1 Kernel driver asb100 1 Kernel driver asb100
2 ==================== 2 ====================
3 3
4 Supported Chips: 4 Supported Chips:
5 5
6 * Asus ASB100 and ASB100-A "Bach" 6 * Asus ASB100 and ASB100-A "Bach"
7 7
8 Prefix: 'asb100' 8 Prefix: 'asb100'
9 9
10 Addresses scanned: I2C 0x2d 10 Addresses scanned: I2C 0x2d
11 11
12 Datasheet: none released 12 Datasheet: none released
13 13
14 Author: Mark M. Hoffman <mhoffman@lightlink.com 14 Author: Mark M. Hoffman <mhoffman@lightlink.com>
15 15
16 Description 16 Description
17 ----------- 17 -----------
18 18
19 This driver implements support for the Asus AS 19 This driver implements support for the Asus ASB100 and ASB100-A "Bach".
20 These are custom ASICs available only on Asus 20 These are custom ASICs available only on Asus mainboards. Asus refuses to
21 supply a datasheet for these chips. Thanks go 21 supply a datasheet for these chips. Thanks go to many people who helped
22 investigate their hardware, including: 22 investigate their hardware, including:
23 23
24 Vitaly V. Bursov 24 Vitaly V. Bursov
25 Alexander van Kaam (author of MBM for Windows) 25 Alexander van Kaam (author of MBM for Windows)
26 Bertrik Sikken 26 Bertrik Sikken
27 27
28 The ASB100 implements seven voltage sensors, t 28 The ASB100 implements seven voltage sensors, three fan rotation speed
29 sensors, four temperature sensors, VID lines a 29 sensors, four temperature sensors, VID lines and alarms. In addition to
30 these, the ASB100-A also implements a single P 30 these, the ASB100-A also implements a single PWM controller for fans 2 and
31 3 (i.e. one setting controls both.) If you hav 31 3 (i.e. one setting controls both.) If you have a plain ASB100, the PWM
32 controller will simply not work (or maybe it w 32 controller will simply not work (or maybe it will for you... it doesn't for
33 me). 33 me).
34 34
35 Temperatures are measured and reported in degr 35 Temperatures are measured and reported in degrees Celsius.
36 36
37 Fan speeds are reported in RPM (rotations per 37 Fan speeds are reported in RPM (rotations per minute). An alarm is
38 triggered if the rotation speed has dropped be 38 triggered if the rotation speed has dropped below a programmable limit.
39 39
40 Voltage sensors (also known as IN sensors) rep 40 Voltage sensors (also known as IN sensors) report values in volts.
41 41
42 The VID lines encode the core voltage value: t 42 The VID lines encode the core voltage value: the voltage level your
43 processor should work with. This is hardcoded 43 processor should work with. This is hardcoded by the mainboard and/or
44 processor itself. It is a value in volts. 44 processor itself. It is a value in volts.
45 45
46 Alarms: (TODO question marks indicate may or m 46 Alarms: (TODO question marks indicate may or may not work)
47 47
48 - 0x0001 => in0 (?) 48 - 0x0001 => in0 (?)
49 - 0x0002 => in1 (?) 49 - 0x0002 => in1 (?)
50 - 0x0004 => in2 50 - 0x0004 => in2
51 - 0x0008 => in3 51 - 0x0008 => in3
52 - 0x0010 => temp1 [1]_ 52 - 0x0010 => temp1 [1]_
53 - 0x0020 => temp2 53 - 0x0020 => temp2
54 - 0x0040 => fan1 54 - 0x0040 => fan1
55 - 0x0080 => fan2 55 - 0x0080 => fan2
56 - 0x0100 => in4 56 - 0x0100 => in4
57 - 0x0200 => in5 (?) [2]_ 57 - 0x0200 => in5 (?) [2]_
58 - 0x0400 => in6 (?) [2]_ 58 - 0x0400 => in6 (?) [2]_
59 - 0x0800 => fan3 59 - 0x0800 => fan3
60 - 0x1000 => chassis switch 60 - 0x1000 => chassis switch
61 - 0x2000 => temp3 61 - 0x2000 => temp3
62 62
63 .. [1] This alarm will only trigger if the hy 63 .. [1] This alarm will only trigger if the hysteresis value is 127C.
64 I.e. it behaves the same as w83781d. 64 I.e. it behaves the same as w83781d.
65 65
66 .. [2] The min and max registers for these va 66 .. [2] The min and max registers for these values appear to
67 be read-only or otherwise stuck at 0x0 67 be read-only or otherwise stuck at 0x00.
68 68
69 TODO: 69 TODO:
70 * Experiment with fan divisors > 8. 70 * Experiment with fan divisors > 8.
71 * Experiment with temp. sensor types. 71 * Experiment with temp. sensor types.
72 * Are there really 13 voltage inputs? Probab 72 * Are there really 13 voltage inputs? Probably not...
73 * Cleanups, no doubt... 73 * Cleanups, no doubt...
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