1 // SPDX-License-Identifier: GPL-2.0 2 // Melfas MMS114/MMS136/MMS152 touchscreen device driver 3 // 4 // Copyright (c) 2012 Samsung Electronics Co., Ltd. 5 // Author: Joonyoung Shim <jy0922.shim@samsung.com> 6 7 #include <linux/bitfield.h> 8 #include <linux/bits.h> 9 #include <linux/module.h> 10 #include <linux/delay.h> 11 #include <linux/of.h> 12 #include <linux/i2c.h> 13 #include <linux/input/mt.h> 14 #include <linux/input/touchscreen.h> 15 #include <linux/interrupt.h> 16 #include <linux/regulator/consumer.h> 17 #include <linux/slab.h> 18 19 /* Write only registers */ 20 #define MMS114_MODE_CONTROL 0x01 21 #define MMS114_OPERATION_MODE_MASK 0xE 22 #define MMS114_ACTIVE BIT(1) 23 24 #define MMS114_XY_RESOLUTION_H 0x02 25 #define MMS114_X_RESOLUTION 0x03 26 #define MMS114_Y_RESOLUTION 0x04 27 #define MMS114_CONTACT_THRESHOLD 0x05 28 #define MMS114_MOVING_THRESHOLD 0x06 29 30 /* Read only registers */ 31 #define MMS114_PACKET_SIZE 0x0F 32 #define MMS114_INFORMATION 0x10 33 #define MMS114_TSP_REV 0xF0 34 35 #define MMS152_FW_REV 0xE1 36 #define MMS152_COMPAT_GROUP 0xF2 37 38 /* Minimum delay time is 50us between stop and start signal of i2c */ 39 #define MMS114_I2C_DELAY 50 40 41 /* 200ms needs after power on */ 42 #define MMS114_POWERON_DELAY 200 43 44 /* Touchscreen absolute values */ 45 #define MMS114_MAX_AREA 0xff 46 47 #define MMS114_MAX_TOUCHKEYS 15 48 #define MMS114_MAX_TOUCH 10 49 #define MMS114_EVENT_SIZE 8 50 #define MMS136_EVENT_SIZE 6 51 52 /* Touch type */ 53 #define MMS114_TYPE_NONE 0 54 #define MMS114_TYPE_TOUCHSCREEN 1 55 #define MMS114_TYPE_TOUCHKEY 2 56 57 struct mms114_data { 58 const struct mms_chip *chip; 59 struct i2c_client *client; 60 struct input_dev *input_dev; 61 struct regulator *core_reg; 62 struct regulator *io_reg; 63 struct touchscreen_properties props; 64 unsigned int contact_threshold; 65 unsigned int moving_threshold; 66 67 u32 keycodes[MMS114_MAX_TOUCHKEYS]; 68 int num_keycodes; 69 70 /* Use cache data for mode control register(write only) */ 71 u8 cache_mode_control; 72 }; 73 74 struct mms_chip { 75 const char *name; 76 int event_size; 77 bool has_config_regs; 78 int (*get_version)(struct mms114_data *data); 79 }; 80 81 #define MMS114_FLAGS_ID_MASK GENMASK(3, 0) 82 #define MMS114_FLAGS_TYPE_MASK GENMASK(6, 5) 83 #define MMS114_FLAGS_PRESSED_MASK BIT(7) 84 85 #define MMS114_XY_HI_X_MASK GENMASK(3, 0) 86 #define MMS114_XY_HI_Y_MASK GENMASK(7, 4) 87 88 struct mms114_touch { 89 u8 flags; 90 u8 xy_hi; 91 u8 x_lo; 92 u8 y_lo; 93 u8 width; 94 u8 strength; 95 u8 reserved[2]; 96 } __packed; 97 98 static int __mms114_read_reg(struct mms114_data *data, u8 reg, 99 unsigned int len, void *val) 100 { 101 struct i2c_client *client = data->client; 102 struct i2c_msg xfer[2]; 103 u8 buf = reg; 104 int error; 105 106 if (WARN_ON(reg <= MMS114_MODE_CONTROL && reg + len > MMS114_MODE_CONTROL)) 107 return -EINVAL; 108 109 /* Write register */ 110 xfer[0].addr = client->addr; 111 xfer[0].flags = client->flags & I2C_M_TEN; 112 xfer[0].len = 1; 113 xfer[0].buf = &buf; 114 115 /* Read data */ 116 xfer[1].addr = client->addr; 117 xfer[1].flags = (client->flags & I2C_M_TEN) | I2C_M_RD; 118 xfer[1].len = len; 119 xfer[1].buf = val; 120 121 error = i2c_transfer(client->adapter, xfer, 2); 122 if (error != 2) { 123 dev_err(&client->dev, 124 "%s: i2c transfer failed (%d)\n", __func__, error); 125 return error < 0 ? error : -EIO; 126 } 127 usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50); 128 129 return 0; 130 } 131 132 static int mms114_read_reg(struct mms114_data *data, u8 reg) 133 { 134 u8 val; 135 int error; 136 137 if (reg == MMS114_MODE_CONTROL) 138 return data->cache_mode_control; 139 140 error = __mms114_read_reg(data, reg, 1, &val); 141 return error < 0 ? error : val; 142 } 143 144 static int mms114_write_reg(struct mms114_data *data, u8 reg, u8 val) 145 { 146 struct i2c_client *client = data->client; 147 u8 buf[2]; 148 int error; 149 150 buf[0] = reg; 151 buf[1] = val; 152 153 error = i2c_master_send(client, buf, 2); 154 if (error != 2) { 155 dev_err(&client->dev, 156 "%s: i2c send failed (%d)\n", __func__, error); 157 return error < 0 ? error : -EIO; 158 } 159 usleep_range(MMS114_I2C_DELAY, MMS114_I2C_DELAY + 50); 160 161 if (reg == MMS114_MODE_CONTROL) 162 data->cache_mode_control = val; 163 164 return 0; 165 } 166 167 static int mms114_get_version(struct mms114_data *data) 168 { 169 struct device *dev = &data->client->dev; 170 u8 buf[6]; 171 int error; 172 173 error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf); 174 if (error) 175 return error; 176 177 dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n", 178 buf[0], buf[1], buf[3]); 179 return 0; 180 } 181 182 static int mms152_get_version(struct mms114_data *data) 183 { 184 struct device *dev = &data->client->dev; 185 u8 buf[3]; 186 int group; 187 int error; 188 189 error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf); 190 if (error) 191 return error; 192 193 group = i2c_smbus_read_byte_data(data->client, MMS152_COMPAT_GROUP); 194 if (group < 0) 195 return group; 196 197 dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n", 198 buf[0], buf[1], buf[2], group); 199 return 0; 200 } 201 202 static int mms345l_get_version(struct mms114_data *data) 203 { 204 struct device *dev = &data->client->dev; 205 u8 buf[3]; 206 int error; 207 208 error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf); 209 if (error) 210 return error; 211 212 dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x\n", 213 buf[0], buf[1], buf[2]); 214 return 0; 215 } 216 217 static const struct mms_chip mms114_descriptor = { 218 .name = "MMS114", 219 .event_size = MMS114_EVENT_SIZE, 220 .has_config_regs = true, 221 .get_version = mms114_get_version, 222 }; 223 224 static const struct mms_chip mms134s_descriptor = { 225 .name = "MMS134S", 226 .event_size = MMS136_EVENT_SIZE, 227 .has_config_regs = true, 228 .get_version = mms114_get_version, 229 }; 230 231 static const struct mms_chip mms136_descriptor = { 232 .name = "MMS136", 233 .event_size = MMS136_EVENT_SIZE, 234 .has_config_regs = true, 235 .get_version = mms114_get_version, 236 }; 237 238 static const struct mms_chip mms152_descriptor = { 239 .name = "MMS152", 240 .event_size = MMS114_EVENT_SIZE, 241 .has_config_regs = false, 242 .get_version = mms152_get_version, 243 }; 244 245 static const struct mms_chip mms345l_descriptor = { 246 .name = "MMS345L", 247 .event_size = MMS114_EVENT_SIZE, 248 .has_config_regs = false, 249 .get_version = mms345l_get_version, 250 }; 251 252 static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *touch) 253 { 254 struct i2c_client *client = data->client; 255 struct input_dev *input_dev = data->input_dev; 256 unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags); 257 unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, touch->flags); 258 bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags); 259 unsigned int x; 260 unsigned int y; 261 262 if (id == 0 || id > MMS114_MAX_TOUCH) { 263 dev_err(&client->dev, "Wrong touch id (%d)\n", id); 264 return; 265 } 266 267 id--; 268 x = touch->x_lo | FIELD_GET(MMS114_XY_HI_X_MASK, touch->xy_hi) << 8; 269 y = touch->y_lo | FIELD_GET(MMS114_XY_HI_Y_MASK, touch->xy_hi) << 8; 270 271 dev_dbg(&client->dev, 272 "id: %d, type: %d, pressed: %d, x: %d, y: %d, width: %d, strength: %d\n", 273 id, type, pressed, 274 x, y, touch->width, touch->strength); 275 276 input_mt_slot(input_dev, id); 277 input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, pressed); 278 279 if (pressed) { 280 touchscreen_report_pos(input_dev, &data->props, x, y, true); 281 input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, touch->width); 282 input_report_abs(input_dev, ABS_MT_PRESSURE, touch->strength); 283 } 284 } 285 286 static void mms114_process_touchkey(struct mms114_data *data, 287 struct mms114_touch *touch) 288 { 289 struct i2c_client *client = data->client; 290 struct input_dev *input_dev = data->input_dev; 291 unsigned int keycode_id; 292 unsigned int id = FIELD_GET(MMS114_FLAGS_ID_MASK, touch->flags); 293 bool pressed = FIELD_GET(MMS114_FLAGS_PRESSED_MASK, touch->flags); 294 295 if (id == 0) 296 return; 297 298 if (id > data->num_keycodes) { 299 dev_err(&client->dev, "Wrong touch id for touchkey (%d)\n", 300 id); 301 return; 302 } 303 304 keycode_id = id - 1; 305 dev_dbg(&client->dev, "keycode id: %d, pressed: %d\n", keycode_id, 306 pressed); 307 308 input_report_key(input_dev, data->keycodes[keycode_id], pressed); 309 } 310 311 static irqreturn_t mms114_interrupt(int irq, void *dev_id) 312 { 313 struct mms114_data *data = dev_id; 314 struct i2c_client *client = data->client; 315 struct mms114_touch touch[MMS114_MAX_TOUCH]; 316 struct mms114_touch *t; 317 int event_size = data->chip->event_size; 318 int packet_size; 319 int touch_size; 320 int index; 321 int error; 322 323 packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE); 324 if (packet_size <= 0) 325 goto out; 326 327 if (packet_size > sizeof(touch)) { 328 dev_err(&client->dev, "Invalid packet size %d (max %zu)\n", 329 packet_size, sizeof(touch)); 330 goto out; 331 } 332 333 touch_size = packet_size / event_size; 334 335 error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size, touch); 336 if (error) 337 goto out; 338 339 for (index = 0; index < touch_size; index++) { 340 t = (struct mms114_touch *)((u8 *)touch + index * event_size); 341 unsigned int type = FIELD_GET(MMS114_FLAGS_TYPE_MASK, t->flags); 342 343 switch (type) { 344 case MMS114_TYPE_TOUCHSCREEN: 345 mms114_process_mt(data, t); 346 break; 347 348 case MMS114_TYPE_TOUCHKEY: 349 mms114_process_touchkey(data, t); 350 break; 351 352 default: 353 dev_err(&client->dev, "Wrong touch type (%d)\n", 354 type); 355 break; 356 } 357 } 358 359 input_mt_report_pointer_emulation(data->input_dev, true); 360 input_sync(data->input_dev); 361 362 out: 363 return IRQ_HANDLED; 364 } 365 366 static int mms114_set_active(struct mms114_data *data, bool active) 367 { 368 int val; 369 370 val = mms114_read_reg(data, MMS114_MODE_CONTROL); 371 if (val < 0) 372 return val; 373 374 val &= ~MMS114_OPERATION_MODE_MASK; 375 376 /* If active is false, sleep mode */ 377 if (active) 378 val |= MMS114_ACTIVE; 379 380 return mms114_write_reg(data, MMS114_MODE_CONTROL, val); 381 } 382 383 static int mms114_setup_regs(struct mms114_data *data) 384 { 385 const struct touchscreen_properties *props = &data->props; 386 int val; 387 int error; 388 389 error = data->chip->get_version(data); 390 if (error) 391 return error; 392 393 if (!data->chip->has_config_regs) 394 return 0; 395 396 error = mms114_set_active(data, true); 397 if (error < 0) 398 return error; 399 400 val = (props->max_x >> 8) & 0xf; 401 val |= ((props->max_y >> 8) & 0xf) << 4; 402 error = mms114_write_reg(data, MMS114_XY_RESOLUTION_H, val); 403 if (error < 0) 404 return error; 405 406 val = props->max_x & 0xff; 407 error = mms114_write_reg(data, MMS114_X_RESOLUTION, val); 408 if (error < 0) 409 return error; 410 411 val = props->max_y & 0xff; 412 error = mms114_write_reg(data, MMS114_Y_RESOLUTION, val); 413 if (error < 0) 414 return error; 415 416 if (data->contact_threshold) { 417 error = mms114_write_reg(data, MMS114_CONTACT_THRESHOLD, 418 data->contact_threshold); 419 if (error < 0) 420 return error; 421 } 422 423 if (data->moving_threshold) { 424 error = mms114_write_reg(data, MMS114_MOVING_THRESHOLD, 425 data->moving_threshold); 426 if (error < 0) 427 return error; 428 } 429 430 return 0; 431 } 432 433 static int mms114_start(struct mms114_data *data) 434 { 435 struct i2c_client *client = data->client; 436 int error; 437 438 error = regulator_enable(data->core_reg); 439 if (error) { 440 dev_err(&client->dev, "Failed to enable avdd: %d\n", error); 441 return error; 442 } 443 444 error = regulator_enable(data->io_reg); 445 if (error) { 446 dev_err(&client->dev, "Failed to enable vdd: %d\n", error); 447 regulator_disable(data->core_reg); 448 return error; 449 } 450 451 msleep(MMS114_POWERON_DELAY); 452 453 error = mms114_setup_regs(data); 454 if (error < 0) { 455 regulator_disable(data->io_reg); 456 regulator_disable(data->core_reg); 457 return error; 458 } 459 460 enable_irq(client->irq); 461 462 return 0; 463 } 464 465 static void mms114_stop(struct mms114_data *data) 466 { 467 struct i2c_client *client = data->client; 468 int error; 469 470 disable_irq(client->irq); 471 472 error = regulator_disable(data->io_reg); 473 if (error) 474 dev_warn(&client->dev, "Failed to disable vdd: %d\n", error); 475 476 error = regulator_disable(data->core_reg); 477 if (error) 478 dev_warn(&client->dev, "Failed to disable avdd: %d\n", error); 479 } 480 481 static int mms114_input_open(struct input_dev *dev) 482 { 483 struct mms114_data *data = input_get_drvdata(dev); 484 485 return mms114_start(data); 486 } 487 488 static void mms114_input_close(struct input_dev *dev) 489 { 490 struct mms114_data *data = input_get_drvdata(dev); 491 492 mms114_stop(data); 493 } 494 495 static int mms114_parse_legacy_bindings(struct mms114_data *data) 496 { 497 struct device *dev = &data->client->dev; 498 struct touchscreen_properties *props = &data->props; 499 500 if (device_property_read_u32(dev, "x-size", &props->max_x)) { 501 dev_dbg(dev, "failed to get legacy x-size property\n"); 502 return -EINVAL; 503 } 504 505 if (device_property_read_u32(dev, "y-size", &props->max_y)) { 506 dev_dbg(dev, "failed to get legacy y-size property\n"); 507 return -EINVAL; 508 } 509 510 device_property_read_u32(dev, "contact-threshold", 511 &data->contact_threshold); 512 device_property_read_u32(dev, "moving-threshold", 513 &data->moving_threshold); 514 515 if (device_property_read_bool(dev, "x-invert")) 516 props->invert_x = true; 517 if (device_property_read_bool(dev, "y-invert")) 518 props->invert_y = true; 519 520 props->swap_x_y = false; 521 522 return 0; 523 } 524 525 static int mms114_probe(struct i2c_client *client) 526 { 527 struct mms114_data *data; 528 struct input_dev *input_dev; 529 int error; 530 int i; 531 532 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 533 dev_err(&client->dev, "Not supported I2C adapter\n"); 534 return -ENODEV; 535 } 536 537 data = devm_kzalloc(&client->dev, sizeof(struct mms114_data), 538 GFP_KERNEL); 539 input_dev = devm_input_allocate_device(&client->dev); 540 if (!data || !input_dev) { 541 dev_err(&client->dev, "Failed to allocate memory\n"); 542 return -ENOMEM; 543 } 544 545 data->client = client; 546 data->input_dev = input_dev; 547 548 data->chip = i2c_get_match_data(client); 549 if (!data->chip) 550 return -EINVAL; 551 552 data->num_keycodes = device_property_count_u32(&client->dev, 553 "linux,keycodes"); 554 if (data->num_keycodes == -EINVAL) { 555 data->num_keycodes = 0; 556 } else if (data->num_keycodes < 0) { 557 dev_err(&client->dev, 558 "Unable to parse linux,keycodes property: %d\n", 559 data->num_keycodes); 560 return data->num_keycodes; 561 } else if (data->num_keycodes > MMS114_MAX_TOUCHKEYS) { 562 dev_warn(&client->dev, 563 "Found %d linux,keycodes but max is %d, ignoring the rest\n", 564 data->num_keycodes, MMS114_MAX_TOUCHKEYS); 565 data->num_keycodes = MMS114_MAX_TOUCHKEYS; 566 } 567 568 if (data->num_keycodes > 0) { 569 error = device_property_read_u32_array(&client->dev, 570 "linux,keycodes", 571 data->keycodes, 572 data->num_keycodes); 573 if (error) { 574 dev_err(&client->dev, 575 "Unable to read linux,keycodes values: %d\n", 576 error); 577 return error; 578 } 579 580 input_dev->keycode = data->keycodes; 581 input_dev->keycodemax = data->num_keycodes; 582 input_dev->keycodesize = sizeof(data->keycodes[0]); 583 for (i = 0; i < data->num_keycodes; i++) 584 input_set_capability(input_dev, 585 EV_KEY, data->keycodes[i]); 586 } 587 588 input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X); 589 input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y); 590 input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 591 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 592 0, MMS114_MAX_AREA, 0, 0); 593 594 touchscreen_parse_properties(input_dev, true, &data->props); 595 if (!data->props.max_x || !data->props.max_y) { 596 dev_dbg(&client->dev, 597 "missing X/Y size properties, trying legacy bindings\n"); 598 error = mms114_parse_legacy_bindings(data); 599 if (error) 600 return error; 601 602 input_set_abs_params(input_dev, ABS_MT_POSITION_X, 603 0, data->props.max_x, 0, 0); 604 input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 605 0, data->props.max_y, 0, 0); 606 } 607 608 if (data->chip->has_config_regs) { 609 /* 610 * The firmware handles movement and pressure fuzz, so 611 * don't duplicate that in software. 612 */ 613 data->moving_threshold = input_abs_get_fuzz(input_dev, 614 ABS_MT_POSITION_X); 615 data->contact_threshold = input_abs_get_fuzz(input_dev, 616 ABS_MT_PRESSURE); 617 input_abs_set_fuzz(input_dev, ABS_MT_POSITION_X, 0); 618 input_abs_set_fuzz(input_dev, ABS_MT_POSITION_Y, 0); 619 input_abs_set_fuzz(input_dev, ABS_MT_PRESSURE, 0); 620 } 621 622 input_dev->name = devm_kasprintf(&client->dev, GFP_KERNEL, 623 "MELFAS %s Touchscreen", 624 data->chip->name); 625 if (!input_dev->name) 626 return -ENOMEM; 627 628 input_dev->id.bustype = BUS_I2C; 629 input_dev->dev.parent = &client->dev; 630 input_dev->open = mms114_input_open; 631 input_dev->close = mms114_input_close; 632 633 error = input_mt_init_slots(input_dev, MMS114_MAX_TOUCH, 634 INPUT_MT_DIRECT); 635 if (error) 636 return error; 637 638 input_set_drvdata(input_dev, data); 639 i2c_set_clientdata(client, data); 640 641 data->core_reg = devm_regulator_get(&client->dev, "avdd"); 642 if (IS_ERR(data->core_reg)) { 643 error = PTR_ERR(data->core_reg); 644 dev_err(&client->dev, 645 "Unable to get the Core regulator (%d)\n", error); 646 return error; 647 } 648 649 data->io_reg = devm_regulator_get(&client->dev, "vdd"); 650 if (IS_ERR(data->io_reg)) { 651 error = PTR_ERR(data->io_reg); 652 dev_err(&client->dev, 653 "Unable to get the IO regulator (%d)\n", error); 654 return error; 655 } 656 657 error = devm_request_threaded_irq(&client->dev, client->irq, 658 NULL, mms114_interrupt, 659 IRQF_ONESHOT | IRQF_NO_AUTOEN, 660 dev_name(&client->dev), data); 661 if (error) { 662 dev_err(&client->dev, "Failed to register interrupt\n"); 663 return error; 664 } 665 666 error = input_register_device(data->input_dev); 667 if (error) { 668 dev_err(&client->dev, "Failed to register input device\n"); 669 return error; 670 } 671 672 return 0; 673 } 674 675 static int mms114_suspend(struct device *dev) 676 { 677 struct i2c_client *client = to_i2c_client(dev); 678 struct mms114_data *data = i2c_get_clientdata(client); 679 struct input_dev *input_dev = data->input_dev; 680 int id; 681 682 /* Release all touch */ 683 for (id = 0; id < MMS114_MAX_TOUCH; id++) { 684 input_mt_slot(input_dev, id); 685 input_mt_report_slot_inactive(input_dev); 686 } 687 688 input_mt_report_pointer_emulation(input_dev, true); 689 input_sync(input_dev); 690 691 guard(mutex)(&input_dev->mutex); 692 693 if (input_device_enabled(input_dev)) 694 mms114_stop(data); 695 696 return 0; 697 } 698 699 static int mms114_resume(struct device *dev) 700 { 701 struct i2c_client *client = to_i2c_client(dev); 702 struct mms114_data *data = i2c_get_clientdata(client); 703 struct input_dev *input_dev = data->input_dev; 704 int error; 705 706 guard(mutex)(&input_dev->mutex); 707 708 if (input_device_enabled(input_dev)) { 709 error = mms114_start(data); 710 if (error) 711 return error; 712 } 713 714 return 0; 715 } 716 717 static DEFINE_SIMPLE_DEV_PM_OPS(mms114_pm_ops, mms114_suspend, mms114_resume); 718 719 static const struct i2c_device_id mms114_id[] = { 720 { .name = "mms114", .driver_data = (kernel_ulong_t)&mms114_descriptor }, 721 { .name = "mms134s", .driver_data = (kernel_ulong_t)&mms134s_descriptor }, 722 { .name = "mms136", .driver_data = (kernel_ulong_t)&mms136_descriptor }, 723 { .name = "mms152", .driver_data = (kernel_ulong_t)&mms152_descriptor }, 724 { .name = "mms345l", .driver_data = (kernel_ulong_t)&mms345l_descriptor }, 725 { } 726 }; 727 MODULE_DEVICE_TABLE(i2c, mms114_id); 728 729 #ifdef CONFIG_OF 730 static const struct of_device_id mms114_dt_match[] = { 731 { .compatible = "melfas,mms114", .data = &mms114_descriptor }, 732 { .compatible = "melfas,mms134s", .data = &mms134s_descriptor }, 733 { .compatible = "melfas,mms136", .data = &mms136_descriptor }, 734 { .compatible = "melfas,mms152", .data = &mms152_descriptor }, 735 { .compatible = "melfas,mms345l", .data = &mms345l_descriptor }, 736 { } 737 }; 738 MODULE_DEVICE_TABLE(of, mms114_dt_match); 739 #endif 740 741 static struct i2c_driver mms114_driver = { 742 .driver = { 743 .name = "mms114", 744 .pm = pm_sleep_ptr(&mms114_pm_ops), 745 .of_match_table = of_match_ptr(mms114_dt_match), 746 }, 747 .probe = mms114_probe, 748 .id_table = mms114_id, 749 }; 750 751 module_i2c_driver(mms114_driver); 752 753 /* Module information */ 754 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 755 MODULE_DESCRIPTION("MELFAS mms114 Touchscreen driver"); 756 MODULE_LICENSE("GPL"); 757