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opp: Implement dev_pm_opp_set_opp()

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The new helper dev_pm_opp_set_opp() can be used for configuring the
devices for a particular OPP and can be used by different type of
devices, even the ones which don't change frequency (like power
domains).

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
This commit is contained in:
Viresh Kumar 2021-01-21 12:15:36 +05:30
parent 509e4777ca
commit abbe348340
2 changed files with 34 additions and 0 deletions
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28
drivers/opp/core.c
View File

@ -1136,6 +1136,34 @@ put_opp_table:
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_rate);
/**
* dev_pm_opp_set_opp() - Configure device for OPP
* @dev: device for which we do this operation
* @opp: OPP to set to
*
* This configures the device based on the properties of the OPP passed to this
* routine.
*
* Return: 0 on success, a negative error number otherwise.
*/
int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
{
struct opp_table *opp_table;
int ret;
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
dev_err(dev, "%s: device opp doesn't exist\n", __func__);
return PTR_ERR(opp_table);
}
ret = _set_opp(dev, opp_table, opp, opp ? opp->rate : 0);
dev_pm_opp_put_opp_table(opp_table);
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_opp);
/* OPP-dev Helpers */
static void _remove_opp_dev(struct opp_device *opp_dev,
struct opp_table *opp_table)

6
include/linux/pm_opp.h
View File

@ -158,6 +158,7 @@ void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
struct opp_table *devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp);
int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
@ -377,6 +378,11 @@ static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_f
return -ENOTSUPP;
}
static inline int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
{
return -ENOTSUPP;
}
static inline int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp)
{
return -EOPNOTSUPP;