[ARM] lh7a40x: convert to simple clk API

lh7a40x only uses the clk API for the framebuffer, so there's
no point having a complicated implementation.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-lh7a40x/clocks.c

@@ -72,31 +72,15 @@ unsigned int pclkfreq_get (void)
 
 /* ----- */
 
-static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
-
 struct clk *clk_get (struct device *dev, const char *id)
 {
-	struct clk *p;
-	struct clk *clk = ERR_PTR(-ENOENT);
-
-	down (&clocks_sem);
-	list_for_each_entry (p, &clocks, node) {
-		if (strcmp (id, p->name) == 0
-		    && try_module_get(p->owner)) {
-			clk = p;
-			break;
-		}
-	}
-	up (&clocks_sem);
-
-	return clk;
+	return dev && strcmp(dev_name(dev), "cldc-lh7a40x") == 0
+		 ? NULL : ERR_PTR(-ENOENT);
 }
 EXPORT_SYMBOL(clk_get);
 
 void clk_put (struct clk *clk)
 {
-	module_put(clk->owner);
 }
 EXPORT_SYMBOL(clk_put);
 
@@ -111,20 +95,9 @@ void clk_disable (struct clk *clk)
 }
 EXPORT_SYMBOL(clk_disable);
 
-int clk_use (struct clk *clk)
-{
-	return 0;
-}
-EXPORT_SYMBOL(clk_use);
-
-void clk_unuse (struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_unuse);
-
 unsigned long clk_get_rate (struct clk *clk)
 {
-	return clk->rate;
+	return 0;
 }
 EXPORT_SYMBOL(clk_get_rate);
 
@@ -136,36 +109,6 @@ EXPORT_SYMBOL(clk_round_rate);
 
 int clk_set_rate (struct clk *clk, unsigned long rate)
 {
-	int ret = -EIO;
-	return ret;
+	return -EIO;
 }
 EXPORT_SYMBOL(clk_set_rate);
-
-static struct clk clcd_clk = {
-	.name	= "CLCDCLK",
-	.rate	= 0,
-};
-
-int clk_register (struct clk *clk)
-{
-	down (&clocks_sem);
-	list_add (&clk->node, &clocks);
-	up (&clocks_sem);
-	return 0;
-}
-EXPORT_SYMBOL(clk_register);
-
-void clk_unregister (struct clk *clk)
-{
-	down (&clocks_sem);
-	list_del (&clk->node);
-	up (&clocks_sem);
-}
-EXPORT_SYMBOL(clk_unregister);
-
-static int __init clk_init (void)
-{
-	clk_register(&clcd_clk);
-	return 0;
-}
-arch_initcall(clk_init);