diff options
| author | Seth Forshee <seth.forshee@canonical.com> | 2012-03-16 14:41:21 -0500 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2012-03-22 09:31:55 -0400 |
| commit | 83e72dd97a25a831ff270ce4437416943a1e4b36 (patch) | |
| tree | 9eeaaa019cc92527469d2976238c1443eadeab21 /include/linux/apple_bl.h | |
| parent | f11f999e989061952f1a27bd0c49645a46d13173 (diff) | |
apple_bl: Add register/unregister functions
Add functions to allow other modules to enable or disable apple_bl. This
will be used by the gmux driver to disable apple_bl when the gmux is
present, as it is a better and more reliable option for brightness
control.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'include/linux/apple_bl.h')
| -rw-r--r-- | include/linux/apple_bl.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/apple_bl.h b/include/linux/apple_bl.h new file mode 100644 index 000000000000..47bedc0eee69 --- /dev/null +++ b/include/linux/apple_bl.h @@ -0,0 +1,26 @@ +/* + * apple_bl exported symbols + */ + +#ifndef _LINUX_APPLE_BL_H +#define _LINUX_APPLE_BL_H + +#ifdef CONFIG_BACKLIGHT_APPLE + +extern int apple_bl_register(void); +extern void apple_bl_unregister(void); + +#else /* !CONFIG_BACKLIGHT_APPLE */ + +static inline int apple_bl_register(void) +{ + return 0; +} + +static inline void apple_bl_unregister(void) +{ +} + +#endif /* !CONFIG_BACKLIGHT_APPLE */ + +#endif /* _LINUX_APPLE_BL_H */ |