drivers/pmdomain/qcom/rpmhpd.c

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