Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | Kernel driver i2c-i810 |
2 | ||
3 | Supported adapters: | |
4 | * Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH) | |
142078f6 | 5 | * Intel 82845G (GMCH) |
1da177e4 LT |
6 | |
7 | Authors: | |
8 | Frodo Looijaard <frodol@dds.nl>, | |
9 | Philip Edelbrock <phil@netroedge.com>, | |
be2a608b | 10 | Kyösti Mälkki <kmalkki@cc.hut.fi>, |
1da177e4 LT |
11 | Ralph Metzler <rjkm@thp.uni-koeln.de>, |
12 | Mark D. Studebaker <mdsxyz123@yahoo.com> | |
13 | ||
14 | Main contact: Mark Studebaker <mdsxyz123@yahoo.com> | |
15 | ||
16 | Description | |
17 | ----------- | |
18 | ||
19 | WARNING: If you have an '810' or '815' motherboard, your standard I2C | |
20 | temperature sensors are most likely on the 801's I2C bus. You want the | |
21 | i2c-i801 driver for those, not this driver. | |
22 | ||
23 | Now for the i2c-i810... | |
24 | ||
25 | The GMCH chip contains two I2C interfaces. | |
26 | ||
27 | The first interface is used for DDC (Data Display Channel) which is a | |
28 | serial channel through the VGA monitor connector to a DDC-compliant | |
29 | monitor. This interface is defined by the Video Electronics Standards | |
30 | Association (VESA). The standards are available for purchase at | |
31 | http://www.vesa.org . | |
32 | ||
33 | The second interface is a general-purpose I2C bus. It may be connected to a | |
34 | TV-out chip such as the BT869 or possibly to a digital flat-panel display. | |
35 | ||
36 | Features | |
37 | -------- | |
38 | ||
39 | Both busses use the i2c-algo-bit driver for 'bit banging' | |
40 | and support for specific transactions is provided by i2c-algo-bit. | |
41 | ||
42 | Issues | |
43 | ------ | |
44 | ||
45 | If you enable bus testing in i2c-algo-bit (insmod i2c-algo-bit bit_test=1), | |
46 | the test may fail; if so, the i2c-i810 driver won't be inserted. However, | |
47 | we think this has been fixed. |