Commit | Line | Data |
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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> | |
401ca24f | 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 | ||
875e36f8 SP |
29 | #define HID_SENSOR_HUB_ENUM_QUIRK 0x01 |
30 | ||
401ca24f | 31 | /** |
32 | * struct sensor_hub_data - Hold a instance data for a HID hub device | |
33 | * @hsdev: Stored hid instance for current hub device. | |
34 | * @mutex: Mutex to serialize synchronous request. | |
35 | * @lock: Spin lock to protect pending request structure. | |
401ca24f | 36 | * @dyn_callback_list: Holds callback function |
37 | * @dyn_callback_lock: spin lock to protect callback list | |
38 | * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance. | |
39 | * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached). | |
ca2ed12f | 40 | * @ref_cnt: Number of MFD clients have opened this device |
401ca24f | 41 | */ |
42 | struct sensor_hub_data { | |
401ca24f | 43 | struct mutex mutex; |
44 | spinlock_t lock; | |
401ca24f | 45 | struct list_head dyn_callback_list; |
46 | spinlock_t dyn_callback_lock; | |
47 | struct mfd_cell *hid_sensor_hub_client_devs; | |
48 | int hid_sensor_client_cnt; | |
875e36f8 | 49 | unsigned long quirks; |
ca2ed12f | 50 | int ref_cnt; |
401ca24f | 51 | }; |
52 | ||
53 | /** | |
54 | * struct hid_sensor_hub_callbacks_list - Stores callback list | |
55 | * @list: list head. | |
56 | * @usage_id: usage id for a physical device. | |
57 | * @usage_callback: Stores registered callback functions. | |
58 | * @priv: Private data for a physical device. | |
59 | */ | |
60 | struct hid_sensor_hub_callbacks_list { | |
61 | struct list_head list; | |
62 | u32 usage_id; | |
ca2ed12f | 63 | struct hid_sensor_hub_device *hsdev; |
401ca24f | 64 | struct hid_sensor_hub_callbacks *usage_callback; |
65 | void *priv; | |
66 | }; | |
67 | ||
401ca24f | 68 | static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, |
69 | int dir) | |
70 | { | |
71 | struct hid_report *report; | |
72 | ||
73 | list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { | |
74 | if (report->id == id) | |
75 | return report; | |
76 | } | |
77 | hid_warn(hdev, "No report with id 0x%x found\n", id); | |
78 | ||
79 | return NULL; | |
80 | } | |
81 | ||
ca2ed12f | 82 | static int sensor_hub_get_physical_device_count(struct hid_device *hdev) |
401ca24f | 83 | { |
ca2ed12f SP |
84 | int i; |
85 | int count = 0; | |
401ca24f | 86 | |
ca2ed12f SP |
87 | for (i = 0; i < hdev->maxcollection; ++i) { |
88 | struct hid_collection *collection = &hdev->collection[i]; | |
cb67126f SP |
89 | if (collection->type == HID_COLLECTION_PHYSICAL || |
90 | collection->type == HID_COLLECTION_APPLICATION) | |
ca2ed12f | 91 | ++count; |
401ca24f | 92 | } |
93 | ||
ca2ed12f | 94 | return count; |
401ca24f | 95 | } |
96 | ||
97 | static void sensor_hub_fill_attr_info( | |
98 | struct hid_sensor_hub_attribute_info *info, | |
9f740ffa | 99 | s32 index, s32 report_id, struct hid_field *field) |
401ca24f | 100 | { |
101 | info->index = index; | |
102 | info->report_id = report_id; | |
9f740ffa SP |
103 | info->units = field->unit; |
104 | info->unit_expo = field->unit_exponent; | |
105 | info->size = (field->report_size * field->report_count)/8; | |
106 | info->logical_minimum = field->logical_minimum; | |
107 | info->logical_maximum = field->logical_maximum; | |
401ca24f | 108 | } |
109 | ||
110 | static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( | |
111 | struct hid_device *hdev, | |
ca2ed12f SP |
112 | u32 usage_id, |
113 | int collection_index, | |
114 | struct hid_sensor_hub_device **hsdev, | |
115 | void **priv) | |
401ca24f | 116 | { |
117 | struct hid_sensor_hub_callbacks_list *callback; | |
118 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
119 | ||
120 | spin_lock(&pdata->dyn_callback_lock); | |
121 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
cb67126f SP |
122 | if ((callback->usage_id == usage_id || |
123 | callback->usage_id == HID_USAGE_SENSOR_COLLECTION) && | |
ca2ed12f SP |
124 | (collection_index >= |
125 | callback->hsdev->start_collection_index) && | |
126 | (collection_index < | |
127 | callback->hsdev->end_collection_index)) { | |
401ca24f | 128 | *priv = callback->priv; |
ca2ed12f | 129 | *hsdev = callback->hsdev; |
401ca24f | 130 | spin_unlock(&pdata->dyn_callback_lock); |
131 | return callback->usage_callback; | |
132 | } | |
133 | spin_unlock(&pdata->dyn_callback_lock); | |
134 | ||
135 | return NULL; | |
136 | } | |
137 | ||
138 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, | |
139 | u32 usage_id, | |
140 | struct hid_sensor_hub_callbacks *usage_callback) | |
141 | { | |
142 | struct hid_sensor_hub_callbacks_list *callback; | |
143 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 144 | unsigned long flags; |
401ca24f | 145 | |
0ccf091d | 146 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 147 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
148 | if (callback->usage_id == usage_id && |
149 | callback->hsdev == hsdev) { | |
0ccf091d | 150 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 151 | return -EINVAL; |
152 | } | |
2b7c4b8e | 153 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 154 | if (!callback) { |
0ccf091d | 155 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 156 | return -ENOMEM; |
157 | } | |
ca2ed12f | 158 | callback->hsdev = hsdev; |
401ca24f | 159 | callback->usage_callback = usage_callback; |
160 | callback->usage_id = usage_id; | |
161 | callback->priv = NULL; | |
cb67126f SP |
162 | /* |
163 | * If there is a handler registered for the collection type, then | |
164 | * it will handle all reports for sensors in this collection. If | |
165 | * there is also an individual sensor handler registration, then | |
166 | * we want to make sure that the reports are directed to collection | |
167 | * handler, as this may be a fusion sensor. So add collection handlers | |
168 | * to the beginning of the list, so that they are matched first. | |
169 | */ | |
170 | if (usage_id == HID_USAGE_SENSOR_COLLECTION) | |
171 | list_add(&callback->list, &pdata->dyn_callback_list); | |
172 | else | |
173 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
0ccf091d | 174 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 175 | |
176 | return 0; | |
177 | } | |
178 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
179 | ||
180 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
181 | u32 usage_id) | |
182 | { | |
183 | struct hid_sensor_hub_callbacks_list *callback; | |
184 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 185 | unsigned long flags; |
401ca24f | 186 | |
0ccf091d | 187 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 188 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
189 | if (callback->usage_id == usage_id && |
190 | callback->hsdev == hsdev) { | |
401ca24f | 191 | list_del(&callback->list); |
192 | kfree(callback); | |
193 | break; | |
194 | } | |
0ccf091d | 195 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 196 | |
197 | return 0; | |
198 | } | |
199 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); | |
200 | ||
201 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
202 | u32 field_index, s32 value) | |
203 | { | |
204 | struct hid_report *report; | |
5902fde1 | 205 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 206 | int ret = 0; |
207 | ||
401ca24f | 208 | mutex_lock(&data->mutex); |
209 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 210 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 211 | ret = -EINVAL; |
212 | goto done_proc; | |
213 | } | |
214 | hid_set_field(report->field[field_index], 0, value); | |
d8814272 | 215 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 216 | hid_hw_wait(hsdev->hdev); |
401ca24f | 217 | |
218 | done_proc: | |
219 | mutex_unlock(&data->mutex); | |
220 | ||
221 | return ret; | |
222 | } | |
223 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
224 | ||
225 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
226 | u32 field_index, s32 *value) | |
227 | { | |
228 | struct hid_report *report; | |
5902fde1 | 229 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 230 | int ret = 0; |
231 | ||
401ca24f | 232 | mutex_lock(&data->mutex); |
233 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 234 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 235 | report->field[field_index]->report_count < 1) { |
401ca24f | 236 | ret = -EINVAL; |
237 | goto done_proc; | |
238 | } | |
d8814272 | 239 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 240 | hid_hw_wait(hsdev->hdev); |
401ca24f | 241 | *value = report->field[field_index]->value[0]; |
242 | ||
243 | done_proc: | |
244 | mutex_unlock(&data->mutex); | |
245 | ||
246 | return ret; | |
247 | } | |
248 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
249 | ||
250 | ||
251 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
252 | u32 usage_id, | |
b3f4737d SP |
253 | u32 attr_usage_id, u32 report_id, |
254 | enum sensor_hub_read_flags flag) | |
401ca24f | 255 | { |
5902fde1 | 256 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 257 | unsigned long flags; |
258 | struct hid_report *report; | |
259 | int ret_val = 0; | |
260 | ||
b3f4737d SP |
261 | report = sensor_hub_report(report_id, hsdev->hdev, |
262 | HID_INPUT_REPORT); | |
f74346a0 | 263 | if (!report) |
b3f4737d | 264 | return -EINVAL; |
f74346a0 | 265 | |
b3f4737d SP |
266 | mutex_lock(&hsdev->mutex); |
267 | if (flag == SENSOR_HUB_SYNC) { | |
268 | memset(&hsdev->pending, 0, sizeof(hsdev->pending)); | |
269 | init_completion(&hsdev->pending.ready); | |
270 | hsdev->pending.usage_id = usage_id; | |
271 | hsdev->pending.attr_usage_id = attr_usage_id; | |
272 | hsdev->pending.raw_size = 0; | |
273 | ||
274 | spin_lock_irqsave(&data->lock, flags); | |
275 | hsdev->pending.status = true; | |
276 | spin_unlock_irqrestore(&data->lock, flags); | |
277 | } | |
e651a1da | 278 | mutex_lock(&data->mutex); |
d8814272 | 279 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
e651a1da | 280 | mutex_unlock(&data->mutex); |
b3f4737d SP |
281 | if (flag == SENSOR_HUB_SYNC) { |
282 | wait_for_completion_interruptible_timeout( | |
283 | &hsdev->pending.ready, HZ*5); | |
284 | switch (hsdev->pending.raw_size) { | |
285 | case 1: | |
286 | ret_val = *(u8 *)hsdev->pending.raw_data; | |
287 | break; | |
288 | case 2: | |
289 | ret_val = *(u16 *)hsdev->pending.raw_data; | |
290 | break; | |
291 | case 4: | |
292 | ret_val = *(u32 *)hsdev->pending.raw_data; | |
293 | break; | |
294 | default: | |
295 | ret_val = 0; | |
296 | } | |
297 | kfree(hsdev->pending.raw_data); | |
298 | hsdev->pending.status = false; | |
401ca24f | 299 | } |
e651a1da | 300 | mutex_unlock(&hsdev->mutex); |
401ca24f | 301 | |
302 | return ret_val; | |
303 | } | |
304 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
305 | ||
e02cee48 SP |
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 | ||
401ca24f | 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; | |
ca2ed12f | 335 | int i; |
401ca24f | 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; | |
5902fde1 | 343 | info->attrib_id = attr_usage_id; |
401ca24f | 344 | info->report_id = -1; |
345 | info->index = -1; | |
346 | info->units = -1; | |
347 | info->unit_expo = -1; | |
348 | ||
401ca24f | 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]; | |
ca2ed12f SP |
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; | |
401ca24f | 368 | } |
369 | } | |
401ca24f | 370 | } |
ca2ed12f | 371 | |
401ca24f | 372 | } |
373 | ||
401ca24f | 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 | { | |
5902fde1 | 381 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 382 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 383 | unsigned long flags; |
401ca24f | 384 | |
385 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
0ccf091d | 386 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 387 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
388 | if (callback->usage_callback->suspend) | |
389 | callback->usage_callback->suspend( | |
ca2ed12f | 390 | callback->hsdev, callback->priv); |
401ca24f | 391 | } |
0ccf091d | 392 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 393 | |
394 | return 0; | |
395 | } | |
396 | ||
397 | static int sensor_hub_resume(struct hid_device *hdev) | |
398 | { | |
5902fde1 | 399 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 400 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 401 | unsigned long flags; |
401ca24f | 402 | |
403 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
0ccf091d | 404 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 405 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
406 | if (callback->usage_callback->resume) | |
407 | callback->usage_callback->resume( | |
ca2ed12f | 408 | callback->hsdev, callback->priv); |
401ca24f | 409 | } |
0ccf091d | 410 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 411 | |
412 | return 0; | |
413 | } | |
414 | ||
415 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
416 | { | |
417 | return 0; | |
418 | } | |
419 | #endif | |
5902fde1 | 420 | |
401ca24f | 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; | |
ca2ed12f | 435 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 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; | |
15261f6d | 444 | ptr++; /* Skip report id */ |
401ca24f | 445 | |
401ca24f | 446 | spin_lock_irqsave(&pdata->lock, flags); |
447 | ||
448 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 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, | |
d4b1bba7 SP |
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; | |
401ca24f | 456 | collection = &hdev->collection[ |
457 | report->field[i]->usage->collection_index]; | |
458 | hid_dbg(hdev, "collection->usage %x\n", | |
459 | collection->usage); | |
ca2ed12f SP |
460 | |
461 | callback = sensor_hub_get_callback(hdev, | |
462 | report->field[i]->physical, | |
463 | report->field[i]->usage[0].collection_index, | |
464 | &hsdev, &priv); | |
e651a1da SP |
465 | if (!callback) { |
466 | ptr += sz; | |
467 | continue; | |
468 | } | |
469 | if (hsdev->pending.status && hsdev->pending.attr_usage_id == | |
470 | report->field[i]->usage->hid) { | |
471 | hid_dbg(hdev, "data was pending ...\n"); | |
472 | hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); | |
473 | if (hsdev->pending.raw_data) | |
474 | hsdev->pending.raw_size = sz; | |
475 | else | |
476 | hsdev->pending.raw_size = 0; | |
477 | complete(&hsdev->pending.ready); | |
478 | } | |
479 | if (callback->capture_sample) { | |
401ca24f | 480 | if (report->field[i]->logical) |
ca2ed12f | 481 | callback->capture_sample(hsdev, |
401ca24f | 482 | report->field[i]->logical, sz, ptr, |
483 | callback->pdev); | |
484 | else | |
ca2ed12f | 485 | callback->capture_sample(hsdev, |
401ca24f | 486 | report->field[i]->usage->hid, sz, ptr, |
487 | callback->pdev); | |
488 | } | |
489 | ptr += sz; | |
490 | } | |
491 | if (callback && collection && callback->send_event) | |
ca2ed12f | 492 | callback->send_event(hsdev, collection->usage, |
401ca24f | 493 | callback->pdev); |
494 | spin_unlock_irqrestore(&pdata->lock, flags); | |
495 | ||
401ca24f | 496 | return 1; |
497 | } | |
498 | ||
1df3a401 SP |
499 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
500 | { | |
501 | int ret = 0; | |
502 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
503 | ||
504 | mutex_lock(&data->mutex); | |
ca2ed12f | 505 | if (!data->ref_cnt) { |
1df3a401 SP |
506 | ret = hid_hw_open(hsdev->hdev); |
507 | if (ret) { | |
508 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
509 | mutex_unlock(&data->mutex); | |
510 | return ret; | |
511 | } | |
512 | } | |
ca2ed12f | 513 | data->ref_cnt++; |
1df3a401 SP |
514 | mutex_unlock(&data->mutex); |
515 | ||
516 | return ret; | |
517 | } | |
518 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
519 | ||
520 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
521 | { | |
522 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
523 | ||
524 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
525 | data->ref_cnt--; |
526 | if (!data->ref_cnt) | |
1df3a401 SP |
527 | hid_hw_close(hsdev->hdev); |
528 | mutex_unlock(&data->mutex); | |
529 | } | |
530 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
531 | ||
875e36f8 SP |
532 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
533 | unsigned int *rsize) | |
534 | { | |
535 | int index; | |
536 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
537 | unsigned char report_block[] = { | |
538 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
539 | unsigned char power_block[] = { | |
540 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
541 | ||
542 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
543 | hid_dbg(hdev, "No Enum quirks\n"); | |
544 | return rdesc; | |
545 | } | |
546 | ||
547 | /* Looks for power and report state usage id and force to 1 */ | |
548 | for (index = 0; index < *rsize; ++index) { | |
549 | if (((*rsize - index) > sizeof(report_block)) && | |
550 | !memcmp(&rdesc[index], report_block, | |
551 | sizeof(report_block))) { | |
552 | rdesc[index + 4] = 0x01; | |
553 | index += sizeof(report_block); | |
554 | } | |
555 | if (((*rsize - index) > sizeof(power_block)) && | |
556 | !memcmp(&rdesc[index], power_block, | |
557 | sizeof(power_block))) { | |
558 | rdesc[index + 4] = 0x01; | |
559 | index += sizeof(power_block); | |
560 | } | |
561 | } | |
562 | ||
563 | return rdesc; | |
564 | } | |
565 | ||
401ca24f | 566 | static int sensor_hub_probe(struct hid_device *hdev, |
567 | const struct hid_device_id *id) | |
568 | { | |
569 | int ret; | |
570 | struct sensor_hub_data *sd; | |
571 | int i; | |
572 | char *name; | |
401ca24f | 573 | int dev_cnt; |
ca2ed12f SP |
574 | struct hid_sensor_hub_device *hsdev; |
575 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
cb67126f | 576 | struct hid_sensor_hub_device *collection_hsdev = NULL; |
401ca24f | 577 | |
905cc199 | 578 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 579 | if (!sd) { |
580 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
581 | return -ENOMEM; | |
582 | } | |
ca2ed12f | 583 | |
401ca24f | 584 | hid_set_drvdata(hdev, sd); |
875e36f8 | 585 | sd->quirks = id->driver_data; |
ca2ed12f | 586 | |
401ca24f | 587 | spin_lock_init(&sd->lock); |
588 | spin_lock_init(&sd->dyn_callback_lock); | |
589 | mutex_init(&sd->mutex); | |
590 | ret = hid_parse(hdev); | |
591 | if (ret) { | |
592 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 593 | return ret; |
401ca24f | 594 | } |
401ca24f | 595 | INIT_LIST_HEAD(&hdev->inputs); |
596 | ||
401ca24f | 597 | ret = hid_hw_start(hdev, 0); |
598 | if (ret) { | |
599 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 600 | return ret; |
401ca24f | 601 | } |
401ca24f | 602 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
603 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 604 | |
ca2ed12f | 605 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 606 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
607 | hid_err(hdev, "Invalid Physical device count\n"); | |
608 | ret = -EINVAL; | |
1df3a401 | 609 | goto err_stop_hw; |
401ca24f | 610 | } |
5be5db24 HS |
611 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
612 | sizeof(struct mfd_cell), | |
613 | GFP_KERNEL); | |
401ca24f | 614 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 615 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 616 | ret = -ENOMEM; |
1df3a401 | 617 | goto err_stop_hw; |
401ca24f | 618 | } |
ca2ed12f SP |
619 | |
620 | for (i = 0; i < hdev->maxcollection; ++i) { | |
621 | struct hid_collection *collection = &hdev->collection[i]; | |
622 | ||
cb67126f SP |
623 | if (collection->type == HID_COLLECTION_PHYSICAL || |
624 | collection->type == HID_COLLECTION_APPLICATION) { | |
ca2ed12f | 625 | |
5be5db24 HS |
626 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
627 | GFP_KERNEL); | |
ca2ed12f SP |
628 | if (!hsdev) { |
629 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
630 | ret = -ENOMEM; | |
5be5db24 | 631 | goto err_stop_hw; |
ca2ed12f SP |
632 | } |
633 | hsdev->hdev = hdev; | |
634 | hsdev->vendor_id = hdev->vendor; | |
635 | hsdev->product_id = hdev->product; | |
e651a1da SP |
636 | hsdev->usage = collection->usage; |
637 | mutex_init(&hsdev->mutex); | |
ca2ed12f SP |
638 | hsdev->start_collection_index = i; |
639 | if (last_hsdev) | |
640 | last_hsdev->end_collection_index = i; | |
641 | last_hsdev = hsdev; | |
5be5db24 HS |
642 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
643 | "HID-SENSOR-%x", | |
644 | collection->usage); | |
5902fde1 | 645 | if (name == NULL) { |
f2f13a68 | 646 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 647 | ret = -ENOMEM; |
5be5db24 | 648 | goto err_stop_hw; |
401ca24f | 649 | } |
d81cae80 | 650 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 651 | sd->hid_sensor_client_cnt].name = name; |
652 | sd->hid_sensor_hub_client_devs[ | |
653 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 654 | hsdev; |
401ca24f | 655 | sd->hid_sensor_hub_client_devs[ |
656 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
657 | sizeof(*hsdev); |
658 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
659 | hsdev->start_collection_index); | |
401ca24f | 660 | sd->hid_sensor_client_cnt++; |
cb67126f SP |
661 | if (collection_hsdev) |
662 | collection_hsdev->end_collection_index = i; | |
663 | if (collection->type == HID_COLLECTION_APPLICATION && | |
664 | collection->usage == HID_USAGE_SENSOR_COLLECTION) | |
665 | collection_hsdev = hsdev; | |
401ca24f | 666 | } |
667 | } | |
ca2ed12f SP |
668 | if (last_hsdev) |
669 | last_hsdev->end_collection_index = i; | |
cb67126f SP |
670 | if (collection_hsdev) |
671 | collection_hsdev->end_collection_index = i; | |
ca2ed12f | 672 | |
16b5fe29 JH |
673 | ret = mfd_add_hotplug_devices(&hdev->dev, |
674 | sd->hid_sensor_hub_client_devs, | |
675 | sd->hid_sensor_client_cnt); | |
401ca24f | 676 | if (ret < 0) |
5be5db24 | 677 | goto err_stop_hw; |
401ca24f | 678 | |
679 | return ret; | |
680 | ||
401ca24f | 681 | err_stop_hw: |
682 | hid_hw_stop(hdev); | |
401ca24f | 683 | |
684 | return ret; | |
685 | } | |
686 | ||
687 | static void sensor_hub_remove(struct hid_device *hdev) | |
688 | { | |
689 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
690 | unsigned long flags; | |
e651a1da | 691 | int i; |
401ca24f | 692 | |
693 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 694 | hid_hw_close(hdev); |
f2f13a68 | 695 | hid_hw_stop(hdev); |
401ca24f | 696 | spin_lock_irqsave(&data->lock, flags); |
e651a1da SP |
697 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
698 | struct hid_sensor_hub_device *hsdev = | |
699 | data->hid_sensor_hub_client_devs[i].platform_data; | |
700 | if (hsdev->pending.status) | |
701 | complete(&hsdev->pending.ready); | |
702 | } | |
401ca24f | 703 | spin_unlock_irqrestore(&data->lock, flags); |
704 | mfd_remove_devices(&hdev->dev); | |
401ca24f | 705 | hid_set_drvdata(hdev, NULL); |
706 | mutex_destroy(&data->mutex); | |
401ca24f | 707 | } |
708 | ||
709 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 | 710 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
30f58877 | 711 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
875e36f8 SP |
712 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
713 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
30f58877 SCP |
714 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
715 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
716 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
717 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), | |
875e36f8 | 718 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
00478ee8 RA |
719 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
720 | USB_DEVICE_ID_MS_SURFACE_PRO_2), | |
721 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
722 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
723 | USB_DEVICE_ID_MS_TOUCH_COVER_2), | |
724 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
725 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
726 | USB_DEVICE_ID_MS_TYPE_COVER_2), | |
727 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
467669c5 SP |
728 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
729 | USB_DEVICE_ID_STM_HID_SENSOR), | |
730 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed | 731 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
dde3b45c | 732 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
218eb9ed | 733 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
825747bb PPS |
734 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
735 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), | |
736 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
737 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
738 | HID_ANY_ID) }, | |
401ca24f | 739 | { } |
740 | }; | |
741 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
742 | ||
401ca24f | 743 | static struct hid_driver sensor_hub_driver = { |
744 | .name = "hid-sensor-hub", | |
745 | .id_table = sensor_hub_devices, | |
746 | .probe = sensor_hub_probe, | |
747 | .remove = sensor_hub_remove, | |
748 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 749 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 750 | #ifdef CONFIG_PM |
751 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
752 | .resume = sensor_hub_resume, |
753 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 754 | #endif |
755 | }; | |
f425458e | 756 | module_hid_driver(sensor_hub_driver); |
401ca24f | 757 | |
758 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
759 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
760 | MODULE_LICENSE("GPL"); |