drivers/video/backlight/aat2870_bl.c: fix setting max_current
authorAxel Lin <axel.lin@gmail.com>
Wed, 3 Aug 2011 23:21:17 +0000 (16:21 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 4 Aug 2011 00:25:22 +0000 (14:25 -1000)
commit5d6f921b42749d1a70441685b7a4f2801e12ebfb
tree6c2bdf6a7de23e7ec7d8d5990586e1a0527164b0
parent4c4dd903e72507c853b8c2b04b22e0d0c721fd93
drivers/video/backlight/aat2870_bl.c: fix setting max_current

 - Current implementation tests wrong value for setting
   aat2870_bl->max_current.

 - In the current implementation, we cannot differentiate between 2 cases:

   a) if pdata->max_current is not set , or

   b) pdata->max_current is set to AAT2870_CURRENT_0_45 (which is also 0).

   Fix it by setting AAT2870_CURRENT_0_45 to be 1 and adjust the equation in
   aat2870_brightness() accordingly.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Tested-by: Jin Park <jinyoungp@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/video/backlight/aat2870_bl.c
include/linux/mfd/aat2870.h