diff options
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_dp.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/acpi/acpi_dp.h b/include/acpi/acpi_dp.h index a82330856a..b89e0b8c49 100644 --- a/include/acpi/acpi_dp.h +++ b/include/acpi/acpi_dp.h @@ -11,6 +11,8 @@ struct acpi_ctx; +#include <acpi/acpi_device.h> + /* * Writing Device Properties objects via _DSD * @@ -204,6 +206,24 @@ struct acpi_dp *acpi_dp_add_child(struct acpi_dp *dp, const char *name, struct acpi_dp *child); /** + * acpi_dp_add_gpio() - Add a GPIO to a list of Device Properties + * + * A new node is added to the end of the property list of @dp, with the + * GPIO properties added to the the new node + * + * @dp: Table to add this property to + * @name: Name of property + * @ref: Reference to device with a _CRS containing GpioIO or GpioInt + * @index: Index of the GPIO resource in _CRS starting from zero + * @pin: Pin in the GPIO resource, typically zero + * @polarity: GPIO polarity. Note that ACPI_IRQ_ACTIVE_BOTH is not supported + * @return pointer to new node, or NULL if out of memory + */ +struct acpi_dp *acpi_dp_add_gpio(struct acpi_dp *dp, const char *name, + const char *ref, int index, int pin, + enum acpi_irq_polarity polarity); + +/** * acpi_dp_write() - Write Device Property hierarchy and clean up resources * * This writes the table using acpigen and then frees it |