linux-kernel - [PATCH v3 13/13] admin-guide: media: Update documents for StarFive Camera Subsystem

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Date: Mon,  5 Feb 2024 01:04:24 -0800
From: Changhuang Liang <changhuang.liang@...rfivetech.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Hans Verkuil <hverkuil-cisco@...all.nl>,
	Ming Qian <ming.qian@....com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Benjamin Gaignard <benjamin.gaignard@...labora.com>,
	Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>,
	Mingjia Zhang <mingjia.zhang@...iatek.com>
Cc: Jack Zhu <jack.zhu@...rfivetech.com>,
	Changhuang Liang <changhuang.liang@...rfivetech.com>,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-staging@...ts.linux.dev
Subject: [PATCH v3 13/13] admin-guide: media: Update documents for StarFive Camera Subsystem

Add ISP output parameters and 3A statistisc collection data video
device for documents.

Signed-off-by: Changhuang Liang <changhuang.liang@...rfivetech.com>
---
 .../admin-guide/media/starfive_camss.rst      | 11 +++++++---
 .../media/starfive_camss_graph.dot            | 22 +++++++++++--------
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/Documentation/admin-guide/media/starfive_camss.rst b/Documentation/admin-guide/media/starfive_camss.rst
index ca42e9447c47..020f1969e67f 100644
--- a/Documentation/admin-guide/media/starfive_camss.rst
+++ b/Documentation/admin-guide/media/starfive_camss.rst
@@ -58,15 +58,20 @@ The media controller pipeline graph is as follows:
     :alt:   starfive_camss_graph.dot
     :align: center
 
-The driver has 2 video devices:
+The driver has 4 video devices:
 
+- output_params: The meta output device, transmitting the parameters to ISP
+  module.
 - capture_raw: The capture device, capturing image data directly from a sensor.
 - capture_yuv: The capture device, capturing YUV frame data processed by the
-  ISP module
+  ISP module.
+- capture_scd: The meta capture device, capturing 3A statistics collection data
+  processed by the ISP module.
 
 The driver has 3 subdevices:
 
-- stf_isp: is responsible for all the isp operations, outputs YUV frames.
+- stf_isp: is responsible for all the isp operations, outputs YUV frames
+  and 3A statistics collection data.
 - cdns_csi2rx: a CSI-2 bridge supporting up to 4 CSI lanes in input, and 4
   different pixel streams in output.
 - imx219: an image sensor, image data is sent through MIPI CSI-2.
diff --git a/Documentation/admin-guide/media/starfive_camss_graph.dot b/Documentation/admin-guide/media/starfive_camss_graph.dot
index 8eff1f161ac7..7961255d3ad6 100644
--- a/Documentation/admin-guide/media/starfive_camss_graph.dot
+++ b/Documentation/admin-guide/media/starfive_camss_graph.dot
@@ -1,12 +1,16 @@
 digraph board {
 	rankdir=TB
-	n00000001 [label="{{<port0> 0} | stf_isp\n/dev/v4l-subdev0 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
-	n00000001:port1 -> n00000008 [style=dashed]
-	n00000004 [label="capture_raw\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
-	n00000008 [label="capture_yuv\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
-	n0000000e [label="{{<port0> 0} | cdns_csi2rx.19800000.csi-bridge\n | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
-	n0000000e:port1 -> n00000001:port0 [style=dashed]
-	n0000000e:port1 -> n00000004 [style=dashed]
-	n00000018 [label="{{} | imx219 6-0010\n/dev/v4l-subdev1 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
-	n00000018:port0 -> n0000000e:port0 [style=bold]
+	n00000001 [label="{{<port0> 0 | <port1> 1} | stf_isp\n/dev/v4l-subdev0 | {<port2> 2 | <port3> 3}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000001:port2 -> n0000000e
+	n00000001:port3 -> n00000012 [style=dashed]
+	n00000006 [label="output_params\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
+	n00000006 -> n00000001:port1 [style=dashed]
+	n0000000a [label="capture_raw\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
+	n0000000e [label="capture_yuv\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
+	n00000012 [label="capture_scd\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
+	n0000001c [label="{{<port0> 0} | cdns_csi2rx.19800000.csi-bridge\n/dev/v4l-subdev1 | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
+	n0000001c:port1 -> n00000001:port0 [style=dashed]
+	n0000001c:port1 -> n0000000a [style=dashed]
+	n00000026 [label="{{} | imx219 6-0010\n/dev/v4l-subdev2 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000026:port0 -> n0000001c:port0 [style=bold]
 }
-- 
2.25.1