linux-kernel - Re: [PATCH] media: Add BCM2048 radio driver

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Date:	Sat, 26 Oct 2013 22:04:33 +0200
From:	Pali Rohár <pali.rohar@...il.com>
To:	Hans Verkuil <hverkuil@...all.nl>
Cc:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	Eero Nurkkala <ext-eero.nurkkala@...ia.com>,
	Nils Faerber <nils.faerber@...nelconcepts.de>,
	Joni Lapilainen <joni.lapilainen@...il.com>
Subject: Re: [PATCH] media: Add BCM2048 radio driver

Hans, so can it be added to drivers/staging/media tree?

On Thursday 17 October 2013 21:31:04 Pali Rohár wrote:
> Hello,
> 
> so what do you suggest? Add it to staging for now (or not)?
> 
> On Tuesday 15 October 2013 17:08:39 Hans Verkuil wrote:
> > Hi Pali,
> > 
> > Thanks for the patch, but I am afraid it will need some work
> > to make this acceptable for inclusion into the kernel.
> > 
> > The main thing you need to do is to implement all the
> > controls using the control framework (see
> > Documentation/video4linux/v4l2-controls.txt). Most drivers
> > are by now converted to the control framework, so you will
> > find many examples of how to do this in drivers/media/radio.
> > 
> > The sysfs stuff should be replaced by controls as well. A
> > lot of the RDS support is now available as controls
> > (although there may well be some missing features, but that
> > is easy enough to add). Since the RDS data is actually
> > read() from the device I am not sure whether the RDS
> > properties/controls should be there at all.
> > 
> > Finally this driver should probably be split up into two
> > parts: one v4l2_subdev-based core driver and one platform
> > driver. See e.g. radio-si4713/si4713-i2c.c as a good
> > example. But I would wait with that until the rest of the
> > driver is cleaned up. Then I have a better idea of whether
> > this is necessary or not.
> > 
> > It's also very useful to run v4l2-compliance (available in
> > the v4l-utils.git repo on git.linuxtv.org). That does lots
> > of sanity checks.
> > 
> > Another option is to add the driver as-is to
> > drivers/staging/media, and clean it up bit by bit.
> > 
> > Regards,
> > 
> > 	Hans
> > 
> > On 10/15/2013 04:26 PM, Pali Rohár wrote:
> > > This adds support for the BCM2048 radio module found in
> > > Nokia N900
> > > 
> > > Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@...ia.com>
> > > Signed-off-by: Nils Faerber
> > > <nils.faerber@...nelconcepts.de> Signed-off-by: Joni
> > > Lapilainen <joni.lapilainen@...il.com> Signed-off-by:
> > > Pali Rohár <pali.rohar@...il.com>
> > > ---
> > > 
> > >  drivers/media/radio/Kconfig         |   10 +
> > >  drivers/media/radio/Makefile        |    1 +
> > >  drivers/media/radio/radio-bcm2048.c | 2744
> > >  +++++++++++++++++++++++++++++++++++
> > >  include/media/radio-bcm2048.h       |   30 +
> > >  4 files changed, 2785 insertions(+)
> > >  create mode 100644 drivers/media/radio/radio-bcm2048.c
> > >  create mode 100644 include/media/radio-bcm2048.h

-- 
Pali Rohár
pali.rohar@...il.com

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