1menuconfig LEDS_TRIGGERS 2 bool "LED Trigger support" 3 depends on LEDS_CLASS 4 help 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. 8 9if LEDS_TRIGGERS 10 11config LEDS_TRIGGER_TIMER 12 tristate "LED Timer Trigger" 13 help 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. 18 19 If unsure, say Y. 20 21config LEDS_TRIGGER_ONESHOT 22 tristate "LED One-shot Trigger" 23 help 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 28 rearmed continuously. 29 30 It also shows how to use the led_blink_set_oneshot() function. 31 32 If unsure, say Y. 33 34config LEDS_TRIGGER_DISK 35 bool "LED Disk Trigger" 36 depends on IDE_GD_ATA || ATA 37 help 38 This allows LEDs to be controlled by disk activity. 39 If unsure, say Y. 40 41config LEDS_TRIGGER_MTD 42 bool "LED MTD (NAND/NOR) Trigger" 43 depends on MTD 44 help 45 This allows LEDs to be controlled by MTD activity. 46 If unsure, say N. 47 48config LEDS_TRIGGER_HEARTBEAT 49 tristate "LED Heartbeat Trigger" 50 help 51 This allows LEDs to be controlled by a CPU load average. 52 The flash frequency is a hyperbolic function of the 1-minute 53 load average. 54 If unsure, say Y. 55 56config LEDS_TRIGGER_BACKLIGHT 57 tristate "LED backlight Trigger" 58 help 59 This allows LEDs to be controlled as a backlight device: they 60 turn off and on when the display is blanked and unblanked. 61 62 If unsure, say N. 63 64config LEDS_TRIGGER_CPU 65 bool "LED CPU Trigger" 66 help 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. 70 71 If unsure, say N. 72 73config LEDS_TRIGGER_ACTIVITY 74 tristate "LED activity Trigger" 75 help 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. 79 If unsure, say N. 80 81config LEDS_TRIGGER_GPIO 82 tristate "LED GPIO Trigger" 83 depends on GPIOLIB || COMPILE_TEST 84 help 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 89 keypad. 90 91 If unsure, say N. 92 93config LEDS_TRIGGER_DEFAULT_ON 94 tristate "LED Default ON Trigger" 95 help 96 This allows LEDs to be initialised in the ON state. 97 If unsure, say Y. 98 99comment "iptables trigger is under Netfilter config (LED target)" 100 depends on LEDS_TRIGGERS 101 102config LEDS_TRIGGER_TRANSIENT 103 tristate "LED Transient Trigger" 104 help 105 This allows one time activation of a transient state on 106 GPIO/PWM based hardware. 107 If unsure, say Y. 108 109config LEDS_TRIGGER_CAMERA 110 tristate "LED Camera Flash/Torch Trigger" 111 help 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. 114 If unsure, say Y. 115 116config LEDS_TRIGGER_PANIC 117 bool "LED Panic Trigger" 118 help 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 122 a different trigger. 123 If unsure, say Y. 124 125config LEDS_TRIGGER_NETDEV 126 tristate "LED Netdev Trigger" 127 depends on NET 128 help 129 This allows LEDs to be controlled by network device activity. 130 If unsure, say Y. 131 132config LEDS_TRIGGER_PATTERN 133 tristate "LED Pattern Trigger" 134 help 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). 137 If unsure, say N 138 139config LEDS_TRIGGER_AUDIO 140 tristate "Audio Mute LED Trigger" 141 help 142 This allows LEDs to be controlled by audio drivers for following 143 the audio mute and mic-mute changes. 144 If unsure, say N 145 146endif # LEDS_TRIGGERS 147