linux/drivers/leds/Kconfig

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menu "LED devices"
config NEW_LEDS
bool "LED Support"
help
Say Y to enable Linux LED support. This is not related to standard
keyboard LEDs which are controlled via the input system.
config LEDS_CLASS
tristate "LED Class Support"
depends NEW_LEDS
help
This option enables the led sysfs class in /sys/class/leds. You'll
need this to do anything useful with LEDs. If unsure, say N.
config LEDS_TRIGGERS
bool "LED Trigger support"
depends NEW_LEDS
help
This option enables trigger support for the leds class.
These triggers allow kernel events to drive the LEDs and can
be configured via sysfs. If unsure, say Y.
config LEDS_TRIGGER_TIMER
tristate "LED Timer Trigger"
depends LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
via sysfs. If unsure, say Y.
endmenu