drivers/remoteproc/qcom_q6v5_wcss.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2016-2018 Linaro Ltd.
   4  * Copyright (C) 2014 Sony Mobile Communications AB
   5  * Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
   6  */
   7 #include <linux/iopoll.h>
   8 #include <linux/kernel.h>
   9 #include <linux/mfd/syscon.h>
  10 #include <linux/module.h>
  11 #include <linux/of_reserved_mem.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/regmap.h>
  14 #include <linux/reset.h>
  15 #include <linux/soc/qcom/mdt_loader.h>
  16 #include "qcom_common.h"
  17 #include "qcom_pil_info.h"
  18 #include "qcom_q6v5.h"
  19
  20 #define WCSS_CRASH_REASON               421
  21
  22 /* Q6SS Register Offsets */
  23 #define Q6SS_RESET_REG          0x014
  24 #define Q6SS_GFMUX_CTL_REG              0x020
  25 #define Q6SS_PWR_CTL_REG                0x030
  26 #define Q6SS_MEM_PWR_CTL                0x0B0
  27
  28 /* AXI Halt Register Offsets */
  29 #define AXI_HALTREQ_REG                 0x0
  30 #define AXI_HALTACK_REG                 0x4
  31 #define AXI_IDLE_REG                    0x8
  32
  33 #define HALT_ACK_TIMEOUT_MS             100
  34
  35 /* Q6SS_RESET */
  36 #define Q6SS_STOP_CORE                  BIT(0)
  37 #define Q6SS_CORE_ARES                  BIT(1)
  38 #define Q6SS_BUS_ARES_ENABLE            BIT(2)
  39
  40 /* Q6SS_GFMUX_CTL */
  41 #define Q6SS_CLK_ENABLE                 BIT(1)
  42
  43 /* Q6SS_PWR_CTL */
  44 #define Q6SS_L2DATA_STBY_N              BIT(18)
  45 #define Q6SS_SLP_RET_N                  BIT(19)
  46 #define Q6SS_CLAMP_IO                   BIT(20)
  47 #define QDSS_BHS_ON                     BIT(21)
  48
  49 /* Q6SS parameters */
  50 #define Q6SS_LDO_BYP            BIT(25)
  51 #define Q6SS_BHS_ON             BIT(24)
  52 #define Q6SS_CLAMP_WL           BIT(21)
  53 #define Q6SS_CLAMP_QMC_MEM              BIT(22)
  54 #define HALT_CHECK_MAX_LOOPS            200
  55 #define Q6SS_XO_CBCR            GENMASK(5, 3)
  56
  57 /* Q6SS config/status registers */
  58 #define TCSR_GLOBAL_CFG0        0x0
  59 #define TCSR_GLOBAL_CFG1        0x4
  60 #define SSCAON_CONFIG           0x8
  61 #define SSCAON_STATUS           0xc
  62 #define Q6SS_BHS_STATUS         0x78
  63 #define Q6SS_RST_EVB            0x10
  64
  65 #define BHS_EN_REST_ACK         BIT(0)
  66 #define SSCAON_ENABLE           BIT(13)
  67 #define SSCAON_BUS_EN           BIT(15)
  68 #define SSCAON_BUS_MUX_MASK     GENMASK(18, 16)
  69
  70 #define MEM_BANKS               19
  71 #define TCSR_WCSS_CLK_MASK      0x1F
  72 #define TCSR_WCSS_CLK_ENABLE    0x14
  73
  74 struct q6v5_wcss {
  75         struct device *dev;
  76
  77         void __iomem *reg_base;
  78         void __iomem *rmb_base;
  79
  80         struct regmap *halt_map;
  81         u32 halt_q6;
  82         u32 halt_wcss;
  83         u32 halt_nc;
  84
  85         struct reset_control *wcss_aon_reset;
  86         struct reset_control *wcss_reset;
  87         struct reset_control *wcss_q6_reset;
  88
  89         struct qcom_q6v5 q6v5;
  90
  91         phys_addr_t mem_phys;
  92         phys_addr_t mem_reloc;
  93         void *mem_region;
  94         size_t mem_size;
  95
  96         struct qcom_rproc_glink glink_subdev;
  97         struct qcom_rproc_ssr ssr_subdev;
  98 };
  99
 100 static int q6v5_wcss_reset(struct q6v5_wcss *wcss)
 101 {
 102         int ret;
 103         u32 val;
 104         int i;
 105
 106         /* Assert resets, stop core */
 107         val = readl(wcss->reg_base + Q6SS_RESET_REG);
 108         val |= Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE;
 109         writel(val, wcss->reg_base + Q6SS_RESET_REG);
 110
 111         /* BHS require xo cbcr to be enabled */
 112         val = readl(wcss->reg_base + Q6SS_XO_CBCR);
 113         val |= 0x1;
 114         writel(val, wcss->reg_base + Q6SS_XO_CBCR);
 115
 116         /* Read CLKOFF bit to go low indicating CLK is enabled */
 117         ret = readl_poll_timeout(wcss->reg_base + Q6SS_XO_CBCR,
 118                                  val, !(val & BIT(31)), 1,
 119                                  HALT_CHECK_MAX_LOOPS);
 120         if (ret) {
 121                 dev_err(wcss->dev,
 122                         "xo cbcr enabling timed out (rc:%d)\n", ret);
 123                 return ret;
 124         }
 125         /* Enable power block headswitch and wait for it to stabilize */
 126         val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
 127         val |= Q6SS_BHS_ON;
 128         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 129         udelay(1);
 130
 131         /* Put LDO in bypass mode */
 132         val |= Q6SS_LDO_BYP;
 133         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 134
 135         /* Deassert Q6 compiler memory clamp */
 136         val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
 137         val &= ~Q6SS_CLAMP_QMC_MEM;
 138         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 139
 140         /* Deassert memory peripheral sleep and L2 memory standby */
 141         val |= Q6SS_L2DATA_STBY_N | Q6SS_SLP_RET_N;
 142         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 143
 144         /* Turn on L1, L2, ETB and JU memories 1 at a time */
 145         val = readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
 146         for (i = MEM_BANKS; i >= 0; i--) {
 147                 val |= BIT(i);
 148                 writel(val, wcss->reg_base + Q6SS_MEM_PWR_CTL);
 149                 /*
 150                  * Read back value to ensure the write is done then
 151                  * wait for 1us for both memory peripheral and data
 152                  * array to turn on.
 153                  */
 154                 val |= readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
 155                 udelay(1);
 156         }
 157         /* Remove word line clamp */
 158         val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
 159         val &= ~Q6SS_CLAMP_WL;
 160         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 161
 162         /* Remove IO clamp */
 163         val &= ~Q6SS_CLAMP_IO;
 164         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 165
 166         /* Bring core out of reset */
 167         val = readl(wcss->reg_base + Q6SS_RESET_REG);
 168         val &= ~Q6SS_CORE_ARES;
 169         writel(val, wcss->reg_base + Q6SS_RESET_REG);
 170
 171         /* Turn on core clock */
 172         val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
 173         val |= Q6SS_CLK_ENABLE;
 174         writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
 175
 176         /* Start core execution */
 177         val = readl(wcss->reg_base + Q6SS_RESET_REG);
 178         val &= ~Q6SS_STOP_CORE;
 179         writel(val, wcss->reg_base + Q6SS_RESET_REG);
 180
 181         return 0;
 182 }
 183
 184 static int q6v5_wcss_start(struct rproc *rproc)
 185 {
 186         struct q6v5_wcss *wcss = rproc->priv;
 187         int ret;
 188
 189         qcom_q6v5_prepare(&wcss->q6v5);
 190
 191         /* Release Q6 and WCSS reset */
 192         ret = reset_control_deassert(wcss->wcss_reset);
 193         if (ret) {
 194                 dev_err(wcss->dev, "wcss_reset failed\n");
 195                 return ret;
 196         }
 197
 198         ret = reset_control_deassert(wcss->wcss_q6_reset);
 199         if (ret) {
 200                 dev_err(wcss->dev, "wcss_q6_reset failed\n");
 201                 goto wcss_reset;
 202         }
 203
 204         /* Lithium configuration - clock gating and bus arbitration */
 205         ret = regmap_update_bits(wcss->halt_map,
 206                                  wcss->halt_nc + TCSR_GLOBAL_CFG0,
 207                                  TCSR_WCSS_CLK_MASK,
 208                                  TCSR_WCSS_CLK_ENABLE);
 209         if (ret)
 210                 goto wcss_q6_reset;
 211
 212         ret = regmap_update_bits(wcss->halt_map,
 213                                  wcss->halt_nc + TCSR_GLOBAL_CFG1,
 214                                  1, 0);
 215         if (ret)
 216                 goto wcss_q6_reset;
 217
 218         /* Write bootaddr to EVB so that Q6WCSS will jump there after reset */
 219         writel(rproc->bootaddr >> 4, wcss->reg_base + Q6SS_RST_EVB);
 220
 221         ret = q6v5_wcss_reset(wcss);
 222         if (ret)
 223                 goto wcss_q6_reset;
 224
 225         ret = qcom_q6v5_wait_for_start(&wcss->q6v5, 5 * HZ);
 226         if (ret == -ETIMEDOUT)
 227                 dev_err(wcss->dev, "start timed out\n");
 228
 229         return ret;
 230
 231 wcss_q6_reset:
 232         reset_control_assert(wcss->wcss_q6_reset);
 233
 234 wcss_reset:
 235         reset_control_assert(wcss->wcss_reset);
 236
 237         return ret;
 238 }
 239
 240 static void q6v5_wcss_halt_axi_port(struct q6v5_wcss *wcss,
 241                                     struct regmap *halt_map,
 242                                     u32 offset)
 243 {
 244         unsigned long timeout;
 245         unsigned int val;
 246         int ret;
 247
 248         /* Check if we're already idle */
 249         ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
 250         if (!ret && val)
 251                 return;
 252
 253         /* Assert halt request */
 254         regmap_write(halt_map, offset + AXI_HALTREQ_REG, 1);
 255
 256         /* Wait for halt */
 257         timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS);
 258         for (;;) {
 259                 ret = regmap_read(halt_map, offset + AXI_HALTACK_REG, &val);
 260                 if (ret || val || time_after(jiffies, timeout))
 261                         break;
 262
 263                 msleep(1);
 264         }
 265
 266         ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
 267         if (ret || !val)
 268                 dev_err(wcss->dev, "port failed halt\n");
 269
 270         /* Clear halt request (port will remain halted until reset) */
 271         regmap_write(halt_map, offset + AXI_HALTREQ_REG, 0);
 272 }
 273
 274 static int q6v5_wcss_powerdown(struct q6v5_wcss *wcss)
 275 {
 276         int ret;
 277         u32 val;
 278
 279         /* 1 - Assert WCSS/Q6 HALTREQ */
 280         q6v5_wcss_halt_axi_port(wcss, wcss->halt_map, wcss->halt_wcss);
 281
 282         /* 2 - Enable WCSSAON_CONFIG */
 283         val = readl(wcss->rmb_base + SSCAON_CONFIG);
 284         val |= SSCAON_ENABLE;
 285         writel(val, wcss->rmb_base + SSCAON_CONFIG);
 286
 287         /* 3 - Set SSCAON_CONFIG */
 288         val |= SSCAON_BUS_EN;
 289         val &= ~SSCAON_BUS_MUX_MASK;
 290         writel(val, wcss->rmb_base + SSCAON_CONFIG);
 291
 292         /* 4 - SSCAON_CONFIG 1 */
 293         val |= BIT(1);
 294         writel(val, wcss->rmb_base + SSCAON_CONFIG);
 295
 296         /* 5 - wait for SSCAON_STATUS */
 297         ret = readl_poll_timeout(wcss->rmb_base + SSCAON_STATUS,
 298                                  val, (val & 0xffff) == 0x400, 1000,
 299                                  HALT_CHECK_MAX_LOOPS);
 300         if (ret) {
 301                 dev_err(wcss->dev,
 302                         "can't get SSCAON_STATUS rc:%d)\n", ret);
 303                 return ret;
 304         }
 305
 306         /* 6 - De-assert WCSS_AON reset */
 307         reset_control_assert(wcss->wcss_aon_reset);
 308
 309         /* 7 - Disable WCSSAON_CONFIG 13 */
 310         val = readl(wcss->rmb_base + SSCAON_CONFIG);
 311         val &= ~SSCAON_ENABLE;
 312         writel(val, wcss->rmb_base + SSCAON_CONFIG);
 313
 314         /* 8 - De-assert WCSS/Q6 HALTREQ */
 315         reset_control_assert(wcss->wcss_reset);
 316
 317         return 0;
 318 }
 319
 320 static int q6v5_q6_powerdown(struct q6v5_wcss *wcss)
 321 {
 322         int ret;
 323         u32 val;
 324         int i;
 325
 326         /* 1 - Halt Q6 bus interface */
 327         q6v5_wcss_halt_axi_port(wcss, wcss->halt_map, wcss->halt_q6);
 328
 329         /* 2 - Disable Q6 Core clock */
 330         val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
 331         val &= ~Q6SS_CLK_ENABLE;
 332         writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
 333
 334         /* 3 - Clamp I/O */
 335         val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
 336         val |= Q6SS_CLAMP_IO;
 337         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 338
 339         /* 4 - Clamp WL */
 340         val |= QDSS_BHS_ON;
 341         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 342
 343         /* 5 - Clear Erase standby */
 344         val &= ~Q6SS_L2DATA_STBY_N;
 345         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 346
 347         /* 6 - Clear Sleep RTN */
 348         val &= ~Q6SS_SLP_RET_N;
 349         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 350
 351         /* 7 - turn off Q6 memory foot/head switch one bank at a time */
 352         for (i = 0; i < 20; i++) {
 353                 val = readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
 354                 val &= ~BIT(i);
 355                 writel(val, wcss->reg_base + Q6SS_MEM_PWR_CTL);
 356                 mdelay(1);
 357         }
 358
 359         /* 8 - Assert QMC memory RTN */
 360         val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
 361         val |= Q6SS_CLAMP_QMC_MEM;
 362         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 363
 364         /* 9 - Turn off BHS */
 365         val &= ~Q6SS_BHS_ON;
 366         writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
 367         udelay(1);
 368
 369         /* 10 - Wait till BHS Reset is done */
 370         ret = readl_poll_timeout(wcss->reg_base + Q6SS_BHS_STATUS,
 371                                  val, !(val & BHS_EN_REST_ACK), 1000,
 372                                  HALT_CHECK_MAX_LOOPS);
 373         if (ret) {
 374                 dev_err(wcss->dev, "BHS_STATUS not OFF (rc:%d)\n", ret);
 375                 return ret;
 376         }
 377
 378         /* 11 -  Assert WCSS reset */
 379         reset_control_assert(wcss->wcss_reset);
 380
 381         /* 12 - Assert Q6 reset */
 382         reset_control_assert(wcss->wcss_q6_reset);
 383
 384         return 0;
 385 }
 386
 387 static int q6v5_wcss_stop(struct rproc *rproc)
 388 {
 389         struct q6v5_wcss *wcss = rproc->priv;
 390         int ret;
 391
 392         /* WCSS powerdown */
 393         ret = qcom_q6v5_request_stop(&wcss->q6v5, NULL);
 394         if (ret == -ETIMEDOUT) {
 395                 dev_err(wcss->dev, "timed out on wait\n");
 396                 return ret;
 397         }
 398
 399         ret = q6v5_wcss_powerdown(wcss);
 400         if (ret)
 401                 return ret;
 402
 403         /* Q6 Power down */
 404         ret = q6v5_q6_powerdown(wcss);
 405         if (ret)
 406                 return ret;
 407
 408         qcom_q6v5_unprepare(&wcss->q6v5);
 409
 410         return 0;
 411 }
 412
 413 static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len)
 414 {
 415         struct q6v5_wcss *wcss = rproc->priv;
 416         int offset;
 417
 418         offset = da - wcss->mem_reloc;
 419         if (offset < 0 || offset + len > wcss->mem_size)
 420                 return NULL;
 421
 422         return wcss->mem_region + offset;
 423 }
 424
 425 static int q6v5_wcss_load(struct rproc *rproc, const struct firmware *fw)
 426 {
 427         struct q6v5_wcss *wcss = rproc->priv;
 428         int ret;
 429
 430         ret = qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
 431                                     0, wcss->mem_region, wcss->mem_phys,
 432                                     wcss->mem_size, &wcss->mem_reloc);
 433         if (ret)
 434                 return ret;
 435
 436         qcom_pil_info_store("wcnss", wcss->mem_phys, wcss->mem_size);
 437
 438         return ret;
 439 }
 440
 441 static const struct rproc_ops q6v5_wcss_ops = {
 442         .start = q6v5_wcss_start,
 443         .stop = q6v5_wcss_stop,
 444         .da_to_va = q6v5_wcss_da_to_va,
 445         .load = q6v5_wcss_load,
 446         .get_boot_addr = rproc_elf_get_boot_addr,
 447 };
 448
 449 static int q6v5_wcss_init_reset(struct q6v5_wcss *wcss)
 450 {
 451         struct device *dev = wcss->dev;
 452
 453         wcss->wcss_aon_reset = devm_reset_control_get(dev, "wcss_aon_reset");
 454         if (IS_ERR(wcss->wcss_aon_reset)) {
 455                 dev_err(wcss->dev, "unable to acquire wcss_aon_reset\n");
 456                 return PTR_ERR(wcss->wcss_aon_reset);
 457         }
 458
 459         wcss->wcss_reset = devm_reset_control_get(dev, "wcss_reset");
 460         if (IS_ERR(wcss->wcss_reset)) {
 461                 dev_err(wcss->dev, "unable to acquire wcss_reset\n");
 462                 return PTR_ERR(wcss->wcss_reset);
 463         }
 464
 465         wcss->wcss_q6_reset = devm_reset_control_get(dev, "wcss_q6_reset");
 466         if (IS_ERR(wcss->wcss_q6_reset)) {
 467                 dev_err(wcss->dev, "unable to acquire wcss_q6_reset\n");
 468                 return PTR_ERR(wcss->wcss_q6_reset);
 469         }
 470
 471         return 0;
 472 }
 473
 474 static int q6v5_wcss_init_mmio(struct q6v5_wcss *wcss,
 475                                struct platform_device *pdev)
 476 {
 477         struct of_phandle_args args;
 478         struct resource *res;
 479         int ret;
 480
 481         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qdsp6");
 482         wcss->reg_base = devm_ioremap_resource(&pdev->dev, res);
 483         if (IS_ERR(wcss->reg_base))
 484                 return PTR_ERR(wcss->reg_base);
 485
 486         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rmb");
 487         wcss->rmb_base = devm_ioremap_resource(&pdev->dev, res);
 488         if (IS_ERR(wcss->rmb_base))
 489                 return PTR_ERR(wcss->rmb_base);
 490
 491         ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
 492                                                "qcom,halt-regs", 3, 0, &args);
 493         if (ret < 0) {
 494                 dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
 495                 return -EINVAL;
 496         }
 497
 498         wcss->halt_map = syscon_node_to_regmap(args.np);
 499         of_node_put(args.np);
 500         if (IS_ERR(wcss->halt_map))
 501                 return PTR_ERR(wcss->halt_map);
 502
 503         wcss->halt_q6 = args.args[0];
 504         wcss->halt_wcss = args.args[1];
 505         wcss->halt_nc = args.args[2];
 506
 507         return 0;
 508 }
 509
 510 static int q6v5_alloc_memory_region(struct q6v5_wcss *wcss)
 511 {
 512         struct reserved_mem *rmem = NULL;
 513         struct device_node *node;
 514         struct device *dev = wcss->dev;
 515
 516         node = of_parse_phandle(dev->of_node, "memory-region", 0);
 517         if (node)
 518                 rmem = of_reserved_mem_lookup(node);
 519         of_node_put(node);
 520
 521         if (!rmem) {
 522                 dev_err(dev, "unable to acquire memory-region\n");
 523                 return -EINVAL;
 524         }
 525
 526         wcss->mem_phys = rmem->base;
 527         wcss->mem_reloc = rmem->base;
 528         wcss->mem_size = rmem->size;
 529         wcss->mem_region = devm_ioremap_wc(dev, wcss->mem_phys, wcss->mem_size);
 530         if (!wcss->mem_region) {
 531                 dev_err(dev, "unable to map memory region: %pa+%pa\n",
 532                         &rmem->base, &rmem->size);
 533                 return -EBUSY;
 534         }
 535
 536         return 0;
 537 }
 538
 539 static int q6v5_wcss_probe(struct platform_device *pdev)
 540 {
 541         struct q6v5_wcss *wcss;
 542         struct rproc *rproc;
 543         int ret;
 544
 545         rproc = rproc_alloc(&pdev->dev, pdev->name, &q6v5_wcss_ops,
 546                             "IPQ8074/q6_fw.mdt", sizeof(*wcss));
 547         if (!rproc) {
 548                 dev_err(&pdev->dev, "failed to allocate rproc\n");
 549                 return -ENOMEM;
 550         }
 551
 552         wcss = rproc->priv;
 553         wcss->dev = &pdev->dev;
 554
 555         ret = q6v5_wcss_init_mmio(wcss, pdev);
 556         if (ret)
 557                 goto free_rproc;
 558
 559         ret = q6v5_alloc_memory_region(wcss);
 560         if (ret)
 561                 goto free_rproc;
 562
 563         ret = q6v5_wcss_init_reset(wcss);
 564         if (ret)
 565                 goto free_rproc;
 566
 567         ret = qcom_q6v5_init(&wcss->q6v5, pdev, rproc, WCSS_CRASH_REASON, NULL);
 568         if (ret)
 569                 goto free_rproc;
 570
 571         qcom_add_glink_subdev(rproc, &wcss->glink_subdev, "q6wcss");
 572         qcom_add_ssr_subdev(rproc, &wcss->ssr_subdev, "q6wcss");
 573
 574         ret = rproc_add(rproc);
 575         if (ret)
 576                 goto free_rproc;
 577
 578         platform_set_drvdata(pdev, rproc);
 579
 580         return 0;
 581
 582 free_rproc:
 583         rproc_free(rproc);
 584
 585         return ret;
 586 }
 587
 588 static int q6v5_wcss_remove(struct platform_device *pdev)
 589 {
 590         struct rproc *rproc = platform_get_drvdata(pdev);
 591
 592         rproc_del(rproc);
 593         rproc_free(rproc);
 594
 595         return 0;
 596 }
 597
 598 static const struct of_device_id q6v5_wcss_of_match[] = {
 599         { .compatible = "qcom,ipq8074-wcss-pil" },
 600         { },
 601 };
 602 MODULE_DEVICE_TABLE(of, q6v5_wcss_of_match);
 603
 604 static struct platform_driver q6v5_wcss_driver = {
 605         .probe = q6v5_wcss_probe,
 606         .remove = q6v5_wcss_remove,
 607         .driver = {
 608                 .name = "qcom-q6v5-wcss-pil",
 609                 .of_match_table = q6v5_wcss_of_match,
 610         },
 611 };
 612 module_platform_driver(q6v5_wcss_driver);
 613
 614 MODULE_DESCRIPTION("Hexagon WCSS Peripheral Image Loader");
 615 MODULE_LICENSE("GPL v2");