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Message-ID: <20250407131258.70638-3-bmasney@redhat.com>
Date: Mon, 7 Apr 2025 09:12:52 -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 2/8] clk: test: introduce clk_dummy_div for a mock divider
This is used to mock up a divider in the clk kunit tests.
Signed-off-by: Brian Masney <bmasney@...hat.com>
---
drivers/clk/clk_test.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
index 1b34d54ec9c6..4908fb9c0c46 100644
--- a/drivers/clk/clk_test.c
+++ b/drivers/clk/clk_test.c
@@ -140,6 +140,47 @@ static const struct clk_ops clk_dummy_single_parent_ops = {
.get_parent = clk_dummy_single_get_parent,
};
+// 4 ought to be enough for anybody
+#define CLK_DUMMY_DIV_WIDTH 4
+
+struct clk_dummy_div {
+ struct clk_hw hw;
+ unsigned int div;
+};
+
+static unsigned long clk_dummy_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_dummy_div *div = container_of(hw, struct clk_dummy_div, hw);
+
+ return divider_recalc_rate(hw, parent_rate, div->div, NULL,
+ CLK_DIVIDER_ROUND_CLOSEST, CLK_DUMMY_DIV_WIDTH);
+}
+
+static long clk_dummy_div_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ return divider_round_rate(hw, rate, parent_rate, NULL,
+ CLK_DUMMY_DIV_WIDTH, CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+static int clk_dummy_div_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_dummy_div *div = container_of(hw, struct clk_dummy_div, hw);
+
+ div->div = divider_get_val(rate, parent_rate, NULL, CLK_DUMMY_DIV_WIDTH,
+ CLK_DIVIDER_ROUND_CLOSEST);
+
+ return 0;
+}
+
+static const struct clk_ops clk_dummy_div_ops = {
+ .recalc_rate = clk_dummy_div_recalc_rate,
+ .round_rate = clk_dummy_div_round_rate,
+ .set_rate = clk_dummy_div_set_rate,
+};
+
struct clk_multiple_parent_ctx {
struct clk_dummy_context parents_ctx[2];
struct clk_hw hw;
--
2.49.0
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