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asus-wmi: Enable autorepeat for hotkey input device
[linux-2.6.git] / drivers / platform / x86 / asus-wmi.c
blob0fce7de77b1c029ffffffcd339ac080d043ab0b8
1 /*
2 * Asus PC WMI hotkey driver
3 *
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
6 *
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/fb.h>
37 #include <linux/backlight.h>
38 #include <linux/leds.h>
39 #include <linux/rfkill.h>
40 #include <linux/pci.h>
41 #include <linux/pci_hotplug.h>
42 #include <linux/hwmon.h>
43 #include <linux/hwmon-sysfs.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/platform_device.h>
47 #include <acpi/acpi_bus.h>
48 #include <acpi/acpi_drivers.h>
49
50 #include "asus-wmi.h"
51
52 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
53 "Yong Wang <yong.y.wang@intel.com>");
54 MODULE_DESCRIPTION("Asus Generic WMI Driver");
55 MODULE_LICENSE("GPL");
56
57 #define to_platform_driver(drv) \
58 (container_of((drv), struct platform_driver, driver))
59
60 #define to_asus_wmi_driver(pdrv) \
61 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
62
63 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
64
65 #define NOTIFY_BRNUP_MIN 0x11
66 #define NOTIFY_BRNUP_MAX 0x1f
67 #define NOTIFY_BRNDOWN_MIN 0x20
68 #define NOTIFY_BRNDOWN_MAX 0x2e
69
70 /* WMI Methods */
71 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
72 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
73 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
74 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
75 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
76 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
77 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
78 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
79 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
80 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
81 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
82 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
83 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
84 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
85 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
86 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
87 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
88 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
89 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
90
91 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
92
93 /* Wireless */
94 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
95 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
96 #define ASUS_WMI_DEVID_WLAN 0x00010011
97 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
98 #define ASUS_WMI_DEVID_GPS 0x00010015
99 #define ASUS_WMI_DEVID_WIMAX 0x00010017
100 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
101 #define ASUS_WMI_DEVID_UWB 0x00010021
102
103 /* Leds */
104 /* 0x000200XX and 0x000400XX */
105
106 /* Backlight and Brightness */
107 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
108 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
109 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
110 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
111
112 /* Misc */
113 #define ASUS_WMI_DEVID_CAMERA 0x00060013
114
115 /* Storage */
116 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
117
118 /* Input */
119 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
120 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
121
122 /* Fan, Thermal */
123 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
124 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
125
126 /* Power */
127 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
128
129 /* DSTS masks */
130 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
131 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
132 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
133 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
134 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
135 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
136 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
137
138 struct bios_args {
139 u32 arg0;
140 u32 arg1;
141 } __packed;
142
143 /*
144 * <platform>/ - debugfs root directory
145 * dev_id - current dev_id
146 * ctrl_param - current ctrl_param
147 * method_id - current method_id
148 * devs - call DEVS(dev_id, ctrl_param) and print result
149 * dsts - call DSTS(dev_id) and print result
150 * call - call method_id(dev_id, ctrl_param) and print result
151 */
152 struct asus_wmi_debug {
153 struct dentry *root;
154 u32 method_id;
155 u32 dev_id;
156 u32 ctrl_param;
157 };
158
159 struct asus_rfkill {
160 struct asus_wmi *asus;
161 struct rfkill *rfkill;
162 u32 dev_id;
163 };
164
165 struct asus_wmi {
166 int dsts_id;
167 int spec;
168 int sfun;
169
170 struct input_dev *inputdev;
171 struct backlight_device *backlight_device;
172 struct device *hwmon_device;
173 struct platform_device *platform_device;
174
175 struct led_classdev tpd_led;
176 int tpd_led_wk;
177 struct workqueue_struct *led_workqueue;
178 struct work_struct tpd_led_work;
179
180 struct asus_rfkill wlan;
181 struct asus_rfkill bluetooth;
182 struct asus_rfkill wimax;
183 struct asus_rfkill wwan3g;
184
185 struct hotplug_slot *hotplug_slot;
186 struct mutex hotplug_lock;
187 struct mutex wmi_lock;
188 struct workqueue_struct *hotplug_workqueue;
189 struct work_struct hotplug_work;
190
191 struct asus_wmi_debug debug;
192
193 struct asus_wmi_driver *driver;
194 };
195
196 static int asus_wmi_input_init(struct asus_wmi *asus)
197 {
198 int err;
199
200 asus->inputdev = input_allocate_device();
201 if (!asus->inputdev)
202 return -ENOMEM;
203
204 asus->inputdev->name = asus->driver->input_name;
205 asus->inputdev->phys = asus->driver->input_phys;
206 asus->inputdev->id.bustype = BUS_HOST;
207 asus->inputdev->dev.parent = &asus->platform_device->dev;
208 set_bit(EV_REP, asus->inputdev->evbit);
209
210 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
211 if (err)
212 goto err_free_dev;
213
214 err = input_register_device(asus->inputdev);
215 if (err)
216 goto err_free_keymap;
217
218 return 0;
219
220 err_free_keymap:
221 sparse_keymap_free(asus->inputdev);
222 err_free_dev:
223 input_free_device(asus->inputdev);
224 return err;
225 }
226
227 static void asus_wmi_input_exit(struct asus_wmi *asus)
228 {
229 if (asus->inputdev) {
230 sparse_keymap_free(asus->inputdev);
231 input_unregister_device(asus->inputdev);
232 }
233
234 asus->inputdev = NULL;
235 }
236
237 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
238 u32 *retval)
239 {
240 struct bios_args args = {
241 .arg0 = arg0,
242 .arg1 = arg1,
243 };
244 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
245 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
246 acpi_status status;
247 union acpi_object *obj;
248 u32 tmp;
249
250 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
251 &input, &output);
252
253 if (ACPI_FAILURE(status))
254 goto exit;
255
256 obj = (union acpi_object *)output.pointer;
257 if (obj && obj->type == ACPI_TYPE_INTEGER)
258 tmp = (u32) obj->integer.value;
259 else
260 tmp = 0;
261
262 if (retval)
263 *retval = tmp;
264
265 kfree(obj);
266
267 exit:
268 if (ACPI_FAILURE(status))
269 return -EIO;
270
271 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
272 return -ENODEV;
273
274 return 0;
275 }
276
277 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
278 {
279 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
280 }
281
282 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
283 u32 *retval)
284 {
285 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
286 ctrl_param, retval);
287 }
288
289 /* Helper for special devices with magic return codes */
290 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
291 u32 dev_id, u32 mask)
292 {
293 u32 retval = 0;
294 int err;
295
296 err = asus_wmi_get_devstate(asus, dev_id, &retval);
297
298 if (err < 0)
299 return err;
300
301 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
302 return -ENODEV;
303
304 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
305 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
306 return -ENODEV;
307 }
308
309 return retval & mask;
310 }
311
312 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
313 {
314 return asus_wmi_get_devstate_bits(asus, dev_id,
315 ASUS_WMI_DSTS_STATUS_BIT);
316 }
317
318 /*
319 * LEDs
320 */
321 /*
322 * These functions actually update the LED's, and are called from a
323 * workqueue. By doing this as separate work rather than when the LED
324 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
325 * potentially bad time, such as a timer interrupt.
326 */
327 static void tpd_led_update(struct work_struct *work)
328 {
329 int ctrl_param;
330 struct asus_wmi *asus;
331
332 asus = container_of(work, struct asus_wmi, tpd_led_work);
333
334 ctrl_param = asus->tpd_led_wk;
335 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
336 }
337
338 static void tpd_led_set(struct led_classdev *led_cdev,
339 enum led_brightness value)
340 {
341 struct asus_wmi *asus;
342
343 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
344
345 asus->tpd_led_wk = !!value;
346 queue_work(asus->led_workqueue, &asus->tpd_led_work);
347 }
348
349 static int read_tpd_led_state(struct asus_wmi *asus)
350 {
351 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
352 }
353
354 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
355 {
356 struct asus_wmi *asus;
357
358 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
359
360 return read_tpd_led_state(asus);
361 }
362
363 static int asus_wmi_led_init(struct asus_wmi *asus)
364 {
365 int rv;
366
367 if (read_tpd_led_state(asus) < 0)
368 return 0;
369
370 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
371 if (!asus->led_workqueue)
372 return -ENOMEM;
373 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
374
375 asus->tpd_led.name = "asus::touchpad";
376 asus->tpd_led.brightness_set = tpd_led_set;
377 asus->tpd_led.brightness_get = tpd_led_get;
378 asus->tpd_led.max_brightness = 1;
379
380 rv = led_classdev_register(&asus->platform_device->dev, &asus->tpd_led);
381 if (rv) {
382 destroy_workqueue(asus->led_workqueue);
383 return rv;
384 }
385
386 return 0;
387 }
388
389 static void asus_wmi_led_exit(struct asus_wmi *asus)
390 {
391 if (asus->tpd_led.dev)
392 led_classdev_unregister(&asus->tpd_led);
393 if (asus->led_workqueue)
394 destroy_workqueue(asus->led_workqueue);
395 }
396
397 /*
398 * PCI hotplug (for wlan rfkill)
399 */
400 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
401 {
402 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
403
404 if (result < 0)
405 return false;
406 return !result;
407 }
408
409 static void asus_rfkill_hotplug(struct asus_wmi *asus)
410 {
411 struct pci_dev *dev;
412 struct pci_bus *bus;
413 bool blocked;
414 bool absent;
415 u32 l;
416
417 mutex_lock(&asus->wmi_lock);
418 blocked = asus_wlan_rfkill_blocked(asus);
419 mutex_unlock(&asus->wmi_lock);
420
421 mutex_lock(&asus->hotplug_lock);
422
423 if (asus->wlan.rfkill)
424 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
425
426 if (asus->hotplug_slot) {
427 bus = pci_find_bus(0, 1);
428 if (!bus) {
429 pr_warn("Unable to find PCI bus 1?\n");
430 goto out_unlock;
431 }
432
433 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
434 pr_err("Unable to read PCI config space?\n");
435 goto out_unlock;
436 }
437 absent = (l == 0xffffffff);
438
439 if (blocked != absent) {
440 pr_warn("BIOS says wireless lan is %s, "
441 "but the pci device is %s\n",
442 blocked ? "blocked" : "unblocked",
443 absent ? "absent" : "present");
444 pr_warn("skipped wireless hotplug as probably "
445 "inappropriate for this model\n");
446 goto out_unlock;
447 }
448
449 if (!blocked) {
450 dev = pci_get_slot(bus, 0);
451 if (dev) {
452 /* Device already present */
453 pci_dev_put(dev);
454 goto out_unlock;
455 }
456 dev = pci_scan_single_device(bus, 0);
457 if (dev) {
458 pci_bus_assign_resources(bus);
459 if (pci_bus_add_device(dev))
460 pr_err("Unable to hotplug wifi\n");
461 }
462 } else {
463 dev = pci_get_slot(bus, 0);
464 if (dev) {
465 pci_remove_bus_device(dev);
466 pci_dev_put(dev);
467 }
468 }
469 }
470
471 out_unlock:
472 mutex_unlock(&asus->hotplug_lock);
473 }
474
475 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
476 {
477 struct asus_wmi *asus = data;
478
479 if (event != ACPI_NOTIFY_BUS_CHECK)
480 return;
481
482 /*
483 * We can't call directly asus_rfkill_hotplug because most
484 * of the time WMBC is still being executed and not reetrant.
485 * There is currently no way to tell ACPICA that we want this
486 * method to be serialized, we schedule a asus_rfkill_hotplug
487 * call later, in a safer context.
488 */
489 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
490 }
491
492 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
493 {
494 acpi_status status;
495 acpi_handle handle;
496
497 status = acpi_get_handle(NULL, node, &handle);
498
499 if (ACPI_SUCCESS(status)) {
500 status = acpi_install_notify_handler(handle,
501 ACPI_SYSTEM_NOTIFY,
502 asus_rfkill_notify, asus);
503 if (ACPI_FAILURE(status))
504 pr_warn("Failed to register notify on %s\n", node);
505 } else
506 return -ENODEV;
507
508 return 0;
509 }
510
511 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
512 {
513 acpi_status status = AE_OK;
514 acpi_handle handle;
515
516 status = acpi_get_handle(NULL, node, &handle);
517
518 if (ACPI_SUCCESS(status)) {
519 status = acpi_remove_notify_handler(handle,
520 ACPI_SYSTEM_NOTIFY,
521 asus_rfkill_notify);
522 if (ACPI_FAILURE(status))
523 pr_err("Error removing rfkill notify handler %s\n",
524 node);
525 }
526 }
527
528 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
529 u8 *value)
530 {
531 struct asus_wmi *asus = hotplug_slot->private;
532 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
533
534 if (result < 0)
535 return result;
536
537 *value = !!result;
538 return 0;
539 }
540
541 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
542 {
543 kfree(hotplug_slot->info);
544 kfree(hotplug_slot);
545 }
546
547 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
548 .owner = THIS_MODULE,
549 .get_adapter_status = asus_get_adapter_status,
550 .get_power_status = asus_get_adapter_status,
551 };
552
553 static void asus_hotplug_work(struct work_struct *work)
554 {
555 struct asus_wmi *asus;
556
557 asus = container_of(work, struct asus_wmi, hotplug_work);
558 asus_rfkill_hotplug(asus);
559 }
560
561 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
562 {
563 int ret = -ENOMEM;
564 struct pci_bus *bus = pci_find_bus(0, 1);
565
566 if (!bus) {
567 pr_err("Unable to find wifi PCI bus\n");
568 return -ENODEV;
569 }
570
571 asus->hotplug_workqueue =
572 create_singlethread_workqueue("hotplug_workqueue");
573 if (!asus->hotplug_workqueue)
574 goto error_workqueue;
575
576 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
577
578 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
579 if (!asus->hotplug_slot)
580 goto error_slot;
581
582 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
583 GFP_KERNEL);
584 if (!asus->hotplug_slot->info)
585 goto error_info;
586
587 asus->hotplug_slot->private = asus;
588 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
589 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
590 asus_get_adapter_status(asus->hotplug_slot,
591 &asus->hotplug_slot->info->adapter_status);
592
593 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
594 if (ret) {
595 pr_err("Unable to register hotplug slot - %d\n", ret);
596 goto error_register;
597 }
598
599 return 0;
600
601 error_register:
602 kfree(asus->hotplug_slot->info);
603 error_info:
604 kfree(asus->hotplug_slot);
605 asus->hotplug_slot = NULL;
606 error_slot:
607 destroy_workqueue(asus->hotplug_workqueue);
608 error_workqueue:
609 return ret;
610 }
611
612 /*
613 * Rfkill devices
614 */
615 static int asus_rfkill_set(void *data, bool blocked)
616 {
617 struct asus_rfkill *priv = data;
618 u32 ctrl_param = !blocked;
619
620 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
621 }
622
623 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
624 {
625 struct asus_rfkill *priv = data;
626 int result;
627
628 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
629
630 if (result < 0)
631 return;
632
633 rfkill_set_sw_state(priv->rfkill, !result);
634 }
635
636 static int asus_rfkill_wlan_set(void *data, bool blocked)
637 {
638 struct asus_rfkill *priv = data;
639 struct asus_wmi *asus = priv->asus;
640 int ret;
641
642 /*
643 * This handler is enabled only if hotplug is enabled.
644 * In this case, the asus_wmi_set_devstate() will
645 * trigger a wmi notification and we need to wait
646 * this call to finish before being able to call
647 * any wmi method
648 */
649 mutex_lock(&asus->wmi_lock);
650 ret = asus_rfkill_set(data, blocked);
651 mutex_unlock(&asus->wmi_lock);
652 return ret;
653 }
654
655 static const struct rfkill_ops asus_rfkill_wlan_ops = {
656 .set_block = asus_rfkill_wlan_set,
657 .query = asus_rfkill_query,
658 };
659
660 static const struct rfkill_ops asus_rfkill_ops = {
661 .set_block = asus_rfkill_set,
662 .query = asus_rfkill_query,
663 };
664
665 static int asus_new_rfkill(struct asus_wmi *asus,
666 struct asus_rfkill *arfkill,
667 const char *name, enum rfkill_type type, int dev_id)
668 {
669 int result = asus_wmi_get_devstate_simple(asus, dev_id);
670 struct rfkill **rfkill = &arfkill->rfkill;
671
672 if (result < 0)
673 return result;
674
675 arfkill->dev_id = dev_id;
676 arfkill->asus = asus;
677
678 if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless)
679 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
680 &asus_rfkill_wlan_ops, arfkill);
681 else
682 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
683 &asus_rfkill_ops, arfkill);
684
685 if (!*rfkill)
686 return -EINVAL;
687
688 rfkill_init_sw_state(*rfkill, !result);
689 result = rfkill_register(*rfkill);
690 if (result) {
691 rfkill_destroy(*rfkill);
692 *rfkill = NULL;
693 return result;
694 }
695 return 0;
696 }
697
698 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
699 {
700 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
701 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
702 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
703 if (asus->wlan.rfkill) {
704 rfkill_unregister(asus->wlan.rfkill);
705 rfkill_destroy(asus->wlan.rfkill);
706 asus->wlan.rfkill = NULL;
707 }
708 /*
709 * Refresh pci hotplug in case the rfkill state was changed after
710 * asus_unregister_rfkill_notifier()
711 */
712 asus_rfkill_hotplug(asus);
713 if (asus->hotplug_slot)
714 pci_hp_deregister(asus->hotplug_slot);
715 if (asus->hotplug_workqueue)
716 destroy_workqueue(asus->hotplug_workqueue);
717
718 if (asus->bluetooth.rfkill) {
719 rfkill_unregister(asus->bluetooth.rfkill);
720 rfkill_destroy(asus->bluetooth.rfkill);
721 asus->bluetooth.rfkill = NULL;
722 }
723 if (asus->wimax.rfkill) {
724 rfkill_unregister(asus->wimax.rfkill);
725 rfkill_destroy(asus->wimax.rfkill);
726 asus->wimax.rfkill = NULL;
727 }
728 if (asus->wwan3g.rfkill) {
729 rfkill_unregister(asus->wwan3g.rfkill);
730 rfkill_destroy(asus->wwan3g.rfkill);
731 asus->wwan3g.rfkill = NULL;
732 }
733 }
734
735 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
736 {
737 int result = 0;
738
739 mutex_init(&asus->hotplug_lock);
740 mutex_init(&asus->wmi_lock);
741
742 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
743 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
744
745 if (result && result != -ENODEV)
746 goto exit;
747
748 result = asus_new_rfkill(asus, &asus->bluetooth,
749 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
750 ASUS_WMI_DEVID_BLUETOOTH);
751
752 if (result && result != -ENODEV)
753 goto exit;
754
755 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
756 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
757
758 if (result && result != -ENODEV)
759 goto exit;
760
761 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
762 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
763
764 if (result && result != -ENODEV)
765 goto exit;
766
767 if (!asus->driver->hotplug_wireless)
768 goto exit;
769
770 result = asus_setup_pci_hotplug(asus);
771 /*
772 * If we get -EBUSY then something else is handling the PCI hotplug -
773 * don't fail in this case
774 */
775 if (result == -EBUSY)
776 result = 0;
777
778 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
779 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
780 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
781 /*
782 * Refresh pci hotplug in case the rfkill state was changed during
783 * setup.
784 */
785 asus_rfkill_hotplug(asus);
786
787 exit:
788 if (result && result != -ENODEV)
789 asus_wmi_rfkill_exit(asus);
790
791 if (result == -ENODEV)
792 result = 0;
793
794 return result;
795 }
796
797 /*
798 * Hwmon device
799 */
800 static ssize_t asus_hwmon_pwm1(struct device *dev,
801 struct device_attribute *attr,
802 char *buf)
803 {
804 struct asus_wmi *asus = dev_get_drvdata(dev);
805 u32 value;
806 int err;
807
808 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
809
810 if (err < 0)
811 return err;
812
813 value &= 0xFF;
814
815 if (value == 1) /* Low Speed */
816 value = 85;
817 else if (value == 2)
818 value = 170;
819 else if (value == 3)
820 value = 255;
821 else if (value != 0) {
822 pr_err("Unknown fan speed %#x", value);
823 value = -1;
824 }
825
826 return sprintf(buf, "%d\n", value);
827 }
828
829 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
830
831 static ssize_t
832 show_name(struct device *dev, struct device_attribute *attr, char *buf)
833 {
834 return sprintf(buf, "asus\n");
835 }
836 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
837
838 static struct attribute *hwmon_attributes[] = {
839 &sensor_dev_attr_pwm1.dev_attr.attr,
840 &sensor_dev_attr_name.dev_attr.attr,
841 NULL
842 };
843
844 static mode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
845 struct attribute *attr, int idx)
846 {
847 struct device *dev = container_of(kobj, struct device, kobj);
848 struct platform_device *pdev = to_platform_device(dev->parent);
849 struct asus_wmi *asus = platform_get_drvdata(pdev);
850 bool ok = true;
851 int dev_id = -1;
852 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
853
854 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
855 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
856
857 if (dev_id != -1) {
858 int err = asus_wmi_get_devstate(asus, dev_id, &value);
859
860 if (err < 0)
861 return 0; /* can't return negative here */
862 }
863
864 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
865 /*
866 * We need to find a better way, probably using sfun,
867 * bits or spec ...
868 * Currently we disable it if:
869 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
870 * - reverved bits are non-zero
871 * - sfun and presence bit are not set
872 */
873 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
874 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
875 ok = false;
876 }
877
878 return ok ? attr->mode : 0;
879 }
880
881 static struct attribute_group hwmon_attribute_group = {
882 .is_visible = asus_hwmon_sysfs_is_visible,
883 .attrs = hwmon_attributes
884 };
885
886 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
887 {
888 struct device *hwmon;
889
890 hwmon = asus->hwmon_device;
891 if (!hwmon)
892 return;
893 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
894 hwmon_device_unregister(hwmon);
895 asus->hwmon_device = NULL;
896 }
897
898 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
899 {
900 struct device *hwmon;
901 int result;
902
903 hwmon = hwmon_device_register(&asus->platform_device->dev);
904 if (IS_ERR(hwmon)) {
905 pr_err("Could not register asus hwmon device\n");
906 return PTR_ERR(hwmon);
907 }
908 dev_set_drvdata(hwmon, asus);
909 asus->hwmon_device = hwmon;
910 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
911 if (result)
912 asus_wmi_hwmon_exit(asus);
913 return result;
914 }
915
916 /*
917 * Backlight
918 */
919 static int read_backlight_power(struct asus_wmi *asus)
920 {
921 int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT);
922
923 if (ret < 0)
924 return ret;
925
926 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
927 }
928
929 static int read_brightness_max(struct asus_wmi *asus)
930 {
931 u32 retval;
932 int err;
933
934 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
935
936 if (err < 0)
937 return err;
938
939 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
940 retval >>= 8;
941
942 if (!retval)
943 return -ENODEV;
944
945 return retval;
946 }
947
948 static int read_brightness(struct backlight_device *bd)
949 {
950 struct asus_wmi *asus = bl_get_data(bd);
951 u32 retval;
952 int err;
953
954 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
955
956 if (err < 0)
957 return err;
958
959 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
960 }
961
962 static int update_bl_status(struct backlight_device *bd)
963 {
964 struct asus_wmi *asus = bl_get_data(bd);
965 u32 ctrl_param;
966 int power, err;
967
968 ctrl_param = bd->props.brightness;
969
970 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
971 ctrl_param, NULL);
972
973 if (err < 0)
974 return err;
975
976 power = read_backlight_power(asus);
977 if (power != -ENODEV && bd->props.power != power) {
978 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
979 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
980 ctrl_param, NULL);
981 }
982 return err;
983 }
984
985 static const struct backlight_ops asus_wmi_bl_ops = {
986 .get_brightness = read_brightness,
987 .update_status = update_bl_status,
988 };
989
990 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
991 {
992 struct backlight_device *bd = asus->backlight_device;
993 int old = bd->props.brightness;
994 int new = old;
995
996 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
997 new = code - NOTIFY_BRNUP_MIN + 1;
998 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
999 new = code - NOTIFY_BRNDOWN_MIN;
1000
1001 bd->props.brightness = new;
1002 backlight_update_status(bd);
1003 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1004
1005 return old;
1006 }
1007
1008 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1009 {
1010 struct backlight_device *bd;
1011 struct backlight_properties props;
1012 int max;
1013 int power;
1014
1015 max = read_brightness_max(asus);
1016
1017 if (max == -ENODEV)
1018 max = 0;
1019 else if (max < 0)
1020 return max;
1021
1022 power = read_backlight_power(asus);
1023
1024 if (power == -ENODEV)
1025 power = FB_BLANK_UNBLANK;
1026 else if (power < 0)
1027 return power;
1028
1029 memset(&props, 0, sizeof(struct backlight_properties));
1030 props.type = BACKLIGHT_PLATFORM;
1031 props.max_brightness = max;
1032 bd = backlight_device_register(asus->driver->name,
1033 &asus->platform_device->dev, asus,
1034 &asus_wmi_bl_ops, &props);
1035 if (IS_ERR(bd)) {
1036 pr_err("Could not register backlight device\n");
1037 return PTR_ERR(bd);
1038 }
1039
1040 asus->backlight_device = bd;
1041
1042 bd->props.brightness = read_brightness(bd);
1043 bd->props.power = power;
1044 backlight_update_status(bd);
1045
1046 return 0;
1047 }
1048
1049 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1050 {
1051 if (asus->backlight_device)
1052 backlight_device_unregister(asus->backlight_device);
1053
1054 asus->backlight_device = NULL;
1055 }
1056
1057 static void asus_wmi_notify(u32 value, void *context)
1058 {
1059 struct asus_wmi *asus = context;
1060 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1061 union acpi_object *obj;
1062 acpi_status status;
1063 int code;
1064 int orig_code;
1065 unsigned int key_value = 1;
1066 bool autorelease = 1;
1067
1068 status = wmi_get_event_data(value, &response);
1069 if (status != AE_OK) {
1070 pr_err("bad event status 0x%x\n", status);
1071 return;
1072 }
1073
1074 obj = (union acpi_object *)response.pointer;
1075
1076 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1077 goto exit;
1078
1079 code = obj->integer.value;
1080 orig_code = code;
1081
1082 if (asus->driver->key_filter) {
1083 asus->driver->key_filter(asus->driver, &code, &key_value,
1084 &autorelease);
1085 if (code == ASUS_WMI_KEY_IGNORE)
1086 goto exit;
1087 }
1088
1089 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1090 code = NOTIFY_BRNUP_MIN;
1091 else if (code >= NOTIFY_BRNDOWN_MIN &&
1092 code <= NOTIFY_BRNDOWN_MAX)
1093 code = NOTIFY_BRNDOWN_MIN;
1094
1095 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1096 if (!acpi_video_backlight_support())
1097 asus_wmi_backlight_notify(asus, orig_code);
1098 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1099 key_value, autorelease))
1100 pr_info("Unknown key %x pressed\n", code);
1101
1102 exit:
1103 kfree(obj);
1104 }
1105
1106 /*
1107 * Sys helpers
1108 */
1109 static int parse_arg(const char *buf, unsigned long count, int *val)
1110 {
1111 if (!count)
1112 return 0;
1113 if (sscanf(buf, "%i", val) != 1)
1114 return -EINVAL;
1115 return count;
1116 }
1117
1118 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1119 const char *buf, size_t count)
1120 {
1121 u32 retval;
1122 int rv, err, value;
1123
1124 value = asus_wmi_get_devstate_simple(asus, devid);
1125 if (value == -ENODEV) /* Check device presence */
1126 return value;
1127
1128 rv = parse_arg(buf, count, &value);
1129 err = asus_wmi_set_devstate(devid, value, &retval);
1130
1131 if (err < 0)
1132 return err;
1133
1134 return rv;
1135 }
1136
1137 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1138 {
1139 int value = asus_wmi_get_devstate_simple(asus, devid);
1140
1141 if (value < 0)
1142 return value;
1143
1144 return sprintf(buf, "%d\n", value);
1145 }
1146
1147 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1148 static ssize_t show_##_name(struct device *dev, \
1149 struct device_attribute *attr, \
1150 char *buf) \
1151 { \
1152 struct asus_wmi *asus = dev_get_drvdata(dev); \
1153 \
1154 return show_sys_wmi(asus, _cm, buf); \
1155 } \
1156 static ssize_t store_##_name(struct device *dev, \
1157 struct device_attribute *attr, \
1158 const char *buf, size_t count) \
1159 { \
1160 struct asus_wmi *asus = dev_get_drvdata(dev); \
1161 \
1162 return store_sys_wmi(asus, _cm, buf, count); \
1163 } \
1164 static struct device_attribute dev_attr_##_name = { \
1165 .attr = { \
1166 .name = __stringify(_name), \
1167 .mode = _mode }, \
1168 .show = show_##_name, \
1169 .store = store_##_name, \
1170 }
1171
1172 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1173 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1174 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1175
1176 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1177 const char *buf, size_t count)
1178 {
1179 int value;
1180
1181 if (!count || sscanf(buf, "%i", &value) != 1)
1182 return -EINVAL;
1183 if (value < 0 || value > 2)
1184 return -EINVAL;
1185
1186 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1187 }
1188
1189 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1190
1191 static struct attribute *platform_attributes[] = {
1192 &dev_attr_cpufv.attr,
1193 &dev_attr_camera.attr,
1194 &dev_attr_cardr.attr,
1195 &dev_attr_touchpad.attr,
1196 NULL
1197 };
1198
1199 static mode_t asus_sysfs_is_visible(struct kobject *kobj,
1200 struct attribute *attr, int idx)
1201 {
1202 struct device *dev = container_of(kobj, struct device, kobj);
1203 struct platform_device *pdev = to_platform_device(dev);
1204 struct asus_wmi *asus = platform_get_drvdata(pdev);
1205 bool ok = true;
1206 int devid = -1;
1207
1208 if (attr == &dev_attr_camera.attr)
1209 devid = ASUS_WMI_DEVID_CAMERA;
1210 else if (attr == &dev_attr_cardr.attr)
1211 devid = ASUS_WMI_DEVID_CARDREADER;
1212 else if (attr == &dev_attr_touchpad.attr)
1213 devid = ASUS_WMI_DEVID_TOUCHPAD;
1214
1215 if (devid != -1)
1216 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1217
1218 return ok ? attr->mode : 0;
1219 }
1220
1221 static struct attribute_group platform_attribute_group = {
1222 .is_visible = asus_sysfs_is_visible,
1223 .attrs = platform_attributes
1224 };
1225
1226 static void asus_wmi_sysfs_exit(struct platform_device *device)
1227 {
1228 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1229 }
1230
1231 static int asus_wmi_sysfs_init(struct platform_device *device)
1232 {
1233 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1234 }
1235
1236 /*
1237 * Platform device
1238 */
1239 static int asus_wmi_platform_init(struct asus_wmi *asus)
1240 {
1241 int rv;
1242
1243 /* INIT enable hotkeys on some models */
1244 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1245 pr_info("Initialization: %#x", rv);
1246
1247 /* We don't know yet what to do with this version... */
1248 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1249 pr_info("BIOS WMI version: %d.%d", rv >> 8, rv & 0xFF);
1250 asus->spec = rv;
1251 }
1252
1253 /*
1254 * The SFUN method probably allows the original driver to get the list
1255 * of features supported by a given model. For now, 0x0100 or 0x0800
1256 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1257 * The significance of others is yet to be found.
1258 */
1259 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1260 pr_info("SFUN value: %#x", rv);
1261 asus->sfun = rv;
1262 }
1263
1264 /*
1265 * Eee PC and Notebooks seems to have different method_id for DSTS,
1266 * but it may also be related to the BIOS's SPEC.
1267 * Note, on most Eeepc, there is no way to check if a method exist
1268 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1269 * but once again, SPEC may probably be used for that kind of things.
1270 */
1271 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1272 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1273 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1274 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1275
1276 if (!asus->dsts_id) {
1277 pr_err("Can't find DSTS");
1278 return -ENODEV;
1279 }
1280
1281 return asus_wmi_sysfs_init(asus->platform_device);
1282 }
1283
1284 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1285 {
1286 asus_wmi_sysfs_exit(asus->platform_device);
1287 }
1288
1289 /*
1290 * debugfs
1291 */
1292 struct asus_wmi_debugfs_node {
1293 struct asus_wmi *asus;
1294 char *name;
1295 int (*show) (struct seq_file *m, void *data);
1296 };
1297
1298 static int show_dsts(struct seq_file *m, void *data)
1299 {
1300 struct asus_wmi *asus = m->private;
1301 int err;
1302 u32 retval = -1;
1303
1304 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1305
1306 if (err < 0)
1307 return err;
1308
1309 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1310
1311 return 0;
1312 }
1313
1314 static int show_devs(struct seq_file *m, void *data)
1315 {
1316 struct asus_wmi *asus = m->private;
1317 int err;
1318 u32 retval = -1;
1319
1320 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1321 &retval);
1322
1323 if (err < 0)
1324 return err;
1325
1326 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1327 asus->debug.ctrl_param, retval);
1328
1329 return 0;
1330 }
1331
1332 static int show_call(struct seq_file *m, void *data)
1333 {
1334 struct asus_wmi *asus = m->private;
1335 struct bios_args args = {
1336 .arg0 = asus->debug.dev_id,
1337 .arg1 = asus->debug.ctrl_param,
1338 };
1339 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1340 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1341 union acpi_object *obj;
1342 acpi_status status;
1343
1344 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1345 1, asus->debug.method_id,
1346 &input, &output);
1347
1348 if (ACPI_FAILURE(status))
1349 return -EIO;
1350
1351 obj = (union acpi_object *)output.pointer;
1352 if (obj && obj->type == ACPI_TYPE_INTEGER)
1353 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1354 asus->debug.dev_id, asus->debug.ctrl_param,
1355 (u32) obj->integer.value);
1356 else
1357 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1358 asus->debug.dev_id, asus->debug.ctrl_param,
1359 obj ? obj->type : -1);
1360
1361 kfree(obj);
1362
1363 return 0;
1364 }
1365
1366 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1367 {NULL, "devs", show_devs},
1368 {NULL, "dsts", show_dsts},
1369 {NULL, "call", show_call},
1370 };
1371
1372 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1373 {
1374 struct asus_wmi_debugfs_node *node = inode->i_private;
1375
1376 return single_open(file, node->show, node->asus);
1377 }
1378
1379 static const struct file_operations asus_wmi_debugfs_io_ops = {
1380 .owner = THIS_MODULE,
1381 .open = asus_wmi_debugfs_open,
1382 .read = seq_read,
1383 .llseek = seq_lseek,
1384 .release = single_release,
1385 };
1386
1387 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1388 {
1389 debugfs_remove_recursive(asus->debug.root);
1390 }
1391
1392 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1393 {
1394 struct dentry *dent;
1395 int i;
1396
1397 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1398 if (!asus->debug.root) {
1399 pr_err("failed to create debugfs directory");
1400 goto error_debugfs;
1401 }
1402
1403 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1404 asus->debug.root, &asus->debug.method_id);
1405 if (!dent)
1406 goto error_debugfs;
1407
1408 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1409 asus->debug.root, &asus->debug.dev_id);
1410 if (!dent)
1411 goto error_debugfs;
1412
1413 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1414 asus->debug.root, &asus->debug.ctrl_param);
1415 if (!dent)
1416 goto error_debugfs;
1417
1418 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1419 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1420
1421 node->asus = asus;
1422 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1423 asus->debug.root, node,
1424 &asus_wmi_debugfs_io_ops);
1425 if (!dent) {
1426 pr_err("failed to create debug file: %s\n", node->name);
1427 goto error_debugfs;
1428 }
1429 }
1430
1431 return 0;
1432
1433 error_debugfs:
1434 asus_wmi_debugfs_exit(asus);
1435 return -ENOMEM;
1436 }
1437
1438 /*
1439 * WMI Driver
1440 */
1441 static int asus_wmi_add(struct platform_device *pdev)
1442 {
1443 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1444 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1445 struct asus_wmi *asus;
1446 acpi_status status;
1447 int err;
1448
1449 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1450 if (!asus)
1451 return -ENOMEM;
1452
1453 asus->driver = wdrv;
1454 asus->platform_device = pdev;
1455 wdrv->platform_device = pdev;
1456 platform_set_drvdata(asus->platform_device, asus);
1457
1458 if (wdrv->quirks)
1459 wdrv->quirks(asus->driver);
1460
1461 err = asus_wmi_platform_init(asus);
1462 if (err)
1463 goto fail_platform;
1464
1465 err = asus_wmi_input_init(asus);
1466 if (err)
1467 goto fail_input;
1468
1469 err = asus_wmi_hwmon_init(asus);
1470 if (err)
1471 goto fail_hwmon;
1472
1473 err = asus_wmi_led_init(asus);
1474 if (err)
1475 goto fail_leds;
1476
1477 err = asus_wmi_rfkill_init(asus);
1478 if (err)
1479 goto fail_rfkill;
1480
1481 if (!acpi_video_backlight_support()) {
1482 err = asus_wmi_backlight_init(asus);
1483 if (err && err != -ENODEV)
1484 goto fail_backlight;
1485 } else
1486 pr_info("Backlight controlled by ACPI video driver\n");
1487
1488 status = wmi_install_notify_handler(asus->driver->event_guid,
1489 asus_wmi_notify, asus);
1490 if (ACPI_FAILURE(status)) {
1491 pr_err("Unable to register notify handler - %d\n", status);
1492 err = -ENODEV;
1493 goto fail_wmi_handler;
1494 }
1495
1496 err = asus_wmi_debugfs_init(asus);
1497 if (err)
1498 goto fail_debugfs;
1499
1500 return 0;
1501
1502 fail_debugfs:
1503 wmi_remove_notify_handler(asus->driver->event_guid);
1504 fail_wmi_handler:
1505 asus_wmi_backlight_exit(asus);
1506 fail_backlight:
1507 asus_wmi_rfkill_exit(asus);
1508 fail_rfkill:
1509 asus_wmi_led_exit(asus);
1510 fail_leds:
1511 asus_wmi_hwmon_exit(asus);
1512 fail_hwmon:
1513 asus_wmi_input_exit(asus);
1514 fail_input:
1515 asus_wmi_platform_exit(asus);
1516 fail_platform:
1517 kfree(asus);
1518 return err;
1519 }
1520
1521 static int asus_wmi_remove(struct platform_device *device)
1522 {
1523 struct asus_wmi *asus;
1524
1525 asus = platform_get_drvdata(device);
1526 wmi_remove_notify_handler(asus->driver->event_guid);
1527 asus_wmi_backlight_exit(asus);
1528 asus_wmi_input_exit(asus);
1529 asus_wmi_hwmon_exit(asus);
1530 asus_wmi_led_exit(asus);
1531 asus_wmi_rfkill_exit(asus);
1532 asus_wmi_debugfs_exit(asus);
1533 asus_wmi_platform_exit(asus);
1534
1535 kfree(asus);
1536 return 0;
1537 }
1538
1539 /*
1540 * Platform driver - hibernate/resume callbacks
1541 */
1542 static int asus_hotk_thaw(struct device *device)
1543 {
1544 struct asus_wmi *asus = dev_get_drvdata(device);
1545
1546 if (asus->wlan.rfkill) {
1547 bool wlan;
1548
1549 /*
1550 * Work around bios bug - acpi _PTS turns off the wireless led
1551 * during suspend. Normally it restores it on resume, but
1552 * we should kick it ourselves in case hibernation is aborted.
1553 */
1554 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1555 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1556 }
1557
1558 return 0;
1559 }
1560
1561 static int asus_hotk_restore(struct device *device)
1562 {
1563 struct asus_wmi *asus = dev_get_drvdata(device);
1564 int bl;
1565
1566 /* Refresh both wlan rfkill state and pci hotplug */
1567 if (asus->wlan.rfkill)
1568 asus_rfkill_hotplug(asus);
1569
1570 if (asus->bluetooth.rfkill) {
1571 bl = !asus_wmi_get_devstate_simple(asus,
1572 ASUS_WMI_DEVID_BLUETOOTH);
1573 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1574 }
1575 if (asus->wimax.rfkill) {
1576 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1577 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1578 }
1579 if (asus->wwan3g.rfkill) {
1580 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1581 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1582 }
1583
1584 return 0;
1585 }
1586
1587 static const struct dev_pm_ops asus_pm_ops = {
1588 .thaw = asus_hotk_thaw,
1589 .restore = asus_hotk_restore,
1590 };
1591
1592 static int asus_wmi_probe(struct platform_device *pdev)
1593 {
1594 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1595 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1596 int ret;
1597
1598 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1599 pr_warn("Management GUID not found\n");
1600 return -ENODEV;
1601 }
1602
1603 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1604 pr_warn("Event GUID not found\n");
1605 return -ENODEV;
1606 }
1607
1608 if (wdrv->probe) {
1609 ret = wdrv->probe(pdev);
1610 if (ret)
1611 return ret;
1612 }
1613
1614 return asus_wmi_add(pdev);
1615 }
1616
1617 static bool used;
1618
1619 int asus_wmi_register_driver(struct asus_wmi_driver *driver)
1620 {
1621 struct platform_driver *platform_driver;
1622 struct platform_device *platform_device;
1623
1624 if (used)
1625 return -EBUSY;
1626
1627 platform_driver = &driver->platform_driver;
1628 platform_driver->remove = asus_wmi_remove;
1629 platform_driver->driver.owner = driver->owner;
1630 platform_driver->driver.name = driver->name;
1631 platform_driver->driver.pm = &asus_pm_ops;
1632
1633 platform_device = platform_create_bundle(platform_driver,
1634 asus_wmi_probe,
1635 NULL, 0, NULL, 0);
1636 if (IS_ERR(platform_device))
1637 return PTR_ERR(platform_device);
1638
1639 used = true;
1640 return 0;
1641 }
1642 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1643
1644 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1645 {
1646 platform_device_unregister(driver->platform_device);
1647 platform_driver_unregister(&driver->platform_driver);
1648 used = false;
1649 }
1650 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1651
1652 static int __init asus_wmi_init(void)
1653 {
1654 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1655 pr_info("Asus Management GUID not found");
1656 return -ENODEV;
1657 }
1658
1659 pr_info("ASUS WMI generic driver loaded");
1660 return 0;
1661 }
1662
1663 static void __exit asus_wmi_exit(void)
1664 {
1665 pr_info("ASUS WMI generic driver unloaded");
1666 }
1667
1668 module_init(asus_wmi_init);
1669 module_exit(asus_wmi_exit);
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