@@ -12,6 +12,7 @@
#include <pch.h>
#include <pci.h>
#include <syscon.h>
+#include <acpi/acpi_device.h>
#include <asm/cpu.h>
#include <asm/gpio.h>
#include <asm/intel_pinctrl.h>
@@ -19,6 +20,7 @@
#include <asm/io.h>
#include <asm/pci.h>
#include <asm/arch/gpio.h>
+#include <dm/acpi.h>
#include <dt-bindings/gpio/x86-gpio.h>
static int intel_gpio_direction_input(struct udevice *dev, uint offset)
@@ -128,6 +130,35 @@ static int intel_gpio_xlate(struct udevice *orig_dev, struct gpio_desc *desc,
return 0;
}
+#if CONFIG_IS_ENABLED(ACPIGEN)
+static int intel_gpio_get_acpi(const struct gpio_desc *desc,
+ struct acpi_gpio *gpio)
+{
+ struct udevice *pinctrl;
+ int ret;
+
+ if (!dm_gpio_is_valid(desc))
+ return -ENOENT;
+ pinctrl = dev_get_parent(desc->dev);
+
+ memset(gpio, '\0', sizeof(*gpio));
+
+ gpio->type = ACPI_GPIO_TYPE_IO;
+ gpio->pull = ACPI_GPIO_PULL_DEFAULT;
+ gpio->io_restrict = ACPI_GPIO_IO_RESTRICT_OUTPUT;
+ gpio->polarity = ACPI_GPIO_ACTIVE_HIGH;
+ gpio->pin_count = 1;
+ gpio->pins[0] = intel_pinctrl_get_acpi_pin(pinctrl, desc->offset);
+ gpio->pin0_addr = intel_pinctrl_get_config_reg_addr(pinctrl,
+ desc->offset);
+ ret = acpi_get_path(pinctrl, gpio->resource, sizeof(gpio->resource));
+ if (ret)
+ return log_msg_ret("resource", ret);
+
+ return 0;
+}
+#endif
+
static int intel_gpio_probe(struct udevice *dev)
{
return 0;
@@ -152,6 +183,9 @@ static const struct dm_gpio_ops gpio_intel_ops = {
.set_value = intel_gpio_set_value,
.get_function = intel_gpio_get_function,
.xlate = intel_gpio_xlate,
+#if CONFIG_IS_ENABLED(ACPIGEN)
+ .get_acpi = intel_gpio_get_acpi,
+#endif
};
static const struct udevice_id intel_intel_gpio_ids[] = {
Implement the method that converts a GPIO into the form used by ACPI, so that GPIOs can be added to ACPI tables. Signed-off-by: Simon Glass <sjg at chromium.org> --- (no changes since v1) Changes in v1: - Use acpi_get_path() to get device path drivers/gpio/intel_gpio.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+)