Documentation/leds/leds-class.rst

8 of the LED (taking a value 0-max_brightness). Most LEDs don't have hardware
9 brightness support so will just be turned on for non-zero brightness settings.
14 existing subsystems with minimal additional code. Examples are the disk-activity,
15 nand-disk and sharpsl-charge triggers. With led triggers disabled, the code
48 - devicename:
51         than to the hardware; the information related to the product and the bus
57 - color:
59         include/dt-bindings/leds/common.h.
61 - function:
63         include/dt-bindings/leds/common.h.
66 to linux-leds@vger.kernel.org.
71 name with required "-N" suffix in the driver. fwnode based drivers can use
72 function-enumerator property for that and then the concatenation will be handled
76 when LED class device is created by a driver of hot-pluggable device and
88   - "red:disk"
89   - "white:flash"
90   - "red:indicator"
91   - "phy1:green:wlan"
92   - "phy3::wlan"
93   - ":kbd_backlight"
94   - "input5::kbd_backlight"
95   - "input3::numlock"
96   - "input3::scrolllock"
97   - "input3::capslock"
98   - "mmc1::status"
99   - "white:status"
107         - input devices
108         - ieee80211 compliant USB devices
124     - led_set_brightness:
128     - led_set_brightness_sync:
129 		for use cases when immediate effect is desired -
131 		device registers and can sleep, passing LED_OFF stops hardware
132 		blinking, returns -EBUSY if software blink fallback is enabled.
142 free-ing the led_classdev struct.
144 If the driver can detect hardware initiated brightness changes and thus
150 Hardware accelerated blink of LEDs
170 hardware blinking function, if any.
172 Hardware driven LEDs
175 Some LEDs can be programmed to be driven by hardware. This is not
180 With hw control we refer to the LED driven by hardware.
184     - hw_control_trigger:
189     - hw_control_is_supported:
196                 If the passed flags mask is not supported -EOPNOTSUPP
203      - hw_control_set:
206                 a set of mode and setup the LED to be driven by hardware
214     - hw_control_get:
225     - hw_control_get_device: