Commit | Line | Data |
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ccf988b6 | 1 | ========================= |
1da177e4 | 2 | Kernel driver i2c-ali1535 |
ccf988b6 | 3 | ========================= |
1da177e4 LT |
4 | |
5 | Supported adapters: | |
6 | * Acer Labs, Inc. ALI 1535 (south bridge) | |
ccf988b6 | 7 | |
1da177e4 | 8 | Datasheet: Now under NDA |
0ea6e611 | 9 | http://www.ali.com.tw/ |
1da177e4 LT |
10 | |
11 | Authors: | |
ccf988b6 MCC |
12 | - Frodo Looijaard <frodol@dds.nl>, |
13 | - Philip Edelbrock <phil@netroedge.com>, | |
14 | - Mark D. Studebaker <mdsxyz123@yahoo.com>, | |
15 | - Dan Eaton <dan.eaton@rocketlogix.com>, | |
16 | - Stephen Rousset<stephen.rousset@rocketlogix.com> | |
89140f41 | 17 | |
1da177e4 LT |
18 | Description |
19 | ----------- | |
20 | ||
21 | This is the driver for the SMB Host controller on Acer Labs Inc. (ALI) | |
22 | M1535 South Bridge. | |
23 | ||
24 | The M1535 is a South bridge for portable systems. It is very similar to the | |
25 | M15x3 South bridges also produced by Acer Labs Inc. Some of the registers | |
26 | within the part have moved and some have been redefined slightly. | |
27 | Additionally, the sequencing of the SMBus transactions has been modified to | |
28 | be more consistent with the sequencing recommended by the manufacturer and | |
29 | observed through testing. These changes are reflected in this driver and | |
30 | can be identified by comparing this driver to the i2c-ali15x3 driver. For | |
31 | an overview of these chips see http://www.acerlabs.com | |
32 | ||
33 | The SMB controller is part of the M7101 device, which is an ACPI-compliant | |
34 | Power Management Unit (PMU). | |
35 | ||
36 | The whole M7101 device has to be enabled for the SMB to work. You can't | |
37 | just enable the SMB alone. The SMB and the ACPI have separate I/O spaces. | |
38 | We make sure that the SMB is enabled. We leave the ACPI alone. | |
39 | ||
40 | ||
41 | Features | |
42 | -------- | |
43 | ||
44 | This driver controls the SMB Host only. This driver does not use | |
45 | interrupts. |