diff options
Diffstat (limited to 'Documentation/acpi/enumeration.txt')
-rw-r--r-- | Documentation/acpi/enumeration.txt | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/Documentation/acpi/enumeration.txt b/Documentation/acpi/enumeration.txt index 2a1519b87177..e182be5e3c83 100644 --- a/Documentation/acpi/enumeration.txt +++ b/Documentation/acpi/enumeration.txt | |||
@@ -60,12 +60,6 @@ If the driver needs to perform more complex initialization like getting and | |||
60 | configuring GPIOs it can get its ACPI handle and extract this information | 60 | configuring GPIOs it can get its ACPI handle and extract this information |
61 | from ACPI tables. | 61 | from ACPI tables. |
62 | 62 | ||
63 | Currently the kernel is not able to automatically determine from which ACPI | ||
64 | device it should make the corresponding platform device so we need to add | ||
65 | the ACPI device explicitly to acpi_platform_device_ids list defined in | ||
66 | drivers/acpi/acpi_platform.c. This limitation is only for the platform | ||
67 | devices, SPI and I2C devices are created automatically as described below. | ||
68 | |||
69 | DMA support | 63 | DMA support |
70 | ~~~~~~~~~~~ | 64 | ~~~~~~~~~~~ |
71 | DMA controllers enumerated via ACPI should be registered in the system to | 65 | DMA controllers enumerated via ACPI should be registered in the system to |
@@ -296,7 +290,7 @@ specifies the path to the controller. In order to use these GPIOs in Linux | |||
296 | we need to translate them to the corresponding Linux GPIO descriptors. | 290 | we need to translate them to the corresponding Linux GPIO descriptors. |
297 | 291 | ||
298 | There is a standard GPIO API for that and is documented in | 292 | There is a standard GPIO API for that and is documented in |
299 | Documentation/gpio.txt. | 293 | Documentation/gpio/. |
300 | 294 | ||
301 | In the above example we can get the corresponding two GPIO descriptors with | 295 | In the above example we can get the corresponding two GPIO descriptors with |
302 | a code like this: | 296 | a code like this: |