target/linux/ipq806x/patches-4.14/0063-1-ipq806x-tsens-driver.patch

   1 From 3302e1e1a3cfa4e67fda2a61d6f0c42205d40932 Mon Sep 17 00:00:00 2001
   2 From: Rajith Cherian <rajith@codeaurora.org>
   3 Date: Tue, 14 Feb 2017 18:30:43 +0530
   4 Subject: [PATCH] ipq8064: tsens: Base tsens driver for IPQ8064
   5
   6 Add TSENS driver template to support IPQ8064.
   7 This is a base file copied from tsens-8960.c
   8
   9 Change-Id: I47c573fdfa2d898243c6a6ba952d1632f91391f7
  10 Signed-off-by: Rajith Cherian <rajith@codeaurora.org>
  11
  12 ipq8064: tsens: TSENS driver support for IPQ8064
  13
  14 Support for IPQ8064 tsens driver. The driver works
  15 with the thermal framework. The driver overrides the
  16 following fucntionalities:
  17
  18 1. Get current temperature.
  19 2. Get/Set trip temperatures.
  20 3. Enabled/Disable trip points.
  21 4. ISR for threshold generated interrupt.
  22 5. Notify userspace when trip points are hit.
  23
  24 Change-Id: I8bc7204fd627d10875ab13fc1de8cb6c2ed7a918
  25 Signed-off-by: Rajith Cherian <rajith@codeaurora.org>
  26 ---
  27  .../devicetree/bindings/thermal/qcom-tsens.txt     |   1 +
  28  drivers/thermal/qcom/Makefile                      |   3 +-
  29  drivers/thermal/qcom/tsens-ipq8064.c               | 551 +++++++++++++++++++++
  30  drivers/thermal/qcom/tsens.c                       |   3 +
  31  drivers/thermal/qcom/tsens.h                       |   2 +-
  32  5 files changed, 558 insertions(+), 2 deletions(-)
  33  create mode 100644 drivers/thermal/qcom/tsens-ipq8064.c
  34
  35 --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
  36 +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
  37 @@ -5,6 +5,7 @@ Required properties:
  38   - "qcom,msm8916-tsens" : For 8916 Family of SoCs
  39   - "qcom,msm8974-tsens" : For 8974 Family of SoCs
  40   - "qcom,msm8996-tsens" : For 8996 Family of SoCs
  41 + - "qcom,ipq8064-tsens" : For IPQ8064
  42
  43  - reg: Address range of the thermal registers
  44  - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
  45 --- a/drivers/thermal/qcom/Makefile
  46 +++ b/drivers/thermal/qcom/Makefile
  47 @@ -1,2 +1,3 @@
  48  obj-$(CONFIG_QCOM_TSENS)       += qcom_tsens.o
  49 -qcom_tsens-y                   += tsens.o tsens-common.o tsens-8916.o tsens-8974.o tsens-8960.o tsens-8996.o
  50 +qcom_tsens-y                   += tsens.o tsens-common.o tsens-8916.o tsens-8974.o tsens-8960.o tsens-8996.o \
  51 +                               tsens-ipq8064.o
  52 --- /dev/null
  53 +++ b/drivers/thermal/qcom/tsens-ipq8064.c
  54 @@ -0,0 +1,551 @@
  55 +/*
  56 + * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  57 + *
  58 + * This program is free software; you can redistribute it and/or modify
  59 + * it under the terms of the GNU General Public License version 2 and
  60 + * only version 2 as published by the Free Software Foundation.
  61 + *
  62 + * This program is distributed in the hope that it will be useful,
  63 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
  64 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  65 + * GNU General Public License for more details.
  66 + *
  67 + */
  68 +
  69 +#include <linux/platform_device.h>
  70 +#include <linux/delay.h>
  71 +#include <linux/bitops.h>
  72 +#include <linux/regmap.h>
  73 +#include <linux/thermal.h>
  74 +#include <linux/nvmem-consumer.h>
  75 +#include <linux/io.h>
  76 +#include <linux/interrupt.h>
  77 +#include "tsens.h"
  78 +
  79 +#define CAL_MDEGC              30000
  80 +
  81 +#define CONFIG_ADDR            0x3640
  82 +/* CONFIG_ADDR bitmasks */
  83 +#define CONFIG                 0x9b
  84 +#define CONFIG_MASK            0xf
  85 +#define CONFIG_SHIFT           0
  86 +
  87 +#define STATUS_CNTL_8064       0x3660
  88 +#define CNTL_ADDR              0x3620
  89 +/* CNTL_ADDR bitmasks */
  90 +#define EN                     BIT(0)
  91 +#define SW_RST                 BIT(1)
  92 +#define SENSOR0_EN             BIT(3)
  93 +#define SLP_CLK_ENA            BIT(26)
  94 +#define MEASURE_PERIOD         1
  95 +#define SENSOR0_SHIFT          3
  96 +
  97 +/* INT_STATUS_ADDR bitmasks */
  98 +#define MIN_STATUS_MASK                BIT(0)
  99 +#define LOWER_STATUS_CLR       BIT(1)
 100 +#define UPPER_STATUS_CLR       BIT(2)
 101 +#define MAX_STATUS_MASK                BIT(3)
 102 +
 103 +#define THRESHOLD_ADDR         0x3624
 104 +/* THRESHOLD_ADDR bitmasks */
 105 +#define THRESHOLD_MAX_CODE             0x20000
 106 +#define THRESHOLD_MIN_CODE             0
 107 +#define THRESHOLD_MAX_LIMIT_SHIFT      24
 108 +#define THRESHOLD_MIN_LIMIT_SHIFT      16
 109 +#define THRESHOLD_UPPER_LIMIT_SHIFT    8
 110 +#define THRESHOLD_LOWER_LIMIT_SHIFT    0
 111 +#define THRESHOLD_MAX_LIMIT_MASK       (THRESHOLD_MAX_CODE << \
 112 +                                               THRESHOLD_MAX_LIMIT_SHIFT)
 113 +#define THRESHOLD_MIN_LIMIT_MASK       (THRESHOLD_MAX_CODE << \
 114 +                                               THRESHOLD_MIN_LIMIT_SHIFT)
 115 +#define THRESHOLD_UPPER_LIMIT_MASK     (THRESHOLD_MAX_CODE << \
 116 +                                               THRESHOLD_UPPER_LIMIT_SHIFT)
 117 +#define THRESHOLD_LOWER_LIMIT_MASK     (THRESHOLD_MAX_CODE << \
 118 +                                               THRESHOLD_LOWER_LIMIT_SHIFT)
 119 +
 120 +/* Initial temperature threshold values */
 121 +#define LOWER_LIMIT_TH         0x9d /* 95C */
 122 +#define UPPER_LIMIT_TH         0xa6 /* 105C */
 123 +#define MIN_LIMIT_TH           0x0
 124 +#define MAX_LIMIT_TH           0xff
 125 +
 126 +#define S0_STATUS_ADDR         0x3628
 127 +#define STATUS_ADDR_OFFSET     2
 128 +#define SENSOR_STATUS_SIZE     4
 129 +#define INT_STATUS_ADDR                0x363c
 130 +#define TRDY_MASK              BIT(7)
 131 +#define TIMEOUT_US             100
 132 +
 133 +#define TSENS_EN               BIT(0)
 134 +#define TSENS_SW_RST           BIT(1)
 135 +#define TSENS_ADC_CLK_SEL      BIT(2)
 136 +#define SENSOR0_EN             BIT(3)
 137 +#define SENSOR1_EN             BIT(4)
 138 +#define SENSOR2_EN             BIT(5)
 139 +#define SENSOR3_EN             BIT(6)
 140 +#define SENSOR4_EN             BIT(7)
 141 +#define SENSORS_EN             (SENSOR0_EN | SENSOR1_EN | \
 142 +                               SENSOR2_EN | SENSOR3_EN | SENSOR4_EN)
 143 +#define TSENS_8064_SENSOR5_EN                          BIT(8)
 144 +#define TSENS_8064_SENSOR6_EN                          BIT(9)
 145 +#define TSENS_8064_SENSOR7_EN                          BIT(10)
 146 +#define TSENS_8064_SENSOR8_EN                          BIT(11)
 147 +#define TSENS_8064_SENSOR9_EN                          BIT(12)
 148 +#define TSENS_8064_SENSOR10_EN                         BIT(13)
 149 +#define TSENS_8064_SENSORS_EN                          (SENSORS_EN | \
 150 +                                               TSENS_8064_SENSOR5_EN | \
 151 +                                               TSENS_8064_SENSOR6_EN | \
 152 +                                               TSENS_8064_SENSOR7_EN | \
 153 +                                               TSENS_8064_SENSOR8_EN | \
 154 +                                               TSENS_8064_SENSOR9_EN | \
 155 +                                               TSENS_8064_SENSOR10_EN)
 156 +
 157 +#define TSENS_8064_SEQ_SENSORS 5
 158 +#define TSENS_8064_S4_S5_OFFSET        40
 159 +#define TSENS_FACTOR           1
 160 +
 161 +/* Trips: from very hot to very cold */
 162 +enum tsens_trip_type {
 163 +       TSENS_TRIP_STAGE3 = 0,
 164 +       TSENS_TRIP_STAGE2,
 165 +       TSENS_TRIP_STAGE1,
 166 +       TSENS_TRIP_STAGE0,
 167 +       TSENS_TRIP_NUM,
 168 +};
 169 +
 170 +u32 tsens_8064_slope[] = {
 171 +                       1176, 1176, 1154, 1176,
 172 +                       1111, 1132, 1132, 1199,
 173 +                       1132, 1199, 1132
 174 +                       };
 175 +
 176 +/* Temperature on y axis and ADC-code on x-axis */
 177 +static inline int code_to_degC(u32 adc_code, const struct tsens_sensor *s)
 178 +{
 179 +       int degcbeforefactor, degc;
 180 +
 181 +       degcbeforefactor = (adc_code * s->slope) + s->offset;
 182 +
 183 +       if (degcbeforefactor == 0)
 184 +               degc = degcbeforefactor;
 185 +       else if (degcbeforefactor > 0)
 186 +               degc = (degcbeforefactor + TSENS_FACTOR/2)
 187 +                       / TSENS_FACTOR;
 188 +       else
 189 +               degc = (degcbeforefactor - TSENS_FACTOR/2)
 190 +                       / TSENS_FACTOR;
 191 +
 192 +       return degc;
 193 +}
 194 +
 195 +static int degC_to_code(int degC, const struct tsens_sensor *s)
 196 +{
 197 +       int code = ((degC * TSENS_FACTOR - s->offset) + (s->slope/2))
 198 +                       / s->slope;
 199 +
 200 +       if (code > THRESHOLD_MAX_CODE)
 201 +               code = THRESHOLD_MAX_CODE;
 202 +       else if (code < THRESHOLD_MIN_CODE)
 203 +               code = THRESHOLD_MIN_CODE;
 204 +       return code;
 205 +}
 206 +
 207 +static int suspend_ipq8064(struct tsens_device *tmdev)
 208 +{
 209 +       int ret;
 210 +       unsigned int mask;
 211 +       struct regmap *map = tmdev->map;
 212 +
 213 +       ret = regmap_read(map, THRESHOLD_ADDR, &tmdev->ctx.threshold);
 214 +       if (ret)
 215 +               return ret;
 216 +
 217 +       ret = regmap_read(map, CNTL_ADDR, &tmdev->ctx.control);
 218 +       if (ret)
 219 +               return ret;
 220 +
 221 +       mask = SLP_CLK_ENA | EN;
 222 +
 223 +       ret = regmap_update_bits(map, CNTL_ADDR, mask, 0);
 224 +       if (ret)
 225 +               return ret;
 226 +
 227 +       return 0;
 228 +}
 229 +
 230 +static int resume_ipq8064(struct tsens_device *tmdev)
 231 +{
 232 +       int ret;
 233 +       struct regmap *map = tmdev->map;
 234 +
 235 +       ret = regmap_update_bits(map, CNTL_ADDR, SW_RST, SW_RST);
 236 +       if (ret)
 237 +               return ret;
 238 +
 239 +       ret = regmap_update_bits(map, CONFIG_ADDR, CONFIG_MASK, CONFIG);
 240 +       if (ret)
 241 +               return ret;
 242 +
 243 +       ret = regmap_write(map, THRESHOLD_ADDR, tmdev->ctx.threshold);
 244 +       if (ret)
 245 +               return ret;
 246 +
 247 +       ret = regmap_write(map, CNTL_ADDR, tmdev->ctx.control);
 248 +       if (ret)
 249 +               return ret;
 250 +
 251 +       return 0;
 252 +}
 253 +
 254 +static void notify_uspace_tsens_fn(struct work_struct *work)
 255 +{
 256 +       struct tsens_sensor *s = container_of(work, struct tsens_sensor,
 257 +                                                               notify_work);
 258 +
 259 +       sysfs_notify(&s->tzd->device.kobj, NULL, "type");
 260 +}
 261 +
 262 +static void tsens_scheduler_fn(struct work_struct *work)
 263 +{
 264 +       struct tsens_device *tmdev = container_of(work, struct tsens_device,
 265 +                                       tsens_work);
 266 +       unsigned int threshold, threshold_low, code, reg, sensor, mask;
 267 +       unsigned int sensor_addr;
 268 +       bool upper_th_x, lower_th_x;
 269 +       int adc_code, ret;
 270 +
 271 +       ret = regmap_read(tmdev->map, STATUS_CNTL_8064, &reg);
 272 +       if (ret)
 273 +               return;
 274 +       reg = reg | LOWER_STATUS_CLR | UPPER_STATUS_CLR;
 275 +       ret = regmap_write(tmdev->map, STATUS_CNTL_8064, reg);
 276 +       if (ret)
 277 +               return;
 278 +
 279 +       mask = ~(LOWER_STATUS_CLR | UPPER_STATUS_CLR);
 280 +       ret = regmap_read(tmdev->map, THRESHOLD_ADDR, &threshold);
 281 +       if (ret)
 282 +               return;
 283 +       threshold_low = (threshold & THRESHOLD_LOWER_LIMIT_MASK)
 284 +                               >> THRESHOLD_LOWER_LIMIT_SHIFT;
 285 +       threshold = (threshold & THRESHOLD_UPPER_LIMIT_MASK)
 286 +                               >> THRESHOLD_UPPER_LIMIT_SHIFT;
 287 +
 288 +       ret = regmap_read(tmdev->map, STATUS_CNTL_8064, &reg);
 289 +       if (ret)
 290 +               return;
 291 +
 292 +       ret = regmap_read(tmdev->map, CNTL_ADDR, &sensor);
 293 +       if (ret)
 294 +               return;
 295 +       sensor &= (uint32_t) TSENS_8064_SENSORS_EN;
 296 +       sensor >>= SENSOR0_SHIFT;
 297 +
 298 +       /* Constraint: There is only 1 interrupt control register for all
 299 +        * 11 temperature sensor. So monitoring more than 1 sensor based
 300 +        * on interrupts will yield inconsistent result. To overcome this
 301 +        * issue we will monitor only sensor 0 which is the master sensor.
 302 +        */
 303 +
 304 +       /* Skip if the sensor is disabled */
 305 +       if (sensor & 1) {
 306 +               ret = regmap_read(tmdev->map, tmdev->sensor[0].status, &code);
 307 +               if (ret)
 308 +                       return;
 309 +               upper_th_x = code >= threshold;
 310 +               lower_th_x = code <= threshold_low;
 311 +               if (upper_th_x)
 312 +                       mask |= UPPER_STATUS_CLR;
 313 +               if (lower_th_x)
 314 +                       mask |= LOWER_STATUS_CLR;
 315 +               if (upper_th_x || lower_th_x) {
 316 +                       /* Notify user space */
 317 +                       schedule_work(&tmdev->sensor[0].notify_work);
 318 +                       regmap_read(tmdev->map, sensor_addr, &adc_code);
 319 +                       pr_debug("Trigger (%d degrees) for sensor %d\n",
 320 +                               code_to_degC(adc_code, &tmdev->sensor[0]), 0);
 321 +               }
 322 +       }
 323 +       regmap_write(tmdev->map, STATUS_CNTL_8064, reg & mask);
 324 +
 325 +       /* force memory to sync */
 326 +       mb();
 327 +}
 328 +
 329 +static irqreturn_t tsens_isr(int irq, void *data)
 330 +{
 331 +       struct tsens_device *tmdev = data;
 332 +
 333 +       schedule_work(&tmdev->tsens_work);
 334 +       return IRQ_HANDLED;
 335 +}
 336 +
 337 +static void hw_init(struct tsens_device *tmdev)
 338 +{
 339 +       int ret;
 340 +       unsigned int reg_cntl = 0, reg_cfg = 0, reg_thr = 0;
 341 +       unsigned int reg_status_cntl = 0;
 342 +
 343 +       regmap_read(tmdev->map, CNTL_ADDR, &reg_cntl);
 344 +       regmap_write(tmdev->map, CNTL_ADDR, reg_cntl | TSENS_SW_RST);
 345 +
 346 +       reg_cntl |= SLP_CLK_ENA | (MEASURE_PERIOD << 18)
 347 +               | (((1 << tmdev->num_sensors) - 1) << SENSOR0_SHIFT);
 348 +       regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
 349 +       regmap_read(tmdev->map, STATUS_CNTL_8064, &reg_status_cntl);
 350 +       reg_status_cntl |= LOWER_STATUS_CLR | UPPER_STATUS_CLR
 351 +                       | MIN_STATUS_MASK | MAX_STATUS_MASK;
 352 +       regmap_write(tmdev->map, STATUS_CNTL_8064, reg_status_cntl);
 353 +       reg_cntl |= TSENS_EN;
 354 +       regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
 355 +
 356 +       regmap_read(tmdev->map, CONFIG_ADDR, &reg_cfg);
 357 +       reg_cfg = (reg_cfg & ~CONFIG_MASK) | (CONFIG << CONFIG_SHIFT);
 358 +       regmap_write(tmdev->map, CONFIG_ADDR, reg_cfg);
 359 +
 360 +       reg_thr |= (LOWER_LIMIT_TH << THRESHOLD_LOWER_LIMIT_SHIFT)
 361 +               | (UPPER_LIMIT_TH << THRESHOLD_UPPER_LIMIT_SHIFT)
 362 +               | (MIN_LIMIT_TH << THRESHOLD_MIN_LIMIT_SHIFT)
 363 +               | (MAX_LIMIT_TH << THRESHOLD_MAX_LIMIT_SHIFT);
 364 +
 365 +       regmap_write(tmdev->map, THRESHOLD_ADDR, reg_thr);
 366 +
 367 +       ret = devm_request_irq(tmdev->dev, tmdev->tsens_irq, tsens_isr,
 368 +                       IRQF_TRIGGER_RISING, "tsens_interrupt", tmdev);
 369 +       if (ret < 0) {
 370 +               pr_err("%s: request_irq FAIL: %d\n", __func__, ret);
 371 +               return;
 372 +       }
 373 +
 374 +       INIT_WORK(&tmdev->tsens_work, tsens_scheduler_fn);
 375 +}
 376 +
 377 +static int init_ipq8064(struct tsens_device *tmdev)
 378 +{
 379 +       int ret, i;
 380 +       u32 reg_cntl, offset = 0;
 381 +
 382 +       init_common(tmdev);
 383 +       if (!tmdev->map)
 384 +               return -ENODEV;
 385 +
 386 +       /*
 387 +        * The status registers for each sensor are discontiguous
 388 +        * because some SoCs have 5 sensors while others have more
 389 +        * but the control registers stay in the same place, i.e
 390 +        * directly after the first 5 status registers.
 391 +        */
 392 +       for (i = 0; i < tmdev->num_sensors; i++) {
 393 +               if (i >= TSENS_8064_SEQ_SENSORS)
 394 +                       offset = TSENS_8064_S4_S5_OFFSET;
 395 +
 396 +               tmdev->sensor[i].status = S0_STATUS_ADDR + offset
 397 +                                       + (i << STATUS_ADDR_OFFSET);
 398 +               tmdev->sensor[i].slope = tsens_8064_slope[i];
 399 +               INIT_WORK(&tmdev->sensor[i].notify_work,
 400 +                                               notify_uspace_tsens_fn);
 401 +       }
 402 +
 403 +       reg_cntl = SW_RST;
 404 +       ret = regmap_update_bits(tmdev->map, CNTL_ADDR, SW_RST, reg_cntl);
 405 +       if (ret)
 406 +               return ret;
 407 +
 408 +       reg_cntl |= SLP_CLK_ENA | (MEASURE_PERIOD << 18);
 409 +       reg_cntl &= ~SW_RST;
 410 +       ret = regmap_update_bits(tmdev->map, CONFIG_ADDR,
 411 +                                        CONFIG_MASK, CONFIG);
 412 +
 413 +       reg_cntl |= GENMASK(tmdev->num_sensors - 1, 0) << SENSOR0_SHIFT;
 414 +       ret = regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
 415 +       if (ret)
 416 +               return ret;
 417 +
 418 +       reg_cntl |= EN;
 419 +       ret = regmap_write(tmdev->map, CNTL_ADDR, reg_cntl);
 420 +       if (ret)
 421 +               return ret;
 422 +
 423 +       return 0;
 424 +}
 425 +
 426 +static int calibrate_ipq8064(struct tsens_device *tmdev)
 427 +{
 428 +       int i;
 429 +       char *data, *data_backup;
 430 +
 431 +       ssize_t num_read = tmdev->num_sensors;
 432 +       struct tsens_sensor *s = tmdev->sensor;
 433 +
 434 +       data = qfprom_read(tmdev->dev, "calib");
 435 +       if (IS_ERR(data)) {
 436 +               pr_err("Calibration not found.\n");
 437 +               return PTR_ERR(data);
 438 +       }
 439 +
 440 +       data_backup = qfprom_read(tmdev->dev, "calib_backup");
 441 +       if (IS_ERR(data_backup)) {
 442 +               pr_err("Backup calibration not found.\n");
 443 +               return PTR_ERR(data_backup);
 444 +       }
 445 +
 446 +       for (i = 0; i < num_read; i++) {
 447 +               s[i].calib_data = readb_relaxed(data + i);
 448 +               s[i].calib_data_backup = readb_relaxed(data_backup + i);
 449 +
 450 +               if (s[i].calib_data_backup)
 451 +                       s[i].calib_data = s[i].calib_data_backup;
 452 +               if (!s[i].calib_data) {
 453 +                       pr_err("QFPROM TSENS calibration data not present\n");
 454 +                       return -ENODEV;
 455 +               }
 456 +               s[i].slope = tsens_8064_slope[i];
 457 +               s[i].offset = CAL_MDEGC - (s[i].calib_data * s[i].slope);
 458 +       }
 459 +
 460 +       hw_init(tmdev);
 461 +
 462 +       return 0;
 463 +}
 464 +
 465 +static int get_temp_ipq8064(struct tsens_device *tmdev, int id, int *temp)
 466 +{
 467 +       int ret;
 468 +       u32 code, trdy;
 469 +       const struct tsens_sensor *s = &tmdev->sensor[id];
 470 +       unsigned long timeout;
 471 +
 472 +       timeout = jiffies + usecs_to_jiffies(TIMEOUT_US);
 473 +       do {
 474 +               ret = regmap_read(tmdev->map, INT_STATUS_ADDR, &trdy);
 475 +               if (ret)
 476 +                       return ret;
 477 +               if (!(trdy & TRDY_MASK))
 478 +                       continue;
 479 +               ret = regmap_read(tmdev->map, s->status, &code);
 480 +               if (ret)
 481 +                       return ret;
 482 +               *temp = code_to_degC(code, s);
 483 +               return 0;
 484 +       } while (time_before(jiffies, timeout));
 485 +
 486 +       return -ETIMEDOUT;
 487 +}
 488 +
 489 +static int set_trip_temp_ipq8064(void *data, int trip, int temp)
 490 +{
 491 +       unsigned int reg_th, reg_cntl;
 492 +       int ret, code, code_chk, hi_code, lo_code;
 493 +       const struct tsens_sensor *s = data;
 494 +       struct tsens_device *tmdev = s->tmdev;
 495 +
 496 +       code_chk = code = degC_to_code(temp, s);
 497 +
 498 +       if (code < THRESHOLD_MIN_CODE || code > THRESHOLD_MAX_CODE)
 499 +               return -EINVAL;
 500 +
 501 +       ret = regmap_read(tmdev->map, STATUS_CNTL_8064, &reg_cntl);
 502 +       if (ret)
 503 +               return ret;
 504 +
 505 +       ret = regmap_read(tmdev->map, THRESHOLD_ADDR, &reg_th);
 506 +       if (ret)
 507 +               return ret;
 508 +
 509 +       hi_code = (reg_th & THRESHOLD_UPPER_LIMIT_MASK)
 510 +                       >> THRESHOLD_UPPER_LIMIT_SHIFT;
 511 +       lo_code = (reg_th & THRESHOLD_LOWER_LIMIT_MASK)
 512 +                       >> THRESHOLD_LOWER_LIMIT_SHIFT;
 513 +
 514 +       switch (trip) {
 515 +       case TSENS_TRIP_STAGE3:
 516 +               code <<= THRESHOLD_MAX_LIMIT_SHIFT;
 517 +               reg_th &= ~THRESHOLD_MAX_LIMIT_MASK;
 518 +               break;
 519 +       case TSENS_TRIP_STAGE2:
 520 +               if (code_chk <= lo_code)
 521 +                       return -EINVAL;
 522 +               code <<= THRESHOLD_UPPER_LIMIT_SHIFT;
 523 +               reg_th &= ~THRESHOLD_UPPER_LIMIT_MASK;
 524 +               break;
 525 +       case TSENS_TRIP_STAGE1:
 526 +               if (code_chk >= hi_code)
 527 +                       return -EINVAL;
 528 +               code <<= THRESHOLD_LOWER_LIMIT_SHIFT;
 529 +               reg_th &= ~THRESHOLD_LOWER_LIMIT_MASK;
 530 +               break;
 531 +       case TSENS_TRIP_STAGE0:
 532 +               code <<= THRESHOLD_MIN_LIMIT_SHIFT;
 533 +               reg_th &= ~THRESHOLD_MIN_LIMIT_MASK;
 534 +               break;
 535 +       default:
 536 +               return -EINVAL;
 537 +       }
 538 +
 539 +       ret = regmap_write(tmdev->map, THRESHOLD_ADDR, reg_th | code);
 540 +       if (ret)
 541 +               return ret;
 542 +
 543 +       return 0;
 544 +}
 545 +
 546 +static int set_trip_activate_ipq8064(void *data, int trip,
 547 +                                       enum thermal_trip_activation_mode mode)
 548 +{
 549 +       unsigned int reg_cntl, mask, val;
 550 +       const struct tsens_sensor *s = data;
 551 +       struct tsens_device *tmdev = s->tmdev;
 552 +       int ret;
 553 +
 554 +       if (!tmdev || trip < 0)
 555 +               return -EINVAL;
 556 +
 557 +       ret = regmap_read(tmdev->map, STATUS_CNTL_8064, &reg_cntl);
 558 +       if (ret)
 559 +               return ret;
 560 +
 561 +       switch (trip) {
 562 +       case TSENS_TRIP_STAGE3:
 563 +               mask = MAX_STATUS_MASK;
 564 +               break;
 565 +       case TSENS_TRIP_STAGE2:
 566 +               mask = UPPER_STATUS_CLR;
 567 +               break;
 568 +       case TSENS_TRIP_STAGE1:
 569 +               mask = LOWER_STATUS_CLR;
 570 +               break;
 571 +       case TSENS_TRIP_STAGE0:
 572 +               mask = MIN_STATUS_MASK;
 573 +               break;
 574 +       default:
 575 +               return -EINVAL;
 576 +       }
 577 +
 578 +       if (mode == THERMAL_TRIP_ACTIVATION_DISABLED)
 579 +               val = reg_cntl | mask;
 580 +       else
 581 +               val = reg_cntl & ~mask;
 582 +
 583 +       ret = regmap_write(tmdev->map, STATUS_CNTL_8064, val);
 584 +       if (ret)
 585 +               return ret;
 586 +
 587 +       /* force memory to sync */
 588 +       mb();
 589 +       return 0;
 590 +}
 591 +
 592 +const struct tsens_ops ops_ipq8064 = {
 593 +       .init           = init_ipq8064,
 594 +       .calibrate      = calibrate_ipq8064,
 595 +       .get_temp       = get_temp_ipq8064,
 596 +       .suspend        = suspend_ipq8064,
 597 +       .resume         = resume_ipq8064,
 598 +       .set_trip_temp  = set_trip_temp_ipq8064,
 599 +       .set_trip_activate = set_trip_activate_ipq8064,
 600 +};
 601 +
 602 +const struct tsens_data data_ipq8064 = {
 603 +       .num_sensors    = 11,
 604 +       .ops            = &ops_ipq8064,
 605 +};
 606 --- a/drivers/thermal/qcom/tsens.c
 607 +++ b/drivers/thermal/qcom/tsens.c
 608 @@ -72,6 +72,9 @@ static const struct of_device_id tsens_t
 609         }, {
 610                 .compatible = "qcom,msm8996-tsens",
 611                 .data = &data_8996,
 612 +       }, {
 613 +               .compatible = "qcom,ipq8064-tsens",
 614 +               .data = &data_ipq8064,
 615         },
 616         {}
 617  };
 618 --- a/drivers/thermal/qcom/tsens.h
 619 +++ b/drivers/thermal/qcom/tsens.h
 620 @@ -89,6 +89,6 @@ void compute_intercept_slope(struct tsen
 621  int init_common(struct tsens_device *);
 622  int get_temp_common(struct tsens_device *, int, int *);
 623
 624 -extern const struct tsens_data data_8916, data_8974, data_8960, data_8996;
 625 +extern const struct tsens_data data_8916, data_8974, data_8960, data_8996, data_ipq8064;
 626
 627  #endif /* __QCOM_TSENS_H__ */