C++ (Cpp) acpi_device_write_gpio Examples

Example #1

File: acpi.c Project: lynxis/coreboot-signed

static int spi_acpi_write_gpio(struct acpi_gpio *gpio, int *curr_index)
{
	int ret = -1;

	if (gpio->pin_count == 0)
		return ret;

	acpi_device_write_gpio(gpio);
	ret = *curr_index;
	(*curr_index)++;

	return ret;
}

Example #2

File: gpio_regulator.c Project: canistation/coreboot

static void gpio_regulator_fill_ssdt_generator(struct device *dev)
{
	struct drivers_generic_gpio_regulator_config *config = dev->chip_info;
	const char *scope = acpi_device_scope(dev);
	const char *path = acpi_device_path(dev);
	struct acpi_dp *dsd;

	if (!dev->enabled || !scope || !path || !config->gpio.pin_count)
		return;

	/* Device */
	acpigen_write_scope(scope);
	acpigen_write_device(acpi_device_name(dev));

	/* _HID is set to PRP0001 */
	acpigen_write_name_string("_HID", ACPI_DT_NAMESPACE_HID);

	/* Resources - _CRS */
	acpigen_write_name("_CRS");
	acpigen_write_resourcetemplate_header();
	acpi_device_write_gpio(&config->gpio);
	acpigen_write_resourcetemplate_footer();

	/* DSD */
	dsd = acpi_dp_new_table("_DSD");
	acpi_dp_add_string(dsd, "compatible", "regulator-fixed");
	acpi_dp_add_string(dsd, "regulator-name", config->name);
	acpi_dp_add_gpio(dsd, "gpio-gpios", path, 0, 0, config->gpio.polarity);
	if (config->enabled_on_boot)
		acpi_dp_add_string(dsd, "regulator-boot-on", "on");
	if (config->gpio.polarity == ACPI_GPIO_ACTIVE_HIGH)
		acpi_dp_add_string(dsd, "enable-active-high", "on");
	acpi_dp_write(dsd);

	acpigen_pop_len(); /* Device */
	acpigen_pop_len(); /* Scope */
}