blob: 83c3b9743c3c9cf01702760452dad4fade20ff61 [file] [log] [blame]
Kernel driver i2c-i810
Supported adapters:
* Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH)
* Intel 82845G (GMCH)
Frodo Looijaard <>,
Philip Edelbrock <>,
Kyösti Mälkki <>,
Ralph Metzler <>,
Mark D. Studebaker <>
Main contact: Mark Studebaker <>
WARNING: If you have an '810' or '815' motherboard, your standard I2C
temperature sensors are most likely on the 801's I2C bus. You want the
i2c-i801 driver for those, not this driver.
Now for the i2c-i810...
The GMCH chip contains two I2C interfaces.
The first interface is used for DDC (Data Display Channel) which is a
serial channel through the VGA monitor connector to a DDC-compliant
monitor. This interface is defined by the Video Electronics Standards
Association (VESA). The standards are available for purchase at .
The second interface is a general-purpose I2C bus. It may be connected to a
TV-out chip such as the BT869 or possibly to a digital flat-panel display.
Both busses use the i2c-algo-bit driver for 'bit banging'
and support for specific transactions is provided by i2c-algo-bit.
If you enable bus testing in i2c-algo-bit (insmod i2c-algo-bit bit_test=1),
the test may fail; if so, the i2c-i810 driver won't be inserted. However,
we think this has been fixed.