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20#include <linux/init.h>
21#include <linux/module.h>
22#include <linux/slab.h>
23#include <linux/workqueue.h>
24#include <acpi/acpi_drivers.h>
25#include <linux/backlight.h>
26#include <linux/input.h>
27#include <linux/rfkill.h>
28
29MODULE_LICENSE("GPL");
30
31
32struct cmpc_accel {
33 int sensitivity;
34};
35
36#define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
37
38
39#define CMPC_ACCEL_HID "ACCE0000"
40#define CMPC_TABLET_HID "TBLT0000"
41#define CMPC_IPML_HID "IPML200"
42#define CMPC_KEYS_HID "FnBT0000"
43
44
45
46
47
48typedef void (*input_device_init)(struct input_dev *dev);
49
50static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name,
51 input_device_init idev_init)
52{
53 struct input_dev *inputdev;
54 int error;
55
56 inputdev = input_allocate_device();
57 if (!inputdev)
58 return -ENOMEM;
59 inputdev->name = name;
60 inputdev->dev.parent = &acpi->dev;
61 idev_init(inputdev);
62 error = input_register_device(inputdev);
63 if (error) {
64 input_free_device(inputdev);
65 return error;
66 }
67 dev_set_drvdata(&acpi->dev, inputdev);
68 return 0;
69}
70
71static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
72{
73 struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
74 input_unregister_device(inputdev);
75 return 0;
76}
77
78
79
80
81static acpi_status cmpc_start_accel(acpi_handle handle)
82{
83 union acpi_object param[2];
84 struct acpi_object_list input;
85 acpi_status status;
86
87 param[0].type = ACPI_TYPE_INTEGER;
88 param[0].integer.value = 0x3;
89 param[1].type = ACPI_TYPE_INTEGER;
90 input.count = 2;
91 input.pointer = param;
92 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
93 return status;
94}
95
96static acpi_status cmpc_stop_accel(acpi_handle handle)
97{
98 union acpi_object param[2];
99 struct acpi_object_list input;
100 acpi_status status;
101
102 param[0].type = ACPI_TYPE_INTEGER;
103 param[0].integer.value = 0x4;
104 param[1].type = ACPI_TYPE_INTEGER;
105 input.count = 2;
106 input.pointer = param;
107 status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
108 return status;
109}
110
111static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val)
112{
113 union acpi_object param[2];
114 struct acpi_object_list input;
115
116 param[0].type = ACPI_TYPE_INTEGER;
117 param[0].integer.value = 0x02;
118 param[1].type = ACPI_TYPE_INTEGER;
119 param[1].integer.value = val;
120 input.count = 2;
121 input.pointer = param;
122 return acpi_evaluate_object(handle, "ACMD", &input, NULL);
123}
124
125static acpi_status cmpc_get_accel(acpi_handle handle,
126 unsigned char *x,
127 unsigned char *y,
128 unsigned char *z)
129{
130 union acpi_object param[2];
131 struct acpi_object_list input;
132 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, 0 };
133 unsigned char *locs;
134 acpi_status status;
135
136 param[0].type = ACPI_TYPE_INTEGER;
137 param[0].integer.value = 0x01;
138 param[1].type = ACPI_TYPE_INTEGER;
139 input.count = 2;
140 input.pointer = param;
141 status = acpi_evaluate_object(handle, "ACMD", &input, &output);
142 if (ACPI_SUCCESS(status)) {
143 union acpi_object *obj;
144 obj = output.pointer;
145 locs = obj->buffer.pointer;
146 *x = locs[0];
147 *y = locs[1];
148 *z = locs[2];
149 kfree(output.pointer);
150 }
151 return status;
152}
153
154static void cmpc_accel_handler(struct acpi_device *dev, u32 event)
155{
156 if (event == 0x81) {
157 unsigned char x, y, z;
158 acpi_status status;
159
160 status = cmpc_get_accel(dev->handle, &x, &y, &z);
161 if (ACPI_SUCCESS(status)) {
162 struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
163
164 input_report_abs(inputdev, ABS_X, x);
165 input_report_abs(inputdev, ABS_Y, y);
166 input_report_abs(inputdev, ABS_Z, z);
167 input_sync(inputdev);
168 }
169 }
170}
171
172static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
173 struct device_attribute *attr,
174 char *buf)
175{
176 struct acpi_device *acpi;
177 struct input_dev *inputdev;
178 struct cmpc_accel *accel;
179
180 acpi = to_acpi_device(dev);
181 inputdev = dev_get_drvdata(&acpi->dev);
182 accel = dev_get_drvdata(&inputdev->dev);
183
184 return sprintf(buf, "%d\n", accel->sensitivity);
185}
186
187static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
190{
191 struct acpi_device *acpi;
192 struct input_dev *inputdev;
193 struct cmpc_accel *accel;
194 unsigned long sensitivity;
195 int r;
196
197 acpi = to_acpi_device(dev);
198 inputdev = dev_get_drvdata(&acpi->dev);
199 accel = dev_get_drvdata(&inputdev->dev);
200
201 r = strict_strtoul(buf, 0, &sensitivity);
202 if (r)
203 return r;
204
205 accel->sensitivity = sensitivity;
206 cmpc_accel_set_sensitivity(acpi->handle, sensitivity);
207
208 return strnlen(buf, count);
209}
210
211static struct device_attribute cmpc_accel_sensitivity_attr = {
212 .attr = { .name = "sensitivity", .mode = 0660 },
213 .show = cmpc_accel_sensitivity_show,
214 .store = cmpc_accel_sensitivity_store
215};
216
217static int cmpc_accel_open(struct input_dev *input)
218{
219 struct acpi_device *acpi;
220
221 acpi = to_acpi_device(input->dev.parent);
222 if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle)))
223 return 0;
224 return -EIO;
225}
226
227static void cmpc_accel_close(struct input_dev *input)
228{
229 struct acpi_device *acpi;
230
231 acpi = to_acpi_device(input->dev.parent);
232 cmpc_stop_accel(acpi->handle);
233}
234
235static void cmpc_accel_idev_init(struct input_dev *inputdev)
236{
237 set_bit(EV_ABS, inputdev->evbit);
238 input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0);
239 input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0);
240 input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0);
241 inputdev->open = cmpc_accel_open;
242 inputdev->close = cmpc_accel_close;
243}
244
245static int cmpc_accel_add(struct acpi_device *acpi)
246{
247 int error;
248 struct input_dev *inputdev;
249 struct cmpc_accel *accel;
250
251 accel = kmalloc(sizeof(*accel), GFP_KERNEL);
252 if (!accel)
253 return -ENOMEM;
254
255 accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
256 cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity);
257
258 error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
259 if (error)
260 goto failed_file;
261
262 error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel",
263 cmpc_accel_idev_init);
264 if (error)
265 goto failed_input;
266
267 inputdev = dev_get_drvdata(&acpi->dev);
268 dev_set_drvdata(&inputdev->dev, accel);
269
270 return 0;
271
272failed_input:
273 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
274failed_file:
275 kfree(accel);
276 return error;
277}
278
279static int cmpc_accel_remove(struct acpi_device *acpi, int type)
280{
281 struct input_dev *inputdev;
282 struct cmpc_accel *accel;
283
284 inputdev = dev_get_drvdata(&acpi->dev);
285 accel = dev_get_drvdata(&inputdev->dev);
286
287 device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
288 return cmpc_remove_acpi_notify_device(acpi);
289}
290
291static const struct acpi_device_id cmpc_accel_device_ids[] = {
292 {CMPC_ACCEL_HID, 0},
293 {"", 0}
294};
295
296static struct acpi_driver cmpc_accel_acpi_driver = {
297 .owner = THIS_MODULE,
298 .name = "cmpc_accel",
299 .class = "cmpc_accel",
300 .ids = cmpc_accel_device_ids,
301 .ops = {
302 .add = cmpc_accel_add,
303 .remove = cmpc_accel_remove,
304 .notify = cmpc_accel_handler,
305 }
306};
307
308
309
310
311
312static acpi_status cmpc_get_tablet(acpi_handle handle,
313 unsigned long long *value)
314{
315 union acpi_object param;
316 struct acpi_object_list input;
317 unsigned long long output;
318 acpi_status status;
319
320 param.type = ACPI_TYPE_INTEGER;
321 param.integer.value = 0x01;
322 input.count = 1;
323 input.pointer = ¶m;
324 status = acpi_evaluate_integer(handle, "TCMD", &input, &output);
325 if (ACPI_SUCCESS(status))
326 *value = output;
327 return status;
328}
329
330static void cmpc_tablet_handler(struct acpi_device *dev, u32 event)
331{
332 unsigned long long val = 0;
333 struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
334
335 if (event == 0x81) {
336 if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val)))
337 input_report_switch(inputdev, SW_TABLET_MODE, !val);
338 }
339}
340
341static void cmpc_tablet_idev_init(struct input_dev *inputdev)
342{
343 unsigned long long val = 0;
344 struct acpi_device *acpi;
345
346 set_bit(EV_SW, inputdev->evbit);
347 set_bit(SW_TABLET_MODE, inputdev->swbit);
348
349 acpi = to_acpi_device(inputdev->dev.parent);
350 if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
351 input_report_switch(inputdev, SW_TABLET_MODE, !val);
352}
353
354static int cmpc_tablet_add(struct acpi_device *acpi)
355{
356 return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet",
357 cmpc_tablet_idev_init);
358}
359
360static int cmpc_tablet_remove(struct acpi_device *acpi, int type)
361{
362 return cmpc_remove_acpi_notify_device(acpi);
363}
364
365static int cmpc_tablet_resume(struct acpi_device *acpi)
366{
367 struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
368 unsigned long long val = 0;
369 if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
370 input_report_switch(inputdev, SW_TABLET_MODE, !val);
371 return 0;
372}
373
374static const struct acpi_device_id cmpc_tablet_device_ids[] = {
375 {CMPC_TABLET_HID, 0},
376 {"", 0}
377};
378
379static struct acpi_driver cmpc_tablet_acpi_driver = {
380 .owner = THIS_MODULE,
381 .name = "cmpc_tablet",
382 .class = "cmpc_tablet",
383 .ids = cmpc_tablet_device_ids,
384 .ops = {
385 .add = cmpc_tablet_add,
386 .remove = cmpc_tablet_remove,
387 .resume = cmpc_tablet_resume,
388 .notify = cmpc_tablet_handler,
389 }
390};
391
392
393
394
395
396
397static acpi_status cmpc_get_brightness(acpi_handle handle,
398 unsigned long long *value)
399{
400 union acpi_object param;
401 struct acpi_object_list input;
402 unsigned long long output;
403 acpi_status status;
404
405 param.type = ACPI_TYPE_INTEGER;
406 param.integer.value = 0xC0;
407 input.count = 1;
408 input.pointer = ¶m;
409 status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
410 if (ACPI_SUCCESS(status))
411 *value = output;
412 return status;
413}
414
415static acpi_status cmpc_set_brightness(acpi_handle handle,
416 unsigned long long value)
417{
418 union acpi_object param[2];
419 struct acpi_object_list input;
420 acpi_status status;
421 unsigned long long output;
422
423 param[0].type = ACPI_TYPE_INTEGER;
424 param[0].integer.value = 0xC0;
425 param[1].type = ACPI_TYPE_INTEGER;
426 param[1].integer.value = value;
427 input.count = 2;
428 input.pointer = param;
429 status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
430 return status;
431}
432
433static int cmpc_bl_get_brightness(struct backlight_device *bd)
434{
435 acpi_status status;
436 acpi_handle handle;
437 unsigned long long brightness;
438
439 handle = bl_get_data(bd);
440 status = cmpc_get_brightness(handle, &brightness);
441 if (ACPI_SUCCESS(status))
442 return brightness;
443 else
444 return -1;
445}
446
447static int cmpc_bl_update_status(struct backlight_device *bd)
448{
449 acpi_status status;
450 acpi_handle handle;
451
452 handle = bl_get_data(bd);
453 status = cmpc_set_brightness(handle, bd->props.brightness);
454 if (ACPI_SUCCESS(status))
455 return 0;
456 else
457 return -1;
458}
459
460static const struct backlight_ops cmpc_bl_ops = {
461 .get_brightness = cmpc_bl_get_brightness,
462 .update_status = cmpc_bl_update_status
463};
464
465
466
467
468
469static acpi_status cmpc_get_rfkill_wlan(acpi_handle handle,
470 unsigned long long *value)
471{
472 union acpi_object param;
473 struct acpi_object_list input;
474 unsigned long long output;
475 acpi_status status;
476
477 param.type = ACPI_TYPE_INTEGER;
478 param.integer.value = 0xC1;
479 input.count = 1;
480 input.pointer = ¶m;
481 status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
482 if (ACPI_SUCCESS(status))
483 *value = output;
484 return status;
485}
486
487static acpi_status cmpc_set_rfkill_wlan(acpi_handle handle,
488 unsigned long long value)
489{
490 union acpi_object param[2];
491 struct acpi_object_list input;
492 acpi_status status;
493 unsigned long long output;
494
495 param[0].type = ACPI_TYPE_INTEGER;
496 param[0].integer.value = 0xC1;
497 param[1].type = ACPI_TYPE_INTEGER;
498 param[1].integer.value = value;
499 input.count = 2;
500 input.pointer = param;
501 status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
502 return status;
503}
504
505static void cmpc_rfkill_query(struct rfkill *rfkill, void *data)
506{
507 acpi_status status;
508 acpi_handle handle;
509 unsigned long long state;
510 bool blocked;
511
512 handle = data;
513 status = cmpc_get_rfkill_wlan(handle, &state);
514 if (ACPI_SUCCESS(status)) {
515 blocked = state & 1 ? false : true;
516 rfkill_set_sw_state(rfkill, blocked);
517 }
518}
519
520static int cmpc_rfkill_block(void *data, bool blocked)
521{
522 acpi_status status;
523 acpi_handle handle;
524 unsigned long long state;
525 bool is_blocked;
526
527 handle = data;
528 status = cmpc_get_rfkill_wlan(handle, &state);
529 if (ACPI_FAILURE(status))
530 return -ENODEV;
531
532 is_blocked = state & 1 ? false : true;
533 if (is_blocked != blocked) {
534 state = blocked ? 0 : 1;
535 status = cmpc_set_rfkill_wlan(handle, state);
536 if (ACPI_FAILURE(status))
537 return -ENODEV;
538 }
539 return 0;
540}
541
542static const struct rfkill_ops cmpc_rfkill_ops = {
543 .query = cmpc_rfkill_query,
544 .set_block = cmpc_rfkill_block,
545};
546
547
548
549
550
551struct ipml200_dev {
552 struct backlight_device *bd;
553 struct rfkill *rf;
554};
555
556static int cmpc_ipml_add(struct acpi_device *acpi)
557{
558 int retval;
559 struct ipml200_dev *ipml;
560 struct backlight_properties props;
561
562 ipml = kmalloc(sizeof(*ipml), GFP_KERNEL);
563 if (ipml == NULL)
564 return -ENOMEM;
565
566 memset(&props, 0, sizeof(struct backlight_properties));
567 props.type = BACKLIGHT_PLATFORM;
568 props.max_brightness = 7;
569 ipml->bd = backlight_device_register("cmpc_bl", &acpi->dev,
570 acpi->handle, &cmpc_bl_ops,
571 &props);
572 if (IS_ERR(ipml->bd)) {
573 retval = PTR_ERR(ipml->bd);
574 goto out_bd;
575 }
576
577 ipml->rf = rfkill_alloc("cmpc_rfkill", &acpi->dev, RFKILL_TYPE_WLAN,
578 &cmpc_rfkill_ops, acpi->handle);
579
580
581
582
583
584 if (ipml->rf) {
585 retval = rfkill_register(ipml->rf);
586 if (retval) {
587 rfkill_destroy(ipml->rf);
588 ipml->rf = NULL;
589 }
590 }
591
592 dev_set_drvdata(&acpi->dev, ipml);
593 return 0;
594
595out_bd:
596 kfree(ipml);
597 return retval;
598}
599
600static int cmpc_ipml_remove(struct acpi_device *acpi, int type)
601{
602 struct ipml200_dev *ipml;
603
604 ipml = dev_get_drvdata(&acpi->dev);
605
606 backlight_device_unregister(ipml->bd);
607
608 if (ipml->rf) {
609 rfkill_unregister(ipml->rf);
610 rfkill_destroy(ipml->rf);
611 }
612
613 kfree(ipml);
614
615 return 0;
616}
617
618static const struct acpi_device_id cmpc_ipml_device_ids[] = {
619 {CMPC_IPML_HID, 0},
620 {"", 0}
621};
622
623static struct acpi_driver cmpc_ipml_acpi_driver = {
624 .owner = THIS_MODULE,
625 .name = "cmpc",
626 .class = "cmpc",
627 .ids = cmpc_ipml_device_ids,
628 .ops = {
629 .add = cmpc_ipml_add,
630 .remove = cmpc_ipml_remove
631 }
632};
633
634
635
636
637
638static int cmpc_keys_codes[] = {
639 KEY_UNKNOWN,
640 KEY_WLAN,
641 KEY_SWITCHVIDEOMODE,
642 KEY_BRIGHTNESSDOWN,
643 KEY_BRIGHTNESSUP,
644 KEY_VENDOR,
645 KEY_UNKNOWN,
646 KEY_CAMERA,
647 KEY_BACK,
648 KEY_FORWARD,
649 KEY_MAX
650};
651
652static void cmpc_keys_handler(struct acpi_device *dev, u32 event)
653{
654 struct input_dev *inputdev;
655 int code = KEY_MAX;
656
657 if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes))
658 code = cmpc_keys_codes[event & 0x0F];
659 inputdev = dev_get_drvdata(&dev->dev);
660 input_report_key(inputdev, code, !(event & 0x10));
661 input_sync(inputdev);
662}
663
664static void cmpc_keys_idev_init(struct input_dev *inputdev)
665{
666 int i;
667
668 set_bit(EV_KEY, inputdev->evbit);
669 for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++)
670 set_bit(cmpc_keys_codes[i], inputdev->keybit);
671}
672
673static int cmpc_keys_add(struct acpi_device *acpi)
674{
675 return cmpc_add_acpi_notify_device(acpi, "cmpc_keys",
676 cmpc_keys_idev_init);
677}
678
679static int cmpc_keys_remove(struct acpi_device *acpi, int type)
680{
681 return cmpc_remove_acpi_notify_device(acpi);
682}
683
684static const struct acpi_device_id cmpc_keys_device_ids[] = {
685 {CMPC_KEYS_HID, 0},
686 {"", 0}
687};
688
689static struct acpi_driver cmpc_keys_acpi_driver = {
690 .owner = THIS_MODULE,
691 .name = "cmpc_keys",
692 .class = "cmpc_keys",
693 .ids = cmpc_keys_device_ids,
694 .ops = {
695 .add = cmpc_keys_add,
696 .remove = cmpc_keys_remove,
697 .notify = cmpc_keys_handler,
698 }
699};
700
701
702
703
704
705
706static int cmpc_init(void)
707{
708 int r;
709
710 r = acpi_bus_register_driver(&cmpc_keys_acpi_driver);
711 if (r)
712 goto failed_keys;
713
714 r = acpi_bus_register_driver(&cmpc_ipml_acpi_driver);
715 if (r)
716 goto failed_bl;
717
718 r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver);
719 if (r)
720 goto failed_tablet;
721
722 r = acpi_bus_register_driver(&cmpc_accel_acpi_driver);
723 if (r)
724 goto failed_accel;
725
726 return r;
727
728failed_accel:
729 acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
730
731failed_tablet:
732 acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
733
734failed_bl:
735 acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
736
737failed_keys:
738 return r;
739}
740
741static void cmpc_exit(void)
742{
743 acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
744 acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
745 acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
746 acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
747}
748
749module_init(cmpc_init);
750module_exit(cmpc_exit);
751
752static const struct acpi_device_id cmpc_device_ids[] = {
753 {CMPC_ACCEL_HID, 0},
754 {CMPC_TABLET_HID, 0},
755 {CMPC_IPML_HID, 0},
756 {CMPC_KEYS_HID, 0},
757 {"", 0}
758};
759
760MODULE_DEVICE_TABLE(acpi, cmpc_device_ids);
761
