kernel/Documentation/ABI/testing/sysfs-class-led-trigger-tty, branch linux-6.2.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.2.y2021-01-15T09:22:26Zleds: trigger: implement a tty trigger2021-01-15T09:22:26ZUwe Kleine-Königu.kleine-koenig@pengutronix.de2021-01-13T17:30:18Zurn:sha1:fd4a641ac88fbbaf8b90e00823397597a287cfcd
Usage is as follows:
myled=ledname
tty=ttyS0
echo tty > /sys/class/leds/$myled/trigger
echo $tty > /sys/class/leds/$myled/ttyname
. When this new trigger is active it periodically checks the tty's
statistics and when it changed since the last check the led is flashed
once.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210113173018.bq2fkea2o3yp6rf6@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>