drivers: gpio: Add support for Apollo510 GPIO

This commit adds support for Apollo510 SoC in ambiq gpio driver

Signed-off-by: Hao Luo <hluo@ambiq.com>

Author: AlessandroLuo

drivers/gpio/gpio_ambiq.c

@@ -13,6 +13,7 @@
 #include <zephyr/drivers/gpio/gpio_utils.h>
 #include <zephyr/irq.h>
 #include <zephyr/spinlock.h>
+#include <zephyr/drivers/gpio/gpio_ambiq.h>
 
 #include <soc.h>
 
@@ -488,7 +489,12 @@ static int ambiq_gpio_pin_interrupt_configure(const struct device *dev, gpio_pin
 			 * GPIO_INT_TRIG_BOTH is not supported on Ambiq Apollo4 Plus Platform
 			 * ERR008: GPIO: Dual-edge interrupts are not vectoring
 			 */
+#if defined(CONFIG_SOC_SERIES_APOLLO4X)
 			return -ENOTSUP;
+#elif defined(CONFIG_SOC_SERIES_APOLLO5X)
+			pincfg.GP.cfg_b.eIntDir = AM_HAL_GPIO_PIN_INTDIR_BOTH;
+			break;
+#endif
 		default:
 			return -EINVAL;
 		}
@@ -567,6 +573,18 @@ static DEVICE_API(gpio, ambiq_gpio_drv_api) = {
 #endif
 };
 
+gpio_pin_t ambiq_gpio_get_pinnum(const struct device *dev, gpio_pin_t pin)
+{
+	const struct ambiq_gpio_config *const dev_cfg = dev->config;
+
+#if defined(CONFIG_SOC_SERIES_APOLLO3X)
+	pin += dev_cfg->offset;
+#else
+	pin += (dev_cfg->offset >> 2);
+#endif
+	return pin;
+}
+
 #if defined(CONFIG_SOC_SERIES_APOLLO3X)
 /* Apollo3 GPIO banks share the same irq number, connect irq here will cause build error, so we
  * leave this function blank here and do it in ambiq_gpio_cfg_func

include/zephyr/drivers/gpio/gpio_ambiq.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2025 Ambiq Micro Inc. <www.ambiq.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_DRIVERS_GPIO_GPIO_AMBIQ_H_
+#define ZEPHYR_DRIVERS_GPIO_GPIO_AMBIQ_H_
+
+#include <zephyr/device.h>
+#include <zephyr/drivers/gpio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Get the actual gpio pin number.
+ *
+ * @param dev Pointer to the device structure for the driver instance.
+ * @param pin Pin number of the select gpio group.
+ *
+ * @retval pin number.
+ */
+gpio_pin_t ambiq_gpio_get_pinnum(const struct device *dev, gpio_pin_t pin);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZEPHYR_DRIVERS_GPIO_GPIO_AMBIQ_H_ */