linux-kernel - Re: [PATCH 3/5] drivers/misc: rf/ad9361: AD9361 device driver for Radio phy

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Date:	Wed, 19 Jun 2013 07:30:42 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	akhil.goyal@...escale.com, arnd@...db.de,
	linux-kernel@...r.kernel.org, pankaj.chauhan@...escale.com,
	"Getz, Robin" <robin.getz@...log.com>,
	"Hennerich, Michael" <Michael.Hennerich@...log.com>,
	Lars-Peter Clausen <lars-peter.clausen@...log.com>
Subject: Re: [PATCH 3/5] drivers/misc: rf/ad9361: AD9361 device driver for
 Radio phy

On Wed, Jun 19, 2013 at 02:57:40PM +0200, Lars-Peter Clausen wrote:
> On 06/17/2013 10:09 AM, akhil.goyal@...escale.com wrote:
> > From: Akhil Goyal <akhil.goyal@...escale.com>
> > 
> > AD9361 is a radio phy(RFIC) for radio networks. This phy
> > can support LTE-FDD/LTE-TDD and WCDMA networks. The RFIC
> > can convert the analog radio signals from air to digital
> > IQ samples.
> > 
> > AD9361 is controlled via an SPI bus and all the register
> > read/ write can be performed via SPI transactions.
> > 
> > Driver provides various operations for configuring and
> > controlling the AD PHY. These can be controlled from the
> > user space via the rfdev framework.
> > 
> > Driver also binds itself to one of AIC lane using RF framework.
> > The combination of AIC lane and PHY connected to it works
> > as one RF device.
> > 
> > Signed-off-by: Shaveta Leekha <shaveta@...escale.com>
> > Signed-off-by: Pankaj Chauhan <pankaj.chauhan@...escale.com>
> > Signed-off-by: Bhaskar Upadhaya <bhaskar.upadhaya@...escale.com>
> > Signed-off-by: Akhil Goyal <akhil.goyal@...escale.com>
> 
> Hi,
> 
> This is interesting. We at Analog Devices are currently also working on a
> driver for this part. We are using the Linux Industrial IO (IIO) framework
> though, since the AD9361 is more or less a multifunction device implementing
> different functions already covered by the IIO framework, like ADCs, DACs,
> clock chips and so on.

That's the "proper" api for this, not a bunch of chip-custom ioctls that
aren't documented anywhere.

thanks,

greg k-h
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