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PM: domains: Implement the ->set_performance_state() callback for genpd

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To enable generic support for performance scaling for PM domains, let's
implement the ->set_performance_state() callback for genpd.

Beyond this change, users of the corresponding genpd specific API,
dev_pm_genpd_set_performance_state() are encouraged to switch to the common
dev_pm_domain_set_performance_state() API.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Ulf Hansson 2023-09-25 15:17:08 +02:00 committed by Viresh Kumar
parent 3fbc5c3b85
commit 401e09201a
1 changed files with 21 additions and 12 deletions
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33
drivers/base/power/domain.c
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@ -419,6 +419,25 @@ static void genpd_restore_performance_state(struct device *dev,
genpd_set_performance_state(dev, state);
}
static int genpd_dev_pm_set_performance_state(struct device *dev,
unsigned int state)
{
struct generic_pm_domain *genpd = dev_to_genpd(dev);
int ret = 0;
genpd_lock(genpd);
if (pm_runtime_suspended(dev)) {
dev_gpd_data(dev)->rpm_pstate = state;
} else {
ret = genpd_set_performance_state(dev, state);
if (!ret)
dev_gpd_data(dev)->rpm_pstate = 0;
}
genpd_unlock(genpd);
return ret;
}
/**
* dev_pm_genpd_set_performance_state- Set performance state of device's power
* domain.
@ -437,7 +456,6 @@ static void genpd_restore_performance_state(struct device *dev,
int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state)
{
struct generic_pm_domain *genpd;
int ret = 0;
genpd = dev_to_genpd_safe(dev);
if (!genpd)
@ -447,17 +465,7 @@ int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state)
!dev->power.subsys_data->domain_data))
return -EINVAL;
genpd_lock(genpd);
if (pm_runtime_suspended(dev)) {
dev_gpd_data(dev)->rpm_pstate = state;
} else {
ret = genpd_set_performance_state(dev, state);
if (!ret)
dev_gpd_data(dev)->rpm_pstate = 0;
}
genpd_unlock(genpd);
return ret;
return genpd_dev_pm_set_performance_state(dev, state);
}
EXPORT_SYMBOL_GPL(dev_pm_genpd_set_performance_state);
@ -2079,6 +2087,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
genpd->domain.ops.restore_noirq = genpd_restore_noirq;
genpd->domain.ops.complete = genpd_complete;
genpd->domain.start = genpd_dev_pm_start;
genpd->domain.set_performance_state = genpd_dev_pm_set_performance_state;
if (genpd->flags & GENPD_FLAG_PM_CLK) {
genpd->dev_ops.stop = pm_clk_suspend;