ALSA: usb-audio - Quirk for Serato phono

Ignore errors (wrong usb interface data) found when using the serato
scratch live box with alsa

Thus the alsa controls can be accessed (beware: they don't work though -
but at least it's one ugly error message less)

Signed-off-by: Andreas Bergmeier <lcid-fire@gmx.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/usbmixer_maps.c b/sound/usb/usbmixer_maps.c
index f41214f..3e5d66c 100644 (file)
--- a/sound/usb/usbmixer_maps.c
+++ b/sound/usb/usbmixer_maps.c
@@ -261,6 +261,22 @@ static struct usbmix_name_map aureon_51_2_map[] = {
        {} /* terminator */
 };
 
+static struct usbmix_name_map scratch_live_map[] = {
+       /* 1: IT Line 1 (USB streaming) */
+       /* 2: OT Line 1 (Speaker) */
+       /* 3: IT Line 1 (Line connector) */
+       { 4, "Line 1 In" }, /* FU */
+       /* 5: OT Line 1 (USB streaming) */
+       /* 6: IT Line 2 (USB streaming) */
+       /* 7: OT Line 2 (Speaker) */
+       /* 8: IT Line 2 (Line connector) */
+       { 9, "Line 2 In" }, /* FU */
+       /* 10: OT Line 2 (USB streaming) */
+       /* 11: IT Mic (Line connector) */
+       /* 12: OT Mic (USB streaming) */
+       { 0 } /* terminator */
+};
+
 /*
  * Control map entries
  */
@@ -316,6 +332,11 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
                .id = USB_ID(0x0ccd, 0x0028),
                .map = aureon_51_2_map,
        },
+       {
+               .id = USB_ID(0x13e5, 0x0001),
+               .map = scratch_live_map,
+               .ignore_ctl_error = 1,
+       },
        { 0 } /* terminator */
 };