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authorNobutaka Okabe <nob77413@gmail.com>2017-04-04 19:32:14 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-12 12:41:17 +0200
commit2bd6cc1cce47a4e572ba5f9107b34120cd8c3302 (patch)
treea49e45c3595fef2d3a787731e24456c3908f56ea /sound
parent8ae7242fea545a4dbaef6a4b545b6cf288a0d789 (diff)
downloadlinux-aarch64-2bd6cc1cce47a4e572ba5f9107b34120cd8c3302.tar.gz
ALSA: usb-audio: Add native DSD support for TEAC 501/503 DAC
[ Upstream commit 7f38ca047b0cb54df7f6d9e4110e292e45dba6ad ] This patch adds native DSD support for the following devices. - TEAC NT-503 - TEAC UD-503 - TEAC UD-501 (1) Add quirks for native DSD support for TEAC devices. (2) A specific vendor command is needed to switch between PCM/DOP and DSD mode, same as Denon/Marantz devices. Signed-off-by: Nobutaka Okabe <nob77413@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/usb/quirks.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 93bb14e7e0f7..eb4b9f7a571e 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1166,6 +1166,18 @@ static bool is_marantz_denon_dac(unsigned int id)
return false;
}
+/* TEAC UD-501/UD-503/NT-503 USB DACs need a vendor cmd to switch
+ * between PCM/DOP and native DSD mode
+ */
+static bool is_teac_50X_dac(unsigned int id)
+{
+ switch (id) {
+ case USB_ID(0x0644, 0x8043): /* TEAC UD-501/UD-503/NT-503 */
+ return true;
+ }
+ return false;
+}
+
int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
struct audioformat *fmt)
{
@@ -1193,6 +1205,26 @@ int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
break;
}
mdelay(20);
+ } else if (is_teac_50X_dac(subs->stream->chip->usb_id)) {
+ /* Vendor mode switch cmd is required. */
+ switch (fmt->altsetting) {
+ case 3: /* DSD mode (DSD_U32) requested */
+ err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
+ USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
+ 1, 1, NULL, 0);
+ if (err < 0)
+ return err;
+ break;
+
+ case 2: /* PCM or DOP mode (S32) requested */
+ case 1: /* PCM mode (S16) requested */
+ err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
+ USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
+ 0, 1, NULL, 0);
+ if (err < 0)
+ return err;
+ break;
+ }
}
return 0;
}
@@ -1338,5 +1370,11 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
return SNDRV_PCM_FMTBIT_DSD_U32_BE;
}
+ /* TEAC devices with USB DAC functionality */
+ if (is_teac_50X_dac(chip->usb_id)) {
+ if (fp->altsetting == 3)
+ return SNDRV_PCM_FMTBIT_DSD_U32_BE;
+ }
+
return 0;
}