# SPDX-License-Identifier: GPL-2.0-only
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menuconfig LEDS_TRIGGERS
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bool "LED Trigger support"
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depends on LEDS_CLASS
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help
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This option enables trigger support for the leds class.
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These triggers allow kernel events to drive the LEDs and can
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be configured via sysfs. If unsure, say Y.
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if LEDS_TRIGGERS
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config LEDS_TRIGGER_TIMER
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tristate "LED Timer Trigger"
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help
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This allows LEDs to be controlled by a programmable timer
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via sysfs. Some LED hardware can be programmed to start
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blinking the LED without any further software interaction.
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For more details read Documentation/leds/leds-class.rst.
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If unsure, say Y.
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config LEDS_TRIGGER_ONESHOT
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tristate "LED One-shot Trigger"
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help
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This allows LEDs to blink in one-shot pulses with parameters
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controlled via sysfs. It's useful to notify the user on
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sporadic events, when there are no clear begin and end trap points,
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or on dense events, where this blinks the LED at constant rate if
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rearmed continuously.
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It also shows how to use the led_blink_set_oneshot() function.
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If unsure, say Y.
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config LEDS_TRIGGER_DISK
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bool "LED Disk Trigger"
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depends on IDE_GD_ATA || ATA
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help
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This allows LEDs to be controlled by disk activity.
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If unsure, say Y.
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config LEDS_TRIGGER_MTD
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bool "LED MTD (NAND/NOR) Trigger"
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depends on MTD
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help
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This allows LEDs to be controlled by MTD activity.
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If unsure, say N.
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config LEDS_TRIGGER_HEARTBEAT
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tristate "LED Heartbeat Trigger"
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help
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This allows LEDs to be controlled by a CPU load average.
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The flash frequency is a hyperbolic function of the 1-minute
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load average.
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If unsure, say Y.
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config LEDS_TRIGGER_BACKLIGHT
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tristate "LED backlight Trigger"
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help
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This allows LEDs to be controlled as a backlight device: they
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turn off and on when the display is blanked and unblanked.
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If unsure, say N.
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config LEDS_TRIGGER_CPU
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bool "LED CPU Trigger"
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help
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This allows LEDs to be controlled by active CPUs. This shows
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the active CPUs across an array of LEDs so you can see which
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CPUs are active on the system at any given moment.
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If unsure, say N.
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config LEDS_TRIGGER_ACTIVITY
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tristate "LED activity Trigger"
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help
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This allows LEDs to be controlled by an immediate CPU usage.
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The flash frequency and duty cycle varies from faint flashes to
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intense brightness depending on the instant CPU load.
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If unsure, say N.
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config LEDS_TRIGGER_GPIO
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tristate "LED GPIO Trigger"
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depends on GPIOLIB || COMPILE_TEST
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help
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This allows LEDs to be controlled by gpio events. It's good
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when using gpios as switches and triggering the needed LEDs
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from there. One use case is n810's keypad LEDs that could
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be triggered by this trigger when user slides up to show
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keypad.
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If unsure, say N.
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config LEDS_TRIGGER_DEFAULT_ON
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tristate "LED Default ON Trigger"
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help
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This allows LEDs to be initialised in the ON state.
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If unsure, say Y.
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comment "iptables trigger is under Netfilter config (LED target)"
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depends on LEDS_TRIGGERS
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config LEDS_TRIGGER_TRANSIENT
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tristate "LED Transient Trigger"
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help
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This allows one time activation of a transient state on
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GPIO/PWM based hardware.
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If unsure, say Y.
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config LEDS_TRIGGER_CAMERA
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tristate "LED Camera Flash/Torch Trigger"
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help
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This allows LEDs to be controlled as a camera flash/torch device.
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This enables direct flash/torch on/off by the driver, kernel space.
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If unsure, say Y.
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config LEDS_TRIGGER_PANIC
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bool "LED Panic Trigger"
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help
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This allows LEDs to be configured to blink on a kernel panic.
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Enabling this option will allow to mark certain LEDs as panic indicators,
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allowing to blink them on a kernel panic, even if they are set to
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a different trigger.
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If unsure, say Y.
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config LEDS_TRIGGER_NETDEV
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tristate "LED Netdev Trigger"
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depends on NET
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help
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This allows LEDs to be controlled by network device activity.
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If unsure, say Y.
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config LEDS_TRIGGER_PATTERN
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tristate "LED Pattern Trigger"
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help
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This allows LEDs to be controlled by a software or hardware pattern
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which is a series of tuples, of brightness and duration (ms).
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If unsure, say N
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config LEDS_TRIGGER_AUDIO
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tristate "Audio Mute LED Trigger"
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help
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This allows LEDs to be controlled by audio drivers for following
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the audio mute and mic-mute changes.
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If unsure, say N
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endif # LEDS_TRIGGERS
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