kernel/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 BMA180_CHIP_ID          3
  74 #define BMA150_CHIP_ID_REG      BMA150_DATA_0_REG
  75
  76 #define BMA150_ACC_X_LSB_REG    BMA150_DATA_2_REG
  77
  78 #define BMA150_SLEEP_POS        0
  79 #define BMA150_SLEEP_MSK        0x01
  80 #define BMA150_SLEEP_REG        BMA150_CTRL_0_REG
  81
  82 #define BMA150_BANDWIDTH_POS    0
  83 #define BMA150_BANDWIDTH_MSK    0x07
  84 #define BMA150_BANDWIDTH_REG    BMA150_CTRL_2_REG
  85
  86 #define BMA150_RANGE_POS        3
  87 #define BMA150_RANGE_MSK        0x18
  88 #define BMA150_RANGE_REG        BMA150_CTRL_2_REG
  89
  90 #define BMA150_WAKE_UP_POS      0
  91 #define BMA150_WAKE_UP_MSK      0x01
  92 #define BMA150_WAKE_UP_REG      BMA150_CTRL_3_REG
  93
  94 #define BMA150_SW_RES_POS       1
  95 #define BMA150_SW_RES_MSK       0x02
  96 #define BMA150_SW_RES_REG       BMA150_CTRL_0_REG
  97
  98 /* Any-motion interrupt register fields */
  99 #define BMA150_ANY_MOTION_EN_POS        6
 100 #define BMA150_ANY_MOTION_EN_MSK        0x40
 101 #define BMA150_ANY_MOTION_EN_REG        BMA150_CTRL_1_REG
 102
 103 #define BMA150_ANY_MOTION_DUR_POS       6
 104 #define BMA150_ANY_MOTION_DUR_MSK       0xC0
 105 #define BMA150_ANY_MOTION_DUR_REG       BMA150_CFG_5_REG
 106
 107 #define BMA150_ANY_MOTION_THRES_REG     BMA150_CFG_4_REG
 108
 109 /* Advanced interrupt register fields */
 110 #define BMA150_ADV_INT_EN_POS           6
 111 #define BMA150_ADV_INT_EN_MSK           0x40
 112 #define BMA150_ADV_INT_EN_REG           BMA150_CTRL_3_REG
 113
 114 /* High-G interrupt register fields */
 115 #define BMA150_HIGH_G_EN_POS            1
 116 #define BMA150_HIGH_G_EN_MSK            0x02
 117 #define BMA150_HIGH_G_EN_REG            BMA150_CTRL_1_REG
 118
 119 #define BMA150_HIGH_G_HYST_POS          3
 120 #define BMA150_HIGH_G_HYST_MSK          0x38
 121 #define BMA150_HIGH_G_HYST_REG          BMA150_CFG_5_REG
 122
 123 #define BMA150_HIGH_G_DUR_REG           BMA150_CFG_3_REG
 124 #define BMA150_HIGH_G_THRES_REG         BMA150_CFG_2_REG
 125
 126 /* Low-G interrupt register fields */
 127 #define BMA150_LOW_G_EN_POS             0
 128 #define BMA150_LOW_G_EN_MSK             0x01
 129 #define BMA150_LOW_G_EN_REG             BMA150_CTRL_1_REG
 130
 131 #define BMA150_LOW_G_HYST_POS           0
 132 #define BMA150_LOW_G_HYST_MSK           0x07
 133 #define BMA150_LOW_G_HYST_REG           BMA150_CFG_5_REG
 134
 135 #define BMA150_LOW_G_DUR_REG            BMA150_CFG_1_REG
 136 #define BMA150_LOW_G_THRES_REG          BMA150_CFG_0_REG
 137
 138 struct bma150_data {
 139         struct i2c_client *client;
 140         struct input_polled_dev *input_polled;
 141         struct input_dev *input;
 142         u8 mode;
 143 };
 144
 145 /*
 146  * The settings for the given range, bandwidth and interrupt features
 147  * are stated and verified by Bosch Sensortec where they are configured
 148  * to provide a generic sensitivity performance.
 149  */
 150 static struct bma150_cfg default_cfg = {
 151         .any_motion_int = 1,
 152         .hg_int = 1,
 153         .lg_int = 1,
 154         .any_motion_dur = 0,
 155         .any_motion_thres = 0,
 156         .hg_hyst = 0,
 157         .hg_dur = 150,
 158         .hg_thres = 160,
 159         .lg_hyst = 0,
 160         .lg_dur = 150,
 161         .lg_thres = 20,
 162         .range = BMA150_RANGE_2G,
 163         .bandwidth = BMA150_BW_50HZ
 164 };
 165
 166 static int bma150_write_byte(struct i2c_client *client, u8 reg, u8 val)
 167 {
 168         s32 ret;
 169
 170         /* As per specification, disable irq in between register writes */
 171         if (client->irq)
 172                 disable_irq_nosync(client->irq);
 173
 174         ret = i2c_smbus_write_byte_data(client, reg, val);
 175
 176         if (client->irq)
 177                 enable_irq(client->irq);
 178
 179         return ret;
 180 }
 181
 182 static int bma150_set_reg_bits(struct i2c_client *client,
 183                                         int val, int shift, u8 mask, u8 reg)
 184 {
 185         int data;
 186
 187         data = i2c_smbus_read_byte_data(client, reg);
 188         if (data < 0)
 189                 return data;
 190
 191         data = (data & ~mask) | ((val << shift) & mask);
 192         return bma150_write_byte(client, reg, data);
 193 }
 194
 195 static int bma150_set_mode(struct bma150_data *bma150, u8 mode)
 196 {
 197         int error;
 198
 199         error = bma150_set_reg_bits(bma150->client, mode, BMA150_WAKE_UP_POS,
 200                                 BMA150_WAKE_UP_MSK, BMA150_WAKE_UP_REG);
 201         if (error)
 202                 return error;
 203
 204         error = bma150_set_reg_bits(bma150->client, mode, BMA150_SLEEP_POS,
 205                                 BMA150_SLEEP_MSK, BMA150_SLEEP_REG);
 206         if (error)
 207                 return error;
 208
 209         if (mode == BMA150_MODE_NORMAL)
 210                 msleep(2);
 211
 212         bma150->mode = mode;
 213         return 0;
 214 }
 215
 216 static int bma150_soft_reset(struct bma150_data *bma150)
 217 {
 218         int error;
 219
 220         error = bma150_set_reg_bits(bma150->client, 1, BMA150_SW_RES_POS,
 221                                 BMA150_SW_RES_MSK, BMA150_SW_RES_REG);
 222         if (error)
 223                 return error;
 224
 225         msleep(2);
 226         return 0;
 227 }
 228
 229 static int bma150_set_range(struct bma150_data *bma150, u8 range)
 230 {
 231         return bma150_set_reg_bits(bma150->client, range, BMA150_RANGE_POS,
 232                                 BMA150_RANGE_MSK, BMA150_RANGE_REG);
 233 }
 234
 235 static int bma150_set_bandwidth(struct bma150_data *bma150, u8 bw)
 236 {
 237         return bma150_set_reg_bits(bma150->client, bw, BMA150_BANDWIDTH_POS,
 238                                 BMA150_BANDWIDTH_MSK, BMA150_BANDWIDTH_REG);
 239 }
 240
 241 static int bma150_set_low_g_interrupt(struct bma150_data *bma150,
 242                                         u8 enable, u8 hyst, u8 dur, u8 thres)
 243 {
 244         int error;
 245
 246         error = bma150_set_reg_bits(bma150->client, hyst,
 247                                 BMA150_LOW_G_HYST_POS, BMA150_LOW_G_HYST_MSK,
 248                                 BMA150_LOW_G_HYST_REG);
 249         if (error)
 250                 return error;
 251
 252         error = bma150_write_byte(bma150->client, BMA150_LOW_G_DUR_REG, dur);
 253         if (error)
 254                 return error;
 255
 256         error = bma150_write_byte(bma150->client, BMA150_LOW_G_THRES_REG, thres);
 257         if (error)
 258                 return error;
 259
 260         return bma150_set_reg_bits(bma150->client, !!enable,
 261                                 BMA150_LOW_G_EN_POS, BMA150_LOW_G_EN_MSK,
 262                                 BMA150_LOW_G_EN_REG);
 263 }
 264
 265 static int bma150_set_high_g_interrupt(struct bma150_data *bma150,
 266                                         u8 enable, u8 hyst, u8 dur, u8 thres)
 267 {
 268         int error;
 269
 270         error = bma150_set_reg_bits(bma150->client, hyst,
 271                                 BMA150_HIGH_G_HYST_POS, BMA150_HIGH_G_HYST_MSK,
 272                                 BMA150_HIGH_G_HYST_REG);
 273         if (error)
 274                 return error;
 275
 276         error = bma150_write_byte(bma150->client,
 277                                 BMA150_HIGH_G_DUR_REG, dur);
 278         if (error)
 279                 return error;
 280
 281         error = bma150_write_byte(bma150->client,
 282                                 BMA150_HIGH_G_THRES_REG, thres);
 283         if (error)
 284                 return error;
 285
 286         return bma150_set_reg_bits(bma150->client, !!enable,
 287                                 BMA150_HIGH_G_EN_POS, BMA150_HIGH_G_EN_MSK,
 288                                 BMA150_HIGH_G_EN_REG);
 289 }
 290
 291
 292 static int bma150_set_any_motion_interrupt(struct bma150_data *bma150,
 293                                                 u8 enable, u8 dur, u8 thres)
 294 {
 295         int error;
 296
 297         error = bma150_set_reg_bits(bma150->client, dur,
 298                                 BMA150_ANY_MOTION_DUR_POS,
 299                                 BMA150_ANY_MOTION_DUR_MSK,
 300                                 BMA150_ANY_MOTION_DUR_REG);
 301         if (error)
 302                 return error;
 303
 304         error = bma150_write_byte(bma150->client,
 305                                 BMA150_ANY_MOTION_THRES_REG, thres);
 306         if (error)
 307                 return error;
 308
 309         error = bma150_set_reg_bits(bma150->client, !!enable,
 310                                 BMA150_ADV_INT_EN_POS, BMA150_ADV_INT_EN_MSK,
 311                                 BMA150_ADV_INT_EN_REG);
 312         if (error)
 313                 return error;
 314
 315         return bma150_set_reg_bits(bma150->client, !!enable,
 316                                 BMA150_ANY_MOTION_EN_POS,
 317                                 BMA150_ANY_MOTION_EN_MSK,
 318                                 BMA150_ANY_MOTION_EN_REG);
 319 }
 320
 321 static void bma150_report_xyz(struct bma150_data *bma150)
 322 {
 323         u8 data[BMA150_XYZ_DATA_SIZE];
 324         s16 x, y, z;
 325         s32 ret;
 326
 327         ret = i2c_smbus_read_i2c_block_data(bma150->client,
 328                         BMA150_ACC_X_LSB_REG, BMA150_XYZ_DATA_SIZE, data);
 329         if (ret != BMA150_XYZ_DATA_SIZE)
 330                 return;
 331
 332         x = ((0xc0 & data[0]) >> 6) | (data[1] << 2);
 333         y = ((0xc0 & data[2]) >> 6) | (data[3] << 2);
 334         z = ((0xc0 & data[4]) >> 6) | (data[5] << 2);
 335
 336         x = sign_extend32(x, 9);
 337         y = sign_extend32(y, 9);
 338         z = sign_extend32(z, 9);
 339
 340         input_report_abs(bma150->input, ABS_X, x);
 341         input_report_abs(bma150->input, ABS_Y, y);
 342         input_report_abs(bma150->input, ABS_Z, z);
 343         input_sync(bma150->input);
 344 }
 345
 346 static irqreturn_t bma150_irq_thread(int irq, void *dev)
 347 {
 348         bma150_report_xyz(dev);
 349
 350         return IRQ_HANDLED;
 351 }
 352
 353 static void bma150_poll(struct input_polled_dev *dev)
 354 {
 355         bma150_report_xyz(dev->private);
 356 }
 357
 358 static int bma150_open(struct bma150_data *bma150)
 359 {
 360         int error;
 361
 362         error = pm_runtime_get_sync(&bma150->client->dev);
 363         if (error < 0 && error != -ENOSYS)
 364                 return error;
 365
 366         /*
 367          * See if runtime PM woke up the device. If runtime PM
 368          * is disabled we need to do it ourselves.
 369          */
 370         if (bma150->mode != BMA150_MODE_NORMAL) {
 371                 error = bma150_set_mode(bma150, BMA150_MODE_NORMAL);
 372                 if (error)
 373                         return error;
 374         }
 375
 376         return 0;
 377 }
 378
 379 static void bma150_close(struct bma150_data *bma150)
 380 {
 381         pm_runtime_put_sync(&bma150->client->dev);
 382
 383         if (bma150->mode != BMA150_MODE_SLEEP)
 384                 bma150_set_mode(bma150, BMA150_MODE_SLEEP);
 385 }
 386
 387 static int bma150_irq_open(struct input_dev *input)
 388 {
 389         struct bma150_data *bma150 = input_get_drvdata(input);
 390
 391         return bma150_open(bma150);
 392 }
 393
 394 static void bma150_irq_close(struct input_dev *input)
 395 {
 396         struct bma150_data *bma150 = input_get_drvdata(input);
 397
 398         bma150_close(bma150);
 399 }
 400
 401 static void bma150_poll_open(struct input_polled_dev *ipoll_dev)
 402 {
 403         struct bma150_data *bma150 = ipoll_dev->private;
 404
 405         bma150_open(bma150);
 406 }
 407
 408 static void bma150_poll_close(struct input_polled_dev *ipoll_dev)
 409 {
 410         struct bma150_data *bma150 = ipoll_dev->private;
 411
 412         bma150_close(bma150);
 413 }
 414
 415 static int bma150_initialize(struct bma150_data *bma150,
 416                                        const struct bma150_cfg *cfg)
 417 {
 418         int error;
 419
 420         error = bma150_soft_reset(bma150);
 421         if (error)
 422                 return error;
 423
 424         error = bma150_set_bandwidth(bma150, cfg->bandwidth);
 425         if (error)
 426                 return error;
 427
 428         error = bma150_set_range(bma150, cfg->range);
 429         if (error)
 430                 return error;
 431
 432         if (bma150->client->irq) {
 433                 error = bma150_set_any_motion_interrupt(bma150,
 434                                         cfg->any_motion_int,
 435                                         cfg->any_motion_dur,
 436                                         cfg->any_motion_thres);
 437                 if (error)
 438                         return error;
 439
 440                 error = bma150_set_high_g_interrupt(bma150,
 441                                         cfg->hg_int, cfg->hg_hyst,
 442                                         cfg->hg_dur, cfg->hg_thres);
 443                 if (error)
 444                         return error;
 445
 446                 error = bma150_set_low_g_interrupt(bma150,
 447                                         cfg->lg_int, cfg->lg_hyst,
 448                                         cfg->lg_dur, cfg->lg_thres);
 449                 if (error)
 450                         return error;
 451         }
 452
 453         return bma150_set_mode(bma150, BMA150_MODE_SLEEP);
 454 }
 455
 456 static void bma150_init_input_device(struct bma150_data *bma150,
 457                                                 struct input_dev *idev)
 458 {
 459         idev->name = BMA150_DRIVER;
 460         idev->phys = BMA150_DRIVER "/input0";
 461         idev->id.bustype = BUS_I2C;
 462         idev->dev.parent = &bma150->client->dev;
 463
 464         idev->evbit[0] = BIT_MASK(EV_ABS);
 465         input_set_abs_params(idev, ABS_X, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 466         input_set_abs_params(idev, ABS_Y, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 467         input_set_abs_params(idev, ABS_Z, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
 468 }
 469
 470 static int bma150_register_input_device(struct bma150_data *bma150)
 471 {
 472         struct input_dev *idev;
 473         int error;
 474
 475         idev = input_allocate_device();
 476         if (!idev)
 477                 return -ENOMEM;
 478
 479         bma150_init_input_device(bma150, idev);
 480
 481         idev->open = bma150_irq_open;
 482         idev->close = bma150_irq_close;
 483         input_set_drvdata(idev, bma150);
 484
 485         error = input_register_device(idev);
 486         if (error) {
 487                 input_free_device(idev);
 488                 return error;
 489         }
 490
 491         bma150->input = idev;
 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         error = input_register_polled_device(ipoll_dev);
 515         if (error) {
 516                 input_free_polled_device(ipoll_dev);
 517                 return error;
 518         }
 519
 520         bma150->input_polled = ipoll_dev;
 521         bma150->input = ipoll_dev->input;
 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 && chip_id != BMA180_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         { "bma180", 0 },
 647         { "smb380", 0 },
 648         { "bma023", 0 },
 649         { }
 650 };
 651
 652 MODULE_DEVICE_TABLE(i2c, bma150_id);
 653
 654 static struct i2c_driver bma150_driver = {
 655         .driver = {
 656                 .name   = BMA150_DRIVER,
 657                 .pm     = &bma150_pm,
 658         },
 659         .class          = I2C_CLASS_HWMON,
 660         .id_table       = bma150_id,
 661         .probe          = bma150_probe,
 662         .remove         = bma150_remove,
 663 };
 664
 665 module_i2c_driver(bma150_driver);
 666
 667 MODULE_AUTHOR("Albert Zhang <xu.zhang@bosch-sensortec.com>");
 668 MODULE_DESCRIPTION("BMA150 driver");
 669 MODULE_LICENSE("GPL");