From 6874daad4b0fbed5b2f9bef7f4d3f2b895463a95 Mon Sep 17 00:00:00 2001 From: Jurgen Kramer Date: Fri, 28 Nov 2014 17:32:54 +0100 Subject: ALSA: usb-audio: Add mode select quirk for Denon/Marantz DACs Denon/Marantz USB DACs need a specific vendor command to switch between PCM and DSD mode. This patch adds a new quirk function to switch between the two modes using the specific USB vendor command. This patch applies to the following devices: - Marantz SA-14S1 - Marantz HD-DAC1 Signed-off-by: Jurgen Kramer Signed-off-by: Takashi Iwai --- sound/usb/pcm.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'sound/usb/pcm.c') diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index c62a1659106d..0d8aba5fe1a8 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -482,6 +482,11 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) /* set interface */ if (subs->interface != fmt->iface || subs->altset_idx != fmt->altset_idx) { + + err = snd_usb_select_mode_quirk(subs, fmt); + if (err < 0) + return -EIO; + err = usb_set_interface(dev, fmt->iface, fmt->altsetting); if (err < 0) { dev_err(&dev->dev, -- cgit