leds: lm3692x: Change DT calls to fwnode calls

Update the code to use the fwnode calls as opposed
to ARM DT node api's.

This allows the device to be used with either DT
configurations or ACPI definitions.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

1 files changed, 21 insertions, 17 deletions

diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index e518ae36f410..9e6432b6a3b5 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -267,30 +267,15 @@ out:
 static int lm3692x_probe(struct i2c_client *client,
                         const struct i2c_device_id *id)
 {
-        int ret;
+        struct fwnode_handle *child = NULL;
         struct lm3692x_led *led;
-        struct device_node *np = client->dev.of_node;
-        struct device_node *child_node;
         const char *name;
+        int ret;
 
         led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
         if (!led)
                 return -ENOMEM;
 
-        for_each_available_child_of_node(np, child_node) {
-                led->led_dev.default_trigger = of_get_property(child_node,
-                                                    "linux,default-trigger",
-                                                    NULL);
-
-                ret = of_property_read_string(child_node, "label", &name);
-                if (!ret)
-                        snprintf(led->label, sizeof(led->label),
-                                 "%s:%s", id->name, name);
-                else
-                        snprintf(led->label, sizeof(led->label),
-                                 "%s::backlight_cluster", id->name);
-        };
-
         led->enable_gpio = devm_gpiod_get_optional(&client->dev,
                                                    "enable", GPIOD_OUT_LOW);
         if (IS_ERR(led->enable_gpio)) {
@@ -323,6 +308,25 @@ static int lm3692x_probe(struct i2c_client *client,
         if (ret)
                 return ret;
 
+        child = device_get_next_child_node(&led->client->dev, child);
+        if (!child) {
+                dev_err(&led->client->dev, "No LED Child node\n");
+                return ret;
+        }
+
+        fwnode_property_read_string(child, "linux,default-trigger",
+                                    &led->led_dev.default_trigger);
+
+        ret = fwnode_property_read_string(child, "label", &name);
+        if (ret)
+                snprintf(led->label, sizeof(led->label),
+                        "%s::", led->client->name);
+        else
+                snprintf(led->label, sizeof(led->label),
+                         "%s:%s", led->client->name, name);
+
+        led->led_dev.dev->of_node = to_of_node(child);
+
         ret = devm_led_classdev_register(&client->dev, &led->led_dev);
         if (ret) {
                 dev_err(&client->dev, "led register err: %d\n", ret);