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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); | |
ed119770 | 138 | unsigned long flags; |
401ca24f | 139 | |
ed119770 | 140 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 141 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
142 | if (callback->usage_id == usage_id && |
143 | (collection_index >= | |
144 | callback->hsdev->start_collection_index) && | |
145 | (collection_index < | |
146 | callback->hsdev->end_collection_index)) { | |
401ca24f | 147 | *priv = callback->priv; |
ca2ed12f | 148 | *hsdev = callback->hsdev; |
ed119770 SP |
149 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, |
150 | flags); | |
401ca24f | 151 | return callback->usage_callback; |
152 | } | |
ed119770 | 153 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 154 | |
155 | return NULL; | |
156 | } | |
157 | ||
158 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, | |
159 | u32 usage_id, | |
160 | struct hid_sensor_hub_callbacks *usage_callback) | |
161 | { | |
162 | struct hid_sensor_hub_callbacks_list *callback; | |
163 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 164 | unsigned long flags; |
401ca24f | 165 | |
0ccf091d | 166 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 167 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
168 | if (callback->usage_id == usage_id && |
169 | callback->hsdev == hsdev) { | |
0ccf091d | 170 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 171 | return -EINVAL; |
172 | } | |
2b7c4b8e | 173 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 174 | if (!callback) { |
0ccf091d | 175 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 176 | return -ENOMEM; |
177 | } | |
ca2ed12f | 178 | callback->hsdev = hsdev; |
401ca24f | 179 | callback->usage_callback = usage_callback; |
180 | callback->usage_id = usage_id; | |
181 | callback->priv = NULL; | |
182 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
0ccf091d | 183 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 184 | |
185 | return 0; | |
186 | } | |
187 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
188 | ||
189 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
190 | u32 usage_id) | |
191 | { | |
192 | struct hid_sensor_hub_callbacks_list *callback; | |
193 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 194 | unsigned long flags; |
401ca24f | 195 | |
0ccf091d | 196 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 197 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
198 | if (callback->usage_id == usage_id && |
199 | callback->hsdev == hsdev) { | |
401ca24f | 200 | list_del(&callback->list); |
201 | kfree(callback); | |
202 | break; | |
203 | } | |
0ccf091d | 204 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 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; | |
5902fde1 | 214 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 215 | int ret = 0; |
216 | ||
401ca24f | 217 | mutex_lock(&data->mutex); |
218 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 219 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 220 | ret = -EINVAL; |
221 | goto done_proc; | |
222 | } | |
223 | hid_set_field(report->field[field_index], 0, value); | |
d8814272 | 224 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 225 | hid_hw_wait(hsdev->hdev); |
401ca24f | 226 | |
227 | done_proc: | |
228 | mutex_unlock(&data->mutex); | |
229 | ||
230 | return ret; | |
231 | } | |
232 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
233 | ||
234 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
235 | u32 field_index, s32 *value) | |
236 | { | |
237 | struct hid_report *report; | |
5902fde1 | 238 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 239 | int ret = 0; |
240 | ||
401ca24f | 241 | mutex_lock(&data->mutex); |
242 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 243 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 244 | report->field[field_index]->report_count < 1) { |
401ca24f | 245 | ret = -EINVAL; |
246 | goto done_proc; | |
247 | } | |
d8814272 | 248 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 249 | hid_hw_wait(hsdev->hdev); |
401ca24f | 250 | *value = report->field[field_index]->value[0]; |
251 | ||
252 | done_proc: | |
253 | mutex_unlock(&data->mutex); | |
254 | ||
255 | return ret; | |
256 | } | |
257 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
258 | ||
259 | ||
260 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
261 | u32 usage_id, | |
262 | u32 attr_usage_id, u32 report_id) | |
263 | { | |
5902fde1 | 264 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 265 | unsigned long flags; |
266 | struct hid_report *report; | |
267 | int ret_val = 0; | |
268 | ||
401ca24f | 269 | mutex_lock(&data->mutex); |
270 | memset(&data->pending, 0, sizeof(data->pending)); | |
271 | init_completion(&data->pending.ready); | |
272 | data->pending.usage_id = usage_id; | |
273 | data->pending.attr_usage_id = attr_usage_id; | |
274 | data->pending.raw_size = 0; | |
275 | ||
276 | spin_lock_irqsave(&data->lock, flags); | |
277 | data->pending.status = true; | |
f74346a0 | 278 | spin_unlock_irqrestore(&data->lock, flags); |
401ca24f | 279 | report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); |
f74346a0 | 280 | if (!report) |
401ca24f | 281 | goto err_free; |
f74346a0 | 282 | |
d8814272 | 283 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 284 | wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); |
285 | switch (data->pending.raw_size) { | |
286 | case 1: | |
287 | ret_val = *(u8 *)data->pending.raw_data; | |
288 | break; | |
289 | case 2: | |
290 | ret_val = *(u16 *)data->pending.raw_data; | |
291 | break; | |
292 | case 4: | |
293 | ret_val = *(u32 *)data->pending.raw_data; | |
294 | break; | |
295 | default: | |
296 | ret_val = 0; | |
297 | } | |
298 | kfree(data->pending.raw_data); | |
299 | ||
300 | err_free: | |
301 | data->pending.status = false; | |
302 | mutex_unlock(&data->mutex); | |
303 | ||
304 | return ret_val; | |
305 | } | |
306 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
307 | ||
e02cee48 SP |
308 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
309 | u32 report_id, int field_index, u32 usage_id) | |
310 | { | |
311 | struct hid_report *report; | |
312 | struct hid_field *field; | |
313 | int i; | |
314 | ||
315 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
316 | if (!report || (field_index >= report->maxfield)) | |
317 | goto done_proc; | |
318 | ||
319 | field = report->field[field_index]; | |
320 | for (i = 0; i < field->maxusage; ++i) { | |
321 | if (field->usage[i].hid == usage_id) | |
322 | return field->usage[i].usage_index; | |
323 | } | |
324 | ||
325 | done_proc: | |
326 | return -EINVAL; | |
327 | } | |
328 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); | |
329 | ||
401ca24f | 330 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
331 | u8 type, | |
332 | u32 usage_id, | |
333 | u32 attr_usage_id, | |
334 | struct hid_sensor_hub_attribute_info *info) | |
335 | { | |
336 | int ret = -1; | |
ca2ed12f | 337 | int i; |
401ca24f | 338 | struct hid_report *report; |
339 | struct hid_field *field; | |
340 | struct hid_report_enum *report_enum; | |
341 | struct hid_device *hdev = hsdev->hdev; | |
342 | ||
343 | /* Initialize with defaults */ | |
344 | info->usage_id = usage_id; | |
5902fde1 | 345 | info->attrib_id = attr_usage_id; |
401ca24f | 346 | info->report_id = -1; |
347 | info->index = -1; | |
348 | info->units = -1; | |
349 | info->unit_expo = -1; | |
350 | ||
401ca24f | 351 | report_enum = &hdev->report_enum[type]; |
352 | list_for_each_entry(report, &report_enum->report_list, list) { | |
353 | for (i = 0; i < report->maxfield; ++i) { | |
354 | field = report->field[i]; | |
ca2ed12f SP |
355 | if (field->maxusage) { |
356 | if (field->physical == usage_id && | |
357 | (field->logical == attr_usage_id || | |
358 | field->usage[0].hid == | |
359 | attr_usage_id) && | |
360 | (field->usage[0].collection_index >= | |
361 | hsdev->start_collection_index) && | |
362 | (field->usage[0].collection_index < | |
363 | hsdev->end_collection_index)) { | |
364 | ||
365 | sensor_hub_fill_attr_info(info, i, | |
366 | report->id, | |
367 | field); | |
368 | ret = 0; | |
369 | break; | |
401ca24f | 370 | } |
371 | } | |
401ca24f | 372 | } |
ca2ed12f | 373 | |
401ca24f | 374 | } |
375 | ||
401ca24f | 376 | return ret; |
377 | } | |
378 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
379 | ||
380 | #ifdef CONFIG_PM | |
381 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
382 | { | |
5902fde1 | 383 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 384 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 385 | unsigned long flags; |
401ca24f | 386 | |
387 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
0ccf091d | 388 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 389 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
390 | if (callback->usage_callback->suspend) | |
391 | callback->usage_callback->suspend( | |
ca2ed12f | 392 | callback->hsdev, callback->priv); |
401ca24f | 393 | } |
0ccf091d | 394 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 395 | |
396 | return 0; | |
397 | } | |
398 | ||
399 | static int sensor_hub_resume(struct hid_device *hdev) | |
400 | { | |
5902fde1 | 401 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 402 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 403 | unsigned long flags; |
401ca24f | 404 | |
405 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
0ccf091d | 406 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 407 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
408 | if (callback->usage_callback->resume) | |
409 | callback->usage_callback->resume( | |
ca2ed12f | 410 | callback->hsdev, callback->priv); |
401ca24f | 411 | } |
0ccf091d | 412 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 413 | |
414 | return 0; | |
415 | } | |
416 | ||
417 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
418 | { | |
419 | return 0; | |
420 | } | |
421 | #endif | |
5902fde1 | 422 | |
401ca24f | 423 | /* |
424 | * Handle raw report as sent by device | |
425 | */ | |
426 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
427 | struct hid_report *report, u8 *raw_data, int size) | |
428 | { | |
429 | int i; | |
430 | u8 *ptr; | |
431 | int sz; | |
432 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
433 | unsigned long flags; | |
434 | struct hid_sensor_hub_callbacks *callback = NULL; | |
435 | struct hid_collection *collection = NULL; | |
436 | void *priv = NULL; | |
ca2ed12f | 437 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 438 | |
439 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
440 | report->id, size, report->type); | |
441 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
442 | if (report->type != HID_INPUT_REPORT) | |
443 | return 1; | |
444 | ||
445 | ptr = raw_data; | |
15261f6d | 446 | ptr++; /* Skip report id */ |
401ca24f | 447 | |
401ca24f | 448 | spin_lock_irqsave(&pdata->lock, flags); |
449 | ||
450 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 451 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
452 | i, report->field[i]->usage->collection_index, | |
453 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
454 | (report->field[i]->report_size * |
455 | report->field[i]->report_count)/8); | |
456 | sz = (report->field[i]->report_size * | |
457 | report->field[i]->report_count)/8; | |
401ca24f | 458 | if (pdata->pending.status && pdata->pending.attr_usage_id == |
459 | report->field[i]->usage->hid) { | |
460 | hid_dbg(hdev, "data was pending ...\n"); | |
7b0692f1 AS |
461 | pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); |
462 | if (pdata->pending.raw_data) | |
5902fde1 | 463 | pdata->pending.raw_size = sz; |
7b0692f1 | 464 | else |
401ca24f | 465 | pdata->pending.raw_size = 0; |
466 | complete(&pdata->pending.ready); | |
467 | } | |
468 | collection = &hdev->collection[ | |
469 | report->field[i]->usage->collection_index]; | |
470 | hid_dbg(hdev, "collection->usage %x\n", | |
471 | collection->usage); | |
ca2ed12f SP |
472 | |
473 | callback = sensor_hub_get_callback(hdev, | |
474 | report->field[i]->physical, | |
475 | report->field[i]->usage[0].collection_index, | |
476 | &hsdev, &priv); | |
477 | ||
401ca24f | 478 | if (callback && callback->capture_sample) { |
479 | if (report->field[i]->logical) | |
ca2ed12f | 480 | callback->capture_sample(hsdev, |
401ca24f | 481 | report->field[i]->logical, sz, ptr, |
482 | callback->pdev); | |
483 | else | |
ca2ed12f | 484 | callback->capture_sample(hsdev, |
401ca24f | 485 | report->field[i]->usage->hid, sz, ptr, |
486 | callback->pdev); | |
487 | } | |
488 | ptr += sz; | |
489 | } | |
490 | if (callback && collection && callback->send_event) | |
ca2ed12f | 491 | callback->send_event(hsdev, collection->usage, |
401ca24f | 492 | callback->pdev); |
493 | spin_unlock_irqrestore(&pdata->lock, flags); | |
494 | ||
401ca24f | 495 | return 1; |
496 | } | |
497 | ||
1df3a401 SP |
498 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
499 | { | |
500 | int ret = 0; | |
501 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
502 | ||
503 | mutex_lock(&data->mutex); | |
ca2ed12f | 504 | if (!data->ref_cnt) { |
1df3a401 SP |
505 | ret = hid_hw_open(hsdev->hdev); |
506 | if (ret) { | |
507 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
508 | mutex_unlock(&data->mutex); | |
509 | return ret; | |
510 | } | |
511 | } | |
ca2ed12f | 512 | data->ref_cnt++; |
1df3a401 SP |
513 | mutex_unlock(&data->mutex); |
514 | ||
515 | return ret; | |
516 | } | |
517 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
518 | ||
519 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
520 | { | |
521 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
522 | ||
523 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
524 | data->ref_cnt--; |
525 | if (!data->ref_cnt) | |
1df3a401 SP |
526 | hid_hw_close(hsdev->hdev); |
527 | mutex_unlock(&data->mutex); | |
528 | } | |
529 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
530 | ||
875e36f8 SP |
531 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
532 | unsigned int *rsize) | |
533 | { | |
534 | int index; | |
535 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
536 | unsigned char report_block[] = { | |
537 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
538 | unsigned char power_block[] = { | |
539 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
540 | ||
541 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
542 | hid_dbg(hdev, "No Enum quirks\n"); | |
543 | return rdesc; | |
544 | } | |
545 | ||
546 | /* Looks for power and report state usage id and force to 1 */ | |
547 | for (index = 0; index < *rsize; ++index) { | |
548 | if (((*rsize - index) > sizeof(report_block)) && | |
549 | !memcmp(&rdesc[index], report_block, | |
550 | sizeof(report_block))) { | |
551 | rdesc[index + 4] = 0x01; | |
552 | index += sizeof(report_block); | |
553 | } | |
554 | if (((*rsize - index) > sizeof(power_block)) && | |
555 | !memcmp(&rdesc[index], power_block, | |
556 | sizeof(power_block))) { | |
557 | rdesc[index + 4] = 0x01; | |
558 | index += sizeof(power_block); | |
559 | } | |
560 | } | |
561 | ||
562 | return rdesc; | |
563 | } | |
564 | ||
401ca24f | 565 | static int sensor_hub_probe(struct hid_device *hdev, |
566 | const struct hid_device_id *id) | |
567 | { | |
568 | int ret; | |
569 | struct sensor_hub_data *sd; | |
570 | int i; | |
571 | char *name; | |
401ca24f | 572 | int dev_cnt; |
ca2ed12f SP |
573 | struct hid_sensor_hub_device *hsdev; |
574 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
401ca24f | 575 | |
905cc199 | 576 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 577 | if (!sd) { |
578 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
579 | return -ENOMEM; | |
580 | } | |
ca2ed12f | 581 | |
401ca24f | 582 | hid_set_drvdata(hdev, sd); |
875e36f8 | 583 | sd->quirks = id->driver_data; |
ca2ed12f | 584 | |
401ca24f | 585 | spin_lock_init(&sd->lock); |
586 | spin_lock_init(&sd->dyn_callback_lock); | |
587 | mutex_init(&sd->mutex); | |
588 | ret = hid_parse(hdev); | |
589 | if (ret) { | |
590 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 591 | return ret; |
401ca24f | 592 | } |
401ca24f | 593 | INIT_LIST_HEAD(&hdev->inputs); |
594 | ||
401ca24f | 595 | ret = hid_hw_start(hdev, 0); |
596 | if (ret) { | |
597 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 598 | return ret; |
401ca24f | 599 | } |
401ca24f | 600 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
601 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 602 | |
ca2ed12f | 603 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 604 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
605 | hid_err(hdev, "Invalid Physical device count\n"); | |
606 | ret = -EINVAL; | |
1df3a401 | 607 | goto err_stop_hw; |
401ca24f | 608 | } |
5be5db24 HS |
609 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
610 | sizeof(struct mfd_cell), | |
611 | GFP_KERNEL); | |
401ca24f | 612 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 613 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 614 | ret = -ENOMEM; |
1df3a401 | 615 | goto err_stop_hw; |
401ca24f | 616 | } |
ca2ed12f SP |
617 | |
618 | for (i = 0; i < hdev->maxcollection; ++i) { | |
619 | struct hid_collection *collection = &hdev->collection[i]; | |
620 | ||
621 | if (collection->type == HID_COLLECTION_PHYSICAL) { | |
622 | ||
5be5db24 HS |
623 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
624 | GFP_KERNEL); | |
ca2ed12f SP |
625 | if (!hsdev) { |
626 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
627 | ret = -ENOMEM; | |
5be5db24 | 628 | goto err_stop_hw; |
ca2ed12f SP |
629 | } |
630 | hsdev->hdev = hdev; | |
631 | hsdev->vendor_id = hdev->vendor; | |
632 | hsdev->product_id = hdev->product; | |
633 | hsdev->start_collection_index = i; | |
634 | if (last_hsdev) | |
635 | last_hsdev->end_collection_index = i; | |
636 | last_hsdev = hsdev; | |
5be5db24 HS |
637 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
638 | "HID-SENSOR-%x", | |
639 | collection->usage); | |
5902fde1 | 640 | if (name == NULL) { |
f2f13a68 | 641 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 642 | ret = -ENOMEM; |
5be5db24 | 643 | goto err_stop_hw; |
401ca24f | 644 | } |
d81cae80 | 645 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 646 | sd->hid_sensor_client_cnt].name = name; |
647 | sd->hid_sensor_hub_client_devs[ | |
648 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 649 | hsdev; |
401ca24f | 650 | sd->hid_sensor_hub_client_devs[ |
651 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
652 | sizeof(*hsdev); |
653 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
654 | hsdev->start_collection_index); | |
401ca24f | 655 | sd->hid_sensor_client_cnt++; |
656 | } | |
657 | } | |
ca2ed12f SP |
658 | if (last_hsdev) |
659 | last_hsdev->end_collection_index = i; | |
660 | ||
16b5fe29 JH |
661 | ret = mfd_add_hotplug_devices(&hdev->dev, |
662 | sd->hid_sensor_hub_client_devs, | |
663 | sd->hid_sensor_client_cnt); | |
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"); |