linux-kernel - [PATCH v1 7/7] admin-guide: media: Update documents for StarFive Camera Subsystem

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Date: Wed,  6 Mar 2024 01:33:34 -0800
From: Changhuang Liang <changhuang.liang@...rfivetech.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	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 v1 7/7] admin-guide: media: Update documents for StarFive Camera Subsystem

Add ISP capture_raw video device in documents. It support output raw
frames by ISP module.

Signed-off-by: Changhuang Liang <changhuang.liang@...rfivetech.com>
---
 .../admin-guide/media/starfive_camss.rst      | 11 ++++++----
 .../media/starfive_camss_graph.dot            | 20 ++++++++++---------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/Documentation/admin-guide/media/starfive_camss.rst b/Documentation/admin-guide/media/starfive_camss.rst
index c224e6123042..b8d1ce878847 100644
--- a/Documentation/admin-guide/media/starfive_camss.rst
+++ b/Documentation/admin-guide/media/starfive_camss.rst
@@ -44,7 +44,7 @@ The Starfive Camera Subsystem hardware consists of::
 - Parallel: The parallel interface,  receiving data from a parallel sensor.
 
 - ISP: The ISP, processing raw Bayer data from an image sensor and producing
-  YUV frames.
+  YUV frames, and also support output RAW frames.
 
 
 Topology
@@ -58,15 +58,18 @@ The media controller pipeline graph is as follows:
     :alt:   starfive_camss_graph.dot
     :align: center
 
-The driver has 2 video devices:
+The driver has 3 video devices:
 
 - capture_dump: 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_raw: The capture device, capturing RAW frame 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
+  RAW frames.
 - 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 5e8731e27701..dab3e3ccbe9a 100644
--- a/Documentation/admin-guide/media/starfive_camss_graph.dot
+++ b/Documentation/admin-guide/media/starfive_camss_graph.dot
@@ -1,12 +1,14 @@
 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_dump\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} | stf_isp\n/dev/v4l-subdev0 | {<port1> 1 | <port2> 2}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000001:port1 -> n00000009 [style=dashed]
+	n00000001:port2 -> n0000000d [style=dashed]
+	n00000005 [label="capture_dump\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
+	n00000009 [label="capture_yuv\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
+	n0000000d [label="capture_raw\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
+	n00000015 [label="{{<port0> 0} | cdns_csi2rx.19800000.csi\n/dev/v4l-subdev1 | {<port1> 1 | <port2> 2 | <port3> 3 | <port4> 4}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000015:port1 -> n00000001:port0 [style=dashed]
+	n00000015:port1 -> n00000005 [style=dashed]
+	n0000001f [label="{{} | imx219 6-0010\n/dev/v4l-subdev2 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
+	n0000001f:port0 -> n00000015:port0 [style=bold]
 }
-- 
2.25.1