media: doc: add document for rkisp1 meta buffer format

This commit add document for rkisp1 meta buffer format

Signed-off-by: Jacob Chen <jacob-chen@rock-chips.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
[update for upstream]
Signed-off-by: Helen Koike <helen.koike@collabora.com>

Series-changes: 7
- s/correspond/corresponding
- s/use/uses
- s/docuemnt/document

Documentation/media/uapi/v4l/meta-formats.rst

@@ -24,3 +24,5 @@ These formats are used for the :ref:`metadata` interface only.
     pixfmt-meta-uvc
     pixfmt-meta-vsp1-hgo
     pixfmt-meta-vsp1-hgt
+    pixfmt-meta-rkisp1-params
+    pixfmt-meta-rkisp1-stat

Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst

+.. -*- coding: utf-8; mode: rst -*-
+
+.. _v4l2-meta-fmt-rkisp1-params:
+
+*******************************
+V4L2_META_FMT_RK_ISP1_PARAMS
+*******************************
+
+Rockchip ISP1 Parameters Data
+
+Description
+===========
+
+This format describes input parameters for the Rockchip ISP1.
+
+It uses c-struct :c:type:`rkisp1_isp_params_cfg`, which is defined in
+the ``linux/rkisp1-config.h`` header file, see it for details.
+
+The parameters consist of multiple modules.
+The module won't be updated if the corresponding bit was not set in module_*_update.

Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst

+.. -*- coding: utf-8; mode: rst -*-
+
+.. _v4l2-meta-fmt-rkisp1-stat:
+
+*******************************
+V4L2_META_FMT_RK_ISP1_STAT_3A
+*******************************
+
+Rockchip ISP1 Statistics Data
+
+Description
+===========
+
+This format describes image color statistics information generated by the Rockchip
+ISP1.
+
+It uses c-struct :c:type:`rkisp1_stat_buffer`, which is defined in
+the ``linux/cifisp_stat.h`` header file, see it for details.