summaryrefslogtreecommitdiffstats
path: root/drivers/soc/qcom/rpmpd.c
blob: 0b532a892d608a122ac0bce47aee38fd42db22bd (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
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */

#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pm_domain.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <linux/soc/qcom/smd-rpm.h>

#include <dt-bindings/power/qcom-rpmpd.h>

#define domain_to_rpmpd(domain) container_of(domain, struct rpmpd, pd)

/* Resource types:
 * RPMPD_X is X encoded as a little-endian, lower-case, ASCII string */
#define RPMPD_SMPA 0x61706d73
#define RPMPD_LDOA 0x616f646c
#define RPMPD_SMPB 0x62706d73
#define RPMPD_LDOB 0x626f646c
#define RPMPD_RWCX 0x78637772
#define RPMPD_RWMX 0x786d7772
#define RPMPD_RWLC 0x636c7772
#define RPMPD_RWLM 0x6d6c7772
#define RPMPD_RWSC 0x63737772
#define RPMPD_RWSM 0x6d737772

/* Operation Keys */
#define KEY_CORNER		0x6e726f63 /* corn */
#define KEY_ENABLE		0x6e657773 /* swen */
#define KEY_FLOOR_CORNER	0x636676   /* vfc */
#define KEY_FLOOR_LEVEL		0x6c6676   /* vfl */
#define KEY_LEVEL		0x6c766c76 /* vlvl */

#define MAX_CORNER_RPMPD_STATE	6

#define DEFINE_RPMPD_PAIR(_platform, _name, _active, r_type, r_key,	\
			  r_id)						\
	static struct rpmpd _platform##_##_active;			\
	static struct rpmpd _platform##_##_name = {			\
		.pd = {	.name = #_name,	},				\
		.peer = &_platform##_##_active,				\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_##r_key,					\
	};								\
	static struct rpmpd _platform##_##_active = {			\
		.pd = { .name = #_active, },				\
		.peer = &_platform##_##_name,				\
		.active_only = true,					\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_##r_key,					\
	}

#define DEFINE_RPMPD_CORNER(_platform, _name, r_type, r_id)		\
	static struct rpmpd _platform##_##_name = {			\
		.pd = { .name = #_name, },				\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_CORNER,					\
	}

#define DEFINE_RPMPD_LEVEL(_platform, _name, r_type, r_id)		\
	static struct rpmpd _platform##_##_name = {			\
		.pd = { .name = #_name, },				\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_LEVEL,					\
	}

#define DEFINE_RPMPD_VFC(_platform, _name, r_type, r_id)		\
	static struct rpmpd _platform##_##_name = {			\
		.pd = { .name = #_name, },				\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_FLOOR_CORNER,				\
	}

#define DEFINE_RPMPD_VFL(_platform, _name, r_type, r_id)		\
	static struct rpmpd _platform##_##_name = {			\
		.pd = { .name = #_name, },				\
		.res_type = RPMPD_##r_type,				\
		.res_id = r_id,						\
		.key = KEY_FLOOR_LEVEL,					\
	}

struct rpmpd_req {
	__le32 key;
	__le32 nbytes;
	__le32 value;
};

struct rpmpd {
	struct generic_pm_domain pd;
	struct rpmpd *peer;
	const bool active_only;
	unsigned int corner;
	bool enabled;
	const char *res_name;
	const int res_type;
	const int res_id;
	struct qcom_smd_rpm *rpm;
	unsigned int max_state;
	__le32 key;
};

struct rpmpd_desc {
	struct rpmpd **rpmpds;
	size_t num_pds;
	unsigned int max_state;
};

static DEFINE_MUTEX(rpmpd_lock);

/* mdm9607 RPM Power Domains */
DEFINE_RPMPD_PAIR(mdm9607, vddcx, vddcx_ao, SMPA, LEVEL, 3);
DEFINE_RPMPD_VFL(mdm9607, vddcx_vfl, SMPA, 3);

DEFINE_RPMPD_PAIR(mdm9607, vddmx, vddmx_ao, LDOA, LEVEL, 12);
DEFINE_RPMPD_VFL(mdm9607, vddmx_vfl, LDOA, 12);
static struct rpmpd *mdm9607_rpmpds[] = {
	[MDM9607_VDDCX] =	&mdm9607_vddcx,
	[MDM9607_VDDCX_AO] =	&mdm9607_vddcx_ao,
	[MDM9607_VDDCX_VFL] =	&mdm9607_vddcx_vfl,
	[MDM9607_VDDMX] =	&mdm9607_vddmx,
	[MDM9607_VDDMX_AO] =	&mdm9607_vddmx_ao,
	[MDM9607_VDDMX_VFL] =	&mdm9607_vddmx_vfl,
};

static const struct rpmpd_desc mdm9607_desc = {
	.rpmpds = mdm9607_rpmpds,
	.num_pds = ARRAY_SIZE(mdm9607_rpmpds),
	.max_state = RPM_SMD_LEVEL_TURBO,
};

/* msm8939 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8939, vddmd, vddmd_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_VFC(msm8939, vddmd_vfc, SMPA, 1);

DEFINE_RPMPD_PAIR(msm8939, vddcx, vddcx_ao, SMPA, CORNER, 2);
DEFINE_RPMPD_VFC(msm8939, vddcx_vfc, SMPA, 2);

DEFINE_RPMPD_PAIR(msm8939, vddmx, vddmx_ao, LDOA, CORNER, 3);

static struct rpmpd *msm8939_rpmpds[] = {
	[MSM8939_VDDMDCX] =	&msm8939_vddmd,
	[MSM8939_VDDMDCX_AO] =	&msm8939_vddmd_ao,
	[MSM8939_VDDMDCX_VFC] =	&msm8939_vddmd_vfc,
	[MSM8939_VDDCX] =	&msm8939_vddcx,
	[MSM8939_VDDCX_AO] =	&msm8939_vddcx_ao,
	[MSM8939_VDDCX_VFC] =	&msm8939_vddcx_vfc,
	[MSM8939_VDDMX] =	&msm8939_vddmx,
	[MSM8939_VDDMX_AO] =	&msm8939_vddmx_ao,
};

static const struct rpmpd_desc msm8939_desc = {
	.rpmpds = msm8939_rpmpds,
	.num_pds = ARRAY_SIZE(msm8939_rpmpds),
	.max_state = MAX_CORNER_RPMPD_STATE,
};

/* msm8916 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8916, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8916, vddmx, vddmx_ao, LDOA, CORNER, 3);

DEFINE_RPMPD_VFC(msm8916, vddcx_vfc, SMPA, 1);

static struct rpmpd *msm8916_rpmpds[] = {
	[MSM8916_VDDCX] =	&msm8916_vddcx,
	[MSM8916_VDDCX_AO] =	&msm8916_vddcx_ao,
	[MSM8916_VDDCX_VFC] =	&msm8916_vddcx_vfc,
	[MSM8916_VDDMX] =	&msm8916_vddmx,
	[MSM8916_VDDMX_AO] =	&msm8916_vddmx_ao,
};

static const struct rpmpd_desc msm8916_desc = {
	.rpmpds = msm8916_rpmpds,
	.num_pds = ARRAY_SIZE(msm8916_rpmpds),
	.max_state = MAX_CORNER_RPMPD_STATE,
};

/* msm8976 RPM Power Domains */
DEFINE_RPMPD_PAIR(msm8976, vddcx, vddcx_ao, SMPA, LEVEL, 2);
DEFINE_RPMPD_PAIR(msm8976, vddmx, vddmx_ao, SMPA, LEVEL, 6);

DEFINE_RPMPD_VFL(msm8976, vddcx_vfl, RWSC, 2);
DEFINE_RPMPD_VFL(msm8976, vddmx_vfl, RWSM, 6);

static struct rpmpd *msm8976_rpmpds[] = {
	[MSM8976_VDDCX] =	&msm8976_vddcx,
	[MSM8976_VDDCX_AO] =	&msm8976_vddcx_ao,
	[MSM8976_VDDCX_VFL] =	&msm8976_vddcx_vfl,
	[MSM8976_VDDMX] =	&msm8976_vddmx,
	[MSM8976_VDDMX_AO] =	&msm8976_vddmx_ao,
	[MSM8976_VDDMX_VFL] =	&msm8976_vddmx_vfl,
};

static const struct rpmpd_desc msm8976_desc = {
	.rpmpds = msm8976_rpmpds,
	.num_pds = ARRAY_SIZE(msm8976_rpmpds),
	.max_state = RPM_SMD_LEVEL_TURBO_HIGH,
};

/* msm8994 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8994, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8994, vddmx, vddmx_ao, SMPA, CORNER, 2);
/* Attention! *Some* 8994 boards with pm8004 may use SMPC here! */
DEFINE_RPMPD_CORNER(msm8994, vddgfx, SMPB, 2);

DEFINE_RPMPD_VFC(msm8994, vddcx_vfc, SMPA, 1);
DEFINE_RPMPD_VFC(msm8994, vddgfx_vfc, SMPB, 2);

static struct rpmpd *msm8994_rpmpds[] = {
	[MSM8994_VDDCX] =	&msm8994_vddcx,
	[MSM8994_VDDCX_AO] =	&msm8994_vddcx_ao,
	[MSM8994_VDDCX_VFC] =	&msm8994_vddcx_vfc,
	[MSM8994_VDDMX] =	&msm8994_vddmx,
	[MSM8994_VDDMX_AO] =	&msm8994_vddmx_ao,
	[MSM8994_VDDGFX] =	&msm8994_vddgfx,
	[MSM8994_VDDGFX_VFC] =	&msm8994_vddgfx_vfc,
};

static const struct rpmpd_desc msm8994_desc = {
	.rpmpds = msm8994_rpmpds,
	.num_pds = ARRAY_SIZE(msm8994_rpmpds),
	.max_state = MAX_CORNER_RPMPD_STATE,
};

/* msm8996 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8996, vddcx, vddcx_ao, SMPA, CORNER, 1);
DEFINE_RPMPD_PAIR(msm8996, vddmx, vddmx_ao, SMPA, CORNER, 2);
DEFINE_RPMPD_CORNER(msm8996, vddsscx, LDOA, 26);

DEFINE_RPMPD_VFC(msm8996, vddcx_vfc, SMPA, 1);
DEFINE_RPMPD_VFC(msm8996, vddsscx_vfc, LDOA, 26);

static struct rpmpd *msm8996_rpmpds[] = {
	[MSM8996_VDDCX] =	&msm8996_vddcx,
	[MSM8996_VDDCX_AO] =	&msm8996_vddcx_ao,
	[MSM8996_VDDCX_VFC] =	&msm8996_vddcx_vfc,
	[MSM8996_VDDMX] =	&msm8996_vddmx,
	[MSM8996_VDDMX_AO] =	&msm8996_vddmx_ao,
	[MSM8996_VDDSSCX] =	&msm8996_vddsscx,
	[MSM8996_VDDSSCX_VFC] =	&msm8996_vddsscx_vfc,
};

static const struct rpmpd_desc msm8996_desc = {
	.rpmpds = msm8996_rpmpds,
	.num_pds = ARRAY_SIZE(msm8996_rpmpds),
	.max_state = MAX_CORNER_RPMPD_STATE,
};

/* msm8998 RPM Power domains */
DEFINE_RPMPD_PAIR(msm8998, vddcx, vddcx_ao, RWCX, LEVEL, 0);
DEFINE_RPMPD_VFL(msm8998, vddcx_vfl, RWCX, 0);

DEFINE_RPMPD_PAIR(msm8998, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(msm8998, vddmx_vfl, RWMX, 0);

DEFINE_RPMPD_LEVEL(msm8998, vdd_ssccx, RWSC, 0);
DEFINE_RPMPD_VFL(msm8998, vdd_ssccx_vfl, RWSC, 0);

DEFINE_RPMPD_LEVEL(msm8998, vdd_sscmx, RWSM, 0);
DEFINE_RPMPD_VFL(msm8998, vdd_sscmx_vfl, RWSM, 0);

static struct rpmpd *msm8998_rpmpds[] = {
	[MSM8998_VDDCX] =		&msm8998_vddcx,
	[MSM8998_VDDCX_AO] =		&msm8998_vddcx_ao,
	[MSM8998_VDDCX_VFL] =		&msm8998_vddcx_vfl,
	[MSM8998_VDDMX] =		&msm8998_vddmx,
	[MSM8998_VDDMX_AO] =		&msm8998_vddmx_ao,
	[MSM8998_VDDMX_VFL] =		&msm8998_vddmx_vfl,
	[MSM8998_SSCCX] =		&msm8998_vdd_ssccx,
	[MSM8998_SSCCX_VFL] =		&msm8998_vdd_ssccx_vfl,
	[MSM8998_SSCMX] =		&msm8998_vdd_sscmx,
	[MSM8998_SSCMX_VFL] =		&msm8998_vdd_sscmx_vfl,
};

static const struct rpmpd_desc msm8998_desc = {
	.rpmpds = msm8998_rpmpds,
	.num_pds = ARRAY_SIZE(msm8998_rpmpds),
	.max_state = RPM_SMD_LEVEL_BINNING,
};

/* qcs404 RPM Power domains */
DEFINE_RPMPD_PAIR(qcs404, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(qcs404, vddmx_vfl, RWMX, 0);

DEFINE_RPMPD_LEVEL(qcs404, vdd_lpicx, RWLC, 0);
DEFINE_RPMPD_VFL(qcs404, vdd_lpicx_vfl, RWLC, 0);

DEFINE_RPMPD_LEVEL(qcs404, vdd_lpimx, RWLM, 0);
DEFINE_RPMPD_VFL(qcs404, vdd_lpimx_vfl, RWLM, 0);

static struct rpmpd *qcs404_rpmpds[] = {
	[QCS404_VDDMX] = &qcs404_vddmx,
	[QCS404_VDDMX_AO] = &qcs404_vddmx_ao,
	[QCS404_VDDMX_VFL] = &qcs404_vddmx_vfl,
	[QCS404_LPICX] = &qcs404_vdd_lpicx,
	[QCS404_LPICX_VFL] = &qcs404_vdd_lpicx_vfl,
	[QCS404_LPIMX] = &qcs404_vdd_lpimx,
	[QCS404_LPIMX_VFL] = &qcs404_vdd_lpimx_vfl,
};

static const struct rpmpd_desc qcs404_desc = {
	.rpmpds = qcs404_rpmpds,
	.num_pds = ARRAY_SIZE(qcs404_rpmpds),
	.max_state = RPM_SMD_LEVEL_BINNING,
};

/* sdm660 RPM Power domains */
DEFINE_RPMPD_PAIR(sdm660, vddcx, vddcx_ao, RWCX, LEVEL, 0);
DEFINE_RPMPD_VFL(sdm660, vddcx_vfl, RWCX, 0);

DEFINE_RPMPD_PAIR(sdm660, vddmx, vddmx_ao, RWMX, LEVEL, 0);
DEFINE_RPMPD_VFL(sdm660, vddmx_vfl, RWMX, 0);

DEFINE_RPMPD_LEVEL(sdm660, vdd_ssccx, RWLC, 0);
DEFINE_RPMPD_VFL(sdm660, vdd_ssccx_vfl, RWLC, 0);

DEFINE_RPMPD_LEVEL(sdm660, vdd_sscmx, RWLM, 0);
DEFINE_RPMPD_VFL(sdm660, vdd_sscmx_vfl, RWLM, 0);

static struct rpmpd *sdm660_rpmpds[] = {
	[SDM660_VDDCX] =		&sdm660_vddcx,
	[SDM660_VDDCX_AO] =		&sdm660_vddcx_ao,
	[SDM660_VDDCX_VFL] =		&sdm660_vddcx_vfl,
	[SDM660_VDDMX] =		&sdm660_vddmx,
	[SDM660_VDDMX_AO] =		&sdm660_vddmx_ao,
	[SDM660_VDDMX_VFL] =		&sdm660_vddmx_vfl,
	[SDM660_SSCCX] =		&sdm660_vdd_ssccx,
	[SDM660_SSCCX_VFL] =		&sdm660_vdd_ssccx_vfl,
	[SDM660_SSCMX] =		&sdm660_vdd_sscmx,
	[SDM660_SSCMX_VFL] =		&sdm660_vdd_sscmx_vfl,
};

static const struct rpmpd_desc sdm660_desc = {
	.rpmpds = sdm660_rpmpds,
	.num_pds = ARRAY_SIZE(sdm660_rpmpds),
	.max_state = RPM_SMD_LEVEL_TURBO,
};

static const struct of_device_id rpmpd_match_table[] = {
	{ .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
	{ .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
	{ .compatible = "qcom,msm8939-rpmpd", .data = &msm8939_desc },
	{ .compatible = "qcom,msm8976-rpmpd", .data = &msm8976_desc },
	{ .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
	{ .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
	{ .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
	{ .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
	{ .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
	{ }
};
MODULE_DEVICE_TABLE(of, rpmpd_match_table);

static int rpmpd_send_enable(struct rpmpd *pd, bool enable)
{
	struct rpmpd_req req = {
		.key = KEY_ENABLE,
		.nbytes = cpu_to_le32(sizeof(u32)),
		.value = cpu_to_le32(enable),
	};

	return qcom_rpm_smd_write(pd->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
				  pd->res_type, pd->res_id, &req, sizeof(req));
}

static int rpmpd_send_corner(struct rpmpd *pd, int state, unsigned int corner)
{
	struct rpmpd_req req = {
		.key = pd->key,
		.nbytes = cpu_to_le32(sizeof(u32)),
		.value = cpu_to_le32(corner),
	};

	return qcom_rpm_smd_write(pd->rpm, state, pd->res_type, pd->res_id,
				  &req, sizeof(req));
};

static void to_active_sleep(struct rpmpd *pd, unsigned int corner,
			    unsigned int *active, unsigned int *sleep)
{
	*active = corner;

	if (pd->active_only)
		*sleep = 0;
	else
		*sleep = *active;
}

static int rpmpd_aggregate_corner(struct rpmpd *pd)
{
	int ret;
	struct rpmpd *peer = pd->peer;
	unsigned int active_corner, sleep_corner;
	unsigned int this_active_corner = 0, this_sleep_corner = 0;
	unsigned int peer_active_corner = 0, peer_sleep_corner = 0;

	to_active_sleep(pd, pd->corner, &this_active_corner, &this_sleep_corner);

	if (peer && peer->enabled)
		to_active_sleep(peer, peer->corner, &peer_active_corner,
				&peer_sleep_corner);

	active_corner = max(this_active_corner, peer_active_corner);

	ret = rpmpd_send_corner(pd, QCOM_SMD_RPM_ACTIVE_STATE, active_corner);
	if (ret)
		return ret;

	sleep_corner = max(this_sleep_corner, peer_sleep_corner);

	return rpmpd_send_corner(pd, QCOM_SMD_RPM_SLEEP_STATE, sleep_corner);
}

static int rpmpd_power_on(struct generic_pm_domain *domain)
{
	int ret;
	struct rpmpd *pd = domain_to_rpmpd(domain);

	mutex_lock(&rpmpd_lock);

	ret = rpmpd_send_enable(pd, true);
	if (ret)
		goto out;

	pd->enabled = true;

	if (pd->corner)
		ret = rpmpd_aggregate_corner(pd);

out:
	mutex_unlock(&rpmpd_lock);

	return ret;
}

static int rpmpd_power_off(struct generic_pm_domain *domain)
{
	int ret;
	struct rpmpd *pd = domain_to_rpmpd(domain);

	mutex_lock(&rpmpd_lock);

	ret = rpmpd_send_enable(pd, false);
	if (!ret)
		pd->enabled = false;

	mutex_unlock(&rpmpd_lock);

	return ret;
}

static int rpmpd_set_performance(struct generic_pm_domain *domain,
				 unsigned int state)
{
	int ret = 0;
	struct rpmpd *pd = domain_to_rpmpd(domain);

	if (state > pd->max_state)
		state = pd->max_state;

	mutex_lock(&rpmpd_lock);

	pd->corner = state;

	/* Always send updates for vfc and vfl */
	if (!pd->enabled && pd->key != KEY_FLOOR_CORNER &&
	    pd->key != KEY_FLOOR_LEVEL)
		goto out;

	ret = rpmpd_aggregate_corner(pd);

out:
	mutex_unlock(&rpmpd_lock);

	return ret;
}

static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
					  struct dev_pm_opp *opp)
{
	return dev_pm_opp_get_level(opp);
}

static int rpmpd_probe(struct platform_device *pdev)
{
	int i;
	size_t num;
	struct genpd_onecell_data *data;
	struct qcom_smd_rpm *rpm;
	struct rpmpd **rpmpds;
	const struct rpmpd_desc *desc;

	rpm = dev_get_drvdata(pdev->dev.parent);
	if (!rpm) {
		dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
		return -ENODEV;
	}

	desc = of_device_get_match_data(&pdev->dev);
	if (!desc)
		return -EINVAL;

	rpmpds = desc->rpmpds;
	num = desc->num_pds;

	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains),
				     GFP_KERNEL);
	data->num_domains = num;

	for (i = 0; i < num; i++) {
		if (!rpmpds[i]) {
			dev_warn(&pdev->dev, "rpmpds[] with empty entry at index=%d\n",
				 i);
			continue;
		}

		rpmpds[i]->rpm = rpm;
		rpmpds[i]->max_state = desc->max_state;
		rpmpds[i]->pd.power_off = rpmpd_power_off;
		rpmpds[i]->pd.power_on = rpmpd_power_on;
		rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
		rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
		pm_genpd_init(&rpmpds[i]->pd, NULL, true);

		data->domains[i] = &rpmpds[i]->pd;
	}

	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
}

static struct platform_driver rpmpd_driver = {
	.driver = {
		.name = "qcom-rpmpd",
		.of_match_table = rpmpd_match_table,
		.suppress_bind_attrs = true,
	},
	.probe = rpmpd_probe,
};

static int __init rpmpd_init(void)
{
	return platform_driver_register(&rpmpd_driver);
}
core_initcall(rpmpd_init);

MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPM Power Domain Driver");
MODULE_LICENSE("GPL v2");