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PM / devfreq: Add devfreq_get_devfreq_by_node function

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Split off part of devfreq_get_devfreq_by_phandle into a separate
function. This allows callers to fetch devfreq instances by enumerating
devicetree instead of explicit phandles.

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
[cw00.choi: Export devfreq_get_devfreq_by_node function and
 add function to devfreq.h when CONFIG_PM_DEVFREQ is enabled.]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Leonard Crestez 2020-09-08 19:24:45 +09:00 • committed by Chanwoo Choi
parent a1b8638ba1
commit 7b38b7b042
2 changed files with 41 additions and 11 deletions
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6
include/linux/devfreq.h
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@ -261,6 +261,7 @@ void devm_devfreq_unregister_notifier(struct device *dev,
struct devfreq *devfreq,
struct notifier_block *nb,
unsigned int list);
struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node);
struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev, int index);
#if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND)
@ -414,6 +415,11 @@ static inline void devm_devfreq_unregister_notifier(struct device *dev,
{
}
static inline struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node)
{
return ERR_PTR(-ENODEV);
}
static inline struct devfreq *devfreq_get_devfreq_by_phandle(struct device *dev,
int index)
{