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