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7f15b664 RM |
1 | Kernel driver w83627hf |
2 | ====================== | |
3 | ||
4 | Supported chips: | |
5 | * Winbond W83627HF (ISA accesses ONLY) | |
6 | Prefix: 'w83627hf' | |
7 | Addresses scanned: ISA address retrieved from Super I/O registers | |
8 | Datasheet: http://www.winbond.com/PDF/sheet/w83627hf.pdf | |
9 | * Winbond W83627THF | |
10 | Prefix: 'w83627thf' | |
11 | Addresses scanned: ISA address retrieved from Super I/O registers | |
12 | Datasheet: http://www.winbond.com/PDF/sheet/w83627thf.pdf | |
13 | * Winbond W83697HF | |
14 | Prefix: 'w83697hf' | |
15 | Addresses scanned: ISA address retrieved from Super I/O registers | |
16 | Datasheet: http://www.winbond.com/PDF/sheet/697hf.pdf | |
17 | * Winbond W83637HF | |
18 | Prefix: 'w83637hf' | |
19 | Addresses scanned: ISA address retrieved from Super I/O registers | |
20 | Datasheet: http://www.winbond.com/PDF/sheet/w83637hf.pdf | |
c2db6ce1 JD |
21 | * Winbond W83687THF |
22 | Prefix: 'w83687thf' | |
23 | Addresses scanned: ISA address retrieved from Super I/O registers | |
24 | Datasheet: Provided by Winbond on request | |
7f15b664 RM |
25 | |
26 | Authors: | |
27 | Frodo Looijaard <frodol@dds.nl>, | |
28 | Philip Edelbrock <phil@netroedge.com>, | |
29 | Mark Studebaker <mdsxyz123@yahoo.com>, | |
30 | Bernhard C. Schrenk <clemy@clemy.org> | |
31 | ||
32 | Module Parameters | |
33 | ----------------- | |
34 | ||
35 | * force_addr: int | |
36 | Initialize the ISA address of the sensors | |
37 | * force_i2c: int | |
38 | Initialize the I2C address of the sensors | |
39 | * init: int | |
40 | (default is 1) | |
41 | Use 'init=0' to bypass initializing the chip. | |
42 | Try this if your computer crashes when you load the module. | |
a40f0b0f JD |
43 | * reset: int |
44 | (default is 0) | |
45 | The driver used to reset the chip on load, but does no more. Use | |
46 | 'reset=1' to restore the old behavior. Report if you need to do this. | |
7f15b664 RM |
47 | |
48 | Description | |
49 | ----------- | |
50 | ||
51 | This driver implements support for ISA accesses *only* for | |
52 | the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips. | |
53 | We will refer to them collectively as Winbond chips. | |
54 | ||
55 | This driver supports ISA accesses, which should be more reliable | |
56 | than i2c accesses. Also, for Tyan boards which contain both a | |
57 | Super I/O chip and a second i2c-only Winbond chip (often a W83782D), | |
58 | using this driver will avoid i2c address conflicts and complex | |
59 | initialization that were required in the w83781d driver. | |
60 | ||
61 | If you really want i2c accesses for these Super I/O chips, | |
62 | use the w83781d driver. However this is not the preferred method | |
63 | now that this ISA driver has been developed. | |
64 | ||
5b319400 MH |
65 | The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the |
66 | same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a | |
67 | VID reading. However the two chips have the identical 128 pin package. So, | |
68 | it is possible or even likely for a w83627thf to have the VID signals routed | |
69 | to these pins despite their not being labeled for that purpose. Therefore, | |
70 | the w83627thf driver interprets these as VID. If the VID on your board | |
71 | doesn't work, first see doc/vid in the lm_sensors package[1]. If that still | |
72 | doesn't help, you may just ignore the bogus VID reading with no harm done. | |
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5b319400 MH |
74 | For further information on this driver see the w83781d driver documentation. |
75 | ||
76 | [1] http://www2.lm-sensors.nu/~lm78/cvs/browse.cgi/lm_sensors2/doc/vid | |
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