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>
diff --git a/sound/usb/format.c b/sound/usb/format.c
index 6914821..5b792d2 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -76,7 +76,10 @@
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);