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usb: gadget: add generic map/unmap request utilities

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such utilities are currently duplicated on all UDC
drivers basically with the same structure. Let's group
all implementations into one generic implementation
and get rid of that duplication.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2011-12-15 13:31:48 +02:00
parent c15e03e155
commit a698908d3b
2 changed files with 62 additions and 0 deletions
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10
include/linux/usb/gadget.h
View file

@ -950,6 +950,16 @@ static inline void usb_free_descriptors(struct usb_descriptor_header **v)
/*-------------------------------------------------------------------------*/
/* utility to simplify map/unmap of usb_requests to/from DMA */
extern int usb_gadget_map_request(struct usb_gadget *gadget,
struct usb_request *req, int is_in);
extern void usb_gadget_unmap_request(struct usb_gadget *gadget,
struct usb_request *req, int is_in);
/*-------------------------------------------------------------------------*/
/* utility wrapping a simple endpoint selection policy */
extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,