| Kernel driver emc6w201 | 
 | ====================== | 
 |  | 
 | Supported chips: | 
 |   * SMSC EMC6W201 | 
 |     Prefix: 'emc6w201' | 
 |     Addresses scanned: I2C 0x2c, 0x2d, 0x2e | 
 |     Datasheet: Not public | 
 |  | 
 | Author: Jean Delvare <khali@linux-fr.org> | 
 |  | 
 |  | 
 | 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 |