Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver i2c-taos-evm 2 3 Author: Jean Delvare <jdelvare@suse.de> 4 5 This is a driver for the evaluation modules for TAOS I2C/SMBus chips. 6 The modules include an SMBus master with limited capabilities, which can 7 be controlled over the serial port. Virtually all evaluation modules 8 are supported, but a few lines of code need to be added for each new 9 module to instantiate the right I2C chip on the bus. Obviously, a driver 10 for the chip in question is also needed. 11 12 Currently supported devices are: 13 14 * TAOS TSL2550 EVM 15 16 For additional information on TAOS products, please see 17 http://www.taosinc.com/ 18 19 20 Using this driver 21 ----------------- 22 23 In order to use this driver, you'll need the serport driver, and the 24 inputattach tool, which is part of the input-utils package. The following 25 commands will tell the kernel that you have a TAOS EVM on the first 26 serial port: 27 28 # modprobe serport 29 # inputattach --taos-evm /dev/ttyS0 30 31 32 Technical details 33 ----------------- 34 35 Only 4 SMBus transaction types are supported by the TAOS evaluation 36 modules: 37 * Receive Byte 38 * Send Byte 39 * Read Byte 40 * Write Byte 41 42 The communication protocol is text-based and pretty simple. It is 43 described in a PDF document on the CD which comes with the evaluation 44 module. The communication is rather slow, because the serial port has 45 to operate at 1200 bps. However, I don't think this is a big concern in 46 practice, as these modules are meant for evaluation and testing only.