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apple_bl: Add register/unregister functions

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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>
This commit is contained in:
Seth Forshee 2012-03-16 14:41:21 -05:00 • committed by Matthew Garrett
parent f11f999e98
commit 83e72dd97a
2 changed files with 47 additions and 2 deletions
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26
include/linux/apple_bl.h Normal file
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@ -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 */