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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); | |
ed119770 | 119 | unsigned long flags; |
401ca24f | 120 | |
ed119770 | 121 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 122 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
cb67126f SP |
123 | if ((callback->usage_id == usage_id || |
124 | callback->usage_id == HID_USAGE_SENSOR_COLLECTION) && | |
ca2ed12f SP |
125 | (collection_index >= |
126 | callback->hsdev->start_collection_index) && | |
127 | (collection_index < | |
128 | callback->hsdev->end_collection_index)) { | |
401ca24f | 129 | *priv = callback->priv; |
ca2ed12f | 130 | *hsdev = callback->hsdev; |
ed119770 SP |
131 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, |
132 | flags); | |
401ca24f | 133 | return callback->usage_callback; |
134 | } | |
ed119770 | 135 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 136 | |
137 | return NULL; | |
138 | } | |
139 | ||
140 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, | |
141 | u32 usage_id, | |
142 | struct hid_sensor_hub_callbacks *usage_callback) | |
143 | { | |
144 | struct hid_sensor_hub_callbacks_list *callback; | |
145 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 146 | unsigned long flags; |
401ca24f | 147 | |
0ccf091d | 148 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 149 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
150 | if (callback->usage_id == usage_id && |
151 | callback->hsdev == hsdev) { | |
0ccf091d | 152 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 153 | return -EINVAL; |
154 | } | |
2b7c4b8e | 155 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 156 | if (!callback) { |
0ccf091d | 157 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 158 | return -ENOMEM; |
159 | } | |
ca2ed12f | 160 | callback->hsdev = hsdev; |
401ca24f | 161 | callback->usage_callback = usage_callback; |
162 | callback->usage_id = usage_id; | |
163 | callback->priv = NULL; | |
cb67126f SP |
164 | /* |
165 | * If there is a handler registered for the collection type, then | |
166 | * it will handle all reports for sensors in this collection. If | |
167 | * there is also an individual sensor handler registration, then | |
168 | * we want to make sure that the reports are directed to collection | |
169 | * handler, as this may be a fusion sensor. So add collection handlers | |
170 | * to the beginning of the list, so that they are matched first. | |
171 | */ | |
172 | if (usage_id == HID_USAGE_SENSOR_COLLECTION) | |
173 | list_add(&callback->list, &pdata->dyn_callback_list); | |
174 | else | |
175 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
0ccf091d | 176 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 177 | |
178 | return 0; | |
179 | } | |
180 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
181 | ||
182 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
183 | u32 usage_id) | |
184 | { | |
185 | struct hid_sensor_hub_callbacks_list *callback; | |
186 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 187 | unsigned long flags; |
401ca24f | 188 | |
0ccf091d | 189 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 190 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
191 | if (callback->usage_id == usage_id && |
192 | callback->hsdev == hsdev) { | |
401ca24f | 193 | list_del(&callback->list); |
194 | kfree(callback); | |
195 | break; | |
196 | } | |
0ccf091d | 197 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 198 | |
199 | return 0; | |
200 | } | |
201 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); | |
202 | ||
203 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
3950e033 | 204 | u32 field_index, int buffer_size, void *buffer) |
401ca24f | 205 | { |
206 | struct hid_report *report; | |
5902fde1 | 207 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
3950e033 SP |
208 | __s32 *buf32 = buffer; |
209 | int i = 0; | |
210 | int remaining_bytes; | |
211 | __s32 value; | |
401ca24f | 212 | int ret = 0; |
213 | ||
401ca24f | 214 | mutex_lock(&data->mutex); |
215 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 216 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 217 | ret = -EINVAL; |
218 | goto done_proc; | |
219 | } | |
3950e033 | 220 | |
8d43b49e NP |
221 | remaining_bytes = buffer_size % sizeof(__s32); |
222 | buffer_size = buffer_size / sizeof(__s32); | |
3950e033 SP |
223 | if (buffer_size) { |
224 | for (i = 0; i < buffer_size; ++i) { | |
225 | hid_set_field(report->field[field_index], i, | |
62fad137 | 226 | (__force __s32)cpu_to_le32(*buf32)); |
3950e033 SP |
227 | ++buf32; |
228 | } | |
229 | } | |
230 | if (remaining_bytes) { | |
231 | value = 0; | |
232 | memcpy(&value, (u8 *)buf32, remaining_bytes); | |
233 | hid_set_field(report->field[field_index], i, | |
62fad137 | 234 | (__force __s32)cpu_to_le32(value)); |
3950e033 | 235 | } |
d8814272 | 236 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 237 | hid_hw_wait(hsdev->hdev); |
401ca24f | 238 | |
239 | done_proc: | |
240 | mutex_unlock(&data->mutex); | |
241 | ||
242 | return ret; | |
243 | } | |
244 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
245 | ||
246 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
6adc83fc | 247 | u32 field_index, int buffer_size, void *buffer) |
401ca24f | 248 | { |
249 | struct hid_report *report; | |
5902fde1 | 250 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
6adc83fc | 251 | int report_size; |
401ca24f | 252 | int ret = 0; |
253 | ||
401ca24f | 254 | mutex_lock(&data->mutex); |
255 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 256 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 257 | report->field[field_index]->report_count < 1) { |
401ca24f | 258 | ret = -EINVAL; |
259 | goto done_proc; | |
260 | } | |
d8814272 | 261 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 262 | hid_hw_wait(hsdev->hdev); |
6adc83fc SP |
263 | |
264 | /* calculate number of bytes required to read this field */ | |
265 | report_size = DIV_ROUND_UP(report->field[field_index]->report_size, | |
266 | 8) * | |
267 | report->field[field_index]->report_count; | |
268 | if (!report_size) { | |
269 | ret = -EINVAL; | |
270 | goto done_proc; | |
271 | } | |
272 | ret = min(report_size, buffer_size); | |
273 | memcpy(buffer, report->field[field_index]->value, ret); | |
401ca24f | 274 | |
275 | done_proc: | |
276 | mutex_unlock(&data->mutex); | |
277 | ||
278 | return ret; | |
279 | } | |
280 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
281 | ||
282 | ||
283 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
284 | u32 usage_id, | |
b3f4737d SP |
285 | u32 attr_usage_id, u32 report_id, |
286 | enum sensor_hub_read_flags flag) | |
401ca24f | 287 | { |
5902fde1 | 288 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 289 | unsigned long flags; |
290 | struct hid_report *report; | |
291 | int ret_val = 0; | |
292 | ||
b3f4737d SP |
293 | report = sensor_hub_report(report_id, hsdev->hdev, |
294 | HID_INPUT_REPORT); | |
f74346a0 | 295 | if (!report) |
b3f4737d | 296 | return -EINVAL; |
f74346a0 | 297 | |
2d94e522 | 298 | mutex_lock(hsdev->mutex_ptr); |
b3f4737d SP |
299 | if (flag == SENSOR_HUB_SYNC) { |
300 | memset(&hsdev->pending, 0, sizeof(hsdev->pending)); | |
301 | init_completion(&hsdev->pending.ready); | |
302 | hsdev->pending.usage_id = usage_id; | |
303 | hsdev->pending.attr_usage_id = attr_usage_id; | |
304 | hsdev->pending.raw_size = 0; | |
305 | ||
306 | spin_lock_irqsave(&data->lock, flags); | |
307 | hsdev->pending.status = true; | |
308 | spin_unlock_irqrestore(&data->lock, flags); | |
401ca24f | 309 | } |
e651a1da | 310 | mutex_lock(&data->mutex); |
d8814272 | 311 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 312 | mutex_unlock(&data->mutex); |
b3f4737d SP |
313 | if (flag == SENSOR_HUB_SYNC) { |
314 | wait_for_completion_interruptible_timeout( | |
315 | &hsdev->pending.ready, HZ*5); | |
316 | switch (hsdev->pending.raw_size) { | |
317 | case 1: | |
318 | ret_val = *(u8 *)hsdev->pending.raw_data; | |
319 | break; | |
320 | case 2: | |
321 | ret_val = *(u16 *)hsdev->pending.raw_data; | |
322 | break; | |
323 | case 4: | |
324 | ret_val = *(u32 *)hsdev->pending.raw_data; | |
325 | break; | |
326 | default: | |
327 | ret_val = 0; | |
328 | } | |
329 | kfree(hsdev->pending.raw_data); | |
330 | hsdev->pending.status = false; | |
401ca24f | 331 | } |
2d94e522 | 332 | mutex_unlock(hsdev->mutex_ptr); |
401ca24f | 333 | |
334 | return ret_val; | |
335 | } | |
336 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
337 | ||
e02cee48 SP |
338 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
339 | u32 report_id, int field_index, u32 usage_id) | |
340 | { | |
341 | struct hid_report *report; | |
342 | struct hid_field *field; | |
343 | int i; | |
344 | ||
345 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
346 | if (!report || (field_index >= report->maxfield)) | |
347 | goto done_proc; | |
348 | ||
349 | field = report->field[field_index]; | |
350 | for (i = 0; i < field->maxusage; ++i) { | |
351 | if (field->usage[i].hid == usage_id) | |
352 | return field->usage[i].usage_index; | |
353 | } | |
354 | ||
355 | done_proc: | |
356 | return -EINVAL; | |
357 | } | |
358 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); | |
359 | ||
401ca24f | 360 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
361 | u8 type, | |
362 | u32 usage_id, | |
363 | u32 attr_usage_id, | |
364 | struct hid_sensor_hub_attribute_info *info) | |
365 | { | |
366 | int ret = -1; | |
ca2ed12f | 367 | int i; |
401ca24f | 368 | struct hid_report *report; |
369 | struct hid_field *field; | |
370 | struct hid_report_enum *report_enum; | |
371 | struct hid_device *hdev = hsdev->hdev; | |
372 | ||
373 | /* Initialize with defaults */ | |
374 | info->usage_id = usage_id; | |
5902fde1 | 375 | info->attrib_id = attr_usage_id; |
401ca24f | 376 | info->report_id = -1; |
377 | info->index = -1; | |
378 | info->units = -1; | |
379 | info->unit_expo = -1; | |
380 | ||
401ca24f | 381 | report_enum = &hdev->report_enum[type]; |
382 | list_for_each_entry(report, &report_enum->report_list, list) { | |
383 | for (i = 0; i < report->maxfield; ++i) { | |
384 | field = report->field[i]; | |
ca2ed12f SP |
385 | if (field->maxusage) { |
386 | if (field->physical == usage_id && | |
387 | (field->logical == attr_usage_id || | |
388 | field->usage[0].hid == | |
389 | attr_usage_id) && | |
390 | (field->usage[0].collection_index >= | |
391 | hsdev->start_collection_index) && | |
392 | (field->usage[0].collection_index < | |
393 | hsdev->end_collection_index)) { | |
394 | ||
395 | sensor_hub_fill_attr_info(info, i, | |
396 | report->id, | |
397 | field); | |
398 | ret = 0; | |
399 | break; | |
401ca24f | 400 | } |
401 | } | |
401ca24f | 402 | } |
ca2ed12f | 403 | |
401ca24f | 404 | } |
405 | ||
401ca24f | 406 | return ret; |
407 | } | |
408 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
409 | ||
410 | #ifdef CONFIG_PM | |
411 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
412 | { | |
5902fde1 | 413 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 414 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 415 | unsigned long flags; |
401ca24f | 416 | |
417 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
0ccf091d | 418 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 419 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
420 | if (callback->usage_callback->suspend) | |
421 | callback->usage_callback->suspend( | |
ca2ed12f | 422 | callback->hsdev, callback->priv); |
401ca24f | 423 | } |
0ccf091d | 424 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 425 | |
426 | return 0; | |
427 | } | |
428 | ||
429 | static int sensor_hub_resume(struct hid_device *hdev) | |
430 | { | |
5902fde1 | 431 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 432 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 433 | unsigned long flags; |
401ca24f | 434 | |
435 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
0ccf091d | 436 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 437 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
438 | if (callback->usage_callback->resume) | |
439 | callback->usage_callback->resume( | |
ca2ed12f | 440 | callback->hsdev, callback->priv); |
401ca24f | 441 | } |
0ccf091d | 442 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 443 | |
444 | return 0; | |
445 | } | |
446 | ||
447 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
448 | { | |
449 | return 0; | |
450 | } | |
451 | #endif | |
5902fde1 | 452 | |
401ca24f | 453 | /* |
454 | * Handle raw report as sent by device | |
455 | */ | |
456 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
457 | struct hid_report *report, u8 *raw_data, int size) | |
458 | { | |
459 | int i; | |
460 | u8 *ptr; | |
461 | int sz; | |
462 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
463 | unsigned long flags; | |
464 | struct hid_sensor_hub_callbacks *callback = NULL; | |
465 | struct hid_collection *collection = NULL; | |
466 | void *priv = NULL; | |
ca2ed12f | 467 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 468 | |
469 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
470 | report->id, size, report->type); | |
471 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
472 | if (report->type != HID_INPUT_REPORT) | |
473 | return 1; | |
474 | ||
475 | ptr = raw_data; | |
15261f6d | 476 | ptr++; /* Skip report id */ |
401ca24f | 477 | |
401ca24f | 478 | spin_lock_irqsave(&pdata->lock, flags); |
479 | ||
480 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 481 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
482 | i, report->field[i]->usage->collection_index, | |
483 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
484 | (report->field[i]->report_size * |
485 | report->field[i]->report_count)/8); | |
486 | sz = (report->field[i]->report_size * | |
487 | report->field[i]->report_count)/8; | |
401ca24f | 488 | collection = &hdev->collection[ |
489 | report->field[i]->usage->collection_index]; | |
490 | hid_dbg(hdev, "collection->usage %x\n", | |
491 | collection->usage); | |
ca2ed12f SP |
492 | |
493 | callback = sensor_hub_get_callback(hdev, | |
494 | report->field[i]->physical, | |
495 | report->field[i]->usage[0].collection_index, | |
496 | &hsdev, &priv); | |
e651a1da SP |
497 | if (!callback) { |
498 | ptr += sz; | |
499 | continue; | |
500 | } | |
eb964833 SP |
501 | if (hsdev->pending.status && (hsdev->pending.attr_usage_id == |
502 | report->field[i]->usage->hid || | |
503 | hsdev->pending.attr_usage_id == | |
504 | report->field[i]->logical)) { | |
e651a1da SP |
505 | hid_dbg(hdev, "data was pending ...\n"); |
506 | hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); | |
507 | if (hsdev->pending.raw_data) | |
508 | hsdev->pending.raw_size = sz; | |
509 | else | |
510 | hsdev->pending.raw_size = 0; | |
511 | complete(&hsdev->pending.ready); | |
512 | } | |
513 | if (callback->capture_sample) { | |
401ca24f | 514 | if (report->field[i]->logical) |
ca2ed12f | 515 | callback->capture_sample(hsdev, |
401ca24f | 516 | report->field[i]->logical, sz, ptr, |
517 | callback->pdev); | |
518 | else | |
ca2ed12f | 519 | callback->capture_sample(hsdev, |
401ca24f | 520 | report->field[i]->usage->hid, sz, ptr, |
521 | callback->pdev); | |
522 | } | |
523 | ptr += sz; | |
524 | } | |
525 | if (callback && collection && callback->send_event) | |
ca2ed12f | 526 | callback->send_event(hsdev, collection->usage, |
401ca24f | 527 | callback->pdev); |
528 | spin_unlock_irqrestore(&pdata->lock, flags); | |
529 | ||
401ca24f | 530 | return 1; |
531 | } | |
532 | ||
1df3a401 SP |
533 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
534 | { | |
535 | int ret = 0; | |
536 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
537 | ||
538 | mutex_lock(&data->mutex); | |
ca2ed12f | 539 | if (!data->ref_cnt) { |
1df3a401 SP |
540 | ret = hid_hw_open(hsdev->hdev); |
541 | if (ret) { | |
542 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
543 | mutex_unlock(&data->mutex); | |
544 | return ret; | |
545 | } | |
546 | } | |
ca2ed12f | 547 | data->ref_cnt++; |
1df3a401 SP |
548 | mutex_unlock(&data->mutex); |
549 | ||
550 | return ret; | |
551 | } | |
552 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
553 | ||
554 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
555 | { | |
556 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
557 | ||
558 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
559 | data->ref_cnt--; |
560 | if (!data->ref_cnt) | |
1df3a401 SP |
561 | hid_hw_close(hsdev->hdev); |
562 | mutex_unlock(&data->mutex); | |
563 | } | |
564 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
565 | ||
875e36f8 SP |
566 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
567 | unsigned int *rsize) | |
568 | { | |
569 | int index; | |
570 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
571 | unsigned char report_block[] = { | |
572 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
573 | unsigned char power_block[] = { | |
574 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
575 | ||
576 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
577 | hid_dbg(hdev, "No Enum quirks\n"); | |
578 | return rdesc; | |
579 | } | |
580 | ||
581 | /* Looks for power and report state usage id and force to 1 */ | |
582 | for (index = 0; index < *rsize; ++index) { | |
583 | if (((*rsize - index) > sizeof(report_block)) && | |
584 | !memcmp(&rdesc[index], report_block, | |
585 | sizeof(report_block))) { | |
586 | rdesc[index + 4] = 0x01; | |
587 | index += sizeof(report_block); | |
588 | } | |
589 | if (((*rsize - index) > sizeof(power_block)) && | |
590 | !memcmp(&rdesc[index], power_block, | |
591 | sizeof(power_block))) { | |
592 | rdesc[index + 4] = 0x01; | |
593 | index += sizeof(power_block); | |
594 | } | |
595 | } | |
596 | ||
9fe8ecca FL |
597 | /* Checks if the report descriptor of Thinkpad Helix 2 has a logical |
598 | * minimum for magnetic flux axis greater than the maximum */ | |
599 | if (hdev->product == USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA && | |
600 | *rsize == 2558 && rdesc[913] == 0x17 && rdesc[914] == 0x40 && | |
601 | rdesc[915] == 0x81 && rdesc[916] == 0x08 && | |
602 | rdesc[917] == 0x00 && rdesc[918] == 0x27 && | |
603 | rdesc[921] == 0x07 && rdesc[922] == 0x00) { | |
604 | /* Sets negative logical minimum for mag x, y and z */ | |
605 | rdesc[914] = rdesc[935] = rdesc[956] = 0xc0; | |
606 | rdesc[915] = rdesc[936] = rdesc[957] = 0x7e; | |
607 | rdesc[916] = rdesc[937] = rdesc[958] = 0xf7; | |
608 | rdesc[917] = rdesc[938] = rdesc[959] = 0xff; | |
609 | } | |
610 | ||
875e36f8 SP |
611 | return rdesc; |
612 | } | |
613 | ||
401ca24f | 614 | static int sensor_hub_probe(struct hid_device *hdev, |
615 | const struct hid_device_id *id) | |
616 | { | |
617 | int ret; | |
618 | struct sensor_hub_data *sd; | |
619 | int i; | |
620 | char *name; | |
401ca24f | 621 | int dev_cnt; |
ca2ed12f SP |
622 | struct hid_sensor_hub_device *hsdev; |
623 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
cb67126f | 624 | struct hid_sensor_hub_device *collection_hsdev = NULL; |
401ca24f | 625 | |
905cc199 | 626 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 627 | if (!sd) { |
628 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
629 | return -ENOMEM; | |
630 | } | |
ca2ed12f | 631 | |
401ca24f | 632 | hid_set_drvdata(hdev, sd); |
875e36f8 | 633 | sd->quirks = id->driver_data; |
ca2ed12f | 634 | |
401ca24f | 635 | spin_lock_init(&sd->lock); |
636 | spin_lock_init(&sd->dyn_callback_lock); | |
637 | mutex_init(&sd->mutex); | |
638 | ret = hid_parse(hdev); | |
639 | if (ret) { | |
640 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 641 | return ret; |
401ca24f | 642 | } |
401ca24f | 643 | INIT_LIST_HEAD(&hdev->inputs); |
644 | ||
401ca24f | 645 | ret = hid_hw_start(hdev, 0); |
646 | if (ret) { | |
647 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 648 | return ret; |
401ca24f | 649 | } |
401ca24f | 650 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
651 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 652 | |
ca2ed12f | 653 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 654 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
655 | hid_err(hdev, "Invalid Physical device count\n"); | |
656 | ret = -EINVAL; | |
1df3a401 | 657 | goto err_stop_hw; |
401ca24f | 658 | } |
5be5db24 HS |
659 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
660 | sizeof(struct mfd_cell), | |
661 | GFP_KERNEL); | |
401ca24f | 662 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 663 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
636a89d4 JS |
664 | ret = -ENOMEM; |
665 | goto err_stop_hw; | |
401ca24f | 666 | } |
ca2ed12f SP |
667 | |
668 | for (i = 0; i < hdev->maxcollection; ++i) { | |
669 | struct hid_collection *collection = &hdev->collection[i]; | |
670 | ||
cb67126f SP |
671 | if (collection->type == HID_COLLECTION_PHYSICAL || |
672 | collection->type == HID_COLLECTION_APPLICATION) { | |
ca2ed12f | 673 | |
5be5db24 HS |
674 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
675 | GFP_KERNEL); | |
ca2ed12f SP |
676 | if (!hsdev) { |
677 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
678 | ret = -ENOMEM; | |
5be5db24 | 679 | goto err_stop_hw; |
ca2ed12f SP |
680 | } |
681 | hsdev->hdev = hdev; | |
682 | hsdev->vendor_id = hdev->vendor; | |
683 | hsdev->product_id = hdev->product; | |
e651a1da | 684 | hsdev->usage = collection->usage; |
2d94e522 SP |
685 | hsdev->mutex_ptr = devm_kzalloc(&hdev->dev, |
686 | sizeof(struct mutex), | |
687 | GFP_KERNEL); | |
688 | if (!hsdev->mutex_ptr) { | |
689 | ret = -ENOMEM; | |
690 | goto err_stop_hw; | |
691 | } | |
692 | mutex_init(hsdev->mutex_ptr); | |
ca2ed12f SP |
693 | hsdev->start_collection_index = i; |
694 | if (last_hsdev) | |
695 | last_hsdev->end_collection_index = i; | |
696 | last_hsdev = hsdev; | |
5be5db24 HS |
697 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
698 | "HID-SENSOR-%x", | |
699 | collection->usage); | |
5902fde1 | 700 | if (name == NULL) { |
f2f13a68 | 701 | hid_err(hdev, "Failed MFD device name\n"); |
636a89d4 JS |
702 | ret = -ENOMEM; |
703 | goto err_stop_hw; | |
401ca24f | 704 | } |
d81cae80 | 705 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 706 | sd->hid_sensor_client_cnt].name = name; |
707 | sd->hid_sensor_hub_client_devs[ | |
708 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 709 | hsdev; |
401ca24f | 710 | sd->hid_sensor_hub_client_devs[ |
711 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
712 | sizeof(*hsdev); |
713 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
714 | hsdev->start_collection_index); | |
401ca24f | 715 | sd->hid_sensor_client_cnt++; |
cb67126f SP |
716 | if (collection_hsdev) |
717 | collection_hsdev->end_collection_index = i; | |
718 | if (collection->type == HID_COLLECTION_APPLICATION && | |
719 | collection->usage == HID_USAGE_SENSOR_COLLECTION) | |
720 | collection_hsdev = hsdev; | |
401ca24f | 721 | } |
722 | } | |
ca2ed12f SP |
723 | if (last_hsdev) |
724 | last_hsdev->end_collection_index = i; | |
cb67126f SP |
725 | if (collection_hsdev) |
726 | collection_hsdev->end_collection_index = i; | |
ca2ed12f | 727 | |
16b5fe29 JH |
728 | ret = mfd_add_hotplug_devices(&hdev->dev, |
729 | sd->hid_sensor_hub_client_devs, | |
730 | sd->hid_sensor_client_cnt); | |
401ca24f | 731 | if (ret < 0) |
5be5db24 | 732 | goto err_stop_hw; |
401ca24f | 733 | |
734 | return ret; | |
735 | ||
401ca24f | 736 | err_stop_hw: |
737 | hid_hw_stop(hdev); | |
401ca24f | 738 | |
739 | return ret; | |
740 | } | |
741 | ||
742 | static void sensor_hub_remove(struct hid_device *hdev) | |
743 | { | |
744 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
745 | unsigned long flags; | |
e651a1da | 746 | int i; |
401ca24f | 747 | |
748 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 749 | hid_hw_close(hdev); |
f2f13a68 | 750 | hid_hw_stop(hdev); |
401ca24f | 751 | spin_lock_irqsave(&data->lock, flags); |
e651a1da SP |
752 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
753 | struct hid_sensor_hub_device *hsdev = | |
754 | data->hid_sensor_hub_client_devs[i].platform_data; | |
755 | if (hsdev->pending.status) | |
756 | complete(&hsdev->pending.ready); | |
757 | } | |
401ca24f | 758 | spin_unlock_irqrestore(&data->lock, flags); |
759 | mfd_remove_devices(&hdev->dev); | |
401ca24f | 760 | hid_set_drvdata(hdev, NULL); |
761 | mutex_destroy(&data->mutex); | |
401ca24f | 762 | } |
763 | ||
764 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 | 765 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
30f58877 | 766 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
875e36f8 SP |
767 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
768 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
30f58877 SCP |
769 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
770 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
771 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
772 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), | |
875e36f8 | 773 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
00478ee8 RA |
774 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
775 | USB_DEVICE_ID_MS_SURFACE_PRO_2), | |
776 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
777 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
778 | USB_DEVICE_ID_MS_TOUCH_COVER_2), | |
779 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
780 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
781 | USB_DEVICE_ID_MS_TYPE_COVER_2), | |
782 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
467669c5 SP |
783 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
784 | USB_DEVICE_ID_STM_HID_SENSOR), | |
785 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed | 786 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
dde3b45c | 787 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
218eb9ed | 788 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
825747bb PPS |
789 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
790 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), | |
791 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
21589ebd GL |
792 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
793 | USB_DEVICE_ID_ITE_LENOVO_YOGA), | |
794 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
e8e88438 RRS |
795 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
796 | USB_DEVICE_ID_ITE_LENOVO_YOGA2), | |
797 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
76833559 SP |
798 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
799 | USB_DEVICE_ID_ITE_LENOVO_YOGA900), | |
800 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
801 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
802 | HID_ANY_ID) }, | |
401ca24f | 803 | { } |
804 | }; | |
805 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
806 | ||
401ca24f | 807 | static struct hid_driver sensor_hub_driver = { |
808 | .name = "hid-sensor-hub", | |
809 | .id_table = sensor_hub_devices, | |
810 | .probe = sensor_hub_probe, | |
811 | .remove = sensor_hub_remove, | |
812 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 813 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 814 | #ifdef CONFIG_PM |
815 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
816 | .resume = sensor_hub_resume, |
817 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 818 | #endif |
819 | }; | |
f425458e | 820 | module_hid_driver(sensor_hub_driver); |
401ca24f | 821 | |
822 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
823 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
824 | MODULE_LICENSE("GPL"); |