tjh.dev
Linux kernel mirror (for testing)
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linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */
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/* Resource types:
21 * RPMPD_X is X encoded as a little-endian, lower-case, ASCII string */
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/* Operation Keys */
34#define KEY_CORNER 0x6e726f63 /* corn */
35#define KEY_ENABLE 0x6e657773 /* swen */
36#define KEY_FLOOR_CORNER 0x636676 /* vfc */
37#define KEY_FLOOR_LEVEL 0x6c6676 /* vfl */
38#define KEY_LEVEL 0x6c766c76 /* vlvl */
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/* mdm9607 RPM Power Domains */
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/* msm8939 RPM Power Domains */
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/* msm8916 RPM Power Domains */
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/* msm8953 RPM Power Domains */
189DEFINE_RPMPD_PAIR(msm8953, vddmd, vddmd_ao, SMPA, LEVEL, 1);
190DEFINE_RPMPD_PAIR(msm8953, vddcx, vddcx_ao, SMPA, LEVEL, 2);
191DEFINE_RPMPD_PAIR(msm8953, vddmx, vddmx_ao, SMPA, LEVEL, 7);
192
193DEFINE_RPMPD_VFL(msm8953, vddcx_vfl, SMPA, 2);
194
195static struct rpmpd *msm8953_rpmpds[] = {
196 [MSM8953_VDDMD] = &msm8953_vddmd,
197 [MSM8953_VDDMD_AO] = &msm8953_vddmd_ao,
198 [MSM8953_VDDCX] = &msm8953_vddcx,
199 [MSM8953_VDDCX_AO] = &msm8953_vddcx_ao,
200 [MSM8953_VDDCX_VFL] = &msm8953_vddcx_vfl,
201 [MSM8953_VDDMX] = &msm8953_vddmx,
202 [MSM8953_VDDMX_AO] = &msm8953_vddmx_ao,
203};
204
205static const struct rpmpd_desc msm8953_desc = {
206 .rpmpds = msm8953_rpmpds,
207 .num_pds = ARRAY_SIZE(msm8953_rpmpds),
208 .max_state = RPM_SMD_LEVEL_TURBO,
209};
210
211/* msm8976 RPM Power Domains */
212DEFINE_RPMPD_PAIR(msm8976, vddcx, vddcx_ao, SMPA, LEVEL, 2);
213DEFINE_RPMPD_PAIR(msm8976, vddmx, vddmx_ao, SMPA, LEVEL, 6);
214
215DEFINE_RPMPD_VFL(msm8976, vddcx_vfl, RWSC, 2);
216DEFINE_RPMPD_VFL(msm8976, vddmx_vfl, RWSM, 6);
217
218static struct rpmpd *msm8976_rpmpds[] = {
219 [MSM8976_VDDCX] = &msm8976_vddcx,
220 [MSM8976_VDDCX_AO] = &msm8976_vddcx_ao,
221 [MSM8976_VDDCX_VFL] = &msm8976_vddcx_vfl,
222 [MSM8976_VDDMX] = &msm8976_vddmx,
223 [MSM8976_VDDMX_AO] = &msm8976_vddmx_ao,
224 [MSM8976_VDDMX_VFL] = &msm8976_vddmx_vfl,
225};
226
227static const struct rpmpd_desc msm8976_desc = {
228 .rpmpds = msm8976_rpmpds,
229 .num_pds = ARRAY_SIZE(msm8976_rpmpds),
230 .max_state = RPM_SMD_LEVEL_TURBO_HIGH,
231};
232
233/* msm8994 RPM Power domains */
234DEFINE_RPMPD_PAIR(msm8994, vddcx, vddcx_ao, SMPA, CORNER, 1);
235DEFINE_RPMPD_PAIR(msm8994, vddmx, vddmx_ao, SMPA, CORNER, 2);
236/* Attention! *Some* 8994 boards with pm8004 may use SMPC here! */
237DEFINE_RPMPD_CORNER(msm8994, vddgfx, SMPB, 2);
238
239DEFINE_RPMPD_VFC(msm8994, vddcx_vfc, SMPA, 1);
240DEFINE_RPMPD_VFC(msm8994, vddgfx_vfc, SMPB, 2);
241
242static struct rpmpd *msm8994_rpmpds[] = {
243 [MSM8994_VDDCX] = &msm8994_vddcx,
244 [MSM8994_VDDCX_AO] = &msm8994_vddcx_ao,
245 [MSM8994_VDDCX_VFC] = &msm8994_vddcx_vfc,
246 [MSM8994_VDDMX] = &msm8994_vddmx,
247 [MSM8994_VDDMX_AO] = &msm8994_vddmx_ao,
248 [MSM8994_VDDGFX] = &msm8994_vddgfx,
249 [MSM8994_VDDGFX_VFC] = &msm8994_vddgfx_vfc,
250};
251
252static const struct rpmpd_desc msm8994_desc = {
253 .rpmpds = msm8994_rpmpds,
254 .num_pds = ARRAY_SIZE(msm8994_rpmpds),
255 .max_state = MAX_CORNER_RPMPD_STATE,
256};
257
258/* msm8996 RPM Power domains */
259DEFINE_RPMPD_PAIR(msm8996, vddcx, vddcx_ao, SMPA, CORNER, 1);
260DEFINE_RPMPD_PAIR(msm8996, vddmx, vddmx_ao, SMPA, CORNER, 2);
261DEFINE_RPMPD_CORNER(msm8996, vddsscx, LDOA, 26);
262
263DEFINE_RPMPD_VFC(msm8996, vddcx_vfc, SMPA, 1);
264DEFINE_RPMPD_VFC(msm8996, vddsscx_vfc, LDOA, 26);
265
266static struct rpmpd *msm8996_rpmpds[] = {
267 [MSM8996_VDDCX] = &msm8996_vddcx,
268 [MSM8996_VDDCX_AO] = &msm8996_vddcx_ao,
269 [MSM8996_VDDCX_VFC] = &msm8996_vddcx_vfc,
270 [MSM8996_VDDMX] = &msm8996_vddmx,
271 [MSM8996_VDDMX_AO] = &msm8996_vddmx_ao,
272 [MSM8996_VDDSSCX] = &msm8996_vddsscx,
273 [MSM8996_VDDSSCX_VFC] = &msm8996_vddsscx_vfc,
274};
275
276static const struct rpmpd_desc msm8996_desc = {
277 .rpmpds = msm8996_rpmpds,
278 .num_pds = ARRAY_SIZE(msm8996_rpmpds),
279 .max_state = MAX_CORNER_RPMPD_STATE,
280};
281
282/* msm8998 RPM Power domains */
283DEFINE_RPMPD_PAIR(msm8998, vddcx, vddcx_ao, RWCX, LEVEL, 0);
284DEFINE_RPMPD_VFL(msm8998, vddcx_vfl, RWCX, 0);
285
286DEFINE_RPMPD_PAIR(msm8998, vddmx, vddmx_ao, RWMX, LEVEL, 0);
287DEFINE_RPMPD_VFL(msm8998, vddmx_vfl, RWMX, 0);
288
289DEFINE_RPMPD_LEVEL(msm8998, vdd_ssccx, RWSC, 0);
290DEFINE_RPMPD_VFL(msm8998, vdd_ssccx_vfl, RWSC, 0);
291
292DEFINE_RPMPD_LEVEL(msm8998, vdd_sscmx, RWSM, 0);
293DEFINE_RPMPD_VFL(msm8998, vdd_sscmx_vfl, RWSM, 0);
294
295static struct rpmpd *msm8998_rpmpds[] = {
296 [MSM8998_VDDCX] = &msm8998_vddcx,
297 [MSM8998_VDDCX_AO] = &msm8998_vddcx_ao,
298 [MSM8998_VDDCX_VFL] = &msm8998_vddcx_vfl,
299 [MSM8998_VDDMX] = &msm8998_vddmx,
300 [MSM8998_VDDMX_AO] = &msm8998_vddmx_ao,
301 [MSM8998_VDDMX_VFL] = &msm8998_vddmx_vfl,
302 [MSM8998_SSCCX] = &msm8998_vdd_ssccx,
303 [MSM8998_SSCCX_VFL] = &msm8998_vdd_ssccx_vfl,
304 [MSM8998_SSCMX] = &msm8998_vdd_sscmx,
305 [MSM8998_SSCMX_VFL] = &msm8998_vdd_sscmx_vfl,
306};
307
308static const struct rpmpd_desc msm8998_desc = {
309 .rpmpds = msm8998_rpmpds,
310 .num_pds = ARRAY_SIZE(msm8998_rpmpds),
311 .max_state = RPM_SMD_LEVEL_BINNING,
312};
313
314/* qcs404 RPM Power domains */
315DEFINE_RPMPD_PAIR(qcs404, vddmx, vddmx_ao, RWMX, LEVEL, 0);
316DEFINE_RPMPD_VFL(qcs404, vddmx_vfl, RWMX, 0);
317
318DEFINE_RPMPD_LEVEL(qcs404, vdd_lpicx, RWLC, 0);
319DEFINE_RPMPD_VFL(qcs404, vdd_lpicx_vfl, RWLC, 0);
320
321DEFINE_RPMPD_LEVEL(qcs404, vdd_lpimx, RWLM, 0);
322DEFINE_RPMPD_VFL(qcs404, vdd_lpimx_vfl, RWLM, 0);
323
324static struct rpmpd *qcs404_rpmpds[] = {
325 [QCS404_VDDMX] = &qcs404_vddmx,
326 [QCS404_VDDMX_AO] = &qcs404_vddmx_ao,
327 [QCS404_VDDMX_VFL] = &qcs404_vddmx_vfl,
328 [QCS404_LPICX] = &qcs404_vdd_lpicx,
329 [QCS404_LPICX_VFL] = &qcs404_vdd_lpicx_vfl,
330 [QCS404_LPIMX] = &qcs404_vdd_lpimx,
331 [QCS404_LPIMX_VFL] = &qcs404_vdd_lpimx_vfl,
332};
333
334static const struct rpmpd_desc qcs404_desc = {
335 .rpmpds = qcs404_rpmpds,
336 .num_pds = ARRAY_SIZE(qcs404_rpmpds),
337 .max_state = RPM_SMD_LEVEL_BINNING,
338};
339
340/* sdm660 RPM Power domains */
341DEFINE_RPMPD_PAIR(sdm660, vddcx, vddcx_ao, RWCX, LEVEL, 0);
342DEFINE_RPMPD_VFL(sdm660, vddcx_vfl, RWCX, 0);
343
344DEFINE_RPMPD_PAIR(sdm660, vddmx, vddmx_ao, RWMX, LEVEL, 0);
345DEFINE_RPMPD_VFL(sdm660, vddmx_vfl, RWMX, 0);
346
347DEFINE_RPMPD_LEVEL(sdm660, vdd_ssccx, RWLC, 0);
348DEFINE_RPMPD_VFL(sdm660, vdd_ssccx_vfl, RWLC, 0);
349
350DEFINE_RPMPD_LEVEL(sdm660, vdd_sscmx, RWLM, 0);
351DEFINE_RPMPD_VFL(sdm660, vdd_sscmx_vfl, RWLM, 0);
352
353static struct rpmpd *sdm660_rpmpds[] = {
354 [SDM660_VDDCX] = &sdm660_vddcx,
355 [SDM660_VDDCX_AO] = &sdm660_vddcx_ao,
356 [SDM660_VDDCX_VFL] = &sdm660_vddcx_vfl,
357 [SDM660_VDDMX] = &sdm660_vddmx,
358 [SDM660_VDDMX_AO] = &sdm660_vddmx_ao,
359 [SDM660_VDDMX_VFL] = &sdm660_vddmx_vfl,
360 [SDM660_SSCCX] = &sdm660_vdd_ssccx,
361 [SDM660_SSCCX_VFL] = &sdm660_vdd_ssccx_vfl,
362 [SDM660_SSCMX] = &sdm660_vdd_sscmx,
363 [SDM660_SSCMX_VFL] = &sdm660_vdd_sscmx_vfl,
364};
365
366static const struct rpmpd_desc sdm660_desc = {
367 .rpmpds = sdm660_rpmpds,
368 .num_pds = ARRAY_SIZE(sdm660_rpmpds),
369 .max_state = RPM_SMD_LEVEL_TURBO,
370};
371
372/* sm4250/6115 RPM Power domains */
373DEFINE_RPMPD_PAIR(sm6115, vddcx, vddcx_ao, RWCX, LEVEL, 0);
374DEFINE_RPMPD_VFL(sm6115, vddcx_vfl, RWCX, 0);
375
376DEFINE_RPMPD_PAIR(sm6115, vddmx, vddmx_ao, RWMX, LEVEL, 0);
377DEFINE_RPMPD_VFL(sm6115, vddmx_vfl, RWMX, 0);
378
379DEFINE_RPMPD_LEVEL(sm6115, vdd_lpi_cx, RWLC, 0);
380DEFINE_RPMPD_LEVEL(sm6115, vdd_lpi_mx, RWLM, 0);
381
382static struct rpmpd *sm6115_rpmpds[] = {
383 [SM6115_VDDCX] = &sm6115_vddcx,
384 [SM6115_VDDCX_AO] = &sm6115_vddcx_ao,
385 [SM6115_VDDCX_VFL] = &sm6115_vddcx_vfl,
386 [SM6115_VDDMX] = &sm6115_vddmx,
387 [SM6115_VDDMX_AO] = &sm6115_vddmx_ao,
388 [SM6115_VDDMX_VFL] = &sm6115_vddmx_vfl,
389 [SM6115_VDD_LPI_CX] = &sm6115_vdd_lpi_cx,
390 [SM6115_VDD_LPI_MX] = &sm6115_vdd_lpi_mx,
391};
392
393static const struct rpmpd_desc sm6115_desc = {
394 .rpmpds = sm6115_rpmpds,
395 .num_pds = ARRAY_SIZE(sm6115_rpmpds),
396 .max_state = RPM_SMD_LEVEL_TURBO_NO_CPR,
397};
398
399static const struct of_device_id rpmpd_match_table[] = {
400 { .compatible = "qcom,mdm9607-rpmpd", .data = &mdm9607_desc },
401 { .compatible = "qcom,msm8916-rpmpd", .data = &msm8916_desc },
402 { .compatible = "qcom,msm8939-rpmpd", .data = &msm8939_desc },
403 { .compatible = "qcom,msm8953-rpmpd", .data = &msm8953_desc },
404 { .compatible = "qcom,msm8976-rpmpd", .data = &msm8976_desc },
405 { .compatible = "qcom,msm8994-rpmpd", .data = &msm8994_desc },
406 { .compatible = "qcom,msm8996-rpmpd", .data = &msm8996_desc },
407 { .compatible = "qcom,msm8998-rpmpd", .data = &msm8998_desc },
408 { .compatible = "qcom,qcs404-rpmpd", .data = &qcs404_desc },
409 { .compatible = "qcom,sdm660-rpmpd", .data = &sdm660_desc },
410 { .compatible = "qcom,sm6115-rpmpd", .data = &sm6115_desc },
411 { }
412};
413MODULE_DEVICE_TABLE(of, rpmpd_match_table);
414
415static int rpmpd_send_enable(struct rpmpd *pd, bool enable)
416{
417 struct rpmpd_req req = {
418 .key = KEY_ENABLE,
419 .nbytes = cpu_to_le32(sizeof(u32)),
420 .value = cpu_to_le32(enable),
421 };
422
423 return qcom_rpm_smd_write(pd->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
424 pd->res_type, pd->res_id, &req, sizeof(req));
425}
426
427static int rpmpd_send_corner(struct rpmpd *pd, int state, unsigned int corner)
428{
429 struct rpmpd_req req = {
430 .key = pd->key,
431 .nbytes = cpu_to_le32(sizeof(u32)),
432 .value = cpu_to_le32(corner),
433 };
434
435 return qcom_rpm_smd_write(pd->rpm, state, pd->res_type, pd->res_id,
436 &req, sizeof(req));
437};
438
439static void to_active_sleep(struct rpmpd *pd, unsigned int corner,
440 unsigned int *active, unsigned int *sleep)
441{
442 *active = corner;
443
444 if (pd->active_only)
445 *sleep = 0;
446 else
447 *sleep = *active;
448}
449
450static int rpmpd_aggregate_corner(struct rpmpd *pd)
451{
452 int ret;
453 struct rpmpd *peer = pd->peer;
454 unsigned int active_corner, sleep_corner;
455 unsigned int this_active_corner = 0, this_sleep_corner = 0;
456 unsigned int peer_active_corner = 0, peer_sleep_corner = 0;
457
458 to_active_sleep(pd, pd->corner, &this_active_corner, &this_sleep_corner);
459
460 if (peer && peer->enabled)
461 to_active_sleep(peer, peer->corner, &peer_active_corner,
462 &peer_sleep_corner);
463
464 active_corner = max(this_active_corner, peer_active_corner);
465
466 ret = rpmpd_send_corner(pd, QCOM_SMD_RPM_ACTIVE_STATE, active_corner);
467 if (ret)
468 return ret;
469
470 sleep_corner = max(this_sleep_corner, peer_sleep_corner);
471
472 return rpmpd_send_corner(pd, QCOM_SMD_RPM_SLEEP_STATE, sleep_corner);
473}
474
475static int rpmpd_power_on(struct generic_pm_domain *domain)
476{
477 int ret;
478 struct rpmpd *pd = domain_to_rpmpd(domain);
479
480 mutex_lock(&rpmpd_lock);
481
482 ret = rpmpd_send_enable(pd, true);
483 if (ret)
484 goto out;
485
486 pd->enabled = true;
487
488 if (pd->corner)
489 ret = rpmpd_aggregate_corner(pd);
490
491out:
492 mutex_unlock(&rpmpd_lock);
493
494 return ret;
495}
496
497static int rpmpd_power_off(struct generic_pm_domain *domain)
498{
499 int ret;
500 struct rpmpd *pd = domain_to_rpmpd(domain);
501
502 mutex_lock(&rpmpd_lock);
503
504 ret = rpmpd_send_enable(pd, false);
505 if (!ret)
506 pd->enabled = false;
507
508 mutex_unlock(&rpmpd_lock);
509
510 return ret;
511}
512
513static int rpmpd_set_performance(struct generic_pm_domain *domain,
514 unsigned int state)
515{
516 int ret = 0;
517 struct rpmpd *pd = domain_to_rpmpd(domain);
518
519 if (state > pd->max_state)
520 state = pd->max_state;
521
522 mutex_lock(&rpmpd_lock);
523
524 pd->corner = state;
525
526 /* Always send updates for vfc and vfl */
527 if (!pd->enabled && pd->key != KEY_FLOOR_CORNER &&
528 pd->key != KEY_FLOOR_LEVEL)
529 goto out;
530
531 ret = rpmpd_aggregate_corner(pd);
532
533out:
534 mutex_unlock(&rpmpd_lock);
535
536 return ret;
537}
538
539static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
540 struct dev_pm_opp *opp)
541{
542 return dev_pm_opp_get_level(opp);
543}
544
545static int rpmpd_probe(struct platform_device *pdev)
546{
547 int i;
548 size_t num;
549 struct genpd_onecell_data *data;
550 struct qcom_smd_rpm *rpm;
551 struct rpmpd **rpmpds;
552 const struct rpmpd_desc *desc;
553
554 rpm = dev_get_drvdata(pdev->dev.parent);
555 if (!rpm) {
556 dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
557 return -ENODEV;
558 }
559
560 desc = of_device_get_match_data(&pdev->dev);
561 if (!desc)
562 return -EINVAL;
563
564 rpmpds = desc->rpmpds;
565 num = desc->num_pds;
566
567 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
568 if (!data)
569 return -ENOMEM;
570
571 data->domains = devm_kcalloc(&pdev->dev, num, sizeof(*data->domains),
572 GFP_KERNEL);
573 data->num_domains = num;
574
575 for (i = 0; i < num; i++) {
576 if (!rpmpds[i]) {
577 dev_warn(&pdev->dev, "rpmpds[] with empty entry at index=%d\n",
578 i);
579 continue;
580 }
581
582 rpmpds[i]->rpm = rpm;
583 rpmpds[i]->max_state = desc->max_state;
584 rpmpds[i]->pd.power_off = rpmpd_power_off;
585 rpmpds[i]->pd.power_on = rpmpd_power_on;
586 rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
587 rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
588 pm_genpd_init(&rpmpds[i]->pd, NULL, true);
589
590 data->domains[i] = &rpmpds[i]->pd;
591 }
592
593 return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
594}
595
596static struct platform_driver rpmpd_driver = {
597 .driver = {
598 .name = "qcom-rpmpd",
599 .of_match_table = rpmpd_match_table,
600 .suppress_bind_attrs = true,
601 },
602 .probe = rpmpd_probe,
603};
604
605static int __init rpmpd_init(void)
606{
607 return platform_driver_register(&rpmpd_driver);
608}
609core_initcall(rpmpd_init);
610
611MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPM Power Domain Driver");
612MODULE_LICENSE("GPL v2");