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>
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index b51cf23..bb89fb9 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 0000000..058225a
--- /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,
+};