OMAP: Add clk_get_parent() for OMAP2/3

This makes clk_get_parent() work on OMAP2/3.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/clock.c

@@ -872,6 +872,11 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
 	return 0;
 }
 
+struct clk *omap2_clk_get_parent(struct clk *clk)
+{
+	return clk->parent;
+}
+
 /* DPLL rate rounding code */
 
 /**

arch/arm/mach-omap2/clock.h

@@ -29,6 +29,7 @@ int omap2_clk_set_rate(struct clk *clk, unsigned long rate);
 int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent);
 int omap2_dpll_set_rate_tolerance(struct clk *clk, unsigned int tolerance);
 long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate);
+struct clk *omap2_clk_get_parent(struct clk *clk);
 
 #ifdef CONFIG_OMAP_RESET_CLOCKS
 void omap2_clk_disable_unused(struct clk *clk);

arch/arm/mach-omap2/clock24xx.c

@@ -416,6 +416,7 @@ static struct clk_functions omap2_clk_functions = {
 	.clk_round_rate		= omap2_clk_round_rate,
 	.clk_set_rate		= omap2_clk_set_rate,
 	.clk_set_parent		= omap2_clk_set_parent,
+	.clk_get_parent		= omap2_clk_get_parent,
 	.clk_disable_unused	= omap2_clk_disable_unused,
 #ifdef	CONFIG_CPU_FREQ
 	.clk_init_cpufreq_table	= omap2_clk_init_cpufreq_table,

arch/arm/mach-omap2/clock34xx.c

@@ -630,6 +630,7 @@ static struct clk_functions omap2_clk_functions = {
 	.clk_round_rate		= omap2_clk_round_rate,
 	.clk_set_rate		= omap2_clk_set_rate,
 	.clk_set_parent		= omap2_clk_set_parent,
+	.clk_get_parent		= omap2_clk_get_parent,
 	.clk_disable_unused	= omap2_clk_disable_unused,
 };