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81 lines
2.4 KiB
81 lines
2.4 KiB
20 years ago
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Kernel driver i2c-i801
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Supported adapters:
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* Intel 82801AA and 82801AB (ICH and ICH0 - part of the
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'810' and '810E' chipsets)
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* Intel 82801BA (ICH2 - part of the '815E' chipset)
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* Intel 82801CA/CAM (ICH3)
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* Intel 82801DB (ICH4) (HW PEC supported, 32 byte buffer not supported)
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* Intel 82801EB/ER (ICH5) (HW PEC supported, 32 byte buffer not supported)
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* Intel 6300ESB
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* Intel 82801FB/FR/FW/FRW (ICH6)
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* Intel ICH7
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Datasheets: Publicly available at the Intel website
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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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Mark Studebaker <mdsxyz123@yahoo.com>
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Module Parameters
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-----------------
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* force_addr: int
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Forcibly enable the ICH at the given address. EXTREMELY DANGEROUS!
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Description
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-----------
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The ICH (properly known as the 82801AA), ICH0 (82801AB), ICH2 (82801BA),
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ICH3 (82801CA/CAM) and later devices are Intel chips that are a part of
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Intel's '810' chipset for Celeron-based PCs, '810E' chipset for
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Pentium-based PCs, '815E' chipset, and others.
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The ICH chips contain at least SEVEN separate PCI functions in TWO logical
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PCI devices. An output of lspci will show something similar to the
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following:
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00:1e.0 PCI bridge: Intel Corporation: Unknown device 2418 (rev 01)
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00:1f.0 ISA bridge: Intel Corporation: Unknown device 2410 (rev 01)
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00:1f.1 IDE interface: Intel Corporation: Unknown device 2411 (rev 01)
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00:1f.2 USB Controller: Intel Corporation: Unknown device 2412 (rev 01)
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00:1f.3 Unknown class [0c05]: Intel Corporation: Unknown device 2413 (rev 01)
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The SMBus controller is function 3 in device 1f. Class 0c05 is SMBus Serial
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Controller.
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If you do NOT see the 24x3 device at function 3, and you can't figure out
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any way in the BIOS to enable it,
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The ICH chips are quite similar to Intel's PIIX4 chip, at least in the
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SMBus controller.
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See the file i2c-piix4 for some additional information.
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Process Call Support
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--------------------
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Not supported.
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I2C Block Read Support
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----------------------
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Not supported at the moment.
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SMBus 2.0 Support
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-----------------
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The 82801DB (ICH4) and later chips support several SMBus 2.0 features.
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**********************
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The lm_sensors project gratefully acknowledges the support of Texas
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Instruments in the initial development of this driver.
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The lm_sensors project gratefully acknowledges the support of Intel in the
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development of SMBus 2.0 / ICH4 features of this driver.
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