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i2c: add i2c bus driver for NVIDIA GPU

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Latest NVIDIA GPU card has USB Type-C interface. There is a
Type-C controller which can be accessed over I2C.

This driver adds I2C bus driver to communicate with Type-C controller.
I2C client driver will be part of USB Type-C UCSI driver.

Signed-off-by: Ajay Gupta <ajayg@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[wsa: kept Makefile sorting]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Ajay Gupta 2018-10-26 09:36:58 -07:00 • committed by Wolfram Sang
parent 848bd3f3de
commit c71bcdcb42
5 changed files with 403 additions and 0 deletions
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Documentation/i2c/busses/i2c-nvidia-gpu Normal file
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Kernel driver i2c-nvidia-gpu
Datasheet: not publicly available.
Authors:
Ajay Gupta <ajayg@nvidia.com>
Description
-----------
i2c-nvidia-gpu is a driver for I2C controller included in NVIDIA Turing
and later GPUs and it is used to communicate with Type-C controller on GPUs.
If your 'lspci -v' listing shows something like the following,
01:00.3 Serial bus controller [0c80]: NVIDIA Corporation Device 1ad9 (rev a1)
then this driver should support the I2C controller of your GPU.