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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2013-08-21 17:28:23 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2013-08-23 10:22:29 +0200 |
| commit | 55e71edb81b2b45273e7b284cce13ff24bde846f (patch) | |
| tree | 6a9a473f7865779bf4a5cf3036711f0356ebae75 /Documentation/acpi | |
| parent | 687b81d083c082bc1e853032e3a2a54f8c251d27 (diff) | |
| download | linux-stable-55e71edb81b2b45273e7b284cce13ff24bde846f.tar.gz linux-stable-55e71edb81b2b45273e7b284cce13ff24bde846f.tar.bz2 linux-stable-55e71edb81b2b45273e7b284cce13ff24bde846f.zip | |
i2c: move ACPI helpers into the core
This follows what has already been done for the DeviceTree helpers. Move
the ACPI helpers from drivers/acpi/acpi_i2c.c to the I2C core and update
documentation accordingly.
This also solves a problem reported by Jerry Snitselaar that we can't build
the ACPI I2C helpers as a module.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/acpi')
| -rw-r--r-- | Documentation/acpi/enumeration.txt | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/Documentation/acpi/enumeration.txt b/Documentation/acpi/enumeration.txt index 958266efcc20..d977778b5e67 100644 --- a/Documentation/acpi/enumeration.txt +++ b/Documentation/acpi/enumeration.txt @@ -228,18 +228,9 @@ ACPI handle like: I2C serial bus support ~~~~~~~~~~~~~~~~~~~~~~ The slaves behind I2C bus controller only need to add the ACPI IDs like -with the platform and SPI drivers. However the I2C bus controller driver -needs to call acpi_i2c_register_devices() after it has added the adapter. - -An I2C bus (controller) driver does: - - ... - ret = i2c_add_numbered_adapter(adapter); - if (ret) - /* handle error */ - - /* Enumerate the slave devices behind this bus via ACPI */ - acpi_i2c_register_devices(adapter); +with the platform and SPI drivers. The I2C core automatically enumerates +any slave devices behind the controller device once the adapter is +registered. Below is an example of how to add ACPI support to the existing mpu3050 input driver: |