|  | Kernel driver emc6w201 | 
|  | ====================== | 
|  |  | 
|  | Supported chips: | 
|  | * SMSC EMC6W201 | 
|  | Prefix: 'emc6w201' | 
|  | Addresses scanned: I2C 0x2c, 0x2d, 0x2e | 
|  | Datasheet: Not public | 
|  |  | 
|  | Author: Jean Delvare <jdelvare@suse.de> | 
|  |  | 
|  |  | 
|  | Description | 
|  | ----------- | 
|  |  | 
|  | From the datasheet: | 
|  |  | 
|  | "The EMC6W201 is an environmental monitoring device with automatic fan | 
|  | control capability and enhanced system acoustics for noise suppression. | 
|  | This ACPI compliant device provides hardware monitoring for up to six | 
|  | voltages (including its own VCC) and five external thermal sensors, | 
|  | measures the speed of up to five fans, and controls the speed of | 
|  | multiple DC fans using three Pulse Width Modulator (PWM) outputs. Note | 
|  | that it is possible to control more than three fans by connecting two | 
|  | fans to one PWM output. The EMC6W201 will be available in a 36-pin | 
|  | QFN package." | 
|  |  | 
|  | The device is functionally close to the EMC6D100 series, but is | 
|  | register-incompatible. | 
|  |  | 
|  | The driver currently only supports the monitoring of the voltages, | 
|  | temperatures and fan speeds. Limits can be changed. Alarms are not | 
|  | supported, and neither is fan speed control. | 
|  |  | 
|  |  | 
|  | Known Systems With EMC6W201 | 
|  | --------------------------- | 
|  |  | 
|  | The EMC6W201 is a rare device, only found on a few systems, made in | 
|  | 2005 and 2006. Known systems with this device: | 
|  | * Dell Precision 670 workstation | 
|  | * Gigabyte 2CEWH mainboard |