| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | Kernel driver i2c-ali1535 |
| 2 | |
| 3 | Supported adapters: |
| 4 | * Acer Labs, Inc. ALI 1535 (south bridge) |
| 5 | Datasheet: Now under NDA |
| 6 | http://www.ali.com.tw/eng/support/datasheet_request.php |
| 7 | |
| 8 | Authors: |
| 9 | Frodo Looijaard <frodol@dds.nl>, |
| 10 | Philip Edelbrock <phil@netroedge.com>, |
| 11 | Mark D. Studebaker <mdsxyz123@yahoo.com>, |
| 12 | Dan Eaton <dan.eaton@rocketlogix.com>, |
| 13 | Stephen Rousset<stephen.rousset@rocketlogix.com> |
| 14 | |
| 15 | Description |
| 16 | ----------- |
| 17 | |
| 18 | This is the driver for the SMB Host controller on Acer Labs Inc. (ALI) |
| 19 | M1535 South Bridge. |
| 20 | |
| 21 | The M1535 is a South bridge for portable systems. It is very similar to the |
| 22 | M15x3 South bridges also produced by Acer Labs Inc. Some of the registers |
| 23 | within the part have moved and some have been redefined slightly. |
| 24 | Additionally, the sequencing of the SMBus transactions has been modified to |
| 25 | be more consistent with the sequencing recommended by the manufacturer and |
| 26 | observed through testing. These changes are reflected in this driver and |
| 27 | can be identified by comparing this driver to the i2c-ali15x3 driver. For |
| 28 | an overview of these chips see http://www.acerlabs.com |
| 29 | |
| 30 | The SMB controller is part of the M7101 device, which is an ACPI-compliant |
| 31 | Power Management Unit (PMU). |
| 32 | |
| 33 | The whole M7101 device has to be enabled for the SMB to work. You can't |
| 34 | just enable the SMB alone. The SMB and the ACPI have separate I/O spaces. |
| 35 | We make sure that the SMB is enabled. We leave the ACPI alone. |
| 36 | |
| 37 | |
| 38 | Features |
| 39 | -------- |
| 40 | |
| 41 | This driver controls the SMB Host only. This driver does not use |
| 42 | interrupts. |