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
74enum 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 */
99struct 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
118struct t4_contact_data {
119 u8 palm;
120 u8 x_lo;
121 u8 x_hi;
122 u8 y_lo;
123 u8 y_hi;
124};
125
126struct 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
138static 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
168static 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
248exit_readbuf:
249 kfree(readbuf);
250exit:
251 kfree(input);
252 return ret;
253}
254
255static 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
317exit:
318 kfree(input);
319 return ret;
320}
321
322static 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
361static 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
437static 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
454static 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
491exit:
492 return ret;
493}
494
495static int __maybe_unused alps_post_resume(struct hid_device *hdev)
496{
497 return alps_post_reset(hdev);
498}
499
500static 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;
608exit:
609 return ret;
610}
611
612static 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;
659exit:
660 return ret;
661}
662
663static 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
670static 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
677static 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
771exit:
772 hid_device_io_stop(hdev);
773 hid_hw_close(hdev);
774 return ret;
775}
776
777static 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
784static 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
824static void alps_remove(struct hid_device *hdev)
825{
826 hid_hw_stop(hdev);
827}
828
829static 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};
838MODULE_DEVICE_TABLE(hid, alps_id);
839
840static 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
854module_hid_driver(alps_driver);
855
856MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>");
857MODULE_DESCRIPTION("ALPS HID driver");
858MODULE_LICENSE("GPL");
859