Kernel driver gsc-hwmon

Supported chips: Gateworks GSC Datasheet: http://trac.gateworks.com/wiki/gsc Author: Tim Harvey <tharvey@gateworks.com>

Description:

This driver supports hardware monitoring for the temperature sensor, various ADC’s connected to the GSC, and optional FAN controller available on some boards.

Voltage Monitoring

The voltage inputs are scaled either internally or by the driver depending on the GSC version and firmware. The values returned by the driver do not need further scaling. The voltage input labels provide the voltage rail name:

inX_input Measured voltage (mV). inX_label Name of voltage rail.

Temperature Monitoring

Temperatures are measured with 12-bit or 10-bit resolution and are scaled either internally or by the driver depending on the GSC version and firmware. The values returned by the driver reflect millidegree Celcius:

tempX_input Measured temperature. tempX_label Name of temperature input.

PWM Output Control

The GSC features 1 PWM output that operates in automatic mode where the PWM value will be scalled depending on 6 temperature boundaries. The tempeature boundaries are read-write and in millidegree Celcius and the read-only PWM values range from 0 (off) to 255 (full speed). Fan speed will be set to minimum (off) when the temperature sensor reads less than pwm1_auto_point1_temp and maximum when the temperature sensor equals or exceeds pwm1_auto_point6_temp.

pwm1_auto_point[1-6]_pwm PWM value. pwm1_auto_point[1-6]_temp Temperature boundary.