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PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API 

Rename _of_get_opp_desc_node to dev_pm_opp_of_get_opp_desc_node and add it
to include/linux/pm_opp.h to allow other drivers, such as platform OPP
and cpufreq drivers, to make use of it.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dave Gerlach 2017-02-03 11:29:26 -06:00 committed by Rafael J. Wysocki
parent 6ac4239733
commit 0764c604c8
2 changed files with 11 additions and 4 deletions
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9
drivers/base/power/opp/of.c
View File

@ -243,7 +243,7 @@ void dev_pm_opp_of_remove_table(struct device *dev)
EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table); EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
/* Returns opp descriptor node for a device, caller must do of_node_put() */ /* Returns opp descriptor node for a device, caller must do of_node_put() */
static struct device_node *_of_get_opp_desc_node(struct device *dev) struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
{ {
/* /*
* There should be only ONE phandle present in "operating-points-v2" * There should be only ONE phandle present in "operating-points-v2"
@ -252,6 +252,7 @@ static struct device_node *_of_get_opp_desc_node(struct device *dev)
return of_parse_phandle(dev->of_node, "operating-points-v2", 0); return of_parse_phandle(dev->of_node, "operating-points-v2", 0);
} }
EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_opp_desc_node);
/** /**
* _opp_add_static_v2() - Allocate static OPPs (As per 'v2' DT bindings) * _opp_add_static_v2() - Allocate static OPPs (As per 'v2' DT bindings)
@ -478,7 +479,7 @@ int dev_pm_opp_of_add_table(struct device *dev)
* OPPs have two version of bindings now. The older one is deprecated, * OPPs have two version of bindings now. The older one is deprecated,
* try for the new binding first. * try for the new binding first.
*/ */
opp_np = _of_get_opp_desc_node(dev); opp_np = dev_pm_opp_of_get_opp_desc_node(dev);
if (!opp_np) { if (!opp_np) {
/* /*
* Try old-deprecated bindings for backward compatibility with * Try old-deprecated bindings for backward compatibility with
@ -570,7 +571,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
int cpu, ret = 0; int cpu, ret = 0;
/* Get OPP descriptor node */ /* Get OPP descriptor node */
np = _of_get_opp_desc_node(cpu_dev); np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
if (!np) { if (!np) {
dev_dbg(cpu_dev, "%s: Couldn't find opp node.\n", __func__); dev_dbg(cpu_dev, "%s: Couldn't find opp node.\n", __func__);
return -ENOENT; return -ENOENT;
@ -595,7 +596,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
} }
/* Get OPP descriptor node */ /* Get OPP descriptor node */
tmp_np = _of_get_opp_desc_node(tcpu_dev); tmp_np = dev_pm_opp_of_get_opp_desc_node(tcpu_dev);
if (!tmp_np) { if (!tmp_np) {
dev_err(tcpu_dev, "%s: Couldn't find opp node.\n", dev_err(tcpu_dev, "%s: Couldn't find opp node.\n",
__func__); __func__);

6
include/linux/pm_opp.h
View File

@ -288,6 +288,7 @@ void dev_pm_opp_of_remove_table(struct device *dev);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask); int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask); void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
#else #else
static inline int dev_pm_opp_of_add_table(struct device *dev) static inline int dev_pm_opp_of_add_table(struct device *dev)
{ {
@ -311,6 +312,11 @@ static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct
{ {
return -ENOTSUPP; return -ENOTSUPP;
} }
static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
{
return NULL;
}
#endif #endif
#endif /* __LINUX_OPP_H__ */ #endif /* __LINUX_OPP_H__ */