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arch/arm/mach-ux500/board-u5500.c: calibrate ALS input voltage

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Provide the support for auto calibration of ALS Zone boundaries based on
min/max ALS input voltage.

Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Shreshtha Kumar Sahu
2011-07-25 17:13:17 -07:00
committed by Linus Torvalds
parent 2504f6da50
commit 40b1445b1b
2 changed files with 58 additions and 14 deletions
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5
include/linux/led-lm3530.h
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@@ -84,6 +84,8 @@ enum lm3530_als_mode {
* @brt_ramp_rise: rate of rise of led current
* @als1_resistor_sel: internal resistance from ALS1 input to ground
* @als2_resistor_sel: internal resistance from ALS2 input to ground
* @als_vmin: als input voltage calibrated for max brightness in mV
* @als_vmax: als input voltage calibrated for min brightness in mV
* @brt_val: brightness value (0-255)
*/
struct lm3530_platform_data {
@@ -101,6 +103,9 @@ struct lm3530_platform_data {
u8 als1_resistor_sel;
u8 als2_resistor_sel;
u32 als_vmin;
u32 als_vmax;
u8 brt_val;
};