To be used by clock implementations for switching to a new parent during
rate change.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
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 4bb2250..db89258 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 17dd6e9..b1db1cc 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);
/*
* FIXME clock api without lock protection
--
1.9.3
--
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