ipq806x: drop gpio export patch

The hack isn't used by any board.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ipq806x/patches-4.14/0066-GPIO-add-named-gpio-exports.patch

@@ -1,166 +0,0 @@
-From a37b0c9113647b2120cf1a18cfc46afdb3f1fccc Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Tue, 12 Aug 2014 20:49:27 +0200
-Subject: [PATCH 66/69] GPIO: add named gpio exports
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- drivers/gpio/gpiolib-of.c     | 68 +++++++++++++++++++++++++++++++++++++++++++
- drivers/gpio/gpiolib-sysfs.c  | 10 ++++++-
- include/asm-generic/gpio.h    |  6 ++++
- include/linux/gpio/consumer.h |  8 +++++
- 4 files changed, 91 insertions(+), 1 deletion(-)
-
---- a/drivers/gpio/gpiolib-of.c
-+++ b/drivers/gpio/gpiolib-of.c
-@@ -23,6 +23,8 @@
- #include <linux/pinctrl/pinctrl.h>
- #include <linux/slab.h>
- #include <linux/gpio/machine.h>
-+#include <linux/init.h>
-+#include <linux/platform_device.h>
- 
- #include "gpiolib.h"
- 
-@@ -506,3 +508,69 @@ void of_gpiochip_remove(struct gpio_chip
- 	gpiochip_remove_pin_ranges(chip);
- 	of_node_put(chip->of_node);
- }
-+
-+static struct of_device_id gpio_export_ids[] = {
-+	{ .compatible = "gpio-export" },
-+	{ /* sentinel */ }
-+};
-+
-+static int __init of_gpio_export_probe(struct platform_device *pdev)
-+{
-+	struct device_node *np = pdev->dev.of_node;
-+	struct device_node *cnp;
-+	u32 val;
-+	int nb = 0;
-+
-+	for_each_child_of_node(np, cnp) {
-+		const char *name = NULL;
-+		int gpio;
-+		bool dmc;
-+		int max_gpio = 1;
-+		int i;
-+
-+		of_property_read_string(cnp, "gpio-export,name", &name);
-+
-+		if (!name)
-+			max_gpio = of_gpio_count(cnp);
-+
-+		for (i = 0; i < max_gpio; i++) {
-+			unsigned flags = 0;
-+			enum of_gpio_flags of_flags;
-+
-+			gpio = of_get_gpio_flags(cnp, i, &of_flags);
-+
-+			if (of_flags == OF_GPIO_ACTIVE_LOW)
-+				flags |= GPIOF_ACTIVE_LOW;
-+
-+			if (!of_property_read_u32(cnp, "gpio-export,output", &val))
-+				flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
-+			else
-+				flags |= GPIOF_IN;
-+
-+			if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np)))
-+				continue;
-+
-+			dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change");
-+			gpio_export_with_name(gpio, dmc, name);
-+			nb++;
-+		}
-+	}
-+
-+	dev_info(&pdev->dev, "%d gpio(s) exported\n", nb);
-+
-+	return 0;
-+}
-+
-+static struct platform_driver gpio_export_driver = {
-+	.driver		= {
-+		.name		= "gpio-export",
-+		.owner	= THIS_MODULE,
-+		.of_match_table	= of_match_ptr(gpio_export_ids),
-+	},
-+};
-+
-+static int __init of_gpio_export_init(void)
-+{
-+	return platform_driver_probe(&gpio_export_driver, of_gpio_export_probe);
-+}
-+device_initcall(of_gpio_export_init);
---- a/drivers/gpio/gpiolib-sysfs.c
-+++ b/drivers/gpio/gpiolib-sysfs.c
-@@ -553,7 +553,7 @@ static struct class gpio_class = {
-  *
-  * Returns zero on success, else an error.
-  */
--int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
-+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name)
- {
- 	struct gpio_chip	*chip;
- 	struct gpio_device	*gdev;
-@@ -615,6 +615,8 @@ int gpiod_export(struct gpio_desc *desc,
- 	offset = gpio_chip_hwgpio(desc);
- 	if (chip->names && chip->names[offset])
- 		ioname = chip->names[offset];
-+	if (name)
-+		ioname = name;
- 
- 	dev = device_create_with_groups(&gpio_class, &gdev->dev,
- 					MKDEV(0, 0), data, gpio_groups,
-@@ -636,6 +638,12 @@ err_unlock:
- 	gpiod_dbg(desc, "%s: status %d\n", __func__, status);
- 	return status;
- }
-+EXPORT_SYMBOL_GPL(__gpiod_export);
-+
-+int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
-+{
-+	return __gpiod_export(desc, direction_may_change, NULL);
-+}
- EXPORT_SYMBOL_GPL(gpiod_export);
- 
- static int match_export(struct device *dev, const void *desc)
---- a/include/asm-generic/gpio.h
-+++ b/include/asm-generic/gpio.h
-@@ -127,6 +127,12 @@ static inline int gpio_export(unsigned g
- 	return gpiod_export(gpio_to_desc(gpio), direction_may_change);
- }
- 
-+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
-+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
-+{
-+	return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
-+}
-+
- static inline int gpio_export_link(struct device *dev, const char *name,
- 				   unsigned gpio)
- {
---- a/include/linux/gpio/consumer.h
-+++ b/include/linux/gpio/consumer.h
-@@ -451,6 +451,7 @@ struct gpio_desc *devm_fwnode_get_gpiod_
- 
- #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
- 
-+int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
- int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
- int gpiod_export_link(struct device *dev, const char *name,
- 		      struct gpio_desc *desc);
-@@ -458,6 +459,13 @@ void gpiod_unexport(struct gpio_desc *de
- 
- #else  /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
- 
-+static inline int _gpiod_export(struct gpio_desc *desc,
-+			       bool direction_may_change,
-+			       const char *name)
-+{
-+	return -ENOSYS;
-+}
-+
- static inline int gpiod_export(struct gpio_desc *desc,
- 			       bool direction_may_change)
- {