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