test: clk: Update tests to also check the managed API

Add a few more clocks the clk_sandbox clock provider and get them using
the managed API.
Make sure they are released when the device is removed.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

2 files changed, 91 insertions, 9 deletions

diff --git a/drivers/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c
index 1d5cbb5..d152fd7 100644
--- a/drivers/clk/clk_sandbox.c
+++ b/drivers/clk/clk_sandbox.c
@@ -12,6 +12,7 @@
 struct sandbox_clk_priv {
 	ulong rate[SANDBOX_CLK_ID_COUNT];
 	bool enabled[SANDBOX_CLK_ID_COUNT];
+	bool requested[SANDBOX_CLK_ID_COUNT];
 };
 
 static ulong sandbox_clk_get_rate(struct clk *clk)
@@ -65,11 +66,35 @@ static int sandbox_clk_disable(struct clk *clk)
 	return 0;
 }
 
+static int sandbox_clk_request(struct clk *clk)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(clk->dev);
+
+	if (clk->id >= SANDBOX_CLK_ID_COUNT)
+		return -EINVAL;
+
+	priv->requested[clk->id] = true;
+	return 0;
+}
+
+static int sandbox_clk_free(struct clk *clk)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(clk->dev);
+
+	if (clk->id >= SANDBOX_CLK_ID_COUNT)
+		return -EINVAL;
+
+	priv->requested[clk->id] = false;
+	return 0;
+}
+
 static struct clk_ops sandbox_clk_ops = {
 	.get_rate	= sandbox_clk_get_rate,
 	.set_rate	= sandbox_clk_set_rate,
 	.enable		= sandbox_clk_enable,
 	.disable	= sandbox_clk_disable,
+	.request	= sandbox_clk_request,
+	.free		= sandbox_clk_free,
 };
 
 static const struct udevice_id sandbox_clk_ids[] = {
@@ -104,3 +129,12 @@ int sandbox_clk_query_enable(struct udevice *dev, int id)
 
 	return priv->enabled[id];
 }
+
+int sandbox_clk_query_requested(struct udevice *dev, int id)
+{
+	struct sandbox_clk_priv *priv = dev_get_priv(dev);
+
+	if (id < 0 || id >= SANDBOX_CLK_ID_COUNT)
+		return -EINVAL;
+	return priv->requested[id];
+}
diff --git a/drivers/clk/clk_sandbox_test.c b/drivers/clk/clk_sandbox_test.c
index e8465db..4195466 100644
--- a/drivers/clk/clk_sandbox_test.c
+++ b/drivers/clk/clk_sandbox_test.c
@@ -9,7 +9,8 @@
 #include <asm/clk.h>
 
 struct sandbox_clk_test {
-	struct clk clks[SANDBOX_CLK_TEST_ID_COUNT];
+	struct clk clks[SANDBOX_CLK_TEST_NON_DEVM_COUNT];
+	struct clk *clkps[SANDBOX_CLK_TEST_ID_COUNT];
 	struct clk_bulk bulk;
 };
 
@@ -24,7 +25,7 @@ int sandbox_clk_test_get(struct udevice *dev)
 	struct sandbox_clk_test *sbct = dev_get_priv(dev);
 	int i, ret;
 
-	for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
+	for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
 		ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
 				      &sbct->clks[i]);
 		if (ret)
@@ -34,6 +35,37 @@ int sandbox_clk_test_get(struct udevice *dev)
 	return 0;
 }
 
+int sandbox_clk_test_devm_get(struct udevice *dev)
+{
+	struct sandbox_clk_test *sbct = dev_get_priv(dev);
+	struct clk *clk;
+
+	clk = devm_clk_get(dev, "no-an-existing-clock");
+	if (!IS_ERR(clk)) {
+		dev_err(dev, "devm_clk_get() should have failed\n");
+		return -EINVAL;
+	}
+
+	clk = devm_clk_get(dev, "uart2");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;
+
+	clk = devm_clk_get_optional(dev, "uart1");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;
+
+	sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
+	clk = devm_clk_get_optional(dev, "not_an_existing_clock");
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+	if (clk)
+		return -EINVAL;
+
+	return 0;
+}
+
 int sandbox_clk_test_get_bulk(struct udevice *dev)
 {
 	struct sandbox_clk_test *sbct = dev_get_priv(dev);
@@ -48,7 +80,7 @@ ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
 	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
 		return -EINVAL;
 
-	return clk_get_rate(&sbct->clks[id]);
+	return clk_get_rate(sbct->clkps[id]);
 }
 
 ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
@@ -58,7 +90,7 @@ ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
 	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
 		return -EINVAL;
 
-	return clk_set_rate(&sbct->clks[id], rate);
+	return clk_set_rate(sbct->clkps[id], rate);
 }
 
 int sandbox_clk_test_enable(struct udevice *dev, int id)
@@ -68,7 +100,7 @@ int sandbox_clk_test_enable(struct udevice *dev, int id)
 	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
 		return -EINVAL;
 
-	return clk_enable(&sbct->clks[id]);
+	return clk_enable(sbct->clkps[id]);
 }
 
 int sandbox_clk_test_enable_bulk(struct udevice *dev)
@@ -85,7 +117,7 @@ int sandbox_clk_test_disable(struct udevice *dev, int id)
 	if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
 		return -EINVAL;
 
-	return clk_disable(&sbct->clks[id]);
+	return clk_disable(sbct->clkps[id]);
 }
 
 int sandbox_clk_test_disable_bulk(struct udevice *dev)
@@ -100,7 +132,8 @@ int sandbox_clk_test_free(struct udevice *dev)
 	struct sandbox_clk_test *sbct = dev_get_priv(dev);
 	int i, ret;
 
-	for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
+	devm_clk_put(dev, sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1]);
+	for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
 		ret = clk_free(&sbct->clks[i]);
 		if (ret)
 			return ret;
@@ -122,13 +155,27 @@ int sandbox_clk_test_valid(struct udevice *dev)
 	int i;
 
 	for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
-		if (!clk_valid(&sbct->clks[i]))
-			return -EINVAL;
+		if (!clk_valid(sbct->clkps[i]))
+			if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
+				return -EINVAL;
 	}
 
 	return 0;
 }
 
+static int sandbox_clk_test_probe(struct udevice *dev)
+{
+	struct sandbox_clk_test *sbct = dev_get_priv(dev);
+	int i;
+
+	for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
+		sbct->clkps[i] = &sbct->clks[i];
+	for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
+		sbct->clkps[i] = NULL;
+
+	return 0;
+}
+
 static const struct udevice_id sandbox_clk_test_ids[] = {
 	{ .compatible = "sandbox,clk-test" },
 	{ }
@@ -138,5 +185,6 @@ U_BOOT_DRIVER(sandbox_clk_test) = {
 	.name = "sandbox_clk_test",
 	.id = UCLASS_MISC,
 	.of_match = sandbox_clk_test_ids,
+	.probe = sandbox_clk_test_probe,
 	.priv_auto_alloc_size = sizeof(struct sandbox_clk_test),
 };