1*4882a593Smuzhiyunsysfs interface for analog devices adp5520(01) backlight driver 2*4882a593Smuzhiyun--------------------------------------------------------------- 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunThe backlight brightness control operates at three different levels for the 5*4882a593Smuzhiyunadp5520 and adp5501 devices: daylight (level 1), office (level 2) and dark 6*4882a593Smuzhiyun(level 3). By default the brightness operates at the daylight brightness level. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/daylight_max 9*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/office_max 10*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/dark_max 11*4882a593SmuzhiyunDate: Sep, 2009 12*4882a593SmuzhiyunKernelVersion: v2.6.32 13*4882a593SmuzhiyunContact: Michael Hennerich <michael.hennerich@analog.com> 14*4882a593SmuzhiyunDescription: 15*4882a593Smuzhiyun (RW) Maximum current setting for the backlight when brightness 16*4882a593Smuzhiyun is at one of the three levels (daylight, office or dark). This 17*4882a593Smuzhiyun is an input code between 0 and 127, which is transformed to a 18*4882a593Smuzhiyun value between 0 mA and 30 mA using linear or non-linear 19*4882a593Smuzhiyun algorithms. 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/daylight_dim 22*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/office_dim 23*4882a593SmuzhiyunWhat: /sys/class/backlight/<backlight>/dark_dim 24*4882a593SmuzhiyunDate: Sep, 2009 25*4882a593SmuzhiyunKernelVersion: v2.6.32 26*4882a593SmuzhiyunContact: Michael Hennerich <michael.hennerich@analog.com> 27*4882a593SmuzhiyunDescription: 28*4882a593Smuzhiyun (RW) Dim current setting for the backlight when brightness is at 29*4882a593Smuzhiyun one of the three levels (daylight, office or dark). This is an 30*4882a593Smuzhiyun input code between 0 and 127, which is transformed to a value 31*4882a593Smuzhiyun between 0 mA and 30 mA using linear or non-linear algorithms. 32