1 /* 2 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 */ 13 14 #include <linux/clk.h> 15 #include <linux/delay.h> 16 #include <linux/interrupt.h> 17 #include <linux/io.h> 18 #include <linux/module.h> 19 #include <linux/of.h> 20 #include <linux/of_address.h> 21 #include <linux/of_irq.h> 22 #include <linux/platform_device.h> 23 #include <linux/reset.h> 24 #include <linux/thermal.h> 25 26 /** 27 * If the temperature over a period of time High, 28 * the resulting TSHUT gave CRU module,let it reset the entire chip, 29 * or via GPIO give PMIC. 30 */ 31 enum tshut_mode { 32 TSHUT_MODE_CRU = 0, 33 TSHUT_MODE_GPIO, 34 }; 35 36 /** 37 * the system Temperature Sensors tshut(tshut) polarity 38 * the bit 8 is tshut polarity. 39 * 0: low active, 1: high active 40 */ 41 enum tshut_polarity { 42 TSHUT_LOW_ACTIVE = 0, 43 TSHUT_HIGH_ACTIVE, 44 }; 45 46 /** 47 * The system has three Temperature Sensors. channel 0 is reserved, 48 * channel 1 is for CPU, and channel 2 is for GPU. 49 */ 50 enum sensor_id { 51 SENSOR_CPU = 1, 52 SENSOR_GPU, 53 }; 54 55 struct rockchip_tsadc_chip { 56 /* The hardware-controlled tshut property */ 57 long tshut_temp; 58 enum tshut_mode tshut_mode; 59 enum tshut_polarity tshut_polarity; 60 61 /* Chip-wide methods */ 62 void (*initialize)(void __iomem *reg, enum tshut_polarity p); 63 void (*irq_ack)(void __iomem *reg); 64 void (*control)(void __iomem *reg, bool on); 65 66 /* Per-sensor methods */ 67 int (*get_temp)(int chn, void __iomem *reg, long *temp); 68 void (*set_tshut_temp)(int chn, void __iomem *reg, long temp); 69 void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m); 70 }; 71 72 struct rockchip_thermal_sensor { 73 struct rockchip_thermal_data *thermal; 74 struct thermal_zone_device *tzd; 75 enum sensor_id id; 76 }; 77 78 #define NUM_SENSORS 2 /* Ignore unused sensor 0 */ 79 80 struct rockchip_thermal_data { 81 const struct rockchip_tsadc_chip *chip; 82 struct platform_device *pdev; 83 struct reset_control *reset; 84 85 struct rockchip_thermal_sensor sensors[NUM_SENSORS]; 86 87 struct clk *clk; 88 struct clk *pclk; 89 90 void __iomem *regs; 91 92 long tshut_temp; 93 enum tshut_mode tshut_mode; 94 enum tshut_polarity tshut_polarity; 95 }; 96 97 /* TSADC V2 Sensor info define: */ 98 #define TSADCV2_AUTO_CON 0x04 99 #define TSADCV2_INT_EN 0x08 100 #define TSADCV2_INT_PD 0x0c 101 #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04) 102 #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04) 103 #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60 104 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64 105 #define TSADCV2_AUTO_PERIOD 0x68 106 #define TSADCV2_AUTO_PERIOD_HT 0x6c 107 108 #define TSADCV2_AUTO_EN BIT(0) 109 #define TSADCV2_AUTO_DISABLE ~BIT(0) 110 #define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn)) 111 #define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8) 112 #define TSADCV2_AUTO_TSHUT_POLARITY_LOW ~BIT(8) 113 114 #define TSADCV2_INT_SRC_EN(chn) BIT(chn) 115 #define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn)) 116 #define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn)) 117 118 #define TSADCV2_INT_PD_CLEAR ~BIT(8) 119 120 #define TSADCV2_DATA_MASK 0xfff 121 #define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4 122 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4 123 #define TSADCV2_AUTO_PERIOD_TIME 250 /* msec */ 124 #define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* msec */ 125 126 struct tsadc_table { 127 unsigned long code; 128 long temp; 129 }; 130 131 static const struct tsadc_table v2_code_table[] = { 132 {TSADCV2_DATA_MASK, -40000}, 133 {3800, -40000}, 134 {3792, -35000}, 135 {3783, -30000}, 136 {3774, -25000}, 137 {3765, -20000}, 138 {3756, -15000}, 139 {3747, -10000}, 140 {3737, -5000}, 141 {3728, 0}, 142 {3718, 5000}, 143 {3708, 10000}, 144 {3698, 15000}, 145 {3688, 20000}, 146 {3678, 25000}, 147 {3667, 30000}, 148 {3656, 35000}, 149 {3645, 40000}, 150 {3634, 45000}, 151 {3623, 50000}, 152 {3611, 55000}, 153 {3600, 60000}, 154 {3588, 65000}, 155 {3575, 70000}, 156 {3563, 75000}, 157 {3550, 80000}, 158 {3537, 85000}, 159 {3524, 90000}, 160 {3510, 95000}, 161 {3496, 100000}, 162 {3482, 105000}, 163 {3467, 110000}, 164 {3452, 115000}, 165 {3437, 120000}, 166 {3421, 125000}, 167 {0, 125000}, 168 }; 169 170 static u32 rk_tsadcv2_temp_to_code(long temp) 171 { 172 int high, low, mid; 173 174 low = 0; 175 high = ARRAY_SIZE(v2_code_table) - 1; 176 mid = (high + low) / 2; 177 178 if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp) 179 return 0; 180 181 while (low <= high) { 182 if (temp == v2_code_table[mid].temp) 183 return v2_code_table[mid].code; 184 else if (temp < v2_code_table[mid].temp) 185 high = mid - 1; 186 else 187 low = mid + 1; 188 mid = (low + high) / 2; 189 } 190 191 return 0; 192 } 193 194 static long rk_tsadcv2_code_to_temp(u32 code) 195 { 196 int high, low, mid; 197 198 low = 0; 199 high = ARRAY_SIZE(v2_code_table) - 1; 200 mid = (high + low) / 2; 201 202 if (code > v2_code_table[low].code || code < v2_code_table[high].code) 203 return 125000; /* No code available, return max temperature */ 204 205 while (low <= high) { 206 if (code >= v2_code_table[mid].code && code < 207 v2_code_table[mid - 1].code) 208 return v2_code_table[mid].temp; 209 else if (code < v2_code_table[mid].code) 210 low = mid + 1; 211 else 212 high = mid - 1; 213 mid = (low + high) / 2; 214 } 215 216 return 125000; 217 } 218 219 /** 220 * rk_tsadcv2_initialize - initialize TASDC Controller 221 * (1) Set TSADCV2_AUTO_PERIOD, configure the interleave between 222 * every two accessing of TSADC in normal operation. 223 * (2) Set TSADCV2_AUTO_PERIOD_HT, configure the interleave between 224 * every two accessing of TSADC after the temperature is higher 225 * than COM_SHUT or COM_INT. 226 * (3) Set TSADCV2_HIGH_INT_DEBOUNCE and TSADC_HIGHT_TSHUT_DEBOUNCE, 227 * if the temperature is higher than COMP_INT or COMP_SHUT for 228 * "debounce" times, TSADC controller will generate interrupt or TSHUT. 229 */ 230 static void rk_tsadcv2_initialize(void __iomem *regs, 231 enum tshut_polarity tshut_polarity) 232 { 233 if (tshut_polarity == TSHUT_HIGH_ACTIVE) 234 writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_HIGH), 235 regs + TSADCV2_AUTO_CON); 236 else 237 writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_LOW), 238 regs + TSADCV2_AUTO_CON); 239 240 writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD); 241 writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT, 242 regs + TSADCV2_HIGHT_INT_DEBOUNCE); 243 writel_relaxed(TSADCV2_AUTO_PERIOD_HT_TIME, 244 regs + TSADCV2_AUTO_PERIOD_HT); 245 writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT, 246 regs + TSADCV2_HIGHT_TSHUT_DEBOUNCE); 247 } 248 249 static void rk_tsadcv2_irq_ack(void __iomem *regs) 250 { 251 u32 val; 252 253 val = readl_relaxed(regs + TSADCV2_INT_PD); 254 writel_relaxed(val & TSADCV2_INT_PD_CLEAR, regs + TSADCV2_INT_PD); 255 } 256 257 static void rk_tsadcv2_control(void __iomem *regs, bool enable) 258 { 259 u32 val; 260 261 val = readl_relaxed(regs + TSADCV2_AUTO_CON); 262 if (enable) 263 val |= TSADCV2_AUTO_EN; 264 else 265 val &= ~TSADCV2_AUTO_EN; 266 267 writel_relaxed(val, regs + TSADCV2_AUTO_CON); 268 } 269 270 static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, long *temp) 271 { 272 u32 val; 273 274 /* the A/D value of the channel last conversion need some time */ 275 val = readl_relaxed(regs + TSADCV2_DATA(chn)); 276 if (val == 0) 277 return -EAGAIN; 278 279 *temp = rk_tsadcv2_code_to_temp(val); 280 281 return 0; 282 } 283 284 static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp) 285 { 286 u32 tshut_value, val; 287 288 tshut_value = rk_tsadcv2_temp_to_code(temp); 289 writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn)); 290 291 /* TSHUT will be valid */ 292 val = readl_relaxed(regs + TSADCV2_AUTO_CON); 293 writel_relaxed(val | TSADCV2_AUTO_SRC_EN(chn), regs + TSADCV2_AUTO_CON); 294 } 295 296 static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs, 297 enum tshut_mode mode) 298 { 299 u32 val; 300 301 val = readl_relaxed(regs + TSADCV2_INT_EN); 302 if (mode == TSHUT_MODE_GPIO) { 303 val &= ~TSADCV2_SHUT_2CRU_SRC_EN(chn); 304 val |= TSADCV2_SHUT_2GPIO_SRC_EN(chn); 305 } else { 306 val &= ~TSADCV2_SHUT_2GPIO_SRC_EN(chn); 307 val |= TSADCV2_SHUT_2CRU_SRC_EN(chn); 308 } 309 310 writel_relaxed(val, regs + TSADCV2_INT_EN); 311 } 312 313 static const struct rockchip_tsadc_chip rk3288_tsadc_data = { 314 .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */ 315 .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */ 316 .tshut_temp = 95000, 317 318 .initialize = rk_tsadcv2_initialize, 319 .irq_ack = rk_tsadcv2_irq_ack, 320 .control = rk_tsadcv2_control, 321 .get_temp = rk_tsadcv2_get_temp, 322 .set_tshut_temp = rk_tsadcv2_tshut_temp, 323 .set_tshut_mode = rk_tsadcv2_tshut_mode, 324 }; 325 326 static const struct of_device_id of_rockchip_thermal_match[] = { 327 { 328 .compatible = "rockchip,rk3288-tsadc", 329 .data = (void *)&rk3288_tsadc_data, 330 }, 331 { /* end */ }, 332 }; 333 MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match); 334 335 static void 336 rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on) 337 { 338 struct thermal_zone_device *tzd = sensor->tzd; 339 340 tzd->ops->set_mode(tzd, 341 on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED); 342 } 343 344 static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) 345 { 346 struct rockchip_thermal_data *thermal = dev; 347 int i; 348 349 dev_dbg(&thermal->pdev->dev, "thermal alarm\n"); 350 351 thermal->chip->irq_ack(thermal->regs); 352 353 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) 354 thermal_zone_device_update(thermal->sensors[i].tzd); 355 356 return IRQ_HANDLED; 357 } 358 359 static int rockchip_thermal_get_temp(void *_sensor, long *out_temp) 360 { 361 struct rockchip_thermal_sensor *sensor = _sensor; 362 struct rockchip_thermal_data *thermal = sensor->thermal; 363 const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip; 364 int retval; 365 366 retval = tsadc->get_temp(sensor->id, thermal->regs, out_temp); 367 dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %ld, retval: %d\n", 368 sensor->id, *out_temp, retval); 369 370 return retval; 371 } 372 373 static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = { 374 .get_temp = rockchip_thermal_get_temp, 375 }; 376 377 static int rockchip_configure_from_dt(struct device *dev, 378 struct device_node *np, 379 struct rockchip_thermal_data *thermal) 380 { 381 u32 shut_temp, tshut_mode, tshut_polarity; 382 383 if (of_property_read_u32(np, "rockchip,hw-tshut-temp", &shut_temp)) { 384 dev_warn(dev, 385 "Missing tshut temp property, using default %ld\n", 386 thermal->chip->tshut_temp); 387 thermal->tshut_temp = thermal->chip->tshut_temp; 388 } else { 389 thermal->tshut_temp = shut_temp; 390 } 391 392 if (thermal->tshut_temp > INT_MAX) { 393 dev_err(dev, "Invalid tshut temperature specified: %ld\n", 394 thermal->tshut_temp); 395 return -ERANGE; 396 } 397 398 if (of_property_read_u32(np, "rockchip,hw-tshut-mode", &tshut_mode)) { 399 dev_warn(dev, 400 "Missing tshut mode property, using default (%s)\n", 401 thermal->chip->tshut_mode == TSHUT_MODE_GPIO ? 402 "gpio" : "cru"); 403 thermal->tshut_mode = thermal->chip->tshut_mode; 404 } else { 405 thermal->tshut_mode = tshut_mode; 406 } 407 408 if (thermal->tshut_mode > 1) { 409 dev_err(dev, "Invalid tshut mode specified: %d\n", 410 thermal->tshut_mode); 411 return -EINVAL; 412 } 413 414 if (of_property_read_u32(np, "rockchip,hw-tshut-polarity", 415 &tshut_polarity)) { 416 dev_warn(dev, 417 "Missing tshut-polarity property, using default (%s)\n", 418 thermal->chip->tshut_polarity == TSHUT_LOW_ACTIVE ? 419 "low" : "high"); 420 thermal->tshut_polarity = thermal->chip->tshut_polarity; 421 } else { 422 thermal->tshut_polarity = tshut_polarity; 423 } 424 425 if (thermal->tshut_polarity > 1) { 426 dev_err(dev, "Invalid tshut-polarity specified: %d\n", 427 thermal->tshut_polarity); 428 return -EINVAL; 429 } 430 431 return 0; 432 } 433 434 static int 435 rockchip_thermal_register_sensor(struct platform_device *pdev, 436 struct rockchip_thermal_data *thermal, 437 struct rockchip_thermal_sensor *sensor, 438 enum sensor_id id) 439 { 440 const struct rockchip_tsadc_chip *tsadc = thermal->chip; 441 int error; 442 443 tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode); 444 tsadc->set_tshut_temp(id, thermal->regs, thermal->tshut_temp); 445 446 sensor->thermal = thermal; 447 sensor->id = id; 448 sensor->tzd = thermal_zone_of_sensor_register(&pdev->dev, id, sensor, 449 &rockchip_of_thermal_ops); 450 if (IS_ERR(sensor->tzd)) { 451 error = PTR_ERR(sensor->tzd); 452 dev_err(&pdev->dev, "failed to register sensor %d: %d\n", 453 id, error); 454 return error; 455 } 456 457 return 0; 458 } 459 460 /* 461 * Reset TSADC Controller, reset all tsadc registers. 462 */ 463 static void rockchip_thermal_reset_controller(struct reset_control *reset) 464 { 465 reset_control_assert(reset); 466 usleep_range(10, 20); 467 reset_control_deassert(reset); 468 } 469 470 static int rockchip_thermal_probe(struct platform_device *pdev) 471 { 472 struct device_node *np = pdev->dev.of_node; 473 struct rockchip_thermal_data *thermal; 474 const struct of_device_id *match; 475 struct resource *res; 476 int irq; 477 int i; 478 int error; 479 480 match = of_match_node(of_rockchip_thermal_match, np); 481 if (!match) 482 return -ENXIO; 483 484 irq = platform_get_irq(pdev, 0); 485 if (irq < 0) { 486 dev_err(&pdev->dev, "no irq resource?\n"); 487 return -EINVAL; 488 } 489 490 thermal = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_thermal_data), 491 GFP_KERNEL); 492 if (!thermal) 493 return -ENOMEM; 494 495 thermal->pdev = pdev; 496 497 thermal->chip = (const struct rockchip_tsadc_chip *)match->data; 498 if (!thermal->chip) 499 return -EINVAL; 500 501 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 502 thermal->regs = devm_ioremap_resource(&pdev->dev, res); 503 if (IS_ERR(thermal->regs)) 504 return PTR_ERR(thermal->regs); 505 506 thermal->reset = devm_reset_control_get(&pdev->dev, "tsadc-apb"); 507 if (IS_ERR(thermal->reset)) { 508 error = PTR_ERR(thermal->reset); 509 dev_err(&pdev->dev, "failed to get tsadc reset: %d\n", error); 510 return error; 511 } 512 513 thermal->clk = devm_clk_get(&pdev->dev, "tsadc"); 514 if (IS_ERR(thermal->clk)) { 515 error = PTR_ERR(thermal->clk); 516 dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error); 517 return error; 518 } 519 520 thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk"); 521 if (IS_ERR(thermal->pclk)) { 522 error = PTR_ERR(thermal->clk); 523 dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n", 524 error); 525 return error; 526 } 527 528 error = clk_prepare_enable(thermal->clk); 529 if (error) { 530 dev_err(&pdev->dev, "failed to enable converter clock: %d\n", 531 error); 532 return error; 533 } 534 535 error = clk_prepare_enable(thermal->pclk); 536 if (error) { 537 dev_err(&pdev->dev, "failed to enable pclk: %d\n", error); 538 goto err_disable_clk; 539 } 540 541 rockchip_thermal_reset_controller(thermal->reset); 542 543 error = rockchip_configure_from_dt(&pdev->dev, np, thermal); 544 if (error) { 545 dev_err(&pdev->dev, "failed to parse device tree data: %d\n", 546 error); 547 goto err_disable_pclk; 548 } 549 550 thermal->chip->initialize(thermal->regs, thermal->tshut_polarity); 551 552 error = rockchip_thermal_register_sensor(pdev, thermal, 553 &thermal->sensors[0], 554 SENSOR_CPU); 555 if (error) { 556 dev_err(&pdev->dev, 557 "failed to register CPU thermal sensor: %d\n", error); 558 goto err_disable_pclk; 559 } 560 561 error = rockchip_thermal_register_sensor(pdev, thermal, 562 &thermal->sensors[1], 563 SENSOR_GPU); 564 if (error) { 565 dev_err(&pdev->dev, 566 "failed to register GPU thermal sensor: %d\n", error); 567 goto err_unregister_cpu_sensor; 568 } 569 570 error = devm_request_threaded_irq(&pdev->dev, irq, NULL, 571 &rockchip_thermal_alarm_irq_thread, 572 IRQF_ONESHOT, 573 "rockchip_thermal", thermal); 574 if (error) { 575 dev_err(&pdev->dev, 576 "failed to request tsadc irq: %d\n", error); 577 goto err_unregister_gpu_sensor; 578 } 579 580 thermal->chip->control(thermal->regs, true); 581 582 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) 583 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); 584 585 platform_set_drvdata(pdev, thermal); 586 587 return 0; 588 589 err_unregister_gpu_sensor: 590 thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[1].tzd); 591 err_unregister_cpu_sensor: 592 thermal_zone_of_sensor_unregister(&pdev->dev, thermal->sensors[0].tzd); 593 err_disable_pclk: 594 clk_disable_unprepare(thermal->pclk); 595 err_disable_clk: 596 clk_disable_unprepare(thermal->clk); 597 598 return error; 599 } 600 601 static int rockchip_thermal_remove(struct platform_device *pdev) 602 { 603 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); 604 int i; 605 606 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) { 607 struct rockchip_thermal_sensor *sensor = &thermal->sensors[i]; 608 609 rockchip_thermal_toggle_sensor(sensor, false); 610 thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd); 611 } 612 613 thermal->chip->control(thermal->regs, false); 614 615 clk_disable_unprepare(thermal->pclk); 616 clk_disable_unprepare(thermal->clk); 617 618 return 0; 619 } 620 621 static int __maybe_unused rockchip_thermal_suspend(struct device *dev) 622 { 623 struct platform_device *pdev = to_platform_device(dev); 624 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); 625 int i; 626 627 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) 628 rockchip_thermal_toggle_sensor(&thermal->sensors[i], false); 629 630 thermal->chip->control(thermal->regs, false); 631 632 clk_disable(thermal->pclk); 633 clk_disable(thermal->clk); 634 635 return 0; 636 } 637 638 static int __maybe_unused rockchip_thermal_resume(struct device *dev) 639 { 640 struct platform_device *pdev = to_platform_device(dev); 641 struct rockchip_thermal_data *thermal = platform_get_drvdata(pdev); 642 int i; 643 int error; 644 645 error = clk_enable(thermal->clk); 646 if (error) 647 return error; 648 649 error = clk_enable(thermal->pclk); 650 if (error) 651 return error; 652 653 rockchip_thermal_reset_controller(thermal->reset); 654 655 thermal->chip->initialize(thermal->regs, thermal->tshut_polarity); 656 657 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) { 658 enum sensor_id id = thermal->sensors[i].id; 659 660 thermal->chip->set_tshut_mode(id, thermal->regs, 661 thermal->tshut_mode); 662 thermal->chip->set_tshut_temp(id, thermal->regs, 663 thermal->tshut_temp); 664 } 665 666 thermal->chip->control(thermal->regs, true); 667 668 for (i = 0; i < ARRAY_SIZE(thermal->sensors); i++) 669 rockchip_thermal_toggle_sensor(&thermal->sensors[i], true); 670 671 return 0; 672 } 673 674 static SIMPLE_DEV_PM_OPS(rockchip_thermal_pm_ops, 675 rockchip_thermal_suspend, rockchip_thermal_resume); 676 677 static struct platform_driver rockchip_thermal_driver = { 678 .driver = { 679 .name = "rockchip-thermal", 680 .pm = &rockchip_thermal_pm_ops, 681 .of_match_table = of_rockchip_thermal_match, 682 }, 683 .probe = rockchip_thermal_probe, 684 .remove = rockchip_thermal_remove, 685 }; 686 687 module_platform_driver(rockchip_thermal_driver); 688 689 MODULE_DESCRIPTION("ROCKCHIP THERMAL Driver"); 690 MODULE_AUTHOR("Rockchip, Inc."); 691 MODULE_LICENSE("GPL v2"); 692 MODULE_ALIAS("platform:rockchip-thermal"); 693