ALSA: usb-audio: Add native DSD support for Luxman DA-06

Add native DSD support quirk for Luxman DA-06 DAC, by adding the
PID/VID 1852:5065.

Rename "is_marantz_denon_dac()" function to "is_itf_usb_dsd_2alts_dac()"
to cover broader device family sharing the same USB audio
implementation(*).
For the same reason, rename "is_teac_dsd_dac()" function to
"is_itf_usb_dsd_3alts_dac()".

(*)
These devices have the same USB controller "ITF-USB DSD", supplied by
INTERFACE Co., Ltd.
"ITF-USB DSD" USB controller has two patterns,

Pattern 1. (2 altsets version)
- Altset 0: for control
- Altset 1: for stream (S32)
- Altset 2: for stream (S32, DSD_U32)

Pattern 2. (3 altsets version)
- Altset 0: for control
- Altset 1: for stream (S16)
- Altset 2: for stream (S32)
- Altset 3: for stream (S32, DSD_U32)

"is_itf_usb_dsd_2alts_dac()" returns true, if the DAC has "Pattern 1"
USB controller, and "is_itf_usb_dsd_3alts_dac()" returns true, if
"Pattern2".

Signed-off-by: Nobutaka Okabe <nob77413@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 16 insertions, 13 deletions

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 6aa0ebd4a5a2..dec86df3f47a 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1149,24 +1149,27 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
         return false;
 }
 
-/* Marantz/Denon USB DACs need a vendor cmd to switch
+/* ITF-USB DSD based DACs need a vendor cmd to switch
  * between PCM and native DSD mode
+ * (2 altsets version)
  */
-static bool is_marantz_denon_dac(unsigned int id)
+static bool is_itf_usb_dsd_2alts_dac(unsigned int id)
 {
         switch (id) {
         case USB_ID(0x154e, 0x1003): /* Denon DA-300USB */
         case USB_ID(0x154e, 0x3005): /* Marantz HD-DAC1 */
         case USB_ID(0x154e, 0x3006): /* Marantz SA-14S1 */
+        case USB_ID(0x1852, 0x5065): /* Luxman DA-06 */
                 return true;
         }
         return false;
 }
 
-/* TEAC UD-501/UD-503/NT-503 USB DACs need a vendor cmd to switch
- * between PCM/DOP and native DSD mode
+/* ITF-USB DSD based DACs need a vendor cmd to switch
+ * between PCM and native DSD mode
+ * (3 altsets version)
  */
-static bool is_teac_dsd_dac(unsigned int id)
+static bool is_itf_usb_dsd_3alts_dac(unsigned int id)
 {
         switch (id) {
         case USB_ID(0x0644, 0x8043): /* TEAC UD-501/UD-503/NT-503 */
@@ -1183,7 +1186,7 @@ int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
         struct usb_device *dev = subs->dev;
         int err;
 
-        if (is_marantz_denon_dac(subs->stream->chip->usb_id)) {
+        if (is_itf_usb_dsd_2alts_dac(subs->stream->chip->usb_id)) {
                 /* First switch to alt set 0, otherwise the mode switch cmd
                  * will not be accepted by the DAC
                  */
@@ -1204,7 +1207,7 @@ int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
                         break;
                 }
                 mdelay(20);
-        } else if (is_teac_dsd_dac(subs->stream->chip->usb_id)) {
+        } else if (is_itf_usb_dsd_3alts_dac(subs->stream->chip->usb_id)) {
                 /* Vendor mode switch cmd is required. */
                 switch (fmt->altsetting) {
                 case 3: /* DSD mode (DSD_U32) requested */
@@ -1300,10 +1303,10 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
             (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
                 mdelay(20);
 
-        /* Marantz/Denon devices with USB DAC functionality need a delay
+        /* ITF-USB DSD based DACs functionality need a delay
          * after each class compliant request
          */
-        if (is_marantz_denon_dac(chip->usb_id)
+        if (is_itf_usb_dsd_2alts_dac(chip->usb_id)
             && (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
                 mdelay(20);
 
@@ -1390,14 +1393,14 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
                 break;
         }
 
-        /* Denon/Marantz devices with USB DAC functionality */
-        if (is_marantz_denon_dac(chip->usb_id)) {
+        /* ITF-USB DSD based DACs (2 altsets version) */
+        if (is_itf_usb_dsd_2alts_dac(chip->usb_id)) {
                 if (fp->altsetting == 2)
                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
         }
 
-        /* TEAC devices with USB DAC functionality */
-        if (is_teac_dsd_dac(chip->usb_id)) {
+        /* ITF-USB DSD based DACs (3 altsets version) */
+        if (is_itf_usb_dsd_3alts_dac(chip->usb_id)) {
                 if (fp->altsetting == 3)
                         return SNDRV_PCM_FMTBIT_DSD_U32_BE;
         }