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clk: of: helper for determining number of parent clocks

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Walks the "clocks" array of parent clock phandles and returns the
number.

Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Mike Turquette 2013-10-07 23:12:13 -07:00
parent f8fe36f608
commit f61027426a
2 changed files with 7 additions and 0 deletions
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6
drivers/clk/clk.c
View File

@ -2202,6 +2202,12 @@ struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec)
return clk;
}
int of_clk_get_parent_count(struct device_node *np)
{
return of_count_phandle_with_args(np, "clocks", "#clock-cells");
}
EXPORT_SYMBOL_GPL(of_clk_get_parent_count);
const char *of_clk_get_parent_name(struct device_node *np, int index)
{
struct of_phandle_args clkspec;

1
include/linux/clk-provider.h
View File

@ -472,6 +472,7 @@ void of_clk_del_provider(struct device_node *np);
struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec,
void *data);
struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data);
int of_clk_get_parent_count(struct device_node *np);
const char *of_clk_get_parent_name(struct device_node *np, int index);
void of_clk_init(const struct of_device_id *matches);