1 menuconfig LEDS_TRIGGERS
2 bool "LED Trigger support"
5 This option enables trigger support for the leds class.
6 These triggers allow kernel events to drive the LEDs and can
7 be configured via sysfs. If unsure, say Y.
11 config LEDS_TRIGGER_TIMER
12 tristate "LED Timer Trigger"
14 This allows LEDs to be controlled by a programmable timer
15 via sysfs. Some LED hardware can be programmed to start
16 blinking the LED without any further software interaction.
17 For more details read Documentation/leds/leds-class.txt.
21 config LEDS_TRIGGER_ONESHOT
22 tristate "LED One-shot Trigger"
24 This allows LEDs to blink in one-shot pulses with parameters
25 controlled via sysfs. It's useful to notify the user on
26 sporadic events, when there are no clear begin and end trap points,
27 or on dense events, where this blinks the LED at constant rate if
30 It also shows how to use the led_blink_set_oneshot() function.
34 config LEDS_TRIGGER_DISK
35 bool "LED Disk Trigger"
36 depends on IDE_GD_ATA || ATA
38 This allows LEDs to be controlled by disk activity.
41 config LEDS_TRIGGER_MTD
42 bool "LED MTD (NAND/NOR) Trigger"
45 This allows LEDs to be controlled by MTD activity.
48 config LEDS_TRIGGER_HEARTBEAT
49 tristate "LED Heartbeat Trigger"
51 This allows LEDs to be controlled by a CPU load average.
52 The flash frequency is a hyperbolic function of the 1-minute
56 config LEDS_TRIGGER_BACKLIGHT
57 tristate "LED backlight Trigger"
59 This allows LEDs to be controlled as a backlight device: they
60 turn off and on when the display is blanked and unblanked.
64 config LEDS_TRIGGER_CPU
65 bool "LED CPU Trigger"
67 This allows LEDs to be controlled by active CPUs. This shows
68 the active CPUs across an array of LEDs so you can see which
69 CPUs are active on the system at any given moment.
73 config LEDS_TRIGGER_ACTIVITY
74 tristate "LED activity Trigger"
76 This allows LEDs to be controlled by an immediate CPU usage.
77 The flash frequency and duty cycle varies from faint flashes to
78 intense brightness depending on the instant CPU load.
81 config LEDS_TRIGGER_GPIO
82 tristate "LED GPIO Trigger"
83 depends on GPIOLIB || COMPILE_TEST
85 This allows LEDs to be controlled by gpio events. It's good
86 when using gpios as switches and triggering the needed LEDs
87 from there. One use case is n810's keypad LEDs that could
88 be triggered by this trigger when user slides up to show
93 config LEDS_TRIGGER_DEFAULT_ON
94 tristate "LED Default ON Trigger"
96 This allows LEDs to be initialised in the ON state.
99 comment "iptables trigger is under Netfilter config (LED target)"
100 depends on LEDS_TRIGGERS
102 config LEDS_TRIGGER_TRANSIENT
103 tristate "LED Transient Trigger"
105 This allows one time activation of a transient state on
106 GPIO/PWM based hardware.
109 config LEDS_TRIGGER_CAMERA
110 tristate "LED Camera Flash/Torch Trigger"
112 This allows LEDs to be controlled as a camera flash/torch device.
113 This enables direct flash/torch on/off by the driver, kernel space.
116 config LEDS_TRIGGER_PANIC
117 bool "LED Panic Trigger"
119 This allows LEDs to be configured to blink on a kernel panic.
120 Enabling this option will allow to mark certain LEDs as panic indicators,
121 allowing to blink them on a kernel panic, even if they are set to
125 config LEDS_TRIGGER_NETDEV
126 tristate "LED Netdev Trigger"
129 This allows LEDs to be controlled by network device activity.
132 config LEDS_TRIGGER_PATTERN
133 tristate "LED Pattern Trigger"
135 This allows LEDs to be controlled by a software or hardware pattern
136 which is a series of tuples, of brightness and duration (ms).
139 endif # LEDS_TRIGGERS