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usb: gadget: add isochronous support to gadget zero

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Add two isochronous endpoints to the gadget zero source/sink
function. They are enabled by selecting alternate interface 1, so
by default they are not enabled. Module parameters for setting all
the isoc endpoint characteristics are also provided.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Paul Zimmerman
2012-04-16 14:19:06 -07:00
committed by Felipe Balbi
parent 20c5e74c7b
commit b4036ccdd2
4 changed files with 387 additions and 65 deletions
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5
drivers/usb/gadget/g_zero.h
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@@ -13,10 +13,11 @@ extern unsigned buflen;
extern const struct usb_descriptor_header *otg_desc[];
/* common utilities */
struct usb_request *alloc_ep_req(struct usb_ep *ep);
struct usb_request *alloc_ep_req(struct usb_ep *ep, int len);
void free_ep_req(struct usb_ep *ep, struct usb_request *req);
void disable_endpoints(struct usb_composite_dev *cdev,
struct usb_ep *in, struct usb_ep *out);
struct usb_ep *in, struct usb_ep *out,
struct usb_ep *iso_in, struct usb_ep *iso_out);
/* configuration-specific linkup */
int sourcesink_add(struct usb_composite_dev *cdev, bool autoresume);