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authorIan Molton <spyro@f2s.com>2008-07-25 12:02:31 +0100
committerIan Molton <spyro@f2s.com>2008-08-12 12:54:30 +0100
commit5fedd0afd661cf2d387a6eb1b0df78ddbc0c9086 (patch)
treebd9055f838a9cd90fed0a19f226d51e5e2519232
parent67a6e80ede815224db22518cd08350277bbeddb9 (diff)
[ARM] clocklib: Allow dynamic alias creation
This patch allows dynamic creation of clock aliases in order to make it possible to have platform independent clock names for use in device drivers. Signed-off-by: Ian Molton <spyro@f2s.com>
-rw-r--r--arch/arm/mach-pxa/clock.c25
-rw-r--r--arch/arm/mach-pxa/clock.h5
2 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c
index c01eea88f78..ca8e2053815 100644
--- a/arch/arm/mach-pxa/clock.c
+++ b/arch/arm/mach-pxa/clock.c
@@ -125,3 +125,28 @@ void clks_register(struct clk *clks, size_t num)
list_add(&clks[i].node, &clocks);
mutex_unlock(&clocks_mutex);
}
+
+int clk_add_alias(char *alias, struct device *alias_dev, char *id,
+ struct device *dev)
+{
+ struct clk *r = clk_lookup(dev, id);
+ struct clk *new;
+
+ if (!r)
+ return -ENODEV;
+
+ new = kzalloc(sizeof(struct clk), GFP_KERNEL);
+
+ if (!new)
+ return -ENOMEM;
+
+ new->name = alias;
+ new->dev = alias_dev;
+ new->other = r;
+
+ mutex_lock(&clocks_mutex);
+ list_add(&new->node, &clocks);
+ mutex_unlock(&clocks_mutex);
+
+ return 0;
+}
diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
index 1ec8f9178aa..73be795fe3b 100644
--- a/arch/arm/mach-pxa/clock.h
+++ b/arch/arm/mach-pxa/clock.h
@@ -1,3 +1,5 @@
+#include <linux/list.h>
+
struct clk;
struct clkops {
@@ -86,3 +88,6 @@ extern void clk_pxa3xx_cken_disable(struct clk *);
#endif
void clks_register(struct clk *clks, size_t num);
+int clk_add_alias(char *alias, struct device *alias_dev, char *id,
+ struct device *dev);
+