ALSA: usb-audio: Add native DSD support for Denon/Marantz DACs

This patch adds native DSD support for the following devices:
- Marantz SA-14S1
- Marants HD-DAC1

Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2c1018e..a9d4add 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1213,5 +1213,16 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
                break;
        }
 
+       /* Denon/Marantz devices with USB DAC functionality */
+       switch (chip->usb_id) {
+       case USB_ID(0x154e, 0x3005): /* Marantz HD-DAC1 */
+       case USB_ID(0x154e, 0x3006): /* Marantz SA-14S1 */
+               if (fp->altsetting == 2)
+                       return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+               break;
+       default:
+               break;
+       }
+
        return 0;
 }