summaryrefslogtreecommitdiff
path: root/include/linux/pm_opp.h
blob: 0a2a88e5a383f18934830f0548892cad10737bad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
/*
 * Generic OPP Interface
 *
 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
 *	Nishanth Menon
 *	Romit Dasgupta
 *	Kevin Hilman
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __LINUX_OPP_H__
#define __LINUX_OPP_H__

#include <linux/err.h>
#include <linux/notifier.h>

struct clk;
struct regulator;
struct dev_pm_opp;
struct device;
struct opp_table;

enum dev_pm_opp_event {
	OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
};

/**
 * struct dev_pm_opp_supply - Power supply voltage/current values
 * @u_volt:	Target voltage in microvolts corresponding to this OPP
 * @u_volt_min:	Minimum voltage in microvolts corresponding to this OPP
 * @u_volt_max:	Maximum voltage in microvolts corresponding to this OPP
 * @u_amp:	Maximum current drawn by the device in microamperes
 *
 * This structure stores the voltage/current values for a single power supply.
 */
struct dev_pm_opp_supply {
	unsigned long u_volt;
	unsigned long u_volt_min;
	unsigned long u_volt_max;
	unsigned long u_amp;
};

/**
 * struct dev_pm_opp_info - OPP freq/voltage/current values
 * @rate:	Target clk rate in hz
 * @supplies:	Array of voltage/current values for all power supplies
 *
 * This structure stores the freq/voltage/current values for a single OPP.
 */
struct dev_pm_opp_info {
	unsigned long rate;
	struct dev_pm_opp_supply *supplies;
};

/**
 * struct dev_pm_set_opp_data - Set OPP data
 * @old_opp:	Old OPP info
 * @new_opp:	New OPP info
 * @regulators:	Array of regulator pointers
 * @regulator_count: Number of regulators
 * @clk:	Pointer to clk
 * @dev:	Pointer to the struct device
 *
 * This structure contains all information required for setting an OPP.
 */
struct dev_pm_set_opp_data {
	struct dev_pm_opp_info old_opp;
	struct dev_pm_opp_info new_opp;

	struct regulator **regulators;
	unsigned int regulator_count;
	struct clk *clk;
	struct device *dev;
};

#if defined(CONFIG_PM_OPP)

struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index);
void dev_pm_opp_put_opp_table(struct opp_table *opp_table);

unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);

unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);

bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);

int dev_pm_opp_get_opp_count(struct device *dev);
unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev);

struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
					      unsigned long freq,
					      bool available);

struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
					      unsigned long *freq);

struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
					     unsigned long *freq);
void dev_pm_opp_put(struct dev_pm_opp *opp);

int dev_pm_opp_add(struct device *dev, unsigned long freq,
		   unsigned long u_volt);
void dev_pm_opp_remove(struct device *dev, unsigned long freq);

int dev_pm_opp_enable(struct device *dev, unsigned long freq);

int dev_pm_opp_disable(struct device *dev, unsigned long freq);

int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb);
int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);

struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
void dev_pm_opp_put_regulators(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name);
void dev_pm_opp_put_clkname(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev, struct device *virt_dev, int index);
void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
void dev_pm_opp_remove_table(struct device *dev);
void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
#else
static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline struct opp_table *dev_pm_opp_get_opp_table_indexed(struct device *dev, int index)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_opp_table(struct opp_table *opp_table) {}

static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
{
	return 0;
}

static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
{
	return 0;
}

static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
{
	return false;
}

static inline int dev_pm_opp_get_opp_count(struct device *dev)
{
	return 0;
}

static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
{
	return 0;
}

static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
{
	return 0;
}

static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
{
	return 0;
}

static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
{
	return 0;
}

static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
					unsigned long freq, bool available)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
					unsigned long *freq)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
					unsigned long *freq)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}

static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
					unsigned long u_volt)
{
	return -ENOTSUPP;
}

static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
{
}

static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
{
	return 0;
}

static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
{
	return 0;
}

static inline int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb)
{
	return -ENOTSUPP;
}

static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
							    const u32 *versions,
							    unsigned int count)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}

static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
			int (*set_opp)(struct dev_pm_set_opp_data *data))
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {}

static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}

static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}

static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}

static inline struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev, struct device *virt_dev, int index)
{
	return ERR_PTR(-ENOTSUPP);
}

static inline void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev) {}

static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
	return -EINVAL;
}

static inline void dev_pm_opp_remove_table(struct device *dev)
{
}

static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
{
}

#endif		/* CONFIG_PM_OPP */

#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
int dev_pm_opp_of_add_table(struct device *dev);
int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
void dev_pm_opp_of_remove_table(struct device *dev);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);
struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp);
int of_get_required_opp_performance_state(struct device_node *np, int index);
#else
static inline int dev_pm_opp_of_add_table(struct device *dev)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
{
	return -ENOTSUPP;
}

static inline void dev_pm_opp_of_remove_table(struct device *dev)
{
}

static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
{
	return -ENOTSUPP;
}

static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
{
}

static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
	return -ENOTSUPP;
}

static inline struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
{
	return NULL;
}

static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)
{
	return NULL;
}
static inline int of_get_required_opp_performance_state(struct device_node *np, int index)
{
	return -ENOTSUPP;
}
#endif

#endif		/* __LINUX_OPP_H__ */