diff options
| author | Konstantin Karasyov <konstantin.a.karasyov@intel.com> | 2006-05-08 06:00:00 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-05-15 09:16:45 +0200 |
| commit | 0feabb01d93e5801d1127416a66cfc3963280bca (patch) | |
| tree | 8f8a813abfbc82e9c9e6c0d58de0868be163fa67 /drivers/acpi/fan.c | |
| parent | ACPI: pass pm_message_t from acpi_device_suspend() to root_suspend() (diff) | |
| download | linux-0feabb01d93e5801d1127416a66cfc3963280bca.tar.xz linux-0feabb01d93e5801d1127416a66cfc3963280bca.zip | |
ACPI: create acpi_fan_suspend()/acpi_fan_resume()
http://bugzilla.kernel.org/show_bug.cgi?id=5000
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/fan.c')
| -rw-r--r-- | drivers/acpi/fan.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index e8165c4f162a..1cd25784b7a4 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -48,6 +48,8 @@ MODULE_LICENSE("GPL"); static int acpi_fan_add(struct acpi_device *device); static int acpi_fan_remove(struct acpi_device *device, int type); +static int acpi_fan_suspend(struct acpi_device *device, int state); +static int acpi_fan_resume(struct acpi_device *device, int state); static struct acpi_driver acpi_fan_driver = { .name = ACPI_FAN_DRIVER_NAME, @@ -56,6 +58,8 @@ static struct acpi_driver acpi_fan_driver = { .ops = { .add = acpi_fan_add, .remove = acpi_fan_remove, + .suspend = acpi_fan_suspend, + .resume = acpi_fan_resume, }, }; @@ -206,6 +210,10 @@ static int acpi_fan_add(struct acpi_device *device) goto end; } + device->flags.force_power_state = 1; + acpi_bus_set_power(device->handle, state); + device->flags.force_power_state = 0; + result = acpi_fan_add_fs(device); if (result) goto end; @@ -239,6 +247,38 @@ static int acpi_fan_remove(struct acpi_device *device, int type) return_VALUE(0); } +static int acpi_fan_suspend(struct acpi_device *device, int state) +{ + if (!device) + return -EINVAL; + + acpi_bus_set_power(device->handle, ACPI_STATE_D0); + + return AE_OK; +} + +static int acpi_fan_resume(struct acpi_device *device, int state) +{ + int result = 0; + int power_state = 0; + + if (!device) + return -EINVAL; + + result = acpi_bus_get_power(device->handle, &power_state); + if (result) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Error reading fan power state\n")); + return result; + } + + device->flags.force_power_state = 1; + acpi_bus_set_power(device->handle, power_state); + device->flags.force_power_state = 0; + + return result; +} + static int __init acpi_fan_init(void) { int result = 0; |