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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
84 lines
2.9 KiB
Diff
84 lines
2.9 KiB
Diff
From 0b2a62596d0e6efe17bb87a3a5ebd91cee60c64b Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Mon, 29 Oct 2018 17:57:45 +0000
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Subject: [PATCH] media: videobuf2: Allow exporting of a struct dmabuf
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videobuf2 only allowed exporting a dmabuf as a file descriptor,
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but there are instances where having the struct dma_buf is
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useful within the kernel.
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Split the current implementation into two, one step which
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exports a struct dma_buf, and the second which converts that
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into an fd.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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.../media/common/videobuf2/videobuf2-core.c | 21 ++++++++++++++++---
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include/media/videobuf2-core.h | 15 +++++++++++++
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2 files changed, 33 insertions(+), 3 deletions(-)
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--- a/drivers/media/common/videobuf2/videobuf2-core.c
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+++ b/drivers/media/common/videobuf2/videobuf2-core.c
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@@ -1851,12 +1851,12 @@ static int __find_plane_by_offset(struct
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return -EINVAL;
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}
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-int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
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- unsigned int index, unsigned int plane, unsigned int flags)
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+int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type,
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+ unsigned int index, unsigned int plane,
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+ unsigned int flags, struct dma_buf **dmabuf)
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{
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struct vb2_buffer *vb = NULL;
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struct vb2_plane *vb_plane;
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- int ret;
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struct dma_buf *dbuf;
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if (q->memory != VB2_MEMORY_MMAP) {
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@@ -1906,6 +1906,21 @@ int vb2_core_expbuf(struct vb2_queue *q,
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return -EINVAL;
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}
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+ *dmabuf = dbuf;
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+ return 0;
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+}
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+EXPORT_SYMBOL_GPL(vb2_core_expbuf_dmabuf);
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+
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+int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
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+ unsigned int index, unsigned int plane, unsigned int flags)
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+{
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+ struct dma_buf *dbuf;
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+ int ret;
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+
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+ ret = vb2_core_expbuf_dmabuf(q, type, index, plane, flags, &dbuf);
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+ if (ret)
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+ return ret;
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+
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ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
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if (ret < 0) {
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dprintk(3, "buffer %d, plane %d failed to export (%d)\n",
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--- a/include/media/videobuf2-core.h
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+++ b/include/media/videobuf2-core.h
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@@ -825,6 +825,21 @@ int vb2_core_streamon(struct vb2_queue *
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int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
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/**
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+ * vb2_core_expbuf_dmabuf() - Export a buffer as a dma_buf structure
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+ * @q: videobuf2 queue
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+ * @type: buffer type
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+ * @index: id number of the buffer
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+ * @plane: index of the plane to be exported, 0 for single plane queues
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+ * @flags: flags for newly created file, currently only O_CLOEXEC is
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+ * supported, refer to manual of open syscall for more details
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+ * @dmabuf: Returns the dmabuf pointer
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+ *
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+ */
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+int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type,
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+ unsigned int index, unsigned int plane,
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+ unsigned int flags, struct dma_buf **dmabuf);
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+
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+/**
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* vb2_core_expbuf() - Export a buffer as a file descriptor.
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* @q: pointer to &struct vb2_queue with videobuf2 queue.
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* @fd: pointer to the file descriptor associated with DMABUF
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