sh: clkfwk: Add a followparent_recalc() helper.

This adds a followparent_recalc() helper for clocks that just follow the
parent's rate. Switch over the few CPUs that use this scheme for some of
their clocks.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/clock.h

@@ -44,7 +44,7 @@ int __init arch_clk_init(void);
 
 /* arch/sh/kernel/cpu/clock.c */
 int clk_init(void);
-
+unsigned long followparent_recalc(struct clk *clk);
 void clk_recalc_rate(struct clk *);
 
 int clk_register(struct clk *);

arch/sh/kernel/cpu/clock.c

@@ -90,6 +90,12 @@ static void propagate_rate(struct clk *clk)
 	}
 }
 
+/* Used for clocks that always have same value as the parent clock */
+unsigned long followparent_recalc(struct clk *clk)
+{
+	return clk->parent->rate;
+}
+
 static void __clk_init(struct clk *clk)
 {
 	/*

arch/sh/kernel/cpu/sh2/clock-sh7619.c

@@ -57,13 +57,8 @@ static struct clk_ops sh7619_bus_clk_ops = {
 	.recalc		= bus_clk_recalc,
 };
 
-static unsigned long cpu_clk_recalc(struct clk *clk)
-{
-	return clk->parent->rate;
-}
-
 static struct clk_ops sh7619_cpu_clk_ops = {
-	.recalc		= cpu_clk_recalc,
+	.recalc		= followparent_recalc,
 };
 
 static struct clk_ops *sh7619_clk_ops[] = {

arch/sh/kernel/cpu/sh2a/clock-sh7203.c

@@ -66,13 +66,8 @@ static struct clk_ops sh7203_bus_clk_ops = {
 	.recalc		= bus_clk_recalc,
 };
 
-static unsigned long cpu_clk_recalc(struct clk *clk)
-{
-	return clk->parent->rate;
-}
-
 static struct clk_ops sh7203_cpu_clk_ops = {
-	.recalc		= cpu_clk_recalc,
+	.recalc		= followparent_recalc,
 };
 
 static struct clk_ops *sh7203_clk_ops[] = {

arch/sh/kernel/cpu/sh4a/clock-sh7722.c

@@ -646,15 +646,10 @@ static void sh7722_mstpcr_disable(struct clk *clk)
 	sh7722_mstpcr_start_stop(clk, 0);
 }
 
-static unsigned long sh7722_mstpcr_recalc(struct clk *clk)
-{
-	return clk->parent->rate;
-}
-
 static struct clk_ops sh7722_mstpcr_clk_ops = {
 	.enable = sh7722_mstpcr_enable,
 	.disable = sh7722_mstpcr_disable,
-	.recalc = sh7722_mstpcr_recalc,
+	.recalc = followparent_recalc,
 };
 
 #define MSTPCR(_name, _parent, regnr, bitnr) \

arch/sh/kernel/cpu/sh4a/clock-sh7763.c

@@ -49,13 +49,8 @@ static struct clk_ops sh7763_bus_clk_ops = {
 	.recalc		= bus_clk_recalc,
 };
 
-static unsigned long cpu_clk_recalc(struct clk *clk)
-{
-	return clk->parent->rate;
-}
-
 static struct clk_ops sh7763_cpu_clk_ops = {
-	.recalc		= cpu_clk_recalc,
+	.recalc		= followparent_recalc,
 };
 
 static struct clk_ops *sh7763_clk_ops[] = {