| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | Kernel driver i2c-viapro |
| 2 | |
| 3 | Supported adapters: |
| 4 | * VIA Technologies, Inc. VT82C596A/B |
| 5 | Datasheet: Sometimes available at the VIA website |
| 6 | |
| 7 | * VIA Technologies, Inc. VT82C686A/B |
| 8 | Datasheet: Sometimes available at the VIA website |
| 9 | |
| 10 | * VIA Technologies, Inc. VT8231, VT8233, VT8233A |
| 11 | Datasheet: available on request from VIA |
| 12 | |
| 13 | * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251 |
| 14 | Datasheet: available on request and under NDA from VIA |
| 15 | |
| 16 | * VIA Technologies, Inc. CX700 |
| 17 | Datasheet: available on request and under NDA from VIA |
| 18 | |
| 19 | * VIA Technologies, Inc. VX800/VX820 |
| 20 | Datasheet: available on http://linux.via.com.tw |
| 21 | |
| 22 | * VIA Technologies, Inc. VX855/VX875 |
| 23 | Datasheet: available on http://linux.via.com.tw |
| 24 | |
| 25 | * VIA Technologies, Inc. VX900 |
| 26 | Datasheet: available on http://linux.via.com.tw |
| 27 | |
| 28 | Authors: |
| 29 | Kyösti Mälkki <kmalkki@cc.hut.fi>, |
| 30 | Mark D. Studebaker <mdsxyz123@yahoo.com>, |
| 31 | Jean Delvare <jdelvare@suse.de> |
| 32 | |
| 33 | Module Parameters |
| 34 | ----------------- |
| 35 | |
| 36 | * force: int |
| 37 | Forcibly enable the SMBus controller. DANGEROUS! |
| 38 | * force_addr: int |
| 39 | Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS! |
| 40 | |
| 41 | Description |
| 42 | ----------- |
| 43 | |
| 44 | i2c-viapro is a true SMBus host driver for motherboards with one of the |
| 45 | supported VIA south bridges. |
| 46 | |
| 47 | Your lspci -n listing must show one of these : |
| 48 | |
| 49 | device 1106:3050 (VT82C596A function 3) |
| 50 | device 1106:3051 (VT82C596B function 3) |
| 51 | device 1106:3057 (VT82C686 function 4) |
| 52 | device 1106:3074 (VT8233) |
| 53 | device 1106:3147 (VT8233A) |
| 54 | device 1106:8235 (VT8231 function 4) |
| 55 | device 1106:3177 (VT8235) |
| 56 | device 1106:3227 (VT8237R) |
| 57 | device 1106:3337 (VT8237A) |
| 58 | device 1106:3372 (VT8237S) |
| 59 | device 1106:3287 (VT8251) |
| 60 | device 1106:8324 (CX700) |
| 61 | device 1106:8353 (VX800/VX820) |
| 62 | device 1106:8409 (VX855/VX875) |
| 63 | device 1106:8410 (VX900) |
| 64 | |
| 65 | If none of these show up, you should look in the BIOS for settings like |
| 66 | enable ACPI / SMBus or even USB. |
| 67 | |
| 68 | Except for the oldest chips (VT82C596A/B, VT82C686A and most probably |
| 69 | VT8231), this driver supports I2C block transactions. Such transactions |
| 70 | are mainly useful to read from and write to EEPROMs. |
| 71 | |
| 72 | The CX700/VX800/VX820 additionally appears to support SMBus PEC, although |
| 73 | this driver doesn't implement it yet. |