v4.19.13 snapshot.
diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
new file mode 100644
index 0000000..3f84aeb
--- /dev/null
+++ b/include/linux/gpio_keys.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _GPIO_KEYS_H
+#define _GPIO_KEYS_H
+
+#include <linux/types.h>
+
+struct device;
+
+/**
+ * struct gpio_keys_button - configuration parameters
+ * @code: input event code (KEY_*, SW_*)
+ * @gpio: %-1 if this key does not support gpio
+ * @active_low: %true indicates that button is considered
+ * depressed when gpio is low
+ * @desc: label that will be attached to button's gpio
+ * @type: input event type (%EV_KEY, %EV_SW, %EV_ABS)
+ * @wakeup: configure the button as a wake-up source
+ * @wakeup_event_action: event action to trigger wakeup
+ * @debounce_interval: debounce ticks interval in msecs
+ * @can_disable: %true indicates that userspace is allowed to
+ * disable button via sysfs
+ * @value: axis value for %EV_ABS
+ * @irq: Irq number in case of interrupt keys
+ */
+struct gpio_keys_button {
+ unsigned int code;
+ int gpio;
+ int active_low;
+ const char *desc;
+ unsigned int type;
+ int wakeup;
+ int wakeup_event_action;
+ int debounce_interval;
+ bool can_disable;
+ int value;
+ unsigned int irq;
+};
+
+/**
+ * struct gpio_keys_platform_data - platform data for gpio_keys driver
+ * @buttons: pointer to array of &gpio_keys_button structures
+ * describing buttons attached to the device
+ * @nbuttons: number of elements in @buttons array
+ * @poll_interval: polling interval in msecs - for polling driver only
+ * @rep: enable input subsystem auto repeat
+ * @enable: platform hook for enabling the device
+ * @disable: platform hook for disabling the device
+ * @name: input device name
+ */
+struct gpio_keys_platform_data {
+ const struct gpio_keys_button *buttons;
+ int nbuttons;
+ unsigned int poll_interval;
+ unsigned int rep:1;
+ int (*enable)(struct device *dev);
+ void (*disable)(struct device *dev);
+ const char *name;
+};
+
+#endif