635 lines
17 KiB
C
635 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Generic OPP Interface
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*
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* Copyright (C) 2009-2010 Texas Instruments Incorporated.
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* Nishanth Menon
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* Romit Dasgupta
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* Kevin Hilman
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*/
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#ifndef __LINUX_OPP_H__
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#define __LINUX_OPP_H__
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#include <linux/energy_model.h>
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#include <linux/err.h>
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#include <linux/notifier.h>
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struct clk;
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struct regulator;
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struct dev_pm_opp;
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struct device;
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struct opp_table;
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enum dev_pm_opp_event {
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OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
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OPP_EVENT_ADJUST_VOLTAGE,
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};
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/**
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* struct dev_pm_opp_supply - Power supply voltage/current values
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* @u_volt: Target voltage in microvolts corresponding to this OPP
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* @u_volt_min: Minimum voltage in microvolts corresponding to this OPP
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* @u_volt_max: Maximum voltage in microvolts corresponding to this OPP
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* @u_amp: Maximum current drawn by the device in microamperes
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* @u_watt: Power used by the device in microwatts
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*
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* This structure stores the voltage/current/power values for a single power
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* supply.
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*/
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struct dev_pm_opp_supply {
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unsigned long u_volt;
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unsigned long u_volt_min;
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unsigned long u_volt_max;
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unsigned long u_amp;
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unsigned long u_watt;
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};
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/**
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* struct dev_pm_opp_icc_bw - Interconnect bandwidth values
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* @avg: Average bandwidth corresponding to this OPP (in icc units)
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* @peak: Peak bandwidth corresponding to this OPP (in icc units)
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*
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* This structure stores the bandwidth values for a single interconnect path.
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*/
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struct dev_pm_opp_icc_bw {
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u32 avg;
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u32 peak;
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};
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typedef int (*config_regulators_t)(struct device *dev,
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struct dev_pm_opp *old_opp, struct dev_pm_opp *new_opp,
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struct regulator **regulators, unsigned int count);
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typedef int (*config_clks_t)(struct device *dev, struct opp_table *opp_table,
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struct dev_pm_opp *opp, void *data, bool scaling_down);
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/**
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* struct dev_pm_opp_config - Device OPP configuration values
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* @clk_names: Clk names, NULL terminated array.
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* @config_clks: Custom set clk helper.
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* @prop_name: Name to postfix to properties.
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* @config_regulators: Custom set regulator helper.
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* @supported_hw: Array of hierarchy of versions to match.
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* @supported_hw_count: Number of elements in the array.
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* @regulator_names: Array of pointers to the names of the regulator, NULL terminated.
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* @genpd_names: Null terminated array of pointers containing names of genpd to
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* attach.
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* @virt_devs: Pointer to return the array of virtual devices.
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*
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* This structure contains platform specific OPP configurations for the device.
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*/
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struct dev_pm_opp_config {
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/* NULL terminated */
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const char * const *clk_names;
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config_clks_t config_clks;
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const char *prop_name;
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config_regulators_t config_regulators;
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const unsigned int *supported_hw;
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unsigned int supported_hw_count;
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const char * const *regulator_names;
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const char * const *genpd_names;
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struct device ***virt_devs;
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};
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#if defined(CONFIG_PM_OPP)
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struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
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void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
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unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
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int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies);
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unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp);
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unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
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unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
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unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
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unsigned int index);
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bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
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int dev_pm_opp_get_opp_count(struct device *dev);
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unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
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unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
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unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
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unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);
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struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
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unsigned long freq,
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bool available);
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struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
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unsigned long *freq);
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struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
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unsigned int level);
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struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
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unsigned int *level);
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struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
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unsigned long *freq);
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struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
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unsigned int *bw, int index);
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struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
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unsigned int *bw, int index);
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void dev_pm_opp_put(struct dev_pm_opp *opp);
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int dev_pm_opp_add(struct device *dev, unsigned long freq,
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unsigned long u_volt);
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void dev_pm_opp_remove(struct device *dev, unsigned long freq);
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void dev_pm_opp_remove_all_dynamic(struct device *dev);
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int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
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unsigned long u_volt, unsigned long u_volt_min,
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unsigned long u_volt_max);
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int dev_pm_opp_enable(struct device *dev, unsigned long freq);
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int dev_pm_opp_disable(struct device *dev, unsigned long freq);
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int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb);
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int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);
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int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
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int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
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void dev_pm_opp_clear_config(int token);
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int dev_pm_opp_config_clks_simple(struct device *dev,
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struct opp_table *opp_table, struct dev_pm_opp *opp, void *data,
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bool scaling_down);
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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);
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int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
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int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
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int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp);
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int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
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int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
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void dev_pm_opp_remove_table(struct device *dev);
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void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
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int dev_pm_opp_sync_regulators(struct device *dev);
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#else
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static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {}
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static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
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{
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return 0;
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}
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static inline int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies)
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{
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return -EOPNOTSUPP;
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}
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static inline unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp)
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{
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return 0;
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}
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static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
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{
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return 0;
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}
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static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
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{
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return 0;
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}
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static inline
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unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
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unsigned int index)
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{
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return 0;
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}
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static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
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{
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return false;
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}
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static inline int dev_pm_opp_get_opp_count(struct device *dev)
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{
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return 0;
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}
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static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
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{
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return 0;
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}
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static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
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{
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return 0;
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}
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static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
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{
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return 0;
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}
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static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
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{
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return 0;
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
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unsigned int level)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
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unsigned int *level)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
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unsigned long freq, bool available)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
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unsigned long *freq)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
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unsigned long *freq)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
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unsigned int *bw, int index)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
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unsigned int *bw, int index)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}
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static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
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unsigned long u_volt)
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{
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return -EOPNOTSUPP;
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}
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static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
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{
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}
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static inline void dev_pm_opp_remove_all_dynamic(struct device *dev)
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{
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}
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static inline int
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dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
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unsigned long u_volt, unsigned long u_volt_min,
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unsigned long u_volt_max)
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{
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return 0;
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}
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static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
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{
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return 0;
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}
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static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
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{
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return 0;
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}
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static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
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{
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return -EOPNOTSUPP;
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}
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static inline void dev_pm_opp_clear_config(int token) {}
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static inline int dev_pm_opp_config_clks_simple(struct device *dev,
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struct opp_table *opp_table, struct dev_pm_opp *opp, void *data,
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bool scaling_down)
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{
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return -EOPNOTSUPP;
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}
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static inline struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table,
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struct opp_table *dst_table, struct dev_pm_opp *src_opp)
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
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{
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return -EINVAL;
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}
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static inline void dev_pm_opp_remove_table(struct device *dev)
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{
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}
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static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
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{
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}
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static inline int dev_pm_opp_sync_regulators(struct device *dev)
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{
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return -EOPNOTSUPP;
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}
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#endif /* CONFIG_PM_OPP */
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#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
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int dev_pm_opp_of_add_table(struct device *dev);
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int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
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int devm_pm_opp_of_add_table_indexed(struct device *dev, int index);
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void dev_pm_opp_of_remove_table(struct device *dev);
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int devm_pm_opp_of_add_table(struct device *dev);
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int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
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void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
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int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
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struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
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struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp);
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int of_get_required_opp_performance_state(struct device_node *np, int index);
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int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table);
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int dev_pm_opp_of_register_em(struct device *dev, struct cpumask *cpus);
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static inline void dev_pm_opp_of_unregister_em(struct device *dev)
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{
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em_dev_unregister_perf_domain(dev);
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}
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#else
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static inline int dev_pm_opp_of_add_table(struct device *dev)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
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{
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return -EOPNOTSUPP;
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}
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static inline int devm_pm_opp_of_add_table_indexed(struct device *dev, int index)
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{
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return -EOPNOTSUPP;
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}
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static inline void dev_pm_opp_of_remove_table(struct device *dev)
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{
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}
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static inline int devm_pm_opp_of_add_table(struct device *dev)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
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{
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return -EOPNOTSUPP;
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}
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static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
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{
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}
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static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
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{
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return -EOPNOTSUPP;
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}
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static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
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{
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return NULL;
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}
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static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)
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{
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return NULL;
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}
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static inline int dev_pm_opp_of_register_em(struct device *dev,
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struct cpumask *cpus)
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{
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return -EOPNOTSUPP;
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}
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static inline void dev_pm_opp_of_unregister_em(struct device *dev)
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{
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}
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static inline int of_get_required_opp_performance_state(struct device_node *np, int index)
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{
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return -EOPNOTSUPP;
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}
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static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_table *opp_table)
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{
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return -EOPNOTSUPP;
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}
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#endif
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/* OPP Configuration helpers */
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/* Regulators helpers */
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static inline int dev_pm_opp_set_regulators(struct device *dev,
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const char * const names[])
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{
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struct dev_pm_opp_config config = {
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.regulator_names = names,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_regulators(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
static inline int devm_pm_opp_set_regulators(struct device *dev,
|
|
const char * const names[])
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.regulator_names = names,
|
|
};
|
|
|
|
return devm_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
/* Supported-hw helpers */
|
|
static inline int dev_pm_opp_set_supported_hw(struct device *dev,
|
|
const u32 *versions,
|
|
unsigned int count)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.supported_hw = versions,
|
|
.supported_hw_count = count,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_supported_hw(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
static inline int devm_pm_opp_set_supported_hw(struct device *dev,
|
|
const u32 *versions,
|
|
unsigned int count)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.supported_hw = versions,
|
|
.supported_hw_count = count,
|
|
};
|
|
|
|
return devm_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
/* clkname helpers */
|
|
static inline int dev_pm_opp_set_clkname(struct device *dev, const char *name)
|
|
{
|
|
const char *names[] = { name, NULL };
|
|
struct dev_pm_opp_config config = {
|
|
.clk_names = names,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_clkname(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name)
|
|
{
|
|
const char *names[] = { name, NULL };
|
|
struct dev_pm_opp_config config = {
|
|
.clk_names = names,
|
|
};
|
|
|
|
return devm_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
/* config-regulators helpers */
|
|
static inline int dev_pm_opp_set_config_regulators(struct device *dev,
|
|
config_regulators_t helper)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.config_regulators = helper,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_config_regulators(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
/* genpd helpers */
|
|
static inline int dev_pm_opp_attach_genpd(struct device *dev,
|
|
const char * const *names,
|
|
struct device ***virt_devs)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.genpd_names = names,
|
|
.virt_devs = virt_devs,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_detach_genpd(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
static inline int devm_pm_opp_attach_genpd(struct device *dev,
|
|
const char * const *names,
|
|
struct device ***virt_devs)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.genpd_names = names,
|
|
.virt_devs = virt_devs,
|
|
};
|
|
|
|
return devm_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
/* prop-name helpers */
|
|
static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
|
|
{
|
|
struct dev_pm_opp_config config = {
|
|
.prop_name = name,
|
|
};
|
|
|
|
return dev_pm_opp_set_config(dev, &config);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_prop_name(int token)
|
|
{
|
|
dev_pm_opp_clear_config(token);
|
|
}
|
|
|
|
#endif /* __LINUX_OPP_H__ */
|