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/* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
*/ | ||
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#include <linux/clk.h> | ||
#include <linux/device.h> | ||
#include <linux/export.h> | ||
#include <linux/gfp.h> | ||
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static void devm_clk_release(struct device *dev, void *res) | ||
{ | ||
clk_put(*(struct clk **)res); | ||
} | ||
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struct clk *devm_clk_get(struct device *dev, const char *id) | ||
{ | ||
struct clk **ptr, *clk; | ||
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ptr = devres_alloc(devm_clk_release, sizeof(*ptr), GFP_KERNEL); | ||
if (!ptr) | ||
return ERR_PTR(-ENOMEM); | ||
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clk = clk_get(dev, id); | ||
if (!IS_ERR(clk)) { | ||
*ptr = clk; | ||
devres_add(dev, ptr); | ||
} else { | ||
devres_free(ptr); | ||
} | ||
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return clk; | ||
} | ||
EXPORT_SYMBOL(devm_clk_get); | ||
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static int devm_clk_match(struct device *dev, void *res, void *data) | ||
{ | ||
struct clk **c = res; | ||
if (!c || !*c) { | ||
WARN_ON(!c || !*c); | ||
return 0; | ||
} | ||
return *c == data; | ||
} | ||
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void devm_clk_put(struct device *dev, struct clk *clk) | ||
{ | ||
int ret; | ||
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ret = devres_release(dev, devm_clk_release, devm_clk_match, clk); | ||
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WARN_ON(ret); | ||
} | ||
EXPORT_SYMBOL(devm_clk_put); |
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