Hi,
I am using a synopsys designware usb device controller on one of our
ARM based platform, which I intend to submit to the mailing list.
Is anybody else working on this device? and whether it is ready for
inclusion in to mainline?
I have one more query. This device has a set of registers (UDC_REGS)
which has to be programmed for each logical endpoint used in the
gadget design. So,
for each endpoint we must know, its
1- number
2- direction
3- type (bulk, isoch etc)
4- config no. (config no. to which this endpoint belongs)
5- interface no. (interface no. to which endpoint belongs)
6- alt interface no. (alt intf to which endpoint belongs)
7- maxpktsize
Among these, 1, 2, 3, 7 and 4(to some extent) are readily available on
set_config. But 5, 6 are embedded in the interface descriptors and the hierarchy
of descriptors which is dependent on the gadget.
Now the driver is actually not aware of this (descriptor) layout i.e.
which endpoint belongs to
which interface and alt interface.
It (the descriptors) are not supplied to the driver but are
transmitted by the gadget on
corresponding request, which again is hard to track.
In ep_enable also we only get endpoint descriptor in the driver which
doesn't carry interface
and alt interface details.
How to configure device in this case?
--
regards
Shiraz Hashim
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