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Message-ID: <20250407131258.70638-9-bmasney@redhat.com>
Date: Mon, 7 Apr 2025 09:12:58 -0400
From: Brian Masney <bmasney@...hat.com>
To: sboyd@...nel.org,
mturquette@...libre.com
Cc: linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org,
mripard@...hat.com
Subject: [PATCH 8/8] clk: test: introduce test variation for sibling rate changes on a gate/mux
Introduce a test variation that creates a parent with two children: a
gate and a mux. Ensure that changing the rate of the gate does not
affect the rate of the mux.
Signed-off-by: Brian Masney <bmasney@...hat.com>
---
drivers/clk/clk_test.c | 46 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
index 97909caa71b2..e6df1d2274b2 100644
--- a/drivers/clk/clk_test.c
+++ b/drivers/clk/clk_test.c
@@ -942,6 +942,48 @@ clk_rate_change_sibling_div_mux_test_init(struct kunit *test)
return &ctx->clk_ctx;
}
+struct clk_rate_change_sibling_gate_mux_sibling_context {
+ struct clk_dummy_gate child1;
+ struct clk_multiple_parent_ctx child2_mux;
+ struct clk_test_rate_change_sibling_clk_ctx clk_ctx;
+};
+
+static struct clk_test_rate_change_sibling_clk_ctx *
+clk_rate_change_sibling_gate_mux_test_init(struct kunit *test)
+{
+ struct clk_rate_change_sibling_gate_mux_sibling_context *ctx;
+ int ret;
+
+ ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+ test->priv = ctx;
+
+ ret = clk_init_multiple_parent_ctx(test, &ctx->child2_mux,
+ "parent0", DUMMY_CLOCK_RATE_24_MHZ,
+ "parent1", DUMMY_CLOCK_RATE_48_MHZ,
+ "child2", CLK_SET_RATE_NO_REPARENT,
+ &clk_multiple_parents_mux_ops);
+ if (ret)
+ return ERR_PTR(ret);
+
+ ctx->child1.hw.init = CLK_HW_INIT_HW("child1",
+ &ctx->child2_mux.parents_ctx[0].hw,
+ &clk_dummy_gate_ops,
+ CLK_SET_RATE_PARENT);
+ ret = clk_hw_register_kunit(test, NULL, &ctx->child1.hw);
+ if (ret)
+ return ERR_PTR(ret);
+
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ctx->clk_ctx.parent_clk = clk_hw_get_clk(&ctx->child2_mux.parents_ctx[0].hw, NULL);
+ ctx->clk_ctx.child1_clk = clk_hw_get_clk(&ctx->child1.hw, NULL);
+ ctx->clk_ctx.child2_clk = clk_hw_get_clk(&ctx->child2_mux.hw, NULL);
+
+ return &ctx->clk_ctx;
+}
+
struct clk_test_rate_change_sibling_test_case {
const char *desc;
struct clk_test_rate_change_sibling_clk_ctx *(*init)(struct kunit *test);
@@ -956,6 +998,10 @@ static struct clk_test_rate_change_sibling_test_case clk_test_rate_change_siblin
.desc = "div_mux",
.init = clk_rate_change_sibling_div_mux_test_init,
},
+ {
+ .desc = "gate_mux",
+ .init = clk_rate_change_sibling_gate_mux_test_init,
+ },
};
KUNIT_ARRAY_PARAM_DESC(clk_test_rate_change_sibling_test_case,
--
2.49.0
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