| # SPDX-License-Identifier: GPL-2.0-only |
| menuconfig LEDS_TRIGGERS |
| bool "LED Trigger support" |
| depends on LEDS_CLASS |
| 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. |
| |
| if LEDS_TRIGGERS |
| |
| config LEDS_TRIGGER_TIMER |
| tristate "LED Timer Trigger" |
| help |
| This allows LEDs to be controlled by a programmable timer |
| via sysfs. Some LED hardware can be programmed to start |
| blinking the LED without any further software interaction. |
| For more details read Documentation/leds/leds-class.rst. |
| |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_ONESHOT |
| tristate "LED One-shot Trigger" |
| help |
| This allows LEDs to blink in one-shot pulses with parameters |
| controlled via sysfs. It's useful to notify the user on |
| sporadic events, when there are no clear begin and end trap points, |
| or on dense events, where this blinks the LED at constant rate if |
| rearmed continuously. |
| |
| It also shows how to use the led_blink_set_oneshot() function. |
| |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_DISK |
| bool "LED Disk Trigger" |
| depends on ATA |
| help |
| This allows LEDs to be controlled by disk activity. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_MTD |
| bool "LED MTD (NAND/NOR) Trigger" |
| depends on MTD |
| help |
| This allows LEDs to be controlled by MTD activity. |
| If unsure, say N. |
| |
| config LEDS_TRIGGER_HEARTBEAT |
| tristate "LED Heartbeat Trigger" |
| help |
| This allows LEDs to be controlled by a CPU load average. |
| The flash frequency is a hyperbolic function of the 1-minute |
| load average. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_BACKLIGHT |
| tristate "LED backlight Trigger" |
| help |
| This allows LEDs to be controlled as a backlight device: they |
| turn off and on when the display is blanked and unblanked. |
| |
| If unsure, say N. |
| |
| config LEDS_TRIGGER_CPU |
| bool "LED CPU Trigger" |
| depends on !PREEMPT_RT |
| help |
| This allows LEDs to be controlled by active CPUs. This shows |
| the active CPUs across an array of LEDs so you can see which |
| CPUs are active on the system at any given moment. |
| |
| If unsure, say N. |
| |
| config LEDS_TRIGGER_ACTIVITY |
| tristate "LED activity Trigger" |
| help |
| This allows LEDs to be controlled by an immediate CPU usage. |
| The flash frequency and duty cycle varies from faint flashes to |
| intense brightness depending on the instant CPU load. |
| If unsure, say N. |
| |
| config LEDS_TRIGGER_GPIO |
| tristate "LED GPIO Trigger" |
| depends on GPIOLIB || COMPILE_TEST |
| help |
| This allows LEDs to be controlled by gpio events. It's good |
| when using gpios as switches and triggering the needed LEDs |
| from there. Triggers are defined as device properties. |
| |
| If unsure, say N. |
| |
| config LEDS_TRIGGER_DEFAULT_ON |
| tristate "LED Default ON Trigger" |
| help |
| This allows LEDs to be initialised in the ON state. |
| If unsure, say Y. |
| |
| comment "iptables trigger is under Netfilter config (LED target)" |
| depends on LEDS_TRIGGERS |
| |
| config LEDS_TRIGGER_TRANSIENT |
| tristate "LED Transient Trigger" |
| help |
| This allows one time activation of a transient state on |
| GPIO/PWM based hardware. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_CAMERA |
| tristate "LED Camera Flash/Torch Trigger" |
| help |
| This allows LEDs to be controlled as a camera flash/torch device. |
| This enables direct flash/torch on/off by the driver, kernel space. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_PANIC |
| bool "LED Panic Trigger" |
| help |
| This allows LEDs to be configured to blink on a kernel panic. |
| Enabling this option will allow to mark certain LEDs as panic indicators, |
| allowing to blink them on a kernel panic, even if they are set to |
| a different trigger. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_NETDEV |
| tristate "LED Netdev Trigger" |
| depends on NET |
| help |
| This allows LEDs to be controlled by network device activity. |
| If unsure, say Y. |
| |
| config LEDS_TRIGGER_PATTERN |
| tristate "LED Pattern Trigger" |
| help |
| This allows LEDs to be controlled by a software or hardware pattern |
| which is a series of tuples, of brightness and duration (ms). |
| If unsure, say N |
| |
| config LEDS_TRIGGER_TTY |
| tristate "LED Trigger for TTY devices" |
| depends on TTY |
| help |
| This allows LEDs to be controlled by activity on ttys which includes |
| serial devices like /dev/ttyS0. |
| |
| When build as a module this driver will be called ledtrig-tty. |
| |
| config LEDS_TRIGGER_INPUT_EVENTS |
| tristate "LED Input events trigger" |
| depends on INPUT |
| help |
| Turn LEDs on when there is input (/dev/input/event*) activity and turn |
| them back off again after there has been no activity for 5 seconds. |
| |
| This is primarily intended to control LEDs which are a backlight for |
| capacitive touch-buttons, such as e.g. the menu / home / back buttons |
| found on the bottom bezel of many older smartphones and tablets. |
| |
| This can also be used to turn on the keyboard backlight LED on |
| input events and turn the keyboard backlight off again when idle. |
| |
| When build as a module this driver will be called ledtrig-input-events. |
| |
| endif # LEDS_TRIGGERS |
