[PATCH] sound/usb: Provide quirk for Sennheiser GSP670 Headset

[Brendan Grieve]

As per discussion at: https://github.com/szszoke/sennheiser-gsp670-pulseaudio-profile/issues/13

The GSP670 has 2 playback and 1 recording device that by default are
detected in an incompatible order for alsa. This may have been done to make
it compatible for the console by the manufacturer and only affects the
latest firmware which uses its own ID.

This quirk will resolve this by reordering the channels.

Signed-off-by: Brendan Grieve <brendan at grieve.com.au>
---
 sound/usb/quirks-table.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index de18fff69280..2af8c68fac27 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -4012,6 +4012,38 @@ YAMAHA_DEVICE(0x7010, "UB99"),
 		}
 	}
 },
+{
+	/*
+	 * Sennheiser GSP670
+	 * Change order of interfaces loaded
+	 */
+	USB_DEVICE(0x1395, 0x0300),
+	.bInterfaceClass = USB_CLASS_PER_INTERFACE,
+	.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_COMPOSITE,
+		.data = &(const struct snd_usb_audio_quirk[]) {
+			// Communication
+			{
+				.ifnum = 3,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			// Recording
+			{
+				.ifnum = 4,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			// Main
+			{
+				.ifnum = 1,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			{
+				.ifnum = -1
+			}
+		}
+	}
+},
 
 #undef USB_DEVICE_VENDOR_SPEC
 #undef USB_AUDIO_DEVICE
-- 
2.25.1