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e1f60b29 NM |
1 | /* |
2 | * Generic OPP Interface | |
3 | * | |
4 | * Copyright (C) 2009-2010 Texas Instruments Incorporated. | |
5 | * Nishanth Menon | |
6 | * Romit Dasgupta | |
7 | * Kevin Hilman | |
8 | * | |
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. | |
12 | */ | |
13 | ||
14 | #ifndef __LINUX_OPP_H__ | |
15 | #define __LINUX_OPP_H__ | |
16 | ||
17 | #include <linux/err.h> | |
03ca370f | 18 | #include <linux/notifier.h> |
e1f60b29 | 19 | |
94735585 VK |
20 | struct clk; |
21 | struct regulator; | |
47d43ba7 | 22 | struct dev_pm_opp; |
313162d0 | 23 | struct device; |
91291d9a | 24 | struct opp_table; |
e1f60b29 | 25 | |
47d43ba7 | 26 | enum dev_pm_opp_event { |
129eec55 | 27 | OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE, |
03ca370f MH |
28 | }; |
29 | ||
0f0fe7e0 VK |
30 | /** |
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 | |
36 | * | |
37 | * This structure stores the voltage/current values for a single power supply. | |
38 | */ | |
39 | struct dev_pm_opp_supply { | |
40 | unsigned long u_volt; | |
41 | unsigned long u_volt_min; | |
42 | unsigned long u_volt_max; | |
43 | unsigned long u_amp; | |
44 | }; | |
45 | ||
94735585 VK |
46 | /** |
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 | |
50 | * | |
51 | * This structure stores the freq/voltage/current values for a single OPP. | |
52 | */ | |
53 | struct dev_pm_opp_info { | |
54 | unsigned long rate; | |
55 | struct dev_pm_opp_supply *supplies; | |
56 | }; | |
57 | ||
58 | /** | |
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 | |
66 | * | |
67 | * This structure contains all information required for setting an OPP. | |
68 | */ | |
69 | struct dev_pm_set_opp_data { | |
70 | struct dev_pm_opp_info old_opp; | |
71 | struct dev_pm_opp_info new_opp; | |
72 | ||
73 | struct regulator **regulators; | |
74 | unsigned int regulator_count; | |
75 | struct clk *clk; | |
76 | struct device *dev; | |
77 | }; | |
78 | ||
e1f60b29 NM |
79 | #if defined(CONFIG_PM_OPP) |
80 | ||
47d43ba7 | 81 | unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); |
e1f60b29 | 82 | |
47d43ba7 | 83 | unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); |
e1f60b29 | 84 | |
19445b25 BZ |
85 | bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp); |
86 | ||
5d4879cd | 87 | int dev_pm_opp_get_opp_count(struct device *dev); |
3ca9bb33 | 88 | unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev); |
655c9df9 | 89 | unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev); |
21743447 | 90 | unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev); |
4eafbd15 | 91 | struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev); |
e1f60b29 | 92 | |
47d43ba7 NM |
93 | struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
94 | unsigned long freq, | |
95 | bool available); | |
e1f60b29 | 96 | |
47d43ba7 NM |
97 | struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
98 | unsigned long *freq); | |
e1f60b29 | 99 | |
47d43ba7 NM |
100 | struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
101 | unsigned long *freq); | |
e1f60b29 | 102 | |
5d4879cd NM |
103 | int dev_pm_opp_add(struct device *dev, unsigned long freq, |
104 | unsigned long u_volt); | |
129eec55 | 105 | void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
e1f60b29 | 106 | |
5d4879cd | 107 | int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
e1f60b29 | 108 | |
5d4879cd | 109 | int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
e1f60b29 | 110 | |
5d4879cd | 111 | struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); |
7de36b0a VK |
112 | int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, |
113 | unsigned int count); | |
114 | void dev_pm_opp_put_supported_hw(struct device *dev); | |
01fb4d3c VK |
115 | int dev_pm_opp_set_prop_name(struct device *dev, const char *name); |
116 | void dev_pm_opp_put_prop_name(struct device *dev); | |
dfbe4678 VK |
117 | struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count); |
118 | void dev_pm_opp_put_regulators(struct opp_table *opp_table); | |
4dab160e VK |
119 | int dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data)); |
120 | void dev_pm_opp_register_put_opp_helper(struct device *dev); | |
6a0712f6 | 121 | int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); |
ddbb74bc AB |
122 | int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); |
123 | int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); | |
411466c5 SH |
124 | void dev_pm_opp_remove_table(struct device *dev); |
125 | void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask); | |
e1f60b29 | 126 | #else |
47d43ba7 | 127 | static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) |
e1f60b29 NM |
128 | { |
129 | return 0; | |
130 | } | |
131 | ||
47d43ba7 | 132 | static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
e1f60b29 NM |
133 | { |
134 | return 0; | |
135 | } | |
136 | ||
19445b25 BZ |
137 | static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
138 | { | |
139 | return false; | |
140 | } | |
141 | ||
5d4879cd | 142 | static inline int dev_pm_opp_get_opp_count(struct device *dev) |
e1f60b29 NM |
143 | { |
144 | return 0; | |
145 | } | |
146 | ||
3ca9bb33 VK |
147 | static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
148 | { | |
149 | return 0; | |
150 | } | |
151 | ||
655c9df9 VK |
152 | static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) |
153 | { | |
154 | return 0; | |
155 | } | |
156 | ||
21743447 VK |
157 | static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev) |
158 | { | |
159 | return 0; | |
160 | } | |
161 | ||
4eafbd15 BZ |
162 | static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) |
163 | { | |
164 | return NULL; | |
165 | } | |
166 | ||
47d43ba7 | 167 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
e1f60b29 NM |
168 | unsigned long freq, bool available) |
169 | { | |
d708b384 | 170 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
171 | } |
172 | ||
47d43ba7 | 173 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
e1f60b29 NM |
174 | unsigned long *freq) |
175 | { | |
d708b384 | 176 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
177 | } |
178 | ||
47d43ba7 | 179 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
e1f60b29 NM |
180 | unsigned long *freq) |
181 | { | |
d708b384 | 182 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
183 | } |
184 | ||
5d4879cd | 185 | static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, |
e1f60b29 NM |
186 | unsigned long u_volt) |
187 | { | |
d708b384 | 188 | return -ENOTSUPP; |
e1f60b29 NM |
189 | } |
190 | ||
129eec55 VK |
191 | static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
192 | { | |
193 | } | |
194 | ||
5d4879cd | 195 | static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
196 | { |
197 | return 0; | |
198 | } | |
199 | ||
5d4879cd | 200 | static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
201 | { |
202 | return 0; | |
203 | } | |
03ca370f | 204 | |
5d4879cd NM |
205 | static inline struct srcu_notifier_head *dev_pm_opp_get_notifier( |
206 | struct device *dev) | |
03ca370f | 207 | { |
d708b384 | 208 | return ERR_PTR(-ENOTSUPP); |
03ca370f | 209 | } |
7de36b0a VK |
210 | |
211 | static inline int dev_pm_opp_set_supported_hw(struct device *dev, | |
212 | const u32 *versions, | |
213 | unsigned int count) | |
214 | { | |
d708b384 | 215 | return -ENOTSUPP; |
7de36b0a VK |
216 | } |
217 | ||
218 | static inline void dev_pm_opp_put_supported_hw(struct device *dev) {} | |
219 | ||
4dab160e VK |
220 | static inline int dev_pm_opp_register_set_opp_helper(struct device *dev, |
221 | int (*set_opp)(struct dev_pm_set_opp_data *data)) | |
222 | { | |
223 | return -ENOTSUPP; | |
224 | } | |
225 | ||
226 | static inline void dev_pm_opp_register_put_opp_helper(struct device *dev) {} | |
227 | ||
01fb4d3c VK |
228 | static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
229 | { | |
d708b384 | 230 | return -ENOTSUPP; |
01fb4d3c VK |
231 | } |
232 | ||
233 | static inline void dev_pm_opp_put_prop_name(struct device *dev) {} | |
234 | ||
dfbe4678 | 235 | static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count) |
9f8ea969 | 236 | { |
91291d9a | 237 | return ERR_PTR(-ENOTSUPP); |
9f8ea969 VK |
238 | } |
239 | ||
dfbe4678 | 240 | static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {} |
9f8ea969 | 241 | |
6a0712f6 VK |
242 | static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) |
243 | { | |
d708b384 | 244 | return -ENOTSUPP; |
6a0712f6 VK |
245 | } |
246 | ||
ddbb74bc | 247 | static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask) |
642aa8ce | 248 | { |
d708b384 | 249 | return -ENOTSUPP; |
642aa8ce VK |
250 | } |
251 | ||
ddbb74bc | 252 | static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
6f707daa VK |
253 | { |
254 | return -EINVAL; | |
255 | } | |
256 | ||
411466c5 SH |
257 | static inline void dev_pm_opp_remove_table(struct device *dev) |
258 | { | |
259 | } | |
260 | ||
261 | static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask) | |
262 | { | |
263 | } | |
264 | ||
a96d69d1 | 265 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 | 266 | |
d6561bb2 | 267 | #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
8f8d37b2 VK |
268 | int dev_pm_opp_of_add_table(struct device *dev); |
269 | void dev_pm_opp_of_remove_table(struct device *dev); | |
ddbb74bc AB |
270 | int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask); |
271 | void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask); | |
272 | int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); | |
d6561bb2 | 273 | #else |
8f8d37b2 | 274 | static inline int dev_pm_opp_of_add_table(struct device *dev) |
d6561bb2 | 275 | { |
d708b384 | 276 | return -ENOTSUPP; |
d6561bb2 | 277 | } |
129eec55 | 278 | |
8f8d37b2 | 279 | static inline void dev_pm_opp_of_remove_table(struct device *dev) |
129eec55 VK |
280 | { |
281 | } | |
8d4d4e98 | 282 | |
ddbb74bc | 283 | static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask) |
8d4d4e98 | 284 | { |
d708b384 | 285 | return -ENOTSUPP; |
8d4d4e98 VK |
286 | } |
287 | ||
ddbb74bc | 288 | static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask) |
8d4d4e98 VK |
289 | { |
290 | } | |
291 | ||
ddbb74bc | 292 | static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
8d4d4e98 | 293 | { |
d708b384 | 294 | return -ENOTSUPP; |
8d4d4e98 | 295 | } |
d6561bb2 SG |
296 | #endif |
297 | ||
e1f60b29 | 298 | #endif /* __LINUX_OPP_H__ */ |