1*09f12730SPavel Machek-*- org -*- 2*09f12730SPavel Machek 3*09f12730SPavel MachekIt is somehow important to provide consistent interface to the 4*09f12730SPavel Machekuserland. LED devices have one problem there, and that is naming of 5*09f12730SPavel Machekdirectories in /sys/class/leds. It would be nice if userland would 6*09f12730SPavel Machekjust know right "name" for given LED function, but situation got more 7*09f12730SPavel Machekcomplex. 8*09f12730SPavel Machek 9*09f12730SPavel MachekAnyway, if backwards compatibility is not an issue, new code should 10*09f12730SPavel Machekuse one of the "good" names from this list, and you should extend the 11*09f12730SPavel Macheklist where applicable. 12*09f12730SPavel Machek 13*09f12730SPavel MachekLegacy names are listed, too; in case you are writing application that 14*09f12730SPavel Machekwants to use particular feature, you should probe for good name, first, 15*09f12730SPavel Machekbut then try the legacy ones, too. 16*09f12730SPavel Machek 17*09f12730SPavel MachekNotice there's a list of functions in include/dt-bindings/leds/common.h . 18*09f12730SPavel Machek 19*09f12730SPavel Machek* Keyboards 20*09f12730SPavel Machek 21*09f12730SPavel MachekGood: "input*:*:capslock" 22*09f12730SPavel MachekGood: "input*:*:scrolllock" 23*09f12730SPavel MachekGood: "input*:*:numlock" 24*09f12730SPavel MachekLegacy: "shift-key-light" (Motorola Droid 4, capslock) 25*09f12730SPavel Machek 26*09f12730SPavel MachekSet of common keyboard LEDs, going back to PC AT or so. 27*09f12730SPavel Machek 28*09f12730SPavel MachekLegacy: "tpacpi::thinklight" (IBM/Lenovo Thinkpads) 29*09f12730SPavel MachekLegacy: "lp5523:kb{1,2,3,4,5,6}" (Nokia N900) 30*09f12730SPavel Machek 31*09f12730SPavel MachekFrontlight/backlight of main keyboard. 32*09f12730SPavel Machek 33*09f12730SPavel MachekLegacy: "button-backlight" (Motorola Droid 4) 34*09f12730SPavel Machek 35*09f12730SPavel MachekSome phones have touch buttons below screen; it is different from main 36*09f12730SPavel Machekkeyboard. And this is their backlight. 37*09f12730SPavel Machek 38*09f12730SPavel Machek* Sound subsystem 39*09f12730SPavel Machek 40*09f12730SPavel MachekGood: "platform:*:mute" 41*09f12730SPavel MachekGood: "platform:*:micmute" 42*09f12730SPavel Machek 43*09f12730SPavel MachekLEDs on notebook body, indicating that sound input / output is muted. 44*09f12730SPavel Machek 45*09f12730SPavel Machek* System notification 46*09f12730SPavel Machek 47*09f12730SPavel MachekLegacy: "status-led:{red,green,blue}" (Motorola Droid 4) 48*09f12730SPavel MachekLegacy: "lp5523:{r,g,b}" (Nokia N900) 49*09f12730SPavel Machek 50*09f12730SPavel MachekPhones usually have multi-color status LED. 51*09f12730SPavel Machek 52*09f12730SPavel Machek* Power management 53*09f12730SPavel Machek 54*09f12730SPavel MachekGood: "platform:*:charging" (allwinner sun50i) 55*09f12730SPavel Machek 56*09f12730SPavel Machek* Screen 57*09f12730SPavel Machek 58*09f12730SPavel MachekGood: ":backlight" (Motorola Droid 4) 59