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