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| author | Richard Purdie <rpurdie@linux.intel.com> | 2009-01-06 21:00:19 +0000 |
|---|---|---|
| committer | Richard Purdie <rpurdie@linux.intel.com> | 2009-01-08 15:37:43 +0000 |
| commit | c835ee7f4154992e6cf0674d7ee136f5d36247a4 (patch) | |
| tree | e886aecbf4ce1389ca649a20891315499ff9054d /include/linux/backlight.h | |
| parent | 9be1df98bca44dbe3769cd22f4ab8122b76c5313 (diff) | |
| download | lwn-c835ee7f4154992e6cf0674d7ee136f5d36247a4.tar.gz lwn-c835ee7f4154992e6cf0674d7ee136f5d36247a4.zip | |
backlight: Add suspend/resume support to the backlight core
Add suspend/resume support to the backlight core and enable use of it
by appropriate drivers.
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'include/linux/backlight.h')
| -rw-r--r-- | include/linux/backlight.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 1ee9488ca2e4..79ca2da81c87 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -31,6 +31,10 @@ struct backlight_device; struct fb_info; struct backlight_ops { + unsigned int options; + +#define BL_CORE_SUSPENDRESUME (1 << 0) + /* Notify the backlight driver some property has changed */ int (*update_status)(struct backlight_device *); /* Return the current backlight brightness (accounting for power, @@ -51,7 +55,19 @@ struct backlight_properties { modes; 4: full off), see FB_BLANK_XXX */ int power; /* FB Blanking active? (values as for power) */ + /* Due to be removed, please use (state & BL_CORE_FBBLANK) */ int fb_blank; + /* Flags used to signal drivers of state changes */ + /* Upper 4 bits are reserved for driver internal use */ + unsigned int state; + +#define BL_CORE_SUSPENDED (1 << 0) /* backlight is suspended */ +#define BL_CORE_FBBLANK (1 << 1) /* backlight is under an fb blank event */ +#define BL_CORE_DRIVER4 (1 << 28) /* reserved for driver specific use */ +#define BL_CORE_DRIVER3 (1 << 29) /* reserved for driver specific use */ +#define BL_CORE_DRIVER2 (1 << 30) /* reserved for driver specific use */ +#define BL_CORE_DRIVER1 (1 << 31) /* reserved for driver specific use */ + }; struct backlight_device { |