From 2444bdbebcf9fc71b9177965c8117523f91b5170 Mon Sep 17 00:00:00 2001 From: Federico Cuello Date: Wed, 9 May 2018 00:13:38 +0200 Subject: ALSA: usb: mixer: volume quirk for CM102-A+/102S+ commit 21493316a3c4598f308d5a9fa31cc74639c4caff upstream. Currently it's not possible to set volume lower than 26% (it just mutes). Also fixes this warning: Warning! Unlikely big volume range (=9472), cval->res is probably wrong. [13] FU [PCM Playback Volume] ch = 2, val = -9473/-1/1 , and volume works fine for full range. Signed-off-by: Federico Cuello Cc: Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/mixer.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'sound') diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index c5447ff078b3..97d6a18e6956 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -904,6 +904,14 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval, } break; + case USB_ID(0x0d8c, 0x0103): + if (!strcmp(kctl->id.name, "PCM Playback Volume")) { + usb_audio_info(chip, + "set volume quirk for CM102-A+/102S+\n"); + cval->min = -256; + } + break; + case USB_ID(0x0471, 0x0101): case USB_ID(0x0471, 0x0104): case USB_ID(0x0471, 0x0105): -- cgit v1.2.3