Re: [ddccontrol-devel] [RFC] A common platform usb/ddc/anythingelse ?

[L. <fr...@st...>]

Hello,

I have very little time to work on it and will be off for 2-3 days more.

Le lundi 06 mars 2006 =C3=A0 13:26 +0100, Nicolas Boichat a =C3=A9crit :
> Hi Oleg,
> As far as we know, there is three methods to access USB HID devices:
>  - hiddev, really simple, just like i2c devices, but unfortunately it
> doesn't seem to work.
I started to debug hiddev this evening. I found that hid-core is not
reporting first bytes of the "hid report descriptor" in good order.
I'll try on a i386 computer later and have good hope to make hiddev or
the monitor work right.
I don't know if it is kernel or display's fault. Even if it is a display
bug, I think we should be able to add hiddev support in ddccontrol.

>  - libhid over libusb, but it would require a kind of application like
> ddcpci, as it requires to be root (but it would work on many platforms,
> not only Linux).
I post a little patch on libhid to add vital function needed for
"features hid report", but noone answered :( Without this I can't make
usb command work on my monitor, so I let this away for the moment.

>  - a new kernel module, which of course is not the best solution.
Still on air for me, just for fun. It could be the only solution for me
if my monitor hid implementation is crawled by bugs :)