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* [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1
@ 2020-08-18 10:27 Dafna Hirschfeld
  2020-08-18 10:27 ` [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst Dafna Hirschfeld
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Dafna Hirschfeld @ 2020-08-18 10:27 UTC (permalink / raw)
  To: linux-media
  Cc: laurent.pinchart, dafna.hirschfeld, helen.koike, ezequiel,
	hverkuil, kernel, dafna3, sakari.ailus, linux-rockchip, mchehab,
	tfiga

Two patches that document the rkisp1 driver in the Documentation
directory.

patch 1 adds documentation to the specific metadata formats
used by the driver.

patch 2 adds a documentation of the driver.

The documentation assumes that the patchsets:

"v4l2: add support for colorspace conversion API (CSC) for video capture and subdevices"
https://patchwork.kernel.org/project/linux-media/list/?series=334393

"media: staging: rkisp1: add support to V4L2_CAP_IO_MC"
https://patchwork.kernel.org/cover/11680993/

were accepted and it documents the features that those patchsets add.

changes from v1:
----------------
- limit lines within 80 chars
- rephrasing and fixing issues due to comments

Dafna Hirschfeld (2):
  media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata
    formats in pixfmt-meta-rkisp1.rst
  media: admin-guide: add documentation file rkisp1.rst

 Documentation/admin-guide/media/rkisp1.dot    |  18 ++
 Documentation/admin-guide/media/rkisp1.rst    | 181 ++++++++++++++++++
 .../admin-guide/media/v4l-drivers.rst         |   1 +
 .../userspace-api/media/v4l/meta-formats.rst  |   1 +
 .../media/v4l/pixfmt-meta-rkisp1.rst          |  49 +++++
 .../uapi/v4l/pixfmt-meta-rkisp1-params.rst    |  23 ---
 .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst      |  22 ---
 7 files changed, 250 insertions(+), 45 deletions(-)
 create mode 100644 Documentation/admin-guide/media/rkisp1.dot
 create mode 100644 Documentation/admin-guide/media/rkisp1.rst
 create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
 delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
 delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst

-- 
2.17.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst
  2020-08-18 10:27 [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Dafna Hirschfeld
@ 2020-08-18 10:27 ` Dafna Hirschfeld
  2020-08-25 13:04   ` Helen Koike
  2020-08-18 10:27 ` [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst Dafna Hirschfeld
  2020-09-17 10:52 ` [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Hans Verkuil
  2 siblings, 1 reply; 7+ messages in thread
From: Dafna Hirschfeld @ 2020-08-18 10:27 UTC (permalink / raw)
  To: linux-media
  Cc: laurent.pinchart, dafna.hirschfeld, helen.koike, ezequiel,
	hverkuil, kernel, dafna3, sakari.ailus, linux-rockchip, mchehab,
	tfiga

The metadata formats V4L2_META_FMT_RK_ISP1_PARAMS,
V4L2_META_FMT_RK_ISP1_STAT_3A are currently described in
two files under
drivers/staging/media/rkisp1/Documentation/media/uapi/v4l

This patch moves the description to one file:
Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
The patch also extends the description and adds the rst file to
toctree.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
---
 .../userspace-api/media/v4l/meta-formats.rst  |  1 +
 .../media/v4l/pixfmt-meta-rkisp1.rst          | 49 +++++++++++++++++++
 .../uapi/v4l/pixfmt-meta-rkisp1-params.rst    | 23 ---------
 .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst      | 22 ---------
 4 files changed, 50 insertions(+), 45 deletions(-)
 create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
 delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
 delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst

diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst
index 7dcc4bacbb0c..55a635534bc9 100644
--- a/Documentation/userspace-api/media/v4l/meta-formats.rst
+++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
@@ -21,6 +21,7 @@ These formats are used for the :ref:`metadata` interface only.
 
     pixfmt-meta-d4xx
     pixfmt-meta-intel-ipu3
+    pixfmt-meta-rkisp1
     pixfmt-meta-uvc
     pixfmt-meta-vsp1-hgo
     pixfmt-meta-vsp1-hgt
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
new file mode 100644
index 000000000000..7e43837ed260
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
@@ -0,0 +1,49 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. _v4l2-meta-fmt-params-rkisp1:
+.. _v4l2-meta-fmt-stat-rkisp1:
+
+*****************************************************************************
+V4L2_META_FMT_RK_ISP1_PARAMS ('rk1p'), V4L2_META_FMT_RK_ISP1_STAT_3A ('rk1s')
+*****************************************************************************
+
+Configuration parameters
+========================
+
+The configuration parameters are passed to the
+:ref:`rkisp1_params <rkisp1_params>` metadata output video node, using
+the :c:type:`v4l2_meta_format` interface. The buffer contains
+a single instance of the C structure :c:type:`rkisp1_params_cfg` defined in
+``rkisp1-config.h``. So the structure can be obtained from the buffer by:
+
+.. code-block:: c
+
+	struct rkisp1_params_cfg *params = (struct rkisp1_params_cfg*) buffer;
+
+.. rkisp1_stat_buffer
+
+3A and histogram statistics
+===========================
+
+The ISP1 device collects different statistics over an input Bayer frame.
+Those statistics are obtained from the :ref:`rkisp1_stats <rkisp1_stats>`
+metadata capture video node,
+using the :c:type:`v4l2_meta_format` interface. The buffer contains a single
+instance of the C structure :c:type:`rkisp1_stat_buffer` defined in
+``rkisp1-config.h``. So the structure can be obtained from the buffer by:
+
+.. code-block:: c
+
+	struct rkisp1_stat_buffer *stats = (struct rkisp1_stat_buffer*) buffer;
+
+The statistics collected are Exposure, AWB (Auto-white balance), Histogram and
+AF (Auto-focus). See :c:type:`rkisp1_stat_buffer` for details of the statistics.
+
+The 3A statistics and configuration parameters described here are usually
+consumed and produced by dedicated user space libraries that comprise the
+important tuning tools using software control loop.
+
+rkisp1 uAPI data types
+======================
+
+.. kernel-doc:: drivers/staging/media/rkisp1/uapi/rkisp1-config.h
diff --git a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst b/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
deleted file mode 100644
index 32034e481357..000000000000
--- a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
+++ /dev/null
@@ -1,23 +0,0 @@
-.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
-
-.. _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_params_cfg`, which is defined in
-the ``linux/rkisp1-config.h`` header file.
-
-The parameters consist of multiple modules.
-The module won't be updated if the corresponding bit was not set in module_*_update.
-
-.. kernel-doc:: include/uapi/linux/rkisp1-config.h
-   :functions: rkisp1_params_cfg
diff --git a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst b/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
deleted file mode 100644
index 4ad303f96421..000000000000
--- a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
+++ /dev/null
@@ -1,22 +0,0 @@
-.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
-
-.. _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/rkisp1-config.h`` header file.
-
-.. kernel-doc:: include/uapi/linux/rkisp1-config.h
-   :functions: rkisp1_stat_buffer
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst
  2020-08-18 10:27 [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Dafna Hirschfeld
  2020-08-18 10:27 ` [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst Dafna Hirschfeld
@ 2020-08-18 10:27 ` Dafna Hirschfeld
  2020-08-25 13:04   ` Helen Koike
  2020-09-17 10:52 ` [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Hans Verkuil
  2 siblings, 1 reply; 7+ messages in thread
From: Dafna Hirschfeld @ 2020-08-18 10:27 UTC (permalink / raw)
  To: linux-media
  Cc: laurent.pinchart, dafna.hirschfeld, helen.koike, ezequiel,
	hverkuil, kernel, dafna3, sakari.ailus, linux-rockchip, mchehab,
	tfiga

Add the file 'rkisp1.rst' that documents the rkisp1 driver.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
---
 Documentation/admin-guide/media/rkisp1.dot    |  18 ++
 Documentation/admin-guide/media/rkisp1.rst    | 181 ++++++++++++++++++
 .../admin-guide/media/v4l-drivers.rst         |   1 +
 3 files changed, 200 insertions(+)
 create mode 100644 Documentation/admin-guide/media/rkisp1.dot
 create mode 100644 Documentation/admin-guide/media/rkisp1.rst

diff --git a/Documentation/admin-guide/media/rkisp1.dot b/Documentation/admin-guide/media/rkisp1.dot
new file mode 100644
index 000000000000..54c1953a6130
--- /dev/null
+++ b/Documentation/admin-guide/media/rkisp1.dot
@@ -0,0 +1,18 @@
+digraph board {
+	rankdir=TB
+	n00000001 [label="{{<port0> 0 | <port1> 1} | rkisp1_isp\n/dev/v4l-subdev0 | {<port2> 2 | <port3> 3}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000001:port2 -> n00000006:port0
+	n00000001:port2 -> n00000009:port0
+	n00000001:port3 -> n00000014 [style=bold]
+	n00000006 [label="{{<port0> 0} | rkisp1_resizer_mainpath\n/dev/v4l-subdev1 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000006:port1 -> n0000000c [style=bold]
+	n00000009 [label="{{<port0> 0} | rkisp1_resizer_selfpath\n/dev/v4l-subdev2 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
+	n00000009:port1 -> n00000010 [style=bold]
+	n0000000c [label="rkisp1_mainpath\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
+	n00000010 [label="rkisp1_selfpath\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
+	n00000014 [label="rkisp1_stats\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
+	n00000018 [label="rkisp1_params\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
+	n00000018 -> n00000001:port1 [style=bold]
+	n0000001c [label="{{} | imx219 4-0010\n/dev/v4l-subdev3 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
+	n0000001c:port0 -> n00000001:port0
+}
diff --git a/Documentation/admin-guide/media/rkisp1.rst b/Documentation/admin-guide/media/rkisp1.rst
new file mode 100644
index 000000000000..42e37ed255f6
--- /dev/null
+++ b/Documentation/admin-guide/media/rkisp1.rst
@@ -0,0 +1,181 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+.. include:: <isonum.txt>
+
+=========================================
+Rockchip Image Signal Processor (rkisp1)
+=========================================
+
+Introduction
+============
+
+This file documents the driver for the Rockchip ISP1 that is part of RK3288
+and RK3399 SoCs. The driver is located under drivers/staging/media/rkisp1
+and uses the Media-Controller API.
+
+Topology
+========
+.. _rkisp1_topology_graph:
+
+.. kernel-figure:: rkisp1.dot
+    :alt:   Diagram of the default media pipeline topology
+    :align: center
+
+
+The driver has 4 video devices:
+
+- rkisp1_mainpath: capture device for retrieving images, usually in higher
+  resolution.
+- rkisp1_selfpath: capture device for retrieving images.
+- rkisp1_stats: a metadata capture device that sends statistics.
+- rkisp1_params: a metadata output device that receives parameters
+  configurations from userspace.
+
+The driver has 3 subdevices:
+
+- rkisp1_resizer_mainpath: used to resize and downsample frames for the
+  mainpath capture device.
+- rkisp1_resizer_selfpath: used to resize and downsample frames for the
+  selfpath capture device.
+- rkisp1_isp: is connected to the sensor and is responsible for all the isp
+  operations.
+
+
+rkisp1_mainpath, rkisp1_selfpath - Frames Capture Video Nodes
+-------------------------------------------------------------
+Those are the `mainpath` and `selfpath` capture devices to capture frames.
+Those entities are the DMA engines that write the frames to memory.
+The selfpath video device can capture YUV/RGB formats. Its input is YUV encoded
+stream and it is able to convert it to RGB. The selfpath is not able to
+capture bayer formats.
+The mainpath can capture both bayer and YUV formats but it is not able to
+capture RGB formats.
+Both capture videos support
+the ``V4L2_CAP_IO_MC`` :ref:`capability <device-capabilities>`.
+
+
+rkisp1_resizer_mainpath, rkisp1_resizer_selfpath - Resizers Subdevices Nodes
+----------------------------------------------------------------------------
+Those are resizer entities for the mainpath and the selfpath. Those entities
+can scale the frames up and down and also change the YUV sampling (for example
+YUV4:2:2 -> YUV4:2:0). They also have cropping capability on the sink pad.
+The resizers entities can only operate on YUV:4:2:2 format
+(MEDIA_BUS_FMT_YUYV8_2X8).
+The mainpath capture device supports capturing video in bayer formats. In that
+case the resizer of the mainpath is set to 'bypass' mode - it just forward the
+frame without operating on it.
+
+rkisp1_isp - Image Signal Processing Subdevice Node
+---------------------------------------------------
+This is the isp entity. It is connected to the sensor on sink pad 0 and
+receives the frames using the CSI-2 protocol. It is responsible of configuring
+the CSI-2 protocol. It has a cropping capability on sink pad 0 that is
+connected to the sensor and on source pad 2 connected to the resizer entities.
+Cropping on sink pad 0 defines the image region from the sensor.
+Cropping on source pad 2 defines the region for the Image Stabilizer (IS).
+
+.. _rkisp1_stats:
+
+rkisp1_stats - Statistics Video Node
+------------------------------------
+The statistics video node outputs the 3A (auto focus, auto exposure and auto
+white balance) statistics, and also histogram statistics for the frames that
+are being processed by the rkisp1 to userspace applications.
+Using these data, applications can implement algorithms and re-parameterize
+the driver through the rkisp_params node to improve image quality during a
+video stream.
+The buffer format is defined by struct :c:type:`rkisp1_stat_buffer`, and
+userspace should set
+:ref:`V4L2_META_FMT_RK_ISP1_STAT_3A <v4l2-meta-fmt-stat-rkisp1>` as the
+dataformat.
+
+.. _rkisp1_params:
+
+rkisp1_params - Parameters Video Node
+-------------------------------------
+The rkisp1_params video node receives a set of parameters from userspace
+to be applied to the hardware during a video stream, allowing userspace
+to dynamically modify values such as black level, cross talk corrections
+and others.
+
+The buffer format is defined by struct :c:type:`rkisp1_params_cfg`, and
+userspace should set
+:ref:`V4L2_META_FMT_RK_ISP1_PARAMS <v4l2-meta-fmt-params-rkisp1>` as the
+dataformat.
+
+
+Capturing Video Frames Example
+==============================
+
+In the following example, the sensor connected to pad 0 of 'rkisp1_isp' is
+imx219.
+
+The following commands can be used to capture video from the selfpath video
+node with dimension 900x800 planar format YUV 4:2:2. It uses all cropping
+capabilities possible, (see explanation right below)
+
+.. code-block:: bash
+
+	# set the links
+	"media-ctl" "-d" "platform:rkisp1" "-r"
+	"media-ctl" "-d" "platform:rkisp1" "-l" "'imx219 4-0010':0 -> 'rkisp1_isp':0 [1]"
+	"media-ctl" "-d" "platform:rkisp1" "-l" "'rkisp1_isp':2 -> 'rkisp1_resizer_selfpath':0 [1]"
+	"media-ctl" "-d" "platform:rkisp1" "-l" "'rkisp1_isp':2 -> 'rkisp1_resizer_mainpath':0 [0]"
+
+	# set format for imx219 4-0010:0
+	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"imx219 4-0010":0 [fmt:SRGGB10_1X10/1640x1232]'
+
+	# set format for rkisp1_isp pads:
+	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_isp":0 [fmt:SRGGB10_1X10/1640x1232 crop: (0,0)/1600x1200]'
+	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_isp":2 [fmt:YUYV8_2X8/1600x1200 crop: (0,0)/1500x1100]'
+
+	# set format for rkisp1_resizer_selfpath pads:
+	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_selfpath":0 [fmt:YUYV8_2X8/1500x1100 crop: (300,400)/1400x1000]'
+	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_selfpath":1 [fmt:YUYV8_2X8/900x800]'
+
+	# set format for rkisp1_selfpath:
+	"v4l2-ctl" "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "-v" "width=900,height=800,"
+	"v4l2-ctl" "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "-v" "pixelformat=422P"
+
+	# start streaming:
+	v4l2-ctl "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "--stream-mmap" "--stream-count" "10"
+
+
+In the above example the sensor is configured to bayer format:
+`SRGGB10_1X10/1640x1232`. The rkisp1_isp:0 pad should be configured to the
+same mbus format and dimensions as the sensor, otherwise streaming will fail
+with 'EPIPE' error. So it is also configured to `SRGGB10_1X10/1640x1232`.
+In addition, the rkisp1_isp:0 pad is configured to cropping `(0,0)/1600x1200`.
+
+The cropping dimensions are automatically propagated to be the format of the
+isp source pad `rkisp1_isp:2`. Another cropping operation is configured on
+the isp source pad: `(0,0)/1500x1100`.
+
+The resizer's sink pad `rkisp1_resizer_selfpath` should be configured to format
+`YUYV8_2X8/1500x1100` in order to match the format on the other side of the
+link. In addition a cropping `(300,400)/1400x1000` is configured on it.
+
+The source pad of the resizer, `rkisp1_resizer_selfpath:1` is configured to
+format `YUYV8_2X8/900x800`. That means that the resizer first crop a window
+of `(300,400)/1400x100` from the received frame and then scales this window
+to dimension `900x800`.
+
+Note that the above example does not uses the stats-params control loop.
+Therefore the capture frames will not go through the 3A algorithms and
+probably won't have a good quality, and can even look dark and greenish.
+
+Configuring Quantization
+========================
+
+The driver supports limited and full range quantization on YUV formats,
+where limited is the default.
+To switch between one or the other, userspace should use the Colorspace
+Conversion API (CSC) for subdevices on source pad 2 of the
+isp (`rkisp1_isp:2`). The quantization configured on this pad is the
+quantization of the captured video frames on the mainpath and selfpath
+video nodes.
+Note that the resizer and capture entities will always report
+``V4L2_QUANTIZATION_DEFAULT`` even if the quantization is configured to full
+range on `rkisp1_isp:2`. So in order to get the configured quantization,
+application should get it from pad `rkisp1_isp:2`.
+
diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst
index 251cc4ede0b6..9c7ebe2ca3bd 100644
--- a/Documentation/admin-guide/media/v4l-drivers.rst
+++ b/Documentation/admin-guide/media/v4l-drivers.rst
@@ -25,6 +25,7 @@ Video4Linux (V4L) driver-specific documentation
 	philips
 	qcom_camss
 	rcar-fdp1
+	rkisp1
 	saa7134
 	si470x
 	si4713
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* Re: [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst
  2020-08-18 10:27 ` [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst Dafna Hirschfeld
@ 2020-08-25 13:04   ` Helen Koike
  0 siblings, 0 replies; 7+ messages in thread
From: Helen Koike @ 2020-08-25 13:04 UTC (permalink / raw)
  To: Dafna Hirschfeld, linux-media
  Cc: laurent.pinchart, ezequiel, hverkuil, kernel, dafna3,
	sakari.ailus, linux-rockchip, mchehab, tfiga



On 8/18/20 7:27 AM, Dafna Hirschfeld wrote:
> The metadata formats V4L2_META_FMT_RK_ISP1_PARAMS,
> V4L2_META_FMT_RK_ISP1_STAT_3A are currently described in
> two files under
> drivers/staging/media/rkisp1/Documentation/media/uapi/v4l
> 
> This patch moves the description to one file:
> Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
> The patch also extends the description and adds the rst file to
> toctree.
> 
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>

lgtm

Acked-by: Helen Koike <helen.koike@collabora.com>

Thanks!
Helen

> ---
>  .../userspace-api/media/v4l/meta-formats.rst  |  1 +
>  .../media/v4l/pixfmt-meta-rkisp1.rst          | 49 +++++++++++++++++++
>  .../uapi/v4l/pixfmt-meta-rkisp1-params.rst    | 23 ---------
>  .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst      | 22 ---------
>  4 files changed, 50 insertions(+), 45 deletions(-)
>  create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
>  delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
>  delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
> 
> diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst
> index 7dcc4bacbb0c..55a635534bc9 100644
> --- a/Documentation/userspace-api/media/v4l/meta-formats.rst
> +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
> @@ -21,6 +21,7 @@ These formats are used for the :ref:`metadata` interface only.
>  
>      pixfmt-meta-d4xx
>      pixfmt-meta-intel-ipu3
> +    pixfmt-meta-rkisp1
>      pixfmt-meta-uvc
>      pixfmt-meta-vsp1-hgo
>      pixfmt-meta-vsp1-hgt
> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
> new file mode 100644
> index 000000000000..7e43837ed260
> --- /dev/null
> +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
> @@ -0,0 +1,49 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +.. _v4l2-meta-fmt-params-rkisp1:
> +.. _v4l2-meta-fmt-stat-rkisp1:
> +
> +*****************************************************************************
> +V4L2_META_FMT_RK_ISP1_PARAMS ('rk1p'), V4L2_META_FMT_RK_ISP1_STAT_3A ('rk1s')
> +*****************************************************************************
> +
> +Configuration parameters
> +========================
> +
> +The configuration parameters are passed to the
> +:ref:`rkisp1_params <rkisp1_params>` metadata output video node, using
> +the :c:type:`v4l2_meta_format` interface. The buffer contains
> +a single instance of the C structure :c:type:`rkisp1_params_cfg` defined in
> +``rkisp1-config.h``. So the structure can be obtained from the buffer by:
> +
> +.. code-block:: c
> +
> +	struct rkisp1_params_cfg *params = (struct rkisp1_params_cfg*) buffer;
> +
> +.. rkisp1_stat_buffer
> +
> +3A and histogram statistics
> +===========================
> +
> +The ISP1 device collects different statistics over an input Bayer frame.
> +Those statistics are obtained from the :ref:`rkisp1_stats <rkisp1_stats>`
> +metadata capture video node,
> +using the :c:type:`v4l2_meta_format` interface. The buffer contains a single
> +instance of the C structure :c:type:`rkisp1_stat_buffer` defined in
> +``rkisp1-config.h``. So the structure can be obtained from the buffer by:
> +
> +.. code-block:: c
> +
> +	struct rkisp1_stat_buffer *stats = (struct rkisp1_stat_buffer*) buffer;
> +
> +The statistics collected are Exposure, AWB (Auto-white balance), Histogram and
> +AF (Auto-focus). See :c:type:`rkisp1_stat_buffer` for details of the statistics.
> +
> +The 3A statistics and configuration parameters described here are usually
> +consumed and produced by dedicated user space libraries that comprise the
> +important tuning tools using software control loop.
> +
> +rkisp1 uAPI data types
> +======================
> +
> +.. kernel-doc:: drivers/staging/media/rkisp1/uapi/rkisp1-config.h
> diff --git a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst b/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
> deleted file mode 100644
> index 32034e481357..000000000000
> --- a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
> +++ /dev/null
> @@ -1,23 +0,0 @@
> -.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> -
> -.. _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_params_cfg`, which is defined in
> -the ``linux/rkisp1-config.h`` header file.
> -
> -The parameters consist of multiple modules.
> -The module won't be updated if the corresponding bit was not set in module_*_update.
> -
> -.. kernel-doc:: include/uapi/linux/rkisp1-config.h
> -   :functions: rkisp1_params_cfg
> diff --git a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst b/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
> deleted file mode 100644
> index 4ad303f96421..000000000000
> --- a/drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
> +++ /dev/null
> @@ -1,22 +0,0 @@
> -.. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> -
> -.. _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/rkisp1-config.h`` header file.
> -
> -.. kernel-doc:: include/uapi/linux/rkisp1-config.h
> -   :functions: rkisp1_stat_buffer
> 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst
  2020-08-18 10:27 ` [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst Dafna Hirschfeld
@ 2020-08-25 13:04   ` Helen Koike
  0 siblings, 0 replies; 7+ messages in thread
From: Helen Koike @ 2020-08-25 13:04 UTC (permalink / raw)
  To: Dafna Hirschfeld, linux-media
  Cc: laurent.pinchart, ezequiel, hverkuil, kernel, dafna3,
	sakari.ailus, linux-rockchip, mchehab, tfiga



On 8/18/20 7:27 AM, Dafna Hirschfeld wrote:
> Add the file 'rkisp1.rst' that documents the rkisp1 driver.
> 
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>

lgtm

Acked-by: Helen Koike <helen.koike@collabora.com>

Thanks!
Helen


> ---
>  Documentation/admin-guide/media/rkisp1.dot    |  18 ++
>  Documentation/admin-guide/media/rkisp1.rst    | 181 ++++++++++++++++++
>  .../admin-guide/media/v4l-drivers.rst         |   1 +
>  3 files changed, 200 insertions(+)
>  create mode 100644 Documentation/admin-guide/media/rkisp1.dot
>  create mode 100644 Documentation/admin-guide/media/rkisp1.rst
> 
> diff --git a/Documentation/admin-guide/media/rkisp1.dot b/Documentation/admin-guide/media/rkisp1.dot
> new file mode 100644
> index 000000000000..54c1953a6130
> --- /dev/null
> +++ b/Documentation/admin-guide/media/rkisp1.dot
> @@ -0,0 +1,18 @@
> +digraph board {
> +	rankdir=TB
> +	n00000001 [label="{{<port0> 0 | <port1> 1} | rkisp1_isp\n/dev/v4l-subdev0 | {<port2> 2 | <port3> 3}}", shape=Mrecord, style=filled, fillcolor=green]
> +	n00000001:port2 -> n00000006:port0
> +	n00000001:port2 -> n00000009:port0
> +	n00000001:port3 -> n00000014 [style=bold]
> +	n00000006 [label="{{<port0> 0} | rkisp1_resizer_mainpath\n/dev/v4l-subdev1 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
> +	n00000006:port1 -> n0000000c [style=bold]
> +	n00000009 [label="{{<port0> 0} | rkisp1_resizer_selfpath\n/dev/v4l-subdev2 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
> +	n00000009:port1 -> n00000010 [style=bold]
> +	n0000000c [label="rkisp1_mainpath\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
> +	n00000010 [label="rkisp1_selfpath\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
> +	n00000014 [label="rkisp1_stats\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
> +	n00000018 [label="rkisp1_params\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
> +	n00000018 -> n00000001:port1 [style=bold]
> +	n0000001c [label="{{} | imx219 4-0010\n/dev/v4l-subdev3 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
> +	n0000001c:port0 -> n00000001:port0
> +}
> diff --git a/Documentation/admin-guide/media/rkisp1.rst b/Documentation/admin-guide/media/rkisp1.rst
> new file mode 100644
> index 000000000000..42e37ed255f6
> --- /dev/null
> +++ b/Documentation/admin-guide/media/rkisp1.rst
> @@ -0,0 +1,181 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +.. include:: <isonum.txt>
> +
> +=========================================
> +Rockchip Image Signal Processor (rkisp1)
> +=========================================
> +
> +Introduction
> +============
> +
> +This file documents the driver for the Rockchip ISP1 that is part of RK3288
> +and RK3399 SoCs. The driver is located under drivers/staging/media/rkisp1
> +and uses the Media-Controller API.
> +
> +Topology
> +========
> +.. _rkisp1_topology_graph:
> +
> +.. kernel-figure:: rkisp1.dot
> +    :alt:   Diagram of the default media pipeline topology
> +    :align: center
> +
> +
> +The driver has 4 video devices:
> +
> +- rkisp1_mainpath: capture device for retrieving images, usually in higher
> +  resolution.
> +- rkisp1_selfpath: capture device for retrieving images.
> +- rkisp1_stats: a metadata capture device that sends statistics.
> +- rkisp1_params: a metadata output device that receives parameters
> +  configurations from userspace.
> +
> +The driver has 3 subdevices:
> +
> +- rkisp1_resizer_mainpath: used to resize and downsample frames for the
> +  mainpath capture device.
> +- rkisp1_resizer_selfpath: used to resize and downsample frames for the
> +  selfpath capture device.
> +- rkisp1_isp: is connected to the sensor and is responsible for all the isp
> +  operations.
> +
> +
> +rkisp1_mainpath, rkisp1_selfpath - Frames Capture Video Nodes
> +-------------------------------------------------------------
> +Those are the `mainpath` and `selfpath` capture devices to capture frames.
> +Those entities are the DMA engines that write the frames to memory.
> +The selfpath video device can capture YUV/RGB formats. Its input is YUV encoded
> +stream and it is able to convert it to RGB. The selfpath is not able to
> +capture bayer formats.
> +The mainpath can capture both bayer and YUV formats but it is not able to
> +capture RGB formats.
> +Both capture videos support
> +the ``V4L2_CAP_IO_MC`` :ref:`capability <device-capabilities>`.
> +
> +
> +rkisp1_resizer_mainpath, rkisp1_resizer_selfpath - Resizers Subdevices Nodes
> +----------------------------------------------------------------------------
> +Those are resizer entities for the mainpath and the selfpath. Those entities
> +can scale the frames up and down and also change the YUV sampling (for example
> +YUV4:2:2 -> YUV4:2:0). They also have cropping capability on the sink pad.
> +The resizers entities can only operate on YUV:4:2:2 format
> +(MEDIA_BUS_FMT_YUYV8_2X8).
> +The mainpath capture device supports capturing video in bayer formats. In that
> +case the resizer of the mainpath is set to 'bypass' mode - it just forward the
> +frame without operating on it.
> +
> +rkisp1_isp - Image Signal Processing Subdevice Node
> +---------------------------------------------------
> +This is the isp entity. It is connected to the sensor on sink pad 0 and
> +receives the frames using the CSI-2 protocol. It is responsible of configuring
> +the CSI-2 protocol. It has a cropping capability on sink pad 0 that is
> +connected to the sensor and on source pad 2 connected to the resizer entities.
> +Cropping on sink pad 0 defines the image region from the sensor.
> +Cropping on source pad 2 defines the region for the Image Stabilizer (IS).
> +
> +.. _rkisp1_stats:
> +
> +rkisp1_stats - Statistics Video Node
> +------------------------------------
> +The statistics video node outputs the 3A (auto focus, auto exposure and auto
> +white balance) statistics, and also histogram statistics for the frames that
> +are being processed by the rkisp1 to userspace applications.
> +Using these data, applications can implement algorithms and re-parameterize
> +the driver through the rkisp_params node to improve image quality during a
> +video stream.
> +The buffer format is defined by struct :c:type:`rkisp1_stat_buffer`, and
> +userspace should set
> +:ref:`V4L2_META_FMT_RK_ISP1_STAT_3A <v4l2-meta-fmt-stat-rkisp1>` as the
> +dataformat.
> +
> +.. _rkisp1_params:
> +
> +rkisp1_params - Parameters Video Node
> +-------------------------------------
> +The rkisp1_params video node receives a set of parameters from userspace
> +to be applied to the hardware during a video stream, allowing userspace
> +to dynamically modify values such as black level, cross talk corrections
> +and others.
> +
> +The buffer format is defined by struct :c:type:`rkisp1_params_cfg`, and
> +userspace should set
> +:ref:`V4L2_META_FMT_RK_ISP1_PARAMS <v4l2-meta-fmt-params-rkisp1>` as the
> +dataformat.
> +
> +
> +Capturing Video Frames Example
> +==============================
> +
> +In the following example, the sensor connected to pad 0 of 'rkisp1_isp' is
> +imx219.
> +
> +The following commands can be used to capture video from the selfpath video
> +node with dimension 900x800 planar format YUV 4:2:2. It uses all cropping
> +capabilities possible, (see explanation right below)
> +
> +.. code-block:: bash
> +
> +	# set the links
> +	"media-ctl" "-d" "platform:rkisp1" "-r"
> +	"media-ctl" "-d" "platform:rkisp1" "-l" "'imx219 4-0010':0 -> 'rkisp1_isp':0 [1]"
> +	"media-ctl" "-d" "platform:rkisp1" "-l" "'rkisp1_isp':2 -> 'rkisp1_resizer_selfpath':0 [1]"
> +	"media-ctl" "-d" "platform:rkisp1" "-l" "'rkisp1_isp':2 -> 'rkisp1_resizer_mainpath':0 [0]"
> +
> +	# set format for imx219 4-0010:0
> +	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"imx219 4-0010":0 [fmt:SRGGB10_1X10/1640x1232]'
> +
> +	# set format for rkisp1_isp pads:
> +	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_isp":0 [fmt:SRGGB10_1X10/1640x1232 crop: (0,0)/1600x1200]'
> +	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_isp":2 [fmt:YUYV8_2X8/1600x1200 crop: (0,0)/1500x1100]'
> +
> +	# set format for rkisp1_resizer_selfpath pads:
> +	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_selfpath":0 [fmt:YUYV8_2X8/1500x1100 crop: (300,400)/1400x1000]'
> +	"media-ctl" "-d" "platform:rkisp1" "--set-v4l2" '"rkisp1_resizer_selfpath":1 [fmt:YUYV8_2X8/900x800]'
> +
> +	# set format for rkisp1_selfpath:
> +	"v4l2-ctl" "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "-v" "width=900,height=800,"
> +	"v4l2-ctl" "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "-v" "pixelformat=422P"
> +
> +	# start streaming:
> +	v4l2-ctl "-z" "platform:rkisp1" "-d" "rkisp1_selfpath" "--stream-mmap" "--stream-count" "10"
> +
> +
> +In the above example the sensor is configured to bayer format:
> +`SRGGB10_1X10/1640x1232`. The rkisp1_isp:0 pad should be configured to the
> +same mbus format and dimensions as the sensor, otherwise streaming will fail
> +with 'EPIPE' error. So it is also configured to `SRGGB10_1X10/1640x1232`.
> +In addition, the rkisp1_isp:0 pad is configured to cropping `(0,0)/1600x1200`.
> +
> +The cropping dimensions are automatically propagated to be the format of the
> +isp source pad `rkisp1_isp:2`. Another cropping operation is configured on
> +the isp source pad: `(0,0)/1500x1100`.
> +
> +The resizer's sink pad `rkisp1_resizer_selfpath` should be configured to format
> +`YUYV8_2X8/1500x1100` in order to match the format on the other side of the
> +link. In addition a cropping `(300,400)/1400x1000` is configured on it.
> +
> +The source pad of the resizer, `rkisp1_resizer_selfpath:1` is configured to
> +format `YUYV8_2X8/900x800`. That means that the resizer first crop a window
> +of `(300,400)/1400x100` from the received frame and then scales this window
> +to dimension `900x800`.
> +
> +Note that the above example does not uses the stats-params control loop.
> +Therefore the capture frames will not go through the 3A algorithms and
> +probably won't have a good quality, and can even look dark and greenish.
> +
> +Configuring Quantization
> +========================
> +
> +The driver supports limited and full range quantization on YUV formats,
> +where limited is the default.
> +To switch between one or the other, userspace should use the Colorspace
> +Conversion API (CSC) for subdevices on source pad 2 of the
> +isp (`rkisp1_isp:2`). The quantization configured on this pad is the
> +quantization of the captured video frames on the mainpath and selfpath
> +video nodes.
> +Note that the resizer and capture entities will always report
> +``V4L2_QUANTIZATION_DEFAULT`` even if the quantization is configured to full
> +range on `rkisp1_isp:2`. So in order to get the configured quantization,
> +application should get it from pad `rkisp1_isp:2`.
> +
> diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst
> index 251cc4ede0b6..9c7ebe2ca3bd 100644
> --- a/Documentation/admin-guide/media/v4l-drivers.rst
> +++ b/Documentation/admin-guide/media/v4l-drivers.rst
> @@ -25,6 +25,7 @@ Video4Linux (V4L) driver-specific documentation
>  	philips
>  	qcom_camss
>  	rcar-fdp1
> +	rkisp1
>  	saa7134
>  	si470x
>  	si4713
> 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1
  2020-08-18 10:27 [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Dafna Hirschfeld
  2020-08-18 10:27 ` [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst Dafna Hirschfeld
  2020-08-18 10:27 ` [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst Dafna Hirschfeld
@ 2020-09-17 10:52 ` Hans Verkuil
  2020-09-17 15:06   ` Dafna Hirschfeld
  2 siblings, 1 reply; 7+ messages in thread
From: Hans Verkuil @ 2020-09-17 10:52 UTC (permalink / raw)
  To: Dafna Hirschfeld, linux-media
  Cc: laurent.pinchart, helen.koike, ezequiel, kernel, dafna3,
	sakari.ailus, linux-rockchip, mchehab, tfiga

On 18/08/2020 12:27, Dafna Hirschfeld wrote:
> Two patches that document the rkisp1 driver in the Documentation
> directory.
> 
> patch 1 adds documentation to the specific metadata formats
> used by the driver.
> 
> patch 2 adds a documentation of the driver.
> 
> The documentation assumes that the patchsets:
> 
> "v4l2: add support for colorspace conversion API (CSC) for video capture and subdevices"
> https://patchwork.kernel.org/project/linux-media/list/?series=334393
> 
> "media: staging: rkisp1: add support to V4L2_CAP_IO_MC"
> https://patchwork.kernel.org/cover/11680993/

The MAINTAINERS file needs to be updated for these new doc files. Just post a new patch for
this, no need for a v3.

Regards,

	Hans

> 
> were accepted and it documents the features that those patchsets add.
> 
> changes from v1:
> ----------------
> - limit lines within 80 chars
> - rephrasing and fixing issues due to comments
> 
> Dafna Hirschfeld (2):
>   media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata
>     formats in pixfmt-meta-rkisp1.rst
>   media: admin-guide: add documentation file rkisp1.rst
> 
>  Documentation/admin-guide/media/rkisp1.dot    |  18 ++
>  Documentation/admin-guide/media/rkisp1.rst    | 181 ++++++++++++++++++
>  .../admin-guide/media/v4l-drivers.rst         |   1 +
>  .../userspace-api/media/v4l/meta-formats.rst  |   1 +
>  .../media/v4l/pixfmt-meta-rkisp1.rst          |  49 +++++
>  .../uapi/v4l/pixfmt-meta-rkisp1-params.rst    |  23 ---
>  .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst      |  22 ---
>  7 files changed, 250 insertions(+), 45 deletions(-)
>  create mode 100644 Documentation/admin-guide/media/rkisp1.dot
>  create mode 100644 Documentation/admin-guide/media/rkisp1.rst
>  create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
>  delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
>  delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
> 


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1
  2020-09-17 10:52 ` [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Hans Verkuil
@ 2020-09-17 15:06   ` Dafna Hirschfeld
  0 siblings, 0 replies; 7+ messages in thread
From: Dafna Hirschfeld @ 2020-09-17 15:06 UTC (permalink / raw)
  To: Hans Verkuil, linux-media
  Cc: laurent.pinchart, helen.koike, ezequiel, kernel, dafna3,
	sakari.ailus, linux-rockchip, mchehab, tfiga



Am 17.09.20 um 12:52 schrieb Hans Verkuil:
> On 18/08/2020 12:27, Dafna Hirschfeld wrote:
>> Two patches that document the rkisp1 driver in the Documentation
>> directory.
>>
>> patch 1 adds documentation to the specific metadata formats
>> used by the driver.
>>
>> patch 2 adds a documentation of the driver.
>>
>> The documentation assumes that the patchsets:
>>
>> "v4l2: add support for colorspace conversion API (CSC) for video capture and subdevices"
>> https://patchwork.kernel.org/project/linux-media/list/?series=334393
>>
>> "media: staging: rkisp1: add support to V4L2_CAP_IO_MC"
>> https://patchwork.kernel.org/cover/11680993/
> 
> The MAINTAINERS file needs to be updated for these new doc files. Just post a new patch for
> this, no need for a v3.

Done,

thanks,
Dafna

> 
> Regards,
> 
> 	Hans
> 
>>
>> were accepted and it documents the features that those patchsets add.
>>
>> changes from v1:
>> ----------------
>> - limit lines within 80 chars
>> - rephrasing and fixing issues due to comments
>>
>> Dafna Hirschfeld (2):
>>    media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata
>>      formats in pixfmt-meta-rkisp1.rst
>>    media: admin-guide: add documentation file rkisp1.rst
>>
>>   Documentation/admin-guide/media/rkisp1.dot    |  18 ++
>>   Documentation/admin-guide/media/rkisp1.rst    | 181 ++++++++++++++++++
>>   .../admin-guide/media/v4l-drivers.rst         |   1 +
>>   .../userspace-api/media/v4l/meta-formats.rst  |   1 +
>>   .../media/v4l/pixfmt-meta-rkisp1.rst          |  49 +++++
>>   .../uapi/v4l/pixfmt-meta-rkisp1-params.rst    |  23 ---
>>   .../uapi/v4l/pixfmt-meta-rkisp1-stat.rst      |  22 ---
>>   7 files changed, 250 insertions(+), 45 deletions(-)
>>   create mode 100644 Documentation/admin-guide/media/rkisp1.dot
>>   create mode 100644 Documentation/admin-guide/media/rkisp1.rst
>>   create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
>>   delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-params.rst
>>   delete mode 100644 drivers/staging/media/rkisp1/Documentation/media/uapi/v4l/pixfmt-meta-rkisp1-stat.rst
>>
> 

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2020-09-17 15:06 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-18 10:27 [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Dafna Hirschfeld
2020-08-18 10:27 ` [PATCH v2 1/2] media: pixfmt-meta-rkisp1.rst: add description of rkisp1 metadata formats in pixfmt-meta-rkisp1.rst Dafna Hirschfeld
2020-08-25 13:04   ` Helen Koike
2020-08-18 10:27 ` [PATCH v2 2/2] media: admin-guide: add documentation file rkisp1.rst Dafna Hirschfeld
2020-08-25 13:04   ` Helen Koike
2020-09-17 10:52 ` [PATCH v2 0/2] media: admin-guide: add documentation for rkisp1 Hans Verkuil
2020-09-17 15:06   ` Dafna Hirschfeld

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