diff options
| -rw-r--r-- | drivers/base/power/domain.c | 48 | ||||
| -rw-r--r-- | drivers/opp/of.c | 44 | ||||
| -rw-r--r-- | include/linux/pm_domain.h | 9 | ||||
| -rw-r--r-- | include/linux/pm_opp.h | 5 |
4 files changed, 49 insertions, 57 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 7be8c94c6b7f..8e554e6a82a2 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2552,54 +2552,6 @@ unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev, } EXPORT_SYMBOL_GPL(pm_genpd_opp_to_performance_state); -/** - * of_genpd_opp_to_performance_state- Gets performance state of device's - * power domain corresponding to a DT node's "required-opps" property. - * - * @dev: Device for which the performance-state needs to be found. - * @np: DT node where the "required-opps" property is present. This can be - * the device node itself (if it doesn't have an OPP table) or a node - * within the OPP table of a device (if device has an OPP table). - * - * Returns performance state corresponding to the "required-opps" property of - * a DT node. This calls platform specific genpd->opp_to_performance_state() - * callback to translate power domain OPP to performance state. - * - * Returns performance state on success and 0 on failure. - */ -unsigned int of_genpd_opp_to_performance_state(struct device *dev, - struct device_node *np) -{ - struct generic_pm_domain *genpd; - struct dev_pm_opp *opp; - int state = 0; - - genpd = dev_to_genpd(dev); - if (IS_ERR(genpd)) - return 0; - - if (unlikely(!genpd->set_performance_state)) - return 0; - - genpd_lock(genpd); - - opp = of_dev_pm_opp_find_required_opp(&genpd->dev, np); - if (IS_ERR(opp)) { - dev_err(dev, "Failed to find required OPP: %ld\n", - PTR_ERR(opp)); - goto unlock; - } - - state = genpd->opp_to_performance_state(genpd, opp); - dev_pm_opp_put(opp); - -unlock: - genpd_unlock(genpd); - - return state; -} -EXPORT_SYMBOL_GPL(of_genpd_opp_to_performance_state); - static int __init genpd_bus_init(void) { return bus_register(&genpd_bus_type); diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 4e494720ac25..369d63a58ac4 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -970,6 +970,50 @@ put_cpu_node: EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_sharing_cpus); /** + * of_get_required_opp_performance_state() - Search for required OPP and return its performance state. + * @np: Node that contains the "required-opps" property. + * @index: Index of the phandle to parse. + * + * Returns the performance state of the OPP pointed out by the "required-opps" + * property at @index in @np. + * + * Return: Positive performance state on success, otherwise 0 on errors. + */ +unsigned int of_get_required_opp_performance_state(struct device_node *np, + int index) +{ + struct dev_pm_opp *opp; + struct device_node *required_np; + struct opp_table *opp_table; + unsigned int pstate = 0; + + required_np = of_parse_required_opp(np, index); + if (!required_np) + return 0; + + opp_table = _find_table_of_opp_np(required_np); + if (IS_ERR(opp_table)) { + pr_err("%s: Failed to find required OPP table %pOF: %ld\n", + __func__, np, PTR_ERR(opp_table)); + goto put_required_np; + } + + opp = _find_opp_of_np(opp_table, required_np); + if (opp) { + pstate = opp->pstate; + dev_pm_opp_put(opp); + } + + dev_pm_opp_put_opp_table(opp_table); + +put_required_np: + of_node_put(required_np); + + return pstate; +} +EXPORT_SYMBOL_GPL(of_get_required_opp_performance_state); + +/** * of_dev_pm_opp_find_required_opp() - Search for required OPP. * @dev: The device whose OPP node is referenced by the 'np' DT node. * @np: Node that contains the "required-opps" property. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 4f803f934308..642036952553 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -260,8 +260,6 @@ int of_genpd_parse_idle_states(struct device_node *dn, struct genpd_power_state **states, int *n); unsigned int pm_genpd_opp_to_performance_state(struct device *genpd_dev, struct dev_pm_opp *opp); -unsigned int of_genpd_opp_to_performance_state(struct device *dev, - struct device_node *np); int genpd_dev_pm_attach(struct device *dev); struct device *genpd_dev_pm_attach_by_id(struct device *dev, @@ -308,13 +306,6 @@ pm_genpd_opp_to_performance_state(struct device *genpd_dev, return 0; } -static inline unsigned int -of_genpd_opp_to_performance_state(struct device *dev, - struct device_node *np) -{ - return 0; -} - static inline int genpd_dev_pm_attach(struct device *dev) { return 0; diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 8fed222c089b..889bb347fbd9 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -315,6 +315,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpuma struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev); struct dev_pm_opp *of_dev_pm_opp_find_required_opp(struct device *dev, struct device_node *np); struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp); +unsigned int of_get_required_opp_performance_state(struct device_node *np, int index); #else static inline int dev_pm_opp_of_add_table(struct device *dev) { @@ -357,6 +358,10 @@ static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp) { return NULL; } +static inline unsigned int of_get_required_opp_performance_state(struct device_node *np, int index) +{ + return 0; +} #endif #endif /* __LINUX_OPP_H__ */ |