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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 | ||
2562756d MO |
101 | static int u1_read_write_register(struct hid_device *hdev, u32 address, |
102 | u8 *read_val, u8 write_val, bool read_flag) | |
103 | { | |
104 | int ret, i; | |
105 | u8 check_sum; | |
106 | u8 *input; | |
107 | u8 *readbuf; | |
108 | ||
819d64e5 | 109 | input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); |
2562756d MO |
110 | if (!input) |
111 | return -ENOMEM; | |
112 | ||
2562756d MO |
113 | input[0] = U1_FEATURE_REPORT_ID; |
114 | if (read_flag) { | |
115 | input[1] = U1_CMD_REGISTER_READ; | |
116 | input[6] = 0x00; | |
117 | } else { | |
118 | input[1] = U1_CMD_REGISTER_WRITE; | |
119 | input[6] = write_val; | |
120 | } | |
121 | ||
122 | put_unaligned_le32(address, input + 2); | |
123 | ||
124 | /* Calculate the checksum */ | |
125 | check_sum = U1_FEATURE_REPORT_LEN_ALL; | |
126 | for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++) | |
127 | check_sum += input[i]; | |
128 | ||
129 | input[7] = check_sum; | |
130 | ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input, | |
819d64e5 MO |
131 | U1_FEATURE_REPORT_LEN, |
132 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
2562756d MO |
133 | |
134 | if (ret < 0) { | |
135 | dev_err(&hdev->dev, "failed to read command (%d)\n", ret); | |
136 | goto exit; | |
137 | } | |
138 | ||
139 | if (read_flag) { | |
819d64e5 MO |
140 | readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL); |
141 | if (!readbuf) { | |
142 | kfree(input); | |
143 | return -ENOMEM; | |
144 | } | |
145 | ||
2562756d | 146 | ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf, |
819d64e5 | 147 | U1_FEATURE_REPORT_LEN, |
63b3a7d0 | 148 | HID_FEATURE_REPORT, HID_REQ_GET_REPORT); |
2562756d MO |
149 | |
150 | if (ret < 0) { | |
151 | dev_err(&hdev->dev, "failed read register (%d)\n", ret); | |
152 | goto exit; | |
153 | } | |
154 | ||
155 | *read_val = readbuf[6]; | |
819d64e5 MO |
156 | |
157 | kfree(readbuf); | |
2562756d MO |
158 | } |
159 | ||
819d64e5 | 160 | ret = 0; |
2562756d MO |
161 | |
162 | exit: | |
163 | kfree(input); | |
2562756d MO |
164 | return ret; |
165 | } | |
166 | ||
167 | static int alps_raw_event(struct hid_device *hdev, | |
168 | struct hid_report *report, u8 *data, int size) | |
169 | { | |
819d64e5 MO |
170 | unsigned int x, y, z; |
171 | int i; | |
172 | short sp_x, sp_y; | |
2562756d MO |
173 | struct u1_dev *hdata = hid_get_drvdata(hdev); |
174 | ||
175 | switch (data[0]) { | |
176 | case U1_MOUSE_REPORT_ID: | |
177 | break; | |
178 | case U1_FEATURE_REPORT_ID: | |
179 | break; | |
180 | case U1_ABSOLUTE_REPORT_ID: | |
181 | for (i = 0; i < MAX_TOUCHES; i++) { | |
819d64e5 MO |
182 | u8 *contact = &data[i * 5]; |
183 | ||
184 | x = get_unaligned_le16(contact + 3); | |
185 | y = get_unaligned_le16(contact + 5); | |
186 | z = contact[7] & 0x7F; | |
2562756d MO |
187 | |
188 | input_mt_slot(hdata->input, i); | |
189 | ||
819d64e5 | 190 | if (z != 0) { |
2562756d MO |
191 | input_mt_report_slot_state(hdata->input, |
192 | MT_TOOL_FINGER, 1); | |
193 | } else { | |
194 | input_mt_report_slot_state(hdata->input, | |
195 | MT_TOOL_FINGER, 0); | |
196 | break; | |
197 | } | |
198 | ||
819d64e5 MO |
199 | input_report_abs(hdata->input, ABS_MT_POSITION_X, x); |
200 | input_report_abs(hdata->input, ABS_MT_POSITION_Y, y); | |
201 | input_report_abs(hdata->input, ABS_MT_PRESSURE, z); | |
202 | ||
2562756d MO |
203 | } |
204 | ||
205 | input_mt_sync_frame(hdata->input); | |
2562756d | 206 | |
819d64e5 MO |
207 | input_report_key(hdata->input, BTN_LEFT, |
208 | data[1] & 0x1); | |
209 | input_report_key(hdata->input, BTN_RIGHT, | |
210 | (data[1] & 0x2)); | |
211 | input_report_key(hdata->input, BTN_MIDDLE, | |
212 | (data[1] & 0x4)); | |
213 | ||
214 | input_sync(hdata->input); | |
2562756d MO |
215 | |
216 | return 1; | |
217 | ||
218 | case U1_SP_ABSOLUTE_REPORT_ID: | |
819d64e5 MO |
219 | sp_x = get_unaligned_le16(data+2); |
220 | sp_y = get_unaligned_le16(data+4); | |
2562756d MO |
221 | |
222 | sp_x = sp_x / 8; | |
223 | sp_y = sp_y / 8; | |
224 | ||
819d64e5 MO |
225 | input_report_rel(hdata->input2, REL_X, sp_x); |
226 | input_report_rel(hdata->input2, REL_Y, sp_y); | |
2562756d | 227 | |
819d64e5 MO |
228 | input_report_key(hdata->input2, BTN_LEFT, |
229 | data[1] & 0x1); | |
230 | input_report_key(hdata->input2, BTN_RIGHT, | |
231 | (data[1] & 0x2)); | |
232 | input_report_key(hdata->input2, BTN_MIDDLE, | |
233 | (data[1] & 0x4)); | |
2562756d | 234 | |
819d64e5 | 235 | input_sync(hdata->input2); |
2562756d MO |
236 | |
237 | return 1; | |
238 | } | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | #ifdef CONFIG_PM | |
244 | static int alps_post_reset(struct hid_device *hdev) | |
245 | { | |
246 | return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
247 | NULL, U1_TP_ABS_MODE, false); | |
248 | } | |
249 | ||
250 | static int alps_post_resume(struct hid_device *hdev) | |
251 | { | |
252 | return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
253 | NULL, U1_TP_ABS_MODE, false); | |
254 | } | |
255 | #endif /* CONFIG_PM */ | |
256 | ||
257 | static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi) | |
258 | { | |
259 | struct u1_dev *data = hid_get_drvdata(hdev); | |
260 | struct input_dev *input = hi->input, *input2; | |
261 | struct u1_dev devInfo; | |
262 | int ret; | |
263 | int res_x, res_y, i; | |
264 | ||
2562756d MO |
265 | data->input = input; |
266 | ||
267 | hid_dbg(hdev, "Opening low level driver\n"); | |
268 | ret = hid_hw_open(hdev); | |
269 | if (ret) | |
270 | return ret; | |
271 | ||
272 | /* Allow incoming hid reports */ | |
273 | hid_device_io_start(hdev); | |
274 | ||
275 | /* Device initialization */ | |
276 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
277 | &devInfo.dev_ctrl, 0, true); | |
278 | if (ret < 0) { | |
279 | dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret); | |
280 | goto exit; | |
281 | } | |
282 | ||
283 | devInfo.dev_ctrl &= ~U1_DISABLE_DEV; | |
284 | devInfo.dev_ctrl |= U1_TP_ABS_MODE; | |
285 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
286 | NULL, devInfo.dev_ctrl, false); | |
287 | if (ret < 0) { | |
288 | dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret); | |
289 | goto exit; | |
290 | } | |
291 | ||
292 | ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X, | |
293 | &devInfo.sen_line_num_x, 0, true); | |
294 | if (ret < 0) { | |
295 | dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret); | |
296 | goto exit; | |
297 | } | |
298 | ||
299 | ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y, | |
300 | &devInfo.sen_line_num_y, 0, true); | |
301 | if (ret < 0) { | |
302 | dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret); | |
303 | goto exit; | |
304 | } | |
305 | ||
306 | ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X, | |
307 | &devInfo.pitch_x, 0, true); | |
308 | if (ret < 0) { | |
309 | dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret); | |
310 | goto exit; | |
311 | } | |
312 | ||
313 | ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y, | |
314 | &devInfo.pitch_y, 0, true); | |
315 | if (ret < 0) { | |
316 | dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret); | |
317 | goto exit; | |
318 | } | |
319 | ||
320 | ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS, | |
321 | &devInfo.resolution, 0, true); | |
322 | if (ret < 0) { | |
323 | dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret); | |
324 | goto exit; | |
325 | } | |
326 | ||
327 | ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN, | |
328 | &devInfo.btn_info, 0, true); | |
329 | if (ret < 0) { | |
330 | dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret); | |
331 | goto exit; | |
332 | } | |
333 | ||
334 | /* Check StickPointer device */ | |
335 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP, | |
336 | &devInfo.dev_type, 0, true); | |
337 | if (ret < 0) { | |
338 | dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret); | |
339 | goto exit; | |
340 | } | |
341 | ||
342 | devInfo.x_active_len_mm = | |
343 | (devInfo.pitch_x * (devInfo.sen_line_num_x - 1)) / 10; | |
344 | devInfo.y_active_len_mm = | |
345 | (devInfo.pitch_y * (devInfo.sen_line_num_y - 1)) / 10; | |
346 | ||
347 | devInfo.x_max = | |
348 | (devInfo.resolution << 2) * (devInfo.sen_line_num_x - 1); | |
349 | devInfo.y_max = | |
350 | (devInfo.resolution << 2) * (devInfo.sen_line_num_y - 1); | |
351 | ||
352 | __set_bit(EV_ABS, input->evbit); | |
353 | input_set_abs_params(input, ABS_MT_POSITION_X, 1, devInfo.x_max, 0, 0); | |
354 | input_set_abs_params(input, ABS_MT_POSITION_Y, 1, devInfo.y_max, 0, 0); | |
355 | ||
356 | if (devInfo.x_active_len_mm && devInfo.y_active_len_mm) { | |
357 | res_x = (devInfo.x_max - 1) / devInfo.x_active_len_mm; | |
358 | res_y = (devInfo.y_max - 1) / devInfo.y_active_len_mm; | |
359 | ||
360 | input_abs_set_res(input, ABS_MT_POSITION_X, res_x); | |
361 | input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); | |
362 | } | |
363 | ||
364 | input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0); | |
365 | ||
366 | input_mt_init_slots(input, MAX_TOUCHES, INPUT_MT_POINTER); | |
367 | ||
368 | __set_bit(EV_KEY, input->evbit); | |
369 | if ((devInfo.btn_info & 0x0F) == (devInfo.btn_info & 0xF0) >> 4) { | |
370 | devInfo.btn_cnt = (devInfo.btn_info & 0x0F); | |
371 | } else { | |
372 | /* Button pad */ | |
373 | devInfo.btn_cnt = 1; | |
374 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
375 | } | |
376 | ||
377 | for (i = 0; i < devInfo.btn_cnt; i++) | |
378 | __set_bit(BTN_LEFT + i, input->keybit); | |
379 | ||
380 | ||
381 | /* Stick device initialization */ | |
382 | if (devInfo.dev_type & U1_DEVTYPE_SP_SUPPORT) { | |
383 | ||
2562756d MO |
384 | input2 = input_allocate_device(); |
385 | if (!input2) { | |
386 | input_free_device(input2); | |
387 | goto exit; | |
388 | } | |
389 | ||
819d64e5 | 390 | data->input2 = input2; |
2562756d MO |
391 | |
392 | devInfo.dev_ctrl |= U1_SP_ABS_MODE; | |
393 | ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1, | |
394 | NULL, devInfo.dev_ctrl, false); | |
395 | if (ret < 0) { | |
396 | dev_err(&hdev->dev, "failed SP mode (%d)\n", ret); | |
397 | input_free_device(input2); | |
398 | goto exit; | |
399 | } | |
400 | ||
401 | ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN, | |
402 | &devInfo.sp_btn_info, 0, true); | |
403 | if (ret < 0) { | |
404 | dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret); | |
405 | input_free_device(input2); | |
406 | goto exit; | |
407 | } | |
408 | ||
409 | input2->phys = input->phys; | |
410 | input2->name = "DualPoint Stick"; | |
411 | input2->id.bustype = BUS_I2C; | |
412 | input2->id.vendor = input->id.vendor; | |
413 | input2->id.product = input->id.product; | |
414 | input2->id.version = input->id.version; | |
415 | input2->dev.parent = input->dev.parent; | |
416 | ||
417 | __set_bit(EV_KEY, input2->evbit); | |
418 | devInfo.sp_btn_cnt = (devInfo.sp_btn_info & 0x0F); | |
419 | for (i = 0; i < devInfo.sp_btn_cnt; i++) | |
420 | __set_bit(BTN_LEFT + i, input2->keybit); | |
421 | ||
422 | __set_bit(EV_REL, input2->evbit); | |
423 | __set_bit(REL_X, input2->relbit); | |
424 | __set_bit(REL_Y, input2->relbit); | |
425 | __set_bit(INPUT_PROP_POINTER, input2->propbit); | |
426 | __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit); | |
427 | ||
819d64e5 | 428 | if (input_register_device(data->input2)) { |
2562756d MO |
429 | input_free_device(input2); |
430 | goto exit; | |
431 | } | |
432 | } | |
433 | ||
434 | exit: | |
435 | hid_device_io_stop(hdev); | |
436 | hid_hw_close(hdev); | |
437 | return ret; | |
438 | } | |
439 | ||
440 | static int alps_input_mapping(struct hid_device *hdev, | |
441 | struct hid_input *hi, struct hid_field *field, | |
442 | struct hid_usage *usage, unsigned long **bit, int *max) | |
443 | { | |
444 | return -1; | |
445 | } | |
446 | ||
447 | static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
448 | { | |
449 | struct u1_dev *data = NULL; | |
450 | int ret; | |
451 | ||
452 | data = devm_kzalloc(&hdev->dev, sizeof(struct u1_dev), GFP_KERNEL); | |
453 | if (!data) | |
454 | return -ENOMEM; | |
455 | ||
456 | data->hdev = hdev; | |
457 | hid_set_drvdata(hdev, data); | |
458 | ||
459 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; | |
460 | ||
461 | ret = hid_parse(hdev); | |
462 | if (ret) { | |
463 | hid_err(hdev, "parse failed\n"); | |
464 | return ret; | |
465 | } | |
466 | ||
467 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
468 | if (ret) { | |
469 | hid_err(hdev, "hw start failed\n"); | |
470 | return ret; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static void alps_remove(struct hid_device *hdev) | |
477 | { | |
478 | hid_hw_stop(hdev); | |
2562756d MO |
479 | } |
480 | ||
481 | static const struct hid_device_id alps_id[] = { | |
482 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, | |
819d64e5 | 483 | USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) }, |
2562756d MO |
484 | { } |
485 | }; | |
486 | MODULE_DEVICE_TABLE(hid, alps_id); | |
487 | ||
488 | static struct hid_driver alps_driver = { | |
489 | .name = "hid-alps", | |
490 | .id_table = alps_id, | |
491 | .probe = alps_probe, | |
492 | .remove = alps_remove, | |
493 | .raw_event = alps_raw_event, | |
494 | .input_mapping = alps_input_mapping, | |
495 | .input_configured = alps_input_configured, | |
496 | #ifdef CONFIG_PM | |
497 | .resume = alps_post_resume, | |
498 | .reset_resume = alps_post_reset, | |
499 | #endif | |
500 | }; | |
501 | ||
502 | module_hid_driver(alps_driver); | |
503 | ||
504 | MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>"); | |
505 | MODULE_DESCRIPTION("ALPS HID driver"); | |
506 | MODULE_LICENSE("GPL"); |