projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | Kernel driver i2c-viapro |
| 2 | ||
| 3 | Supported adapters: | |
| 4 | * VIA Technologies, Inc. VT82C596A/B | |
| 5 | Datasheet: Sometimes available at the VIA website | |
| 6 | ||
| 5f49ef8e | 7 | * VIA Technologies, Inc. VT82C686A/B |
| 1da177e4 LT |
8 | Datasheet: Sometimes available at the VIA website |
| 9 | ||
| c243353a | 10 | * VIA Technologies, Inc. VT8231, VT8233, VT8233A |
| 8750197f | 11 | Datasheet: available on request from VIA |
| 1da177e4 | 12 | |
| c243353a RM |
13 | * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8251 |
| 14 | Datasheet: available on request and under NDA from VIA | |
| 15 | ||
| ab6a6ed2 JD |
16 | * VIA Technologies, Inc. CX700 |
| 17 | Datasheet: available on request and under NDA from VIA | |
| 18 | ||
| 1da177e4 | 19 | Authors: |
| be2a608b | 20 | Kyösti Mälkki <kmalkki@cc.hut.fi>, |
| f1183014 JD |
21 | Mark D. Studebaker <mdsxyz123@yahoo.com>, |
| 22 | Jean Delvare <khali@linux-fr.org> | |
| 1da177e4 LT |
23 | |
| 24 | Module Parameters | |
| 25 | ----------------- | |
| 26 | ||
| 27 | * force: int | |
| 28 | Forcibly enable the SMBus controller. DANGEROUS! | |
| 29 | * force_addr: int | |
| 30 | Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS! | |
| 31 | ||
| 32 | Description | |
| 33 | ----------- | |
| 34 | ||
| 35 | i2c-viapro is a true SMBus host driver for motherboards with one of the | |
| aaf7f147 | 36 | supported VIA south bridges. |
| 1da177e4 LT |
37 | |
| 38 | Your lspci -n listing must show one of these : | |
| 39 | ||
| aaf7f147 JD |
40 | device 1106:3050 (VT82C596A function 3) |
| 41 | device 1106:3051 (VT82C596B function 3) | |
| 1da177e4 LT |
42 | device 1106:3057 (VT82C686 function 4) |
| 43 | device 1106:3074 (VT8233) | |
| 44 | device 1106:3147 (VT8233A) | |
| aaf7f147 JD |
45 | device 1106:8235 (VT8231 function 4) |
| 46 | device 1106:3177 (VT8235) | |
| 47 | device 1106:3227 (VT8237R) | |
| c243353a RM |
48 | device 1106:3337 (VT8237A) |
| 49 | device 1106:3287 (VT8251) | |
| ab6a6ed2 | 50 | device 1106:8324 (CX700) |
| 1da177e4 LT |
51 | |
| 52 | If none of these show up, you should look in the BIOS for settings like | |
| 53 | enable ACPI / SMBus or even USB. | |
| f1183014 JD |
54 | |
| 55 | Except for the oldest chips (VT82C596A/B, VT82C686A and most probably | |
| 56 | VT8231), this driver supports I2C block transactions. Such transactions | |
| 57 | are mainly useful to read from and write to EEPROMs. | |
| ab6a6ed2 JD |
58 | |
| 59 | The CX700 additionally appears to support SMBus PEC, although this driver | |
| 60 | doesn't implement it yet. |