1 .. SPDX-License-Identifier: GPL-2.0
2
3 ==============================================
4 Kernel driver for Intel Cherry Trail Whiskey C
5 ==============================================
6
7 /sys/class/leds/<led>/hw_pattern
8 --------------------------------
9
10 Specify a hardware pattern for the Whiskey Cov
11
12 The only supported pattern is hardware breathi
13
14 "0 2000 1 2000"
15
16 ^
17 |
18 Max-| ---
19 | / \
20 | / \
21 | / \ /
22 | / \ /
23 Min-|- ---
24 |
25 0------2------4--> time (sec)
26
27 The rise and fall times must be the same value
28 Supported values are 2000, 1000, 500 and 250 f
29 breathing frequencies of 1/4, 1/2, 1 and 2 Hz.
30
31 The set pattern only controls the timing. For
32 set brightness is used and the max brightness
33 while breathing by writing the brightness attr
34
35 This is just like how blinking works in the LE
36 for both sw and hw blinking the brightness can
37 while blinking. Breathing on this hw really is
38 mode of blinking.
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