diff options
| author | Matthew Garrett <mjg@redhat.com> | 2011-03-23 00:30:21 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 01:43:59 +0100 |
| commit | bb7ca747f8d6243b3943c5b133048652020f4a50 (patch) | |
| tree | b40e879a7b26e3763aea2af2d4dd9079483de11e /include | |
| parent | drivers/leds/leds-lp5523.c: world-writable engine* sysfs files (diff) | |
| download | linux-bb7ca747f8d6243b3943c5b133048652020f4a50.tar.xz linux-bb7ca747f8d6243b3943c5b133048652020f4a50.zip | |
backlight: add backlight type
There may be multiple ways of controlling the backlight on a given
machine. Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/backlight.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 4a3d52e545e1..5ffc6dda4675 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -32,6 +32,13 @@ enum backlight_update_reason { BACKLIGHT_UPDATE_SYSFS, }; +enum backlight_type { + BACKLIGHT_RAW = 1, + BACKLIGHT_PLATFORM, + BACKLIGHT_FIRMWARE, + BACKLIGHT_TYPE_MAX, +}; + struct backlight_device; struct fb_info; @@ -62,6 +69,8 @@ struct backlight_properties { /* FB Blanking active? (values as for power) */ /* Due to be removed, please use (state & BL_CORE_FBBLANK) */ int fb_blank; + /* Backlight type */ + enum backlight_type type; /* Flags used to signal drivers of state changes */ /* Upper 4 bits are reserved for driver internal use */ unsigned int state; |