first usable version of kernel and commands

After an year of hard work, this is a first "usable" version of Jehanne.

sys/include/usb/audioctl.h

@@ -0,0 +1,38 @@
+/*
+ * This file is part of the UCB release of Plan 9. It is subject to the license
+ * terms in the LICENSE file found in the top-level directory of this
+ * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
+ * part of the UCB release of Plan 9, including this file, may be copied,
+ * modified, propagated, or distributed except according to the terms contained
+ * in the LICENSE file.
+ */
+
+enum{
+	Undef = 0x80000000,
+	Play = 0,
+	Record = 1,
+};
+
+typedef struct Audiocontrol Audiocontrol;
+
+struct Audiocontrol {
+	char	*name;
+	uint8_t	readable;
+	uint8_t	settable;
+	uint8_t	chans;		/* 0 is master, non-zero is bitmap */
+	int32_t	value[8];	/* 0 is master; value[0] == Undef -> all values Undef */
+	int32_t	min, max, step;
+};
+
+extern Audiocontrol controls[2][Ncontrol];
+extern int endpt[2];
+extern int interface[2];
+extern int featureid[2];
+extern int selectorid[2];
+extern int mixerid[2];
+extern int buttonendpt;
+
+int	ctlparse(char *s, Audiocontrol *c, int32_t *v);
+void	ctlevent(void);
+
+#pragma	varargck	type	"A"	Audiocontrol*