]>
Commit | Line | Data |
---|---|---|
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, |
7c999515 | 28 | OPP_EVENT_ADJUST_VOLTAGE, |
03ca370f MH |
29 | }; |
30 | ||
0f0fe7e0 VK |
31 | /** |
32 | * struct dev_pm_opp_supply - Power supply voltage/current values | |
33 | * @u_volt: Target voltage in microvolts corresponding to this OPP | |
34 | * @u_volt_min: Minimum voltage in microvolts corresponding to this OPP | |
35 | * @u_volt_max: Maximum voltage in microvolts corresponding to this OPP | |
36 | * @u_amp: Maximum current drawn by the device in microamperes | |
37 | * | |
38 | * This structure stores the voltage/current values for a single power supply. | |
39 | */ | |
40 | struct dev_pm_opp_supply { | |
41 | unsigned long u_volt; | |
42 | unsigned long u_volt_min; | |
43 | unsigned long u_volt_max; | |
44 | unsigned long u_amp; | |
45 | }; | |
46 | ||
94735585 VK |
47 | /** |
48 | * struct dev_pm_opp_info - OPP freq/voltage/current values | |
49 | * @rate: Target clk rate in hz | |
50 | * @supplies: Array of voltage/current values for all power supplies | |
51 | * | |
52 | * This structure stores the freq/voltage/current values for a single OPP. | |
53 | */ | |
54 | struct dev_pm_opp_info { | |
55 | unsigned long rate; | |
56 | struct dev_pm_opp_supply *supplies; | |
57 | }; | |
58 | ||
59 | /** | |
60 | * struct dev_pm_set_opp_data - Set OPP data | |
61 | * @old_opp: Old OPP info | |
62 | * @new_opp: New OPP info | |
63 | * @regulators: Array of regulator pointers | |
64 | * @regulator_count: Number of regulators | |
65 | * @clk: Pointer to clk | |
66 | * @dev: Pointer to the struct device | |
67 | * | |
68 | * This structure contains all information required for setting an OPP. | |
69 | */ | |
70 | struct dev_pm_set_opp_data { | |
71 | struct dev_pm_opp_info old_opp; | |
72 | struct dev_pm_opp_info new_opp; | |
73 | ||
74 | struct regulator **regulators; | |
75 | unsigned int regulator_count; | |
76 | struct clk *clk; | |
77 | struct device *dev; | |
78 | }; | |
79 | ||
e1f60b29 NM |
80 | #if defined(CONFIG_PM_OPP) |
81 | ||
f067a982 VK |
82 | struct opp_table *dev_pm_opp_get_opp_table(struct device *dev); |
83 | void dev_pm_opp_put_opp_table(struct opp_table *opp_table); | |
84 | ||
47d43ba7 | 85 | unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); |
e1f60b29 | 86 | |
47d43ba7 | 87 | unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); |
7e394e8a | 88 | struct regulator *dev_pm_opp_get_regulator(struct device *dev); |
e1f60b29 | 89 | |
19445b25 BZ |
90 | bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp); |
91 | ||
5d4879cd | 92 | int dev_pm_opp_get_opp_count(struct device *dev); |
3ca9bb33 | 93 | unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev); |
655c9df9 | 94 | unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev); |
21743447 | 95 | unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev); |
3aa26a3b | 96 | unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev); |
e1f60b29 | 97 | |
47d43ba7 NM |
98 | struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
99 | unsigned long freq, | |
100 | bool available); | |
e1f60b29 | 101 | |
47d43ba7 NM |
102 | struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
103 | unsigned long *freq); | |
e1f60b29 | 104 | |
47d43ba7 NM |
105 | struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
106 | unsigned long *freq); | |
7034764a | 107 | void dev_pm_opp_put(struct dev_pm_opp *opp); |
e1f60b29 | 108 | |
5d4879cd NM |
109 | int dev_pm_opp_add(struct device *dev, unsigned long freq, |
110 | unsigned long u_volt); | |
129eec55 | 111 | void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
e1f60b29 | 112 | |
7c999515 SB |
113 | int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq, |
114 | unsigned long u_volt); | |
115 | ||
5d4879cd | 116 | int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
e1f60b29 | 117 | |
5d4879cd | 118 | int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
e1f60b29 | 119 | |
dc2c9ad5 VK |
120 | int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb); |
121 | int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb); | |
122 | ||
fa30184d VK |
123 | struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count); |
124 | void dev_pm_opp_put_supported_hw(struct opp_table *opp_table); | |
125 | struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name); | |
126 | void dev_pm_opp_put_prop_name(struct opp_table *opp_table); | |
dfbe4678 VK |
127 | struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count); |
128 | void dev_pm_opp_put_regulators(struct opp_table *opp_table); | |
829a4e8c VK |
129 | struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name); |
130 | void dev_pm_opp_put_clkname(struct opp_table *opp_table); | |
fa30184d | 131 | struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data)); |
604a7aeb | 132 | void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table); |
b6aa9836 VK |
133 | struct opp_table *dev_pm_opp_register_get_pstate_helper(struct device *dev, int (*get_pstate)(struct device *dev, unsigned long rate)); |
134 | void dev_pm_opp_unregister_get_pstate_helper(struct opp_table *opp_table); | |
6a0712f6 | 135 | int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); |
ddbb74bc AB |
136 | int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); |
137 | int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); | |
411466c5 SH |
138 | void dev_pm_opp_remove_table(struct device *dev); |
139 | void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask); | |
e1f60b29 | 140 | #else |
f067a982 VK |
141 | static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev) |
142 | { | |
143 | return ERR_PTR(-ENOTSUPP); | |
144 | } | |
145 | ||
146 | static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {} | |
147 | ||
47d43ba7 | 148 | static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) |
e1f60b29 NM |
149 | { |
150 | return 0; | |
151 | } | |
152 | ||
47d43ba7 | 153 | static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
e1f60b29 NM |
154 | { |
155 | return 0; | |
156 | } | |
157 | ||
19445b25 BZ |
158 | static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
159 | { | |
160 | return false; | |
161 | } | |
162 | ||
5d4879cd | 163 | static inline int dev_pm_opp_get_opp_count(struct device *dev) |
e1f60b29 NM |
164 | { |
165 | return 0; | |
166 | } | |
167 | ||
3ca9bb33 VK |
168 | static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
169 | { | |
170 | return 0; | |
171 | } | |
172 | ||
655c9df9 VK |
173 | static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) |
174 | { | |
175 | return 0; | |
176 | } | |
177 | ||
21743447 VK |
178 | static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev) |
179 | { | |
180 | return 0; | |
181 | } | |
182 | ||
3aa26a3b | 183 | static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) |
4eafbd15 | 184 | { |
3aa26a3b | 185 | return 0; |
4eafbd15 BZ |
186 | } |
187 | ||
47d43ba7 | 188 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
e1f60b29 NM |
189 | unsigned long freq, bool available) |
190 | { | |
d708b384 | 191 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
192 | } |
193 | ||
47d43ba7 | 194 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
e1f60b29 NM |
195 | unsigned long *freq) |
196 | { | |
d708b384 | 197 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
198 | } |
199 | ||
47d43ba7 | 200 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
e1f60b29 NM |
201 | unsigned long *freq) |
202 | { | |
d708b384 | 203 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
204 | } |
205 | ||
7034764a VK |
206 | static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {} |
207 | ||
5d4879cd | 208 | static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, |
e1f60b29 NM |
209 | unsigned long u_volt) |
210 | { | |
d708b384 | 211 | return -ENOTSUPP; |
e1f60b29 NM |
212 | } |
213 | ||
129eec55 VK |
214 | static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
215 | { | |
216 | } | |
217 | ||
7c999515 SB |
218 | static inline int |
219 | dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq, | |
220 | unsigned long u_volt) | |
221 | { | |
222 | return 0; | |
223 | } | |
224 | ||
5d4879cd | 225 | static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
226 | { |
227 | return 0; | |
228 | } | |
229 | ||
5d4879cd | 230 | static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
231 | { |
232 | return 0; | |
233 | } | |
03ca370f | 234 | |
dc2c9ad5 | 235 | static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb) |
03ca370f | 236 | { |
dc2c9ad5 VK |
237 | return -ENOTSUPP; |
238 | } | |
239 | ||
240 | static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb) | |
241 | { | |
242 | return -ENOTSUPP; | |
03ca370f | 243 | } |
7de36b0a | 244 | |
fa30184d VK |
245 | static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, |
246 | const u32 *versions, | |
247 | unsigned int count) | |
7de36b0a | 248 | { |
fa30184d | 249 | return ERR_PTR(-ENOTSUPP); |
7de36b0a VK |
250 | } |
251 | ||
fa30184d | 252 | static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {} |
7de36b0a | 253 | |
fa30184d | 254 | static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, |
4dab160e VK |
255 | int (*set_opp)(struct dev_pm_set_opp_data *data)) |
256 | { | |
fa30184d | 257 | return ERR_PTR(-ENOTSUPP); |
4dab160e VK |
258 | } |
259 | ||
604a7aeb | 260 | static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {} |
4dab160e | 261 | |
b6aa9836 VK |
262 | static inline struct opp_table *dev_pm_opp_register_get_pstate_helper(struct device *dev, |
263 | int (*get_pstate)(struct device *dev, unsigned long rate)) | |
264 | { | |
265 | return ERR_PTR(-ENOTSUPP); | |
266 | } | |
267 | ||
268 | static inline void dev_pm_opp_unregister_get_pstate_helper(struct opp_table *opp_table) {} | |
269 | ||
fa30184d | 270 | static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
01fb4d3c | 271 | { |
fa30184d | 272 | return ERR_PTR(-ENOTSUPP); |
01fb4d3c VK |
273 | } |
274 | ||
fa30184d | 275 | static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {} |
01fb4d3c | 276 | |
dfbe4678 | 277 | static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count) |
9f8ea969 | 278 | { |
91291d9a | 279 | return ERR_PTR(-ENOTSUPP); |
9f8ea969 VK |
280 | } |
281 | ||
dfbe4678 | 282 | static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {} |
9f8ea969 | 283 | |
829a4e8c VK |
284 | static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name) |
285 | { | |
286 | return ERR_PTR(-ENOTSUPP); | |
287 | } | |
288 | ||
289 | static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {} | |
290 | ||
6a0712f6 VK |
291 | static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) |
292 | { | |
d708b384 | 293 | return -ENOTSUPP; |
6a0712f6 VK |
294 | } |
295 | ||
ddbb74bc | 296 | static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask) |
642aa8ce | 297 | { |
d708b384 | 298 | return -ENOTSUPP; |
642aa8ce VK |
299 | } |
300 | ||
ddbb74bc | 301 | static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
6f707daa VK |
302 | { |
303 | return -EINVAL; | |
304 | } | |
305 | ||
411466c5 SH |
306 | static inline void dev_pm_opp_remove_table(struct device *dev) |
307 | { | |
308 | } | |
309 | ||
310 | static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask) | |
311 | { | |
312 | } | |
313 | ||
a96d69d1 | 314 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 | 315 | |
d6561bb2 | 316 | #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
8f8d37b2 VK |
317 | int dev_pm_opp_of_add_table(struct device *dev); |
318 | void dev_pm_opp_of_remove_table(struct device *dev); | |
ddbb74bc AB |
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); | |
0764c604 | 322 | struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev); |
d6561bb2 | 323 | #else |
8f8d37b2 | 324 | static inline int dev_pm_opp_of_add_table(struct device *dev) |
d6561bb2 | 325 | { |
d708b384 | 326 | return -ENOTSUPP; |
d6561bb2 | 327 | } |
129eec55 | 328 | |
8f8d37b2 | 329 | static inline void dev_pm_opp_of_remove_table(struct device *dev) |
129eec55 VK |
330 | { |
331 | } | |
8d4d4e98 | 332 | |
ddbb74bc | 333 | static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask) |
8d4d4e98 | 334 | { |
d708b384 | 335 | return -ENOTSUPP; |
8d4d4e98 VK |
336 | } |
337 | ||
ddbb74bc | 338 | static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask) |
8d4d4e98 VK |
339 | { |
340 | } | |
341 | ||
ddbb74bc | 342 | static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) |
8d4d4e98 | 343 | { |
d708b384 | 344 | return -ENOTSUPP; |
8d4d4e98 | 345 | } |
0764c604 DG |
346 | |
347 | static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev) | |
348 | { | |
349 | return NULL; | |
350 | } | |
d6561bb2 SG |
351 | #endif |
352 | ||
e1f60b29 | 353 | #endif /* __LINUX_OPP_H__ */ |