drivers: gpio: cc23x0: Add power management to GPIO

Add PM support to cc23x0 GPIO driver.

Signed-off-by: Stoyan Bogdanov <sbogdanov@baylibre.com>

Author: bogdanovs

drivers/gpio/gpio_cc23x0.c

@@ -12,6 +12,7 @@
 #include <zephyr/irq.h>
 #include <zephyr/drivers/gpio.h>
 #include <zephyr/drivers/gpio/gpio_utils.h>
+#include <zephyr/pm/device.h>
 
 #include <driverlib/clkctl.h>
 #include <driverlib/gpio.h>
@@ -49,6 +50,10 @@ static int gpio_cc23x0_config(const struct device *port, gpio_pin_t pin, gpio_fl
 		config |= IOC_IOC0_PULLCTL_PULL_DIS;
 	}
 
+	if (flags & GPIO_INT_WAKEUP) {
+		config |= IOC_IOC0_WUENSB;
+	}
+
 	if (!(flags & GPIO_SINGLE_ENDED)) {
 		config |= IOC_IOC0_IOMODE_NORMAL;
 	} else {
@@ -242,6 +247,24 @@ static void gpio_cc23x0_isr(const struct device *dev)
 	gpio_fire_callbacks(&data->callbacks, dev, status);
 }
 
+#ifdef CONFIG_PM_DEVICE
+static int gpio_cc23x0_pm_action(const struct device *dev, enum pm_device_action action)
+{
+	switch (action) {
+	case PM_DEVICE_ACTION_RESUME:
+		CLKCTLEnable(CLKCTL_BASE, CLKCTL_GPIO);
+		break;
+	case PM_DEVICE_ACTION_SUSPEND:
+		CLKCTLDisable(CLKCTL_BASE, CLKCTL_GPIO);
+		break;
+	default:
+		return -ENOTSUP;
+	}
+
+	return 0;
+}
+#endif /* CONFIG_PM_DEVICE */
+
 static int gpio_cc23x0_init(const struct device *dev)
 {
 	/* Enable GPIO domain clock */
@@ -277,5 +300,8 @@ static const struct gpio_cc23x0_config gpio_cc23x0_config_0 = {
 
 static struct gpio_cc23x0_data gpio_cc23x0_data_0;
 
-DEVICE_DT_INST_DEFINE(0, gpio_cc23x0_init, NULL, &gpio_cc23x0_data_0, &gpio_cc23x0_config_0,
-		      PRE_KERNEL_1, CONFIG_GPIO_INIT_PRIORITY, &gpio_cc23x0_driver_api);
+PM_DEVICE_DT_DEFINE(0, gpio_cc23x0_pm_action);
+
+DEVICE_DT_INST_DEFINE(0, gpio_cc23x0_init, PM_DEVICE_DT_GET(0), &gpio_cc23x0_data_0,
+		      &gpio_cc23x0_config_0, PRE_KERNEL_1,
+		      CONFIG_GPIO_INIT_PRIORITY, &gpio_cc23x0_driver_api);