1
2
3
4#include <linux/err.h>
5#include <linux/init.h>
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/mutex.h>
9#include <linux/pm_domain.h>
10#include <linux/of.h>
11#include <linux/of_device.h>
12#include <linux/platform_device.h>
13#include <linux/pm_opp.h>
14#include <linux/soc/qcom/smd-rpm.h>
15
16#include <dt-bindings/power/qcom-rpmpd.h>
17
18#define domain_to_rpmpd(domain) container_of(domain, struct rpmpd, pd)
19
20
21
22#define RPMPD_SMPA 0x61706d73
23#define RPMPD_LDOA 0x616f646c
24#define RPMPD_SMPB 0x62706d73
25#define RPMPD_LDOB 0x626f646c
26#define RPMPD_RWCX 0x78637772
27#define RPMPD_RWMX 0x786d7772
28#define RPMPD_RWLC 0x636c7772
29#define RPMPD_RWLM 0x6d6c7772
30#define RPMPD_RWSC 0x63737772
31#define RPMPD_RWSM 0x6d737772
32
33
34#define KEY_CORNER 0x6e726f63
35#define KEY_ENABLE 0x6e657773
36#define KEY_FLOOR_CORNER 0x636676
37#define KEY_FLOOR_LEVEL 0x6c6676
38#define KEY_LEVEL 0x6c766c76
39
40#define MAX_CORNER_RPMPD_STATE 6
41
42#define DEFINE_RPMPD_PAIR(_platform, _name, _active, r_type, r_key, \
43 r_id) \
44 static struct rpmpd _platform##_##_active; \
45 static struct rpmpd _platform##_##_name = { \
46 .pd = { .name = #_name, }, \
47 .peer = &_platform##_##_active, \
48 .res_type = RPMPD_##r_type, \
49 .res_id = r_id, \
50 .key = KEY_##r_key, \
51 }; \
52 static struct rpmpd _platform##_##_active = { \
53 .pd = { .name = #_active, }, \
54 .peer = &_platform##_##_name, \
55 .active_only = true, \
56 .res_type = RPMPD_##r_type, \
57 .res_id = r_id, \
58 .key = KEY_##r_key, \
59 }
60
61#define DEFINE_RPMPD_CORNER(_platform, _name, r_type, r_id) \
62 static struct rpmpd _platform##_##_name = { \
63 .pd = { .name = #_name, }, \
64 .res_type = RPMPD_##r_type, \
65 .res_id = r_id, \
66 .key = KEY_CORNER, \
67 }
68
69#define DEFINE_RPMPD_LEVEL(_platform, _name, r_type, r_id) \
70 static struct rpmpd _platform##_##_name = { \
71 .pd = { .name = #_name, }, \
72 .res_type = RPMPD_##r_type, \
73 .res_id = r_id, \
74 .key = KEY_LEVEL, \
75 }
76
77#define DEFINE_RPMPD_VFC(_platform, _name, r_type, r_id) \
78 static struct rpmpd _platform##_##_name = { \
79 .pd = { .name = #_name, }, \
80 .res_type = RPMPD_##r_type, \
81 .res_id = r_id, \
82 .key = KEY_FLOOR_CORNER, \
83 }
84
85#define DEFINE_RPMPD_VFL(_platform, _name, r_type, r_id) \
86 static struct rpmpd _platform##_##_name = { \
87 .pd = { .name = #_name, }, \
88 .res_type = RPMPD_##r_type, \
89 .res_id = r_id, \
90 .key = KEY_FLOOR_LEVEL, \
91 }
92
93struct rpmpd_req {
94 __le32 key;
95 __le32 nbytes;
96 __le32 value;
97};
98
99struct rpmpd {
100 struct generic_pm_domain pd;
101 struct rpmpd *peer;
102 const bool active_only;
103 unsigned int corner;
104 bool enabled;
105 const char *res_name;
106 const int res_type;
107 const int res_id;
108 struct qcom_smd_rpm *rpm;
109 unsigned int max_state;
110 __le32 key;
111};
112
113struct rpmpd_desc {
114 struct rpmpd **rpmpds;
115 size_t num_pds;
116 unsigned int max_state;
117};
118
119static DEFINE_MUTEX(rpmpd_lock);
120
121
122DEFINE_RPMPD_PAIR(mdm9607, vddcx, vddcx_ao, SMPA, LEVEL, 3);
123DEFINE_RPMPD_VFL(mdm9607, vddcx_vfl, SMPA, 3);
124
125DEFINE_RPMPD_PAIR(mdm9607, vddmx, vddmx_ao, LDOA, LEVEL, 12);
126DEFINE_RPMPD_VFL(mdm9607, vddmx_vfl, LDOA, 12);
127static struct rpmpd *mdm9607_rpmpds[] = {
128 [MDM9607_VDDCX] = &mdm9607_vddcx,
129 [MDM9607_VDDCX_AO] = &mdm9607_vddcx_ao,
130 [MDM9607_VDDCX_VFL] = &mdm9607_vddcx_vfl,
131 [MDM9607_VDDMX] = &mdm9607_vddmx,
132 [MDM9607_VDDMX_AO] = &mdm9607_vddmx_ao,
133 [MDM9607_VDDMX_VFL] = &mdm9607_vddmx_vfl,
134};
135
136static const struct rpmpd_desc mdm9607_desc = {
137 .rpmpds = mdm9607_rpmpds,
138 .num_pds = ARRAY_SIZE(mdm9607_rpmpds),
139 .max_state = RPM_SMD_LEVEL_TURBO,
140};
141
142
143DEFINE_RPMPD_PAIR(msm8939, vddmd, vddmd_ao, SMPA, CORNER, 1);
144DEFINE_RPMPD_VFC(msm8939, vddmd_vfc, SMPA, 1);
145
146DEFINE_RPMPD_PAIR(msm8939, vddcx, vddcx_ao, SMPA, CORNER, 2);
147DEFINE_RPMPD_VFC(msm8939, vddcx_vfc, SMPA, 2);
148
149DEFINE_RPMPD_PAIR(msm8939, vddmx, vddmx_ao, LDOA, CORNER, 3);
150
151static struct rpmpd *msm8939_rpmpds[] = {
152 [MSM8939_VDDMDCX] = &msm8939_vddmd,
153 [MSM8939_VDDMDCX_AO] = &msm8939_vddmd_ao,
154 [MSM8939_VDDMDCX_VFC] = &msm8939_vddmd_vfc,
155 [MSM8939_VDDCX] = &msm8939_vddcx,
156 [MSM8939_VDDCX_AO] = &msm8939_vddcx_ao,
157 [MSM8939_VDDCX_VFC] = &msm8939_vddcx_vfc,
158 [MSM8939_VDDMX] = &msm8939_vddmx,
159 [MSM8939_VDDMX_AO] = &msm8939_vddmx_ao,
160};
161
162static const struct rpmpd_desc msm8939_desc = {
163 .rpmpds = msm8939_rpmpds,
164 .num_pds = ARRAY_SIZE(msm8939_rpmpds),
165 .max_state = MAX_CORNER_RPMPD_STATE,
166};
167
168
169DEFINE_RPMPD_PAIR(msm8916, vddcx, vddcx_ao, SMPA, CORNER, 1);
170DEFINE_RPMPD_PAIR(msm8916, vddmx, vddmx_ao, LDOA, CORNER, 3);
171
172DEFINE_RPMPD_VFC(msm8916, vddcx_vfc, SMPA, 1);
173
174static struct rpmpd *msm8916_rpmpds[] = {
175 [MSM8916_VDDCX] = &msm8916_vddcx,
176 [MSM8916_VDDCX_AO] = &msm8916_vddcx_ao,
177 [MSM8916_VDDCX_VFC] = &msm8916_vddcx_vfc,
178 [MSM8916_VDDMX] = &msm8916_vddmx,
179 [MSM8916_VDDMX_AO] = &msm8916_vddmx_ao,
180};
181
182static const struct rpmpd_desc msm8916_desc = {
183 .rpmpds = msm8916_rpmpds,
184 .num_pds = ARRAY_SIZE(msm8916_rpmpds),
185 .max_state = MAX_CORNER_RPMPD_STATE,
186};
187
188
189DEFINE_RPMPD_PAIR(msm8976, vddcx, vddcx_ao, SMPA, LEVEL, 2);
190DEFINE_RPMPD_PAIR(msm8976, vddmx, vddmx_ao, SMPA, LEVEL, 6);
191
192DEFINE_RPMPD_VFL(msm8976, vddcx_vfl, RWSC, 2);
193DEFINE_RPMPD_VFL(msm8976, vddmx_vfl, RWSM, 6);
194
195static struct rpmpd *msm8976_rpmpds[] = {
196 [MSM8976_VDDCX] = &msm8976_vddcx,
197 [MSM8976_VDDCX_AO] = &msm8976_vddcx_ao,
198 [MSM8976_VDDCX_VFL] = &msm8976_vddcx_vfl,
199 [MSM8976_VDDMX] = &msm8976_vddmx,
200 [MSM8976_VDDMX_AO] = &msm8976_vddmx_ao,
201 [MSM8976_VDDMX_VFL] = &msm8976_vddmx_vfl,
202};
203
204static const struct rpmpd_desc msm8976_desc = {
205 .rpmpds = msm8976_rpmpds,
206 .num_pds = ARRAY_SIZE(msm8976_rpmpds),
207 .max_state = RPM_SMD_LEVEL_TURBO_HIGH,
208};
209
210
211DEFINE_RPMPD_PAIR(msm8994, vddcx, vddcx_ao, SMPA, CORNER, 1);
212DEFINE_RPMPD_PAIR(msm8994, vddmx, vddmx_ao, SMPA, CORNER, 2);
213
214DEFINE_RPMPD_CORNER(msm8994, vddgfx, SMPB, 2);
215
216DEFINE_RPMPD_VFC(msm8994, vddcx_vfc, SMPA, 1);
217DEFINE_RPMPD_VFC(msm8994, vddgfx_vfc, SMPB, 2);
218
219static struct rpmpd *msm8994_rpmpds[] = {
220 [MSM8994_VDDCX] = &msm8994_vddcx,
221 [MSM8994_VDDCX_AO] = &msm8994_vddcx_ao,
222 [MSM8994_VDDCX_VFC] = &msm8994_vddcx_vfc,
223 [MSM8994_VDDMX] = &msm8994_vddmx,
224 [MSM8994_VDDMX_AO] = &msm8994_vddmx_ao,
225 [MSM8994_VDDGFX] = &msm8994_vddgfx,
226 [MSM8994_VDDGFX_VFC] = &msm8994_vddgfx_vfc,
227};
228
229static const struct rpmpd_desc msm8994_desc = {
230 .rpmpds = msm8994_rpmpds,
231 .num_pds = ARRAY_SIZE(msm8994_rpmpds),
232 .max_state = MAX_CORNER_RPMPD_STATE,
233};
234
235
236DEFINE_RPMPD_PAIR(msm8996, vddcx, vddcx_ao, SMPA, CORNER, 1);
237DEFINE_RPMPD_PAIR(msm8996, vddmx, vddmx_ao, SMPA, CORNER, 2);
238DEFINE_RPMPD_CORNER(msm8996, vddsscx, LDOA, 26);
239
240DEFINE_RPMPD_VFC(msm8996, vddcx_vfc, SMPA, 1);
241DEFINE_RPMPD_VFC(msm8996, vddsscx_vfc, LDOA, 26);
242
243static struct rpmpd *msm8996_rpmpds[] = {
244 [MSM8996_VDDCX] = &msm8996_vddcx,
245 [MSM8996_VDDCX_AO] = &msm8996_vddcx_ao,
246 [MSM8996_VDDCX_VFC] = &msm8996_vddcx_vfc,
247 [MSM8996_VDDMX] = &msm8996_vddmx,
248 [MSM8996_VDDMX_AO] = &msm8996_vddmx_ao,
249 [MSM8996_VDDSSCX] = &msm8996_vddsscx,
250 [MSM8996_VDDSSCX_VFC] = &msm8996_vddsscx_vfc,
251};
252
253static const struct rpmpd_desc msm8996_desc = {
254 .rpmpds = msm8996_rpmpds,
255 .num_pds = ARRAY_SIZE(msm8996_rpmpds),
256 .max_state = MAX_CORNER_RPMPD_STATE,
257};
258
259
260DEFINE_RPMPD_PAIR(msm8998, vddcx, vddcx_ao, RWCX, LEVEL, 0);
261DEFINE_RPMPD_VFL(msm8998, vddcx_vfl, RWCX, 0);
262
263DEFINE_RPMPD_PAIR(msm8998, vddmx, vddmx_ao, RWMX, LEVEL, 0);
264DEFINE_RPMPD_VFL(msm8998, vddmx_vfl, RWMX, 0);
265
266DEFINE_RPMPD_LEVEL(msm8998, vdd_ssccx, RWSC, 0);
267DEFINE_RPMPD_VFL(msm8998, vdd_ssccx_vfl, RWSC, 0);
268
269DEFINE_RPMPD_LEVEL(msm8998, vdd_sscmx, RWSM, 0);
270DEFINE_RPMPD_VFL(msm8998, vdd_sscmx_vfl, RWSM, 0);
271
272static struct rpmpd *msm8998_rpmpds[] = {
273 [MSM8998_VDDCX] = &msm8998_vddcx,
274 [MSM8998_VDDCX_AO] = &msm8998_vddcx_ao,
275 [MSM8998_VDDCX_VFL] = &msm8998_vddcx_vfl,
276 [MSM8998_VDDMX] = &msm8998_vddmx,
277 [MSM8998_VDDMX_AO] = &msm8998_vddmx_ao,
278 [MSM8998_VDDMX_VFL] = &msm8998_vddmx_vfl,
279 [MSM8998_SSCCX] = &msm8998_vdd_ssccx,
280 [MSM8998_SSCCX_VFL] = &msm8998_vdd_ssccx_vfl,
281 [MSM8998_SSCMX] = &msm8998_vdd_sscmx,
282 [MSM8998_SSCMX_VFL] = &msm8998_vdd_sscmx_vfl,
283};
284
285static const struct rpmpd_desc msm8998_desc = {
286 .rpmpds = msm8998_rpmpds,
287 .num_pds = ARRAY_SIZE(msm8998_rpmpds),
288 .max_state = RPM_SMD_LEVEL_BINNING,
289};
290
291
292DEFINE_RPMPD_PAIR(qcs404, vddmx, vddmx_ao, RWMX, LEVEL, 0);
293DEFINE_RPMPD_VFL(qcs404, vddmx_vfl, RWMX, 0);
294
295DEFINE_RPMPD_LEVEL(qcs404, vdd_lpicx, RWLC, 0);
296DEFINE_RPMPD_VFL(qcs404, vdd_lpicx_vfl, RWLC, 0);
297
298DEFINE_RPMPD_LEVEL(qcs404, vdd_lpimx, RWLM, 0);
299DEFINE_RPMPD_VFL(qcs404, vdd_lpimx_vfl, RWLM, 0);
300
301static struct rpmpd *qcs404_rpmpds[] = {
302 [QCS404_VDDMX] = &qcs404_vddmx,
303 [QCS404_VDDMX_AO] = &qcs404_vddmx_ao,
304 [QCS404_VDDMX_VFL] = &qcs404_vddmx_vfl,
305 [QCS404_LPICX] = &qcs404_vdd_lpicx,
306 [QCS404_LPICX_VFL] = &qcs404_vdd_lpicx_vfl,
307 [QCS404_LPIMX] = &qcs404_vdd_lpimx,
308 [QCS404_LPIMX_VFL] = &qcs404_vdd_lpimx_vfl,
309};
310
311static const struct rpmpd_desc qcs404_desc = {
312 .rpmpds = qcs404_rpmpds,
313 .num_pds = ARRAY_SIZE(qcs404_rpmpds),
314 .max_state = RPM_SMD_LEVEL_BINNING,
315};
316
317
318DEFINE_RPMPD_PAIR(sdm660, vddcx, vddcx_ao, RWCX, LEVEL, 0);
319DEFINE_RPMPD_VFL(sdm660, vddcx_vfl, RWCX, 0);
320
321DEFINE_RPMPD_PAIR(sdm660, vddmx, vddmx_ao, RWMX, LEVEL, 0);
322DEFINE_RPMPD_VFL(sdm660, vddmx_vfl, RWMX, 0);
323
324DEFINE_RPMPD_LEVEL(sdm660, vdd_ssccx, RWLC, 0);
325DEFINE_RPMPD_VFL(sdm660, vdd_ssccx_vfl, RWLC, 0);
326
327DEFINE_RPMPD_LEVEL(sdm660, vdd_sscmx, RWLM, 0);
328DEFINE_RPMPD_VFL(sdm660, vdd_sscmx_vfl, RWLM, 0);
329
330static struct rpmpd *sdm660_rpmpds[] = {
331 [SDM660_VDDCX] = &sdm660_vddcx,
332 [SDM660_VDDCX_AO] = &sdm660_vddcx_ao,
333 [SDM660_VDDCX_VFL] = &sdm660_vddcx_vfl,
334 [SDM660_VDDMX] = &sdm660_vddmx,
335 [SDM660_VDDMX_AO] = &sdm660_vddmx_ao,
336 [SDM660_VDDMX_VFL] = &sdm660_vddmx_vfl,
337 [SDM660_SSCCX] = &sdm660_vdd_ssccx,
338 [SDM660_SSCCX_VFL] = &sdm660_vdd_ssccx_vfl,
339 [SDM660_SSCMX] = &sdm660_vdd_sscmx,
340 [SDM660_SSCMX_VFL] = &sdm660_vdd_sscmx_vfl,
341};
342
343static const struct rpmpd_desc sdm660_desc = {
344 .rpmpds = sdm660_rpmpds,
345 .num_pds = ARRAY_SIZE(sdm660_rpmpds),
346 .max_state = RPM_SMD_LEVEL_TURBO,
347};
348
349
350DEFINE_RPMPD_PAIR(sm6115, vddcx, vddcx_ao, RWCX, LEVEL, 0);
351DEFINE_RPMPD_VFL(sm6115, vddcx_vfl, RWCX, 0);
352
353DEFINE_RPMPD_PAIR(sm6115, vddmx, vddmx_ao, RWMX, LEVEL, 0);
354DEFINE_RPMPD_VFL(sm6115, vddmx_vfl, RWMX, 0);
355
356DEFINE_RPMPD_LEVEL(sm6115, vdd_lpi_cx, RWLC, 0);
357DEFINE_RPMPD_LEVEL(sm6115, vdd_lpi_mx, RWLM, 0);
358
359static struct rpmpd *sm6115_rpmpds[] = {
360 [SM6115_VDDCX] = &sm6115_vddcx,
361 [SM6115_VDDCX_AO] = &sm6115_vddcx_ao,
362 [SM6115_VDDCX_VFL] = &sm6115_vddcx_vfl,
363 [SM6115_VDDMX] = &sm6115_vddmx,
364 [SM6115_VDDMX_AO] = &sm6115_vddmx_ao,
365 [SM6115_VDDMX_VFL] = &sm6115_vddmx_vfl,
366 [SM6115_VDD_LPI_CX] = &sm6115_vdd_lpi_cx,
367 [SM6115_VDD_LPI_MX] = &sm6115_vdd_lpi_mx,
368};
369
370static const struct rpmpd_desc sm6115_desc = {
371 .rpmpds = sm6115_rpmpds,
372 .num_pds = ARRAY_SIZE(sm6115_rpmpds),
373 .max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
374};
375
376static const struct of_device_id rpmpd_match_table[] = {
377 { .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
378 { .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
379 { .compatible = "qcom,msm8939-rpmpd", .data = &msm8939_desc },
380 { .compatible = "qcom,msm8976-rpmpd", .data = &msm8976_desc },
381 { .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
382 { .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
383 { .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
384 { .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
385 { .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
386 { .compatible = "qcom,sm6115-rpmpd", .data = &sm6115_desc },
387 { }
388};
389MODULE_DEVICE_TABLE(of, rpmpd_match_table);
390
391static int rpmpd_send_enable(struct rpmpd *pd, bool enable)
392{
393 struct rpmpd_req req = {
394 .key = KEY_ENABLE,
395 .nbytes = cpu_to_le32(sizeof(u32)),
396 .value = cpu_to_le32(enable),
397 };
398
399 return qcom_rpm_smd_write(pd->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
400 pd->res_type, pd->res_id, &req, sizeof(req));
401}
402
403static int rpmpd_send_corner(struct rpmpd *pd, int state, unsigned int corner)
404{
405 struct rpmpd_req req = {
406 .key = pd->key,
407 .nbytes = cpu_to_le32(sizeof(u32)),
408 .value = cpu_to_le32(corner),
409 };
410
411 return qcom_rpm_smd_write(pd->rpm, state, pd->res_type, pd->res_id,
412 &req, sizeof(req));
413};
414
415static void to_active_sleep(struct rpmpd *pd, unsigned int corner,
416 unsigned int *active, unsigned int *sleep)
417{
418 *active = corner;
419
420 if (pd->active_only)
421 *sleep = 0;
422 else
423 *sleep = *active;
424}
425
426static int rpmpd_aggregate_corner(struct rpmpd *pd)
427{
428 int ret;
429 struct rpmpd *peer = pd->peer;
430 unsigned int active_corner, sleep_corner;
431 unsigned int this_active_corner = 0, this_sleep_corner = 0;
432 unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
433
434 to_active_sleep(pd, pd->corner, &this_active_corner, &this_sleep_corner);
435
436 if (peer && peer->enabled)
437 to_active_sleep(peer, peer->corner, &peer_active_corner,
438 &peer_sleep_corner);
439
440 active_corner = max(this_active_corner, peer_active_corner);
441
442 ret = rpmpd_send_corner(pd, QCOM_SMD_RPM_ACTIVE_STATE, active_corner);
443 if (ret)
444 return ret;
445
446 sleep_corner = max(this_sleep_corner, peer_sleep_corner);
447
448 return rpmpd_send_corner(pd, QCOM_SMD_RPM_SLEEP_STATE, sleep_corner);
449}
450
451static int rpmpd_power_on(struct generic_pm_domain *domain)
452{
453 int ret;
454 struct rpmpd *pd = domain_to_rpmpd(domain);
455
456 mutex_lock(&rpmpd_lock);
457
458 ret = rpmpd_send_enable(pd, true);
459 if (ret)
460 goto out;
461
462 pd->enabled = true;
463
464 if (pd->corner)
465 ret = rpmpd_aggregate_corner(pd);
466
467out:
468 mutex_unlock(&rpmpd_lock);
469
470 return ret;
471}
472
473static int rpmpd_power_off(struct generic_pm_domain *domain)
474{
475 int ret;
476 struct rpmpd *pd = domain_to_rpmpd(domain);
477
478 mutex_lock(&rpmpd_lock);
479
480 ret = rpmpd_send_enable(pd, false);
481 if (!ret)
482 pd->enabled = false;
483
484 mutex_unlock(&rpmpd_lock);
485
486 return ret;
487}
488
489static int rpmpd_set_performance(struct generic_pm_domain *domain,
490 unsigned int state)
491{
492 int ret = 0;
493 struct rpmpd *pd = domain_to_rpmpd(domain);
494
495 if (state > pd->max_state)
496 state = pd->max_state;
497
498 mutex_lock(&rpmpd_lock);
499
500 pd->corner = state;
501
502
503 if (!pd->enabled && pd->key != KEY_FLOOR_CORNER &&
504 pd->key != KEY_FLOOR_LEVEL)
505 goto out;
506
507 ret = rpmpd_aggregate_corner(pd);
508
509out:
510 mutex_unlock(&rpmpd_lock);
511
512 return ret;
513}
514
515static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
516 struct dev_pm_opp *opp)
517{
518 return dev_pm_opp_get_level(opp);
519}
520
521static int rpmpd_probe(struct platform_device *pdev)
522{
523 int i;
524 size_t num;
525 struct genpd_onecell_data *data;
526 struct qcom_smd_rpm *rpm;
527 struct rpmpd **rpmpds;
528 const struct rpmpd_desc *desc;
529
530 rpm = dev_get_drvdata(pdev->dev.parent);
531 if (!rpm) {
532 dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
533 return -ENODEV;
534 }
535
536 desc = of_device_get_match_data(&pdev->dev);
537 if (!desc)
538 return -EINVAL;
539
540 rpmpds = desc->rpmpds;
541 num = desc->num_pds;
542
543 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
544 if (!data)
545 return -ENOMEM;
546
547 data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains),
548 GFP_KERNEL);
549 data->num_domains = num;
550
551 for (i = 0; i < num; i++) {
552 if (!rpmpds[i]) {
553 dev_warn(&pdev->dev, "rpmpds[] with empty entry at index=%d\n",
554 i);
555 continue;
556 }
557
558 rpmpds[i]->rpm = rpm;
559 rpmpds[i]->max_state = desc->max_state;
560 rpmpds[i]->pd.power_off = rpmpd_power_off;
561 rpmpds[i]->pd.power_on = rpmpd_power_on;
562 rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
563 rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
564 pm_genpd_init(&rpmpds[i]->pd, NULL, true);
565
566 data->domains[i] = &rpmpds[i]->pd;
567 }
568
569 return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
570}
571
572static struct platform_driver rpmpd_driver = {
573 .driver = {
574 .name = "qcom-rpmpd",
575 .of_match_table = rpmpd_match_table,
576 .suppress_bind_attrs = true,
577 },
578 .probe = rpmpd_probe,
579};
580
581static int __init rpmpd_init(void)
582{
583 return platform_driver_register(&rpmpd_driver);
584}
585core_initcall(rpmpd_init);
586
587MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPM Power Domain Driver");
588MODULE_LICENSE("GPL v2");
589
