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PM / Runtime: Implement the pm_generic_runtime functions for CONFIG_PM
The pm_generic_runtime_suspend|resume functions were implemented within CONFIG_PM_RUNTIME. As we also may use runtime PM callbacks during system suspend, to put devices into low power state, we need to move the implementation of pm_generic_runtime_suspend|resume to CONFIG_PM. This change gives a power domain provision to invoke a platform driver's runtime PM callback from a power domain's system PM callback. This were earlier prevented by the platform bus, since it uses the pm_generic_runtime_suspend|resume functions as runtime PM callbacks. Cc: Kevin Hilman <khilman@linaro.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -10,7 +10,7 @@
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#include <linux/pm_runtime.h>
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#include <linux/export.h>
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#ifdef CONFIG_PM_RUNTIME
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#ifdef CONFIG_PM
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/**
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* pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
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* @dev: Device to suspend.
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@ -48,7 +48,7 @@ int pm_generic_runtime_resume(struct device *dev)
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return ret;
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}
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EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
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#endif /* CONFIG_PM_RUNTIME */
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_SLEEP
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/**
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@ -23,6 +23,14 @@
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usage_count */
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#define RPM_AUTO 0x08 /* Use autosuspend_delay */
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#ifdef CONFIG_PM
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extern int pm_generic_runtime_suspend(struct device *dev);
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extern int pm_generic_runtime_resume(struct device *dev);
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#else
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static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
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static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
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#endif
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#ifdef CONFIG_PM_RUNTIME
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extern struct workqueue_struct *pm_wq;
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@ -37,8 +45,6 @@ extern void pm_runtime_enable(struct device *dev);
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extern void __pm_runtime_disable(struct device *dev, bool check_resume);
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extern void pm_runtime_allow(struct device *dev);
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extern void pm_runtime_forbid(struct device *dev);
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extern int pm_generic_runtime_suspend(struct device *dev);
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extern int pm_generic_runtime_resume(struct device *dev);
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extern void pm_runtime_no_callbacks(struct device *dev);
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extern void pm_runtime_irq_safe(struct device *dev);
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extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
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@ -142,8 +148,6 @@ static inline bool pm_runtime_active(struct device *dev) { return true; }
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static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
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static inline bool pm_runtime_enabled(struct device *dev) { return false; }
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static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
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static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
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static inline void pm_runtime_no_callbacks(struct device *dev) {}
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static inline void pm_runtime_irq_safe(struct device *dev) {}
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