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(val: address, p: input + 2); |
186 | input[6] = 1; |
187 | input[7] = 0; |
188 | |
189 | /* Calculate the checksum */ |
190 | check_sum = t4_calc_check_sum(buffer: input, offset: 1, length: 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, buf: input, |
196 | T4_FEATURE_REPORT_LEN, |
197 | rtype: HID_FEATURE_REPORT, reqtype: 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, buf: readbuf, |
212 | T4_FEATURE_REPORT_LEN, |
213 | rtype: HID_FEATURE_REPORT, reqtype: 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(buffer: readbuf, offset: 6, length: 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(objp: readbuf); |
247 | exit: |
248 | kfree(objp: 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(val: address, p: 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, buf: input, |
282 | U1_FEATURE_REPORT_LEN, |
283 | rtype: HID_FEATURE_REPORT, reqtype: 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, buf: readbuf, |
298 | U1_FEATURE_REPORT_LEN, |
299 | rtype: HID_FEATURE_REPORT, reqtype: HID_REQ_GET_REPORT); |
300 | |
301 | if (ret < 0) { |
302 | dev_err(&hdev->dev, "failed read register (%d)\n" , ret); |
303 | kfree(objp: readbuf); |
304 | goto exit; |
305 | } |
306 | |
307 | *read_val = readbuf[6]; |
308 | |
309 | kfree(objp: readbuf); |
310 | } |
311 | |
312 | ret = 0; |
313 | |
314 | exit: |
315 | kfree(objp: 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(dev: hdata->input, slot: i); |
339 | |
340 | input_mt_report_slot_state(dev: hdata->input, |
341 | MT_TOOL_FINGER, active: z != 0); |
342 | |
343 | if (!z) |
344 | continue; |
345 | |
346 | input_report_abs(dev: hdata->input, ABS_MT_POSITION_X, value: x); |
347 | input_report_abs(dev: hdata->input, ABS_MT_POSITION_Y, value: y); |
348 | input_report_abs(dev: hdata->input, ABS_MT_PRESSURE, value: z); |
349 | } |
350 | input_mt_sync_frame(dev: hdata->input); |
351 | |
352 | input_report_key(dev: hdata->input, BTN_LEFT, value: p_report->button); |
353 | |
354 | input_sync(dev: 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(p: contact + 3); |
377 | y = get_unaligned_le16(p: contact + 5); |
378 | z = contact[7] & 0x7F; |
379 | |
380 | input_mt_slot(dev: hdata->input, slot: i); |
381 | |
382 | if (z != 0) { |
383 | input_mt_report_slot_state(dev: hdata->input, |
384 | MT_TOOL_FINGER, active: 1); |
385 | input_report_abs(dev: hdata->input, |
386 | ABS_MT_POSITION_X, value: x); |
387 | input_report_abs(dev: hdata->input, |
388 | ABS_MT_POSITION_Y, value: y); |
389 | input_report_abs(dev: hdata->input, |
390 | ABS_MT_PRESSURE, value: z); |
391 | } else { |
392 | input_mt_report_slot_inactive(dev: hdata->input); |
393 | } |
394 | } |
395 | |
396 | input_mt_sync_frame(dev: hdata->input); |
397 | |
398 | input_report_key(dev: hdata->input, BTN_LEFT, |
399 | value: data[1] & 0x1); |
400 | input_report_key(dev: hdata->input, BTN_RIGHT, |
401 | value: (data[1] & 0x2)); |
402 | input_report_key(dev: hdata->input, BTN_MIDDLE, |
403 | value: (data[1] & 0x4)); |
404 | |
405 | input_sync(dev: hdata->input); |
406 | |
407 | return 1; |
408 | |
409 | case U1_SP_ABSOLUTE_REPORT_ID: |
410 | sp_x = get_unaligned_le16(p: data+2); |
411 | sp_y = get_unaligned_le16(p: data+4); |
412 | |
413 | sp_x = sp_x / 8; |
414 | sp_y = sp_y / 8; |
415 | |
416 | input_report_rel(dev: hdata->input2, REL_X, value: sp_x); |
417 | input_report_rel(dev: hdata->input2, REL_Y, value: sp_y); |
418 | |
419 | input_report_key(dev: hdata->input2, BTN_LEFT, |
420 | value: data[1] & 0x1); |
421 | input_report_key(dev: hdata->input2, BTN_RIGHT, |
422 | value: (data[1] & 0x2)); |
423 | input_report_key(dev: hdata->input2, BTN_MIDDLE, |
424 | value: (data[1] & 0x4)); |
425 | |
426 | input_sync(dev: 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, read_flag: 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, read_flag: 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, read_flag: 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 | read_val: &dev_ctrl, write_val: 0, read_flag: 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, write_val: dev_ctrl, read_flag: 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 | read_val: &sen_line_num_x, write_val: 0, read_flag: 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 | read_val: &sen_line_num_y, write_val: 0, read_flag: 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 | read_val: &pitch_x, write_val: 0, read_flag: 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 | read_val: &pitch_y, write_val: 0, read_flag: 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 | read_val: &resolution, write_val: 0, read_flag: 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 | read_val: &tmp, write_val: 0, read_flag: 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 | read_val: &tmp, write_val: 0, read_flag: 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, write_val: dev_ctrl, read_flag: 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 | read_val: &pri_data->sp_btn_info, write_val: 0, read_flag: 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, read_val: &tmp, write_val: 0, read_flag: 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, read_val: &tmp, write_val: 0, read_flag: 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, write_val: tmp, read_flag: 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, read_flag: 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, read_flag: 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(hdev: 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(hdev: 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(hid: hdev); |
690 | switch (data->dev_type) { |
691 | case T4: |
692 | ret = T4_init(hdev, pri_data: data); |
693 | break; |
694 | case U1: |
695 | ret = u1_init(hdev, pri_data: 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(dev: input, ABS_MT_POSITION_X, |
706 | min: data->x_min, max: data->x_max, fuzz: 0, flat: 0); |
707 | input_set_abs_params(dev: input, ABS_MT_POSITION_Y, |
708 | min: data->y_min, max: data->y_max, fuzz: 0, flat: 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(dev: input, ABS_MT_POSITION_X, val: res_x); |
715 | input_abs_set_res(dev: input, ABS_MT_POSITION_Y, val: res_y); |
716 | } |
717 | |
718 | input_set_abs_params(dev: input, ABS_MT_PRESSURE, min: 0, max: 64, fuzz: 0, flat: 0); |
719 | |
720 | input_mt_init_slots(dev: input, num_slots: 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(dev: input2, data: 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(dev: input2); |
764 | ret = -ENOENT; |
765 | goto exit; |
766 | } |
767 | } |
768 | |
769 | exit: |
770 | hid_device_io_stop(hid: 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(dev: &hdev->dev, size: 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 const struct hid_device_id alps_id[] = { |
824 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, |
825 | USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) }, |
826 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, |
827 | USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) }, |
828 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, |
829 | USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY) }, |
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 | .raw_event = alps_raw_event, |
841 | .input_mapping = alps_input_mapping, |
842 | .input_configured = alps_input_configured, |
843 | #ifdef CONFIG_PM |
844 | .resume = alps_post_resume, |
845 | .reset_resume = alps_post_reset, |
846 | #endif |
847 | }; |
848 | |
849 | module_hid_driver(alps_driver); |
850 | |
851 | MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>" ); |
852 | MODULE_DESCRIPTION("ALPS HID driver" ); |
853 | MODULE_LICENSE("GPL" ); |
854 | |