I2C Tools for Linux
The i2c-tools package contains a heterogeneous set of I2C tools for Linux: a bus probing tool, a chip dumper, register-level SMBus access helpers, EEPROM decoding scripts, EEPROM programming tools, and a python module for SMBus access. All versions of Linux are supported, as long as I2C support is included in the kernel.
These tools used to be part of the lm-sensors package, but were later split to a separate package. The rationale for that move is that not all hardware monitoring chips are I2C devices, and not all I2C devices are hardware monitoring chips, so having everything in a single package was confusing and impractical.
The current major version of i2c-tools is version 4. See the (still ongoing) plan that led there.
All released packages can be downloaded from https://www.kernel.org/pub/software/utils/i2c-tools/ (Mirror.) Files are signed by Jean Delvare.
Recommended patches for branch 3.1:
If you have git installed on your machine, you can check out the latest version of the stable code using the following command:
Or for the legacy branch:
git clone git://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git -b i2c-tools-3.1
You can also navigate the repository online at: https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/
Discussion and Bug Reports
Bugs can be filled at kernel.org's bugzilla under product "Tools", component "i2c-tools".