2 * Generic OPP Interface
4 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #ifndef __LINUX_OPP_H__
15 #define __LINUX_OPP_H__
17 #include <linux/err.h>
18 #include <linux/notifier.h>
26 enum dev_pm_opp_event {
27 OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
31 * struct dev_pm_opp_supply - Power supply voltage/current values
32 * @u_volt: Target voltage in microvolts corresponding to this OPP
33 * @u_volt_min: Minimum voltage in microvolts corresponding to this OPP
34 * @u_volt_max: Maximum voltage in microvolts corresponding to this OPP
35 * @u_amp: Maximum current drawn by the device in microamperes
37 * This structure stores the voltage/current values for a single power supply.
39 struct dev_pm_opp_supply {
41 unsigned long u_volt_min;
42 unsigned long u_volt_max;
47 * struct dev_pm_opp_info - OPP freq/voltage/current values
48 * @rate: Target clk rate in hz
49 * @supplies: Array of voltage/current values for all power supplies
51 * This structure stores the freq/voltage/current values for a single OPP.
53 struct dev_pm_opp_info {
55 struct dev_pm_opp_supply *supplies;
59 * struct dev_pm_set_opp_data - Set OPP data
60 * @old_opp: Old OPP info
61 * @new_opp: New OPP info
62 * @regulators: Array of regulator pointers
63 * @regulator_count: Number of regulators
64 * @clk: Pointer to clk
65 * @dev: Pointer to the struct device
67 * This structure contains all information required for setting an OPP.
69 struct dev_pm_set_opp_data {
70 struct dev_pm_opp_info old_opp;
71 struct dev_pm_opp_info new_opp;
73 struct regulator **regulators;
74 unsigned int regulator_count;
79 #if defined(CONFIG_PM_OPP)
81 struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
82 struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index);
83 void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
85 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
87 unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
89 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
91 int dev_pm_opp_get_opp_count(struct device *dev);
92 unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
93 unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
94 unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
95 unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);
97 struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
101 struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
102 unsigned long *freq);
104 struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
105 unsigned long *freq);
106 void dev_pm_opp_put(struct dev_pm_opp *opp);
108 int dev_pm_opp_add(struct device *dev, unsigned long freq,
109 unsigned long u_volt);
110 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
112 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
114 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
116 int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb);
117 int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);
119 struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
120 void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
121 struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
122 void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
123 struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
124 void dev_pm_opp_put_regulators(struct opp_table *opp_table);
125 struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name);
126 void dev_pm_opp_put_clkname(struct opp_table *opp_table);
127 struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
128 void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
129 struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev, struct device *virt_dev, int index);
130 void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev);
131 int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
132 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
133 int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
134 int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
135 void dev_pm_opp_remove_table(struct device *dev);
136 void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
138 static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
140 return ERR_PTR(-ENOTSUPP);
143 static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index)
145 return ERR_PTR(-ENOTSUPP);
148 static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {}
150 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
155 static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
160 static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
165 static inline int dev_pm_opp_get_opp_count(struct device *dev)
170 static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
175 static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
180 static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
185 static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
190 static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
191 unsigned long freq, bool available)
193 return ERR_PTR(-ENOTSUPP);
196 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
199 return ERR_PTR(-ENOTSUPP);
202 static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
205 return ERR_PTR(-ENOTSUPP);
208 static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}
210 static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
211 unsigned long u_volt)
216 static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
220 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
225 static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
230 static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb)
235 static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb)
240 static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
244 return ERR_PTR(-ENOTSUPP);
247 static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
249 static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
250 int (*set_opp)(struct dev_pm_set_opp_data *data))
252 return ERR_PTR(-ENOTSUPP);
255 static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {}
257 static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
259 return ERR_PTR(-ENOTSUPP);
262 static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}
264 static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count)
266 return ERR_PTR(-ENOTSUPP);
269 static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
271 static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name)
273 return ERR_PTR(-ENOTSUPP);
276 static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
278 static inline struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev, struct device *virt_dev, int index)
280 return ERR_PTR(-ENOTSUPP);
283 static inline void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev) {}
285 static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)
290 static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
295 static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
300 static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
305 static inline void dev_pm_opp_remove_table(struct device *dev)
309 static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
313 #endif /* CONFIG_PM_OPP */
315 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
316 int dev_pm_opp_of_add_table(struct device *dev);
317 int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
318 void dev_pm_opp_of_remove_table(struct device *dev);
319 int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
320 void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
321 int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
322 struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
323 struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp);
324 int of_get_required_opp_performance_state(struct device_node *np, int index);
326 static inline int dev_pm_opp_of_add_table(struct device *dev)
331 static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
336 static inline void dev_pm_opp_of_remove_table(struct device *dev)
340 static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
345 static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
349 static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
354 static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
359 static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)
363 static inline int of_get_required_opp_performance_state(struct device_node *np, int index)
369 #endif /* __LINUX_OPP_H__ */