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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-12-11 11:28:37 -0200 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-12-11 11:28:37 -0200 |
commit | 77c53d0b56264a8fc5844e087ad15fffe20c299d (patch) | |
tree | 61925f42355feabc010c53172212742ec3651d4f /include/media/videobuf2-core.h | |
parent | 9374020a78fce13a1cf2edf3d26f6dd7231b5c3d (diff) | |
parent | d8658bca2e5696df2b6c69bc5538f8fe54e4a01e (diff) | |
download | talos-op-linux-77c53d0b56264a8fc5844e087ad15fffe20c299d.tar.gz talos-op-linux-77c53d0b56264a8fc5844e087ad15fffe20c299d.zip |
Merge branch 'for_3.8-rc1' into v4l_for_linus
* for_3.8-rc1: (243 commits)
[media] omap3isp: Replace cpu_is_omap3630() with ISP revision check
[media] omap3isp: Prepare/unprepare clocks before/after enable/disable
[media] omap3isp: preview: Add support for 8-bit formats at the sink pad
[media] omap3isp: Replace printk with dev_*
[media] omap3isp: Find source pad from external entity
[media] omap3isp: Configure CSI-2 phy based on platform data
[media] omap3isp: Add PHY routing configuration
[media] omap3isp: Add CSI configuration registers from control block to ISP resources
[media] omap3isp: Remove unneeded module memory address definitions
[media] omap3isp: Use monotonic timestamps for statistics buffers
[media] uvcvideo: Fix control value clamping for unsigned integer controls
[media] uvcvideo: Mark first output terminal as default video node
[media] uvcvideo: Add VIDIOC_[GS]_PRIORITY support
[media] uvcvideo: Return -ENOTTY for unsupported ioctls
[media] uvcvideo: Set device_caps in VIDIOC_QUERYCAP
[media] uvcvideo: Don't fail when an unsupported format is requested
[media] uvcvideo: Return -EACCES when trying to access a read/write-only control
[media] uvcvideo: Set error_idx properly for extended controls API failures
[media] rtl28xxu: add NOXON DAB/DAB+ USB dongle rev 2
[media] fc2580: write some registers conditionally
...
Diffstat (limited to 'include/media/videobuf2-core.h')
-rw-r--r-- | include/media/videobuf2-core.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index e04252a9fea6..9cfd4ee9e56f 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -16,6 +16,7 @@ #include <linux/mutex.h> #include <linux/poll.h> #include <linux/videodev2.h> +#include <linux/dma-buf.h> struct vb2_alloc_ctx; struct vb2_fileio_data; @@ -41,6 +42,24 @@ struct vb2_fileio_data; * argument to other ops in this structure * @put_userptr: inform the allocator that a USERPTR buffer will no longer * be used + * @attach_dmabuf: attach a shared struct dma_buf for a hardware operation; + * used for DMABUF memory types; alloc_ctx is the alloc context + * dbuf is the shared dma_buf; returns NULL on failure; + * allocator private per-buffer structure on success; + * this needs to be used for further accesses to the buffer + * @detach_dmabuf: inform the exporter of the buffer that the current DMABUF + * buffer is no longer used; the buf_priv argument is the + * allocator private per-buffer structure previously returned + * from the attach_dmabuf callback + * @map_dmabuf: request for access to the dmabuf from allocator; the allocator + * of dmabuf is informed that this driver is going to use the + * dmabuf + * @unmap_dmabuf: releases access control to the dmabuf - allocator is notified + * that this driver is done using the dmabuf for now + * @prepare: called every time the buffer is passed from userspace to the + * driver, useful for cache synchronisation, optional + * @finish: called every time the buffer is passed back from the driver + * to the userspace, also optional * @vaddr: return a kernel virtual address to a given memory buffer * associated with the passed private structure or NULL if no * such mapping exists @@ -56,15 +75,27 @@ struct vb2_fileio_data; * Required ops for USERPTR types: get_userptr, put_userptr. * Required ops for MMAP types: alloc, put, num_users, mmap. * Required ops for read/write access types: alloc, put, num_users, vaddr + * Required ops for DMABUF types: attach_dmabuf, detach_dmabuf, map_dmabuf, + * unmap_dmabuf. */ struct vb2_mem_ops { void *(*alloc)(void *alloc_ctx, unsigned long size); void (*put)(void *buf_priv); + struct dma_buf *(*get_dmabuf)(void *buf_priv); void *(*get_userptr)(void *alloc_ctx, unsigned long vaddr, unsigned long size, int write); void (*put_userptr)(void *buf_priv); + void (*prepare)(void *buf_priv); + void (*finish)(void *buf_priv); + + void *(*attach_dmabuf)(void *alloc_ctx, struct dma_buf *dbuf, + unsigned long size, int write); + void (*detach_dmabuf)(void *buf_priv); + int (*map_dmabuf)(void *buf_priv); + void (*unmap_dmabuf)(void *buf_priv); + void *(*vaddr)(void *buf_priv); void *(*cookie)(void *buf_priv); @@ -75,6 +106,8 @@ struct vb2_mem_ops { struct vb2_plane { void *mem_priv; + struct dma_buf *dbuf; + unsigned int dbuf_mapped; }; /** @@ -83,12 +116,14 @@ struct vb2_plane { * @VB2_USERPTR: driver supports USERPTR with streaming API * @VB2_READ: driver supports read() style access * @VB2_WRITE: driver supports write() style access + * @VB2_DMABUF: driver supports DMABUF with streaming API */ enum vb2_io_modes { VB2_MMAP = (1 << 0), VB2_USERPTR = (1 << 1), VB2_READ = (1 << 2), VB2_WRITE = (1 << 3), + VB2_DMABUF = (1 << 4), }; /** @@ -329,6 +364,7 @@ int __must_check vb2_queue_init(struct vb2_queue *q); void vb2_queue_release(struct vb2_queue *q); int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b); +int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb); int vb2_dqbuf(struct vb2_queue *q, struct v4l2_buffer *b, bool nonblocking); int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type); @@ -438,6 +474,8 @@ int vb2_ioctl_qbuf(struct file *file, void *priv, struct v4l2_buffer *p); int vb2_ioctl_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p); int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i); int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i); +int vb2_ioctl_expbuf(struct file *file, void *priv, + struct v4l2_exportbuffer *p); /* struct v4l2_file_operations helpers */ |