1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/misc/misc_sandbox.c b/drivers/misc/misc_sandbox.c
new file mode 100644
index 00000000000..e4164f76fba
--- /dev/null
+++ b/drivers/misc/misc_sandbox.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018
+ * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <misc.h>
+
+struct misc_sandbox_priv {
+	u8 mem[128];
+	ulong last_ioctl;
+	bool enabled;
+};
+
+int misc_sandbox_read(struct udevice *dev, int offset, void *buf, int size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	memcpy(buf, priv->mem + offset, size);
+
+	return 0;
+}
+
+int misc_sandbox_write(struct udevice *dev, int offset, const void *buf,
+		       int size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	memcpy(priv->mem + offset, buf, size);
+
+	return 0;
+}
+
+int misc_sandbox_ioctl(struct udevice *dev, unsigned long request, void *buf)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->last_ioctl = request;
+
+	return 0;
+}
+
+int misc_sandbox_call(struct udevice *dev, int msgid, void *tx_msg,
+		      int tx_size, void *rx_msg, int rx_size)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	if (msgid == 0) {
+		int num = *(int *)tx_msg;
+
+		switch (num) {
+		case 0:
+			strncpy(rx_msg, "Zero", rx_size);
+			break;
+		case 1:
+			strncpy(rx_msg, "One", rx_size);
+			break;
+		case 2:
+			strncpy(rx_msg, "Two", rx_size);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (msgid == 1) {
+		int num = *(int *)tx_msg;
+
+		switch (num) {
+		case 0:
+			strncpy(rx_msg, "Forty", rx_size);
+			break;
+		case 1:
+			strncpy(rx_msg, "Forty-one", rx_size);
+			break;
+		case 2:
+			strncpy(rx_msg, "Forty-two", rx_size);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (msgid == 2)
+		memcpy(rx_msg, &priv->last_ioctl, sizeof(priv->last_ioctl));
+
+	if (msgid == 3)
+		memcpy(rx_msg, &priv->enabled, sizeof(priv->enabled));
+
+	return 0;
+}
+
+int misc_sandbox_set_enabled(struct udevice *dev, bool val)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->enabled = !priv->enabled;
+
+	return 0;
+}
+
+static const struct misc_ops misc_sandbox_ops = {
+	.read = misc_sandbox_read,
+	.write = misc_sandbox_write,
+	.ioctl = misc_sandbox_ioctl,
+	.call = misc_sandbox_call,
+	.set_enabled = misc_sandbox_set_enabled,
+};
+
+int misc_sandbox_probe(struct udevice *dev)
+{
+	struct misc_sandbox_priv *priv = dev_get_priv(dev);
+
+	priv->enabled = true;
+
+	return 0;
+}
+
+static const struct udevice_id misc_sandbox_ids[] = {
+	{ .compatible = "sandbox,misc_sandbox" },
+	{ }
+};
+
+U_BOOT_DRIVER(misc_sandbox) = {
+	.name           = "misc_sandbox",
+	.id             = UCLASS_MISC,
+	.ops		= &misc_sandbox_ops,
+	.of_match       = misc_sandbox_ids,
+	.probe          = misc_sandbox_probe,
+	.priv_auto_alloc_size = sizeof(struct misc_sandbox_priv),
+};