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HID: input: map battery system charging

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HID descriptors with Battery System (0x85) Charging (0x44) usage are
ignored and POWER_SUPPLY_STATUS_DISCHARGING is always reported to user
space, even when the device is charging.

Map this usage and when it is reported set the right charging status.

In addition, add KUnit tests to make sure that the charging status is
correctly set and reported. They can be run with the usual command:

    $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/hid

Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
José Expósito 2022-11-24 18:59:37 +01:00 • committed by Jiri Kosina
commit a608dc1c06
5 changed files with 118 additions and 2 deletions
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