| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Generic OPP Interface |
| * |
| * Copyright (C) 2009-2010 Texas Instruments Incorporated. |
| * Nishanth Menon |
| * Romit Dasgupta |
| * Kevin Hilman |
| */ |
| |
| #ifndef __LINUX_OPP_H__ |
| #define __LINUX_OPP_H__ |
| |
| #include <linux/energy_model.h> |
| #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, |
| OPP_EVENT_ADJUST_VOLTAGE, |
| }; |
| |
| /** |
| * 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_icc_bw - Interconnect bandwidth values |
| * @avg: Average bandwidth corresponding to this OPP (in icc units) |
| * @peak: Peak bandwidth corresponding to this OPP (in icc units) |
| * |
| * This structure stores the bandwidth values for a single interconnect path. |
| */ |
| struct dev_pm_opp_icc_bw { |
| u32 avg; |
| u32 peak; |
| }; |
| |
| /** |
| * 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); |
| |
| unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp); |
| |
| unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, |
| unsigned int index); |
| |
| bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp); |
| |
| 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); |
| 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, |
| bool available); |
| struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, |
| unsigned int level); |
| struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, |
| unsigned int *level); |
| |
| struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
| unsigned long *freq); |
| struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev, |
| unsigned long u_volt); |
| |
| 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); |
| void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
| void dev_pm_opp_remove_all_dynamic(struct device *dev); |
| |
| int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq, |
| unsigned long u_volt, unsigned long u_volt_min, |
| unsigned long u_volt_max); |
| |
| int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
| |
| int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
| |
| 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); |
| int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count); |
| 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); |
| int devm_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count); |
| struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name); |
| void dev_pm_opp_put_clkname(struct opp_table *opp_table); |
| int devm_pm_opp_set_clkname(struct device *dev, const char *name); |
| 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_unregister_set_opp_helper(struct opp_table *opp_table); |
| int devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data)); |
| struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs); |
| void dev_pm_opp_detach_genpd(struct opp_table *opp_table); |
| int devm_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs); |
| struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, struct opp_table *dst_table, struct dev_pm_opp *src_opp); |
| int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate); |
| int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); |
| int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp); |
| 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); |
| int dev_pm_opp_sync_regulators(struct device *dev); |
| #else |
| static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| 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; |
| } |
| |
| static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
| { |
| return 0; |
| } |
| |
| static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) |
| { |
| return 0; |
| } |
| |
| static inline |
| unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, |
| unsigned int index) |
| { |
| return 0; |
| } |
| |
| static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
| { |
| return false; |
| } |
| |
| static inline int dev_pm_opp_get_opp_count(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) |
| { |
| return 0; |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
| unsigned long freq, bool available) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, |
| unsigned int level) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, |
| unsigned int *level) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
| unsigned long *freq) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev, |
| unsigned long u_volt) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
| unsigned long *freq) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| 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) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
| { |
| } |
| |
| static inline void dev_pm_opp_remove_all_dynamic(struct device *dev) |
| { |
| } |
| |
| static inline int |
| dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq, |
| unsigned long u_volt, unsigned long u_volt_min, |
| unsigned long u_volt_max) |
| { |
| return 0; |
| } |
| |
| static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
| { |
| return 0; |
| } |
| |
| static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
| { |
| return 0; |
| } |
| |
| static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, |
| const u32 *versions, |
| unsigned int count) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {} |
| |
| static inline int devm_pm_opp_set_supported_hw(struct device *dev, |
| const u32 *versions, |
| unsigned int count) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| 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 ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {} |
| |
| static inline int devm_pm_opp_register_set_opp_helper(struct device *dev, |
| int (*set_opp)(struct dev_pm_set_opp_data *data)) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| 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(-EOPNOTSUPP); |
| } |
| |
| static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {} |
| |
| static inline int devm_pm_opp_set_regulators(struct device *dev, |
| const char * const names[], |
| unsigned int count) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {} |
| |
| static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {} |
| |
| static inline int devm_pm_opp_attach_genpd(struct device *dev, |
| const char * const *names, |
| struct device ***virt_devs) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, |
| struct opp_table *dst_table, struct dev_pm_opp *src_opp) |
| { |
| return ERR_PTR(-EOPNOTSUPP); |
| } |
| |
| static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
| { |
| return -EINVAL; |
| } |
| |
| static inline void dev_pm_opp_remove_table(struct device *dev) |
| { |
| } |
| |
| static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask) |
| { |
| } |
| |
| static inline int dev_pm_opp_sync_regulators(struct device *dev) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| #endif /* CONFIG_PM_OPP */ |
| |
| #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
| int dev_pm_opp_of_add_table(struct device *dev); |
| int dev_pm_opp_of_add_table_indexed(struct device *dev, int index); |
| int devm_pm_opp_of_add_table_indexed(struct device *dev, int index); |
| int dev_pm_opp_of_add_table_noclk(struct device *dev, int index); |
| int devm_pm_opp_of_add_table_noclk(struct device *dev, int index); |
| void dev_pm_opp_of_remove_table(struct device *dev); |
| int devm_pm_opp_of_add_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); |
| struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp); |
| int of_get_required_opp_performance_state(struct device_node *np, int index); |
| int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table); |
| int dev_pm_opp_of_register_em(struct device *dev, struct cpumask *cpus); |
| static inline void dev_pm_opp_of_unregister_em(struct device *dev) |
| { |
| em_dev_unregister_perf_domain(dev); |
| } |
| #else |
| static inline int dev_pm_opp_of_add_table(struct device *dev) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int devm_pm_opp_of_add_table_indexed(struct device *dev, int index) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_of_add_table_noclk(struct device *dev, int index) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int devm_pm_opp_of_add_table_noclk(struct device *dev, int index) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline void dev_pm_opp_of_remove_table(struct device *dev) |
| { |
| } |
| |
| static inline int devm_pm_opp_of_add_table(struct device *dev) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask) |
| { |
| } |
| |
| static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev) |
| { |
| return NULL; |
| } |
| |
| static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp) |
| { |
| return NULL; |
| } |
| |
| static inline int dev_pm_opp_of_register_em(struct device *dev, |
| struct cpumask *cpus) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline void dev_pm_opp_of_unregister_em(struct device *dev) |
| { |
| } |
| |
| static inline int of_get_required_opp_performance_state(struct device_node *np, int index) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table) |
| { |
| return -EOPNOTSUPP; |
| } |
| #endif |
| |
| #endif /* __LINUX_OPP_H__ */ |
