From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: USB controller status
Date: Tue, 17 Jan 2012 07:14:23 -0800 [thread overview]
Message-ID: <20120117151423.GA11094@kroah.com> (raw)
In-Reply-To: <CAOzqYK5-W8L8oDwY4iF8kpGAxLOiVTu2vA20sEvzBtkrTk79-A@mail.gmail.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <greg@kroah.com>
To: Praveen kumar <chatpravi@gmail.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
kernelnewbies@kernelnewbies.org
Subject: Re: USB controller status
Date: Tue, 17 Jan 2012 07:14:23 -0800 [thread overview]
Message-ID: <20120117151423.GA11094@kroah.com> (raw)
In-Reply-To: <CAOzqYK5-W8L8oDwY4iF8kpGAxLOiVTu2vA20sEvzBtkrTk79-A@mail.gmail.com>
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
next prev parent reply other threads:[~2012-01-17 15:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-16 10:45 USB controller status Praveen kumar
2012-01-16 17:37 ` Greg KH
2012-01-16 17:37 ` Greg KH
2012-01-17 13:56 ` Praveen kumar
2012-01-17 15:14 ` Greg KH [this message]
2012-01-17 15:14 ` Greg KH
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