On 08/06/2012 01:58 PM, Michal Nazarewicz wrote:
>
> Tomasz Stanislawski writes:
>> I recommend to change the semantics for unlimited number of segments
>> from 'value 0' to:
>>
>> #define DMA_SEGMENTS_COUNT_UNLIMITED ((unsigned lon
This patch adds reference counting on a module that exports dma-buf and
implements its operations. This prevents the module from being unloaded while
DMABUF file is in use.
Signed-off-by: Tomasz Stanislawski
---
Documentation/dma-buf-sharing.txt |3 ++-
drivers/base/dma-buf.c
Hi Laurent,
On 08/08/2012 03:35 PM, Laurent Pinchart wrote:
> Hi Tomasz,
>
> Thanks for the patch.
>
> On Wednesday 08 August 2012 12:17:41 Tomasz Stanislawski wrote:
>> This patch adds reference counting on a module that exports dma-buf and
>> implements its op
This patch adds reference counting on a module that exported dma-buf and
implements its operations. This prevents the module from being unloaded while
DMABUF file is in use.
Signed-off-by: Tomasz Stanislawski
Acked-by: Sumit Semwal
Acked-by: Daniel Vetter
CC: linux-...@vger.kernel.org
This patch sets owner field in DMABUF operations for all DMABUF exporters in
DRM subsystem. This prevents an exporting module from being unloaded while
exported DMABUF descriptor is in use.
Signed-off-by: Tomasz Stanislawski
Acked-by: Sumit Semwal
Acked-by: Daniel Vetter
---
drivers/gpu/drm
Hello,
This patchset adds reference counting for an exporter module to DMABUF
framework. Moreover, it adds setup of an owner field for exporters in DRM
subsystem.
v1: Original
v2:
- split patch into DMABUF and DRM part
- allow owner to be NULL
Regards,
Tomasz Stanislawski
Tomasz
Hi Greg,
On 08/09/2012 04:23 PM, Greg KH wrote:
> On Thu, Aug 09, 2012 at 11:36:21AM +0200, Tomasz Stanislawski wrote:
>> This patch adds reference counting on a module that exported dma-buf and
>> implements its operations. This prevents the module from being unloaded while
>&
From: Sumit Semwal
Adds DMABUF memory type to v4l framework. Also adds the related file
descriptor in v4l2_plane and v4l2_buffer.
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
Acked-by: Laurent
ERNEL_MAPPING
Sumit Semwal (4):
v4l: Add DMABUF as a memory type
v4l: vb2: add support for shared buffer (dma_buf)
v4l: vb: remove warnings about MEMORY_DMABUF
v4l: vb2-dma-contig: add support for dma_buf importing
Tomasz Stanislawski (15):
Documentation: media: description of DMABUF im
This patch adds description and usage examples for importing
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml |4 +
Documentation/DocBook/media/v4l/io.xml
sample allocator of
dma-buf shared buffer is given at [1]]
[1]: Rob Clark's DRM:
https://github.com/robclark/kernel-omap4/commits/drmplane-dmabuf
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
From: Sumit Semwal
Adding DMABUF memory type causes videobuf to complain about not using it
in some switch cases. This patch removes these warnings.
Signed-off-by: Sumit Semwal
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf-core.c |4
1 file changed, 4 insertions(+)
dif
From: Laurent Pinchart
Signed-off-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 36 ++--
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/media/video/videobuf2-dma-contig.c
ind
This patch removes a reference to alloc_ctx from an instance of a DMA
contiguous buffer. It helps to avoid a risk of a dangling pointer if the
context is released while the buffer is still valid. Moreover it removes one
dereference step while accessing a device structure.
Signed-off-by: Tomasz
From: Laurent Pinchart
Group functions by buffer type.
Signed-off-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 92
1 file changed, 54 insertions(+), 38 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/media
From: Marek Szyprowski
This patch adds support for prepare/finish callbacks in VB2 allocators. These
callback are used for buffer flushing.
Signed-off-by: Marek Szyprowski
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-core.c | 11 +++
include/media/videobuf2-core.h
Seung-Woo Kim
.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 226 ++--
1 file changed, 210 insertions(+), 16 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma
From: Marek Szyprowski
Add prepare/finish callbacks to vb2-dma-contig allocator.
Signed-off-by: Marek Szyprowski
---
drivers/media/video/videobuf2-dma-contig.c | 24
1 file changed, 24 insertions(+)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/
]
Signed-off-by: Tomasz Stanislawski
[integration with refactored dma-contig allocator]
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 120 +++-
1 file changed, 118 insertions(+), 2 deletions(-)
diff --git a/drivers/media/video
This patch adds support for importing DMABUF files for
vmalloc allocator in Videobuf2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/videobuf2-vmalloc.c | 56 +++
1 file changed, 56 insertions(+)
diff --git a/drivers
This patch enhances VIVI driver with a support for importing a buffer
from DMABUF file descriptors.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/Kconfig |1 +
drivers/media/video/vivi.c |2 +-
2 files changed, 2 insertions(+), 1 deletion
This patch enhances s5p-tv with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/s5p-tv/Kconfig |1 +
drivers/media/video/s5p-tv/mixer_video.c |2 +-
2 files changed, 2
This patch enhances s5p-fimc with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Sylwester Nawrocki
---
drivers/media/video/s5p-fimc/Kconfig|1 +
drivers/media/video/s5p-fimc/fimc-capture.c
From: Marek Szyprowski
Let mmap method to use dma_mmap_coherent call. Moreover, this patch removes
vb2_mmap_pfn_range from videobuf2 helpers as it was suggested by Laurent
Pinchart. The function is no longer used in vb2 code.
Signed-off-by: Marek Szyprowski
Signed-off-by: Tomasz Stanislawski
This patch adds extension to videobuf2-core. It allow to export a mmap buffer
as a file descriptor.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-core.c | 67 ++
include/media
This patch adds extension to V4L2 api. It allow to export a mmap buffer as file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on success.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video
This patch adds support for exporting a dma-contig buffer using
DMABUF interface.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/videobuf2-dma-contig.c | 204
1 file changed, 204 insertions(+)
diff --git a/drivers/media
descriptor(s). The device pointer kept in a buffer must be valid for the
whole buffer's lifetime. Therefore MMAP buffers should take a reference to the
device to avoid risk of dangling pointers.
Signed-off-by: Tomasz Stanislawski
---
drivers/media/video/videobuf2-dma-contig.c |5 +++
From: Marek Szyprowski
Signed-off-by: Marek Szyprowski
---
drivers/media/video/videobuf2-dma-contig.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/media/video/videobuf2-dma-contig.c
index d44766e..11f4a46 100644
--- a/dr
From: Marek Szyprowski
Signed-off-by: Marek Szyprowski
---
drivers/media/video/atmel-isi.c |2 +-
drivers/media/video/blackfin/bfin_capture.c |2 +-
drivers/media/video/marvell-ccic/mcam-core.c |3 ++-
drivers/media/video/mx2_camera.c |2 +-
drivers/med
This patch enhances s5p-fimc with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/s5p-fimc/fimc-capture.c |9 +
1 file changed, 9 insertions(+)
diff --git a/drivers/media/video/s5p-fimc
This patch enhances s5p-tv with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/s5p-tv/mixer_video.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/video/s5p-tv
This patch enhances s5p-mfc with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: Kamil Debski
---
drivers/media/video/s5p-mfc/s5p_mfc_dec.c | 18 ++
drivers/media/video/s5p-mfc/s5p_mfc_enc.c | 18
This patch adds description and usage examples for exporting
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml|3 +
Documentation/DocBook/media/v4l/io.xml
Hi Laurent,
Thank you for your comments.
On 08/21/2012 12:03 PM, Laurent Pinchart wrote:
> Hi Tomasz,
>
> Thanks for the patch.
>
> Just a couple of small comments below.
>
> On Tuesday 14 August 2012 17:34:50 Tomasz Stanislawski wrote:
>> This patch adds support
Hi Hans,
Thank your for the review.
Please refer to the comments below.
On 08/22/2012 12:27 PM, Hans Verkuil wrote:
> On Tue August 14 2012 17:34:31 Tomasz Stanislawski wrote:
>> From: Sumit Semwal
>>
>> Adds DMABUF memory type to v4l framework. Also adds the related
__devinit mxr_probe(struct platform_device
> *pdev)
>
> mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
> if (!mdev) {
> - mxr_err(mdev, "not enough memory.\n");
> + dev_err(dev, "not enough memory.\n");
> re
s
> follows: (http://coccinelle.lip6.fr/)
>
> //
> (
> if@p1 (\(ret < 0\|ret != 0\))
> { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
> when != &ret
> *if(...)
> {
> ... when != ret = e2
> when forall
> return ret;
Hi Hans,
Thank you for review.
On 08/22/2012 12:47 PM, Hans Verkuil wrote:
> On Tue August 14 2012 17:34:32 Tomasz Stanislawski wrote:
>> This patch adds description and usage examples for importing
>> DMABUF file descriptor in V4L2.
>>
>> Signed-off-by: Tomasz Sta
On 08/22/2012 01:47 PM, Hans Verkuil wrote:
> On Wed August 22 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.
>
Hi Hans,
Thank you for review.
Please refer to the comments below.
On 08/22/2012 01:41 PM, Hans Verkuil wrote:
> On Tue August 14 2012 17:34:48 Tomasz Stanislawski wrote:
>> This patch adds extension to V4L2 api. It allow to export a mmap buffer as
>> file
>> descriptor. Ne
Hi Hans,
Thank your for your comments.
On 09/26/2012 08:39 AM, Hans Verkuil wrote:
> On Tue September 25 2012 18:30:43 Tomasz Stanislawski wrote:
>> Hi Hans,
>> Thank you for review.
>> Please refer to the comments below.
>>
>> On 08/22/2012 01:41 PM, Hans Verkuil
that the changes are dramatic but fixing issues with pipeline
configuration is worth it.
What do you think about the proposed idea?
Regards,
Tomasz Stanislawski
[1] http://www.spinics.net/lists/linux-media/msg34541.html
--
To unsubscribe from this list: send the line "unsubscribe linux
Hi Laurent,
On 08/15/2012 10:04 PM, Laurent Pinchart wrote:
> Hi Tomasz,
>
> Thanks for the patch.
>
> On Tuesday 14 August 2012 17:34:51 Tomasz Stanislawski wrote:
>> This patch adds taking reference to the device for MMAP buffers.
>>
>> Such buffers, may be ex
to use dma_mmap_coherent call
v4l: vb2-dma-contig: fail if user ptr buffer is not correctly aligned
Sumit Semwal (4):
v4l: Add DMABUF as a memory type
v4l: vb2: add support for shared buffer (dma_buf)
v4l: vb: remove warnings about MEMORY_DMABUF
v4l: vb2-dma-contig: add support for dm
From: Sumit Semwal
Adds DMABUF memory type to v4l framework. Also adds the related file
descriptor in v4l2_plane and v4l2_buffer.
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
Acked-by: Laurent
This patch adds description and usage examples for importing
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml |4 +
Documentation/DocBook/media/v4l/io.xml
sample allocator of
dma-buf shared buffer is given at [1]]
[1]: Rob Clark's DRM:
https://github.com/robclark/kernel-omap4/commits/drmplane-dmabuf
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
From: Sumit Semwal
Adding DMABUF memory type causes videobuf to complain about not using it
in some switch cases. This patch removes these warnings.
Signed-off-by: Sumit Semwal
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf-core.c |4
1 file changed, 4 insertions(+)
dif
From: Laurent Pinchart
Signed-off-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 36 ++--
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/media/video/videobuf2-dma-contig.c
ind
This patch removes a reference to alloc_ctx from an instance of a DMA
contiguous buffer. It helps to avoid a risk of a dangling pointer if the
context is released while the buffer is still valid. Moreover it removes one
dereference step while accessing a device structure.
Signed-off-by: Tomasz
From: Laurent Pinchart
Group functions by buffer type.
Signed-off-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 92
1 file changed, 54 insertions(+), 38 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma-contig.c
b/drivers/media
Seung-Woo Kim
.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 226 ++--
1 file changed, 210 insertions(+), 16 deletions(-)
diff --git a/drivers/media/video/videobuf2-dma
From: Marek Szyprowski
This patch adds support for prepare/finish callbacks in VB2 allocators. These
callback are used for buffer flushing.
Signed-off-by: Marek Szyprowski
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-core.c | 11 +++
include/media/videobuf2-core.h
From: Marek Szyprowski
Add prepare/finish callbacks to vb2-dma-contig allocator.
Signed-off-by: Marek Szyprowski
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-dma-contig.c | 24
1 file changed, 24 insertions(+)
diff --git a/drivers/media/video/videob
]
Signed-off-by: Tomasz Stanislawski
[integration with refactored dma-contig allocator]
Acked-by: Laurent Pinchart
---
drivers/media/video/Kconfig|1 +
drivers/media/video/videobuf2-dma-contig.c | 120 +++-
2 files changed, 119 insertions(+), 2
This patch adds support for importing DMABUF files for
vmalloc allocator in Videobuf2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-vmalloc.c | 56 +++
1 file changed, 56 insertions
This patch enhances VIVI driver with a support for importing a buffer
from DMABUF file descriptors.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/vivi.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/video/vivi.c b
This patch enhances s5p-tv with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/s5p-tv/mixer_video.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media
This patch enhances s5p-fimc with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Sylwester Nawrocki
---
drivers/media/video/s5p-fimc/fimc-capture.c |2 +-
1 file changed, 1 insertion(+), 1 deletion
From: Marek Szyprowski
Let mmap method to use dma_mmap_coherent call. Moreover, this patch removes
vb2_mmap_pfn_range from videobuf2 helpers as it was suggested by Laurent
Pinchart. The function is no longer used in vb2 code.
Signed-off-by: Marek Szyprowski
Signed-off-by: Tomasz Stanislawski
This patch adds description and usage examples for exporting
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml|3 +
Documentation/DocBook/media/v4l/io.xml
This patch adds extension to V4L2 api. It allow to export a mmap buffer as file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on success.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video
This patch adds extension to videobuf2-core. It allow to export a mmap buffer
as a file descriptor.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
---
drivers/media/video/videobuf2-core.c | 82 ++
include/media
This patch adds support for exporting a dma-contig buffer using
DMABUF interface.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/videobuf2-dma-contig.c | 200
1 file changed, 200 insertions(+)
diff --git a/drivers/media
descriptor(s). The device pointer kept in a buffer must be valid for the
whole buffer's lifetime. Therefore MMAP buffers should take a reference to the
device to avoid risk of dangling pointers.
Signed-off-by: Tomasz Stanislawski
---
drivers/media/video/videobuf2-dma-contig.c |5 +++
From: Marek Szyprowski
The DMA transfer must be aligned to a specific value. If userptr is not aligned
to DMA requirements then unexpected corruptions of the memory may occur before
or after a buffer. To prevent such situations, all unligned userptr buffers
are rejected at VIDIOC_QBUF.
Signed-o
This patch enhances s5p-fimc with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: Sylwester Nawrocki
---
drivers/media/video/s5p-fimc/fimc-capture.c |9 +
1 file changed, 9 insertions(+)
diff --git a
This patch enhances s5p-tv with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/video/s5p-tv/mixer_video.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/video/s5p-tv
This patch enhances s5p-mfc with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: Kamil Debski
---
drivers/media/video/s5p-mfc/s5p_mfc_dec.c | 14 ++
drivers/media/video/s5p-mfc/s5p_mfc_enc.c | 14
media tree.
Regards,
Tomasz Stanislawski
The following changes since commit 2425bb3d4016ed95ce83a90b53bd92c7f31091e4:
em28xx: regression fix: use DRX-K sync firmware requests on em28xx
(2012-10-02 17:15:22 -0300)
are available in the git repository at:
git://git.infradead.org/users/kmpark/linu
Hi Hans,
On 10/07/2012 04:17 PM, Hans Verkuil wrote:
> On Sun October 7 2012 15:38:30 Laurent Pinchart wrote:
>> Hi Hans,
>>
>> On Friday 05 October 2012 10:55:40 Hans Verkuil wrote:
>>> On Tue October 2 2012 16:27:29 Tomasz Stanislawski wrote:
>>>> This
Hi Hans,
On 10/08/2012 11:54 AM, Hans Verkuil wrote:
> On Mon October 8 2012 11:40:37 Tomasz Stanislawski wrote:
>> Hi Hans,
>>
>> On 10/07/2012 04:17 PM, Hans Verkuil wrote:
>>> On Sun October 7 2012 15:38:30 Laurent Pinchart wrote:
>>>> Hi Hans,
>>
On 10/06/2012 02:22 PM, Hans Verkuil wrote:
> On Tue October 2 2012 16:27:30 Tomasz Stanislawski wrote:
>> This patch adds extension to videobuf2-core. It allow to export a mmap buffer
>> as a file descriptor.
>>
>> Signed-off-by: Tomasz Stanislawski
>> Signed-o
ma_buf)
v4l: vb: remove warnings about MEMORY_DMABUF
v4l: vb2-dma-contig: add support for dma_buf importing
Tomasz Stanislawski (16):
Documentation: media: description of DMABUF importing in V4L2
v4l: vb2-dma-contig: remove reference of alloc_ctx from a buffer
v4l: vb2-dma-contig: add suppo
From: Sumit Semwal
Adds DMABUF memory type to v4l framework. Also adds the related file
descriptor in v4l2_plane and v4l2_buffer.
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
Acked-by: Laurent
This patch adds description and usage examples for importing
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml |4 +
Documentation/DocBook/media/v4l/io.xml
sample allocator of
dma-buf shared buffer is given at [1]]
[1]: Rob Clark's DRM:
https://github.com/robclark/kernel-omap4/commits/drmplane-dmabuf
Signed-off-by: Tomasz Stanislawski
[original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal
Signed-off-by: Sumit Semwal
From: Sumit Semwal
Adding DMABUF memory type causes videobuf to complain about not using it
in some switch cases. This patch removes these warnings.
Signed-off-by: Sumit Semwal
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf-core.c |4
1 file c
From: Laurent Pinchart
Signed-off-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 36
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c
b/drivers/media/v4l2
This patch removes a reference to alloc_ctx from an instance of a DMA
contiguous buffer. It helps to avoid a risk of a dangling pointer if the
context is released while the buffer is still valid. Moreover it removes one
dereference step while accessing a device structure.
Signed-off-by: Tomasz
From: Laurent Pinchart
Group functions by buffer type.
Signed-off-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 92 ++--
1 file changed, 54 insertions(+), 38 deletions(-)
diff --git a/drivers/media/v4l2-core/videobuf2-d
Seung-Woo Kim
.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 226 ++--
1 file changed, 210 insertions(+), 16 deletions(-)
diff --git a/drivers/media
From: Marek Szyprowski
This patch adds support for prepare/finish callbacks in VB2 allocators. These
callback are used for buffer flushing.
Signed-off-by: Marek Szyprowski
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-core.c | 11 +++
inclu
From: Marek Szyprowski
Add prepare/finish callbacks to vb2-dma-contig allocator.
Signed-off-by: Marek Szyprowski
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 24
1 file changed, 24 insertions(+)
diff --git
]
Signed-off-by: Tomasz Stanislawski
[integration with refactored dma-contig allocator]
Acked-by: Laurent Pinchart
---
drivers/media/v4l2-core/Kconfig|1 +
drivers/media/v4l2-core/videobuf2-dma-contig.c | 120 +++-
2 files changed, 119 insertions
This patch adds support for importing DMABUF files for
vmalloc allocator in Videobuf2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/Kconfig |1 +
drivers/media/v4l2-core/videobuf2
This patch enhances VIVI driver with a support for importing a buffer
from DMABUF file descriptors.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Hans Verkuil
---
drivers/media/platform/vivi.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
This patch enhances s5p-tv with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Hans Verkuil
---
drivers/media/platform/s5p-tv/mixer_video.c |2 +-
1 file changed, 1 insertion(+), 1 deletion
This patch enhances s5p-fimc with support for DMABUF importing via
V4L2_MEMORY_DMABUF memory type.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Sylwester Nawrocki
Acked-by: Hans Verkuil
---
drivers/media/platform/s5p-fimc/fimc-capture.c |2 +-
drivers/media
From: Marek Szyprowski
Let mmap method to use dma_mmap_coherent call. Moreover, this patch removes
vb2_mmap_pfn_range from videobuf2 helpers as it was suggested by Laurent
Pinchart. The function is no longer used in vb2 code.
Signed-off-by: Marek Szyprowski
Signed-off-by: Tomasz Stanislawski
This patch adds description and usage examples for exporting
DMABUF file descriptor in V4L2.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: linux-...@vger.kernel.org
---
Documentation/DocBook/media/v4l/compat.xml|3 +
Documentation/DocBook/media/v4l/io.xml
This patch adds extension to V4L2 api. It allow to export a mmap buffer as file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on success.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
---
drivers/media/v4l2
This patch adds extension to videobuf2-core. It allow to export a mmap buffer
as a file descriptor.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Laurent Pinchart
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/v4l2-mem2mem.c | 13 +
drivers/media/v4l2
This patch adds support for exporting a dma-contig buffer using
DMABUF interface.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 200
1 file changed, 200 insertions(+)
diff
descriptor(s). The device pointer kept in a buffer must be valid for the
whole buffer's lifetime. Therefore MMAP buffers should take a reference to the
device to avoid risk of dangling pointers.
Signed-off-by: Tomasz Stanislawski
Acked-by: Hans Verkuil
---
drivers/media/v4l2-core/videobuf
From: Marek Szyprowski
The DMA transfer must be aligned to a specific value. If userptr is not aligned
to DMA requirements then unexpected corruptions of the memory may occur before
or after a buffer. To prevent such situations, all unligned userptr buffers
are rejected at VIDIOC_QBUF.
Signed-o
Most operations on DMA and DMABUF framework need page
aligned buffers. This fix guarantees this requirement
for vb2-dma-contig buffers.
Signed-off-by: Tomasz Stanislawski
---
drivers/media/v4l2-core/videobuf2-dma-contig.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media
This patch enhances s5p-fimc with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
CC: Sylwester Nawrocki
Acked-by: Hans Verkuil
---
drivers/media/platform/s5p-fimc/fimc-capture.c |9 +
drivers/media/platform
This patch enhances s5p-tv with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.
Signed-off-by: Tomasz Stanislawski
Signed-off-by: Kyungmin Park
Acked-by: Hans Verkuil
---
drivers/media/platform/s5p-tv/mixer_video.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a
201 - 300 of 474 matches
Mail list logo
