On Wed, 27 Apr 2011 22:04:24 +0200, baseplast <baseplast@xxxxxxx> wrote:
i looked inside gadget.h and found declaration usb_ep_queue
---
usb_ep_queue(struct usb_ep *ep, struct usb_request *req, gfp_tgfp_flags)
---
but i dint find any call for it in zero.c
however, i found it called inside gmidi.c that is close to my project.
as i realized, each time HCD sends request to my device, gmidi_setup
routine is called. But this routine related only to ep0 control
requests.
Yes, the setup callback is called for control requests only (my
terminology may be wrong here).
After creation of device, i made myendpoints enabled with
err = usb_ep_enable(dev->in_ep, &bulk_in_desc);
err = usb_ep_enable(dev->out_ep, &bulk_out_desc);
ep = dev->out_ep;
req = alloc_ep_req(ep, buflen);
then i calling the
err = usb_ep_queue(ep, req, GFP_ATOMIC);
am i right ?
in what handler do i need to call from in/out endpoints to
receive/send BULK data?
struct usb_request has a complete callback which you need to
set which is called when the request is finished (for OUT
endpoints that means data is available, for IN endpoints
data has been sent to host), cancelled or failed.
Also, if you want to send data you must fill the buffer before
calling usb_ep_queue().
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Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
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