1 Kernel driver thmc50
2 =====================
3
4 Supported chips:
5
6 * Analog Devices ADM1022
7
8 Prefix: 'adm1022'
9
10 Addresses scanned: I2C 0x2c - 0x2e
11
12 Datasheet: http://www.analog.com/en/prod/0
13
14 * Texas Instruments THMC50
15
16 Prefix: 'thmc50'
17
18 Addresses scanned: I2C 0x2c - 0x2e
19
20 Datasheet: https://www.ti.com/
21
22
23 Author: Krzysztof Helt <krzysztof.h1@wp.pl>
24
25 This driver was derived from the 2.4 kernel th
26
27 Credits:
28
29 thmc50.c (2.4 kernel):
30
31 - Frodo Looijaard <frodol@dds.nl>
32 - Philip Edelbrock <phil@netroedge.com>
33
34 Module Parameters
35 -----------------
36
37 * adm1022_temp3: short array
38 List of adapter,address pairs to force chi
39 second remote temperature. This does not w
40
41 Description
42 -----------
43
44 The THMC50 implements: an internal temperature
45 external diode-type temperature sensor (compat
46 many processors), and a controllable fan/analo
47 sensors, limits can be set through the appropr
48 register and Hysteresis register. Each value c
49 accuracy. An alarm is issued (usually to a co
50 temperature gets higher then the Overtemperatu
51 until the temperature falls below the Hysteres
52 degrees Celsius, and are guaranteed within a r
53
54 The THMC50 only updates its values each 1.5 se
55 will do no harm, but will return 'old' values.
56
57 The THMC50 is usually used in combination with
58 the temperature of the processor(s).
59
60 The ADM1022 works the same as THMC50 but it is
61 1 Hz for THMC50). It can be also put in a new
62 remote temperature sensor. The driver use the
63
64 In case the BIOS is broken and the mode is set
65 the mode with additional remote temperature wi
66 A typical symptom of wrong setting is a fan fo
67
68 Driver Features
69 ---------------
70
71 The driver provides up to three temperatures:
72
73 temp1
74 - internal
75 temp2
76 - remote
77 temp3
78 - 2nd remote only for ADM1022
79
80 pwm1
81 - fan speed (0 = stop, 255 = full)
82 pwm1_mode
83 - always 0 (DC mode)
84
85 The value of 0 for pwm1 also forces FAN_OFF si
86 so it stops fans even if the value 0 into the
87
88 The driver was tested on Compaq AP550 with two
89 in the temp3 mode), five temperature readings
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