diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0243-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0243-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0243-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch b/target/linux/bcm27xx/patches-4.19/950-0243-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch deleted file mode 100644 index fbaa3c2d40..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0243-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch +++ /dev/null @@ -1,83 +0,0 @@ -From 0b2a62596d0e6efe17bb87a3a5ebd91cee60c64b Mon Sep 17 00:00:00 2001 -From: Dave Stevenson <dave.stevenson@raspberrypi.org> -Date: Mon, 29 Oct 2018 17:57:45 +0000 -Subject: [PATCH] media: videobuf2: Allow exporting of a struct dmabuf - -videobuf2 only allowed exporting a dmabuf as a file descriptor, -but there are instances where having the struct dma_buf is -useful within the kernel. - -Split the current implementation into two, one step which -exports a struct dma_buf, and the second which converts that -into an fd. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> ---- - .../media/common/videobuf2/videobuf2-core.c | 21 ++++++++++++++++--- - include/media/videobuf2-core.h | 15 +++++++++++++ - 2 files changed, 33 insertions(+), 3 deletions(-) - ---- a/drivers/media/common/videobuf2/videobuf2-core.c -+++ b/drivers/media/common/videobuf2/videobuf2-core.c -@@ -1851,12 +1851,12 @@ static int __find_plane_by_offset(struct - return -EINVAL; - } - --int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type, -- unsigned int index, unsigned int plane, unsigned int flags) -+int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type, -+ unsigned int index, unsigned int plane, -+ unsigned int flags, struct dma_buf **dmabuf) - { - struct vb2_buffer *vb = NULL; - struct vb2_plane *vb_plane; -- int ret; - struct dma_buf *dbuf; - - if (q->memory != VB2_MEMORY_MMAP) { -@@ -1906,6 +1906,21 @@ int vb2_core_expbuf(struct vb2_queue *q, - return -EINVAL; - } - -+ *dmabuf = dbuf; -+ return 0; -+} -+EXPORT_SYMBOL_GPL(vb2_core_expbuf_dmabuf); -+ -+int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type, -+ unsigned int index, unsigned int plane, unsigned int flags) -+{ -+ struct dma_buf *dbuf; -+ int ret; -+ -+ ret = vb2_core_expbuf_dmabuf(q, type, index, plane, flags, &dbuf); -+ if (ret) -+ return ret; -+ - ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE); - if (ret < 0) { - dprintk(3, "buffer %d, plane %d failed to export (%d)\n", ---- a/include/media/videobuf2-core.h -+++ b/include/media/videobuf2-core.h -@@ -825,6 +825,21 @@ int vb2_core_streamon(struct vb2_queue * - int vb2_core_streamoff(struct vb2_queue *q, unsigned int type); - - /** -+ * vb2_core_expbuf_dmabuf() - Export a buffer as a dma_buf structure -+ * @q: videobuf2 queue -+ * @type: buffer type -+ * @index: id number of the buffer -+ * @plane: index of the plane to be exported, 0 for single plane queues -+ * @flags: flags for newly created file, currently only O_CLOEXEC is -+ * supported, refer to manual of open syscall for more details -+ * @dmabuf: Returns the dmabuf pointer -+ * -+ */ -+int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type, -+ unsigned int index, unsigned int plane, -+ unsigned int flags, struct dma_buf **dmabuf); -+ -+/** - * vb2_core_expbuf() - Export a buffer as a file descriptor. - * @q: pointer to &struct vb2_queue with videobuf2 queue. - * @fd: pointer to the file descriptor associated with DMABUF |