Re: question on initiating gadget out/in transfer

> i am writing a driver for a controller to support
> the gadget api, so far i can enumerate the
> device

Good, that means you're near the first milestone.
Make sure it passes all the "usbtest" control test
cases, including running test #10 for a few hours.

.	but i am not sure on how to invoke
> ins and outs on the gadget side.

In response to a SET_CONFIGURATION request, or
after that's done sometimes in response to a
SET_INTERFACE (altsetting) request.


>	with control
> transfers it is straightforward, i get a control
> packet and then call the setup() function to
> forward it to gadget.

Yes.

>		my theory was that with
> regular transfers gadget would queue an
> in and an out request at all times and my driver
> would call the complete() function once it would
> fill in the buffer,

If by "fill in the buffer" you copying data from
the controller FIFO for OUT data, or copying it
into the corresponding FIFO for IN data, yes ...

Note that you have a simple operational test for
this, called "Gadget Zero". That code works right,
so if your it doesn't work right with your driver
then the problem is in your code.


>	but i do not see that happening;
> so either i am doing something wrong or the
> gadget api uses a different mechanism.

It's hard to know exactly what you mean to say,
but as I pointed out above there's already a
simple illustration in "gadget zero".  If that
driver doesn't work, you're doing something wrong.

- Dave


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