1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/button/button-uclass.c b/drivers/button/button-uclass.c
new file mode 100644
index 0000000000..1c742c265c
--- /dev/null
+++ b/drivers/button/button-uclass.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
+ *
+ * Based on led-uclass.c
+ */
+
+#include <common.h>
+#include <button.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+
+int button_get_by_label(const char *label, struct udevice **devp)
+{
+	struct udevice *dev;
+	struct uclass *uc;
+
+	uclass_id_foreach_dev(UCLASS_BUTTON, dev, uc) {
+		struct button_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
+
+		/* Ignore the top-level button node */
+		if (uc_plat->label && !strcmp(label, uc_plat->label))
+			return uclass_get_device_tail(dev, 0, devp);
+	}
+
+	return -ENODEV;
+}
+
+enum button_state_t button_get_state(struct udevice *dev)
+{
+	struct button_ops *ops = button_get_ops(dev);
+
+	if (!ops->get_state)
+		return -ENOSYS;
+
+	return ops->get_state(dev);
+}
+
+UCLASS_DRIVER(button) = {
+	.id		= UCLASS_BUTTON,
+	.name		= "button",
+	.per_device_platdata_auto_alloc_size = sizeof(struct button_uc_plat),
+};