diff options
Diffstat (limited to 'include/linux/pm_opp.h')
| -rw-r--r-- | include/linux/pm_opp.h | 134 |
1 files changed, 110 insertions, 24 deletions
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index bca26157f5b6..a6685b3dde26 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -17,15 +17,70 @@ #include <linux/err.h> #include <linux/notifier.h> +struct clk; +struct regulator; struct dev_pm_opp; struct device; +struct opp_table; enum dev_pm_opp_event { OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE, }; +/** + * struct dev_pm_opp_supply - Power supply voltage/current values + * @u_volt: Target voltage in microvolts corresponding to this OPP + * @u_volt_min: Minimum voltage in microvolts corresponding to this OPP + * @u_volt_max: Maximum voltage in microvolts corresponding to this OPP + * @u_amp: Maximum current drawn by the device in microamperes + * + * This structure stores the voltage/current values for a single power supply. + */ +struct dev_pm_opp_supply { + unsigned long u_volt; + unsigned long u_volt_min; + unsigned long u_volt_max; + unsigned long u_amp; +}; + +/** + * struct dev_pm_opp_info - OPP freq/voltage/current values + * @rate: Target clk rate in hz + * @supplies: Array of voltage/current values for all power supplies + * + * This structure stores the freq/voltage/current values for a single OPP. + */ +struct dev_pm_opp_info { + unsigned long rate; + struct dev_pm_opp_supply *supplies; +}; + +/** + * struct dev_pm_set_opp_data - Set OPP data + * @old_opp: Old OPP info + * @new_opp: New OPP info + * @regulators: Array of regulator pointers + * @regulator_count: Number of regulators + * @clk: Pointer to clk + * @dev: Pointer to the struct device + * + * This structure contains all information required for setting an OPP. + */ +struct dev_pm_set_opp_data { + struct dev_pm_opp_info old_opp; + struct dev_pm_opp_info new_opp; + + struct regulator **regulators; + unsigned int regulator_count; + struct clk *clk; + struct device *dev; +}; + #if defined(CONFIG_PM_OPP) +struct opp_table *dev_pm_opp_get_opp_table(struct device *dev); +void dev_pm_opp_put_opp_table(struct opp_table *opp_table); + unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); @@ -36,7 +91,7 @@ int dev_pm_opp_get_opp_count(struct device *dev); unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev); unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev); unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev); -struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev); +unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev); struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, unsigned long freq, @@ -47,6 +102,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq); +void dev_pm_opp_put(struct dev_pm_opp *opp); int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt); @@ -56,20 +112,30 @@ int dev_pm_opp_enable(struct device *dev, unsigned long freq); int dev_pm_opp_disable(struct device *dev, unsigned long freq); -struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); -int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, - unsigned int count); -void dev_pm_opp_put_supported_hw(struct device *dev); -int dev_pm_opp_set_prop_name(struct device *dev, const char *name); -void dev_pm_opp_put_prop_name(struct device *dev); -int dev_pm_opp_set_regulator(struct device *dev, const char *name); -void dev_pm_opp_put_regulator(struct device *dev); +int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb); +int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb); + +struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count); +void dev_pm_opp_put_supported_hw(struct opp_table *opp_table); +struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name); +void dev_pm_opp_put_prop_name(struct opp_table *opp_table); +struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count); +void dev_pm_opp_put_regulators(struct opp_table *opp_table); +struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data)); +void dev_pm_opp_register_put_opp_helper(struct opp_table *opp_table); int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); 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); #else +static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev) +{ + return ERR_PTR(-ENOTSUPP); +} + +static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {} + static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) { return 0; @@ -105,9 +171,9 @@ static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device return 0; } -static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) +static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) { - return NULL; + return 0; } static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, @@ -128,6 +194,8 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, return ERR_PTR(-ENOTSUPP); } +static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {} + static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt) { @@ -148,34 +216,46 @@ static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) return 0; } -static inline struct srcu_notifier_head *dev_pm_opp_get_notifier( - struct device *dev) +static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb) { - return ERR_PTR(-ENOTSUPP); + return -ENOTSUPP; } -static inline int dev_pm_opp_set_supported_hw(struct device *dev, - const u32 *versions, - unsigned int count) +static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb) { return -ENOTSUPP; } -static inline void dev_pm_opp_put_supported_hw(struct device *dev) {} +static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, + const u32 *versions, + unsigned int count) +{ + return ERR_PTR(-ENOTSUPP); +} + +static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {} -static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name) +static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, + int (*set_opp)(struct dev_pm_set_opp_data *data)) { - return -ENOTSUPP; + return ERR_PTR(-ENOTSUPP); } -static inline void dev_pm_opp_put_prop_name(struct device *dev) {} +static inline void dev_pm_opp_register_put_opp_helper(struct opp_table *opp_table) {} -static inline int dev_pm_opp_set_regulator(struct device *dev, const char *name) +static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name) { - return -ENOTSUPP; + return ERR_PTR(-ENOTSUPP); +} + +static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {} + +static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count) +{ + return ERR_PTR(-ENOTSUPP); } -static inline void dev_pm_opp_put_regulator(struct device *dev) {} +static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {} static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) { @@ -208,6 +288,7 @@ void dev_pm_opp_of_remove_table(struct device *dev); int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask); void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask); int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); +struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev); #else static inline int dev_pm_opp_of_add_table(struct device *dev) { @@ -231,6 +312,11 @@ static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct { return -ENOTSUPP; } + +static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev) +{ + return NULL; +} #endif #endif /* __LINUX_OPP_H__ */ |