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, | |
6adc83fc | 226 | u32 field_index, int buffer_size, void *buffer) |
401ca24f | 227 | { |
228 | struct hid_report *report; | |
5902fde1 | 229 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
6adc83fc | 230 | int report_size; |
401ca24f | 231 | int ret = 0; |
232 | ||
401ca24f | 233 | mutex_lock(&data->mutex); |
234 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 235 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 236 | report->field[field_index]->report_count < 1) { |
401ca24f | 237 | ret = -EINVAL; |
238 | goto done_proc; | |
239 | } | |
d8814272 | 240 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 241 | hid_hw_wait(hsdev->hdev); |
6adc83fc SP |
242 | |
243 | /* calculate number of bytes required to read this field */ | |
244 | report_size = DIV_ROUND_UP(report->field[field_index]->report_size, | |
245 | 8) * | |
246 | report->field[field_index]->report_count; | |
247 | if (!report_size) { | |
248 | ret = -EINVAL; | |
249 | goto done_proc; | |
250 | } | |
251 | ret = min(report_size, buffer_size); | |
252 | memcpy(buffer, report->field[field_index]->value, ret); | |
401ca24f | 253 | |
254 | done_proc: | |
255 | mutex_unlock(&data->mutex); | |
256 | ||
257 | return ret; | |
258 | } | |
259 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
260 | ||
261 | ||
262 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
263 | u32 usage_id, | |
b3f4737d SP |
264 | u32 attr_usage_id, u32 report_id, |
265 | enum sensor_hub_read_flags flag) | |
401ca24f | 266 | { |
5902fde1 | 267 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 268 | unsigned long flags; |
269 | struct hid_report *report; | |
270 | int ret_val = 0; | |
271 | ||
b3f4737d SP |
272 | report = sensor_hub_report(report_id, hsdev->hdev, |
273 | HID_INPUT_REPORT); | |
f74346a0 | 274 | if (!report) |
b3f4737d | 275 | return -EINVAL; |
f74346a0 | 276 | |
b3f4737d SP |
277 | mutex_lock(&hsdev->mutex); |
278 | if (flag == SENSOR_HUB_SYNC) { | |
279 | memset(&hsdev->pending, 0, sizeof(hsdev->pending)); | |
280 | init_completion(&hsdev->pending.ready); | |
281 | hsdev->pending.usage_id = usage_id; | |
282 | hsdev->pending.attr_usage_id = attr_usage_id; | |
283 | hsdev->pending.raw_size = 0; | |
284 | ||
285 | spin_lock_irqsave(&data->lock, flags); | |
286 | hsdev->pending.status = true; | |
287 | spin_unlock_irqrestore(&data->lock, flags); | |
288 | } | |
e651a1da | 289 | mutex_lock(&data->mutex); |
d8814272 | 290 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
e651a1da | 291 | mutex_unlock(&data->mutex); |
b3f4737d SP |
292 | if (flag == SENSOR_HUB_SYNC) { |
293 | wait_for_completion_interruptible_timeout( | |
294 | &hsdev->pending.ready, HZ*5); | |
295 | switch (hsdev->pending.raw_size) { | |
296 | case 1: | |
297 | ret_val = *(u8 *)hsdev->pending.raw_data; | |
298 | break; | |
299 | case 2: | |
300 | ret_val = *(u16 *)hsdev->pending.raw_data; | |
301 | break; | |
302 | case 4: | |
303 | ret_val = *(u32 *)hsdev->pending.raw_data; | |
304 | break; | |
305 | default: | |
306 | ret_val = 0; | |
307 | } | |
308 | kfree(hsdev->pending.raw_data); | |
309 | hsdev->pending.status = false; | |
401ca24f | 310 | } |
e651a1da | 311 | mutex_unlock(&hsdev->mutex); |
401ca24f | 312 | |
313 | return ret_val; | |
314 | } | |
315 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
316 | ||
e02cee48 SP |
317 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
318 | u32 report_id, int field_index, u32 usage_id) | |
319 | { | |
320 | struct hid_report *report; | |
321 | struct hid_field *field; | |
322 | int i; | |
323 | ||
324 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
325 | if (!report || (field_index >= report->maxfield)) | |
326 | goto done_proc; | |
327 | ||
328 | field = report->field[field_index]; | |
329 | for (i = 0; i < field->maxusage; ++i) { | |
330 | if (field->usage[i].hid == usage_id) | |
331 | return field->usage[i].usage_index; | |
332 | } | |
333 | ||
334 | done_proc: | |
335 | return -EINVAL; | |
336 | } | |
337 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); | |
338 | ||
401ca24f | 339 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
340 | u8 type, | |
341 | u32 usage_id, | |
342 | u32 attr_usage_id, | |
343 | struct hid_sensor_hub_attribute_info *info) | |
344 | { | |
345 | int ret = -1; | |
ca2ed12f | 346 | int i; |
401ca24f | 347 | struct hid_report *report; |
348 | struct hid_field *field; | |
349 | struct hid_report_enum *report_enum; | |
350 | struct hid_device *hdev = hsdev->hdev; | |
351 | ||
352 | /* Initialize with defaults */ | |
353 | info->usage_id = usage_id; | |
5902fde1 | 354 | info->attrib_id = attr_usage_id; |
401ca24f | 355 | info->report_id = -1; |
356 | info->index = -1; | |
357 | info->units = -1; | |
358 | info->unit_expo = -1; | |
359 | ||
401ca24f | 360 | report_enum = &hdev->report_enum[type]; |
361 | list_for_each_entry(report, &report_enum->report_list, list) { | |
362 | for (i = 0; i < report->maxfield; ++i) { | |
363 | field = report->field[i]; | |
ca2ed12f SP |
364 | if (field->maxusage) { |
365 | if (field->physical == usage_id && | |
366 | (field->logical == attr_usage_id || | |
367 | field->usage[0].hid == | |
368 | attr_usage_id) && | |
369 | (field->usage[0].collection_index >= | |
370 | hsdev->start_collection_index) && | |
371 | (field->usage[0].collection_index < | |
372 | hsdev->end_collection_index)) { | |
373 | ||
374 | sensor_hub_fill_attr_info(info, i, | |
375 | report->id, | |
376 | field); | |
377 | ret = 0; | |
378 | break; | |
401ca24f | 379 | } |
380 | } | |
401ca24f | 381 | } |
ca2ed12f | 382 | |
401ca24f | 383 | } |
384 | ||
401ca24f | 385 | return ret; |
386 | } | |
387 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
388 | ||
389 | #ifdef CONFIG_PM | |
390 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
391 | { | |
5902fde1 | 392 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 393 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 394 | unsigned long flags; |
401ca24f | 395 | |
396 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
0ccf091d | 397 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 398 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
399 | if (callback->usage_callback->suspend) | |
400 | callback->usage_callback->suspend( | |
ca2ed12f | 401 | callback->hsdev, callback->priv); |
401ca24f | 402 | } |
0ccf091d | 403 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 404 | |
405 | return 0; | |
406 | } | |
407 | ||
408 | static int sensor_hub_resume(struct hid_device *hdev) | |
409 | { | |
5902fde1 | 410 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 411 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 412 | unsigned long flags; |
401ca24f | 413 | |
414 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
0ccf091d | 415 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 416 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
417 | if (callback->usage_callback->resume) | |
418 | callback->usage_callback->resume( | |
ca2ed12f | 419 | callback->hsdev, callback->priv); |
401ca24f | 420 | } |
0ccf091d | 421 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 422 | |
423 | return 0; | |
424 | } | |
425 | ||
426 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
427 | { | |
428 | return 0; | |
429 | } | |
430 | #endif | |
5902fde1 | 431 | |
401ca24f | 432 | /* |
433 | * Handle raw report as sent by device | |
434 | */ | |
435 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
436 | struct hid_report *report, u8 *raw_data, int size) | |
437 | { | |
438 | int i; | |
439 | u8 *ptr; | |
440 | int sz; | |
441 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
442 | unsigned long flags; | |
443 | struct hid_sensor_hub_callbacks *callback = NULL; | |
444 | struct hid_collection *collection = NULL; | |
445 | void *priv = NULL; | |
ca2ed12f | 446 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 447 | |
448 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
449 | report->id, size, report->type); | |
450 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
451 | if (report->type != HID_INPUT_REPORT) | |
452 | return 1; | |
453 | ||
454 | ptr = raw_data; | |
15261f6d | 455 | ptr++; /* Skip report id */ |
401ca24f | 456 | |
401ca24f | 457 | spin_lock_irqsave(&pdata->lock, flags); |
458 | ||
459 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 460 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
461 | i, report->field[i]->usage->collection_index, | |
462 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
463 | (report->field[i]->report_size * |
464 | report->field[i]->report_count)/8); | |
465 | sz = (report->field[i]->report_size * | |
466 | report->field[i]->report_count)/8; | |
401ca24f | 467 | collection = &hdev->collection[ |
468 | report->field[i]->usage->collection_index]; | |
469 | hid_dbg(hdev, "collection->usage %x\n", | |
470 | collection->usage); | |
ca2ed12f SP |
471 | |
472 | callback = sensor_hub_get_callback(hdev, | |
473 | report->field[i]->physical, | |
474 | report->field[i]->usage[0].collection_index, | |
475 | &hsdev, &priv); | |
e651a1da SP |
476 | if (!callback) { |
477 | ptr += sz; | |
478 | continue; | |
479 | } | |
480 | if (hsdev->pending.status && hsdev->pending.attr_usage_id == | |
481 | report->field[i]->usage->hid) { | |
482 | hid_dbg(hdev, "data was pending ...\n"); | |
483 | hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); | |
484 | if (hsdev->pending.raw_data) | |
485 | hsdev->pending.raw_size = sz; | |
486 | else | |
487 | hsdev->pending.raw_size = 0; | |
488 | complete(&hsdev->pending.ready); | |
489 | } | |
490 | if (callback->capture_sample) { | |
401ca24f | 491 | if (report->field[i]->logical) |
ca2ed12f | 492 | callback->capture_sample(hsdev, |
401ca24f | 493 | report->field[i]->logical, sz, ptr, |
494 | callback->pdev); | |
495 | else | |
ca2ed12f | 496 | callback->capture_sample(hsdev, |
401ca24f | 497 | report->field[i]->usage->hid, sz, ptr, |
498 | callback->pdev); | |
499 | } | |
500 | ptr += sz; | |
501 | } | |
502 | if (callback && collection && callback->send_event) | |
ca2ed12f | 503 | callback->send_event(hsdev, collection->usage, |
401ca24f | 504 | callback->pdev); |
505 | spin_unlock_irqrestore(&pdata->lock, flags); | |
506 | ||
401ca24f | 507 | return 1; |
508 | } | |
509 | ||
1df3a401 SP |
510 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
511 | { | |
512 | int ret = 0; | |
513 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
514 | ||
515 | mutex_lock(&data->mutex); | |
ca2ed12f | 516 | if (!data->ref_cnt) { |
1df3a401 SP |
517 | ret = hid_hw_open(hsdev->hdev); |
518 | if (ret) { | |
519 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
520 | mutex_unlock(&data->mutex); | |
521 | return ret; | |
522 | } | |
523 | } | |
ca2ed12f | 524 | data->ref_cnt++; |
1df3a401 SP |
525 | mutex_unlock(&data->mutex); |
526 | ||
527 | return ret; | |
528 | } | |
529 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
530 | ||
531 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
532 | { | |
533 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
534 | ||
535 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
536 | data->ref_cnt--; |
537 | if (!data->ref_cnt) | |
1df3a401 SP |
538 | hid_hw_close(hsdev->hdev); |
539 | mutex_unlock(&data->mutex); | |
540 | } | |
541 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
542 | ||
875e36f8 SP |
543 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
544 | unsigned int *rsize) | |
545 | { | |
546 | int index; | |
547 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
548 | unsigned char report_block[] = { | |
549 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
550 | unsigned char power_block[] = { | |
551 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
552 | ||
553 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
554 | hid_dbg(hdev, "No Enum quirks\n"); | |
555 | return rdesc; | |
556 | } | |
557 | ||
558 | /* Looks for power and report state usage id and force to 1 */ | |
559 | for (index = 0; index < *rsize; ++index) { | |
560 | if (((*rsize - index) > sizeof(report_block)) && | |
561 | !memcmp(&rdesc[index], report_block, | |
562 | sizeof(report_block))) { | |
563 | rdesc[index + 4] = 0x01; | |
564 | index += sizeof(report_block); | |
565 | } | |
566 | if (((*rsize - index) > sizeof(power_block)) && | |
567 | !memcmp(&rdesc[index], power_block, | |
568 | sizeof(power_block))) { | |
569 | rdesc[index + 4] = 0x01; | |
570 | index += sizeof(power_block); | |
571 | } | |
572 | } | |
573 | ||
574 | return rdesc; | |
575 | } | |
576 | ||
401ca24f | 577 | static int sensor_hub_probe(struct hid_device *hdev, |
578 | const struct hid_device_id *id) | |
579 | { | |
580 | int ret; | |
581 | struct sensor_hub_data *sd; | |
582 | int i; | |
583 | char *name; | |
401ca24f | 584 | int dev_cnt; |
ca2ed12f SP |
585 | struct hid_sensor_hub_device *hsdev; |
586 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
cb67126f | 587 | struct hid_sensor_hub_device *collection_hsdev = NULL; |
401ca24f | 588 | |
905cc199 | 589 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 590 | if (!sd) { |
591 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
592 | return -ENOMEM; | |
593 | } | |
ca2ed12f | 594 | |
401ca24f | 595 | hid_set_drvdata(hdev, sd); |
875e36f8 | 596 | sd->quirks = id->driver_data; |
ca2ed12f | 597 | |
401ca24f | 598 | spin_lock_init(&sd->lock); |
599 | spin_lock_init(&sd->dyn_callback_lock); | |
600 | mutex_init(&sd->mutex); | |
601 | ret = hid_parse(hdev); | |
602 | if (ret) { | |
603 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 604 | return ret; |
401ca24f | 605 | } |
401ca24f | 606 | INIT_LIST_HEAD(&hdev->inputs); |
607 | ||
401ca24f | 608 | ret = hid_hw_start(hdev, 0); |
609 | if (ret) { | |
610 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 611 | return ret; |
401ca24f | 612 | } |
401ca24f | 613 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
614 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 615 | |
ca2ed12f | 616 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 617 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
618 | hid_err(hdev, "Invalid Physical device count\n"); | |
619 | ret = -EINVAL; | |
1df3a401 | 620 | goto err_stop_hw; |
401ca24f | 621 | } |
5be5db24 HS |
622 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
623 | sizeof(struct mfd_cell), | |
624 | GFP_KERNEL); | |
401ca24f | 625 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 626 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 627 | ret = -ENOMEM; |
1df3a401 | 628 | goto err_stop_hw; |
401ca24f | 629 | } |
ca2ed12f SP |
630 | |
631 | for (i = 0; i < hdev->maxcollection; ++i) { | |
632 | struct hid_collection *collection = &hdev->collection[i]; | |
633 | ||
cb67126f SP |
634 | if (collection->type == HID_COLLECTION_PHYSICAL || |
635 | collection->type == HID_COLLECTION_APPLICATION) { | |
ca2ed12f | 636 | |
5be5db24 HS |
637 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
638 | GFP_KERNEL); | |
ca2ed12f SP |
639 | if (!hsdev) { |
640 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
641 | ret = -ENOMEM; | |
5be5db24 | 642 | goto err_stop_hw; |
ca2ed12f SP |
643 | } |
644 | hsdev->hdev = hdev; | |
645 | hsdev->vendor_id = hdev->vendor; | |
646 | hsdev->product_id = hdev->product; | |
e651a1da SP |
647 | hsdev->usage = collection->usage; |
648 | mutex_init(&hsdev->mutex); | |
ca2ed12f SP |
649 | hsdev->start_collection_index = i; |
650 | if (last_hsdev) | |
651 | last_hsdev->end_collection_index = i; | |
652 | last_hsdev = hsdev; | |
5be5db24 HS |
653 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
654 | "HID-SENSOR-%x", | |
655 | collection->usage); | |
5902fde1 | 656 | if (name == NULL) { |
f2f13a68 | 657 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 658 | ret = -ENOMEM; |
5be5db24 | 659 | goto err_stop_hw; |
401ca24f | 660 | } |
d81cae80 | 661 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 662 | sd->hid_sensor_client_cnt].name = name; |
663 | sd->hid_sensor_hub_client_devs[ | |
664 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 665 | hsdev; |
401ca24f | 666 | sd->hid_sensor_hub_client_devs[ |
667 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
668 | sizeof(*hsdev); |
669 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
670 | hsdev->start_collection_index); | |
401ca24f | 671 | sd->hid_sensor_client_cnt++; |
cb67126f SP |
672 | if (collection_hsdev) |
673 | collection_hsdev->end_collection_index = i; | |
674 | if (collection->type == HID_COLLECTION_APPLICATION && | |
675 | collection->usage == HID_USAGE_SENSOR_COLLECTION) | |
676 | collection_hsdev = hsdev; | |
401ca24f | 677 | } |
678 | } | |
ca2ed12f SP |
679 | if (last_hsdev) |
680 | last_hsdev->end_collection_index = i; | |
cb67126f SP |
681 | if (collection_hsdev) |
682 | collection_hsdev->end_collection_index = i; | |
ca2ed12f | 683 | |
16b5fe29 JH |
684 | ret = mfd_add_hotplug_devices(&hdev->dev, |
685 | sd->hid_sensor_hub_client_devs, | |
686 | sd->hid_sensor_client_cnt); | |
401ca24f | 687 | if (ret < 0) |
5be5db24 | 688 | goto err_stop_hw; |
401ca24f | 689 | |
690 | return ret; | |
691 | ||
401ca24f | 692 | err_stop_hw: |
693 | hid_hw_stop(hdev); | |
401ca24f | 694 | |
695 | return ret; | |
696 | } | |
697 | ||
698 | static void sensor_hub_remove(struct hid_device *hdev) | |
699 | { | |
700 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
701 | unsigned long flags; | |
e651a1da | 702 | int i; |
401ca24f | 703 | |
704 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 705 | hid_hw_close(hdev); |
f2f13a68 | 706 | hid_hw_stop(hdev); |
401ca24f | 707 | spin_lock_irqsave(&data->lock, flags); |
e651a1da SP |
708 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
709 | struct hid_sensor_hub_device *hsdev = | |
710 | data->hid_sensor_hub_client_devs[i].platform_data; | |
711 | if (hsdev->pending.status) | |
712 | complete(&hsdev->pending.ready); | |
713 | } | |
401ca24f | 714 | spin_unlock_irqrestore(&data->lock, flags); |
715 | mfd_remove_devices(&hdev->dev); | |
401ca24f | 716 | hid_set_drvdata(hdev, NULL); |
717 | mutex_destroy(&data->mutex); | |
401ca24f | 718 | } |
719 | ||
720 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 | 721 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
30f58877 | 722 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
875e36f8 SP |
723 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
724 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
30f58877 SCP |
725 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
726 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
727 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
728 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), | |
875e36f8 | 729 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
00478ee8 RA |
730 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
731 | USB_DEVICE_ID_MS_SURFACE_PRO_2), | |
732 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
733 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
734 | USB_DEVICE_ID_MS_TOUCH_COVER_2), | |
735 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
736 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
737 | USB_DEVICE_ID_MS_TYPE_COVER_2), | |
738 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
467669c5 SP |
739 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
740 | USB_DEVICE_ID_STM_HID_SENSOR), | |
741 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed | 742 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
dde3b45c | 743 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
218eb9ed | 744 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
825747bb PPS |
745 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
746 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), | |
747 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
748 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
749 | HID_ANY_ID) }, | |
401ca24f | 750 | { } |
751 | }; | |
752 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
753 | ||
401ca24f | 754 | static struct hid_driver sensor_hub_driver = { |
755 | .name = "hid-sensor-hub", | |
756 | .id_table = sensor_hub_devices, | |
757 | .probe = sensor_hub_probe, | |
758 | .remove = sensor_hub_remove, | |
759 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 760 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 761 | #ifdef CONFIG_PM |
762 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
763 | .resume = sensor_hub_resume, |
764 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 765 | #endif |
766 | }; | |
f425458e | 767 | module_hid_driver(sensor_hub_driver); |
401ca24f | 768 | |
769 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
770 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
771 | MODULE_LICENSE("GPL"); |