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Commit 3737b2b1 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Jesse Barnes
Browse files

ACPI: Introduce acpi_bus_power_manageable function 



Introduce function acpi_bus_power_manageable() allowing other
(dependent) subsystems to check if ACPI is able to power manage given
device.  This may be useful, for example, for PCI device power
management.

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent c6c4f070

drivers/acpi/bus.c

+11 −0
Original line number Diff line number Diff line
@@ -295,6 +295,17 @@ int acpi_bus_set_power(acpi_handle handle, int state) 


EXPORT_SYMBOL(acpi_bus_set_power);



bool acpi_bus_power_manageable(acpi_handle handle)

{

	struct acpi_device *device;

	int result;



	result = acpi_bus_get_device(handle, &device);

	return result ? false : device->flags.power_manageable;

}



EXPORT_SYMBOL(acpi_bus_power_manageable);



/* --------------------------------------------------------------------------

                                Event Management

   -------------------------------------------------------------------------- */

include/acpi/acpi_bus.h

+1 −0
Original line number Diff line number Diff line
@@ -335,6 +335,7 @@ void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context); 
int acpi_bus_get_status(struct acpi_device *device);

int acpi_bus_get_power(acpi_handle handle, int *state);

int acpi_bus_set_power(acpi_handle handle, int state);

bool acpi_bus_power_manageable(acpi_handle handle);

#ifdef CONFIG_ACPI_PROC_EVENT

int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);

int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);