sh: clkfwk: refactor rate propagation.

This resyncs the rate propagation strategy with the scheme used by the
OMAP clock framework. Child clocks are tracked on a list under each
parent and propagation happens there specifically rather than constantly
iterating over the global clock list.

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

1 files changed, 6 insertions, 3 deletions

diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h
index 241f1c1d9ce1..5dc8b73a2bd5 100644
--- a/arch/sh/include/asm/clock.h
+++ b/arch/sh/include/asm/clock.h
@@ -27,6 +27,9 @@ struct clk {
         struct clk              *parent;
         struct clk_ops          *ops;
 
+        struct list_head        children;
+        struct list_head        sibling;        /* node for children */
+
         int                     usecount;
 
         unsigned long           rate;
@@ -35,7 +38,6 @@ struct clk {
 };
 
 #define CLK_ALWAYS_ENABLED      (1 << 0)
-#define CLK_RATE_PROPAGATES     (1 << 1)
 #define CLK_NEEDS_INIT          (1 << 2)
 
 /* Should be defined by processor-specific code */
@@ -44,9 +46,10 @@ int __init arch_clk_init(void);
 
 /* arch/sh/kernel/cpu/clock.c */
 int clk_init(void);
-unsigned long followparent_recalc(struct clk *clk);
+unsigned long followparent_recalc(struct clk *);
+void recalculate_root_clocks(void);
+void propagate_rate(struct clk *);
 void clk_recalc_rate(struct clk *);
-
 int clk_register(struct clk *);
 void clk_unregister(struct clk *);