1*4882a593Smuzhiyun========================= 2*4882a593SmuzhiyunKernel driver i2c-ali1535 3*4882a593Smuzhiyun========================= 4*4882a593Smuzhiyun 5*4882a593SmuzhiyunSupported adapters: 6*4882a593Smuzhiyun * Acer Labs, Inc. ALI 1535 (south bridge) 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun Datasheet: Now under NDA 9*4882a593Smuzhiyun http://www.ali.com.tw/ 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunAuthors: 12*4882a593Smuzhiyun - Frodo Looijaard <frodol@dds.nl>, 13*4882a593Smuzhiyun - Philip Edelbrock <phil@netroedge.com>, 14*4882a593Smuzhiyun - Mark D. Studebaker <mdsxyz123@yahoo.com>, 15*4882a593Smuzhiyun - Dan Eaton <dan.eaton@rocketlogix.com>, 16*4882a593Smuzhiyun - Stephen Rousset<stephen.rousset@rocketlogix.com> 17*4882a593Smuzhiyun 18*4882a593SmuzhiyunDescription 19*4882a593Smuzhiyun----------- 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunThis is the driver for the SMB Host controller on Acer Labs Inc. (ALI) 22*4882a593SmuzhiyunM1535 South Bridge. 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunThe M1535 is a South bridge for portable systems. It is very similar to the 25*4882a593SmuzhiyunM15x3 South bridges also produced by Acer Labs Inc. Some of the registers 26*4882a593Smuzhiyunwithin the part have moved and some have been redefined slightly. 27*4882a593SmuzhiyunAdditionally, the sequencing of the SMBus transactions has been modified to 28*4882a593Smuzhiyunbe more consistent with the sequencing recommended by the manufacturer and 29*4882a593Smuzhiyunobserved through testing. These changes are reflected in this driver and 30*4882a593Smuzhiyuncan be identified by comparing this driver to the i2c-ali15x3 driver. For 31*4882a593Smuzhiyunan overview of these chips see http://www.acerlabs.com 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunThe SMB controller is part of the M7101 device, which is an ACPI-compliant 34*4882a593SmuzhiyunPower Management Unit (PMU). 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunThe whole M7101 device has to be enabled for the SMB to work. You can't 37*4882a593Smuzhiyunjust enable the SMB alone. The SMB and the ACPI have separate I/O spaces. 38*4882a593SmuzhiyunWe make sure that the SMB is enabled. We leave the ACPI alone. 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun 41*4882a593SmuzhiyunFeatures 42*4882a593Smuzhiyun-------- 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunThis driver controls the SMB Host only. This driver does not use 45*4882a593Smuzhiyuninterrupts. 46