projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f15b664 M |
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 M |
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. | |
| 43 | ||
| 44 | Description | |
| 45 | ----------- | |
| 46 | ||
| 47 | This driver implements support for ISA accesses *only* for | |
| 48 | the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips. | |
| 49 | We will refer to them collectively as Winbond chips. | |
| 50 | ||
| 51 | This driver supports ISA accesses, which should be more reliable | |
| 52 | than i2c accesses. Also, for Tyan boards which contain both a | |
| 53 | Super I/O chip and a second i2c-only Winbond chip (often a W83782D), | |
| 54 | using this driver will avoid i2c address conflicts and complex | |
| 55 | initialization that were required in the w83781d driver. | |
| 56 | ||
| 57 | If you really want i2c accesses for these Super I/O chips, | |
| 58 | use the w83781d driver. However this is not the preferred method | |
| 59 | now that this ISA driver has been developed. | |
| 60 | ||
| 5b319400 MH |
61 | The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the |
| 62 | same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a | |
| 63 | VID reading. However the two chips have the identical 128 pin package. So, | |
| 64 | it is possible or even likely for a w83627thf to have the VID signals routed | |
| 65 | to these pins despite their not being labeled for that purpose. Therefore, | |
| 66 | the w83627thf driver interprets these as VID. If the VID on your board | |
| 67 | doesn't work, first see doc/vid in the lm_sensors package[1]. If that still | |
| 68 | doesn't help, you may just ignore the bogus VID reading with no harm done. | |
| 7f15b664 | 69 | |
| 5b319400 MH |
70 | For further information on this driver see the w83781d driver documentation. |
| 71 | ||
| ec1d86c4 | 72 | [1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid |