| From: Federico Cuello <fedux@fedux.com.ar> |
| 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 <fedux@fedux.com.ar> |
| Signed-off-by: Takashi Iwai <tiwai@suse.de> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| sound/usb/mixer.c | 8 ++++++++ |
| 1 file changed, 8 insertions(+) |
| |
| --- a/sound/usb/mixer.c |
| +++ b/sound/usb/mixer.c |
| @@ -885,6 +885,14 @@ static void volume_control_quirks(struct |
| } |
| 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): |
