1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * STMicroelectronics magnetometers driver 4 * 5 * Copyright 2012-2013 STMicroelectronics Inc. 6 * 7 * Denis Ciocca <denis.ciocca@st.com> 8 */ 9 10#include <linux/kernel.h> 11#include <linux/module.h> 12#include <linux/mutex.h> 13#include <linux/sysfs.h> 14#include <linux/iio/iio.h> 15#include <linux/iio/sysfs.h> 16#include <linux/iio/trigger.h> 17 18#include <linux/iio/common/st_sensors.h> 19#include "st_magn.h" 20 21#define ST_MAGN_NUMBER_DATA_CHANNELS 3 22 23/* DEFAULT VALUE FOR SENSORS */ 24#define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0x03 25#define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0x07 26#define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0x05 27 28/* FULLSCALE */ 29#define ST_MAGN_FS_AVL_1300MG 1300 30#define ST_MAGN_FS_AVL_1900MG 1900 31#define ST_MAGN_FS_AVL_2000MG 2000 32#define ST_MAGN_FS_AVL_2500MG 2500 33#define ST_MAGN_FS_AVL_4000MG 4000 34#define ST_MAGN_FS_AVL_4700MG 4700 35#define ST_MAGN_FS_AVL_5600MG 5600 36#define ST_MAGN_FS_AVL_8000MG 8000 37#define ST_MAGN_FS_AVL_8100MG 8100 38#define ST_MAGN_FS_AVL_12000MG 12000 39#define ST_MAGN_FS_AVL_15000MG 15000 40#define ST_MAGN_FS_AVL_16000MG 16000 41 42/* Special L addresses for Sensor 2 */ 43#define ST_MAGN_2_OUT_X_L_ADDR 0x28 44#define ST_MAGN_2_OUT_Y_L_ADDR 0x2a 45#define ST_MAGN_2_OUT_Z_L_ADDR 0x2c 46 47/* Special L addresses for sensor 3 */ 48#define ST_MAGN_3_OUT_X_L_ADDR 0x68 49#define ST_MAGN_3_OUT_Y_L_ADDR 0x6a 50#define ST_MAGN_3_OUT_Z_L_ADDR 0x6c 51 52/* Special L addresses for sensor 4 */ 53#define ST_MAGN_4_OUT_X_L_ADDR 0x08 54#define ST_MAGN_4_OUT_Y_L_ADDR 0x0a 55#define ST_MAGN_4_OUT_Z_L_ADDR 0x0c 56 57static const struct iio_mount_matrix * 58st_magn_get_mount_matrix(const struct iio_dev *indio_dev, 59 const struct iio_chan_spec *chan) 60{ 61 struct st_sensor_data *mdata = iio_priv(indio_dev); 62 63 return &mdata->mount_matrix; 64} 65 66static const struct iio_chan_spec_ext_info st_magn_mount_matrix_ext_info[] = { 67 IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_magn_get_mount_matrix), 68 { } 69}; 70 71static const struct iio_chan_spec st_magn_16bit_channels[] = { 72 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 73 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 74 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16, 75 ST_MAGN_DEFAULT_OUT_X_H_ADDR, 76 st_magn_mount_matrix_ext_info), 77 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 78 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 79 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16, 80 ST_MAGN_DEFAULT_OUT_Y_H_ADDR, 81 st_magn_mount_matrix_ext_info), 82 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 83 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 84 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16, 85 ST_MAGN_DEFAULT_OUT_Z_H_ADDR, 86 st_magn_mount_matrix_ext_info), 87 IIO_CHAN_SOFT_TIMESTAMP(3) 88}; 89 90static const struct iio_chan_spec st_magn_2_16bit_channels[] = { 91 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 92 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 93 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, 94 ST_MAGN_2_OUT_X_L_ADDR, 95 st_magn_mount_matrix_ext_info), 96 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 97 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 98 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, 99 ST_MAGN_2_OUT_Y_L_ADDR, 100 st_magn_mount_matrix_ext_info), 101 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 102 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 103 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, 104 ST_MAGN_2_OUT_Z_L_ADDR, 105 st_magn_mount_matrix_ext_info), 106 IIO_CHAN_SOFT_TIMESTAMP(3) 107}; 108 109static const struct iio_chan_spec st_magn_3_16bit_channels[] = { 110 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 111 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 112 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, 113 ST_MAGN_3_OUT_X_L_ADDR, 114 st_magn_mount_matrix_ext_info), 115 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 116 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 117 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, 118 ST_MAGN_3_OUT_Y_L_ADDR, 119 st_magn_mount_matrix_ext_info), 120 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN, 121 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 122 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, 123 ST_MAGN_3_OUT_Z_L_ADDR, 124 st_magn_mount_matrix_ext_info), 125 IIO_CHAN_SOFT_TIMESTAMP(3) 126}; 127 128static const struct iio_chan_spec st_magn_4_16bit_channels[] = { 129 ST_SENSORS_LSM_CHANNELS(IIO_MAGN, 130 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 131 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, 132 ST_MAGN_4_OUT_X_L_ADDR), 133 ST_SENSORS_LSM_CHANNELS(IIO_MAGN, 134 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 135 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, 136 ST_MAGN_4_OUT_Y_L_ADDR), 137 ST_SENSORS_LSM_CHANNELS(IIO_MAGN, 138 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 139 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, 140 ST_MAGN_4_OUT_Z_L_ADDR), 141 IIO_CHAN_SOFT_TIMESTAMP(3) 142}; 143 144static const struct st_sensor_settings st_magn_sensors_settings[] = { 145 { 146 .wai = 0, /* This sensor has no valid WhoAmI report 0 */ 147 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, 148 .sensors_supported = { 149 [0] = LSM303DLH_MAGN_DEV_NAME, 150 }, 151 .ch = (struct iio_chan_spec *)st_magn_16bit_channels, 152 .odr = { 153 .addr = 0x00, 154 .mask = 0x1c, 155 .odr_avl = { 156 { .hz = 1, .value = 0x00 }, 157 { .hz = 2, .value = 0x01 }, 158 { .hz = 3, .value = 0x02 }, 159 { .hz = 8, .value = 0x03 }, 160 { .hz = 15, .value = 0x04 }, 161 { .hz = 30, .value = 0x05 }, 162 { .hz = 75, .value = 0x06 }, 163 /* 220 Hz, 0x07 reportedly exist */ 164 }, 165 }, 166 .pw = { 167 .addr = 0x02, 168 .mask = 0x03, 169 .value_on = 0x00, 170 .value_off = 0x03, 171 }, 172 .fs = { 173 .addr = 0x01, 174 .mask = 0xe0, 175 .fs_avl = { 176 [0] = { 177 .num = ST_MAGN_FS_AVL_1300MG, 178 .value = 0x01, 179 .gain = 1100, 180 .gain2 = 980, 181 }, 182 [1] = { 183 .num = ST_MAGN_FS_AVL_1900MG, 184 .value = 0x02, 185 .gain = 855, 186 .gain2 = 760, 187 }, 188 [2] = { 189 .num = ST_MAGN_FS_AVL_2500MG, 190 .value = 0x03, 191 .gain = 670, 192 .gain2 = 600, 193 }, 194 [3] = { 195 .num = ST_MAGN_FS_AVL_4000MG, 196 .value = 0x04, 197 .gain = 450, 198 .gain2 = 400, 199 }, 200 [4] = { 201 .num = ST_MAGN_FS_AVL_4700MG, 202 .value = 0x05, 203 .gain = 400, 204 .gain2 = 355, 205 }, 206 [5] = { 207 .num = ST_MAGN_FS_AVL_5600MG, 208 .value = 0x06, 209 .gain = 330, 210 .gain2 = 295, 211 }, 212 [6] = { 213 .num = ST_MAGN_FS_AVL_8100MG, 214 .value = 0x07, 215 .gain = 230, 216 .gain2 = 205, 217 }, 218 }, 219 }, 220 .multi_read_bit = false, 221 .bootime = 2, 222 }, 223 { 224 .wai = 0x3c, 225 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, 226 .sensors_supported = { 227 [0] = LSM303DLHC_MAGN_DEV_NAME, 228 [1] = LSM303DLM_MAGN_DEV_NAME, 229 }, 230 .ch = (struct iio_chan_spec *)st_magn_16bit_channels, 231 .odr = { 232 .addr = 0x00, 233 .mask = 0x1c, 234 .odr_avl = { 235 { .hz = 1, .value = 0x00 }, 236 { .hz = 2, .value = 0x01 }, 237 { .hz = 3, .value = 0x02 }, 238 { .hz = 8, .value = 0x03 }, 239 { .hz = 15, .value = 0x04 }, 240 { .hz = 30, .value = 0x05 }, 241 { .hz = 75, .value = 0x06 }, 242 { .hz = 220, .value = 0x07 }, 243 }, 244 }, 245 .pw = { 246 .addr = 0x02, 247 .mask = 0x03, 248 .value_on = 0x00, 249 .value_off = 0x03, 250 }, 251 .fs = { 252 .addr = 0x01, 253 .mask = 0xe0, 254 .fs_avl = { 255 [0] = { 256 .num = ST_MAGN_FS_AVL_1300MG, 257 .value = 0x01, 258 .gain = 909, 259 .gain2 = 1020, 260 }, 261 [1] = { 262 .num = ST_MAGN_FS_AVL_1900MG, 263 .value = 0x02, 264 .gain = 1169, 265 .gain2 = 1315, 266 }, 267 [2] = { 268 .num = ST_MAGN_FS_AVL_2500MG, 269 .value = 0x03, 270 .gain = 1492, 271 .gain2 = 1666, 272 }, 273 [3] = { 274 .num = ST_MAGN_FS_AVL_4000MG, 275 .value = 0x04, 276 .gain = 2222, 277 .gain2 = 2500, 278 }, 279 [4] = { 280 .num = ST_MAGN_FS_AVL_4700MG, 281 .value = 0x05, 282 .gain = 2500, 283 .gain2 = 2816, 284 }, 285 [5] = { 286 .num = ST_MAGN_FS_AVL_5600MG, 287 .value = 0x06, 288 .gain = 3030, 289 .gain2 = 3389, 290 }, 291 [6] = { 292 .num = ST_MAGN_FS_AVL_8100MG, 293 .value = 0x07, 294 .gain = 4347, 295 .gain2 = 4878, 296 }, 297 }, 298 }, 299 .multi_read_bit = false, 300 .bootime = 2, 301 }, 302 { 303 .wai = 0x3d, 304 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, 305 .sensors_supported = { 306 [0] = LIS3MDL_MAGN_DEV_NAME, 307 [1] = LSM9DS1_MAGN_DEV_NAME, 308 [2] = LSM303C_MAGN_DEV_NAME, 309 }, 310 .ch = (struct iio_chan_spec *)st_magn_2_16bit_channels, 311 .odr = { 312 .addr = 0x20, 313 .mask = 0x1c, 314 .odr_avl = { 315 { .hz = 1, .value = 0x00 }, 316 { .hz = 2, .value = 0x01 }, 317 { .hz = 3, .value = 0x02 }, 318 { .hz = 5, .value = 0x03 }, 319 { .hz = 10, .value = 0x04 }, 320 { .hz = 20, .value = 0x05 }, 321 { .hz = 40, .value = 0x06 }, 322 { .hz = 80, .value = 0x07 }, 323 }, 324 }, 325 .pw = { 326 .addr = 0x22, 327 .mask = 0x03, 328 .value_on = 0x00, 329 .value_off = 0x03, 330 }, 331 .fs = { 332 .addr = 0x21, 333 .mask = 0x60, 334 .fs_avl = { 335 [0] = { 336 .num = ST_MAGN_FS_AVL_4000MG, 337 .value = 0x00, 338 .gain = 146, 339 }, 340 [1] = { 341 .num = ST_MAGN_FS_AVL_8000MG, 342 .value = 0x01, 343 .gain = 292, 344 }, 345 [2] = { 346 .num = ST_MAGN_FS_AVL_12000MG, 347 .value = 0x02, 348 .gain = 438, 349 }, 350 [3] = { 351 .num = ST_MAGN_FS_AVL_16000MG, 352 .value = 0x03, 353 .gain = 584, 354 }, 355 }, 356 }, 357 .bdu = { 358 .addr = 0x24, 359 .mask = 0x40, 360 }, 361 .drdy_irq = { 362 /* drdy line is routed drdy pin */ 363 .stat_drdy = { 364 .addr = ST_SENSORS_DEFAULT_STAT_ADDR, 365 .mask = 0x07, 366 }, 367 }, 368 .sim = { 369 .addr = 0x22, 370 .value = BIT(2), 371 }, 372 .multi_read_bit = true, 373 .bootime = 2, 374 }, 375 { 376 .wai = 0x40, 377 .wai_addr = 0x4f, 378 .sensors_supported = { 379 [0] = LSM303AGR_MAGN_DEV_NAME, 380 [1] = LIS2MDL_MAGN_DEV_NAME, 381 [2] = IIS2MDC_MAGN_DEV_NAME, 382 }, 383 .ch = (struct iio_chan_spec *)st_magn_3_16bit_channels, 384 .odr = { 385 .addr = 0x60, 386 .mask = 0x0c, 387 .odr_avl = { 388 { .hz = 10, .value = 0x00 }, 389 { .hz = 20, .value = 0x01 }, 390 { .hz = 50, .value = 0x02 }, 391 { .hz = 100, .value = 0x03 }, 392 }, 393 }, 394 .pw = { 395 .addr = 0x60, 396 .mask = 0x03, 397 .value_on = 0x00, 398 .value_off = 0x03, 399 }, 400 .fs = { 401 .fs_avl = { 402 [0] = { 403 .num = ST_MAGN_FS_AVL_15000MG, 404 .gain = 1500, 405 }, 406 }, 407 }, 408 .bdu = { 409 .addr = 0x62, 410 .mask = 0x10, 411 }, 412 .drdy_irq = { 413 .int1 = { 414 .addr = 0x62, 415 .mask = 0x01, 416 }, 417 .stat_drdy = { 418 .addr = 0x67, 419 .mask = 0x07, 420 }, 421 }, 422 .multi_read_bit = false, 423 .bootime = 2, 424 }, 425 { 426 .wai = 0x49, 427 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, 428 .sensors_supported = { 429 [0] = LSM9DS0_IMU_DEV_NAME, 430 [1] = LSM303D_IMU_DEV_NAME, 431 }, 432 .ch = (struct iio_chan_spec *)st_magn_4_16bit_channels, 433 .odr = { 434 .addr = 0x24, 435 .mask = GENMASK(4, 2), 436 .odr_avl = { 437 { 3, 0x00, }, 438 { 6, 0x01, }, 439 { 12, 0x02, }, 440 { 25, 0x03, }, 441 { 50, 0x04, }, 442 { 100, 0x05, }, 443 }, 444 }, 445 .pw = { 446 .addr = 0x26, 447 .mask = GENMASK(1, 0), 448 .value_on = 0x00, 449 .value_off = 0x03, 450 }, 451 .fs = { 452 .addr = 0x25, 453 .mask = GENMASK(6, 5), 454 .fs_avl = { 455 [0] = { 456 .num = ST_MAGN_FS_AVL_2000MG, 457 .value = 0x00, 458 .gain = 73, 459 }, 460 [1] = { 461 .num = ST_MAGN_FS_AVL_4000MG, 462 .value = 0x01, 463 .gain = 146, 464 }, 465 [2] = { 466 .num = ST_MAGN_FS_AVL_8000MG, 467 .value = 0x02, 468 .gain = 292, 469 }, 470 [3] = { 471 .num = ST_MAGN_FS_AVL_12000MG, 472 .value = 0x03, 473 .gain = 438, 474 }, 475 }, 476 }, 477 .bdu = { 478 .addr = 0x20, 479 .mask = BIT(3), 480 }, 481 .drdy_irq = { 482 .int1 = { 483 .addr = 0x22, 484 .mask = BIT(1), 485 }, 486 .int2 = { 487 .addr = 0x23, 488 .mask = BIT(2), 489 }, 490 .stat_drdy = { 491 .addr = 0x07, 492 .mask = GENMASK(2, 0), 493 }, 494 }, 495 .sim = { 496 .addr = 0x21, 497 .value = BIT(0), 498 }, 499 .multi_read_bit = true, 500 .bootime = 2, 501 }, 502}; 503 504/* Default magn DRDY is available on INT2 pin */ 505static const struct st_sensors_platform_data default_magn_pdata = { 506 .drdy_int_pin = 2, 507}; 508 509static int st_magn_read_raw(struct iio_dev *indio_dev, 510 struct iio_chan_spec const *ch, int *val, 511 int *val2, long mask) 512{ 513 int err; 514 struct st_sensor_data *mdata = iio_priv(indio_dev); 515 516 switch (mask) { 517 case IIO_CHAN_INFO_RAW: 518 err = st_sensors_read_info_raw(indio_dev, ch, val); 519 if (err < 0) 520 goto read_error; 521 522 return IIO_VAL_INT; 523 case IIO_CHAN_INFO_SCALE: 524 *val = 0; 525 if ((ch->scan_index == ST_SENSORS_SCAN_Z) && 526 (mdata->current_fullscale->gain2 != 0)) 527 *val2 = mdata->current_fullscale->gain2; 528 else 529 *val2 = mdata->current_fullscale->gain; 530 return IIO_VAL_INT_PLUS_MICRO; 531 case IIO_CHAN_INFO_SAMP_FREQ: 532 *val = mdata->odr; 533 return IIO_VAL_INT; 534 default: 535 return -EINVAL; 536 } 537 538read_error: 539 return err; 540} 541 542static int st_magn_write_raw(struct iio_dev *indio_dev, 543 struct iio_chan_spec const *chan, int val, int val2, long mask) 544{ 545 switch (mask) { 546 case IIO_CHAN_INFO_SCALE: 547 return st_sensors_set_fullscale_by_gain(indio_dev, val2); 548 case IIO_CHAN_INFO_SAMP_FREQ: 549 if (val2) 550 return -EINVAL; 551 552 return st_sensors_set_odr(indio_dev, val); 553 default: 554 return -EINVAL; 555 } 556} 557 558static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); 559static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available); 560 561static struct attribute *st_magn_attributes[] = { 562 &iio_dev_attr_sampling_frequency_available.dev_attr.attr, 563 &iio_dev_attr_in_magn_scale_available.dev_attr.attr, 564 NULL, 565}; 566 567static const struct attribute_group st_magn_attribute_group = { 568 .attrs = st_magn_attributes, 569}; 570 571static const struct iio_info magn_info = { 572 .attrs = &st_magn_attribute_group, 573 .read_raw = &st_magn_read_raw, 574 .write_raw = &st_magn_write_raw, 575 .debugfs_reg_access = &st_sensors_debugfs_reg_access, 576}; 577 578#ifdef CONFIG_IIO_TRIGGER 579static const struct iio_trigger_ops st_magn_trigger_ops = { 580 .set_trigger_state = ST_MAGN_TRIGGER_SET_STATE, 581 .validate_device = st_sensors_validate_device, 582}; 583#define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops) 584#else 585#define ST_MAGN_TRIGGER_OPS NULL 586#endif 587 588/* 589 * st_magn_get_settings() - get sensor settings from device name 590 * @name: device name buffer reference. 591 * 592 * Return: valid reference on success, NULL otherwise. 593 */ 594const struct st_sensor_settings *st_magn_get_settings(const char *name) 595{ 596 int index = st_sensors_get_settings_index(name, 597 st_magn_sensors_settings, 598 ARRAY_SIZE(st_magn_sensors_settings)); 599 if (index < 0) 600 return NULL; 601 602 return &st_magn_sensors_settings[index]; 603} 604EXPORT_SYMBOL_NS(st_magn_get_settings, IIO_ST_SENSORS); 605 606int st_magn_common_probe(struct iio_dev *indio_dev) 607{ 608 struct st_sensor_data *mdata = iio_priv(indio_dev); 609 struct device *parent = indio_dev->dev.parent; 610 struct st_sensors_platform_data *pdata = dev_get_platdata(parent); 611 int err; 612 613 indio_dev->modes = INDIO_DIRECT_MODE; 614 indio_dev->info = &magn_info; 615 616 err = st_sensors_verify_id(indio_dev); 617 if (err < 0) 618 return err; 619 620 mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS; 621 indio_dev->channels = mdata->sensor_settings->ch; 622 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; 623 624 err = iio_read_mount_matrix(parent, &mdata->mount_matrix); 625 if (err) 626 return err; 627 628 mdata->current_fullscale = &mdata->sensor_settings->fs.fs_avl[0]; 629 mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz; 630 631 if (!pdata) 632 pdata = (struct st_sensors_platform_data *)&default_magn_pdata; 633 634 err = st_sensors_init_sensor(indio_dev, pdata); 635 if (err < 0) 636 return err; 637 638 err = st_magn_allocate_ring(indio_dev); 639 if (err < 0) 640 return err; 641 642 if (mdata->irq > 0) { 643 err = st_sensors_allocate_trigger(indio_dev, 644 ST_MAGN_TRIGGER_OPS); 645 if (err < 0) 646 return err; 647 } 648 649 return devm_iio_device_register(parent, indio_dev); 650} 651EXPORT_SYMBOL_NS(st_magn_common_probe, IIO_ST_SENSORS); 652 653MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 654MODULE_DESCRIPTION("STMicroelectronics magnetometers driver"); 655MODULE_LICENSE("GPL v2"); 656MODULE_IMPORT_NS(IIO_ST_SENSORS); 657