linux-kernel - [PATCH 1/3] clk: test: Add test managed of_clk_add_hw

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Message-ID: <20240822002433.1163814-2-sboyd@kernel.org>
Date: Wed, 21 Aug 2024 17:24:28 -0700
From: Stephen Boyd <sboyd@...nel.org>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	patches@...ts.linux.dev,
	kunit-dev@...glegroups.com,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	David Gow <davidgow@...gle.com>,
	Rae Moar <rmoar@...gle.com>,
	Peng Fan <peng.fan@....com>
Subject: [PATCH 1/3] clk: test: Add test managed of_clk_add_hw_provider()

Add a test managed version of of_clk_add_hw_provider() that
automatically unregisters the clk_hw provider upon test conclusion.

Cc: Brendan Higgins <brendan.higgins@...ux.dev>
Cc: David Gow <davidgow@...gle.com>
Cc: Rae Moar <rmoar@...gle.com>
Cc: Peng Fan <peng.fan@....com>
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/clk/clk_kunit_helpers.c | 30 ++++++++++++++++++++++++++++++
 include/kunit/clk.h             |  4 ++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/clk/clk_kunit_helpers.c b/drivers/clk/clk_kunit_helpers.c
index 52fd25594c96..68a28e70bb61 100644
--- a/drivers/clk/clk_kunit_helpers.c
+++ b/drivers/clk/clk_kunit_helpers.c
@@ -203,5 +203,35 @@ int of_clk_hw_register_kunit(struct kunit *test, struct device_node *node, struc
 }
 EXPORT_SYMBOL_GPL(of_clk_hw_register_kunit);
 
+KUNIT_DEFINE_ACTION_WRAPPER(of_clk_del_provider_wrapper,
+			    of_clk_del_provider, struct device_node *);
+
+/**
+ * of_clk_add_hw_provider_kunit() - Test managed of_clk_add_hw_provider()
+ * @test: The test context
+ * @np: Device node pointer associated with clock provider
+ * @get: Callback for decoding clk_hw
+ * @data: Context pointer for @get callback.
+ *
+ * Just like of_clk_add_hw_provider(), except the clk_hw provider is managed by
+ * the test case and is automatically unregistered after the test case
+ * concludes.
+ *
+ * Return: 0 on success or a negative errno value on failure.
+ */
+int of_clk_add_hw_provider_kunit(struct kunit *test, struct device_node *np,
+				 struct clk_hw *(*get)(struct of_phandle_args *clkspec, void *data),
+				 void *data)
+{
+	int ret;
+
+	ret = of_clk_add_hw_provider(np, get, data);
+	if (ret)
+		return ret;
+
+	return kunit_add_action_or_reset(test, of_clk_del_provider_wrapper, np);
+}
+EXPORT_SYMBOL_GPL(of_clk_add_hw_provider_kunit);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("KUnit helpers for clk providers and consumers");
diff --git a/include/kunit/clk.h b/include/kunit/clk.h
index 73bc99cefe7b..0afae7688157 100644
--- a/include/kunit/clk.h
+++ b/include/kunit/clk.h
@@ -25,4 +25,8 @@ int clk_hw_register_kunit(struct kunit *test, struct device *dev, struct clk_hw
 int of_clk_hw_register_kunit(struct kunit *test, struct device_node *node,
 			     struct clk_hw *hw);
 
+int of_clk_add_hw_provider_kunit(struct kunit *test, struct device_node *np,
+				 struct clk_hw *(*get)(struct of_phandle_args *clkspec, void *data),
+				 void *data);
+
 #endif
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git