--- zzzz-none-000/linux-3.10.107/drivers/power/reset/gpio-poweroff.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/power/reset/gpio-poweroff.c	2021-02-04 17:41:59.000000000 +0000
@@ -15,31 +15,29 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/of_platform.h>
-#include <linux/of_gpio.h>
 #include <linux/module.h>
 
 /*
  * Hold configuration here, cannot be more than one instance of the driver
  * since pm_power_off itself is global.
  */
-static int gpio_num = -1;
-static int gpio_active_low;
+static struct gpio_desc *reset_gpio;
 
 static void gpio_poweroff_do_poweroff(void)
 {
-	BUG_ON(!gpio_is_valid(gpio_num));
+	BUG_ON(!reset_gpio);
 
 	/* drive it active, also inactive->active edge */
-	gpio_direction_output(gpio_num, !gpio_active_low);
+	gpiod_direction_output(reset_gpio, 1);
 	mdelay(100);
 	/* drive inactive, also active->inactive edge */
-	gpio_set_value(gpio_num, gpio_active_low);
+	gpiod_set_value(reset_gpio, 0);
 	mdelay(100);
 
 	/* drive it active, also inactive->active edge */
-	gpio_set_value(gpio_num, !gpio_active_low);
+	gpiod_set_value(reset_gpio, 1);
 
 	/* give it some time */
 	mdelay(3000);
@@ -49,54 +47,33 @@
 
 static int gpio_poweroff_probe(struct platform_device *pdev)
 {
-	enum of_gpio_flags flags;
 	bool input = false;
-	int ret;
+	enum gpiod_flags flags;
 
 	/* If a pm_power_off function has already been added, leave it alone */
 	if (pm_power_off != NULL) {
-		pr_err("%s: pm_power_off function already registered",
+		dev_err(&pdev->dev,
+			"%s: pm_power_off function already registered",
 		       __func__);
 		return -EBUSY;
 	}
 
-	gpio_num = of_get_gpio_flags(pdev->dev.of_node, 0, &flags);
-	if (!gpio_is_valid(gpio_num))
-		return gpio_num;
-
-	gpio_active_low = flags & OF_GPIO_ACTIVE_LOW;
-
 	input = of_property_read_bool(pdev->dev.of_node, "input");
-
-	ret = gpio_request(gpio_num, "poweroff-gpio");
-	if (ret) {
-		pr_err("%s: Could not get GPIO %d", __func__, gpio_num);
-		return ret;
-	}
-	if (input) {
-		if (gpio_direction_input(gpio_num)) {
-			pr_err("Could not set direction of GPIO %d to input",
-			       gpio_num);
-			goto err;
-		}
-	} else {
-		if (gpio_direction_output(gpio_num, gpio_active_low)) {
-			pr_err("Could not set direction of GPIO %d", gpio_num);
-			goto err;
-		}
-	}
+	if (input)
+		flags = GPIOD_IN;
+	else
+		flags = GPIOD_OUT_LOW;
+
+	reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags);
+	if (IS_ERR(reset_gpio))
+		return PTR_ERR(reset_gpio);
 
 	pm_power_off = &gpio_poweroff_do_poweroff;
 	return 0;
-
-err:
-	gpio_free(gpio_num);
-	return -ENODEV;
 }
 
 static int gpio_poweroff_remove(struct platform_device *pdev)
 {
-	gpio_free(gpio_num);
 	if (pm_power_off == &gpio_poweroff_do_poweroff)
 		pm_power_off = NULL;
 
@@ -113,7 +90,6 @@
 	.remove = gpio_poweroff_remove,
 	.driver = {
 		.name = "poweroff-gpio",
-		.owner = THIS_MODULE,
 		.of_match_table = of_gpio_poweroff_match,
 	},
 };