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237 lines
6.1 KiB
237 lines
6.1 KiB
/* |
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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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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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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/err.h> |
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#include <linux/notifier.h> |
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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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}; |
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#if defined(CONFIG_PM_OPP) |
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unsigned long dev_pm_opp_get_voltage(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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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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struct dev_pm_opp *dev_pm_opp_get_suspend_opp(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_freq_ceil(struct device *dev, |
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unsigned long *freq); |
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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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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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struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); |
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int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, |
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unsigned int count); |
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void dev_pm_opp_put_supported_hw(struct device *dev); |
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int dev_pm_opp_set_prop_name(struct device *dev, const char *name); |
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void dev_pm_opp_put_prop_name(struct device *dev); |
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struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name); |
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void dev_pm_opp_put_regulator(struct opp_table *opp_table); |
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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_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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#else |
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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 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 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 struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) |
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{ |
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return NULL; |
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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(-ENOTSUPP); |
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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(-ENOTSUPP); |
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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(-ENOTSUPP); |
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} |
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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 -ENOTSUPP; |
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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 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 struct srcu_notifier_head *dev_pm_opp_get_notifier( |
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struct device *dev) |
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{ |
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return ERR_PTR(-ENOTSUPP); |
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} |
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static inline int dev_pm_opp_set_supported_hw(struct device *dev, |
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const u32 *versions, |
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unsigned int count) |
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{ |
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return -ENOTSUPP; |
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} |
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static inline void dev_pm_opp_put_supported_hw(struct device *dev) {} |
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static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
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{ |
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return -ENOTSUPP; |
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} |
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static inline void dev_pm_opp_put_prop_name(struct device *dev) {} |
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static inline struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name) |
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{ |
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return ERR_PTR(-ENOTSUPP); |
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} |
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static inline void dev_pm_opp_put_regulator(struct opp_table *opp_table) {} |
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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 -ENOTSUPP; |
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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 -ENOTSUPP; |
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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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#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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void dev_pm_opp_of_remove_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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#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 -ENOTSUPP; |
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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 dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask) |
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{ |
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return -ENOTSUPP; |
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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 -ENOTSUPP; |
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} |
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#endif |
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#endif /* __LINUX_OPP_H__ */
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