1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-of.h b/drivers/gpio/gpiolib-of.h
new file mode 100644
index 000000000000..2257f7a498a1
--- /dev/null
+++ b/drivers/gpio/gpiolib-of.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef GPIOLIB_OF_H
+#define GPIOLIB_OF_H
+
+#include <linux/err.h>
+#include <linux/types.h>
+
+#include <linux/notifier.h>
+
+struct device_node;
+struct fwnode_handle;
+
+struct gpio_chip;
+struct gpio_desc;
+struct gpio_device;
+
+#ifdef CONFIG_OF_GPIO
+struct gpio_desc *of_find_gpio(struct device_node *np,
+			       const char *con_id,
+			       unsigned int idx,
+			       unsigned long *lookupflags);
+int of_gpiochip_add(struct gpio_chip *gc);
+void of_gpiochip_remove(struct gpio_chip *gc);
+bool of_gpiochip_instance_match(struct gpio_chip *gc, unsigned int index);
+int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id);
+#else
+static inline struct gpio_desc *of_find_gpio(struct device_node *np,
+					     const char *con_id,
+					     unsigned int idx,
+					     unsigned long *lookupflags)
+{
+	return ERR_PTR(-ENOENT);
+}
+static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
+static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
+static inline bool of_gpiochip_instance_match(struct gpio_chip *gc,
+					      unsigned int index)
+{
+	return false;
+}
+static inline int of_gpio_count(const struct fwnode_handle *fwnode,
+				const char *con_id)
+{
+	return 0;
+}
+#endif /* CONFIG_OF_GPIO */
+
+extern struct notifier_block gpio_of_notifier;
+
+#endif /* GPIOLIB_OF_H */