linux-kernel - Re: [PATCH 1/2] mfd: Factor out WM831x I2C I/O from the core driver

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Date:	Tue, 19 Oct 2010 13:15:54 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH 1/2] mfd: Factor out WM831x I2C I/O from the core driver

Hi Mark,

On Fri, Oct 08, 2010 at 02:23:22PM -0700, Mark Brown wrote:
> diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
> index 1e4d78a..546db5c 100644
> --- a/arch/arm/mach-s3c64xx/Kconfig
> +++ b/arch/arm/mach-s3c64xx/Kconfig
> @@ -185,6 +185,7 @@ config SMDK6410_WM1192_EV1
>  	select REGULATOR_WM831X
>  	select S3C24XX_GPIO_EXTRA64
>  	select MFD_WM831X
> +	select MFD_WM831X_I2C
>  	help
>  	  The Wolfson Microelectronics 1192-EV1 is a WM831x based PMIC
>  	  daughtercard for the Samsung SMDK6410 reference platform.
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 6c6b9f0..608a277 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -315,14 +315,18 @@ config MFD_WM8400
>  	  the functionality of the device.
>  
>  config MFD_WM831X
> -	bool "Support Wolfson Microelectronics WM831x/2x PMICs"
> +	bool
> +	depends on GENERIC_HARDIRQS
> +
> +config MFD_WM831X_I2C
> +	bool "Support Wolfson Microelectronics WM831x/2x PMICs with I2C"
>  	select MFD_CORE
I think we should select MFD_WM831X here as well otherwise there's nothing
preventing us from building the I2C or the SPI part without the core one. And
that leads to a build breakage.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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