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 bool is_smo8500_device; 112 }; 113 114 enum kxcjk1013_axis { 115 AXIS_X, 116 AXIS_Y, 117 AXIS_Z, 118 }; 119 120 enum kxcjk1013_mode { 121 STANDBY, 122 OPERATION, 123 }; 124 125 enum kxcjk1013_range { 126 KXCJK1013_RANGE_2G, 127 KXCJK1013_RANGE_4G, 128 KXCJK1013_RANGE_8G, 129 }; 130 131 static const struct { 132 int val; 133 int val2; 134 int odr_bits; 135 } samp_freq_table[] = { {0, 781000, 0x08}, {1, 563000, 0x09}, 136 {3, 125000, 0x0A}, {6, 250000, 0x0B}, {12, 500000, 0}, 137 {25, 0, 0x01}, {50, 0, 0x02}, {100, 0, 0x03}, 138 {200, 0, 0x04}, {400, 0, 0x05}, {800, 0, 0x06}, 139 {1600, 0, 0x07} }; 140 141 /* Refer to section 4 of the specification */ 142 static const struct { 143 int odr_bits; 144 int usec; 145 } odr_start_up_times[KX_MAX_CHIPS][12] = { 146 /* KXCJK-1013 */ 147 { 148 {0x08, 100000}, 149 {0x09, 100000}, 150 {0x0A, 100000}, 151 {0x0B, 100000}, 152 {0, 80000}, 153 {0x01, 41000}, 154 {0x02, 21000}, 155 {0x03, 11000}, 156 {0x04, 6400}, 157 {0x05, 3900}, 158 {0x06, 2700}, 159 {0x07, 2100}, 160 }, 161 /* KXCJ9-1008 */ 162 { 163 {0x08, 100000}, 164 {0x09, 100000}, 165 {0x0A, 100000}, 166 {0x0B, 100000}, 167 {0, 80000}, 168 {0x01, 41000}, 169 {0x02, 21000}, 170 {0x03, 11000}, 171 {0x04, 6400}, 172 {0x05, 3900}, 173 {0x06, 2700}, 174 {0x07, 2100}, 175 }, 176 /* KXCTJ2-1009 */ 177 { 178 {0x08, 1240000}, 179 {0x09, 621000}, 180 {0x0A, 309000}, 181 {0x0B, 151000}, 182 {0, 80000}, 183 {0x01, 41000}, 184 {0x02, 21000}, 185 {0x03, 11000}, 186 {0x04, 6000}, 187 {0x05, 4000}, 188 {0x06, 3000}, 189 {0x07, 2000}, 190 }, 191 }; 192 193 static const struct { 194 u16 scale; 195 u8 gsel_0; 196 u8 gsel_1; 197 } KXCJK1013_scale_table[] = { {9582, 0, 0}, 198 {19163, 1, 0}, 199 {38326, 0, 1} }; 200 201 static const struct { 202 int val; 203 int val2; 204 int odr_bits; 205 } wake_odr_data_rate_table[] = { {0, 781000, 0x00}, 206 {1, 563000, 0x01}, 207 {3, 125000, 0x02}, 208 {6, 250000, 0x03}, 209 {12, 500000, 0x04}, 210 {25, 0, 0x05}, 211 {50, 0, 0x06}, 212 {100, 0, 0x06}, 213 {200, 0, 0x06}, 214 {400, 0, 0x06}, 215 {800, 0, 0x06}, 216 {1600, 0, 0x06} }; 217 218 static int kxcjk1013_set_mode(struct kxcjk1013_data *data, 219 enum kxcjk1013_mode mode) 220 { 221 int ret; 222 223 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 224 if (ret < 0) { 225 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 226 return ret; 227 } 228 229 if (mode == STANDBY) 230 ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1; 231 else 232 ret |= KXCJK1013_REG_CTRL1_BIT_PC1; 233 234 ret = i2c_smbus_write_byte_data(data->client, 235 KXCJK1013_REG_CTRL1, ret); 236 if (ret < 0) { 237 dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); 238 return ret; 239 } 240 241 return 0; 242 } 243 244 static int kxcjk1013_get_mode(struct kxcjk1013_data *data, 245 enum kxcjk1013_mode *mode) 246 { 247 int ret; 248 249 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 250 if (ret < 0) { 251 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 252 return ret; 253 } 254 255 if (ret & KXCJK1013_REG_CTRL1_BIT_PC1) 256 *mode = OPERATION; 257 else 258 *mode = STANDBY; 259 260 return 0; 261 } 262 263 static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index) 264 { 265 int ret; 266 267 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 268 if (ret < 0) { 269 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 270 return ret; 271 } 272 273 ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 | 274 KXCJK1013_REG_CTRL1_BIT_GSEL1); 275 ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3); 276 ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4); 277 278 ret = i2c_smbus_write_byte_data(data->client, 279 KXCJK1013_REG_CTRL1, 280 ret); 281 if (ret < 0) { 282 dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); 283 return ret; 284 } 285 286 data->range = range_index; 287 288 return 0; 289 } 290 291 static int kxcjk1013_chip_init(struct kxcjk1013_data *data) 292 { 293 int ret; 294 295 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I); 296 if (ret < 0) { 297 dev_err(&data->client->dev, "Error reading who_am_i\n"); 298 return ret; 299 } 300 301 dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret); 302 303 ret = kxcjk1013_set_mode(data, STANDBY); 304 if (ret < 0) 305 return ret; 306 307 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 308 if (ret < 0) { 309 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 310 return ret; 311 } 312 313 /* Set 12 bit mode */ 314 ret |= KXCJK1013_REG_CTRL1_BIT_RES; 315 316 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1, 317 ret); 318 if (ret < 0) { 319 dev_err(&data->client->dev, "Error reading reg_ctrl\n"); 320 return ret; 321 } 322 323 /* Setting range to 4G */ 324 ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G); 325 if (ret < 0) 326 return ret; 327 328 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL); 329 if (ret < 0) { 330 dev_err(&data->client->dev, "Error reading reg_data_ctrl\n"); 331 return ret; 332 } 333 334 data->odr_bits = ret; 335 336 /* Set up INT polarity */ 337 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); 338 if (ret < 0) { 339 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); 340 return ret; 341 } 342 343 if (data->active_high_intr) 344 ret |= KXCJK1013_REG_INT_REG1_BIT_IEA; 345 else 346 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEA; 347 348 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, 349 ret); 350 if (ret < 0) { 351 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); 352 return ret; 353 } 354 355 ret = kxcjk1013_set_mode(data, OPERATION); 356 if (ret < 0) 357 return ret; 358 359 data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES; 360 361 return 0; 362 } 363 364 #ifdef CONFIG_PM 365 static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data) 366 { 367 int i; 368 int idx = data->chipset; 369 370 for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) { 371 if (odr_start_up_times[idx][i].odr_bits == data->odr_bits) 372 return odr_start_up_times[idx][i].usec; 373 } 374 375 return KXCJK1013_MAX_STARTUP_TIME_US; 376 } 377 #endif 378 379 static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on) 380 { 381 #ifdef CONFIG_PM 382 int ret; 383 384 if (on) 385 ret = pm_runtime_get_sync(&data->client->dev); 386 else { 387 pm_runtime_mark_last_busy(&data->client->dev); 388 ret = pm_runtime_put_autosuspend(&data->client->dev); 389 } 390 if (ret < 0) { 391 dev_err(&data->client->dev, 392 "Failed: kxcjk1013_set_power_state for %d\n", on); 393 if (on) 394 pm_runtime_put_noidle(&data->client->dev); 395 return ret; 396 } 397 #endif 398 399 return 0; 400 } 401 402 static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data) 403 { 404 int ret; 405 406 ret = i2c_smbus_write_byte_data(data->client, 407 KXCJK1013_REG_WAKE_TIMER, 408 data->wake_dur); 409 if (ret < 0) { 410 dev_err(&data->client->dev, 411 "Error writing reg_wake_timer\n"); 412 return ret; 413 } 414 415 ret = i2c_smbus_write_byte_data(data->client, 416 KXCJK1013_REG_WAKE_THRES, 417 data->wake_thres); 418 if (ret < 0) { 419 dev_err(&data->client->dev, "Error writing reg_wake_thres\n"); 420 return ret; 421 } 422 423 return 0; 424 } 425 426 static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data, 427 bool status) 428 { 429 int ret; 430 enum kxcjk1013_mode store_mode; 431 432 ret = kxcjk1013_get_mode(data, &store_mode); 433 if (ret < 0) 434 return ret; 435 436 /* This is requirement by spec to change state to STANDBY */ 437 ret = kxcjk1013_set_mode(data, STANDBY); 438 if (ret < 0) 439 return ret; 440 441 ret = kxcjk1013_chip_update_thresholds(data); 442 if (ret < 0) 443 return ret; 444 445 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); 446 if (ret < 0) { 447 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); 448 return ret; 449 } 450 451 if (status) 452 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN; 453 else 454 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN; 455 456 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, 457 ret); 458 if (ret < 0) { 459 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); 460 return ret; 461 } 462 463 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 464 if (ret < 0) { 465 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 466 return ret; 467 } 468 469 if (status) 470 ret |= KXCJK1013_REG_CTRL1_BIT_WUFE; 471 else 472 ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE; 473 474 ret = i2c_smbus_write_byte_data(data->client, 475 KXCJK1013_REG_CTRL1, ret); 476 if (ret < 0) { 477 dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); 478 return ret; 479 } 480 481 if (store_mode == OPERATION) { 482 ret = kxcjk1013_set_mode(data, OPERATION); 483 if (ret < 0) 484 return ret; 485 } 486 487 return 0; 488 } 489 490 static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data, 491 bool status) 492 { 493 int ret; 494 enum kxcjk1013_mode store_mode; 495 496 ret = kxcjk1013_get_mode(data, &store_mode); 497 if (ret < 0) 498 return ret; 499 500 /* This is requirement by spec to change state to STANDBY */ 501 ret = kxcjk1013_set_mode(data, STANDBY); 502 if (ret < 0) 503 return ret; 504 505 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); 506 if (ret < 0) { 507 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); 508 return ret; 509 } 510 511 if (status) 512 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN; 513 else 514 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN; 515 516 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, 517 ret); 518 if (ret < 0) { 519 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); 520 return ret; 521 } 522 523 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); 524 if (ret < 0) { 525 dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); 526 return ret; 527 } 528 529 if (status) 530 ret |= KXCJK1013_REG_CTRL1_BIT_DRDY; 531 else 532 ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY; 533 534 ret = i2c_smbus_write_byte_data(data->client, 535 KXCJK1013_REG_CTRL1, ret); 536 if (ret < 0) { 537 dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); 538 return ret; 539 } 540 541 if (store_mode == OPERATION) { 542 ret = kxcjk1013_set_mode(data, OPERATION); 543 if (ret < 0) 544 return ret; 545 } 546 547 return 0; 548 } 549 550 static int kxcjk1013_convert_freq_to_bit(int val, int val2) 551 { 552 int i; 553 554 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) { 555 if (samp_freq_table[i].val == val && 556 samp_freq_table[i].val2 == val2) { 557 return samp_freq_table[i].odr_bits; 558 } 559 } 560 561 return -EINVAL; 562 } 563 564 static int kxcjk1013_convert_wake_odr_to_bit(int val, int val2) 565 { 566 int i; 567 568 for (i = 0; i < ARRAY_SIZE(wake_odr_data_rate_table); ++i) { 569 if (wake_odr_data_rate_table[i].val == val && 570 wake_odr_data_rate_table[i].val2 == val2) { 571 return wake_odr_data_rate_table[i].odr_bits; 572 } 573 } 574 575 return -EINVAL; 576 } 577 578 static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2) 579 { 580 int ret; 581 int odr_bits; 582 enum kxcjk1013_mode store_mode; 583 584 ret = kxcjk1013_get_mode(data, &store_mode); 585 if (ret < 0) 586 return ret; 587 588 odr_bits = kxcjk1013_convert_freq_to_bit(val, val2); 589 if (odr_bits < 0) 590 return odr_bits; 591 592 /* To change ODR, the chip must be set to STANDBY as per spec */ 593 ret = kxcjk1013_set_mode(data, STANDBY); 594 if (ret < 0) 595 return ret; 596 597 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL, 598 odr_bits); 599 if (ret < 0) { 600 dev_err(&data->client->dev, "Error writing data_ctrl\n"); 601 return ret; 602 } 603 604 data->odr_bits = odr_bits; 605 606 odr_bits = kxcjk1013_convert_wake_odr_to_bit(val, val2); 607 if (odr_bits < 0) 608 return odr_bits; 609 610 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2, 611 odr_bits); 612 if (ret < 0) { 613 dev_err(&data->client->dev, "Error writing reg_ctrl2\n"); 614 return ret; 615 } 616 617 if (store_mode == OPERATION) { 618 ret = kxcjk1013_set_mode(data, OPERATION); 619 if (ret < 0) 620 return ret; 621 } 622 623 return 0; 624 } 625 626 static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2) 627 { 628 int i; 629 630 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) { 631 if (samp_freq_table[i].odr_bits == data->odr_bits) { 632 *val = samp_freq_table[i].val; 633 *val2 = samp_freq_table[i].val2; 634 return IIO_VAL_INT_PLUS_MICRO; 635 } 636 } 637 638 return -EINVAL; 639 } 640 641 static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis) 642 { 643 u8 reg = KXCJK1013_REG_XOUT_L + axis * 2; 644 int ret; 645 646 ret = i2c_smbus_read_word_data(data->client, reg); 647 if (ret < 0) { 648 dev_err(&data->client->dev, 649 "failed to read accel_%c registers\n", 'x' + axis); 650 return ret; 651 } 652 653 return ret; 654 } 655 656 static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val) 657 { 658 int ret, i; 659 enum kxcjk1013_mode store_mode; 660 661 662 for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) { 663 if (KXCJK1013_scale_table[i].scale == val) { 664 665 ret = kxcjk1013_get_mode(data, &store_mode); 666 if (ret < 0) 667 return ret; 668 669 ret = kxcjk1013_set_mode(data, STANDBY); 670 if (ret < 0) 671 return ret; 672 673 ret = kxcjk1013_set_range(data, i); 674 if (ret < 0) 675 return ret; 676 677 if (store_mode == OPERATION) { 678 ret = kxcjk1013_set_mode(data, OPERATION); 679 if (ret) 680 return ret; 681 } 682 683 return 0; 684 } 685 } 686 687 return -EINVAL; 688 } 689 690 static int kxcjk1013_read_raw(struct iio_dev *indio_dev, 691 struct iio_chan_spec const *chan, int *val, 692 int *val2, long mask) 693 { 694 struct kxcjk1013_data *data = iio_priv(indio_dev); 695 int ret; 696 697 switch (mask) { 698 case IIO_CHAN_INFO_RAW: 699 mutex_lock(&data->mutex); 700 if (iio_buffer_enabled(indio_dev)) 701 ret = -EBUSY; 702 else { 703 ret = kxcjk1013_set_power_state(data, true); 704 if (ret < 0) { 705 mutex_unlock(&data->mutex); 706 return ret; 707 } 708 ret = kxcjk1013_get_acc_reg(data, chan->scan_index); 709 if (ret < 0) { 710 kxcjk1013_set_power_state(data, false); 711 mutex_unlock(&data->mutex); 712 return ret; 713 } 714 *val = sign_extend32(ret >> 4, 11); 715 ret = kxcjk1013_set_power_state(data, false); 716 } 717 mutex_unlock(&data->mutex); 718 719 if (ret < 0) 720 return ret; 721 722 return IIO_VAL_INT; 723 724 case IIO_CHAN_INFO_SCALE: 725 *val = 0; 726 *val2 = KXCJK1013_scale_table[data->range].scale; 727 return IIO_VAL_INT_PLUS_MICRO; 728 729 case IIO_CHAN_INFO_SAMP_FREQ: 730 mutex_lock(&data->mutex); 731 ret = kxcjk1013_get_odr(data, val, val2); 732 mutex_unlock(&data->mutex); 733 return ret; 734 735 default: 736 return -EINVAL; 737 } 738 } 739 740 static int kxcjk1013_write_raw(struct iio_dev *indio_dev, 741 struct iio_chan_spec const *chan, int val, 742 int val2, long mask) 743 { 744 struct kxcjk1013_data *data = iio_priv(indio_dev); 745 int ret; 746 747 switch (mask) { 748 case IIO_CHAN_INFO_SAMP_FREQ: 749 mutex_lock(&data->mutex); 750 ret = kxcjk1013_set_odr(data, val, val2); 751 mutex_unlock(&data->mutex); 752 break; 753 case IIO_CHAN_INFO_SCALE: 754 if (val) 755 return -EINVAL; 756 757 mutex_lock(&data->mutex); 758 ret = kxcjk1013_set_scale(data, val2); 759 mutex_unlock(&data->mutex); 760 break; 761 default: 762 ret = -EINVAL; 763 } 764 765 return ret; 766 } 767 768 static int kxcjk1013_read_event(struct iio_dev *indio_dev, 769 const struct iio_chan_spec *chan, 770 enum iio_event_type type, 771 enum iio_event_direction dir, 772 enum iio_event_info info, 773 int *val, int *val2) 774 { 775 struct kxcjk1013_data *data = iio_priv(indio_dev); 776 777 *val2 = 0; 778 switch (info) { 779 case IIO_EV_INFO_VALUE: 780 *val = data->wake_thres; 781 break; 782 case IIO_EV_INFO_PERIOD: 783 *val = data->wake_dur; 784 break; 785 default: 786 return -EINVAL; 787 } 788 789 return IIO_VAL_INT; 790 } 791 792 static int kxcjk1013_write_event(struct iio_dev *indio_dev, 793 const struct iio_chan_spec *chan, 794 enum iio_event_type type, 795 enum iio_event_direction dir, 796 enum iio_event_info info, 797 int val, int val2) 798 { 799 struct kxcjk1013_data *data = iio_priv(indio_dev); 800 801 if (data->ev_enable_state) 802 return -EBUSY; 803 804 switch (info) { 805 case IIO_EV_INFO_VALUE: 806 data->wake_thres = val; 807 break; 808 case IIO_EV_INFO_PERIOD: 809 data->wake_dur = val; 810 break; 811 default: 812 return -EINVAL; 813 } 814 815 return 0; 816 } 817 818 static int kxcjk1013_read_event_config(struct iio_dev *indio_dev, 819 const struct iio_chan_spec *chan, 820 enum iio_event_type type, 821 enum iio_event_direction dir) 822 { 823 824 struct kxcjk1013_data *data = iio_priv(indio_dev); 825 826 return data->ev_enable_state; 827 } 828 829 static int kxcjk1013_write_event_config(struct iio_dev *indio_dev, 830 const struct iio_chan_spec *chan, 831 enum iio_event_type type, 832 enum iio_event_direction dir, 833 int state) 834 { 835 struct kxcjk1013_data *data = iio_priv(indio_dev); 836 int ret; 837 838 if (state && data->ev_enable_state) 839 return 0; 840 841 mutex_lock(&data->mutex); 842 843 if (!state && data->motion_trigger_on) { 844 data->ev_enable_state = 0; 845 mutex_unlock(&data->mutex); 846 return 0; 847 } 848 849 /* 850 * We will expect the enable and disable to do operation in 851 * in reverse order. This will happen here anyway as our 852 * resume operation uses sync mode runtime pm calls, the 853 * suspend operation will be delayed by autosuspend delay 854 * So the disable operation will still happen in reverse of 855 * enable operation. When runtime pm is disabled the mode 856 * is always on so sequence doesn't matter 857 */ 858 ret = kxcjk1013_set_power_state(data, state); 859 if (ret < 0) { 860 mutex_unlock(&data->mutex); 861 return ret; 862 } 863 864 ret = kxcjk1013_setup_any_motion_interrupt(data, state); 865 if (ret < 0) { 866 kxcjk1013_set_power_state(data, false); 867 data->ev_enable_state = 0; 868 mutex_unlock(&data->mutex); 869 return ret; 870 } 871 872 data->ev_enable_state = state; 873 mutex_unlock(&data->mutex); 874 875 return 0; 876 } 877 878 static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev, 879 struct iio_trigger *trig) 880 { 881 struct kxcjk1013_data *data = iio_priv(indio_dev); 882 883 if (data->dready_trig != trig && data->motion_trig != trig) 884 return -EINVAL; 885 886 return 0; 887 } 888 889 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( 890 "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600"); 891 892 static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326"); 893 894 static struct attribute *kxcjk1013_attributes[] = { 895 &iio_const_attr_sampling_frequency_available.dev_attr.attr, 896 &iio_const_attr_in_accel_scale_available.dev_attr.attr, 897 NULL, 898 }; 899 900 static const struct attribute_group kxcjk1013_attrs_group = { 901 .attrs = kxcjk1013_attributes, 902 }; 903 904 static const struct iio_event_spec kxcjk1013_event = { 905 .type = IIO_EV_TYPE_THRESH, 906 .dir = IIO_EV_DIR_EITHER, 907 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 908 BIT(IIO_EV_INFO_ENABLE) | 909 BIT(IIO_EV_INFO_PERIOD) 910 }; 911 912 #define KXCJK1013_CHANNEL(_axis) { \ 913 .type = IIO_ACCEL, \ 914 .modified = 1, \ 915 .channel2 = IIO_MOD_##_axis, \ 916 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ 917 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ 918 BIT(IIO_CHAN_INFO_SAMP_FREQ), \ 919 .scan_index = AXIS_##_axis, \ 920 .scan_type = { \ 921 .sign = 's', \ 922 .realbits = 12, \ 923 .storagebits = 16, \ 924 .shift = 4, \ 925 .endianness = IIO_CPU, \ 926 }, \ 927 .event_spec = &kxcjk1013_event, \ 928 .num_event_specs = 1 \ 929 } 930 931 static const struct iio_chan_spec kxcjk1013_channels[] = { 932 KXCJK1013_CHANNEL(X), 933 KXCJK1013_CHANNEL(Y), 934 KXCJK1013_CHANNEL(Z), 935 IIO_CHAN_SOFT_TIMESTAMP(3), 936 }; 937 938 static const struct iio_info kxcjk1013_info = { 939 .attrs = &kxcjk1013_attrs_group, 940 .read_raw = kxcjk1013_read_raw, 941 .write_raw = kxcjk1013_write_raw, 942 .read_event_value = kxcjk1013_read_event, 943 .write_event_value = kxcjk1013_write_event, 944 .write_event_config = kxcjk1013_write_event_config, 945 .read_event_config = kxcjk1013_read_event_config, 946 .validate_trigger = kxcjk1013_validate_trigger, 947 .driver_module = THIS_MODULE, 948 }; 949 950 static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p) 951 { 952 struct iio_poll_func *pf = p; 953 struct iio_dev *indio_dev = pf->indio_dev; 954 struct kxcjk1013_data *data = iio_priv(indio_dev); 955 int bit, ret, i = 0; 956 957 mutex_lock(&data->mutex); 958 959 for_each_set_bit(bit, indio_dev->buffer->scan_mask, 960 indio_dev->masklength) { 961 ret = kxcjk1013_get_acc_reg(data, bit); 962 if (ret < 0) { 963 mutex_unlock(&data->mutex); 964 goto err; 965 } 966 data->buffer[i++] = ret; 967 } 968 mutex_unlock(&data->mutex); 969 970 iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, 971 data->timestamp); 972 err: 973 iio_trigger_notify_done(indio_dev->trig); 974 975 return IRQ_HANDLED; 976 } 977 978 static int kxcjk1013_trig_try_reen(struct iio_trigger *trig) 979 { 980 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); 981 struct kxcjk1013_data *data = iio_priv(indio_dev); 982 int ret; 983 984 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL); 985 if (ret < 0) { 986 dev_err(&data->client->dev, "Error reading reg_int_rel\n"); 987 return ret; 988 } 989 990 return 0; 991 } 992 993 static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig, 994 bool state) 995 { 996 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); 997 struct kxcjk1013_data *data = iio_priv(indio_dev); 998 int ret; 999 1000 mutex_lock(&data->mutex); 1001 1002 if (!state && data->ev_enable_state && data->motion_trigger_on) { 1003 data->motion_trigger_on = false; 1004 mutex_unlock(&data->mutex); 1005 return 0; 1006 } 1007 1008 ret = kxcjk1013_set_power_state(data, state); 1009 if (ret < 0) { 1010 mutex_unlock(&data->mutex); 1011 return ret; 1012 } 1013 if (data->motion_trig == trig) 1014 ret = kxcjk1013_setup_any_motion_interrupt(data, state); 1015 else 1016 ret = kxcjk1013_setup_new_data_interrupt(data, state); 1017 if (ret < 0) { 1018 kxcjk1013_set_power_state(data, false); 1019 mutex_unlock(&data->mutex); 1020 return ret; 1021 } 1022 if (data->motion_trig == trig) 1023 data->motion_trigger_on = state; 1024 else 1025 data->dready_trigger_on = state; 1026 1027 mutex_unlock(&data->mutex); 1028 1029 return 0; 1030 } 1031 1032 static const struct iio_trigger_ops kxcjk1013_trigger_ops = { 1033 .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state, 1034 .try_reenable = kxcjk1013_trig_try_reen, 1035 .owner = THIS_MODULE, 1036 }; 1037 1038 static irqreturn_t kxcjk1013_event_handler(int irq, void *private) 1039 { 1040 struct iio_dev *indio_dev = private; 1041 struct kxcjk1013_data *data = iio_priv(indio_dev); 1042 int ret; 1043 1044 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1); 1045 if (ret < 0) { 1046 dev_err(&data->client->dev, "Error reading reg_int_src1\n"); 1047 goto ack_intr; 1048 } 1049 1050 if (ret & 0x02) { 1051 ret = i2c_smbus_read_byte_data(data->client, 1052 KXCJK1013_REG_INT_SRC2); 1053 if (ret < 0) { 1054 dev_err(&data->client->dev, 1055 "Error reading reg_int_src2\n"); 1056 goto ack_intr; 1057 } 1058 1059 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN) 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_FALLING), 1066 data->timestamp); 1067 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP) 1068 iio_push_event(indio_dev, 1069 IIO_MOD_EVENT_CODE(IIO_ACCEL, 1070 0, 1071 IIO_MOD_X, 1072 IIO_EV_TYPE_THRESH, 1073 IIO_EV_DIR_RISING), 1074 data->timestamp); 1075 1076 1077 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN) 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_FALLING), 1084 data->timestamp); 1085 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP) 1086 iio_push_event(indio_dev, 1087 IIO_MOD_EVENT_CODE(IIO_ACCEL, 1088 0, 1089 IIO_MOD_Y, 1090 IIO_EV_TYPE_THRESH, 1091 IIO_EV_DIR_RISING), 1092 data->timestamp); 1093 1094 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN) 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_FALLING), 1101 data->timestamp); 1102 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP) 1103 iio_push_event(indio_dev, 1104 IIO_MOD_EVENT_CODE(IIO_ACCEL, 1105 0, 1106 IIO_MOD_Z, 1107 IIO_EV_TYPE_THRESH, 1108 IIO_EV_DIR_RISING), 1109 data->timestamp); 1110 } 1111 1112 ack_intr: 1113 if (data->dready_trigger_on) 1114 return IRQ_HANDLED; 1115 1116 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL); 1117 if (ret < 0) 1118 dev_err(&data->client->dev, "Error reading reg_int_rel\n"); 1119 1120 return IRQ_HANDLED; 1121 } 1122 1123 static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private) 1124 { 1125 struct iio_dev *indio_dev = private; 1126 struct kxcjk1013_data *data = iio_priv(indio_dev); 1127 1128 data->timestamp = iio_get_time_ns(); 1129 1130 if (data->dready_trigger_on) 1131 iio_trigger_poll(data->dready_trig); 1132 else if (data->motion_trigger_on) 1133 iio_trigger_poll(data->motion_trig); 1134 1135 if (data->ev_enable_state) 1136 return IRQ_WAKE_THREAD; 1137 else 1138 return IRQ_HANDLED; 1139 } 1140 1141 static const char *kxcjk1013_match_acpi_device(struct device *dev, 1142 enum kx_chipset *chipset, 1143 bool *is_smo8500_device) 1144 { 1145 const struct acpi_device_id *id; 1146 1147 id = acpi_match_device(dev->driver->acpi_match_table, dev); 1148 if (!id) 1149 return NULL; 1150 if (strcmp(id->id, "SMO8500") == 0) 1151 *is_smo8500_device = true; 1152 *chipset = (enum kx_chipset)id->driver_data; 1153 1154 return dev_name(dev); 1155 } 1156 1157 static int kxcjk1013_gpio_probe(struct i2c_client *client, 1158 struct kxcjk1013_data *data) 1159 { 1160 struct device *dev; 1161 struct gpio_desc *gpio; 1162 int ret; 1163 1164 if (!client) 1165 return -EINVAL; 1166 if (data->is_smo8500_device) 1167 return -ENOTSUPP; 1168 1169 dev = &client->dev; 1170 1171 /* data ready gpio interrupt pin */ 1172 gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0); 1173 if (IS_ERR(gpio)) { 1174 dev_err(dev, "acpi gpio get index failed\n"); 1175 return PTR_ERR(gpio); 1176 } 1177 1178 ret = gpiod_direction_input(gpio); 1179 if (ret) 1180 return ret; 1181 1182 ret = gpiod_to_irq(gpio); 1183 1184 dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); 1185 1186 return ret; 1187 } 1188 1189 static int kxcjk1013_probe(struct i2c_client *client, 1190 const struct i2c_device_id *id) 1191 { 1192 struct kxcjk1013_data *data; 1193 struct iio_dev *indio_dev; 1194 struct kxcjk_1013_platform_data *pdata; 1195 const char *name; 1196 int ret; 1197 1198 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 1199 if (!indio_dev) 1200 return -ENOMEM; 1201 1202 data = iio_priv(indio_dev); 1203 i2c_set_clientdata(client, indio_dev); 1204 data->client = client; 1205 1206 pdata = dev_get_platdata(&client->dev); 1207 if (pdata) 1208 data->active_high_intr = pdata->active_high_intr; 1209 else 1210 data->active_high_intr = true; /* default polarity */ 1211 1212 if (id) { 1213 data->chipset = (enum kx_chipset)(id->driver_data); 1214 name = id->name; 1215 } else if (ACPI_HANDLE(&client->dev)) { 1216 name = kxcjk1013_match_acpi_device(&client->dev, 1217 &data->chipset, 1218 &data->is_smo8500_device); 1219 } else 1220 return -ENODEV; 1221 1222 ret = kxcjk1013_chip_init(data); 1223 if (ret < 0) 1224 return ret; 1225 1226 mutex_init(&data->mutex); 1227 1228 indio_dev->dev.parent = &client->dev; 1229 indio_dev->channels = kxcjk1013_channels; 1230 indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels); 1231 indio_dev->name = name; 1232 indio_dev->modes = INDIO_DIRECT_MODE; 1233 indio_dev->info = &kxcjk1013_info; 1234 1235 if (client->irq < 0) 1236 client->irq = kxcjk1013_gpio_probe(client, data); 1237 1238 if (client->irq >= 0) { 1239 ret = devm_request_threaded_irq(&client->dev, client->irq, 1240 kxcjk1013_data_rdy_trig_poll, 1241 kxcjk1013_event_handler, 1242 IRQF_TRIGGER_RISING, 1243 KXCJK1013_IRQ_NAME, 1244 indio_dev); 1245 if (ret) 1246 goto err_poweroff; 1247 1248 data->dready_trig = devm_iio_trigger_alloc(&client->dev, 1249 "%s-dev%d", 1250 indio_dev->name, 1251 indio_dev->id); 1252 if (!data->dready_trig) { 1253 ret = -ENOMEM; 1254 goto err_poweroff; 1255 } 1256 1257 data->motion_trig = devm_iio_trigger_alloc(&client->dev, 1258 "%s-any-motion-dev%d", 1259 indio_dev->name, 1260 indio_dev->id); 1261 if (!data->motion_trig) { 1262 ret = -ENOMEM; 1263 goto err_poweroff; 1264 } 1265 1266 data->dready_trig->dev.parent = &client->dev; 1267 data->dready_trig->ops = &kxcjk1013_trigger_ops; 1268 iio_trigger_set_drvdata(data->dready_trig, indio_dev); 1269 indio_dev->trig = data->dready_trig; 1270 iio_trigger_get(indio_dev->trig); 1271 ret = iio_trigger_register(data->dready_trig); 1272 if (ret) 1273 goto err_poweroff; 1274 1275 data->motion_trig->dev.parent = &client->dev; 1276 data->motion_trig->ops = &kxcjk1013_trigger_ops; 1277 iio_trigger_set_drvdata(data->motion_trig, indio_dev); 1278 ret = iio_trigger_register(data->motion_trig); 1279 if (ret) { 1280 data->motion_trig = NULL; 1281 goto err_trigger_unregister; 1282 } 1283 1284 ret = iio_triggered_buffer_setup(indio_dev, 1285 &iio_pollfunc_store_time, 1286 kxcjk1013_trigger_handler, 1287 NULL); 1288 if (ret < 0) { 1289 dev_err(&client->dev, 1290 "iio triggered buffer setup failed\n"); 1291 goto err_trigger_unregister; 1292 } 1293 } 1294 1295 ret = iio_device_register(indio_dev); 1296 if (ret < 0) { 1297 dev_err(&client->dev, "unable to register iio device\n"); 1298 goto err_buffer_cleanup; 1299 } 1300 1301 ret = pm_runtime_set_active(&client->dev); 1302 if (ret) 1303 goto err_iio_unregister; 1304 1305 pm_runtime_enable(&client->dev); 1306 pm_runtime_set_autosuspend_delay(&client->dev, 1307 KXCJK1013_SLEEP_DELAY_MS); 1308 pm_runtime_use_autosuspend(&client->dev); 1309 1310 return 0; 1311 1312 err_iio_unregister: 1313 iio_device_unregister(indio_dev); 1314 err_buffer_cleanup: 1315 if (data->dready_trig) 1316 iio_triggered_buffer_cleanup(indio_dev); 1317 err_trigger_unregister: 1318 if (data->dready_trig) 1319 iio_trigger_unregister(data->dready_trig); 1320 if (data->motion_trig) 1321 iio_trigger_unregister(data->motion_trig); 1322 err_poweroff: 1323 kxcjk1013_set_mode(data, STANDBY); 1324 1325 return ret; 1326 } 1327 1328 static int kxcjk1013_remove(struct i2c_client *client) 1329 { 1330 struct iio_dev *indio_dev = i2c_get_clientdata(client); 1331 struct kxcjk1013_data *data = iio_priv(indio_dev); 1332 1333 pm_runtime_disable(&client->dev); 1334 pm_runtime_set_suspended(&client->dev); 1335 pm_runtime_put_noidle(&client->dev); 1336 1337 iio_device_unregister(indio_dev); 1338 1339 if (data->dready_trig) { 1340 iio_triggered_buffer_cleanup(indio_dev); 1341 iio_trigger_unregister(data->dready_trig); 1342 iio_trigger_unregister(data->motion_trig); 1343 } 1344 1345 mutex_lock(&data->mutex); 1346 kxcjk1013_set_mode(data, STANDBY); 1347 mutex_unlock(&data->mutex); 1348 1349 return 0; 1350 } 1351 1352 #ifdef CONFIG_PM_SLEEP 1353 static int kxcjk1013_suspend(struct device *dev) 1354 { 1355 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 1356 struct kxcjk1013_data *data = iio_priv(indio_dev); 1357 int ret; 1358 1359 mutex_lock(&data->mutex); 1360 ret = kxcjk1013_set_mode(data, STANDBY); 1361 mutex_unlock(&data->mutex); 1362 1363 return ret; 1364 } 1365 1366 static int kxcjk1013_resume(struct device *dev) 1367 { 1368 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 1369 struct kxcjk1013_data *data = iio_priv(indio_dev); 1370 int ret = 0; 1371 1372 mutex_lock(&data->mutex); 1373 ret = kxcjk1013_set_mode(data, OPERATION); 1374 mutex_unlock(&data->mutex); 1375 1376 return ret; 1377 } 1378 #endif 1379 1380 #ifdef CONFIG_PM 1381 static int kxcjk1013_runtime_suspend(struct device *dev) 1382 { 1383 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 1384 struct kxcjk1013_data *data = iio_priv(indio_dev); 1385 int ret; 1386 1387 ret = kxcjk1013_set_mode(data, STANDBY); 1388 if (ret < 0) { 1389 dev_err(&data->client->dev, "powering off device failed\n"); 1390 return -EAGAIN; 1391 } 1392 return 0; 1393 } 1394 1395 static int kxcjk1013_runtime_resume(struct device *dev) 1396 { 1397 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 1398 struct kxcjk1013_data *data = iio_priv(indio_dev); 1399 int ret; 1400 int sleep_val; 1401 1402 ret = kxcjk1013_set_mode(data, OPERATION); 1403 if (ret < 0) 1404 return ret; 1405 1406 sleep_val = kxcjk1013_get_startup_times(data); 1407 if (sleep_val < 20000) 1408 usleep_range(sleep_val, 20000); 1409 else 1410 msleep_interruptible(sleep_val/1000); 1411 1412 return 0; 1413 } 1414 #endif 1415 1416 static const struct dev_pm_ops kxcjk1013_pm_ops = { 1417 SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume) 1418 SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend, 1419 kxcjk1013_runtime_resume, NULL) 1420 }; 1421 1422 static const struct acpi_device_id kx_acpi_match[] = { 1423 {"KXCJ1013", KXCJK1013}, 1424 {"KXCJ1008", KXCJ91008}, 1425 {"KXTJ1009", KXTJ21009}, 1426 {"SMO8500", KXCJ91008}, 1427 { }, 1428 }; 1429 MODULE_DEVICE_TABLE(acpi, kx_acpi_match); 1430 1431 static const struct i2c_device_id kxcjk1013_id[] = { 1432 {"kxcjk1013", KXCJK1013}, 1433 {"kxcj91008", KXCJ91008}, 1434 {"kxtj21009", KXTJ21009}, 1435 {"SMO8500", KXCJ91008}, 1436 {} 1437 }; 1438 1439 MODULE_DEVICE_TABLE(i2c, kxcjk1013_id); 1440 1441 static struct i2c_driver kxcjk1013_driver = { 1442 .driver = { 1443 .name = KXCJK1013_DRV_NAME, 1444 .acpi_match_table = ACPI_PTR(kx_acpi_match), 1445 .pm = &kxcjk1013_pm_ops, 1446 }, 1447 .probe = kxcjk1013_probe, 1448 .remove = kxcjk1013_remove, 1449 .id_table = kxcjk1013_id, 1450 }; 1451 module_i2c_driver(kxcjk1013_driver); 1452 1453 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); 1454 MODULE_LICENSE("GPL v2"); 1455 MODULE_DESCRIPTION("KXCJK1013 accelerometer driver"); 1456