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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>
18 lines
960 B
Makefile
18 lines
960 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.o
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obj-$(CONFIG_LEDS_TRIGGER_DISK) += ledtrig-disk.o
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obj-$(CONFIG_LEDS_TRIGGER_MTD) += ledtrig-mtd.o
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obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
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obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
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obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o
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obj-$(CONFIG_LEDS_TRIGGER_CPU) += ledtrig-cpu.o
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obj-$(CONFIG_LEDS_TRIGGER_ACTIVITY) += ledtrig-activity.o
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obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
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obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
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obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
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obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
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obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
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obj-$(CONFIG_LEDS_TRIGGER_PATTERN) += ledtrig-pattern.o
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obj-$(CONFIG_LEDS_TRIGGER_AUDIO) += ledtrig-audio.o
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obj-$(CONFIG_LEDS_TRIGGER_TTY) += ledtrig-tty.o
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