linux-kernel - [PATCH RFC v4 05/12] clk: test: introduce clk_dummy

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Message-Id: <20250923-clk-tests-docs-v4-5-9205cb3d3cba@redhat.com>
Date: Tue, 23 Sep 2025 10:39:24 -0400
From: Brian Masney <bmasney@...hat.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Maxime Ripard <mripard@...nel.org>, 
 Jonathan Corbet <corbet@....net>, Russell King <linux@...linux.org.uk>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-doc@...r.kernel.org, Brian Masney <bmasney@...hat.com>
Subject: [PATCH RFC v4 05/12] clk: test: introduce clk_dummy_gate for a
 mock gate

This is used to mock up a gate in the clk kunit tests.

Reviewed-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Brian Masney <bmasney@...hat.com>
---
 drivers/clk/clk_test.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
index 1aca266f9922beb7d81124c07d21b2a3d700dc5c..e798ee0591b5db6a7728eda20dcab167245a9834 100644
--- a/drivers/clk/clk_test.c
+++ b/drivers/clk/clk_test.c
@@ -181,6 +181,40 @@ static const struct clk_ops clk_dummy_div_ops = {
 	.set_rate = clk_dummy_div_set_rate,
 };
 
+struct clk_dummy_gate {
+	struct clk_hw hw;
+	bool enabled;
+};
+
+static int clk_dummy_gate_enable(struct clk_hw *hw)
+{
+	struct clk_dummy_gate *gate = container_of(hw, struct clk_dummy_gate, hw);
+
+	gate->enabled = true;
+
+	return 0;
+}
+
+static void clk_dummy_gate_disable(struct clk_hw *hw)
+{
+	struct clk_dummy_gate *gate = container_of(hw, struct clk_dummy_gate, hw);
+
+	gate->enabled = false;
+}
+
+static int clk_dummy_gate_is_enabled(struct clk_hw *hw)
+{
+	struct clk_dummy_gate *gate = container_of(hw, struct clk_dummy_gate, hw);
+
+	return gate->enabled;
+}
+
+static const struct clk_ops clk_dummy_gate_ops = {
+	.enable = clk_dummy_gate_enable,
+	.disable = clk_dummy_gate_disable,
+	.is_enabled = clk_dummy_gate_is_enabled,
+};
+
 struct clk_multiple_parent_ctx {
 	struct clk_dummy_context parents_ctx[2];
 	struct clk_hw hw;

-- 
2.51.0