diff options
Diffstat (limited to 'sound/usb/quirks.c')
| -rw-r--r-- | sound/usb/quirks.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index a9d4add89bb..e0cde741e41 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1111,6 +1111,44 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs, } } + +/* Marantz/Denon USB DACs need a vendor cmd to switch + * between PCM and native DSD mode + */ +int snd_usb_select_mode_quirk(struct snd_usb_substream *subs, + struct audioformat *fmt) +{ + struct usb_device *dev = subs->dev; + int err; + + switch (subs->stream->chip->usb_id) { + case USB_ID(0x154e, 0x3005): /* Marantz HD-DAC1 */ + case USB_ID(0x154e, 0x3006): /* Marantz SA-14S1 */ + + /* First switch to alt set 0, otherwise the mode switch cmd + * will not be accepted by the DAC + */ + err = usb_set_interface(dev, fmt->iface, 0); + if (err < 0) + return err; + + mdelay(20); /* Delay needed after setting the interface */ + + switch (fmt->altsetting) { + case 2: /* DSD mode requested */ + case 1: /* PCM mode requested */ + err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0, + USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE, + fmt->altsetting - 1, 1, NULL, 0); + if (err < 0) + return err; + break; + } + mdelay(20); + } + return 0; +} + void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep) { /* |