drivers/remoteproc/qcom_wcnss.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Qualcomm Wireless Connectivity Subsystem Peripheral Image Loader
   4  *
   5  * Copyright (C) 2016 Linaro Ltd
   6  * Copyright (C) 2014 Sony Mobile Communications AB
   7  * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/delay.h>
  12 #include <linux/firmware.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/io.h>
  17 #include <linux/of_address.h>
  18 #include <linux/of_device.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/pm_domain.h>
  21 #include <linux/pm_runtime.h>
  22 #include <linux/qcom_scm.h>
  23 #include <linux/regulator/consumer.h>
  24 #include <linux/remoteproc.h>
  25 #include <linux/soc/qcom/mdt_loader.h>
  26 #include <linux/soc/qcom/smem.h>
  27 #include <linux/soc/qcom/smem_state.h>
  28 #include <linux/rpmsg/qcom_smd.h>
  29
  30 #include "qcom_common.h"
  31 #include "remoteproc_internal.h"
  32 #include "qcom_pil_info.h"
  33 #include "qcom_wcnss.h"
  34
  35 #define WCNSS_CRASH_REASON_SMEM         422
  36 #define WCNSS_FIRMWARE_NAME             "wcnss.mdt"
  37 #define WCNSS_PAS_ID                    6
  38 #define WCNSS_SSCTL_ID                  0x13
  39
  40 #define WCNSS_SPARE_NVBIN_DLND          BIT(25)
  41
  42 #define WCNSS_PMU_IRIS_XO_CFG           BIT(3)
  43 #define WCNSS_PMU_IRIS_XO_EN            BIT(4)
  44 #define WCNSS_PMU_GC_BUS_MUX_SEL_TOP    BIT(5)
  45 #define WCNSS_PMU_IRIS_XO_CFG_STS       BIT(6) /* 1: in progress, 0: done */
  46
  47 #define WCNSS_PMU_IRIS_RESET            BIT(7)
  48 #define WCNSS_PMU_IRIS_RESET_STS        BIT(8) /* 1: in progress, 0: done */
  49 #define WCNSS_PMU_IRIS_XO_READ          BIT(9)
  50 #define WCNSS_PMU_IRIS_XO_READ_STS      BIT(10)
  51
  52 #define WCNSS_PMU_XO_MODE_MASK          GENMASK(2, 1)
  53 #define WCNSS_PMU_XO_MODE_19p2          0
  54 #define WCNSS_PMU_XO_MODE_48            3
  55
  56 #define WCNSS_MAX_PDS                   2
  57
  58 struct wcnss_data {
  59         size_t pmu_offset;
  60         size_t spare_offset;
  61
  62         const char *pd_names[WCNSS_MAX_PDS];
  63         const struct wcnss_vreg_info *vregs;
  64         size_t num_vregs, num_pd_vregs;
  65 };
  66
  67 struct qcom_wcnss {
  68         struct device *dev;
  69         struct rproc *rproc;
  70
  71         void __iomem *pmu_cfg;
  72         void __iomem *spare_out;
  73
  74         bool use_48mhz_xo;
  75
  76         int wdog_irq;
  77         int fatal_irq;
  78         int ready_irq;
  79         int handover_irq;
  80         int stop_ack_irq;
  81
  82         struct qcom_smem_state *state;
  83         unsigned stop_bit;
  84
  85         struct mutex iris_lock;
  86         struct qcom_iris *iris;
  87
  88         struct device *pds[WCNSS_MAX_PDS];
  89         size_t num_pds;
  90         struct regulator_bulk_data *vregs;
  91         size_t num_vregs;
  92
  93         struct completion start_done;
  94         struct completion stop_done;
  95
  96         phys_addr_t mem_phys;
  97         phys_addr_t mem_reloc;
  98         void *mem_region;
  99         size_t mem_size;
 100
 101         struct qcom_rproc_subdev smd_subdev;
 102         struct qcom_sysmon *sysmon;
 103 };
 104
 105 static const struct wcnss_data riva_data = {
 106         .pmu_offset = 0x28,
 107         .spare_offset = 0xb4,
 108
 109         .vregs = (struct wcnss_vreg_info[]) {
 110                 { "vddmx",  1050000, 1150000, 0 },
 111                 { "vddcx",  1050000, 1150000, 0 },
 112                 { "vddpx",  1800000, 1800000, 0 },
 113         },
 114         .num_vregs = 3,
 115 };
 116
 117 static const struct wcnss_data pronto_v1_data = {
 118         .pmu_offset = 0x1004,
 119         .spare_offset = 0x1088,
 120
 121         .pd_names = { "mx", "cx" },
 122         .vregs = (struct wcnss_vreg_info[]) {
 123                 { "vddmx", 950000, 1150000, 0 },
 124                 { "vddcx", .super_turbo = true},
 125                 { "vddpx", 1800000, 1800000, 0 },
 126         },
 127         .num_pd_vregs = 2,
 128         .num_vregs = 1,
 129 };
 130
 131 static const struct wcnss_data pronto_v2_data = {
 132         .pmu_offset = 0x1004,
 133         .spare_offset = 0x1088,
 134
 135         .pd_names = { "mx", "cx" },
 136         .vregs = (struct wcnss_vreg_info[]) {
 137                 { "vddmx", 1287500, 1287500, 0 },
 138                 { "vddcx", .super_turbo = true },
 139                 { "vddpx", 1800000, 1800000, 0 },
 140         },
 141         .num_pd_vregs = 2,
 142         .num_vregs = 1,
 143 };
 144
 145 void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss,
 146                             struct qcom_iris *iris,
 147                             bool use_48mhz_xo)
 148 {
 149         mutex_lock(&wcnss->iris_lock);
 150
 151         wcnss->iris = iris;
 152         wcnss->use_48mhz_xo = use_48mhz_xo;
 153
 154         mutex_unlock(&wcnss->iris_lock);
 155 }
 156
 157 static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
 158 {
 159         struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
 160         int ret;
 161
 162         ret = qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
 163                             wcnss->mem_region, wcnss->mem_phys,
 164                             wcnss->mem_size, &wcnss->mem_reloc);
 165         if (ret)
 166                 return ret;
 167
 168         qcom_pil_info_store("wcnss", wcnss->mem_phys, wcnss->mem_size);
 169
 170         return 0;
 171 }
 172
 173 static void wcnss_indicate_nv_download(struct qcom_wcnss *wcnss)
 174 {
 175         u32 val;
 176
 177         /* Indicate NV download capability */
 178         val = readl(wcnss->spare_out);
 179         val |= WCNSS_SPARE_NVBIN_DLND;
 180         writel(val, wcnss->spare_out);
 181 }
 182
 183 static void wcnss_configure_iris(struct qcom_wcnss *wcnss)
 184 {
 185         u32 val;
 186
 187         /* Clear PMU cfg register */
 188         writel(0, wcnss->pmu_cfg);
 189
 190         val = WCNSS_PMU_GC_BUS_MUX_SEL_TOP | WCNSS_PMU_IRIS_XO_EN;
 191         writel(val, wcnss->pmu_cfg);
 192
 193         /* Clear XO_MODE */
 194         val &= ~WCNSS_PMU_XO_MODE_MASK;
 195         if (wcnss->use_48mhz_xo)
 196                 val |= WCNSS_PMU_XO_MODE_48 << 1;
 197         else
 198                 val |= WCNSS_PMU_XO_MODE_19p2 << 1;
 199         writel(val, wcnss->pmu_cfg);
 200
 201         /* Reset IRIS */
 202         val |= WCNSS_PMU_IRIS_RESET;
 203         writel(val, wcnss->pmu_cfg);
 204
 205         /* Wait for PMU.iris_reg_reset_sts */
 206         while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_RESET_STS)
 207                 cpu_relax();
 208
 209         /* Clear IRIS reset */
 210         val &= ~WCNSS_PMU_IRIS_RESET;
 211         writel(val, wcnss->pmu_cfg);
 212
 213         /* Start IRIS XO configuration */
 214         val |= WCNSS_PMU_IRIS_XO_CFG;
 215         writel(val, wcnss->pmu_cfg);
 216
 217         /* Wait for XO configuration to finish */
 218         while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_XO_CFG_STS)
 219                 cpu_relax();
 220
 221         /* Stop IRIS XO configuration */
 222         val &= ~WCNSS_PMU_GC_BUS_MUX_SEL_TOP;
 223         val &= ~WCNSS_PMU_IRIS_XO_CFG;
 224         writel(val, wcnss->pmu_cfg);
 225
 226         /* Add some delay for XO to settle */
 227         msleep(20);
 228 }
 229
 230 static int wcnss_start(struct rproc *rproc)
 231 {
 232         struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
 233         int ret, i;
 234
 235         mutex_lock(&wcnss->iris_lock);
 236         if (!wcnss->iris) {
 237                 dev_err(wcnss->dev, "no iris registered\n");
 238                 ret = -EINVAL;
 239                 goto release_iris_lock;
 240         }
 241
 242         for (i = 0; i < wcnss->num_pds; i++) {
 243                 dev_pm_genpd_set_performance_state(wcnss->pds[i], INT_MAX);
 244                 ret = pm_runtime_get_sync(wcnss->pds[i]);
 245                 if (ret < 0) {
 246                         pm_runtime_put_noidle(wcnss->pds[i]);
 247                         goto disable_pds;
 248                 }
 249         }
 250
 251         ret = regulator_bulk_enable(wcnss->num_vregs, wcnss->vregs);
 252         if (ret)
 253                 goto disable_pds;
 254
 255         ret = qcom_iris_enable(wcnss->iris);
 256         if (ret)
 257                 goto disable_regulators;
 258
 259         wcnss_indicate_nv_download(wcnss);
 260         wcnss_configure_iris(wcnss);
 261
 262         ret = qcom_scm_pas_auth_and_reset(WCNSS_PAS_ID);
 263         if (ret) {
 264                 dev_err(wcnss->dev,
 265                         "failed to authenticate image and release reset\n");
 266                 goto disable_iris;
 267         }
 268
 269         ret = wait_for_completion_timeout(&wcnss->start_done,
 270                                           msecs_to_jiffies(5000));
 271         if (wcnss->ready_irq > 0 && ret == 0) {
 272                 /* We have a ready_irq, but it didn't fire in time. */
 273                 dev_err(wcnss->dev, "start timed out\n");
 274                 qcom_scm_pas_shutdown(WCNSS_PAS_ID);
 275                 ret = -ETIMEDOUT;
 276                 goto disable_iris;
 277         }
 278
 279         ret = 0;
 280
 281 disable_iris:
 282         qcom_iris_disable(wcnss->iris);
 283 disable_regulators:
 284         regulator_bulk_disable(wcnss->num_vregs, wcnss->vregs);
 285 disable_pds:
 286         for (i--; i >= 0; i--) {
 287                 pm_runtime_put(wcnss->pds[i]);
 288                 dev_pm_genpd_set_performance_state(wcnss->pds[i], 0);
 289         }
 290 release_iris_lock:
 291         mutex_unlock(&wcnss->iris_lock);
 292
 293         return ret;
 294 }
 295
 296 static int wcnss_stop(struct rproc *rproc)
 297 {
 298         struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
 299         int ret;
 300
 301         if (wcnss->state) {
 302                 qcom_smem_state_update_bits(wcnss->state,
 303                                             BIT(wcnss->stop_bit),
 304                                             BIT(wcnss->stop_bit));
 305
 306                 ret = wait_for_completion_timeout(&wcnss->stop_done,
 307                                                   msecs_to_jiffies(5000));
 308                 if (ret == 0)
 309                         dev_err(wcnss->dev, "timed out on wait\n");
 310
 311                 qcom_smem_state_update_bits(wcnss->state,
 312                                             BIT(wcnss->stop_bit),
 313                                             0);
 314         }
 315
 316         ret = qcom_scm_pas_shutdown(WCNSS_PAS_ID);
 317         if (ret)
 318                 dev_err(wcnss->dev, "failed to shutdown: %d\n", ret);
 319
 320         return ret;
 321 }
 322
 323 static void *wcnss_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
 324 {
 325         struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
 326         int offset;
 327
 328         offset = da - wcnss->mem_reloc;
 329         if (offset < 0 || offset + len > wcnss->mem_size)
 330                 return NULL;
 331
 332         return wcnss->mem_region + offset;
 333 }
 334
 335 static const struct rproc_ops wcnss_ops = {
 336         .start = wcnss_start,
 337         .stop = wcnss_stop,
 338         .da_to_va = wcnss_da_to_va,
 339         .parse_fw = qcom_register_dump_segments,
 340         .load = wcnss_load,
 341 };
 342
 343 static irqreturn_t wcnss_wdog_interrupt(int irq, void *dev)
 344 {
 345         struct qcom_wcnss *wcnss = dev;
 346
 347         rproc_report_crash(wcnss->rproc, RPROC_WATCHDOG);
 348
 349         return IRQ_HANDLED;
 350 }
 351
 352 static irqreturn_t wcnss_fatal_interrupt(int irq, void *dev)
 353 {
 354         struct qcom_wcnss *wcnss = dev;
 355         size_t len;
 356         char *msg;
 357
 358         msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, WCNSS_CRASH_REASON_SMEM, &len);
 359         if (!IS_ERR(msg) && len > 0 && msg[0])
 360                 dev_err(wcnss->dev, "fatal error received: %s\n", msg);
 361
 362         rproc_report_crash(wcnss->rproc, RPROC_FATAL_ERROR);
 363
 364         return IRQ_HANDLED;
 365 }
 366
 367 static irqreturn_t wcnss_ready_interrupt(int irq, void *dev)
 368 {
 369         struct qcom_wcnss *wcnss = dev;
 370
 371         complete(&wcnss->start_done);
 372
 373         return IRQ_HANDLED;
 374 }
 375
 376 static irqreturn_t wcnss_handover_interrupt(int irq, void *dev)
 377 {
 378         /*
 379          * XXX: At this point we're supposed to release the resources that we
 380          * have been holding on behalf of the WCNSS. Unfortunately this
 381          * interrupt comes way before the other side seems to be done.
 382          *
 383          * So we're currently relying on the ready interrupt firing later then
 384          * this and we just disable the resources at the end of wcnss_start().
 385          */
 386
 387         return IRQ_HANDLED;
 388 }
 389
 390 static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev)
 391 {
 392         struct qcom_wcnss *wcnss = dev;
 393
 394         complete(&wcnss->stop_done);
 395
 396         return IRQ_HANDLED;
 397 }
 398
 399 static int wcnss_init_pds(struct qcom_wcnss *wcnss,
 400                           const char * const pd_names[WCNSS_MAX_PDS])
 401 {
 402         int i, ret;
 403
 404         for (i = 0; i < WCNSS_MAX_PDS; i++) {
 405                 if (!pd_names[i])
 406                         break;
 407
 408                 wcnss->pds[i] = dev_pm_domain_attach_by_name(wcnss->dev, pd_names[i]);
 409                 if (IS_ERR_OR_NULL(wcnss->pds[i])) {
 410                         ret = PTR_ERR(wcnss->pds[i]) ? : -ENODATA;
 411                         for (i--; i >= 0; i--)
 412                                 dev_pm_domain_detach(wcnss->pds[i], false);
 413                         return ret;
 414                 }
 415         }
 416         wcnss->num_pds = i;
 417
 418         return 0;
 419 }
 420
 421 static void wcnss_release_pds(struct qcom_wcnss *wcnss)
 422 {
 423         int i;
 424
 425         for (i = 0; i < wcnss->num_pds; i++)
 426                 dev_pm_domain_detach(wcnss->pds[i], false);
 427 }
 428
 429 static int wcnss_init_regulators(struct qcom_wcnss *wcnss,
 430                                  const struct wcnss_vreg_info *info,
 431                                  int num_vregs, int num_pd_vregs)
 432 {
 433         struct regulator_bulk_data *bulk;
 434         int ret;
 435         int i;
 436
 437         /*
 438          * If attaching the power domains suceeded we can skip requesting
 439          * the regulators for the power domains. For old device trees we need to
 440          * reserve extra space to manage them through the regulator interface.
 441          */
 442         if (wcnss->num_pds)
 443                 info += num_pd_vregs;
 444         else
 445                 num_vregs += num_pd_vregs;
 446
 447         bulk = devm_kcalloc(wcnss->dev,
 448                             num_vregs, sizeof(struct regulator_bulk_data),
 449                             GFP_KERNEL);
 450         if (!bulk)
 451                 return -ENOMEM;
 452
 453         for (i = 0; i < num_vregs; i++)
 454                 bulk[i].supply = info[i].name;
 455
 456         ret = devm_regulator_bulk_get(wcnss->dev, num_vregs, bulk);
 457         if (ret)
 458                 return ret;
 459
 460         for (i = 0; i < num_vregs; i++) {
 461                 if (info[i].max_voltage)
 462                         regulator_set_voltage(bulk[i].consumer,
 463                                               info[i].min_voltage,
 464                                               info[i].max_voltage);
 465
 466                 if (info[i].load_uA)
 467                         regulator_set_load(bulk[i].consumer, info[i].load_uA);
 468         }
 469
 470         wcnss->vregs = bulk;
 471         wcnss->num_vregs = num_vregs;
 472
 473         return 0;
 474 }
 475
 476 static int wcnss_request_irq(struct qcom_wcnss *wcnss,
 477                              struct platform_device *pdev,
 478                              const char *name,
 479                              bool optional,
 480                              irq_handler_t thread_fn)
 481 {
 482         int ret;
 483
 484         ret = platform_get_irq_byname(pdev, name);
 485         if (ret < 0 && optional) {
 486                 dev_dbg(&pdev->dev, "no %s IRQ defined, ignoring\n", name);
 487                 return 0;
 488         } else if (ret < 0) {
 489                 dev_err(&pdev->dev, "no %s IRQ defined\n", name);
 490                 return ret;
 491         }
 492
 493         ret = devm_request_threaded_irq(&pdev->dev, ret,
 494                                         NULL, thread_fn,
 495                                         IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 496                                         "wcnss", wcnss);
 497         if (ret)
 498                 dev_err(&pdev->dev, "request %s IRQ failed\n", name);
 499
 500         return ret;
 501 }
 502
 503 static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
 504 {
 505         struct device_node *node;
 506         struct resource r;
 507         int ret;
 508
 509         node = of_parse_phandle(wcnss->dev->of_node, "memory-region", 0);
 510         if (!node) {
 511                 dev_err(wcnss->dev, "no memory-region specified\n");
 512                 return -EINVAL;
 513         }
 514
 515         ret = of_address_to_resource(node, 0, &r);
 516         if (ret)
 517                 return ret;
 518
 519         wcnss->mem_phys = wcnss->mem_reloc = r.start;
 520         wcnss->mem_size = resource_size(&r);
 521         wcnss->mem_region = devm_ioremap_wc(wcnss->dev, wcnss->mem_phys, wcnss->mem_size);
 522         if (!wcnss->mem_region) {
 523                 dev_err(wcnss->dev, "unable to map memory region: %pa+%zx\n",
 524                         &r.start, wcnss->mem_size);
 525                 return -EBUSY;
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int wcnss_probe(struct platform_device *pdev)
 532 {
 533         const char *fw_name = WCNSS_FIRMWARE_NAME;
 534         const struct wcnss_data *data;
 535         struct qcom_wcnss *wcnss;
 536         struct resource *res;
 537         struct rproc *rproc;
 538         void __iomem *mmio;
 539         int ret;
 540
 541         data = of_device_get_match_data(&pdev->dev);
 542
 543         if (!qcom_scm_is_available())
 544                 return -EPROBE_DEFER;
 545
 546         if (!qcom_scm_pas_supported(WCNSS_PAS_ID)) {
 547                 dev_err(&pdev->dev, "PAS is not available for WCNSS\n");
 548                 return -ENXIO;
 549         }
 550
 551         ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
 552                                       &fw_name);
 553         if (ret < 0 && ret != -EINVAL)
 554                 return ret;
 555
 556         rproc = rproc_alloc(&pdev->dev, pdev->name, &wcnss_ops,
 557                             fw_name, sizeof(*wcnss));
 558         if (!rproc) {
 559                 dev_err(&pdev->dev, "unable to allocate remoteproc\n");
 560                 return -ENOMEM;
 561         }
 562         rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
 563
 564         wcnss = (struct qcom_wcnss *)rproc->priv;
 565         wcnss->dev = &pdev->dev;
 566         wcnss->rproc = rproc;
 567         platform_set_drvdata(pdev, wcnss);
 568
 569         init_completion(&wcnss->start_done);
 570         init_completion(&wcnss->stop_done);
 571
 572         mutex_init(&wcnss->iris_lock);
 573
 574         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pmu");
 575         mmio = devm_ioremap_resource(&pdev->dev, res);
 576         if (IS_ERR(mmio)) {
 577                 ret = PTR_ERR(mmio);
 578                 goto free_rproc;
 579         }
 580
 581         ret = wcnss_alloc_memory_region(wcnss);
 582         if (ret)
 583                 goto free_rproc;
 584
 585         wcnss->pmu_cfg = mmio + data->pmu_offset;
 586         wcnss->spare_out = mmio + data->spare_offset;
 587
 588         /*
 589          * We might need to fallback to regulators instead of power domains
 590          * for old device trees. Don't report an error in that case.
 591          */
 592         ret = wcnss_init_pds(wcnss, data->pd_names);
 593         if (ret && (ret != -ENODATA || !data->num_pd_vregs))
 594                 goto free_rproc;
 595
 596         ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs,
 597                                     data->num_pd_vregs);
 598         if (ret)
 599                 goto detach_pds;
 600
 601         ret = wcnss_request_irq(wcnss, pdev, "wdog", false, wcnss_wdog_interrupt);
 602         if (ret < 0)
 603                 goto detach_pds;
 604         wcnss->wdog_irq = ret;
 605
 606         ret = wcnss_request_irq(wcnss, pdev, "fatal", false, wcnss_fatal_interrupt);
 607         if (ret < 0)
 608                 goto detach_pds;
 609         wcnss->fatal_irq = ret;
 610
 611         ret = wcnss_request_irq(wcnss, pdev, "ready", true, wcnss_ready_interrupt);
 612         if (ret < 0)
 613                 goto detach_pds;
 614         wcnss->ready_irq = ret;
 615
 616         ret = wcnss_request_irq(wcnss, pdev, "handover", true, wcnss_handover_interrupt);
 617         if (ret < 0)
 618                 goto detach_pds;
 619         wcnss->handover_irq = ret;
 620
 621         ret = wcnss_request_irq(wcnss, pdev, "stop-ack", true, wcnss_stop_ack_interrupt);
 622         if (ret < 0)
 623                 goto detach_pds;
 624         wcnss->stop_ack_irq = ret;
 625
 626         if (wcnss->stop_ack_irq) {
 627                 wcnss->state = qcom_smem_state_get(&pdev->dev, "stop",
 628                                                    &wcnss->stop_bit);
 629                 if (IS_ERR(wcnss->state)) {
 630                         ret = PTR_ERR(wcnss->state);
 631                         goto detach_pds;
 632                 }
 633         }
 634
 635         qcom_add_smd_subdev(rproc, &wcnss->smd_subdev);
 636         wcnss->sysmon = qcom_add_sysmon_subdev(rproc, "wcnss", WCNSS_SSCTL_ID);
 637         if (IS_ERR(wcnss->sysmon)) {
 638                 ret = PTR_ERR(wcnss->sysmon);
 639                 goto detach_pds;
 640         }
 641
 642         ret = rproc_add(rproc);
 643         if (ret)
 644                 goto detach_pds;
 645
 646         return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
 647
 648 detach_pds:
 649         wcnss_release_pds(wcnss);
 650 free_rproc:
 651         rproc_free(rproc);
 652
 653         return ret;
 654 }
 655
 656 static int wcnss_remove(struct platform_device *pdev)
 657 {
 658         struct qcom_wcnss *wcnss = platform_get_drvdata(pdev);
 659
 660         of_platform_depopulate(&pdev->dev);
 661
 662         qcom_smem_state_put(wcnss->state);
 663         rproc_del(wcnss->rproc);
 664
 665         qcom_remove_sysmon_subdev(wcnss->sysmon);
 666         qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev);
 667         wcnss_release_pds(wcnss);
 668         rproc_free(wcnss->rproc);
 669
 670         return 0;
 671 }
 672
 673 static const struct of_device_id wcnss_of_match[] = {
 674         { .compatible = "qcom,riva-pil", &riva_data },
 675         { .compatible = "qcom,pronto-v1-pil", &pronto_v1_data },
 676         { .compatible = "qcom,pronto-v2-pil", &pronto_v2_data },
 677         { },
 678 };
 679 MODULE_DEVICE_TABLE(of, wcnss_of_match);
 680
 681 static struct platform_driver wcnss_driver = {
 682         .probe = wcnss_probe,
 683         .remove = wcnss_remove,
 684         .driver = {
 685                 .name = "qcom-wcnss-pil",
 686                 .of_match_table = wcnss_of_match,
 687         },
 688 };
 689
 690 static int __init wcnss_init(void)
 691 {
 692         int ret;
 693
 694         ret = platform_driver_register(&wcnss_driver);
 695         if (ret)
 696                 return ret;
 697
 698         ret = platform_driver_register(&qcom_iris_driver);
 699         if (ret)
 700                 platform_driver_unregister(&wcnss_driver);
 701
 702         return ret;
 703 }
 704 module_init(wcnss_init);
 705
 706 static void __exit wcnss_exit(void)
 707 {
 708         platform_driver_unregister(&qcom_iris_driver);
 709         platform_driver_unregister(&wcnss_driver);
 710 }
 711 module_exit(wcnss_exit);
 712
 713 MODULE_DESCRIPTION("Qualcomm Peripheral Image Loader for Wireless Subsystem");
 714 MODULE_LICENSE("GPL v2");