| 1 | Kernel driver `i2c-i801.o' |
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| 2 | |
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| 3 | Status: Beta. |
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| 4 | Block reads/writes untested (not used by any current chip driver). |
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| 5 | |
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| 6 | Supported adapters: |
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| 7 | * Intel 82801AA and 82801AB (ICH and ICH0 - part of the '810' chipset) |
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| 8 | Datasheet: Publicly available at the Intel website |
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| 9 | |
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| 10 | Author: Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock |
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| 11 | <phil@netroedge.com>, and Mark Studebaker <mds@eng.paradyne.com> |
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| 12 | |
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| 13 | |
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| 14 | Module Parameters |
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| 15 | ----------------- |
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| 16 | |
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| 17 | * force: int |
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| 18 | Forcibly enable the ICH. DANGEROUS! |
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| 19 | * force_addr: int |
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| 20 | Forcibly enable the ICH at the given address. EXTREMELY DANGEROUS! |
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| 21 | |
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| 22 | |
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| 23 | Description |
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| 24 | ----------- |
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| 25 | |
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| 26 | The ICH (properly known as the 82801AA) and ICH0 (82801AB) |
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| 27 | are Intel chips that are a part of Intel's '810' chipset |
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| 28 | which is designed for Celeron-based PCs. |
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| 29 | |
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| 30 | The ICH contains up to SEVEN separate PCI functions |
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| 31 | in TWO logical PCI devices. |
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| 32 | An output of lspci will show something similar to the following: |
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| 33 | |
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| 34 | 00:1e.0 PCI bridge: Intel Corporation: Unknown device 2418 (rev 01) |
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| 35 | 00:1f.0 ISA bridge: Intel Corporation: Unknown device 2410 (rev 01) |
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| 36 | 00:1f.1 IDE interface: Intel Corporation: Unknown device 2411 (rev 01) |
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| 37 | 00:1f.2 USB Controller: Intel Corporation: Unknown device 2412 (rev 01) |
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| 38 | 00:1f.3 Unknown class [0c05]: Intel Corporation: Unknown device 2413 (rev 01) |
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| 39 | |
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| 40 | The SMBus controller is function 3 in device 1f. |
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| 41 | Class 0c05 is SMBus Serial Controller. |
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| 42 | |
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| 43 | The ICH chips are quite similar to Intel's PIIX4 chip, |
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| 44 | at least in the SMBus controller. |
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| 45 | |
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| 46 | See the file i2c-piix4 for details. |
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| 47 | |
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| 48 | |
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| 49 | ********************** |
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| 50 | The lm_sensors project gratefully acknowledges the support of |
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| 51 | Texas Instruments in the development of this driver. |
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