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); | |
162 | ||
163 | spin_lock(&pdata->dyn_callback_lock); | |
164 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
ca2ed12f SP |
165 | if (callback->usage_id == usage_id && |
166 | callback->hsdev == hsdev) { | |
401ca24f | 167 | spin_unlock(&pdata->dyn_callback_lock); |
168 | return -EINVAL; | |
169 | } | |
2b7c4b8e | 170 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 171 | if (!callback) { |
172 | spin_unlock(&pdata->dyn_callback_lock); | |
173 | return -ENOMEM; | |
174 | } | |
ca2ed12f | 175 | callback->hsdev = hsdev; |
401ca24f | 176 | callback->usage_callback = usage_callback; |
177 | callback->usage_id = usage_id; | |
178 | callback->priv = NULL; | |
179 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
180 | spin_unlock(&pdata->dyn_callback_lock); | |
181 | ||
182 | return 0; | |
183 | } | |
184 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
185 | ||
186 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
187 | u32 usage_id) | |
188 | { | |
189 | struct hid_sensor_hub_callbacks_list *callback; | |
190 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
191 | ||
192 | spin_lock(&pdata->dyn_callback_lock); | |
193 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
ca2ed12f SP |
194 | if (callback->usage_id == usage_id && |
195 | callback->hsdev == hsdev) { | |
401ca24f | 196 | list_del(&callback->list); |
197 | kfree(callback); | |
198 | break; | |
199 | } | |
200 | spin_unlock(&pdata->dyn_callback_lock); | |
201 | ||
202 | return 0; | |
203 | } | |
204 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); | |
205 | ||
206 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
207 | u32 field_index, s32 value) | |
208 | { | |
209 | struct hid_report *report; | |
5902fde1 | 210 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 211 | int ret = 0; |
212 | ||
401ca24f | 213 | mutex_lock(&data->mutex); |
214 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 215 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 216 | ret = -EINVAL; |
217 | goto done_proc; | |
218 | } | |
219 | hid_set_field(report->field[field_index], 0, value); | |
d8814272 | 220 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 221 | hid_hw_wait(hsdev->hdev); |
401ca24f | 222 | |
223 | done_proc: | |
224 | mutex_unlock(&data->mutex); | |
225 | ||
226 | return ret; | |
227 | } | |
228 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
229 | ||
230 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
231 | u32 field_index, s32 *value) | |
232 | { | |
233 | struct hid_report *report; | |
5902fde1 | 234 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 235 | int ret = 0; |
236 | ||
401ca24f | 237 | mutex_lock(&data->mutex); |
238 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 239 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 240 | report->field[field_index]->report_count < 1) { |
401ca24f | 241 | ret = -EINVAL; |
242 | goto done_proc; | |
243 | } | |
d8814272 | 244 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 245 | hid_hw_wait(hsdev->hdev); |
401ca24f | 246 | *value = report->field[field_index]->value[0]; |
247 | ||
248 | done_proc: | |
249 | mutex_unlock(&data->mutex); | |
250 | ||
251 | return ret; | |
252 | } | |
253 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
254 | ||
255 | ||
256 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
257 | u32 usage_id, | |
258 | u32 attr_usage_id, u32 report_id) | |
259 | { | |
5902fde1 | 260 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 261 | unsigned long flags; |
262 | struct hid_report *report; | |
263 | int ret_val = 0; | |
264 | ||
401ca24f | 265 | mutex_lock(&data->mutex); |
266 | memset(&data->pending, 0, sizeof(data->pending)); | |
267 | init_completion(&data->pending.ready); | |
268 | data->pending.usage_id = usage_id; | |
269 | data->pending.attr_usage_id = attr_usage_id; | |
270 | data->pending.raw_size = 0; | |
271 | ||
272 | spin_lock_irqsave(&data->lock, flags); | |
273 | data->pending.status = true; | |
f74346a0 | 274 | spin_unlock_irqrestore(&data->lock, flags); |
401ca24f | 275 | report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); |
f74346a0 | 276 | if (!report) |
401ca24f | 277 | goto err_free; |
f74346a0 | 278 | |
d8814272 | 279 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 280 | wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); |
281 | switch (data->pending.raw_size) { | |
282 | case 1: | |
283 | ret_val = *(u8 *)data->pending.raw_data; | |
284 | break; | |
285 | case 2: | |
286 | ret_val = *(u16 *)data->pending.raw_data; | |
287 | break; | |
288 | case 4: | |
289 | ret_val = *(u32 *)data->pending.raw_data; | |
290 | break; | |
291 | default: | |
292 | ret_val = 0; | |
293 | } | |
294 | kfree(data->pending.raw_data); | |
295 | ||
296 | err_free: | |
297 | data->pending.status = false; | |
298 | mutex_unlock(&data->mutex); | |
299 | ||
300 | return ret_val; | |
301 | } | |
302 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
303 | ||
e02cee48 SP |
304 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
305 | u32 report_id, int field_index, u32 usage_id) | |
306 | { | |
307 | struct hid_report *report; | |
308 | struct hid_field *field; | |
309 | int i; | |
310 | ||
311 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
312 | if (!report || (field_index >= report->maxfield)) | |
313 | goto done_proc; | |
314 | ||
315 | field = report->field[field_index]; | |
316 | for (i = 0; i < field->maxusage; ++i) { | |
317 | if (field->usage[i].hid == usage_id) | |
318 | return field->usage[i].usage_index; | |
319 | } | |
320 | ||
321 | done_proc: | |
322 | return -EINVAL; | |
323 | } | |
324 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); | |
325 | ||
401ca24f | 326 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
327 | u8 type, | |
328 | u32 usage_id, | |
329 | u32 attr_usage_id, | |
330 | struct hid_sensor_hub_attribute_info *info) | |
331 | { | |
332 | int ret = -1; | |
ca2ed12f | 333 | int i; |
401ca24f | 334 | struct hid_report *report; |
335 | struct hid_field *field; | |
336 | struct hid_report_enum *report_enum; | |
337 | struct hid_device *hdev = hsdev->hdev; | |
338 | ||
339 | /* Initialize with defaults */ | |
340 | info->usage_id = usage_id; | |
5902fde1 | 341 | info->attrib_id = attr_usage_id; |
401ca24f | 342 | info->report_id = -1; |
343 | info->index = -1; | |
344 | info->units = -1; | |
345 | info->unit_expo = -1; | |
346 | ||
401ca24f | 347 | report_enum = &hdev->report_enum[type]; |
348 | list_for_each_entry(report, &report_enum->report_list, list) { | |
349 | for (i = 0; i < report->maxfield; ++i) { | |
350 | field = report->field[i]; | |
ca2ed12f SP |
351 | if (field->maxusage) { |
352 | if (field->physical == usage_id && | |
353 | (field->logical == attr_usage_id || | |
354 | field->usage[0].hid == | |
355 | attr_usage_id) && | |
356 | (field->usage[0].collection_index >= | |
357 | hsdev->start_collection_index) && | |
358 | (field->usage[0].collection_index < | |
359 | hsdev->end_collection_index)) { | |
360 | ||
361 | sensor_hub_fill_attr_info(info, i, | |
362 | report->id, | |
363 | field); | |
364 | ret = 0; | |
365 | break; | |
401ca24f | 366 | } |
367 | } | |
401ca24f | 368 | } |
ca2ed12f | 369 | |
401ca24f | 370 | } |
371 | ||
401ca24f | 372 | return ret; |
373 | } | |
374 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
375 | ||
376 | #ifdef CONFIG_PM | |
377 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
378 | { | |
5902fde1 | 379 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 380 | struct hid_sensor_hub_callbacks_list *callback; |
381 | ||
382 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
383 | spin_lock(&pdata->dyn_callback_lock); | |
384 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { | |
385 | if (callback->usage_callback->suspend) | |
386 | callback->usage_callback->suspend( | |
ca2ed12f | 387 | callback->hsdev, callback->priv); |
401ca24f | 388 | } |
389 | spin_unlock(&pdata->dyn_callback_lock); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static int sensor_hub_resume(struct hid_device *hdev) | |
395 | { | |
5902fde1 | 396 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 397 | struct hid_sensor_hub_callbacks_list *callback; |
398 | ||
399 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
400 | spin_lock(&pdata->dyn_callback_lock); | |
401 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { | |
402 | if (callback->usage_callback->resume) | |
403 | callback->usage_callback->resume( | |
ca2ed12f | 404 | callback->hsdev, callback->priv); |
401ca24f | 405 | } |
406 | spin_unlock(&pdata->dyn_callback_lock); | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
412 | { | |
413 | return 0; | |
414 | } | |
415 | #endif | |
5902fde1 | 416 | |
401ca24f | 417 | /* |
418 | * Handle raw report as sent by device | |
419 | */ | |
420 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
421 | struct hid_report *report, u8 *raw_data, int size) | |
422 | { | |
423 | int i; | |
424 | u8 *ptr; | |
425 | int sz; | |
426 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
427 | unsigned long flags; | |
428 | struct hid_sensor_hub_callbacks *callback = NULL; | |
429 | struct hid_collection *collection = NULL; | |
430 | void *priv = NULL; | |
ca2ed12f | 431 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 432 | |
433 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
434 | report->id, size, report->type); | |
435 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
436 | if (report->type != HID_INPUT_REPORT) | |
437 | return 1; | |
438 | ||
439 | ptr = raw_data; | |
15261f6d | 440 | ptr++; /* Skip report id */ |
401ca24f | 441 | |
401ca24f | 442 | spin_lock_irqsave(&pdata->lock, flags); |
443 | ||
444 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 445 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
446 | i, report->field[i]->usage->collection_index, | |
447 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
448 | (report->field[i]->report_size * |
449 | report->field[i]->report_count)/8); | |
450 | sz = (report->field[i]->report_size * | |
451 | report->field[i]->report_count)/8; | |
401ca24f | 452 | if (pdata->pending.status && pdata->pending.attr_usage_id == |
453 | report->field[i]->usage->hid) { | |
454 | hid_dbg(hdev, "data was pending ...\n"); | |
7b0692f1 AS |
455 | pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); |
456 | if (pdata->pending.raw_data) | |
5902fde1 | 457 | pdata->pending.raw_size = sz; |
7b0692f1 | 458 | else |
401ca24f | 459 | pdata->pending.raw_size = 0; |
460 | complete(&pdata->pending.ready); | |
461 | } | |
462 | collection = &hdev->collection[ | |
463 | report->field[i]->usage->collection_index]; | |
464 | hid_dbg(hdev, "collection->usage %x\n", | |
465 | collection->usage); | |
ca2ed12f SP |
466 | |
467 | callback = sensor_hub_get_callback(hdev, | |
468 | report->field[i]->physical, | |
469 | report->field[i]->usage[0].collection_index, | |
470 | &hsdev, &priv); | |
471 | ||
401ca24f | 472 | if (callback && callback->capture_sample) { |
473 | if (report->field[i]->logical) | |
ca2ed12f | 474 | callback->capture_sample(hsdev, |
401ca24f | 475 | report->field[i]->logical, sz, ptr, |
476 | callback->pdev); | |
477 | else | |
ca2ed12f | 478 | callback->capture_sample(hsdev, |
401ca24f | 479 | report->field[i]->usage->hid, sz, ptr, |
480 | callback->pdev); | |
481 | } | |
482 | ptr += sz; | |
483 | } | |
484 | if (callback && collection && callback->send_event) | |
ca2ed12f | 485 | callback->send_event(hsdev, collection->usage, |
401ca24f | 486 | callback->pdev); |
487 | spin_unlock_irqrestore(&pdata->lock, flags); | |
488 | ||
401ca24f | 489 | return 1; |
490 | } | |
491 | ||
1df3a401 SP |
492 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
493 | { | |
494 | int ret = 0; | |
495 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
496 | ||
497 | mutex_lock(&data->mutex); | |
ca2ed12f | 498 | if (!data->ref_cnt) { |
1df3a401 SP |
499 | ret = hid_hw_open(hsdev->hdev); |
500 | if (ret) { | |
501 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
502 | mutex_unlock(&data->mutex); | |
503 | return ret; | |
504 | } | |
505 | } | |
ca2ed12f | 506 | data->ref_cnt++; |
1df3a401 SP |
507 | mutex_unlock(&data->mutex); |
508 | ||
509 | return ret; | |
510 | } | |
511 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
512 | ||
513 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
514 | { | |
515 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
516 | ||
517 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
518 | data->ref_cnt--; |
519 | if (!data->ref_cnt) | |
1df3a401 SP |
520 | hid_hw_close(hsdev->hdev); |
521 | mutex_unlock(&data->mutex); | |
522 | } | |
523 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
524 | ||
875e36f8 SP |
525 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
526 | unsigned int *rsize) | |
527 | { | |
528 | int index; | |
529 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
530 | unsigned char report_block[] = { | |
531 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
532 | unsigned char power_block[] = { | |
533 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
534 | ||
535 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
536 | hid_dbg(hdev, "No Enum quirks\n"); | |
537 | return rdesc; | |
538 | } | |
539 | ||
540 | /* Looks for power and report state usage id and force to 1 */ | |
541 | for (index = 0; index < *rsize; ++index) { | |
542 | if (((*rsize - index) > sizeof(report_block)) && | |
543 | !memcmp(&rdesc[index], report_block, | |
544 | sizeof(report_block))) { | |
545 | rdesc[index + 4] = 0x01; | |
546 | index += sizeof(report_block); | |
547 | } | |
548 | if (((*rsize - index) > sizeof(power_block)) && | |
549 | !memcmp(&rdesc[index], power_block, | |
550 | sizeof(power_block))) { | |
551 | rdesc[index + 4] = 0x01; | |
552 | index += sizeof(power_block); | |
553 | } | |
554 | } | |
555 | ||
556 | return rdesc; | |
557 | } | |
558 | ||
401ca24f | 559 | static int sensor_hub_probe(struct hid_device *hdev, |
560 | const struct hid_device_id *id) | |
561 | { | |
562 | int ret; | |
563 | struct sensor_hub_data *sd; | |
564 | int i; | |
565 | char *name; | |
401ca24f | 566 | int dev_cnt; |
ca2ed12f SP |
567 | struct hid_sensor_hub_device *hsdev; |
568 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
401ca24f | 569 | |
905cc199 | 570 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 571 | if (!sd) { |
572 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
573 | return -ENOMEM; | |
574 | } | |
ca2ed12f | 575 | |
401ca24f | 576 | hid_set_drvdata(hdev, sd); |
875e36f8 | 577 | sd->quirks = id->driver_data; |
ca2ed12f | 578 | |
401ca24f | 579 | spin_lock_init(&sd->lock); |
580 | spin_lock_init(&sd->dyn_callback_lock); | |
581 | mutex_init(&sd->mutex); | |
582 | ret = hid_parse(hdev); | |
583 | if (ret) { | |
584 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 585 | return ret; |
401ca24f | 586 | } |
401ca24f | 587 | INIT_LIST_HEAD(&hdev->inputs); |
588 | ||
401ca24f | 589 | ret = hid_hw_start(hdev, 0); |
590 | if (ret) { | |
591 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 592 | return ret; |
401ca24f | 593 | } |
401ca24f | 594 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
595 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 596 | |
ca2ed12f | 597 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 598 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
599 | hid_err(hdev, "Invalid Physical device count\n"); | |
600 | ret = -EINVAL; | |
1df3a401 | 601 | goto err_stop_hw; |
401ca24f | 602 | } |
603 | sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt * | |
604 | sizeof(struct mfd_cell), | |
605 | GFP_KERNEL); | |
606 | if (sd->hid_sensor_hub_client_devs == NULL) { | |
f2f13a68 | 607 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 608 | ret = -ENOMEM; |
1df3a401 | 609 | goto err_stop_hw; |
401ca24f | 610 | } |
ca2ed12f SP |
611 | |
612 | for (i = 0; i < hdev->maxcollection; ++i) { | |
613 | struct hid_collection *collection = &hdev->collection[i]; | |
614 | ||
615 | if (collection->type == HID_COLLECTION_PHYSICAL) { | |
616 | ||
617 | hsdev = kzalloc(sizeof(*hsdev), GFP_KERNEL); | |
618 | if (!hsdev) { | |
619 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
620 | ret = -ENOMEM; | |
621 | goto err_no_mem; | |
622 | } | |
623 | hsdev->hdev = hdev; | |
624 | hsdev->vendor_id = hdev->vendor; | |
625 | hsdev->product_id = hdev->product; | |
626 | hsdev->start_collection_index = i; | |
627 | if (last_hsdev) | |
628 | last_hsdev->end_collection_index = i; | |
629 | last_hsdev = hsdev; | |
401ca24f | 630 | name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x", |
ca2ed12f | 631 | collection->usage); |
5902fde1 | 632 | if (name == NULL) { |
f2f13a68 | 633 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 634 | ret = -ENOMEM; |
ca2ed12f | 635 | goto err_no_mem; |
401ca24f | 636 | } |
637 | sd->hid_sensor_hub_client_devs[ | |
ca2ed12f SP |
638 | sd->hid_sensor_client_cnt].id = |
639 | PLATFORM_DEVID_AUTO; | |
d81cae80 | 640 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 641 | sd->hid_sensor_client_cnt].name = name; |
642 | sd->hid_sensor_hub_client_devs[ | |
643 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 644 | hsdev; |
401ca24f | 645 | sd->hid_sensor_hub_client_devs[ |
646 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
647 | sizeof(*hsdev); |
648 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
649 | hsdev->start_collection_index); | |
401ca24f | 650 | sd->hid_sensor_client_cnt++; |
651 | } | |
652 | } | |
ca2ed12f SP |
653 | if (last_hsdev) |
654 | last_hsdev->end_collection_index = i; | |
655 | ||
401ca24f | 656 | ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, |
f45c69b1 | 657 | sd->hid_sensor_client_cnt, NULL, 0, NULL); |
401ca24f | 658 | if (ret < 0) |
ca2ed12f | 659 | goto err_no_mem; |
401ca24f | 660 | |
661 | return ret; | |
662 | ||
ca2ed12f SP |
663 | err_no_mem: |
664 | for (i = 0; i < sd->hid_sensor_client_cnt; ++i) { | |
401ca24f | 665 | kfree(sd->hid_sensor_hub_client_devs[i].name); |
ca2ed12f SP |
666 | kfree(sd->hid_sensor_hub_client_devs[i].platform_data); |
667 | } | |
401ca24f | 668 | kfree(sd->hid_sensor_hub_client_devs); |
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; | |
679 | int i; | |
680 | ||
681 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 682 | hid_hw_close(hdev); |
f2f13a68 | 683 | hid_hw_stop(hdev); |
401ca24f | 684 | spin_lock_irqsave(&data->lock, flags); |
685 | if (data->pending.status) | |
686 | complete(&data->pending.ready); | |
687 | spin_unlock_irqrestore(&data->lock, flags); | |
688 | mfd_remove_devices(&hdev->dev); | |
ca2ed12f | 689 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
401ca24f | 690 | kfree(data->hid_sensor_hub_client_devs[i].name); |
ca2ed12f SP |
691 | kfree(data->hid_sensor_hub_client_devs[i].platform_data); |
692 | } | |
401ca24f | 693 | kfree(data->hid_sensor_hub_client_devs); |
694 | hid_set_drvdata(hdev, NULL); | |
695 | mutex_destroy(&data->mutex); | |
401ca24f | 696 | } |
697 | ||
698 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 SP |
699 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
700 | USB_DEVICE_ID_INTEL_HID_SENSOR), | |
701 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
702 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
703 | USB_DEVICE_ID_INTEL_HID_SENSOR), | |
704 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed AP |
705 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
706 | USB_DEVICE_ID_STM_HID_SENSOR), | |
707 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
708 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
709 | HID_ANY_ID) }, | |
401ca24f | 710 | { } |
711 | }; | |
712 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
713 | ||
401ca24f | 714 | static struct hid_driver sensor_hub_driver = { |
715 | .name = "hid-sensor-hub", | |
716 | .id_table = sensor_hub_devices, | |
717 | .probe = sensor_hub_probe, | |
718 | .remove = sensor_hub_remove, | |
719 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 720 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 721 | #ifdef CONFIG_PM |
722 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
723 | .resume = sensor_hub_resume, |
724 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 725 | #endif |
726 | }; | |
f425458e | 727 | module_hid_driver(sensor_hub_driver); |
401ca24f | 728 | |
729 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
730 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
731 | MODULE_LICENSE("GPL"); |