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authorDavid Vrabel <david.vrabel@csr.com>2009-04-08 13:36:28 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2009-04-17 13:50:27 -0400
commit3444b26afa145148951112534f298bdc554ec789 (patch)
treeb2c8d9b13d04869ffdad1e46a9ebbf819e7ed7b4 /include/linux
parentd45e230bf03850f17394a760dfa003d986a67729 (diff)
USB: add reset endpoint operations
Wireless USB endpoint state has a sequence number and a current window and not just a single toggle bit. So allow HCDs to provide a endpoint_reset method and call this or clear the software toggles as required (after a clear halt, set configuration etc.). usb_settoggle() and friends are then HCD internal and are moved into core/hcd.h and all device drivers call usb_reset_endpoint() instead. If the device endpoint state has been reset (with a clear halt) but the host endpoint state has not then subsequent data transfers will not complete. The device will only work again after it is reset or disconnected. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/usb.h9
1 files changed, 1 insertions, 8 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index c6b2ab41b908..3aa2cd1f8d08 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1387,6 +1387,7 @@ extern int usb_string(struct usb_device *dev, int index,
1387extern int usb_clear_halt(struct usb_device *dev, int pipe); 1387extern int usb_clear_halt(struct usb_device *dev, int pipe);
1388extern int usb_reset_configuration(struct usb_device *dev); 1388extern int usb_reset_configuration(struct usb_device *dev);
1389extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate); 1389extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate);
1390extern void usb_reset_endpoint(struct usb_device *dev, unsigned int epaddr);
1390 1391
1391/* this request isn't really synchronous, but it belongs with the others */ 1392/* this request isn't really synchronous, but it belongs with the others */
1392extern int usb_driver_set_configuration(struct usb_device *udev, int config); 1393extern int usb_driver_set_configuration(struct usb_device *udev, int config);
@@ -1491,14 +1492,6 @@ void usb_sg_wait(struct usb_sg_request *io);
1491#define usb_pipecontrol(pipe) (usb_pipetype((pipe)) == PIPE_CONTROL) 1492#define usb_pipecontrol(pipe) (usb_pipetype((pipe)) == PIPE_CONTROL)
1492#define usb_pipebulk(pipe) (usb_pipetype((pipe)) == PIPE_BULK) 1493#define usb_pipebulk(pipe) (usb_pipetype((pipe)) == PIPE_BULK)
1493 1494
1494/* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */
1495#define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1)
1496#define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep)))
1497#define usb_settoggle(dev, ep, out, bit) \
1498 ((dev)->toggle[out] = ((dev)->toggle[out] & ~(1 << (ep))) | \
1499 ((bit) << (ep)))
1500
1501
1502static inline unsigned int __create_pipe(struct usb_device *dev, 1495static inline unsigned int __create_pipe(struct usb_device *dev,
1503 unsigned int endpoint) 1496 unsigned int endpoint)
1504{ 1497{