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-rw-r--r--sound/usb/quirks.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 175fbb7d334a..e564adb74852 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -916,3 +916,31 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
mdelay(20);
}
+/*
+ * snd_usb_interface_dsd_format_quirks() is called from format.c to
+ * augment the PCM format bit-field for DSD types. The UAC standards
+ * don't have a designated bit field to denote DSD-capable interfaces,
+ * hence all hardware that is known to support this format has to be
+ * listed here.
+ */
+u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
+ struct audioformat *fp,
+ unsigned int sample_bytes)
+{
+ /* Playback Designs */
+ if (le16_to_cpu(chip->dev->descriptor.idVendor) == 0x23ba) {
+ switch (fp->altsetting) {
+ case 1:
+ fp->dsd_dop = true;
+ return SNDRV_PCM_FMTBIT_DSD_U16_LE;
+ case 2:
+ fp->dsd_bitrev = true;
+ return SNDRV_PCM_FMTBIT_DSD_U8;
+ case 3:
+ fp->dsd_bitrev = true;
+ return SNDRV_PCM_FMTBIT_DSD_U16_LE;
+ }
+ }
+
+ return 0;
+}