From owner-freebsd-usb@FreeBSD.ORG  Tue Dec 15 14:11:29 2009
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From: MIHIRA Sanpei Yoshiro <sanpei@sanpei.org>
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	Tue, 15 Dec 2009 23:11:28 +0900 (JST)
Subject: 5.1-channel USB sound device on 8.0-RELEASE
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Hi.

  I tested below device on 8.0-RELEASE with patch.

>*1 Kyo-On DIGI(sorry,this page was writtin in Japanese)
>http://www.area-powers.jp/product/usb_product/product/kyo-on/u1soundt4.html

  This device is 5.1-channel USB sound device.

  Without patch, ``No playback!''
ugen0.6: <vendor 0x0d8c> at usbus0
uaudio1: <vendor 0x0d8c product 0x0006, class 0/0, rev 1.10/0.10, addr 6> on usbus0
uaudio1: No playback!
uaudio1: Record: 48000 Hz, 2 ch, 16-bit S-LE PCM format
uaudio1: No midi sequencer
pcm1: <USB audio> on uaudio1

  With patch:
uaudio1: <vendor 0x0d8c product 0x0006, class 0/0, rev 1.10/0.10, addr 6> on usb
us0
uaudio1: Play: 48000 Hz, 8 ch, 16-bit S-LE PCM format
uaudio1: Record: 48000 Hz, 2 ch, 16-bit S-LE PCM format
uaudio1: No midi sequencer
pcm1: <USB audio> on uaudio1

  But I could not play with mpg123, only noise.
  How can I use this device on 8.0-RELEASE.

Cheers.
---
MIHIRA, Sanpei Yoshiro
Tokyo, Japan.


http://freebsd.monkey.org/freebsd-usb/200905/msg00090.html

--- sys/dev/sound/usb/uaudio.c.org	2009-12-07 10:29:05.593175070 +0900
+++ sys/dev/sound/usb/uaudio.c	2009-12-07 10:29:51.030304905 +0900
@@ -112,7 +112,8 @@
 
 #define	MAKE_WORD(h,l) (((h) << 8) | (l))
 #define	BIT_TEST(bm,bno) (((bm)[(bno) / 8] >> (7 - ((bno) % 8))) & 1)
-#define	UAUDIO_MAX_CHAN(x) (x)
+#define UAUDIO_MAX_CHAN(x) (((x) < 2) ? (x) : 2)        /* XXX fixme later */
+
 
 struct uaudio_mixer_node {
 	int32_t	minval;