leds: lp8860: Various fixes to align with LED framework

Update the driver to conform with the LED framework:
 - use devm_led_classdev_register
 - destroy mutex on exit
 - remove dependency on CONFIG_OF in the driver and move
   to the Kconfig
 - update the MODULE_LICENSE to GPL v2
 - remove setting of MAX brightness as the LED framework
   does this.

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

2 files changed, 6 insertions, 9 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 1d215b39cefd..3e763d2a0cb3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -354,7 +354,7 @@ config LEDS_LP8788
 
 config LEDS_LP8860
         tristate "LED support for the TI LP8860 4 channel LED driver"
-        depends on LEDS_CLASS && I2C
+        depends on LEDS_CLASS && I2C && OF
         select REGMAP_I2C
         help
           If you say yes here you get support for the TI LP8860 4 channel
diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c
index 94b996b343ce..39c72a908f3b 100644
--- a/drivers/leds/leds-lp8860.c
+++ b/drivers/leds/leds-lp8860.c
@@ -421,7 +421,6 @@ static int lp8860_probe(struct i2c_client *client,
 
         led->client = client;
         led->led_dev.name = led->label;
-        led->led_dev.max_brightness = LED_FULL;
         led->led_dev.brightness_set_blocking = lp8860_brightness_set;
 
         mutex_init(&led->lock);
@@ -448,7 +447,7 @@ static int lp8860_probe(struct i2c_client *client,
         if (ret)
                 return ret;
 
-        ret = led_classdev_register(&client->dev, &led->led_dev);
+        ret = devm_led_classdev_register(&client->dev, &led->led_dev);
         if (ret) {
                 dev_err(&client->dev, "led register err: %d\n", ret);
                 return ret;
@@ -462,8 +461,6 @@ static int lp8860_remove(struct i2c_client *client)
         struct lp8860_led *led = i2c_get_clientdata(client);
         int ret;
 
-        led_classdev_unregister(&led->led_dev);
-
         if (led->enable_gpio)
                 gpiod_direction_output(led->enable_gpio, 0);
 
@@ -474,6 +471,8 @@ static int lp8860_remove(struct i2c_client *client)
                                 "Failed to disable regulator\n");
         }
 
+        mutex_destroy(&led->lock);
+
         return 0;
 }
 
@@ -483,18 +482,16 @@ static const struct i2c_device_id lp8860_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, lp8860_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id of_lp8860_leds_match[] = {
         { .compatible = "ti,lp8860", },
         {},
 };
 MODULE_DEVICE_TABLE(of, of_lp8860_leds_match);
-#endif
 
 static struct i2c_driver lp8860_driver = {
         .driver = {
                 .name   = "lp8860",
-                .of_match_table = of_match_ptr(of_lp8860_leds_match),
+                .of_match_table = of_lp8860_leds_match,
         },
         .probe          = lp8860_probe,
         .remove         = lp8860_remove,
@@ -504,4 +501,4 @@ module_i2c_driver(lp8860_driver);
 
 MODULE_DESCRIPTION("Texas Instruments LP8860 LED driver");
 MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");