1 Kernel driver emc6w201 1 Kernel driver emc6w201
2 ====================== 2 ======================
3 3
4 Supported chips: 4 Supported chips:
5 5
6 * SMSC EMC6W201 6 * SMSC EMC6W201
7 7
8 Prefix: 'emc6w201' 8 Prefix: 'emc6w201'
9 9
10 Addresses scanned: I2C 0x2c, 0x2d, 0x2e 10 Addresses scanned: I2C 0x2c, 0x2d, 0x2e
11 11
12 Datasheet: Not public 12 Datasheet: Not public
13 13
14 Author: Jean Delvare <jdelvare@suse.de> 14 Author: Jean Delvare <jdelvare@suse.de>
15 15
16 16
17 Description 17 Description
18 ----------- 18 -----------
19 19
20 From the datasheet: 20 From the datasheet:
21 21
22 "The EMC6W201 is an environmental monitoring d 22 "The EMC6W201 is an environmental monitoring device with automatic fan
23 control capability and enhanced system acousti 23 control capability and enhanced system acoustics for noise suppression.
24 This ACPI compliant device provides hardware m 24 This ACPI compliant device provides hardware monitoring for up to six
25 voltages (including its own VCC) and five exte 25 voltages (including its own VCC) and five external thermal sensors,
26 measures the speed of up to five fans, and con 26 measures the speed of up to five fans, and controls the speed of
27 multiple DC fans using three Pulse Width Modul 27 multiple DC fans using three Pulse Width Modulator (PWM) outputs. Note
28 that it is possible to control more than three 28 that it is possible to control more than three fans by connecting two
29 fans to one PWM output. The EMC6W201 will be a 29 fans to one PWM output. The EMC6W201 will be available in a 36-pin
30 QFN package." 30 QFN package."
31 31
32 The device is functionally close to the EMC6D1 32 The device is functionally close to the EMC6D100 series, but is
33 register-incompatible. 33 register-incompatible.
34 34
35 The driver currently only supports the monitor 35 The driver currently only supports the monitoring of the voltages,
36 temperatures and fan speeds. Limits can be cha 36 temperatures and fan speeds. Limits can be changed. Alarms are not
37 supported, and neither is fan speed control. 37 supported, and neither is fan speed control.
38 38
39 39
40 Known Systems With EMC6W201 40 Known Systems With EMC6W201
41 --------------------------- 41 ---------------------------
42 42
43 The EMC6W201 is a rare device, only found on a 43 The EMC6W201 is a rare device, only found on a few systems, made in
44 2005 and 2006. Known systems with this device: 44 2005 and 2006. Known systems with this device:
45 45
46 * Dell Precision 670 workstation 46 * Dell Precision 670 workstation
47 * Gigabyte 2CEWH mainboard 47 * Gigabyte 2CEWH mainboard
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