diff options
Diffstat (limited to 'include/linux/pm_opp.h')
| -rw-r--r-- | include/linux/pm_opp.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 568183e3e641..789406d95e69 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -11,6 +11,7 @@ #ifndef __LINUX_OPP_H__ #define __LINUX_OPP_H__ +#include <linux/cleanup.h> #include <linux/energy_model.h> #include <linux/err.h> #include <linux/notifier.h> @@ -97,11 +98,33 @@ struct dev_pm_opp_data { unsigned long u_volt; }; +/** + * struct dev_pm_opp_key - Key used to identify OPP entries + * @freq: Frequency in Hz. Use 0 if frequency is not to be matched. + * @level: Performance level associated with the OPP entry. + * Use OPP_LEVEL_UNSET if level is not to be matched. + * @bw: Bandwidth associated with the OPP entry. + * Use 0 if bandwidth is not to be matched. + * + * This structure is used to uniquely identify an OPP entry based on + * frequency, performance level, and bandwidth. Each field can be + * selectively ignored during matching by setting it to its respective + * NOP value. + */ +struct dev_pm_opp_key { + unsigned long freq; + unsigned int level; + u32 bw; +}; + #if defined(CONFIG_PM_OPP) struct opp_table *dev_pm_opp_get_opp_table(struct device *dev); +struct opp_table *dev_pm_opp_get_opp_table_ref(struct opp_table *opp_table); void dev_pm_opp_put_opp_table(struct opp_table *opp_table); +unsigned long dev_pm_opp_get_bw(struct dev_pm_opp *opp, bool peak, int index); + unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies); @@ -127,6 +150,10 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, unsigned long freq, bool available); +struct dev_pm_opp *dev_pm_opp_find_key_exact(struct device *dev, + struct dev_pm_opp_key *key, + bool available); + struct dev_pm_opp * dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq, u32 index, bool available); @@ -158,6 +185,7 @@ struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev, unsigned int *bw, int index); +struct dev_pm_opp *dev_pm_opp_get(struct dev_pm_opp *opp); void dev_pm_opp_put(struct dev_pm_opp *opp); int dev_pm_opp_add_dynamic(struct device *dev, struct dev_pm_opp_data *opp); @@ -192,6 +220,7 @@ int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) void dev_pm_opp_remove_table(struct device *dev); void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask); int dev_pm_opp_sync_regulators(struct device *dev); + #else static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev) { @@ -203,8 +232,18 @@ static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device * return ERR_PTR(-EOPNOTSUPP); } +static inline struct opp_table *dev_pm_opp_get_opp_table_ref(struct opp_table *opp_table) +{ + return opp_table; +} + static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {} +static inline unsigned long dev_pm_opp_get_bw(struct dev_pm_opp *opp, bool peak, int index) +{ + return 0; +} + static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) { return 0; @@ -273,6 +312,13 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_find_key_exact(struct device *dev, + struct dev_pm_opp_key *key, + bool available) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct dev_pm_opp * dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq, u32 index, bool available) @@ -334,6 +380,11 @@ static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_get(struct dev_pm_opp *opp) +{ + return opp; +} + static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {} static inline int @@ -560,6 +611,12 @@ static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_ta } #endif +/* Scope based cleanup macro for OPP reference counting */ +DEFINE_FREE(put_opp, struct dev_pm_opp *, if (!IS_ERR_OR_NULL(_T)) dev_pm_opp_put(_T)) + +/* Scope based cleanup macro for OPP table reference counting */ +DEFINE_FREE(put_opp_table, struct opp_table *, if (!IS_ERR_OR_NULL(_T)) dev_pm_opp_put_opp_table(_T)) + /* OPP Configuration helpers */ static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, @@ -691,4 +748,14 @@ static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) return dev_pm_opp_get_freq_indexed(opp, 0); } +static inline int dev_pm_opp_set_level(struct device *dev, unsigned int level) +{ + struct dev_pm_opp *opp __free(put_opp) = dev_pm_opp_find_level_exact(dev, level); + + if (IS_ERR(opp)) + return PTR_ERR(opp); + + return dev_pm_opp_set_opp(dev, opp); +} + #endif /* __LINUX_OPP_H__ */ |