linux-kernel - RE: New Driver for DaVinci DM355/DM365/DM6446

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Date:	Mon, 1 Jun 2009 13:39:17 -0500
From:	"Paulraj, Sandeep" <s-paulraj@...com>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
CC:	"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Grosen, Mark" <mgrosen@...com>
Subject: RE: New Driver for DaVinci DM355/DM365/DM6446

Mauro,
      Please see inline

> -----Original Message-----
> From: Mauro Carvalho Chehab [mailto:mchehab@...radead.org]
> Sent: Monday, June 01, 2009 1:57 PM
> To: Paulraj, Sandeep
> Cc: linux-media@...r.kernel.org; linux-kernel@...r.kernel.org; Grosen,
> Mark
> Subject: Re: New Driver for DaVinci DM355/DM365/DM6446
> 
> Em Mon, 1 Jun 2009 11:54:37 -0500
> "Paulraj, Sandeep" <s-paulraj@...com> escreveu:
> 
> >
> >
> > > -----Original Message-----
> > > From: Mauro Carvalho Chehab [mailto:mchehab@...radead.org]
> > > Sent: Monday, June 01, 2009 12:35 PM
> > > To: Paulraj, Sandeep
> > > Cc: linux-media@...r.kernel.org; linux-kernel@...r.kernel.org; Grosen,
> > > Mark
> > > Subject: Re: New Driver for DaVinci DM355/DM365/DM6446
> > >
> > > Em Mon, 1 Jun 2009 09:56:40 -0500
> > > "Paulraj, Sandeep" <s-paulraj@...com> escreveu:
> > >
> > > >
> > > > Hello,
> > > >
> > > > WE have a module(H3A) on Davinci DM6446,DM355 and DM365.
> > > >
> > > > Customers require a way to collect the data required to perform the
> Auto
> > > Exposure (AE), Auto Focus(AF), and Auto White balance (AWB) in
> hardware as
> > > opposed to software. This is primarily for performance reasons as
> there is
> > > not enough software processing MIPS (to do 3A statistics) available in
> > > > an imaging/video system.
> > > >
> > > > Including this block in hardware reduces the load on the processor
> and
> > > bandwidth to the memory as the data is collected on the fly from the
> > > imager.
> > > >
> > > > This modules collects statistics and we currently implement it as a
> > > character driver.
> > > >
> > > > Which mailing list would be the most appropriate mailing list to
> submit
> > > patches for review?
> > >
> > > You should send they to:
> > > 	LMML <linux-media@...r.kernel.org>
> > >
> > > If you are proposing API changes, please submit they first.
> > [Sandeep] WE don't propose any API changes. This module for which we
> want to submit patches is a TI proprietary IP. We currently implement this
> as a character device and have a few IOCTL's.
> > We do not follow the V4L2 framework and do not use any V4L2 IOCTLs.
> >
> > Can we continue to use it as a character driver?
> 
> In this case, I don't see why you want it to be upstream.
[Sandeep] TI customers and TI itself want to see this driver part of open source trees. Considering this we would like to submit our patches to the linux-media mailing list.
IS this OK?
> 
> 
> 
> Cheers,
> Mauro

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