From: Jean-Jacques Hiblot <jjhiblot@ti.com>
To: <jacek.anaszewski@gmail.com>, <pavel@ucw.cz>, <dmurphy@ti.com>
Cc: <tomi.valkeinen@ti.com>, <linux-leds@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Jean-Jacques Hiblot <jjhiblot@ti.com>
Subject: [RESEND,v2 1/2] leds: tlc591xx: simplify driver by using the managed led API
Date: Tue, 10 Sep 2019 15:38:13 +0200 [thread overview]
Message-ID: <20190910133814.10275-2-jjhiblot@ti.com> (raw)
In-Reply-To: <20190910133814.10275-1-jjhiblot@ti.com>
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>
---
drivers/leds/leds-tlc591xx.c | 79 +++++++++---------------------------
1 file changed, 20 insertions(+), 59 deletions(-)
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
index 59ff088c7d75..3d5a4b92f016 100644
--- a/drivers/leds/leds-tlc591xx.c
+++ b/drivers/leds/leds-tlc591xx.c
@@ -128,51 +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;
-
- tlc591xx_set_mode(priv->regmap, MODE2_DIM);
- 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,
@@ -225,7 +180,11 @@ tlc591xx_probe(struct i2c_client *client,
i2c_set_clientdata(client, priv);
+ tlc591xx_set_mode(priv->regmap, MODE2_DIM);
+
for_each_child_of_node(np, child) {
+ struct tlc591xx_led *led;
+
err = of_property_read_u32(child, "reg", ®);
if (err) {
of_node_put(child);
@@ -236,22 +195,25 @@ 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;
}
@@ -268,7 +230,6 @@ 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,
};
--
2.17.1
next prev parent reply other threads:[~2019-09-10 13:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-10 13:38 [RESEND,v2 0/2] leds: tlc591xx: switch to OF and managed API Jean-Jacques Hiblot
2019-09-10 13:38 ` Jean-Jacques Hiblot [this message]
2019-09-10 13:38 ` [RESEND,v2 2/2] leds: tlc591xx: Use the OF version of the LED registration function Jean-Jacques Hiblot
2019-09-10 20:08 ` Jacek Anaszewski
2019-09-11 8:20 ` Jean-Jacques Hiblot
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