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@@ -0,0 +1,59 @@
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+/* SPDX-License-Identifier: GPL-2.0+ */
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+/*
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+ * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
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+ */
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+
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+#ifndef __BUTTON_H
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+#define __BUTTON_H
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+
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+/**
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+ * struct button_uc_plat - Platform data the uclass stores about each device
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+ *
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+ * @label: Button label
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+ */
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+struct button_uc_plat {
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+ const char *label;
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+};
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+
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+/**
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+ * enum button_state_t - State used for button
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+ * - BUTTON_OFF - Button is not pressed
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+ * - BUTTON_ON - Button is pressed
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+ * - BUTTON_COUNT - Number of button state
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+ */
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+enum button_state_t {
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+ BUTTON_OFF = 0,
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+ BUTTON_ON = 1,
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+ BUTTON_COUNT,
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+};
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+
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+struct button_ops {
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+ /**
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+ * get_state() - get the state of a button
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+ *
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+ * @dev: button device to change
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+ * @return button state button_state_t, or -ve on error
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+ */
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+ enum button_state_t (*get_state)(struct udevice *dev);
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+};
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+
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+#define button_get_ops(dev) ((struct button_ops *)(dev)->driver->ops)
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+
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+/**
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+ * button_get_by_label() - Find a button device by label
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+ *
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+ * @label: button label to look up
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+ * @devp: Returns the associated device, if found
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+ * @return 0 if found, -ENODEV if not found, other -ve on error
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+ */
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+int button_get_by_label(const char *label, struct udevice **devp);
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+
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+/**
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+ * button_get_state() - get the state of a button
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+ *
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+ * @dev: button device to change
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+ * @return button state button_state_t, or -ve on error
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+ */
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+enum button_state_t button_get_state(struct udevice *dev);
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+
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+#endif
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