Commit 5fedd0af authored by Ian Molton's avatar Ian Molton
Browse files

[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: default avatarIan Molton <spyro@f2s.com>
parent 67a6e80e

arch/arm/mach-pxa/clock.c

+25 −0
Original line number Diff line number Diff line
@@ -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;

}

arch/arm/mach-pxa/clock.h

+5 −0
Original line number Diff line number Diff line 
#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);