From: Jurgen Kramer <gtmkramer@xs4all.nl>
Date: Fri, 28 Nov 2014 16:32:53 +0000 (+0100)
Subject: ALSA: usb-audio: Add native DSD support for Denon/Marantz DACs
X-Git-Tag: firefly_0821_release~176^2~2610^2~39^2~32
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7a2e9ddc;p=firefly-linux-kernel-4.4.55.git

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 2c1018e447b1..a9d4add89bbe 100644
--- 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;
 }