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, VT8237S, 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
19 * VIA Technologies, Inc. VX800/VX820
20 Datasheet: available on http://linux.via.com.tw
22 * VIA Technologies, Inc. VX855/VX875
23 Datasheet: available on http://linux.via.com.tw
25 * VIA Technologies, Inc. VX900
26 Datasheet: available on http://linux.via.com.tw
29 Kyösti Mälkki <kmalkki@cc.hut.fi>,
30 Mark D. Studebaker <mdsxyz123@yahoo.com>,
31 Jean Delvare <jdelvare@suse.de>
37 Forcibly enable the SMBus controller. DANGEROUS!
39 Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS!
44 i2c-viapro is a true SMBus host driver for motherboards with one of the
45 supported VIA south bridges.
47 Your lspci -n listing must show one of these :
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)
65 If none of these show up, you should look in the BIOS for settings like
66 enable ACPI / SMBus or even USB.
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.
72 The CX700/VX800/VX820 additionally appears to support SMBus PEC, although
73 this driver doesn't implement it yet.