Messages in this thread | | | From | Ezequiel Garcia <> | Subject | [PATCH 0/5] Extend the LED panic trigger | Date | Mon, 4 Apr 2016 17:22:01 -0300 |
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As per commit 916fe61995 ("leds: trigger: Introduce a kernel panic LED trigger"), the kernel now supports a new LED trigger to hook on the panic blink.
However, the only way of using this is to dedicate a LED device to this function.
To overcome this limitation, the present series introduces the capability to switch the LED trigger of certain LED devices upon a kernel panic (using the panic notifier).
The decision of which LEDs should be switched to the panic trigger is left to each LED device driver. As an example, a devicetree boolean property is introduced and used in the leds-gpio driver.
Feedback and other ideas on how to implement this are most welcomed.
Ezequiel Garcia (5): leds: triggers: Allow to switch the trigger to "panic" on a kernel panic leds: triggers: Add a led_trigger_event_nosleep API leds: trigger: panic: Use led_trigger_event_nosleep devicetree: leds: Introduce "panic-blink" optional property leds: gpio: Support the panic-blink firmware property
Documentation/devicetree/bindings/leds/common.txt | 2 + drivers/leds/led-triggers.c | 78 +++++++++++++++++++++-- drivers/leds/leds-gpio.c | 4 ++ drivers/leds/trigger/ledtrig-panic.c | 2 +- include/linux/leds.h | 6 ++ 5 files changed, 87 insertions(+), 5 deletions(-)
-- 2.7.0
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