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). | |
59 | */ | |
60 | struct sensor_hub_data { | |
61 | struct hid_sensor_hub_device *hsdev; | |
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; |
401ca24f | 70 | }; |
71 | ||
72 | /** | |
73 | * struct hid_sensor_hub_callbacks_list - Stores callback list | |
74 | * @list: list head. | |
75 | * @usage_id: usage id for a physical device. | |
76 | * @usage_callback: Stores registered callback functions. | |
77 | * @priv: Private data for a physical device. | |
78 | */ | |
79 | struct hid_sensor_hub_callbacks_list { | |
80 | struct list_head list; | |
81 | u32 usage_id; | |
82 | struct hid_sensor_hub_callbacks *usage_callback; | |
83 | void *priv; | |
84 | }; | |
85 | ||
401ca24f | 86 | static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, |
87 | int dir) | |
88 | { | |
89 | struct hid_report *report; | |
90 | ||
91 | list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { | |
92 | if (report->id == id) | |
93 | return report; | |
94 | } | |
95 | hid_warn(hdev, "No report with id 0x%x found\n", id); | |
96 | ||
97 | return NULL; | |
98 | } | |
99 | ||
100 | static int sensor_hub_get_physical_device_count( | |
101 | struct hid_report_enum *report_enum) | |
102 | { | |
103 | struct hid_report *report; | |
104 | struct hid_field *field; | |
105 | int cnt = 0; | |
106 | ||
107 | list_for_each_entry(report, &report_enum->report_list, list) { | |
108 | field = report->field[0]; | |
5902fde1 | 109 | if (report->maxfield && field && field->physical) |
401ca24f | 110 | cnt++; |
111 | } | |
112 | ||
113 | return cnt; | |
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, | |
131 | u32 usage_id, void **priv) | |
132 | { | |
133 | struct hid_sensor_hub_callbacks_list *callback; | |
134 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
135 | ||
136 | spin_lock(&pdata->dyn_callback_lock); | |
137 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
138 | if (callback->usage_id == usage_id) { | |
139 | *priv = callback->priv; | |
140 | spin_unlock(&pdata->dyn_callback_lock); | |
141 | return callback->usage_callback; | |
142 | } | |
143 | spin_unlock(&pdata->dyn_callback_lock); | |
144 | ||
145 | return NULL; | |
146 | } | |
147 | ||
148 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, | |
149 | u32 usage_id, | |
150 | struct hid_sensor_hub_callbacks *usage_callback) | |
151 | { | |
152 | struct hid_sensor_hub_callbacks_list *callback; | |
153 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
154 | ||
155 | spin_lock(&pdata->dyn_callback_lock); | |
156 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
157 | if (callback->usage_id == usage_id) { | |
158 | spin_unlock(&pdata->dyn_callback_lock); | |
159 | return -EINVAL; | |
160 | } | |
2b7c4b8e | 161 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 162 | if (!callback) { |
163 | spin_unlock(&pdata->dyn_callback_lock); | |
164 | return -ENOMEM; | |
165 | } | |
166 | callback->usage_callback = usage_callback; | |
167 | callback->usage_id = usage_id; | |
168 | callback->priv = NULL; | |
169 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
170 | spin_unlock(&pdata->dyn_callback_lock); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
175 | ||
176 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
177 | u32 usage_id) | |
178 | { | |
179 | struct hid_sensor_hub_callbacks_list *callback; | |
180 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
181 | ||
182 | spin_lock(&pdata->dyn_callback_lock); | |
183 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) | |
184 | if (callback->usage_id == usage_id) { | |
185 | list_del(&callback->list); | |
186 | kfree(callback); | |
187 | break; | |
188 | } | |
189 | spin_unlock(&pdata->dyn_callback_lock); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); | |
194 | ||
195 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
196 | u32 field_index, s32 value) | |
197 | { | |
198 | struct hid_report *report; | |
5902fde1 | 199 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 200 | int ret = 0; |
201 | ||
401ca24f | 202 | mutex_lock(&data->mutex); |
203 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 204 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 205 | ret = -EINVAL; |
206 | goto done_proc; | |
207 | } | |
208 | hid_set_field(report->field[field_index], 0, value); | |
d8814272 | 209 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 210 | hid_hw_wait(hsdev->hdev); |
401ca24f | 211 | |
212 | done_proc: | |
213 | mutex_unlock(&data->mutex); | |
214 | ||
215 | return ret; | |
216 | } | |
217 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
218 | ||
219 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
220 | u32 field_index, s32 *value) | |
221 | { | |
222 | struct hid_report *report; | |
5902fde1 | 223 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 224 | int ret = 0; |
225 | ||
401ca24f | 226 | mutex_lock(&data->mutex); |
227 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 228 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 229 | report->field[field_index]->report_count < 1) { |
401ca24f | 230 | ret = -EINVAL; |
231 | goto done_proc; | |
232 | } | |
d8814272 | 233 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 234 | hid_hw_wait(hsdev->hdev); |
401ca24f | 235 | *value = report->field[field_index]->value[0]; |
236 | ||
237 | done_proc: | |
238 | mutex_unlock(&data->mutex); | |
239 | ||
240 | return ret; | |
241 | } | |
242 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
243 | ||
244 | ||
245 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
246 | u32 usage_id, | |
247 | u32 attr_usage_id, u32 report_id) | |
248 | { | |
5902fde1 | 249 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 250 | unsigned long flags; |
251 | struct hid_report *report; | |
252 | int ret_val = 0; | |
253 | ||
401ca24f | 254 | mutex_lock(&data->mutex); |
255 | memset(&data->pending, 0, sizeof(data->pending)); | |
256 | init_completion(&data->pending.ready); | |
257 | data->pending.usage_id = usage_id; | |
258 | data->pending.attr_usage_id = attr_usage_id; | |
259 | data->pending.raw_size = 0; | |
260 | ||
261 | spin_lock_irqsave(&data->lock, flags); | |
262 | data->pending.status = true; | |
263 | report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); | |
264 | if (!report) { | |
265 | spin_unlock_irqrestore(&data->lock, flags); | |
266 | goto err_free; | |
267 | } | |
d8814272 | 268 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 269 | spin_unlock_irqrestore(&data->lock, flags); |
270 | wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); | |
271 | switch (data->pending.raw_size) { | |
272 | case 1: | |
273 | ret_val = *(u8 *)data->pending.raw_data; | |
274 | break; | |
275 | case 2: | |
276 | ret_val = *(u16 *)data->pending.raw_data; | |
277 | break; | |
278 | case 4: | |
279 | ret_val = *(u32 *)data->pending.raw_data; | |
280 | break; | |
281 | default: | |
282 | ret_val = 0; | |
283 | } | |
284 | kfree(data->pending.raw_data); | |
285 | ||
286 | err_free: | |
287 | data->pending.status = false; | |
288 | mutex_unlock(&data->mutex); | |
289 | ||
290 | return ret_val; | |
291 | } | |
292 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
293 | ||
294 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, | |
295 | u8 type, | |
296 | u32 usage_id, | |
297 | u32 attr_usage_id, | |
298 | struct hid_sensor_hub_attribute_info *info) | |
299 | { | |
300 | int ret = -1; | |
301 | int i, j; | |
302 | int collection_index = -1; | |
303 | struct hid_report *report; | |
304 | struct hid_field *field; | |
305 | struct hid_report_enum *report_enum; | |
306 | struct hid_device *hdev = hsdev->hdev; | |
307 | ||
308 | /* Initialize with defaults */ | |
309 | info->usage_id = usage_id; | |
5902fde1 | 310 | info->attrib_id = attr_usage_id; |
401ca24f | 311 | info->report_id = -1; |
312 | info->index = -1; | |
313 | info->units = -1; | |
314 | info->unit_expo = -1; | |
315 | ||
316 | for (i = 0; i < hdev->maxcollection; ++i) { | |
317 | struct hid_collection *collection = &hdev->collection[i]; | |
318 | if (usage_id == collection->usage) { | |
319 | collection_index = i; | |
320 | break; | |
321 | } | |
322 | } | |
323 | if (collection_index == -1) | |
324 | goto err_ret; | |
325 | ||
326 | report_enum = &hdev->report_enum[type]; | |
327 | list_for_each_entry(report, &report_enum->report_list, list) { | |
328 | for (i = 0; i < report->maxfield; ++i) { | |
329 | field = report->field[i]; | |
330 | if (field->physical == usage_id && | |
331 | field->logical == attr_usage_id) { | |
332 | sensor_hub_fill_attr_info(info, i, report->id, | |
9f740ffa | 333 | field); |
401ca24f | 334 | ret = 0; |
335 | } else { | |
336 | for (j = 0; j < field->maxusage; ++j) { | |
337 | if (field->usage[j].hid == | |
338 | attr_usage_id && | |
339 | field->usage[j].collection_index == | |
5902fde1 | 340 | collection_index) { |
401ca24f | 341 | sensor_hub_fill_attr_info(info, |
9f740ffa | 342 | i, report->id, field); |
401ca24f | 343 | ret = 0; |
344 | break; | |
345 | } | |
346 | } | |
347 | } | |
348 | if (ret == 0) | |
349 | break; | |
350 | } | |
351 | } | |
352 | ||
353 | err_ret: | |
354 | return ret; | |
355 | } | |
356 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
357 | ||
358 | #ifdef CONFIG_PM | |
359 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
360 | { | |
5902fde1 | 361 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 362 | struct hid_sensor_hub_callbacks_list *callback; |
363 | ||
364 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
365 | spin_lock(&pdata->dyn_callback_lock); | |
366 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { | |
367 | if (callback->usage_callback->suspend) | |
368 | callback->usage_callback->suspend( | |
369 | pdata->hsdev, callback->priv); | |
370 | } | |
371 | spin_unlock(&pdata->dyn_callback_lock); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int sensor_hub_resume(struct hid_device *hdev) | |
377 | { | |
5902fde1 | 378 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 379 | struct hid_sensor_hub_callbacks_list *callback; |
380 | ||
381 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
382 | spin_lock(&pdata->dyn_callback_lock); | |
383 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { | |
384 | if (callback->usage_callback->resume) | |
385 | callback->usage_callback->resume( | |
386 | pdata->hsdev, callback->priv); | |
387 | } | |
388 | spin_unlock(&pdata->dyn_callback_lock); | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
393 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
394 | { | |
395 | return 0; | |
396 | } | |
397 | #endif | |
5902fde1 | 398 | |
401ca24f | 399 | /* |
400 | * Handle raw report as sent by device | |
401 | */ | |
402 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
403 | struct hid_report *report, u8 *raw_data, int size) | |
404 | { | |
405 | int i; | |
406 | u8 *ptr; | |
407 | int sz; | |
408 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
409 | unsigned long flags; | |
410 | struct hid_sensor_hub_callbacks *callback = NULL; | |
411 | struct hid_collection *collection = NULL; | |
412 | void *priv = NULL; | |
413 | ||
414 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
415 | report->id, size, report->type); | |
416 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
417 | if (report->type != HID_INPUT_REPORT) | |
418 | return 1; | |
419 | ||
420 | ptr = raw_data; | |
15261f6d | 421 | ptr++; /* Skip report id */ |
401ca24f | 422 | |
401ca24f | 423 | spin_lock_irqsave(&pdata->lock, flags); |
424 | ||
425 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 426 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
427 | i, report->field[i]->usage->collection_index, | |
428 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
429 | (report->field[i]->report_size * |
430 | report->field[i]->report_count)/8); | |
431 | sz = (report->field[i]->report_size * | |
432 | report->field[i]->report_count)/8; | |
401ca24f | 433 | if (pdata->pending.status && pdata->pending.attr_usage_id == |
434 | report->field[i]->usage->hid) { | |
435 | hid_dbg(hdev, "data was pending ...\n"); | |
7b0692f1 AS |
436 | pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); |
437 | if (pdata->pending.raw_data) | |
5902fde1 | 438 | pdata->pending.raw_size = sz; |
7b0692f1 | 439 | else |
401ca24f | 440 | pdata->pending.raw_size = 0; |
441 | complete(&pdata->pending.ready); | |
442 | } | |
443 | collection = &hdev->collection[ | |
444 | report->field[i]->usage->collection_index]; | |
445 | hid_dbg(hdev, "collection->usage %x\n", | |
446 | collection->usage); | |
447 | callback = sensor_hub_get_callback(pdata->hsdev->hdev, | |
448 | report->field[i]->physical, | |
449 | &priv); | |
450 | if (callback && callback->capture_sample) { | |
451 | if (report->field[i]->logical) | |
452 | callback->capture_sample(pdata->hsdev, | |
453 | report->field[i]->logical, sz, ptr, | |
454 | callback->pdev); | |
455 | else | |
456 | callback->capture_sample(pdata->hsdev, | |
457 | report->field[i]->usage->hid, sz, ptr, | |
458 | callback->pdev); | |
459 | } | |
460 | ptr += sz; | |
461 | } | |
462 | if (callback && collection && callback->send_event) | |
463 | callback->send_event(pdata->hsdev, collection->usage, | |
464 | callback->pdev); | |
465 | spin_unlock_irqrestore(&pdata->lock, flags); | |
466 | ||
401ca24f | 467 | return 1; |
468 | } | |
469 | ||
1df3a401 SP |
470 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
471 | { | |
472 | int ret = 0; | |
473 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
474 | ||
475 | mutex_lock(&data->mutex); | |
476 | if (!hsdev->ref_cnt) { | |
477 | ret = hid_hw_open(hsdev->hdev); | |
478 | if (ret) { | |
479 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
480 | mutex_unlock(&data->mutex); | |
481 | return ret; | |
482 | } | |
483 | } | |
484 | hsdev->ref_cnt++; | |
485 | mutex_unlock(&data->mutex); | |
486 | ||
487 | return ret; | |
488 | } | |
489 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
490 | ||
491 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
492 | { | |
493 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
494 | ||
495 | mutex_lock(&data->mutex); | |
496 | hsdev->ref_cnt--; | |
497 | if (!hsdev->ref_cnt) | |
498 | hid_hw_close(hsdev->hdev); | |
499 | mutex_unlock(&data->mutex); | |
500 | } | |
501 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
502 | ||
875e36f8 SP |
503 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
504 | unsigned int *rsize) | |
505 | { | |
506 | int index; | |
507 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
508 | unsigned char report_block[] = { | |
509 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
510 | unsigned char power_block[] = { | |
511 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
512 | ||
513 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
514 | hid_dbg(hdev, "No Enum quirks\n"); | |
515 | return rdesc; | |
516 | } | |
517 | ||
518 | /* Looks for power and report state usage id and force to 1 */ | |
519 | for (index = 0; index < *rsize; ++index) { | |
520 | if (((*rsize - index) > sizeof(report_block)) && | |
521 | !memcmp(&rdesc[index], report_block, | |
522 | sizeof(report_block))) { | |
523 | rdesc[index + 4] = 0x01; | |
524 | index += sizeof(report_block); | |
525 | } | |
526 | if (((*rsize - index) > sizeof(power_block)) && | |
527 | !memcmp(&rdesc[index], power_block, | |
528 | sizeof(power_block))) { | |
529 | rdesc[index + 4] = 0x01; | |
530 | index += sizeof(power_block); | |
531 | } | |
532 | } | |
533 | ||
534 | return rdesc; | |
535 | } | |
536 | ||
401ca24f | 537 | static int sensor_hub_probe(struct hid_device *hdev, |
538 | const struct hid_device_id *id) | |
539 | { | |
540 | int ret; | |
541 | struct sensor_hub_data *sd; | |
542 | int i; | |
543 | char *name; | |
544 | struct hid_report *report; | |
545 | struct hid_report_enum *report_enum; | |
546 | struct hid_field *field; | |
547 | int dev_cnt; | |
548 | ||
905cc199 | 549 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 550 | if (!sd) { |
551 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
552 | return -ENOMEM; | |
553 | } | |
905cc199 | 554 | sd->hsdev = devm_kzalloc(&hdev->dev, sizeof(*sd->hsdev), GFP_KERNEL); |
401ca24f | 555 | if (!sd->hsdev) { |
556 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
905cc199 | 557 | return -ENOMEM; |
401ca24f | 558 | } |
559 | hid_set_drvdata(hdev, sd); | |
875e36f8 | 560 | sd->quirks = id->driver_data; |
401ca24f | 561 | sd->hsdev->hdev = hdev; |
562 | sd->hsdev->vendor_id = hdev->vendor; | |
563 | sd->hsdev->product_id = hdev->product; | |
564 | spin_lock_init(&sd->lock); | |
565 | spin_lock_init(&sd->dyn_callback_lock); | |
566 | mutex_init(&sd->mutex); | |
567 | ret = hid_parse(hdev); | |
568 | if (ret) { | |
569 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 570 | return ret; |
401ca24f | 571 | } |
401ca24f | 572 | INIT_LIST_HEAD(&hdev->inputs); |
573 | ||
401ca24f | 574 | ret = hid_hw_start(hdev, 0); |
575 | if (ret) { | |
576 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 577 | return ret; |
401ca24f | 578 | } |
401ca24f | 579 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
580 | sd->hid_sensor_client_cnt = 0; | |
581 | report_enum = &hdev->report_enum[HID_INPUT_REPORT]; | |
582 | ||
583 | dev_cnt = sensor_hub_get_physical_device_count(report_enum); | |
584 | if (dev_cnt > HID_MAX_PHY_DEVICES) { | |
585 | hid_err(hdev, "Invalid Physical device count\n"); | |
586 | ret = -EINVAL; | |
1df3a401 | 587 | goto err_stop_hw; |
401ca24f | 588 | } |
589 | sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt * | |
590 | sizeof(struct mfd_cell), | |
591 | GFP_KERNEL); | |
592 | if (sd->hid_sensor_hub_client_devs == NULL) { | |
f2f13a68 | 593 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
401ca24f | 594 | ret = -ENOMEM; |
1df3a401 | 595 | goto err_stop_hw; |
401ca24f | 596 | } |
597 | list_for_each_entry(report, &report_enum->report_list, list) { | |
598 | hid_dbg(hdev, "Report id:%x\n", report->id); | |
599 | field = report->field[0]; | |
600 | if (report->maxfield && field && | |
601 | field->physical) { | |
602 | name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x", | |
603 | field->physical); | |
5902fde1 | 604 | if (name == NULL) { |
f2f13a68 | 605 | hid_err(hdev, "Failed MFD device name\n"); |
401ca24f | 606 | ret = -ENOMEM; |
f2f13a68 | 607 | goto err_free_names; |
401ca24f | 608 | } |
609 | sd->hid_sensor_hub_client_devs[ | |
d81cae80 SP |
610 | sd->hid_sensor_client_cnt].id = PLATFORM_DEVID_AUTO; |
611 | sd->hid_sensor_hub_client_devs[ | |
401ca24f | 612 | sd->hid_sensor_client_cnt].name = name; |
613 | sd->hid_sensor_hub_client_devs[ | |
614 | sd->hid_sensor_client_cnt].platform_data = | |
615 | sd->hsdev; | |
616 | sd->hid_sensor_hub_client_devs[ | |
617 | sd->hid_sensor_client_cnt].pdata_size = | |
618 | sizeof(*sd->hsdev); | |
619 | hid_dbg(hdev, "Adding %s:%p\n", name, sd); | |
620 | sd->hid_sensor_client_cnt++; | |
621 | } | |
622 | } | |
623 | ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, | |
f45c69b1 | 624 | sd->hid_sensor_client_cnt, NULL, 0, NULL); |
401ca24f | 625 | if (ret < 0) |
626 | goto err_free_names; | |
627 | ||
628 | return ret; | |
629 | ||
630 | err_free_names: | |
631 | for (i = 0; i < sd->hid_sensor_client_cnt ; ++i) | |
632 | kfree(sd->hid_sensor_hub_client_devs[i].name); | |
401ca24f | 633 | kfree(sd->hid_sensor_hub_client_devs); |
401ca24f | 634 | err_stop_hw: |
635 | hid_hw_stop(hdev); | |
401ca24f | 636 | |
637 | return ret; | |
638 | } | |
639 | ||
640 | static void sensor_hub_remove(struct hid_device *hdev) | |
641 | { | |
642 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
643 | unsigned long flags; | |
644 | int i; | |
645 | ||
646 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 647 | hid_hw_close(hdev); |
f2f13a68 | 648 | hid_hw_stop(hdev); |
401ca24f | 649 | spin_lock_irqsave(&data->lock, flags); |
650 | if (data->pending.status) | |
651 | complete(&data->pending.ready); | |
652 | spin_unlock_irqrestore(&data->lock, flags); | |
653 | mfd_remove_devices(&hdev->dev); | |
654 | for (i = 0; i < data->hid_sensor_client_cnt ; ++i) | |
655 | kfree(data->hid_sensor_hub_client_devs[i].name); | |
656 | kfree(data->hid_sensor_hub_client_devs); | |
657 | hid_set_drvdata(hdev, NULL); | |
658 | mutex_destroy(&data->mutex); | |
401ca24f | 659 | } |
660 | ||
661 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 SP |
662 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
663 | USB_DEVICE_ID_INTEL_HID_SENSOR), | |
664 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
665 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
666 | USB_DEVICE_ID_INTEL_HID_SENSOR), | |
667 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed AP |
668 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
669 | USB_DEVICE_ID_STM_HID_SENSOR), | |
670 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
671 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
672 | HID_ANY_ID) }, | |
401ca24f | 673 | { } |
674 | }; | |
675 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
676 | ||
401ca24f | 677 | static struct hid_driver sensor_hub_driver = { |
678 | .name = "hid-sensor-hub", | |
679 | .id_table = sensor_hub_devices, | |
680 | .probe = sensor_hub_probe, | |
681 | .remove = sensor_hub_remove, | |
682 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 683 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 684 | #ifdef CONFIG_PM |
685 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
686 | .resume = sensor_hub_resume, |
687 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 688 | #endif |
689 | }; | |
f425458e | 690 | module_hid_driver(sensor_hub_driver); |
401ca24f | 691 | |
692 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
693 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
694 | MODULE_LICENSE("GPL"); |