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@@ -0,0 +1,86 @@
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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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+ * Based on led.c
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+ */
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+
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+#include <common.h>
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+#include <command.h>
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+#include <dm.h>
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+#include <button.h>
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+#include <dm/uclass-internal.h>
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+
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+static const char *const state_label[] = {
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+ [BUTTON_OFF] = "off",
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+ [BUTTON_ON] = "on",
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+};
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+
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+static int show_button_state(struct udevice *dev)
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+{
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+ int ret;
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+
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+ ret = button_get_state(dev);
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+ if (ret >= BUTTON_COUNT)
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+ ret = -EINVAL;
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+ if (ret >= 0)
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+ printf("%s\n", state_label[ret]);
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+
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+ return ret;
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+}
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+
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+static int list_buttons(void)
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+{
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+ struct udevice *dev;
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+ int ret;
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+
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+ for (uclass_find_first_device(UCLASS_BUTTON, &dev);
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+ dev;
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+ uclass_find_next_device(&dev)) {
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+ struct button_uc_plat *plat = dev_get_uclass_platdata(dev);
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+
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+ if (!plat->label)
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+ continue;
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+ printf("%-15s ", plat->label);
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+ if (device_active(dev)) {
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+ ret = show_button_state(dev);
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+ if (ret < 0)
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+ printf("Error %d\n", ret);
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+ } else {
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+ printf("<inactive>\n");
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+ }
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+ }
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+
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+ return 0;
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+}
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+
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+int do_button(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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+{
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+ const char *button_label;
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+ struct udevice *dev;
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+ int ret;
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+
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+ /* Validate arguments */
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+ if (argc < 2)
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+ return CMD_RET_USAGE;
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+ button_label = argv[1];
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+ if (strncmp(button_label, "list", 4) == 0)
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+ return list_buttons();
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+
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+ ret = button_get_by_label(button_label, &dev);
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+ if (ret) {
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+ printf("Button '%s' not found (err=%d)\n", button_label, ret);
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+ return CMD_RET_FAILURE;
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+ }
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+
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+ ret = show_button_state(dev);
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+
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+ return 0;
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+}
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+
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+U_BOOT_CMD(
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+ button, 4, 1, do_button,
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+ "manage buttons",
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+ "<button_label> \tGet button state\n"
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+ "button list\t\tShow a list of buttons"
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+);
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