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From: Tomasz Stanislawski <t.stanislaws@samsung.com>
To: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: airlied@redhat.com, m.szyprowski@samsung.com,
	t.stanislaws@samsung.com, kyungmin.park@samsung.com,
	laurent.pinchart@ideasonboard.com, sumit.semwal@ti.com,
	daeinki@gmail.com, daniel.vetter@ffwll.ch, robdclark@gmail.com,
	pawel@osciak.com, linaro-mm-sig@lists.linaro.org,
	hverkuil@xs4all.nl, remi@remlab.net, subashrp@gmail.com,
	mchehab@redhat.com, Sumit Semwal <sumit.semwal@linaro.org>
Subject: [PATCH v4 01/14] v4l: Add DMABUF as a memory type
Date: Fri, 13 Apr 2012 17:47:43 +0200	[thread overview]
Message-ID: <1334332076-28489-2-git-send-email-t.stanislaws@samsung.com> (raw)
In-Reply-To: <1334332076-28489-1-git-send-email-t.stanislaws@samsung.com>

From: Sumit Semwal <sumit.semwal@ti.com>

Adds DMABUF memory type to v4l framework. Also adds the related file
descriptor in v4l2_plane and v4l2_buffer.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
   [original work in the PoC for buffer sharing]
Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
---
 include/linux/videodev2.h |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index c9c9a46..d884d4a 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -185,6 +185,7 @@ enum v4l2_memory {
 	V4L2_MEMORY_MMAP             = 1,
 	V4L2_MEMORY_USERPTR          = 2,
 	V4L2_MEMORY_OVERLAY          = 3,
+	V4L2_MEMORY_DMABUF           = 4,
 };
 
 /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
@@ -588,6 +589,8 @@ struct v4l2_requestbuffers {
  *			should be passed to mmap() called on the video node)
  * @userptr:		when memory is V4L2_MEMORY_USERPTR, a userspace pointer
  *			pointing to this plane
+ * @fd:			when memory is V4L2_MEMORY_DMABUF, a userspace file
+ *			descriptor associated with this plane
  * @data_offset:	offset in the plane to the start of data; usually 0,
  *			unless there is a header in front of the data
  *
@@ -602,6 +605,7 @@ struct v4l2_plane {
 	union {
 		__u32		mem_offset;
 		unsigned long	userptr;
+		int		fd;
 	} m;
 	__u32			data_offset;
 	__u32			reserved[11];
@@ -624,6 +628,8 @@ struct v4l2_plane {
  *		(or a "cookie" that should be passed to mmap() as offset)
  * @userptr:	for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR;
  *		a userspace pointer pointing to this buffer
+ * @fd:		for non-multiplanar buffers with memory == V4L2_MEMORY_DMABUF;
+ *		a userspace file descriptor associated with this buffer
  * @planes:	for multiplanar buffers; userspace pointer to the array of plane
  *		info structs for this buffer
  * @length:	size in bytes of the buffer (NOT its payload) for single-plane
@@ -650,6 +656,7 @@ struct v4l2_buffer {
 		__u32           offset;
 		unsigned long   userptr;
 		struct v4l2_plane *planes;
+		int		fd;
 	} m;
 	__u32			length;
 	__u32			input;
-- 
1.7.5.4


  reply	other threads:[~2012-04-13 15:48 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-13 15:47 [PATCH v4 00/14] Integration of videobuf2 with dmabuf Tomasz Stanislawski
2012-04-13 15:47 ` Tomasz Stanislawski [this message]
2012-04-17  0:57   ` [PATCH v4 01/14] v4l: Add DMABUF as a memory type Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 02/14] Documentation: media: description of DMABUF importing in V4L2 Tomasz Stanislawski
2012-04-16 23:25   ` Laurent Pinchart
2012-04-19 14:32     ` Tomasz Stanislawski
2012-04-19 20:36       ` Mauro Carvalho Chehab
2012-04-19 20:37       ` Mauro Carvalho Chehab
2012-04-20  8:41         ` Tomasz Stanislawski
2012-04-20 10:56           ` Rémi Denis-Courmont
2012-04-20 10:56             ` Rémi Denis-Courmont
2012-04-20 12:25             ` Tomasz Stanislawski
2012-04-20 13:03               ` Rémi Denis-Courmont
2012-04-20 13:03                 ` Rémi Denis-Courmont
2012-04-21 17:10                 ` Laurent Pinchart
2012-04-20 14:48               ` Mauro Carvalho Chehab
2012-04-20 13:36             ` Mauro Carvalho Chehab
2012-04-23  7:50               ` Marek Szyprowski
2012-04-23 14:00                 ` Mauro Carvalho Chehab
2012-04-13 15:47 ` [PATCH v4 03/14] v4l: vb2: add support for shared buffer (dma_buf) Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 04/14] v4l: vb: remove warnings about MEMORY_DMABUF Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 05/14] v4l: vb2-dma-contig: Shorten vb2_dma_contig prefix to vb2_dc Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 06/14] v4l: vb2-dma-contig: Remove unneeded allocation context structure Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 07/14] v4l: vb2-dma-contig: Reorder functions Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 08/14] v4l: vb2-dma-contig: add support for scatterlist in userptr mode Tomasz Stanislawski
2012-04-17  0:43   ` Laurent Pinchart
2012-04-17  0:43     ` Laurent Pinchart
2012-04-20  8:52     ` Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 09/14] v4l: vb2: add prepare/finish callbacks to allocators Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 10/14] v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 11/14] v4l: vb2-dma-contig: add support for dma_buf importing Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-17  0:57     ` Laurent Pinchart
2012-04-19 11:38     ` Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 12/14] v4l: vb2-dma-contig: change map/unmap behaviour for importers Tomasz Stanislawski
2012-04-17  1:03   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 13/14] v4l: s5p-tv: mixer: support for dmabuf importing Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 14/14] v4l: fimc: " Tomasz Stanislawski
2012-04-20 12:56   ` Sylwester Nawrocki

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