diff options
Diffstat (limited to 'src/include/gpio.h')
-rw-r--r-- | src/include/gpio.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/include/gpio.h b/src/include/gpio.h index 3f462df295..69a0828f58 100644 --- a/src/include/gpio.h +++ b/src/include/gpio.h @@ -41,6 +41,16 @@ int _gpio_base3_value(gpio_t gpio[], int num_gpio, int binary_first); const char *gpio_acpi_path(gpio_t gpio); /* + * This function may be implemented by SoC/board code to provide + * a mapping from the internal representation of a GPIO to the 16bit + * value used in an ACPI GPIO pin table entry. + * + * If not implemented by the SOC the default handler will return 0 + * because the underlying type of gpio_t is unknown. + */ +uint16_t gpio_acpi_pin(gpio_t gpio); + +/* * Read the value presented by the set of GPIOs, when each pin is interpreted * as a base-2 digit (LOW = 0, HIGH = 1). * |