[PATCH 4.16 067/161] ALSA: usb-audio: Add native DSD support for Luxman DA-06

From: Greg Kroah-Hartman
Date: Thu May 24 2018 - 05:27:37 EST


4.16-stable review patch. If anyone has any objections, please let me know.

------------------

From: Nobutaka Okabe <nob77413@xxxxxxxxx>

[ Upstream commit 71426535f49fe6034d0e0db77608b91a0c1a022d ]

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@xxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/usb/quirks.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1149,24 +1149,27 @@ bool snd_usb_get_sample_rate_quirk(struc
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
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
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_de
(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(
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;
}