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| author | David Lopo <lopo.david@gmail.com> | 2008-04-29 13:12:37 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-05-02 21:25:58 +0400 |
| commit | a5e54b0dbb6a099793caf508b1d6c7d82f965ec3 (patch) | |
| tree | a36d616f8445e9576214850054b0f1746f9c33be /include/linux/usb/gadget.h | |
| parent | c4d0f8cbca3a97900f85b082064a63c7a5928bd7 (diff) | |
| download | linux-a5e54b0dbb6a099793caf508b1d6c7d82f965ec3.tar.xz | |
USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance
Gadget can tell controller driver to ignore Clear-Feature(HALT_ENDPOINT)
This API change enables future support for Bulk-Only Transport compliance
Signed-off-by: David Lopo <lopo.david@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb/gadget.h')
| -rw-r--r-- | include/linux/usb/gadget.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index d8128f7102c9..cf468fbdbf8e 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -114,6 +114,8 @@ struct usb_ep_ops { int (*dequeue) (struct usb_ep *ep, struct usb_request *req); int (*set_halt) (struct usb_ep *ep, int value); + int (*set_wedge) (struct usb_ep *ep); + int (*fifo_status) (struct usb_ep *ep); void (*fifo_flush) (struct usb_ep *ep); }; @@ -349,6 +351,25 @@ static inline int usb_ep_clear_halt(struct usb_ep *ep) } /** + * usb_ep_set_wedge - sets the halt feature and ignores clear requests + * @ep: the endpoint being wedged + * + * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT) + * requests. If the gadget driver clears the halt status, it will + * automatically unwedge the endpoint. + * + * Returns zero on success, else negative errno. + */ +static inline int +usb_ep_set_wedge(struct usb_ep *ep) +{ + if (ep->ops->set_wedge) + return ep->ops->set_wedge(ep); + else + return ep->ops->set_halt(ep, 1); +} + +/** * usb_ep_fifo_status - returns number of bytes in fifo, or error * @ep: the endpoint whose fifo status is being checked. * |