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ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion 

Fix this from the logs:

usb 7-1: New USB device found, idVendor=046d, idProduct=08ca
...
usb 7-1: Warning! Unlikely big volume range (=3072), cval->res is probably wrong.
usb 7-1: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Wolfram Sang 2015-05-29 19:50:56 +09:00 committed by Takashi Iwai
parent 81a1231bf8
commit 1ef9f05835
1 changed files with 1 additions and 0 deletions
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1
sound/usb/mixer.c
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@ -918,6 +918,7 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
case USB_ID(0x046d, 0x0991): case USB_ID(0x046d, 0x0991):
/* Most audio usb devices lie about volume resolution. /* Most audio usb devices lie about volume resolution.
* Most Logitech webcams have res = 384. * Most Logitech webcams have res = 384.