[PATCH v2 0/4] Support of MIPI CSI-2 for A83T

From: Kévin L'hôpital
Date: Fri Aug 28 2020 - 09:18:55 EST

This series adds the support for the MIPI CSI-2 controller for the A83T SoC.
The CSI controller is the same as the V3s SoC that's why I put the A83T
MIPI CSI-2 driver in sun6i-csi.
My work is based on the Allwinner BSP for A83T and also on MIPI CSI-2
specification for the A83T given by Allwinner.

v4l2-compliance SHA: not available, 32 bits

Compliance test for sun6i-video device /dev/video0:

Driver Info:
Driver name : sun6i-video
Card type : sun6i-csi
Bus info : platform:camera
Driver version : 5.5.0
Capabilities : 0x84200001
Video Capture
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04200001
Video Capture
Streaming
Extended Pix Format
Media Driver Info:
Driver name : sun6i-csi
Model : Allwinner Video Capture Device
Serial :
Bus info :
Media version : 5.5.0
Hardware revision: 0x00000000 (0)
Driver version : 5.5.0
Interface Info:
ID : 0x03000003
Type : V4L Video
Entity Info:
ID : 0x00000001 (1)
Name : sun6i-csi
Function : V4L2 I/O
Pad 0x01000002 : 0: Sink, Must Connect
Link 0x02000007: from remote pad 0x1000006 of entity 'ov8865 1-0036': 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

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: 7 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)
test Cropping: OK (Not Supported)
test Composing: OK (Not Supported)
test Scaling: OK

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)

Total for sun6i-video device /dev/video0: 45, Succeeded: 45, Failed: 0, Warnings: 0

Changes since V1:
- Add more details in the cover letter.
- Add a test to get the clocks to avoid an error for the platform without MIPI
CSI-2.
- Add more details in the register assignations.
- Removed the support of multiple virtual channels because there is only one
channel support in the CSI driver.

Kévin L'hôpital (4):
media: sun6i-csi: Fix the bpp for 10-bit bayer formats
media: sunxi: sun6i-csi: Move the sun6i_csi_dev structure to the
common header
media: sunxi: sun6i-csi: Add support of MIPI CSI-2 for A83T
ARM: dts: sun8i: a83t: Add support for the MIPI CSI-2 in CSI node

arch/arm/boot/dts/sun8i-a83t.dtsi | 11 +-
.../media/platform/sunxi/sun6i-csi/Makefile | 2 +-
.../platform/sunxi/sun6i-csi/sun6i_csi.c | 96 +++++---
.../platform/sunxi/sun6i-csi/sun6i_csi.h | 14 +-
.../sunxi/sun6i-csi/sun8i_a83t_dphy.c | 39 ++++
.../sunxi/sun6i-csi/sun8i_a83t_dphy.h | 16 ++
.../sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h | 39 ++++
.../sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c | 217 ++++++++++++++++++
.../sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h | 16 ++
.../sun6i-csi/sun8i_a83t_mipi_csi2_reg.h | 179 +++++++++++++++
10 files changed, 595 insertions(+), 34 deletions(-)
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.c
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy.h
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_dphy_reg.h
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.c
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2.h
create mode 100644 drivers/media/platform/sunxi/sun6i-csi/sun8i_a83t_mipi_csi2_reg.h

--
2.17.1