leds: pca955x: Get rid of custom led_init_default_state_get()

LED core provides a helper to parse default state from firmware node.
Use it instead of custom implementation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230103131256.33894-9-andriy.shevchenko@linux.intel.com

drivers/leds/leds-pca955x.c

@@ -130,7 +130,7 @@ struct pca955x_led {
 	struct led_classdev	led_cdev;
 	int			led_num;	/* 0 .. 15 potentially */
 	u32			type;
-	int			default_state;
+	enum led_default_state	default_state;
 	struct fwnode_handle	*fwnode;
 };
 
@@ -437,7 +437,6 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
 		return ERR_PTR(-ENOMEM);
 
 	device_for_each_child_node(&client->dev, child) {
-		const char *state;
 		u32 reg;
 		int res;
 
@@ -448,19 +447,9 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
 		led = &pdata->leds[reg];
 		led->type = PCA955X_TYPE_LED;
 		led->fwnode = child;
-		fwnode_property_read_u32(child, "type", &led->type);
+		led->default_state = led_init_default_state_get(child);
 
-		if (!fwnode_property_read_string(child, "default-state",
-						 &state)) {
-			if (!strcmp(state, "keep"))
-				led->default_state = LEDS_GPIO_DEFSTATE_KEEP;
-			else if (!strcmp(state, "on"))
-				led->default_state = LEDS_GPIO_DEFSTATE_ON;
-			else
-				led->default_state = LEDS_GPIO_DEFSTATE_OFF;
-		} else {
-			led->default_state = LEDS_GPIO_DEFSTATE_OFF;
-		}
+		fwnode_property_read_u32(child, "type", &led->type);
 	}
 
 	pdata->num_leds = chip->bits;
@@ -572,13 +561,11 @@ static int pca955x_probe(struct i2c_client *client)
 			led->brightness_set_blocking = pca955x_led_set;
 			led->brightness_get = pca955x_led_get;
 
-			if (pdata->leds[i].default_state ==
-			    LEDS_GPIO_DEFSTATE_OFF) {
+			if (pdata->leds[i].default_state == LEDS_DEFSTATE_OFF) {
 				err = pca955x_led_set(led, LED_OFF);
 				if (err)
 					return err;
-			} else if (pdata->leds[i].default_state ==
-				   LEDS_GPIO_DEFSTATE_ON) {
+			} else if (pdata->leds[i].default_state == LEDS_DEFSTATE_ON) {
 				err = pca955x_led_set(led, LED_FULL);
 				if (err)
 					return err;
@@ -617,8 +604,7 @@ static int pca955x_probe(struct i2c_client *client)
 			 * brightness to see if it's using PWM1. If so, PWM1
 			 * should not be written below.
 			 */
-			if (pdata->leds[i].default_state ==
-			    LEDS_GPIO_DEFSTATE_KEEP) {
+			if (pdata->leds[i].default_state == LEDS_DEFSTATE_KEEP) {
 				if (led->brightness != LED_FULL &&
 				    led->brightness != LED_OFF &&
 				    led->brightness != LED_HALF)