static void __vb2_queue_cancel(struct vb2_queue *q);
static void __enqueue_in_driver(struct vb2_buffer *vb);
-/**
+/*
* __vb2_buf_mem_alloc() - allocate video memory for the given buffer
*/
static int __vb2_buf_mem_alloc(struct vb2_buffer *vb)
return ret;
}
-/**
+/*
* __vb2_buf_mem_free() - free memory of the given buffer
*/
static void __vb2_buf_mem_free(struct vb2_buffer *vb)
}
}
-/**
+/*
* __vb2_buf_userptr_put() - release userspace memory associated with
* a USERPTR buffer
*/
}
}
-/**
+/*
* __vb2_plane_dmabuf_put() - release memory associated with
* a DMABUF shared plane
*/
p->dbuf_mapped = 0;
}
-/**
+/*
* __vb2_buf_dmabuf_put() - release memory associated with
* a DMABUF shared buffer
*/
__vb2_plane_dmabuf_put(vb, &vb->planes[plane]);
}
-/**
+/*
* __setup_offsets() - setup unique offsets ("cookies") for every plane in
* the buffer.
*/
}
}
-/**
+/*
* __vb2_queue_alloc() - allocate videobuf buffer structures and (for MMAP type)
* video buffer memory for all buffers/planes on the queue and initializes the
* queue
return buffer;
}
-/**
+/*
* __vb2_free_mem() - release all video buffer memory for a given queue
*/
static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
}
}
-/**
+/*
* __vb2_queue_free() - free buffers at the end of the queue - video memory and
* related information, if no buffers are left return the queue to an
* uninitialized state. Might be called even if the queue has already been freed.
}
EXPORT_SYMBOL(vb2_buffer_in_use);
-/**
+/*
* __buffers_in_use() - return true if any buffers on the queue are in use and
* the queue cannot be freed (by the means of REQBUFS(0)) call
*/
}
EXPORT_SYMBOL_GPL(vb2_core_querybuf);
-/**
+/*
* __verify_userptr_ops() - verify that all memory operations required for
* USERPTR queue type have been provided
*/
return 0;
}
-/**
+/*
* __verify_mmap_ops() - verify that all memory operations required for
* MMAP queue type have been provided
*/
return 0;
}
-/**
+/*
* __verify_dmabuf_ops() - verify that all memory operations required for
* DMABUF queue type have been provided
*/
}
EXPORT_SYMBOL_GPL(vb2_discard_done);
-/**
+/*
* __prepare_mmap() - prepare an MMAP buffer
*/
static int __prepare_mmap(struct vb2_buffer *vb, const void *pb)
return ret ? ret : call_vb_qop(vb, buf_prepare, vb);
}
-/**
+/*
* __prepare_userptr() - prepare a USERPTR buffer
*/
static int __prepare_userptr(struct vb2_buffer *vb, const void *pb)
return ret;
}
-/**
+/*
* __prepare_dmabuf() - prepare a DMABUF buffer
*/
static int __prepare_dmabuf(struct vb2_buffer *vb, const void *pb)
return ret;
}
-/**
+/*
* __enqueue_in_driver() - enqueue a vb2_buffer in driver for processing
*/
static void __enqueue_in_driver(struct vb2_buffer *vb)
}
EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
-/**
+/*
* vb2_start_streaming() - Attempt to start streaming.
* @q: videobuf2 queue
*
}
EXPORT_SYMBOL_GPL(vb2_core_qbuf);
-/**
+/*
* __vb2_wait_for_done_vb() - wait for a buffer to become available
* for dequeuing
*
return 0;
}
-/**
+/*
* __vb2_get_done_vb() - get a buffer ready for dequeuing
*
* Will sleep if required for nonblocking == false.
}
EXPORT_SYMBOL_GPL(vb2_wait_for_all_buffers);
-/**
+/*
* __vb2_dqbuf() - bring back the buffer to the DEQUEUED state
*/
static void __vb2_dqbuf(struct vb2_buffer *vb)
}
EXPORT_SYMBOL_GPL(vb2_core_dqbuf);
-/**
+/*
* __vb2_queue_cancel() - cancel and stop (pause) streaming
*
* Removes all queued buffers from driver's queue and all buffers queued by
}
EXPORT_SYMBOL_GPL(vb2_core_streamoff);
-/**
+/*
* __find_plane_by_offset() - find plane associated with the given offset off
*/
static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
}
EXPORT_SYMBOL_GPL(vb2_core_poll);
-/**
+/*
* struct vb2_fileio_buf - buffer context used by file io emulator
*
* vb2 provides a compatibility layer and emulator of file io (read and
unsigned int queued:1;
};
-/**
+/*
* struct vb2_fileio_data - queue context used by file io emulator
*
* @cur_index: the index of the buffer currently being read from or
unsigned write_immediately:1;
};
-/**
+/*
* __vb2_init_fileio() - initialize file io emulator
* @q: videobuf2 queue
* @read: mode selector (1 means read, 0 means write)
return ret;
}
-/**
+/*
* __vb2_cleanup_fileio() - free resourced used by file io emulator
* @q: videobuf2 queue
*/
return 0;
}
-/**
+/*
* __vb2_perform_fileio() - perform a single file io (read or write) operation
* @q: videobuf2 queue
* @data: pointed to target userspace buffer