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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-10-30 08:40:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-30 13:15:03 +0100 |
| commit | 26a07553041eb728678348a2bb0cd703ccd11083 (patch) | |
| tree | 00287a341a833bfaeda8aac2941746f0f61cddc3 /Documentation/leds/leds-sc27xx.rst | |
| parent | bd6e8441c2fc4d653d115516f55b1700284bc42d (diff) | |
| download | linux-26a07553041eb728678348a2bb0cd703ccd11083.tar.gz linux-26a07553041eb728678348a2bb0cd703ccd11083.tar.bz2 linux-26a07553041eb728678348a2bb0cd703ccd11083.zip | |
docs: ABI: sysfs-class-led-trigger-pattern: remove hw_pattern duplication
The ABI files are supposed to be unique. Yet,
in the specific case of hw_pattern, there are some duplicated
entries as warned by scripts/get_abi.pl:
Warning: /sys/class/leds/<led>/hw_pattern is defined 3 times: Documentation/ABI/testing/sysfs-class-led-trigger-pattern:14 Documentation/ABI/testing/sysfs-class-led-driver-sc27xx:0 Documentation/ABI/testing/sysfs-class-led-driver-el15203000:0
Drop the duplication from the ABI files, moving the specific
definitions to files inside Documentation/leds.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/038e57881550550b298e598f8f9b7f20515cbe15.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/leds/leds-sc27xx.rst')
| -rw-r--r-- | Documentation/leds/leds-sc27xx.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/leds/leds-sc27xx.rst b/Documentation/leds/leds-sc27xx.rst new file mode 100644 index 000000000000..6bdf6ba3c9fd --- /dev/null +++ b/Documentation/leds/leds-sc27xx.rst @@ -0,0 +1,27 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=================================== +Kernel driver for Spreadtrum SC27XX +=================================== + +/sys/class/leds/<led>/hw_pattern +-------------------------------- + +Specify a hardware pattern for the SC27XX LED. For the SC27XX +LED controller, it only supports 4 stages to make a single +hardware pattern, which is used to configure the rise time, +high time, fall time and low time for the breathing mode. + +For the breathing mode, the SC27XX LED only expects one brightness +for the high stage. To be compatible with the hardware pattern +format, we should set brightness as 0 for rise stage, fall +stage and low stage. + +- Min stage duration: 125 ms +- Max stage duration: 31875 ms + +Since the stage duration step is 125 ms, the duration should be +a multiplier of 125, like 125ms, 250ms, 375ms, 500ms ... 31875ms. + +Thus the format of the hardware pattern values should be: +"0 rise_duration brightness high_duration 0 fall_duration 0 low_duration". |