| Kernel driver i2c-viapro |
| |
| Supported adapters: |
| * VIA Technologies, Inc. VT82C596A/B |
| Datasheet: Sometimes available at the VIA website |
| |
| * VIA Technologies, Inc. VT82C686A/B |
| Datasheet: Sometimes available at the VIA website |
| |
| * VIA Technologies, Inc. VT8231, VT8233, VT8233A |
| Datasheet: available on request from VIA |
| |
| * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251 |
| Datasheet: available on request and under NDA from VIA |
| |
| * VIA Technologies, Inc. CX700 |
| Datasheet: available on request and under NDA from VIA |
| |
| * VIA Technologies, Inc. VX800/VX820 |
| Datasheet: available on http://linux.via.com.tw |
| |
| * VIA Technologies, Inc. VX855/VX875 |
| Datasheet: Availability unknown |
| |
| Authors: |
| Kyösti Mälkki <kmalkki@cc.hut.fi>, |
| Mark D. Studebaker <mdsxyz123@yahoo.com>, |
| Jean Delvare <khali@linux-fr.org> |
| |
| Module Parameters |
| ----------------- |
| |
| * force: int |
| Forcibly enable the SMBus controller. DANGEROUS! |
| * force_addr: int |
| Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS! |
| |
| Description |
| ----------- |
| |
| i2c-viapro is a true SMBus host driver for motherboards with one of the |
| supported VIA south bridges. |
| |
| Your lspci -n listing must show one of these : |
| |
| device 1106:3050 (VT82C596A function 3) |
| device 1106:3051 (VT82C596B function 3) |
| device 1106:3057 (VT82C686 function 4) |
| device 1106:3074 (VT8233) |
| device 1106:3147 (VT8233A) |
| device 1106:8235 (VT8231 function 4) |
| device 1106:3177 (VT8235) |
| device 1106:3227 (VT8237R) |
| device 1106:3337 (VT8237A) |
| device 1106:3372 (VT8237S) |
| device 1106:3287 (VT8251) |
| device 1106:8324 (CX700) |
| device 1106:8353 (VX800/VX820) |
| device 1106:8409 (VX855/VX875) |
| |
| If none of these show up, you should look in the BIOS for settings like |
| enable ACPI / SMBus or even USB. |
| |
| Except for the oldest chips (VT82C596A/B, VT82C686A and most probably |
| VT8231), this driver supports I2C block transactions. Such transactions |
| are mainly useful to read from and write to EEPROMs. |
| |
| The CX700/VX800/VX820 additionally appears to support SMBus PEC, although |
| this driver doesn't implement it yet. |