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cxgb4: parse TC-U32 key values and masks natively
[mirror_ubuntu-hirsute-kernel.git] / drivers / hid / hid-alps.c
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_FEATURE_REPORT_ID 0x05 /* Feature ReportID */
29 #define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */
30
31 #define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */
32 #define U1_FEATURE_REPORT_LEN_ALL 0x0A
33 #define U1_CMD_REGISTER_READ 0xD1
34 #define U1_CMD_REGISTER_WRITE 0xD2
35
36 #define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */
37 #define U1_DISABLE_DEV 0x01
38 #define U1_TP_ABS_MODE 0x02
39 #define U1_SP_ABS_MODE 0x80
40
41 #define ADDRESS_U1_DEV_CTRL_1 0x00800040
42 #define ADDRESS_U1_DEVICE_TYP 0x00800043
43 #define ADDRESS_U1_NUM_SENS_X 0x00800047
44 #define ADDRESS_U1_NUM_SENS_Y 0x00800048
45 #define ADDRESS_U1_PITCH_SENS_X 0x00800049
46 #define ADDRESS_U1_PITCH_SENS_Y 0x0080004A
47 #define ADDRESS_U1_RESO_DWN_ABS 0x0080004E
48 #define ADDRESS_U1_PAD_BTN 0x00800052
49 #define ADDRESS_U1_SP_BTN 0x0080009F
50
51 #define T4_INPUT_REPORT_LEN sizeof(struct t4_input_report)
52 #define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN
53 #define T4_FEATURE_REPORT_ID 7
54 #define T4_CMD_REGISTER_READ 0x08
55 #define T4_CMD_REGISTER_WRITE 0x07
56
57 #define T4_ADDRESS_BASE 0xC2C0
58 #define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002)
59 #define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004)
60 #define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A)
61 #define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0)
62
63
64 #define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01
65 #define T4_I2C_ABS 0x78
66
67 #define T4_COUNT_PER_ELECTRODE 256
68 #define MAX_TOUCHES 5
69
70 enum dev_num {
71 U1,
72 T4,
73 UNKNOWN,
74 };
75 /**
76 * struct u1_data
77 *
78 * @input: pointer to the kernel input device
79 * @input2: pointer to the kernel input2 device
80 * @hdev: pointer to the struct hid_device
81 *
82 * @dev_type: device type
83 * @max_fingers: total number of fingers
84 * @has_sp: boolean of sp existense
85 * @sp_btn_info: button information
86 * @x_active_len_mm: active area length of X (mm)
87 * @y_active_len_mm: active area length of Y (mm)
88 * @x_max: maximum x coordinate value
89 * @y_max: maximum y coordinate value
90 * @x_min: minimum x coordinate value
91 * @y_min: minimum y coordinate value
92 * @btn_cnt: number of buttons
93 * @sp_btn_cnt: number of stick buttons
94 */
95 struct alps_dev {
96 struct input_dev *input;
97 struct input_dev *input2;
98 struct hid_device *hdev;
99
100 enum dev_num dev_type;
101 u8 max_fingers;
102 u8 has_sp;
103 u8 sp_btn_info;
104 u32 x_active_len_mm;
105 u32 y_active_len_mm;
106 u32 x_max;
107 u32 y_max;
108 u32 x_min;
109 u32 y_min;
110 u32 btn_cnt;
111 u32 sp_btn_cnt;
112 };
113
114 struct t4_contact_data {
115 u8 palm;
116 u8 x_lo;
117 u8 x_hi;
118 u8 y_lo;
119 u8 y_hi;
120 };
121
122 struct t4_input_report {
123 u8 reportID;
124 u8 numContacts;
125 struct t4_contact_data contact[5];
126 u8 button;
127 u8 track[5];
128 u8 zx[5], zy[5];
129 u8 palmTime[5];
130 u8 kilroy;
131 u16 timeStamp;
132 };
133
134 static u16 t4_calc_check_sum(u8 *buffer,
135 unsigned long offset, unsigned long length)
136 {
137 u16 sum1 = 0xFF, sum2 = 0xFF;
138 unsigned long i = 0;
139
140 if (offset + length >= 50)
141 return 0;
142
143 while (length > 0) {
144 u32 tlen = length > 20 ? 20 : length;
145
146 length -= tlen;
147
148 do {
149 sum1 += buffer[offset + i];
150 sum2 += sum1;
151 i++;
152 } while (--tlen > 0);
153
154 sum1 = (sum1 & 0xFF) + (sum1 >> 8);
155 sum2 = (sum2 & 0xFF) + (sum2 >> 8);
156 }
157
158 sum1 = (sum1 & 0xFF) + (sum1 >> 8);
159 sum2 = (sum2 & 0xFF) + (sum2 >> 8);
160
161 return(sum2 << 8 | sum1);
162 }
163
164 static int t4_read_write_register(struct hid_device *hdev, u32 address,
165 u8 *read_val, u8 write_val, bool read_flag)
166 {
167 int ret;
168 u16 check_sum;
169 u8 *input;
170 u8 *readbuf = NULL;
171
172 input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
173 if (!input)
174 return -ENOMEM;
175
176 input[0] = T4_FEATURE_REPORT_ID;
177 if (read_flag) {
178 input[1] = T4_CMD_REGISTER_READ;
179 input[8] = 0x00;
180 } else {
181 input[1] = T4_CMD_REGISTER_WRITE;
182 input[8] = write_val;
183 }
184 put_unaligned_le32(address, input + 2);
185 input[6] = 1;
186 input[7] = 0;
187
188 /* Calculate the checksum */
189 check_sum = t4_calc_check_sum(input, 1, 8);
190 input[9] = (u8)check_sum;
191 input[10] = (u8)(check_sum >> 8);
192 input[11] = 0;
193
194 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input,
195 T4_FEATURE_REPORT_LEN,
196 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
197
198 if (ret < 0) {
199 dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
200 goto exit;
201 }
202
203 if (read_flag) {
204 readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
205 if (!readbuf) {
206 ret = -ENOMEM;
207 goto exit;
208 }
209
210 ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf,
211 T4_FEATURE_REPORT_LEN,
212 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
213 if (ret < 0) {
214 dev_err(&hdev->dev, "failed read register (%d)\n", ret);
215 goto exit_readbuf;
216 }
217
218 ret = -EINVAL;
219
220 if (*(u32 *)&readbuf[6] != address) {
221 dev_err(&hdev->dev, "read register address error (%x,%x)\n",
222 *(u32 *)&readbuf[6], address);
223 goto exit_readbuf;
224 }
225
226 if (*(u16 *)&readbuf[10] != 1) {
227 dev_err(&hdev->dev, "read register size error (%x)\n",
228 *(u16 *)&readbuf[10]);
229 goto exit_readbuf;
230 }
231
232 check_sum = t4_calc_check_sum(readbuf, 6, 7);
233 if (*(u16 *)&readbuf[13] != check_sum) {
234 dev_err(&hdev->dev, "read register checksum error (%x,%x)\n",
235 *(u16 *)&readbuf[13], check_sum);
236 goto exit_readbuf;
237 }
238
239 *read_val = readbuf[12];
240 }
241
242 ret = 0;
243
244 exit_readbuf:
245 kfree(readbuf);
246 exit:
247 kfree(input);
248 return ret;
249 }
250
251 static int u1_read_write_register(struct hid_device *hdev, u32 address,
252 u8 *read_val, u8 write_val, bool read_flag)
253 {
254 int ret, i;
255 u8 check_sum;
256 u8 *input;
257 u8 *readbuf;
258
259 input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
260 if (!input)
261 return -ENOMEM;
262
263 input[0] = U1_FEATURE_REPORT_ID;
264 if (read_flag) {
265 input[1] = U1_CMD_REGISTER_READ;
266 input[6] = 0x00;
267 } else {
268 input[1] = U1_CMD_REGISTER_WRITE;
269 input[6] = write_val;
270 }
271
272 put_unaligned_le32(address, input + 2);
273
274 /* Calculate the checksum */
275 check_sum = U1_FEATURE_REPORT_LEN_ALL;
276 for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++)
277 check_sum += input[i];
278
279 input[7] = check_sum;
280 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input,
281 U1_FEATURE_REPORT_LEN,
282 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
283
284 if (ret < 0) {
285 dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
286 goto exit;
287 }
288
289 if (read_flag) {
290 readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
291 if (!readbuf) {
292 ret = -ENOMEM;
293 goto exit;
294 }
295
296 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
297 U1_FEATURE_REPORT_LEN,
298 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
299
300 if (ret < 0) {
301 dev_err(&hdev->dev, "failed read register (%d)\n", ret);
302 kfree(readbuf);
303 goto exit;
304 }
305
306 *read_val = readbuf[6];
307
308 kfree(readbuf);
309 }
310
311 ret = 0;
312
313 exit:
314 kfree(input);
315 return ret;
316 }
317
318 static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size)
319 {
320 unsigned int x, y, z;
321 int i;
322 struct t4_input_report *p_report = (struct t4_input_report *)data;
323
324 if (!data)
325 return 0;
326 for (i = 0; i < hdata->max_fingers; i++) {
327 x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo;
328 y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo;
329 y = hdata->y_max - y + hdata->y_min;
330 z = (p_report->contact[i].palm < 0x80 &&
331 p_report->contact[i].palm > 0) * 62;
332 if (x == 0xffff) {
333 x = 0;
334 y = 0;
335 z = 0;
336 }
337 input_mt_slot(hdata->input, i);
338
339 input_mt_report_slot_state(hdata->input,
340 MT_TOOL_FINGER, z != 0);
341
342 if (!z)
343 continue;
344
345 input_report_abs(hdata->input, ABS_MT_POSITION_X, x);
346 input_report_abs(hdata->input, ABS_MT_POSITION_Y, y);
347 input_report_abs(hdata->input, ABS_MT_PRESSURE, z);
348 }
349 input_mt_sync_frame(hdata->input);
350
351 input_report_key(hdata->input, BTN_LEFT, p_report->button);
352
353 input_sync(hdata->input);
354 return 1;
355 }
356
357 static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size)
358 {
359 unsigned int x, y, z;
360 int i;
361 short sp_x, sp_y;
362
363 if (!data)
364 return 0;
365 switch (data[0]) {
366 case U1_MOUSE_REPORT_ID:
367 break;
368 case U1_FEATURE_REPORT_ID:
369 break;
370 case U1_ABSOLUTE_REPORT_ID:
371 for (i = 0; i < hdata->max_fingers; i++) {
372 u8 *contact = &data[i * 5];
373
374 x = get_unaligned_le16(contact + 3);
375 y = get_unaligned_le16(contact + 5);
376 z = contact[7] & 0x7F;
377
378 input_mt_slot(hdata->input, i);
379
380 if (z != 0) {
381 input_mt_report_slot_state(hdata->input,
382 MT_TOOL_FINGER, 1);
383 input_report_abs(hdata->input,
384 ABS_MT_POSITION_X, x);
385 input_report_abs(hdata->input,
386 ABS_MT_POSITION_Y, y);
387 input_report_abs(hdata->input,
388 ABS_MT_PRESSURE, z);
389 } else {
390 input_mt_report_slot_inactive(hdata->input);
391 }
392 }
393
394 input_mt_sync_frame(hdata->input);
395
396 input_report_key(hdata->input, BTN_LEFT,
397 data[1] & 0x1);
398 input_report_key(hdata->input, BTN_RIGHT,
399 (data[1] & 0x2));
400 input_report_key(hdata->input, BTN_MIDDLE,
401 (data[1] & 0x4));
402
403 input_sync(hdata->input);
404
405 return 1;
406
407 case U1_SP_ABSOLUTE_REPORT_ID:
408 sp_x = get_unaligned_le16(data+2);
409 sp_y = get_unaligned_le16(data+4);
410
411 sp_x = sp_x / 8;
412 sp_y = sp_y / 8;
413
414 input_report_rel(hdata->input2, REL_X, sp_x);
415 input_report_rel(hdata->input2, REL_Y, sp_y);
416
417 input_report_key(hdata->input2, BTN_LEFT,
418 data[1] & 0x1);
419 input_report_key(hdata->input2, BTN_RIGHT,
420 (data[1] & 0x2));
421 input_report_key(hdata->input2, BTN_MIDDLE,
422 (data[1] & 0x4));
423
424 input_sync(hdata->input2);
425
426 return 1;
427 }
428
429 return 0;
430 }
431
432 static int alps_raw_event(struct hid_device *hdev,
433 struct hid_report *report, u8 *data, int size)
434 {
435 int ret = 0;
436 struct alps_dev *hdata = hid_get_drvdata(hdev);
437
438 switch (hdev->product) {
439 case HID_PRODUCT_ID_T4_BTNLESS:
440 ret = t4_raw_event(hdata, data, size);
441 break;
442 default:
443 ret = u1_raw_event(hdata, data, size);
444 break;
445 }
446 return ret;
447 }
448
449 static int __maybe_unused alps_post_reset(struct hid_device *hdev)
450 {
451 int ret = -1;
452 struct alps_dev *data = hid_get_drvdata(hdev);
453
454 switch (data->dev_type) {
455 case T4:
456 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
457 NULL, T4_I2C_ABS, false);
458 if (ret < 0) {
459 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n",
460 ret);
461 goto exit;
462 }
463
464 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
465 NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
466 if (ret < 0) {
467 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n",
468 ret);
469 goto exit;
470 }
471 break;
472 case U1:
473 ret = u1_read_write_register(hdev,
474 ADDRESS_U1_DEV_CTRL_1, NULL,
475 U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
476 if (ret < 0) {
477 dev_err(&hdev->dev, "failed to change TP mode (%d)\n",
478 ret);
479 goto exit;
480 }
481 break;
482 default:
483 break;
484 }
485
486 exit:
487 return ret;
488 }
489
490 static int __maybe_unused alps_post_resume(struct hid_device *hdev)
491 {
492 return alps_post_reset(hdev);
493 }
494
495 static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
496 {
497 int ret;
498 u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
499 u8 pitch_x, pitch_y, resolution;
500
501 /* Device initialization */
502 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
503 &dev_ctrl, 0, true);
504 if (ret < 0) {
505 dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
506 goto exit;
507 }
508
509 dev_ctrl &= ~U1_DISABLE_DEV;
510 dev_ctrl |= U1_TP_ABS_MODE;
511 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
512 NULL, dev_ctrl, false);
513 if (ret < 0) {
514 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
515 goto exit;
516 }
517
518 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
519 &sen_line_num_x, 0, true);
520 if (ret < 0) {
521 dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
522 goto exit;
523 }
524
525 ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
526 &sen_line_num_y, 0, true);
527 if (ret < 0) {
528 dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
529 goto exit;
530 }
531
532 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
533 &pitch_x, 0, true);
534 if (ret < 0) {
535 dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
536 goto exit;
537 }
538
539 ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
540 &pitch_y, 0, true);
541 if (ret < 0) {
542 dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
543 goto exit;
544 }
545
546 ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
547 &resolution, 0, true);
548 if (ret < 0) {
549 dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
550 goto exit;
551 }
552 pri_data->x_active_len_mm =
553 (pitch_x * (sen_line_num_x - 1)) / 10;
554 pri_data->y_active_len_mm =
555 (pitch_y * (sen_line_num_y - 1)) / 10;
556
557 pri_data->x_max =
558 (resolution << 2) * (sen_line_num_x - 1);
559 pri_data->x_min = 1;
560 pri_data->y_max =
561 (resolution << 2) * (sen_line_num_y - 1);
562 pri_data->y_min = 1;
563
564 ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
565 &tmp, 0, true);
566 if (ret < 0) {
567 dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
568 goto exit;
569 }
570 if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {
571 pri_data->btn_cnt = (tmp & 0x0F);
572 } else {
573 /* Button pad */
574 pri_data->btn_cnt = 1;
575 }
576
577 pri_data->has_sp = 0;
578 /* Check StickPointer device */
579 ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
580 &tmp, 0, true);
581 if (ret < 0) {
582 dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
583 goto exit;
584 }
585 if (tmp & U1_DEVTYPE_SP_SUPPORT) {
586 dev_ctrl |= U1_SP_ABS_MODE;
587 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
588 NULL, dev_ctrl, false);
589 if (ret < 0) {
590 dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
591 goto exit;
592 }
593
594 ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
595 &pri_data->sp_btn_info, 0, true);
596 if (ret < 0) {
597 dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
598 goto exit;
599 }
600 pri_data->has_sp = 1;
601 }
602 pri_data->max_fingers = 5;
603 exit:
604 return ret;
605 }
606
607 static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
608 {
609 int ret;
610 u8 tmp, sen_line_num_x, sen_line_num_y;
611
612 ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
613 if (ret < 0) {
614 dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret);
615 goto exit;
616 }
617 sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0));
618 sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0));
619
620 pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE;
621 pri_data->x_min = T4_COUNT_PER_ELECTRODE;
622 pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE;
623 pri_data->y_min = T4_COUNT_PER_ELECTRODE;
624 pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0;
625 pri_data->btn_cnt = 1;
626
627 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
628 if (ret < 0) {
629 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
630 goto exit;
631 }
632 tmp |= 0x02;
633 ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
634 if (ret < 0) {
635 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
636 goto exit;
637 }
638
639 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
640 NULL, T4_I2C_ABS, false);
641 if (ret < 0) {
642 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret);
643 goto exit;
644 }
645
646 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,
647 T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
648 if (ret < 0) {
649 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret);
650 goto exit;
651 }
652 pri_data->max_fingers = 5;
653 pri_data->has_sp = 0;
654 exit:
655 return ret;
656 }
657
658 static int alps_sp_open(struct input_dev *dev)
659 {
660 struct hid_device *hid = input_get_drvdata(dev);
661
662 return hid_hw_open(hid);
663 }
664
665 static void alps_sp_close(struct input_dev *dev)
666 {
667 struct hid_device *hid = input_get_drvdata(dev);
668
669 hid_hw_close(hid);
670 }
671
672 static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
673 {
674 struct alps_dev *data = hid_get_drvdata(hdev);
675 struct input_dev *input = hi->input, *input2;
676 int ret;
677 int res_x, res_y, i;
678
679 data->input = input;
680
681 hid_dbg(hdev, "Opening low level driver\n");
682 ret = hid_hw_open(hdev);
683 if (ret)
684 return ret;
685
686 /* Allow incoming hid reports */
687 hid_device_io_start(hdev);
688 switch (data->dev_type) {
689 case T4:
690 ret = T4_init(hdev, data);
691 break;
692 case U1:
693 ret = u1_init(hdev, data);
694 break;
695 default:
696 break;
697 }
698
699 if (ret)
700 goto exit;
701
702 __set_bit(EV_ABS, input->evbit);
703 input_set_abs_params(input, ABS_MT_POSITION_X,
704 data->x_min, data->x_max, 0, 0);
705 input_set_abs_params(input, ABS_MT_POSITION_Y,
706 data->y_min, data->y_max, 0, 0);
707
708 if (data->x_active_len_mm && data->y_active_len_mm) {
709 res_x = (data->x_max - 1) / data->x_active_len_mm;
710 res_y = (data->y_max - 1) / data->y_active_len_mm;
711
712 input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
713 input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
714 }
715
716 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
717
718 input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER);
719
720 __set_bit(EV_KEY, input->evbit);
721
722 if (data->btn_cnt == 1)
723 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
724
725 for (i = 0; i < data->btn_cnt; i++)
726 __set_bit(BTN_LEFT + i, input->keybit);
727
728 /* Stick device initialization */
729 if (data->has_sp) {
730 input2 = input_allocate_device();
731 if (!input2) {
732 ret = -ENOMEM;
733 goto exit;
734 }
735
736 data->input2 = input2;
737 input2->phys = input->phys;
738 input2->name = "DualPoint Stick";
739 input2->id.bustype = BUS_I2C;
740 input2->id.vendor = input->id.vendor;
741 input2->id.product = input->id.product;
742 input2->id.version = input->id.version;
743 input2->dev.parent = input->dev.parent;
744
745 input_set_drvdata(input2, hdev);
746 input2->open = alps_sp_open;
747 input2->close = alps_sp_close;
748
749 __set_bit(EV_KEY, input2->evbit);
750 data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
751 for (i = 0; i < data->sp_btn_cnt; i++)
752 __set_bit(BTN_LEFT + i, input2->keybit);
753
754 __set_bit(EV_REL, input2->evbit);
755 __set_bit(REL_X, input2->relbit);
756 __set_bit(REL_Y, input2->relbit);
757 __set_bit(INPUT_PROP_POINTER, input2->propbit);
758 __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
759
760 if (input_register_device(data->input2)) {
761 input_free_device(input2);
762 goto exit;
763 }
764 }
765
766 exit:
767 hid_device_io_stop(hdev);
768 hid_hw_close(hdev);
769 return ret;
770 }
771
772 static int alps_input_mapping(struct hid_device *hdev,
773 struct hid_input *hi, struct hid_field *field,
774 struct hid_usage *usage, unsigned long **bit, int *max)
775 {
776 return -1;
777 }
778
779 static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
780 {
781 struct alps_dev *data = NULL;
782 int ret;
783 data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL);
784 if (!data)
785 return -ENOMEM;
786
787 data->hdev = hdev;
788 hid_set_drvdata(hdev, data);
789
790 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
791
792 ret = hid_parse(hdev);
793 if (ret) {
794 hid_err(hdev, "parse failed\n");
795 return ret;
796 }
797
798 switch (hdev->product) {
799 case HID_DEVICE_ID_ALPS_T4_BTNLESS:
800 data->dev_type = T4;
801 break;
802 case HID_DEVICE_ID_ALPS_U1_DUAL:
803 case HID_DEVICE_ID_ALPS_U1:
804 case HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY:
805 data->dev_type = U1;
806 break;
807 default:
808 data->dev_type = UNKNOWN;
809 }
810
811 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
812 if (ret) {
813 hid_err(hdev, "hw start failed\n");
814 return ret;
815 }
816
817 return 0;
818 }
819
820 static void alps_remove(struct hid_device *hdev)
821 {
822 hid_hw_stop(hdev);
823 }
824
825 static const struct hid_device_id alps_id[] = {
826 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
827 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
828 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
829 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
830 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
831 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
832 { }
833 };
834 MODULE_DEVICE_TABLE(hid, alps_id);
835
836 static struct hid_driver alps_driver = {
837 .name = "hid-alps",
838 .id_table = alps_id,
839 .probe = alps_probe,
840 .remove = alps_remove,
841 .raw_event = alps_raw_event,
842 .input_mapping = alps_input_mapping,
843 .input_configured = alps_input_configured,
844 #ifdef CONFIG_PM
845 .resume = alps_post_resume,
846 .reset_resume = alps_post_reset,
847 #endif
848 };
849
850 module_hid_driver(alps_driver);
851
852 MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>");
853 MODULE_DESCRIPTION("ALPS HID driver");
854 MODULE_LICENSE("GPL");
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