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authorBen Dooks <ben-linux@fluff.org>2009-12-01 01:24:37 +0000
committerBen Dooks <ben-linux@fluff.org>2010-01-15 17:10:10 +0900
commitb3bf41be06634d69959a68a2b53e1ffc92f0d103 (patch)
tree7575fc3d60e9a2f99e74b2862e1b3a43b7df1f92 /arch/arm/plat-samsung/include/plat/clock.h
parent13bbd88504bfa0d205fa4121322869d8d7e083d0 (diff)
ARM: SAMSUNG: Reduce size of struct clk.
Reduce the size of struct clk by 12 bytes and make defining clocks with common implementation functions easier by moving the set_rate, get_rate, round_rate and set_parent calls into a new structure called 'struct clk_ops' and using that instead. This change does make a few clocks larger as they need their own clk_ops, but this is outweighed by the number of clocks with either no ops or having a common set of ops. Update all the users of this. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/clock.h')
-rw-r--r--arch/arm/plat-samsung/include/plat/clock.h29
1 files changed, 25 insertions, 4 deletions
diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h
index d86af84b5b8..43324af24c6 100644
--- a/arch/arm/plat-samsung/include/plat/clock.h
+++ b/arch/arm/plat-samsung/include/plat/clock.h
@@ -11,6 +11,30 @@
#include <linux/spinlock.h>
+struct clk;
+
+/**
+ * struct clk_ops - standard clock operations
+ * @set_rate: set the clock rate, see clk_set_rate().
+ * @get_rate: get the clock rate, see clk_get_rate().
+ * @round_rate: round a given clock rate, see clk_round_rate().
+ * @set_parent: set the clock's parent, see clk_set_parent().
+ *
+ * Group the common clock implementations together so that we
+ * don't have to keep setting the same fiels again. We leave
+ * enable in struct clk.
+ *
+ * Adding an extra layer of indirection into the process should
+ * not be a problem as it is unlikely these operations are going
+ * to need to be called quickly.
+ */
+struct clk_ops {
+ int (*set_rate)(struct clk *c, unsigned long rate);
+ unsigned long (*get_rate)(struct clk *c);
+ unsigned long (*round_rate)(struct clk *c, unsigned long rate);
+ int (*set_parent)(struct clk *c, struct clk *parent);
+};
+
struct clk {
struct list_head list;
struct module *owner;
@@ -21,11 +45,8 @@ struct clk {
unsigned long rate;
unsigned long ctrlbit;
+ struct clk_ops *ops;
int (*enable)(struct clk *, int enable);
- int (*set_rate)(struct clk *c, unsigned long rate);
- unsigned long (*get_rate)(struct clk *c);
- unsigned long (*round_rate)(struct clk *c, unsigned long rate);
- int (*set_parent)(struct clk *c, struct clk *parent);
};
/* other clocks which may be registered by board support */