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