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Kernel driver i2c-viapro
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Supported adapters:
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* VIA Technologies, Inc. VT82C596A/B
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Datasheet: Sometimes available at the VIA website
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* VIA Technologies, Inc. VT82C686A/B
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Datasheet: Sometimes available at the VIA website
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* VIA Technologies, Inc. VT8231, VT8233, VT8233A
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Datasheet: available on request from VIA
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* VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251
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Datasheet: available on request and under NDA from VIA
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* VIA Technologies, Inc. CX700
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Datasheet: available on request and under NDA from VIA
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* VIA Technologies, Inc. VX800/VX820
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Datasheet: available on http://linux.via.com.tw
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* VIA Technologies, Inc. VX855/VX875
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Datasheet: available on http://linux.via.com.tw
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* VIA Technologies, Inc. VX900
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Datasheet: available on http://linux.via.com.tw
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Authors:
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- Kyösti Mälkki <kmalkki@cc.hut.fi>,
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- Mark D. Studebaker <mdsxyz123@yahoo.com>,
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- Jean Delvare <jdelvare@suse.de>
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Module Parameters
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-----------------
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* force: int
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Forcibly enable the SMBus controller. DANGEROUS!
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* force_addr: int
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Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS!
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Description
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-----------
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i2c-viapro is a true SMBus host driver for motherboards with one of the
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supported VIA south bridges.
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Your ``lspci -n`` listing must show one of these :
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================ ======================
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device 1106:3050 (VT82C596A function 3)
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device 1106:3051 (VT82C596B function 3)
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device 1106:3057 (VT82C686 function 4)
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device 1106:3074 (VT8233)
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device 1106:3147 (VT8233A)
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device 1106:8235 (VT8231 function 4)
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device 1106:3177 (VT8235)
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device 1106:3227 (VT8237R)
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device 1106:3337 (VT8237A)
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device 1106:3372 (VT8237S)
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device 1106:3287 (VT8251)
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device 1106:8324 (CX700)
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device 1106:8353 (VX800/VX820)
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device 1106:8409 (VX855/VX875)
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device 1106:8410 (VX900)
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================ ======================
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If none of these show up, you should look in the BIOS for settings like
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enable ACPI / SMBus or even USB.
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Except for the oldest chips (VT82C596A/B, VT82C686A and most probably
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VT8231), this driver supports I2C block transactions. Such transactions
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are mainly useful to read from and write to EEPROMs.
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The CX700/VX800/VX820 additionally appears to support SMBus PEC, although
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this driver doesn't implement it yet.
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