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1Kernel driver i2c-i810
2
3Supported adapters:
4 * Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH)
5 * Intel 82845G (GMCH)
6
7Authors:
8 Frodo Looijaard <frodol@dds.nl>,
9 Philip Edelbrock <phil@netroedge.com>,
10 Kyösti Mälkki <kmalkki@cc.hut.fi>,
11 Ralph Metzler <rjkm@thp.uni-koeln.de>,
12 Mark D. Studebaker <mdsxyz123@yahoo.com>
13
14Main contact: Mark Studebaker <mdsxyz123@yahoo.com>
15
16Description
17-----------
18
19WARNING: If you have an '810' or '815' motherboard, your standard I2C
20temperature sensors are most likely on the 801's I2C bus. You want the
21i2c-i801 driver for those, not this driver.
22
23Now for the i2c-i810...
24
25The GMCH chip contains two I2C interfaces.
26
27The first interface is used for DDC (Data Display Channel) which is a
28serial channel through the VGA monitor connector to a DDC-compliant
29monitor. This interface is defined by the Video Electronics Standards
30Association (VESA). The standards are available for purchase at
31http://www.vesa.org .
32
33The second interface is a general-purpose I2C bus. It may be connected to a
34TV-out chip such as the BT869 or possibly to a digital flat-panel display.
35
36Features
37--------
38
39Both busses use the i2c-algo-bit driver for 'bit banging'
40and support for specific transactions is provided by i2c-algo-bit.
41
42Issues
43------
44
45If you enable bus testing in i2c-algo-bit (insmod i2c-algo-bit bit_test=1),
46the test may fail; if so, the i2c-i810 driver won't be inserted. However,
47we think this has been fixed.