1 /* 2 * Copyright (c) 2016 Masaki Ota <masaki.ota@jp.alps.com> 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the Free 6 * Software Foundation; either version 2 of the License, or (at your option) 7 * any later version. 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/hid.h> 12 #include <linux/input.h> 13 #include <linux/input/mt.h> 14 #include <linux/module.h> 15 #include <asm/unaligned.h> 16 #include "hid-ids.h" 17 18 /* ALPS Device Product ID */ 19 #define HID_PRODUCT_ID_T3_BTNLESS 0xD0C0 20 #define HID_PRODUCT_ID_COSMO 0x1202 21 #define HID_PRODUCT_ID_U1_PTP_1 0x1207 22 #define HID_PRODUCT_ID_U1 0x1209 23 #define HID_PRODUCT_ID_U1_PTP_2 0x120A 24 #define HID_PRODUCT_ID_U1_DUAL 0x120B 25 #define HID_PRODUCT_ID_T4_BTNLESS 0x120C 26 27 #define DEV_SINGLEPOINT 0x01 28 #define DEV_DUALPOINT 0x02 29 30 #define U1_MOUSE_REPORT_ID 0x01 /* Mouse data ReportID */ 31 #define U1_ABSOLUTE_REPORT_ID 0x03 /* Absolute data ReportID */ 32 #define U1_FEATURE_REPORT_ID 0x05 /* Feature ReportID */ 33 #define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */ 34 35 #define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */ 36 #define U1_FEATURE_REPORT_LEN_ALL 0x0A 37 #define U1_CMD_REGISTER_READ 0xD1 38 #define U1_CMD_REGISTER_WRITE 0xD2 39 40 #define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */ 41 #define U1_DISABLE_DEV 0x01 42 #define U1_TP_ABS_MODE 0x02 43 #define U1_SP_ABS_MODE 0x80 44 45 #define ADDRESS_U1_DEV_CTRL_1 0x00800040 46 #define ADDRESS_U1_DEVICE_TYP 0x00800043 47 #define ADDRESS_U1_NUM_SENS_X 0x00800047 48 #define ADDRESS_U1_NUM_SENS_Y 0x00800048 49 #define ADDRESS_U1_PITCH_SENS_X 0x00800049 50 #define ADDRESS_U1_PITCH_SENS_Y 0x0080004A 51 #define ADDRESS_U1_RESO_DWN_ABS 0x0080004E 52 #define ADDRESS_U1_PAD_BTN 0x00800052 53 #define ADDRESS_U1_SP_BTN 0x0080009F 54 55 #define T4_INPUT_REPORT_LEN sizeof(struct t4_input_report) 56 #define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN 57 #define T4_FEATURE_REPORT_ID 7 58 #define T4_CMD_REGISTER_READ 0x08 59 #define T4_CMD_REGISTER_WRITE 0x07 60 61 #define T4_ADDRESS_BASE 0xC2C0 62 #define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002) 63 #define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004) 64 #define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A) 65 #define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0) 66 67 68 #define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01 69 #define T4_I2C_ABS 0x78 70 71 #define T4_COUNT_PER_ELECTRODE 256 72 #define MAX_TOUCHES 5 73 74 enum dev_num { 75 U1, 76 T4, 77 UNKNOWN, 78 }; 79 /** 80 * struct u1_data 81 * 82 * @input: pointer to the kernel input device 83 * @input2: pointer to the kernel input2 device 84 * @hdev: pointer to the struct hid_device 85 * 86 * @dev_type: device type 87 * @max_fingers: total number of fingers 88 * @has_sp: boolean of sp existense 89 * @sp_btn_info: button information 90 * @x_active_len_mm: active area length of X (mm) 91 * @y_active_len_mm: active area length of Y (mm) 92 * @x_max: maximum x coordinate value 93 * @y_max: maximum y coordinate value 94 * @x_min: minimum x coordinate value 95 * @y_min: minimum y coordinate value 96 * @btn_cnt: number of buttons 97 * @sp_btn_cnt: number of stick buttons 98 */ 99 struct alps_dev { 100 struct input_dev *input; 101 struct input_dev *input2; 102 struct hid_device *hdev; 103 104 enum dev_num dev_type; 105 u8 max_fingers; 106 u8 has_sp; 107 u8 sp_btn_info; 108 u32 x_active_len_mm; 109 u32 y_active_len_mm; 110 u32 x_max; 111 u32 y_max; 112 u32 x_min; 113 u32 y_min; 114 u32 btn_cnt; 115 u32 sp_btn_cnt; 116 }; 117 118 struct t4_contact_data { 119 u8 palm; 120 u8 x_lo; 121 u8 x_hi; 122 u8 y_lo; 123 u8 y_hi; 124 }; 125 126 struct t4_input_report { 127 u8 reportID; 128 u8 numContacts; 129 struct t4_contact_data contact[5]; 130 u8 button; 131 u8 track[5]; 132 u8 zx[5], zy[5]; 133 u8 palmTime[5]; 134 u8 kilroy; 135 u16 timeStamp; 136 }; 137 138 static u16 t4_calc_check_sum(u8 *buffer, 139 unsigned long offset, unsigned long length) 140 { 141 u16 sum1 = 0xFF, sum2 = 0xFF; 142 unsigned long i = 0; 143 144 if (offset + length >= 50) 145 return 0; 146 147 while (length > 0) { 148 u32 tlen = length > 20 ? 20 : length; 149 150 length -= tlen; 151 152 do { 153 sum1 += buffer[offset + i]; 154 sum2 += sum1; 155 i++; 156 } while (--tlen > 0); 157 158 sum1 = (sum1 & 0xFF) + (sum1 >> 8); 159 sum2 = (sum2 & 0xFF) + (sum2 >> 8); 160 } 161 162 sum1 = (sum1 & 0xFF) + (sum1 >> 8); 163 sum2 = (sum2 & 0xFF) + (sum2 >> 8); 164 165 return(sum2 << 8 | sum1); 166 } 167 168 static int t4_read_write_register(struct hid_device *hdev, u32 address, 169 u8 *read_val, u8 write_val, bool read_flag) 170 { 171 int ret; 172 u16 check_sum; 173 u8 *input; 174 u8 *readbuf = NULL; 175 176 input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); 177 if (!input) 178 return -ENOMEM; 179 180 input[0] = T4_FEATURE_REPORT_ID; 181 if (read_flag) { 182 input[1] = T4_CMD_REGISTER_READ; 183 input[8] = 0x00; 184 } else { 185 input[1] = T4_CMD_REGISTER_WRITE; 186 input[8] = write_val; 187 } 188 put_unaligned_le32(address, input + 2); 189 input[6] = 1; 190 input[7] = 0; 191 192 /* Calculate the checksum */ 193 check_sum = t4_calc_check_sum(input, 1, 8); 194 input[9] = (u8)check_sum; 195 input[10] = (u8)(check_sum >> 8); 196 input[11] = 0; 197 198 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input, 199 T4_FEATURE_REPORT_LEN, 200 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 201 202 if (ret < 0) { 203 dev_err(&hdev->dev, "failed to read command (%d)\n", ret); 204 goto exit; 205 } 206 207 if (read_flag) { 208 readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); 209 if (!readbuf) { 210 ret = -ENOMEM; 211 goto exit; 212 } 213 214 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf, 215 T4_FEATURE_REPORT_LEN, 216 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 217 if (ret < 0) { 218 dev_err(&hdev->dev, "failed read register (%d)\n", ret); 219 goto exit_readbuf; 220 } 221 222 ret = -EINVAL; 223 224 if (*(u32 *)&readbuf[6] != address) { 225 dev_err(&hdev->dev, "read register address error (%x,%x)\n", 226 *(u32 *)&readbuf[6], address); 227 goto exit_readbuf; 228 } 229 230 if (*(u16 *)&readbuf[10] != 1) { 231 dev_err(&hdev->dev, "read register size error (%x)\n", 232 *(u16 *)&readbuf[10]); 233 goto exit_readbuf; 234 } 235 236 check_sum = t4_calc_check_sum(readbuf, 6, 7); 237 if (*(u16 *)&readbuf[13] != check_sum) { 238 dev_err(&hdev->dev, "read register checksum error (%x,%x)\n", 239 *(u16 *)&readbuf[13], check_sum); 240 goto exit_readbuf; 241 } 242 243 *read_val = readbuf[12]; 244 } 245 246 ret = 0; 247 248 exit_readbuf: 249 kfree(readbuf); 250 exit: 251 kfree(input); 252 return ret; 253 } 254 255 static int u1_read_write_register(struct hid_device *hdev, u32 address, 256 u8 *read_val, u8 write_val, bool read_flag) 257 { 258 int ret, i; 259 u8 check_sum; 260 u8 *input; 261 u8 *readbuf; 262 263 input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); 264 if (!input) 265 return -ENOMEM; 266 267 input[0] = U1_FEATURE_REPORT_ID; 268 if (read_flag) { 269 input[1] = U1_CMD_REGISTER_READ; 270 input[6] = 0x00; 271 } else { 272 input[1] = U1_CMD_REGISTER_WRITE; 273 input[6] = write_val; 274 } 275 276 put_unaligned_le32(address, input + 2); 277 278 /* Calculate the checksum */ 279 check_sum = U1_FEATURE_REPORT_LEN_ALL; 280 for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++) 281 check_sum += input[i]; 282 283 input[7] = check_sum; 284 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input, 285 U1_FEATURE_REPORT_LEN, 286 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 287 288 if (ret < 0) { 289 dev_err(&hdev->dev, "failed to read command (%d)\n", ret); 290 goto exit; 291 } 292 293 if (read_flag) { 294 readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); 295 if (!readbuf) { 296 ret = -ENOMEM; 297 goto exit; 298 } 299 300 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf, 301 U1_FEATURE_REPORT_LEN, 302 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 303 304 if (ret < 0) { 305 dev_err(&hdev->dev, "failed read register (%d)\n", ret); 306 kfree(readbuf); 307 goto exit; 308 } 309 310 *read_val = readbuf[6]; 311 312 kfree(readbuf); 313 } 314 315 ret = 0; 316 317 exit: 318 kfree(input); 319 return ret; 320 } 321 322 static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size) 323 { 324 unsigned int x, y, z; 325 int i; 326 struct t4_input_report *p_report = (struct t4_input_report *)data; 327 328 if (!data) 329 return 0; 330 for (i = 0; i < hdata->max_fingers; i++) { 331 x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo; 332 y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo; 333 y = hdata->y_max - y + hdata->y_min; 334 z = (p_report->contact[i].palm < 0x80 && 335 p_report->contact[i].palm > 0) * 62; 336 if (x == 0xffff) { 337 x = 0; 338 y = 0; 339 z = 0; 340 } 341 input_mt_slot(hdata->input, i); 342 343 input_mt_report_slot_state(hdata->input, 344 MT_TOOL_FINGER, z != 0); 345 346 if (!z) 347 continue; 348 349 input_report_abs(hdata->input, ABS_MT_POSITION_X, x); 350 input_report_abs(hdata->input, ABS_MT_POSITION_Y, y); 351 input_report_abs(hdata->input, ABS_MT_PRESSURE, z); 352 } 353 input_mt_sync_frame(hdata->input); 354 355 input_report_key(hdata->input, BTN_LEFT, p_report->button); 356 357 input_sync(hdata->input); 358 return 1; 359 } 360 361 static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size) 362 { 363 unsigned int x, y, z; 364 int i; 365 short sp_x, sp_y; 366 367 if (!data) 368 return 0; 369 switch (data[0]) { 370 case U1_MOUSE_REPORT_ID: 371 break; 372 case U1_FEATURE_REPORT_ID: 373 break; 374 case U1_ABSOLUTE_REPORT_ID: 375 for (i = 0; i < hdata->max_fingers; i++) { 376 u8 *contact = &data[i * 5]; 377 378 x = get_unaligned_le16(contact + 3); 379 y = get_unaligned_le16(contact + 5); 380 z = contact[7] & 0x7F; 381 382 input_mt_slot(hdata->input, i); 383 384 if (z != 0) { 385 input_mt_report_slot_state(hdata->input, 386 MT_TOOL_FINGER, 1); 387 input_report_abs(hdata->input, 388 ABS_MT_POSITION_X, x); 389 input_report_abs(hdata->input, 390 ABS_MT_POSITION_Y, y); 391 input_report_abs(hdata->input, 392 ABS_MT_PRESSURE, z); 393 } else { 394 input_mt_report_slot_state(hdata->input, 395 MT_TOOL_FINGER, 0); 396 } 397 } 398 399 input_mt_sync_frame(hdata->input); 400 401 input_report_key(hdata->input, BTN_LEFT, 402 data[1] & 0x1); 403 input_report_key(hdata->input, BTN_RIGHT, 404 (data[1] & 0x2)); 405 input_report_key(hdata->input, BTN_MIDDLE, 406 (data[1] & 0x4)); 407 408 input_sync(hdata->input); 409 410 return 1; 411 412 case U1_SP_ABSOLUTE_REPORT_ID: 413 sp_x = get_unaligned_le16(data+2); 414 sp_y = get_unaligned_le16(data+4); 415 416 sp_x = sp_x / 8; 417 sp_y = sp_y / 8; 418 419 input_report_rel(hdata->input2, REL_X, sp_x); 420 input_report_rel(hdata->input2, REL_Y, sp_y); 421 422 input_report_key(hdata->input2, BTN_LEFT, 423 data[1] & 0x1); 424 input_report_key(hdata->input2, BTN_RIGHT, 425 (data[1] & 0x2)); 426 input_report_key(hdata->input2, BTN_MIDDLE, 427 (data[1] & 0x4)); 428 429 input_sync(hdata->input2); 430 431 return 1; 432 } 433 434 return 0; 435 } 436 437 static int alps_raw_event(struct hid_device *hdev, 438 struct hid_report *report, u8 *data, int size) 439 { 440 int ret = 0; 441 struct alps_dev *hdata = hid_get_drvdata(hdev); 442 443 switch (hdev->product) { 444 case HID_PRODUCT_ID_T4_BTNLESS: 445 ret = t4_raw_event(hdata, data, size); 446 break; 447 default: 448 ret = u1_raw_event(hdata, data, size); 449 break; 450 } 451 return ret; 452 } 453 454 static int __maybe_unused alps_post_reset(struct hid_device *hdev) 455 { 456 int ret = -1; 457 struct alps_dev *data = hid_get_drvdata(hdev); 458 459 switch (data->dev_type) { 460 case T4: 461 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, 462 NULL, T4_I2C_ABS, false); 463 if (ret < 0) { 464 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", 465 ret); 466 goto exit; 467 } 468 469 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, 470 NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); 471 if (ret < 0) { 472 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", 473 ret); 474 goto exit; 475 } 476 break; 477 case U1: 478 ret = u1_read_write_register(hdev, 479 ADDRESS_U1_DEV_CTRL_1, NULL, 480 U1_TP_ABS_MODE | U1_SP_ABS_MODE, false); 481 if (ret < 0) { 482 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", 483 ret); 484 goto exit; 485 } 486 break; 487 default: 488 break; 489 } 490 491 exit: 492 return ret; 493 } 494 495 static int __maybe_unused alps_post_resume(struct hid_device *hdev) 496 { 497 return alps_post_reset(hdev); 498 } 499 500 static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data) 501 { 502 int ret; 503 u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y; 504 u8 pitch_x, pitch_y, resolution; 505 506 /* Device initialization */ 507 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 508 &dev_ctrl, 0, true); 509 if (ret < 0) { 510 dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret); 511 goto exit; 512 } 513 514 dev_ctrl &= ~U1_DISABLE_DEV; 515 dev_ctrl |= U1_TP_ABS_MODE; 516 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 517 NULL, dev_ctrl, false); 518 if (ret < 0) { 519 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); 520 goto exit; 521 } 522 523 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X, 524 &sen_line_num_x, 0, true); 525 if (ret < 0) { 526 dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret); 527 goto exit; 528 } 529 530 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y, 531 &sen_line_num_y, 0, true); 532 if (ret < 0) { 533 dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret); 534 goto exit; 535 } 536 537 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X, 538 &pitch_x, 0, true); 539 if (ret < 0) { 540 dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret); 541 goto exit; 542 } 543 544 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y, 545 &pitch_y, 0, true); 546 if (ret < 0) { 547 dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret); 548 goto exit; 549 } 550 551 ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS, 552 &resolution, 0, true); 553 if (ret < 0) { 554 dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret); 555 goto exit; 556 } 557 pri_data->x_active_len_mm = 558 (pitch_x * (sen_line_num_x - 1)) / 10; 559 pri_data->y_active_len_mm = 560 (pitch_y * (sen_line_num_y - 1)) / 10; 561 562 pri_data->x_max = 563 (resolution << 2) * (sen_line_num_x - 1); 564 pri_data->x_min = 1; 565 pri_data->y_max = 566 (resolution << 2) * (sen_line_num_y - 1); 567 pri_data->y_min = 1; 568 569 ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN, 570 &tmp, 0, true); 571 if (ret < 0) { 572 dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret); 573 goto exit; 574 } 575 if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) { 576 pri_data->btn_cnt = (tmp & 0x0F); 577 } else { 578 /* Button pad */ 579 pri_data->btn_cnt = 1; 580 } 581 582 pri_data->has_sp = 0; 583 /* Check StickPointer device */ 584 ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP, 585 &tmp, 0, true); 586 if (ret < 0) { 587 dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret); 588 goto exit; 589 } 590 if (tmp & U1_DEVTYPE_SP_SUPPORT) { 591 dev_ctrl |= U1_SP_ABS_MODE; 592 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 593 NULL, dev_ctrl, false); 594 if (ret < 0) { 595 dev_err(&hdev->dev, "failed SP mode (%d)\n", ret); 596 goto exit; 597 } 598 599 ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN, 600 &pri_data->sp_btn_info, 0, true); 601 if (ret < 0) { 602 dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret); 603 goto exit; 604 } 605 pri_data->has_sp = 1; 606 } 607 pri_data->max_fingers = 5; 608 exit: 609 return ret; 610 } 611 612 static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data) 613 { 614 int ret; 615 u8 tmp, sen_line_num_x, sen_line_num_y; 616 617 ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true); 618 if (ret < 0) { 619 dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret); 620 goto exit; 621 } 622 sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0)); 623 sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0)); 624 625 pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE; 626 pri_data->x_min = T4_COUNT_PER_ELECTRODE; 627 pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE; 628 pri_data->y_min = T4_COUNT_PER_ELECTRODE; 629 pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0; 630 pri_data->btn_cnt = 1; 631 632 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true); 633 if (ret < 0) { 634 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); 635 goto exit; 636 } 637 tmp |= 0x02; 638 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false); 639 if (ret < 0) { 640 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); 641 goto exit; 642 } 643 644 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, 645 NULL, T4_I2C_ABS, false); 646 if (ret < 0) { 647 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret); 648 goto exit; 649 } 650 651 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL, 652 T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); 653 if (ret < 0) { 654 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret); 655 goto exit; 656 } 657 pri_data->max_fingers = 5; 658 pri_data->has_sp = 0; 659 exit: 660 return ret; 661 } 662 663 static int alps_sp_open(struct input_dev *dev) 664 { 665 struct hid_device *hid = input_get_drvdata(dev); 666 667 return hid_hw_open(hid); 668 } 669 670 static void alps_sp_close(struct input_dev *dev) 671 { 672 struct hid_device *hid = input_get_drvdata(dev); 673 674 hid_hw_close(hid); 675 } 676 677 static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi) 678 { 679 struct alps_dev *data = hid_get_drvdata(hdev); 680 struct input_dev *input = hi->input, *input2; 681 int ret; 682 int res_x, res_y, i; 683 684 data->input = input; 685 686 hid_dbg(hdev, "Opening low level driver\n"); 687 ret = hid_hw_open(hdev); 688 if (ret) 689 return ret; 690 691 /* Allow incoming hid reports */ 692 hid_device_io_start(hdev); 693 switch (data->dev_type) { 694 case T4: 695 ret = T4_init(hdev, data); 696 break; 697 case U1: 698 ret = u1_init(hdev, data); 699 break; 700 default: 701 break; 702 } 703 704 if (ret) 705 goto exit; 706 707 __set_bit(EV_ABS, input->evbit); 708 input_set_abs_params(input, ABS_MT_POSITION_X, 709 data->x_min, data->x_max, 0, 0); 710 input_set_abs_params(input, ABS_MT_POSITION_Y, 711 data->y_min, data->y_max, 0, 0); 712 713 if (data->x_active_len_mm && data->y_active_len_mm) { 714 res_x = (data->x_max - 1) / data->x_active_len_mm; 715 res_y = (data->y_max - 1) / data->y_active_len_mm; 716 717 input_abs_set_res(input, ABS_MT_POSITION_X, res_x); 718 input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); 719 } 720 721 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0); 722 723 input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); 724 725 __set_bit(EV_KEY, input->evbit); 726 727 if (data->btn_cnt == 1) 728 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 729 730 for (i = 0; i < data->btn_cnt; i++) 731 __set_bit(BTN_LEFT + i, input->keybit); 732 733 /* Stick device initialization */ 734 if (data->has_sp) { 735 input2 = input_allocate_device(); 736 if (!input2) { 737 input_free_device(input2); 738 goto exit; 739 } 740 741 data->input2 = input2; 742 input2->phys = input->phys; 743 input2->name = "DualPoint Stick"; 744 input2->id.bustype = BUS_I2C; 745 input2->id.vendor = input->id.vendor; 746 input2->id.product = input->id.product; 747 input2->id.version = input->id.version; 748 input2->dev.parent = input->dev.parent; 749 750 input_set_drvdata(input2, hdev); 751 input2->open = alps_sp_open; 752 input2->close = alps_sp_close; 753 754 __set_bit(EV_KEY, input2->evbit); 755 data->sp_btn_cnt = (data->sp_btn_info & 0x0F); 756 for (i = 0; i < data->sp_btn_cnt; i++) 757 __set_bit(BTN_LEFT + i, input2->keybit); 758 759 __set_bit(EV_REL, input2->evbit); 760 __set_bit(REL_X, input2->relbit); 761 __set_bit(REL_Y, input2->relbit); 762 __set_bit(INPUT_PROP_POINTER, input2->propbit); 763 __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit); 764 765 if (input_register_device(data->input2)) { 766 input_free_device(input2); 767 goto exit; 768 } 769 } 770 771 exit: 772 hid_device_io_stop(hdev); 773 hid_hw_close(hdev); 774 return ret; 775 } 776 777 static int alps_input_mapping(struct hid_device *hdev, 778 struct hid_input *hi, struct hid_field *field, 779 struct hid_usage *usage, unsigned long **bit, int *max) 780 { 781 return -1; 782 } 783 784 static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id) 785 { 786 struct alps_dev *data = NULL; 787 int ret; 788 data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL); 789 if (!data) 790 return -ENOMEM; 791 792 data->hdev = hdev; 793 hid_set_drvdata(hdev, data); 794 795 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 796 797 ret = hid_parse(hdev); 798 if (ret) { 799 hid_err(hdev, "parse failed\n"); 800 return ret; 801 } 802 803 switch (hdev->product) { 804 case HID_DEVICE_ID_ALPS_T4_BTNLESS: 805 data->dev_type = T4; 806 break; 807 case HID_DEVICE_ID_ALPS_U1_DUAL: 808 case HID_DEVICE_ID_ALPS_U1: 809 data->dev_type = U1; 810 break; 811 default: 812 data->dev_type = UNKNOWN; 813 } 814 815 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 816 if (ret) { 817 hid_err(hdev, "hw start failed\n"); 818 return ret; 819 } 820 821 return 0; 822 } 823 824 static void alps_remove(struct hid_device *hdev) 825 { 826 hid_hw_stop(hdev); 827 } 828 829 static const struct hid_device_id alps_id[] = { 830 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 831 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) }, 832 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 833 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) }, 834 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 835 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) }, 836 { } 837 }; 838 MODULE_DEVICE_TABLE(hid, alps_id); 839 840 static struct hid_driver alps_driver = { 841 .name = "hid-alps", 842 .id_table = alps_id, 843 .probe = alps_probe, 844 .remove = alps_remove, 845 .raw_event = alps_raw_event, 846 .input_mapping = alps_input_mapping, 847 .input_configured = alps_input_configured, 848 #ifdef CONFIG_PM 849 .resume = alps_post_resume, 850 .reset_resume = alps_post_reset, 851 #endif 852 }; 853 854 module_hid_driver(alps_driver); 855 856 MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>"); 857 MODULE_DESCRIPTION("ALPS HID driver"); 858 MODULE_LICENSE("GPL"); 859