[PATCH v8 12/18] clk: Expose clk_hw_reparent to providers

Tomeu Vizoso
2015-03-12T14:50:47Z

To be used by clock implementations for switching to a new parent during
rate change.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/clk/clk.c | 8 ++++++++
include/linux/clk-provider.h | 1 +
2 files changed, 9 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index eb01529..f793025 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1968,6 +1968,14 @@ static void clk_core_reparent(struct clk_core *clk,
__clk_recalc_rates(clk, POST_RATE_CHANGE);
}

+void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent)
+{
+ if (!hw)
+ return;
+
+ clk_core_reparent(hw->core, !new_parent ? NULL : new_parent->core);
+}
+
/**
* clk_has_parent - check if a clock is a possible parent for another
* @clk: clock source
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 5591ea7..28abf1b 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -589,6 +589,7 @@ long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
unsigned long max_rate,
unsigned long *best_parent_rate,
struct clk_hw **best_parent_p);
+void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent);

static inline void __clk_hw_set_clk(struct clk_hw *dst, struct clk_hw *src)
{
--
2.1.0