• Robert Morell's avatar
    pwm_backlight: add check_fb() hook · ef0a5e80
    Robert Morell authored
    In systems with multiple framebuffer devices, one of the devices might be
    blanked while another is unblanked.  In order for the backlight blanking
    logic to know whether to turn off the backlight for a particular
    framebuffer's blanking notification, it needs to be able to check if a
    given framebuffer device corresponds to the backlight.
    
    This plumbs the check_fb hook from core backlight through the
    pwm_backlight helper to allow platform code to plug in a check_fb hook.
    Signed-off-by: default avatarRobert Morell <rmorell@nvidia.com>
    Cc: Richard Purdie <rpurdie@rpsys.net>
    Cc: Arun Murthy <arun.murthy@stericsson.com>
    Cc: Linus Walleij <linus.walleij@stericsson.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    ef0a5e80
pwm_bl.c 5.22 KB