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Commit 75f50400 authored by Rajendra Nayak's avatar Rajendra Nayak Committed by Rafael J. Wysocki
Browse files

PM / clock_ops: Provide default runtime ops to users 



Most users of PM clocks do the extact same things in the runtime
suspend/resume callbacks. Provide them USE_PM_CLK_RUNTIME_OPS so
as to avoid/remove boilerplate code.

Signed-off-by: default avatarRajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: default avatarKevin Hilman <khilman@linaro.org>
Acked-by: default avatarSantosh Shilimkar <ssantosh@kernel.org>
Acked-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 030bbdbf

drivers/base/power/clock_ops.c

+38 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/clkdev.h>

#include <linux/slab.h>

#include <linux/err.h>

#include <linux/pm_runtime.h>



#ifdef CONFIG_PM
@@ -367,6 +368,43 @@ static int pm_clk_notify(struct notifier_block *nb, 
	return 0;

}



int pm_clk_runtime_suspend(struct device *dev)

{

	int ret;



	dev_dbg(dev, "%s\n", __func__);



	ret = pm_generic_runtime_suspend(dev);

	if (ret) {

		dev_err(dev, "failed to suspend device\n");

		return ret;

	}



	ret = pm_clk_suspend(dev);

	if (ret) {

		dev_err(dev, "failed to suspend clock\n");

		pm_generic_runtime_resume(dev);

		return ret;

	}



	return 0;

}



int pm_clk_runtime_resume(struct device *dev)

{

	int ret;



	dev_dbg(dev, "%s\n", __func__);



	ret = pm_clk_resume(dev);

	if (ret) {

		dev_err(dev, "failed to resume clock\n");

		return ret;

	}



	return pm_generic_runtime_resume(dev);

}



#else /* !CONFIG_PM */



/**

include/linux/pm_clock.h

+10 −0
Original line number Diff line number Diff line
@@ -20,6 +20,16 @@ struct pm_clk_notifier_block { 


struct clk;



#ifdef CONFIG_PM

extern int pm_clk_runtime_suspend(struct device *dev);

extern int pm_clk_runtime_resume(struct device *dev);

#define USE_PM_CLK_RUNTIME_OPS \

	.runtime_suspend = pm_clk_runtime_suspend, \

	.runtime_resume = pm_clk_runtime_resume,

#else

#define USE_PM_CLK_RUNTIME_OPS

#endif



#ifdef CONFIG_PM_CLK

static inline bool pm_clk_no_clocks(struct device *dev)

{