This patch adds generic inverted LED triggers. With this patch applied any trigger can be used with inverted brightness levels by appending "-inverted" to the name of a trigger. This is can be useful for devices that do not have dedicated LEDs for e.g. disk activity indication. With this patch applied the power led can be set to default-state = on and trigger = disk-activity-inverted. Then the led will be on by default, indicating the power state of the device but it will turn off briefly whenever there is disk activity. I think dual-use of LEDs might come in handy for quite a few devices since a lot of embedded boards and upcoming ARM based notebooks do only have one or two LEDs. Best regards, Tobias Tobias Schramm (1): leds: add generic inverted led trigger support drivers/leds/led-triggers.c | 148 +++++++++++++++++++++++++++--------- include/linux/leds.h | 1 + 2 files changed, 111 insertions(+), 38 deletions(-) -- 2.24.1
