1 Kernel driver i2c-viapro
4 * VIA Technologies, Inc. VT82C596A/B
5 Datasheet: Sometimes available at the VIA website
7 * VIA Technologies, Inc. VT82C686A/B
8 Datasheet: Sometimes available at the VIA website
10 * VIA Technologies, Inc. VT8231, VT8233, VT8233A
11 Datasheet: available on request from VIA
13 * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8251
14 Datasheet: available on request and under NDA from VIA
16 * VIA Technologies, Inc. CX700
17 Datasheet: available on request and under NDA from VIA
20 Kyösti Mälkki <kmalkki@cc.hut.fi>,
21 Mark D. Studebaker <mdsxyz123@yahoo.com>,
22 Jean Delvare <khali@linux-fr.org>
28 Forcibly enable the SMBus controller. DANGEROUS!
30 Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS!
35 i2c-viapro is a true SMBus host driver for motherboards with one of the
36 supported VIA south bridges.
38 Your lspci -n listing must show one of these :
40 device 1106:3050 (VT82C596A function 3)
41 device 1106:3051 (VT82C596B function 3)
42 device 1106:3057 (VT82C686 function 4)
43 device 1106:3074 (VT8233)
44 device 1106:3147 (VT8233A)
45 device 1106:8235 (VT8231 function 4)
46 device 1106:3177 (VT8235)
47 device 1106:3227 (VT8237R)
48 device 1106:3337 (VT8237A)
49 device 1106:3287 (VT8251)
50 device 1106:8324 (CX700)
52 If none of these show up, you should look in the BIOS for settings like
53 enable ACPI / SMBus or even USB.
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.
59 The CX700 additionally appears to support SMBus PEC, although this driver
60 doesn't implement it yet.