From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Date: Wed, 11 Mar 2015 10:34:25 +0000 (+0100)
Subject: clk: Expose clk_hw_reparent() to providers
X-Git-Tag: KARO-TXA5-2015-06-26~139^2~1^2~7
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f002cb771dd61ab37d60367ad560d5774e61d061;p=karo-tx-linux.git

clk: Expose clk_hw_reparent() to providers

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

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index eb0152961d3c..f7930257b33b 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 5591ea71a8d1..28abf1badb40 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)
 {