From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matt Fleming <matt@console-pimps.org>
Date: Thu, 12 Mar 2009 11:22:31 +0000
Subject: Re: [PATCH] dmaengine: sh: Add support DMA-Engine driver for DMA
Message-Id: <20090312112231.GE1475@console-pimps.org>
List-Id: <linux-sh.vger.kernel.org>
References: <49B8AF67.8080309@renesas.com>
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To: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Cc: Linux-sh <linux-sh@vger.kernel.org>, linux-kernel@vger.kernel.org, maciej.sosnowski@intel.com, dan.j.williams@intel.com, Paul Mundt <lethal@linux-sh.org>

On Thu, Mar 12, 2009 at 03:44:55PM +0900, Nobuhiro Iwamatsu wrote:
> This supports DMA-Engine driver for DMA of SuperH.
> This supported all DMA channels, and it was tested in SH7722/SH7780.
> This can not use with SH DMA API and can control this in Kconfig.
> 

I was working on support for this, but fortunately for me you beat me
to a finished implementation ;-)

The code looks good to me. Just a few (very very) minor nits.

Reviewed-by: Matt Fleming <matt@console-pimps.org>

[...]

> 
> +/* for dma engine */
> +/* mode */
> +#define SHDMA_MIX_IRQ	(1 << 1)

The proper multi-line kernel comment style is

	/*
	 *
	 */

though this comment can all fit on one line.

> +
> +static void dmae_init(struct sh_dmae_chan *sh_chan)
> +{
> +	u32 chcr = RS_DEFAULT; /* default is DUAL mode */
> +	sh_dmae_writel(sh_chan, chcr, CHCR);
> +}
> +
> +/*
> + * Reset DMA controler

controler -> controller

Good work!