leds: Delete GPIO LED trigger

diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c
deleted file mode 100644
index 0120faa3dafa..000000000000
--- a/drivers/leds/trigger/ledtrig-gpio.c
+++ /dev/null
@@ -1,202 +0,0 @@ 
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * ledtrig-gio.c - LED Trigger Based on GPIO events
- *
- * Copyright 2009 Felipe Balbi <me@felipebalbi.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/gpio.h>
-#include <linux/interrupt.h>
-#include <linux/leds.h>
-#include <linux/slab.h>
-#include "../leds.h"
-
-struct gpio_trig_data {
-	struct led_classdev *led;
-
-	unsigned desired_brightness;	/* desired brightness when led is on */
-	unsigned inverted;		/* true when gpio is inverted */
-	unsigned gpio;			/* gpio that triggers the leds */
-};
-
-static irqreturn_t gpio_trig_irq(int irq, void *_led)
-{
-	struct led_classdev *led = _led;
-	struct gpio_trig_data *gpio_data = led_get_trigger_data(led);
-	int tmp;
-
-	tmp = gpio_get_value_cansleep(gpio_data->gpio);
-	if (gpio_data->inverted)
-		tmp = !tmp;
-
-	if (tmp) {
-		if (gpio_data->desired_brightness)
-			led_set_brightness_nosleep(gpio_data->led,
-					   gpio_data->desired_brightness);
-		else
-			led_set_brightness_nosleep(gpio_data->led, LED_FULL);
-	} else {
-		led_set_brightness_nosleep(gpio_data->led, LED_OFF);
-	}
-
-	return IRQ_HANDLED;
-}
-
-static ssize_t gpio_trig_brightness_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-
-	return sprintf(buf, "%u\n", gpio_data->desired_brightness);
-}
-
-static ssize_t gpio_trig_brightness_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t n)
-{
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-	unsigned desired_brightness;
-	int ret;
-
-	ret = sscanf(buf, "%u", &desired_brightness);
-	if (ret < 1 || desired_brightness > 255) {
-		dev_err(dev, "invalid value\n");
-		return -EINVAL;
-	}
-
-	gpio_data->desired_brightness = desired_brightness;
-
-	return n;
-}
-static DEVICE_ATTR(desired_brightness, 0644, gpio_trig_brightness_show,
-		gpio_trig_brightness_store);
-
-static ssize_t gpio_trig_inverted_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-
-	return sprintf(buf, "%u\n", gpio_data->inverted);
-}
-
-static ssize_t gpio_trig_inverted_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t n)
-{
-	struct led_classdev *led = led_trigger_get_led(dev);
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-	unsigned long inverted;
-	int ret;
-
-	ret = kstrtoul(buf, 10, &inverted);
-	if (ret < 0)
-		return ret;
-
-	if (inverted > 1)
-		return -EINVAL;
-
-	gpio_data->inverted = inverted;
-
-	/* After inverting, we need to update the LED. */
-	if (gpio_is_valid(gpio_data->gpio))
-		gpio_trig_irq(0, led);
-
-	return n;
-}
-static DEVICE_ATTR(inverted, 0644, gpio_trig_inverted_show,
-		gpio_trig_inverted_store);
-
-static ssize_t gpio_trig_gpio_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-
-	return sprintf(buf, "%u\n", gpio_data->gpio);
-}
-
-static ssize_t gpio_trig_gpio_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t n)
-{
-	struct led_classdev *led = led_trigger_get_led(dev);
-	struct gpio_trig_data *gpio_data = led_trigger_get_drvdata(dev);
-	unsigned gpio;
-	int ret;
-
-	ret = sscanf(buf, "%u", &gpio);
-	if (ret < 1) {
-		dev_err(dev, "couldn't read gpio number\n");
-		return -EINVAL;
-	}
-
-	if (gpio_data->gpio == gpio)
-		return n;
-
-	if (!gpio_is_valid(gpio)) {
-		if (gpio_is_valid(gpio_data->gpio))
-			free_irq(gpio_to_irq(gpio_data->gpio), led);
-		gpio_data->gpio = gpio;
-		return n;
-	}
-
-	ret = request_threaded_irq(gpio_to_irq(gpio), NULL, gpio_trig_irq,
-			IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_RISING
-			| IRQF_TRIGGER_FALLING, "ledtrig-gpio", led);
-	if (ret) {
-		dev_err(dev, "request_irq failed with error %d\n", ret);
-	} else {
-		if (gpio_is_valid(gpio_data->gpio))
-			free_irq(gpio_to_irq(gpio_data->gpio), led);
-		gpio_data->gpio = gpio;
-		/* After changing the GPIO, we need to update the LED. */
-		gpio_trig_irq(0, led);
-	}
-
-	return ret ? ret : n;
-}
-static DEVICE_ATTR(gpio, 0644, gpio_trig_gpio_show, gpio_trig_gpio_store);
-
-static struct attribute *gpio_trig_attrs[] = {
-	&dev_attr_desired_brightness.attr,
-	&dev_attr_inverted.attr,
-	&dev_attr_gpio.attr,
-	NULL
-};
-ATTRIBUTE_GROUPS(gpio_trig);
-
-static int gpio_trig_activate(struct led_classdev *led)
-{
-	struct gpio_trig_data *gpio_data;
-
-	gpio_data = kzalloc(sizeof(*gpio_data), GFP_KERNEL);
-	if (!gpio_data)
-		return -ENOMEM;
-
-	gpio_data->led = led;
-	gpio_data->gpio = -ENOENT;
-
-	led_set_trigger_data(led, gpio_data);
-
-	return 0;
-}
-
-static void gpio_trig_deactivate(struct led_classdev *led)
-{
-	struct gpio_trig_data *gpio_data = led_get_trigger_data(led);
-
-	if (gpio_is_valid(gpio_data->gpio))
-		free_irq(gpio_to_irq(gpio_data->gpio), led);
-	kfree(gpio_data);
-}
-
-static struct led_trigger gpio_led_trigger = {
-	.name		= "gpio",
-	.activate	= gpio_trig_activate,
-	.deactivate	= gpio_trig_deactivate,
-	.groups		= gpio_trig_groups,
-};
-module_led_trigger(gpio_led_trigger);
-
-MODULE_AUTHOR("Felipe Balbi <me@felipebalbi.com>");
-MODULE_DESCRIPTION("GPIO LED trigger");
-MODULE_LICENSE("GPL v2");