From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Tomasz Stanislawski <t.stanislaws@samsung.com>,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
airlied@redhat.com, m.szyprowski@samsung.com,
kyungmin.park@samsung.com, sumit.semwal@ti.com,
daeinki@gmail.com, daniel.vetter@ffwll.ch, robdclark@gmail.com,
pawel@osciak.com, linaro-mm-sig@lists.linaro.org,
remi@remlab.net, subashrp@gmail.com, mchehab@redhat.com,
g.liakhovetski@gmx.de, dmitriyz@google.com,
s.nawrocki@samsung.com, k.debski@samsung.com
Subject: Re: [PATCHv8 13/26] v4l: vivi: support for dmabuf importing
Date: Wed, 22 Aug 2012 13:03:34 +0200 [thread overview]
Message-ID: <1420558.oAlJzEsVFr@avalon> (raw)
In-Reply-To: <201208221256.30179.hverkuil@xs4all.nl>
Hi Hans,
On Wednesday 22 August 2012 12:56:30 Hans Verkuil wrote:
> On Tue August 14 2012 17:34:43 Tomasz Stanislawski wrote:
> > This patch enhances VIVI driver with a support for importing a buffer
> > from DMABUF file descriptors.
>
> Thanks for adding DMABUF support to vivi.
>
> What would be great is if DMABUF support is also added to mem2mem_testdev.
> It would make an excellent test case to take the vivi output, pass it
> through mem2mem_testdev, and finally output the image using the gpu, all
> using dmabuf.
>
> It's also very useful for application developers to test dmabuf support
> without requiring special hardware (other than a dmabuf-enabled gpu
> driver).
One important missing feature is support for exporting GPU buffers as dmabuf
file descriptors in the userspace APIs. I'm not sure where that would plug in
the graphics stack, but we probably need at least a Linux-specific OpenGL
extension for that. I've heard from Rob Clark that work was ongoing in that
direction. I believe that
https://wiki.linaro.org/OfficeofCTO/MemoryManagement?action=AttachFile&do=get&target=linux-
video.pdf is also related.
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2012-08-22 11:03 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-14 15:34 [PATCHv8 00/26] Integration of videobuf2 with DMABUF Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 01/26] v4l: Add DMABUF as a memory type Tomasz Stanislawski
2012-08-22 10:27 ` Hans Verkuil
2012-08-22 12:09 ` Tomasz Stanislawski
2012-08-22 12:21 ` Hans Verkuil
2012-08-14 15:34 ` [PATCHv8 02/26] Documentation: media: description of DMABUF importing in V4L2 Tomasz Stanislawski
2012-08-22 10:47 ` Hans Verkuil
2012-09-24 12:17 ` Tomasz Stanislawski
2012-09-25 10:48 ` Hans Verkuil
2012-08-14 15:34 ` [PATCHv8 03/26] v4l: vb2: add support for shared buffer (dma_buf) Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 04/26] v4l: vb: remove warnings about MEMORY_DMABUF Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 05/26] v4l: vb2-dma-contig: Shorten vb2_dma_contig prefix to vb2_dc Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 06/26] v4l: vb2-dma-contig: remove reference of alloc_ctx from a buffer Tomasz Stanislawski
2012-08-15 18:24 ` Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 07/26] v4l: vb2-dma-contig: Reorder functions Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 08/26] v4l: vb2-dma-contig: add support for scatterlist in userptr mode Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 09/26] v4l: vb2: add prepare/finish callbacks to allocators Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 10/26] v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator Tomasz Stanislawski
2012-08-15 18:35 ` Laurent Pinchart
2012-08-15 18:39 ` [Linaro-mm-sig] " Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 11/26] v4l: vb2-dma-contig: add support for dma_buf importing Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 12/26] v4l: vb2-vmalloc: add support for dmabuf importing Tomasz Stanislawski
2012-08-15 18:39 ` Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 13/26] v4l: vivi: " Tomasz Stanislawski
2012-08-22 10:56 ` Hans Verkuil
2012-08-22 11:03 ` Laurent Pinchart [this message]
2012-08-22 11:47 ` Hans Verkuil
2012-09-25 14:41 ` Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 14/26] v4l: s5p-tv: mixer: " Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 15/26] v4l: s5p-fimc: " Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 16/26] v4l: vb2-dma-contig: let mmap method to use dma_mmap_coherent call Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 17/26] Documentation: media: description of DMABUF exporting in V4L2 Tomasz Stanislawski
2012-08-22 11:23 ` Hans Verkuil
2012-08-14 15:34 ` [PATCHv8 18/26] v4l: add buffer exporting via dmabuf Tomasz Stanislawski
2012-08-15 19:08 ` Laurent Pinchart
2012-08-22 11:41 ` Hans Verkuil
2012-08-22 23:39 ` Laurent Pinchart
2012-08-23 6:50 ` Hans Verkuil
2012-09-25 16:30 ` Tomasz Stanislawski
2012-09-26 6:39 ` Hans Verkuil
2012-09-26 9:55 ` Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 19/26] v4l: vb2: " Tomasz Stanislawski
2012-08-22 11:43 ` Hans Verkuil
2012-08-14 15:34 ` [PATCHv8 20/26] v4l: vb2-dma-contig: add support for DMABUF exporting Tomasz Stanislawski
2012-08-21 10:03 ` Laurent Pinchart
2012-08-21 13:47 ` Tomasz Stanislawski
2012-08-21 14:07 ` Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 21/26] v4l: vb2-dma-contig: add reference counting for a device from allocator context Tomasz Stanislawski
2012-08-15 20:04 ` Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 22/26] media: vb2: fail if user ptr buffer is not correctly aligned Tomasz Stanislawski
2012-08-15 20:20 ` Laurent Pinchart
2012-08-14 15:34 ` [PATCHv8 23/26] v4l: vb2: add support for DMA_ATTR_NO_KERNEL_MAPPING Tomasz Stanislawski
2012-08-15 20:44 ` Laurent Pinchart
2012-08-22 11:46 ` Hans Verkuil
2012-08-14 15:34 ` [PATCHv8 24/26] v4l: s5p-fimc: support for dmabuf exporting Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 25/26] v4l: s5p-tv: mixer: " Tomasz Stanislawski
2012-08-14 15:34 ` [PATCHv8 26/26] v4l: s5p-mfc: " Tomasz Stanislawski
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