b1eeb4839bfc8f4747a1610077fda3ae6c7e77a7
[sfrench/cifs-2.6.git] / drivers / hid / hid-alps.c
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;
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         readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
208         if (read_flag) {
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                 if (*(u32 *)&readbuf[6] != address) {
223                         dev_err(&hdev->dev, "read register address error (%x,%x)\n",
224                         *(u32 *)&readbuf[6], address);
225                         goto exit_readbuf;
226                 }
227
228                 if (*(u16 *)&readbuf[10] != 1) {
229                         dev_err(&hdev->dev, "read register size error (%x)\n",
230                         *(u16 *)&readbuf[10]);
231                         goto exit_readbuf;
232                 }
233
234                 check_sum = t4_calc_check_sum(readbuf, 6, 7);
235                 if (*(u16 *)&readbuf[13] != check_sum) {
236                         dev_err(&hdev->dev, "read register checksum error (%x,%x)\n",
237                         *(u16 *)&readbuf[13], check_sum);
238                         goto exit_readbuf;
239                 }
240
241                 *read_val = readbuf[12];
242         }
243
244         ret = 0;
245
246 exit_readbuf:
247         kfree(readbuf);
248 exit:
249         kfree(input);
250         return ret;
251 }
252
253 static int u1_read_write_register(struct hid_device *hdev, u32 address,
254         u8 *read_val, u8 write_val, bool read_flag)
255 {
256         int ret, i;
257         u8 check_sum;
258         u8 *input;
259         u8 *readbuf;
260
261         input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
262         if (!input)
263                 return -ENOMEM;
264
265         input[0] = U1_FEATURE_REPORT_ID;
266         if (read_flag) {
267                 input[1] = U1_CMD_REGISTER_READ;
268                 input[6] = 0x00;
269         } else {
270                 input[1] = U1_CMD_REGISTER_WRITE;
271                 input[6] = write_val;
272         }
273
274         put_unaligned_le32(address, input + 2);
275
276         /* Calculate the checksum */
277         check_sum = U1_FEATURE_REPORT_LEN_ALL;
278         for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++)
279                 check_sum += input[i];
280
281         input[7] = check_sum;
282         ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input,
283                         U1_FEATURE_REPORT_LEN,
284                         HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
285
286         if (ret < 0) {
287                 dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
288                 goto exit;
289         }
290
291         if (read_flag) {
292                 readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
293                 if (!readbuf) {
294                         ret = -ENOMEM;
295                         goto exit;
296                 }
297
298                 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
299                                 U1_FEATURE_REPORT_LEN,
300                                 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
301
302                 if (ret < 0) {
303                         dev_err(&hdev->dev, "failed read register (%d)\n", ret);
304                         kfree(readbuf);
305                         goto exit;
306                 }
307
308                 *read_val = readbuf[6];
309
310                 kfree(readbuf);
311         }
312
313         ret = 0;
314
315 exit:
316         kfree(input);
317         return ret;
318 }
319
320 static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size)
321 {
322         unsigned int x, y, z;
323         int i;
324         struct t4_input_report *p_report = (struct t4_input_report *)data;
325
326         if (!data)
327                 return 0;
328         for (i = 0; i < hdata->max_fingers; i++) {
329                 x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo;
330                 y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo;
331                 y = hdata->y_max - y + hdata->y_min;
332                 z = (p_report->contact[i].palm < 0x80 &&
333                         p_report->contact[i].palm > 0) * 62;
334                 if (x == 0xffff) {
335                         x = 0;
336                         y = 0;
337                         z = 0;
338                 }
339                 input_mt_slot(hdata->input, i);
340
341                 input_mt_report_slot_state(hdata->input,
342                         MT_TOOL_FINGER, z != 0);
343
344                 if (!z)
345                         continue;
346
347                 input_report_abs(hdata->input, ABS_MT_POSITION_X, x);
348                 input_report_abs(hdata->input, ABS_MT_POSITION_Y, y);
349                 input_report_abs(hdata->input, ABS_MT_PRESSURE, z);
350         }
351         input_mt_sync_frame(hdata->input);
352
353         input_report_key(hdata->input, BTN_LEFT, p_report->button);
354
355         input_sync(hdata->input);
356         return 1;
357 }
358
359 static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size)
360 {
361         unsigned int x, y, z;
362         int i;
363         short sp_x, sp_y;
364
365         if (!data)
366                 return 0;
367         switch (data[0]) {
368         case U1_MOUSE_REPORT_ID:
369                 break;
370         case U1_FEATURE_REPORT_ID:
371                 break;
372         case U1_ABSOLUTE_REPORT_ID:
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_state(hdata->input,
393                                         MT_TOOL_FINGER, 0);
394                         }
395                 }
396
397                 input_mt_sync_frame(hdata->input);
398
399                 input_report_key(hdata->input, BTN_LEFT,
400                         data[1] & 0x1);
401                 input_report_key(hdata->input, BTN_RIGHT,
402                         (data[1] & 0x2));
403                 input_report_key(hdata->input, BTN_MIDDLE,
404                         (data[1] & 0x4));
405
406                 input_sync(hdata->input);
407
408                 return 1;
409
410         case U1_SP_ABSOLUTE_REPORT_ID:
411                 sp_x = get_unaligned_le16(data+2);
412                 sp_y = get_unaligned_le16(data+4);
413
414                 sp_x = sp_x / 8;
415                 sp_y = sp_y / 8;
416
417                 input_report_rel(hdata->input2, REL_X, sp_x);
418                 input_report_rel(hdata->input2, REL_Y, sp_y);
419
420                 input_report_key(hdata->input2, BTN_LEFT,
421                         data[1] & 0x1);
422                 input_report_key(hdata->input2, BTN_RIGHT,
423                         (data[1] & 0x2));
424                 input_report_key(hdata->input2, BTN_MIDDLE,
425                         (data[1] & 0x4));
426
427                 input_sync(hdata->input2);
428
429                 return 1;
430         }
431
432         return 0;
433 }
434
435 static int alps_raw_event(struct hid_device *hdev,
436                 struct hid_report *report, u8 *data, int size)
437 {
438         int ret = 0;
439         struct alps_dev *hdata = hid_get_drvdata(hdev);
440
441         switch (hdev->product) {
442         case HID_PRODUCT_ID_T4_BTNLESS:
443                 ret = t4_raw_event(hdata, data, size);
444                 break;
445         default:
446                 ret = u1_raw_event(hdata, data, size);
447                 break;
448         }
449         return ret;
450 }
451
452 static int __maybe_unused alps_post_reset(struct hid_device *hdev)
453 {
454         int ret = -1;
455         struct alps_dev *data = hid_get_drvdata(hdev);
456
457         switch (data->dev_type) {
458         case T4:
459                 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
460                         NULL, T4_I2C_ABS, false);
461                 ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
462                         NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
463                 break;
464         case U1:
465                 ret = u1_read_write_register(hdev,
466                         ADDRESS_U1_DEV_CTRL_1, NULL,
467                         U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
468                 break;
469         default:
470                 break;
471         }
472         return ret;
473 }
474
475 static int __maybe_unused alps_post_resume(struct hid_device *hdev)
476 {
477         return alps_post_reset(hdev);
478 }
479
480 static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
481 {
482         int ret;
483         u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
484         u8 pitch_x, pitch_y, resolution;
485
486         /* Device initialization */
487         ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
488                         &dev_ctrl, 0, true);
489         if (ret < 0) {
490                 dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
491                 goto exit;
492         }
493
494         dev_ctrl &= ~U1_DISABLE_DEV;
495         dev_ctrl |= U1_TP_ABS_MODE;
496         ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
497                         NULL, dev_ctrl, false);
498         if (ret < 0) {
499                 dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
500                 goto exit;
501         }
502
503         ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
504                         &sen_line_num_x, 0, true);
505         if (ret < 0) {
506                 dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
507                 goto exit;
508         }
509
510         ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
511                         &sen_line_num_y, 0, true);
512                 if (ret < 0) {
513                 dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
514                 goto exit;
515         }
516
517         ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
518                         &pitch_x, 0, true);
519         if (ret < 0) {
520                 dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
521                 goto exit;
522         }
523
524         ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
525                         &pitch_y, 0, true);
526         if (ret < 0) {
527                 dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
528                 goto exit;
529         }
530
531         ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
532                 &resolution, 0, true);
533         if (ret < 0) {
534                 dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
535                 goto exit;
536         }
537         pri_data->x_active_len_mm =
538                 (pitch_x * (sen_line_num_x - 1)) / 10;
539         pri_data->y_active_len_mm =
540                 (pitch_y * (sen_line_num_y - 1)) / 10;
541
542         pri_data->x_max =
543                 (resolution << 2) * (sen_line_num_x - 1);
544         pri_data->x_min = 1;
545         pri_data->y_max =
546                 (resolution << 2) * (sen_line_num_y - 1);
547         pri_data->y_min = 1;
548
549         ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
550                         &tmp, 0, true);
551         if (ret < 0) {
552                 dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
553                 goto exit;
554         }
555         if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {
556                 pri_data->btn_cnt = (tmp & 0x0F);
557         } else {
558                 /* Button pad */
559                 pri_data->btn_cnt = 1;
560         }
561
562         pri_data->has_sp = 0;
563         /* Check StickPointer device */
564         ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
565                         &tmp, 0, true);
566         if (ret < 0) {
567                 dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
568                 goto exit;
569         }
570         if (tmp & U1_DEVTYPE_SP_SUPPORT) {
571                 dev_ctrl |= U1_SP_ABS_MODE;
572                 ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
573                         NULL, dev_ctrl, false);
574                 if (ret < 0) {
575                         dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
576                         goto exit;
577                 }
578
579                 ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
580                         &pri_data->sp_btn_info, 0, true);
581                 if (ret < 0) {
582                         dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
583                         goto exit;
584                 }
585                 pri_data->has_sp = 1;
586         }
587         pri_data->max_fingers = 5;
588 exit:
589         return ret;
590 }
591
592 static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
593 {
594         int ret;
595         u8 tmp, sen_line_num_x, sen_line_num_y;
596
597         ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
598         if (ret < 0) {
599                 dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret);
600                 goto exit;
601         }
602         sen_line_num_x = 16 + ((tmp & 0x0F)  | (tmp & 0x08 ? 0xF0 : 0));
603         sen_line_num_y = 12 + (((tmp & 0xF0) >> 4)  | (tmp & 0x80 ? 0xF0 : 0));
604
605         pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE;
606         pri_data->x_min = T4_COUNT_PER_ELECTRODE;
607         pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE;
608         pri_data->y_min = T4_COUNT_PER_ELECTRODE;
609         pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0;
610         pri_data->btn_cnt = 1;
611
612         ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
613         if (ret < 0) {
614                 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
615                 goto exit;
616         }
617         tmp |= 0x02;
618         ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
619         if (ret < 0) {
620                 dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
621                 goto exit;
622         }
623
624         ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
625                                         NULL, T4_I2C_ABS, false);
626         if (ret < 0) {
627                 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret);
628                 goto exit;
629         }
630
631         ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,
632                                 T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
633         if (ret < 0) {
634                 dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret);
635                 goto exit;
636         }
637         pri_data->max_fingers = 5;
638         pri_data->has_sp = 0;
639 exit:
640         return ret;
641 }
642
643 static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
644 {
645         struct alps_dev *data = hid_get_drvdata(hdev);
646         struct input_dev *input = hi->input, *input2;
647         int ret;
648         int res_x, res_y, i;
649
650         data->input = input;
651
652         hid_dbg(hdev, "Opening low level driver\n");
653         ret = hid_hw_open(hdev);
654         if (ret)
655                 return ret;
656
657         /* Allow incoming hid reports */
658         hid_device_io_start(hdev);
659         switch (data->dev_type) {
660         case T4:
661                 ret = T4_init(hdev, data);
662                 break;
663         case U1:
664                 ret = u1_init(hdev, data);
665                 break;
666         default:
667                 break;
668         }
669
670         if (ret)
671                 goto exit;
672
673         __set_bit(EV_ABS, input->evbit);
674         input_set_abs_params(input, ABS_MT_POSITION_X,
675                                                 data->x_min, data->x_max, 0, 0);
676         input_set_abs_params(input, ABS_MT_POSITION_Y,
677                                                 data->y_min, data->y_max, 0, 0);
678
679         if (data->x_active_len_mm && data->y_active_len_mm) {
680                 res_x = (data->x_max - 1) / data->x_active_len_mm;
681                 res_y = (data->y_max - 1) / data->y_active_len_mm;
682
683                 input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
684                 input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
685         }
686
687         input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
688
689         input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER);
690
691         __set_bit(EV_KEY, input->evbit);
692
693         if (data->btn_cnt == 1)
694                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
695
696         for (i = 0; i < data->btn_cnt; i++)
697                 __set_bit(BTN_LEFT + i, input->keybit);
698
699         /* Stick device initialization */
700         if (data->has_sp) {
701                 input2 = input_allocate_device();
702                 if (!input2) {
703                         input_free_device(input2);
704                         goto exit;
705                 }
706
707                 data->input2 = input2;
708                 input2->phys = input->phys;
709                 input2->name = "DualPoint Stick";
710                 input2->id.bustype = BUS_I2C;
711                 input2->id.vendor  = input->id.vendor;
712                 input2->id.product = input->id.product;
713                 input2->id.version = input->id.version;
714                 input2->dev.parent = input->dev.parent;
715
716                 __set_bit(EV_KEY, input2->evbit);
717                 data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
718                 for (i = 0; i < data->sp_btn_cnt; i++)
719                         __set_bit(BTN_LEFT + i, input2->keybit);
720
721                 __set_bit(EV_REL, input2->evbit);
722                 __set_bit(REL_X, input2->relbit);
723                 __set_bit(REL_Y, input2->relbit);
724                 __set_bit(INPUT_PROP_POINTER, input2->propbit);
725                 __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
726
727                 if (input_register_device(data->input2)) {
728                         input_free_device(input2);
729                         goto exit;
730                 }
731         }
732
733 exit:
734         hid_device_io_stop(hdev);
735         hid_hw_close(hdev);
736         return ret;
737 }
738
739 static int alps_input_mapping(struct hid_device *hdev,
740                 struct hid_input *hi, struct hid_field *field,
741                 struct hid_usage *usage, unsigned long **bit, int *max)
742 {
743         return -1;
744 }
745
746 static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
747 {
748         struct alps_dev *data = NULL;
749         int ret;
750         data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL);
751         if (!data)
752                 return -ENOMEM;
753
754         data->hdev = hdev;
755         hid_set_drvdata(hdev, data);
756
757         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
758
759         ret = hid_parse(hdev);
760         if (ret) {
761                 hid_err(hdev, "parse failed\n");
762                 return ret;
763         }
764
765         switch (hdev->product) {
766         case HID_DEVICE_ID_ALPS_T4_BTNLESS:
767                 data->dev_type = T4;
768                 break;
769         case HID_DEVICE_ID_ALPS_U1_DUAL:
770         case HID_DEVICE_ID_ALPS_U1:
771                 data->dev_type = U1;
772                 break;
773         default:
774                 data->dev_type = UNKNOWN;
775         }
776
777         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
778         if (ret) {
779                 hid_err(hdev, "hw start failed\n");
780                 return ret;
781         }
782
783         return 0;
784 }
785
786 static void alps_remove(struct hid_device *hdev)
787 {
788         hid_hw_stop(hdev);
789 }
790
791 static const struct hid_device_id alps_id[] = {
792         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
793                 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
794         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
795                 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
796         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
797                 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
798         { }
799 };
800 MODULE_DEVICE_TABLE(hid, alps_id);
801
802 static struct hid_driver alps_driver = {
803         .name = "hid-alps",
804         .id_table               = alps_id,
805         .probe                  = alps_probe,
806         .remove                 = alps_remove,
807         .raw_event              = alps_raw_event,
808         .input_mapping          = alps_input_mapping,
809         .input_configured       = alps_input_configured,
810 #ifdef CONFIG_PM
811         .resume                 = alps_post_resume,
812         .reset_resume           = alps_post_reset,
813 #endif
814 };
815
816 module_hid_driver(alps_driver);
817
818 MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>");
819 MODULE_DESCRIPTION("ALPS HID driver");
820 MODULE_LICENSE("GPL");