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/* 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/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); struct opp_table dev_pm_opp_get_opp_table_indexed(struct device dev, int index); 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); 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_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_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); 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_set_clkname(struct device dev, const char name); void dev_pm_opp_put_clkname(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_unregister_set_opp_helper(struct opp_table opp_table); struct opp_table dev_pm_opp_attach_genpd(struct device dev, const char names, struct device virt_devs); void dev_pm_opp_detach_genpd(struct opp_table opp_table); 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_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 struct opp_table dev_pm_opp_get_opp_table_indexed(struct device dev, int index) { 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; } 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 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(-ENOTSUPP); } static inline struct dev_pm_opp dev_pm_opp_find_level_exact(struct device dev, unsigned int level) { return ERR_PTR(-ENOTSUPP); } static inline struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev, unsigned long freq) { return ERR_PTR(-ENOTSUPP); } static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil_by_volt(struct device dev, unsigned long u_volt) { return ERR_PTR(-ENOTSUPP); } static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev, unsigned long freq) { 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) { return -ENOTSUPP; } 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_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 -ENOTSUPP; } static inline int dev_pm_opp_unregister_notifier(struct device dev, struct notifier_block nb) { return -ENOTSUPP; } 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 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(-ENOTSUPP); } static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table opp_table) {} static inline struct opp_table dev_pm_opp_set_prop_name(struct device dev, const char name) { 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_regulators(struct opp_table opp_table) {} static inline struct opp_table dev_pm_opp_set_clkname(struct device dev, const char name) { return ERR_PTR(-ENOTSUPP); } static inline void dev_pm_opp_put_clkname(struct opp_table opp_table) {} static inline struct opp_table dev_pm_opp_attach_genpd(struct device dev, const char names, struct device *virt_devs) { return ERR_PTR(-ENOTSUPP); } static inline void dev_pm_opp_detach_genpd(struct opp_table opp_table) {} static inline int dev_pm_opp_xlate_performance_state(struct opp_table src_table, struct opp_table dst_table, unsigned int pstate) { return -ENOTSUPP; } static inline int dev_pm_opp_set_rate(struct device dev, unsigned long target_freq) { return -ENOTSUPP; } static inline int dev_pm_opp_set_sharing_cpus(struct device cpu_dev, const struct cpumask cpumask) { return -ENOTSUPP; } 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) { } #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); 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); 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); void dev_pm_opp_of_register_em(struct cpumask cpus); #else static inline int dev_pm_opp_of_add_table(struct device dev) { return -ENOTSUPP; } static inline int dev_pm_opp_of_add_table_indexed(struct device dev, int index) { return -ENOTSUPP; } static inline void dev_pm_opp_of_remove_table(struct device dev) { } static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask cpumask) { return -ENOTSUPP; } 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 -ENOTSUPP; } 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 void dev_pm_opp_of_register_em(struct cpumask cpus) { } static inline int of_get_required_opp_performance_state(struct device_node np, int index) { return -ENOTSUPP; } #endif #endif / __LINUX_OPP_H__ */

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