From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Stanislawski Subject: [PATCH 01/11] v4l: Add DMABUF as a memory type Date: Thu, 05 Apr 2012 15:59:58 +0200 Message-ID: <1333634408-4960-2-git-send-email-t.stanislaws@samsung.com> References: <1333634408-4960-1-git-send-email-t.stanislaws@samsung.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: <1333634408-4960-1-git-send-email-t.stanislaws@samsung.com> Sender: linux-media-owner@vger.kernel.org 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, subashrp@gmail.com, Sumit Semwal List-Id: dri-devel@lists.freedesktop.org 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 --- include/linux/videodev2.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index c9c9a46..38259bf 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 +628,9 @@ 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 +657,7 @@ struct v4l2_buffer { __u32 offset; unsigned long userptr; struct v4l2_plane *planes; + int fd; } m; __u32 length; __u32 input; -- 1.7.5.4