1 /* 2 * HID Sensors Driver 3 * Copyright (c) 2012, 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 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 */ 19 #include <linux/device.h> 20 #include <linux/platform_device.h> 21 #include <linux/module.h> 22 #include <linux/interrupt.h> 23 #include <linux/irq.h> 24 #include <linux/slab.h> 25 #include <linux/delay.h> 26 #include <linux/hid-sensor-hub.h> 27 #include <linux/iio/iio.h> 28 #include <linux/iio/sysfs.h> 29 #include <linux/iio/buffer.h> 30 #include <linux/iio/trigger_consumer.h> 31 #include <linux/iio/triggered_buffer.h> 32 #include "../common/hid-sensors/hid-sensor-trigger.h" 33 34 enum magn_3d_channel { 35 CHANNEL_SCAN_INDEX_X, 36 CHANNEL_SCAN_INDEX_Y, 37 CHANNEL_SCAN_INDEX_Z, 38 CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP, 39 CHANNEL_SCAN_INDEX_NORTH_TRUE_TILT_COMP, 40 CHANNEL_SCAN_INDEX_NORTH_MAGN, 41 CHANNEL_SCAN_INDEX_NORTH_TRUE, 42 MAGN_3D_CHANNEL_MAX, 43 }; 44 45 struct common_attributes { 46 int scale_pre_decml; 47 int scale_post_decml; 48 int scale_precision; 49 int value_offset; 50 }; 51 52 struct magn_3d_state { 53 struct hid_sensor_hub_callbacks callbacks; 54 struct hid_sensor_common magn_flux_attributes; 55 struct hid_sensor_common rot_attributes; 56 struct hid_sensor_hub_attribute_info magn[MAGN_3D_CHANNEL_MAX]; 57 58 /* dynamically sized array to hold sensor values */ 59 u32 *iio_vals; 60 /* array of pointers to sensor value */ 61 u32 *magn_val_addr[MAGN_3D_CHANNEL_MAX]; 62 63 struct common_attributes magn_flux_attr; 64 struct common_attributes rot_attr; 65 }; 66 67 static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = { 68 HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS, 69 HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS, 70 HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS, 71 HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, 72 HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH, 73 HID_USAGE_SENSOR_ORIENT_MAGN_NORTH, 74 HID_USAGE_SENSOR_ORIENT_TRUE_NORTH, 75 }; 76 77 /* Channel definitions */ 78 static const struct iio_chan_spec magn_3d_channels[] = { 79 { 80 .type = IIO_MAGN, 81 .modified = 1, 82 .channel2 = IIO_MOD_X, 83 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 84 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 85 BIT(IIO_CHAN_INFO_SCALE) | 86 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 87 BIT(IIO_CHAN_INFO_HYSTERESIS), 88 }, { 89 .type = IIO_MAGN, 90 .modified = 1, 91 .channel2 = IIO_MOD_Y, 92 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 93 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 94 BIT(IIO_CHAN_INFO_SCALE) | 95 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 96 BIT(IIO_CHAN_INFO_HYSTERESIS), 97 }, { 98 .type = IIO_MAGN, 99 .modified = 1, 100 .channel2 = IIO_MOD_Z, 101 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 102 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 103 BIT(IIO_CHAN_INFO_SCALE) | 104 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 105 BIT(IIO_CHAN_INFO_HYSTERESIS), 106 }, { 107 .type = IIO_ROT, 108 .modified = 1, 109 .channel2 = IIO_MOD_NORTH_MAGN_TILT_COMP, 110 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 111 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 112 BIT(IIO_CHAN_INFO_SCALE) | 113 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 114 BIT(IIO_CHAN_INFO_HYSTERESIS), 115 }, { 116 .type = IIO_ROT, 117 .modified = 1, 118 .channel2 = IIO_MOD_NORTH_TRUE_TILT_COMP, 119 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 120 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 121 BIT(IIO_CHAN_INFO_SCALE) | 122 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 123 BIT(IIO_CHAN_INFO_HYSTERESIS), 124 }, { 125 .type = IIO_ROT, 126 .modified = 1, 127 .channel2 = IIO_MOD_NORTH_MAGN, 128 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 129 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 130 BIT(IIO_CHAN_INFO_SCALE) | 131 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 132 BIT(IIO_CHAN_INFO_HYSTERESIS), 133 }, { 134 .type = IIO_ROT, 135 .modified = 1, 136 .channel2 = IIO_MOD_NORTH_TRUE, 137 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 138 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | 139 BIT(IIO_CHAN_INFO_SCALE) | 140 BIT(IIO_CHAN_INFO_SAMP_FREQ) | 141 BIT(IIO_CHAN_INFO_HYSTERESIS), 142 } 143 }; 144 145 /* Adjust channel real bits based on report descriptor */ 146 static void magn_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels, 147 int channel, int size) 148 { 149 channels[channel].scan_type.sign = 's'; 150 /* Real storage bits will change based on the report desc. */ 151 channels[channel].scan_type.realbits = size * 8; 152 /* Maximum size of a sample to capture is u32 */ 153 channels[channel].scan_type.storagebits = sizeof(u32) * 8; 154 } 155 156 /* Channel read_raw handler */ 157 static int magn_3d_read_raw(struct iio_dev *indio_dev, 158 struct iio_chan_spec const *chan, 159 int *val, int *val2, 160 long mask) 161 { 162 struct magn_3d_state *magn_state = iio_priv(indio_dev); 163 int report_id = -1; 164 u32 address; 165 int ret_type; 166 167 *val = 0; 168 *val2 = 0; 169 switch (mask) { 170 case IIO_CHAN_INFO_RAW: 171 hid_sensor_power_state(&magn_state->magn_flux_attributes, true); 172 report_id = 173 magn_state->magn[chan->address].report_id; 174 address = magn_3d_addresses[chan->address]; 175 if (report_id >= 0) 176 *val = sensor_hub_input_attr_get_raw_value( 177 magn_state->magn_flux_attributes.hsdev, 178 HID_USAGE_SENSOR_COMPASS_3D, address, 179 report_id, 180 SENSOR_HUB_SYNC); 181 else { 182 *val = 0; 183 hid_sensor_power_state( 184 &magn_state->magn_flux_attributes, 185 false); 186 return -EINVAL; 187 } 188 hid_sensor_power_state(&magn_state->magn_flux_attributes, 189 false); 190 ret_type = IIO_VAL_INT; 191 break; 192 case IIO_CHAN_INFO_SCALE: 193 switch (chan->type) { 194 case IIO_MAGN: 195 *val = magn_state->magn_flux_attr.scale_pre_decml; 196 *val2 = magn_state->magn_flux_attr.scale_post_decml; 197 ret_type = magn_state->magn_flux_attr.scale_precision; 198 break; 199 case IIO_ROT: 200 *val = magn_state->rot_attr.scale_pre_decml; 201 *val2 = magn_state->rot_attr.scale_post_decml; 202 ret_type = magn_state->rot_attr.scale_precision; 203 break; 204 default: 205 ret_type = -EINVAL; 206 } 207 break; 208 case IIO_CHAN_INFO_OFFSET: 209 switch (chan->type) { 210 case IIO_MAGN: 211 *val = magn_state->magn_flux_attr.value_offset; 212 ret_type = IIO_VAL_INT; 213 break; 214 case IIO_ROT: 215 *val = magn_state->rot_attr.value_offset; 216 ret_type = IIO_VAL_INT; 217 break; 218 default: 219 ret_type = -EINVAL; 220 } 221 break; 222 case IIO_CHAN_INFO_SAMP_FREQ: 223 ret_type = hid_sensor_read_samp_freq_value( 224 &magn_state->magn_flux_attributes, val, val2); 225 break; 226 case IIO_CHAN_INFO_HYSTERESIS: 227 switch (chan->type) { 228 case IIO_MAGN: 229 ret_type = hid_sensor_read_raw_hyst_value( 230 &magn_state->magn_flux_attributes, val, val2); 231 break; 232 case IIO_ROT: 233 ret_type = hid_sensor_read_raw_hyst_value( 234 &magn_state->rot_attributes, val, val2); 235 break; 236 default: 237 ret_type = -EINVAL; 238 } 239 break; 240 default: 241 ret_type = -EINVAL; 242 break; 243 } 244 245 return ret_type; 246 } 247 248 /* Channel write_raw handler */ 249 static int magn_3d_write_raw(struct iio_dev *indio_dev, 250 struct iio_chan_spec const *chan, 251 int val, 252 int val2, 253 long mask) 254 { 255 struct magn_3d_state *magn_state = iio_priv(indio_dev); 256 int ret = 0; 257 258 switch (mask) { 259 case IIO_CHAN_INFO_SAMP_FREQ: 260 ret = hid_sensor_write_samp_freq_value( 261 &magn_state->magn_flux_attributes, val, val2); 262 break; 263 case IIO_CHAN_INFO_HYSTERESIS: 264 switch (chan->type) { 265 case IIO_MAGN: 266 ret = hid_sensor_write_raw_hyst_value( 267 &magn_state->magn_flux_attributes, val, val2); 268 break; 269 case IIO_ROT: 270 ret = hid_sensor_write_raw_hyst_value( 271 &magn_state->rot_attributes, val, val2); 272 break; 273 default: 274 ret = -EINVAL; 275 } 276 break; 277 default: 278 ret = -EINVAL; 279 } 280 281 return ret; 282 } 283 284 static const struct iio_info magn_3d_info = { 285 .read_raw = &magn_3d_read_raw, 286 .write_raw = &magn_3d_write_raw, 287 }; 288 289 /* Function to push data to buffer */ 290 static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data) 291 { 292 dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); 293 iio_push_to_buffers(indio_dev, data); 294 } 295 296 /* Callback handler to send event after all samples are received and captured */ 297 static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev, 298 unsigned usage_id, 299 void *priv) 300 { 301 struct iio_dev *indio_dev = platform_get_drvdata(priv); 302 struct magn_3d_state *magn_state = iio_priv(indio_dev); 303 304 dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n"); 305 if (atomic_read(&magn_state->magn_flux_attributes.data_ready)) 306 hid_sensor_push_data(indio_dev, magn_state->iio_vals); 307 308 return 0; 309 } 310 311 /* Capture samples in local storage */ 312 static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev, 313 unsigned usage_id, 314 size_t raw_len, char *raw_data, 315 void *priv) 316 { 317 struct iio_dev *indio_dev = platform_get_drvdata(priv); 318 struct magn_3d_state *magn_state = iio_priv(indio_dev); 319 int offset; 320 int ret = 0; 321 u32 *iio_val = NULL; 322 323 switch (usage_id) { 324 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS: 325 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS: 326 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS: 327 offset = (usage_id - HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS) 328 + CHANNEL_SCAN_INDEX_X; 329 break; 330 case HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH: 331 case HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH: 332 case HID_USAGE_SENSOR_ORIENT_MAGN_NORTH: 333 case HID_USAGE_SENSOR_ORIENT_TRUE_NORTH: 334 offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH) 335 + CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP; 336 break; 337 default: 338 return -EINVAL; 339 } 340 341 iio_val = magn_state->magn_val_addr[offset]; 342 343 if (iio_val != NULL) 344 *iio_val = *((u32 *)raw_data); 345 else 346 ret = -EINVAL; 347 348 return ret; 349 } 350 351 /* Parse report which is specific to an usage id*/ 352 static int magn_3d_parse_report(struct platform_device *pdev, 353 struct hid_sensor_hub_device *hsdev, 354 struct iio_chan_spec **channels, 355 int *chan_count, 356 unsigned usage_id, 357 struct magn_3d_state *st) 358 { 359 int i; 360 int attr_count = 0; 361 struct iio_chan_spec *_channels; 362 363 /* Scan for each usage attribute supported */ 364 for (i = 0; i < MAGN_3D_CHANNEL_MAX; i++) { 365 int status; 366 u32 address = magn_3d_addresses[i]; 367 368 /* Check if usage attribute exists in the sensor hub device */ 369 status = sensor_hub_input_get_attribute_info(hsdev, 370 HID_INPUT_REPORT, 371 usage_id, 372 address, 373 &(st->magn[i])); 374 if (!status) 375 attr_count++; 376 } 377 378 if (attr_count <= 0) { 379 dev_err(&pdev->dev, 380 "failed to find any supported usage attributes in report\n"); 381 return -EINVAL; 382 } 383 384 dev_dbg(&pdev->dev, "magn_3d Found %d usage attributes\n", 385 attr_count); 386 dev_dbg(&pdev->dev, "magn_3d X: %x:%x Y: %x:%x Z: %x:%x\n", 387 st->magn[0].index, 388 st->magn[0].report_id, 389 st->magn[1].index, st->magn[1].report_id, 390 st->magn[2].index, st->magn[2].report_id); 391 392 /* Setup IIO channel array */ 393 _channels = devm_kcalloc(&pdev->dev, attr_count, 394 sizeof(struct iio_chan_spec), 395 GFP_KERNEL); 396 if (!_channels) { 397 dev_err(&pdev->dev, 398 "failed to allocate space for iio channels\n"); 399 return -ENOMEM; 400 } 401 402 st->iio_vals = devm_kcalloc(&pdev->dev, attr_count, 403 sizeof(u32), 404 GFP_KERNEL); 405 if (!st->iio_vals) { 406 dev_err(&pdev->dev, 407 "failed to allocate space for iio values array\n"); 408 return -ENOMEM; 409 } 410 411 for (i = 0, *chan_count = 0; 412 i < MAGN_3D_CHANNEL_MAX && *chan_count < attr_count; 413 i++){ 414 if (st->magn[i].index >= 0) { 415 /* Setup IIO channel struct */ 416 (_channels[*chan_count]) = magn_3d_channels[i]; 417 (_channels[*chan_count]).scan_index = *chan_count; 418 (_channels[*chan_count]).address = i; 419 420 /* Set magn_val_addr to iio value address */ 421 st->magn_val_addr[i] = &(st->iio_vals[*chan_count]); 422 magn_3d_adjust_channel_bit_mask(_channels, 423 *chan_count, 424 st->magn[i].size); 425 (*chan_count)++; 426 } 427 } 428 429 if (*chan_count <= 0) { 430 dev_err(&pdev->dev, 431 "failed to find any magnetic channels setup\n"); 432 return -EINVAL; 433 } 434 435 *channels = _channels; 436 437 dev_dbg(&pdev->dev, "magn_3d Setup %d IIO channels\n", 438 *chan_count); 439 440 st->magn_flux_attr.scale_precision = hid_sensor_format_scale( 441 HID_USAGE_SENSOR_COMPASS_3D, 442 &st->magn[CHANNEL_SCAN_INDEX_X], 443 &st->magn_flux_attr.scale_pre_decml, 444 &st->magn_flux_attr.scale_post_decml); 445 st->rot_attr.scale_precision 446 = hid_sensor_format_scale( 447 HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, 448 &st->magn[CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP], 449 &st->rot_attr.scale_pre_decml, 450 &st->rot_attr.scale_post_decml); 451 452 /* Set Sensitivity field ids, when there is no individual modifier */ 453 if (st->magn_flux_attributes.sensitivity.index < 0) { 454 sensor_hub_input_get_attribute_info(hsdev, 455 HID_FEATURE_REPORT, usage_id, 456 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 457 HID_USAGE_SENSOR_DATA_ORIENTATION, 458 &st->magn_flux_attributes.sensitivity); 459 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 460 st->magn_flux_attributes.sensitivity.index, 461 st->magn_flux_attributes.sensitivity.report_id); 462 } 463 if (st->magn_flux_attributes.sensitivity.index < 0) { 464 sensor_hub_input_get_attribute_info(hsdev, 465 HID_FEATURE_REPORT, usage_id, 466 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 467 HID_USAGE_SENSOR_ORIENT_MAGN_FLUX, 468 &st->magn_flux_attributes.sensitivity); 469 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 470 st->magn_flux_attributes.sensitivity.index, 471 st->magn_flux_attributes.sensitivity.report_id); 472 } 473 if (st->rot_attributes.sensitivity.index < 0) { 474 sensor_hub_input_get_attribute_info(hsdev, 475 HID_FEATURE_REPORT, usage_id, 476 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 477 HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, 478 &st->rot_attributes.sensitivity); 479 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 480 st->rot_attributes.sensitivity.index, 481 st->rot_attributes.sensitivity.report_id); 482 } 483 484 return 0; 485 } 486 487 /* Function to initialize the processing for usage id */ 488 static int hid_magn_3d_probe(struct platform_device *pdev) 489 { 490 int ret = 0; 491 static char *name = "magn_3d"; 492 struct iio_dev *indio_dev; 493 struct magn_3d_state *magn_state; 494 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 495 struct iio_chan_spec *channels; 496 int chan_count = 0; 497 498 indio_dev = devm_iio_device_alloc(&pdev->dev, 499 sizeof(struct magn_3d_state)); 500 if (indio_dev == NULL) 501 return -ENOMEM; 502 503 platform_set_drvdata(pdev, indio_dev); 504 505 magn_state = iio_priv(indio_dev); 506 magn_state->magn_flux_attributes.hsdev = hsdev; 507 magn_state->magn_flux_attributes.pdev = pdev; 508 509 ret = hid_sensor_parse_common_attributes(hsdev, 510 HID_USAGE_SENSOR_COMPASS_3D, 511 &magn_state->magn_flux_attributes); 512 if (ret) { 513 dev_err(&pdev->dev, "failed to setup common attributes\n"); 514 return ret; 515 } 516 magn_state->rot_attributes = magn_state->magn_flux_attributes; 517 518 ret = magn_3d_parse_report(pdev, hsdev, 519 &channels, &chan_count, 520 HID_USAGE_SENSOR_COMPASS_3D, magn_state); 521 if (ret) { 522 dev_err(&pdev->dev, "failed to parse report\n"); 523 return ret; 524 } 525 526 indio_dev->channels = channels; 527 indio_dev->num_channels = chan_count; 528 indio_dev->dev.parent = &pdev->dev; 529 indio_dev->info = &magn_3d_info; 530 indio_dev->name = name; 531 indio_dev->modes = INDIO_DIRECT_MODE; 532 533 ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, 534 NULL, NULL); 535 if (ret) { 536 dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); 537 return ret; 538 } 539 atomic_set(&magn_state->magn_flux_attributes.data_ready, 0); 540 ret = hid_sensor_setup_trigger(indio_dev, name, 541 &magn_state->magn_flux_attributes); 542 if (ret < 0) { 543 dev_err(&pdev->dev, "trigger setup failed\n"); 544 goto error_unreg_buffer_funcs; 545 } 546 547 ret = iio_device_register(indio_dev); 548 if (ret) { 549 dev_err(&pdev->dev, "device register failed\n"); 550 goto error_remove_trigger; 551 } 552 553 magn_state->callbacks.send_event = magn_3d_proc_event; 554 magn_state->callbacks.capture_sample = magn_3d_capture_sample; 555 magn_state->callbacks.pdev = pdev; 556 ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D, 557 &magn_state->callbacks); 558 if (ret < 0) { 559 dev_err(&pdev->dev, "callback reg failed\n"); 560 goto error_iio_unreg; 561 } 562 563 return ret; 564 565 error_iio_unreg: 566 iio_device_unregister(indio_dev); 567 error_remove_trigger: 568 hid_sensor_remove_trigger(&magn_state->magn_flux_attributes); 569 error_unreg_buffer_funcs: 570 iio_triggered_buffer_cleanup(indio_dev); 571 return ret; 572 } 573 574 /* Function to deinitialize the processing for usage id */ 575 static int hid_magn_3d_remove(struct platform_device *pdev) 576 { 577 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 578 struct iio_dev *indio_dev = platform_get_drvdata(pdev); 579 struct magn_3d_state *magn_state = iio_priv(indio_dev); 580 581 sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D); 582 iio_device_unregister(indio_dev); 583 hid_sensor_remove_trigger(&magn_state->magn_flux_attributes); 584 iio_triggered_buffer_cleanup(indio_dev); 585 586 return 0; 587 } 588 589 static const struct platform_device_id hid_magn_3d_ids[] = { 590 { 591 /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ 592 .name = "HID-SENSOR-200083", 593 }, 594 { /* sentinel */ } 595 }; 596 MODULE_DEVICE_TABLE(platform, hid_magn_3d_ids); 597 598 static struct platform_driver hid_magn_3d_platform_driver = { 599 .id_table = hid_magn_3d_ids, 600 .driver = { 601 .name = KBUILD_MODNAME, 602 .pm = &hid_sensor_pm_ops, 603 }, 604 .probe = hid_magn_3d_probe, 605 .remove = hid_magn_3d_remove, 606 }; 607 module_platform_driver(hid_magn_3d_platform_driver); 608 609 MODULE_DESCRIPTION("HID Sensor Magnetometer 3D"); 610 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 611 MODULE_LICENSE("GPL"); 612