Intel IPU driver

There are 4 repositories:

• https://github.com/intel/ipu6-drivers/tree/iotg_ipu6 - kernel drivers for the IPU and sensors
• https://github.com/intel/ipu6-camera-bins/tree/iotg_ipu6 - IPU firmware and proprietary image processing libraries
• https://github.com/intel/ipu6-camera-hal/tree/iotg_ipu6 - HAL for processing of images in userspace
• https://github.com/intel/icamerasrc/tree/icamerasrc_slim_api (branch:icamerasrc_slim_api) - Gstreamer src plugin

Content of this repository:

• Intel IPU kernel driver
• Drivers for AR0234, LT6911UXC, D457, TI960 and IMX390

Build instructions:

Three ways are available:

1. build with kernel source tree
2. build out of kernel source tree
3. build with dkms

1. Build with kernel source tree

• Check out kernel source tree
• Apply patche based on kernel version:

  # For kernel version = 5.19, use patches in patch_5.19_mainline
	patch_5.19_mainline/*.patch
  # For kernel version = 6.2, use patches in patch_6.2_mainline
        patch_6.2_mainline/*.patch

• Copy repo content to kernel source (except Makefile and {Kconfig, Makefile} under "drivers/media/i2c/", they need to be changed manually)
• Modify related Kconfig and Makefile
• Add config in "drivers/media/i2c/Kconfig"

config VIDEO_TI960
  tristate "TI960 driver support"
  depends on VIDEO_DEV && I2C
  help
    This is a driver for TI960 Deserializer.

config VIDEO_AR0234 
  tristate "OnSemi AR0234 sensor support" 
  depends on VIDEO_DEV && I2C
  depends on MEDIA_CAMERA_SUPPORT 
  select VIDEO_V4L2_SUBDEV_API
  help This is a Video4Linux2 sensor-level driver for the OnSemi ar0234 camera.
    AR0234 is a 2Mp Digital image sensor with global shutter.

config VIDEO_LT6911UXC
  tristate "Lontium LT6911UXC decoder"
  depends on VIDEO_DEV && I2C
  select VIDEO_V4L2_SUBDEV_API
  help
    This is a Video4Linux2 sensor-level driver for the Lontium
    LT6911UXC HDMI to MIPI CSI-2 bridge.

   To compile this driver as a module, choose M here: the
    module will be called lt6911uxc.

config VIDEO_D4XX
  depends on VIDEO_DEV && I2C
  tristate "D4XX Camera Driver"
  help
    This is a Video4Linux2 sensor-level driver for intel realsence camera.

config VIDEO_IMX390
  depends on VIDEO_DEV && I2C
  tristate "IMX390 Camera Driver"
  help
    This is a Video4Linux2 sensor-level driver for Sony IMX390 camera.

• Add to drivers/media/i2c/Makefile

obj-$(CONFIG_VIDEO_AR0234) += ar0234.o 
obj-$(CONFIG_VIDEO_LT6911UXC) += lt6911uxc.o 
obj-$(CONFIG_VIDEO_D4XX) += d4xx.o
ti960-objs      := ti953-ser.o ti960-des.o
obj-$(CONFIG_VIDEO_TI960) += ti960.o
obj-$(CONFIG_VIDEO_IMX390) += imx390.o

• Modify drivers/media/pci/Kconfig

	# replace line:
	# source "drivers/media/pci/intel/ipu3/Kconfig"
	# with line:
	source "drivers/media/pci/intel/Kconfig"

• Enable below settings in .config

 CONFIG_VIDEO_INTEL_IPU6=m 
 CONFIG_INTEL_SKL_INT3472=m 
 CONFIG_VIDEO_AR0234=m 
 CONFIG_VIDEO_LT6911UXC=m 
 CONFIG_VIDEO_D4XX=m 
 CONFIG_VIDEO_TI960=m
 CONFIG_VIDEO_IMX390=m
 CONFIG_INTEL_IPU6_ACPI=m
 CONFIG_VIDEO_INTEL_IPU_SOC=y
 CONFIG_VIDEO_INTEL_IPU_USE_PLATFORMDATA=y

2. Build outside kernel source tree

• Requires kernel header installed on build machine

• To build and install:

	make -j`nproc` && sudo make modules_install && sudo depmod -a

3. Build with dkms

• Register, build and auto install:

   Install kernel header src.
   sudo dkms add .
   sudo dkms build -m ipu6-drivers -v 0.0.1
   sudo dkms autoinstall ipu6-drivers/0.0.1