drivers: gpio: Add PM Action for MCUX LPC driver

Add PM action for MCUX LPC driver

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

drivers/gpio/gpio_mcux_lpc.c

@@ -17,6 +17,7 @@
 #include <errno.h>
 #include <zephyr/device.h>
 #include <zephyr/drivers/gpio.h>
+#include <zephyr/pm/device.h>
 #include <zephyr/irq.h>
 #include <soc.h>
 #include <fsl_common.h>
@@ -406,14 +407,34 @@ static int gpio_mcux_lpc_manage_cb(const struct device *port,
 	return gpio_manage_callback(&data->callbacks, callback, set);
 }
 
-static int gpio_mcux_lpc_init(const struct device *dev)
+static int gpio_mcux_lpc_pm_action(const struct device *dev, enum pm_device_action action)
 {
-	const struct gpio_mcux_lpc_config *config = dev->config;
-	GPIO_PortInit(config->gpio_base, config->port_no);
+	switch (action) {
+	case PM_DEVICE_ACTION_RESUME:
+		break;
+	case PM_DEVICE_ACTION_SUSPEND:
+		break;
+	case PM_DEVICE_ACTION_TURN_OFF:
+		break;
+	case PM_DEVICE_ACTION_TURN_ON:
+		const struct gpio_mcux_lpc_config *config = dev->config;
 
+		GPIO_PortInit(config->gpio_base, config->port_no);
+		break;
+	default:
+		return -ENOTSUP;
+	}
 	return 0;
 }
 
+static int gpio_mcux_lpc_init(const struct device *dev)
+{
+	/* Rest of the init is done from the PM_DEVICE_TURN_ON action
+	 * which is invoked by pm_device_driver_init().
+	 */
+	return pm_device_driver_init(dev, gpio_mcux_lpc_pm_action);
+}
+
 static DEVICE_API(gpio, gpio_mcux_lpc_driver_api) = {
 	.pin_configure = gpio_mcux_lpc_configure,
 	.port_get_raw = gpio_mcux_lpc_port_get_raw,
@@ -465,7 +486,10 @@ static DEVICE_API(gpio, gpio_mcux_lpc_driver_api) = {
 											\
 	static struct gpio_mcux_lpc_data gpio_mcux_lpc_data_##n;			\
 											\
-	DEVICE_DT_INST_DEFINE(n, lpc_gpio_init_##n, NULL,				\
+	PM_DEVICE_DT_INST_DEFINE(n, gpio_mcux_lpc_pm_action);				\
+											\
+	DEVICE_DT_INST_DEFINE(n, lpc_gpio_init_##n,					\
+		    PM_DEVICE_DT_INST_GET(n),						\
 		    &gpio_mcux_lpc_data_##n,						\
 		    &gpio_mcux_lpc_config_##n, PRE_KERNEL_1,				\
 		    CONFIG_GPIO_INIT_PRIORITY,						\