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asus-laptop: Add *_led_get() functions

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Add support for getting led brightness directly from
the hardware. Currently we don't need it, but it is needed
to support keyboard backlight/led.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Corentin Chary 2009-08-28 12:56:47 +00:00 committed by Len Brown
parent 1d4a3800c7
commit abfa57e15a
1 changed files with 8 additions and 0 deletions
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8
drivers/platform/x86/asus-laptop.c
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@ -246,12 +246,15 @@ static struct workqueue_struct *led_workqueue;
#define ASUS_LED(object, ledname) \
static void object##_led_set(struct led_classdev *led_cdev, \
enum led_brightness value); \
static enum led_brightness object##_led_get( \
struct led_classdev *led_cdev); \
static void object##_led_update(struct work_struct *ignored); \
static int object##_led_wk; \
static DECLARE_WORK(object##_led_work, object##_led_update); \
static struct led_classdev object##_led = { \
.name = "asus::" ledname, \
.brightness_set = object##_led_set, \
.brightness_get = object##_led_get, \
}
ASUS_LED(mled, "mail");
@ -399,6 +402,11 @@ static void write_status(acpi_handle handle, int out, int mask)
{ \
int value = object##_led_wk; \
write_status(object##_set_handle, value, (mask)); \
} \
static enum led_brightness object##_led_get( \
struct led_classdev *led_cdev) \
{ \
return led_cdev->brightness; \
}
ASUS_LED_HANDLER(mled, MLED_ON);