drivers/iio/magnetometer/st_magn_core.c

   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
  57 static const struct iio_mount_matrix *
  58 st_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
  66 static 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
  71 static 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
  90 static 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
 109 static 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
 128 static 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
 144 static 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                 },
 309                 .ch = (struct iio_chan_spec *)st_magn_2_16bit_channels,
 310                 .odr = {
 311                         .addr = 0x20,
 312                         .mask = 0x1c,
 313                         .odr_avl = {
 314                                 { .hz = 1, .value = 0x00 },
 315                                 { .hz = 2, .value = 0x01 },
 316                                 { .hz = 3, .value = 0x02 },
 317                                 { .hz = 5, .value = 0x03 },
 318                                 { .hz = 10, .value = 0x04 },
 319                                 { .hz = 20, .value = 0x05 },
 320                                 { .hz = 40, .value = 0x06 },
 321                                 { .hz = 80, .value = 0x07 },
 322                         },
 323                 },
 324                 .pw = {
 325                         .addr = 0x22,
 326                         .mask = 0x03,
 327                         .value_on = 0x00,
 328                         .value_off = 0x03,
 329                 },
 330                 .fs = {
 331                         .addr = 0x21,
 332                         .mask = 0x60,
 333                         .fs_avl = {
 334                                 [0] = {
 335                                         .num = ST_MAGN_FS_AVL_4000MG,
 336                                         .value = 0x00,
 337                                         .gain = 146,
 338                                 },
 339                                 [1] = {
 340                                         .num = ST_MAGN_FS_AVL_8000MG,
 341                                         .value = 0x01,
 342                                         .gain = 292,
 343                                 },
 344                                 [2] = {
 345                                         .num = ST_MAGN_FS_AVL_12000MG,
 346                                         .value = 0x02,
 347                                         .gain = 438,
 348                                 },
 349                                 [3] = {
 350                                         .num = ST_MAGN_FS_AVL_16000MG,
 351                                         .value = 0x03,
 352                                         .gain = 584,
 353                                 },
 354                         },
 355                 },
 356                 .bdu = {
 357                         .addr = 0x24,
 358                         .mask = 0x40,
 359                 },
 360                 .drdy_irq = {
 361                         /* drdy line is routed drdy pin */
 362                         .stat_drdy = {
 363                                 .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
 364                                 .mask = 0x07,
 365                         },
 366                 },
 367                 .sim = {
 368                         .addr = 0x22,
 369                         .value = BIT(2),
 370                 },
 371                 .multi_read_bit = true,
 372                 .bootime = 2,
 373         },
 374         {
 375                 .wai = 0x40,
 376                 .wai_addr = 0x4f,
 377                 .sensors_supported = {
 378                         [0] = LSM303AGR_MAGN_DEV_NAME,
 379                         [1] = LIS2MDL_MAGN_DEV_NAME,
 380                         [2] = IIS2MDC_MAGN_DEV_NAME,
 381                 },
 382                 .ch = (struct iio_chan_spec *)st_magn_3_16bit_channels,
 383                 .odr = {
 384                         .addr = 0x60,
 385                         .mask = 0x0c,
 386                         .odr_avl = {
 387                                 { .hz = 10, .value = 0x00 },
 388                                 { .hz = 20, .value = 0x01 },
 389                                 { .hz = 50, .value = 0x02 },
 390                                 { .hz = 100, .value = 0x03 },
 391                         },
 392                 },
 393                 .pw = {
 394                         .addr = 0x60,
 395                         .mask = 0x03,
 396                         .value_on = 0x00,
 397                         .value_off = 0x03,
 398                 },
 399                 .fs = {
 400                         .fs_avl = {
 401                                 [0] = {
 402                                         .num = ST_MAGN_FS_AVL_15000MG,
 403                                         .gain = 1500,
 404                                 },
 405                         },
 406                 },
 407                 .bdu = {
 408                         .addr = 0x62,
 409                         .mask = 0x10,
 410                 },
 411                 .drdy_irq = {
 412                         .int1 = {
 413                                 .addr = 0x62,
 414                                 .mask = 0x01,
 415                         },
 416                         .stat_drdy = {
 417                                 .addr = 0x67,
 418                                 .mask = 0x07,
 419                         },
 420                 },
 421                 .multi_read_bit = false,
 422                 .bootime = 2,
 423         },
 424         {
 425                 .wai = 0x49,
 426                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 427                 .sensors_supported = {
 428                         [0] = LSM9DS0_IMU_DEV_NAME,
 429                 },
 430                 .ch = (struct iio_chan_spec *)st_magn_4_16bit_channels,
 431                 .odr = {
 432                         .addr = 0x24,
 433                         .mask = GENMASK(4, 2),
 434                         .odr_avl = {
 435                                 { 3, 0x00, },
 436                                 { 6, 0x01, },
 437                                 { 12, 0x02, },
 438                                 { 25, 0x03, },
 439                                 { 50, 0x04, },
 440                                 { 100, 0x05, },
 441                         },
 442                 },
 443                 .pw = {
 444                         .addr = 0x26,
 445                         .mask = GENMASK(1, 0),
 446                         .value_on = 0x00,
 447                         .value_off = 0x03,
 448                 },
 449                 .fs = {
 450                         .addr = 0x25,
 451                         .mask = GENMASK(6, 5),
 452                         .fs_avl = {
 453                                 [0] = {
 454                                         .num = ST_MAGN_FS_AVL_2000MG,
 455                                         .value = 0x00,
 456                                         .gain = 73,
 457                                 },
 458                                 [1] = {
 459                                         .num = ST_MAGN_FS_AVL_4000MG,
 460                                         .value = 0x01,
 461                                         .gain = 146,
 462                                 },
 463                                 [2] = {
 464                                         .num = ST_MAGN_FS_AVL_8000MG,
 465                                         .value = 0x02,
 466                                         .gain = 292,
 467                                 },
 468                                 [3] = {
 469                                         .num = ST_MAGN_FS_AVL_12000MG,
 470                                         .value = 0x03,
 471                                         .gain = 438,
 472                                 },
 473                         },
 474                 },
 475                 .bdu = {
 476                         .addr = 0x20,
 477                         .mask = BIT(3),
 478                 },
 479                 .drdy_irq = {
 480                         .int1 = {
 481                                 .addr = 0x22,
 482                                 .mask = BIT(1),
 483                         },
 484                         .int2 = {
 485                                 .addr = 0x23,
 486                                 .mask = BIT(2),
 487                         },
 488                         .stat_drdy = {
 489                                 .addr = 0x07,
 490                                 .mask = GENMASK(2, 0),
 491                         },
 492                 },
 493                 .sim = {
 494                         .addr = 0x21,
 495                         .value = BIT(0),
 496                 },
 497                 .multi_read_bit = true,
 498                 .bootime = 2,
 499         },
 500 };
 501
 502 /* Default magn DRDY is available on INT2 pin */
 503 static const struct st_sensors_platform_data default_magn_pdata = {
 504         .drdy_int_pin = 2,
 505 };
 506
 507 static int st_magn_read_raw(struct iio_dev *indio_dev,
 508                         struct iio_chan_spec const *ch, int *val,
 509                                                         int *val2, long mask)
 510 {
 511         int err;
 512         struct st_sensor_data *mdata = iio_priv(indio_dev);
 513
 514         switch (mask) {
 515         case IIO_CHAN_INFO_RAW:
 516                 err = st_sensors_read_info_raw(indio_dev, ch, val);
 517                 if (err < 0)
 518                         goto read_error;
 519
 520                 return IIO_VAL_INT;
 521         case IIO_CHAN_INFO_SCALE:
 522                 *val = 0;
 523                 if ((ch->scan_index == ST_SENSORS_SCAN_Z) &&
 524                                         (mdata->current_fullscale->gain2 != 0))
 525                         *val2 = mdata->current_fullscale->gain2;
 526                 else
 527                         *val2 = mdata->current_fullscale->gain;
 528                 return IIO_VAL_INT_PLUS_MICRO;
 529         case IIO_CHAN_INFO_SAMP_FREQ:
 530                 *val = mdata->odr;
 531                 return IIO_VAL_INT;
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536 read_error:
 537         return err;
 538 }
 539
 540 static int st_magn_write_raw(struct iio_dev *indio_dev,
 541                 struct iio_chan_spec const *chan, int val, int val2, long mask)
 542 {
 543         int err;
 544
 545         switch (mask) {
 546         case IIO_CHAN_INFO_SCALE:
 547                 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
 548                 break;
 549         case IIO_CHAN_INFO_SAMP_FREQ:
 550                 if (val2)
 551                         return -EINVAL;
 552                 mutex_lock(&indio_dev->mlock);
 553                 err = st_sensors_set_odr(indio_dev, val);
 554                 mutex_unlock(&indio_dev->mlock);
 555                 return err;
 556         default:
 557                 err = -EINVAL;
 558         }
 559
 560         return err;
 561 }
 562
 563 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
 564 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available);
 565
 566 static struct attribute *st_magn_attributes[] = {
 567         &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 568         &iio_dev_attr_in_magn_scale_available.dev_attr.attr,
 569         NULL,
 570 };
 571
 572 static const struct attribute_group st_magn_attribute_group = {
 573         .attrs = st_magn_attributes,
 574 };
 575
 576 static const struct iio_info magn_info = {
 577         .attrs = &st_magn_attribute_group,
 578         .read_raw = &st_magn_read_raw,
 579         .write_raw = &st_magn_write_raw,
 580         .debugfs_reg_access = &st_sensors_debugfs_reg_access,
 581 };
 582
 583 #ifdef CONFIG_IIO_TRIGGER
 584 static const struct iio_trigger_ops st_magn_trigger_ops = {
 585         .set_trigger_state = ST_MAGN_TRIGGER_SET_STATE,
 586         .validate_device = st_sensors_validate_device,
 587 };
 588 #define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops)
 589 #else
 590 #define ST_MAGN_TRIGGER_OPS NULL
 591 #endif
 592
 593 /*
 594  * st_magn_get_settings() - get sensor settings from device name
 595  * @name: device name buffer reference.
 596  *
 597  * Return: valid reference on success, NULL otherwise.
 598  */
 599 const struct st_sensor_settings *st_magn_get_settings(const char *name)
 600 {
 601         int index = st_sensors_get_settings_index(name,
 602                                         st_magn_sensors_settings,
 603                                         ARRAY_SIZE(st_magn_sensors_settings));
 604         if (index < 0)
 605                 return NULL;
 606
 607         return &st_magn_sensors_settings[index];
 608 }
 609 EXPORT_SYMBOL_NS(st_magn_get_settings, IIO_ST_SENSORS);
 610
 611 int st_magn_common_probe(struct iio_dev *indio_dev)
 612 {
 613         struct st_sensor_data *mdata = iio_priv(indio_dev);
 614         struct device *parent = indio_dev->dev.parent;
 615         struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
 616         int err;
 617
 618         indio_dev->modes = INDIO_DIRECT_MODE;
 619         indio_dev->info = &magn_info;
 620
 621         err = st_sensors_verify_id(indio_dev);
 622         if (err < 0)
 623                 return err;
 624
 625         mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS;
 626         indio_dev->channels = mdata->sensor_settings->ch;
 627         indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 628
 629         err = iio_read_mount_matrix(parent, &mdata->mount_matrix);
 630         if (err)
 631                 return err;
 632
 633         mdata->current_fullscale = &mdata->sensor_settings->fs.fs_avl[0];
 634         mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz;
 635
 636         if (!pdata)
 637                 pdata = (struct st_sensors_platform_data *)&default_magn_pdata;
 638
 639         err = st_sensors_init_sensor(indio_dev, pdata);
 640         if (err < 0)
 641                 return err;
 642
 643         err = st_magn_allocate_ring(indio_dev);
 644         if (err < 0)
 645                 return err;
 646
 647         if (mdata->irq > 0) {
 648                 err = st_sensors_allocate_trigger(indio_dev,
 649                                                 ST_MAGN_TRIGGER_OPS);
 650                 if (err < 0)
 651                         return err;
 652         }
 653
 654         return devm_iio_device_register(parent, indio_dev);
 655 }
 656 EXPORT_SYMBOL_NS(st_magn_common_probe, IIO_ST_SENSORS);
 657
 658 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 659 MODULE_DESCRIPTION("STMicroelectronics magnetometers driver");
 660 MODULE_LICENSE("GPL v2");
 661 MODULE_IMPORT_NS(IIO_ST_SENSORS);