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interconnect: Add devm_of_icc_get() as exported API for users

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Users can use devm version of of_icc_get() to benefit from automatic
resource release.

Signed-off-by: Akash Asthana <akashast@codeaurora.org>
Reviewed by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1586946198-13912-2-git-send-email-akashast@codeaurora.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
This commit is contained in:
Akash Asthana 2020-04-15 15:53:10 +05:30 committed by Georgi Djakov
parent 6a8b55ed40
commit e145d9a184
2 changed files with 32 additions and 0 deletions
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25
drivers/interconnect/core.c
View File

@ -350,6 +350,31 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec)
return node;
}
static void devm_icc_release(struct device *dev, void *res)
{
icc_put(*(struct icc_path **)res);
}
struct icc_path *devm_of_icc_get(struct device *dev, const char *name)
{
struct icc_path **ptr, *path;
ptr = devres_alloc(devm_icc_release, sizeof(**ptr), GFP_KERNEL);
if (!ptr)
return ERR_PTR(-ENOMEM);
path = of_icc_get(dev, name);
if (!IS_ERR(path)) {
*ptr = path;
devres_add(dev, ptr);
} else {
devres_free(ptr);
}
return path;
}
EXPORT_SYMBOL_GPL(devm_of_icc_get);
/**
* of_icc_get() - get a path handle from a DT node based on name
* @dev: device pointer for the consumer device

7
include/linux/interconnect.h
View File

@ -28,6 +28,7 @@ struct device;
struct icc_path *icc_get(struct device *dev, const int src_id,
const int dst_id);
struct icc_path *of_icc_get(struct device *dev, const char *name);
struct icc_path *devm_of_icc_get(struct device *dev, const char *name);
void icc_put(struct icc_path *path);
int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw);
void icc_set_tag(struct icc_path *path, u32 tag);
@ -46,6 +47,12 @@ static inline struct icc_path *of_icc_get(struct device *dev,
return NULL;
}
static inline struct icc_path *devm_of_icc_get(struct device *dev,
const char *name)
{
return NULL;
}
static inline void icc_put(struct icc_path *path)
{
}