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arm: Add devicetree fixup machine function
[linux/fpc-iii.git] / drivers / hid / hid-sensor-hub.c
blobe244e449cbbadc05ffc40c62e27fa1065c5154ed
1 /*
2 * HID Sensors Driver
3 * Copyright (c) 2012, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 */
19 #include <linux/device.h>
20 #include <linux/hid.h>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/mfd/core.h>
24 #include <linux/list.h>
25 #include <linux/hid-sensor-ids.h>
26 #include <linux/hid-sensor-hub.h>
27 #include "hid-ids.h"
28
29 #define HID_SENSOR_HUB_ENUM_QUIRK 0x01
30
31 /**
32 * struct sensor_hub_pending - Synchronous read pending information
33 * @status: Pending status true/false.
34 * @ready: Completion synchronization data.
35 * @usage_id: Usage id for physical device, E.g. Gyro usage id.
36 * @attr_usage_id: Usage Id of a field, E.g. X-AXIS for a gyro.
37 * @raw_size: Response size for a read request.
38 * @raw_data: Place holder for received response.
39 */
40 struct sensor_hub_pending {
41 bool status;
42 struct completion ready;
43 u32 usage_id;
44 u32 attr_usage_id;
45 int raw_size;
46 u8 *raw_data;
47 };
48
49 /**
50 * struct sensor_hub_data - Hold a instance data for a HID hub device
51 * @hsdev: Stored hid instance for current hub device.
52 * @mutex: Mutex to serialize synchronous request.
53 * @lock: Spin lock to protect pending request structure.
54 * @pending: Holds information of pending sync read request.
55 * @dyn_callback_list: Holds callback function
56 * @dyn_callback_lock: spin lock to protect callback list
57 * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance.
58 * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached).
59 * @ref_cnt: Number of MFD clients have opened this device
60 */
61 struct sensor_hub_data {
62 struct mutex mutex;
63 spinlock_t lock;
64 struct sensor_hub_pending pending;
65 struct list_head dyn_callback_list;
66 spinlock_t dyn_callback_lock;
67 struct mfd_cell *hid_sensor_hub_client_devs;
68 int hid_sensor_client_cnt;
69 unsigned long quirks;
70 int ref_cnt;
71 };
72
73 /**
74 * struct hid_sensor_hub_callbacks_list - Stores callback list
75 * @list: list head.
76 * @usage_id: usage id for a physical device.
77 * @usage_callback: Stores registered callback functions.
78 * @priv: Private data for a physical device.
79 */
80 struct hid_sensor_hub_callbacks_list {
81 struct list_head list;
82 u32 usage_id;
83 struct hid_sensor_hub_device *hsdev;
84 struct hid_sensor_hub_callbacks *usage_callback;
85 void *priv;
86 };
87
88 static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev,
89 int dir)
90 {
91 struct hid_report *report;
92
93 list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) {
94 if (report->id == id)
95 return report;
96 }
97 hid_warn(hdev, "No report with id 0x%x found\n", id);
98
99 return NULL;
100 }
101
102 static int sensor_hub_get_physical_device_count(struct hid_device *hdev)
103 {
104 int i;
105 int count = 0;
106
107 for (i = 0; i < hdev->maxcollection; ++i) {
108 struct hid_collection *collection = &hdev->collection[i];
109 if (collection->type == HID_COLLECTION_PHYSICAL)
110 ++count;
111 }
112
113 return count;
114 }
115
116 static void sensor_hub_fill_attr_info(
117 struct hid_sensor_hub_attribute_info *info,
118 s32 index, s32 report_id, struct hid_field *field)
119 {
120 info->index = index;
121 info->report_id = report_id;
122 info->units = field->unit;
123 info->unit_expo = field->unit_exponent;
124 info->size = (field->report_size * field->report_count)/8;
125 info->logical_minimum = field->logical_minimum;
126 info->logical_maximum = field->logical_maximum;
127 }
128
129 static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
130 struct hid_device *hdev,
131 u32 usage_id,
132 int collection_index,
133 struct hid_sensor_hub_device **hsdev,
134 void **priv)
135 {
136 struct hid_sensor_hub_callbacks_list *callback;
137 struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
138
139 spin_lock(&pdata->dyn_callback_lock);
140 list_for_each_entry(callback, &pdata->dyn_callback_list, list)
141 if (callback->usage_id == usage_id &&
142 (collection_index >=
143 callback->hsdev->start_collection_index) &&
144 (collection_index <
145 callback->hsdev->end_collection_index)) {
146 *priv = callback->priv;
147 *hsdev = callback->hsdev;
148 spin_unlock(&pdata->dyn_callback_lock);
149 return callback->usage_callback;
150 }
151 spin_unlock(&pdata->dyn_callback_lock);
152
153 return NULL;
154 }
155
156 int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
157 u32 usage_id,
158 struct hid_sensor_hub_callbacks *usage_callback)
159 {
160 struct hid_sensor_hub_callbacks_list *callback;
161 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
162 unsigned long flags;
163
164 spin_lock_irqsave(&pdata->dyn_callback_lock, flags);
165 list_for_each_entry(callback, &pdata->dyn_callback_list, list)
166 if (callback->usage_id == usage_id &&
167 callback->hsdev == hsdev) {
168 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
169 return -EINVAL;
170 }
171 callback = kzalloc(sizeof(*callback), GFP_ATOMIC);
172 if (!callback) {
173 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
174 return -ENOMEM;
175 }
176 callback->hsdev = hsdev;
177 callback->usage_callback = usage_callback;
178 callback->usage_id = usage_id;
179 callback->priv = NULL;
180 list_add_tail(&callback->list, &pdata->dyn_callback_list);
181 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
182
183 return 0;
184 }
185 EXPORT_SYMBOL_GPL(sensor_hub_register_callback);
186
187 int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
188 u32 usage_id)
189 {
190 struct hid_sensor_hub_callbacks_list *callback;
191 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
192 unsigned long flags;
193
194 spin_lock_irqsave(&pdata->dyn_callback_lock, flags);
195 list_for_each_entry(callback, &pdata->dyn_callback_list, list)
196 if (callback->usage_id == usage_id &&
197 callback->hsdev == hsdev) {
198 list_del(&callback->list);
199 kfree(callback);
200 break;
201 }
202 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
203
204 return 0;
205 }
206 EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
207
208 int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
209 u32 field_index, s32 value)
210 {
211 struct hid_report *report;
212 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
213 int ret = 0;
214
215 mutex_lock(&data->mutex);
216 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
217 if (!report || (field_index >= report->maxfield)) {
218 ret = -EINVAL;
219 goto done_proc;
220 }
221 hid_set_field(report->field[field_index], 0, value);
222 hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT);
223 hid_hw_wait(hsdev->hdev);
224
225 done_proc:
226 mutex_unlock(&data->mutex);
227
228 return ret;
229 }
230 EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
231
232 int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
233 u32 field_index, s32 *value)
234 {
235 struct hid_report *report;
236 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
237 int ret = 0;
238
239 mutex_lock(&data->mutex);
240 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
241 if (!report || (field_index >= report->maxfield) ||
242 report->field[field_index]->report_count < 1) {
243 ret = -EINVAL;
244 goto done_proc;
245 }
246 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
247 hid_hw_wait(hsdev->hdev);
248 *value = report->field[field_index]->value[0];
249
250 done_proc:
251 mutex_unlock(&data->mutex);
252
253 return ret;
254 }
255 EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
256
257
258 int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
259 u32 usage_id,
260 u32 attr_usage_id, u32 report_id)
261 {
262 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
263 unsigned long flags;
264 struct hid_report *report;
265 int ret_val = 0;
266
267 mutex_lock(&data->mutex);
268 memset(&data->pending, 0, sizeof(data->pending));
269 init_completion(&data->pending.ready);
270 data->pending.usage_id = usage_id;
271 data->pending.attr_usage_id = attr_usage_id;
272 data->pending.raw_size = 0;
273
274 spin_lock_irqsave(&data->lock, flags);
275 data->pending.status = true;
276 spin_unlock_irqrestore(&data->lock, flags);
277 report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT);
278 if (!report)
279 goto err_free;
280
281 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
282 wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5);
283 switch (data->pending.raw_size) {
284 case 1:
285 ret_val = *(u8 *)data->pending.raw_data;
286 break;
287 case 2:
288 ret_val = *(u16 *)data->pending.raw_data;
289 break;
290 case 4:
291 ret_val = *(u32 *)data->pending.raw_data;
292 break;
293 default:
294 ret_val = 0;
295 }
296 kfree(data->pending.raw_data);
297
298 err_free:
299 data->pending.status = false;
300 mutex_unlock(&data->mutex);
301
302 return ret_val;
303 }
304 EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
305
306 int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev,
307 u32 report_id, int field_index, u32 usage_id)
308 {
309 struct hid_report *report;
310 struct hid_field *field;
311 int i;
312
313 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
314 if (!report || (field_index >= report->maxfield))
315 goto done_proc;
316
317 field = report->field[field_index];
318 for (i = 0; i < field->maxusage; ++i) {
319 if (field->usage[i].hid == usage_id)
320 return field->usage[i].usage_index;
321 }
322
323 done_proc:
324 return -EINVAL;
325 }
326 EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index);
327
328 int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
329 u8 type,
330 u32 usage_id,
331 u32 attr_usage_id,
332 struct hid_sensor_hub_attribute_info *info)
333 {
334 int ret = -1;
335 int i;
336 struct hid_report *report;
337 struct hid_field *field;
338 struct hid_report_enum *report_enum;
339 struct hid_device *hdev = hsdev->hdev;
340
341 /* Initialize with defaults */
342 info->usage_id = usage_id;
343 info->attrib_id = attr_usage_id;
344 info->report_id = -1;
345 info->index = -1;
346 info->units = -1;
347 info->unit_expo = -1;
348
349 report_enum = &hdev->report_enum[type];
350 list_for_each_entry(report, &report_enum->report_list, list) {
351 for (i = 0; i < report->maxfield; ++i) {
352 field = report->field[i];
353 if (field->maxusage) {
354 if (field->physical == usage_id &&
355 (field->logical == attr_usage_id ||
356 field->usage[0].hid ==
357 attr_usage_id) &&
358 (field->usage[0].collection_index >=
359 hsdev->start_collection_index) &&
360 (field->usage[0].collection_index <
361 hsdev->end_collection_index)) {
362
363 sensor_hub_fill_attr_info(info, i,
364 report->id,
365 field);
366 ret = 0;
367 break;
368 }
369 }
370 }
371
372 }
373
374 return ret;
375 }
376 EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info);
377
378 #ifdef CONFIG_PM
379 static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message)
380 {
381 struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
382 struct hid_sensor_hub_callbacks_list *callback;
383 unsigned long flags;
384
385 hid_dbg(hdev, " sensor_hub_suspend\n");
386 spin_lock_irqsave(&pdata->dyn_callback_lock, flags);
387 list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
388 if (callback->usage_callback->suspend)
389 callback->usage_callback->suspend(
390 callback->hsdev, callback->priv);
391 }
392 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
393
394 return 0;
395 }
396
397 static int sensor_hub_resume(struct hid_device *hdev)
398 {
399 struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
400 struct hid_sensor_hub_callbacks_list *callback;
401 unsigned long flags;
402
403 hid_dbg(hdev, " sensor_hub_resume\n");
404 spin_lock_irqsave(&pdata->dyn_callback_lock, flags);
405 list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
406 if (callback->usage_callback->resume)
407 callback->usage_callback->resume(
408 callback->hsdev, callback->priv);
409 }
410 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags);
411
412 return 0;
413 }
414
415 static int sensor_hub_reset_resume(struct hid_device *hdev)
416 {
417 return 0;
418 }
419 #endif
420
421 /*
422 * Handle raw report as sent by device
423 */
424 static int sensor_hub_raw_event(struct hid_device *hdev,
425 struct hid_report *report, u8 *raw_data, int size)
426 {
427 int i;
428 u8 *ptr;
429 int sz;
430 struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
431 unsigned long flags;
432 struct hid_sensor_hub_callbacks *callback = NULL;
433 struct hid_collection *collection = NULL;
434 void *priv = NULL;
435 struct hid_sensor_hub_device *hsdev = NULL;
436
437 hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n",
438 report->id, size, report->type);
439 hid_dbg(hdev, "maxfield:%d\n", report->maxfield);
440 if (report->type != HID_INPUT_REPORT)
441 return 1;
442
443 ptr = raw_data;
444 ptr++; /* Skip report id */
445
446 spin_lock_irqsave(&pdata->lock, flags);
447
448 for (i = 0; i < report->maxfield; ++i) {
449 hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n",
450 i, report->field[i]->usage->collection_index,
451 report->field[i]->usage->hid,
452 (report->field[i]->report_size *
453 report->field[i]->report_count)/8);
454 sz = (report->field[i]->report_size *
455 report->field[i]->report_count)/8;
456 if (pdata->pending.status && pdata->pending.attr_usage_id ==
457 report->field[i]->usage->hid) {
458 hid_dbg(hdev, "data was pending ...\n");
459 pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC);
460 if (pdata->pending.raw_data)
461 pdata->pending.raw_size = sz;
462 else
463 pdata->pending.raw_size = 0;
464 complete(&pdata->pending.ready);
465 }
466 collection = &hdev->collection[
467 report->field[i]->usage->collection_index];
468 hid_dbg(hdev, "collection->usage %x\n",
469 collection->usage);
470
471 callback = sensor_hub_get_callback(hdev,
472 report->field[i]->physical,
473 report->field[i]->usage[0].collection_index,
474 &hsdev, &priv);
475
476 if (callback && callback->capture_sample) {
477 if (report->field[i]->logical)
478 callback->capture_sample(hsdev,
479 report->field[i]->logical, sz, ptr,
480 callback->pdev);
481 else
482 callback->capture_sample(hsdev,
483 report->field[i]->usage->hid, sz, ptr,
484 callback->pdev);
485 }
486 ptr += sz;
487 }
488 if (callback && collection && callback->send_event)
489 callback->send_event(hsdev, collection->usage,
490 callback->pdev);
491 spin_unlock_irqrestore(&pdata->lock, flags);
492
493 return 1;
494 }
495
496 int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev)
497 {
498 int ret = 0;
499 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
500
501 mutex_lock(&data->mutex);
502 if (!data->ref_cnt) {
503 ret = hid_hw_open(hsdev->hdev);
504 if (ret) {
505 hid_err(hsdev->hdev, "failed to open hid device\n");
506 mutex_unlock(&data->mutex);
507 return ret;
508 }
509 }
510 data->ref_cnt++;
511 mutex_unlock(&data->mutex);
512
513 return ret;
514 }
515 EXPORT_SYMBOL_GPL(sensor_hub_device_open);
516
517 void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev)
518 {
519 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
520
521 mutex_lock(&data->mutex);
522 data->ref_cnt--;
523 if (!data->ref_cnt)
524 hid_hw_close(hsdev->hdev);
525 mutex_unlock(&data->mutex);
526 }
527 EXPORT_SYMBOL_GPL(sensor_hub_device_close);
528
529 static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc,
530 unsigned int *rsize)
531 {
532 int index;
533 struct sensor_hub_data *sd = hid_get_drvdata(hdev);
534 unsigned char report_block[] = {
535 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05};
536 unsigned char power_block[] = {
537 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05};
538
539 if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) {
540 hid_dbg(hdev, "No Enum quirks\n");
541 return rdesc;
542 }
543
544 /* Looks for power and report state usage id and force to 1 */
545 for (index = 0; index < *rsize; ++index) {
546 if (((*rsize - index) > sizeof(report_block)) &&
547 !memcmp(&rdesc[index], report_block,
548 sizeof(report_block))) {
549 rdesc[index + 4] = 0x01;
550 index += sizeof(report_block);
551 }
552 if (((*rsize - index) > sizeof(power_block)) &&
553 !memcmp(&rdesc[index], power_block,
554 sizeof(power_block))) {
555 rdesc[index + 4] = 0x01;
556 index += sizeof(power_block);
557 }
558 }
559
560 return rdesc;
561 }
562
563 static int sensor_hub_probe(struct hid_device *hdev,
564 const struct hid_device_id *id)
565 {
566 int ret;
567 struct sensor_hub_data *sd;
568 int i;
569 char *name;
570 int dev_cnt;
571 struct hid_sensor_hub_device *hsdev;
572 struct hid_sensor_hub_device *last_hsdev = NULL;
573
574 sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL);
575 if (!sd) {
576 hid_err(hdev, "cannot allocate Sensor data\n");
577 return -ENOMEM;
578 }
579
580 hid_set_drvdata(hdev, sd);
581 sd->quirks = id->driver_data;
582
583 spin_lock_init(&sd->lock);
584 spin_lock_init(&sd->dyn_callback_lock);
585 mutex_init(&sd->mutex);
586 ret = hid_parse(hdev);
587 if (ret) {
588 hid_err(hdev, "parse failed\n");
589 return ret;
590 }
591 INIT_LIST_HEAD(&hdev->inputs);
592
593 ret = hid_hw_start(hdev, 0);
594 if (ret) {
595 hid_err(hdev, "hw start failed\n");
596 return ret;
597 }
598 INIT_LIST_HEAD(&sd->dyn_callback_list);
599 sd->hid_sensor_client_cnt = 0;
600
601 dev_cnt = sensor_hub_get_physical_device_count(hdev);
602 if (dev_cnt > HID_MAX_PHY_DEVICES) {
603 hid_err(hdev, "Invalid Physical device count\n");
604 ret = -EINVAL;
605 goto err_stop_hw;
606 }
607 sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt *
608 sizeof(struct mfd_cell),
609 GFP_KERNEL);
610 if (sd->hid_sensor_hub_client_devs == NULL) {
611 hid_err(hdev, "Failed to allocate memory for mfd cells\n");
612 ret = -ENOMEM;
613 goto err_stop_hw;
614 }
615
616 for (i = 0; i < hdev->maxcollection; ++i) {
617 struct hid_collection *collection = &hdev->collection[i];
618
619 if (collection->type == HID_COLLECTION_PHYSICAL) {
620
621 hsdev = kzalloc(sizeof(*hsdev), GFP_KERNEL);
622 if (!hsdev) {
623 hid_err(hdev, "cannot allocate hid_sensor_hub_device\n");
624 ret = -ENOMEM;
625 goto err_no_mem;
626 }
627 hsdev->hdev = hdev;
628 hsdev->vendor_id = hdev->vendor;
629 hsdev->product_id = hdev->product;
630 hsdev->start_collection_index = i;
631 if (last_hsdev)
632 last_hsdev->end_collection_index = i;
633 last_hsdev = hsdev;
634 name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x",
635 collection->usage);
636 if (name == NULL) {
637 hid_err(hdev, "Failed MFD device name\n");
638 ret = -ENOMEM;
639 kfree(hsdev);
640 goto err_no_mem;
641 }
642 sd->hid_sensor_hub_client_devs[
643 sd->hid_sensor_client_cnt].id =
644 PLATFORM_DEVID_AUTO;
645 sd->hid_sensor_hub_client_devs[
646 sd->hid_sensor_client_cnt].name = name;
647 sd->hid_sensor_hub_client_devs[
648 sd->hid_sensor_client_cnt].platform_data =
649 hsdev;
650 sd->hid_sensor_hub_client_devs[
651 sd->hid_sensor_client_cnt].pdata_size =
652 sizeof(*hsdev);
653 hid_dbg(hdev, "Adding %s:%d\n", name,
654 hsdev->start_collection_index);
655 sd->hid_sensor_client_cnt++;
656 }
657 }
658 if (last_hsdev)
659 last_hsdev->end_collection_index = i;
660
661 ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs,
662 sd->hid_sensor_client_cnt, NULL, 0, NULL);
663 if (ret < 0)
664 goto err_no_mem;
665
666 return ret;
667
668 err_no_mem:
669 for (i = 0; i < sd->hid_sensor_client_cnt; ++i) {
670 kfree(sd->hid_sensor_hub_client_devs[i].name);
671 kfree(sd->hid_sensor_hub_client_devs[i].platform_data);
672 }
673 kfree(sd->hid_sensor_hub_client_devs);
674 err_stop_hw:
675 hid_hw_stop(hdev);
676
677 return ret;
678 }
679
680 static void sensor_hub_remove(struct hid_device *hdev)
681 {
682 struct sensor_hub_data *data = hid_get_drvdata(hdev);
683 unsigned long flags;
684 int i;
685
686 hid_dbg(hdev, " hardware removed\n");
687 hid_hw_close(hdev);
688 hid_hw_stop(hdev);
689 spin_lock_irqsave(&data->lock, flags);
690 if (data->pending.status)
691 complete(&data->pending.ready);
692 spin_unlock_irqrestore(&data->lock, flags);
693 mfd_remove_devices(&hdev->dev);
694 for (i = 0; i < data->hid_sensor_client_cnt; ++i) {
695 kfree(data->hid_sensor_hub_client_devs[i].name);
696 kfree(data->hid_sensor_hub_client_devs[i].platform_data);
697 }
698 kfree(data->hid_sensor_hub_client_devs);
699 hid_set_drvdata(hdev, NULL);
700 mutex_destroy(&data->mutex);
701 }
702
703 static const struct hid_device_id sensor_hub_devices[] = {
704 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0,
705 USB_DEVICE_ID_INTEL_HID_SENSOR_0),
706 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
707 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1,
708 USB_DEVICE_ID_INTEL_HID_SENSOR_0),
709 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
710 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1,
711 USB_DEVICE_ID_INTEL_HID_SENSOR_1),
712 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
713 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT,
714 USB_DEVICE_ID_MS_SURFACE_PRO_2),
715 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
716 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT,
717 USB_DEVICE_ID_MS_TOUCH_COVER_2),
718 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
719 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT,
720 USB_DEVICE_ID_MS_TYPE_COVER_2),
721 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
722 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0,
723 USB_DEVICE_ID_STM_HID_SENSOR_1),
724 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
725 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS,
726 USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA),
727 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
728 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID,
729 HID_ANY_ID) },
730 { }
731 };
732 MODULE_DEVICE_TABLE(hid, sensor_hub_devices);
733
734 static struct hid_driver sensor_hub_driver = {
735 .name = "hid-sensor-hub",
736 .id_table = sensor_hub_devices,
737 .probe = sensor_hub_probe,
738 .remove = sensor_hub_remove,
739 .raw_event = sensor_hub_raw_event,
740 .report_fixup = sensor_hub_report_fixup,
741 #ifdef CONFIG_PM
742 .suspend = sensor_hub_suspend,
743 .resume = sensor_hub_resume,
744 .reset_resume = sensor_hub_reset_resume,
745 #endif
746 };
747 module_hid_driver(sensor_hub_driver);
748
749 MODULE_DESCRIPTION("HID Sensor Hub driver");
750 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
751 MODULE_LICENSE("GPL");
Linux with added FPC-III support