162306a36Sopenharmony_ci=========================
262306a36Sopenharmony_ciKernel driver i2c-ali1535
362306a36Sopenharmony_ci=========================
462306a36Sopenharmony_ci
562306a36Sopenharmony_ciSupported adapters:
662306a36Sopenharmony_ci  * Acer Labs, Inc. ALI 1535 (south bridge)
762306a36Sopenharmony_ci
862306a36Sopenharmony_ci    Datasheet: Now under NDA
962306a36Sopenharmony_ci	http://www.ali.com.tw/
1062306a36Sopenharmony_ci
1162306a36Sopenharmony_ciAuthors:
1262306a36Sopenharmony_ci	- Frodo Looijaard <frodol@dds.nl>,
1362306a36Sopenharmony_ci	- Philip Edelbrock <phil@netroedge.com>,
1462306a36Sopenharmony_ci	- Mark D. Studebaker <mdsxyz123@yahoo.com>,
1562306a36Sopenharmony_ci	- Dan Eaton <dan.eaton@rocketlogix.com>,
1662306a36Sopenharmony_ci	- Stephen Rousset<stephen.rousset@rocketlogix.com>
1762306a36Sopenharmony_ci
1862306a36Sopenharmony_ciDescription
1962306a36Sopenharmony_ci-----------
2062306a36Sopenharmony_ci
2162306a36Sopenharmony_ciThis is the driver for the SMB Host controller on Acer Labs Inc. (ALI)
2262306a36Sopenharmony_ciM1535 South Bridge.
2362306a36Sopenharmony_ci
2462306a36Sopenharmony_ciThe M1535 is a South bridge for portable systems. It is very similar to the
2562306a36Sopenharmony_ciM15x3 South bridges also produced by Acer Labs Inc.  Some of the registers
2662306a36Sopenharmony_ciwithin the part have moved and some have been redefined slightly.
2762306a36Sopenharmony_ciAdditionally, the sequencing of the SMBus transactions has been modified to
2862306a36Sopenharmony_cibe more consistent with the sequencing recommended by the manufacturer and
2962306a36Sopenharmony_ciobserved through testing.  These changes are reflected in this driver and
3062306a36Sopenharmony_cican be identified by comparing this driver to the i2c-ali15x3 driver. For
3162306a36Sopenharmony_cian overview of these chips see http://www.acerlabs.com
3262306a36Sopenharmony_ci
3362306a36Sopenharmony_ciThe SMB controller is part of the M7101 device, which is an ACPI-compliant
3462306a36Sopenharmony_ciPower Management Unit (PMU).
3562306a36Sopenharmony_ci
3662306a36Sopenharmony_ciThe whole M7101 device has to be enabled for the SMB to work. You can't
3762306a36Sopenharmony_cijust enable the SMB alone. The SMB and the ACPI have separate I/O spaces.
3862306a36Sopenharmony_ciWe make sure that the SMB is enabled. We leave the ACPI alone.
3962306a36Sopenharmony_ci
4062306a36Sopenharmony_ci
4162306a36Sopenharmony_ciFeatures
4262306a36Sopenharmony_ci--------
4362306a36Sopenharmony_ci
4462306a36Sopenharmony_ciThis driver controls the SMB Host only. This driver does not use
4562306a36Sopenharmony_ciinterrupts.
46