1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/
3
4 #include <linux/cleanup.h>
5 #include <linux/err.h>
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/mutex.h>
10 #include <linux/pm_domain.h>
11 #include <linux/slab.h>
12 #include <linux/of.h>
13 #include <linux/platform_device.h>
14 #include <linux/pm_opp.h>
15 #include <soc/qcom/cmd-db.h>
16 #include <soc/qcom/rpmh.h>
17 #include <dt-bindings/power/qcom-rpmpd.h>
18 #include <dt-bindings/power/qcom,rpmhpd.h>
19
20 #define domain_to_rpmhpd(domain) container_of(domain, struct rpmhpd, pd)
21
22 #define RPMH_ARC_MAX_LEVELS 16
23
24 /**
25 * struct rpmhpd - top level RPMh power domain resource data structure
26 * @dev: rpmh power domain controller device
27 * @pd: generic_pm_domain corresponding to the power domain
28 * @parent: generic_pm_domain corresponding to the parent's power domain
29 * @peer: A peer power domain in case Active only Voting is
30 * supported
31 * @active_only: True if it represents an Active only peer
32 * @corner: current corner
33 * @active_corner: current active corner
34 * @enable_corner: lowest non-zero corner
35 * @level: An array of level (vlvl) to corner (hlvl) mappings
36 * derived from cmd-db
37 * @level_count: Number of levels supported by the power domain. max
38 * being 16 (0 - 15)
39 * @enabled: true if the power domain is enabled
40 * @res_name: Resource name used for cmd-db lookup
41 * @addr: Resource address as looped up using resource name from
42 * cmd-db
43 * @state_synced: Indicator that sync_state has been invoked for the rpmhpd resource
44 * @skip_retention_level: Indicate that retention level should not be used for the power domain
45 */
46 struct rpmhpd {
47 struct device *dev;
48 struct generic_pm_domain pd;
49 struct generic_pm_domain *parent;
50 struct rpmhpd *peer;
51 const bool active_only;
52 unsigned int corner;
53 unsigned int active_corner;
54 unsigned int enable_corner;
55 u32 level[RPMH_ARC_MAX_LEVELS];
56 size_t level_count;
57 bool enabled;
58 const char *res_name;
59 u32 addr;
60 bool state_synced;
61 bool skip_retention_level;
62 };
63
64 struct rpmhpd_desc {
65 struct rpmhpd **rpmhpds;
66 size_t num_pds;
67 };
68
69 static DEFINE_MUTEX(rpmhpd_lock);
70
71 /* RPMH powerdomains */
72
73 static struct rpmhpd cx_ao;
74 static struct rpmhpd mx;
75 static struct rpmhpd mx_ao;
76 static struct rpmhpd cx = {
77 .pd = { .name = "cx", },
78 .peer = &cx_ao,
79 .res_name = "cx.lvl",
80 };
81
82 static struct rpmhpd cx_ao = {
83 .pd = { .name = "cx_ao", },
84 .active_only = true,
85 .peer = &cx,
86 .res_name = "cx.lvl",
87 };
88
89 static struct rpmhpd cx_ao_w_mx_parent;
90 static struct rpmhpd cx_w_mx_parent = {
91 .pd = { .name = "cx", },
92 .peer = &cx_ao_w_mx_parent,
93 .parent = &mx.pd,
94 .res_name = "cx.lvl",
95 };
96
97 static struct rpmhpd cx_ao_w_mx_parent = {
98 .pd = { .name = "cx_ao", },
99 .active_only = true,
100 .peer = &cx_w_mx_parent,
101 .parent = &mx_ao.pd,
102 .res_name = "cx.lvl",
103 };
104
105 static struct rpmhpd ebi = {
106 .pd = { .name = "ebi", },
107 .res_name = "ebi.lvl",
108 };
109
110 static struct rpmhpd gfx = {
111 .pd = { .name = "gfx", },
112 .res_name = "gfx.lvl",
113 };
114
115 static struct rpmhpd lcx = {
116 .pd = { .name = "lcx", },
117 .res_name = "lcx.lvl",
118 };
119
120 static struct rpmhpd lmx = {
121 .pd = { .name = "lmx", },
122 .res_name = "lmx.lvl",
123 };
124
125 static struct rpmhpd mmcx_ao;
126 static struct rpmhpd mmcx = {
127 .pd = { .name = "mmcx", },
128 .peer = &mmcx_ao,
129 .res_name = "mmcx.lvl",
130 };
131
132 static struct rpmhpd mmcx_ao = {
133 .pd = { .name = "mmcx_ao", },
134 .active_only = true,
135 .peer = &mmcx,
136 .res_name = "mmcx.lvl",
137 };
138
139 static struct rpmhpd mmcx_ao_w_cx_parent;
140 static struct rpmhpd mmcx_w_cx_parent = {
141 .pd = { .name = "mmcx", },
142 .peer = &mmcx_ao_w_cx_parent,
143 .parent = &cx.pd,
144 .res_name = "mmcx.lvl",
145 };
146
147 static struct rpmhpd mmcx_ao_w_cx_parent = {
148 .pd = { .name = "mmcx_ao", },
149 .active_only = true,
150 .peer = &mmcx_w_cx_parent,
151 .parent = &cx_ao.pd,
152 .res_name = "mmcx.lvl",
153 };
154
155 static struct rpmhpd mss = {
156 .pd = { .name = "mss", },
157 .res_name = "mss.lvl",
158 };
159
160 static struct rpmhpd mx_ao;
161 static struct rpmhpd mx = {
162 .pd = { .name = "mx", },
163 .peer = &mx_ao,
164 .res_name = "mx.lvl",
165 };
166
167 static struct rpmhpd mx_ao = {
168 .pd = { .name = "mx_ao", },
169 .active_only = true,
170 .peer = &mx,
171 .res_name = "mx.lvl",
172 };
173
174 static struct rpmhpd mxc_ao;
175 static struct rpmhpd mxc = {
176 .pd = { .name = "mxc", },
177 .peer = &mxc_ao,
178 .res_name = "mxc.lvl",
179 .skip_retention_level = true,
180 };
181
182 static struct rpmhpd mxc_ao = {
183 .pd = { .name = "mxc_ao", },
184 .active_only = true,
185 .peer = &mxc,
186 .res_name = "mxc.lvl",
187 .skip_retention_level = true,
188 };
189
190 static struct rpmhpd nsp = {
191 .pd = { .name = "nsp", },
192 .res_name = "nsp.lvl",
193 };
194
195 static struct rpmhpd nsp0 = {
196 .pd = { .name = "nsp0", },
197 .res_name = "nsp0.lvl",
198 };
199
200 static struct rpmhpd nsp1 = {
201 .pd = { .name = "nsp1", },
202 .res_name = "nsp1.lvl",
203 };
204
205 static struct rpmhpd nsp2 = {
206 .pd = { .name = "nsp2", },
207 .res_name = "nsp2.lvl",
208 };
209
210 static struct rpmhpd qphy = {
211 .pd = { .name = "qphy", },
212 .res_name = "qphy.lvl",
213 };
214
215 static struct rpmhpd gmxc = {
216 .pd = { .name = "gmxc", },
217 .res_name = "gmxc.lvl",
218 };
219
220 /* Milos RPMH powerdomains */
221 static struct rpmhpd *milos_rpmhpds[] = {
222 [RPMHPD_CX] = &cx,
223 [RPMHPD_CX_AO] = &cx_ao,
224 [RPMHPD_EBI] = &ebi,
225 [RPMHPD_GFX] = &gfx,
226 [RPMHPD_LCX] = &lcx,
227 [RPMHPD_LMX] = &lmx,
228 [RPMHPD_MSS] = &mss,
229 [RPMHPD_MX] = &mx,
230 [RPMHPD_MX_AO] = &mx_ao,
231 };
232
233 static const struct rpmhpd_desc milos_desc = {
234 .rpmhpds = milos_rpmhpds,
235 .num_pds = ARRAY_SIZE(milos_rpmhpds),
236 };
237
238 /* SA8540P RPMH powerdomains */
239 static struct rpmhpd *sa8540p_rpmhpds[] = {
240 [SC8280XP_CX] = &cx,
241 [SC8280XP_CX_AO] = &cx_ao,
242 [SC8280XP_EBI] = &ebi,
243 [SC8280XP_LCX] = &lcx,
244 [SC8280XP_LMX] = &lmx,
245 [SC8280XP_MMCX] = &mmcx,
246 [SC8280XP_MMCX_AO] = &mmcx_ao,
247 [SC8280XP_MX] = &mx,
248 [SC8280XP_MX_AO] = &mx_ao,
249 [SC8280XP_NSP] = &nsp,
250 };
251
252 static const struct rpmhpd_desc sa8540p_desc = {
253 .rpmhpds = sa8540p_rpmhpds,
254 .num_pds = ARRAY_SIZE(sa8540p_rpmhpds),
255 };
256
257 /* SA8775P RPMH power domains */
258 static struct rpmhpd *sa8775p_rpmhpds[] = {
259 [SA8775P_CX] = &cx,
260 [SA8775P_CX_AO] = &cx_ao,
261 [SA8775P_EBI] = &ebi,
262 [SA8775P_GFX] = &gfx,
263 [SA8775P_LCX] = &lcx,
264 [SA8775P_LMX] = &lmx,
265 [SA8775P_MMCX] = &mmcx,
266 [SA8775P_MMCX_AO] = &mmcx_ao,
267 [SA8775P_MXC] = &mxc,
268 [SA8775P_MXC_AO] = &mxc_ao,
269 [SA8775P_MX] = &mx,
270 [SA8775P_MX_AO] = &mx_ao,
271 [SA8775P_NSP0] = &nsp0,
272 [SA8775P_NSP1] = &nsp1,
273 };
274
275 static const struct rpmhpd_desc sa8775p_desc = {
276 .rpmhpds = sa8775p_rpmhpds,
277 .num_pds = ARRAY_SIZE(sa8775p_rpmhpds),
278 };
279
280 /* SAR2130P RPMH powerdomains */
281 static struct rpmhpd *sar2130p_rpmhpds[] = {
282 [RPMHPD_CX] = &cx,
283 [RPMHPD_CX_AO] = &cx_ao,
284 [RPMHPD_EBI] = &ebi,
285 [RPMHPD_GFX] = &gfx,
286 [RPMHPD_LCX] = &lcx,
287 [RPMHPD_LMX] = &lmx,
288 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
289 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
290 [RPMHPD_MSS] = &mss,
291 [RPMHPD_MX] = &mx,
292 [RPMHPD_MX_AO] = &mx_ao,
293 [RPMHPD_MXC] = &mxc,
294 [RPMHPD_MXC_AO] = &mxc_ao,
295 [RPMHPD_NSP] = &nsp,
296 [RPMHPD_QPHY] = &qphy,
297 };
298
299 static const struct rpmhpd_desc sar2130p_desc = {
300 .rpmhpds = sar2130p_rpmhpds,
301 .num_pds = ARRAY_SIZE(sar2130p_rpmhpds),
302 };
303
304 /* SDM670 RPMH powerdomains */
305 static struct rpmhpd *sdm670_rpmhpds[] = {
306 [SDM670_CX] = &cx_w_mx_parent,
307 [SDM670_CX_AO] = &cx_ao_w_mx_parent,
308 [SDM670_GFX] = &gfx,
309 [SDM670_LCX] = &lcx,
310 [SDM670_LMX] = &lmx,
311 [SDM670_MSS] = &mss,
312 [SDM670_MX] = &mx,
313 [SDM670_MX_AO] = &mx_ao,
314 };
315
316 static const struct rpmhpd_desc sdm670_desc = {
317 .rpmhpds = sdm670_rpmhpds,
318 .num_pds = ARRAY_SIZE(sdm670_rpmhpds),
319 };
320
321 /* SDM845 RPMH powerdomains */
322 static struct rpmhpd *sdm845_rpmhpds[] = {
323 [SDM845_CX] = &cx_w_mx_parent,
324 [SDM845_CX_AO] = &cx_ao_w_mx_parent,
325 [SDM845_EBI] = &ebi,
326 [SDM845_GFX] = &gfx,
327 [SDM845_LCX] = &lcx,
328 [SDM845_LMX] = &lmx,
329 [SDM845_MSS] = &mss,
330 [SDM845_MX] = &mx,
331 [SDM845_MX_AO] = &mx_ao,
332 };
333
334 static const struct rpmhpd_desc sdm845_desc = {
335 .rpmhpds = sdm845_rpmhpds,
336 .num_pds = ARRAY_SIZE(sdm845_rpmhpds),
337 };
338
339 /* SDX55 RPMH powerdomains */
340 static struct rpmhpd *sdx55_rpmhpds[] = {
341 [SDX55_CX] = &cx_w_mx_parent,
342 [SDX55_MSS] = &mss,
343 [SDX55_MX] = &mx,
344 };
345
346 static const struct rpmhpd_desc sdx55_desc = {
347 .rpmhpds = sdx55_rpmhpds,
348 .num_pds = ARRAY_SIZE(sdx55_rpmhpds),
349 };
350
351 /* SDX65 RPMH powerdomains */
352 static struct rpmhpd *sdx65_rpmhpds[] = {
353 [SDX65_CX] = &cx_w_mx_parent,
354 [SDX65_CX_AO] = &cx_ao_w_mx_parent,
355 [SDX65_MSS] = &mss,
356 [SDX65_MX] = &mx,
357 [SDX65_MX_AO] = &mx_ao,
358 [SDX65_MXC] = &mxc,
359 };
360
361 static const struct rpmhpd_desc sdx65_desc = {
362 .rpmhpds = sdx65_rpmhpds,
363 .num_pds = ARRAY_SIZE(sdx65_rpmhpds),
364 };
365
366 /* SDX75 RPMH powerdomains */
367 static struct rpmhpd *sdx75_rpmhpds[] = {
368 [RPMHPD_CX] = &cx,
369 [RPMHPD_CX_AO] = &cx_ao,
370 [RPMHPD_MSS] = &mss,
371 [RPMHPD_MX] = &mx,
372 [RPMHPD_MX_AO] = &mx_ao,
373 [RPMHPD_MXC] = &mxc,
374 };
375
376 static const struct rpmhpd_desc sdx75_desc = {
377 .rpmhpds = sdx75_rpmhpds,
378 .num_pds = ARRAY_SIZE(sdx75_rpmhpds),
379 };
380
381 /* SM4450 RPMH powerdomains */
382 static struct rpmhpd *sm4450_rpmhpds[] = {
383 [RPMHPD_CX] = &cx,
384 [RPMHPD_CX_AO] = &cx_ao,
385 [RPMHPD_EBI] = &ebi,
386 [RPMHPD_LMX] = &lmx,
387 [RPMHPD_MSS] = &mss,
388 [RPMHPD_MX] = &mx,
389 };
390
391 static const struct rpmhpd_desc sm4450_desc = {
392 .rpmhpds = sm4450_rpmhpds,
393 .num_pds = ARRAY_SIZE(sm4450_rpmhpds),
394 };
395
396 /* SM6350 RPMH powerdomains */
397 static struct rpmhpd *sm6350_rpmhpds[] = {
398 [SM6350_CX] = &cx_w_mx_parent,
399 [SM6350_GFX] = &gfx,
400 [SM6350_LCX] = &lcx,
401 [SM6350_LMX] = &lmx,
402 [SM6350_MSS] = &mss,
403 [SM6350_MX] = &mx,
404 };
405
406 static const struct rpmhpd_desc sm6350_desc = {
407 .rpmhpds = sm6350_rpmhpds,
408 .num_pds = ARRAY_SIZE(sm6350_rpmhpds),
409 };
410
411 /* SM7150 RPMH powerdomains */
412 static struct rpmhpd *sm7150_rpmhpds[] = {
413 [RPMHPD_CX] = &cx_w_mx_parent,
414 [RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
415 [RPMHPD_GFX] = &gfx,
416 [RPMHPD_LCX] = &lcx,
417 [RPMHPD_LMX] = &lmx,
418 [RPMHPD_MX] = &mx,
419 [RPMHPD_MX_AO] = &mx_ao,
420 [RPMHPD_MSS] = &mss,
421 };
422
423 static const struct rpmhpd_desc sm7150_desc = {
424 .rpmhpds = sm7150_rpmhpds,
425 .num_pds = ARRAY_SIZE(sm7150_rpmhpds),
426 };
427
428 /* SM8150 RPMH powerdomains */
429 static struct rpmhpd *sm8150_rpmhpds[] = {
430 [SM8150_CX] = &cx_w_mx_parent,
431 [SM8150_CX_AO] = &cx_ao_w_mx_parent,
432 [SM8150_EBI] = &ebi,
433 [SM8150_GFX] = &gfx,
434 [SM8150_LCX] = &lcx,
435 [SM8150_LMX] = &lmx,
436 [SM8150_MMCX] = &mmcx,
437 [SM8150_MMCX_AO] = &mmcx_ao,
438 [SM8150_MSS] = &mss,
439 [SM8150_MX] = &mx,
440 [SM8150_MX_AO] = &mx_ao,
441 };
442
443 static const struct rpmhpd_desc sm8150_desc = {
444 .rpmhpds = sm8150_rpmhpds,
445 .num_pds = ARRAY_SIZE(sm8150_rpmhpds),
446 };
447
448 static struct rpmhpd *sa8155p_rpmhpds[] = {
449 [SA8155P_CX] = &cx_w_mx_parent,
450 [SA8155P_CX_AO] = &cx_ao_w_mx_parent,
451 [SA8155P_EBI] = &ebi,
452 [SA8155P_GFX] = &gfx,
453 [SA8155P_MSS] = &mss,
454 [SA8155P_MX] = &mx,
455 [SA8155P_MX_AO] = &mx_ao,
456 };
457
458 static const struct rpmhpd_desc sa8155p_desc = {
459 .rpmhpds = sa8155p_rpmhpds,
460 .num_pds = ARRAY_SIZE(sa8155p_rpmhpds),
461 };
462
463 /* SM8250 RPMH powerdomains */
464 static struct rpmhpd *sm8250_rpmhpds[] = {
465 [RPMHPD_CX] = &cx_w_mx_parent,
466 [RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
467 [RPMHPD_EBI] = &ebi,
468 [RPMHPD_GFX] = &gfx,
469 [RPMHPD_LCX] = &lcx,
470 [RPMHPD_LMX] = &lmx,
471 [RPMHPD_MMCX] = &mmcx,
472 [RPMHPD_MMCX_AO] = &mmcx_ao,
473 [RPMHPD_MX] = &mx,
474 [RPMHPD_MX_AO] = &mx_ao,
475 };
476
477 static const struct rpmhpd_desc sm8250_desc = {
478 .rpmhpds = sm8250_rpmhpds,
479 .num_pds = ARRAY_SIZE(sm8250_rpmhpds),
480 };
481
482 /* SM8350 Power domains */
483 static struct rpmhpd *sm8350_rpmhpds[] = {
484 [RPMHPD_CX] = &cx_w_mx_parent,
485 [RPMHPD_CX_AO] = &cx_ao_w_mx_parent,
486 [RPMHPD_EBI] = &ebi,
487 [RPMHPD_GFX] = &gfx,
488 [RPMHPD_LCX] = &lcx,
489 [RPMHPD_LMX] = &lmx,
490 [RPMHPD_MMCX] = &mmcx,
491 [RPMHPD_MMCX_AO] = &mmcx_ao,
492 [RPMHPD_MSS] = &mss,
493 [RPMHPD_MX] = &mx,
494 [RPMHPD_MX_AO] = &mx_ao,
495 [RPMHPD_MXC] = &mxc,
496 [RPMHPD_MXC_AO] = &mxc_ao,
497 };
498
499 static const struct rpmhpd_desc sm8350_desc = {
500 .rpmhpds = sm8350_rpmhpds,
501 .num_pds = ARRAY_SIZE(sm8350_rpmhpds),
502 };
503
504 /* SM8450 RPMH powerdomains */
505 static struct rpmhpd *sm8450_rpmhpds[] = {
506 [RPMHPD_CX] = &cx,
507 [RPMHPD_CX_AO] = &cx_ao,
508 [RPMHPD_EBI] = &ebi,
509 [RPMHPD_GFX] = &gfx,
510 [RPMHPD_LCX] = &lcx,
511 [RPMHPD_LMX] = &lmx,
512 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
513 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
514 [RPMHPD_MSS] = &mss,
515 [RPMHPD_MX] = &mx,
516 [RPMHPD_MX_AO] = &mx_ao,
517 [RPMHPD_MXC] = &mxc,
518 [RPMHPD_MXC_AO] = &mxc_ao,
519 };
520
521 static const struct rpmhpd_desc sm8450_desc = {
522 .rpmhpds = sm8450_rpmhpds,
523 .num_pds = ARRAY_SIZE(sm8450_rpmhpds),
524 };
525
526 /* SM8550 RPMH powerdomains */
527 static struct rpmhpd *sm8550_rpmhpds[] = {
528 [RPMHPD_CX] = &cx,
529 [RPMHPD_CX_AO] = &cx_ao,
530 [RPMHPD_EBI] = &ebi,
531 [RPMHPD_GFX] = &gfx,
532 [RPMHPD_LCX] = &lcx,
533 [RPMHPD_LMX] = &lmx,
534 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
535 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
536 [RPMHPD_MSS] = &mss,
537 [RPMHPD_MX] = &mx,
538 [RPMHPD_MX_AO] = &mx_ao,
539 [RPMHPD_MXC] = &mxc,
540 [RPMHPD_MXC_AO] = &mxc_ao,
541 [RPMHPD_NSP] = &nsp,
542 };
543
544 static const struct rpmhpd_desc sm8550_desc = {
545 .rpmhpds = sm8550_rpmhpds,
546 .num_pds = ARRAY_SIZE(sm8550_rpmhpds),
547 };
548
549 /* SM8650 RPMH powerdomains */
550 static struct rpmhpd *sm8650_rpmhpds[] = {
551 [RPMHPD_CX] = &cx,
552 [RPMHPD_CX_AO] = &cx_ao,
553 [RPMHPD_EBI] = &ebi,
554 [RPMHPD_GFX] = &gfx,
555 [RPMHPD_LCX] = &lcx,
556 [RPMHPD_LMX] = &lmx,
557 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
558 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
559 [RPMHPD_MSS] = &mss,
560 [RPMHPD_MX] = &mx,
561 [RPMHPD_MX_AO] = &mx_ao,
562 [RPMHPD_MXC] = &mxc,
563 [RPMHPD_MXC_AO] = &mxc_ao,
564 [RPMHPD_NSP] = &nsp,
565 [RPMHPD_NSP2] = &nsp2,
566 };
567
568 static const struct rpmhpd_desc sm8650_desc = {
569 .rpmhpds = sm8650_rpmhpds,
570 .num_pds = ARRAY_SIZE(sm8650_rpmhpds),
571 };
572
573 /* SM8750 RPMH powerdomains */
574 static struct rpmhpd *sm8750_rpmhpds[] = {
575 [RPMHPD_CX] = &cx,
576 [RPMHPD_CX_AO] = &cx_ao,
577 [RPMHPD_EBI] = &ebi,
578 [RPMHPD_GFX] = &gfx,
579 [RPMHPD_GMXC] = &gmxc,
580 [RPMHPD_LCX] = &lcx,
581 [RPMHPD_LMX] = &lmx,
582 [RPMHPD_MX] = &mx,
583 [RPMHPD_MX_AO] = &mx_ao,
584 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
585 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
586 [RPMHPD_MSS] = &mss,
587 [RPMHPD_MXC] = &mxc,
588 [RPMHPD_MXC_AO] = &mxc_ao,
589 [RPMHPD_NSP] = &nsp,
590 [RPMHPD_NSP2] = &nsp2,
591 };
592
593 static const struct rpmhpd_desc sm8750_desc = {
594 .rpmhpds = sm8750_rpmhpds,
595 .num_pds = ARRAY_SIZE(sm8750_rpmhpds),
596 };
597
598 /* QDU1000/QRU1000 RPMH powerdomains */
599 static struct rpmhpd *qdu1000_rpmhpds[] = {
600 [QDU1000_CX] = &cx,
601 [QDU1000_EBI] = &ebi,
602 [QDU1000_MSS] = &mss,
603 [QDU1000_MX] = &mx,
604 };
605
606 static const struct rpmhpd_desc qdu1000_desc = {
607 .rpmhpds = qdu1000_rpmhpds,
608 .num_pds = ARRAY_SIZE(qdu1000_rpmhpds),
609 };
610
611 /* SC7180 RPMH powerdomains */
612 static struct rpmhpd *sc7180_rpmhpds[] = {
613 [SC7180_CX] = &cx_w_mx_parent,
614 [SC7180_CX_AO] = &cx_ao_w_mx_parent,
615 [SC7180_GFX] = &gfx,
616 [SC7180_LCX] = &lcx,
617 [SC7180_LMX] = &lmx,
618 [SC7180_MSS] = &mss,
619 [SC7180_MX] = &mx,
620 [SC7180_MX_AO] = &mx_ao,
621 };
622
623 static const struct rpmhpd_desc sc7180_desc = {
624 .rpmhpds = sc7180_rpmhpds,
625 .num_pds = ARRAY_SIZE(sc7180_rpmhpds),
626 };
627
628 /* SC7280 RPMH powerdomains */
629 static struct rpmhpd *sc7280_rpmhpds[] = {
630 [SC7280_CX] = &cx,
631 [SC7280_CX_AO] = &cx_ao,
632 [SC7280_EBI] = &ebi,
633 [SC7280_GFX] = &gfx,
634 [SC7280_LCX] = &lcx,
635 [SC7280_LMX] = &lmx,
636 [SC7280_MSS] = &mss,
637 [SC7280_MX] = &mx,
638 [SC7280_MX_AO] = &mx_ao,
639 };
640
641 static const struct rpmhpd_desc sc7280_desc = {
642 .rpmhpds = sc7280_rpmhpds,
643 .num_pds = ARRAY_SIZE(sc7280_rpmhpds),
644 };
645
646 /* SC8180x RPMH powerdomains */
647 static struct rpmhpd *sc8180x_rpmhpds[] = {
648 [SC8180X_CX] = &cx_w_mx_parent,
649 [SC8180X_CX_AO] = &cx_ao_w_mx_parent,
650 [SC8180X_EBI] = &ebi,
651 [SC8180X_GFX] = &gfx,
652 [SC8180X_LCX] = &lcx,
653 [SC8180X_LMX] = &lmx,
654 [SC8180X_MMCX] = &mmcx,
655 [SC8180X_MMCX_AO] = &mmcx_ao,
656 [SC8180X_MSS] = &mss,
657 [SC8180X_MX] = &mx,
658 [SC8180X_MX_AO] = &mx_ao,
659 };
660
661 static const struct rpmhpd_desc sc8180x_desc = {
662 .rpmhpds = sc8180x_rpmhpds,
663 .num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
664 };
665
666 /* SC8280xp RPMH powerdomains */
667 static struct rpmhpd *sc8280xp_rpmhpds[] = {
668 [SC8280XP_CX] = &cx,
669 [SC8280XP_CX_AO] = &cx_ao,
670 [SC8280XP_EBI] = &ebi,
671 [SC8280XP_GFX] = &gfx,
672 [SC8280XP_LCX] = &lcx,
673 [SC8280XP_LMX] = &lmx,
674 [SC8280XP_MMCX] = &mmcx,
675 [SC8280XP_MMCX_AO] = &mmcx_ao,
676 [SC8280XP_MX] = &mx,
677 [SC8280XP_MX_AO] = &mx_ao,
678 [SC8280XP_NSP] = &nsp,
679 [SC8280XP_QPHY] = &qphy,
680 };
681
682 static const struct rpmhpd_desc sc8280xp_desc = {
683 .rpmhpds = sc8280xp_rpmhpds,
684 .num_pds = ARRAY_SIZE(sc8280xp_rpmhpds),
685 };
686
687 /* Glymur RPMH powerdomains */
688 static struct rpmhpd *glymur_rpmhpds[] = {
689 [RPMHPD_CX] = &cx,
690 [RPMHPD_CX_AO] = &cx_ao,
691 [RPMHPD_EBI] = &ebi,
692 [RPMHPD_GFX] = &gfx,
693 [RPMHPD_LCX] = &lcx,
694 [RPMHPD_LMX] = &lmx,
695 [RPMHPD_MMCX] = &mmcx,
696 [RPMHPD_MMCX_AO] = &mmcx_ao,
697 [RPMHPD_MX] = &mx,
698 [RPMHPD_MX_AO] = &mx_ao,
699 [RPMHPD_MXC] = &mxc,
700 [RPMHPD_MXC_AO] = &mxc_ao,
701 [RPMHPD_MSS] = &mss,
702 [RPMHPD_NSP] = &nsp,
703 [RPMHPD_NSP2] = &nsp2,
704 [RPMHPD_GMXC] = &gmxc,
705 };
706
707 static const struct rpmhpd_desc glymur_desc = {
708 .rpmhpds = glymur_rpmhpds,
709 .num_pds = ARRAY_SIZE(glymur_rpmhpds),
710 };
711
712 /* X1E80100 RPMH powerdomains */
713 static struct rpmhpd *x1e80100_rpmhpds[] = {
714 [RPMHPD_CX] = &cx,
715 [RPMHPD_CX_AO] = &cx_ao,
716 [RPMHPD_EBI] = &ebi,
717 [RPMHPD_GFX] = &gfx,
718 [RPMHPD_LCX] = &lcx,
719 [RPMHPD_LMX] = &lmx,
720 [RPMHPD_MMCX] = &mmcx,
721 [RPMHPD_MMCX_AO] = &mmcx_ao,
722 [RPMHPD_MX] = &mx,
723 [RPMHPD_MX_AO] = &mx_ao,
724 [RPMHPD_NSP] = &nsp,
725 [RPMHPD_MXC] = &mxc,
726 [RPMHPD_GMXC] = &gmxc,
727 };
728
729 static const struct rpmhpd_desc x1e80100_desc = {
730 .rpmhpds = x1e80100_rpmhpds,
731 .num_pds = ARRAY_SIZE(x1e80100_rpmhpds),
732 };
733
734 /* QCS8300 RPMH power domains */
735 static struct rpmhpd *qcs8300_rpmhpds[] = {
736 [RPMHPD_CX] = &cx,
737 [RPMHPD_CX_AO] = &cx_ao,
738 [RPMHPD_EBI] = &ebi,
739 [RPMHPD_GFX] = &gfx,
740 [RPMHPD_LCX] = &lcx,
741 [RPMHPD_LMX] = &lmx,
742 [RPMHPD_MMCX] = &mmcx_w_cx_parent,
743 [RPMHPD_MMCX_AO] = &mmcx_ao_w_cx_parent,
744 [RPMHPD_MXC] = &mxc,
745 [RPMHPD_MXC_AO] = &mxc_ao,
746 [RPMHPD_MX] = &mx,
747 [RPMHPD_MX_AO] = &mx_ao,
748 [RPMHPD_NSP0] = &nsp0,
749 [RPMHPD_NSP1] = &nsp1,
750 };
751
752 static const struct rpmhpd_desc qcs8300_desc = {
753 .rpmhpds = qcs8300_rpmhpds,
754 .num_pds = ARRAY_SIZE(qcs8300_rpmhpds),
755 };
756
757 /* QCS615 RPMH powerdomains */
758 static struct rpmhpd *qcs615_rpmhpds[] = {
759 [RPMHPD_CX] = &cx,
760 [RPMHPD_CX_AO] = &cx_ao,
761 };
762
763 static const struct rpmhpd_desc qcs615_desc = {
764 .rpmhpds = qcs615_rpmhpds,
765 .num_pds = ARRAY_SIZE(qcs615_rpmhpds),
766 };
767
768 static const struct of_device_id rpmhpd_match_table[] = {
769 { .compatible = "qcom,glymur-rpmhpd", .data = &glymur_desc },
770 { .compatible = "qcom,milos-rpmhpd", .data = &milos_desc },
771 { .compatible = "qcom,qcs615-rpmhpd", .data = &qcs615_desc },
772 { .compatible = "qcom,qcs8300-rpmhpd", .data = &qcs8300_desc },
773 { .compatible = "qcom,qdu1000-rpmhpd", .data = &qdu1000_desc },
774 { .compatible = "qcom,sa8155p-rpmhpd", .data = &sa8155p_desc },
775 { .compatible = "qcom,sa8540p-rpmhpd", .data = &sa8540p_desc },
776 { .compatible = "qcom,sa8775p-rpmhpd", .data = &sa8775p_desc },
777 { .compatible = "qcom,sar2130p-rpmhpd", .data = &sar2130p_desc},
778 { .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
779 { .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
780 { .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
781 { .compatible = "qcom,sc8280xp-rpmhpd", .data = &sc8280xp_desc },
782 { .compatible = "qcom,sdm670-rpmhpd", .data = &sdm670_desc },
783 { .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
784 { .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
785 { .compatible = "qcom,sdx65-rpmhpd", .data = &sdx65_desc},
786 { .compatible = "qcom,sdx75-rpmhpd", .data = &sdx75_desc},
787 { .compatible = "qcom,sm4450-rpmhpd", .data = &sm4450_desc },
788 { .compatible = "qcom,sm6350-rpmhpd", .data = &sm6350_desc },
789 { .compatible = "qcom,sm7150-rpmhpd", .data = &sm7150_desc },
790 { .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
791 { .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
792 { .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
793 { .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
794 { .compatible = "qcom,sm8550-rpmhpd", .data = &sm8550_desc },
795 { .compatible = "qcom,sm8650-rpmhpd", .data = &sm8650_desc },
796 { .compatible = "qcom,sm8750-rpmhpd", .data = &sm8750_desc },
797 { .compatible = "qcom,x1e80100-rpmhpd", .data = &x1e80100_desc },
798 { }
799 };
800 MODULE_DEVICE_TABLE(of, rpmhpd_match_table);
801
rpmhpd_send_corner(struct rpmhpd * pd,int state,unsigned int corner,bool sync)802 static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
803 unsigned int corner, bool sync)
804 {
805 struct tcs_cmd cmd = {
806 .addr = pd->addr,
807 .data = corner,
808 };
809
810 /*
811 * Wait for an ack only when we are increasing the
812 * perf state of the power domain
813 */
814 if (sync)
815 return rpmh_write(pd->dev, state, &cmd, 1);
816 else
817 return rpmh_write_async(pd->dev, state, &cmd, 1);
818 }
819
to_active_sleep(struct rpmhpd * pd,unsigned int corner,unsigned int * active,unsigned int * sleep)820 static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
821 unsigned int *active, unsigned int *sleep)
822 {
823 *active = corner;
824
825 if (pd->active_only)
826 *sleep = 0;
827 else
828 *sleep = *active;
829 }
830
831 /*
832 * This function is used to aggregate the votes across the active only
833 * resources and its peers. The aggregated votes are sent to RPMh as
834 * ACTIVE_ONLY votes (which take effect immediately), as WAKE_ONLY votes
835 * (applied by RPMh on system wakeup) and as SLEEP votes (applied by RPMh
836 * on system sleep).
837 * We send ACTIVE_ONLY votes for resources without any peers. For others,
838 * which have an active only peer, all 3 votes are sent.
839 */
rpmhpd_aggregate_corner(struct rpmhpd * pd,unsigned int corner)840 static int rpmhpd_aggregate_corner(struct rpmhpd *pd, unsigned int corner)
841 {
842 int ret;
843 struct rpmhpd *peer = pd->peer;
844 unsigned int active_corner, sleep_corner;
845 unsigned int this_active_corner = 0, this_sleep_corner = 0;
846 unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
847 unsigned int peer_enabled_corner;
848
849 if (pd->state_synced) {
850 to_active_sleep(pd, corner, &this_active_corner, &this_sleep_corner);
851 } else {
852 /* Clamp to highest corner if sync_state hasn't happened */
853 this_active_corner = pd->level_count - 1;
854 this_sleep_corner = pd->level_count - 1;
855 }
856
857 if (peer && peer->enabled) {
858 peer_enabled_corner = max(peer->corner, peer->enable_corner);
859 to_active_sleep(peer, peer_enabled_corner, &peer_active_corner,
860 &peer_sleep_corner);
861 }
862
863 active_corner = max(this_active_corner, peer_active_corner);
864
865 ret = rpmhpd_send_corner(pd, RPMH_ACTIVE_ONLY_STATE, active_corner,
866 active_corner > pd->active_corner);
867 if (ret)
868 return ret;
869
870 pd->active_corner = active_corner;
871
872 if (peer) {
873 peer->active_corner = active_corner;
874
875 ret = rpmhpd_send_corner(pd, RPMH_WAKE_ONLY_STATE,
876 active_corner, false);
877 if (ret)
878 return ret;
879
880 sleep_corner = max(this_sleep_corner, peer_sleep_corner);
881
882 return rpmhpd_send_corner(pd, RPMH_SLEEP_STATE, sleep_corner,
883 false);
884 }
885
886 return ret;
887 }
888
rpmhpd_power_on(struct generic_pm_domain * domain)889 static int rpmhpd_power_on(struct generic_pm_domain *domain)
890 {
891 struct rpmhpd *pd = domain_to_rpmhpd(domain);
892 unsigned int corner;
893 int ret;
894
895 mutex_lock(&rpmhpd_lock);
896
897 corner = max(pd->corner, pd->enable_corner);
898 ret = rpmhpd_aggregate_corner(pd, corner);
899 if (!ret)
900 pd->enabled = true;
901
902 mutex_unlock(&rpmhpd_lock);
903
904 return ret;
905 }
906
rpmhpd_power_off(struct generic_pm_domain * domain)907 static int rpmhpd_power_off(struct generic_pm_domain *domain)
908 {
909 struct rpmhpd *pd = domain_to_rpmhpd(domain);
910 int ret;
911
912 mutex_lock(&rpmhpd_lock);
913
914 ret = rpmhpd_aggregate_corner(pd, 0);
915 if (!ret)
916 pd->enabled = false;
917
918 mutex_unlock(&rpmhpd_lock);
919
920 return ret;
921 }
922
rpmhpd_set_performance_state(struct generic_pm_domain * domain,unsigned int level)923 static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
924 unsigned int level)
925 {
926 struct rpmhpd *pd = domain_to_rpmhpd(domain);
927 int ret, i;
928
929 guard(mutex)(&rpmhpd_lock);
930
931 for (i = 0; i < pd->level_count; i++)
932 if (level <= pd->level[i])
933 break;
934
935 /*
936 * If the level requested is more than that supported by the
937 * max corner, just set it to max anyway.
938 */
939 if (i == pd->level_count)
940 i--;
941
942 if (pd->enabled) {
943 /* Ensure that the domain isn't turn off */
944 if (i < pd->enable_corner)
945 i = pd->enable_corner;
946
947 ret = rpmhpd_aggregate_corner(pd, i);
948 if (ret)
949 return ret;
950 }
951
952 pd->corner = i;
953
954 return 0;
955 }
956
rpmhpd_update_level_mapping(struct rpmhpd * rpmhpd)957 static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)
958 {
959 int i;
960 const u16 *buf;
961
962 buf = cmd_db_read_aux_data(rpmhpd->res_name, &rpmhpd->level_count);
963 if (IS_ERR(buf))
964 return PTR_ERR(buf);
965
966 /* 2 bytes used for each command DB aux data entry */
967 rpmhpd->level_count >>= 1;
968
969 if (rpmhpd->level_count > RPMH_ARC_MAX_LEVELS)
970 return -EINVAL;
971
972 for (i = 0; i < rpmhpd->level_count; i++) {
973 if (rpmhpd->skip_retention_level && buf[i] == RPMH_REGULATOR_LEVEL_RETENTION)
974 continue;
975
976 rpmhpd->level[i] = buf[i];
977
978 /* Remember the first corner with non-zero level */
979 if (!rpmhpd->level[rpmhpd->enable_corner] && rpmhpd->level[i])
980 rpmhpd->enable_corner = i;
981
982 /*
983 * The AUX data may be zero padded. These 0 valued entries at
984 * the end of the map must be ignored.
985 */
986 if (i > 0 && rpmhpd->level[i] == 0) {
987 rpmhpd->level_count = i;
988 break;
989 }
990 pr_debug("%s: ARC hlvl=%2d --> vlvl=%4u\n", rpmhpd->res_name, i,
991 rpmhpd->level[i]);
992 }
993
994 return 0;
995 }
996
rpmhpd_probe(struct platform_device * pdev)997 static int rpmhpd_probe(struct platform_device *pdev)
998 {
999 int i, ret;
1000 size_t num_pds;
1001 struct device *dev = &pdev->dev;
1002 struct genpd_onecell_data *data;
1003 struct rpmhpd **rpmhpds;
1004 const struct rpmhpd_desc *desc;
1005
1006 desc = of_device_get_match_data(dev);
1007 if (!desc)
1008 return -EINVAL;
1009
1010 rpmhpds = desc->rpmhpds;
1011 num_pds = desc->num_pds;
1012
1013 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
1014 if (!data)
1015 return -ENOMEM;
1016
1017 data->domains = devm_kcalloc(dev, num_pds, sizeof(*data->domains),
1018 GFP_KERNEL);
1019 if (!data->domains)
1020 return -ENOMEM;
1021
1022 data->num_domains = num_pds;
1023
1024 for (i = 0; i < num_pds; i++) {
1025 if (!rpmhpds[i])
1026 continue;
1027
1028 rpmhpds[i]->dev = dev;
1029 rpmhpds[i]->addr = cmd_db_read_addr(rpmhpds[i]->res_name);
1030 if (!rpmhpds[i]->addr) {
1031 dev_err(dev, "Could not find RPMh address for resource %s\n",
1032 rpmhpds[i]->res_name);
1033 return -ENODEV;
1034 }
1035
1036 ret = cmd_db_read_slave_id(rpmhpds[i]->res_name);
1037 if (ret != CMD_DB_HW_ARC) {
1038 dev_err(dev, "RPMh slave ID mismatch\n");
1039 return -EINVAL;
1040 }
1041
1042 ret = rpmhpd_update_level_mapping(rpmhpds[i]);
1043 if (ret)
1044 return ret;
1045
1046 rpmhpds[i]->pd.power_off = rpmhpd_power_off;
1047 rpmhpds[i]->pd.power_on = rpmhpd_power_on;
1048 rpmhpds[i]->pd.set_performance_state = rpmhpd_set_performance_state;
1049 pm_genpd_init(&rpmhpds[i]->pd, NULL, true);
1050
1051 data->domains[i] = &rpmhpds[i]->pd;
1052 }
1053
1054 /* Add subdomains */
1055 for (i = 0; i < num_pds; i++) {
1056 if (!rpmhpds[i])
1057 continue;
1058 if (rpmhpds[i]->parent)
1059 pm_genpd_add_subdomain(rpmhpds[i]->parent,
1060 &rpmhpds[i]->pd);
1061 }
1062
1063 return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
1064 }
1065
rpmhpd_sync_state(struct device * dev)1066 static void rpmhpd_sync_state(struct device *dev)
1067 {
1068 const struct rpmhpd_desc *desc = of_device_get_match_data(dev);
1069 struct rpmhpd **rpmhpds = desc->rpmhpds;
1070 unsigned int corner;
1071 struct rpmhpd *pd;
1072 unsigned int i;
1073 int ret;
1074
1075 of_genpd_sync_state(dev->of_node);
1076
1077 mutex_lock(&rpmhpd_lock);
1078 for (i = 0; i < desc->num_pds; i++) {
1079 pd = rpmhpds[i];
1080 if (!pd)
1081 continue;
1082
1083 pd->state_synced = true;
1084 if (pd->enabled)
1085 corner = max(pd->corner, pd->enable_corner);
1086 else
1087 corner = 0;
1088
1089 ret = rpmhpd_aggregate_corner(pd, corner);
1090 if (ret)
1091 dev_err(dev, "failed to sync %s\n", pd->res_name);
1092 }
1093 mutex_unlock(&rpmhpd_lock);
1094 }
1095
1096 static struct platform_driver rpmhpd_driver = {
1097 .driver = {
1098 .name = "qcom-rpmhpd",
1099 .of_match_table = rpmhpd_match_table,
1100 .suppress_bind_attrs = true,
1101 .sync_state = rpmhpd_sync_state,
1102 },
1103 .probe = rpmhpd_probe,
1104 };
1105
rpmhpd_init(void)1106 static int __init rpmhpd_init(void)
1107 {
1108 return platform_driver_register(&rpmhpd_driver);
1109 }
1110 core_initcall(rpmhpd_init);
1111
1112 MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
1113 MODULE_LICENSE("GPL v2");
1114