dm: test: Add tests for the clk uclass

Add tests of each API call using a sandbox clock device.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 86 insertions, 0 deletions

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index b51cf23850..bb89fb918b 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -6,3 +6,4 @@
 #
 
 obj-$(CONFIG_CLK) += clk-uclass.o
+obj-$(CONFIG_SANDBOX) += clk_sandbox.o
diff --git a/drivers/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c
new file mode 100644
index 0000000000..058225a766
--- /dev/null
+++ b/drivers/clk/clk_sandbox.c
@@ -0,0 +1,85 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/test.h>
+
+struct sandbox_clk_priv {
+	ulong rate;
+	ulong periph_rate[PERIPH_ID_COUNT];
+};
+
+static ulong sandbox_clk_get_rate(struct udevice *dev)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+
+	return priv->rate;
+}
+
+static ulong sandbox_clk_set_rate(struct udevice *dev, ulong rate)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+
+	if (!rate)
+		return -EINVAL;
+	priv->rate = rate;
+	return 0;
+}
+
+ulong sandbox_get_periph_rate(struct udevice *dev, int periph)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+
+	if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
+		return -EINVAL;
+	return priv->periph_rate[periph];
+}
+
+ulong sandbox_set_periph_rate(struct udevice *dev, int periph, ulong rate)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+	ulong old_rate;
+
+	if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
+		return -EINVAL;
+	old_rate = priv->periph_rate[periph];
+	priv->periph_rate[periph] = rate;
+
+	return old_rate;
+}
+
+static int sandbox_clk_probe(struct udevice *dev)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+
+	priv->rate = SANDBOX_CLK_RATE;
+
+	return 0;
+}
+
+static struct clk_ops sandbox_clk_ops = {
+	.get_rate	= sandbox_clk_get_rate,
+	.set_rate	= sandbox_clk_set_rate,
+	.get_periph_rate = sandbox_get_periph_rate,
+	.set_periph_rate = sandbox_set_periph_rate,
+};
+
+static const struct udevice_id sandbox_clk_ids[] = {
+	{ .compatible = "sandbox,clk" },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_sandbox) = {
+	.name		= "clk_sandbox",
+	.id		= UCLASS_CLK,
+	.of_match	= sandbox_clk_ids,
+	.ops		= &sandbox_clk_ops,
+	.priv_auto_alloc_size = sizeof(struct sandbox_clk_priv),
+	.probe		= sandbox_clk_probe,
+};