[PATCH 8/9] ALSA: usb-audio: Add linear volume quirk for Hotone Audio Pulze Mini

Rong Zhang
2026-03-01T21:38:17Z

Hotone Audio Pulze Mini is a modeling amplifier with UAC interface. Its
Playback and Capture mixers use linear volume with val = 0/100/1.

Add a quirk table entry matching VID/PID=0x84ef/0x0082 and applying
linear volume quirk flags, so that it can work properly.

Quirky device sample:

usb 7-1: New USB device found, idVendor=84ef, idProduct=0082, bcdDevice= 1.03
usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 7-1: Product: Pulze Mini
usb 7-1: Manufacturer: Hotone Audio
usb 7-1: SerialNumber: 20240807

Signed-off-by: Rong Zhang <i@rong.moe>
---
sound/usb/quirks.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2327288e2b20f..ec809b7eb5bea 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2438,6 +2438,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_ALIGN_TRANSFER),
DEVICE_FLG(0x534d, 0x2109, /* MacroSilicon MS2109 */
QUIRK_FLAG_ALIGN_TRANSFER),
+ DEVICE_FLG(0x84ef, 0x0082, /* Hotone Audio Pulze Mini */
+ QUIRK_FLAG_MIXER_PLAYBACK_LINEAR_VOL | QUIRK_FLAG_MIXER_CAPTURE_LINEAR_VOL),

/* Vendor and string descriptor matches */
VENDOR_STRING_FLG(0x1235, /* VID conflict with Focusrite Novation */
--
2.51.0