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Date:	Fri, 19 Mar 2010 10:13:10 +0100
From:	Wolfgang Grandegger <wg@...ndegger.com>
To:	"Ira W. Snyder" <iws@...o.caltech.edu>
CC:	linux-kernel@...r.kernel.org, socketcan-core@...ts.berlios.de,
	netdev@...r.kernel.org, sameo@...ux.intel.com
Subject: Re: [PATCH 1/3] mfd: add support for Janz CMOD-IO PCI MODULbus Carrier
 Board

Ira W. Snyder wrote:
> The Janz CMOD-IO PCI MODULbus carrier board is a PCI to MODULbus bridge,
> which may host many different types of MODULbus daughterboards, including
> CAN and GPIO controllers.
> 
> Signed-off-by: Ira W. Snyder <iws@...o.caltech.edu>
> Cc: Samuel Ortiz <sameo@...ux.intel.com>

You can add my "Reviewed-by: Wolfgang Grandegger <wg@...ndegger.com>".

Just one concern:

> ---
>  drivers/mfd/Kconfig       |    8 +
>  drivers/mfd/Makefile      |    1 +
>  drivers/mfd/janz-cmodio.c |  339 +++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/janz.h  |   54 +++++++
>  4 files changed, 402 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/mfd/janz-cmodio.c
>  create mode 100644 include/linux/mfd/janz.h
> 
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 8782978..f1858d7 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -27,6 +27,14 @@ config MFD_SM501_GPIO
>  	 lines on the SM501. The platform data is used to supply the
>  	 base number for the first GPIO line to register.
>  
> +config MFD_JANZ_CMODIO
> +	tristate "Support for Janz CMOD-IO PCI MODULbus Carrier Board"
> +	---help---
> +	  This is the core driver for the Janz CMOD-IO PCI MODULbus
> +	  carrier board. This device is a PCI to MODULbus bridge which may
> +	  host many different types of MODULbus daughterboards, including
> +	  CAN and GPIO controllers.
> +
>  config MFD_ASIC3
>  	bool "Support for Compaq ASIC3"
>  	depends on GENERIC_HARDIRQS && GPIOLIB && ARM
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index e09eb48..e8fa905 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -3,6 +3,7 @@
>  #
>  
>  obj-$(CONFIG_MFD_SM501)		+= sm501.o
> +obj-$(CONFIG_MFD_JANZ_CMODIO)	+= janz-cmodio.o
>  obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
>  obj-$(CONFIG_MFD_SH_MOBILE_SDHI)		+= sh_mobile_sdhi.o
>  
> diff --git a/drivers/mfd/janz-cmodio.c b/drivers/mfd/janz-cmodio.c
> new file mode 100644
> index 0000000..914280e
> --- /dev/null
> +++ b/drivers/mfd/janz-cmodio.c
> @@ -0,0 +1,339 @@
> +/*
> + * Janz CMOD-IO MODULbus Carrier Board PCI Driver
> + *
> + * Copyright (c) 2010 Ira W. Snyder <iws@...o.caltech.edu>
> + *
> + * Lots of inspiration and code was copied from drivers/mfd/sm501.c
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/pci.h>
> +#include <linux/interrupt.h>
> +#include <linux/delay.h>
> +#include <linux/platform_device.h>
> +
> +#include <linux/mfd/janz.h>
> +
> +#define DRV_NAME "janz-cmodio"
> +
> +/* Size of each MODULbus module in PCI BAR4 */
> +#define CMODIO_MODULBUS_SIZE	0x200
> +
> +/* Maximum number of MODULbus modules on a CMOD-IO carrier board */
> +#define CMODIO_MAX_MODULES	4
> +
> +/* Module Parameters */
> +static unsigned int num_modules = CMODIO_MAX_MODULES;
> +static unsigned char *modules[CMODIO_MAX_MODULES] = {
> +	"janz-ican3",
> +	"janz-ican3",
> +	"",
> +	"janz-ttl",
> +};

This is probably not a good default but just your private configuration.

Wolfgang.
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