Commit 1ef9f058 authored May 29, 2015 by Wolfram Sang Committed by Takashi Iwai May 29, 2015

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>

parent 81a1231b

sound/usb/mixer.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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, 0x0825): /* HD Webcam c270 */
		case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
		case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
		case USB_ID(0x046d, 0x0991):
		/* Most audio usb devices lie about volume resolution.
		* Most Logitech webcams have res = 384.

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