1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2009 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
4 */
5
6
7 #include <linux/init.h>
8 #include <linux/module.h>
9 #include <linux/slab.h>
10 #include <linux/workqueue.h>
11 #include <linux/acpi.h>
12 #include <linux/backlight.h>
13 #include <linux/input.h>
14 #include <linux/rfkill.h>
15
16 MODULE_LICENSE("GPL");
17
18 struct cmpc_accel {
19 int sensitivity;
20 int g_select;
21 int inputdev_state;
22 };
23
24 #define CMPC_ACCEL_DEV_STATE_CLOSED 0
25 #define CMPC_ACCEL_DEV_STATE_OPEN 1
26
27 #define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
28 #define CMPC_ACCEL_G_SELECT_DEFAULT 0
29
30 #define CMPC_ACCEL_HID "ACCE0000"
31 #define CMPC_ACCEL_HID_V4 "ACCE0001"
32 #define CMPC_TABLET_HID "TBLT0000"
33 #define CMPC_IPML_HID "IPML200"
34 #define CMPC_KEYS_HID "FNBT0000"
35
36 /*
37 * Generic input device code.
38 */
39
40 typedef void (*input_device_init)(struct input_dev *dev);
41
cmpc_add_acpi_notify_device(struct acpi_device * acpi,char * name,input_device_init idev_init)42 static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name,
43 input_device_init idev_init)
44 {
45 struct input_dev *inputdev;
46 int error;
47
48 inputdev = input_allocate_device();
49 if (!inputdev)
50 return -ENOMEM;
51 inputdev->name = name;
52 inputdev->dev.parent = &acpi->dev;
53 idev_init(inputdev);
54 error = input_register_device(inputdev);
55 if (error) {
56 input_free_device(inputdev);
57 return error;
58 }
59 dev_set_drvdata(&acpi->dev, inputdev);
60 return 0;
61 }
62
cmpc_remove_acpi_notify_device(struct acpi_device * acpi)63 static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
64 {
65 struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
66 input_unregister_device(inputdev);
67 return 0;
68 }
69
70 /*
71 * Accelerometer code for Classmate V4
72 */
cmpc_start_accel_v4(acpi_handle handle)73 static acpi_status cmpc_start_accel_v4(acpi_handle handle)
74 {
75 union acpi_object param[4];
76 struct acpi_object_list input;
77 acpi_status status;
78
79 param[0].type = ACPI_TYPE_INTEGER;
80 param[0].integer.value = 0x3;
81 param[1].type = ACPI_TYPE_INTEGER;
82 param[1].integer.value = 0;
83 param[2].type = ACPI_TYPE_INTEGER;
84 param[2].integer.value = 0;
85 param[3].type = ACPI_TYPE_INTEGER;
86 param[3].integer.value = 0;
87 input.count = 4;
88 input.pointer = param;
89 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
90 return status;
91 }
92
cmpc_stop_accel_v4(acpi_handle handle)93 static acpi_status cmpc_stop_accel_v4(acpi_handle handle)
94 {
95 union acpi_object param[4];
96 struct acpi_object_list input;
97 acpi_status status;
98
99 param[0].type = ACPI_TYPE_INTEGER;
100 param[0].integer.value = 0x4;
101 param[1].type = ACPI_TYPE_INTEGER;
102 param[1].integer.value = 0;
103 param[2].type = ACPI_TYPE_INTEGER;
104 param[2].integer.value = 0;
105 param[3].type = ACPI_TYPE_INTEGER;
106 param[3].integer.value = 0;
107 input.count = 4;
108 input.pointer = param;
109 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
110 return status;
111 }
112
cmpc_accel_set_sensitivity_v4(acpi_handle handle,int val)113 static acpi_status cmpc_accel_set_sensitivity_v4(acpi_handle handle, int val)
114 {
115 union acpi_object param[4];
116 struct acpi_object_list input;
117
118 param[0].type = ACPI_TYPE_INTEGER;
119 param[0].integer.value = 0x02;
120 param[1].type = ACPI_TYPE_INTEGER;
121 param[1].integer.value = val;
122 param[2].type = ACPI_TYPE_INTEGER;
123 param[2].integer.value = 0;
124 param[3].type = ACPI_TYPE_INTEGER;
125 param[3].integer.value = 0;
126 input.count = 4;
127 input.pointer = param;
128 return acpi_evaluate_object(handle, "ACMD", &input, NULL);
129 }
130
cmpc_accel_set_g_select_v4(acpi_handle handle,int val)131 static acpi_status cmpc_accel_set_g_select_v4(acpi_handle handle, int val)
132 {
133 union acpi_object param[4];
134 struct acpi_object_list input;
135
136 param[0].type = ACPI_TYPE_INTEGER;
137 param[0].integer.value = 0x05;
138 param[1].type = ACPI_TYPE_INTEGER;
139 param[1].integer.value = val;
140 param[2].type = ACPI_TYPE_INTEGER;
141 param[2].integer.value = 0;
142 param[3].type = ACPI_TYPE_INTEGER;
143 param[3].integer.value = 0;
144 input.count = 4;
145 input.pointer = param;
146 return acpi_evaluate_object(handle, "ACMD", &input, NULL);
147 }
148
cmpc_get_accel_v4(acpi_handle handle,int16_t * x,int16_t * y,int16_t * z)149 static acpi_status cmpc_get_accel_v4(acpi_handle handle,
150 int16_t *x,
151 int16_t *y,
152 int16_t *z)
153 {
154 union acpi_object param[4];
155 struct acpi_object_list input;
156 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
157 int16_t *locs;
158 acpi_status status;
159
160 param[0].type = ACPI_TYPE_INTEGER;
161 param[0].integer.value = 0x01;
162 param[1].type = ACPI_TYPE_INTEGER;
163 param[1].integer.value = 0;
164 param[2].type = ACPI_TYPE_INTEGER;
165 param[2].integer.value = 0;
166 param[3].type = ACPI_TYPE_INTEGER;
167 param[3].integer.value = 0;
168 input.count = 4;
169 input.pointer = param;
170 status = acpi_evaluate_object(handle, "ACMD", &input, &output);
171 if (ACPI_SUCCESS(status)) {
172 union acpi_object *obj;
173 obj = output.pointer;
174 locs = (int16_t *) obj->buffer.pointer;
175 *x = locs[0];
176 *y = locs[1];
177 *z = locs[2];
178 kfree(output.pointer);
179 }
180 return status;
181 }
182
cmpc_accel_handler_v4(struct acpi_device * dev,u32 event)183 static void cmpc_accel_handler_v4(struct acpi_device *dev, u32 event)
184 {
185 if (event == 0x81) {
186 int16_t x, y, z;
187 acpi_status status;
188
189 status = cmpc_get_accel_v4(dev->handle, &x, &y, &z);
190 if (ACPI_SUCCESS(status)) {
191 struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
192
193 input_report_abs(inputdev, ABS_X, x);
194 input_report_abs(inputdev, ABS_Y, y);
195 input_report_abs(inputdev, ABS_Z, z);
196 input_sync(inputdev);
197 }
198 }
199 }
200
cmpc_accel_sensitivity_show_v4(struct device * dev,struct device_attribute * attr,char * buf)201 static ssize_t cmpc_accel_sensitivity_show_v4(struct device *dev,
202 struct device_attribute *attr,
203 char *buf)
204 {
205 struct acpi_device *acpi;
206 struct input_dev *inputdev;
207 struct cmpc_accel *accel;
208
209 acpi = to_acpi_device(dev);
210 inputdev = dev_get_drvdata(&acpi->dev);
211 accel = dev_get_drvdata(&inputdev->dev);
212
213 return sprintf(buf, "%d\n", accel->sensitivity);
214 }
215
cmpc_accel_sensitivity_store_v4(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)216 static ssize_t cmpc_accel_sensitivity_store_v4(struct device *dev,
217 struct device_attribute *attr,
218 const char *buf, size_t count)
219 {
220 struct acpi_device *acpi;
221 struct input_dev *inputdev;
222 struct cmpc_accel *accel;
223 unsigned long sensitivity;
224 int r;
225
226 acpi = to_acpi_device(dev);
227 inputdev = dev_get_drvdata(&acpi->dev);
228 accel = dev_get_drvdata(&inputdev->dev);
229
230 r = kstrtoul(buf, 0, &sensitivity);
231 if (r)
232 return r;
233
234 /* sensitivity must be between 1 and 127 */
235 if (sensitivity < 1 || sensitivity > 127)
236 return -EINVAL;
237
238 accel->sensitivity = sensitivity;
239 cmpc_accel_set_sensitivity_v4(acpi->handle, sensitivity);
240
241 return strnlen(buf, count);
242 }
243
244 static struct device_attribute cmpc_accel_sensitivity_attr_v4 = {
245 .attr = { .name = "sensitivity", .mode = 0660 },
246 .show = cmpc_accel_sensitivity_show_v4,
247 .store = cmpc_accel_sensitivity_store_v4
248 };
249
cmpc_accel_g_select_show_v4(struct device * dev,struct device_attribute * attr,char * buf)250 static ssize_t cmpc_accel_g_select_show_v4(struct device *dev,
251 struct device_attribute *attr,
252 char *buf)
253 {
254 struct acpi_device *acpi;
255 struct input_dev *inputdev;
256 struct cmpc_accel *accel;
257
258 acpi = to_acpi_device(dev);
259 inputdev = dev_get_drvdata(&acpi->dev);
260 accel = dev_get_drvdata(&inputdev->dev);
261
262 return sprintf(buf, "%d\n", accel->g_select);
263 }
264
cmpc_accel_g_select_store_v4(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)265 static ssize_t cmpc_accel_g_select_store_v4(struct device *dev,
266 struct device_attribute *attr,
267 const char *buf, size_t count)
268 {
269 struct acpi_device *acpi;
270 struct input_dev *inputdev;
271 struct cmpc_accel *accel;
272 unsigned long g_select;
273 int r;
274
275 acpi = to_acpi_device(dev);
276 inputdev = dev_get_drvdata(&acpi->dev);
277 accel = dev_get_drvdata(&inputdev->dev);
278
279 r = kstrtoul(buf, 0, &g_select);
280 if (r)
281 return r;
282
283 /* 0 means 1.5g, 1 means 6g, everything else is wrong */
284 if (g_select != 0 && g_select != 1)
285 return -EINVAL;
286
287 accel->g_select = g_select;
288 cmpc_accel_set_g_select_v4(acpi->handle, g_select);
289
290 return strnlen(buf, count);
291 }
292
293 static struct device_attribute cmpc_accel_g_select_attr_v4 = {
294 .attr = { .name = "g_select", .mode = 0660 },
295 .show = cmpc_accel_g_select_show_v4,
296 .store = cmpc_accel_g_select_store_v4
297 };
298
cmpc_accel_open_v4(struct input_dev * input)299 static int cmpc_accel_open_v4(struct input_dev *input)
300 {
301 struct acpi_device *acpi;
302 struct cmpc_accel *accel;
303
304 acpi = to_acpi_device(input->dev.parent);
305 accel = dev_get_drvdata(&input->dev);
306
307 cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
308 cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
309
310 if (ACPI_SUCCESS(cmpc_start_accel_v4(acpi->handle))) {
311 accel->inputdev_state = CMPC_ACCEL_DEV_STATE_OPEN;
312 return 0;
313 }
314 return -EIO;
315 }
316
cmpc_accel_close_v4(struct input_dev * input)317 static void cmpc_accel_close_v4(struct input_dev *input)
318 {
319 struct acpi_device *acpi;
320 struct cmpc_accel *accel;
321
322 acpi = to_acpi_device(input->dev.parent);
323 accel = dev_get_drvdata(&input->dev);
324
325 cmpc_stop_accel_v4(acpi->handle);
326 accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
327 }
328
cmpc_accel_idev_init_v4(struct input_dev * inputdev)329 static void cmpc_accel_idev_init_v4(struct input_dev *inputdev)
330 {
331 set_bit(EV_ABS, inputdev->evbit);
332 input_set_abs_params(inputdev, ABS_X, -255, 255, 16, 0);
333 input_set_abs_params(inputdev, ABS_Y, -255, 255, 16, 0);
334 input_set_abs_params(inputdev, ABS_Z, -255, 255, 16, 0);
335 inputdev->open = cmpc_accel_open_v4;
336 inputdev->close = cmpc_accel_close_v4;
337 }
338
339 #ifdef CONFIG_PM_SLEEP
cmpc_accel_suspend_v4(struct device * dev)340 static int cmpc_accel_suspend_v4(struct device *dev)
341 {
342 struct input_dev *inputdev;
343 struct cmpc_accel *accel;
344
345 inputdev = dev_get_drvdata(dev);
346 accel = dev_get_drvdata(&inputdev->dev);
347
348 if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN)
349 return cmpc_stop_accel_v4(to_acpi_device(dev)->handle);
350
351 return 0;
352 }
353
cmpc_accel_resume_v4(struct device * dev)354 static int cmpc_accel_resume_v4(struct device *dev)
355 {
356 struct input_dev *inputdev;
357 struct cmpc_accel *accel;
358
359 inputdev = dev_get_drvdata(dev);
360 accel = dev_get_drvdata(&inputdev->dev);
361
362 if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN) {
363 cmpc_accel_set_sensitivity_v4(to_acpi_device(dev)->handle,
364 accel->sensitivity);
365 cmpc_accel_set_g_select_v4(to_acpi_device(dev)->handle,
366 accel->g_select);
367
368 if (ACPI_FAILURE(cmpc_start_accel_v4(to_acpi_device(dev)->handle)))
369 return -EIO;
370 }
371
372 return 0;
373 }
374 #endif
375
cmpc_accel_add_v4(struct acpi_device * acpi)376 static int cmpc_accel_add_v4(struct acpi_device *acpi)
377 {
378 int error;
379 struct input_dev *inputdev;
380 struct cmpc_accel *accel;
381
382 accel = kmalloc(sizeof(*accel), GFP_KERNEL);
383 if (!accel)
384 return -ENOMEM;
385
386 accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
387
388 accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
389 cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
390
391 error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
392 if (error)
393 goto failed_sensitivity;
394
395 accel->g_select = CMPC_ACCEL_G_SELECT_DEFAULT;
396 cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
397
398 error = device_create_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
399 if (error)
400 goto failed_g_select;
401
402 error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel_v4",
403 cmpc_accel_idev_init_v4);
404 if (error)
405 goto failed_input;
406
407 inputdev = dev_get_drvdata(&acpi->dev);
408 dev_set_drvdata(&inputdev->dev, accel);
409
410 return 0;
411
412 failed_input:
413 device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
414 failed_g_select:
415 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
416 failed_sensitivity:
417 kfree(accel);
418 return error;
419 }
420
cmpc_accel_remove_v4(struct acpi_device * acpi)421 static void cmpc_accel_remove_v4(struct acpi_device *acpi)
422 {
423 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
424 device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
425 cmpc_remove_acpi_notify_device(acpi);
426 }
427
428 static SIMPLE_DEV_PM_OPS(cmpc_accel_pm, cmpc_accel_suspend_v4,
429 cmpc_accel_resume_v4);
430
431 static const struct acpi_device_id cmpc_accel_device_ids_v4[] = {
432 {CMPC_ACCEL_HID_V4, 0},
433 {"", 0}
434 };
435
436 static struct acpi_driver cmpc_accel_acpi_driver_v4 = {
437 .owner = THIS_MODULE,
438 .name = "cmpc_accel_v4",
439 .class = "cmpc_accel_v4",
440 .ids = cmpc_accel_device_ids_v4,
441 .ops = {
442 .add = cmpc_accel_add_v4,
443 .remove = cmpc_accel_remove_v4,
444 .notify = cmpc_accel_handler_v4,
445 },
446 .drv.pm = &cmpc_accel_pm,
447 };
448
449
450 /*
451 * Accelerometer code for Classmate versions prior to V4
452 */
cmpc_start_accel(acpi_handle handle)453 static acpi_status cmpc_start_accel(acpi_handle handle)
454 {
455 union acpi_object param[2];
456 struct acpi_object_list input;
457 acpi_status status;
458
459 param[0].type = ACPI_TYPE_INTEGER;
460 param[0].integer.value = 0x3;
461 param[1].type = ACPI_TYPE_INTEGER;
462 input.count = 2;
463 input.pointer = param;
464 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
465 return status;
466 }
467
cmpc_stop_accel(acpi_handle handle)468 static acpi_status cmpc_stop_accel(acpi_handle handle)
469 {
470 union acpi_object param[2];
471 struct acpi_object_list input;
472 acpi_status status;
473
474 param[0].type = ACPI_TYPE_INTEGER;
475 param[0].integer.value = 0x4;
476 param[1].type = ACPI_TYPE_INTEGER;
477 input.count = 2;
478 input.pointer = param;
479 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
480 return status;
481 }
482
cmpc_accel_set_sensitivity(acpi_handle handle,int val)483 static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val)
484 {
485 union acpi_object param[2];
486 struct acpi_object_list input;
487
488 param[0].type = ACPI_TYPE_INTEGER;
489 param[0].integer.value = 0x02;
490 param[1].type = ACPI_TYPE_INTEGER;
491 param[1].integer.value = val;
492 input.count = 2;
493 input.pointer = param;
494 return acpi_evaluate_object(handle, "ACMD", &input, NULL);
495 }
496
cmpc_get_accel(acpi_handle handle,unsigned char * x,unsigned char * y,unsigned char * z)497 static acpi_status cmpc_get_accel(acpi_handle handle,
498 unsigned char *x,
499 unsigned char *y,
500 unsigned char *z)
501 {
502 union acpi_object param[2];
503 struct acpi_object_list input;
504 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
505 unsigned char *locs;
506 acpi_status status;
507
508 param[0].type = ACPI_TYPE_INTEGER;
509 param[0].integer.value = 0x01;
510 param[1].type = ACPI_TYPE_INTEGER;
511 input.count = 2;
512 input.pointer = param;
513 status = acpi_evaluate_object(handle, "ACMD", &input, &output);
514 if (ACPI_SUCCESS(status)) {
515 union acpi_object *obj;
516 obj = output.pointer;
517 locs = obj->buffer.pointer;
518 *x = locs[0];
519 *y = locs[1];
520 *z = locs[2];
521 kfree(output.pointer);
522 }
523 return status;
524 }
525
cmpc_accel_handler(struct acpi_device * dev,u32 event)526 static void cmpc_accel_handler(struct acpi_device *dev, u32 event)
527 {
528 if (event == 0x81) {
529 unsigned char x, y, z;
530 acpi_status status;
531
532 status = cmpc_get_accel(dev->handle, &x, &y, &z);
533 if (ACPI_SUCCESS(status)) {
534 struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
535
536 input_report_abs(inputdev, ABS_X, x);
537 input_report_abs(inputdev, ABS_Y, y);
538 input_report_abs(inputdev, ABS_Z, z);
539 input_sync(inputdev);
540 }
541 }
542 }
543
cmpc_accel_sensitivity_show(struct device * dev,struct device_attribute * attr,char * buf)544 static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
545 struct device_attribute *attr,
546 char *buf)
547 {
548 struct acpi_device *acpi;
549 struct input_dev *inputdev;
550 struct cmpc_accel *accel;
551
552 acpi = to_acpi_device(dev);
553 inputdev = dev_get_drvdata(&acpi->dev);
554 accel = dev_get_drvdata(&inputdev->dev);
555
556 return sprintf(buf, "%d\n", accel->sensitivity);
557 }
558
cmpc_accel_sensitivity_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)559 static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
560 struct device_attribute *attr,
561 const char *buf, size_t count)
562 {
563 struct acpi_device *acpi;
564 struct input_dev *inputdev;
565 struct cmpc_accel *accel;
566 unsigned long sensitivity;
567 int r;
568
569 acpi = to_acpi_device(dev);
570 inputdev = dev_get_drvdata(&acpi->dev);
571 accel = dev_get_drvdata(&inputdev->dev);
572
573 r = kstrtoul(buf, 0, &sensitivity);
574 if (r)
575 return r;
576
577 accel->sensitivity = sensitivity;
578 cmpc_accel_set_sensitivity(acpi->handle, sensitivity);
579
580 return strnlen(buf, count);
581 }
582
583 static struct device_attribute cmpc_accel_sensitivity_attr = {
584 .attr = { .name = "sensitivity", .mode = 0660 },
585 .show = cmpc_accel_sensitivity_show,
586 .store = cmpc_accel_sensitivity_store
587 };
588
cmpc_accel_open(struct input_dev * input)589 static int cmpc_accel_open(struct input_dev *input)
590 {
591 struct acpi_device *acpi;
592
593 acpi = to_acpi_device(input->dev.parent);
594 if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle)))
595 return 0;
596 return -EIO;
597 }
598
cmpc_accel_close(struct input_dev * input)599 static void cmpc_accel_close(struct input_dev *input)
600 {
601 struct acpi_device *acpi;
602
603 acpi = to_acpi_device(input->dev.parent);
604 cmpc_stop_accel(acpi->handle);
605 }
606
cmpc_accel_idev_init(struct input_dev * inputdev)607 static void cmpc_accel_idev_init(struct input_dev *inputdev)
608 {
609 set_bit(EV_ABS, inputdev->evbit);
610 input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0);
611 input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0);
612 input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0);
613 inputdev->open = cmpc_accel_open;
614 inputdev->close = cmpc_accel_close;
615 }
616
cmpc_accel_add(struct acpi_device * acpi)617 static int cmpc_accel_add(struct acpi_device *acpi)
618 {
619 int error;
620 struct input_dev *inputdev;
621 struct cmpc_accel *accel;
622
623 accel = kmalloc(sizeof(*accel), GFP_KERNEL);
624 if (!accel)
625 return -ENOMEM;
626
627 accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
628 cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity);
629
630 error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
631 if (error)
632 goto failed_file;
633
634 error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel",
635 cmpc_accel_idev_init);
636 if (error)
637 goto failed_input;
638
639 inputdev = dev_get_drvdata(&acpi->dev);
640 dev_set_drvdata(&inputdev->dev, accel);
641
642 return 0;
643
644 failed_input:
645 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
646 failed_file:
647 kfree(accel);
648 return error;
649 }
650
cmpc_accel_remove(struct acpi_device * acpi)651 static void cmpc_accel_remove(struct acpi_device *acpi)
652 {
653 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
654 cmpc_remove_acpi_notify_device(acpi);
655 }
656
657 static const struct acpi_device_id cmpc_accel_device_ids[] = {
658 {CMPC_ACCEL_HID, 0},
659 {"", 0}
660 };
661
662 static struct acpi_driver cmpc_accel_acpi_driver = {
663 .owner = THIS_MODULE,
664 .name = "cmpc_accel",
665 .class = "cmpc_accel",
666 .ids = cmpc_accel_device_ids,
667 .ops = {
668 .add = cmpc_accel_add,
669 .remove = cmpc_accel_remove,
670 .notify = cmpc_accel_handler,
671 }
672 };
673
674
675 /*
676 * Tablet mode code.
677 */
cmpc_get_tablet(acpi_handle handle,unsigned long long * value)678 static acpi_status cmpc_get_tablet(acpi_handle handle,
679 unsigned long long *value)
680 {
681 union acpi_object param;
682 struct acpi_object_list input;
683 unsigned long long output;
684 acpi_status status;
685
686 param.type = ACPI_TYPE_INTEGER;
687 param.integer.value = 0x01;
688 input.count = 1;
689 input.pointer = ¶m;
690 status = acpi_evaluate_integer(handle, "TCMD", &input, &output);
691 if (ACPI_SUCCESS(status))
692 *value = output;
693 return status;
694 }
695
cmpc_tablet_handler(struct acpi_device * dev,u32 event)696 static void cmpc_tablet_handler(struct acpi_device *dev, u32 event)
697 {
698 unsigned long long val = 0;
699 struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
700
701 if (event == 0x81) {
702 if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val))) {
703 input_report_switch(inputdev, SW_TABLET_MODE, !val);
704 input_sync(inputdev);
705 }
706 }
707 }
708
cmpc_tablet_idev_init(struct input_dev * inputdev)709 static void cmpc_tablet_idev_init(struct input_dev *inputdev)
710 {
711 unsigned long long val = 0;
712 struct acpi_device *acpi;
713
714 set_bit(EV_SW, inputdev->evbit);
715 set_bit(SW_TABLET_MODE, inputdev->swbit);
716
717 acpi = to_acpi_device(inputdev->dev.parent);
718 if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) {
719 input_report_switch(inputdev, SW_TABLET_MODE, !val);
720 input_sync(inputdev);
721 }
722 }
723
cmpc_tablet_add(struct acpi_device * acpi)724 static int cmpc_tablet_add(struct acpi_device *acpi)
725 {
726 return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet",
727 cmpc_tablet_idev_init);
728 }
729
cmpc_tablet_remove(struct acpi_device * acpi)730 static void cmpc_tablet_remove(struct acpi_device *acpi)
731 {
732 cmpc_remove_acpi_notify_device(acpi);
733 }
734
735 #ifdef CONFIG_PM_SLEEP
cmpc_tablet_resume(struct device * dev)736 static int cmpc_tablet_resume(struct device *dev)
737 {
738 struct input_dev *inputdev = dev_get_drvdata(dev);
739
740 unsigned long long val = 0;
741 if (ACPI_SUCCESS(cmpc_get_tablet(to_acpi_device(dev)->handle, &val))) {
742 input_report_switch(inputdev, SW_TABLET_MODE, !val);
743 input_sync(inputdev);
744 }
745 return 0;
746 }
747 #endif
748
749 static SIMPLE_DEV_PM_OPS(cmpc_tablet_pm, NULL, cmpc_tablet_resume);
750
751 static const struct acpi_device_id cmpc_tablet_device_ids[] = {
752 {CMPC_TABLET_HID, 0},
753 {"", 0}
754 };
755
756 static struct acpi_driver cmpc_tablet_acpi_driver = {
757 .owner = THIS_MODULE,
758 .name = "cmpc_tablet",
759 .class = "cmpc_tablet",
760 .ids = cmpc_tablet_device_ids,
761 .ops = {
762 .add = cmpc_tablet_add,
763 .remove = cmpc_tablet_remove,
764 .notify = cmpc_tablet_handler,
765 },
766 .drv.pm = &cmpc_tablet_pm,
767 };
768
769
770 /*
771 * Backlight code.
772 */
773
cmpc_get_brightness(acpi_handle handle,unsigned long long * value)774 static acpi_status cmpc_get_brightness(acpi_handle handle,
775 unsigned long long *value)
776 {
777 union acpi_object param;
778 struct acpi_object_list input;
779 unsigned long long output;
780 acpi_status status;
781
782 param.type = ACPI_TYPE_INTEGER;
783 param.integer.value = 0xC0;
784 input.count = 1;
785 input.pointer = ¶m;
786 status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
787 if (ACPI_SUCCESS(status))
788 *value = output;
789 return status;
790 }
791
cmpc_set_brightness(acpi_handle handle,unsigned long long value)792 static acpi_status cmpc_set_brightness(acpi_handle handle,
793 unsigned long long value)
794 {
795 union acpi_object param[2];
796 struct acpi_object_list input;
797 acpi_status status;
798 unsigned long long output;
799
800 param[0].type = ACPI_TYPE_INTEGER;
801 param[0].integer.value = 0xC0;
802 param[1].type = ACPI_TYPE_INTEGER;
803 param[1].integer.value = value;
804 input.count = 2;
805 input.pointer = param;
806 status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
807 return status;
808 }
809
cmpc_bl_get_brightness(struct backlight_device * bd)810 static int cmpc_bl_get_brightness(struct backlight_device *bd)
811 {
812 acpi_status status;
813 acpi_handle handle;
814 unsigned long long brightness;
815
816 handle = bl_get_data(bd);
817 status = cmpc_get_brightness(handle, &brightness);
818 if (ACPI_SUCCESS(status))
819 return brightness;
820 else
821 return -1;
822 }
823
cmpc_bl_update_status(struct backlight_device * bd)824 static int cmpc_bl_update_status(struct backlight_device *bd)
825 {
826 acpi_status status;
827 acpi_handle handle;
828
829 handle = bl_get_data(bd);
830 status = cmpc_set_brightness(handle, bd->props.brightness);
831 if (ACPI_SUCCESS(status))
832 return 0;
833 else
834 return -1;
835 }
836
837 static const struct backlight_ops cmpc_bl_ops = {
838 .get_brightness = cmpc_bl_get_brightness,
839 .update_status = cmpc_bl_update_status
840 };
841
842 /*
843 * RFKILL code.
844 */
845
cmpc_get_rfkill_wlan(acpi_handle handle,unsigned long long * value)846 static acpi_status cmpc_get_rfkill_wlan(acpi_handle handle,
847 unsigned long long *value)
848 {
849 union acpi_object param;
850 struct acpi_object_list input;
851 unsigned long long output;
852 acpi_status status;
853
854 param.type = ACPI_TYPE_INTEGER;
855 param.integer.value = 0xC1;
856 input.count = 1;
857 input.pointer = ¶m;
858 status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
859 if (ACPI_SUCCESS(status))
860 *value = output;
861 return status;
862 }
863
cmpc_set_rfkill_wlan(acpi_handle handle,unsigned long long value)864 static acpi_status cmpc_set_rfkill_wlan(acpi_handle handle,
865 unsigned long long value)
866 {
867 union acpi_object param[2];
868 struct acpi_object_list input;
869 acpi_status status;
870 unsigned long long output;
871
872 param[0].type = ACPI_TYPE_INTEGER;
873 param[0].integer.value = 0xC1;
874 param[1].type = ACPI_TYPE_INTEGER;
875 param[1].integer.value = value;
876 input.count = 2;
877 input.pointer = param;
878 status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
879 return status;
880 }
881
cmpc_rfkill_query(struct rfkill * rfkill,void * data)882 static void cmpc_rfkill_query(struct rfkill *rfkill, void *data)
883 {
884 acpi_status status;
885 acpi_handle handle;
886 unsigned long long state;
887 bool blocked;
888
889 handle = data;
890 status = cmpc_get_rfkill_wlan(handle, &state);
891 if (ACPI_SUCCESS(status)) {
892 blocked = state & 1 ? false : true;
893 rfkill_set_sw_state(rfkill, blocked);
894 }
895 }
896
cmpc_rfkill_block(void * data,bool blocked)897 static int cmpc_rfkill_block(void *data, bool blocked)
898 {
899 acpi_status status;
900 acpi_handle handle;
901 unsigned long long state;
902 bool is_blocked;
903
904 handle = data;
905 status = cmpc_get_rfkill_wlan(handle, &state);
906 if (ACPI_FAILURE(status))
907 return -ENODEV;
908 /* Check if we really need to call cmpc_set_rfkill_wlan */
909 is_blocked = state & 1 ? false : true;
910 if (is_blocked != blocked) {
911 state = blocked ? 0 : 1;
912 status = cmpc_set_rfkill_wlan(handle, state);
913 if (ACPI_FAILURE(status))
914 return -ENODEV;
915 }
916 return 0;
917 }
918
919 static const struct rfkill_ops cmpc_rfkill_ops = {
920 .query = cmpc_rfkill_query,
921 .set_block = cmpc_rfkill_block,
922 };
923
924 /*
925 * Common backlight and rfkill code.
926 */
927
928 struct ipml200_dev {
929 struct backlight_device *bd;
930 struct rfkill *rf;
931 };
932
cmpc_ipml_add(struct acpi_device * acpi)933 static int cmpc_ipml_add(struct acpi_device *acpi)
934 {
935 int retval;
936 struct ipml200_dev *ipml;
937 struct backlight_properties props;
938
939 ipml = kmalloc(sizeof(*ipml), GFP_KERNEL);
940 if (ipml == NULL)
941 return -ENOMEM;
942
943 memset(&props, 0, sizeof(struct backlight_properties));
944 props.type = BACKLIGHT_PLATFORM;
945 props.max_brightness = 7;
946 ipml->bd = backlight_device_register("cmpc_bl", &acpi->dev,
947 acpi->handle, &cmpc_bl_ops,
948 &props);
949 if (IS_ERR(ipml->bd)) {
950 retval = PTR_ERR(ipml->bd);
951 goto out_bd;
952 }
953
954 ipml->rf = rfkill_alloc("cmpc_rfkill", &acpi->dev, RFKILL_TYPE_WLAN,
955 &cmpc_rfkill_ops, acpi->handle);
956 /*
957 * If RFKILL is disabled, rfkill_alloc will return ERR_PTR(-ENODEV).
958 * This is OK, however, since all other uses of the device will not
959 * dereference it.
960 */
961 if (ipml->rf) {
962 retval = rfkill_register(ipml->rf);
963 if (retval) {
964 rfkill_destroy(ipml->rf);
965 ipml->rf = NULL;
966 }
967 }
968
969 dev_set_drvdata(&acpi->dev, ipml);
970 return 0;
971
972 out_bd:
973 kfree(ipml);
974 return retval;
975 }
976
cmpc_ipml_remove(struct acpi_device * acpi)977 static void cmpc_ipml_remove(struct acpi_device *acpi)
978 {
979 struct ipml200_dev *ipml;
980
981 ipml = dev_get_drvdata(&acpi->dev);
982
983 backlight_device_unregister(ipml->bd);
984
985 if (ipml->rf) {
986 rfkill_unregister(ipml->rf);
987 rfkill_destroy(ipml->rf);
988 }
989
990 kfree(ipml);
991 }
992
993 static const struct acpi_device_id cmpc_ipml_device_ids[] = {
994 {CMPC_IPML_HID, 0},
995 {"", 0}
996 };
997
998 static struct acpi_driver cmpc_ipml_acpi_driver = {
999 .owner = THIS_MODULE,
1000 .name = "cmpc",
1001 .class = "cmpc",
1002 .ids = cmpc_ipml_device_ids,
1003 .ops = {
1004 .add = cmpc_ipml_add,
1005 .remove = cmpc_ipml_remove
1006 }
1007 };
1008
1009
1010 /*
1011 * Extra keys code.
1012 */
1013 static int cmpc_keys_codes[] = {
1014 KEY_UNKNOWN,
1015 KEY_WLAN,
1016 KEY_SWITCHVIDEOMODE,
1017 KEY_BRIGHTNESSDOWN,
1018 KEY_BRIGHTNESSUP,
1019 KEY_VENDOR,
1020 KEY_UNKNOWN,
1021 KEY_CAMERA,
1022 KEY_BACK,
1023 KEY_FORWARD,
1024 KEY_UNKNOWN,
1025 KEY_WLAN, /* NL3: 0x8b (press), 0x9b (release) */
1026 KEY_MAX
1027 };
1028
cmpc_keys_handler(struct acpi_device * dev,u32 event)1029 static void cmpc_keys_handler(struct acpi_device *dev, u32 event)
1030 {
1031 struct input_dev *inputdev;
1032 int code = KEY_MAX;
1033
1034 if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes))
1035 code = cmpc_keys_codes[event & 0x0F];
1036 inputdev = dev_get_drvdata(&dev->dev);
1037 input_report_key(inputdev, code, !(event & 0x10));
1038 input_sync(inputdev);
1039 }
1040
cmpc_keys_idev_init(struct input_dev * inputdev)1041 static void cmpc_keys_idev_init(struct input_dev *inputdev)
1042 {
1043 int i;
1044
1045 set_bit(EV_KEY, inputdev->evbit);
1046 for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++)
1047 set_bit(cmpc_keys_codes[i], inputdev->keybit);
1048 }
1049
cmpc_keys_add(struct acpi_device * acpi)1050 static int cmpc_keys_add(struct acpi_device *acpi)
1051 {
1052 return cmpc_add_acpi_notify_device(acpi, "cmpc_keys",
1053 cmpc_keys_idev_init);
1054 }
1055
cmpc_keys_remove(struct acpi_device * acpi)1056 static void cmpc_keys_remove(struct acpi_device *acpi)
1057 {
1058 cmpc_remove_acpi_notify_device(acpi);
1059 }
1060
1061 static const struct acpi_device_id cmpc_keys_device_ids[] = {
1062 {CMPC_KEYS_HID, 0},
1063 {"", 0}
1064 };
1065
1066 static struct acpi_driver cmpc_keys_acpi_driver = {
1067 .owner = THIS_MODULE,
1068 .name = "cmpc_keys",
1069 .class = "cmpc_keys",
1070 .ids = cmpc_keys_device_ids,
1071 .ops = {
1072 .add = cmpc_keys_add,
1073 .remove = cmpc_keys_remove,
1074 .notify = cmpc_keys_handler,
1075 }
1076 };
1077
1078
1079 /*
1080 * General init/exit code.
1081 */
1082
cmpc_init(void)1083 static int cmpc_init(void)
1084 {
1085 int r;
1086
1087 r = acpi_bus_register_driver(&cmpc_keys_acpi_driver);
1088 if (r)
1089 goto failed_keys;
1090
1091 r = acpi_bus_register_driver(&cmpc_ipml_acpi_driver);
1092 if (r)
1093 goto failed_bl;
1094
1095 r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver);
1096 if (r)
1097 goto failed_tablet;
1098
1099 r = acpi_bus_register_driver(&cmpc_accel_acpi_driver);
1100 if (r)
1101 goto failed_accel;
1102
1103 r = acpi_bus_register_driver(&cmpc_accel_acpi_driver_v4);
1104 if (r)
1105 goto failed_accel_v4;
1106
1107 return r;
1108
1109 failed_accel_v4:
1110 acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
1111
1112 failed_accel:
1113 acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
1114
1115 failed_tablet:
1116 acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
1117
1118 failed_bl:
1119 acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
1120
1121 failed_keys:
1122 return r;
1123 }
1124
cmpc_exit(void)1125 static void cmpc_exit(void)
1126 {
1127 acpi_bus_unregister_driver(&cmpc_accel_acpi_driver_v4);
1128 acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
1129 acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
1130 acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
1131 acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
1132 }
1133
1134 module_init(cmpc_init);
1135 module_exit(cmpc_exit);
1136
1137 static const struct acpi_device_id cmpc_device_ids[] __maybe_unused = {
1138 {CMPC_ACCEL_HID, 0},
1139 {CMPC_ACCEL_HID_V4, 0},
1140 {CMPC_TABLET_HID, 0},
1141 {CMPC_IPML_HID, 0},
1142 {CMPC_KEYS_HID, 0},
1143 {"", 0}
1144 };
1145
1146 MODULE_DEVICE_TABLE(acpi, cmpc_device_ids);
1147