2005-04-17 06:20:36 +08:00
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Kernel driver i2c-i810
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Supported adapters:
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* Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH)
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2005-10-27 03:21:50 +08:00
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* Intel 82845G (GMCH)
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2005-04-17 06:20:36 +08:00
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Authors:
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Frodo Looijaard <frodol@dds.nl>,
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Philip Edelbrock <phil@netroedge.com>,
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Ky<4B>sti M<>lkki <kmalkki@cc.hut.fi>,
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Ralph Metzler <rjkm@thp.uni-koeln.de>,
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Mark D. Studebaker <mdsxyz123@yahoo.com>
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Main contact: Mark Studebaker <mdsxyz123@yahoo.com>
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Description
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-----------
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WARNING: If you have an '810' or '815' motherboard, your standard I2C
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temperature sensors are most likely on the 801's I2C bus. You want the
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i2c-i801 driver for those, not this driver.
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Now for the i2c-i810...
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The GMCH chip contains two I2C interfaces.
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The first interface is used for DDC (Data Display Channel) which is a
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serial channel through the VGA monitor connector to a DDC-compliant
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monitor. This interface is defined by the Video Electronics Standards
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Association (VESA). The standards are available for purchase at
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http://www.vesa.org .
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The second interface is a general-purpose I2C bus. It may be connected to a
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TV-out chip such as the BT869 or possibly to a digital flat-panel display.
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Features
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--------
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Both busses use the i2c-algo-bit driver for 'bit banging'
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and support for specific transactions is provided by i2c-algo-bit.
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Issues
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------
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If you enable bus testing in i2c-algo-bit (insmod i2c-algo-bit bit_test=1),
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the test may fail; if so, the i2c-i810 driver won't be inserted. However,
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we think this has been fixed.
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