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From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: bingbu.cao@intel.com, laurent.pinchart@ideasonboard.com,
	andriy.shevchenko@linux.intel.com, hdegoede@redhat.com,
	ilpo.jarvinen@linux.intel.com, claus.stovgaard@gmail.com,
	tomi.valkeinen@ideasonboard.com, tfiga@chromium.org,
	senozhatsky@chromium.org, andreaskleist@gmail.com,
	bingbu.cao@linux.intel.com, tian.shu.qiu@intel.com,
	hongju.wang@intel.com
Subject: [PATCH v4 18/19] Documentation: add Intel IPU6 ISYS driver admin-guide doc
Date: Tue, 16 Apr 2024 23:11:04 +0300	[thread overview]
Message-ID: <20240416201105.781496-19-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20240416201105.781496-1-sakari.ailus@linux.intel.com>

From: Bingbu Cao <bingbu.cao@intel.com>

This document mainly describe the functionality of IPU6 and IPU6 isys
driver, and gives an example that how user can do imaging capture with
tools.

Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 Documentation/admin-guide/media/ipu6-isys.rst | 161 +++++
 .../admin-guide/media/ipu6_isys_graph.svg     | 548 ++++++++++++++++++
 .../admin-guide/media/v4l-drivers.rst         |   1 +
 3 files changed, 710 insertions(+)
 create mode 100644 Documentation/admin-guide/media/ipu6-isys.rst
 create mode 100644 Documentation/admin-guide/media/ipu6_isys_graph.svg

diff --git a/Documentation/admin-guide/media/ipu6-isys.rst b/Documentation/admin-guide/media/ipu6-isys.rst
new file mode 100644
index 000000000000..0721e920b5e6
--- /dev/null
+++ b/Documentation/admin-guide/media/ipu6-isys.rst
@@ -0,0 +1,161 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. include:: <isonum.txt>
+
+========================================================
+Intel Image Processing Unit 6 (IPU6) Input System driver
+========================================================
+
+Copyright |copy| 2023--2024 Intel Corporation
+
+Introduction
+============
+
+This file documents the Intel IPU6 (6th generation Image Processing Unit)
+Input System (MIPI CSI2 receiver) drivers located under
+drivers/media/pci/intel/ipu6.
+
+The Intel IPU6 can be found in certain Intel SoCs but not in all SKUs:
+
+* Tiger Lake
+* Jasper Lake
+* Alder Lake
+* Raptor Lake
+* Meteor Lake
+
+Intel IPU6 is made up of two components - Input System (ISYS) and Processing
+System (PSYS).
+
+The Input System mainly works as MIPI CSI-2 receiver which receives and
+processes the image data from the sensors and outputs the frames to memory.
+
+There are 2 driver modules - intel-ipu6 and intel-ipu6-isys. intel-ipu6 is an
+IPU6 common driver which does PCI configuration, firmware loading and parsing,
+firmware authentication, DMA mapping and IPU-MMU (internal Memory mapping Unit)
+configuration. intel_ipu6_isys implements V4L2, Media Controller and V4L2
+sub-device interfaces. The IPU6 ISYS driver supports camera sensors connected
+to the IPU6 ISYS through V4L2 sub-device sensor drivers.
+
+.. Note:: See Documentation/driver-api/media/drivers/ipu6.rst for more
+	  information about the IPU6 hardware.
+
+Input system driver
+===================
+
+The Input System driver mainly configures CSI-2 D-PHY, constructs the firmware
+stream configuration, sends commands to firmware, gets response from hardware
+and firmware and then returns buffers to user.  The ISYS is represented as
+several V4L2 sub-devices as well as video nodes.
+
+.. kernel-figure::  ipu6_isys_graph.svg
+   :alt: ipu6 isys media graph with multiple streams support
+
+   IPU6 ISYS media graph with multiple streams support
+
+The graph has been produced using the following command:
+
+.. code-block:: none
+
+   fdp -Gsplines=true -Tsvg < dot > dot.svg
+
+Capturing frames with IPU6 ISYS
+-------------------------------
+
+IPU6 ISYS is used to capture frames from the camera sensors connected to the
+CSI2 ports. The supported input formats of ISYS are listed in table below:
+
+.. tabularcolumns:: |p{0.8cm}|p{4.0cm}|p{4.0cm}|
+
+.. flat-table::
+    :header-rows: 1
+
+    * - IPU6 ISYS supported input formats
+
+    * - RGB565, RGB888
+
+    * - UYVY8, YUYV8
+
+    * - RAW8, RAW10, RAW12
+
+.. _ipu6_isys_capture_examples:
+
+Examples
+~~~~~~~~
+
+Here is an example of IPU6 ISYS raw capture on Dell XPS 9315 laptop. On this
+machine, ov01a10 sensor is connected to IPU ISYS CSI-2 port 2, which can
+generate images at sBGGR10 with resolution 1280x800.
+
+Using the media controller APIs, we can configure ov01a10 sensor by
+media-ctl [#f1]_ and yavta [#f2]_ to transmit frames to IPU6 ISYS.
+
+.. code-block:: none
+
+    # Example 1 capture frame from ov01a10 camera sensor
+    # This example assumes /dev/media0 as the IPU ISYS media device
+    export MDEV=/dev/media0
+
+    # Establish the link for the media devices using media-ctl
+    media-ctl -d $MDEV -l "\"ov01a10 3-0036\":0 -> \"Intel IPU6 CSI2 2\":0[1]"
+
+    # Set the format for the media devices
+    media-ctl -d $MDEV -V "ov01a10:0 [fmt:SBGGR10/1280x800]"
+    media-ctl -d $MDEV -V "Intel IPU6 CSI2 2:0 [fmt:SBGGR10/1280x800]"
+    media-ctl -d $MDEV -V "Intel IPU6 CSI2 2:1 [fmt:SBGGR10/1280x800]"
+
+Once the media pipeline is configured, desired sensor specific settings
+(such as exposure and gain settings) can be set, using the yavta tool.
+
+e.g
+
+.. code-block:: none
+
+    # and that ov01a10 sensor is connected to i2c bus 3 with address 0x36
+    export SDEV=$(media-ctl -d $MDEV -e "ov01a10 3-0036")
+
+    yavta -w 0x009e0903 400 $SDEV
+    yavta -w 0x009e0913 1000 $SDEV
+    yavta -w 0x009e0911 2000 $SDEV
+
+Once the desired sensor settings are set, frame captures can be done as below.
+
+e.g
+
+.. code-block:: none
+
+    yavta --data-prefix -u -c10 -n5 -I -s 1280x800 --file=/tmp/frame-#.bin \
+            -f SBGGR10 $(media-ctl -d $MDEV -e "Intel IPU6 ISYS Capture 0")
+
+With the above command, 10 frames are captured at 1280x800 resolution with
+sBGGR10 format. The captured frames are available as /tmp/frame-#.bin files.
+
+Here is another example of IPU6 ISYS RAW and metadata capture from camera
+sensor ov2740 on Lenovo X1 Yoga laptop.
+
+.. code-block:: none
+
+    media-ctl -l "\"ov2740 14-0036\":0 -> \"Intel IPU6 CSI2 1\":0[1]"
+    media-ctl -l "\"Intel IPU6 CSI2 1\":1 -> \"Intel IPU6 ISYS Capture 0\":0[5]"
+    media-ctl -l "\"Intel IPU6 CSI2 1\":2 -> \"Intel IPU6 ISYS Capture 1\":0[5]"
+
+    # set routing
+    media-ctl -v -R "\"Intel IPU6 CSI2 1\" [0/0->1/0[1],0/1->2/1[1]]"
+
+    media-ctl -v "\"Intel IPU6 CSI2 1\":0/0 [fmt:SGRBG10/1932x1092]"
+    media-ctl -v "\"Intel IPU6 CSI2 1\":0/1 [fmt:GENERIC_8/97x1]"
+    media-ctl -v "\"Intel IPU6 CSI2 1\":1/0 [fmt:SGRBG10/1932x1092]"
+    media-ctl -v "\"Intel IPU6 CSI2 1\":2/1 [fmt:GENERIC_8/97x1]"
+
+    CAPTURE_DEV=$(media-ctl -e "Intel IPU6 ISYS Capture 0")
+    ./yavta --data-prefix -c100 -n5 -I -s1932x1092 --file=/tmp/frame-#.bin \
+        -f SGRBG10 ${CAPTURE_DEV}
+
+    CAPTURE_META=$(media-ctl -e "Intel IPU6 ISYS Capture 1")
+    ./yavta --data-prefix -c100 -n5 -I -s97x1 -B meta-capture \
+        --file=/tmp/meta-#.bin -f GENERIC_8 ${CAPTURE_META}
+
+References
+==========
+
+.. [#f1] https://git.ideasonboard.org/media-ctl.git
+.. [#f2] https://git.ideasonboard.org/yavta.git
diff --git a/Documentation/admin-guide/media/ipu6_isys_graph.svg b/Documentation/admin-guide/media/ipu6_isys_graph.svg
new file mode 100644
index 000000000000..c8539ef320d2
--- /dev/null
+++ b/Documentation/admin-guide/media/ipu6_isys_graph.svg
@@ -0,0 +1,548 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 2.43.0 (0)
+ -->
+<!-- Title: board Pages: 1 -->
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+<text text-anchor="middle" x="731.49" y="-734.88" font-family="Times,serif" font-size="14.00">Intel IPU6 ISYS Capture 0</text>
+<text text-anchor="middle" x="731.49" y="-719.88" font-family="Times,serif" font-size="14.00">/dev/video0</text>
+</g>
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+<text text-anchor="middle" x="1295.09" y="-741.68" font-family="Times,serif" font-size="14.00">/dev/video1</text>
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+<text text-anchor="middle" x="1017.02" y="-660.27" font-family="Times,serif" font-size="14.00">/dev/video2</text>
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+<text text-anchor="middle" x="1177.72" y="-962.75" font-family="Times,serif" font-size="14.00">/dev/video4</text>
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diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst
index f4bb2605f07e..4120eded9a13 100644
--- a/Documentation/admin-guide/media/v4l-drivers.rst
+++ b/Documentation/admin-guide/media/v4l-drivers.rst
@@ -16,6 +16,7 @@ Video4Linux (V4L) driver-specific documentation
 	imx
 	imx7
 	ipu3
+	ipu6-isys
 	ivtv
 	mgb4
 	omap3isp
-- 
2.39.2


  parent reply	other threads:[~2024-04-16 20:11 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-16 20:10 [PATCH v4 00/19] Intel IPU6 and IPU6 input system drivers Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 01/19] media: ipu6: Add PCI device table header Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 02/19] media: ivsc: csi: Use IPU bridge Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 03/19] media: intel/ipu6: add Intel IPU6 PCI device driver Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 04/19] media: intel/ipu6: add IPU auxiliary devices Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 05/19] media: intel/ipu6: add IPU6 buttress interface driver Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 06/19] media: intel/ipu6: CPD parsing for get firmware components Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 07/19] media: intel/ipu6: add IPU6 DMA mapping API and MMU table Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 08/19] media: intel/ipu6: add syscom interfaces between firmware and driver Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 09/19] media: intel/ipu6: input system ABI " Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 10/19] media: intel/ipu6: add IPU6 CSI2 receiver v4l2 sub-device Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 11/19] media: intel/ipu6: add the CSI2 DPHY implementation Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 12/19] media: intel/ipu6: input system video nodes and buffer queues Sakari Ailus
2024-04-16 20:10 ` [PATCH v4 13/19] media: intel/ipu6: add the main input system driver Sakari Ailus
2024-04-16 20:11 ` [PATCH v4 14/19] media: intel/ipu6: add Kconfig and Makefile Sakari Ailus
2024-04-16 20:11 ` [PATCH v4 15/19] media: Kconfig: Select MEDIA_CONTROLLER for VIDEO_V4L2_SUBDEV_API Sakari Ailus
2024-04-16 20:11 ` [PATCH v4 16/19] MAINTAINERS: add maintainers for Intel IPU6 input system driver Sakari Ailus
2024-04-16 20:11 ` [PATCH v4 17/19] media: intel/ipu6: support line-based metadata capture support Sakari Ailus
2024-04-16 20:11 ` Sakari Ailus [this message]
2024-04-16 20:11 ` [PATCH v4 19/19] Documentation: add documentation of Intel IPU6 driver and hardware overview Sakari Ailus
2024-04-17  7:56 ` [PATCH v4 00/19] Intel IPU6 and IPU6 input system drivers Hans de Goede
2024-04-17  8:34   ` Sakari Ailus
2024-04-17  8:59     ` Hans de Goede
2024-04-17 11:33       ` Bingbu Cao
2024-04-17 12:29       ` Sakari Ailus

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