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Commit 73f103c9 authored by Daniel Mack's avatar Daniel Mack Committed by Jacek Anaszewski
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leds: lt3593: switch to gpiod interface 



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

Signed-off-by: default avatarDaniel Mack <daniel@zonque.org>
Signed-off-by: default avatarJacek Anaszewski <jacek.anaszewski@gmail.com>
parent d8be2867

drivers/leds/leds-lt3593.c

+12 −14
Original line number Diff line number Diff line
@@ -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);