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2562756d MO |
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 MAX_TOUCHES 5 | |
56 | ||
57 | /** | |
58 | * struct u1_data | |
59 | * | |
60 | * @input: pointer to the kernel input device | |
61 | * @input2: pointer to the kernel input2 device | |
62 | * @hdev: pointer to the struct hid_device | |
63 | * | |
64 | * @dev_ctrl: device control parameter | |
65 | * @dev_type: device type | |
66 | * @sen_line_num_x: number of sensor line of X | |
67 | * @sen_line_num_y: number of sensor line of Y | |
68 | * @pitch_x: sensor pitch of X | |
69 | * @pitch_y: sensor pitch of Y | |
70 | * @resolution: resolution | |
71 | * @btn_info: button information | |
72 | * @x_active_len_mm: active area length of X (mm) | |
73 | * @y_active_len_mm: active area length of Y (mm) | |
74 | * @x_max: maximum x coordinate value | |
75 | * @y_max: maximum y coordinate value | |
76 | * @btn_cnt: number of buttons | |
77 | * @sp_btn_cnt: number of stick buttons | |
78 | */ | |
79 | struct u1_dev { | |
80 | struct input_dev *input; | |
81 | struct input_dev *input2; | |
82 | struct hid_device *hdev; | |
83 | ||
84 | u8 dev_ctrl; | |
85 | u8 dev_type; | |
86 | u8 sen_line_num_x; | |
87 | u8 sen_line_num_y; | |
88 | u8 pitch_x; | |
89 | u8 pitch_y; | |
90 | u8 resolution; | |
91 | u8 btn_info; | |
92 | u8 sp_btn_info; | |
93 | u32 x_active_len_mm; | |
94 | u32 y_active_len_mm; | |
95 | u32 x_max; | |
96 | u32 y_max; | |
97 | u32 btn_cnt; | |
98 | u32 sp_btn_cnt; | |
99 | }; | |
100 | ||
41f61ecc | 101 | static struct u1_dev *priv; |
2562756d MO |
102 | |
103 | static int u1_read_write_register(struct hid_device *hdev, u32 address, | |
104 | u8 *read_val, u8 write_val, bool read_flag) | |
105 | { | |
106 | int ret, i; | |
107 | u8 check_sum; | |
108 | u8 *input; | |
109 | u8 *readbuf; | |
110 | ||
111 | input = kzalloc(sizeof(u8)*U1_FEATURE_REPORT_LEN, GFP_KERNEL); | |
112 | if (!input) | |
113 | return -ENOMEM; | |
114 | ||
115 | readbuf = kzalloc(sizeof(u8)*U1_FEATURE_REPORT_LEN, GFP_KERNEL); | |
116 | if (!readbuf) { | |
117 | kfree(input); | |
118 | return -ENOMEM; | |
119 | } | |
120 | ||
121 | input[0] = U1_FEATURE_REPORT_ID; | |
122 | if (read_flag) { | |
123 | input[1] = U1_CMD_REGISTER_READ; | |
124 | input[6] = 0x00; | |
125 | } else { | |
126 | input[1] = U1_CMD_REGISTER_WRITE; | |
127 | input[6] = write_val; | |
128 | } | |
129 | ||
130 | put_unaligned_le32(address, input + 2); | |
131 | ||
132 | /* Calculate the checksum */ | |
133 | check_sum = U1_FEATURE_REPORT_LEN_ALL; | |
134 | for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++) | |
135 | check_sum += input[i]; | |
136 | ||
137 | input[7] = check_sum; | |
138 | ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input, | |
139 | sizeof(input), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
140 | ||
141 | if (ret < 0) { | |
142 | dev_err(&hdev->dev, "failed to read command (%d)\n", ret); | |
143 | goto exit; | |
144 | } | |
145 | ||
146 | if (read_flag) { | |
147 | ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf, | |
148 | sizeof(readbuf), HID_FEATURE_REPORT, | |
149 | HID_REQ_GET_REPORT); | |
150 | ||
151 | if (ret < 0) { | |
152 | dev_err(&hdev->dev, "failed read register (%d)\n", ret); | |
153 | goto exit; | |
154 | } | |
155 | ||
156 | *read_val = readbuf[6]; | |
157 | } | |
158 | ||
159 | kfree(input); | |
160 | kfree(readbuf); | |
161 | return 0; | |
162 | ||
163 | exit: | |
164 | kfree(input); | |
165 | kfree(readbuf); | |
166 | return ret; | |
167 | } | |
168 | ||
169 | static int alps_raw_event(struct hid_device *hdev, | |
170 | struct hid_report *report, u8 *data, int size) | |
171 | { | |
172 | int x[MAX_TOUCHES], y[MAX_TOUCHES], z[MAX_TOUCHES]; | |
173 | int i, left, right, middle; | |
174 | short sp_x, sp_y, sp_z; | |
175 | struct u1_dev *hdata = hid_get_drvdata(hdev); | |
176 | ||
177 | switch (data[0]) { | |
178 | case U1_MOUSE_REPORT_ID: | |
179 | break; | |
180 | case U1_FEATURE_REPORT_ID: | |
181 | break; | |
182 | case U1_ABSOLUTE_REPORT_ID: | |
183 | for (i = 0; i < MAX_TOUCHES; i++) { | |
184 | x[i] = (data[3+(5*i)] | (data[4+(5*i)] << 8)); | |
185 | y[i] = (data[5+(5*i)] | (data[6+(5*i)] << 8)); | |
186 | z[i] = data[7+(5*i)] & 0x7F; | |
187 | left = data[1] & 0x1; | |
188 | right = (data[1] & 0x2) >> 1; | |
189 | middle = (data[1] & 0x4) >> 2; | |
190 | ||
191 | input_mt_slot(hdata->input, i); | |
192 | ||
193 | if (z[i] != 0) { | |
194 | input_mt_report_slot_state(hdata->input, | |
195 | MT_TOOL_FINGER, 1); | |
196 | } else { | |
197 | input_mt_report_slot_state(hdata->input, | |
198 | MT_TOOL_FINGER, 0); | |
199 | break; | |
200 | } | |
201 | ||
202 | input_event(hdata->input, EV_ABS, | |
203 | ABS_MT_POSITION_X, x[i]); | |
204 | input_event(hdata->input, EV_ABS, | |
205 | ABS_MT_POSITION_Y, y[i]); | |
206 | input_event(hdata->input, EV_ABS, | |
207 | ABS_MT_PRESSURE, z[i]); | |
208 | } | |
209 | ||
210 | input_mt_sync_frame(hdata->input); | |
211 | input_sync(hdata->input); | |
212 | ||
213 | input_event(hdata->input, EV_KEY, BTN_LEFT, left); | |
214 | input_event(hdata->input, EV_KEY, BTN_RIGHT, right); | |
215 | input_event(hdata->input, EV_KEY, BTN_MIDDLE, middle); | |
216 | ||
217 | return 1; | |
218 | ||
219 | case U1_SP_ABSOLUTE_REPORT_ID: | |
220 | sp_x = (data[2] | (data[3] << 8)); | |
221 | sp_y = (data[4] | (data[5] << 8)); | |
222 | sp_z = (data[6] | data[7]) & 0x7FFF; | |
223 | left = data[1] & 0x1; | |
224 | right = (data[1] & 0x2) >> 1; | |
225 | middle = (data[1] & 0x4) >> 2; | |
226 | ||
227 | sp_x = sp_x / 8; | |
228 | sp_y = sp_y / 8; | |
229 | ||
230 | input_event(priv->input2, EV_REL, REL_X, sp_x); | |
231 | input_event(priv->input2, EV_REL, REL_Y, sp_y); | |
232 | ||
233 | input_event(priv->input2, EV_KEY, BTN_LEFT, left); | |
234 | input_event(priv->input2, EV_KEY, BTN_RIGHT, right); | |
235 | input_event(priv->input2, EV_KEY, BTN_MIDDLE, middle); | |
236 | ||
237 | input_sync(priv->input2); | |
238 | ||
239 | return 1; | |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | #ifdef CONFIG_PM | |
246 | static int alps_post_reset(struct hid_device *hdev) | |
247 | { | |
248 | return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
249 | NULL, U1_TP_ABS_MODE, false); | |
250 | } | |
251 | ||
252 | static int alps_post_resume(struct hid_device *hdev) | |
253 | { | |
254 | return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
255 | NULL, U1_TP_ABS_MODE, false); | |
256 | } | |
257 | #endif /* CONFIG_PM */ | |
258 | ||
259 | static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi) | |
260 | { | |
261 | struct u1_dev *data = hid_get_drvdata(hdev); | |
262 | struct input_dev *input = hi->input, *input2; | |
263 | struct u1_dev devInfo; | |
264 | int ret; | |
265 | int res_x, res_y, i; | |
266 | ||
267 | /* Check device product ID */ | |
268 | switch (hdev->product) { | |
269 | case HID_PRODUCT_ID_U1: | |
270 | case HID_PRODUCT_ID_U1_DUAL: | |
271 | break; | |
272 | default: | |
273 | return 0; | |
274 | } | |
275 | ||
276 | data->input = input; | |
277 | ||
278 | hid_dbg(hdev, "Opening low level driver\n"); | |
279 | ret = hid_hw_open(hdev); | |
280 | if (ret) | |
281 | return ret; | |
282 | ||
283 | /* Allow incoming hid reports */ | |
284 | hid_device_io_start(hdev); | |
285 | ||
286 | /* Device initialization */ | |
287 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
288 | &devInfo.dev_ctrl, 0, true); | |
289 | if (ret < 0) { | |
290 | dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret); | |
291 | goto exit; | |
292 | } | |
293 | ||
294 | devInfo.dev_ctrl &= ~U1_DISABLE_DEV; | |
295 | devInfo.dev_ctrl |= U1_TP_ABS_MODE; | |
296 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
297 | NULL, devInfo.dev_ctrl, false); | |
298 | if (ret < 0) { | |
299 | dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); | |
300 | goto exit; | |
301 | } | |
302 | ||
303 | ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X, | |
304 | &devInfo.sen_line_num_x, 0, true); | |
305 | if (ret < 0) { | |
306 | dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret); | |
307 | goto exit; | |
308 | } | |
309 | ||
310 | ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y, | |
311 | &devInfo.sen_line_num_y, 0, true); | |
312 | if (ret < 0) { | |
313 | dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret); | |
314 | goto exit; | |
315 | } | |
316 | ||
317 | ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X, | |
318 | &devInfo.pitch_x, 0, true); | |
319 | if (ret < 0) { | |
320 | dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret); | |
321 | goto exit; | |
322 | } | |
323 | ||
324 | ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y, | |
325 | &devInfo.pitch_y, 0, true); | |
326 | if (ret < 0) { | |
327 | dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret); | |
328 | goto exit; | |
329 | } | |
330 | ||
331 | ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS, | |
332 | &devInfo.resolution, 0, true); | |
333 | if (ret < 0) { | |
334 | dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret); | |
335 | goto exit; | |
336 | } | |
337 | ||
338 | ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN, | |
339 | &devInfo.btn_info, 0, true); | |
340 | if (ret < 0) { | |
341 | dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret); | |
342 | goto exit; | |
343 | } | |
344 | ||
345 | /* Check StickPointer device */ | |
346 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP, | |
347 | &devInfo.dev_type, 0, true); | |
348 | if (ret < 0) { | |
349 | dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret); | |
350 | goto exit; | |
351 | } | |
352 | ||
353 | devInfo.x_active_len_mm = | |
354 | (devInfo.pitch_x * (devInfo.sen_line_num_x - 1)) / 10; | |
355 | devInfo.y_active_len_mm = | |
356 | (devInfo.pitch_y * (devInfo.sen_line_num_y - 1)) / 10; | |
357 | ||
358 | devInfo.x_max = | |
359 | (devInfo.resolution << 2) * (devInfo.sen_line_num_x - 1); | |
360 | devInfo.y_max = | |
361 | (devInfo.resolution << 2) * (devInfo.sen_line_num_y - 1); | |
362 | ||
363 | __set_bit(EV_ABS, input->evbit); | |
364 | input_set_abs_params(input, ABS_MT_POSITION_X, 1, devInfo.x_max, 0, 0); | |
365 | input_set_abs_params(input, ABS_MT_POSITION_Y, 1, devInfo.y_max, 0, 0); | |
366 | ||
367 | if (devInfo.x_active_len_mm && devInfo.y_active_len_mm) { | |
368 | res_x = (devInfo.x_max - 1) / devInfo.x_active_len_mm; | |
369 | res_y = (devInfo.y_max - 1) / devInfo.y_active_len_mm; | |
370 | ||
371 | input_abs_set_res(input, ABS_MT_POSITION_X, res_x); | |
372 | input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); | |
373 | } | |
374 | ||
375 | input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0); | |
376 | ||
377 | input_mt_init_slots(input, MAX_TOUCHES, INPUT_MT_POINTER); | |
378 | ||
379 | __set_bit(EV_KEY, input->evbit); | |
380 | if ((devInfo.btn_info & 0x0F) == (devInfo.btn_info & 0xF0) >> 4) { | |
381 | devInfo.btn_cnt = (devInfo.btn_info & 0x0F); | |
382 | } else { | |
383 | /* Button pad */ | |
384 | devInfo.btn_cnt = 1; | |
385 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
386 | } | |
387 | ||
388 | for (i = 0; i < devInfo.btn_cnt; i++) | |
389 | __set_bit(BTN_LEFT + i, input->keybit); | |
390 | ||
391 | ||
392 | /* Stick device initialization */ | |
393 | if (devInfo.dev_type & U1_DEVTYPE_SP_SUPPORT) { | |
394 | ||
395 | priv = kzalloc(sizeof(struct u1_dev), GFP_KERNEL); | |
396 | if (!priv) { | |
397 | hid_device_io_stop(hdev); | |
398 | hid_hw_close(hdev); | |
399 | return -ENOMEM; | |
400 | } | |
401 | ||
402 | input2 = input_allocate_device(); | |
403 | if (!input2) { | |
404 | input_free_device(input2); | |
405 | goto exit; | |
406 | } | |
407 | ||
408 | priv->input2 = input2; | |
409 | ||
410 | devInfo.dev_ctrl |= U1_SP_ABS_MODE; | |
411 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
412 | NULL, devInfo.dev_ctrl, false); | |
413 | if (ret < 0) { | |
414 | dev_err(&hdev->dev, "failed SP mode (%d)\n", ret); | |
415 | input_free_device(input2); | |
416 | goto exit; | |
417 | } | |
418 | ||
419 | ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN, | |
420 | &devInfo.sp_btn_info, 0, true); | |
421 | if (ret < 0) { | |
422 | dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret); | |
423 | input_free_device(input2); | |
424 | goto exit; | |
425 | } | |
426 | ||
427 | input2->phys = input->phys; | |
428 | input2->name = "DualPoint Stick"; | |
429 | input2->id.bustype = BUS_I2C; | |
430 | input2->id.vendor = input->id.vendor; | |
431 | input2->id.product = input->id.product; | |
432 | input2->id.version = input->id.version; | |
433 | input2->dev.parent = input->dev.parent; | |
434 | ||
435 | __set_bit(EV_KEY, input2->evbit); | |
436 | devInfo.sp_btn_cnt = (devInfo.sp_btn_info & 0x0F); | |
437 | for (i = 0; i < devInfo.sp_btn_cnt; i++) | |
438 | __set_bit(BTN_LEFT + i, input2->keybit); | |
439 | ||
440 | __set_bit(EV_REL, input2->evbit); | |
441 | __set_bit(REL_X, input2->relbit); | |
442 | __set_bit(REL_Y, input2->relbit); | |
443 | __set_bit(INPUT_PROP_POINTER, input2->propbit); | |
444 | __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit); | |
445 | ||
446 | if (input_register_device(priv->input2)) { | |
447 | input_free_device(input2); | |
448 | goto exit; | |
449 | } | |
450 | } | |
451 | ||
452 | exit: | |
453 | hid_device_io_stop(hdev); | |
454 | hid_hw_close(hdev); | |
455 | return ret; | |
456 | } | |
457 | ||
458 | static int alps_input_mapping(struct hid_device *hdev, | |
459 | struct hid_input *hi, struct hid_field *field, | |
460 | struct hid_usage *usage, unsigned long **bit, int *max) | |
461 | { | |
462 | return -1; | |
463 | } | |
464 | ||
465 | static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
466 | { | |
467 | struct u1_dev *data = NULL; | |
468 | int ret; | |
469 | ||
470 | data = devm_kzalloc(&hdev->dev, sizeof(struct u1_dev), GFP_KERNEL); | |
471 | if (!data) | |
472 | return -ENOMEM; | |
473 | ||
474 | data->hdev = hdev; | |
475 | hid_set_drvdata(hdev, data); | |
476 | ||
477 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; | |
478 | ||
479 | ret = hid_parse(hdev); | |
480 | if (ret) { | |
481 | hid_err(hdev, "parse failed\n"); | |
482 | return ret; | |
483 | } | |
484 | ||
485 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
486 | if (ret) { | |
487 | hid_err(hdev, "hw start failed\n"); | |
488 | return ret; | |
489 | } | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
494 | static void alps_remove(struct hid_device *hdev) | |
495 | { | |
496 | hid_hw_stop(hdev); | |
497 | kfree(priv); | |
498 | } | |
499 | ||
500 | static const struct hid_device_id alps_id[] = { | |
501 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, | |
502 | USB_VENDOR_ID_ALPS_JP, HID_ANY_ID) }, | |
503 | { } | |
504 | }; | |
505 | MODULE_DEVICE_TABLE(hid, alps_id); | |
506 | ||
507 | static struct hid_driver alps_driver = { | |
508 | .name = "hid-alps", | |
509 | .id_table = alps_id, | |
510 | .probe = alps_probe, | |
511 | .remove = alps_remove, | |
512 | .raw_event = alps_raw_event, | |
513 | .input_mapping = alps_input_mapping, | |
514 | .input_configured = alps_input_configured, | |
515 | #ifdef CONFIG_PM | |
516 | .resume = alps_post_resume, | |
517 | .reset_resume = alps_post_reset, | |
518 | #endif | |
519 | }; | |
520 | ||
521 | module_hid_driver(alps_driver); | |
522 | ||
523 | MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>"); | |
524 | MODULE_DESCRIPTION("ALPS HID driver"); | |
525 | MODULE_LICENSE("GPL"); |