On 11/30/2012 07:39 PM, Michal Nazarewicz wrote:
On Fri, Nov 30 2012, Sebastian Andrzej Siewior wrote:
That won't work. You can only symlink an instance to one UDC. It is an
instance after all. If you want two ACM ports you need two ACM folder
in your functions folder:
acm.ttyS0
acm.ttyS1
Yeah, but what Felipe just made me realise is that if that's the case,
than it makes no sense to have the functions directory outside of the
gadget. Instead we should have something like:
Yes. Except if we want to move functions from one udc to another.
Doesn't this look useful? Are sure we won't to disallow this?
Within /sys/kerne/config/usb_gadget:
udcs/dummy.0/gadget -> ../../gadgets/blah
udcs/dummy.1/gadcet -> ../../gadgets/foo
gadgets/blah/functions/acm.0
gadgets/blah/functions/mass-storage.0
gadgets/blah/configs/0/functions/0 -> ../../../function/acm.0
gadgets/blah/configs/0/functions/1 -> ../../../function/mass-storage.0
gadgets/blah/configs/1/functions/0 -> ../../../function/acm.0
gadgets/blah/configs/2/functions/0 -> ../../../function/mass-storage.0
gadgets/blah/udc -> ../../udcs/dummy.0
gadgets/foo/functions/ether.0
gadgets/foo/functions/mass-storage.0
gadgets/foo/configs/0/functions/0 -> ../../../function/ether.0
gadgets/foo/configs/0/functions/1 -> ../../../function/mass-storage.0
gadgets/foo/configs/1/functions/0 -> ../../../function/ether.0
gadgets/foo/configs/2/functions/0 -> ../../../function/mass-storage.0
gadgets/foo/udc -> ../../udcs/dummy.0
blah and foo are arbitrary. Same goes for numbers after the dot in
function names.
Sebastian
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