drivers/input/touchscreen/ilitek_ts_i2c.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ILITEK Touch IC driver for 23XX, 25XX and Lego series
   4  *
   5  * Copyright (C) 2011 ILI Technology Corporation.
   6  * Copyright (C) 2020 Luca Hsu <[email protected]>
   7  * Copyright (C) 2021 Joe Hung <[email protected]>
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/input.h>
  13 #include <linux/input/mt.h>
  14 #include <linux/i2c.h>
  15 #include <linux/slab.h>
  16 #include <linux/delay.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/errno.h>
  20 #include <linux/acpi.h>
  21 #include <linux/input/touchscreen.h>
  22 #include <linux/unaligned.h>
  23
  24
  25 #define ILITEK_TS_NAME                                  "ilitek_ts"
  26 #define BL_V1_8                                         0x108
  27 #define BL_V1_7                                         0x107
  28 #define BL_V1_6                                         0x106
  29
  30 #define ILITEK_TP_CMD_GET_TP_RES                        0x20
  31 #define ILITEK_TP_CMD_GET_SCRN_RES                      0x21
  32 #define ILITEK_TP_CMD_SET_IC_SLEEP                      0x30
  33 #define ILITEK_TP_CMD_SET_IC_WAKE                       0x31
  34 #define ILITEK_TP_CMD_GET_FW_VER                        0x40
  35 #define ILITEK_TP_CMD_GET_PRL_VER                       0x42
  36 #define ILITEK_TP_CMD_GET_MCU_VER                       0x61
  37 #define ILITEK_TP_CMD_GET_IC_MODE                       0xC0
  38
  39 #define ILITEK_TP_I2C_REPORT_ID                         0x48
  40
  41 #define REPORT_COUNT_ADDRESS                            61
  42 #define ILITEK_SUPPORT_MAX_POINT                        40
  43
  44 struct ilitek_protocol_info {
  45         u16 ver;
  46         u8 ver_major;
  47 };
  48
  49 struct ilitek_ts_data {
  50         struct i2c_client               *client;
  51         struct gpio_desc                *reset_gpio;
  52         struct input_dev                *input_dev;
  53         struct touchscreen_properties   prop;
  54
  55         const struct ilitek_protocol_map *ptl_cb_func;
  56         struct ilitek_protocol_info     ptl;
  57
  58         char                            product_id[30];
  59         u16                             mcu_ver;
  60         u8                              ic_mode;
  61         u8                              firmware_ver[8];
  62
  63         s32                             reset_time;
  64         s32                             screen_max_x;
  65         s32                             screen_max_y;
  66         s32                             screen_min_x;
  67         s32                             screen_min_y;
  68         s32                             max_tp;
  69 };
  70
  71 struct ilitek_protocol_map {
  72         u16 cmd;
  73         const char *name;
  74         int (*func)(struct ilitek_ts_data *ts, u16 cmd, u8 *inbuf, u8 *outbuf);
  75 };
  76
  77 enum ilitek_cmds {
  78         /* common cmds */
  79         GET_PTL_VER = 0,
  80         GET_FW_VER,
  81         GET_SCRN_RES,
  82         GET_TP_RES,
  83         GET_IC_MODE,
  84         GET_MCU_VER,
  85         SET_IC_SLEEP,
  86         SET_IC_WAKE,
  87
  88         /* ALWAYS keep at the end */
  89         MAX_CMD_CNT
  90 };
  91
  92 /* ILITEK I2C R/W APIs */
  93 static int ilitek_i2c_write_and_read(struct ilitek_ts_data *ts,
  94                                      u8 *cmd, int write_len, int delay,
  95                                      u8 *data, int read_len)
  96 {
  97         int error;
  98         struct i2c_client *client = ts->client;
  99         struct i2c_msg msgs[] = {
 100                 {
 101                         .addr = client->addr,
 102                         .flags = 0,
 103                         .len = write_len,
 104                         .buf = cmd,
 105                 },
 106                 {
 107                         .addr = client->addr,
 108                         .flags = I2C_M_RD,
 109                         .len = read_len,
 110                         .buf = data,
 111                 },
 112         };
 113
 114         if (delay == 0 && write_len > 0 && read_len > 0) {
 115                 error = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
 116                 if (error < 0)
 117                         return error;
 118         } else {
 119                 if (write_len > 0) {
 120                         error = i2c_transfer(client->adapter, msgs, 1);
 121                         if (error < 0)
 122                                 return error;
 123                 }
 124                 if (delay > 0)
 125                         mdelay(delay);
 126
 127                 if (read_len > 0) {
 128                         error = i2c_transfer(client->adapter, msgs + 1, 1);
 129                         if (error < 0)
 130                                 return error;
 131                 }
 132         }
 133
 134         return 0;
 135 }
 136
 137 /* ILITEK ISR APIs */
 138 static void ilitek_touch_down(struct ilitek_ts_data *ts, unsigned int id,
 139                               unsigned int x, unsigned int y)
 140 {
 141         struct input_dev *input = ts->input_dev;
 142
 143         input_mt_slot(input, id);
 144         input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
 145
 146         touchscreen_report_pos(input, &ts->prop, x, y, true);
 147 }
 148
 149 static int ilitek_process_and_report_v6(struct ilitek_ts_data *ts)
 150 {
 151         int error = 0;
 152         u8 buf[512];
 153         int packet_len = 5;
 154         int packet_max_point = 10;
 155         int report_max_point;
 156         int i, count;
 157         struct input_dev *input = ts->input_dev;
 158         struct device *dev = &ts->client->dev;
 159         unsigned int x, y, status, id;
 160
 161         error = ilitek_i2c_write_and_read(ts, NULL, 0, 0, buf, 64);
 162         if (error) {
 163                 dev_err(dev, "get touch info failed, err:%d\n", error);
 164                 return error;
 165         }
 166
 167         if (buf[0] != ILITEK_TP_I2C_REPORT_ID) {
 168                 dev_err(dev, "get touch info failed. Wrong id: 0x%02X\n", buf[0]);
 169                 return -EINVAL;
 170         }
 171
 172         report_max_point = buf[REPORT_COUNT_ADDRESS];
 173         if (report_max_point > ts->max_tp) {
 174                 dev_err(dev, "FW report max point:%d > panel info. max:%d\n",
 175                         report_max_point, ts->max_tp);
 176                 return -EINVAL;
 177         }
 178
 179         count = DIV_ROUND_UP(report_max_point, packet_max_point);
 180         for (i = 1; i < count; i++) {
 181                 error = ilitek_i2c_write_and_read(ts, NULL, 0, 0,
 182                                                   buf + i * 64, 64);
 183                 if (error) {
 184                         dev_err(dev, "get touch info. failed, cnt:%d, err:%d\n",
 185                                 count, error);
 186                         return error;
 187                 }
 188         }
 189
 190         for (i = 0; i < report_max_point; i++) {
 191                 status = buf[i * packet_len + 1] & 0x40;
 192                 if (!status)
 193                         continue;
 194
 195                 id = buf[i * packet_len + 1] & 0x3F;
 196
 197                 x = get_unaligned_le16(buf + i * packet_len + 2);
 198                 y = get_unaligned_le16(buf + i * packet_len + 4);
 199
 200                 if (x > ts->screen_max_x || x < ts->screen_min_x ||
 201                     y > ts->screen_max_y || y < ts->screen_min_y) {
 202                         dev_warn(dev, "invalid position, X[%d,%u,%d], Y[%d,%u,%d]\n",
 203                                  ts->screen_min_x, x, ts->screen_max_x,
 204                                  ts->screen_min_y, y, ts->screen_max_y);
 205                         continue;
 206                 }
 207
 208                 ilitek_touch_down(ts, id, x, y);
 209         }
 210
 211         input_mt_sync_frame(input);
 212         input_sync(input);
 213
 214         return 0;
 215 }
 216
 217 /* APIs of cmds for ILITEK Touch IC */
 218 static int api_protocol_set_cmd(struct ilitek_ts_data *ts,
 219                                 u16 idx, u8 *inbuf, u8 *outbuf)
 220 {
 221         u16 cmd;
 222         int error;
 223
 224         if (idx >= MAX_CMD_CNT)
 225                 return -EINVAL;
 226
 227         cmd = ts->ptl_cb_func[idx].cmd;
 228         error = ts->ptl_cb_func[idx].func(ts, cmd, inbuf, outbuf);
 229         if (error)
 230                 return error;
 231
 232         return 0;
 233 }
 234
 235 static int api_protocol_get_ptl_ver(struct ilitek_ts_data *ts,
 236                                     u16 cmd, u8 *inbuf, u8 *outbuf)
 237 {
 238         int error;
 239         u8 buf[64];
 240
 241         buf[0] = cmd;
 242         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 3);
 243         if (error)
 244                 return error;
 245
 246         ts->ptl.ver = get_unaligned_be16(outbuf);
 247         ts->ptl.ver_major = outbuf[0];
 248
 249         return 0;
 250 }
 251
 252 static int api_protocol_get_mcu_ver(struct ilitek_ts_data *ts,
 253                                     u16 cmd, u8 *inbuf, u8 *outbuf)
 254 {
 255         int error;
 256         u8 buf[64];
 257
 258         buf[0] = cmd;
 259         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 32);
 260         if (error)
 261                 return error;
 262
 263         ts->mcu_ver = get_unaligned_le16(outbuf);
 264         memset(ts->product_id, 0, sizeof(ts->product_id));
 265         memcpy(ts->product_id, outbuf + 6, 26);
 266
 267         return 0;
 268 }
 269
 270 static int api_protocol_get_fw_ver(struct ilitek_ts_data *ts,
 271                                    u16 cmd, u8 *inbuf, u8 *outbuf)
 272 {
 273         int error;
 274         u8 buf[64];
 275
 276         buf[0] = cmd;
 277         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 8);
 278         if (error)
 279                 return error;
 280
 281         memcpy(ts->firmware_ver, outbuf, 8);
 282
 283         return 0;
 284 }
 285
 286 static int api_protocol_get_scrn_res(struct ilitek_ts_data *ts,
 287                                      u16 cmd, u8 *inbuf, u8 *outbuf)
 288 {
 289         int error;
 290         u8 buf[64];
 291
 292         buf[0] = cmd;
 293         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 8);
 294         if (error)
 295                 return error;
 296
 297         ts->screen_min_x = get_unaligned_le16(outbuf);
 298         ts->screen_min_y = get_unaligned_le16(outbuf + 2);
 299         ts->screen_max_x = get_unaligned_le16(outbuf + 4);
 300         ts->screen_max_y = get_unaligned_le16(outbuf + 6);
 301
 302         return 0;
 303 }
 304
 305 static int api_protocol_get_tp_res(struct ilitek_ts_data *ts,
 306                                    u16 cmd, u8 *inbuf, u8 *outbuf)
 307 {
 308         int error;
 309         u8 buf[64];
 310
 311         buf[0] = cmd;
 312         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 15);
 313         if (error)
 314                 return error;
 315
 316         ts->max_tp = outbuf[8];
 317         if (ts->max_tp > ILITEK_SUPPORT_MAX_POINT) {
 318                 dev_err(&ts->client->dev, "Invalid MAX_TP:%d from FW\n",
 319                         ts->max_tp);
 320                 return -EINVAL;
 321         }
 322
 323         return 0;
 324 }
 325
 326 static int api_protocol_get_ic_mode(struct ilitek_ts_data *ts,
 327                                     u16 cmd, u8 *inbuf, u8 *outbuf)
 328 {
 329         int error;
 330         u8 buf[64];
 331
 332         buf[0] = cmd;
 333         error = ilitek_i2c_write_and_read(ts, buf, 1, 5, outbuf, 2);
 334         if (error)
 335                 return error;
 336
 337         ts->ic_mode = outbuf[0];
 338         return 0;
 339 }
 340
 341 static int api_protocol_set_ic_sleep(struct ilitek_ts_data *ts,
 342                                      u16 cmd, u8 *inbuf, u8 *outbuf)
 343 {
 344         u8 buf[64];
 345
 346         buf[0] = cmd;
 347         return ilitek_i2c_write_and_read(ts, buf, 1, 0, NULL, 0);
 348 }
 349
 350 static int api_protocol_set_ic_wake(struct ilitek_ts_data *ts,
 351                                     u16 cmd, u8 *inbuf, u8 *outbuf)
 352 {
 353         u8 buf[64];
 354
 355         buf[0] = cmd;
 356         return ilitek_i2c_write_and_read(ts, buf, 1, 0, NULL, 0);
 357 }
 358
 359 static const struct ilitek_protocol_map ptl_func_map[] = {
 360         /* common cmds */
 361         [GET_PTL_VER] = {
 362                 ILITEK_TP_CMD_GET_PRL_VER, "GET_PTL_VER",
 363                 api_protocol_get_ptl_ver
 364         },
 365         [GET_FW_VER] = {
 366                 ILITEK_TP_CMD_GET_FW_VER, "GET_FW_VER",
 367                 api_protocol_get_fw_ver
 368         },
 369         [GET_SCRN_RES] = {
 370                 ILITEK_TP_CMD_GET_SCRN_RES, "GET_SCRN_RES",
 371                 api_protocol_get_scrn_res
 372         },
 373         [GET_TP_RES] = {
 374                 ILITEK_TP_CMD_GET_TP_RES, "GET_TP_RES",
 375                 api_protocol_get_tp_res
 376         },
 377         [GET_IC_MODE] = {
 378                 ILITEK_TP_CMD_GET_IC_MODE, "GET_IC_MODE",
 379                            api_protocol_get_ic_mode
 380         },
 381         [GET_MCU_VER] = {
 382                 ILITEK_TP_CMD_GET_MCU_VER, "GET_MOD_VER",
 383                            api_protocol_get_mcu_ver
 384         },
 385         [SET_IC_SLEEP] = {
 386                 ILITEK_TP_CMD_SET_IC_SLEEP, "SET_IC_SLEEP",
 387                 api_protocol_set_ic_sleep
 388         },
 389         [SET_IC_WAKE] = {
 390                 ILITEK_TP_CMD_SET_IC_WAKE, "SET_IC_WAKE",
 391                 api_protocol_set_ic_wake
 392         },
 393 };
 394
 395 /* Probe APIs */
 396 static void ilitek_reset(struct ilitek_ts_data *ts, int delay)
 397 {
 398         if (ts->reset_gpio) {
 399                 gpiod_set_value(ts->reset_gpio, 1);
 400                 mdelay(10);
 401                 gpiod_set_value(ts->reset_gpio, 0);
 402                 mdelay(delay);
 403         }
 404 }
 405
 406 static int ilitek_protocol_init(struct ilitek_ts_data *ts)
 407 {
 408         int error;
 409         u8 outbuf[64];
 410
 411         ts->ptl_cb_func = ptl_func_map;
 412         ts->reset_time = 600;
 413
 414         error = api_protocol_set_cmd(ts, GET_PTL_VER, NULL, outbuf);
 415         if (error)
 416                 return error;
 417
 418         /* Protocol v3 is not support currently */
 419         if (ts->ptl.ver_major == 0x3 ||
 420             ts->ptl.ver == BL_V1_6 ||
 421             ts->ptl.ver == BL_V1_7)
 422                 return -EINVAL;
 423
 424         return 0;
 425 }
 426
 427 static int ilitek_read_tp_info(struct ilitek_ts_data *ts, bool boot)
 428 {
 429         u8 outbuf[256];
 430         int error;
 431
 432         error = api_protocol_set_cmd(ts, GET_PTL_VER, NULL, outbuf);
 433         if (error)
 434                 return error;
 435
 436         error = api_protocol_set_cmd(ts, GET_MCU_VER, NULL, outbuf);
 437         if (error)
 438                 return error;
 439
 440         error = api_protocol_set_cmd(ts, GET_FW_VER, NULL, outbuf);
 441         if (error)
 442                 return error;
 443
 444         if (boot) {
 445                 error = api_protocol_set_cmd(ts, GET_SCRN_RES, NULL,
 446                                              outbuf);
 447                 if (error)
 448                         return error;
 449         }
 450
 451         error = api_protocol_set_cmd(ts, GET_TP_RES, NULL, outbuf);
 452         if (error)
 453                 return error;
 454
 455         error = api_protocol_set_cmd(ts, GET_IC_MODE, NULL, outbuf);
 456         if (error)
 457                 return error;
 458
 459         return 0;
 460 }
 461
 462 static int ilitek_input_dev_init(struct device *dev, struct ilitek_ts_data *ts)
 463 {
 464         int error;
 465         struct input_dev *input;
 466
 467         input = devm_input_allocate_device(dev);
 468         if (!input)
 469                 return -ENOMEM;
 470
 471         ts->input_dev = input;
 472         input->name = ILITEK_TS_NAME;
 473         input->id.bustype = BUS_I2C;
 474
 475         __set_bit(INPUT_PROP_DIRECT, input->propbit);
 476
 477         input_set_abs_params(input, ABS_MT_POSITION_X,
 478                              ts->screen_min_x, ts->screen_max_x, 0, 0);
 479         input_set_abs_params(input, ABS_MT_POSITION_Y,
 480                              ts->screen_min_y, ts->screen_max_y, 0, 0);
 481
 482         touchscreen_parse_properties(input, true, &ts->prop);
 483
 484         error = input_mt_init_slots(input, ts->max_tp,
 485                                     INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 486         if (error) {
 487                 dev_err(dev, "initialize MT slots failed, err:%d\n", error);
 488                 return error;
 489         }
 490
 491         error = input_register_device(input);
 492         if (error) {
 493                 dev_err(dev, "register input device failed, err:%d\n", error);
 494                 return error;
 495         }
 496
 497         return 0;
 498 }
 499
 500 static irqreturn_t ilitek_i2c_isr(int irq, void *dev_id)
 501 {
 502         struct ilitek_ts_data *ts = dev_id;
 503         int error;
 504
 505         error = ilitek_process_and_report_v6(ts);
 506         if (error < 0) {
 507                 dev_err(&ts->client->dev, "[%s] err:%d\n", __func__, error);
 508                 return IRQ_NONE;
 509         }
 510
 511         return IRQ_HANDLED;
 512 }
 513
 514 static ssize_t firmware_version_show(struct device *dev,
 515                                      struct device_attribute *attr, char *buf)
 516 {
 517         struct i2c_client *client = to_i2c_client(dev);
 518         struct ilitek_ts_data *ts = i2c_get_clientdata(client);
 519
 520         return sysfs_emit(buf,
 521                           "fw version: [%02X%02X.%02X%02X.%02X%02X.%02X%02X]\n",
 522                           ts->firmware_ver[0], ts->firmware_ver[1],
 523                           ts->firmware_ver[2], ts->firmware_ver[3],
 524                           ts->firmware_ver[4], ts->firmware_ver[5],
 525                           ts->firmware_ver[6], ts->firmware_ver[7]);
 526 }
 527 static DEVICE_ATTR_RO(firmware_version);
 528
 529 static ssize_t product_id_show(struct device *dev,
 530                                struct device_attribute *attr, char *buf)
 531 {
 532         struct i2c_client *client = to_i2c_client(dev);
 533         struct ilitek_ts_data *ts = i2c_get_clientdata(client);
 534
 535         return sysfs_emit(buf, "product id: [%04X], module: [%s]\n",
 536                           ts->mcu_ver, ts->product_id);
 537 }
 538 static DEVICE_ATTR_RO(product_id);
 539
 540 static struct attribute *ilitek_sysfs_attrs[] = {
 541         &dev_attr_firmware_version.attr,
 542         &dev_attr_product_id.attr,
 543         NULL
 544 };
 545 ATTRIBUTE_GROUPS(ilitek_sysfs);
 546
 547 static int ilitek_ts_i2c_probe(struct i2c_client *client)
 548 {
 549         struct ilitek_ts_data *ts;
 550         struct device *dev = &client->dev;
 551         int error;
 552
 553         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 554                 dev_err(dev, "i2c check functionality failed\n");
 555                 return -ENXIO;
 556         }
 557
 558         ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);
 559         if (!ts)
 560                 return -ENOMEM;
 561
 562         ts->client = client;
 563         i2c_set_clientdata(client, ts);
 564
 565         ts->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
 566         if (IS_ERR(ts->reset_gpio)) {
 567                 error = PTR_ERR(ts->reset_gpio);
 568                 dev_err(dev, "request gpiod failed: %d", error);
 569                 return error;
 570         }
 571
 572         ilitek_reset(ts, 1000);
 573
 574         error = ilitek_protocol_init(ts);
 575         if (error) {
 576                 dev_err(dev, "protocol init failed: %d", error);
 577                 return error;
 578         }
 579
 580         error = ilitek_read_tp_info(ts, true);
 581         if (error) {
 582                 dev_err(dev, "read tp info failed: %d", error);
 583                 return error;
 584         }
 585
 586         error = ilitek_input_dev_init(dev, ts);
 587         if (error) {
 588                 dev_err(dev, "input dev init failed: %d", error);
 589                 return error;
 590         }
 591
 592         error = devm_request_threaded_irq(dev, ts->client->irq,
 593                                           NULL, ilitek_i2c_isr, IRQF_ONESHOT,
 594                                           "ilitek_touch_irq", ts);
 595         if (error) {
 596                 dev_err(dev, "request threaded irq failed: %d\n", error);
 597                 return error;
 598         }
 599
 600         return 0;
 601 }
 602
 603 static int ilitek_suspend(struct device *dev)
 604 {
 605         struct i2c_client *client = to_i2c_client(dev);
 606         struct ilitek_ts_data *ts = i2c_get_clientdata(client);
 607         int error;
 608
 609         disable_irq(client->irq);
 610
 611         if (!device_may_wakeup(dev)) {
 612                 error = api_protocol_set_cmd(ts, SET_IC_SLEEP, NULL, NULL);
 613                 if (error)
 614                         return error;
 615         }
 616
 617         return 0;
 618 }
 619
 620 static int ilitek_resume(struct device *dev)
 621 {
 622         struct i2c_client *client = to_i2c_client(dev);
 623         struct ilitek_ts_data *ts = i2c_get_clientdata(client);
 624         int error;
 625
 626         if (!device_may_wakeup(dev)) {
 627                 error = api_protocol_set_cmd(ts, SET_IC_WAKE, NULL, NULL);
 628                 if (error)
 629                         return error;
 630
 631                 ilitek_reset(ts, ts->reset_time);
 632         }
 633
 634         enable_irq(client->irq);
 635
 636         return 0;
 637 }
 638
 639 static DEFINE_SIMPLE_DEV_PM_OPS(ilitek_pm_ops, ilitek_suspend, ilitek_resume);
 640
 641 static const struct i2c_device_id ilitek_ts_i2c_id[] = {
 642         { ILITEK_TS_NAME },
 643         { }
 644 };
 645 MODULE_DEVICE_TABLE(i2c, ilitek_ts_i2c_id);
 646
 647 #ifdef CONFIG_ACPI
 648 static const struct acpi_device_id ilitekts_acpi_id[] = {
 649         { "ILTK0001", 0 },
 650         { },
 651 };
 652 MODULE_DEVICE_TABLE(acpi, ilitekts_acpi_id);
 653 #endif
 654
 655 #ifdef CONFIG_OF
 656 static const struct of_device_id ilitek_ts_i2c_match[] = {
 657         {.compatible = "ilitek,ili2130",},
 658         {.compatible = "ilitek,ili2131",},
 659         {.compatible = "ilitek,ili2132",},
 660         {.compatible = "ilitek,ili2316",},
 661         {.compatible = "ilitek,ili2322",},
 662         {.compatible = "ilitek,ili2323",},
 663         {.compatible = "ilitek,ili2326",},
 664         {.compatible = "ilitek,ili2520",},
 665         {.compatible = "ilitek,ili2521",},
 666         { },
 667 };
 668 MODULE_DEVICE_TABLE(of, ilitek_ts_i2c_match);
 669 #endif
 670
 671 static struct i2c_driver ilitek_ts_i2c_driver = {
 672         .driver = {
 673                 .name = ILITEK_TS_NAME,
 674                 .dev_groups = ilitek_sysfs_groups,
 675                 .pm = pm_sleep_ptr(&ilitek_pm_ops),
 676                 .of_match_table = of_match_ptr(ilitek_ts_i2c_match),
 677                 .acpi_match_table = ACPI_PTR(ilitekts_acpi_id),
 678         },
 679         .probe = ilitek_ts_i2c_probe,
 680         .id_table = ilitek_ts_i2c_id,
 681 };
 682 module_i2c_driver(ilitek_ts_i2c_driver);
 683
 684 MODULE_AUTHOR("ILITEK");
 685 MODULE_DESCRIPTION("ILITEK I2C Touchscreen Driver");
 686 MODULE_LICENSE("GPL");