Add the new function usbd_clear_endpoint_feature() which allows to issue

an UR_CLEAR_FEATURE request on a specific endpoint address without the
need to have a pipe open to that endpoint.

From NetBSD, ok mpi@

diff --git a/sys/dev/usb/usbdi_util.c b/sys/dev/usb/usbdi_util.c
index 5c067c1..4b2cdc5 100644 (file)
--- a/sys/dev/usb/usbdi_util.c
+++ b/sys/dev/usb/usbdi_util.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: usbdi_util.c,v 1.44 2019/10/06 17:11:51 mpi Exp $ */
+/*     $OpenBSD: usbdi_util.c,v 1.45 2021/01/25 14:05:57 mglocker Exp $ */
 /*     $NetBSD: usbdi_util.c,v 1.40 2002/07/11 21:14:36 augustss Exp $ */
 /*     $FreeBSD: src/sys/dev/usb/usbdi_util.c,v 1.14 1999/11/17 22:33:50 n_hibma Exp $ */
 
@@ -191,6 +191,19 @@ usbd_clear_port_feature(struct usbd_device *dev, int port, int sel)
        return (usbd_do_request(dev, &req, 0));
 }
 
+usbd_status
+usbd_clear_endpoint_feature(struct usbd_device *dev, int epaddr, int sel)
+{
+       usb_device_request_t req;
+
+       req.bmRequestType = UT_WRITE_ENDPOINT;
+       req.bRequest = UR_CLEAR_FEATURE;
+       USETW(req.wValue, sel);
+       USETW(req.wIndex, epaddr);
+       USETW(req.wLength, 0);
+       return (usbd_do_request(dev, &req, 0));
+}
+
 usbd_status
 usbd_set_port_feature(struct usbd_device *dev, int port, int sel)
 {

diff --git a/sys/dev/usb/usbdi_util.h b/sys/dev/usb/usbdi_util.h
index 81a4685..04c149b 100644 (file)
--- a/sys/dev/usb/usbdi_util.h
+++ b/sys/dev/usb/usbdi_util.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: usbdi_util.h,v 1.29 2014/12/08 22:00:11 mpi Exp $ */
+/*     $OpenBSD: usbdi_util.h,v 1.30 2021/01/25 14:05:57 mglocker Exp $ */
 /*     $NetBSD: usbdi_util.h,v 1.28 2002/07/11 21:14:36 augustss Exp $ */
 /*     $FreeBSD: src/sys/dev/usb/usbdi_util.h,v 1.9 1999/11/17 22:33:50 n_hibma Exp $  */
 
@@ -41,6 +41,7 @@ usbd_status   usbd_set_hub_feature(struct usbd_device *dev, int);
 usbd_status    usbd_clear_hub_feature(struct usbd_device *, int);
 usbd_status    usbd_set_port_feature(struct usbd_device *dev, int, int);
 usbd_status    usbd_clear_port_feature(struct usbd_device *, int, int);
+usbd_status    usbd_clear_endpoint_feature(struct usbd_device *, int, int);
 usbd_status    usbd_get_device_status(struct usbd_device *, usb_status_t *);
 usbd_status    usbd_get_hub_status(struct usbd_device *, usb_hub_status_t *);
 usbd_status    usbd_get_hub_descriptor(struct usbd_device *,