In order to reset the range on a clock, we need to call
clk_set_rate_range with a minimum of 0 and a maximum of ULONG_MAX. Since
it's fairly inconvenient, let's introduce a clk_drop_range() function
that will do just this.
Suggested-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/clk/clk-rate-test.c | 4 ++--
include/linux/clk.h | 11 +++++++++++
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/clk-rate-test.c b/drivers/clk/clk-rate-test.c
index baf0ea315322..9beed87f663c 100644
--- a/drivers/clk/clk-rate-test.c
+++ b/drivers/clk/clk-rate-test.c
@@ -458,7 +458,7 @@ static void clk_rate_range_test_multiple_set_range_rate_maximized(struct kunit *
KUNIT_ASSERT_TRUE(test, rate > 0);
KUNIT_ASSERT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
- ret = clk_set_rate_range(user2, 0, ULONG_MAX);
+ ret = clk_drop_range(user2);
KUNIT_ASSERT_EQ(test, ret, 0);
rate = clk_get_rate(clk);
@@ -570,7 +570,7 @@ static void clk_rate_range_test_multiple_set_range_rate_minimized(struct kunit *
KUNIT_ASSERT_TRUE(test, rate > 0);
KUNIT_ASSERT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
- ret = clk_set_rate_range(user2, 0, ULONG_MAX);
+ ret = clk_drop_range(user2);
KUNIT_ASSERT_EQ(test, ret, 0);
rate = clk_get_rate(clk);
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 266e8de3cb51..f365dac7be17 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -1005,6 +1005,17 @@ static inline struct clk *clk_get_optional(struct device *dev, const char *id)
return clk;
}
+/**
+ * clk_drop_range - Reset any range set on that clock
+ * @clk: clock source
+ *
+ * Returns success (0) or negative errno.
+ */
+static inline int clk_drop_range(struct clk *clk)
+{
+ return clk_set_rate_range(clk, 0, ULONG_MAX);
+}
+
#if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
struct clk *of_clk_get(struct device_node *np, int index);
struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
--
2.34.1
