401ca24f |
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/usb.h> |
22 | #include "usbhid/usbhid.h" |
23 | #include <linux/module.h> |
24 | #include <linux/slab.h> |
25 | #include <linux/mfd/core.h> |
26 | #include <linux/list.h> |
27 | #include <linux/hid-sensor-ids.h> |
28 | #include <linux/hid-sensor-hub.h> |
29 | #include "hid-ids.h" |
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 | */ |
60 | struct sensor_hub_data { |
61 | struct hid_sensor_hub_device *hsdev; |
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 | }; |
70 | |
71 | /** |
72 | * struct hid_sensor_hub_callbacks_list - Stores callback list |
73 | * @list: list head. |
74 | * @usage_id: usage id for a physical device. |
75 | * @usage_callback: Stores registered callback functions. |
76 | * @priv: Private data for a physical device. |
77 | */ |
78 | struct hid_sensor_hub_callbacks_list { |
79 | struct list_head list; |
80 | u32 usage_id; |
81 | struct hid_sensor_hub_callbacks *usage_callback; |
82 | void *priv; |
83 | }; |
84 | |
85 | static int sensor_hub_check_for_sensor_page(struct hid_device *hdev) |
86 | { |
87 | int i; |
88 | int ret = -EINVAL; |
89 | |
90 | for (i = 0; i < hdev->maxcollection; i++) { |
91 | struct hid_collection *col = &hdev->collection[i]; |
92 | if (col->type == HID_COLLECTION_PHYSICAL && |
93 | (col->usage & HID_USAGE_PAGE) == HID_UP_SENSOR) { |
94 | ret = 0; |
95 | break; |
96 | } |
97 | } |
98 | |
99 | return ret; |
100 | } |
101 | |
102 | static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, |
103 | int dir) |
104 | { |
105 | struct hid_report *report; |
106 | |
107 | list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { |
108 | if (report->id == id) |
109 | return report; |
110 | } |
111 | hid_warn(hdev, "No report with id 0x%x found\n", id); |
112 | |
113 | return NULL; |
114 | } |
115 | |
116 | static int sensor_hub_get_physical_device_count( |
117 | struct hid_report_enum *report_enum) |
118 | { |
119 | struct hid_report *report; |
120 | struct hid_field *field; |
121 | int cnt = 0; |
122 | |
123 | list_for_each_entry(report, &report_enum->report_list, list) { |
124 | field = report->field[0]; |
125 | if (report->maxfield && field && |
126 | field->physical) |
127 | cnt++; |
128 | } |
129 | |
130 | return cnt; |
131 | } |
132 | |
133 | static void sensor_hub_fill_attr_info( |
134 | struct hid_sensor_hub_attribute_info *info, |
135 | s32 index, s32 report_id, s32 units, s32 unit_expo, s32 size) |
136 | { |
137 | info->index = index; |
138 | info->report_id = report_id; |
139 | info->units = units; |
140 | info->unit_expo = unit_expo; |
141 | info->size = size/8; |
142 | } |
143 | |
144 | static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( |
145 | struct hid_device *hdev, |
146 | u32 usage_id, void **priv) |
147 | { |
148 | struct hid_sensor_hub_callbacks_list *callback; |
149 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
150 | |
151 | spin_lock(&pdata->dyn_callback_lock); |
152 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
153 | if (callback->usage_id == usage_id) { |
154 | *priv = callback->priv; |
155 | spin_unlock(&pdata->dyn_callback_lock); |
156 | return callback->usage_callback; |
157 | } |
158 | spin_unlock(&pdata->dyn_callback_lock); |
159 | |
160 | return NULL; |
161 | } |
162 | |
163 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, |
164 | u32 usage_id, |
165 | struct hid_sensor_hub_callbacks *usage_callback) |
166 | { |
167 | struct hid_sensor_hub_callbacks_list *callback; |
168 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); |
169 | |
170 | spin_lock(&pdata->dyn_callback_lock); |
171 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
172 | if (callback->usage_id == usage_id) { |
173 | spin_unlock(&pdata->dyn_callback_lock); |
174 | return -EINVAL; |
175 | } |
176 | callback = kzalloc(sizeof(*callback), GFP_KERNEL); |
177 | if (!callback) { |
178 | spin_unlock(&pdata->dyn_callback_lock); |
179 | return -ENOMEM; |
180 | } |
181 | callback->usage_callback = usage_callback; |
182 | callback->usage_id = usage_id; |
183 | callback->priv = NULL; |
184 | list_add_tail(&callback->list, &pdata->dyn_callback_list); |
185 | spin_unlock(&pdata->dyn_callback_lock); |
186 | |
187 | return 0; |
188 | } |
189 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); |
190 | |
191 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, |
192 | u32 usage_id) |
193 | { |
194 | struct hid_sensor_hub_callbacks_list *callback; |
195 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); |
196 | |
197 | spin_lock(&pdata->dyn_callback_lock); |
198 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
199 | if (callback->usage_id == usage_id) { |
200 | list_del(&callback->list); |
201 | kfree(callback); |
202 | break; |
203 | } |
204 | spin_unlock(&pdata->dyn_callback_lock); |
205 | |
206 | return 0; |
207 | } |
208 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); |
209 | |
210 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, |
211 | u32 field_index, s32 value) |
212 | { |
213 | struct hid_report *report; |
214 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
215 | int ret = 0; |
216 | |
217 | if (report_id < 0) |
218 | return -EINVAL; |
219 | |
220 | mutex_lock(&data->mutex); |
221 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); |
222 | if (!report || (field_index >= report->maxfield)) { |
223 | ret = -EINVAL; |
224 | goto done_proc; |
225 | } |
226 | hid_set_field(report->field[field_index], 0, value); |
227 | usbhid_submit_report(hsdev->hdev, report, USB_DIR_OUT); |
228 | usbhid_wait_io(hsdev->hdev); |
229 | |
230 | done_proc: |
231 | mutex_unlock(&data->mutex); |
232 | |
233 | return ret; |
234 | } |
235 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); |
236 | |
237 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, |
238 | u32 field_index, s32 *value) |
239 | { |
240 | struct hid_report *report; |
241 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
242 | int ret = 0; |
243 | |
244 | if (report_id < 0) |
245 | return -EINVAL; |
246 | |
247 | mutex_lock(&data->mutex); |
248 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); |
249 | if (!report || (field_index >= report->maxfield)) { |
250 | ret = -EINVAL; |
251 | goto done_proc; |
252 | } |
253 | usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN); |
254 | usbhid_wait_io(hsdev->hdev); |
255 | *value = report->field[field_index]->value[0]; |
256 | |
257 | done_proc: |
258 | mutex_unlock(&data->mutex); |
259 | |
260 | return ret; |
261 | } |
262 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); |
263 | |
264 | |
265 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, |
266 | u32 usage_id, |
267 | u32 attr_usage_id, u32 report_id) |
268 | { |
269 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
270 | unsigned long flags; |
271 | struct hid_report *report; |
272 | int ret_val = 0; |
273 | |
274 | if (report_id < 0) |
275 | return -EINVAL; |
276 | |
277 | mutex_lock(&data->mutex); |
278 | memset(&data->pending, 0, sizeof(data->pending)); |
279 | init_completion(&data->pending.ready); |
280 | data->pending.usage_id = usage_id; |
281 | data->pending.attr_usage_id = attr_usage_id; |
282 | data->pending.raw_size = 0; |
283 | |
284 | spin_lock_irqsave(&data->lock, flags); |
285 | data->pending.status = true; |
286 | report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); |
287 | if (!report) { |
288 | spin_unlock_irqrestore(&data->lock, flags); |
289 | goto err_free; |
290 | } |
291 | usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN); |
292 | spin_unlock_irqrestore(&data->lock, flags); |
293 | wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); |
294 | switch (data->pending.raw_size) { |
295 | case 1: |
296 | ret_val = *(u8 *)data->pending.raw_data; |
297 | break; |
298 | case 2: |
299 | ret_val = *(u16 *)data->pending.raw_data; |
300 | break; |
301 | case 4: |
302 | ret_val = *(u32 *)data->pending.raw_data; |
303 | break; |
304 | default: |
305 | ret_val = 0; |
306 | } |
307 | kfree(data->pending.raw_data); |
308 | |
309 | err_free: |
310 | data->pending.status = false; |
311 | mutex_unlock(&data->mutex); |
312 | |
313 | return ret_val; |
314 | } |
315 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); |
316 | |
317 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
318 | u8 type, |
319 | u32 usage_id, |
320 | u32 attr_usage_id, |
321 | struct hid_sensor_hub_attribute_info *info) |
322 | { |
323 | int ret = -1; |
324 | int i, j; |
325 | int collection_index = -1; |
326 | struct hid_report *report; |
327 | struct hid_field *field; |
328 | struct hid_report_enum *report_enum; |
329 | struct hid_device *hdev = hsdev->hdev; |
330 | |
331 | /* Initialize with defaults */ |
332 | info->usage_id = usage_id; |
333 | info->attrib_id = attr_usage_id; |
334 | info->report_id = -1; |
335 | info->index = -1; |
336 | info->units = -1; |
337 | info->unit_expo = -1; |
338 | |
339 | for (i = 0; i < hdev->maxcollection; ++i) { |
340 | struct hid_collection *collection = &hdev->collection[i]; |
341 | if (usage_id == collection->usage) { |
342 | collection_index = i; |
343 | break; |
344 | } |
345 | } |
346 | if (collection_index == -1) |
347 | goto err_ret; |
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->physical == usage_id && |
354 | field->logical == attr_usage_id) { |
355 | sensor_hub_fill_attr_info(info, i, report->id, |
356 | field->unit, field->unit_exponent, |
357 | field->report_size); |
358 | ret = 0; |
359 | } else { |
360 | for (j = 0; j < field->maxusage; ++j) { |
361 | if (field->usage[j].hid == |
362 | attr_usage_id && |
363 | field->usage[j].collection_index == |
364 | collection_index) { |
365 | sensor_hub_fill_attr_info(info, |
366 | i, report->id, |
367 | field->unit, |
368 | field->unit_exponent, |
369 | field->report_size); |
370 | ret = 0; |
371 | break; |
372 | } |
373 | } |
374 | } |
375 | if (ret == 0) |
376 | break; |
377 | } |
378 | } |
379 | |
380 | err_ret: |
381 | return ret; |
382 | } |
383 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); |
384 | |
385 | #ifdef CONFIG_PM |
386 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) |
387 | { |
388 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
389 | struct hid_sensor_hub_callbacks_list *callback; |
390 | |
391 | hid_dbg(hdev, " sensor_hub_suspend\n"); |
392 | spin_lock(&pdata->dyn_callback_lock); |
393 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
394 | if (callback->usage_callback->suspend) |
395 | callback->usage_callback->suspend( |
396 | pdata->hsdev, callback->priv); |
397 | } |
398 | spin_unlock(&pdata->dyn_callback_lock); |
399 | |
400 | return 0; |
401 | } |
402 | |
403 | static int sensor_hub_resume(struct hid_device *hdev) |
404 | { |
405 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
406 | struct hid_sensor_hub_callbacks_list *callback; |
407 | |
408 | hid_dbg(hdev, " sensor_hub_resume\n"); |
409 | spin_lock(&pdata->dyn_callback_lock); |
410 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
411 | if (callback->usage_callback->resume) |
412 | callback->usage_callback->resume( |
413 | pdata->hsdev, callback->priv); |
414 | } |
415 | spin_unlock(&pdata->dyn_callback_lock); |
416 | |
417 | return 0; |
418 | } |
419 | |
420 | static int sensor_hub_reset_resume(struct hid_device *hdev) |
421 | { |
422 | return 0; |
423 | } |
424 | #endif |
425 | /* |
426 | * Handle raw report as sent by device |
427 | */ |
428 | static int sensor_hub_raw_event(struct hid_device *hdev, |
429 | struct hid_report *report, u8 *raw_data, int size) |
430 | { |
431 | int i; |
432 | u8 *ptr; |
433 | int sz; |
434 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
435 | unsigned long flags; |
436 | struct hid_sensor_hub_callbacks *callback = NULL; |
437 | struct hid_collection *collection = NULL; |
438 | void *priv = NULL; |
439 | |
440 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", |
441 | report->id, size, report->type); |
442 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); |
443 | if (report->type != HID_INPUT_REPORT) |
444 | return 1; |
445 | |
446 | ptr = raw_data; |
447 | ptr++; /*Skip report id*/ |
448 | |
449 | if (!report) |
450 | goto err_report; |
451 | |
452 | spin_lock_irqsave(&pdata->lock, flags); |
453 | |
454 | for (i = 0; i < report->maxfield; ++i) { |
455 | |
456 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
457 | i, report->field[i]->usage->collection_index, |
458 | report->field[i]->usage->hid, |
459 | report->field[i]->report_size/8); |
460 | |
461 | sz = report->field[i]->report_size/8; |
462 | if (pdata->pending.status && pdata->pending.attr_usage_id == |
463 | report->field[i]->usage->hid) { |
464 | hid_dbg(hdev, "data was pending ...\n"); |
465 | pdata->pending.raw_data = kmalloc(sz, GFP_KERNEL); |
466 | if (pdata->pending.raw_data) { |
467 | memcpy(pdata->pending.raw_data, ptr, sz); |
468 | pdata->pending.raw_size = sz; |
469 | } else |
470 | pdata->pending.raw_size = 0; |
471 | complete(&pdata->pending.ready); |
472 | } |
473 | collection = &hdev->collection[ |
474 | report->field[i]->usage->collection_index]; |
475 | hid_dbg(hdev, "collection->usage %x\n", |
476 | collection->usage); |
477 | callback = sensor_hub_get_callback(pdata->hsdev->hdev, |
478 | report->field[i]->physical, |
479 | &priv); |
480 | if (callback && callback->capture_sample) { |
481 | if (report->field[i]->logical) |
482 | callback->capture_sample(pdata->hsdev, |
483 | report->field[i]->logical, sz, ptr, |
484 | callback->pdev); |
485 | else |
486 | callback->capture_sample(pdata->hsdev, |
487 | report->field[i]->usage->hid, sz, ptr, |
488 | callback->pdev); |
489 | } |
490 | ptr += sz; |
491 | } |
492 | if (callback && collection && callback->send_event) |
493 | callback->send_event(pdata->hsdev, collection->usage, |
494 | callback->pdev); |
495 | spin_unlock_irqrestore(&pdata->lock, flags); |
496 | |
497 | err_report: |
498 | return 1; |
499 | } |
500 | |
501 | static int sensor_hub_probe(struct hid_device *hdev, |
502 | const struct hid_device_id *id) |
503 | { |
504 | int ret; |
505 | struct sensor_hub_data *sd; |
506 | int i; |
507 | char *name; |
508 | struct hid_report *report; |
509 | struct hid_report_enum *report_enum; |
510 | struct hid_field *field; |
511 | int dev_cnt; |
512 | |
513 | sd = kzalloc(sizeof(struct sensor_hub_data), GFP_KERNEL); |
514 | if (!sd) { |
515 | hid_err(hdev, "cannot allocate Sensor data\n"); |
516 | return -ENOMEM; |
517 | } |
518 | sd->hsdev = kzalloc(sizeof(struct hid_sensor_hub_device), GFP_KERNEL); |
519 | if (!sd->hsdev) { |
520 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); |
521 | ret = -ENOMEM; |
522 | goto err_free_hub; |
523 | } |
524 | hid_set_drvdata(hdev, sd); |
525 | sd->hsdev->hdev = hdev; |
526 | sd->hsdev->vendor_id = hdev->vendor; |
527 | sd->hsdev->product_id = hdev->product; |
528 | spin_lock_init(&sd->lock); |
529 | spin_lock_init(&sd->dyn_callback_lock); |
530 | mutex_init(&sd->mutex); |
531 | ret = hid_parse(hdev); |
532 | if (ret) { |
533 | hid_err(hdev, "parse failed\n"); |
534 | goto err_free; |
535 | } |
536 | if (sensor_hub_check_for_sensor_page(hdev) < 0) { |
537 | hid_err(hdev, "sensor page not found\n"); |
538 | goto err_free; |
539 | } |
540 | INIT_LIST_HEAD(&hdev->inputs); |
541 | |
542 | hdev->claimed = HID_CLAIMED_INPUT; |
543 | ret = hid_hw_start(hdev, 0); |
544 | if (ret) { |
545 | hid_err(hdev, "hw start failed\n"); |
546 | goto err_free; |
547 | } |
548 | ret = hid_hw_open(hdev); |
549 | if (ret) { |
550 | hid_err(hdev, "failed to open input interrupt pipe\n"); |
551 | goto err_stop_hw; |
552 | } |
553 | |
554 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
555 | sd->hid_sensor_client_cnt = 0; |
556 | report_enum = &hdev->report_enum[HID_INPUT_REPORT]; |
557 | |
558 | dev_cnt = sensor_hub_get_physical_device_count(report_enum); |
559 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
560 | hid_err(hdev, "Invalid Physical device count\n"); |
561 | ret = -EINVAL; |
562 | goto err_close; |
563 | } |
564 | sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt * |
565 | sizeof(struct mfd_cell), |
566 | GFP_KERNEL); |
567 | if (sd->hid_sensor_hub_client_devs == NULL) { |
568 | hid_err(hdev, |
569 | "Failed to allocate memory for mfd cells\n"); |
570 | ret = -ENOMEM; |
571 | goto err_close; |
572 | } |
573 | list_for_each_entry(report, &report_enum->report_list, list) { |
574 | hid_dbg(hdev, "Report id:%x\n", report->id); |
575 | field = report->field[0]; |
576 | if (report->maxfield && field && |
577 | field->physical) { |
578 | name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x", |
579 | field->physical); |
580 | if (name == NULL) { |
581 | hid_err(hdev, |
582 | "Failed MFD device name\n"); |
583 | ret = -ENOMEM; |
584 | goto err_free_cells; |
585 | } |
586 | sd->hid_sensor_hub_client_devs[ |
587 | sd->hid_sensor_client_cnt].name = name; |
588 | sd->hid_sensor_hub_client_devs[ |
589 | sd->hid_sensor_client_cnt].platform_data = |
590 | sd->hsdev; |
591 | sd->hid_sensor_hub_client_devs[ |
592 | sd->hid_sensor_client_cnt].pdata_size = |
593 | sizeof(*sd->hsdev); |
594 | hid_dbg(hdev, "Adding %s:%p\n", name, sd); |
595 | sd->hid_sensor_client_cnt++; |
596 | } |
597 | } |
598 | ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, |
599 | sd->hid_sensor_client_cnt, NULL, 0); |
600 | if (ret < 0) |
601 | goto err_free_names; |
602 | |
603 | return ret; |
604 | |
605 | err_free_names: |
606 | for (i = 0; i < sd->hid_sensor_client_cnt ; ++i) |
607 | kfree(sd->hid_sensor_hub_client_devs[i].name); |
608 | err_free_cells: |
609 | kfree(sd->hid_sensor_hub_client_devs); |
610 | err_close: |
611 | hid_hw_stop(hdev); |
612 | hid_hw_close(hdev); |
613 | err_stop_hw: |
614 | hid_hw_stop(hdev); |
615 | err_free: |
616 | kfree(sd->hsdev); |
617 | err_free_hub: |
618 | kfree(sd); |
619 | |
620 | return ret; |
621 | } |
622 | |
623 | static void sensor_hub_remove(struct hid_device *hdev) |
624 | { |
625 | struct sensor_hub_data *data = hid_get_drvdata(hdev); |
626 | unsigned long flags; |
627 | int i; |
628 | |
629 | hid_dbg(hdev, " hardware removed\n"); |
630 | hdev->claimed &= ~HID_CLAIMED_INPUT; |
631 | hid_hw_stop(hdev); |
632 | hid_hw_close(hdev); |
633 | spin_lock_irqsave(&data->lock, flags); |
634 | if (data->pending.status) |
635 | complete(&data->pending.ready); |
636 | spin_unlock_irqrestore(&data->lock, flags); |
637 | mfd_remove_devices(&hdev->dev); |
638 | for (i = 0; i < data->hid_sensor_client_cnt ; ++i) |
639 | kfree(data->hid_sensor_hub_client_devs[i].name); |
640 | kfree(data->hid_sensor_hub_client_devs); |
641 | hid_set_drvdata(hdev, NULL); |
642 | mutex_destroy(&data->mutex); |
643 | kfree(data->hsdev); |
644 | kfree(data); |
645 | } |
646 | |
647 | static const struct hid_device_id sensor_hub_devices[] = { |
648 | { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086, |
649 | USB_DEVICE_ID_SENSOR_HUB_1020) }, |
650 | { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087, |
651 | USB_DEVICE_ID_SENSOR_HUB_1020) }, |
652 | { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086, |
653 | USB_DEVICE_ID_SENSOR_HUB_09FA) }, |
654 | { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087, |
655 | USB_DEVICE_ID_SENSOR_HUB_09FA) }, |
656 | { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, |
657 | USB_DEVICE_ID_SENSOR_HUB_7014) }, |
658 | { } |
659 | }; |
660 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); |
661 | |
662 | static const struct hid_usage_id sensor_hub_grabbed_usages[] = { |
663 | { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID }, |
664 | { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1 } |
665 | }; |
666 | |
667 | static struct hid_driver sensor_hub_driver = { |
668 | .name = "hid-sensor-hub", |
669 | .id_table = sensor_hub_devices, |
670 | .probe = sensor_hub_probe, |
671 | .remove = sensor_hub_remove, |
672 | .raw_event = sensor_hub_raw_event, |
673 | #ifdef CONFIG_PM |
674 | .suspend = sensor_hub_suspend, |
675 | .resume = sensor_hub_resume, |
676 | .reset_resume = sensor_hub_reset_resume, |
677 | #endif |
678 | }; |
679 | |
680 | static int __init sensor_hub_init(void) |
681 | { |
682 | return hid_register_driver(&sensor_hub_driver); |
683 | } |
684 | |
685 | static void __exit sensor_hub_exit(void) |
686 | { |
687 | hid_unregister_driver(&sensor_hub_driver); |
688 | } |
689 | |
690 | module_init(sensor_hub_init); |
691 | module_exit(sensor_hub_exit); |
692 | |
693 | MODULE_DESCRIPTION("HID Sensor Hub driver"); |
694 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); |
695 | MODULE_LICENSE("GPL"); |