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_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). | |
ca2ed12f | 59 | * @ref_cnt: Number of MFD clients have opened this device |
401ca24f | 60 | */ |
61 | struct sensor_hub_data { | |
401ca24f | 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; | |
875e36f8 | 69 | unsigned long quirks; |
ca2ed12f | 70 | int ref_cnt; |
401ca24f | 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; | |
ca2ed12f | 83 | struct hid_sensor_hub_device *hsdev; |
401ca24f | 84 | struct hid_sensor_hub_callbacks *usage_callback; |
85 | void *priv; | |
86 | }; | |
87 | ||
401ca24f | 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 | ||
ca2ed12f | 102 | static int sensor_hub_get_physical_device_count(struct hid_device *hdev) |
401ca24f | 103 | { |
ca2ed12f SP |
104 | int i; |
105 | int count = 0; | |
401ca24f | 106 | |
ca2ed12f SP |
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; | |
401ca24f | 111 | } |
112 | ||
ca2ed12f | 113 | return count; |
401ca24f | 114 | } |
115 | ||
116 | static void sensor_hub_fill_attr_info( | |
117 | struct hid_sensor_hub_attribute_info *info, | |
9f740ffa | 118 | s32 index, s32 report_id, struct hid_field *field) |
401ca24f | 119 | { |
120 | info->index = index; | |
121 | info->report_id = report_id; | |
9f740ffa SP |
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; | |
401ca24f | 127 | } |
128 | ||
129 | static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( | |
130 | struct hid_device *hdev, | |
ca2ed12f SP |
131 | u32 usage_id, |
132 | int collection_index, | |
133 | struct hid_sensor_hub_device **hsdev, | |
134 | void **priv) | |
401ca24f | 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) | |
ca2ed12f SP |
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)) { | |
401ca24f | 146 | *priv = callback->priv; |
ca2ed12f | 147 | *hsdev = callback->hsdev; |
401ca24f | 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); | |
0ccf091d | 162 | unsigned long flags; |
401ca24f | 163 | |
0ccf091d | 164 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 165 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
166 | if (callback->usage_id == usage_id && |
167 | callback->hsdev == hsdev) { | |
0ccf091d | 168 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 169 | return -EINVAL; |
170 | } | |
2b7c4b8e | 171 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 172 | if (!callback) { |
0ccf091d | 173 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 174 | return -ENOMEM; |
175 | } | |
ca2ed12f | 176 | callback->hsdev = hsdev; |
401ca24f | 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); | |
0ccf091d | 181 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 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); | |
0ccf091d | 192 | unsigned long flags; |
401ca24f | 193 | |
0ccf091d | 194 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 195 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
196 | if (callback->usage_id == usage_id && |
197 | callback->hsdev == hsdev) { | |
401ca24f | 198 | list_del(&callback->list); |
199 | kfree(callback); | |
200 | break; | |
201 | } | |
0ccf091d | 202 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 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; | |
5902fde1 | 212 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 213 | int ret = 0; |
214 | ||
401ca24f | 215 | mutex_lock(&data->mutex); |
216 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 217 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 218 | ret = -EINVAL; |
219 | goto done_proc; | |
220 | } | |
221 | hid_set_field(report->field[field_index], 0, value); | |
d8814272 | 222 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 223 | hid_hw_wait(hsdev->hdev); |
401ca24f | 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; | |
5902fde1 | 236 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 237 | int ret = 0; |
238 | ||
401ca24f | 239 | mutex_lock(&data->mutex); |
240 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 241 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 242 | report->field[field_index]->report_count < 1) { |
401ca24f | 243 | ret = -EINVAL; |
244 | goto done_proc; | |
245 | } | |
d8814272 | 246 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 247 | hid_hw_wait(hsdev->hdev); |
401ca24f | 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 | { | |
5902fde1 | 262 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 263 | unsigned long flags; |
264 | struct hid_report *report; | |
265 | int ret_val = 0; | |
266 | ||
401ca24f | 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; | |
f74346a0 | 276 | spin_unlock_irqrestore(&data->lock, flags); |
401ca24f | 277 | report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); |
f74346a0 | 278 | if (!report) |
401ca24f | 279 | goto err_free; |
f74346a0 | 280 | |
d8814272 | 281 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 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 | ||
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 | if (pdata->pending.status && pdata->pending.attr_usage_id == |
457 | report->field[i]->usage->hid) { | |
458 | hid_dbg(hdev, "data was pending ...\n"); | |
7b0692f1 AS |
459 | pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); |
460 | if (pdata->pending.raw_data) | |
5902fde1 | 461 | pdata->pending.raw_size = sz; |
7b0692f1 | 462 | else |
401ca24f | 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); | |
ca2ed12f SP |
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 | ||
401ca24f | 476 | if (callback && callback->capture_sample) { |
477 | if (report->field[i]->logical) | |
ca2ed12f | 478 | callback->capture_sample(hsdev, |
401ca24f | 479 | report->field[i]->logical, sz, ptr, |
480 | callback->pdev); | |
481 | else | |
ca2ed12f | 482 | callback->capture_sample(hsdev, |
401ca24f | 483 | report->field[i]->usage->hid, sz, ptr, |
484 | callback->pdev); | |
485 | } | |
486 | ptr += sz; | |
487 | } | |
488 | if (callback && collection && callback->send_event) | |
ca2ed12f | 489 | callback->send_event(hsdev, collection->usage, |
401ca24f | 490 | callback->pdev); |
491 | spin_unlock_irqrestore(&pdata->lock, flags); | |
492 | ||
401ca24f | 493 | return 1; |
494 | } | |
495 | ||
1df3a401 SP |
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); | |
ca2ed12f | 502 | if (!data->ref_cnt) { |
1df3a401 SP |
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 | } | |
ca2ed12f | 510 | data->ref_cnt++; |
1df3a401 SP |
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); | |
ca2ed12f SP |
522 | data->ref_cnt--; |
523 | if (!data->ref_cnt) | |
1df3a401 SP |
524 | hid_hw_close(hsdev->hdev); |
525 | mutex_unlock(&data->mutex); | |
526 | } | |
527 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
528 | ||
875e36f8 SP |
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 | ||
401ca24f | 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; | |
401ca24f | 570 | int dev_cnt; |
ca2ed12f SP |
571 | struct hid_sensor_hub_device *hsdev; |
572 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
401ca24f | 573 | |
905cc199 | 574 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 575 | if (!sd) { |
576 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
577 | return -ENOMEM; | |
578 | } | |
ca2ed12f | 579 | |
401ca24f | 580 | hid_set_drvdata(hdev, sd); |
875e36f8 | 581 | sd->quirks = id->driver_data; |
ca2ed12f | 582 | |
401ca24f | 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"); | |
905cc199 | 589 | return ret; |
401ca24f | 590 | } |
401ca24f | 591 | INIT_LIST_HEAD(&hdev->inputs); |
592 | ||
401ca24f | 593 | ret = hid_hw_start(hdev, 0); |
594 | if (ret) { | |
595 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 596 | return ret; |
401ca24f | 597 | } |
401ca24f | 598 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
599 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 600 | |
ca2ed12f | 601 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 602 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
603 | hid_err(hdev, "Invalid Physical device count\n"); | |
604 | ret = -EINVAL; | |
1df3a401 | 605 | goto err_stop_hw; |
401ca24f | 606 | } |
5be5db24 HS |
607 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
608 | sizeof(struct mfd_cell), | |
609 | GFP_KERNEL); | |
401ca24f | 610 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 611 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 612 | ret = -ENOMEM; |
1df3a401 | 613 | goto err_stop_hw; |
401ca24f | 614 | } |
ca2ed12f SP |
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 | ||
5be5db24 HS |
621 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
622 | GFP_KERNEL); | |
ca2ed12f SP |
623 | if (!hsdev) { |
624 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
625 | ret = -ENOMEM; | |
5be5db24 | 626 | goto err_stop_hw; |
ca2ed12f SP |
627 | } |
628 | hsdev->hdev = hdev; | |
629 | hsdev->vendor_id = hdev->vendor; | |
630 | hsdev->product_id = hdev->product; | |
631 | hsdev->start_collection_index = i; | |
632 | if (last_hsdev) | |
633 | last_hsdev->end_collection_index = i; | |
634 | last_hsdev = hsdev; | |
5be5db24 HS |
635 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
636 | "HID-SENSOR-%x", | |
637 | collection->usage); | |
5902fde1 | 638 | if (name == NULL) { |
f2f13a68 | 639 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 640 | ret = -ENOMEM; |
5be5db24 | 641 | goto err_stop_hw; |
401ca24f | 642 | } |
643 | sd->hid_sensor_hub_client_devs[ | |
ca2ed12f SP |
644 | sd->hid_sensor_client_cnt].id = |
645 | PLATFORM_DEVID_AUTO; | |
d81cae80 | 646 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 647 | sd->hid_sensor_client_cnt].name = name; |
648 | sd->hid_sensor_hub_client_devs[ | |
649 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 650 | hsdev; |
401ca24f | 651 | sd->hid_sensor_hub_client_devs[ |
652 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
653 | sizeof(*hsdev); |
654 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
655 | hsdev->start_collection_index); | |
401ca24f | 656 | sd->hid_sensor_client_cnt++; |
657 | } | |
658 | } | |
ca2ed12f SP |
659 | if (last_hsdev) |
660 | last_hsdev->end_collection_index = i; | |
661 | ||
401ca24f | 662 | ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, |
f45c69b1 | 663 | sd->hid_sensor_client_cnt, NULL, 0, NULL); |
401ca24f | 664 | if (ret < 0) |
5be5db24 | 665 | goto err_stop_hw; |
401ca24f | 666 | |
667 | return ret; | |
668 | ||
401ca24f | 669 | err_stop_hw: |
670 | hid_hw_stop(hdev); | |
401ca24f | 671 | |
672 | return ret; | |
673 | } | |
674 | ||
675 | static void sensor_hub_remove(struct hid_device *hdev) | |
676 | { | |
677 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
678 | unsigned long flags; | |
401ca24f | 679 | |
680 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 681 | hid_hw_close(hdev); |
f2f13a68 | 682 | hid_hw_stop(hdev); |
401ca24f | 683 | spin_lock_irqsave(&data->lock, flags); |
684 | if (data->pending.status) | |
685 | complete(&data->pending.ready); | |
686 | spin_unlock_irqrestore(&data->lock, flags); | |
687 | mfd_remove_devices(&hdev->dev); | |
401ca24f | 688 | hid_set_drvdata(hdev, NULL); |
689 | mutex_destroy(&data->mutex); | |
401ca24f | 690 | } |
691 | ||
692 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 | 693 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
30f58877 | 694 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
875e36f8 SP |
695 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
696 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
30f58877 SCP |
697 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
698 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
699 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
700 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), | |
875e36f8 | 701 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
00478ee8 RA |
702 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
703 | USB_DEVICE_ID_MS_SURFACE_PRO_2), | |
704 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
705 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
706 | USB_DEVICE_ID_MS_TOUCH_COVER_2), | |
707 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
708 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
709 | USB_DEVICE_ID_MS_TYPE_COVER_2), | |
710 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
467669c5 SP |
711 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
712 | USB_DEVICE_ID_STM_HID_SENSOR), | |
713 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed | 714 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
dde3b45c | 715 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
218eb9ed | 716 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
825747bb PPS |
717 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
718 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), | |
719 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
720 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
721 | HID_ANY_ID) }, | |
401ca24f | 722 | { } |
723 | }; | |
724 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
725 | ||
401ca24f | 726 | static struct hid_driver sensor_hub_driver = { |
727 | .name = "hid-sensor-hub", | |
728 | .id_table = sensor_hub_devices, | |
729 | .probe = sensor_hub_probe, | |
730 | .remove = sensor_hub_remove, | |
731 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 732 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 733 | #ifdef CONFIG_PM |
734 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
735 | .resume = sensor_hub_resume, |
736 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 737 | #endif |
738 | }; | |
f425458e | 739 | module_hid_driver(sensor_hub_driver); |
401ca24f | 740 | |
741 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
742 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
743 | MODULE_LICENSE("GPL"); |