Adam Sulmicki wrote:
> is there some way to run USB in polled mode?
>
> It seems I have lots of trouble getting the USB remote
> to work in IRQ driven mode.
Oliver Neukum wrote:
> What exactly do you mean by that? On a bus level USB is a polling
> protocol.
This, unfortunately, means that I don't quite know what I'm doing :-(
As far as the remote goes, I have observed that:
* if I unplug it and plug it in again, it usually won't work.
* reloading module helps. sometimes I need to reload usbhid, other times I
need to resort to use usbkbd instead. I think that usbkbd in its limited
functionality pretty reliably restarts remote.
I have done "watch -d -n 1 cat /proc/interrupts" and was comparing it when
it works and when it does not work. I can see that when it works
interrupts are generated for uhci_hcd:usb1, but when it does not work, no
interrupts are generated, nor does anything shows up on the usbmon (cat
/sys/kernel/debug/usbmon/1t). Thus, my above post above polled mode.
So the basic issue is how to fix it so that I do not have to reload
modules for the remote to work on re-plugging it.
For what it is worth, I have updated the web page below with whatever info
I could extract.
http://www.missl.cs.umd.edu/~adam/cy/
Thanks!
Adam
PS : I read the list via web archives, so cc makes life much easier.
--
Adam Sulmicki
http://www.eax.com The Supreme Headquarters of the 32 bit registers
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