Messages in this thread | | | From | Tobias Schramm <> | Subject | [RFC PATCH 0/1] Add generic inverted led triggers | Date | Sun, 8 Mar 2020 15:27:21 +0100 |
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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
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