Re: [PATCH] dmaengine: sh: Add support DMA-Engine driver for DMA ofSuperH

From: Nobuhiro Iwamatsu
Date: Thu Mar 12 2009 - 21:03:00 EST


Hi, Matt.

Thank you for your review.

Matt Fleming wrote:
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@xxxxxxxxxxxxxxxxx>

[...]

+/* 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.

OK, I fix it.
+
+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

Oops, thank you.

I fix your check point and resend patch.

Best regards,
Nobuhiro
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