From: mia soweli <inbox@tachibana-labs.org>
Date: Sat, 20 May 2023 19:15:57 +0000
Subject: [PATCH] nusb/lib: add setconf() to set the configuration

---
diff f27164167a90a7bc8613375a2d90f2438625518b e3cd2bf512fee93d44d1f48c9813f15f81b21938
--- a/sys/src/cmd/nusb/lib/dev.c
+++ b/sys/src/cmd/nusb/lib/dev.c
@@ -483,6 +483,16 @@
 }
 
 int
+setconf(Dev *d, Conf *c)
+{
+	if(usbcmd(d, Rh2d|Rstd|Rdev, Rsetconf, c->cval, 0, nil, 0) > 0) {
+		werrstr("setconf: %s: %r", d->dir);
+		return -1;
+	}
+	return 0;
+}
+
+int
 setalt(Dev *d, Iface *ifc)
 {
 	if(usbcmd(d, Rh2d|Rstd|Riface, Rsetiface, ifc->alt, ifc->id, nil, 0) < 0){
--- a/sys/src/cmd/nusb/lib/usb.h
+++ b/sys/src/cmd/nusb/lib/usb.h
@@ -353,6 +353,7 @@
 int	unstall(Dev *dev, Dev *ep, int dir);
 int	usbcmd(Dev *d, int type, int req, int value, int index, uchar *data, int count);
 Dev*	getdev(char *devid);
+int	setconf(Dev *d, Conf *c);
 int	setalt(Dev *d, Iface *ifc);
 
 extern int usbdebug;	/* more messages for bigger values */