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#include <linux/clk.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include "clk.h"
DEFINE_SPINLOCK(imx_ccm_lock);
static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name)
{
struct of_phandle_args phandle;
struct clk *clk = ERR_PTR(-ENODEV);
char *path;
path = kasprintf(GFP_KERNEL, "/clocks/%s", name);
if (!path)
return ERR_PTR(-ENOMEM);
phandle.np = of_find_node_by_path(path);
kfree(path);
if (phandle.np) {
clk = of_clk_get_from_provider(&phandle);
of_node_put(phandle.np);
}
return clk;
}
struct clk * __init imx_obtain_fixed_clock(
const char *name, unsigned long rate)
{
struct clk *clk;
clk = imx_obtain_fixed_clock_from_dt(name);
if (IS_ERR(clk))
clk = imx_clk_fixed(name, rate);
return clk;
}
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