linux-kernel - Re: [PATCH 2/5] MFD: ti_tscadc: Add support for TI's TSC/ADC MFDevice

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Message-ID: <20120919153005.GG28670@sortiz-mobl>
Date:	Wed, 19 Sep 2012 17:30:05 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	"Patil, Rachna" <rachna@...com>
Cc:	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	linux-iio@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Dmitry Torokhov <dtor@...l.ru>,
	Jonathan Cameron <jic23@....ac.uk>
Subject: Re: [PATCH 2/5] MFD: ti_tscadc: Add support for TI's TSC/ADC MFDevice

Hi Rachna

A couple of comments:

On Thu, Aug 23, 2012 at 04:19:57PM +0530, Patil, Rachna wrote:
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index d1facef..81eb815 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -94,6 +94,15 @@ config MFD_TI_SSP
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called ti-ssp.
>  
> +config MFD_TI_TSCADC
> +	tristate "TI ADC / Touch Screen chip support"
> +	depends on ARCH_OMAP2PLUS
What makes it OMAP2PLUS or even ARCH specific at all ?


> +static unsigned int tscadc_readl(struct ti_tscadc_dev *tsadc, unsigned int reg)
> +{
> +	return readl(tsadc->tscadc_base + reg);
> +}
> +
> +static void tscadc_writel(struct ti_tscadc_dev *tsadc, unsigned int reg,
> +					unsigned int val)
> +{
> +	writel(val, tsadc->tscadc_base + reg);
> +}
Please use regmap MMIO for that stuff. It won't make the code shorter, but
more robust.

Cheers,
Samuel.

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