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authorSudeep Holla <sudeep.holla@arm.com>2023-10-06 11:40:10 +0300
committerSudeep Holla <sudeep.holla@arm.com>2023-10-06 11:40:10 +0300
commit0a30c0e9ca293a6680b1a124684cf80c142b1fa0 (patch)
tree13164e8813405e625155bd63b2d038e8c55a40e4 /drivers/base/power
parent8b6022be4c6e3e0d37c3e1378c9ff0a2c8717b09 (diff)
parent0025ff64ffcf6bd6ece5484e7818401f77bf115f (diff)
downloadlinux-0a30c0e9ca293a6680b1a124684cf80c142b1fa0.tar.xz
Merge branch 'opp/pm-domain-scmi' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm into for-next/scmi/updates
This is the merge of immutable point in PM OPP tree shared with SCMI so that the SCMI changes based on these OPP changes can be merged via the SCMI tree. * 'opp/pm-domain-scmi' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: OPP: Extend support for the opp-level beyond required-opps OPP: Switch to use dev_pm_domain_set_performance_state() OPP: Extend dev_pm_opp_data with a level OPP: Add dev_pm_opp_add_dynamic() to allow more flexibility PM: domains: Implement the ->set_performance_state() callback for genpd PM: domains: Introduce dev_pm_domain_set_performance_state()
Diffstat (limited to 'drivers/base/power')
-rw-r--r--drivers/base/power/common.c21
-rw-r--r--drivers/base/power/domain.c33
2 files changed, 42 insertions, 12 deletions
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c
index 72115917e0bd..44ec20918a4d 100644
--- a/drivers/base/power/common.c
+++ b/drivers/base/power/common.c
@@ -228,3 +228,24 @@ void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd)
device_pm_check_callbacks(dev);
}
EXPORT_SYMBOL_GPL(dev_pm_domain_set);
+
+/**
+ * dev_pm_domain_set_performance_state - Request a new performance state.
+ * @dev: The device to make the request for.
+ * @state: Target performance state for the device.
+ *
+ * This function should be called when a new performance state needs to be
+ * requested for a device that is attached to a PM domain. Note that, the
+ * support for performance scaling for PM domains is optional.
+ *
+ * Returns 0 on success and when performance scaling isn't supported, negative
+ * error code on failure.
+ */
+int dev_pm_domain_set_performance_state(struct device *dev, unsigned int state)
+{
+ if (dev->pm_domain && dev->pm_domain->set_performance_state)
+ return dev->pm_domain->set_performance_state(dev, state);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dev_pm_domain_set_performance_state);
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index c74edf80417f..da1777e39eaa 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -420,6 +420,25 @@ 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.
@@ -438,7 +457,6 @@ 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)
@@ -448,17 +466,7 @@ 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);
@@ -2080,6 +2088,7 @@ 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;