PM: Run-time PM platform device bus support (9d730229) · Commits · 戴 / test

drivers/base/platform.c

+37 −9

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		#include <linux/bootmem.h>
		#include <linux/err.h>
		#include <linux/slab.h>
		#include <linux/pm_runtime.h>

		#include "base.h"

		@@ -656,6 +657,13 @@ static void platform_pm_complete(struct device *dev)
		drv->pm->complete(dev);
		}

		#else /* !CONFIG_PM_SLEEP */

		#define platform_pm_prepare NULL
		#define platform_pm_complete NULL

		#endif /* !CONFIG_PM_SLEEP */

		#ifdef CONFIG_SUSPEND

		static int platform_pm_suspend(struct device *dev)
		@@ -886,6 +894,31 @@ static int platform_pm_restore_noirq(struct device *dev)

		#endif /* !CONFIG_HIBERNATION */

		#ifdef CONFIG_PM_RUNTIME

		int __weak platform_pm_runtime_suspend(struct device *dev)
		{
		return -ENOSYS;
		};

		int __weak platform_pm_runtime_resume(struct device *dev)
		{
		return -ENOSYS;
		};

		int __weak platform_pm_runtime_idle(struct device *dev)
		{
		return -ENOSYS;
		};

		#else /* !CONFIG_PM_RUNTIME */

		#define platform_pm_runtime_suspend NULL
		#define platform_pm_runtime_resume NULL
		#define platform_pm_runtime_idle NULL

		#endif /* !CONFIG_PM_RUNTIME */

		static const struct dev_pm_ops platform_dev_pm_ops = {
		.prepare = platform_pm_prepare,
		.complete = platform_pm_complete,
		@@ -901,22 +934,17 @@ static const struct dev_pm_ops platform_dev_pm_ops = {
		.thaw_noirq = platform_pm_thaw_noirq,
		.poweroff_noirq = platform_pm_poweroff_noirq,
		.restore_noirq = platform_pm_restore_noirq,
		.runtime_suspend = platform_pm_runtime_suspend,
		.runtime_resume = platform_pm_runtime_resume,
		.runtime_idle = platform_pm_runtime_idle,
		};

		#define PLATFORM_PM_OPS_PTR (&platform_dev_pm_ops)

		#else /* !CONFIG_PM_SLEEP */

		#define PLATFORM_PM_OPS_PTR NULL

		#endif /* !CONFIG_PM_SLEEP */

		struct bus_type platform_bus_type = {
		.name = "platform",
		.dev_attrs = platform_dev_attrs,
		.match = platform_match,
		.uevent = platform_uevent,
		.pm = PLATFORM_PM_OPS_PTR,
		.pm = &platform_dev_pm_ops,
		};
		EXPORT_SYMBOL_GPL(platform_bus_type);

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