Thank you for your reply. On Nov 10, 2007 7:22 AM, Greg KH <greg at kroah.com> wrote: > > On Sun, Nov 04, 2007 at 11:30:17PM +0800, Peter Teoh wrote: > > At the drivers needed list: > > > > http://www.linuxdriverproject.org/twiki/bin/view/Main/DriversNeeded > > > > I saw one named as Passmark USB loopback test plugs. Looks interesting for me. > > > > So my question is: > > > > a. Anyone working on this yet? > > b. Currently at the Passmark site, are listed all the windows > > drivers. I thought of just converting all those from windows to > > Linux - from those who have experienced before, any comments? > > (difficulties to be encountered, conformance to Linux kernel design > > etc). > > Do you have access to the specs for these devices? You are going to > need them in order for you, or anyone else, to be able to write a Linux > driver for the devices. > > Also, you might not need a kernel driver for these devices, we already > have a usb-test kernel module that achives much of this already for > Linux and is very good for testing. > > thanks, > > greg k-h > I have been correspond with the Passmark guy, and he seemed pretty much interested, as the linux part is what they are lacking, and they would like to get the loopback function out first, followed by other functionality later. The specs, as he mentioned, is just the Cypress 68013A chip (which is recognized by the usbtest.c as one of the PID/VID), so I have been trying to understand usbtest.c to see how it can be modified to test the loopback functionality. I don't have that hardware, but a close relative one - which is OSR FX2, (which is based on the same chip, but the PID/VID is different). I am still learning the ropes of writing the driver, any technical problem I will come back to this list or to Passmark. Thanks!!!
