leds: lt3593: switch to gpiod interface

Clean up the code a bit and transition over to the gpiod based interface.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 1a3dc34..a096ee6 100644 (file)
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -21,12 +21,13 @@
 #include <linux/leds.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 
 struct lt3593_led_data {
        struct led_classdev cdev;
-       unsigned gpio;
+       struct gpio_desc *gpiod;
 };
 
 static int lt3593_led_set(struct led_classdev *led_cdev,
@@ -46,25 +47,25 @@ static int lt3593_led_set(struct led_classdev *led_cdev,
         */
 
        if (value == 0) {
-               gpio_set_value_cansleep(led_dat->gpio, 0);
+               gpiod_set_value_cansleep(led_dat->gpiod, 0);
                return 0;
        }
 
        pulses = 32 - (value * 32) / 255;
 
        if (pulses == 0) {
-               gpio_set_value_cansleep(led_dat->gpio, 0);
+               gpiod_set_value_cansleep(led_dat->gpiod, 0);
                mdelay(1);
-               gpio_set_value_cansleep(led_dat->gpio, 1);
+               gpiod_set_value_cansleep(led_dat->gpiod, 1);
                return 0;
        }
 
-       gpio_set_value_cansleep(led_dat->gpio, 1);
+       gpiod_set_value_cansleep(led_dat->gpiod, 1);
 
        while (pulses--) {
-               gpio_set_value_cansleep(led_dat->gpio, 0);
+               gpiod_set_value_cansleep(led_dat->gpiod, 0);
                udelay(1);
-               gpio_set_value_cansleep(led_dat->gpio, 1);
+               gpiod_set_value_cansleep(led_dat->gpiod, 1);
                udelay(1);
        }
 
@@ -85,15 +86,8 @@ static struct lt3593_led_data *lt3593_led_probe_pdata(struct device *dev)
        if (!led_data)
                return ERR_PTR(-ENOMEM);
 
-       if (!gpio_is_valid(template->gpio)) {
-               dev_info(dev, "skipping unavailable LT3593 LED at gpio "
-                        "%d (%s)\n", template->gpio, template->name);
-               return ERR_PTR(-EINVAL);
-       }
-
        led_data->cdev.name = template->name;
        led_data->cdev.default_trigger = template->default_trigger;
-       led_data->gpio = template->gpio;
        led_data->cdev.brightness_set_blocking = lt3593_led_set;
 
        state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
@@ -108,6 +102,10 @@ static struct lt3593_led_data *lt3593_led_probe_pdata(struct device *dev)
        if (ret < 0)
                return ERR_PTR(ret);
 
+       led_data->gpiod = gpio_to_desc(template->gpio);
+       if (!led_data->gpiod)
+               return ERR_PTR(-EPROBE_DEFER);
+
        ret = devm_led_classdev_register(dev, &led_data->cdev);
        if (ret < 0)
                return ERR_PTR(ret);