* Re: USB controller status
[not found] ` <CAOzqYK5-W8L8oDwY4iF8kpGAxLOiVTu2vA20sEvzBtkrTk79-A@mail.gmail.com>
@ 2012-01-17 15:14 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2012-01-17 15:14 UTC (permalink / raw)
To: Praveen kumar; +Cc: Linux Kernel, kernelnewbies
On Tue, Jan 17, 2012 at 07:26:24PM +0530, Praveen kumar wrote:
> Hi Greg,
>
> What type of diagnostics are you trying to do?
> I am trying to is to make communication to all the chips present on
> board (from kernel) and make sure all the input/output lines are working on
> that chip and the status of the configuration.
> As I am doing with the other chips like video controller ,audio controller etc
> ,I want to make sure the working condition of the USB controller and some tests
> to prove input and output lines are working and if possible loop back data
> test.
Good luck with that, it might be hard to do from within the kernel :)
> How can it not be configured correctly?
>
> I am not sure in which condition the configuration of controller may fail but
> just I want to make sure the controller is configured properly.
>
> You have looked at the debugfs files for the usb controllers for this
> type of thing already, right?
>
> I have seen debugfs where I can dump all the configuration reg values ,but not
> sure to see which reg values to confirm controller is configured properly.
>
> Also I was trying to get the linux-usb project (http://sourceforge.net/apps/
> trac/sourceforge/wiki/Git) through git to make use of some code in there for
> some of the tests but I am not able to get it.
> Is there any alternative link from where I can get the code (like lsusb.c etc
> )..
usbutils are on github, look in your distro for the location of the
source.
greg k-h
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