1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/misc/reset-uclass.c b/drivers/misc/reset-uclass.c
new file mode 100644
index 0000000000..fdb5c6fcff
--- /dev/null
+++ b/drivers/misc/reset-uclass.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <reset.h>
+#include <dm.h>
+#include <errno.h>
+#include <regmap.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include <linux/err.h>
+
+int reset_request(struct udevice *dev, enum reset_t type)
+{
+	struct reset_ops *ops = reset_get_ops(dev);
+
+	if (!ops->request)
+		return -ENOSYS;
+
+	return ops->request(dev, type);
+}
+
+int reset_walk(enum reset_t type)
+{
+	struct udevice *dev;
+	int ret = -ENOSYS;
+
+	while (ret != -EINPROGRESS && type < RESET_COUNT) {
+		for (uclass_first_device(UCLASS_RESET, &dev);
+		     dev;
+		     uclass_next_device(&dev)) {
+			ret = reset_request(dev, type);
+			if (ret == -EINPROGRESS)
+				break;
+		}
+		type++;
+	}
+
+	return ret;
+}
+
+void reset_walk_halt(enum reset_t type)
+{
+	int ret;
+
+	ret = reset_walk(type);
+
+	/* Wait for the reset to take effect */
+	if (ret == -EINPROGRESS)
+		mdelay(100);
+
+	/* Still no reset? Give up */
+	printf("Reset not supported on this platform\n");
+	hang();
+}
+
+/**
+ * reset_cpu() - calls reset_walk(RESET_WARM)
+ */
+void reset_cpu(ulong addr)
+{
+	reset_walk_halt(RESET_WARM);
+}
+
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	reset_walk_halt(RESET_WARM);
+
+	return 0;
+}
+
+UCLASS_DRIVER(reset) = {
+	.id		= UCLASS_RESET,
+	.name		= "reset",
+};