linux-kernel - [PATCH 3.2 108/164] ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion

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Date:	Sun, 02 Aug 2015 01:02:37 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Wolfram Sang" <wsa@...-dreams.de>,
	"Takashi Iwai" <tiwai@...e.de>
Subject: [PATCH 3.2 108/164] ALSA: usb-audio: Add mic volume fix quirk for
 Logitech Quickcam Fusion

3.2.70-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa@...-dreams.de>

commit 1ef9f0583514508bc93427106ceef3215e4eb1a5 upstream.

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@...-dreams.de>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/usb/mixer.c | 1 +
 1 file changed, 1 insertion(+)

--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -839,6 +839,7 @@ static void volume_control_quirks(struct
 	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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