Thread (17 messages) 17 messages, 3 authors, 2012-11-02

[PATCH 3/6] ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h

From: laurent.pinchart@ideasonboard.com (Laurent Pinchart)
Date: 2012-10-25 20:22:00
Also in: linux-media, linux-omap

Hi Tony,

On Thursday 25 October 2012 09:56:44 Tony Lindgren wrote:
* Laurent Pinchart [off-list ref] [121025 01:39]:
quoted
I still think you should split this in two files, omap-iommu.h and omap-
iovmm.h. The later would just be arch/arm/plat-omap/include/plat/iovmm.h
moved to include/linux.h.
Can you please explain a bit more why you're thinking a separate
omap-iovmm.h is needed in addtion to omap-iommu.h?
The IOVMM API is layered top of the IOMMU API. It's really a separate API, so 
two header files make sense. This patch creates a hybrid omap-iommu.h header 
with mixed definitions, it just doesn't feel right :-) I won't insist for a 
split though, if you think it's better to have a single header we can keep it 
that way.
My reasoning for not adding it is that neither intel nor amd needs
more than intel-iommu.h and amd-iommu.h. And hopefully the iommu
framework will eventually provide the API needed. And I'd rather
not be the person introducing this second new file into
include/linux :)

Joerg and Ohad, do you have any opinions on this?
-- 
Regards,

Laurent Pinchart
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