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6   1.5 A Synchronous Boost LED Flash Driver w/ High-Side Current Source
10       - Daniel Jeong
12 	Contact:Daniel Jeong(daniel.jeong-at-ti.com, gshark.jeong-at-gmail.com)
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21 In Flash Mode, the LED current source(LED) provides 16 target current levels
26 LM3556 Flash can be controlled through /sys/class/leds/flash/brightness file
28 * if STROBE pin is enabled, below example control brightness only, and
35 	#echo 0 > /sys/class/leds/flash/brightness
39 	#echo 1 > /sys/class/leds/flash/brightness
45 	#echo 16 > /sys/class/leds/flash/brightness
54 LM3556 torch can be controlled through /sys/class/leds/torch/brightness file.
55 * if TORCH pin is enabled, below example control brightness only,
62 	#echo 0 > /sys/class/leds/torch/brightness
66 	#echo 1 > /sys/class/leds/torch/brightness
72 	#echo 8 > /sys/class/leds/torch/brightness
78 and 4 patterns are pre-defined in indicator_pattern array.
80 According to N-lank, Pulse time and N Period values, different pattern wiill
84 Please refer datasheet for more detail about N-Blank, Pulse time and N Period.
98 Indicator brightness can be controlled through
99 sys/class/leds/indicator/brightness file.
105 	#echo 0 > /sys/class/leds/indicator/brightness
109 	#echo 1 > /sys/class/leds/indicator/brightness
115 	#echo 8 > /sys/class/leds/indicator/brightness
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121 according to include/linux/platform_data/leds-lm3556.h, set the i2c board info