From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from devils.ext.ti.com ([198.47.26.153]:50186 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755379Ab2AEKmU (ORCPT ); Thu, 5 Jan 2012 05:42:20 -0500 From: Sumit Semwal To: , , CC: , , , , , , Sumit Semwal , Sumit Semwal Subject: [RFCv1 1/4] v4l: Add DMABUF as a memory type Date: Thu, 5 Jan 2012 16:11:55 +0530 Message-ID: <1325760118-27997-2-git-send-email-sumit.semwal@ti.com> In-Reply-To: <1325760118-27997-1-git-send-email-sumit.semwal@ti.com> References: <1325760118-27997-1-git-send-email-sumit.semwal@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-media-owner@vger.kernel.org List-ID: 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 4b752d5..3c0ade1 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/ */ @@ -574,6 +575,8 @@ 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 * @@ -588,6 +591,7 @@ struct v4l2_plane { union { __u32 mem_offset; unsigned long userptr; + int fd; } m; __u32 data_offset; __u32 reserved[11]; @@ -610,6 +614,9 @@ 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 @@ -636,6 +643,7 @@ struct v4l2_buffer { __u32 offset; unsigned long userptr; struct v4l2_plane *planes; + int fd; } m; __u32 length; __u32 input; -- 1.7.5.4