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From: Piotr =?iso-8859-2?q?Zi=EAcik?= <kosmo@semihalf.com>
To: "Hongjun Chen" <r66092@freescale.com>
Subject: Re: [PATCH 11/12] mpc5121: Added MPC512x DMA driver.
Date: Tue, 19 May 2009 10:03:42 +0200
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	<200905190937411866001@freescale.com>
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Cc: "linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
	Wolfgang Denk <wd@denx.de>
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Tuesday 19 May 2009 03:37:47 Hongjun Chen wrote:
> Since you have reuse most part of our BSP, why should you reinvent wheel
> for MPC512x DMA? We have one ready DMA driver, which has been used by AC9=
7,
> ATA, VIU etc.
>

Answer is simple. The old one does not fit Linux DMA API. New one uses=20
existing infrastructure which makes DMA engine aviable for existing consume=
rs
in Linux kernel. For example network stack. Support for I/O <-> memory=20
transfers will be added when more consumers arrive.

=2D-=20
Best Regards.
Piotr Zi=EAcik