From: Jarkko Nikula <jarkko.nikula@nokia.com>
To: ext chandra shekhar <x0044955@ti.com>
Cc: linux-omap@vger.kernel.org
Subject: Re: [PATCH 1/2] McBSP DMA support for 34xx
Date: Thu, 28 Aug 2008 13:52:02 +0300 [thread overview]
Message-ID: <20080828135202.657264e6.jarkko.nikula@nokia.com> (raw)
In-Reply-To: <51857.192.168.10.89.1219911960.squirrel@dbdmail.itg.ti.com>
On Thu, 28 Aug 2008 13:56:00 +0530 (IST)
"ext chandra shekhar" <x0044955@ti.com> wrote:
> This patch supports DMA chaining mode and one time configuration for
> entire transfer to improve performance.
> Signed-off-by: chandra shekhar <x0044955@ti.com>
> ---
> arch/arm/mach-omap2/mcbsp.c | 702 ++++++++++++++++++++++++++++
> +++++++++- arch/arm/plat-omap/mcbsp.c | 19 -
> include/asm-arm/arch-omap/mcbsp.h | 127 +++++-
> 3 files changed, 811 insertions(+), 37 deletions(-)
>
Hi
What's the expected use case for DMA chaining mode or existing driver
which would get improved performance? There should have some reason why
this amount of new lines should be added.
Also ideally this should cover also OMAP1's from 16xx onward since they
can link DMA channels together as well?
Jarkko
next prev parent reply other threads:[~2008-08-28 10:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-28 8:26 [PATCH 1/2] McBSP DMA support for 34xx chandra shekhar
2008-08-28 10:10 ` Felipe Balbi
2008-08-28 10:52 ` Jarkko Nikula [this message]
2008-08-28 11:20 ` shekhar, chandra
2008-09-09 16:31 ` Tony Lindgren
2008-09-10 10:17 ` shekhar, chandra
2008-09-10 11:14 ` Jarkko Nikula
2008-09-10 11:44 ` shekhar, chandra
2008-09-24 9:28 ` Tony Lindgren
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