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author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2019-09-20 13:58:05 +0200 |
---|---|---|
committer | Pavel <pavel@ucw.cz> | 2019-11-03 17:37:29 +0100 |
commit | 1ab4531ad13208c7721bd98300e2aa7a3a5500a3 (patch) | |
tree | a66dd722d0f26450a4dd18cd13a2b1384f380e5b /drivers/leds | |
parent | 8b4423d6c5e6515bf6ad7c6c51dfb0a4a95ec606 (diff) | |
download | linux-1ab4531ad13208c7721bd98300e2aa7a3a5500a3.tar.gz linux-1ab4531ad13208c7721bd98300e2aa7a3a5500a3.tar.bz2 linux-1ab4531ad13208c7721bd98300e2aa7a3a5500a3.zip |
leds: tlc591xx: simplify driver by using the managed led API
Use the managed API of the LED class (devm_led_classdev_register()
instead of led_classdev_register()).
This allows us to remove the code used to track-and-destroy the LED devices.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/leds')
-rw-r--r-- | drivers/leds/leds-tlc591xx.c | 84 |
1 files changed, 22 insertions, 62 deletions
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c index 00702824d27c..bbdaa3148317 100644 --- a/drivers/leds/leds-tlc591xx.c +++ b/drivers/leds/leds-tlc591xx.c @@ -128,54 +128,6 @@ tlc591xx_brightness_set(struct led_classdev *led_cdev, return err; } -static void -tlc591xx_destroy_devices(struct tlc591xx_priv *priv, unsigned int j) -{ - int i = j; - - while (--i >= 0) { - if (priv->leds[i].active) - led_classdev_unregister(&priv->leds[i].ldev); - } -} - -static int -tlc591xx_configure(struct device *dev, - struct tlc591xx_priv *priv, - const struct tlc591xx *tlc591xx) -{ - unsigned int i; - int err = 0; - - err = tlc591xx_set_mode(priv->regmap, MODE2_DIM); - if (err < 0) - return err; - - for (i = 0; i < TLC591XX_MAX_LEDS; i++) { - struct tlc591xx_led *led = &priv->leds[i]; - - if (!led->active) - continue; - - led->priv = priv; - led->led_no = i; - led->ldev.brightness_set_blocking = tlc591xx_brightness_set; - led->ldev.max_brightness = LED_FULL; - err = led_classdev_register(dev, &led->ldev); - if (err < 0) { - dev_err(dev, "couldn't register LED %s\n", - led->ldev.name); - goto exit; - } - } - - return 0; - -exit: - tlc591xx_destroy_devices(priv, i); - return err; -} - static const struct regmap_config tlc591xx_regmap = { .reg_bits = 8, .val_bits = 8, @@ -228,7 +180,13 @@ tlc591xx_probe(struct i2c_client *client, i2c_set_clientdata(client, priv); + err = tlc591xx_set_mode(priv->regmap, MODE2_DIM); + if (err < 0) + return err; + for_each_child_of_node(np, child) { + struct tlc591xx_led *led; + err = of_property_read_u32(child, "reg", ®); if (err) { of_node_put(child); @@ -239,22 +197,25 @@ tlc591xx_probe(struct i2c_client *client, of_node_put(child); return -EINVAL; } - priv->leds[reg].active = true; - priv->leds[reg].ldev.name = + led = &priv->leds[reg]; + + led->active = true; + led->ldev.name = of_get_property(child, "label", NULL) ? : child->name; - priv->leds[reg].ldev.default_trigger = + led->ldev.default_trigger = of_get_property(child, "linux,default-trigger", NULL); - } - return tlc591xx_configure(dev, priv, tlc591xx); -} - -static int -tlc591xx_remove(struct i2c_client *client) -{ - struct tlc591xx_priv *priv = i2c_get_clientdata(client); - - tlc591xx_destroy_devices(priv, TLC591XX_MAX_LEDS); + led->priv = priv; + led->led_no = reg; + led->ldev.brightness_set_blocking = tlc591xx_brightness_set; + led->ldev.max_brightness = LED_FULL; + err = devm_led_classdev_register(dev, &led->ldev); + if (err < 0) { + dev_err(dev, "couldn't register LED %s\n", + led->ldev.name); + return err; + } + } return 0; } @@ -271,7 +232,6 @@ static struct i2c_driver tlc591xx_driver = { .of_match_table = of_match_ptr(of_tlc591xx_leds_match), }, .probe = tlc591xx_probe, - .remove = tlc591xx_remove, .id_table = tlc591xx_id, }; |