1 files changed, 80 insertions, 0 deletions
diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801
new file mode 100644
index 0000000..fd4b271
--- /dev/null
+++ b/Documentation/i2c/busses/i2c-i801
@@ -0,0 +1,80 @@
+Kernel driver i2c-i801
+
+Supported adapters:
+  * Intel 82801AA and 82801AB (ICH and ICH0 - part of the
+    '810' and '810E' chipsets)
+  * Intel 82801BA (ICH2 - part of the '815E' chipset)
+  * Intel 82801CA/CAM (ICH3)
+  * Intel 82801DB (ICH4) (HW PEC supported, 32 byte buffer not supported)
+  * Intel 82801EB/ER (ICH5) (HW PEC supported, 32 byte buffer not supported)
+  * Intel 6300ESB
+  * Intel 82801FB/FR/FW/FRW (ICH6)
+  * Intel ICH7
+    Datasheets: Publicly available at the Intel website
+
+Authors: 
+	Frodo Looijaard <frodol@dds.nl>, 
+	Philip Edelbrock <phil@netroedge.com>, 
+	Mark Studebaker <mdsxyz123@yahoo.com>
+
+
+Module Parameters
+-----------------
+
+* force_addr: int
+  Forcibly enable the ICH at the given address. EXTREMELY DANGEROUS!
+
+
+Description
+-----------
+
+The ICH (properly known as the 82801AA), ICH0 (82801AB), ICH2 (82801BA),
+ICH3 (82801CA/CAM) and later devices are Intel chips that are a part of
+Intel's '810' chipset for Celeron-based PCs, '810E' chipset for
+Pentium-based PCs, '815E' chipset, and others.
+
+The ICH chips contain at least SEVEN separate PCI functions in TWO logical
+PCI devices. An output of lspci will show something similar to the
+following:
+
+  00:1e.0 PCI bridge: Intel Corporation: Unknown device 2418 (rev 01)
+  00:1f.0 ISA bridge: Intel Corporation: Unknown device 2410 (rev 01)
+  00:1f.1 IDE interface: Intel Corporation: Unknown device 2411 (rev 01)
+  00:1f.2 USB Controller: Intel Corporation: Unknown device 2412 (rev 01)
+  00:1f.3 Unknown class [0c05]: Intel Corporation: Unknown device 2413 (rev 01)
+
+The SMBus controller is function 3 in device 1f. Class 0c05 is SMBus Serial
+Controller.
+
+If you do NOT see the 24x3 device at function 3, and you can't figure out
+any way in the BIOS to enable it,
+
+The ICH chips are quite similar to Intel's PIIX4 chip, at least in the
+SMBus controller.
+
+See the file i2c-piix4 for some additional information.
+
+
+Process Call Support
+--------------------
+
+Not supported.
+
+
+I2C Block Read Support
+----------------------
+
+Not supported at the moment.
+
+
+SMBus 2.0 Support
+-----------------
+
+The 82801DB (ICH4) and later chips support several SMBus 2.0 features.
+
+**********************
+The lm_sensors project gratefully acknowledges the support of Texas
+Instruments in the initial development of this driver.
+
+The lm_sensors project gratefully acknowledges the support of Intel in the
+development of SMBus 2.0 / ICH4 features of this driver.