linux-kernel - Re: [PATCH v4 1/4] drivers/mfd/menf21bmc: introduce MEN 14F021P00 BMC MFD Core driver

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Date:	Thu, 21 Aug 2014 15:57:08 +0200
From:	Andreas Werner <andreas.werner@....de>
To:	Lee Jones <lee.jones@...aro.org>
CC:	Andreas Werner <andreas.werner@....de>,
	<linux-kernel@...r.kernel.org>, <sameo@...ux.intel.com>,
	<wim@...ana.be>, <linux-watchdog@...r.kernel.org>,
	<cooloney@...il.com>, <rpurdie@...ys.net>,
	<linux-leds@...r.kernel.org>, <jdelvare@...e.de>,
	<linux@...ck-us.net>, <lm-sensors@...sensors.org>
Subject: Re: [PATCH v4 1/4] drivers/mfd/menf21bmc: introduce MEN 14F021P00
 BMC MFD Core driver

On Thu, Aug 21, 2014 at 12:30:46PM +0100, Lee Jones wrote:
> On Wed, 13 Aug 2014, Andreas Werner wrote:
> > The MEN 14F021P00 Board Management Controller provides an
> > I2C interface to the host to access the feature implemented in the BMC.
> > The BMC is a PIC Microntroller assembled on CPCI Card from MEN Mikroelektronik
> > and on a few Box/Display Computer.
> > 
> > Added MFD Core driver, supporting the I2C communication to the device.
> > 
> > The MFD driver currently supports the following features:
> >  	- Watchdog
> >  	- LEDs
> > 	- Hwmon (voltage monitoring)
> > 
> > Signed-off-by: Andreas Werner <andreas.werner@....de>
> > ---
> >  drivers/mfd/Kconfig     |  12 +++++
> >  drivers/mfd/Makefile    |   1 +
> >  drivers/mfd/menf21bmc.c | 132 ++++++++++++++++++++++++++++++++++++++++++++++++
> >  3 files changed, 145 insertions(+)
> >  create mode 100644 drivers/mfd/menf21bmc.c
> > 
> > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> > index b8d9ca0..bf155b9 100644
> > --- a/drivers/mfd/Kconfig
> > +++ b/drivers/mfd/Kconfig
> > @@ -453,6 +453,18 @@ config MFD_MAX8998
> >  	  additional drivers must be enabled in order to use the functionality
> >  	  of the device.
> >  
> > +config MFD_MENF21BMC
> > +	tristate "MEN 14F021P00 Board Management Controller Support"
> > +	depends on I2C=y
> 
> Why must I2C be built-in?

Sorry my mistake, I2C must not be built in.

> 
> > +	select MFD_CORE
> > +	help
> > +	  Say yes here to add support for the MEN 14F021P00 BMC
> > +	  which is a Board Management Controller connected to the I2C bus.
> > +	  The device supports multiple sub-devices like LED, HWMON  and WDT.
> > +	  This driver provides common support for accessing the devices;
> > +	  additional drivers must be enabled in order to use the
> > +	  functionality of the BMC device.
> > +
> 
> Apart from that the patch looks good to me.
> 
> I'm assuming this can go in via the MFD tree by itself?

Yes why not.
Do you want to have a single patch for the MFD or
is it better to wait for the other Subsystem maintainer that I 
can resend a patch v5?


Regards
Andy

> 
> Acked-by: Lee Jones <lee.jones@...aro.org>
> 
> -- 
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog
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