[PATCH v2 00/16] omapdrm: Implement dma_buf import

Tomi Valkeinen tomi.valkeinen at ti.com
Wed Dec 16 08:18:18 PST 2015


Hi Laurent,

On 14/12/15 22:39, Laurent Pinchart wrote:
> Hello,
> 
> This patch series implements support for dma_buf import in the omapdrm driver.
> The patches are based on top of the latest drm-next branch and can be found in
> my git tree at
> 
>         git://linuxtv.org/pinchartl/fbdev.git omapdrm/dmabuf-import
> 
> The first two patches are unrelated fixes and enhancements, but I've included
> them in the series to avoid merge conflicts.
> 
> The next 13 patches are miscellaneous fixes, cleanups and refactoring to
> prepare for patch 16/16 that implements dma_buf import.
> 
> The code has been successfully tested with the vivid driver as an exporter,
> using a hacked version that uses uncached CPU mappings in vivid when filling
> the buffers. vivid is a test driver that generates a test pattern using the
> CPU with cached mappings by default, resulting in corruption on the screen due
> to missing cache handling. As the problem doesn't occur when sharing buffers
> not touched by the CPU or touched through uncached mappings only, it will be
> addressed separately.

I've picked up these patches to my omapdrm-4.5 branch:

drm: omapdrm: move omap_plane_reset()
drm: omapdrm: Fix plane state free in plane reset handler
drm: omapdrm: Make fbdev emulation optional
drm: omapdrm: gem: Remove unused function prototypes
drm: omapdrm: gem: Remove forward declarations
drm: omapdrm: gem: Group functions by purpose
drm: omapdrm: gem: Move global usergart variable to omap_drm_private
drm: omapdrm: gem: Mask out private flags passed from userspace
drm: omapdrm: gem: Free the correct memory object
drm: omapdrm: gem: Fix GEM object destroy in error path
drm: omapdrm: gem: Don't free mmap offset twice
drm: omapdrm: gem: Simplify error handling when creating GEM object
drm: omapdrm: gem: Remove check for impossible condition

I did split the "Fix plane state free in plane reset handler" into two,
moving the function first. And as I dropped few patches from between the
others, they're not exactly as they were in your series.

The remaining patches are:

drm: omapdrm: gem: Remove omap_drm_private has_dmm field
drm: omapdrm: gem: Clean up GEM objects memory flags
drm: omapdrm: gem: Refactor GEM object allocation
drm: omapdrm: gem: Implement dma_buf import

Those are more complex, and I haven't fully reviewed them yet. I wanted
to get the bulk of the patches already, so that I can ensure we get at
least those to 4.5.

 Tomi

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