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| 1 | What: /sys/class/leds/<led>/flash_brightness | ||
| 2 | Date: March 2015 | ||
| 3 | KernelVersion: 4.0 | ||
| 4 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 5 | Description: read/write | ||
| 6 | Set the brightness of this LED in the flash strobe mode, in | ||
| 7 | microamperes. The file is created only for the flash LED devices | ||
| 8 | that support setting flash brightness. | ||
| 9 | |||
| 10 | The value is between 0 and | ||
| 11 | /sys/class/leds/<led>/max_flash_brightness. | ||
| 12 | |||
| 13 | What: /sys/class/leds/<led>/max_flash_brightness | ||
| 14 | Date: March 2015 | ||
| 15 | KernelVersion: 4.0 | ||
| 16 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 17 | Description: read only | ||
| 18 | Maximum brightness level for this LED in the flash strobe mode, | ||
| 19 | in microamperes. | ||
| 20 | |||
| 21 | What: /sys/class/leds/<led>/flash_timeout | ||
| 22 | Date: March 2015 | ||
| 23 | KernelVersion: 4.0 | ||
| 24 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 25 | Description: read/write | ||
| 26 | Hardware timeout for flash, in microseconds. The flash strobe | ||
| 27 | is stopped after this period of time has passed from the start | ||
| 28 | of the strobe. The file is created only for the flash LED | ||
| 29 | devices that support setting flash timeout. | ||
| 30 | |||
| 31 | What: /sys/class/leds/<led>/max_flash_timeout | ||
| 32 | Date: March 2015 | ||
| 33 | KernelVersion: 4.0 | ||
| 34 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 35 | Description: read only | ||
| 36 | Maximum flash timeout for this LED, in microseconds. | ||
| 37 | |||
| 38 | What: /sys/class/leds/<led>/flash_strobe | ||
| 39 | Date: March 2015 | ||
| 40 | KernelVersion: 4.0 | ||
| 41 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 42 | Description: read/write | ||
| 43 | Flash strobe state. When written with 1 it triggers flash strobe | ||
| 44 | and when written with 0 it turns the flash off. | ||
| 45 | |||
| 46 | On read 1 means that flash is currently strobing and 0 means | ||
| 47 | that flash is off. | ||
| 48 | |||
| 49 | What: /sys/class/leds/<led>/flash_fault | ||
| 50 | Date: March 2015 | ||
| 51 | KernelVersion: 4.0 | ||
| 52 | Contact: Jacek Anaszewski <j.anaszewski@samsung.com> | ||
| 53 | Description: read only | ||
| 54 | Space separated list of flash faults that may have occurred. | ||
| 55 | Flash faults are re-read after strobing the flash. Possible | ||
| 56 | flash faults: | ||
| 57 | |||
| 58 | * led-over-voltage - flash controller voltage to the flash LED | ||
| 59 | has exceeded the limit specific to the flash controller | ||
| 60 | * flash-timeout-exceeded - the flash strobe was still on when | ||
| 61 | the timeout set by the user has expired; not all flash | ||
| 62 | controllers may set this in all such conditions | ||
| 63 | * controller-over-temperature - the flash controller has | ||
| 64 | overheated | ||
| 65 | * controller-short-circuit - the short circuit protection | ||
| 66 | of the flash controller has been triggered | ||
| 67 | * led-power-supply-over-current - current in the LED power | ||
| 68 | supply has exceeded the limit specific to the flash | ||
| 69 | controller | ||
| 70 | * indicator-led-fault - the flash controller has detected | ||
| 71 | a short or open circuit condition on the indicator LED | ||
| 72 | * led-under-voltage - flash controller voltage to the flash | ||
| 73 | LED has been below the minimum limit specific to | ||
| 74 | the flash | ||
| 75 | * controller-under-voltage - the input voltage of the flash | ||
| 76 | controller is below the limit under which strobing the | ||
| 77 | flash at full current will not be possible; | ||
| 78 | the condition persists until this flag is no longer set | ||
| 79 | * led-over-temperature - the temperature of the LED has exceeded | ||
| 80 | its allowed upper limit | ||