ALSA: usb-audio: add quirk flag to enable native DSD for McIntosh devices

commit 99248c8902f505ec064cf2b0f74629016f2f4c82 upstream.

McIntosh devices supporting native DSD require the feature to be
explicitly exposed. Add a flag that fixes an issue where DSD audio was
defaulting to DSD over PCM instead of delivering raw DSD data.

Signed-off-by: Max McCarthy <mmccarthy@mcintoshlabs.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/BL0PR13MB4433226005162D186A8DFF4AD6DFA@BL0PR13MB4433.namprd13.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 4e64842245e1900f160ef0687ed1e8d7da3dcaac..ab2b938502ebed7950f89c7e9c716b7e144df27d 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2220,6 +2220,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
                   QUIRK_FLAG_DSD_RAW),
        VENDOR_FLG(0x2ab6, /* T+A devices */
                   QUIRK_FLAG_DSD_RAW),
+       VENDOR_FLG(0x2afd, /* McIntosh Laboratory, Inc. */
+                  QUIRK_FLAG_DSD_RAW),
        VENDOR_FLG(0x2d87, /* Cayin device */
                   QUIRK_FLAG_DSD_RAW),
        VENDOR_FLG(0x3336, /* HEM devices */