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- Kernel driver i2c-taos-evm
- Author: Jean Delvare <jdelvare@suse.de>
- This is a driver for the evaluation modules for TAOS I2C/SMBus chips.
- The modules include an SMBus master with limited capabilities, which can
- be controlled over the serial port. Virtually all evaluation modules
- are supported, but a few lines of code need to be added for each new
- module to instantiate the right I2C chip on the bus. Obviously, a driver
- for the chip in question is also needed.
- Currently supported devices are:
- * TAOS TSL2550 EVM
- For additional information on TAOS products, please see
- http://www.taosinc.com/
- Using this driver
- -----------------
- In order to use this driver, you'll need the serport driver, and the
- inputattach tool, which is part of the input-utils package. The following
- commands will tell the kernel that you have a TAOS EVM on the first
- serial port:
- # modprobe serport
- # inputattach --taos-evm /dev/ttyS0
- Technical details
- -----------------
- Only 4 SMBus transaction types are supported by the TAOS evaluation
- modules:
- * Receive Byte
- * Send Byte
- * Read Byte
- * Write Byte
- The communication protocol is text-based and pretty simple. It is
- described in a PDF document on the CD which comes with the evaluation
- module. The communication is rather slow, because the serial port has
- to operate at 1200 bps. However, I don't think this is a big concern in
- practice, as these modules are meant for evaluation and testing only.
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