From 848f3a82df50fcc68a78c9d7d45e210b626b0283 Mon Sep 17 00:00:00 2001 From: Jurgen Kramer Date: Fri, 5 Sep 2014 18:14:46 +0200 Subject: ALSA: usb-audio: add native DSD support for XMOS based DACs Add quirks for XMOS based DACs for native DSD playback support using the new DSD_U32_LE sample format. This version adds native DSD support for: - iFi Audio micro iDSD/nano iDSD (they use the same prod. id) - DIYINHK USB to I2S/DSD converter Changes from v2: - fix and simplify switch statement Changes from v1: - use specific product id and alt setting per XMOS based device [fixed a misc coding style issue by tiwai] Signed-off-by: Jurgen Kramer Signed-off-by: Takashi Iwai --- sound/usb/quirks.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'sound/usb') diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 19a921eb75f1..d2aa45a8d895 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1174,5 +1174,21 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip, } } + /* XMOS based USB DACs */ + switch (chip->usb_id) { + /* iFi Audio micro/nano iDSD */ + case USB_ID(0x20b1, 0x3008): + if (fp->altsetting == 2) + return SNDRV_PCM_FMTBIT_DSD_U32_LE; + break; + /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */ + case USB_ID(0x20b1, 0x2009): + if (fp->altsetting == 3) + return SNDRV_PCM_FMTBIT_DSD_U32_LE; + break; + default: + break; + } + return 0; } -- cgit v1.2.2