reset: implement a reset test

This adds a sandbox reset implementation (provider), a test client
device, instantiates them both from Sandbox's DT, and adds a DM test
that excercises everything.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/reset/sandbox-reset-test.c b/drivers/reset/sandbox-reset-test.c
new file mode 100644
index 0000000..e37d6c9
--- /dev/null
+++ b/drivers/reset/sandbox-reset-test.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2016, NVIDIA CORPORATION.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <asm/reset.h>
+
+struct sandbox_reset_test {
+	struct reset_ctl ctl;
+};
+
+int sandbox_reset_test_get(struct udevice *dev)
+{
+	struct sandbox_reset_test *sbrt = dev_get_priv(dev);
+
+	return reset_get_by_name(dev, "test", &sbrt->ctl);
+}
+
+int sandbox_reset_test_assert(struct udevice *dev)
+{
+	struct sandbox_reset_test *sbrt = dev_get_priv(dev);
+
+	return reset_assert(&sbrt->ctl);
+}
+
+int sandbox_reset_test_deassert(struct udevice *dev)
+{
+	struct sandbox_reset_test *sbrt = dev_get_priv(dev);
+
+	return reset_deassert(&sbrt->ctl);
+}
+
+int sandbox_reset_test_free(struct udevice *dev)
+{
+	struct sandbox_reset_test *sbrt = dev_get_priv(dev);
+
+	return reset_free(&sbrt->ctl);
+}
+
+static const struct udevice_id sandbox_reset_test_ids[] = {
+	{ .compatible = "sandbox,reset-ctl-test" },
+	{ }
+};
+
+U_BOOT_DRIVER(sandbox_reset_test) = {
+	.name = "sandbox_reset_test",
+	.id = UCLASS_MISC,
+	.of_match = sandbox_reset_test_ids,
+	.priv_auto_alloc_size = sizeof(struct sandbox_reset_test),
+};