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hwmon: (core) Add power attribute support to new API
[linux/fpc-iii.git] / drivers / hid / hid-alps.c
blob048befde295a2f79e8c847b87f7aebd0b93d7c0c
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
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
109 input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
110 if (!input)
111 return -ENOMEM;
112
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,
131 U1_FEATURE_REPORT_LEN,
132 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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) {
140 readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
141 if (!readbuf) {
142 kfree(input);
143 return -ENOMEM;
144 }
145
146 ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
147 U1_FEATURE_REPORT_LEN,
148 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
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];
156
157 kfree(readbuf);
158 }
159
160 ret = 0;
161
162 exit:
163 kfree(input);
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 {
170 unsigned int x, y, z;
171 int i;
172 short sp_x, sp_y;
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++) {
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;
187
188 input_mt_slot(hdata->input, i);
189
190 if (z != 0) {
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
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
203 }
204
205 input_mt_sync_frame(hdata->input);
206
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);
215
216 return 1;
217
218 case U1_SP_ABSOLUTE_REPORT_ID:
219 sp_x = get_unaligned_le16(data+2);
220 sp_y = get_unaligned_le16(data+4);
221
222 sp_x = sp_x / 8;
223 sp_y = sp_y / 8;
224
225 input_report_rel(hdata->input2, REL_X, sp_x);
226 input_report_rel(hdata->input2, REL_Y, sp_y);
227
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));
234
235 input_sync(hdata->input2);
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
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
384 input2 = input_allocate_device();
385 if (!input2) {
386 input_free_device(input2);
387 goto exit;
388 }
389
390 data->input2 = input2;
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
428 if (input_register_device(data->input2)) {
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);
479 }
480
481 static const struct hid_device_id alps_id[] = {
482 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
483 USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
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");
Linux with added FPC-III support