i2c-i810 1.4 KB

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