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Date: Mon, 14 Mar 2011 17:11:11 +0300
From: Sergei Shtylyov <sshtylyov@mvista.com>
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To: Manjunath Hadli <manjunath.hadli@ti.com>
CC: LMML <linux-media@vger.kernel.org>,
	Kevin Hilman <khilman@deeprootsystems.com>,
	LAK <linux-arm-kernel@lists.infradead.org>,
	Sekhar Nori <nsekhar@ti.com>,
	dlos <davinci-linux-open-source@linux.davincidsp.com>,
	Mauro Carvalho Chehab <mchehab@redhat.com>
Subject: Re: [PATCH 2/7] davinci: eliminate use of IO_ADDRESS() on sysmod
References: <1300110947-16229-1-git-send-email-manjunath.hadli@ti.com>
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Hello.

Manjunath Hadli wrote:

> Current devices.c file has a number of instances where
> IO_ADDRESS() is used for system module register
> access. Eliminate this in favor of a ioremap()
> based access.

> Consequent to this, a new global pointer davinci_sysmodbase
> has been introduced which gets initialized during
> the initialization of each relevant SoC

> Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
[...]

> diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
> index d3b2040..66a948d 100644
> --- a/arch/arm/mach-davinci/devices.c
> +++ b/arch/arm/mach-davinci/devices.c
[...]
> @@ -210,12 +218,12 @@ void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
>  			davinci_cfg_reg(DM355_SD1_DATA2);
>  			davinci_cfg_reg(DM355_SD1_DATA3);
>  		} else if (cpu_is_davinci_dm365()) {
> -			void __iomem *pupdctl1 =
> -				IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);
> -
>  			/* Configure pull down control */
> -			__raw_writel((__raw_readl(pupdctl1) & ~0xfc0),
> -					pupdctl1);
> +			void __iomem *pupdctl1 = DAVINCI_SYSMODULE_VIRT(0x7c);
> +			unsigned v;
> +
> +			v = readl(pupdctl1);
> +			writel(v & ~0xfc0, pupdctl1);

    Why are you changing from __raw_{readl|writel}() to {readl|writel}()? You 
don't mention it in the change log...

WBR, Sergei