Hans Verkuil | 9 Jul 12:40 2010
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Re: V4L2 radio drivers for TI-WL7

On Tuesday 06 July 2010 07:07:12 Pavan Savoy wrote:
> 
> --- On Mon, 5/7/10, Hans Verkuil <hverkuil <at> xs4all.nl> wrote:
> 
> > From: Hans Verkuil <hverkuil <at> xs4all.nl>
> > Subject: Re: V4L2 radio drivers for TI-WL7
> > To: pavan_savoy <at> ti.com
> > Cc: linux-media <at> vger.kernel.org, matti.j.aaltonen <at> nokia.com, mchehab <at> infradead.org, "pavan
savoy" <pavan_savoy <at> yahoo.co.in>, eduardo.valentin <at> nokia.com
> > Date: Monday, 5 July, 2010, 11:51 AM
> > On Friday 02 July 2010 09:01:34 Pavan
> > Savoy wrote:
> > > Hi,
> > > 
> > > We have/in process of developing a V4L2 driver for the
> > FM Radio on the Texas Instruments WiLink 7 module.
> > > 
> > > For transport/communication with the chip, we intend
> > to use the shared transport driver currently staged in
> > mainline at drivers/staging/ti-st/.
> > > 
> > > To which tree should I generate patches against? is
> > the tree
> > >
> > git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6.git
> > > fine ? to be used with the v4l_for_2.6.35 branch ?
> > 
> > You patch against git://git.linuxtv.org/v4l-dvb.git.
> > 
> > > 
> > > Also, this is over the UART/TTY unlike the WL1273 i2c
> > mfd driver...
> > 
> > Is the WiLink 7 a platform device (i.e. an integral part of
> > the CPU) or a separate
> > chip that can be used with any hardware?
> > 
> > Will the FM Radio always be controlled over a UART/TTY bus
> > or is that specific
> > to your development platform?
> 
> WiLink 7 would be a peripheral which has 1 interface with apps processor being UART, more details at,
> 
> http://www.google.co.in/url?sa=t&source=web&cd=3&ved=0CBQQFjAC&url=http%3A%2F%2Ffocus.ti.com%2Fgeneral%2Fdocs%2Fwtbu%2Fwtbuproductcontent.tsp%3FtemplateId%3D6123%26navigationId%3D12859%26contentId%3D67453%26DCMP%3Dwtbu_wilink7_2010%26HQS%3DOther%2BPR%2Bwilink7videos&ei=d7kyTKPXMoTGlQfJ-7W-Cw&usg=AFQjCNEjN2jc9TdSDWDRtWcmbZn6Szhbug&sig2=DN4gAQls9AdOeHQhlPlvjA
> 
> Since there exists only 1 interface for all BT/FM and GPS cores on chip, a shared transport driver has been
developed and placed at drivers/staging/ti-st/

It sounds like this will be typically used in embedded systems and implemented as a
platform device.

> Would it be suitable if we place the V4L2 FM driver at drivers/staging/ti-st/ to ? Since we don't have the
common interface headers such as st.h in include/linux..

Staging is fine. This driver can still be merged through the v4l-dvb repositories,
even if it is in staging.

Regards,

         Hans

--

-- 
Hans Verkuil - video4linux developer - sponsored by TANDBERG, part of Cisco

Gmane