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>

1 files changed, 17 insertions, 14 deletions

diff --git a/arch/arm/plat-s3c/clock.c b/arch/arm/plat-s3c/clock.c
index 619cfa82dcab..fa91125c7e0e 100644
--- a/arch/arm/plat-s3c/clock.c
+++ b/arch/arm/plat-s3c/clock.c
@@ -150,8 +150,8 @@ unsigned long clk_get_rate(struct clk *clk)
 	if (clk->rate != 0)
 		return clk->rate;
 
-	if (clk->get_rate != NULL)
-		return (clk->get_rate)(clk);
+	if (clk->ops != NULL && clk->ops->get_rate != NULL)
+		return (clk->ops->get_rate)(clk);
 
 	if (clk->parent != NULL)
 		return clk_get_rate(clk->parent);
@@ -161,8 +161,8 @@ unsigned long clk_get_rate(struct clk *clk)
 
 long clk_round_rate(struct clk *clk, unsigned long rate)
 {
-	if (!IS_ERR(clk) && clk->round_rate)
-		return (clk->round_rate)(clk, rate);
+	if (!IS_ERR(clk) && clk->ops && clk->ops->round_rate)
+		return (clk->ops->round_rate)(clk, rate);
 
 	return rate;
 }
@@ -178,13 +178,14 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
 	 * the clock may have been made this way by choice.
 	 */
 
-	WARN_ON(clk->set_rate == NULL);
+	WARN_ON(clk->ops == NULL);
+	WARN_ON(clk->ops && clk->ops->set_rate == NULL);
 
-	if (clk->set_rate == NULL)
+	if (clk->ops == NULL || clk->ops->set_rate == NULL)
 		return -EINVAL;
 
 	spin_lock(&clocks_lock);
-	ret = (clk->set_rate)(clk, rate);
+	ret = (clk->ops->set_rate)(clk, rate);
 	spin_unlock(&clocks_lock);
 
 	return ret;
@@ -204,8 +205,8 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
 
 	spin_lock(&clocks_lock);
 
-	if (clk->set_parent)
-		ret = (clk->set_parent)(clk, parent);
+	if (clk->ops && clk->ops->set_parent)
+		ret = (clk->ops->set_parent)(clk, parent);
 
 	spin_unlock(&clocks_lock);
 
@@ -230,6 +231,10 @@ static int clk_default_setrate(struct clk *clk, unsigned long rate)
 	return 0;
 }
 
+static struct clk_ops clk_ops_def_setrate = {
+	.set_rate	= clk_default_setrate,
+};
+
 struct clk clk_xtal = {
 	.name		= "xtal",
 	.id		= -1,
@@ -251,7 +256,7 @@ struct clk clk_epll = {
 struct clk clk_mpll = {
 	.name		= "mpll",
 	.id		= -1,
-	.set_rate	= clk_default_setrate,
+	.ops		= &clk_ops_def_setrate,
 };
 
 struct clk clk_upll = {
@@ -267,7 +272,6 @@ struct clk clk_f = {
 	.rate		= 0,
 	.parent		= &clk_mpll,
 	.ctrlbit	= 0,
-	.set_rate	= clk_default_setrate,
 };
 
 struct clk clk_h = {
@@ -276,7 +280,7 @@ struct clk clk_h = {
 	.rate		= 0,
 	.parent		= NULL,
 	.ctrlbit	= 0,
-	.set_rate	= clk_default_setrate,
+	.ops		= &clk_ops_def_setrate,
 };
 
 struct clk clk_p = {
@@ -285,7 +289,7 @@ struct clk clk_p = {
 	.rate		= 0,
 	.parent		= NULL,
 	.ctrlbit	= 0,
-	.set_rate	= clk_default_setrate,
+	.ops		= &clk_ops_def_setrate,
 };
 
 struct clk clk_usb_bus = {
@@ -296,7 +300,6 @@ struct clk clk_usb_bus = {
 };
 
 
-
 struct clk s3c24xx_uclk = {
 	.name		= "uclk",
 	.id		= -1,