S3C OTG udc driver isochronous support

[Barry Song]

Thomas,
Thanks for your reply.

On Wed, Dec 29, 2010 at 12:02 PM, Thomas Abraham <thomas.ab at samsung.com> wrote:
> On Sun, Dec 26, 2010 at 10:06 PM, Barry Song <21cnbao at gmail.com> wrote:
>> Hi All,
>> After checking the S3C OTG udc drivers in drivers/usb/gadget, i didn't
>> find it can support isochronous endpoint. According to datasheet of
>> S3C6410, EPtype field of DIEPCTLn and DOEPCTLn is read-only. Current
>> S3C OTG udc driver list ep0~ep9, which are control endpoint and
>> bulk/int endpoint according to the source codes:
>
> Iso transfer type is not yet supported in the s3c otg driver. But the
> EPtype field can be programmed as bulk, interrupt or iso endpoint. Iso
> transfers have been used on 6410 but that support is not yet posted.

datasheet says the field is read-only :(
can you post the iso mode codes then i can use ahead?

>
>> static struct s3c_udc memory = {
>>        .usb_address = 0,
>>
>>        .gadget = {
>>                   .ops = &s3c_udc_ops,
>>                   .ep0 = &memory.ep[0].ep,
>
> <snip>
>
> The drivers/usb/gadget/s3c-hsotg.c file is the s3c usb otg gadget
> driver. Are you referring to some other file.

What i am referring is a samsung 2.6.28 tree in git.kernel.org, i
think it has different otg gadget source codes with yours.

>
>> ep10~ep14 are not in the list. So is it possible ep10~ep14 are iso
>> endpoints? I guess only samsung engineers can answer this question.
>> And has anybody improved the udc driver to support ISO mode? Here i
>> want to use this mode to support g_webcam gadget.
>
>>
>> Thanks
>> Barry
>>
> <snip>
>