This patchset adds the Sony IMX471 camera sensor driver to the Linux
kernel and resolves the IPU7 camera can't work issueon Lenovo X9
laptops [1].

The patchset contains two patches:
1. Add DMI information of Lenovo X9 to the image upside-down list
2. Add Sony IMX471 image sensor driver

The IMX471 driver can be found in the Intel ipu6-drivers repository [2].
To comply with the sensor driver implementation, the clean-up work
includes:

1. Use CCI register helpers.

2. Enable and disable streams using enable_streams and disable_streams
   functions in struct v4l2_subdev_pad_ops. Invoke
   v4l2_subdev_s_stream_helper() to manage the streaming state.

3. Get rotation information from fwnode properties using
   v4l2_fwnode_device_parse().

4. Finalizes the initialization of the subdev, including allocation of
   the active state using v4l2_subdev_init_finalize().

5. Add the IMX471 driver to the Makefile and Kconfig file.

6. The mutex lock is managed by the V4l2 core.

7. Replace the supported link frequency with v4l2_link_freq_to_bitmap().

8. Drop unused codes.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2454119
[2] https://github.com/intel/ipu6-drivers/tree/master/drivers/media/i2c/imx471.c


Kate Hsuan (2):
  media: ipu-bridge: Add DMI information of Lenovo X9 to the image
    upside-down list
  media: i2c: imx471: Add Sony IMX471 image sensor driver

 MAINTAINERS                          |    7 +
 drivers/media/i2c/Kconfig            |   10 +
 drivers/media/i2c/Makefile           |    1 +
 drivers/media/i2c/imx471.c           | 1047 ++++++++++++++++++++++++++
 drivers/media/pci/intel/ipu-bridge.c |   32 +
 5 files changed, 1097 insertions(+)
 create mode 100644 drivers/media/i2c/imx471.c

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2.53.0