From: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
To: video4linux-list@redhat.com
Cc: video4linux-list@redhat.com, linux-sh@vger.kernel.org
Subject: Re: [PATCH 06/07] videobuf: Add physically contiguous queue code
Date: Wed, 02 Jul 2008 10:43:19 +0300 [thread overview]
Message-ID: <486B3197.5000100@teltonika.lt> (raw)
In-Reply-To: <20080701124735.30446.89320.sendpatchset@rx1.opensource.se>
Heh. I have written almost identical videobuf driver also :)
You should run checkpatch.pl on this patch to correct some style
problems. Since your version is a little bit more generic than mine:
Acked-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Magnus Damm wrote:
> This patch adds support for videobuf queues made from physically
> contiguous memory. Useful for hardware such as the SuperH Mobile CEU
> which doesn't support scatter gatter bus mastering.
>
> Since it may be difficult to allocate large chunks of physically
> contiguous memory after some uptime due to fragmentation, this code
> allocates memory using dma_alloc_coherent(). Architectures supporting
> dma_declare_coherent_memory() can easily avoid fragmentation issues
> by using dma_declare_coherent_memory() to force dma_alloc_coherent()
> to allocate from a certain pre-allocated memory area.
>
> Signed-off-by: Magnus Damm <damm@igel.co.jp>
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next prev parent reply other threads:[~2008-07-02 7:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-01 12:46 [PATCH 00/07] soc_camera: SuperH Mobile CEU support Magnus Damm
2008-07-01 12:46 ` [PATCH 01/07] soc_camera: Remove default spinlock operations Magnus Damm
2008-07-01 12:46 ` [PATCH 02/07] soc_camera: Let the host select videobuf_queue type Magnus Damm
2008-07-01 20:02 ` Guennadi Liakhovetski
2008-07-02 2:50 ` Magnus Damm
2008-07-02 7:27 ` Paulius Zaleckas
2008-07-01 12:47 ` [PATCH 03/07] soc_camera: Remove vbq_ops and msize Magnus Damm
2008-07-01 12:47 ` [PATCH 04/07] soc_camera: Remove unused file lock pointer Magnus Damm
2008-07-01 12:47 ` [PATCH 05/07] soc_camera: Add 16-bit bus width support Magnus Damm
2008-07-01 12:47 ` [PATCH 06/07] videobuf: Add physically contiguous queue code Magnus Damm
2008-07-02 7:43 ` Paulius Zaleckas [this message]
[not found] ` <aec7e5c30807020232j1181ba9s43bc0e6920b18733@mail.gmail.com>
2008-07-02 10:42 ` Paulius Zaleckas
2008-07-04 9:08 ` Paulius Zaleckas
2008-07-01 12:47 ` [PATCH 07/07] sh_mobile_ceu_camera: Add SuperH Mobile CEU driver Magnus Damm
2008-07-01 20:07 ` Guennadi Liakhovetski
2008-07-02 3:08 ` Magnus Damm
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