1Kernel driver tc654 2=================== 3 4Supported chips: 5 6 * Microchip TC654 and TC655 7 8 Prefix: 'tc654' 9 Datasheet: http://ww1.m 10 icrochip.com/downloads/en/DeviceDoc/20001734C.pdf 11 12Authors: 13 - Chris Packham <chris.packham@alliedtelesis.co.nz> 14 - Masahiko Iwamoto <iwamoto@allied-telesis.co.jp> 15 16Description 17----------- 18This driver implements support for the Microchip TC654 and TC655. 19 20The TC654 uses the 2-wire interface compatible with the SMBUS 2.0 21specification. The TC654 has two (2) inputs for measuring fan RPM and 22one (1) PWM output which can be used for fan control. 23 24Configuration Notes 25------------------- 26Ordinarily the pwm1_mode ABI is used for controlling the pwm output 27mode. However, for this chip the output is always pwm, and the 28pwm1_mode determines if the pwm output is controlled via the pwm1 value 29or via the Vin analog input. 30 31 32Setting pwm1_mode to 1 will cause the pwm output to be driven based on 33the pwm1 value. Setting pwm1_mode to 0 will cause the pwm output to be 34driven based on the Vin input. 35