From 55e71edb81b2b45273e7b284cce13ff24bde846f Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 21 Aug 2013 17:28:23 +0300 Subject: 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 Acked-by: Rafael J. Wysocki Signed-off-by: Wolfram Sang --- Documentation/acpi/enumeration.txt | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'Documentation/acpi') 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: -- cgit v1.2.3