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drivers/video/backlight/aat2870_bl.c: fix setting max_current

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- 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>
This commit is contained in:
Axel Lin
2011-08-03 16:21:17 -07:00
committed by Linus Torvalds
parent 4c4dd903e7
commit 5d6f921b42
2 changed files with 3 additions and 3 deletions
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2
include/linux/mfd/aat2870.h
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@@ -89,7 +89,7 @@ enum aat2870_id {
/* Backlight current magnitude (mA) */
enum aat2870_current {
AAT2870_CURRENT_0_45,
AAT2870_CURRENT_0_45 = 1,
AAT2870_CURRENT_0_90,
AAT2870_CURRENT_1_80,
AAT2870_CURRENT_2_70,