drivers/input/mouse/elan_i2c_i2c.c

   1 /*
   2  * Elan I2C/SMBus Touchpad driver - I2C interface
   3  *
   4  * Copyright (c) 2013 ELAN Microelectronics Corp.
   5  *
   6  * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
   7  *
   8  * Based on cyapa driver:
   9  * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
  10  * copyright (c) 2011-2012 Google, Inc.
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License version 2 as published
  14  * by the Free Software Foundation.
  15  *
  16  * Trademarks are the property of their respective owners.
  17  */
  18
  19 #include <linux/completion.h>
  20 #include <linux/delay.h>
  21 #include <linux/i2c.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/jiffies.h>
  24 #include <linux/kernel.h>
  25 #include <linux/sched.h>
  26 #include <asm/unaligned.h>
  27
  28 #include "elan_i2c.h"
  29
  30 /* Elan i2c commands */
  31 #define ETP_I2C_RESET                   0x0100
  32 #define ETP_I2C_WAKE_UP                 0x0800
  33 #define ETP_I2C_SLEEP                   0x0801
  34 #define ETP_I2C_DESC_CMD                0x0001
  35 #define ETP_I2C_REPORT_DESC_CMD         0x0002
  36 #define ETP_I2C_STAND_CMD               0x0005
  37 #define ETP_I2C_PATTERN_CMD             0x0100
  38 #define ETP_I2C_UNIQUEID_CMD            0x0101
  39 #define ETP_I2C_FW_VERSION_CMD          0x0102
  40 #define ETP_I2C_IC_TYPE_CMD             0x0103
  41 #define ETP_I2C_OSM_VERSION_CMD         0x0103
  42 #define ETP_I2C_NSM_VERSION_CMD         0x0104
  43 #define ETP_I2C_XY_TRACENUM_CMD         0x0105
  44 #define ETP_I2C_MAX_X_AXIS_CMD          0x0106
  45 #define ETP_I2C_MAX_Y_AXIS_CMD          0x0107
  46 #define ETP_I2C_RESOLUTION_CMD          0x0108
  47 #define ETP_I2C_PRESSURE_CMD            0x010A
  48 #define ETP_I2C_IAP_VERSION_CMD         0x0110
  49 #define ETP_I2C_SET_CMD                 0x0300
  50 #define ETP_I2C_POWER_CMD               0x0307
  51 #define ETP_I2C_FW_CHECKSUM_CMD         0x030F
  52 #define ETP_I2C_IAP_CTRL_CMD            0x0310
  53 #define ETP_I2C_IAP_CMD                 0x0311
  54 #define ETP_I2C_IAP_RESET_CMD           0x0314
  55 #define ETP_I2C_IAP_CHECKSUM_CMD        0x0315
  56 #define ETP_I2C_CALIBRATE_CMD           0x0316
  57 #define ETP_I2C_MAX_BASELINE_CMD        0x0317
  58 #define ETP_I2C_MIN_BASELINE_CMD        0x0318
  59
  60 #define ETP_I2C_REPORT_LEN              34
  61 #define ETP_I2C_DESC_LENGTH             30
  62 #define ETP_I2C_REPORT_DESC_LENGTH      158
  63 #define ETP_I2C_INF_LENGTH              2
  64 #define ETP_I2C_IAP_PASSWORD            0x1EA5
  65 #define ETP_I2C_IAP_RESET               0xF0F0
  66 #define ETP_I2C_MAIN_MODE_ON            (1 << 9)
  67 #define ETP_I2C_IAP_REG_L               0x01
  68 #define ETP_I2C_IAP_REG_H               0x06
  69
  70 static int elan_i2c_read_block(struct i2c_client *client,
  71                                u16 reg, u8 *val, u16 len)
  72 {
  73         __le16 buf[] = {
  74                 cpu_to_le16(reg),
  75         };
  76         struct i2c_msg msgs[] = {
  77                 {
  78                         .addr = client->addr,
  79                         .flags = client->flags & I2C_M_TEN,
  80                         .len = sizeof(buf),
  81                         .buf = (u8 *)buf,
  82                 },
  83                 {
  84                         .addr = client->addr,
  85                         .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
  86                         .len = len,
  87                         .buf = val,
  88                 }
  89         };
  90         int ret;
  91
  92         ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
  93         return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
  94 }
  95
  96 static int elan_i2c_read_cmd(struct i2c_client *client, u16 reg, u8 *val)
  97 {
  98         int retval;
  99
 100         retval = elan_i2c_read_block(client, reg, val, ETP_I2C_INF_LENGTH);
 101         if (retval < 0) {
 102                 dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
 103                 return retval;
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int elan_i2c_write_cmd(struct i2c_client *client, u16 reg, u16 cmd)
 110 {
 111         __le16 buf[] = {
 112                 cpu_to_le16(reg),
 113                 cpu_to_le16(cmd),
 114         };
 115         struct i2c_msg msg = {
 116                 .addr = client->addr,
 117                 .flags = client->flags & I2C_M_TEN,
 118                 .len = sizeof(buf),
 119                 .buf = (u8 *)buf,
 120         };
 121         int ret;
 122
 123         ret = i2c_transfer(client->adapter, &msg, 1);
 124         if (ret != 1) {
 125                 if (ret >= 0)
 126                         ret = -EIO;
 127                 dev_err(&client->dev, "writing cmd (0x%04x) failed: %d\n",
 128                         reg, ret);
 129                 return ret;
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int elan_i2c_initialize(struct i2c_client *client)
 136 {
 137         struct device *dev = &client->dev;
 138         int error;
 139         u8 val[256];
 140
 141         error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
 142         if (error) {
 143                 dev_err(dev, "device reset failed: %d\n", error);
 144                 return error;
 145         }
 146
 147         /* Wait for the device to reset */
 148         msleep(100);
 149
 150         /* get reset acknowledgement 0000 */
 151         error = i2c_master_recv(client, val, ETP_I2C_INF_LENGTH);
 152         if (error < 0) {
 153                 dev_err(dev, "failed to read reset response: %d\n", error);
 154                 return error;
 155         }
 156
 157         error = elan_i2c_read_block(client, ETP_I2C_DESC_CMD,
 158                                     val, ETP_I2C_DESC_LENGTH);
 159         if (error) {
 160                 dev_err(dev, "cannot get device descriptor: %d\n", error);
 161                 return error;
 162         }
 163
 164         error = elan_i2c_read_block(client, ETP_I2C_REPORT_DESC_CMD,
 165                                     val, ETP_I2C_REPORT_DESC_LENGTH);
 166         if (error) {
 167                 dev_err(dev, "fetching report descriptor failed.: %d\n", error);
 168                 return error;
 169         }
 170
 171         return 0;
 172 }
 173
 174 static int elan_i2c_sleep_control(struct i2c_client *client, bool sleep)
 175 {
 176         return elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD,
 177                                   sleep ? ETP_I2C_SLEEP : ETP_I2C_WAKE_UP);
 178 }
 179
 180 static int elan_i2c_power_control(struct i2c_client *client, bool enable)
 181 {
 182         u8 val[2];
 183         u16 reg;
 184         int error;
 185
 186         error = elan_i2c_read_cmd(client, ETP_I2C_POWER_CMD, val);
 187         if (error) {
 188                 dev_err(&client->dev,
 189                         "failed to read current power state: %d\n",
 190                         error);
 191                 return error;
 192         }
 193
 194         reg = le16_to_cpup((__le16 *)val);
 195         if (enable)
 196                 reg &= ~ETP_DISABLE_POWER;
 197         else
 198                 reg |= ETP_DISABLE_POWER;
 199
 200         error = elan_i2c_write_cmd(client, ETP_I2C_POWER_CMD, reg);
 201         if (error) {
 202                 dev_err(&client->dev,
 203                         "failed to write current power state: %d\n",
 204                         error);
 205                 return error;
 206         }
 207
 208         return 0;
 209 }
 210
 211 static int elan_i2c_set_mode(struct i2c_client *client, u8 mode)
 212 {
 213         return elan_i2c_write_cmd(client, ETP_I2C_SET_CMD, mode);
 214 }
 215
 216
 217 static int elan_i2c_calibrate(struct i2c_client *client)
 218 {
 219         return elan_i2c_write_cmd(client, ETP_I2C_CALIBRATE_CMD, 1);
 220 }
 221
 222 static int elan_i2c_calibrate_result(struct i2c_client *client, u8 *val)
 223 {
 224         return elan_i2c_read_block(client, ETP_I2C_CALIBRATE_CMD, val, 1);
 225 }
 226
 227 static int elan_i2c_get_baseline_data(struct i2c_client *client,
 228                                       bool max_baseline, u8 *value)
 229 {
 230         int error;
 231         u8 val[3];
 232
 233         error = elan_i2c_read_cmd(client,
 234                                   max_baseline ? ETP_I2C_MAX_BASELINE_CMD :
 235                                                  ETP_I2C_MIN_BASELINE_CMD,
 236                                   val);
 237         if (error)
 238                 return error;
 239
 240         *value = le16_to_cpup((__le16 *)val);
 241
 242         return 0;
 243 }
 244
 245 static int elan_i2c_get_pattern(struct i2c_client *client, u8 *pattern)
 246 {
 247         int error;
 248         u8 val[3];
 249
 250         error = elan_i2c_read_cmd(client, ETP_I2C_PATTERN_CMD, val);
 251         if (error) {
 252                 dev_err(&client->dev, "failed to get pattern: %d\n", error);
 253                 return error;
 254         }
 255         *pattern = val[1];
 256
 257         return 0;
 258 }
 259
 260 static int elan_i2c_get_version(struct i2c_client *client,
 261                                 bool iap, u8 *version)
 262 {
 263         int error;
 264         u8 pattern_ver;
 265         u8 val[3];
 266
 267         error = elan_i2c_get_pattern(client, &pattern_ver);
 268         if (error) {
 269                 dev_err(&client->dev, "failed to get pattern version\n");
 270                 return error;
 271         }
 272
 273         error = elan_i2c_read_cmd(client,
 274                                   iap ? ETP_I2C_IAP_VERSION_CMD :
 275                                         ETP_I2C_FW_VERSION_CMD,
 276                                   val);
 277         if (error) {
 278                 dev_err(&client->dev, "failed to get %s version: %d\n",
 279                         iap ? "IAP" : "FW", error);
 280                 return error;
 281         }
 282
 283         if (pattern_ver == 0x01)
 284                 *version = iap ? val[1] : val[0];
 285         else
 286                 *version = val[0];
 287         return 0;
 288 }
 289
 290 static int elan_i2c_get_sm_version(struct i2c_client *client,
 291                                    u16 *ic_type, u8 *version)
 292 {
 293         int error;
 294         u8 pattern_ver;
 295         u8 val[3];
 296
 297         error = elan_i2c_get_pattern(client, &pattern_ver);
 298         if (error) {
 299                 dev_err(&client->dev, "failed to get pattern version\n");
 300                 return error;
 301         }
 302
 303         if (pattern_ver == 0x01) {
 304                 error = elan_i2c_read_cmd(client, ETP_I2C_IC_TYPE_CMD, val);
 305                 if (error) {
 306                         dev_err(&client->dev, "failed to get ic type: %d\n",
 307                                 error);
 308                         return error;
 309                 }
 310                 *ic_type = be16_to_cpup((__be16 *)val);
 311
 312                 error = elan_i2c_read_cmd(client, ETP_I2C_NSM_VERSION_CMD,
 313                                           val);
 314                 if (error) {
 315                         dev_err(&client->dev, "failed to get SM version: %d\n",
 316                                 error);
 317                         return error;
 318                 }
 319                 *version = val[1];
 320         } else {
 321                 error = elan_i2c_read_cmd(client, ETP_I2C_OSM_VERSION_CMD, val);
 322                 if (error) {
 323                         dev_err(&client->dev, "failed to get SM version: %d\n",
 324                                 error);
 325                         return error;
 326                 }
 327                 *version = val[0];
 328                 *ic_type = val[1];
 329         }
 330
 331         return 0;
 332 }
 333
 334 static int elan_i2c_get_product_id(struct i2c_client *client, u16 *id)
 335 {
 336         int error;
 337         u8 val[3];
 338
 339         error = elan_i2c_read_cmd(client, ETP_I2C_UNIQUEID_CMD, val);
 340         if (error) {
 341                 dev_err(&client->dev, "failed to get product ID: %d\n", error);
 342                 return error;
 343         }
 344
 345         *id = le16_to_cpup((__le16 *)val);
 346         return 0;
 347 }
 348
 349 static int elan_i2c_get_checksum(struct i2c_client *client,
 350                                  bool iap, u16 *csum)
 351 {
 352         int error;
 353         u8 val[3];
 354
 355         error = elan_i2c_read_cmd(client,
 356                                   iap ? ETP_I2C_IAP_CHECKSUM_CMD :
 357                                         ETP_I2C_FW_CHECKSUM_CMD,
 358                                   val);
 359         if (error) {
 360                 dev_err(&client->dev, "failed to get %s checksum: %d\n",
 361                         iap ? "IAP" : "FW", error);
 362                 return error;
 363         }
 364
 365         *csum = le16_to_cpup((__le16 *)val);
 366         return 0;
 367 }
 368
 369 static int elan_i2c_get_max(struct i2c_client *client,
 370                             unsigned int *max_x, unsigned int *max_y)
 371 {
 372         int error;
 373         u8 val[3];
 374
 375         error = elan_i2c_read_cmd(client, ETP_I2C_MAX_X_AXIS_CMD, val);
 376         if (error) {
 377                 dev_err(&client->dev, "failed to get X dimension: %d\n", error);
 378                 return error;
 379         }
 380
 381         *max_x = le16_to_cpup((__le16 *)val) & 0x0fff;
 382
 383         error = elan_i2c_read_cmd(client, ETP_I2C_MAX_Y_AXIS_CMD, val);
 384         if (error) {
 385                 dev_err(&client->dev, "failed to get Y dimension: %d\n", error);
 386                 return error;
 387         }
 388
 389         *max_y = le16_to_cpup((__le16 *)val) & 0x0fff;
 390
 391         return 0;
 392 }
 393
 394 static int elan_i2c_get_resolution(struct i2c_client *client,
 395                                    u8 *hw_res_x, u8 *hw_res_y)
 396 {
 397         int error;
 398         u8 val[3];
 399
 400         error = elan_i2c_read_cmd(client, ETP_I2C_RESOLUTION_CMD, val);
 401         if (error) {
 402                 dev_err(&client->dev, "failed to get resolution: %d\n", error);
 403                 return error;
 404         }
 405
 406         *hw_res_x = val[0];
 407         *hw_res_y = val[1];
 408
 409         return 0;
 410 }
 411
 412 static int elan_i2c_get_num_traces(struct i2c_client *client,
 413                                    unsigned int *x_traces,
 414                                    unsigned int *y_traces)
 415 {
 416         int error;
 417         u8 val[3];
 418
 419         error = elan_i2c_read_cmd(client, ETP_I2C_XY_TRACENUM_CMD, val);
 420         if (error) {
 421                 dev_err(&client->dev, "failed to get trace info: %d\n", error);
 422                 return error;
 423         }
 424
 425         *x_traces = val[0];
 426         *y_traces = val[1];
 427
 428         return 0;
 429 }
 430
 431 static int elan_i2c_get_pressure_adjustment(struct i2c_client *client,
 432                                             int *adjustment)
 433 {
 434         int error;
 435         u8 val[3];
 436
 437         error = elan_i2c_read_cmd(client, ETP_I2C_PRESSURE_CMD, val);
 438         if (error) {
 439                 dev_err(&client->dev, "failed to get pressure format: %d\n",
 440                         error);
 441                 return error;
 442         }
 443
 444         if ((val[0] >> 4) & 0x1)
 445                 *adjustment = 0;
 446         else
 447                 *adjustment = ETP_PRESSURE_OFFSET;
 448
 449         return 0;
 450 }
 451
 452 static int elan_i2c_iap_get_mode(struct i2c_client *client, enum tp_mode *mode)
 453 {
 454         int error;
 455         u16 constant;
 456         u8 val[3];
 457
 458         error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
 459         if (error) {
 460                 dev_err(&client->dev,
 461                         "failed to read iap control register: %d\n",
 462                         error);
 463                 return error;
 464         }
 465
 466         constant = le16_to_cpup((__le16 *)val);
 467         dev_dbg(&client->dev, "iap control reg: 0x%04x.\n", constant);
 468
 469         *mode = (constant & ETP_I2C_MAIN_MODE_ON) ? MAIN_MODE : IAP_MODE;
 470
 471         return 0;
 472 }
 473
 474 static int elan_i2c_iap_reset(struct i2c_client *client)
 475 {
 476         int error;
 477
 478         error = elan_i2c_write_cmd(client, ETP_I2C_IAP_RESET_CMD,
 479                                    ETP_I2C_IAP_RESET);
 480         if (error) {
 481                 dev_err(&client->dev, "cannot reset IC: %d\n", error);
 482                 return error;
 483         }
 484
 485         return 0;
 486 }
 487
 488 static int elan_i2c_set_flash_key(struct i2c_client *client)
 489 {
 490         int error;
 491
 492         error = elan_i2c_write_cmd(client, ETP_I2C_IAP_CMD,
 493                                    ETP_I2C_IAP_PASSWORD);
 494         if (error) {
 495                 dev_err(&client->dev, "cannot set flash key: %d\n", error);
 496                 return error;
 497         }
 498
 499         return 0;
 500 }
 501
 502 static int elan_i2c_prepare_fw_update(struct i2c_client *client)
 503 {
 504         struct device *dev = &client->dev;
 505         int error;
 506         enum tp_mode mode;
 507         u8 val[3];
 508         u16 password;
 509
 510         /* Get FW in which mode (IAP_MODE/MAIN_MODE)  */
 511         error = elan_i2c_iap_get_mode(client, &mode);
 512         if (error)
 513                 return error;
 514
 515         if (mode == IAP_MODE) {
 516                 /* Reset IC */
 517                 error = elan_i2c_iap_reset(client);
 518                 if (error)
 519                         return error;
 520
 521                 msleep(30);
 522         }
 523
 524         /* Set flash key*/
 525         error = elan_i2c_set_flash_key(client);
 526         if (error)
 527                 return error;
 528
 529         /* Wait for F/W IAP initialization */
 530         msleep(mode == MAIN_MODE ? 100 : 30);
 531
 532         /* Check if we are in IAP mode or not */
 533         error = elan_i2c_iap_get_mode(client, &mode);
 534         if (error)
 535                 return error;
 536
 537         if (mode == MAIN_MODE) {
 538                 dev_err(dev, "wrong mode: %d\n", mode);
 539                 return -EIO;
 540         }
 541
 542         /* Set flash key again */
 543         error = elan_i2c_set_flash_key(client);
 544         if (error)
 545                 return error;
 546
 547         /* Wait for F/W IAP initialization */
 548         msleep(30);
 549
 550         /* read back to check we actually enabled successfully. */
 551         error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CMD, val);
 552         if (error) {
 553                 dev_err(dev, "cannot read iap password: %d\n",
 554                         error);
 555                 return error;
 556         }
 557
 558         password = le16_to_cpup((__le16 *)val);
 559         if (password != ETP_I2C_IAP_PASSWORD) {
 560                 dev_err(dev, "wrong iap password: 0x%X\n", password);
 561                 return -EIO;
 562         }
 563
 564         return 0;
 565 }
 566
 567 static int elan_i2c_write_fw_block(struct i2c_client *client,
 568                                    const u8 *page, u16 checksum, int idx)
 569 {
 570         struct device *dev = &client->dev;
 571         u8 page_store[ETP_FW_PAGE_SIZE + 4];
 572         u8 val[3];
 573         u16 result;
 574         int ret, error;
 575
 576         page_store[0] = ETP_I2C_IAP_REG_L;
 577         page_store[1] = ETP_I2C_IAP_REG_H;
 578         memcpy(&page_store[2], page, ETP_FW_PAGE_SIZE);
 579         /* recode checksum at last two bytes */
 580         put_unaligned_le16(checksum, &page_store[ETP_FW_PAGE_SIZE + 2]);
 581
 582         ret = i2c_master_send(client, page_store, sizeof(page_store));
 583         if (ret != sizeof(page_store)) {
 584                 error = ret < 0 ? ret : -EIO;
 585                 dev_err(dev, "Failed to write page %d: %d\n", idx, error);
 586                 return error;
 587         }
 588
 589         /* Wait for F/W to update one page ROM data. */
 590         msleep(20);
 591
 592         error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
 593         if (error) {
 594                 dev_err(dev, "Failed to read IAP write result: %d\n", error);
 595                 return error;
 596         }
 597
 598         result = le16_to_cpup((__le16 *)val);
 599         if (result & (ETP_FW_IAP_PAGE_ERR | ETP_FW_IAP_INTF_ERR)) {
 600                 dev_err(dev, "IAP reports failed write: %04hx\n",
 601                         result);
 602                 return -EIO;
 603         }
 604
 605         return 0;
 606 }
 607
 608 static int elan_i2c_finish_fw_update(struct i2c_client *client,
 609                                      struct completion *completion)
 610 {
 611         struct device *dev = &client->dev;
 612         int error;
 613         int len;
 614         u8 buffer[ETP_I2C_REPORT_LEN];
 615
 616         len = i2c_master_recv(client, buffer, ETP_I2C_REPORT_LEN);
 617         if (len != ETP_I2C_REPORT_LEN) {
 618                 error = len < 0 ? len : -EIO;
 619                 dev_warn(dev, "failed to read I2C data after FW WDT reset: %d (%d)\n",
 620                         error, len);
 621         }
 622
 623         reinit_completion(completion);
 624         enable_irq(client->irq);
 625
 626         error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
 627         if (error) {
 628                 dev_err(dev, "device reset failed: %d\n", error);
 629         } else if (!wait_for_completion_timeout(completion,
 630                                                 msecs_to_jiffies(300))) {
 631                 dev_err(dev, "timeout waiting for device reset\n");
 632                 error = -ETIMEDOUT;
 633         }
 634
 635         disable_irq(client->irq);
 636
 637         if (error)
 638                 return error;
 639
 640         len = i2c_master_recv(client, buffer, ETP_I2C_INF_LENGTH);
 641         if (len != ETP_I2C_INF_LENGTH) {
 642                 error = len < 0 ? len : -EIO;
 643                 dev_err(dev, "failed to read INT signal: %d (%d)\n",
 644                         error, len);
 645                 return error;
 646         }
 647
 648         return 0;
 649 }
 650
 651 static int elan_i2c_get_report(struct i2c_client *client, u8 *report)
 652 {
 653         int len;
 654
 655         len = i2c_master_recv(client, report, ETP_I2C_REPORT_LEN);
 656         if (len < 0) {
 657                 dev_err(&client->dev, "failed to read report data: %d\n", len);
 658                 return len;
 659         }
 660
 661         if (len != ETP_I2C_REPORT_LEN) {
 662                 dev_err(&client->dev,
 663                         "wrong report length (%d vs %d expected)\n",
 664                         len, ETP_I2C_REPORT_LEN);
 665                 return -EIO;
 666         }
 667
 668         return 0;
 669 }
 670
 671 const struct elan_transport_ops elan_i2c_ops = {
 672         .initialize             = elan_i2c_initialize,
 673         .sleep_control          = elan_i2c_sleep_control,
 674         .power_control          = elan_i2c_power_control,
 675         .set_mode               = elan_i2c_set_mode,
 676
 677         .calibrate              = elan_i2c_calibrate,
 678         .calibrate_result       = elan_i2c_calibrate_result,
 679
 680         .get_baseline_data      = elan_i2c_get_baseline_data,
 681
 682         .get_version            = elan_i2c_get_version,
 683         .get_sm_version         = elan_i2c_get_sm_version,
 684         .get_product_id         = elan_i2c_get_product_id,
 685         .get_checksum           = elan_i2c_get_checksum,
 686         .get_pressure_adjustment = elan_i2c_get_pressure_adjustment,
 687
 688         .get_max                = elan_i2c_get_max,
 689         .get_resolution         = elan_i2c_get_resolution,
 690         .get_num_traces         = elan_i2c_get_num_traces,
 691
 692         .iap_get_mode           = elan_i2c_iap_get_mode,
 693         .iap_reset              = elan_i2c_iap_reset,
 694
 695         .prepare_fw_update      = elan_i2c_prepare_fw_update,
 696         .write_fw_block         = elan_i2c_write_fw_block,
 697         .finish_fw_update       = elan_i2c_finish_fw_update,
 698
 699         .get_pattern            = elan_i2c_get_pattern,
 700
 701         .get_report             = elan_i2c_get_report,
 702 };