ALSA: usb-audio: add Edirol SD-90 PCM support

Add support for the 24-bit audio I/Os of the Edirol SD-90 interface.

Reported-any-tested-by: Jim Grusendorf <alsa-user@grusendorf.ca>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/usb/format.c b/sound/usb/format.c
index 69148212aa70..5b792d2c8061 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -76,7 +76,10 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
                 format = 1 << UAC_FORMAT_TYPE_I_PCM;
         }
         if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
-                if (sample_width > sample_bytes * 8) {
+                if (chip->usb_id == USB_ID(0x0582, 0x0016) /* Edirol SD-90 */ &&
+                    sample_width == 24 && sample_bytes == 2)
+                        sample_bytes = 3;
+                else if (sample_width > sample_bytes * 8) {
                         snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
                                    chip->dev->devnum, fp->iface, fp->altsetting,
                                    sample_width, sample_bytes);