Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | Kernel driver i2c-ali1535 |
2 | ||
3 | Supported adapters: | |
4 | * Acer Labs, Inc. ALI 1535 (south bridge) | |
5 | Datasheet: Now under NDA | |
0ea6e611 | 6 | http://www.ali.com.tw/ |
1da177e4 LT |
7 | |
8 | Authors: | |
89140f41 | 9 | Frodo Looijaard <frodol@dds.nl>, |
1da177e4 LT |
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> | |
89140f41 | 14 | |
1da177e4 LT |
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. |