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nusb/joy: send magic packet to enable playstation controller events

--- a/sys/src/cmd/nusb/joy/joy.c

+++ b/sys/src/cmd/nusb/joy/joy.c

@@ -359,7 +359,22 @@

 	}

 }

+/* apply quirks for special devices */

 static void

+quirks(Dev *d)

+{

+	int ret;

+	uchar buf[17];

+

+	/* sony dualshock 3 (ps3) controller requires special enable command */

+	if(d->usb->vid == 0x054c && d->usb->did == 0x0268){

+		ret = usbcmd(d, Rd2h|Rclass|Riface, Getreport, (0x3<<8) | 0xF2, 0, buf, sizeof(buf));

+		if(ret < 0)

+			sysfatal("failed to enable ps3 controller: %r");

+	}

+}

+

+static void

 kbstart(Dev *d, Ep *ep, void (*f)(void*))

 {

 	KDev *kd;

@@ -380,6 +395,7 @@

 		fprint(2, "%s: %s: opendevdata: %r\n", argv0, kd->ep->dir);

 		goto Err;

 	}

+	quirks(kd->dev);

 	f(kd);

 	return;

 Err: