| Message ID | e09b2960614c70e38347d52bd4093ab93af1da47.1540446493.git.viresh.kumar@linaro.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | OPP: Support multiple power-domains per device | expand |
On 25 October 2018 at 07:52, Viresh Kumar <viresh.kumar@linaro.org> wrote: > The OPP core currently stores the performance state in the consumer > device's OPP table, but that is going to change going forward and > performance state will rather be set directly in the genpd's OPP table. > > For that we need to get the performance state for genpd's device > structure (genpd->dev) instead of the consumer device's structure. Add a > new helper to do that. > > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Kind regards Uffe > --- > drivers/base/power/domain.c | 32 ++++++++++++++++++++++++++++++++ > include/linux/pm_domain.h | 9 +++++++++ > 2 files changed, 41 insertions(+) > > diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c > index fe9b0527b161..7be8c94c6b7f 100644 > --- a/drivers/base/power/domain.c > +++ b/drivers/base/power/domain.c > @@ -2520,6 +2520,38 @@ int of_genpd_parse_idle_states(struct device_node *dn, > } > EXPORT_SYMBOL_GPL(of_genpd_parse_idle_states); > > +/** > + * pm_genpd_opp_to_performance_state - Gets performance state of the genpd from its OPP node. > + * > + * @genpd_dev: Genpd's device for which the performance-state needs to be found. > + * @opp: struct dev_pm_opp of the OPP for which we need to find performance > + * state. > + * > + * Returns performance state encoded in the OPP of the genpd. 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 pm_genpd_opp_to_performance_state(struct device *genpd_dev, > + struct dev_pm_opp *opp) > +{ > + struct generic_pm_domain *genpd = NULL; > + int state; > + > + genpd = container_of(genpd_dev, struct generic_pm_domain, dev); > + > + if (unlikely(!genpd->opp_to_performance_state)) > + return 0; > + > + genpd_lock(genpd); > + state = genpd->opp_to_performance_state(genpd, opp); > + genpd_unlock(genpd); > + > + return state; > +} > +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. > diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h > index 3b5d7280e52e..4f803f934308 100644 > --- a/include/linux/pm_domain.h > +++ b/include/linux/pm_domain.h > @@ -258,6 +258,8 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent, > struct generic_pm_domain *of_genpd_remove_last(struct device_node *np); > 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); > > @@ -299,6 +301,13 @@ static inline int of_genpd_parse_idle_states(struct device_node *dn, > return -ENODEV; > } > > +static inline unsigned int > +pm_genpd_opp_to_performance_state(struct device *genpd_dev, > + struct dev_pm_opp *opp) > +{ > + return 0; > +} > + > static inline unsigned int > of_genpd_opp_to_performance_state(struct device *dev, > struct device_node *np) > -- > 2.19.1.568.g152ad8e3369a >
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index fe9b0527b161..7be8c94c6b7f 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2520,6 +2520,38 @@ int of_genpd_parse_idle_states(struct device_node *dn, } EXPORT_SYMBOL_GPL(of_genpd_parse_idle_states); +/** + * pm_genpd_opp_to_performance_state - Gets performance state of the genpd from its OPP node. + * + * @genpd_dev: Genpd's device for which the performance-state needs to be found. + * @opp: struct dev_pm_opp of the OPP for which we need to find performance + * state. + * + * Returns performance state encoded in the OPP of the genpd. 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 pm_genpd_opp_to_performance_state(struct device *genpd_dev, + struct dev_pm_opp *opp) +{ + struct generic_pm_domain *genpd = NULL; + int state; + + genpd = container_of(genpd_dev, struct generic_pm_domain, dev); + + if (unlikely(!genpd->opp_to_performance_state)) + return 0; + + genpd_lock(genpd); + state = genpd->opp_to_performance_state(genpd, opp); + genpd_unlock(genpd); + + return state; +} +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. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 3b5d7280e52e..4f803f934308 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -258,6 +258,8 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent, struct generic_pm_domain *of_genpd_remove_last(struct device_node *np); 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); @@ -299,6 +301,13 @@ static inline int of_genpd_parse_idle_states(struct device_node *dn, return -ENODEV; } +static inline unsigned int +pm_genpd_opp_to_performance_state(struct device *genpd_dev, + struct dev_pm_opp *opp) +{ + return 0; +} + static inline unsigned int of_genpd_opp_to_performance_state(struct device *dev, struct device_node *np)
The OPP core currently stores the performance state in the consumer device's OPP table, but that is going to change going forward and performance state will rather be set directly in the genpd's OPP table. For that we need to get the performance state for genpd's device structure (genpd->dev) instead of the consumer device's structure. Add a new helper to do that. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/base/power/domain.c | 32 ++++++++++++++++++++++++++++++++ include/linux/pm_domain.h | 9 +++++++++ 2 files changed, 41 insertions(+)