diff options
| author | Carlos Corbacho <carlos@strangeworlds.co.uk> | 2008-06-21 09:09:27 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2008-07-16 23:27:02 +0200 |
| commit | f2b585b4a31731b17b9769eae523986fa7fddcde (patch) | |
| tree | 6c7271d33a60e2eae1731f5880dc50ddbdfb0faf /drivers/misc | |
| parent | 9991d9f2bc75dc8735932240b67432d4073b8f60 (diff) | |
| download | linux-f2b585b4a31731b17b9769eae523986fa7fddcde.tar.bz2 | |
acer-wmi: Respect framebuffer blanking in backlight
If the framebuffer has requested blanking, turn the backlight down. Also
offer the user the option to do this.
Reported-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/acer-wmi.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c index b82ff25a7b54..e35825f7e7ba 100644 --- a/drivers/misc/acer-wmi.c +++ b/drivers/misc/acer-wmi.c @@ -29,6 +29,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/dmi.h> +#include <linux/fb.h> #include <linux/backlight.h> #include <linux/leds.h> #include <linux/platform_device.h> @@ -830,7 +831,15 @@ static int read_brightness(struct backlight_device *bd) static int update_bl_status(struct backlight_device *bd) { - set_u32(bd->props.brightness, ACER_CAP_BRIGHTNESS); + int intensity = bd->props.brightness; + + if (bd->props.power != FB_BLANK_UNBLANK) + intensity = 0; + if (bd->props.fb_blank != FB_BLANK_UNBLANK) + intensity = 0; + + set_u32(intensity, ACER_CAP_BRIGHTNESS); + return 0; } @@ -852,8 +861,9 @@ static int __devinit acer_backlight_init(struct device *dev) acer_backlight_device = bd; + bd->props.power = FB_BLANK_UNBLANK; + bd->props.brightness = max_brightness; bd->props.max_brightness = max_brightness; - bd->props.brightness = read_brightness(NULL); backlight_update_status(bd); return 0; } |