1 /* 2 * Copyright 2013 Freescale Semiconductor, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/cpu_cooling.h> 12 #include <linux/cpufreq.h> 13 #include <linux/delay.h> 14 #include <linux/device.h> 15 #include <linux/init.h> 16 #include <linux/interrupt.h> 17 #include <linux/io.h> 18 #include <linux/kernel.h> 19 #include <linux/mfd/syscon.h> 20 #include <linux/module.h> 21 #include <linux/of.h> 22 #include <linux/of_device.h> 23 #include <linux/platform_device.h> 24 #include <linux/regmap.h> 25 #include <linux/slab.h> 26 #include <linux/thermal.h> 27 #include <linux/types.h> 28 29 #define REG_SET 0x4 30 #define REG_CLR 0x8 31 #define REG_TOG 0xc 32 33 #define MISC0 0x0150 34 #define MISC0_REFTOP_SELBIASOFF (1 << 3) 35 #define MISC1 0x0160 36 #define MISC1_IRQ_TEMPHIGH (1 << 29) 37 /* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */ 38 #define MISC1_IRQ_TEMPLOW (1 << 28) 39 #define MISC1_IRQ_TEMPPANIC (1 << 27) 40 41 #define TEMPSENSE0 0x0180 42 #define TEMPSENSE0_ALARM_VALUE_SHIFT 20 43 #define TEMPSENSE0_ALARM_VALUE_MASK (0xfff << TEMPSENSE0_ALARM_VALUE_SHIFT) 44 #define TEMPSENSE0_TEMP_CNT_SHIFT 8 45 #define TEMPSENSE0_TEMP_CNT_MASK (0xfff << TEMPSENSE0_TEMP_CNT_SHIFT) 46 #define TEMPSENSE0_FINISHED (1 << 2) 47 #define TEMPSENSE0_MEASURE_TEMP (1 << 1) 48 #define TEMPSENSE0_POWER_DOWN (1 << 0) 49 50 #define TEMPSENSE1 0x0190 51 #define TEMPSENSE1_MEASURE_FREQ 0xffff 52 /* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */ 53 #define TEMPSENSE2 0x0290 54 #define TEMPSENSE2_LOW_VALUE_SHIFT 0 55 #define TEMPSENSE2_LOW_VALUE_MASK 0xfff 56 #define TEMPSENSE2_PANIC_VALUE_SHIFT 16 57 #define TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000 58 59 #define OCOTP_ANA1 0x04e0 60 61 /* The driver supports 1 passive trip point and 1 critical trip point */ 62 enum imx_thermal_trip { 63 IMX_TRIP_PASSIVE, 64 IMX_TRIP_CRITICAL, 65 IMX_TRIP_NUM, 66 }; 67 68 /* 69 * It defines the temperature in millicelsius for passive trip point 70 * that will trigger cooling action when crossed. 71 */ 72 #define IMX_TEMP_PASSIVE 85000 73 74 #define IMX_POLLING_DELAY 2000 /* millisecond */ 75 #define IMX_PASSIVE_DELAY 1000 76 77 #define FACTOR0 10000000 78 #define FACTOR1 15976 79 #define FACTOR2 4297157 80 81 #define TEMPMON_IMX6Q 1 82 #define TEMPMON_IMX6SX 2 83 84 struct thermal_soc_data { 85 u32 version; 86 }; 87 88 static struct thermal_soc_data thermal_imx6q_data = { 89 .version = TEMPMON_IMX6Q, 90 }; 91 92 static struct thermal_soc_data thermal_imx6sx_data = { 93 .version = TEMPMON_IMX6SX, 94 }; 95 96 struct imx_thermal_data { 97 struct thermal_zone_device *tz; 98 struct thermal_cooling_device *cdev; 99 enum thermal_device_mode mode; 100 struct regmap *tempmon; 101 u32 c1, c2; /* See formula in imx_get_sensor_data() */ 102 unsigned long temp_passive; 103 unsigned long temp_critical; 104 unsigned long alarm_temp; 105 unsigned long last_temp; 106 bool irq_enabled; 107 int irq; 108 struct clk *thermal_clk; 109 const struct thermal_soc_data *socdata; 110 }; 111 112 static void imx_set_panic_temp(struct imx_thermal_data *data, 113 signed long panic_temp) 114 { 115 struct regmap *map = data->tempmon; 116 int critical_value; 117 118 critical_value = (data->c2 - panic_temp) / data->c1; 119 regmap_write(map, TEMPSENSE2 + REG_CLR, TEMPSENSE2_PANIC_VALUE_MASK); 120 regmap_write(map, TEMPSENSE2 + REG_SET, critical_value << 121 TEMPSENSE2_PANIC_VALUE_SHIFT); 122 } 123 124 static void imx_set_alarm_temp(struct imx_thermal_data *data, 125 signed long alarm_temp) 126 { 127 struct regmap *map = data->tempmon; 128 int alarm_value; 129 130 data->alarm_temp = alarm_temp; 131 alarm_value = (data->c2 - alarm_temp) / data->c1; 132 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_ALARM_VALUE_MASK); 133 regmap_write(map, TEMPSENSE0 + REG_SET, alarm_value << 134 TEMPSENSE0_ALARM_VALUE_SHIFT); 135 } 136 137 static int imx_get_temp(struct thermal_zone_device *tz, unsigned long *temp) 138 { 139 struct imx_thermal_data *data = tz->devdata; 140 struct regmap *map = data->tempmon; 141 unsigned int n_meas; 142 bool wait; 143 u32 val; 144 145 if (data->mode == THERMAL_DEVICE_ENABLED) { 146 /* Check if a measurement is currently in progress */ 147 regmap_read(map, TEMPSENSE0, &val); 148 wait = !(val & TEMPSENSE0_FINISHED); 149 } else { 150 /* 151 * Every time we measure the temperature, we will power on the 152 * temperature sensor, enable measurements, take a reading, 153 * disable measurements, power off the temperature sensor. 154 */ 155 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); 156 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); 157 158 wait = true; 159 } 160 161 /* 162 * According to the temp sensor designers, it may require up to ~17us 163 * to complete a measurement. 164 */ 165 if (wait) 166 usleep_range(20, 50); 167 168 regmap_read(map, TEMPSENSE0, &val); 169 170 if (data->mode != THERMAL_DEVICE_ENABLED) { 171 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP); 172 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); 173 } 174 175 if ((val & TEMPSENSE0_FINISHED) == 0) { 176 dev_dbg(&tz->device, "temp measurement never finished\n"); 177 return -EAGAIN; 178 } 179 180 n_meas = (val & TEMPSENSE0_TEMP_CNT_MASK) >> TEMPSENSE0_TEMP_CNT_SHIFT; 181 182 /* See imx_get_sensor_data() for formula derivation */ 183 *temp = data->c2 - n_meas * data->c1; 184 185 /* Update alarm value to next higher trip point for TEMPMON_IMX6Q */ 186 if (data->socdata->version == TEMPMON_IMX6Q) { 187 if (data->alarm_temp == data->temp_passive && 188 *temp >= data->temp_passive) 189 imx_set_alarm_temp(data, data->temp_critical); 190 if (data->alarm_temp == data->temp_critical && 191 *temp < data->temp_passive) { 192 imx_set_alarm_temp(data, data->temp_passive); 193 dev_dbg(&tz->device, "thermal alarm off: T < %lu\n", 194 data->alarm_temp / 1000); 195 } 196 } 197 198 if (*temp != data->last_temp) { 199 dev_dbg(&tz->device, "millicelsius: %ld\n", *temp); 200 data->last_temp = *temp; 201 } 202 203 /* Reenable alarm IRQ if temperature below alarm temperature */ 204 if (!data->irq_enabled && *temp < data->alarm_temp) { 205 data->irq_enabled = true; 206 enable_irq(data->irq); 207 } 208 209 return 0; 210 } 211 212 static int imx_get_mode(struct thermal_zone_device *tz, 213 enum thermal_device_mode *mode) 214 { 215 struct imx_thermal_data *data = tz->devdata; 216 217 *mode = data->mode; 218 219 return 0; 220 } 221 222 static int imx_set_mode(struct thermal_zone_device *tz, 223 enum thermal_device_mode mode) 224 { 225 struct imx_thermal_data *data = tz->devdata; 226 struct regmap *map = data->tempmon; 227 228 if (mode == THERMAL_DEVICE_ENABLED) { 229 tz->polling_delay = IMX_POLLING_DELAY; 230 tz->passive_delay = IMX_PASSIVE_DELAY; 231 232 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); 233 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); 234 235 if (!data->irq_enabled) { 236 data->irq_enabled = true; 237 enable_irq(data->irq); 238 } 239 } else { 240 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP); 241 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); 242 243 tz->polling_delay = 0; 244 tz->passive_delay = 0; 245 246 if (data->irq_enabled) { 247 disable_irq(data->irq); 248 data->irq_enabled = false; 249 } 250 } 251 252 data->mode = mode; 253 thermal_zone_device_update(tz); 254 255 return 0; 256 } 257 258 static int imx_get_trip_type(struct thermal_zone_device *tz, int trip, 259 enum thermal_trip_type *type) 260 { 261 *type = (trip == IMX_TRIP_PASSIVE) ? THERMAL_TRIP_PASSIVE : 262 THERMAL_TRIP_CRITICAL; 263 return 0; 264 } 265 266 static int imx_get_crit_temp(struct thermal_zone_device *tz, 267 unsigned long *temp) 268 { 269 struct imx_thermal_data *data = tz->devdata; 270 271 *temp = data->temp_critical; 272 return 0; 273 } 274 275 static int imx_get_trip_temp(struct thermal_zone_device *tz, int trip, 276 unsigned long *temp) 277 { 278 struct imx_thermal_data *data = tz->devdata; 279 280 *temp = (trip == IMX_TRIP_PASSIVE) ? data->temp_passive : 281 data->temp_critical; 282 return 0; 283 } 284 285 static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip, 286 unsigned long temp) 287 { 288 struct imx_thermal_data *data = tz->devdata; 289 290 if (trip == IMX_TRIP_CRITICAL) 291 return -EPERM; 292 293 if (temp > IMX_TEMP_PASSIVE) 294 return -EINVAL; 295 296 data->temp_passive = temp; 297 298 imx_set_alarm_temp(data, temp); 299 300 return 0; 301 } 302 303 static int imx_bind(struct thermal_zone_device *tz, 304 struct thermal_cooling_device *cdev) 305 { 306 int ret; 307 308 ret = thermal_zone_bind_cooling_device(tz, IMX_TRIP_PASSIVE, cdev, 309 THERMAL_NO_LIMIT, 310 THERMAL_NO_LIMIT); 311 if (ret) { 312 dev_err(&tz->device, 313 "binding zone %s with cdev %s failed:%d\n", 314 tz->type, cdev->type, ret); 315 return ret; 316 } 317 318 return 0; 319 } 320 321 static int imx_unbind(struct thermal_zone_device *tz, 322 struct thermal_cooling_device *cdev) 323 { 324 int ret; 325 326 ret = thermal_zone_unbind_cooling_device(tz, IMX_TRIP_PASSIVE, cdev); 327 if (ret) { 328 dev_err(&tz->device, 329 "unbinding zone %s with cdev %s failed:%d\n", 330 tz->type, cdev->type, ret); 331 return ret; 332 } 333 334 return 0; 335 } 336 337 static struct thermal_zone_device_ops imx_tz_ops = { 338 .bind = imx_bind, 339 .unbind = imx_unbind, 340 .get_temp = imx_get_temp, 341 .get_mode = imx_get_mode, 342 .set_mode = imx_set_mode, 343 .get_trip_type = imx_get_trip_type, 344 .get_trip_temp = imx_get_trip_temp, 345 .get_crit_temp = imx_get_crit_temp, 346 .set_trip_temp = imx_set_trip_temp, 347 }; 348 349 static int imx_get_sensor_data(struct platform_device *pdev) 350 { 351 struct imx_thermal_data *data = platform_get_drvdata(pdev); 352 struct regmap *map; 353 int t1, n1; 354 int ret; 355 u32 val; 356 u64 temp64; 357 358 map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 359 "fsl,tempmon-data"); 360 if (IS_ERR(map)) { 361 ret = PTR_ERR(map); 362 dev_err(&pdev->dev, "failed to get sensor regmap: %d\n", ret); 363 return ret; 364 } 365 366 ret = regmap_read(map, OCOTP_ANA1, &val); 367 if (ret) { 368 dev_err(&pdev->dev, "failed to read sensor data: %d\n", ret); 369 return ret; 370 } 371 372 if (val == 0 || val == ~0) { 373 dev_err(&pdev->dev, "invalid sensor calibration data\n"); 374 return -EINVAL; 375 } 376 377 /* 378 * Sensor data layout: 379 * [31:20] - sensor value @ 25C 380 * Use universal formula now and only need sensor value @ 25C 381 * slope = 0.4297157 - (0.0015976 * 25C fuse) 382 */ 383 n1 = val >> 20; 384 t1 = 25; /* t1 always 25C */ 385 386 /* 387 * Derived from linear interpolation: 388 * slope = 0.4297157 - (0.0015976 * 25C fuse) 389 * slope = (FACTOR2 - FACTOR1 * n1) / FACTOR0 390 * (Nmeas - n1) / (Tmeas - t1) = slope 391 * We want to reduce this down to the minimum computation necessary 392 * for each temperature read. Also, we want Tmeas in millicelsius 393 * and we don't want to lose precision from integer division. So... 394 * Tmeas = (Nmeas - n1) / slope + t1 395 * milli_Tmeas = 1000 * (Nmeas - n1) / slope + 1000 * t1 396 * milli_Tmeas = -1000 * (n1 - Nmeas) / slope + 1000 * t1 397 * Let constant c1 = (-1000 / slope) 398 * milli_Tmeas = (n1 - Nmeas) * c1 + 1000 * t1 399 * Let constant c2 = n1 *c1 + 1000 * t1 400 * milli_Tmeas = c2 - Nmeas * c1 401 */ 402 temp64 = FACTOR0; 403 temp64 *= 1000; 404 do_div(temp64, FACTOR1 * n1 - FACTOR2); 405 data->c1 = temp64; 406 data->c2 = n1 * data->c1 + 1000 * t1; 407 408 /* 409 * Set the default passive cooling trip point, 410 * can be changed from userspace. 411 */ 412 data->temp_passive = IMX_TEMP_PASSIVE; 413 414 /* 415 * The maximum die temperature set to 20 C higher than 416 * IMX_TEMP_PASSIVE. 417 */ 418 data->temp_critical = 1000 * 20 + data->temp_passive; 419 420 return 0; 421 } 422 423 static irqreturn_t imx_thermal_alarm_irq(int irq, void *dev) 424 { 425 struct imx_thermal_data *data = dev; 426 427 disable_irq_nosync(irq); 428 data->irq_enabled = false; 429 430 return IRQ_WAKE_THREAD; 431 } 432 433 static irqreturn_t imx_thermal_alarm_irq_thread(int irq, void *dev) 434 { 435 struct imx_thermal_data *data = dev; 436 437 dev_dbg(&data->tz->device, "THERMAL ALARM: T > %lu\n", 438 data->alarm_temp / 1000); 439 440 thermal_zone_device_update(data->tz); 441 442 return IRQ_HANDLED; 443 } 444 445 static const struct of_device_id of_imx_thermal_match[] = { 446 { .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, }, 447 { .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, }, 448 { /* end */ } 449 }; 450 MODULE_DEVICE_TABLE(of, of_imx_thermal_match); 451 452 static int imx_thermal_probe(struct platform_device *pdev) 453 { 454 const struct of_device_id *of_id = 455 of_match_device(of_imx_thermal_match, &pdev->dev); 456 struct imx_thermal_data *data; 457 struct cpumask clip_cpus; 458 struct regmap *map; 459 int measure_freq; 460 int ret; 461 462 if (!cpufreq_get_current_driver()) { 463 dev_dbg(&pdev->dev, "no cpufreq driver!"); 464 return -EPROBE_DEFER; 465 } 466 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 467 if (!data) 468 return -ENOMEM; 469 470 map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "fsl,tempmon"); 471 if (IS_ERR(map)) { 472 ret = PTR_ERR(map); 473 dev_err(&pdev->dev, "failed to get tempmon regmap: %d\n", ret); 474 return ret; 475 } 476 data->tempmon = map; 477 478 data->socdata = of_id->data; 479 480 /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */ 481 if (data->socdata->version == TEMPMON_IMX6SX) { 482 regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH | 483 MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC); 484 /* 485 * reset value of LOW ALARM is incorrect, set it to lowest 486 * value to avoid false trigger of low alarm. 487 */ 488 regmap_write(map, TEMPSENSE2 + REG_SET, 489 TEMPSENSE2_LOW_VALUE_MASK); 490 } 491 492 data->irq = platform_get_irq(pdev, 0); 493 if (data->irq < 0) 494 return data->irq; 495 496 ret = devm_request_threaded_irq(&pdev->dev, data->irq, 497 imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread, 498 0, "imx_thermal", data); 499 if (ret < 0) { 500 dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret); 501 return ret; 502 } 503 504 platform_set_drvdata(pdev, data); 505 506 ret = imx_get_sensor_data(pdev); 507 if (ret) { 508 dev_err(&pdev->dev, "failed to get sensor data\n"); 509 return ret; 510 } 511 512 /* Make sure sensor is in known good state for measurements */ 513 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); 514 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP); 515 regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ); 516 regmap_write(map, MISC0 + REG_SET, MISC0_REFTOP_SELBIASOFF); 517 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); 518 519 cpumask_set_cpu(0, &clip_cpus); 520 data->cdev = cpufreq_cooling_register(&clip_cpus); 521 if (IS_ERR(data->cdev)) { 522 ret = PTR_ERR(data->cdev); 523 dev_err(&pdev->dev, 524 "failed to register cpufreq cooling device: %d\n", ret); 525 return ret; 526 } 527 528 data->thermal_clk = devm_clk_get(&pdev->dev, NULL); 529 if (IS_ERR(data->thermal_clk)) { 530 ret = PTR_ERR(data->thermal_clk); 531 if (ret != -EPROBE_DEFER) 532 dev_err(&pdev->dev, 533 "failed to get thermal clk: %d\n", ret); 534 cpufreq_cooling_unregister(data->cdev); 535 return ret; 536 } 537 538 /* 539 * Thermal sensor needs clk on to get correct value, normally 540 * we should enable its clk before taking measurement and disable 541 * clk after measurement is done, but if alarm function is enabled, 542 * hardware will auto measure the temperature periodically, so we 543 * need to keep the clk always on for alarm function. 544 */ 545 ret = clk_prepare_enable(data->thermal_clk); 546 if (ret) { 547 dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret); 548 cpufreq_cooling_unregister(data->cdev); 549 return ret; 550 } 551 552 data->tz = thermal_zone_device_register("imx_thermal_zone", 553 IMX_TRIP_NUM, 554 BIT(IMX_TRIP_PASSIVE), data, 555 &imx_tz_ops, NULL, 556 IMX_PASSIVE_DELAY, 557 IMX_POLLING_DELAY); 558 if (IS_ERR(data->tz)) { 559 ret = PTR_ERR(data->tz); 560 dev_err(&pdev->dev, 561 "failed to register thermal zone device %d\n", ret); 562 clk_disable_unprepare(data->thermal_clk); 563 cpufreq_cooling_unregister(data->cdev); 564 return ret; 565 } 566 567 /* Enable measurements at ~ 10 Hz */ 568 regmap_write(map, TEMPSENSE1 + REG_CLR, TEMPSENSE1_MEASURE_FREQ); 569 measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */ 570 regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq); 571 imx_set_alarm_temp(data, data->temp_passive); 572 573 if (data->socdata->version == TEMPMON_IMX6SX) 574 imx_set_panic_temp(data, data->temp_critical); 575 576 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); 577 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); 578 579 data->irq_enabled = true; 580 data->mode = THERMAL_DEVICE_ENABLED; 581 582 return 0; 583 } 584 585 static int imx_thermal_remove(struct platform_device *pdev) 586 { 587 struct imx_thermal_data *data = platform_get_drvdata(pdev); 588 struct regmap *map = data->tempmon; 589 590 /* Disable measurements */ 591 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); 592 if (!IS_ERR(data->thermal_clk)) 593 clk_disable_unprepare(data->thermal_clk); 594 595 thermal_zone_device_unregister(data->tz); 596 cpufreq_cooling_unregister(data->cdev); 597 598 return 0; 599 } 600 601 #ifdef CONFIG_PM_SLEEP 602 static int imx_thermal_suspend(struct device *dev) 603 { 604 struct imx_thermal_data *data = dev_get_drvdata(dev); 605 struct regmap *map = data->tempmon; 606 607 /* 608 * Need to disable thermal sensor, otherwise, when thermal core 609 * try to get temperature before thermal sensor resume, a wrong 610 * temperature will be read as the thermal sensor is powered 611 * down. 612 */ 613 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_MEASURE_TEMP); 614 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_POWER_DOWN); 615 data->mode = THERMAL_DEVICE_DISABLED; 616 617 return 0; 618 } 619 620 static int imx_thermal_resume(struct device *dev) 621 { 622 struct imx_thermal_data *data = dev_get_drvdata(dev); 623 struct regmap *map = data->tempmon; 624 625 /* Enabled thermal sensor after resume */ 626 regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); 627 regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); 628 data->mode = THERMAL_DEVICE_ENABLED; 629 630 return 0; 631 } 632 #endif 633 634 static SIMPLE_DEV_PM_OPS(imx_thermal_pm_ops, 635 imx_thermal_suspend, imx_thermal_resume); 636 637 static struct platform_driver imx_thermal = { 638 .driver = { 639 .name = "imx_thermal", 640 .owner = THIS_MODULE, 641 .pm = &imx_thermal_pm_ops, 642 .of_match_table = of_imx_thermal_match, 643 }, 644 .probe = imx_thermal_probe, 645 .remove = imx_thermal_remove, 646 }; 647 module_platform_driver(imx_thermal); 648 649 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 650 MODULE_DESCRIPTION("Thermal driver for Freescale i.MX SoCs"); 651 MODULE_LICENSE("GPL v2"); 652 MODULE_ALIAS("platform:imx-thermal"); 653