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| author | Cryolitia PukNgae <cryolitia.pukngae@linux.dev> | 2025-10-11 12:51:18 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2025-10-11 13:49:48 +0300 |
| commit | 77908b81766781dfcd086878aefc29f5db8dae6a (patch) | |
| tree | e999e49003697c5cc817c9a2a282039bd8d21075 /include/linux/overflow.h | |
| parent | 30b3211aa24161856134b2c2ea2ab1c6eb534b36 (diff) | |
| download | linux-77908b81766781dfcd086878aefc29f5db8dae6a.tar.xz | |
ALSA: usb-audio: apply quirk for Huawei Technologies Co., Ltd. CM-Q3
There're several different actual hardwares sold by Huawei, using the
same USB ID 12d1:3a07.
The first one we found, having a volume control named "Headset Playback
Volume", reports a min value -15360, and will mute iff setting it to
-15360. It can be simply fixed by quirk flag MIXER_PLAYBACK_MIN_MUTE,
which we have already submitted previously.[1]
The second one we found today, having a volume control named "PCM
Playback Volume", reports its min -11520 and res 256, and will mute
when less than -11008. Because of the already existing quirk flag, we
can just set its min to -11264, and the new minimum value will still
not be available to userspace, so that userspace's minimum will be the
correct -11008.
1. https://lore.kernel.org/all/20250903-sound-v1-3-d4ca777b8512@uniontech.com/
Tested-by: Guoli An <anguoli@uniontech.com>
Signed-off-by: Cryolitia PukNgae <cryolitia.pukngae@linux.dev>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/linux/overflow.h')
0 files changed, 0 insertions, 0 deletions