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