drivers/iio/accel/kxcjk-1013.c

   1 /*
   2  * KXCJK-1013 3-axis accelerometer driver
   3  * Copyright (c) 2014, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/i2c.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/delay.h>
  19 #include <linux/bitops.h>
  20 #include <linux/slab.h>
  21 #include <linux/string.h>
  22 #include <linux/acpi.h>
  23 #include <linux/gpio/consumer.h>
  24 #include <linux/pm.h>
  25 #include <linux/pm_runtime.h>
  26 #include <linux/iio/iio.h>
  27 #include <linux/iio/sysfs.h>
  28 #include <linux/iio/buffer.h>
  29 #include <linux/iio/trigger.h>
  30 #include <linux/iio/events.h>
  31 #include <linux/iio/trigger_consumer.h>
  32 #include <linux/iio/triggered_buffer.h>
  33 #include <linux/iio/accel/kxcjk_1013.h>
  34
  35 #define KXCJK1013_DRV_NAME "kxcjk1013"
  36 #define KXCJK1013_IRQ_NAME "kxcjk1013_event"
  37
  38 #define KXCJK1013_REG_XOUT_L            0x06
  39 /*
  40  * From low byte X axis register, all the other addresses of Y and Z can be
  41  * obtained by just applying axis offset. The following axis defines are just
  42  * provide clarity, but not used.
  43  */
  44 #define KXCJK1013_REG_XOUT_H            0x07
  45 #define KXCJK1013_REG_YOUT_L            0x08
  46 #define KXCJK1013_REG_YOUT_H            0x09
  47 #define KXCJK1013_REG_ZOUT_L            0x0A
  48 #define KXCJK1013_REG_ZOUT_H            0x0B
  49
  50 #define KXCJK1013_REG_DCST_RESP         0x0C
  51 #define KXCJK1013_REG_WHO_AM_I          0x0F
  52 #define KXCJK1013_REG_INT_SRC1          0x16
  53 #define KXCJK1013_REG_INT_SRC2          0x17
  54 #define KXCJK1013_REG_STATUS_REG        0x18
  55 #define KXCJK1013_REG_INT_REL           0x1A
  56 #define KXCJK1013_REG_CTRL1             0x1B
  57 #define KXCJK1013_REG_CTRL2             0x1D
  58 #define KXCJK1013_REG_INT_CTRL1         0x1E
  59 #define KXCJK1013_REG_INT_CTRL2         0x1F
  60 #define KXCJK1013_REG_DATA_CTRL         0x21
  61 #define KXCJK1013_REG_WAKE_TIMER        0x29
  62 #define KXCJK1013_REG_SELF_TEST         0x3A
  63 #define KXCJK1013_REG_WAKE_THRES        0x6A
  64
  65 #define KXCJK1013_REG_CTRL1_BIT_PC1     BIT(7)
  66 #define KXCJK1013_REG_CTRL1_BIT_RES     BIT(6)
  67 #define KXCJK1013_REG_CTRL1_BIT_DRDY    BIT(5)
  68 #define KXCJK1013_REG_CTRL1_BIT_GSEL1   BIT(4)
  69 #define KXCJK1013_REG_CTRL1_BIT_GSEL0   BIT(3)
  70 #define KXCJK1013_REG_CTRL1_BIT_WUFE    BIT(1)
  71 #define KXCJK1013_REG_INT_REG1_BIT_IEA  BIT(4)
  72 #define KXCJK1013_REG_INT_REG1_BIT_IEN  BIT(5)
  73
  74 #define KXCJK1013_DATA_MASK_12_BIT      0x0FFF
  75 #define KXCJK1013_MAX_STARTUP_TIME_US   100000
  76
  77 #define KXCJK1013_SLEEP_DELAY_MS        2000
  78
  79 #define KXCJK1013_REG_INT_SRC2_BIT_ZP   BIT(0)
  80 #define KXCJK1013_REG_INT_SRC2_BIT_ZN   BIT(1)
  81 #define KXCJK1013_REG_INT_SRC2_BIT_YP   BIT(2)
  82 #define KXCJK1013_REG_INT_SRC2_BIT_YN   BIT(3)
  83 #define KXCJK1013_REG_INT_SRC2_BIT_XP   BIT(4)
  84 #define KXCJK1013_REG_INT_SRC2_BIT_XN   BIT(5)
  85
  86 #define KXCJK1013_DEFAULT_WAKE_THRES    1
  87
  88 enum kx_chipset {
  89         KXCJK1013,
  90         KXCJ91008,
  91         KXTJ21009,
  92         KX_MAX_CHIPS /* this must be last */
  93 };
  94
  95 struct kxcjk1013_data {
  96         struct i2c_client *client;
  97         struct iio_trigger *dready_trig;
  98         struct iio_trigger *motion_trig;
  99         struct mutex mutex;
 100         s16 buffer[8];
 101         u8 odr_bits;
 102         u8 range;
 103         int wake_thres;
 104         int wake_dur;
 105         bool active_high_intr;
 106         bool dready_trigger_on;
 107         int ev_enable_state;
 108         bool motion_trigger_on;
 109         int64_t timestamp;
 110         enum kx_chipset chipset;
 111 };
 112
 113 enum kxcjk1013_axis {
 114         AXIS_X,
 115         AXIS_Y,
 116         AXIS_Z,
 117 };
 118
 119 enum kxcjk1013_mode {
 120         STANDBY,
 121         OPERATION,
 122 };
 123
 124 enum kxcjk1013_range {
 125         KXCJK1013_RANGE_2G,
 126         KXCJK1013_RANGE_4G,
 127         KXCJK1013_RANGE_8G,
 128 };
 129
 130 static const struct {
 131         int val;
 132         int val2;
 133         int odr_bits;
 134 } samp_freq_table[] = { {0, 781000, 0x08}, {1, 563000, 0x09},
 135                         {3, 125000, 0x0A}, {6, 250000, 0x0B}, {12, 500000, 0},
 136                         {25, 0, 0x01}, {50, 0, 0x02}, {100, 0, 0x03},
 137                         {200, 0, 0x04}, {400, 0, 0x05}, {800, 0, 0x06},
 138                         {1600, 0, 0x07} };
 139
 140 /* Refer to section 4 of the specification */
 141 static const struct {
 142         int odr_bits;
 143         int usec;
 144 } odr_start_up_times[KX_MAX_CHIPS][12] = {
 145         /* KXCJK-1013 */
 146         {
 147                 {0x08, 100000},
 148                 {0x09, 100000},
 149                 {0x0A, 100000},
 150                 {0x0B, 100000},
 151                 {0, 80000},
 152                 {0x01, 41000},
 153                 {0x02, 21000},
 154                 {0x03, 11000},
 155                 {0x04, 6400},
 156                 {0x05, 3900},
 157                 {0x06, 2700},
 158                 {0x07, 2100},
 159         },
 160         /* KXCJ9-1008 */
 161         {
 162                 {0x08, 100000},
 163                 {0x09, 100000},
 164                 {0x0A, 100000},
 165                 {0x0B, 100000},
 166                 {0, 80000},
 167                 {0x01, 41000},
 168                 {0x02, 21000},
 169                 {0x03, 11000},
 170                 {0x04, 6400},
 171                 {0x05, 3900},
 172                 {0x06, 2700},
 173                 {0x07, 2100},
 174         },
 175         /* KXCTJ2-1009 */
 176         {
 177                 {0x08, 1240000},
 178                 {0x09, 621000},
 179                 {0x0A, 309000},
 180                 {0x0B, 151000},
 181                 {0, 80000},
 182                 {0x01, 41000},
 183                 {0x02, 21000},
 184                 {0x03, 11000},
 185                 {0x04, 6000},
 186                 {0x05, 4000},
 187                 {0x06, 3000},
 188                 {0x07, 2000},
 189         },
 190 };
 191
 192 static const struct {
 193         u16 scale;
 194         u8 gsel_0;
 195         u8 gsel_1;
 196 } KXCJK1013_scale_table[] = { {9582, 0, 0},
 197                               {19163, 1, 0},
 198                               {38326, 0, 1} };
 199
 200 static const struct {
 201         int val;
 202         int val2;
 203         int odr_bits;
 204 } wake_odr_data_rate_table[] = { {0, 781000, 0x00},
 205                                  {1, 563000, 0x01},
 206                                  {3, 125000, 0x02},
 207                                  {6, 250000, 0x03},
 208                                  {12, 500000, 0x04},
 209                                  {25, 0, 0x05},
 210                                  {50, 0, 0x06},
 211                                  {100, 0, 0x06},
 212                                  {200, 0, 0x06},
 213                                  {400, 0, 0x06},
 214                                  {800, 0, 0x06},
 215                                  {1600, 0, 0x06} };
 216
 217 static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
 218                               enum kxcjk1013_mode mode)
 219 {
 220         int ret;
 221
 222         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 223         if (ret < 0) {
 224                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 225                 return ret;
 226         }
 227
 228         if (mode == STANDBY)
 229                 ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1;
 230         else
 231                 ret |= KXCJK1013_REG_CTRL1_BIT_PC1;
 232
 233         ret = i2c_smbus_write_byte_data(data->client,
 234                                         KXCJK1013_REG_CTRL1, ret);
 235         if (ret < 0) {
 236                 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 237                 return ret;
 238         }
 239
 240         return 0;
 241 }
 242
 243 static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
 244                               enum kxcjk1013_mode *mode)
 245 {
 246         int ret;
 247
 248         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 249         if (ret < 0) {
 250                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 251                 return ret;
 252         }
 253
 254         if (ret & KXCJK1013_REG_CTRL1_BIT_PC1)
 255                 *mode = OPERATION;
 256         else
 257                 *mode = STANDBY;
 258
 259         return 0;
 260 }
 261
 262 static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
 263 {
 264         int ret;
 265
 266         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 267         if (ret < 0) {
 268                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 269                 return ret;
 270         }
 271
 272         ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 |
 273                  KXCJK1013_REG_CTRL1_BIT_GSEL1);
 274         ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
 275         ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);
 276
 277         ret = i2c_smbus_write_byte_data(data->client,
 278                                         KXCJK1013_REG_CTRL1,
 279                                         ret);
 280         if (ret < 0) {
 281                 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 282                 return ret;
 283         }
 284
 285         data->range = range_index;
 286
 287         return 0;
 288 }
 289
 290 static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 291 {
 292         int ret;
 293
 294         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
 295         if (ret < 0) {
 296                 dev_err(&data->client->dev, "Error reading who_am_i\n");
 297                 return ret;
 298         }
 299
 300         dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret);
 301
 302         ret = kxcjk1013_set_mode(data, STANDBY);
 303         if (ret < 0)
 304                 return ret;
 305
 306         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 307         if (ret < 0) {
 308                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 309                 return ret;
 310         }
 311
 312         /* Set 12 bit mode */
 313         ret |= KXCJK1013_REG_CTRL1_BIT_RES;
 314
 315         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1,
 316                                         ret);
 317         if (ret < 0) {
 318                 dev_err(&data->client->dev, "Error reading reg_ctrl\n");
 319                 return ret;
 320         }
 321
 322         /* Setting range to 4G */
 323         ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G);
 324         if (ret < 0)
 325                 return ret;
 326
 327         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
 328         if (ret < 0) {
 329                 dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
 330                 return ret;
 331         }
 332
 333         data->odr_bits = ret;
 334
 335         /* Set up INT polarity */
 336         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
 337         if (ret < 0) {
 338                 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 339                 return ret;
 340         }
 341
 342         if (data->active_high_intr)
 343                 ret |= KXCJK1013_REG_INT_REG1_BIT_IEA;
 344         else
 345                 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEA;
 346
 347         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
 348                                         ret);
 349         if (ret < 0) {
 350                 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 351                 return ret;
 352         }
 353
 354         ret = kxcjk1013_set_mode(data, OPERATION);
 355         if (ret < 0)
 356                 return ret;
 357
 358         data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES;
 359
 360         return 0;
 361 }
 362
 363 #ifdef CONFIG_PM
 364 static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
 365 {
 366         int i;
 367         int idx = data->chipset;
 368
 369         for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) {
 370                 if (odr_start_up_times[idx][i].odr_bits == data->odr_bits)
 371                         return odr_start_up_times[idx][i].usec;
 372         }
 373
 374         return KXCJK1013_MAX_STARTUP_TIME_US;
 375 }
 376 #endif
 377
 378 static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
 379 {
 380         int ret;
 381
 382         if (on)
 383                 ret = pm_runtime_get_sync(&data->client->dev);
 384         else {
 385                 pm_runtime_mark_last_busy(&data->client->dev);
 386                 ret = pm_runtime_put_autosuspend(&data->client->dev);
 387         }
 388         if (ret < 0) {
 389                 dev_err(&data->client->dev,
 390                         "Failed: kxcjk1013_set_power_state for %d\n", on);
 391                 return ret;
 392         }
 393
 394         return 0;
 395 }
 396
 397 static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
 398 {
 399         int ret;
 400
 401         ret = i2c_smbus_write_byte_data(data->client,
 402                                         KXCJK1013_REG_WAKE_TIMER,
 403                                         data->wake_dur);
 404         if (ret < 0) {
 405                 dev_err(&data->client->dev,
 406                         "Error writing reg_wake_timer\n");
 407                 return ret;
 408         }
 409
 410         ret = i2c_smbus_write_byte_data(data->client,
 411                                         KXCJK1013_REG_WAKE_THRES,
 412                                         data->wake_thres);
 413         if (ret < 0) {
 414                 dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
 415                 return ret;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
 422                                                 bool status)
 423 {
 424         int ret;
 425         enum kxcjk1013_mode store_mode;
 426
 427         ret = kxcjk1013_get_mode(data, &store_mode);
 428         if (ret < 0)
 429                 return ret;
 430
 431         /* This is requirement by spec to change state to STANDBY */
 432         ret = kxcjk1013_set_mode(data, STANDBY);
 433         if (ret < 0)
 434                 return ret;
 435
 436         ret = kxcjk1013_chip_update_thresholds(data);
 437         if (ret < 0)
 438                 return ret;
 439
 440         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
 441         if (ret < 0) {
 442                 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 443                 return ret;
 444         }
 445
 446         if (status)
 447                 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
 448         else
 449                 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
 450
 451         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
 452                                         ret);
 453         if (ret < 0) {
 454                 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 455                 return ret;
 456         }
 457
 458         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 459         if (ret < 0) {
 460                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 461                 return ret;
 462         }
 463
 464         if (status)
 465                 ret |= KXCJK1013_REG_CTRL1_BIT_WUFE;
 466         else
 467                 ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;
 468
 469         ret = i2c_smbus_write_byte_data(data->client,
 470                                         KXCJK1013_REG_CTRL1, ret);
 471         if (ret < 0) {
 472                 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 473                 return ret;
 474         }
 475
 476         if (store_mode == OPERATION) {
 477                 ret = kxcjk1013_set_mode(data, OPERATION);
 478                 if (ret < 0)
 479                         return ret;
 480         }
 481
 482         return 0;
 483 }
 484
 485 static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
 486                                               bool status)
 487 {
 488         int ret;
 489         enum kxcjk1013_mode store_mode;
 490
 491         ret = kxcjk1013_get_mode(data, &store_mode);
 492         if (ret < 0)
 493                 return ret;
 494
 495         /* This is requirement by spec to change state to STANDBY */
 496         ret = kxcjk1013_set_mode(data, STANDBY);
 497         if (ret < 0)
 498                 return ret;
 499
 500         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
 501         if (ret < 0) {
 502                 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 503                 return ret;
 504         }
 505
 506         if (status)
 507                 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
 508         else
 509                 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
 510
 511         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
 512                                         ret);
 513         if (ret < 0) {
 514                 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 515                 return ret;
 516         }
 517
 518         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
 519         if (ret < 0) {
 520                 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 521                 return ret;
 522         }
 523
 524         if (status)
 525                 ret |= KXCJK1013_REG_CTRL1_BIT_DRDY;
 526         else
 527                 ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;
 528
 529         ret = i2c_smbus_write_byte_data(data->client,
 530                                         KXCJK1013_REG_CTRL1, ret);
 531         if (ret < 0) {
 532                 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 533                 return ret;
 534         }
 535
 536         if (store_mode == OPERATION) {
 537                 ret = kxcjk1013_set_mode(data, OPERATION);
 538                 if (ret < 0)
 539                         return ret;
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int kxcjk1013_convert_freq_to_bit(int val, int val2)
 546 {
 547         int i;
 548
 549         for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
 550                 if (samp_freq_table[i].val == val &&
 551                         samp_freq_table[i].val2 == val2) {
 552                         return samp_freq_table[i].odr_bits;
 553                 }
 554         }
 555
 556         return -EINVAL;
 557 }
 558
 559 static int kxcjk1013_convert_wake_odr_to_bit(int val, int val2)
 560 {
 561         int i;
 562
 563         for (i = 0; i < ARRAY_SIZE(wake_odr_data_rate_table); ++i) {
 564                 if (wake_odr_data_rate_table[i].val == val &&
 565                         wake_odr_data_rate_table[i].val2 == val2) {
 566                         return wake_odr_data_rate_table[i].odr_bits;
 567                 }
 568         }
 569
 570         return -EINVAL;
 571 }
 572
 573 static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
 574 {
 575         int ret;
 576         int odr_bits;
 577         enum kxcjk1013_mode store_mode;
 578
 579         ret = kxcjk1013_get_mode(data, &store_mode);
 580         if (ret < 0)
 581                 return ret;
 582
 583         odr_bits = kxcjk1013_convert_freq_to_bit(val, val2);
 584         if (odr_bits < 0)
 585                 return odr_bits;
 586
 587         /* To change ODR, the chip must be set to STANDBY as per spec */
 588         ret = kxcjk1013_set_mode(data, STANDBY);
 589         if (ret < 0)
 590                 return ret;
 591
 592         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL,
 593                                         odr_bits);
 594         if (ret < 0) {
 595                 dev_err(&data->client->dev, "Error writing data_ctrl\n");
 596                 return ret;
 597         }
 598
 599         data->odr_bits = odr_bits;
 600
 601         odr_bits = kxcjk1013_convert_wake_odr_to_bit(val, val2);
 602         if (odr_bits < 0)
 603                 return odr_bits;
 604
 605         ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2,
 606                                         odr_bits);
 607         if (ret < 0) {
 608                 dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
 609                 return ret;
 610         }
 611
 612         if (store_mode == OPERATION) {
 613                 ret = kxcjk1013_set_mode(data, OPERATION);
 614                 if (ret < 0)
 615                         return ret;
 616         }
 617
 618         return 0;
 619 }
 620
 621 static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
 622 {
 623         int i;
 624
 625         for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
 626                 if (samp_freq_table[i].odr_bits == data->odr_bits) {
 627                         *val = samp_freq_table[i].val;
 628                         *val2 = samp_freq_table[i].val2;
 629                         return IIO_VAL_INT_PLUS_MICRO;
 630                 }
 631         }
 632
 633         return -EINVAL;
 634 }
 635
 636 static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
 637 {
 638         u8 reg = KXCJK1013_REG_XOUT_L + axis * 2;
 639         int ret;
 640
 641         ret = i2c_smbus_read_word_data(data->client, reg);
 642         if (ret < 0) {
 643                 dev_err(&data->client->dev,
 644                         "failed to read accel_%c registers\n", 'x' + axis);
 645                 return ret;
 646         }
 647
 648         return ret;
 649 }
 650
 651 static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val)
 652 {
 653         int ret, i;
 654         enum kxcjk1013_mode store_mode;
 655
 656
 657         for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) {
 658                 if (KXCJK1013_scale_table[i].scale == val) {
 659
 660                         ret = kxcjk1013_get_mode(data, &store_mode);
 661                         if (ret < 0)
 662                                 return ret;
 663
 664                         ret = kxcjk1013_set_mode(data, STANDBY);
 665                         if (ret < 0)
 666                                 return ret;
 667
 668                         ret = kxcjk1013_set_range(data, i);
 669                         if (ret < 0)
 670                                 return ret;
 671
 672                         if (store_mode == OPERATION) {
 673                                 ret = kxcjk1013_set_mode(data, OPERATION);
 674                                 if (ret)
 675                                         return ret;
 676                         }
 677
 678                         return 0;
 679                 }
 680         }
 681
 682         return -EINVAL;
 683 }
 684
 685 static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
 686                               struct iio_chan_spec const *chan, int *val,
 687                               int *val2, long mask)
 688 {
 689         struct kxcjk1013_data *data = iio_priv(indio_dev);
 690         int ret;
 691
 692         switch (mask) {
 693         case IIO_CHAN_INFO_RAW:
 694                 mutex_lock(&data->mutex);
 695                 if (iio_buffer_enabled(indio_dev))
 696                         ret = -EBUSY;
 697                 else {
 698                         ret = kxcjk1013_set_power_state(data, true);
 699                         if (ret < 0) {
 700                                 mutex_unlock(&data->mutex);
 701                                 return ret;
 702                         }
 703                         ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
 704                         if (ret < 0) {
 705                                 kxcjk1013_set_power_state(data, false);
 706                                 mutex_unlock(&data->mutex);
 707                                 return ret;
 708                         }
 709                         *val = sign_extend32(ret >> 4, 11);
 710                         ret = kxcjk1013_set_power_state(data, false);
 711                 }
 712                 mutex_unlock(&data->mutex);
 713
 714                 if (ret < 0)
 715                         return ret;
 716
 717                 return IIO_VAL_INT;
 718
 719         case IIO_CHAN_INFO_SCALE:
 720                 *val = 0;
 721                 *val2 = KXCJK1013_scale_table[data->range].scale;
 722                 return IIO_VAL_INT_PLUS_MICRO;
 723
 724         case IIO_CHAN_INFO_SAMP_FREQ:
 725                 mutex_lock(&data->mutex);
 726                 ret = kxcjk1013_get_odr(data, val, val2);
 727                 mutex_unlock(&data->mutex);
 728                 return ret;
 729
 730         default:
 731                 return -EINVAL;
 732         }
 733 }
 734
 735 static int kxcjk1013_write_raw(struct iio_dev *indio_dev,
 736                                struct iio_chan_spec const *chan, int val,
 737                                int val2, long mask)
 738 {
 739         struct kxcjk1013_data *data = iio_priv(indio_dev);
 740         int ret;
 741
 742         switch (mask) {
 743         case IIO_CHAN_INFO_SAMP_FREQ:
 744                 mutex_lock(&data->mutex);
 745                 ret = kxcjk1013_set_odr(data, val, val2);
 746                 mutex_unlock(&data->mutex);
 747                 break;
 748         case IIO_CHAN_INFO_SCALE:
 749                 if (val)
 750                         return -EINVAL;
 751
 752                 mutex_lock(&data->mutex);
 753                 ret = kxcjk1013_set_scale(data, val2);
 754                 mutex_unlock(&data->mutex);
 755                 break;
 756         default:
 757                 ret = -EINVAL;
 758         }
 759
 760         return ret;
 761 }
 762
 763 static int kxcjk1013_read_event(struct iio_dev *indio_dev,
 764                                    const struct iio_chan_spec *chan,
 765                                    enum iio_event_type type,
 766                                    enum iio_event_direction dir,
 767                                    enum iio_event_info info,
 768                                    int *val, int *val2)
 769 {
 770         struct kxcjk1013_data *data = iio_priv(indio_dev);
 771
 772         *val2 = 0;
 773         switch (info) {
 774         case IIO_EV_INFO_VALUE:
 775                 *val = data->wake_thres;
 776                 break;
 777         case IIO_EV_INFO_PERIOD:
 778                 *val = data->wake_dur;
 779                 break;
 780         default:
 781                 return -EINVAL;
 782         }
 783
 784         return IIO_VAL_INT;
 785 }
 786
 787 static int kxcjk1013_write_event(struct iio_dev *indio_dev,
 788                                     const struct iio_chan_spec *chan,
 789                                     enum iio_event_type type,
 790                                     enum iio_event_direction dir,
 791                                     enum iio_event_info info,
 792                                     int val, int val2)
 793 {
 794         struct kxcjk1013_data *data = iio_priv(indio_dev);
 795
 796         if (data->ev_enable_state)
 797                 return -EBUSY;
 798
 799         switch (info) {
 800         case IIO_EV_INFO_VALUE:
 801                 data->wake_thres = val;
 802                 break;
 803         case IIO_EV_INFO_PERIOD:
 804                 data->wake_dur = val;
 805                 break;
 806         default:
 807                 return -EINVAL;
 808         }
 809
 810         return 0;
 811 }
 812
 813 static int kxcjk1013_read_event_config(struct iio_dev *indio_dev,
 814                                           const struct iio_chan_spec *chan,
 815                                           enum iio_event_type type,
 816                                           enum iio_event_direction dir)
 817 {
 818
 819         struct kxcjk1013_data *data = iio_priv(indio_dev);
 820
 821         return data->ev_enable_state;
 822 }
 823
 824 static int kxcjk1013_write_event_config(struct iio_dev *indio_dev,
 825                                            const struct iio_chan_spec *chan,
 826                                            enum iio_event_type type,
 827                                            enum iio_event_direction dir,
 828                                            int state)
 829 {
 830         struct kxcjk1013_data *data = iio_priv(indio_dev);
 831         int ret;
 832
 833         if (state && data->ev_enable_state)
 834                 return 0;
 835
 836         mutex_lock(&data->mutex);
 837
 838         if (!state && data->motion_trigger_on) {
 839                 data->ev_enable_state = 0;
 840                 mutex_unlock(&data->mutex);
 841                 return 0;
 842         }
 843
 844         /*
 845          * We will expect the enable and disable to do operation in
 846          * in reverse order. This will happen here anyway as our
 847          * resume operation uses sync mode runtime pm calls, the
 848          * suspend operation will be delayed by autosuspend delay
 849          * So the disable operation will still happen in reverse of
 850          * enable operation. When runtime pm is disabled the mode
 851          * is always on so sequence doesn't matter
 852          */
 853         ret = kxcjk1013_set_power_state(data, state);
 854         if (ret < 0) {
 855                 mutex_unlock(&data->mutex);
 856                 return ret;
 857         }
 858
 859         ret =  kxcjk1013_setup_any_motion_interrupt(data, state);
 860         if (ret < 0) {
 861                 mutex_unlock(&data->mutex);
 862                 return ret;
 863         }
 864
 865         data->ev_enable_state = state;
 866         mutex_unlock(&data->mutex);
 867
 868         return 0;
 869 }
 870
 871 static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev,
 872                                       struct iio_trigger *trig)
 873 {
 874         struct kxcjk1013_data *data = iio_priv(indio_dev);
 875
 876         if (data->dready_trig != trig && data->motion_trig != trig)
 877                 return -EINVAL;
 878
 879         return 0;
 880 }
 881
 882 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
 883         "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");
 884
 885 static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");
 886
 887 static struct attribute *kxcjk1013_attributes[] = {
 888         &iio_const_attr_sampling_frequency_available.dev_attr.attr,
 889         &iio_const_attr_in_accel_scale_available.dev_attr.attr,
 890         NULL,
 891 };
 892
 893 static const struct attribute_group kxcjk1013_attrs_group = {
 894         .attrs = kxcjk1013_attributes,
 895 };
 896
 897 static const struct iio_event_spec kxcjk1013_event = {
 898                 .type = IIO_EV_TYPE_THRESH,
 899                 .dir = IIO_EV_DIR_EITHER,
 900                 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
 901                                  BIT(IIO_EV_INFO_ENABLE) |
 902                                  BIT(IIO_EV_INFO_PERIOD)
 903 };
 904
 905 #define KXCJK1013_CHANNEL(_axis) {                                      \
 906         .type = IIO_ACCEL,                                              \
 907         .modified = 1,                                                  \
 908         .channel2 = IIO_MOD_##_axis,                                    \
 909         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),                   \
 910         .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |          \
 911                                 BIT(IIO_CHAN_INFO_SAMP_FREQ),           \
 912         .scan_index = AXIS_##_axis,                                     \
 913         .scan_type = {                                                  \
 914                 .sign = 's',                                            \
 915                 .realbits = 12,                                         \
 916                 .storagebits = 16,                                      \
 917                 .shift = 4,                                             \
 918                 .endianness = IIO_CPU,                                  \
 919         },                                                              \
 920         .event_spec = &kxcjk1013_event,                         \
 921         .num_event_specs = 1                                            \
 922 }
 923
 924 static const struct iio_chan_spec kxcjk1013_channels[] = {
 925         KXCJK1013_CHANNEL(X),
 926         KXCJK1013_CHANNEL(Y),
 927         KXCJK1013_CHANNEL(Z),
 928         IIO_CHAN_SOFT_TIMESTAMP(3),
 929 };
 930
 931 static const struct iio_info kxcjk1013_info = {
 932         .attrs                  = &kxcjk1013_attrs_group,
 933         .read_raw               = kxcjk1013_read_raw,
 934         .write_raw              = kxcjk1013_write_raw,
 935         .read_event_value       = kxcjk1013_read_event,
 936         .write_event_value      = kxcjk1013_write_event,
 937         .write_event_config     = kxcjk1013_write_event_config,
 938         .read_event_config      = kxcjk1013_read_event_config,
 939         .validate_trigger       = kxcjk1013_validate_trigger,
 940         .driver_module          = THIS_MODULE,
 941 };
 942
 943 static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
 944 {
 945         struct iio_poll_func *pf = p;
 946         struct iio_dev *indio_dev = pf->indio_dev;
 947         struct kxcjk1013_data *data = iio_priv(indio_dev);
 948         int bit, ret, i = 0;
 949
 950         mutex_lock(&data->mutex);
 951
 952         for_each_set_bit(bit, indio_dev->buffer->scan_mask,
 953                          indio_dev->masklength) {
 954                 ret = kxcjk1013_get_acc_reg(data, bit);
 955                 if (ret < 0) {
 956                         mutex_unlock(&data->mutex);
 957                         goto err;
 958                 }
 959                 data->buffer[i++] = ret;
 960         }
 961         mutex_unlock(&data->mutex);
 962
 963         iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
 964                                            data->timestamp);
 965 err:
 966         iio_trigger_notify_done(indio_dev->trig);
 967
 968         return IRQ_HANDLED;
 969 }
 970
 971 static int kxcjk1013_trig_try_reen(struct iio_trigger *trig)
 972 {
 973         struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 974         struct kxcjk1013_data *data = iio_priv(indio_dev);
 975         int ret;
 976
 977         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
 978         if (ret < 0) {
 979                 dev_err(&data->client->dev, "Error reading reg_int_rel\n");
 980                 return ret;
 981         }
 982
 983         return 0;
 984 }
 985
 986 static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
 987                                                 bool state)
 988 {
 989         struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 990         struct kxcjk1013_data *data = iio_priv(indio_dev);
 991         int ret;
 992
 993         mutex_lock(&data->mutex);
 994
 995         if (!state && data->ev_enable_state && data->motion_trigger_on) {
 996                 data->motion_trigger_on = false;
 997                 mutex_unlock(&data->mutex);
 998                 return 0;
 999         }
1000
1001         ret = kxcjk1013_set_power_state(data, state);
1002         if (ret < 0) {
1003                 mutex_unlock(&data->mutex);
1004                 return ret;
1005         }
1006         if (data->motion_trig == trig)
1007                 ret = kxcjk1013_setup_any_motion_interrupt(data, state);
1008         else
1009                 ret = kxcjk1013_setup_new_data_interrupt(data, state);
1010         if (ret < 0) {
1011                 mutex_unlock(&data->mutex);
1012                 return ret;
1013         }
1014         if (data->motion_trig == trig)
1015                 data->motion_trigger_on = state;
1016         else
1017                 data->dready_trigger_on = state;
1018
1019         mutex_unlock(&data->mutex);
1020
1021         return 0;
1022 }
1023
1024 static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
1025         .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
1026         .try_reenable = kxcjk1013_trig_try_reen,
1027         .owner = THIS_MODULE,
1028 };
1029
1030 static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
1031 {
1032         struct iio_dev *indio_dev = private;
1033         struct kxcjk1013_data *data = iio_priv(indio_dev);
1034         int ret;
1035
1036         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1);
1037         if (ret < 0) {
1038                 dev_err(&data->client->dev, "Error reading reg_int_src1\n");
1039                 goto ack_intr;
1040         }
1041
1042         if (ret & 0x02) {
1043                 ret = i2c_smbus_read_byte_data(data->client,
1044                                                KXCJK1013_REG_INT_SRC2);
1045                 if (ret < 0) {
1046                         dev_err(&data->client->dev,
1047                                 "Error reading reg_int_src2\n");
1048                         goto ack_intr;
1049                 }
1050
1051                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN)
1052                         iio_push_event(indio_dev,
1053                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1054                                        0,
1055                                        IIO_MOD_X,
1056                                        IIO_EV_TYPE_THRESH,
1057                                        IIO_EV_DIR_FALLING),
1058                                        data->timestamp);
1059                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP)
1060                         iio_push_event(indio_dev,
1061                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1062                                        0,
1063                                        IIO_MOD_X,
1064                                        IIO_EV_TYPE_THRESH,
1065                                        IIO_EV_DIR_RISING),
1066                                        data->timestamp);
1067
1068
1069                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN)
1070                         iio_push_event(indio_dev,
1071                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1072                                        0,
1073                                        IIO_MOD_Y,
1074                                        IIO_EV_TYPE_THRESH,
1075                                        IIO_EV_DIR_FALLING),
1076                                        data->timestamp);
1077                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP)
1078                         iio_push_event(indio_dev,
1079                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1080                                        0,
1081                                        IIO_MOD_Y,
1082                                        IIO_EV_TYPE_THRESH,
1083                                        IIO_EV_DIR_RISING),
1084                                        data->timestamp);
1085
1086                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN)
1087                         iio_push_event(indio_dev,
1088                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1089                                        0,
1090                                        IIO_MOD_Z,
1091                                        IIO_EV_TYPE_THRESH,
1092                                        IIO_EV_DIR_FALLING),
1093                                        data->timestamp);
1094                 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP)
1095                         iio_push_event(indio_dev,
1096                                        IIO_MOD_EVENT_CODE(IIO_ACCEL,
1097                                        0,
1098                                        IIO_MOD_Z,
1099                                        IIO_EV_TYPE_THRESH,
1100                                        IIO_EV_DIR_RISING),
1101                                        data->timestamp);
1102         }
1103
1104 ack_intr:
1105         if (data->dready_trigger_on)
1106                 return IRQ_HANDLED;
1107
1108         ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
1109         if (ret < 0)
1110                 dev_err(&data->client->dev, "Error reading reg_int_rel\n");
1111
1112         return IRQ_HANDLED;
1113 }
1114
1115 static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
1116 {
1117         struct iio_dev *indio_dev = private;
1118         struct kxcjk1013_data *data = iio_priv(indio_dev);
1119
1120         data->timestamp = iio_get_time_ns();
1121
1122         if (data->dready_trigger_on)
1123                 iio_trigger_poll(data->dready_trig);
1124         else if (data->motion_trigger_on)
1125                 iio_trigger_poll(data->motion_trig);
1126
1127         if (data->ev_enable_state)
1128                 return IRQ_WAKE_THREAD;
1129         else
1130                 return IRQ_HANDLED;
1131 }
1132
1133 static const char *kxcjk1013_match_acpi_device(struct device *dev,
1134                                                enum kx_chipset *chipset)
1135 {
1136         const struct acpi_device_id *id;
1137         id = acpi_match_device(dev->driver->acpi_match_table, dev);
1138         if (!id)
1139                 return NULL;
1140         *chipset = (enum kx_chipset)id->driver_data;
1141
1142         return dev_name(dev);
1143 }
1144
1145 static int kxcjk1013_gpio_probe(struct i2c_client *client,
1146                                 struct kxcjk1013_data *data)
1147 {
1148         struct device *dev;
1149         struct gpio_desc *gpio;
1150         int ret;
1151
1152         if (!client)
1153                 return -EINVAL;
1154
1155         dev = &client->dev;
1156
1157         /* data ready gpio interrupt pin */
1158         gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
1159         if (IS_ERR(gpio)) {
1160                 dev_err(dev, "acpi gpio get index failed\n");
1161                 return PTR_ERR(gpio);
1162         }
1163
1164         ret = gpiod_direction_input(gpio);
1165         if (ret)
1166                 return ret;
1167
1168         ret = gpiod_to_irq(gpio);
1169
1170         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
1171
1172         return ret;
1173 }
1174
1175 static int kxcjk1013_probe(struct i2c_client *client,
1176                            const struct i2c_device_id *id)
1177 {
1178         struct kxcjk1013_data *data;
1179         struct iio_dev *indio_dev;
1180         struct kxcjk_1013_platform_data *pdata;
1181         const char *name;
1182         int ret;
1183
1184         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
1185         if (!indio_dev)
1186                 return -ENOMEM;
1187
1188         data = iio_priv(indio_dev);
1189         i2c_set_clientdata(client, indio_dev);
1190         data->client = client;
1191
1192         pdata = dev_get_platdata(&client->dev);
1193         if (pdata)
1194                 data->active_high_intr = pdata->active_high_intr;
1195         else
1196                 data->active_high_intr = true; /* default polarity */
1197
1198         if (id) {
1199                 data->chipset = (enum kx_chipset)(id->driver_data);
1200                 name = id->name;
1201         } else if (ACPI_HANDLE(&client->dev)) {
1202                 name = kxcjk1013_match_acpi_device(&client->dev,
1203                                                    &data->chipset);
1204         } else
1205                 return -ENODEV;
1206
1207         ret = kxcjk1013_chip_init(data);
1208         if (ret < 0)
1209                 return ret;
1210
1211         mutex_init(&data->mutex);
1212
1213         indio_dev->dev.parent = &client->dev;
1214         indio_dev->channels = kxcjk1013_channels;
1215         indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
1216         indio_dev->name = name;
1217         indio_dev->modes = INDIO_DIRECT_MODE;
1218         indio_dev->info = &kxcjk1013_info;
1219
1220         if (client->irq < 0)
1221                 client->irq = kxcjk1013_gpio_probe(client, data);
1222
1223         if (client->irq >= 0) {
1224                 ret = devm_request_threaded_irq(&client->dev, client->irq,
1225                                                 kxcjk1013_data_rdy_trig_poll,
1226                                                 kxcjk1013_event_handler,
1227                                                 IRQF_TRIGGER_RISING,
1228                                                 KXCJK1013_IRQ_NAME,
1229                                                 indio_dev);
1230                 if (ret)
1231                         return ret;
1232
1233                 data->dready_trig = devm_iio_trigger_alloc(&client->dev,
1234                                                            "%s-dev%d",
1235                                                            indio_dev->name,
1236                                                            indio_dev->id);
1237                 if (!data->dready_trig)
1238                         return -ENOMEM;
1239
1240                 data->motion_trig = devm_iio_trigger_alloc(&client->dev,
1241                                                           "%s-any-motion-dev%d",
1242                                                           indio_dev->name,
1243                                                           indio_dev->id);
1244                 if (!data->motion_trig)
1245                         return -ENOMEM;
1246
1247                 data->dready_trig->dev.parent = &client->dev;
1248                 data->dready_trig->ops = &kxcjk1013_trigger_ops;
1249                 iio_trigger_set_drvdata(data->dready_trig, indio_dev);
1250                 indio_dev->trig = data->dready_trig;
1251                 iio_trigger_get(indio_dev->trig);
1252                 ret = iio_trigger_register(data->dready_trig);
1253                 if (ret)
1254                         return ret;
1255
1256                 data->motion_trig->dev.parent = &client->dev;
1257                 data->motion_trig->ops = &kxcjk1013_trigger_ops;
1258                 iio_trigger_set_drvdata(data->motion_trig, indio_dev);
1259                 ret = iio_trigger_register(data->motion_trig);
1260                 if (ret) {
1261                         data->motion_trig = NULL;
1262                         goto err_trigger_unregister;
1263                 }
1264
1265                 ret = iio_triggered_buffer_setup(indio_dev,
1266                                                 &iio_pollfunc_store_time,
1267                                                 kxcjk1013_trigger_handler,
1268                                                 NULL);
1269                 if (ret < 0) {
1270                         dev_err(&client->dev,
1271                                         "iio triggered buffer setup failed\n");
1272                         goto err_trigger_unregister;
1273                 }
1274         }
1275
1276         ret = iio_device_register(indio_dev);
1277         if (ret < 0) {
1278                 dev_err(&client->dev, "unable to register iio device\n");
1279                 goto err_buffer_cleanup;
1280         }
1281
1282         ret = pm_runtime_set_active(&client->dev);
1283         if (ret)
1284                 goto err_iio_unregister;
1285
1286         pm_runtime_enable(&client->dev);
1287         pm_runtime_set_autosuspend_delay(&client->dev,
1288                                          KXCJK1013_SLEEP_DELAY_MS);
1289         pm_runtime_use_autosuspend(&client->dev);
1290
1291         return 0;
1292
1293 err_iio_unregister:
1294         iio_device_unregister(indio_dev);
1295 err_buffer_cleanup:
1296         if (data->dready_trig)
1297                 iio_triggered_buffer_cleanup(indio_dev);
1298 err_trigger_unregister:
1299         if (data->dready_trig)
1300                 iio_trigger_unregister(data->dready_trig);
1301         if (data->motion_trig)
1302                 iio_trigger_unregister(data->motion_trig);
1303
1304         return ret;
1305 }
1306
1307 static int kxcjk1013_remove(struct i2c_client *client)
1308 {
1309         struct iio_dev *indio_dev = i2c_get_clientdata(client);
1310         struct kxcjk1013_data *data = iio_priv(indio_dev);
1311
1312         pm_runtime_disable(&client->dev);
1313         pm_runtime_set_suspended(&client->dev);
1314         pm_runtime_put_noidle(&client->dev);
1315
1316         iio_device_unregister(indio_dev);
1317
1318         if (data->dready_trig) {
1319                 iio_triggered_buffer_cleanup(indio_dev);
1320                 iio_trigger_unregister(data->dready_trig);
1321                 iio_trigger_unregister(data->motion_trig);
1322         }
1323
1324         mutex_lock(&data->mutex);
1325         kxcjk1013_set_mode(data, STANDBY);
1326         mutex_unlock(&data->mutex);
1327
1328         return 0;
1329 }
1330
1331 #ifdef CONFIG_PM_SLEEP
1332 static int kxcjk1013_suspend(struct device *dev)
1333 {
1334         struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1335         struct kxcjk1013_data *data = iio_priv(indio_dev);
1336         int ret;
1337
1338         mutex_lock(&data->mutex);
1339         ret = kxcjk1013_set_mode(data, STANDBY);
1340         mutex_unlock(&data->mutex);
1341
1342         return ret;
1343 }
1344
1345 static int kxcjk1013_resume(struct device *dev)
1346 {
1347         struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1348         struct kxcjk1013_data *data = iio_priv(indio_dev);
1349         int ret = 0;
1350
1351         mutex_lock(&data->mutex);
1352         /* Check, if the suspend occured while active */
1353         if (data->dready_trigger_on || data->motion_trigger_on ||
1354                                                         data->ev_enable_state)
1355                 ret = kxcjk1013_set_mode(data, OPERATION);
1356         mutex_unlock(&data->mutex);
1357
1358         return ret;
1359 }
1360 #endif
1361
1362 #ifdef CONFIG_PM
1363 static int kxcjk1013_runtime_suspend(struct device *dev)
1364 {
1365         struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1366         struct kxcjk1013_data *data = iio_priv(indio_dev);
1367
1368         return kxcjk1013_set_mode(data, STANDBY);
1369 }
1370
1371 static int kxcjk1013_runtime_resume(struct device *dev)
1372 {
1373         struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1374         struct kxcjk1013_data *data = iio_priv(indio_dev);
1375         int ret;
1376         int sleep_val;
1377
1378         ret = kxcjk1013_set_mode(data, OPERATION);
1379         if (ret < 0)
1380                 return ret;
1381
1382         sleep_val = kxcjk1013_get_startup_times(data);
1383         if (sleep_val < 20000)
1384                 usleep_range(sleep_val, 20000);
1385         else
1386                 msleep_interruptible(sleep_val/1000);
1387
1388         return 0;
1389 }
1390 #endif
1391
1392 static const struct dev_pm_ops kxcjk1013_pm_ops = {
1393         SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume)
1394         SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend,
1395                            kxcjk1013_runtime_resume, NULL)
1396 };
1397
1398 static const struct acpi_device_id kx_acpi_match[] = {
1399         {"KXCJ1013", KXCJK1013},
1400         {"KXCJ1008", KXCJ91008},
1401         {"KXTJ1009", KXTJ21009},
1402         { },
1403 };
1404 MODULE_DEVICE_TABLE(acpi, kx_acpi_match);
1405
1406 static const struct i2c_device_id kxcjk1013_id[] = {
1407         {"kxcjk1013", KXCJK1013},
1408         {"kxcj91008", KXCJ91008},
1409         {"kxtj21009", KXTJ21009},
1410         {}
1411 };
1412
1413 MODULE_DEVICE_TABLE(i2c, kxcjk1013_id);
1414
1415 static struct i2c_driver kxcjk1013_driver = {
1416         .driver = {
1417                 .name   = KXCJK1013_DRV_NAME,
1418                 .acpi_match_table = ACPI_PTR(kx_acpi_match),
1419                 .pm     = &kxcjk1013_pm_ops,
1420         },
1421         .probe          = kxcjk1013_probe,
1422         .remove         = kxcjk1013_remove,
1423         .id_table       = kxcjk1013_id,
1424 };
1425 module_i2c_driver(kxcjk1013_driver);
1426
1427 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
1428 MODULE_LICENSE("GPL v2");
1429 MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");