drivers/thermal/sun8i_thermal.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Thermal sensor driver for Allwinner SOC
   4  * Copyright (C) 2019 Yangtao Li
   5  *
   6  * Based on the work of Icenowy Zheng <icenowy@aosc.io>
   7  * Based on the work of Ondrej Jirman <megous@megous.com>
   8  * Based on the work of Josef Gajdusek <atx@atx.name>
   9  */
  10
  11 #include <linux/clk.h>
  12 #include <linux/device.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/nvmem-consumer.h>
  16 #include <linux/of_device.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/regmap.h>
  19 #include <linux/reset.h>
  20 #include <linux/slab.h>
  21 #include <linux/thermal.h>
  22
  23 #include "thermal_hwmon.h"
  24
  25 #define MAX_SENSOR_NUM  4
  26
  27 #define FT_TEMP_MASK                            GENMASK(11, 0)
  28 #define TEMP_CALIB_MASK                         GENMASK(11, 0)
  29 #define CALIBRATE_DEFAULT                       0x800
  30
  31 #define SUN8I_THS_CTRL0                         0x00
  32 #define SUN8I_THS_CTRL2                         0x40
  33 #define SUN8I_THS_IC                            0x44
  34 #define SUN8I_THS_IS                            0x48
  35 #define SUN8I_THS_MFC                           0x70
  36 #define SUN8I_THS_TEMP_CALIB                    0x74
  37 #define SUN8I_THS_TEMP_DATA                     0x80
  38
  39 #define SUN50I_THS_CTRL0                        0x00
  40 #define SUN50I_H6_THS_ENABLE                    0x04
  41 #define SUN50I_H6_THS_PC                        0x08
  42 #define SUN50I_H6_THS_DIC                       0x10
  43 #define SUN50I_H6_THS_DIS                       0x20
  44 #define SUN50I_H6_THS_MFC                       0x30
  45 #define SUN50I_H6_THS_TEMP_CALIB                0xa0
  46 #define SUN50I_H6_THS_TEMP_DATA                 0xc0
  47
  48 #define SUN8I_THS_CTRL0_T_ACQ0(x)               (GENMASK(15, 0) & (x))
  49 #define SUN8I_THS_CTRL2_T_ACQ1(x)               ((GENMASK(15, 0) & (x)) << 16)
  50 #define SUN8I_THS_DATA_IRQ_STS(x)               BIT(x + 8)
  51
  52 #define SUN50I_THS_CTRL0_T_ACQ(x)               ((GENMASK(15, 0) & (x)) << 16)
  53 #define SUN50I_THS_FILTER_EN                    BIT(2)
  54 #define SUN50I_THS_FILTER_TYPE(x)               (GENMASK(1, 0) & (x))
  55 #define SUN50I_H6_THS_PC_TEMP_PERIOD(x)         ((GENMASK(19, 0) & (x)) << 12)
  56 #define SUN50I_H6_THS_DATA_IRQ_STS(x)           BIT(x)
  57
  58 /* millidegree celsius */
  59
  60 struct tsensor {
  61         struct ths_device               *tmdev;
  62         struct thermal_zone_device      *tzd;
  63         int                             id;
  64 };
  65
  66 struct ths_thermal_chip {
  67         bool            has_mod_clk;
  68         bool            has_bus_clk_reset;
  69         int             sensor_num;
  70         int             offset;
  71         int             scale;
  72         int             ft_deviation;
  73         int             temp_data_base;
  74         int             (*calibrate)(struct ths_device *tmdev,
  75                                      u16 *caldata, int callen);
  76         int             (*init)(struct ths_device *tmdev);
  77         int             (*irq_ack)(struct ths_device *tmdev);
  78         int             (*calc_temp)(struct ths_device *tmdev,
  79                                      int id, int reg);
  80 };
  81
  82 struct ths_device {
  83         const struct ths_thermal_chip           *chip;
  84         struct device                           *dev;
  85         struct regmap                           *regmap;
  86         struct reset_control                    *reset;
  87         struct clk                              *bus_clk;
  88         struct clk                              *mod_clk;
  89         struct tsensor                          sensor[MAX_SENSOR_NUM];
  90 };
  91
  92 /* Temp Unit: millidegree Celsius */
  93 static int sun8i_ths_calc_temp(struct ths_device *tmdev,
  94                                int id, int reg)
  95 {
  96         return tmdev->chip->offset - (reg * tmdev->chip->scale / 10);
  97 }
  98
  99 static int sun50i_h5_calc_temp(struct ths_device *tmdev,
 100                                int id, int reg)
 101 {
 102         if (reg >= 0x500)
 103                 return -1191 * reg / 10 + 223000;
 104         else if (!id)
 105                 return -1452 * reg / 10 + 259000;
 106         else
 107                 return -1590 * reg / 10 + 276000;
 108 }
 109
 110 static int sun8i_ths_get_temp(void *data, int *temp)
 111 {
 112         struct tsensor *s = data;
 113         struct ths_device *tmdev = s->tmdev;
 114         int val = 0;
 115
 116         regmap_read(tmdev->regmap, tmdev->chip->temp_data_base +
 117                     0x4 * s->id, &val);
 118
 119         /* ths have no data yet */
 120         if (!val)
 121                 return -EAGAIN;
 122
 123         *temp = tmdev->chip->calc_temp(tmdev, s->id, val);
 124         /*
 125          * According to the original sdk, there are some platforms(rarely)
 126          * that add a fixed offset value after calculating the temperature
 127          * value. We can't simply put it on the formula for calculating the
 128          * temperature above, because the formula for calculating the
 129          * temperature above is also used when the sensor is calibrated. If
 130          * do this, the correct calibration formula is hard to know.
 131          */
 132         *temp += tmdev->chip->ft_deviation;
 133
 134         return 0;
 135 }
 136
 137 static const struct thermal_zone_of_device_ops ths_ops = {
 138         .get_temp = sun8i_ths_get_temp,
 139 };
 140
 141 static const struct regmap_config config = {
 142         .reg_bits = 32,
 143         .val_bits = 32,
 144         .reg_stride = 4,
 145         .fast_io = true,
 146         .max_register = 0xfc,
 147 };
 148
 149 static int sun8i_h3_irq_ack(struct ths_device *tmdev)
 150 {
 151         int i, state, ret = 0;
 152
 153         regmap_read(tmdev->regmap, SUN8I_THS_IS, &state);
 154
 155         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 156                 if (state & SUN8I_THS_DATA_IRQ_STS(i)) {
 157                         regmap_write(tmdev->regmap, SUN8I_THS_IS,
 158                                      SUN8I_THS_DATA_IRQ_STS(i));
 159                         ret |= BIT(i);
 160                 }
 161         }
 162
 163         return ret;
 164 }
 165
 166 static int sun50i_h6_irq_ack(struct ths_device *tmdev)
 167 {
 168         int i, state, ret = 0;
 169
 170         regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);
 171
 172         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 173                 if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
 174                         regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
 175                                      SUN50I_H6_THS_DATA_IRQ_STS(i));
 176                         ret |= BIT(i);
 177                 }
 178         }
 179
 180         return ret;
 181 }
 182
 183 static irqreturn_t sun8i_irq_thread(int irq, void *data)
 184 {
 185         struct ths_device *tmdev = data;
 186         int i, state;
 187
 188         state = tmdev->chip->irq_ack(tmdev);
 189
 190         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 191                 if (state & BIT(i))
 192                         thermal_zone_device_update(tmdev->sensor[i].tzd,
 193                                                    THERMAL_EVENT_UNSPECIFIED);
 194         }
 195
 196         return IRQ_HANDLED;
 197 }
 198
 199 static int sun8i_h3_ths_calibrate(struct ths_device *tmdev,
 200                                   u16 *caldata, int callen)
 201 {
 202         int i;
 203
 204         if (!caldata[0] || callen < 2 * tmdev->chip->sensor_num)
 205                 return -EINVAL;
 206
 207         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 208                 int offset = (i % 2) << 4;
 209
 210                 regmap_update_bits(tmdev->regmap,
 211                                    SUN8I_THS_TEMP_CALIB + (4 * (i >> 1)),
 212                                    0xfff << offset,
 213                                    caldata[i] << offset);
 214         }
 215
 216         return 0;
 217 }
 218
 219 static int sun50i_h6_ths_calibrate(struct ths_device *tmdev,
 220                                    u16 *caldata, int callen)
 221 {
 222         struct device *dev = tmdev->dev;
 223         int i, ft_temp;
 224
 225         if (!caldata[0] || callen < 2 + 2 * tmdev->chip->sensor_num)
 226                 return -EINVAL;
 227
 228         /*
 229          * efuse layout:
 230          *
 231          *      0   11  16       32
 232          *      +-------+-------+-------+
 233          *      |temp|  |sensor0|sensor1|
 234          *      +-------+-------+-------+
 235          *
 236          * The calibration data on the H6 is the ambient temperature and
 237          * sensor values that are filled during the factory test stage.
 238          *
 239          * The unit of stored FT temperature is 0.1 degreee celusis.
 240          *
 241          * We need to calculate a delta between measured and caluclated
 242          * register values and this will become a calibration offset.
 243          */
 244         ft_temp = (caldata[0] & FT_TEMP_MASK) * 100;
 245
 246         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 247                 int sensor_reg = caldata[i + 1] & TEMP_CALIB_MASK;
 248                 int cdata, offset;
 249                 int sensor_temp = tmdev->chip->calc_temp(tmdev, i, sensor_reg);
 250
 251                 /*
 252                  * Calibration data is CALIBRATE_DEFAULT - (calculated
 253                  * temperature from sensor reading at factory temperature
 254                  * minus actual factory temperature) * 14.88 (scale from
 255                  * temperature to register values)
 256                  */
 257                 cdata = CALIBRATE_DEFAULT -
 258                         ((sensor_temp - ft_temp) * 10 / tmdev->chip->scale);
 259                 if (cdata & ~TEMP_CALIB_MASK) {
 260                         /*
 261                          * Calibration value more than 12-bit, but calibration
 262                          * register is 12-bit. In this case, ths hardware can
 263                          * still work without calibration, although the data
 264                          * won't be so accurate.
 265                          */
 266                         dev_warn(dev, "sensor%d is not calibrated.\n", i);
 267                         continue;
 268                 }
 269
 270                 offset = (i % 2) * 16;
 271                 regmap_update_bits(tmdev->regmap,
 272                                    SUN50I_H6_THS_TEMP_CALIB + (i / 2 * 4),
 273                                    0xfff << offset,
 274                                    cdata << offset);
 275         }
 276
 277         return 0;
 278 }
 279
 280 static int sun8i_ths_calibrate(struct ths_device *tmdev)
 281 {
 282         struct nvmem_cell *calcell;
 283         struct device *dev = tmdev->dev;
 284         u16 *caldata;
 285         size_t callen;
 286         int ret = 0;
 287
 288         calcell = devm_nvmem_cell_get(dev, "calibration");
 289         if (IS_ERR(calcell)) {
 290                 if (PTR_ERR(calcell) == -EPROBE_DEFER)
 291                         return -EPROBE_DEFER;
 292                 /*
 293                  * Even if the external calibration data stored in sid is
 294                  * not accessible, the THS hardware can still work, although
 295                  * the data won't be so accurate.
 296                  *
 297                  * The default value of calibration register is 0x800 for
 298                  * every sensor, and the calibration value is usually 0x7xx
 299                  * or 0x8xx, so they won't be away from the default value
 300                  * for a lot.
 301                  *
 302                  * So here we do not return error if the calibartion data is
 303                  * not available, except the probe needs deferring.
 304                  */
 305                 goto out;
 306         }
 307
 308         caldata = nvmem_cell_read(calcell, &callen);
 309         if (IS_ERR(caldata)) {
 310                 ret = PTR_ERR(caldata);
 311                 goto out;
 312         }
 313
 314         tmdev->chip->calibrate(tmdev, caldata, callen);
 315
 316         kfree(caldata);
 317 out:
 318         return ret;
 319 }
 320
 321 static int sun8i_ths_resource_init(struct ths_device *tmdev)
 322 {
 323         struct device *dev = tmdev->dev;
 324         struct platform_device *pdev = to_platform_device(dev);
 325         void __iomem *base;
 326         int ret;
 327
 328         base = devm_platform_ioremap_resource(pdev, 0);
 329         if (IS_ERR(base))
 330                 return PTR_ERR(base);
 331
 332         tmdev->regmap = devm_regmap_init_mmio(dev, base, &config);
 333         if (IS_ERR(tmdev->regmap))
 334                 return PTR_ERR(tmdev->regmap);
 335
 336         if (tmdev->chip->has_bus_clk_reset) {
 337                 tmdev->reset = devm_reset_control_get(dev, NULL);
 338                 if (IS_ERR(tmdev->reset))
 339                         return PTR_ERR(tmdev->reset);
 340
 341                 tmdev->bus_clk = devm_clk_get(&pdev->dev, "bus");
 342                 if (IS_ERR(tmdev->bus_clk))
 343                         return PTR_ERR(tmdev->bus_clk);
 344         }
 345
 346         if (tmdev->chip->has_mod_clk) {
 347                 tmdev->mod_clk = devm_clk_get(&pdev->dev, "mod");
 348                 if (IS_ERR(tmdev->mod_clk))
 349                         return PTR_ERR(tmdev->mod_clk);
 350         }
 351
 352         ret = reset_control_deassert(tmdev->reset);
 353         if (ret)
 354                 return ret;
 355
 356         ret = clk_prepare_enable(tmdev->bus_clk);
 357         if (ret)
 358                 goto assert_reset;
 359
 360         ret = clk_set_rate(tmdev->mod_clk, 24000000);
 361         if (ret)
 362                 goto bus_disable;
 363
 364         ret = clk_prepare_enable(tmdev->mod_clk);
 365         if (ret)
 366                 goto bus_disable;
 367
 368         ret = sun8i_ths_calibrate(tmdev);
 369         if (ret)
 370                 goto mod_disable;
 371
 372         return 0;
 373
 374 mod_disable:
 375         clk_disable_unprepare(tmdev->mod_clk);
 376 bus_disable:
 377         clk_disable_unprepare(tmdev->bus_clk);
 378 assert_reset:
 379         reset_control_assert(tmdev->reset);
 380
 381         return ret;
 382 }
 383
 384 static int sun8i_h3_thermal_init(struct ths_device *tmdev)
 385 {
 386         int val;
 387
 388         /* average over 4 samples */
 389         regmap_write(tmdev->regmap, SUN8I_THS_MFC,
 390                      SUN50I_THS_FILTER_EN |
 391                      SUN50I_THS_FILTER_TYPE(1));
 392         /*
 393          * clkin = 24MHz
 394          * filter_samples = 4
 395          * period = 0.25s
 396          *
 397          * x = period * clkin / 4096 / filter_samples - 1
 398          *   = 365
 399          */
 400         val = GENMASK(7 + tmdev->chip->sensor_num, 8);
 401         regmap_write(tmdev->regmap, SUN8I_THS_IC,
 402                      SUN50I_H6_THS_PC_TEMP_PERIOD(365) | val);
 403         /*
 404          * T_acq = 20us
 405          * clkin = 24MHz
 406          *
 407          * x = T_acq * clkin - 1
 408          *   = 479
 409          */
 410         regmap_write(tmdev->regmap, SUN8I_THS_CTRL0,
 411                      SUN8I_THS_CTRL0_T_ACQ0(479));
 412         val = GENMASK(tmdev->chip->sensor_num - 1, 0);
 413         regmap_write(tmdev->regmap, SUN8I_THS_CTRL2,
 414                      SUN8I_THS_CTRL2_T_ACQ1(479) | val);
 415
 416         return 0;
 417 }
 418
 419 /*
 420  * Without this undocummented value, the returned temperatures would
 421  * be higher than real ones by about 20C.
 422  */
 423 #define SUN50I_H6_CTRL0_UNK 0x0000002f
 424
 425 static int sun50i_h6_thermal_init(struct ths_device *tmdev)
 426 {
 427         int val;
 428
 429         /*
 430          * T_acq = 20us
 431          * clkin = 24MHz
 432          *
 433          * x = T_acq * clkin - 1
 434          *   = 479
 435          */
 436         regmap_write(tmdev->regmap, SUN50I_THS_CTRL0,
 437                      SUN50I_H6_CTRL0_UNK | SUN50I_THS_CTRL0_T_ACQ(479));
 438         /* average over 4 samples */
 439         regmap_write(tmdev->regmap, SUN50I_H6_THS_MFC,
 440                      SUN50I_THS_FILTER_EN |
 441                      SUN50I_THS_FILTER_TYPE(1));
 442         /*
 443          * clkin = 24MHz
 444          * filter_samples = 4
 445          * period = 0.25s
 446          *
 447          * x = period * clkin / 4096 / filter_samples - 1
 448          *   = 365
 449          */
 450         regmap_write(tmdev->regmap, SUN50I_H6_THS_PC,
 451                      SUN50I_H6_THS_PC_TEMP_PERIOD(365));
 452         /* enable sensor */
 453         val = GENMASK(tmdev->chip->sensor_num - 1, 0);
 454         regmap_write(tmdev->regmap, SUN50I_H6_THS_ENABLE, val);
 455         /* thermal data interrupt enable */
 456         val = GENMASK(tmdev->chip->sensor_num - 1, 0);
 457         regmap_write(tmdev->regmap, SUN50I_H6_THS_DIC, val);
 458
 459         return 0;
 460 }
 461
 462 static int sun8i_ths_register(struct ths_device *tmdev)
 463 {
 464         int i;
 465
 466         for (i = 0; i < tmdev->chip->sensor_num; i++) {
 467                 tmdev->sensor[i].tmdev = tmdev;
 468                 tmdev->sensor[i].id = i;
 469                 tmdev->sensor[i].tzd =
 470                         devm_thermal_zone_of_sensor_register(tmdev->dev,
 471                                                              i,
 472                                                              &tmdev->sensor[i],
 473                                                              &ths_ops);
 474                 if (IS_ERR(tmdev->sensor[i].tzd))
 475                         return PTR_ERR(tmdev->sensor[i].tzd);
 476
 477                 if (devm_thermal_add_hwmon_sysfs(tmdev->sensor[i].tzd))
 478                         dev_warn(tmdev->dev,
 479                                  "Failed to add hwmon sysfs attributes\n");
 480         }
 481
 482         return 0;
 483 }
 484
 485 static int sun8i_ths_probe(struct platform_device *pdev)
 486 {
 487         struct ths_device *tmdev;
 488         struct device *dev = &pdev->dev;
 489         int ret, irq;
 490
 491         tmdev = devm_kzalloc(dev, sizeof(*tmdev), GFP_KERNEL);
 492         if (!tmdev)
 493                 return -ENOMEM;
 494
 495         tmdev->dev = dev;
 496         tmdev->chip = of_device_get_match_data(&pdev->dev);
 497         if (!tmdev->chip)
 498                 return -EINVAL;
 499
 500         platform_set_drvdata(pdev, tmdev);
 501
 502         ret = sun8i_ths_resource_init(tmdev);
 503         if (ret)
 504                 return ret;
 505
 506         irq = platform_get_irq(pdev, 0);
 507         if (irq < 0)
 508                 return irq;
 509
 510         ret = tmdev->chip->init(tmdev);
 511         if (ret)
 512                 return ret;
 513
 514         ret = sun8i_ths_register(tmdev);
 515         if (ret)
 516                 return ret;
 517
 518         /*
 519          * Avoid entering the interrupt handler, the thermal device is not
 520          * registered yet, we deffer the registration of the interrupt to
 521          * the end.
 522          */
 523         ret = devm_request_threaded_irq(dev, irq, NULL,
 524                                         sun8i_irq_thread,
 525                                         IRQF_ONESHOT, "ths", tmdev);
 526         if (ret)
 527                 return ret;
 528
 529         return 0;
 530 }
 531
 532 static int sun8i_ths_remove(struct platform_device *pdev)
 533 {
 534         struct ths_device *tmdev = platform_get_drvdata(pdev);
 535
 536         clk_disable_unprepare(tmdev->mod_clk);
 537         clk_disable_unprepare(tmdev->bus_clk);
 538         reset_control_assert(tmdev->reset);
 539
 540         return 0;
 541 }
 542
 543 static const struct ths_thermal_chip sun8i_a83t_ths = {
 544         .sensor_num = 3,
 545         .scale = 705,
 546         .offset = 191668,
 547         .temp_data_base = SUN8I_THS_TEMP_DATA,
 548         .calibrate = sun8i_h3_ths_calibrate,
 549         .init = sun8i_h3_thermal_init,
 550         .irq_ack = sun8i_h3_irq_ack,
 551         .calc_temp = sun8i_ths_calc_temp,
 552 };
 553
 554 static const struct ths_thermal_chip sun8i_h3_ths = {
 555         .sensor_num = 1,
 556         .scale = 1211,
 557         .offset = 217000,
 558         .has_mod_clk = true,
 559         .has_bus_clk_reset = true,
 560         .temp_data_base = SUN8I_THS_TEMP_DATA,
 561         .calibrate = sun8i_h3_ths_calibrate,
 562         .init = sun8i_h3_thermal_init,
 563         .irq_ack = sun8i_h3_irq_ack,
 564         .calc_temp = sun8i_ths_calc_temp,
 565 };
 566
 567 static const struct ths_thermal_chip sun8i_r40_ths = {
 568         .sensor_num = 2,
 569         .offset = 251086,
 570         .scale = 1130,
 571         .has_mod_clk = true,
 572         .has_bus_clk_reset = true,
 573         .temp_data_base = SUN8I_THS_TEMP_DATA,
 574         .calibrate = sun8i_h3_ths_calibrate,
 575         .init = sun8i_h3_thermal_init,
 576         .irq_ack = sun8i_h3_irq_ack,
 577         .calc_temp = sun8i_ths_calc_temp,
 578 };
 579
 580 static const struct ths_thermal_chip sun50i_a64_ths = {
 581         .sensor_num = 3,
 582         .offset = 260890,
 583         .scale = 1170,
 584         .has_mod_clk = true,
 585         .has_bus_clk_reset = true,
 586         .temp_data_base = SUN8I_THS_TEMP_DATA,
 587         .calibrate = sun8i_h3_ths_calibrate,
 588         .init = sun8i_h3_thermal_init,
 589         .irq_ack = sun8i_h3_irq_ack,
 590         .calc_temp = sun8i_ths_calc_temp,
 591 };
 592
 593 static const struct ths_thermal_chip sun50i_a100_ths = {
 594         .sensor_num = 3,
 595         .has_bus_clk_reset = true,
 596         .ft_deviation = 8000,
 597         .offset = 187744,
 598         .scale = 672,
 599         .temp_data_base = SUN50I_H6_THS_TEMP_DATA,
 600         .calibrate = sun50i_h6_ths_calibrate,
 601         .init = sun50i_h6_thermal_init,
 602         .irq_ack = sun50i_h6_irq_ack,
 603         .calc_temp = sun8i_ths_calc_temp,
 604 };
 605
 606 static const struct ths_thermal_chip sun50i_h5_ths = {
 607         .sensor_num = 2,
 608         .has_mod_clk = true,
 609         .has_bus_clk_reset = true,
 610         .temp_data_base = SUN8I_THS_TEMP_DATA,
 611         .calibrate = sun8i_h3_ths_calibrate,
 612         .init = sun8i_h3_thermal_init,
 613         .irq_ack = sun8i_h3_irq_ack,
 614         .calc_temp = sun50i_h5_calc_temp,
 615 };
 616
 617 static const struct ths_thermal_chip sun50i_h6_ths = {
 618         .sensor_num = 2,
 619         .has_bus_clk_reset = true,
 620         .ft_deviation = 7000,
 621         .offset = 187744,
 622         .scale = 672,
 623         .temp_data_base = SUN50I_H6_THS_TEMP_DATA,
 624         .calibrate = sun50i_h6_ths_calibrate,
 625         .init = sun50i_h6_thermal_init,
 626         .irq_ack = sun50i_h6_irq_ack,
 627         .calc_temp = sun8i_ths_calc_temp,
 628 };
 629
 630 static const struct of_device_id of_ths_match[] = {
 631         { .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
 632         { .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
 633         { .compatible = "allwinner,sun8i-r40-ths", .data = &sun8i_r40_ths },
 634         { .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths },
 635         { .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
 636         { .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
 637         { .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
 638         { /* sentinel */ },
 639 };
 640 MODULE_DEVICE_TABLE(of, of_ths_match);
 641
 642 static struct platform_driver ths_driver = {
 643         .probe = sun8i_ths_probe,
 644         .remove = sun8i_ths_remove,
 645         .driver = {
 646                 .name = "sun8i-thermal",
 647                 .of_match_table = of_ths_match,
 648         },
 649 };
 650 module_platform_driver(ths_driver);
 651
 652 MODULE_DESCRIPTION("Thermal sensor driver for Allwinner SOC");
 653 MODULE_LICENSE("GPL v2");