drivers/soc/qcom/rpmpd.c

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