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-rw-r--r--include/media/videobuf2-core.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 2fefcf4..6ef2d01 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -356,8 +356,8 @@ struct v4l2_fh;
* @buf_struct_size: size of the driver-specific buffer structure;
* "0" indicates the driver doesn't want to use a custom buffer
* structure type, so sizeof(struct vb2_buffer) will is used
- * @timestamp_flags: Timestamp flags; V4L2_BUF_FLAGS_TIMESTAMP_* and
- * V4L2_BUF_FLAGS_TSTAMP_SRC_*
+ * @timestamp_flags: Timestamp flags; V4L2_BUF_FLAG_TIMESTAMP_* and
+ * V4L2_BUF_FLAG_TSTAMP_SRC_*
* @gfp_flags: additional gfp flags used when allocating the buffers.
* Typically this is 0, but it may be e.g. GFP_DMA or __GFP_DMA32
* to force the buffer allocation to a specific memory zone.
@@ -366,6 +366,7 @@ struct v4l2_fh;
* cannot be started unless at least this number of buffers
* have been queued into the driver.
*
+ * @mmap_lock: private mutex used when buffers are allocated/freed/mmapped
* @memory: current memory type used
* @bufs: videobuf buffer structures
* @num_buffers: number of allocated/used buffers
@@ -402,6 +403,7 @@ struct vb2_queue {
u32 min_buffers_needed;
/* private: internal use only */
+ struct mutex mmap_lock;
enum v4l2_memory memory;
struct vb2_buffer *bufs[VIDEO_MAX_FRAME];
unsigned int num_buffers;
@@ -592,6 +594,15 @@ vb2_plane_size(struct vb2_buffer *vb, unsigned int plane_no)
return 0;
}
+/**
+ * vb2_start_streaming_called() - return streaming status of driver
+ * @q: videobuf queue
+ */
+static inline bool vb2_start_streaming_called(struct vb2_queue *q)
+{
+ return q->start_streaming_called;
+}
+
/*
* The following functions are not part of the vb2 core API, but are simple
* helper functions that you can use in your struct v4l2_file_operations,

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