From: Jeffrey Kardatzke <jkardatzke@xxxxxxxxxx> Adds documentation for V4L2_MEMORY_FLAG_RESTRICTED. Signed-off-by: Jeffrey Kardatzke <jkardatzke@xxxxxxxxxx> Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx> --- Documentation/userspace-api/media/v4l/buffer.rst | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/Documentation/userspace-api/media/v4l/buffer.rst b/Documentation/userspace-api/media/v4l/buffer.rst index 52bbee81c080..807e43bfed2b 100644 --- a/Documentation/userspace-api/media/v4l/buffer.rst +++ b/Documentation/userspace-api/media/v4l/buffer.rst @@ -696,7 +696,7 @@ enum v4l2_memory .. _memory-flags: -Memory Consistency Flags +Memory Flags ------------------------ .. raw:: latex @@ -728,6 +728,14 @@ Memory Consistency Flags only if the buffer is used for :ref:`memory mapping <mmap>` I/O and the queue reports the :ref:`V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS <V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS>` capability. + * .. _`V4L2-MEMORY-FLAG-RESTRICTED`: + + - ``V4L2_MEMORY_FLAG_RESTRICTED`` + - 0x00000002 + - The queued buffers are expected to be in restricted memory. If not, an + error will be returned. This flag can only be used with ``V4L2_MEMORY_DMABUF``. + Typically restricted buffers are allocated using a restricted dma-heap. This flag + can only be specified if the ``V4L2_BUF_CAP_SUPPORTS_RESTRICTED_MEM`` is set. .. raw:: latex -- 2.25.1
