Re: [PATCH v4 0/5] media: staging: Add bcm2835-unicam driver

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Hi Hans, Sakari,

On Tue, Nov 10, 2020 at 06:40:31PM +0100, Jacopo Mondi wrote:
> Hello,
>   new iteration following
> v3: https://patchwork.linuxtv.org/project/linux-media/list/?series=3768
>
> Major changelog:
> - Use v4l2_dev.release and drop manual ref-counting as suggested by Dafna
> - Address Hans' comments on queue setup and metadata format handling function
> - s/MEDIA_BUS_FMT_SENSOR_DATA/MEDIA_BUS_FMT_CUSTOM_SENSOR_DATA as suggested by
>   Hans and rebase on Dafna's fixed metadata format patch
> - Add a TODO file to explain why the driver is in staging.
> - Conditionally register the unicam-embedded video device node on the presence
>   of the sensor's metadata source pad.
>
>   The media graph, when connected to a sensor that does not report metadata
>   looks like:
>
> 	Media controller API version 5.10.0
>
> 	Media device information
> 	------------------------
> 	driver          unicam
> 	model           unicam
> 	serial
> 	bus info        platform:fe801000.csi
> 	hw revision     0x0
> 	driver version  5.10.0
>
> 	Device topology
> 	- entity 1: ov5647 10-0036 (1 pad, 1 link)
> 		    type V4L2 subdev subtype Sensor flags 0
> 		    device node name /dev/v4l-subdev0
> 		pad0: Source
> 			[fmt:SBGGR10_1X10/640x480 field:none colorspace:srgb
> 			 crop.bounds:(16,16)/2592x1944
> 			 crop:(32,16)/2560x1920]
> 			-> "unicam-image":0 [ENABLED,IMMUTABLE]
>
> 	- entity 3: unicam-image (1 pad, 1 link)
> 		    type Node subtype V4L flags 1
> 		    device node name /dev/video0
> 		pad0: Sink
> 			<- "ov5647 10-0036":0 [ENABLED,IMMUTABLE]
>
>
>   If the sensor reports an additional metadata pad:
>
> 	Media controller API version 5.10.0
>
> 	Media device information
> 	------------------------
> 	driver          unicam
> 	model           unicam
> 	serial
> 	bus info        platform:fe801000.csi
> 	hw revision     0x0
> 	driver version  5.10.0
>
> 	Device topology
> 	- entity 1: imx219 10-0010 (2 pads, 2 links)
> 		    type V4L2 subdev subtype Sensor flags 0
> 		    device node name /dev/v4l-subdev0
> 		pad0: Source
> 			[fmt:SRGGB10_1X10/3280x2464 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:full-range
> 			 crop:(0,0)/3280x2464]
> 			-> "unicam-image":0 [ENABLED,IMMUTABLE]
> 		pad1: Source
> 			[fmt:unknown/16384x1 field:none
> 			 crop:(0,0)/3280x2464]
> 			-> "unicam-embedded":0 [ENABLED,IMMUTABLE]
>
> 	- entity 4: unicam-image (1 pad, 1 link)
> 		    type Node subtype V4L flags 1
> 		    device node name /dev/video0
> 		pad0: Sink
> 			<- "imx219 10-0010":0 [ENABLED,IMMUTABLE]
>
> 	- entity 10: unicam-embedded (1 pad, 1 link)
> 		     type Node subtype V4L flags 0
> 		     device node name /dev/video1
> 		pad0: Sink
> 			<- "imx219 10-0010":1 [ENABLED,IMMUTABLE]
>
>   Conditionally registering the metadata video node allows to simplify the
>   code in the driver as well, removing the 'sensor_embedded_data' flag.
>
>   An additional note: this version will break the libcamera pipeline handler
>   which assume the unicam-embedded video device node to always be there.
>
>   From Dave's reply to Dafna's comments I get instead that for the existing
>   applications ecosystem, having the metadata node not registered if the sensor
>   does not support it is not an issue.

I think I've closed comments received on v3.

Do you think this series is ready for being collected ?

Thanks
  j

>
> The v4l2-compliance output is reported below, with one test failing, again
> on the selection API, and again I'm not sure about the root cause. Seems like
> the compliance tool complains because a list of discrete formats is reported and
> the selection APIs are supported at the same time. Seems unlikely though.
>
> -------------------------------------------------------------------------------
> v4l2-compliance 1.21.0-4679, 32 bits, 32-bit time_t
> v4l2-compliance SHA: 225c6c2a17be 2020-10-30 15:13:07
>
> Compliance test for unicam device /dev/media0:
>
> Media Driver Info:
> 	Driver name      : unicam
> 	Model            : unicam
> 	Serial           :
> 	Bus info         : platform:fe801000.csi
> 	Media version    : 5.10.0
> 	Hardware revision: 0x00000000 (0)
> 	Driver version   : 5.10.0
>
> Required ioctls:
> 	test MEDIA_IOC_DEVICE_INFO: OK
>
> Allow for multiple opens:
> 	test second /dev/media0 open: OK
> 	test MEDIA_IOC_DEVICE_INFO: OK
> 	test for unlimited opens: OK
>
> Media Controller ioctls:
> 	test MEDIA_IOC_G_TOPOLOGY: OK
> 	Entities: 2 Interfaces: 2 Pads: 2 Links: 3
> 	test MEDIA_IOC_ENUM_ENTITIES/LINKS: OK
> 	test MEDIA_IOC_SETUP_LINK: OK
> 	test invalid ioctls: OK
>
> Total for unicam device /dev/media0: 8, Succeeded: 8, Failed: 0, Warnings: 0
> --------------------------------------------------------------------------------
> Compliance test for unicam device /dev/video0:
>
> Driver Info:
> 	Driver name      : unicam
> 	Card type        : unicam
> 	Bus info         : platform:fe801000.csi
> 	Driver version   : 5.10.0
> 	Capabilities     : 0x85a00001
> 		Video Capture
> 		Metadata Capture
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> 		Device Capabilities
> 	Device Caps      : 0x05200001
> 		Video Capture
> 		Read/Write
> 		Streaming
> 		Extended Pix Format
> Media Driver Info:
> 	Driver name      : unicam
> 	Model            : unicam
> 	Serial           :
> 	Bus info         : platform:fe801000.csi
> 	Media version    : 5.10.0
> 	Hardware revision: 0x00000000 (0)
> 	Driver version   : 5.10.0
> Interface Info:
> 	ID               : 0x03000005
> 	Type             : V4L Video
> Entity Info:
> 	ID               : 0x00000003 (3)
> 	Name             : unicam-image
> 	Function         : V4L2 I/O
> 	Flags         : default
> 	Pad 0x01000004   : 0: Sink
> 	  Link 0x02000007: from remote pad 0x1000002 of entity 'ov5647 10-0036': Data, Enabled, Immutable
>
> Required ioctls:
> 	test MC information (see 'Media Driver Info' above): OK
> 	test VIDIOC_QUERYCAP: OK
>
> Allow for multiple opens:
> 	test second /dev/video0 open: OK
> 	test VIDIOC_QUERYCAP: OK
> 	test VIDIOC_G/S_PRIORITY: OK
> 	test for unlimited opens: OK
>
> 	test invalid ioctls: OK
> Debug ioctls:
> 	test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> 	test VIDIOC_LOG_STATUS: OK
>
> Input ioctls:
> 	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> 	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> 	test VIDIOC_ENUMAUDIO: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMINPUT: OK
> 	test VIDIOC_G/S_AUDIO: OK (Not Supported)
> 	Inputs: 1 Audio Inputs: 0 Tuners: 0
>
> Output ioctls:
> 	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> 	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> 	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> 	Outputs: 0 Audio Outputs: 0 Modulators: 0
>
> Input/Output configuration ioctls:
> 	test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> 	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> 	test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> 	test VIDIOC_G/S_EDID: OK (Not Supported)
>
> Control ioctls (Input 0):
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 12 Private Controls: 0
>
> Format ioctls (Input 0):
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> 	test VIDIOC_G/S_PARM: OK (Not Supported)
> 	test VIDIOC_G_FBUF: OK (Not Supported)
> 	test VIDIOC_G_FMT: OK
> 	test VIDIOC_TRY_FMT: OK
> 	test VIDIOC_S_FMT: OK
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 		fail: v4l2-test-formats.cpp(1505): node->frmsizes_count[pixfmt] > 1
> 	test Cropping: FAIL
> 	test Composing: OK (Not Supported)
> 	test Scaling: OK (Not Supported)
>
> Codec ioctls (Input 0):
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>
> Buffer ioctls (Input 0):
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> 	test VIDIOC_EXPBUF: OK
> 	test Requests: OK (Not Supported)
>
> Test input 0:
>
> Streaming ioctls:
> 	test read/write: OK
> 	test blocking wait: OK
> 	test MMAP (no poll): OK
> 	test MMAP (select): OK
> 	test MMAP (epoll): OK
> 	test USERPTR (no poll): OK (Not Supported)
> 	test USERPTR (select): OK (Not Supported)
> 	test DMABUF: Cannot test, specify --expbuf-device
>
> Stream using all formats:
> 	test MMAP for Format pBAA, Frame Size 2592x1944:
> 		Crop 2592x1944@16x16, Stride 3264, Field None: OK
> 		Crop 2592x1944@16x16, Stride 3328, Field None: OK
> 	test MMAP for Format pBAA, Frame Size 1920x1080:
> 		Crop 1928x1080@364x450, Stride 2400, Field None: OK
> 		Crop 1928x1080@364x450, Stride 2464, Field None: OK
> 	test MMAP for Format pBAA, Frame Size 1296x972:
> 		Crop 2592x1944@16x16, Stride 1632, Field None: OK
> 		Crop 2592x1944@16x16, Stride 1696, Field None: OK
> 	test MMAP for Format pBAA, Frame Size 640x480:
> 		Crop 2560x1920@32x16, Stride 800, Field None: OK
> 		Crop 2560x1920@32x16, Stride 864, Field None: OK
> 	test MMAP for Format BG10, Frame Size 2592x1944:
> 		Crop 2592x1944@16x16, Stride 5184, Field None: OK
> 		Crop 2592x1944@16x16, Stride 5248, Field None: OK
> 	test MMAP for Format BG10, Frame Size 1920x1080:
> 		Crop 1928x1080@364x450, Stride 3840, Field None: OK
> 		Crop 1928x1080@364x450, Stride 3904, Field None: OK
> 	test MMAP for Format BG10, Frame Size 1296x972:
> 		Crop 2592x1944@16x16, Stride 2592, Field None: OK
> 		Crop 2592x1944@16x16, Stride 2656, Field None: OK
> 	test MMAP for Format BG10, Frame Size 640x480:
> 		Crop 2560x1920@32x16, Stride 1280, Field None: OK
> 		Crop 2560x1920@32x16, Stride 1344, Field None: OK
> Total for unicam device /dev/video0: 69, Succeeded: 68, Failed: 1, Warnings: 0
> --------------------------------------------------------------------------------
> Compliance test for device /dev/v4l-subdev0:
>
>
> Required ioctls:
>
> Allow for multiple opens:
> 	test second /dev/v4l-subdev0 open: OK
> 	test for unlimited opens: OK
>
> 	test invalid ioctls: OK
> Debug ioctls:
> 	test VIDIOC_LOG_STATUS: OK (Not Supported)
>
> Input ioctls:
> 	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> 	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> 	test VIDIOC_ENUMAUDIO: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
> 	test VIDIOC_G/S_AUDIO: OK (Not Supported)
> 	Inputs: 0 Audio Inputs: 0 Tuners: 0
>
> Output ioctls:
> 	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> 	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> 	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> 	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> 	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> 	Outputs: 0 Audio Outputs: 0 Modulators: 0
>
> Input/Output configuration ioctls:
> 	test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> 	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> 	test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> 	test VIDIOC_G/S_EDID: OK (Not Supported)
>
> Control ioctls:
> 	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> 	test VIDIOC_QUERYCTRL: OK
> 	test VIDIOC_G/S_CTRL: OK
> 	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> 	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> 	Standard Controls: 12 Private Controls: 0
>
> Format ioctls:
> 	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK (Not Supported)
> 	test VIDIOC_G/S_PARM: OK (Not Supported)
> 	test VIDIOC_G_FBUF: OK (Not Supported)
> 	test VIDIOC_G_FMT: OK (Not Supported)
> 	test VIDIOC_TRY_FMT: OK (Not Supported)
> 	test VIDIOC_S_FMT: OK (Not Supported)
> 	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> 	test Cropping: OK (Not Supported)
> 	test Composing: OK (Not Supported)
> 	test Scaling: OK (Not Supported)
>
> Codec ioctls:
> 	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> 	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> 	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>
> Buffer ioctls:
> 	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK (Not Supported)
> 	test VIDIOC_EXPBUF: OK (Not Supported)
> 	test Requests: OK (Not Supported)
>
> Total for device /dev/v4l-subdev0: 41, Succeeded: 41, Failed: 0, Warnings: 0
>
> Grand Total for unicam device /dev/media0: 118, Succeeded: 117, Failed: 1, Warnings: 0
> -------------------------------------------------------------------------------
>
> Tested by capturing frames from RPi Camera Module v1 (ov5647) and v2 (imx219)
> in 10-bit formats and 8-bit formats (imx219 only).
>
> Image are captured in a format I cannot inspect (raw2rgbpnm and 7yuv do not
> support the sensor's Bayern pattern), but I can spot shapes when converting to
> a format with a different pattern permutation, so I assume data is there.
>
> Thanks
>   j
>
> Dave Stevenson (1):
>   dt-bindings: media: Document BCM283x CSI2/CCP2 receiver
>
> Jacopo Mondi (1):
>   media: bcm2835-unicam: Add TODO file
>
> Laurent Pinchart (1):
>   ARM: dts: bcm2711: Add Unicam DT nodes
>
> Naushir Patuck (2):
>   media: uapi: Add MEDIA_BUS_FMT_CUSTOM_SENSOR_DATA
>   media: bcm2835-unicam: Driver for CCP2/CSI2 camera interface
>
>  .../bindings/media/brcm,bcm2835-unicam.yaml   |  155 +
>  .../userspace-api/media/v4l/meta-formats.rst  |    1 +
>  .../media/v4l/pixfmt-meta-sensor-data.rst     |   24 +
>  .../media/v4l/subdev-formats.rst              |   29 +
>  MAINTAINERS                                   |    7 +
>  arch/arm/boot/dts/bcm2711.dtsi                |   41 +
>  drivers/media/v4l2-core/v4l2-ioctl.c          |    1 +
>  drivers/staging/media/Kconfig                 |    2 +
>  drivers/staging/media/Makefile                |    1 +
>  drivers/staging/media/bcm2835-unicam/Kconfig  |   21 +
>  drivers/staging/media/bcm2835-unicam/Makefile |    3 +
>  drivers/staging/media/bcm2835-unicam/TODO     |   37 +
>  .../media/bcm2835-unicam/bcm2835-unicam.c     | 2750 +++++++++++++++++
>  .../media/bcm2835-unicam/vc4-regs-unicam.h    |  253 ++
>  include/uapi/linux/media-bus-format.h         |    3 +
>  include/uapi/linux/videodev2.h                |    1 +
>  16 files changed, 3329 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
>  create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-sensor-data.rst
>  create mode 100644 drivers/staging/media/bcm2835-unicam/Kconfig
>  create mode 100644 drivers/staging/media/bcm2835-unicam/Makefile
>  create mode 100644 drivers/staging/media/bcm2835-unicam/TODO
>  create mode 100644 drivers/staging/media/bcm2835-unicam/bcm2835-unicam.c
>  create mode 100644 drivers/staging/media/bcm2835-unicam/vc4-regs-unicam.h
>
> --
> 2.29.1
>



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