ALSA: usb-audio: Generic DSD detection for Thesycon-based implementations

Thesycon provides solutions to XMOS chips, and has its own device
vendor id.

In this patch, we use generic method to detect DSD capability of
Thesycon-based UAC2 implementations in order to support a wide range
of current and future devices.

The patch will enable the SNDRV_PCM_FMTBIT_DSD_U32_BE bit for the DAC
hence enable native DSD playback up to DSD512 format.

Signed-off-by: Yue Wang <yuleopen@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 02b6cc0..06ae3f5 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1443,6 +1443,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
         */
        switch (USB_ID_VENDOR(chip->usb_id)) {
        case 0x20b1:  /* XMOS based devices */
+       case 0x152a:  /* Thesycon devices */
        case 0x25ce:  /* Mytek devices */
                if (fp->dsd_raw)
                        return SNDRV_PCM_FMTBIT_DSD_U32_BE;