0001 What: /sys/class/leds/<led>/pattern
0002 Date: September 2018
0003 KernelVersion: 4.20
0004 Description:
0005 Specify a software pattern for the LED, that supports altering
0006 the brightness for the specified duration with one software
0007 timer. It can do gradual dimming and step change of brightness.
0008
0009 The pattern is given by a series of tuples, of brightness and
0010 duration (ms).
0011
0012 The exact format is described in:
0013 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
0014
0015 What: /sys/class/leds/<led>/hw_pattern
0016 Date: September 2018
0017 KernelVersion: 4.20
0018 Description:
0019 Specify a hardware pattern for the LED, for LED hardware that
0020 supports autonomously controlling brightness over time, according
0021 to some preprogrammed hardware patterns. It deactivates any active
0022 software pattern.
0023
0024 Since different LED hardware can have different semantics of
0025 hardware patterns, each driver is expected to provide its own
0026 description for the hardware patterns in their documentation
0027 file at Documentation/leds/.
0028
0029 What: /sys/class/leds/<led>/repeat
0030 Date: September 2018
0031 KernelVersion: 4.20
0032 Description:
0033 Specify a pattern repeat number. -1 means repeat indefinitely,
0034 other negative numbers and number 0 are invalid.
0035
0036 This file will always return the originally written repeat
0037 number.
0038
0039 It should be noticed that some leds, like EL15203000 may
0040 only support indefinitely patterns, so they always store -1.
