2s->clk);

	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_i2scon, i2s->addr + I2SCON);

	writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);

	writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);