gpiolib: eventual of_node retirement

index e878e3f22b0e..0a33971c964c 100644
@@ -321,7 +321,7 @@ static void linehandle_free(struct linehandle_state *lh)
 		if (lh->descs[i])
 			gpiod_free(lh->descs[i]);
 	kfree(lh->label);
-	put_device(&lh->gdev->dev);
+	gpio_device_put(lh->gdev);
 	kfree(lh);
 }
 

@@ -363,8 +363,7 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip)
 	lh = kzalloc(sizeof(*lh), GFP_KERNEL);
 	if (!lh)
 		return -ENOMEM;
-	lh->gdev = gdev;
-	get_device(&gdev->dev);
+	lh->gdev = gpio_device_get(gdev);
 
 	if (handlereq.consumer_label[0] != '\0') {
 		/* label is only initialized if consumer_label is set */

@@ -1576,7 +1575,7 @@ static void linereq_free(struct linereq *lr)
 	}
 	kfifo_free(&lr->events);
 	kfree(lr->label);
-	put_device(&lr->gdev->dev);
+	gpio_device_put(lr->gdev);
 	kfree(lr);
 }
 

@@ -1646,8 +1645,7 @@ static int linereq_create(struct gpio_device *gdev, void __user *ip)
 	if (!lr)
 		return -ENOMEM;
 
-	lr->gdev = gdev;
-	get_device(&gdev->dev);
+	lr->gdev = gpio_device_get(gdev);
 
 	for (i = 0; i < ulr.num_lines; i++) {
 		lr->lines[i].req = lr;

@@ -1916,7 +1914,7 @@ static void lineevent_free(struct lineevent_state *le)
 	if (le->desc)
 		gpiod_free(le->desc);
 	kfree(le->label);
-	put_device(&le->gdev->dev);
+	gpio_device_put(le->gdev);
 	kfree(le);
 }
 

@@ -2094,8 +2092,7 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip)
 	le = kzalloc(sizeof(*le), GFP_KERNEL);
 	if (!le)
 		return -ENOMEM;
-	le->gdev = gdev;
-	get_device(&gdev->dev);
+	le->gdev = gpio_device_get(gdev);
 
 	if (eventreq.consumer_label[0] != '\0') {
 		/* label is only initialized if consumer_label is set */

@@ -2671,7 +2668,7 @@ static int gpio_chrdev_open(struct inode *inode, struct file *file)
 
 	init_waitqueue_head(&cdev->wait);
 	INIT_KFIFO(cdev->events);
-	cdev->gdev = gdev;
+	cdev->gdev = gpio_device_get(gdev);
 
 	cdev->lineinfo_changed_nb.notifier_call = lineinfo_changed_notify;
 	ret = blocking_notifier_chain_register(&gdev->notifier,

@@ -2679,7 +2676,6 @@ static int gpio_chrdev_open(struct inode *inode, struct file *file)
 	if (ret)
 		goto out_free_bitmap;
 
-	get_device(&gdev->dev);
 	file->private_data = cdev;
 
 	ret = nonseekable_open(inode, file);

@@ -2694,6 +2690,7 @@ static int gpio_chrdev_open(struct inode *inode, struct file *file)
 	blocking_notifier_chain_unregister(&gdev->notifier,
 					   &cdev->lineinfo_changed_nb);
 out_free_bitmap:
+	gpio_device_put(gdev);
 	bitmap_free(cdev->watched_lines);
 out_free_cdev:
 	kfree(cdev);

@@ -2716,7 +2713,7 @@ static int gpio_chrdev_release(struct inode *inode, struct file *file)
 	bitmap_free(cdev->watched_lines);
 	blocking_notifier_chain_unregister(&gdev->notifier,
 					   &cdev->lineinfo_changed_nb);
-	put_device(&gdev->dev);
+	gpio_device_put(gdev);
 	kfree(cdev);
 
 	return 0;

index 5a66d9616d7c..fdb0dc464218 100644
@@ -882,7 +882,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	gpiochip_free_valid_mask(gc);
 	if (gdev->dev.release) {
 		/* release() has been registered by gpiochip_setup_dev() */
-		put_device(&gdev->dev);
+		gpio_device_put(gdev);
 		goto err_print_message;
 	}
 err_remove_from_list:

@@ -972,7 +972,7 @@ void gpiochip_remove(struct gpio_chip *gc)
 	 */
 	gcdev_unregister(gdev);
 	up_write(&gdev->sem);
-	put_device(&gdev->dev);
+	gpio_device_put(gdev);
 }
 EXPORT_SYMBOL_GPL(gpiochip_remove);
 

@@ -2063,17 +2063,15 @@ static int validate_desc(const struct gpio_desc *desc, const char *func)
 int gpiod_request(struct gpio_desc *desc, const char *label)
 {
 	int ret = -EPROBE_DEFER;
-	struct gpio_device *gdev;
 
 	VALIDATE_DESC(desc);
-	gdev = desc->gdev;
 
-	if (try_module_get(gdev->owner)) {
+	if (try_module_get(desc->gdev->owner)) {
 		ret = gpiod_request_commit(desc, label);
 		if (ret)
-			module_put(gdev->owner);
+			module_put(desc->gdev->owner);
 		else
-			get_device(&gdev->dev);
+			gpio_device_get(desc->gdev);
 	}
 
 	if (ret)

@@ -2134,7 +2132,7 @@ void gpiod_free(struct gpio_desc *desc)
 {
 	if (desc && desc->gdev && gpiod_free_commit(desc)) {
 		module_put(desc->gdev->owner);
-		put_device(&desc->gdev->dev);
+		gpio_device_put(desc->gdev);
 	} else {
 		WARN_ON(extra_checks);
 	}

index b3c2db6eba80..cca81375f127 100644
@@ -82,6 +82,16 @@ static inline struct gpio_device *to_gpio_device(struct device *dev)
 	return container_of(dev, struct gpio_device, dev);
 }
 
+static inline struct gpio_device *gpio_device_get(struct gpio_device *gdev)
+{
+	return to_gpio_device(get_device(&gdev->dev));
+}
+
+static inline void gpio_device_put(struct gpio_device *gdev)
+{
+	put_device(&gdev->dev);
+}
+
 /* gpio suffixes used for ACPI and device tree lookup */
 static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };
 

index bed0380c5136..466622a8fb36 100644
@@ -1387,16 +1387,6 @@ void acpi_gpiochip_remove(struct gpio_chip *chip)
 	kfree(acpi_gpio);
 }
 
-void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev)
-{
-	/* Set default fwnode to parent's one if present */
-	if (gc->parent)
-		ACPI_COMPANION_SET(&gdev->dev, ACPI_COMPANION(gc->parent));
-
-	if (gc->fwnode)
-		device_set_node(&gdev->dev, gc->fwnode);
-}
-
 static int acpi_gpio_package_count(const union acpi_object *obj)
 {
 	const union acpi_object *element = obj->package.elements;

index 9475f99a9694..5fa315b3c912 100644
@@ -26,8 +26,6 @@ struct gpio_device;
 void acpi_gpiochip_add(struct gpio_chip *chip);
 void acpi_gpiochip_remove(struct gpio_chip *chip);
 
-void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
-
 void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
 void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
 

@@ -42,8 +40,6 @@ int acpi_gpio_count(struct device *dev, const char *con_id);
 static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
 static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
 
-static inline void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { }
-
 static inline void
 acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
 

index 4fff7258ee41..a6f9788d6db0 100644
@@ -668,7 +668,7 @@ static struct gpio_desc *of_parse_own_gpio(struct device_node *np,
 	u32 tmp;
 	int ret;
 
-	chip_np = chip->of_node;
+	chip_np = dev_of_node(&chip->gpiodev->dev);
 	if (!chip_np)
 		return ERR_PTR(-EINVAL);
 

@@ -760,7 +760,7 @@ static int of_gpiochip_scan_gpios(struct gpio_chip *chip)
 	struct device_node *np;
 	int ret;
 
-	for_each_available_child_of_node(chip->of_node, np) {
+	for_each_available_child_of_node(dev_of_node(&chip->gpiodev->dev), np) {
 		if (!of_property_read_bool(np, "gpio-hog"))
 			continue;
 

@@ -970,14 +970,15 @@ EXPORT_SYMBOL_GPL(of_mm_gpiochip_remove);
 #ifdef CONFIG_PINCTRL
 static int of_gpiochip_add_pin_range(struct gpio_chip *chip)
 {
-	struct device_node *np = chip->of_node;
 	struct of_phandle_args pinspec;
 	struct pinctrl_dev *pctldev;
+	struct device_node *np;
 	int index = 0, ret;
 	const char *name;
 	static const char group_names_propname[] = "gpio-ranges-group-names";
 	struct property *group_names;
 
+	np = dev_of_node(&chip->gpiodev->dev);
 	if (!np)
 		return 0;
 

@@ -1063,7 +1064,7 @@ int of_gpiochip_add(struct gpio_chip *chip)
 	struct device_node *np;
 	int ret;
 
-	np = to_of_node(dev_fwnode(&chip->gpiodev->dev));
+	np = dev_of_node(&chip->gpiodev->dev);
 	if (!np)
 		return 0;
 

@@ -1092,19 +1093,3 @@ void of_gpiochip_remove(struct gpio_chip *chip)
 {
 	fwnode_handle_put(chip->fwnode);
 }
-
-void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev)
-{
-	/* Set default OF node to parent's one if present */
-	if (gc->parent)
-		gdev->dev.of_node = gc->parent->of_node;
-
-	if (gc->fwnode)
-		gc->of_node = to_of_node(gc->fwnode);
-
-	/* If the gpiochip has an assigned OF node this takes precedence */
-	if (gc->of_node)
-		gdev->dev.of_node = gc->of_node;
-	else
-		gc->of_node = gdev->dev.of_node;
-}

index a6c593e6766c..e5bb065d82ef 100644
@@ -23,7 +23,6 @@ struct gpio_desc *of_find_gpio(struct device_node *np,
 int of_gpiochip_add(struct gpio_chip *gc);
 void of_gpiochip_remove(struct gpio_chip *gc);
 int of_gpio_get_count(struct device *dev, const char *con_id);
-void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
 #else
 static inline struct gpio_desc *of_find_gpio(struct device_node *np,
 					     const char *con_id,

@@ -38,10 +37,6 @@ static inline int of_gpio_get_count(struct device *dev, const char *con_id)
 {
 	return 0;
 }
-static inline void of_gpio_dev_init(struct gpio_chip *gc,
-				    struct gpio_device *gdev)
-{
-}
 #endif /* CONFIG_OF_GPIO */
 
 extern struct notifier_block gpio_of_notifier;

index fdb0dc464218..e72c539fbec5 100644
@@ -659,10 +659,12 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	int base = 0;
 	int ret = 0;
 
+	/* If the calling driver did not initialize firmware node, do it here */
 	if (gc->fwnode)
 		fwnode = gc->fwnode;
 	else if (gc->parent)
 		fwnode = dev_fwnode(gc->parent);
+	gc->fwnode = fwnode;
 
 	/*
 	 * First: allocate and populate the internal stat container, and

@@ -676,14 +678,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	gdev->chip = gc;
 	gc->gpiodev = gdev;
 
-	of_gpio_dev_init(gc, gdev);
-	acpi_gpio_dev_init(gc, gdev);
-
-	/*
-	 * Assign fwnode depending on the result of the previous calls,
-	 * if none of them succeed, assign it to the parent's one.
-	 */
-	gc->fwnode = gdev->dev.fwnode = dev_fwnode(&gdev->dev) ?: fwnode;
+	device_set_node(&gdev->dev, gc->fwnode);
 
 	gdev->id = ida_alloc(&gpio_ida, GFP_KERNEL);
 	if (gdev->id < 0) {

index 44783fc16125..2316cb7fa667 100644
@@ -503,13 +503,6 @@ struct gpio_chip {
 	 * the device tree automatically may have an OF translation
 	 */
 
-	/**
-	 * @of_node:
-	 *
-	 * Pointer to a device tree node representing this GPIO controller.
-	 */
-	struct device_node *of_node;
-
 	/**
 	 * @of_gpio_n_cells:
 	 *

index e72c539fbec5..ace11a89d24a 100644
@@ -1,34 +1,35 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/acpi.h>
 #include <linux/bitmap.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
+#include <linux/compat.h>
+#include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/err.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
+#include <linux/file.h>
+#include <linux/fs.h>
 #include <linux/gpio.h>
-#include <linux/idr.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
 #include <linux/gpio/driver.h>
 #include <linux/gpio/machine.h>
+#include <linux/idr.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
 #include <linux/pinctrl/consumer.h>
-#include <linux/fs.h>
-#include <linux/compat.h>
-#include <linux/file.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
 #include <uapi/linux/gpio.h>
 
-#include "gpiolib.h"
-#include "gpiolib-of.h"
 #include "gpiolib-acpi.h"
-#include "gpiolib-swnode.h"
 #include "gpiolib-cdev.h"
+#include "gpiolib-of.h"
+#include "gpiolib-swnode.h"
 #include "gpiolib-sysfs.h"
+#include "gpiolib.h"
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/gpio.h>