drivers/input/misc/bma150.c

   1 /*
   2  * Copyright (c) 2011 Bosch Sensortec GmbH
   3  * Copyright (c) 2011 Unixphere
   4  *
   5  * This driver adds support for Bosch Sensortec's digital acceleration
   6  * sensors BMA150 and SMB380.
   7  * The SMB380 is fully compatible with BMA150 and only differs in packaging.
   8  *
   9  * The datasheet for the BMA150 chip can be found here:
  10  * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMA150-DS000-07.pdf
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/i2c.h>
  29 #include <linux/input.h>
  30 #include <linux/input-polldev.h>
  31 #include <linux/interrupt.h>
  32 #include <linux/delay.h>
  33 #include <linux/slab.h>
  34 #include <linux/pm.h>
  35 #include <linux/pm_runtime.h>
  36 #include <linux/bma150.h>
  37
  38 #define ABSMAX_ACC_VAL          0x01FF
  39 #define ABSMIN_ACC_VAL          -(ABSMAX_ACC_VAL)
  40
  41 /* Each axis is represented by a 2-byte data word */
  42 #define BMA150_XYZ_DATA_SIZE    6
  43
  44 /* Input poll interval in milliseconds */
  45 #define BMA150_POLL_INTERVAL    10
  46 #define BMA150_POLL_MAX         200
  47 #define BMA150_POLL_MIN         0
  48
  49 #define BMA150_MODE_NORMAL      0
  50 #define BMA150_MODE_SLEEP       2
  51 #define BMA150_MODE_WAKE_UP     3
  52
  53 /* Data register addresses */
  54 #define BMA150_DATA_0_REG       0x00
  55 #define BMA150_DATA_1_REG       0x01
  56 #define BMA150_DATA_2_REG       0x02
  57
  58 /* Control register addresses */
  59 #define BMA150_CTRL_0_REG       0x0A
  60 #define BMA150_CTRL_1_REG       0x0B
  61 #define BMA150_CTRL_2_REG       0x14
  62 #define BMA150_CTRL_3_REG       0x15
  63
  64 /* Configuration/Setting register addresses */
  65 #define BMA150_CFG_0_REG        0x0C
  66 #define BMA150_CFG_1_REG        0x0D
  67 #define BMA150_CFG_2_REG        0x0E
  68 #define BMA150_CFG_3_REG        0x0F
  69 #define BMA150_CFG_4_REG        0x10
  70 #define BMA150_CFG_5_REG        0x11
  71
  72 #define BMA150_CHIP_ID          2
  73 #define BMA150_CHIP_ID_REG      BMA150_DATA_0_REG
  74
  75 #define BMA150_ACC_X_LSB_REG    BMA150_DATA_2_REG
  76
  77 #define BMA150_SLEEP_POS        0
  78 #define BMA150_SLEEP_MSK        0x01
  79 #define BMA150_SLEEP_REG        BMA150_CTRL_0_REG
  80
  81 #define BMA150_BANDWIDTH_POS    0
  82 #define BMA150_BANDWIDTH_MSK    0x07
  83 #define BMA150_BANDWIDTH_REG    BMA150_CTRL_2_REG
  84
  85 #define BMA150_RANGE_POS        3
  86 #define BMA150_RANGE_MSK        0x18
  87 #define BMA150_RANGE_REG        BMA150_CTRL_2_REG
  88
  89 #define BMA150_WAKE_UP_POS      0
  90 #define BMA150_WAKE_UP_MSK      0x01
  91 #define BMA150_WAKE_UP_REG      BMA150_CTRL_3_REG
  92
  93 #define BMA150_SW_RES_POS       1
  94 #define BMA150_SW_RES_MSK       0x02
  95 #define BMA150_SW_RES_REG       BMA150_CTRL_0_REG
  96
  97 /* Any-motion interrupt register fields */
  98 #define BMA150_ANY_MOTION_EN_POS        6
  99 #define BMA150_ANY_MOTION_EN_MSK        0x40
 100 #define BMA150_ANY_MOTION_EN_REG        BMA150_CTRL_1_REG
 101
 102 #define BMA150_ANY_MOTION_DUR_POS       6
 103 #define BMA150_ANY_MOTION_DUR_MSK       0xC0
 104 #define BMA150_ANY_MOTION_DUR_REG       BMA150_CFG_5_REG
 105
 106 #define BMA150_ANY_MOTION_THRES_REG     BMA150_CFG_4_REG
 107
 108 /* Advanced interrupt register fields */
 109 #define BMA150_ADV_INT_EN_POS           6
 110 #define BMA150_ADV_INT_EN_MSK           0x40
 111 #define BMA150_ADV_INT_EN_REG           BMA150_CTRL_3_REG
 112
 113 /* High-G interrupt register fields */
 114 #define BMA150_HIGH_G_EN_POS            1
 115 #define BMA150_HIGH_G_EN_MSK            0x02
 116 #define BMA150_HIGH_G_EN_REG            BMA150_CTRL_1_REG
 117
 118 #define BMA150_HIGH_G_HYST_POS          3
 119 #define BMA150_HIGH_G_HYST_MSK          0x38
 120 #define BMA150_HIGH_G_HYST_REG          BMA150_CFG_5_REG
 121
 122 #define BMA150_HIGH_G_DUR_REG           BMA150_CFG_3_REG
 123 #define BMA150_HIGH_G_THRES_REG         BMA150_CFG_2_REG
 124
 125 /* Low-G interrupt register fields */
 126 #define BMA150_LOW_G_EN_POS             0
 127 #define BMA150_LOW_G_EN_MSK             0x01
 128 #define BMA150_LOW_G_EN_REG             BMA150_CTRL_1_REG
 129
 130 #define BMA150_LOW_G_HYST_POS           0
 131 #define BMA150_LOW_G_HYST_MSK           0x07
 132 #define BMA150_LOW_G_HYST_REG           BMA150_CFG_5_REG
 133
 134 #define BMA150_LOW_G_DUR_REG            BMA150_CFG_1_REG
 135 #define BMA150_LOW_G_THRES_REG          BMA150_CFG_0_REG
 136
 137 struct bma150_data {
 138         struct i2c_client *client;
 139         struct input_polled_dev *input_polled;
 140         struct input_dev *input;
 141         u8 mode;
 142 };
 143
 144 /*
 145  * The settings for the given range, bandwidth and interrupt features
 146  * are stated and verified by Bosch Sensortec where they are configured
 147  * to provide a generic sensitivity performance.
 148  */
 149 static const struct bma150_cfg default_cfg = {
 150         .any_motion_int = 1,
 151         .hg_int = 1,
 152         .lg_int = 1,
 153         .any_motion_dur = 0,
 154         .any_motion_thres = 0,
 155         .hg_hyst = 0,
 156         .hg_dur = 150,
 157         .hg_thres = 160,
 158         .lg_hyst = 0,
 159         .lg_dur = 150,
 160         .lg_thres = 20,
 161         .range = BMA150_RANGE_2G,
 162         .bandwidth = BMA150_BW_50HZ
 163 };
 164
 165 static int bma150_write_byte(struct i2c_client *client, u8 reg, u8 val)
 166 {
 167         s32 ret;
 168
 169         /* As per specification, disable irq in between register writes */
 170         if (client->irq)
 171                 disable_irq_nosync(client->irq);
 172
 173         ret = i2c_smbus_write_byte_data(client, reg, val);
 174
 175         if (client->irq)
 176                 enable_irq(client->irq);
 177
 178         return ret;
 179 }
 180
 181 static int bma150_set_reg_bits(struct i2c_client *client,
 182                                         int val, int shift, u8 mask, u8 reg)
 183 {
 184         int data;
 185
 186         data = i2c_smbus_read_byte_data(client, reg);
 187         if (data < 0)
 188                 return data;
 189
 190         data = (data & ~mask) | ((val << shift) & mask);
 191         return bma150_write_byte(client, reg, data);
 192 }
 193
 194 static int bma150_set_mode(struct bma150_data *bma150, u8 mode)
 195 {
 196         int error;
 197
 198         error = bma150_set_reg_bits(bma150->client, mode, BMA150_WAKE_UP_POS,
 199                                 BMA150_WAKE_UP_MSK, BMA150_WAKE_UP_REG);
 200         if (error)
 201                 return error;
 202
 203         error = bma150_set_reg_bits(bma150->client, mode, BMA150_SLEEP_POS,
 204                                 BMA150_SLEEP_MSK, BMA150_SLEEP_REG);
 205         if (error)
 206                 return error;
 207
 208         if (mode == BMA150_MODE_NORMAL)
 209                 usleep_range(2000, 2100);
 210
 211         bma150->mode = mode;
 212         return 0;
 213 }
 214
 215 static int bma150_soft_reset(struct bma150_data *bma150)
 216 {
 217         int error;
 218
 219         error = bma150_set_reg_bits(bma150->client, 1, BMA150_SW_RES_POS,
 220                                 BMA150_SW_RES_MSK, BMA150_SW_RES_REG);
 221         if (error)
 222                 return error;
 223
 224         usleep_range(2000, 2100);
 225         return 0;
 226 }
 227
 228 static int bma150_set_range(struct bma150_data *bma150, u8 range)
 229 {
 230         return bma150_set_reg_bits(bma150->client, range, BMA150_RANGE_POS,
 231                                 BMA150_RANGE_MSK, BMA150_RANGE_REG);
 232 }
 233
 234 static int bma150_set_bandwidth(struct bma150_data *bma150, u8 bw)
 235 {
 236         return bma150_set_reg_bits(bma150->client, bw, BMA150_BANDWIDTH_POS,
 237                                 BMA150_BANDWIDTH_MSK, BMA150_BANDWIDTH_REG);
 238 }
 239
 240 static int bma150_set_low_g_interrupt(struct bma150_data *bma150,
 241                                         u8 enable, u8 hyst, u8 dur, u8 thres)
 242 {
 243         int error;
 244
 245         error = bma150_set_reg_bits(bma150->client, hyst,
 246                                 BMA150_LOW_G_HYST_POS, BMA150_LOW_G_HYST_MSK,
 247                                 BMA150_LOW_G_HYST_REG);
 248         if (error)
 249                 return error;
 250
 251         error = bma150_write_byte(bma150->client, BMA150_LOW_G_DUR_REG, dur);
 252         if (error)
 253                 return error;
 254
 255         error = bma150_write_byte(bma150->client, BMA150_LOW_G_THRES_REG, thres);
 256         if (error)
 257                 return error;
 258
 259         return bma150_set_reg_bits(bma150->client, !!enable,
 260                                 BMA150_LOW_G_EN_POS, BMA150_LOW_G_EN_MSK,
 261                                 BMA150_LOW_G_EN_REG);
 262 }
 263
 264 static int bma150_set_high_g_interrupt(struct bma150_data *bma150,
 265                                         u8 enable, u8 hyst, u8 dur, u8 thres)
 266 {
 267         int error;
 268
 269         error = bma150_set_reg_bits(bma150->client, hyst,
 270                                 BMA150_HIGH_G_HYST_POS, BMA150_HIGH_G_HYST_MSK,
 271                                 BMA150_HIGH_G_HYST_REG);
 272         if (error)
 273                 return error;
 274
 275         error = bma150_write_byte(bma150->client,
 276                                 BMA150_HIGH_G_DUR_REG, dur);
 277         if (error)
 278                 return error;
 279
 280         error = bma150_write_byte(bma150->client,
 281                                 BMA150_HIGH_G_THRES_REG, thres);
 282         if (error)
 283                 return error;
 284
 285         return bma150_set_reg_bits(bma150->client, !!enable,
 286                                 BMA150_HIGH_G_EN_POS, BMA150_HIGH_G_EN_MSK,
 287                                 BMA150_HIGH_G_EN_REG);
 288 }
 289
 290
 291 static int bma150_set_any_motion_interrupt(struct bma150_data *bma150,
 292                                                 u8 enable, u8 dur, u8 thres)
 293 {
 294         int error;
 295
 296         error = bma150_set_reg_bits(bma150->client, dur,
 297                                 BMA150_ANY_MOTION_DUR_POS,
 298                                 BMA150_ANY_MOTION_DUR_MSK,
 299                                 BMA150_ANY_MOTION_DUR_REG);
 300         if (error)
 301                 return error;
 302
 303         error = bma150_write_byte(bma150->client,
 304                                 BMA150_ANY_MOTION_THRES_REG, thres);
 305         if (error)
 306                 return error;
 307
 308         error = bma150_set_reg_bits(bma150->client, !!enable,
 309                                 BMA150_ADV_INT_EN_POS, BMA150_ADV_INT_EN_MSK,
 310                                 BMA150_ADV_INT_EN_REG);
 311         if (error)
 312                 return error;
 313
 314         return bma150_set_reg_bits(bma150->client, !!enable,
 315                                 BMA150_ANY_MOTION_EN_POS,
 316                                 BMA150_ANY_MOTION_EN_MSK,
 317                                 BMA150_ANY_MOTION_EN_REG);
 318 }
 319
 320 static void bma150_report_xyz(struct bma150_data *bma150)
 321 {
 322         u8 data[BMA150_XYZ_DATA_SIZE];
 323         s16 x, y, z;
 324         s32 ret;
 325
 326         ret = i2c_smbus_read_i2c_block_data(bma150->client,
 327                         BMA150_ACC_X_LSB_REG, BMA150_XYZ_DATA_SIZE, data);
 328         if (ret != BMA150_XYZ_DATA_SIZE)
 329                 return;
 330
 331         x = ((0xc0 & data[0]) >> 6) | (data[1] << 2);
 332         y = ((0xc0 & data[2]) >> 6) | (data[3] << 2);
 333         z = ((0xc0 & data[4]) >> 6) | (data[5] << 2);
 334
 335         x = sign_extend32(x, 9);
 336         y = sign_extend32(y, 9);
 337         z = sign_extend32(z, 9);
 338
 339         input_report_abs(bma150->input, ABS_X, x);
 340         input_report_abs(bma150->input, ABS_Y, y);
 341         input_report_abs(bma150->input, ABS_Z, z);
 342         input_sync(bma150->input);
 343 }
 344
 345 static irqreturn_t bma150_irq_thread(int irq, void *dev)
 346 {
 347         bma150_report_xyz(dev);
 348
 349         return IRQ_HANDLED;
 350 }
 351
 352 static void bma150_poll(struct input_polled_dev *dev)
 353 {
 354         bma150_report_xyz(dev->private);
 355 }
 356
 357 static int bma150_open(struct bma150_data *bma150)
 358 {
 359         int error;
 360
 361         error = pm_runtime_get_sync(&bma150->client->dev);
 362         if (error < 0 && error != -ENOSYS)
 363                 return error;
 364
 365         /*
 366          * See if runtime PM woke up the device. If runtime PM
 367          * is disabled we need to do it ourselves.
 368          */
 369         if (bma150->mode != BMA150_MODE_NORMAL) {
 370                 error = bma150_set_mode(bma150, BMA150_MODE_NORMAL);
 371                 if (error)
 372                         return error;
 373         }
 374
 375         return 0;
 376 }
 377
 378 static void bma150_close(struct bma150_data *bma150)
 379 {
 380         pm_runtime_put_sync(&bma150->client->dev);
 381
 382         if (bma150->mode != BMA150_MODE_SLEEP)
 383                 bma150_set_mode(bma150, BMA150_MODE_SLEEP);
 384 }
 385
 386 static int bma150_irq_open(struct input_dev *input)
 387 {
 388         struct bma150_data *bma150 = input_get_drvdata(input);
 389
 390         return bma150_open(bma150);
 391 }
 392
 393 static void bma150_irq_close(struct input_dev *input)
 394 {
 395         struct bma150_data *bma150 = input_get_drvdata(input);
 396
 397         bma150_close(bma150);
 398 }
 399
 400 static void bma150_poll_open(struct input_polled_dev *ipoll_dev)
 401 {
 402         struct bma150_data *bma150 = ipoll_dev->private;
 403
 404         bma150_open(bma150);
 405 }
 406
 407 static void bma150_poll_close(struct input_polled_dev *ipoll_dev)
 408 {
 409         struct bma150_data *bma150 = ipoll_dev->private;
 410
 411         bma150_close(bma150);
 412 }
 413
 414 static int bma150_initialize(struct bma150_data *bma150,
 415                                        const struct bma150_cfg *cfg)
 416 {
 417         int error;
 418
 419         error = bma150_soft_reset(bma150);
 420         if (error)
 421                 return error;
 422
 423         error = bma150_set_bandwidth(bma150, cfg->bandwidth);
 424         if (error)
 425                 return error;
 426
 427         error = bma150_set_range(bma150, cfg->range);
 428         if (error)
 429                 return error;
 430
 431         if (bma150->client->irq) {
 432                 error = bma150_set_any_motion_interrupt(bma150,
 433                                         cfg->any_motion_int,
 434                                         cfg->any_motion_dur,
 435                                         cfg->any_motion_thres);
 436                 if (error)
 437                         return error;
 438
 439                 error = bma150_set_high_g_interrupt(bma150,
 440                                         cfg->hg_int, cfg->hg_hyst,
 441                                         cfg->hg_dur, cfg->hg_thres);
 442                 if (error)
 443                         return error;
 444
 445                 error = bma150_set_low_g_interrupt(bma150,
 446                                         cfg->lg_int, cfg->lg_hyst,
 447                                         cfg->lg_dur, cfg->lg_thres);
 448                 if (error)
 449                         return error;
 450         }
 451
 452         return bma150_set_mode(bma150, BMA150_MODE_SLEEP);
 453 }
 454
 455 static void bma150_init_input_device(struct bma150_data *bma150,
 456                                                 struct input_dev *idev)
 457 {
 458         idev->name = BMA150_DRIVER;
 459         idev->phys = BMA150_DRIVER "/input0";
 460         idev->id.bustype = BUS_I2C;
 461         idev->dev.parent = &bma150->client->dev;
 462
 463         idev->evbit[0] = BIT_MASK(EV_ABS);
 464         input_set_abs_params(idev, ABS_X, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 465         input_set_abs_params(idev, ABS_Y, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 466         input_set_abs_params(idev, ABS_Z, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 467 }
 468
 469 static int bma150_register_input_device(struct bma150_data *bma150)
 470 {
 471         struct input_dev *idev;
 472         int error;
 473
 474         idev = input_allocate_device();
 475         if (!idev)
 476                 return -ENOMEM;
 477
 478         bma150_init_input_device(bma150, idev);
 479
 480         idev->open = bma150_irq_open;
 481         idev->close = bma150_irq_close;
 482         input_set_drvdata(idev, bma150);
 483
 484         bma150->input = idev;
 485
 486         error = input_register_device(idev);
 487         if (error) {
 488                 input_free_device(idev);
 489                 return error;
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int bma150_register_polled_device(struct bma150_data *bma150)
 496 {
 497         struct input_polled_dev *ipoll_dev;
 498         int error;
 499
 500         ipoll_dev = input_allocate_polled_device();
 501         if (!ipoll_dev)
 502                 return -ENOMEM;
 503
 504         ipoll_dev->private = bma150;
 505         ipoll_dev->open = bma150_poll_open;
 506         ipoll_dev->close = bma150_poll_close;
 507         ipoll_dev->poll = bma150_poll;
 508         ipoll_dev->poll_interval = BMA150_POLL_INTERVAL;
 509         ipoll_dev->poll_interval_min = BMA150_POLL_MIN;
 510         ipoll_dev->poll_interval_max = BMA150_POLL_MAX;
 511
 512         bma150_init_input_device(bma150, ipoll_dev->input);
 513
 514         bma150->input_polled = ipoll_dev;
 515         bma150->input = ipoll_dev->input;
 516
 517         error = input_register_polled_device(ipoll_dev);
 518         if (error) {
 519                 input_free_polled_device(ipoll_dev);
 520                 return error;
 521         }
 522
 523         return 0;
 524 }
 525
 526 static int bma150_probe(struct i2c_client *client,
 527                                   const struct i2c_device_id *id)
 528 {
 529         const struct bma150_platform_data *pdata =
 530                         dev_get_platdata(&client->dev);
 531         const struct bma150_cfg *cfg;
 532         struct bma150_data *bma150;
 533         int chip_id;
 534         int error;
 535
 536         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 537                 dev_err(&client->dev, "i2c_check_functionality error\n");
 538                 return -EIO;
 539         }
 540
 541         chip_id = i2c_smbus_read_byte_data(client, BMA150_CHIP_ID_REG);
 542         if (chip_id != BMA150_CHIP_ID) {
 543                 dev_err(&client->dev, "BMA150 chip id error: %d\n", chip_id);
 544                 return -EINVAL;
 545         }
 546
 547         bma150 = kzalloc(sizeof(struct bma150_data), GFP_KERNEL);
 548         if (!bma150)
 549                 return -ENOMEM;
 550
 551         bma150->client = client;
 552
 553         if (pdata) {
 554                 if (pdata->irq_gpio_cfg) {
 555                         error = pdata->irq_gpio_cfg();
 556                         if (error) {
 557                                 dev_err(&client->dev,
 558                                         "IRQ GPIO conf. error %d, error %d\n",
 559                                         client->irq, error);
 560                                 goto err_free_mem;
 561                         }
 562                 }
 563                 cfg = &pdata->cfg;
 564         } else {
 565                 cfg = &default_cfg;
 566         }
 567
 568         error = bma150_initialize(bma150, cfg);
 569         if (error)
 570                 goto err_free_mem;
 571
 572         if (client->irq > 0) {
 573                 error = bma150_register_input_device(bma150);
 574                 if (error)
 575                         goto err_free_mem;
 576
 577                 error = request_threaded_irq(client->irq,
 578                                         NULL, bma150_irq_thread,
 579                                         IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 580                                         BMA150_DRIVER, bma150);
 581                 if (error) {
 582                         dev_err(&client->dev,
 583                                 "irq request failed %d, error %d\n",
 584                                 client->irq, error);
 585                         input_unregister_device(bma150->input);
 586                         goto err_free_mem;
 587                 }
 588         } else {
 589                 error = bma150_register_polled_device(bma150);
 590                 if (error)
 591                         goto err_free_mem;
 592         }
 593
 594         i2c_set_clientdata(client, bma150);
 595
 596         pm_runtime_enable(&client->dev);
 597
 598         return 0;
 599
 600 err_free_mem:
 601         kfree(bma150);
 602         return error;
 603 }
 604
 605 static int bma150_remove(struct i2c_client *client)
 606 {
 607         struct bma150_data *bma150 = i2c_get_clientdata(client);
 608
 609         pm_runtime_disable(&client->dev);
 610
 611         if (client->irq > 0) {
 612                 free_irq(client->irq, bma150);
 613                 input_unregister_device(bma150->input);
 614         } else {
 615                 input_unregister_polled_device(bma150->input_polled);
 616                 input_free_polled_device(bma150->input_polled);
 617         }
 618
 619         kfree(bma150);
 620
 621         return 0;
 622 }
 623
 624 #ifdef CONFIG_PM
 625 static int bma150_suspend(struct device *dev)
 626 {
 627         struct i2c_client *client = to_i2c_client(dev);
 628         struct bma150_data *bma150 = i2c_get_clientdata(client);
 629
 630         return bma150_set_mode(bma150, BMA150_MODE_SLEEP);
 631 }
 632
 633 static int bma150_resume(struct device *dev)
 634 {
 635         struct i2c_client *client = to_i2c_client(dev);
 636         struct bma150_data *bma150 = i2c_get_clientdata(client);
 637
 638         return bma150_set_mode(bma150, BMA150_MODE_NORMAL);
 639 }
 640 #endif
 641
 642 static UNIVERSAL_DEV_PM_OPS(bma150_pm, bma150_suspend, bma150_resume, NULL);
 643
 644 static const struct i2c_device_id bma150_id[] = {
 645         { "bma150", 0 },
 646         { "smb380", 0 },
 647         { "bma023", 0 },
 648         { }
 649 };
 650
 651 MODULE_DEVICE_TABLE(i2c, bma150_id);
 652
 653 static struct i2c_driver bma150_driver = {
 654         .driver = {
 655                 .name   = BMA150_DRIVER,
 656                 .pm     = &bma150_pm,
 657         },
 658         .class          = I2C_CLASS_HWMON,
 659         .id_table       = bma150_id,
 660         .probe          = bma150_probe,
 661         .remove         = bma150_remove,
 662 };
 663
 664 module_i2c_driver(bma150_driver);
 665
 666 MODULE_AUTHOR("Albert Zhang <xu.zhang@bosch-sensortec.com>");
 667 MODULE_DESCRIPTION("BMA150 driver");
 668 MODULE_LICENSE("GPL");