[PATCH v2 3/4] [NOT FOR REVIEW] videobuf2-dc: Let drivers specify DMA attrs

[Jung Zhao]

Hi Doug,
Thanks for your work. I will fix this mistake.

2016-02-18 0:12 GMT+08:00 Doug Anderson <dianders at chromium.org>:
> Hi,
>
> On Wed, Feb 17, 2016 at 2:42 AM, Jung Zhao <jung.zhao at rock-chips.com> wrote:
>> From: Tomasz Figa <tfiga at chromium.org>
>>
>> DMA allocations might be subject to certain reqiurements specific to the
>> hardware using the buffers, such as availability of kernel mapping (for
>> contents fix-ups in the driver). The only entity that knows them is the
>> driver, so it must share this knowledge with vb2-dc.
>>
>> This patch extends the alloc_ctx initialization interface to let the
>> driver specify DMA attrs, which are then stored inside the allocation
>> context and will be used for all allocations with that context.
>>
>> As a side effect, all dma_*_coherent() calls are turned into
>> dma_*_attrs() calls, because the attributes need to be carried over
>> through all DMA operations.
>>
>> Signed-off-by: Tomasz Figa <tfiga at chromium.org>
>> Signed-off-by: Jung Zhao <jung.zhao at rock-chips.com>
>> ---
>> Changes in v2: None
>>
>>  drivers/media/v4l2-core/videobuf2-dma-contig.c | 33 +++++++++++++++++---------
>>  include/media/videobuf2-dma-contig.h           | 11 ++++++++-
>>  2 files changed, 32 insertions(+), 12 deletions(-)
>
> This patch is already present in linuxnext.  I submitted it to Russell
> King's Patch Tracking System a bit ago and got notice that it landed.
> Checking linuxnext today I see:
>
> ccc66e738252 ARM: 8508/2: videobuf2-dc: Let drivers specify DMA attrs
>
> -Doug
>
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-- 
Best Regards,
Jung

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福州瑞芯微电子有限公司 (Rockchip)
赵俊 (Jung Zhao)
算法工程师 (Algorithm Engineer)
+86-591-83991906-8944
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