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