1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2016 Masaki Ota <masaki.ota@jp.alps.com> 4 */ 5 6 #include <linux/kernel.h> 7 #include <linux/hid.h> 8 #include <linux/input.h> 9 #include <linux/input/mt.h> 10 #include <linux/module.h> 11 #include <asm/unaligned.h> 12 #include "hid-ids.h" 13 14 /* ALPS Device Product ID */ 15 #define HID_PRODUCT_ID_T3_BTNLESS 0xD0C0 16 #define HID_PRODUCT_ID_COSMO 0x1202 17 #define HID_PRODUCT_ID_U1_PTP_1 0x1207 18 #define HID_PRODUCT_ID_U1 0x1209 19 #define HID_PRODUCT_ID_U1_PTP_2 0x120A 20 #define HID_PRODUCT_ID_U1_DUAL 0x120B 21 #define HID_PRODUCT_ID_T4_BTNLESS 0x120C 22 23 #define DEV_SINGLEPOINT 0x01 24 #define DEV_DUALPOINT 0x02 25 26 #define U1_MOUSE_REPORT_ID 0x01 /* Mouse data ReportID */ 27 #define U1_ABSOLUTE_REPORT_ID 0x03 /* Absolute data ReportID */ 28 #define U1_ABSOLUTE_REPORT_ID_SECD 0x02 /* FW-PTP Absolute data ReportID */ 29 #define U1_FEATURE_REPORT_ID 0x05 /* Feature ReportID */ 30 #define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */ 31 32 #define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */ 33 #define U1_FEATURE_REPORT_LEN_ALL 0x0A 34 #define U1_CMD_REGISTER_READ 0xD1 35 #define U1_CMD_REGISTER_WRITE 0xD2 36 37 #define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */ 38 #define U1_DISABLE_DEV 0x01 39 #define U1_TP_ABS_MODE 0x02 40 #define U1_SP_ABS_MODE 0x80 41 42 #define ADDRESS_U1_DEV_CTRL_1 0x00800040 43 #define ADDRESS_U1_DEVICE_TYP 0x00800043 44 #define ADDRESS_U1_NUM_SENS_X 0x00800047 45 #define ADDRESS_U1_NUM_SENS_Y 0x00800048 46 #define ADDRESS_U1_PITCH_SENS_X 0x00800049 47 #define ADDRESS_U1_PITCH_SENS_Y 0x0080004A 48 #define ADDRESS_U1_RESO_DWN_ABS 0x0080004E 49 #define ADDRESS_U1_PAD_BTN 0x00800052 50 #define ADDRESS_U1_SP_BTN 0x0080009F 51 52 #define T4_INPUT_REPORT_LEN sizeof(struct t4_input_report) 53 #define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN 54 #define T4_FEATURE_REPORT_ID 7 55 #define T4_CMD_REGISTER_READ 0x08 56 #define T4_CMD_REGISTER_WRITE 0x07 57 58 #define T4_ADDRESS_BASE 0xC2C0 59 #define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002) 60 #define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004) 61 #define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A) 62 #define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0) 63 64 65 #define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01 66 #define T4_I2C_ABS 0x78 67 68 #define T4_COUNT_PER_ELECTRODE 256 69 #define MAX_TOUCHES 5 70 71 enum dev_num { 72 U1, 73 T4, 74 UNKNOWN, 75 }; 76 /** 77 * struct alps_dev 78 * 79 * @input: pointer to the kernel input device 80 * @input2: pointer to the kernel input2 device 81 * @hdev: pointer to the struct hid_device 82 * 83 * @dev_type: device type 84 * @max_fingers: total number of fingers 85 * @has_sp: boolean of sp existense 86 * @sp_btn_info: button information 87 * @x_active_len_mm: active area length of X (mm) 88 * @y_active_len_mm: active area length of Y (mm) 89 * @x_max: maximum x coordinate value 90 * @y_max: maximum y coordinate value 91 * @x_min: minimum x coordinate value 92 * @y_min: minimum y coordinate value 93 * @btn_cnt: number of buttons 94 * @sp_btn_cnt: number of stick buttons 95 */ 96 struct alps_dev { 97 struct input_dev *input; 98 struct input_dev *input2; 99 struct hid_device *hdev; 100 101 enum dev_num dev_type; 102 u8 max_fingers; 103 u8 has_sp; 104 u8 sp_btn_info; 105 u32 x_active_len_mm; 106 u32 y_active_len_mm; 107 u32 x_max; 108 u32 y_max; 109 u32 x_min; 110 u32 y_min; 111 u32 btn_cnt; 112 u32 sp_btn_cnt; 113 }; 114 115 struct t4_contact_data { 116 u8 palm; 117 u8 x_lo; 118 u8 x_hi; 119 u8 y_lo; 120 u8 y_hi; 121 }; 122 123 struct t4_input_report { 124 u8 reportID; 125 u8 numContacts; 126 struct t4_contact_data contact[5]; 127 u8 button; 128 u8 track[5]; 129 u8 zx[5], zy[5]; 130 u8 palmTime[5]; 131 u8 kilroy; 132 u16 timeStamp; 133 }; 134 135 static u16 t4_calc_check_sum(u8 *buffer, 136 unsigned long offset, unsigned long length) 137 { 138 u16 sum1 = 0xFF, sum2 = 0xFF; 139 unsigned long i = 0; 140 141 if (offset + length >= 50) 142 return 0; 143 144 while (length > 0) { 145 u32 tlen = length > 20 ? 20 : length; 146 147 length -= tlen; 148 149 do { 150 sum1 += buffer[offset + i]; 151 sum2 += sum1; 152 i++; 153 } while (--tlen > 0); 154 155 sum1 = (sum1 & 0xFF) + (sum1 >> 8); 156 sum2 = (sum2 & 0xFF) + (sum2 >> 8); 157 } 158 159 sum1 = (sum1 & 0xFF) + (sum1 >> 8); 160 sum2 = (sum2 & 0xFF) + (sum2 >> 8); 161 162 return(sum2 << 8 | sum1); 163 } 164 165 static int t4_read_write_register(struct hid_device *hdev, u32 address, 166 u8 *read_val, u8 write_val, bool read_flag) 167 { 168 int ret; 169 u16 check_sum; 170 u8 *input; 171 u8 *readbuf = NULL; 172 173 input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); 174 if (!input) 175 return -ENOMEM; 176 177 input[0] = T4_FEATURE_REPORT_ID; 178 if (read_flag) { 179 input[1] = T4_CMD_REGISTER_READ; 180 input[8] = 0x00; 181 } else { 182 input[1] = T4_CMD_REGISTER_WRITE; 183 input[8] = write_val; 184 } 185 put_unaligned_le32(address, input + 2); 186 input[6] = 1; 187 input[7] = 0; 188 189 /* Calculate the checksum */ 190 check_sum = t4_calc_check_sum(input, 1, 8); 191 input[9] = (u8)check_sum; 192 input[10] = (u8)(check_sum >> 8); 193 input[11] = 0; 194 195 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input, 196 T4_FEATURE_REPORT_LEN, 197 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 198 199 if (ret < 0) { 200 dev_err(&hdev->dev, "failed to read command (%d)\n", ret); 201 goto exit; 202 } 203 204 if (read_flag) { 205 readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL); 206 if (!readbuf) { 207 ret = -ENOMEM; 208 goto exit; 209 } 210 211 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf, 212 T4_FEATURE_REPORT_LEN, 213 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 214 if (ret < 0) { 215 dev_err(&hdev->dev, "failed read register (%d)\n", ret); 216 goto exit_readbuf; 217 } 218 219 ret = -EINVAL; 220 221 if (*(u32 *)&readbuf[6] != address) { 222 dev_err(&hdev->dev, "read register address error (%x,%x)\n", 223 *(u32 *)&readbuf[6], address); 224 goto exit_readbuf; 225 } 226 227 if (*(u16 *)&readbuf[10] != 1) { 228 dev_err(&hdev->dev, "read register size error (%x)\n", 229 *(u16 *)&readbuf[10]); 230 goto exit_readbuf; 231 } 232 233 check_sum = t4_calc_check_sum(readbuf, 6, 7); 234 if (*(u16 *)&readbuf[13] != check_sum) { 235 dev_err(&hdev->dev, "read register checksum error (%x,%x)\n", 236 *(u16 *)&readbuf[13], check_sum); 237 goto exit_readbuf; 238 } 239 240 *read_val = readbuf[12]; 241 } 242 243 ret = 0; 244 245 exit_readbuf: 246 kfree(readbuf); 247 exit: 248 kfree(input); 249 return ret; 250 } 251 252 static int u1_read_write_register(struct hid_device *hdev, u32 address, 253 u8 *read_val, u8 write_val, bool read_flag) 254 { 255 int ret, i; 256 u8 check_sum; 257 u8 *input; 258 u8 *readbuf; 259 260 input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); 261 if (!input) 262 return -ENOMEM; 263 264 input[0] = U1_FEATURE_REPORT_ID; 265 if (read_flag) { 266 input[1] = U1_CMD_REGISTER_READ; 267 input[6] = 0x00; 268 } else { 269 input[1] = U1_CMD_REGISTER_WRITE; 270 input[6] = write_val; 271 } 272 273 put_unaligned_le32(address, input + 2); 274 275 /* Calculate the checksum */ 276 check_sum = U1_FEATURE_REPORT_LEN_ALL; 277 for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++) 278 check_sum += input[i]; 279 280 input[7] = check_sum; 281 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input, 282 U1_FEATURE_REPORT_LEN, 283 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 284 285 if (ret < 0) { 286 dev_err(&hdev->dev, "failed to read command (%d)\n", ret); 287 goto exit; 288 } 289 290 if (read_flag) { 291 readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); 292 if (!readbuf) { 293 ret = -ENOMEM; 294 goto exit; 295 } 296 297 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf, 298 U1_FEATURE_REPORT_LEN, 299 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 300 301 if (ret < 0) { 302 dev_err(&hdev->dev, "failed read register (%d)\n", ret); 303 kfree(readbuf); 304 goto exit; 305 } 306 307 *read_val = readbuf[6]; 308 309 kfree(readbuf); 310 } 311 312 ret = 0; 313 314 exit: 315 kfree(input); 316 return ret; 317 } 318 319 static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size) 320 { 321 unsigned int x, y, z; 322 int i; 323 struct t4_input_report *p_report = (struct t4_input_report *)data; 324 325 if (!data) 326 return 0; 327 for (i = 0; i < hdata->max_fingers; i++) { 328 x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo; 329 y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo; 330 y = hdata->y_max - y + hdata->y_min; 331 z = (p_report->contact[i].palm < 0x80 && 332 p_report->contact[i].palm > 0) * 62; 333 if (x == 0xffff) { 334 x = 0; 335 y = 0; 336 z = 0; 337 } 338 input_mt_slot(hdata->input, i); 339 340 input_mt_report_slot_state(hdata->input, 341 MT_TOOL_FINGER, z != 0); 342 343 if (!z) 344 continue; 345 346 input_report_abs(hdata->input, ABS_MT_POSITION_X, x); 347 input_report_abs(hdata->input, ABS_MT_POSITION_Y, y); 348 input_report_abs(hdata->input, ABS_MT_PRESSURE, z); 349 } 350 input_mt_sync_frame(hdata->input); 351 352 input_report_key(hdata->input, BTN_LEFT, p_report->button); 353 354 input_sync(hdata->input); 355 return 1; 356 } 357 358 static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size) 359 { 360 unsigned int x, y, z; 361 int i; 362 short sp_x, sp_y; 363 364 if (!data) 365 return 0; 366 switch (data[0]) { 367 case U1_MOUSE_REPORT_ID: 368 break; 369 case U1_FEATURE_REPORT_ID: 370 break; 371 case U1_ABSOLUTE_REPORT_ID: 372 case U1_ABSOLUTE_REPORT_ID_SECD: 373 for (i = 0; i < hdata->max_fingers; i++) { 374 u8 *contact = &data[i * 5]; 375 376 x = get_unaligned_le16(contact + 3); 377 y = get_unaligned_le16(contact + 5); 378 z = contact[7] & 0x7F; 379 380 input_mt_slot(hdata->input, i); 381 382 if (z != 0) { 383 input_mt_report_slot_state(hdata->input, 384 MT_TOOL_FINGER, 1); 385 input_report_abs(hdata->input, 386 ABS_MT_POSITION_X, x); 387 input_report_abs(hdata->input, 388 ABS_MT_POSITION_Y, y); 389 input_report_abs(hdata->input, 390 ABS_MT_PRESSURE, z); 391 } else { 392 input_mt_report_slot_inactive(hdata->input); 393 } 394 } 395 396 input_mt_sync_frame(hdata->input); 397 398 input_report_key(hdata->input, BTN_LEFT, 399 data[1] & 0x1); 400 input_report_key(hdata->input, BTN_RIGHT, 401 (data[1] & 0x2)); 402 input_report_key(hdata->input, BTN_MIDDLE, 403 (data[1] & 0x4)); 404 405 input_sync(hdata->input); 406 407 return 1; 408 409 case U1_SP_ABSOLUTE_REPORT_ID: 410 sp_x = get_unaligned_le16(data+2); 411 sp_y = get_unaligned_le16(data+4); 412 413 sp_x = sp_x / 8; 414 sp_y = sp_y / 8; 415 416 input_report_rel(hdata->input2, REL_X, sp_x); 417 input_report_rel(hdata->input2, REL_Y, sp_y); 418 419 input_report_key(hdata->input2, BTN_LEFT, 420 data[1] & 0x1); 421 input_report_key(hdata->input2, BTN_RIGHT, 422 (data[1] & 0x2)); 423 input_report_key(hdata->input2, BTN_MIDDLE, 424 (data[1] & 0x4)); 425 426 input_sync(hdata->input2); 427 428 return 1; 429 } 430 431 return 0; 432 } 433 434 static int alps_raw_event(struct hid_device *hdev, 435 struct hid_report *report, u8 *data, int size) 436 { 437 int ret = 0; 438 struct alps_dev *hdata = hid_get_drvdata(hdev); 439 440 switch (hdev->product) { 441 case HID_PRODUCT_ID_T4_BTNLESS: 442 ret = t4_raw_event(hdata, data, size); 443 break; 444 default: 445 ret = u1_raw_event(hdata, data, size); 446 break; 447 } 448 return ret; 449 } 450 451 static int __maybe_unused alps_post_reset(struct hid_device *hdev) 452 { 453 int ret = -1; 454 struct alps_dev *data = hid_get_drvdata(hdev); 455 456 switch (data->dev_type) { 457 case T4: 458 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, 459 NULL, T4_I2C_ABS, false); 460 if (ret < 0) { 461 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", 462 ret); 463 goto exit; 464 } 465 466 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, 467 NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); 468 if (ret < 0) { 469 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", 470 ret); 471 goto exit; 472 } 473 break; 474 case U1: 475 ret = u1_read_write_register(hdev, 476 ADDRESS_U1_DEV_CTRL_1, NULL, 477 U1_TP_ABS_MODE | U1_SP_ABS_MODE, false); 478 if (ret < 0) { 479 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", 480 ret); 481 goto exit; 482 } 483 break; 484 default: 485 break; 486 } 487 488 exit: 489 return ret; 490 } 491 492 static int __maybe_unused alps_post_resume(struct hid_device *hdev) 493 { 494 return alps_post_reset(hdev); 495 } 496 497 static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data) 498 { 499 int ret; 500 u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y; 501 u8 pitch_x, pitch_y, resolution; 502 503 /* Device initialization */ 504 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 505 &dev_ctrl, 0, true); 506 if (ret < 0) { 507 dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret); 508 goto exit; 509 } 510 511 dev_ctrl &= ~U1_DISABLE_DEV; 512 dev_ctrl |= U1_TP_ABS_MODE; 513 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 514 NULL, dev_ctrl, false); 515 if (ret < 0) { 516 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); 517 goto exit; 518 } 519 520 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X, 521 &sen_line_num_x, 0, true); 522 if (ret < 0) { 523 dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret); 524 goto exit; 525 } 526 527 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y, 528 &sen_line_num_y, 0, true); 529 if (ret < 0) { 530 dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret); 531 goto exit; 532 } 533 534 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X, 535 &pitch_x, 0, true); 536 if (ret < 0) { 537 dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret); 538 goto exit; 539 } 540 541 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y, 542 &pitch_y, 0, true); 543 if (ret < 0) { 544 dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret); 545 goto exit; 546 } 547 548 ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS, 549 &resolution, 0, true); 550 if (ret < 0) { 551 dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret); 552 goto exit; 553 } 554 pri_data->x_active_len_mm = 555 (pitch_x * (sen_line_num_x - 1)) / 10; 556 pri_data->y_active_len_mm = 557 (pitch_y * (sen_line_num_y - 1)) / 10; 558 559 pri_data->x_max = 560 (resolution << 2) * (sen_line_num_x - 1); 561 pri_data->x_min = 1; 562 pri_data->y_max = 563 (resolution << 2) * (sen_line_num_y - 1); 564 pri_data->y_min = 1; 565 566 ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN, 567 &tmp, 0, true); 568 if (ret < 0) { 569 dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret); 570 goto exit; 571 } 572 if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) { 573 pri_data->btn_cnt = (tmp & 0x0F); 574 } else { 575 /* Button pad */ 576 pri_data->btn_cnt = 1; 577 } 578 579 pri_data->has_sp = 0; 580 /* Check StickPointer device */ 581 ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP, 582 &tmp, 0, true); 583 if (ret < 0) { 584 dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret); 585 goto exit; 586 } 587 if (tmp & U1_DEVTYPE_SP_SUPPORT) { 588 dev_ctrl |= U1_SP_ABS_MODE; 589 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, 590 NULL, dev_ctrl, false); 591 if (ret < 0) { 592 dev_err(&hdev->dev, "failed SP mode (%d)\n", ret); 593 goto exit; 594 } 595 596 ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN, 597 &pri_data->sp_btn_info, 0, true); 598 if (ret < 0) { 599 dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret); 600 goto exit; 601 } 602 pri_data->has_sp = 1; 603 } 604 pri_data->max_fingers = 5; 605 exit: 606 return ret; 607 } 608 609 static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data) 610 { 611 int ret; 612 u8 tmp, sen_line_num_x, sen_line_num_y; 613 614 ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true); 615 if (ret < 0) { 616 dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret); 617 goto exit; 618 } 619 sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0)); 620 sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0)); 621 622 pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE; 623 pri_data->x_min = T4_COUNT_PER_ELECTRODE; 624 pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE; 625 pri_data->y_min = T4_COUNT_PER_ELECTRODE; 626 pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0; 627 pri_data->btn_cnt = 1; 628 629 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true); 630 if (ret < 0) { 631 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); 632 goto exit; 633 } 634 tmp |= 0x02; 635 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false); 636 if (ret < 0) { 637 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret); 638 goto exit; 639 } 640 641 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1, 642 NULL, T4_I2C_ABS, false); 643 if (ret < 0) { 644 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret); 645 goto exit; 646 } 647 648 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL, 649 T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false); 650 if (ret < 0) { 651 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret); 652 goto exit; 653 } 654 pri_data->max_fingers = 5; 655 pri_data->has_sp = 0; 656 exit: 657 return ret; 658 } 659 660 static int alps_sp_open(struct input_dev *dev) 661 { 662 struct hid_device *hid = input_get_drvdata(dev); 663 664 return hid_hw_open(hid); 665 } 666 667 static void alps_sp_close(struct input_dev *dev) 668 { 669 struct hid_device *hid = input_get_drvdata(dev); 670 671 hid_hw_close(hid); 672 } 673 674 static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi) 675 { 676 struct alps_dev *data = hid_get_drvdata(hdev); 677 struct input_dev *input = hi->input, *input2; 678 int ret; 679 int res_x, res_y, i; 680 681 data->input = input; 682 683 hid_dbg(hdev, "Opening low level driver\n"); 684 ret = hid_hw_open(hdev); 685 if (ret) 686 return ret; 687 688 /* Allow incoming hid reports */ 689 hid_device_io_start(hdev); 690 switch (data->dev_type) { 691 case T4: 692 ret = T4_init(hdev, data); 693 break; 694 case U1: 695 ret = u1_init(hdev, data); 696 break; 697 default: 698 break; 699 } 700 701 if (ret) 702 goto exit; 703 704 __set_bit(EV_ABS, input->evbit); 705 input_set_abs_params(input, ABS_MT_POSITION_X, 706 data->x_min, data->x_max, 0, 0); 707 input_set_abs_params(input, ABS_MT_POSITION_Y, 708 data->y_min, data->y_max, 0, 0); 709 710 if (data->x_active_len_mm && data->y_active_len_mm) { 711 res_x = (data->x_max - 1) / data->x_active_len_mm; 712 res_y = (data->y_max - 1) / data->y_active_len_mm; 713 714 input_abs_set_res(input, ABS_MT_POSITION_X, res_x); 715 input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); 716 } 717 718 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0); 719 720 input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); 721 722 __set_bit(EV_KEY, input->evbit); 723 724 if (data->btn_cnt == 1) 725 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); 726 727 for (i = 0; i < data->btn_cnt; i++) 728 __set_bit(BTN_LEFT + i, input->keybit); 729 730 /* Stick device initialization */ 731 if (data->has_sp) { 732 input2 = input_allocate_device(); 733 if (!input2) { 734 ret = -ENOMEM; 735 goto exit; 736 } 737 738 data->input2 = input2; 739 input2->phys = input->phys; 740 input2->name = "DualPoint Stick"; 741 input2->id.bustype = BUS_I2C; 742 input2->id.vendor = input->id.vendor; 743 input2->id.product = input->id.product; 744 input2->id.version = input->id.version; 745 input2->dev.parent = input->dev.parent; 746 747 input_set_drvdata(input2, hdev); 748 input2->open = alps_sp_open; 749 input2->close = alps_sp_close; 750 751 __set_bit(EV_KEY, input2->evbit); 752 data->sp_btn_cnt = (data->sp_btn_info & 0x0F); 753 for (i = 0; i < data->sp_btn_cnt; i++) 754 __set_bit(BTN_LEFT + i, input2->keybit); 755 756 __set_bit(EV_REL, input2->evbit); 757 __set_bit(REL_X, input2->relbit); 758 __set_bit(REL_Y, input2->relbit); 759 __set_bit(INPUT_PROP_POINTER, input2->propbit); 760 __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit); 761 762 if (input_register_device(data->input2)) { 763 input_free_device(input2); 764 ret = -ENOENT; 765 goto exit; 766 } 767 } 768 769 exit: 770 hid_device_io_stop(hdev); 771 hid_hw_close(hdev); 772 return ret; 773 } 774 775 static int alps_input_mapping(struct hid_device *hdev, 776 struct hid_input *hi, struct hid_field *field, 777 struct hid_usage *usage, unsigned long **bit, int *max) 778 { 779 return -1; 780 } 781 782 static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id) 783 { 784 struct alps_dev *data = NULL; 785 int ret; 786 data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL); 787 if (!data) 788 return -ENOMEM; 789 790 data->hdev = hdev; 791 hid_set_drvdata(hdev, data); 792 793 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; 794 795 ret = hid_parse(hdev); 796 if (ret) { 797 hid_err(hdev, "parse failed\n"); 798 return ret; 799 } 800 801 switch (hdev->product) { 802 case HID_DEVICE_ID_ALPS_T4_BTNLESS: 803 data->dev_type = T4; 804 break; 805 case HID_DEVICE_ID_ALPS_U1_DUAL: 806 case HID_DEVICE_ID_ALPS_U1: 807 case HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY: 808 data->dev_type = U1; 809 break; 810 default: 811 data->dev_type = UNKNOWN; 812 } 813 814 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 815 if (ret) { 816 hid_err(hdev, "hw start failed\n"); 817 return ret; 818 } 819 820 return 0; 821 } 822 823 static void alps_remove(struct hid_device *hdev) 824 { 825 hid_hw_stop(hdev); 826 } 827 828 static const struct hid_device_id alps_id[] = { 829 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 830 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) }, 831 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 832 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) }, 833 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, 834 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) }, 835 { } 836 }; 837 MODULE_DEVICE_TABLE(hid, alps_id); 838 839 static struct hid_driver alps_driver = { 840 .name = "hid-alps", 841 .id_table = alps_id, 842 .probe = alps_probe, 843 .remove = alps_remove, 844 .raw_event = alps_raw_event, 845 .input_mapping = alps_input_mapping, 846 .input_configured = alps_input_configured, 847 #ifdef CONFIG_PM 848 .resume = alps_post_resume, 849 .reset_resume = alps_post_reset, 850 #endif 851 }; 852 853 module_hid_driver(alps_driver); 854 855 MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>"); 856 MODULE_DESCRIPTION("ALPS HID driver"); 857 MODULE_LICENSE("GPL"); 858