| Mauro Carvalho Chehab | ccf988b | 2019-07-26 09:51:16 -0300 | [diff] [blame] | 1 | ========================= |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | Kernel driver i2c-ali1535 |
| Mauro Carvalho Chehab | ccf988b | 2019-07-26 09:51:16 -0300 | [diff] [blame] | 3 | ========================= |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | Supported adapters: |
| 6 | * Acer Labs, Inc. ALI 1535 (south bridge) |
| Mauro Carvalho Chehab | ccf988b | 2019-07-26 09:51:16 -0300 | [diff] [blame] | 7 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | Datasheet: Now under NDA |
| Justin P. Mattock | 0ea6e61 | 2010-07-23 20:51:24 -0700 | [diff] [blame] | 9 | http://www.ali.com.tw/ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
| 11 | Authors: |
| Mauro Carvalho Chehab | ccf988b | 2019-07-26 09:51:16 -0300 | [diff] [blame] | 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> |
| Andrea Gelmini | 89140f4 | 2010-06-03 11:33:50 +0200 | [diff] [blame] | 17 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |