linux-kernel - Re: [PATCH 1/5] capemgr: Beaglebone DT overlay based cape manager

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Message-Id: <379B16EC-BFAA-4C27-8321-E7133C03368D@antoniou-consulting.com>
Date:	Mon, 7 Jan 2013 22:13:30 +0200
From:	Pantelis Antoniou <panto@...oniou-consulting.com>
To:	Tony Lindgren <tony@...mide.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>, Jon Loeliger <jdl@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	David Gibson <david@...son.dropbear.id.au>,
	Benoit Cousson <b-cousson@...com>,
	Mitch Bradley <wmb@...mworks.com>,
	Alan Tull <atull@...era.com>, Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-omap@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matt Porter <mporter@...com>, Russ Dill <Russ.Dill@...com>,
	Koen Kooi <koen@...inion.thruhere.net>,
	Joel A Fernandes <agnel.joel@...il.com>,
	Rob Clark <robdclark@...il.com>,
	Jason Kridner <jkridner@...gleboard.org>,
	Matt Ranostay <mranostay@...il.com>
Subject: Re: [PATCH 1/5] capemgr: Beaglebone DT overlay based cape manager

Hi Tony,

On Jan 7, 2013, at 10:09 PM, Tony Lindgren wrote:

> * Pantelis Antoniou <panto@...oniou-consulting.com> [130107 10:54]:
>> A cape loader based on DT overlays and DT objects.
>> 
>> Beaglebone cape manager implementation.
>> 
>> Signed-off-by: Pantelis Antoniou <panto@...oniou-consulting.com>
>> ---
>> arch/arm/mach-omap2/Kconfig            |    2 +
>> drivers/misc/Kconfig                   |    2 +
>> drivers/misc/Makefile                  |    1 +
>> drivers/misc/cape/Kconfig              |    5 +
>> drivers/misc/cape/Makefile             |    5 +
>> drivers/misc/cape/beaglebone/Kconfig   |   11 +
>> drivers/misc/cape/beaglebone/Makefile  |    5 +
>> drivers/misc/cape/beaglebone/capemgr.c | 1835 ++++++++++++++++++++++++++++++++
> 
> The driver should probably be in drivers/bus?
> 

It was a bus on the previous iteration and there was a flame storm of epic proportions.

It is not a bus at all now, it's just a device loader; there are no
bus constructs at all. I am at a loss to classify it really, so drivers/misc
where every misfit ends up sounded OK.

I'm open to suggestions though.

>> 8 files changed, 1866 insertions(+)
>> create mode 100644 drivers/misc/cape/Kconfig
>> create mode 100644 drivers/misc/cape/Makefile
>> create mode 100644 drivers/misc/cape/beaglebone/Kconfig
>> create mode 100644 drivers/misc/cape/beaglebone/Makefile
>> create mode 100644 drivers/misc/cape/beaglebone/capemgr.c
>> 
>> diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
>> index 41b581f..f0c2eab 100644
>> --- a/arch/arm/mach-omap2/Kconfig
>> +++ b/arch/arm/mach-omap2/Kconfig
>> @@ -18,6 +18,8 @@ config ARCH_OMAP2PLUS_TYPICAL
>> 	select TWL4030_CORE if ARCH_OMAP3 || ARCH_OMAP4
>> 	select TWL4030_POWER if ARCH_OMAP3 || ARCH_OMAP4
>> 	select VFP
>> +	select OF_OVERLAY
>> +	select OF_RESOLVE
>> 	help
>> 	  Compile a kernel suitable for booting most boards
> 
> You should just make the driver depend on OF_OVERLAY and
> OF_RESOLVE as most SoCs won't need this. Then we can select
> it in the omap2plus_defconfig.
> 

OK

> Regards,
> 
> Tony  

Regards

-- Pantelis

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