ACPI / PM: Provide device PM functions operating on struct acpi_device
If the caller of acpi_bus_set_power() already has a pointer to the struct acpi_device object corresponding to the device in question, it doesn't make sense for it to go through acpi_bus_get_device(), which may be costly, because it involves acquiring the global ACPI namespace mutex. For this reason, export the function operating on struct acpi_device objects used internally by acpi_bus_set_power(), so that it may be called instead of acpi_bus_set_power() in the above case, and change its name to acpi_device_set_power(). Additionally, introduce two inline wrappers for checking ACPI PM capabilities of devices represented by struct acpi_device objects. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@@ -339,6 +339,7 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle,
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unsigned long long *sta);
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int acpi_bus_get_status(struct acpi_device *device);
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int acpi_bus_set_power(acpi_handle handle, int state);
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int acpi_device_set_power(struct acpi_device *device, int state);
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int acpi_bus_update_power(acpi_handle handle, int *state_p);
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bool acpi_bus_power_manageable(acpi_handle handle);
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bool acpi_bus_can_wakeup(acpi_handle handle);
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@@ -483,6 +484,16 @@ static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
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}
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#endif
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static inline bool acpi_device_power_manageable(struct acpi_device *adev)
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{
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return adev->flags.power_manageable;
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}
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static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
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{
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return adev->wakeup.flags.valid;
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}
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#else /* CONFIG_ACPI */
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static inline int register_acpi_bus_type(void *bus) { return 0; }
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