linux-kernel - [PATCH 10/24] leds: lp8860: Use led_compose

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Date:   Tue,  6 Nov 2018 23:07:18 +0100
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     linux-leds@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        pavel@....cz, robh@...nel.org, jacek.anaszewski@...il.com,
        Dan Murphy <dmurphy@...com>
Subject: [PATCH 10/24] leds: lp8860: Use led_compose_name()

Switch to using generic LED support for composing LED class
device name.

Signed-off-by: Jacek Anaszewski <jacek.anaszewski@...il.com>
Signed-off-by: Dan Murphy <dmurphy@...com>
---
 drivers/leds/leds-lp8860.c | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c
index 39c72a9..7c12ccd 100644
--- a/drivers/leds/leds-lp8860.c
+++ b/drivers/leds/leds-lp8860.c
@@ -22,7 +22,6 @@
 #include <linux/of_gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/slab.h>
-#include <uapi/linux/uleds.h>
 
 #define LP8860_DISP_CL1_BRT_MSB		0x00
 #define LP8860_DISP_CL1_BRT_LSB		0x01
@@ -87,6 +86,8 @@
 
 #define LP8860_CLEAR_FAULTS		0x01
 
+#define LP8860_NAME			"lp8860"
+
 /**
  * struct lp8860_led -
  * @lock - Lock for reading/writing the device
@@ -96,7 +97,6 @@
  * @eeprom_regmap - EEPROM register map
  * @enable_gpio - VDDIO/EN gpio to enable communication interface
  * @regulator - LED supply regulator pointer
- * @label - LED label
  */
 struct lp8860_led {
 	struct mutex lock;
@@ -106,7 +106,6 @@ struct lp8860_led {
 	struct regmap *eeprom_regmap;
 	struct gpio_desc *enable_gpio;
 	struct regulator *regulator;
-	char label[LED_MAX_NAME_SIZE];
 };
 
 struct lp8860_eeprom_reg {
@@ -387,25 +386,26 @@ static int lp8860_probe(struct i2c_client *client,
 	struct lp8860_led *led;
 	struct device_node *np = client->dev.of_node;
 	struct device_node *child_node;
-	const char *name;
+	struct led_init_data init_data;
 
 	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::display_cluster", id->name);
-	}
+	child_node = of_get_next_available_child(np, NULL);
+	if (!child_node)
+		return -EINVAL;
+
+	init_data.fwnode = of_fwnode_handle(child_node),
+
+	led->led_dev.default_trigger = of_get_property(child_node,
+					    "linux,default-trigger",
+					    NULL);
+
+	ret = led_compose_name(init_data.fwnode, LP8860_NAME,
+			       ":display_cluster", init_data.name);
+	if (ret)
+		return ret;
 
 	led->enable_gpio = devm_gpiod_get_optional(&client->dev,
 						   "enable", GPIOD_OUT_LOW);
@@ -420,7 +420,6 @@ static int lp8860_probe(struct i2c_client *client,
 		led->regulator = NULL;
 
 	led->client = client;
-	led->led_dev.name = led->label;
 	led->led_dev.brightness_set_blocking = lp8860_brightness_set;
 
 	mutex_init(&led->lock);
@@ -447,7 +446,8 @@ static int lp8860_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	ret = devm_led_classdev_register(&client->dev, &led->led_dev);
+	ret = devm_led_classdev_register_ext(&client->dev, &led->led_dev,
+					     &init_data);
 	if (ret) {
 		dev_err(&client->dev, "led register err: %d\n", ret);
 		return ret;
-- 
2.1.4