[PATCH v8 0/5] Add Toshiba Visconti Video Input Interface driver

[PATCH v8 0/5] Add Toshiba Visconti Video Input Interface driver

[Yuji Ishikawa]

This series is the Video Input Interface driver
for Toshiba's ARM SoC, Visconti.
This provides DT binding documentation,
device driver, documentation and MAINTAINER files.

A visconti VIIF driver instance exposes
1 media control device file and 3 video device files
for a VIIF hardware.
Detailed HW/SW are described in documentation directory.
The VIIF hardware has CSI2 receiver,
image signal processor and DMAC inside.
The subdevice for image signal processor provides
vendor specific V4L2 controls.

The device driver depends on two other drivers under development;
clock framework driver and IOMMU driver.
Corresponding features will be added later.

Best regards,
Yuji

Changelog v2:
- Resend v1 because a patch exceeds size limit.

Changelog v3:
- Add documentation to describe SW and HW
- Adapted to media control framework
- Introduced ISP subdevice, capture device
- Remove private IOCTLs and add vendor specific V4L2 controls
- Change function name avoiding camelcase and uppercase letters

Changelog v4:
- Split patches because a patch exceeds size limit
- fix dt-bindings document
- stop specifying ID numbers for driver instance explicitly at device tree
- use pm_runtime to trigger initialization of HW
  along with open/close of device files.
- add a entry for a header file at MAINTAINERS file

Changelog v5:
- Fix coding style problem in viif.c (patch 2/6)

Changelog v6:
- add register definition of BUS-IF and MPU in dt-bindings
- add CSI2RX subdevice (separeted from ISP subdevice)
- change directory layout (moved to media/platform/toshiba/visconti)
- change source file layout (removed hwd_xxxx.c)
- pointer to userland memory is removed from uAPI parameters
- change register access (from struct style to macro style)
- remove unused macros

Changelog v7:
- remove redundant "bindings" from header and description text
- fix multiline text of "description"
- change "compatible" to "visconti5-viif"
- explicitly define allowed properties for port::endpoint
- remove unused variables
- update kerneldoc comments
- update references to headers

Changelog v8:
- rename bindings description file
- remove/simplify items in bindings
- update operations around v4l2_async_notifier
- use v4l2_async_connection instead of v4l2_async_subdev
- use dev_err_probe()
- better error handling at probe
- remove redundant mutex
- add V4L2_CTRL_TYPE_VISCONTI_ISP constant

Yuji Ishikawa (5):
  dt-bindings: media: platform: visconti: Add Toshiba Visconti Video
    Input Interface
  media: platform: visconti: Add Toshiba Visconti Video Input Interface
    driver
  media: add V4L2 vendor specific control handlers
  documentation: media: add documentation for Toshiba Visconti Video
    Input Interface driver
  MAINTAINERS: Add entries for Toshiba Visconti Video Input Interface

 .../media/toshiba,visconti5-viif.yaml         |  105 +
 .../driver-api/media/drivers/index.rst        |    1 +
 .../media/drivers/visconti-viif.rst           |  462 +++
 .../media/v4l/vidioc-g-ext-ctrls.rst          |    4 +
 .../media/v4l/vidioc-queryctrl.rst            |    5 +
 MAINTAINERS                                   |    4 +
 drivers/media/platform/Kconfig                |    1 +
 drivers/media/platform/Makefile               |    1 +
 drivers/media/platform/toshiba/Kconfig        |    6 +
 drivers/media/platform/toshiba/Makefile       |    2 +
 .../media/platform/toshiba/visconti/Kconfig   |   18 +
 .../media/platform/toshiba/visconti/Makefile  |    8 +
 .../media/platform/toshiba/visconti/viif.c    |  650 ++++
 .../media/platform/toshiba/visconti/viif.h    |  374 ++
 .../platform/toshiba/visconti/viif_capture.c  | 1489 ++++++++
 .../platform/toshiba/visconti/viif_capture.h  |   22 +
 .../platform/toshiba/visconti/viif_common.c   |  199 +
 .../platform/toshiba/visconti/viif_common.h   |   38 +
 .../platform/toshiba/visconti/viif_controls.c | 3394 +++++++++++++++++
 .../platform/toshiba/visconti/viif_controls.h |   18 +
 .../platform/toshiba/visconti/viif_csi2rx.c   |  691 ++++
 .../platform/toshiba/visconti/viif_csi2rx.h   |   24 +
 .../toshiba/visconti/viif_csi2rx_regs.h       |  102 +
 .../platform/toshiba/visconti/viif_isp.c      | 1259 ++++++
 .../platform/toshiba/visconti/viif_isp.h      |   24 +
 .../platform/toshiba/visconti/viif_regs.h     |  716 ++++
 drivers/media/v4l2-core/v4l2-ctrls-core.c     |    7 +-
 include/uapi/linux/v4l2-controls.h            |    6 +
 include/uapi/linux/videodev2.h                |    2 +
 include/uapi/linux/visconti_viif.h            | 1800 +++++++++
 30 files changed, 11431 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml
 create mode 100644 Documentation/driver-api/media/drivers/visconti-viif.rst
 create mode 100644 drivers/media/platform/toshiba/Kconfig
 create mode 100644 drivers/media/platform/toshiba/Makefile
 create mode 100644 drivers/media/platform/toshiba/visconti/Kconfig
 create mode 100644 drivers/media/platform/toshiba/visconti/Makefile
 create mode 100644 drivers/media/platform/toshiba/visconti/viif.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_capture.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_capture.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_common.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_common.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_controls.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_controls.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx_regs.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.c
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.h
 create mode 100644 drivers/media/platform/toshiba/visconti/viif_regs.h
 create mode 100644 include/uapi/linux/visconti_viif.h

-- 
2.34.1



_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface

[Yuji Ishikawa]

Adds the Device Tree binding documentation that allows to describe
the Video Input Interface found in Toshiba Visconti SoCs.

Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
---
Changelog v2:
- no change

Changelog v3:
- no change

Changelog v4:
- fix style problems at the v3 patch
- remove "index" member
- update example

Changelog v5:
- no change

Changelog v6:
- add register definition of BUS-IF and MPU

Changelog v7:
- remove trailing "bindings" from commit header message
- remove trailing "Device Tree Bindings" from title
- fix text wrapping of description
- change compatible to visconti5-viif
- explicitly define allowed properties for port::endpoint

Changelog v8:
- Suggestion from Krzysztof Kozlowski
  - rename bindings description file
  - use block style array instead of inline style
  - remove clock-lane (as it is fixed at position 0)
  - update sample node's name
  - use lowercase hex for literals
- Suggestion from Laurent Pinchart
  - update description message port::description
  - remove port::endpoint::bus-type as it is fixed to <4>
  - remove port::endpoint::clock-lanes from example
  - add port::endpoint::data-lanes to required parameters list
  - fix sequence of data-lanes: <1 2 3 4> because current driver does not support data reordering
  - update port::endpoint::data-lanes::description
  - remove redundant type definition for port::endpoint::data-lanes

 .../media/toshiba,visconti5-viif.yaml         | 105 ++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml

diff --git a/Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml b/Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml
new file mode 100644
index 000000000000..7ac1f5c5e9d5
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/toshiba,visconti5-viif.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toshiba Visconti5 SoC Video Input Interface
+
+maintainers:
+  - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
+
+description: |-
+  Toshiba Visconti5 SoC Video Input Interface (VIIF) receives MIPI CSI2 video
+  stream, processes the stream with image signal processors (L1ISP, L2ISP),
+  then stores pictures to main memory.
+
+properties:
+  compatible:
+    const: toshiba,visconti5-viif
+
+  reg:
+    items:
+      - description: Registers for capture control
+      - description: Registers for CSI2 receiver control
+      - description: Registers for bus interface unit control
+      - description: Registers for Memory Protection Unit
+
+  interrupts:
+    items:
+      - description: Sync Interrupt
+      - description: Status (Error) Interrupt
+      - description: CSI2 Receiver Interrupt
+      - description: L1ISP Interrupt
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    unevaluatedProperties: false
+    description: CSI-2 input port, with a single endpoint connected to the CSI-2 transmitter.
+
+    properties:
+      endpoint:
+        $ref: video-interfaces.yaml#
+        additionalProperties: false
+
+        required:
+          - clock-noncontinuous
+          - link-frequencies
+          - remote-endpoint
+          - data-lanes
+
+        properties:
+          data-lanes:
+            description: VIIF supports 1, 2, 3 or 4 data lanes
+            minItems: 1
+            items:
+              - const: 1
+              - const: 2
+              - const: 3
+              - const: 4
+
+          clock-noncontinuous: true
+          link-frequencies: true
+          remote-endpoint: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        video@1c000000 {
+            compatible = "toshiba,visconti5-viif";
+            reg = <0 0x1c000000 0 0x6000>,
+                  <0 0x1c008000 0 0x400>,
+                  <0 0x1c00e000 0 0x1000>,
+                  <0 0x2417a000 0 0x1000>;
+            interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+
+            port {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                csi_in0: endpoint {
+                    remote-endpoint = <&imx219_out0>;
+                    data-lanes = <1 2>;
+                    clock-noncontinuous;
+                    link-frequencies = /bits/ 64 <456000000>;
+                };
+            };
+        };
+    };
-- 
2.34.1



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[PATCH v8 4/5] documentation: media: add documentation for Toshiba Visconti Video Input Interface driver

[Yuji Ishikawa]

Added basic description of Video Input Interface driver of
Toshiba Visconti architecture.
It includes hardware organization, structure of the driver
and description of vendor specific V4L2 controls
to configure the embedded image signal processor.

Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
---
Changelog v3:
- Newly add documentation to describe SW and HW

Changelog v4:
- no change

Changelog v5:
- no change

Changelog v6:
- add description of CSI2RX subdevice
- add ordering of ioctl(S_FMT) and ioctl(S_EXT_CTRLS)

Changelog v7:
- no change

Changelog v8:
- add usage of V4L2_CTRL_TYPE_VISCONTI_ISP

 .../driver-api/media/drivers/index.rst        |   1 +
 .../media/drivers/visconti-viif.rst           | 462 ++++++++++++++++++
 .../media/v4l/vidioc-g-ext-ctrls.rst          |   4 +
 .../media/v4l/vidioc-queryctrl.rst            |   5 +
 4 files changed, 472 insertions(+)
 create mode 100644 Documentation/driver-api/media/drivers/visconti-viif.rst

diff --git a/Documentation/driver-api/media/drivers/index.rst b/Documentation/driver-api/media/drivers/index.rst
index c4123a16b5f9..5592bd99ae5c 100644
--- a/Documentation/driver-api/media/drivers/index.rst
+++ b/Documentation/driver-api/media/drivers/index.rst
@@ -24,6 +24,7 @@ Video4Linux (V4L) drivers
 	sh_mobile_ceu_camera
 	tuners
 	vimc-devel
+	visconti-viif
 	zoran
 	ccs/ccs
 
diff --git a/Documentation/driver-api/media/drivers/visconti-viif.rst b/Documentation/driver-api/media/drivers/visconti-viif.rst
new file mode 100644
index 000000000000..fd2480cbde46
--- /dev/null
+++ b/Documentation/driver-api/media/drivers/visconti-viif.rst
@@ -0,0 +1,462 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============================================
+Visconti Video Input Interface (VIIF) Driver
+============================================
+
+Overview
+========
+
+The Visconti VIIF Hardware
+--------------------------
+
+The Visconti Video Input Interface (VIIF) hardware is  a proprietary videocapture device of Toshiba.
+Following function modules are integrated:
+
+* MIPI CSI2 receiver (CSI2RX)
+* L1 Image Signal Processor (L1ISP)
+
+  * Correction, enhancement, adjustment on RAW pictures.
+
+* L2 Image Signal Processor (L2ISP)
+
+  * Lens distortion correction
+  * Scaling
+  * Cropping
+
+* Video DMAC
+
+  * format picture (RGB, YUV, Grayscale, ...)
+  * write picture into DRAM
+
+Visconti5 SoC has two VIIF hardware instances.
+
+software architecture
+---------------------
+
+The Visconti VIIF driver is composed of following components:
+
+* (image sensor driver)
+* MIPI CSI2 receiver subdevice driver
+
+  * corresponding to CSI2RX
+
+* Visconti ISP subdevice driver
+
+  * corresponding to L1ISP, L2ISP (Lens distortion correction, Scaling)
+
+* Visconti Capture V4L2 device driver
+
+  * corresponding to L2ISP (Cropping) and Video DMAC
+  * multiple output videobuf queues
+
+    * main path0 (RGB, YUV, Grayscale, ...)
+    * main path1 (RGB, YUV, Grayscale, ...)
+    * sub path (RAW picture)
+
+::
+
+  +-----------+      +-----------+     +----------------+       +-------------------------+
+  | Sensor    |      | CSI2RX    |     | ISP            |       | Capture MAIN PATH0      |
+  | subdevice | ---- | subdevice | --- | subdevice      | --+-- | V4L2 device             |
+  | (IMX219)  |      | (CSI2RX)  |     | (L1ISP, L2ISP) |   |   | (L2ISP crop, VideoDMAC) |
+  +-----------+      +-----------+     +----------------+   |   +-------------------------+
+                                                            |
+                                                            |   +-------------------------+
+                                                            |   | Capture MAIN PATH1      |
+                                                            +-- | V4L2 device             |
+                                                            |   | (L2ISP crop, VideoDMAC) |
+                                                            |   +-------------------------+
+                                                            |
+                                                            |   +-------------------------+
+                                                            |   | Capture SUB PATH        |
+                                                            +-- | V4L2 device             |
+                                                                | (VideoDMAC)             |
+                                                                +-------------------------+
+
+
+The VIIF driver provides following device nodes for Visconti5 SoC:
+
+* VIIF0
+
+  * /dev/media0
+  * /dev/video0 (main path0)
+  * /dev/video1 (main path1)
+  * /dev/video2 (sub path)
+
+* VIIF1
+
+  * /dev/media1
+  * /dev/video3 (main path0)
+  * /dev/video4 (main path1)
+  * /dev/video5 (sub path)
+
+Use of coherent memory
+----------------------
+
+Visconti5 SoC has two independent DDR SDRAM controllers.
+Each controller is mapped to 36bit address space.
+
+Accelerator bus masters have two paths to access memory;
+one is directly connected to SDRAM controller,
+the another is connected via a cache coherency bus
+which keeps coherency among CPUs.
+
+From acclerators and CPUs, the address map is following:
+
+* 0x0_8000_0000 DDR0 direct access
+* 0x4_8000_0000 DDR0 coherency bus
+* 0x8_8000_0000 DDR1 direct access
+* 0xC_8000_0000 DDR1 coherency bus
+
+The base address can be specified with "memory" and "reserved-memory" elements
+in a device tree description.
+It's not recommended to mix direct address and coherent address.
+
+The Visconti5 VIIF driver always use only direct address to configure Video DMACs of the hardware.
+This design is to avoid great performance loss at coherency bus caused by massive memory access.
+You should not put the dma_coherent attribute to viif element in device tree.
+Cache operations are done automatically by videobuf2 driver.
+
+Tested environment
+------------------
+
+The Visconti VIIF driver was tested with following items:
+
+* IMX219 image sensor
+* IMX335 image sensor
+
+IOCTLs
+======
+
+Following public IOCTLs are supported
+
+* VIDIOC_QUERYCAP
+* VIDIOC_ENUM_FMT
+* VIDIOC_TRY_FMT
+* VIDIOC_S_FMT
+* VIDIOC_G_FMT
+* VIDIOC_ENUM_FRAMESIZES
+* VIDIOC_G_EXT_CTRLS
+* VIDIOC_S_EXT_CTRLS
+* VIDIOC_REQBUFS
+* VIDIOC_QUERYBUF
+* VIDIOC_QBUF
+* VIDIOC_EXPBUF
+* VIDIOC_DQBUF
+* VIDIOC_CREATE_BUFS
+* VIDIOC_PREPARE_BUF
+* VIDIOC_STREAMON
+* VIDIOC_STREAMOFF
+
+Vendor specific v4l2 controls
+(except for V4L2_CID_VISCONTI_VIIF_MAIN_SET_RAWPACK_MODE and
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_INPUT_MODE) should be called
+after ioctl(S_FMT) because setting the frame format may affect
+valid range of parameters of the controls.
+
+Vendor specific v4l2 controls
+=============================
+
+.. _V4L2_CID_VISCONTI_VIIF_MAIN_SET_RAWPACK_MODE:
+
+V4L2_CID_VISCONTI_VIIF_MAIN_SET_RAWPACK_MODE
+--------------------------------------------
+
+This control sets the format to pack multiple RAW pixel values into a word.
+
+This control accepts a __u32 value defined as `enum viif_rawpack_mode`.
+
+This control should be set before ioctl(S_FMT) and should not be changed after that.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_INPUT_MODE:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_INPUT_MODE
+--------------------------------------------
+
+This control sets L1ISP preprocessing mode for RAW input images.
+
+This control accepts a `struct viif_l1_input_mode_config` instance.
+
+This control should be set before ioctl(S_FMT) and should not be changed after that.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_RGB_TO_Y_COEF:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_RGB_TO_Y_COEF
+-----------------------------------------------
+
+This control sets parameters to yield Y value from RGB pixel values.
+
+This control accepts a `struct viif_l1_rgb_to_y_coef_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG_MODE:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG_MODE
+-----------------------------------------
+
+This control sets rules of generating analog gains for each feature in L1ISP.
+Related features are:
+
+* Optical Black Clamp Correction (OBCC)
+* Defect Pixel Correction (DPC)
+* RAW Color Noise Reduction (RCNR)
+* Lens Shading Correction (LSC)
+* Color matrix correction (MPRO)
+* Image quality adjustment (VPRO)
+
+The base gain is set with V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG control.
+
+This control accepts a `struct viif_l1_ag_mode_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG
+------------------------------------
+
+This control sets base analog gain commonly used in L1ISP features.
+Analog gain for each L1ISP feature is generated
+from the base analog gain and a configuration via V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AG_MODE control.
+
+This control accepts a `struct viif_l1_ag_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRE:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRE
+--------------------------------------
+
+This controls sets parameters for HDR Expansion feature.
+
+This control accepts a `struct viif_l1_hdre_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_IMG_EXTRACTION:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_IMG_EXTRACTION
+------------------------------------------------
+
+This control sets black level parameters for L1ISP inputs.
+
+This control accepts a `struct viif_l1_img_extraction_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_DPC:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_DPC
+-------------------------------------
+
+This control sets parameters for Defect Pixel Correction.
+
+This control accepts a `struct viif_l1_dpc_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_PRESET_WHITE_BALANCE:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_PRESET_WHITE_BALANCE
+------------------------------------------------------
+
+This control sets parameters for white balance.
+
+This control accepts a `struct viif_l1_preset_white_balance_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_RAW_COLOR_NOISE_REDUCTION:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_RAW_COLOR_NOISE_REDUCTION
+-----------------------------------------------------------
+
+This control sets parameters for RAW color noise reduction (RCNR) feature.
+
+This control accepts a `struct viif_l1_raw_color_noise_reduction_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRS:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRS
+--------------------------------------
+
+This control sets parameters for HDR synthesis.
+
+This control accepts a `struct viif_l1_hdrs_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_BLACK_LEVEL_CORRECTION:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_BLACK_LEVEL_CORRECTION
+--------------------------------------------------------
+
+This control sets parameters for black level correction feature.
+
+This control accepts a `struct viif_l1_black_level_correction_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_LSC:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_LSC
+-------------------------------------
+
+This control sets parameters for Lens Shading Correction feature.
+L1ISP supports 2 correction methods:
+
+* parabola shading
+* grid shading
+
+This control accepts a `struct viif_l1_lsc_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_MAIN_PROCESS:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_MAIN_PROCESS
+----------------------------------------------
+
+This controls sets parameter for the MAIN PROCESS feature which is composed of:
+
+* demosaic
+* color matrix correction
+
+This control accepts a `struct viif_l1_main_process_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AWB:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AWB
+-------------------------------------
+
+This control sets parameter for auto white balance feature.
+
+This control accepts a `struct viif_l1_awb_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_LOCK_AWB_GAIN:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_LOCK_AWB_GAIN
+-------------------------------------------
+
+This control requests enable/disable of lock for AWB gain.
+
+This control accepts a u32 value; 0 for disable lock, 1 for enable lock.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRC:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRC
+--------------------------------------
+
+This control sets parameter for HDR Compression feature.
+
+This control accepts a `struct viif_l1_hdrc_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRC_LTM:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_HDRC_LTM
+------------------------------------------
+
+This control sets parameter for HDR Compression Local Tone Mapping feature.
+
+This control accepts a `struct viif_l1_hdrc_ltm_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_GAMMA:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_GAMMA
+---------------------------------------
+
+This control sets parameter for gamma correction at L1ISP.
+
+This control accepts a `struct viif_l1_gamma_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_IMG_QUALITY_ADJUSTMENT:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_IMG_QUALITY_ADJUSTMENT
+--------------------------------------------------------
+
+This control sets parameter for VPRO feature which is composed of:
+
+* luminance adjustment:
+
+ * brightness adjustment
+ * linear contrast adjusment
+ * nonlinear contrast adjustment
+ * luminance noise reduction
+ * edge enhancement
+
+* chroma adjustment:
+
+ * chroma suppression
+ * color level adjustment
+ * chroma noise reduction
+ * coring suppression
+ * edge chroma suppression
+ * color noise reduction
+
+This control accepts a `struct viif_l1_img_quality_adjustment_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AVG_LUM_GENERATION:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L1_SET_AVG_LUM_GENERATION
+----------------------------------------------------
+
+This control sets parameter for average luminance statistics feature.
+
+This control accepts a `struct viif_l1_avg_lum_generation_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_UNDIST:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_UNDIST
+----------------------------------------
+
+This control sets parameter for the lens undistortion feature of L2ISP.
+Lens undistortion parameters are defined as either or combination of polinomial parameter and grid table.
+
+This control accepts a `struct viif_l2_undist_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_ROI:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_ROI
+-------------------------------------
+
+This control sets dimensions of intermediate images and scaling parameter of L2ISP.
+If you want to crop the output image,
+you should set crop parameter to the corresponding source pad of the ISP subdevice with media-ctl tool.
+
+This control accepts a `struct viif_l2_roi_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_GAMMA:
+
+V4L2_CID_VISCONTI_VIIF_ISP_L2_SET_GAMMA
+---------------------------------------
+
+This control sets gamma parameter for L2ISP.
+
+This control accepts a `struct viif_l2_gamma_config` instance.
+
+.. _V4L2_CID_VISCONTI_VIIF_CSI2RX_GET_CALIBRATION_STATUS:
+
+V4L2_CID_VISCONTI_VIIF_CSI2RX_GET_CALIBRATION_STATUS
+----------------------------------------------------
+
+This control provides CSI2 receiver calibration status.
+
+This control fills a `struct viif_csi2rx_cal_status` instance with current status.
+
+.. _V4L2_CID_VISCONTI_VIIF_CSI2RX_GET_ERR_STATUS:
+
+V4L2_CID_VISCONTI_VIIF_CSI2RX_GET_ERR_STATUS
+--------------------------------------------
+
+This control provides CSI2 receiver error description.
+
+This control fills a `struct viif_csi2rx_err_status` instance with accumerated error status.
+Note that internal accumerated status is cleared after reading.
+
+.. _V4L2_CID_VISCONTI_VIIF_GET_LAST_CAPTURE_STATUS:
+
+V4L2_CID_VISCONTI_VIIF_GET_LAST_CAPTURE_STATUS
+----------------------------------------------
+
+This control provides status information for the last captured frame.
+
+This control fills a `struct viif_l1_info` instance with current status.
+
+.. _V4L2_CID_VISCONTI_VIIF_GET_REPORTED_ERRORS:
+
+V4L2_CID_VISCONTI_VIIF_GET_REPORTED_ERRORS
+------------------------------------------
+
+This control provides error information since the last read of this control.
+
+This control fills a `struct viif_reported_errors` instance with accumerated error status.
+Note that internal accumerated status is cleared after reading.
+
+Structures
+==========
+
+.. kernel-doc:: include/uapi/linux/visconti_viif.h
+
diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
index f9f73530a6be..2f0e4f955167 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
@@ -295,6 +295,10 @@ still cause this situation.
       - ``p_av1_film_grain``
       - A pointer to a struct :c:type:`v4l2_ctrl_av1_film_grain`. Valid if this control is
         of type ``V4L2_CTRL_TYPE_AV1_FILM_GRAIN``.
+    * - void *
+      - ``ptr``
+      - A pointer to Visconti ISP control specific structure. Valid if this control is
+        of type ``V4L2_CTRL_TYPE_VISCONTI_ISP``
     * - void *
       - ``ptr``
       - A pointer to a compound type which can be an N-dimensional array
diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
index 4d38acafe8e1..cd57fac8bbf9 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
@@ -549,6 +549,11 @@ See also the examples in :ref:`control`.
       - n/a
       - A struct :c:type:`v4l2_ctrl_av1_film_grain`, containing AV1 Film Grain
         parameters for stateless video decoders.
+    * - ``V4L2_CTRL_TYPE_VISCONTI_ISP``
+      - n/a
+      - n/a
+      - n/a
+      - Structs specific for Visconti ISP configuration controls.
 
 .. raw:: latex
 
-- 
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[PATCH v8 5/5] MAINTAINERS: Add entries for Toshiba Visconti Video Input Interface

[Yuji Ishikawa]

Added entries for visconti Video Input Interface driver, including;
* device tree bindings
* source files
* documentation files

Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
---
Changelog v2:
- no change

Changelog v3:
- added entry for driver API documentation

Changelog v4:
- added entry for header file

Changelog v5:
- no change

Changelog v6:
- update path to VIIF driver source files

Changelog v7:
- no change

Changelog v8:
- rename bindings description file

 MAINTAINERS | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 90f13281d297..2cd290dfadd3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2891,17 +2891,21 @@ F:	Documentation/devicetree/bindings/arm/toshiba.yaml
 F:	Documentation/devicetree/bindings/clock/toshiba,tmpv770x-pipllct.yaml
 F:	Documentation/devicetree/bindings/clock/toshiba,tmpv770x-pismu.yaml
 F:	Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml
+F:	Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml
 F:	Documentation/devicetree/bindings/net/toshiba,visconti-dwmac.yaml
 F:	Documentation/devicetree/bindings/pci/toshiba,visconti-pcie.yaml
 F:	Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml
 F:	Documentation/devicetree/bindings/watchdog/toshiba,visconti-wdt.yaml
+F:	Documentation/driver-api/media/drivers/visconti-viif.rst
 F:	arch/arm64/boot/dts/toshiba/
 F:	drivers/clk/visconti/
 F:	drivers/gpio/gpio-visconti.c
+F:	drivers/media/platform/toshiba/visconti/
 F:	drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
 F:	drivers/pci/controller/dwc/pcie-visconti.c
 F:	drivers/pinctrl/visconti/
 F:	drivers/watchdog/visconti_wdt.c
+F:	include/uapi/linux/visconti_viif.h
 N:	visconti
 
 ARM/UNIPHIER ARCHITECTURE
-- 
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Re: [PATCH v8 0/5] Add Toshiba Visconti Video Input Interface driver

[Hans Verkuil]

Hi Yuji Ishikawa,

On 26/09/2023 01:28, Yuji Ishikawa wrote:
> This series is the Video Input Interface driver
> for Toshiba's ARM SoC, Visconti.
> This provides DT binding documentation,
> device driver, documentation and MAINTAINER files.
> 
> A visconti VIIF driver instance exposes
> 1 media control device file and 3 video device files
> for a VIIF hardware.
> Detailed HW/SW are described in documentation directory.
> The VIIF hardware has CSI2 receiver,
> image signal processor and DMAC inside.
> The subdevice for image signal processor provides
> vendor specific V4L2 controls.
> 
> The device driver depends on two other drivers under development;
> clock framework driver and IOMMU driver.
> Corresponding features will be added later.

Building this series results in a set of sparse warnings:

drivers/media/platform/toshiba/visconti/viif_capture.c:235:29: warning: symbol 'out_format_spec' was not declared. Should it be static?
drivers/media/platform/toshiba/visconti/viif_capture.c:517:13: warning: context imbalance in 'viif_regbuf_access_start' - wrong count at exit
drivers/media/platform/toshiba/visconti/viif_capture.c:523:13: warning: context imbalance in 'viif_regbuf_access_end' - unexpected unlock
drivers/media/platform/toshiba/visconti/viif_csi2rx.c:458:15: warning: Using plain integer as NULL pointer
drivers/media/platform/toshiba/visconti/viif_csi2rx.c:458:15: warning: Using plain integer as NULL pointer

And I also get a Documentation build warning:

Documentation/output/videodev2.h.rst:6: WARNING: undefined label: 'v4l2-ctrl-type-visconti-isp'

Also note that you need to rebase: the v4l2-controls.h header changed.

Regards,

	Hans

> 
> Best regards,
> Yuji
> 
> Changelog v2:
> - Resend v1 because a patch exceeds size limit.
> 
> Changelog v3:
> - Add documentation to describe SW and HW
> - Adapted to media control framework
> - Introduced ISP subdevice, capture device
> - Remove private IOCTLs and add vendor specific V4L2 controls
> - Change function name avoiding camelcase and uppercase letters
> 
> Changelog v4:
> - Split patches because a patch exceeds size limit
> - fix dt-bindings document
> - stop specifying ID numbers for driver instance explicitly at device tree
> - use pm_runtime to trigger initialization of HW
>   along with open/close of device files.
> - add a entry for a header file at MAINTAINERS file
> 
> Changelog v5:
> - Fix coding style problem in viif.c (patch 2/6)
> 
> Changelog v6:
> - add register definition of BUS-IF and MPU in dt-bindings
> - add CSI2RX subdevice (separeted from ISP subdevice)
> - change directory layout (moved to media/platform/toshiba/visconti)
> - change source file layout (removed hwd_xxxx.c)
> - pointer to userland memory is removed from uAPI parameters
> - change register access (from struct style to macro style)
> - remove unused macros
> 
> Changelog v7:
> - remove redundant "bindings" from header and description text
> - fix multiline text of "description"
> - change "compatible" to "visconti5-viif"
> - explicitly define allowed properties for port::endpoint
> - remove unused variables
> - update kerneldoc comments
> - update references to headers
> 
> Changelog v8:
> - rename bindings description file
> - remove/simplify items in bindings
> - update operations around v4l2_async_notifier
> - use v4l2_async_connection instead of v4l2_async_subdev
> - use dev_err_probe()
> - better error handling at probe
> - remove redundant mutex
> - add V4L2_CTRL_TYPE_VISCONTI_ISP constant
> 
> Yuji Ishikawa (5):
>   dt-bindings: media: platform: visconti: Add Toshiba Visconti Video
>     Input Interface
>   media: platform: visconti: Add Toshiba Visconti Video Input Interface
>     driver
>   media: add V4L2 vendor specific control handlers
>   documentation: media: add documentation for Toshiba Visconti Video
>     Input Interface driver
>   MAINTAINERS: Add entries for Toshiba Visconti Video Input Interface
> 
>  .../media/toshiba,visconti5-viif.yaml         |  105 +
>  .../driver-api/media/drivers/index.rst        |    1 +
>  .../media/drivers/visconti-viif.rst           |  462 +++
>  .../media/v4l/vidioc-g-ext-ctrls.rst          |    4 +
>  .../media/v4l/vidioc-queryctrl.rst            |    5 +
>  MAINTAINERS                                   |    4 +
>  drivers/media/platform/Kconfig                |    1 +
>  drivers/media/platform/Makefile               |    1 +
>  drivers/media/platform/toshiba/Kconfig        |    6 +
>  drivers/media/platform/toshiba/Makefile       |    2 +
>  .../media/platform/toshiba/visconti/Kconfig   |   18 +
>  .../media/platform/toshiba/visconti/Makefile  |    8 +
>  .../media/platform/toshiba/visconti/viif.c    |  650 ++++
>  .../media/platform/toshiba/visconti/viif.h    |  374 ++
>  .../platform/toshiba/visconti/viif_capture.c  | 1489 ++++++++
>  .../platform/toshiba/visconti/viif_capture.h  |   22 +
>  .../platform/toshiba/visconti/viif_common.c   |  199 +
>  .../platform/toshiba/visconti/viif_common.h   |   38 +
>  .../platform/toshiba/visconti/viif_controls.c | 3394 +++++++++++++++++
>  .../platform/toshiba/visconti/viif_controls.h |   18 +
>  .../platform/toshiba/visconti/viif_csi2rx.c   |  691 ++++
>  .../platform/toshiba/visconti/viif_csi2rx.h   |   24 +
>  .../toshiba/visconti/viif_csi2rx_regs.h       |  102 +
>  .../platform/toshiba/visconti/viif_isp.c      | 1259 ++++++
>  .../platform/toshiba/visconti/viif_isp.h      |   24 +
>  .../platform/toshiba/visconti/viif_regs.h     |  716 ++++
>  drivers/media/v4l2-core/v4l2-ctrls-core.c     |    7 +-
>  include/uapi/linux/v4l2-controls.h            |    6 +
>  include/uapi/linux/videodev2.h                |    2 +
>  include/uapi/linux/visconti_viif.h            | 1800 +++++++++
>  30 files changed, 11431 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti5-viif.yaml
>  create mode 100644 Documentation/driver-api/media/drivers/visconti-viif.rst
>  create mode 100644 drivers/media/platform/toshiba/Kconfig
>  create mode 100644 drivers/media/platform/toshiba/Makefile
>  create mode 100644 drivers/media/platform/toshiba/visconti/Kconfig
>  create mode 100644 drivers/media/platform/toshiba/visconti/Makefile
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_capture.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_capture.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_common.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_common.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_controls.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_controls.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_csi2rx_regs.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.c
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_isp.h
>  create mode 100644 drivers/media/platform/toshiba/visconti/viif_regs.h
>  create mode 100644 include/uapi/linux/visconti_viif.h
> 


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Re: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface

[Krzysztof Kozlowski]

On 26/09/2023 01:28, Yuji Ishikawa wrote:
> Adds the Device Tree binding documentation that allows to describe
> the Video Input Interface found in Toshiba Visconti SoCs.
> 


> +  reg:
> +    items:
> +      - description: Registers for capture control
> +      - description: Registers for CSI2 receiver control
> +      - description: Registers for bus interface unit control
> +      - description: Registers for Memory Protection Unit
> +
> +  interrupts:
> +    items:
> +      - description: Sync Interrupt
> +      - description: Status (Error) Interrupt
> +      - description: CSI2 Receiver Interrupt
> +      - description: L1ISP Interrupt
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/$defs/port-base
> +    unevaluatedProperties: false
> +    description: CSI-2 input port, with a single endpoint connected to the CSI-2 transmitter.
> +
> +    properties:
> +      endpoint:
> +        $ref: video-interfaces.yaml#
> +        additionalProperties: false

This is a friendly reminder during the review process.

It seems my previous comments were not fully addressed. Maybe my
feedback got lost between the quotes, maybe you just forgot to apply it.
Please go back to the previous discussion and either implement all
requested changes or keep discussing them.

Thank you.


> +
> +        required:
> +          - clock-noncontinuous
> +          - link-frequencies
> +          - remote-endpoint
> +          - data-lanes

Not much improved here. required goes after properties, always. I
pointed you last time the file which you should use as an example.

> +
> +        properties:
> +          data-lanes:
> +            description: VIIF supports 1, 2, 3 or 4 data lanes
> +            minItems: 1
> +            items:
> +              - const: 1
> +              - const: 2
> +              - const: 3
> +              - const: 4
> +
> +          clock-noncontinuous: true

Drop

> +          link-frequencies: true

Drop
> +          remote-endpoint: true

Drop

Best regards,
Krzysztof


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RE: [PATCH v8 0/5] Add Toshiba Visconti Video Input Interface driver

[yuji2.ishikawa]

Hello Hans,

> -----Original Message-----
> From: Hans Verkuil <hverkuil@xs4all.nl>
> Sent: Wednesday, September 27, 2023 10:24 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@toshiba.co.jp>; Laurent Pinchart
> <laurent.pinchart@ideasonboard.com>; Mauro Carvalho Chehab
> <mchehab@kernel.org>; Rob Herring <robh+dt@kernel.org>; Krzysztof
> Kozlowski <krzysztof.kozlowski+dt@linaro.org>; Conor Dooley
> <conor+dt@kernel.org>; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□ＤＩＴ○
> ＯＳＴ) <nobuhiro1.iwamatsu@toshiba.co.jp>
> Cc: linux-media@vger.kernel.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v8 0/5] Add Toshiba Visconti Video Input Interface driver
> 
> Hi Yuji Ishikawa,
> 
> On 26/09/2023 01:28, Yuji Ishikawa wrote:
> > This series is the Video Input Interface driver for Toshiba's ARM SoC,
> > Visconti.
> > This provides DT binding documentation, device driver, documentation
> > and MAINTAINER files.
> >
> > A visconti VIIF driver instance exposes
> > 1 media control device file and 3 video device files for a VIIF
> > hardware.
> > Detailed HW/SW are described in documentation directory.
> > The VIIF hardware has CSI2 receiver,
> > image signal processor and DMAC inside.
> > The subdevice for image signal processor provides vendor specific V4L2
> > controls.
> >
> > The device driver depends on two other drivers under development;
> > clock framework driver and IOMMU driver.
> > Corresponding features will be added later.
> 
> Building this series results in a set of sparse warnings:

I set up the latest sparse tool and reproduced the warnings.

> drivers/media/platform/toshiba/visconti/viif_capture.c:235:29: warning: symbol
> 'out_format_spec' was not declared. Should it be static?

I'll set static qualifier.

> drivers/media/platform/toshiba/visconti/viif_capture.c:517:13: warning:
> context imbalance in 'viif_regbuf_access_start' - wrong count at exit
> drivers/media/platform/toshiba/visconti/viif_capture.c:523:13: warning:
> context imbalance in 'viif_regbuf_access_end' - unexpected unlock

I'll expand these inline functions.
The same sequences are already expanded in viif_controls.c

> drivers/media/platform/toshiba/visconti/viif_csi2rx.c:458:15: warning: Using
> plain integer as NULL pointer
> drivers/media/platform/toshiba/visconti/viif_csi2rx.c:458:15: warning: Using
> plain integer as NULL pointer

I'll fix them.

> And I also get a Documentation build warning:
> 
> Documentation/output/videodev2.h.rst:6: WARNING: undefined label:
> 'v4l2-ctrl-type-visconti-isp'

It seems the label is generated with a script (kerneldoc->ReST).
I also found that the other members of enum v4l2_ctrl_type have labels pointing at legal targets.
I'll try further to get a legal label.

> Also note that you need to rebase: the v4l2-controls.h header changed.

It seems that media-staging tree was updated after I fixed my patchset.
I should have re-check before submission.
I'll rebase to the latest HEAD and format v9 patch.

> Regards,
> 
> 	Hans
> 

Regards,
Yuji
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RE: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface

[yuji2.ishikawa]

Hello Krzysztof,

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Sent: Thursday, September 28, 2023 2:32 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@toshiba.co.jp>; Hans Verkuil <hverkuil@xs4all.nl>; Laurent
> Pinchart <laurent.pinchart@ideasonboard.com>; Mauro Carvalho Chehab
> <mchehab@kernel.org>; Rob Herring <robh+dt@kernel.org>; Krzysztof
> Kozlowski <krzysztof.kozlowski+dt@linaro.org>; Conor Dooley
> <conor+dt@kernel.org>; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□ＤＩＴ○
> ＯＳＴ) <nobuhiro1.iwamatsu@toshiba.co.jp>
> Cc: linux-media@vger.kernel.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba
> Visconti Video Input Interface
> 
> On 26/09/2023 01:28, Yuji Ishikawa wrote:
> > Adds the Device Tree binding documentation that allows to describe the
> > Video Input Interface found in Toshiba Visconti SoCs.
> >
> 
> 
> > +  reg:
> > +    items:
> > +      - description: Registers for capture control
> > +      - description: Registers for CSI2 receiver control
> > +      - description: Registers for bus interface unit control
> > +      - description: Registers for Memory Protection Unit
> > +
> > +  interrupts:
> > +    items:
> > +      - description: Sync Interrupt
> > +      - description: Status (Error) Interrupt
> > +      - description: CSI2 Receiver Interrupt
> > +      - description: L1ISP Interrupt
> > +
> > +  port:
> > +    $ref: /schemas/graph.yaml#/$defs/port-base
> > +    unevaluatedProperties: false
> > +    description: CSI-2 input port, with a single endpoint connected to the
> CSI-2 transmitter.
> > +
> > +    properties:
> > +      endpoint:
> > +        $ref: video-interfaces.yaml#
> > +        additionalProperties: false
> 
> This is a friendly reminder during the review process.
> 
> It seems my previous comments were not fully addressed. Maybe my feedback
> got lost between the quotes, maybe you just forgot to apply it.
> Please go back to the previous discussion and either implement all requested
> changes or keep discussing them.
> 
> Thank you.

I'm very sorry that I misunderstood the intent of the last conversion.
https://lore.kernel.org/all/0aa471ce-da83-172d-d870-1ec7a562baf7@linaro.org/
I thought "additionalProperties: false" can be used and "xxx:true" should stay.

Let me confirm your intentions:
  - "unevaluatedProperties: false" should be used instead of "additionalProperties: false"
  - All of "xxx: true" should be removed
Are these two correct understandings?

> 
> > +
> > +        required:
> > +          - clock-noncontinuous
> > +          - link-frequencies
> > +          - remote-endpoint
> > +          - data-lanes
> 
> Not much improved here. required goes after properties, always. I pointed you
> last time the file which you should use as an example.

I'll check the overall structure of renesas,rzg2l-csi2.yaml.

> > +
> > +        properties:
> > +          data-lanes:
> > +            description: VIIF supports 1, 2, 3 or 4 data lanes
> > +            minItems: 1
> > +            items:
> > +              - const: 1
> > +              - const: 2
> > +              - const: 3
> > +              - const: 4
> > +
> > +          clock-noncontinuous: true
> 
> Drop
> 
> > +          link-frequencies: true
> 
> Drop
> > +          remote-endpoint: true
> 
> Drop
> 
> Best regards,
> Krzysztof

Best regards,
Yuji
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Re: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface

[Krzysztof Kozlowski]

On 04/10/2023 01:10, yuji2.ishikawa@toshiba.co.jp wrote:
>>> +    properties:
>>> +      endpoint:
>>> +        $ref: video-interfaces.yaml#
>>> +        additionalProperties: false
>>
>> This is a friendly reminder during the review process.
>>
>> It seems my previous comments were not fully addressed. Maybe my feedback
>> got lost between the quotes, maybe you just forgot to apply it.
>> Please go back to the previous discussion and either implement all requested
>> changes or keep discussing them.
>>
>> Thank you.
> 
> I'm very sorry that I misunderstood the intent of the last conversion.
> https://lore.kernel.org/all/0aa471ce-da83-172d-d870-1ec7a562baf7@linaro.org/
> I thought "additionalProperties: false" can be used and "xxx:true" should stay.
> 
> Let me confirm your intentions:
>   - "unevaluatedProperties: false" should be used instead of "additionalProperties: false"
>   - All of "xxx: true" should be removed
> Are these two correct understandings?

Ah, true, I missed that. It is indeed fine, apologies.

> 
>>
>>> +
>>> +        required:
>>> +          - clock-noncontinuous
>>> +          - link-frequencies
>>> +          - remote-endpoint
>>> +          - data-lanes
>>
>> Not much improved here. required goes after properties, always. I pointed you
>> last time the file which you should use as an example.
> 
> I'll check the overall structure of renesas,rzg2l-csi2.yaml.

This needs to be fixed.

> 
>>> +
>>> +        properties:
>>> +          data-lanes:
>>> +            description: VIIF supports 1, 2, 3 or 4 data lanes
>>> +            minItems: 1
>>> +            items:
>>> +              - const: 1
>>> +              - const: 2
>>> +              - const: 3
>>> +              - const: 4
>>> +
>>> +          clock-noncontinuous: true
>>
>> Drop

This and further can be ignored.

Best regards,
Krzysztof


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RE: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface

[yuji2.ishikawa]

Hello Krzysztof,

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Sent: Wednesday, October 4, 2023 3:51 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@toshiba.co.jp>; hverkuil@xs4all.nl;
> laurent.pinchart@ideasonboard.com; mchehab@kernel.org;
> robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org; conor+dt@kernel.org;
> iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□ＤＩＴ○ＯＳＴ)
> <nobuhiro1.iwamatsu@toshiba.co.jp>
> Cc: linux-media@vger.kernel.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v8 1/5] dt-bindings: media: platform: visconti: Add Toshiba
> Visconti Video Input Interface
> 
> On 04/10/2023 01:10, yuji2.ishikawa@toshiba.co.jp wrote:
> >>> +    properties:
> >>> +      endpoint:
> >>> +        $ref: video-interfaces.yaml#
> >>> +        additionalProperties: false
> >>
> >> This is a friendly reminder during the review process.
> >>
> >> It seems my previous comments were not fully addressed. Maybe my
> >> feedback got lost between the quotes, maybe you just forgot to apply it.
> >> Please go back to the previous discussion and either implement all
> >> requested changes or keep discussing them.
> >>
> >> Thank you.
> >
> > I'm very sorry that I misunderstood the intent of the last conversion.
> > https://lore.kernel.org/all/0aa471ce-da83-172d-d870-1ec7a562baf7@linar
> > o.org/ I thought "additionalProperties: false" can be used and
> > "xxx:true" should stay.
> >
> > Let me confirm your intentions:
> >   - "unevaluatedProperties: false" should be used instead of
> "additionalProperties: false"
> >   - All of "xxx: true" should be removed Are these two correct
> > understandings?
> 
> Ah, true, I missed that. It is indeed fine, apologies.
> 

I understand. I'll use "additionalProperties: false".

> >
> >>> +
> >>> +        properties:
> >>> +          data-lanes:
> >>> +            description: VIIF supports 1, 2, 3 or 4 data lanes
> >>> +            minItems: 1
> >>> +            items:
> >>> +              - const: 1
> >>> +              - const: 2
> >>> +              - const: 3
> >>> +              - const: 4
> >>> +
> >>> +          clock-noncontinuous: true
> >>
> >> Drop
> 
> This and further can be ignored.

I'll keep "xxx: true".

> Best regards,
> Krzysztof

Best regards,
Yuji
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