drivers/thermal/rcar_gen3_thermal.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  R-Car Gen3 THS thermal sensor driver
   4  *  Based on rcar_thermal.c and work from Hien Dang and Khiem Nguyen.
   5  *
   6  * Copyright (C) 2016 Renesas Electronics Corporation.
   7  * Copyright (C) 2016 Sang Engineering
   8  */
   9 #include <linux/delay.h>
  10 #include <linux/err.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/io.h>
  13 #include <linux/module.h>
  14 #include <linux/of_device.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/pm_runtime.h>
  17 #include <linux/sys_soc.h>
  18 #include <linux/thermal.h>
  19
  20 #include "thermal_hwmon.h"
  21
  22 /* Register offsets */
  23 #define REG_GEN3_IRQSTR         0x04
  24 #define REG_GEN3_IRQMSK         0x08
  25 #define REG_GEN3_IRQCTL         0x0C
  26 #define REG_GEN3_IRQEN          0x10
  27 #define REG_GEN3_IRQTEMP1       0x14
  28 #define REG_GEN3_IRQTEMP2       0x18
  29 #define REG_GEN3_IRQTEMP3       0x1C
  30 #define REG_GEN3_CTSR           0x20
  31 #define REG_GEN3_THCTR          0x20
  32 #define REG_GEN3_TEMP           0x28
  33 #define REG_GEN3_THCODE1        0x50
  34 #define REG_GEN3_THCODE2        0x54
  35 #define REG_GEN3_THCODE3        0x58
  36 #define REG_GEN3_PTAT1          0x5c
  37 #define REG_GEN3_PTAT2          0x60
  38 #define REG_GEN3_PTAT3          0x64
  39 #define REG_GEN3_THSCP          0x68
  40
  41 /* IRQ{STR,MSK,EN} bits */
  42 #define IRQ_TEMP1               BIT(0)
  43 #define IRQ_TEMP2               BIT(1)
  44 #define IRQ_TEMP3               BIT(2)
  45 #define IRQ_TEMPD1              BIT(3)
  46 #define IRQ_TEMPD2              BIT(4)
  47 #define IRQ_TEMPD3              BIT(5)
  48
  49 /* CTSR bits */
  50 #define CTSR_PONM       BIT(8)
  51 #define CTSR_AOUT       BIT(7)
  52 #define CTSR_THBGR      BIT(5)
  53 #define CTSR_VMEN       BIT(4)
  54 #define CTSR_VMST       BIT(1)
  55 #define CTSR_THSST      BIT(0)
  56
  57 /* THCTR bits */
  58 #define THCTR_PONM      BIT(6)
  59 #define THCTR_THSST     BIT(0)
  60
  61 /* THSCP bits */
  62 #define THSCP_COR_PARA_VLD      (BIT(15) | BIT(14))
  63
  64 #define CTEMP_MASK      0xFFF
  65
  66 #define MCELSIUS(temp)  ((temp) * 1000)
  67 #define GEN3_FUSE_MASK  0xFFF
  68
  69 #define TSC_MAX_NUM     5
  70
  71 /* Structure for thermal temperature calculation */
  72 struct equation_coefs {
  73         int a1;
  74         int b1;
  75         int a2;
  76         int b2;
  77 };
  78
  79 struct rcar_gen3_thermal_tsc {
  80         void __iomem *base;
  81         struct thermal_zone_device *zone;
  82         struct equation_coefs coef;
  83         int tj_t;
  84         int thcode[3];
  85 };
  86
  87 struct rcar_gen3_thermal_priv {
  88         struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
  89         struct thermal_zone_device_ops ops;
  90         unsigned int num_tscs;
  91         void (*thermal_init)(struct rcar_gen3_thermal_priv *priv,
  92                              struct rcar_gen3_thermal_tsc *tsc);
  93         int ptat[3];
  94 };
  95
  96 static inline u32 rcar_gen3_thermal_read(struct rcar_gen3_thermal_tsc *tsc,
  97                                          u32 reg)
  98 {
  99         return ioread32(tsc->base + reg);
 100 }
 101
 102 static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc,
 103                                            u32 reg, u32 data)
 104 {
 105         iowrite32(data, tsc->base + reg);
 106 }
 107
 108 /*
 109  * Linear approximation for temperature
 110  *
 111  * [reg] = [temp] * a + b => [temp] = ([reg] - b) / a
 112  *
 113  * The constants a and b are calculated using two triplets of int values PTAT
 114  * and THCODE. PTAT and THCODE can either be read from hardware or use hard
 115  * coded values from driver. The formula to calculate a and b are taken from
 116  * BSP and sparsely documented and understood.
 117  *
 118  * Examining the linear formula and the formula used to calculate constants a
 119  * and b while knowing that the span for PTAT and THCODE values are between
 120  * 0x000 and 0xfff the largest integer possible is 0xfff * 0xfff == 0xffe001.
 121  * Integer also needs to be signed so that leaves 7 bits for binary
 122  * fixed point scaling.
 123  */
 124
 125 #define FIXPT_SHIFT 7
 126 #define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT)
 127 #define INT_FIXPT(_x) ((_x) >> FIXPT_SHIFT)
 128 #define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b))
 129 #define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT)
 130
 131 #define RCAR3_THERMAL_GRAN 500 /* mili Celsius */
 132
 133 /* no idea where these constants come from */
 134 #define TJ_3 -41
 135
 136 static void rcar_gen3_thermal_calc_coefs(struct rcar_gen3_thermal_priv *priv,
 137                                          struct rcar_gen3_thermal_tsc *tsc,
 138                                          int ths_tj_1)
 139 {
 140         /* TODO: Find documentation and document constant calculation formula */
 141
 142         /*
 143          * Division is not scaled in BSP and if scaled it might overflow
 144          * the dividend (4095 * 4095 << 14 > INT_MAX) so keep it unscaled
 145          */
 146         tsc->tj_t = (FIXPT_INT((priv->ptat[1] - priv->ptat[2]) * (ths_tj_1 - TJ_3))
 147                      / (priv->ptat[0] - priv->ptat[2])) + FIXPT_INT(TJ_3);
 148
 149         tsc->coef.a1 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[2]),
 150                                  tsc->tj_t - FIXPT_INT(TJ_3));
 151         tsc->coef.b1 = FIXPT_INT(tsc->thcode[2]) - tsc->coef.a1 * TJ_3;
 152
 153         tsc->coef.a2 = FIXPT_DIV(FIXPT_INT(tsc->thcode[1] - tsc->thcode[0]),
 154                                  tsc->tj_t - FIXPT_INT(ths_tj_1));
 155         tsc->coef.b2 = FIXPT_INT(tsc->thcode[0]) - tsc->coef.a2 * ths_tj_1;
 156 }
 157
 158 static int rcar_gen3_thermal_round(int temp)
 159 {
 160         int result, round_offs;
 161
 162         round_offs = temp >= 0 ? RCAR3_THERMAL_GRAN / 2 :
 163                 -RCAR3_THERMAL_GRAN / 2;
 164         result = (temp + round_offs) / RCAR3_THERMAL_GRAN;
 165         return result * RCAR3_THERMAL_GRAN;
 166 }
 167
 168 static int rcar_gen3_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 169 {
 170         struct rcar_gen3_thermal_tsc *tsc = tz->devdata;
 171         int mcelsius, val;
 172         int reg;
 173
 174         /* Read register and convert to mili Celsius */
 175         reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
 176
 177         if (reg <= tsc->thcode[1])
 178                 val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1,
 179                                 tsc->coef.a1);
 180         else
 181                 val = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2,
 182                                 tsc->coef.a2);
 183         mcelsius = FIXPT_TO_MCELSIUS(val);
 184
 185         /* Guaranteed operating range is -40C to 125C. */
 186
 187         /* Round value to device granularity setting */
 188         *temp = rcar_gen3_thermal_round(mcelsius);
 189
 190         return 0;
 191 }
 192
 193 static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc,
 194                                               int mcelsius)
 195 {
 196         int celsius, val;
 197
 198         celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);
 199         if (celsius <= INT_FIXPT(tsc->tj_t))
 200                 val = celsius * tsc->coef.a1 + tsc->coef.b1;
 201         else
 202                 val = celsius * tsc->coef.a2 + tsc->coef.b2;
 203
 204         return INT_FIXPT(val);
 205 }
 206
 207 static int rcar_gen3_thermal_set_trips(struct thermal_zone_device *tz, int low, int high)
 208 {
 209         struct rcar_gen3_thermal_tsc *tsc = tz->devdata;
 210         u32 irqmsk = 0;
 211
 212         if (low != -INT_MAX) {
 213                 irqmsk |= IRQ_TEMPD1;
 214                 rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP1,
 215                                         rcar_gen3_thermal_mcelsius_to_temp(tsc, low));
 216         }
 217
 218         if (high != INT_MAX) {
 219                 irqmsk |= IRQ_TEMP2;
 220                 rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP2,
 221                                         rcar_gen3_thermal_mcelsius_to_temp(tsc, high));
 222         }
 223
 224         rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, irqmsk);
 225
 226         return 0;
 227 }
 228
 229 static const struct thermal_zone_device_ops rcar_gen3_tz_of_ops = {
 230         .get_temp       = rcar_gen3_thermal_get_temp,
 231         .set_trips      = rcar_gen3_thermal_set_trips,
 232 };
 233
 234 static irqreturn_t rcar_gen3_thermal_irq(int irq, void *data)
 235 {
 236         struct rcar_gen3_thermal_priv *priv = data;
 237         unsigned int i;
 238         u32 status;
 239
 240         for (i = 0; i < priv->num_tscs; i++) {
 241                 status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR);
 242                 rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0);
 243                 if (status && priv->tscs[i]->zone)
 244                         thermal_zone_device_update(priv->tscs[i]->zone,
 245                                                    THERMAL_EVENT_UNSPECIFIED);
 246         }
 247
 248         return IRQ_HANDLED;
 249 }
 250
 251 static const struct soc_device_attribute r8a7795es1[] = {
 252         { .soc_id = "r8a7795", .revision = "ES1.*" },
 253         { /* sentinel */ }
 254 };
 255
 256 static bool rcar_gen3_thermal_read_fuses(struct rcar_gen3_thermal_priv *priv)
 257 {
 258         unsigned int i;
 259         u32 thscp;
 260
 261         /* If fuses are not set, fallback to pseudo values. */
 262         thscp = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_THSCP);
 263         if ((thscp & THSCP_COR_PARA_VLD) != THSCP_COR_PARA_VLD) {
 264                 /* Default THCODE values in case FUSEs are not set. */
 265                 static const int thcodes[TSC_MAX_NUM][3] = {
 266                         { 3397, 2800, 2221 },
 267                         { 3393, 2795, 2216 },
 268                         { 3389, 2805, 2237 },
 269                         { 3415, 2694, 2195 },
 270                         { 3356, 2724, 2244 },
 271                 };
 272
 273                 priv->ptat[0] = 2631;
 274                 priv->ptat[1] = 1509;
 275                 priv->ptat[2] = 435;
 276
 277                 for (i = 0; i < priv->num_tscs; i++) {
 278                         struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 279
 280                         tsc->thcode[0] = thcodes[i][0];
 281                         tsc->thcode[1] = thcodes[i][1];
 282                         tsc->thcode[2] = thcodes[i][2];
 283                 }
 284
 285                 return false;
 286         }
 287
 288         /*
 289          * Set the pseudo calibration points with fused values.
 290          * PTAT is shared between all TSCs but only fused for the first
 291          * TSC while THCODEs are fused for each TSC.
 292          */
 293         priv->ptat[0] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT1) &
 294                 GEN3_FUSE_MASK;
 295         priv->ptat[1] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT2) &
 296                 GEN3_FUSE_MASK;
 297         priv->ptat[2] = rcar_gen3_thermal_read(priv->tscs[0], REG_GEN3_PTAT3) &
 298                 GEN3_FUSE_MASK;
 299
 300         for (i = 0; i < priv->num_tscs; i++) {
 301                 struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 302
 303                 tsc->thcode[0] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE1) &
 304                         GEN3_FUSE_MASK;
 305                 tsc->thcode[1] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE2) &
 306                         GEN3_FUSE_MASK;
 307                 tsc->thcode[2] = rcar_gen3_thermal_read(tsc, REG_GEN3_THCODE3) &
 308                         GEN3_FUSE_MASK;
 309         }
 310
 311         return true;
 312 }
 313
 314 static void rcar_gen3_thermal_init_r8a7795es1(struct rcar_gen3_thermal_priv *priv,
 315                                               struct rcar_gen3_thermal_tsc *tsc)
 316 {
 317         rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,  CTSR_THBGR);
 318         rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,  0x0);
 319
 320         usleep_range(1000, 2000);
 321
 322         rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_PONM);
 323
 324         rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
 325         rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
 326         if (priv->ops.set_trips)
 327                 rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN,
 328                                         IRQ_TEMPD1 | IRQ_TEMP2);
 329
 330         rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,
 331                                 CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN);
 332
 333         usleep_range(100, 200);
 334
 335         rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,
 336                                 CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN |
 337                                 CTSR_VMST | CTSR_THSST);
 338
 339         usleep_range(1000, 2000);
 340 }
 341
 342 static void rcar_gen3_thermal_init(struct rcar_gen3_thermal_priv *priv,
 343                                    struct rcar_gen3_thermal_tsc *tsc)
 344 {
 345         u32 reg_val;
 346
 347         reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
 348         reg_val &= ~THCTR_PONM;
 349         rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
 350
 351         usleep_range(1000, 2000);
 352
 353         rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0);
 354         rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
 355         if (priv->ops.set_trips)
 356                 rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN,
 357                                         IRQ_TEMPD1 | IRQ_TEMP2);
 358
 359         reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
 360         reg_val |= THCTR_THSST;
 361         rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
 362
 363         usleep_range(1000, 2000);
 364 }
 365
 366 static const int rcar_gen3_ths_tj_1 = 126;
 367 static const int rcar_gen3_ths_tj_1_m3_w = 116;
 368 static const struct of_device_id rcar_gen3_thermal_dt_ids[] = {
 369         {
 370                 .compatible = "renesas,r8a774a1-thermal",
 371                 .data = &rcar_gen3_ths_tj_1_m3_w,
 372         },
 373         {
 374                 .compatible = "renesas,r8a774b1-thermal",
 375                 .data = &rcar_gen3_ths_tj_1,
 376         },
 377         {
 378                 .compatible = "renesas,r8a774e1-thermal",
 379                 .data = &rcar_gen3_ths_tj_1,
 380         },
 381         {
 382                 .compatible = "renesas,r8a7795-thermal",
 383                 .data = &rcar_gen3_ths_tj_1,
 384         },
 385         {
 386                 .compatible = "renesas,r8a7796-thermal",
 387                 .data = &rcar_gen3_ths_tj_1_m3_w,
 388         },
 389         {
 390                 .compatible = "renesas,r8a77961-thermal",
 391                 .data = &rcar_gen3_ths_tj_1_m3_w,
 392         },
 393         {
 394                 .compatible = "renesas,r8a77965-thermal",
 395                 .data = &rcar_gen3_ths_tj_1,
 396         },
 397         {
 398                 .compatible = "renesas,r8a77980-thermal",
 399                 .data = &rcar_gen3_ths_tj_1,
 400         },
 401         {
 402                 .compatible = "renesas,r8a779a0-thermal",
 403                 .data = &rcar_gen3_ths_tj_1,
 404         },
 405         {
 406                 .compatible = "renesas,r8a779f0-thermal",
 407                 .data = &rcar_gen3_ths_tj_1,
 408         },
 409         {
 410                 .compatible = "renesas,r8a779g0-thermal",
 411                 .data = &rcar_gen3_ths_tj_1,
 412         },
 413         {},
 414 };
 415 MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
 416
 417 static int rcar_gen3_thermal_remove(struct platform_device *pdev)
 418 {
 419         struct device *dev = &pdev->dev;
 420
 421         pm_runtime_put(dev);
 422         pm_runtime_disable(dev);
 423
 424         return 0;
 425 }
 426
 427 static void rcar_gen3_hwmon_action(void *data)
 428 {
 429         struct thermal_zone_device *zone = data;
 430
 431         thermal_remove_hwmon_sysfs(zone);
 432 }
 433
 434 static int rcar_gen3_thermal_request_irqs(struct rcar_gen3_thermal_priv *priv,
 435                                           struct platform_device *pdev)
 436 {
 437         struct device *dev = &pdev->dev;
 438         unsigned int i;
 439         char *irqname;
 440         int ret, irq;
 441
 442         for (i = 0; i < 2; i++) {
 443                 irq = platform_get_irq_optional(pdev, i);
 444                 if (irq < 0)
 445                         return irq;
 446
 447                 irqname = devm_kasprintf(dev, GFP_KERNEL, "%s:ch%d",
 448                                          dev_name(dev), i);
 449                 if (!irqname)
 450                         return -ENOMEM;
 451
 452                 ret = devm_request_threaded_irq(dev, irq, NULL,
 453                                                 rcar_gen3_thermal_irq,
 454                                                 IRQF_ONESHOT, irqname, priv);
 455                 if (ret)
 456                         return ret;
 457         }
 458
 459         return 0;
 460 }
 461
 462 static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 463 {
 464         struct rcar_gen3_thermal_priv *priv;
 465         struct device *dev = &pdev->dev;
 466         const int *ths_tj_1 = of_device_get_match_data(dev);
 467         struct resource *res;
 468         struct thermal_zone_device *zone;
 469         unsigned int i;
 470         int ret;
 471
 472         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 473         if (!priv)
 474                 return -ENOMEM;
 475
 476         priv->ops = rcar_gen3_tz_of_ops;
 477         priv->thermal_init = rcar_gen3_thermal_init;
 478         if (soc_device_match(r8a7795es1))
 479                 priv->thermal_init = rcar_gen3_thermal_init_r8a7795es1;
 480
 481         platform_set_drvdata(pdev, priv);
 482
 483         if (rcar_gen3_thermal_request_irqs(priv, pdev))
 484                 priv->ops.set_trips = NULL;
 485
 486         pm_runtime_enable(dev);
 487         pm_runtime_get_sync(dev);
 488
 489         for (i = 0; i < TSC_MAX_NUM; i++) {
 490                 struct rcar_gen3_thermal_tsc *tsc;
 491
 492                 res = platform_get_resource(pdev, IORESOURCE_MEM, i);
 493                 if (!res)
 494                         break;
 495
 496                 tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
 497                 if (!tsc) {
 498                         ret = -ENOMEM;
 499                         goto error_unregister;
 500                 }
 501
 502                 tsc->base = devm_ioremap_resource(dev, res);
 503                 if (IS_ERR(tsc->base)) {
 504                         ret = PTR_ERR(tsc->base);
 505                         goto error_unregister;
 506                 }
 507
 508                 priv->tscs[i] = tsc;
 509         }
 510
 511         priv->num_tscs = i;
 512
 513         if (!rcar_gen3_thermal_read_fuses(priv))
 514                 dev_info(dev, "No calibration values fused, fallback to driver values\n");
 515
 516         for (i = 0; i < priv->num_tscs; i++) {
 517                 struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 518
 519                 priv->thermal_init(priv, tsc);
 520                 rcar_gen3_thermal_calc_coefs(priv, tsc, *ths_tj_1);
 521
 522                 zone = devm_thermal_of_zone_register(dev, i, tsc, &priv->ops);
 523                 if (IS_ERR(zone)) {
 524                         dev_err(dev, "Sensor %u: Can't register thermal zone\n", i);
 525                         ret = PTR_ERR(zone);
 526                         goto error_unregister;
 527                 }
 528                 tsc->zone = zone;
 529
 530                 tsc->zone->tzp->no_hwmon = false;
 531                 ret = thermal_add_hwmon_sysfs(tsc->zone);
 532                 if (ret)
 533                         goto error_unregister;
 534
 535                 ret = devm_add_action_or_reset(dev, rcar_gen3_hwmon_action, zone);
 536                 if (ret)
 537                         goto error_unregister;
 538
 539                 ret = thermal_zone_get_num_trips(tsc->zone);
 540                 if (ret < 0)
 541                         goto error_unregister;
 542
 543                 dev_info(dev, "Sensor %u: Loaded %d trip points\n", i, ret);
 544         }
 545
 546         if (!priv->num_tscs) {
 547                 ret = -ENODEV;
 548                 goto error_unregister;
 549         }
 550
 551         return 0;
 552
 553 error_unregister:
 554         rcar_gen3_thermal_remove(pdev);
 555
 556         return ret;
 557 }
 558
 559 static int __maybe_unused rcar_gen3_thermal_resume(struct device *dev)
 560 {
 561         struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev);
 562         unsigned int i;
 563
 564         for (i = 0; i < priv->num_tscs; i++) {
 565                 struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
 566
 567                 priv->thermal_init(priv, tsc);
 568         }
 569
 570         return 0;
 571 }
 572
 573 static SIMPLE_DEV_PM_OPS(rcar_gen3_thermal_pm_ops, NULL,
 574                          rcar_gen3_thermal_resume);
 575
 576 static struct platform_driver rcar_gen3_thermal_driver = {
 577         .driver = {
 578                 .name   = "rcar_gen3_thermal",
 579                 .pm = &rcar_gen3_thermal_pm_ops,
 580                 .of_match_table = rcar_gen3_thermal_dt_ids,
 581         },
 582         .probe          = rcar_gen3_thermal_probe,
 583         .remove         = rcar_gen3_thermal_remove,
 584 };
 585 module_platform_driver(rcar_gen3_thermal_driver);
 586
 587 MODULE_LICENSE("GPL v2");
 588 MODULE_DESCRIPTION("R-Car Gen3 THS thermal sensor driver");
 589 MODULE_AUTHOR("Wolfram Sang <wsa+renesas@sang-engineering.com>");