162306a36Sopenharmony_ci======================== 262306a36Sopenharmony_ciKernel driver i2c-viapro 362306a36Sopenharmony_ci======================== 462306a36Sopenharmony_ci 562306a36Sopenharmony_ciSupported adapters: 662306a36Sopenharmony_ci * VIA Technologies, Inc. VT82C596A/B 762306a36Sopenharmony_ci Datasheet: Sometimes available at the VIA website 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci * VIA Technologies, Inc. VT82C686A/B 1062306a36Sopenharmony_ci Datasheet: Sometimes available at the VIA website 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci * VIA Technologies, Inc. VT8231, VT8233, VT8233A 1362306a36Sopenharmony_ci Datasheet: available on request from VIA 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251 1662306a36Sopenharmony_ci Datasheet: available on request and under NDA from VIA 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci * VIA Technologies, Inc. CX700 1962306a36Sopenharmony_ci Datasheet: available on request and under NDA from VIA 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci * VIA Technologies, Inc. VX800/VX820 2262306a36Sopenharmony_ci Datasheet: available on http://linux.via.com.tw 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci * VIA Technologies, Inc. VX855/VX875 2562306a36Sopenharmony_ci Datasheet: available on http://linux.via.com.tw 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci * VIA Technologies, Inc. VX900 2862306a36Sopenharmony_ci Datasheet: available on http://linux.via.com.tw 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ciAuthors: 3162306a36Sopenharmony_ci - Kyösti Mälkki <kmalkki@cc.hut.fi>, 3262306a36Sopenharmony_ci - Mark D. Studebaker <mdsxyz123@yahoo.com>, 3362306a36Sopenharmony_ci - Jean Delvare <jdelvare@suse.de> 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ciModule Parameters 3662306a36Sopenharmony_ci----------------- 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci* force: int 3962306a36Sopenharmony_ci Forcibly enable the SMBus controller. DANGEROUS! 4062306a36Sopenharmony_ci* force_addr: int 4162306a36Sopenharmony_ci Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS! 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ciDescription 4462306a36Sopenharmony_ci----------- 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_cii2c-viapro is a true SMBus host driver for motherboards with one of the 4762306a36Sopenharmony_cisupported VIA south bridges. 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ciYour ``lspci -n`` listing must show one of these : 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ci ================ ====================== 5262306a36Sopenharmony_ci device 1106:3050 (VT82C596A function 3) 5362306a36Sopenharmony_ci device 1106:3051 (VT82C596B function 3) 5462306a36Sopenharmony_ci device 1106:3057 (VT82C686 function 4) 5562306a36Sopenharmony_ci device 1106:3074 (VT8233) 5662306a36Sopenharmony_ci device 1106:3147 (VT8233A) 5762306a36Sopenharmony_ci device 1106:8235 (VT8231 function 4) 5862306a36Sopenharmony_ci device 1106:3177 (VT8235) 5962306a36Sopenharmony_ci device 1106:3227 (VT8237R) 6062306a36Sopenharmony_ci device 1106:3337 (VT8237A) 6162306a36Sopenharmony_ci device 1106:3372 (VT8237S) 6262306a36Sopenharmony_ci device 1106:3287 (VT8251) 6362306a36Sopenharmony_ci device 1106:8324 (CX700) 6462306a36Sopenharmony_ci device 1106:8353 (VX800/VX820) 6562306a36Sopenharmony_ci device 1106:8409 (VX855/VX875) 6662306a36Sopenharmony_ci device 1106:8410 (VX900) 6762306a36Sopenharmony_ci ================ ====================== 6862306a36Sopenharmony_ci 6962306a36Sopenharmony_ciIf none of these show up, you should look in the BIOS for settings like 7062306a36Sopenharmony_cienable ACPI / SMBus or even USB. 7162306a36Sopenharmony_ci 7262306a36Sopenharmony_ciExcept for the oldest chips (VT82C596A/B, VT82C686A and most probably 7362306a36Sopenharmony_ciVT8231), this driver supports I2C block transactions. Such transactions 7462306a36Sopenharmony_ciare mainly useful to read from and write to EEPROMs. 7562306a36Sopenharmony_ci 7662306a36Sopenharmony_ciThe CX700/VX800/VX820 additionally appears to support SMBus PEC, although 7762306a36Sopenharmony_cithis driver doesn't implement it yet. 78