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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-02 01:40:45 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-15 00:15:18 +0100
commit078eb12648c2f8bba48921f60ec2cec3e1bbc051 (patch)
tree18a669b4363a520e89213f9ae4d326611cab5cca /include/acpi
parentdee8370cc87e505ef39567f0974e73d59e75d76b (diff)
downloadlinux-078eb12648c2f8bba48921f60ec2cec3e1bbc051.tar.bz2
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>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index a635942bcd51..35812b6e0427 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -339,6 +339,7 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle,
unsigned long long *sta);
int acpi_bus_get_status(struct acpi_device *device);
int acpi_bus_set_power(acpi_handle handle, int state);
+int acpi_device_set_power(struct acpi_device *device, int state);
int acpi_bus_update_power(acpi_handle handle, int *state_p);
bool acpi_bus_power_manageable(acpi_handle handle);
bool acpi_bus_can_wakeup(acpi_handle handle);
@@ -483,6 +484,16 @@ static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
}
#endif
+static inline bool acpi_device_power_manageable(struct acpi_device *adev)
+{
+ return adev->flags.power_manageable;
+}
+
+static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
+{
+ return adev->wakeup.flags.valid;
+}
+
#else /* CONFIG_ACPI */
static inline int register_acpi_bus_type(void *bus) { return 0; }