1*4882a593Smuzhiyunsysfs interface for analog devices adp8860 backlight driver 2*4882a593Smuzhiyun----------------------------------------------------------- 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunThe backlight brightness control operates at three different levels for the 5*4882a593Smuzhiyunadp8860, adp8861 and adp8863 devices: daylight (level 1), office (level 2) and 6*4882a593Smuzhiyundark (level 3). By default the brightness operates at the daylight brightness 7*4882a593Smuzhiyunlevel. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunSee also /sys/class/backlight/<backlight>/ambient_light_level and 10*4882a593Smuzhiyun/sys/class/backlight/<backlight>/ambient_light_zone. 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l1_daylight_max 14*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l2_office_max 15*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l3_dark_max 16*4882a593SmuzhiyunDate: Apr, 2010 17*4882a593SmuzhiyunKernelVersion: v2.6.35 18*4882a593SmuzhiyunContact: Michael Hennerich <michael.hennerich@analog.com> 19*4882a593SmuzhiyunDescription: 20*4882a593Smuzhiyun (RW) Maximum current setting for the backlight when brightness 21*4882a593Smuzhiyun is at one of the three levels (daylight, office or dark). This 22*4882a593Smuzhiyun is an input code between 0 and 127, which is transformed to a 23*4882a593Smuzhiyun value between 0 mA and 30 mA using linear or non-linear 24*4882a593Smuzhiyun algorithms. 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun 27*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l1_daylight_dim 28*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l2_office_dim 29*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/l3_dark_dim 30*4882a593SmuzhiyunDate: Apr, 2010 31*4882a593SmuzhiyunKernelVersion: v2.6.35 32*4882a593SmuzhiyunContact: Michael Hennerich <michael.hennerich@analog.com> 33*4882a593SmuzhiyunDescription: 34*4882a593Smuzhiyun (RW) Dim current setting for the backlight when brightness is at 35*4882a593Smuzhiyun one of the three levels (daylight, office or dark). This is an 36*4882a593Smuzhiyun input code between 0 and 127, which is transformed to a value 37*4882a593Smuzhiyun between 0 mA and 30 mA using linear or non-linear algorithms. 38