| Kernel driver i2c-i810 |
| |
| Supported adapters: |
| * Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH) |
| * Intel 82845G (GMCH) |
| |
| Authors: |
| Frodo Looijaard <frodol@dds.nl>, |
| Philip Edelbrock <phil@netroedge.com>, |
| Kyösti Mälkki <kmalkki@cc.hut.fi>, |
| Ralph Metzler <rjkm@thp.uni-koeln.de>, |
| Mark D. Studebaker <mdsxyz123@yahoo.com> |
| |
| Main contact: Mark Studebaker <mdsxyz123@yahoo.com> |
| |
| Description |
| ----------- |
| |
| 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 |
| http://www.vesa.org . |
| |
| 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. |
| |
| Features |
| -------- |
| |
| Both busses use the i2c-algo-bit driver for 'bit banging' |
| and support for specific transactions is provided by i2c-algo-bit. |
| |
| Issues |
| ------ |
| |
| 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. |
