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Commit 5b1d3c34 authored by R. Chandrasekar's avatar R. Chandrasekar Committed by Mark Brown
Browse files

ASoC: Samsung: I2S: Add support for runtime S2R 



This patch adds runtime suspend to resume support for I2S.
I2S clk is disabled at suspend and enabled at resume.

Signed-off-by: default avatarR. Chandrasekar <rcsekar@samsung.com>
Signed-off-by: default avatarPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 313367e7

sound/soc/samsung/i2s.c

+26 −0
Original line number Diff line number Diff line
@@ -1071,6 +1071,26 @@ static inline int samsung_i2s_get_driver_data(struct platform_device *pdev) 
		return platform_get_device_id(pdev)->driver_data;

}



#ifdef CONFIG_PM_RUNTIME

static int i2s_runtime_suspend(struct device *dev)

{

	struct i2s_dai *i2s = dev_get_drvdata(dev);



	clk_disable_unprepare(i2s->clk);



	return 0;

}



static int i2s_runtime_resume(struct device *dev)

{

	struct i2s_dai *i2s = dev_get_drvdata(dev);



	clk_prepare_enable(i2s->clk);



	return 0;

}

#endif /* CONFIG_PM_RUNTIME */



static int samsung_i2s_probe(struct platform_device *pdev)

{

	struct i2s_dai *pri_dai, *sec_dai = NULL;
@@ -1288,6 +1308,11 @@ static const struct of_device_id exynos_i2s_match[] = { 
MODULE_DEVICE_TABLE(of, exynos_i2s_match);

#endif



static const struct dev_pm_ops samsung_i2s_pm = {

	SET_RUNTIME_PM_OPS(i2s_runtime_suspend,

				i2s_runtime_resume, NULL)

};



static struct platform_driver samsung_i2s_driver = {

	.probe  = samsung_i2s_probe,

	.remove = samsung_i2s_remove,
@@ -1296,6 +1321,7 @@ static struct platform_driver samsung_i2s_driver = { 
		.name = "samsung-i2s",

		.owner = THIS_MODULE,

		.of_match_table = of_match_ptr(exynos_i2s_match),

		.pm = &samsung_i2s_pm,

	},

};