ARM: pxa: add clk_set_rate()

Since there're mulitple clock rates in some device controllers, enable clk_set_rate() for this usage. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

ARM: pxa: add clk_set_rate()
Since there're mulitple clock rates in some device controllers, enable clk_set_rate() for this usage. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Haojian Zhuang · Eric Miao
1 parent 4e234cc0ee
Showing 4 changed files with 32 additions and 0 deletions Side-by-side Diff
arch/arm/mach-mmp/clock.c
arch/arm/mach-mmp/clock.h
arch/arm/mach-pxa/clock.c
arch/arm/mach-pxa/clock.h
@@ -88,4 +88,19 @@
 	return rate;
 }
 EXPORT_SYMBOL(clk_get_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	unsigned long flags;
+	int ret = -EINVAL;
+
+	if (clk->ops->setrate) {
+		spin_lock_irqsave(&clocks_lock, flags);
+		ret = clk->ops->setrate(clk, rate);
+		spin_unlock_irqrestore(&clocks_lock, flags);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(clk_set_rate);
@@ -12,6 +12,7 @@
 	void			(*enable)(struct clk *);
 	void			(*disable)(struct clk *);
 	unsigned long		(*getrate)(struct clk *);
+	int			(*setrate)(struct clk *, unsigned long);
 };
  
 struct clk {
@@ -53,6 +53,21 @@
 }
 EXPORT_SYMBOL(clk_get_rate);
  
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	unsigned long flags;
+	int ret = -EINVAL;
+
+	if (clk->ops->setrate) {
+		spin_lock_irqsave(&clocks_lock, flags);
+		ret = clk->ops->setrate(clk, rate);
+		spin_unlock_irqrestore(&clocks_lock, flags);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
 void clk_dummy_enable(struct clk *clk)
 {
 }
@@ -5,6 +5,7 @@
 	void			(*enable)(struct clk *);
 	void			(*disable)(struct clk *);
 	unsigned long		(*getrate)(struct clk *);
+	int			(*setrate)(struct clk *, unsigned long);
 };
  
 struct clk {
...	...	@@ -88,4 +88,19 @@
88	88	return rate;
89	89	}
90	90	EXPORT_SYMBOL(clk_get_rate);
	91	+
	92	+int clk_set_rate(struct clk *clk, unsigned long rate)
	93	+{
	94	+ unsigned long flags;
	95	+ int ret = -EINVAL;
	96	+
	97	+ if (clk->ops->setrate) {
	98	+ spin_lock_irqsave(&clocks_lock, flags);
	99	+ ret = clk->ops->setrate(clk, rate);
	100	+ spin_unlock_irqrestore(&clocks_lock, flags);
	101	+ }
	102	+
	103	+ return ret;
	104	+}
	105	+EXPORT_SYMBOL(clk_set_rate);
...	...	@@ -12,6 +12,7 @@
12	12	void (enable)(struct clk );
13	13	void (disable)(struct clk );
14	14	unsigned long (getrate)(struct clk );
	15	+ int (setrate)(struct clk , unsigned long);
15	16	};
16	17
17	18	struct clk {
...	...	@@ -53,6 +53,21 @@
53	53	}
54	54	EXPORT_SYMBOL(clk_get_rate);
55	55
	56	+int clk_set_rate(struct clk *clk, unsigned long rate)
	57	+{
	58	+ unsigned long flags;
	59	+ int ret = -EINVAL;
	60	+
	61	+ if (clk->ops->setrate) {
	62	+ spin_lock_irqsave(&clocks_lock, flags);
	63	+ ret = clk->ops->setrate(clk, rate);
	64	+ spin_unlock_irqrestore(&clocks_lock, flags);
	65	+ }
	66	+
	67	+ return ret;
	68	+}
	69	+EXPORT_SYMBOL(clk_set_rate);
	70	+
56	71	void clk_dummy_enable(struct clk *clk)
57	72	{
58	73	}
...	...	@@ -5,6 +5,7 @@
5	5	void (enable)(struct clk );
6	6	void (disable)(struct clk );
7	7	unsigned long (getrate)(struct clk );
	8	+ int (setrate)(struct clk , unsigned long);
8	9	};
9	10
10	11	struct clk {