What: /sys/class/leds//flash_brightness Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read/write Set the brightness of this LED in the flash strobe mode, in microamperes. The file is created only for the flash LED devices that support setting flash brightness. The value is between 0 and /sys/class/leds//max_flash_brightness. What: /sys/class/leds//max_flash_brightness Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read only Maximum brightness level for this LED in the flash strobe mode, in microamperes. What: /sys/class/leds//flash_timeout Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read/write Hardware timeout for flash, in microseconds. The flash strobe is stopped after this period of time has passed from the start of the strobe. The file is created only for the flash LED devices that support setting flash timeout. What: /sys/class/leds//max_flash_timeout Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read only Maximum flash timeout for this LED, in microseconds. What: /sys/class/leds//flash_strobe Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read/write Flash strobe state. When written with 1 it triggers flash strobe and when written with 0 it turns the flash off. On read 1 means that flash is currently strobing and 0 means that flash is off. What: /sys/class/leds//flash_fault Date: March 2015 KernelVersion: 4.0 Contact: Jacek Anaszewski Description: read only Space separated list of flash faults that may have occurred. Flash faults are re-read after strobing the flash. Possible flash faults: * led-over-voltage flash controller voltage to the flash LED has exceeded the limit specific to the flash controller * flash-timeout-exceeded the flash strobe was still on when the timeout set by the user has expired; not all flash controllers may set this in all such conditions * controller-over-temperature the flash controller has overheated * controller-short-circuit the short circuit protection of the flash controller has been triggered * led-power-supply-over-current current in the LED power supply has exceeded the limit specific to the flash controller * indicator-led-fault the flash controller has detected a short or open circuit condition on the indicator LED * led-under-voltage flash controller voltage to the flash LED has been below the minimum limit specific to the flash * controller-under-voltage the input voltage of the flash controller is below the limit under which strobing the flash at full current will not be possible; the condition persists until this flag is no longer set * led-over-temperature the temperature of the LED has exceeded its allowed upper limit