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 0: 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 .driver_module = THIS_MODULE, 286 .read_raw = &magn_3d_read_raw, 287 .write_raw = &magn_3d_write_raw, 288 }; 289 290 /* Function to push data to buffer */ 291 static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data) 292 { 293 dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); 294 iio_push_to_buffers(indio_dev, data); 295 } 296 297 /* Callback handler to send event after all samples are received and captured */ 298 static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev, 299 unsigned usage_id, 300 void *priv) 301 { 302 struct iio_dev *indio_dev = platform_get_drvdata(priv); 303 struct magn_3d_state *magn_state = iio_priv(indio_dev); 304 305 dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n"); 306 if (atomic_read(&magn_state->magn_flux_attributes.data_ready)) 307 hid_sensor_push_data(indio_dev, magn_state->iio_vals); 308 309 return 0; 310 } 311 312 /* Capture samples in local storage */ 313 static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev, 314 unsigned usage_id, 315 size_t raw_len, char *raw_data, 316 void *priv) 317 { 318 struct iio_dev *indio_dev = platform_get_drvdata(priv); 319 struct magn_3d_state *magn_state = iio_priv(indio_dev); 320 int offset; 321 int ret = 0; 322 u32 *iio_val = NULL; 323 324 switch (usage_id) { 325 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS: 326 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS: 327 case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS: 328 offset = (usage_id - HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS) 329 + CHANNEL_SCAN_INDEX_X; 330 break; 331 case HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH: 332 case HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH: 333 case HID_USAGE_SENSOR_ORIENT_MAGN_NORTH: 334 case HID_USAGE_SENSOR_ORIENT_TRUE_NORTH: 335 offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH) 336 + CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP; 337 break; 338 default: 339 return -EINVAL; 340 } 341 342 iio_val = magn_state->magn_val_addr[offset]; 343 344 if (iio_val != NULL) 345 *iio_val = *((u32 *)raw_data); 346 else 347 ret = -EINVAL; 348 349 return ret; 350 } 351 352 /* Parse report which is specific to an usage id*/ 353 static int magn_3d_parse_report(struct platform_device *pdev, 354 struct hid_sensor_hub_device *hsdev, 355 struct iio_chan_spec **channels, 356 int *chan_count, 357 unsigned usage_id, 358 struct magn_3d_state *st) 359 { 360 int i; 361 int attr_count = 0; 362 struct iio_chan_spec *_channels; 363 364 /* Scan for each usage attribute supported */ 365 for (i = 0; i < MAGN_3D_CHANNEL_MAX; i++) { 366 int status; 367 u32 address = magn_3d_addresses[i]; 368 369 /* Check if usage attribute exists in the sensor hub device */ 370 status = sensor_hub_input_get_attribute_info(hsdev, 371 HID_INPUT_REPORT, 372 usage_id, 373 address, 374 &(st->magn[i])); 375 if (!status) 376 attr_count++; 377 } 378 379 if (attr_count <= 0) { 380 dev_err(&pdev->dev, 381 "failed to find any supported usage attributes in report\n"); 382 return -EINVAL; 383 } 384 385 dev_dbg(&pdev->dev, "magn_3d Found %d usage attributes\n", 386 attr_count); 387 dev_dbg(&pdev->dev, "magn_3d X: %x:%x Y: %x:%x Z: %x:%x\n", 388 st->magn[0].index, 389 st->magn[0].report_id, 390 st->magn[1].index, st->magn[1].report_id, 391 st->magn[2].index, st->magn[2].report_id); 392 393 /* Setup IIO channel array */ 394 _channels = devm_kcalloc(&pdev->dev, attr_count, 395 sizeof(struct iio_chan_spec), 396 GFP_KERNEL); 397 if (!_channels) { 398 dev_err(&pdev->dev, 399 "failed to allocate space for iio channels\n"); 400 return -ENOMEM; 401 } 402 403 st->iio_vals = devm_kcalloc(&pdev->dev, attr_count, 404 sizeof(u32), 405 GFP_KERNEL); 406 if (!st->iio_vals) { 407 dev_err(&pdev->dev, 408 "failed to allocate space for iio values array\n"); 409 return -ENOMEM; 410 } 411 412 for (i = 0, *chan_count = 0; 413 i < MAGN_3D_CHANNEL_MAX && *chan_count < attr_count; 414 i++){ 415 if (st->magn[i].index >= 0) { 416 /* Setup IIO channel struct */ 417 (_channels[*chan_count]) = magn_3d_channels[i]; 418 (_channels[*chan_count]).scan_index = *chan_count; 419 (_channels[*chan_count]).address = i; 420 421 /* Set magn_val_addr to iio value address */ 422 st->magn_val_addr[i] = &(st->iio_vals[*chan_count]); 423 magn_3d_adjust_channel_bit_mask(_channels, 424 *chan_count, 425 st->magn[i].size); 426 (*chan_count)++; 427 } 428 } 429 430 if (*chan_count <= 0) { 431 dev_err(&pdev->dev, 432 "failed to find any magnetic channels setup\n"); 433 return -EINVAL; 434 } 435 436 *channels = _channels; 437 438 dev_dbg(&pdev->dev, "magn_3d Setup %d IIO channels\n", 439 *chan_count); 440 441 st->magn_flux_attr.scale_precision = hid_sensor_format_scale( 442 HID_USAGE_SENSOR_COMPASS_3D, 443 &st->magn[CHANNEL_SCAN_INDEX_X], 444 &st->magn_flux_attr.scale_pre_decml, 445 &st->magn_flux_attr.scale_post_decml); 446 st->rot_attr.scale_precision 447 = hid_sensor_format_scale( 448 HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, 449 &st->magn[CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP], 450 &st->rot_attr.scale_pre_decml, 451 &st->rot_attr.scale_post_decml); 452 453 /* Set Sensitivity field ids, when there is no individual modifier */ 454 if (st->magn_flux_attributes.sensitivity.index < 0) { 455 sensor_hub_input_get_attribute_info(hsdev, 456 HID_FEATURE_REPORT, usage_id, 457 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 458 HID_USAGE_SENSOR_DATA_ORIENTATION, 459 &st->magn_flux_attributes.sensitivity); 460 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 461 st->magn_flux_attributes.sensitivity.index, 462 st->magn_flux_attributes.sensitivity.report_id); 463 } 464 if (st->magn_flux_attributes.sensitivity.index < 0) { 465 sensor_hub_input_get_attribute_info(hsdev, 466 HID_FEATURE_REPORT, usage_id, 467 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 468 HID_USAGE_SENSOR_ORIENT_MAGN_FLUX, 469 &st->magn_flux_attributes.sensitivity); 470 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 471 st->magn_flux_attributes.sensitivity.index, 472 st->magn_flux_attributes.sensitivity.report_id); 473 } 474 if (st->rot_attributes.sensitivity.index < 0) { 475 sensor_hub_input_get_attribute_info(hsdev, 476 HID_FEATURE_REPORT, usage_id, 477 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | 478 HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, 479 &st->rot_attributes.sensitivity); 480 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", 481 st->rot_attributes.sensitivity.index, 482 st->rot_attributes.sensitivity.report_id); 483 } 484 485 return 0; 486 } 487 488 /* Function to initialize the processing for usage id */ 489 static int hid_magn_3d_probe(struct platform_device *pdev) 490 { 491 int ret = 0; 492 static char *name = "magn_3d"; 493 struct iio_dev *indio_dev; 494 struct magn_3d_state *magn_state; 495 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 496 struct iio_chan_spec *channels; 497 int chan_count = 0; 498 499 indio_dev = devm_iio_device_alloc(&pdev->dev, 500 sizeof(struct magn_3d_state)); 501 if (indio_dev == NULL) 502 return -ENOMEM; 503 504 platform_set_drvdata(pdev, indio_dev); 505 506 magn_state = iio_priv(indio_dev); 507 magn_state->magn_flux_attributes.hsdev = hsdev; 508 magn_state->magn_flux_attributes.pdev = pdev; 509 510 ret = hid_sensor_parse_common_attributes(hsdev, 511 HID_USAGE_SENSOR_COMPASS_3D, 512 &magn_state->magn_flux_attributes); 513 if (ret) { 514 dev_err(&pdev->dev, "failed to setup common attributes\n"); 515 return ret; 516 } 517 magn_state->rot_attributes = magn_state->magn_flux_attributes; 518 519 ret = magn_3d_parse_report(pdev, hsdev, 520 &channels, &chan_count, 521 HID_USAGE_SENSOR_COMPASS_3D, magn_state); 522 if (ret) { 523 dev_err(&pdev->dev, "failed to parse report\n"); 524 return ret; 525 } 526 527 indio_dev->channels = channels; 528 indio_dev->num_channels = chan_count; 529 indio_dev->dev.parent = &pdev->dev; 530 indio_dev->info = &magn_3d_info; 531 indio_dev->name = name; 532 indio_dev->modes = INDIO_DIRECT_MODE; 533 534 ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, 535 NULL, NULL); 536 if (ret) { 537 dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); 538 return ret; 539 } 540 atomic_set(&magn_state->magn_flux_attributes.data_ready, 0); 541 ret = hid_sensor_setup_trigger(indio_dev, name, 542 &magn_state->magn_flux_attributes); 543 if (ret < 0) { 544 dev_err(&pdev->dev, "trigger setup failed\n"); 545 goto error_unreg_buffer_funcs; 546 } 547 548 ret = iio_device_register(indio_dev); 549 if (ret) { 550 dev_err(&pdev->dev, "device register failed\n"); 551 goto error_remove_trigger; 552 } 553 554 magn_state->callbacks.send_event = magn_3d_proc_event; 555 magn_state->callbacks.capture_sample = magn_3d_capture_sample; 556 magn_state->callbacks.pdev = pdev; 557 ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D, 558 &magn_state->callbacks); 559 if (ret < 0) { 560 dev_err(&pdev->dev, "callback reg failed\n"); 561 goto error_iio_unreg; 562 } 563 564 return ret; 565 566 error_iio_unreg: 567 iio_device_unregister(indio_dev); 568 error_remove_trigger: 569 hid_sensor_remove_trigger(&magn_state->magn_flux_attributes); 570 error_unreg_buffer_funcs: 571 iio_triggered_buffer_cleanup(indio_dev); 572 return ret; 573 } 574 575 /* Function to deinitialize the processing for usage id */ 576 static int hid_magn_3d_remove(struct platform_device *pdev) 577 { 578 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; 579 struct iio_dev *indio_dev = platform_get_drvdata(pdev); 580 struct magn_3d_state *magn_state = iio_priv(indio_dev); 581 582 sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D); 583 iio_device_unregister(indio_dev); 584 hid_sensor_remove_trigger(&magn_state->magn_flux_attributes); 585 iio_triggered_buffer_cleanup(indio_dev); 586 587 return 0; 588 } 589 590 static const struct platform_device_id hid_magn_3d_ids[] = { 591 { 592 /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ 593 .name = "HID-SENSOR-200083", 594 }, 595 { /* sentinel */ } 596 }; 597 MODULE_DEVICE_TABLE(platform, hid_magn_3d_ids); 598 599 static struct platform_driver hid_magn_3d_platform_driver = { 600 .id_table = hid_magn_3d_ids, 601 .driver = { 602 .name = KBUILD_MODNAME, 603 .pm = &hid_sensor_pm_ops, 604 }, 605 .probe = hid_magn_3d_probe, 606 .remove = hid_magn_3d_remove, 607 }; 608 module_platform_driver(hid_magn_3d_platform_driver); 609 610 MODULE_DESCRIPTION("HID Sensor Magnetometer 3D"); 611 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 612 MODULE_LICENSE("GPL"); 613