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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 <linux/thermal.h>
48#include <acpi/acpi_bus.h>
49#include <acpi/acpi_drivers.h>
50
51#include "asus-wmi.h"
52
53MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
54 "Yong Wang <yong.y.wang@intel.com>");
55MODULE_DESCRIPTION("Asus Generic WMI Driver");
56MODULE_LICENSE("GPL");
57
58#define to_platform_driver(drv) \
59 (container_of((drv), struct platform_driver, driver))
60
61#define to_asus_wmi_driver(pdrv) \
62 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
63
64#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
65
66#define NOTIFY_BRNUP_MIN 0x11
67#define NOTIFY_BRNUP_MAX 0x1f
68#define NOTIFY_BRNDOWN_MIN 0x20
69#define NOTIFY_BRNDOWN_MAX 0x2e
70#define NOTIFY_KBD_BRTUP 0xc4
71#define NOTIFY_KBD_BRTDWN 0xc5
72
73/* WMI Methods */
74#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
75#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
76#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
77#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
78#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
79#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
80#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
81#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
82#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
83#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
84#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
85#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
86#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
87#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
88#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
89#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
90#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
91#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
92#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
93
94#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
95
96/* Wireless */
97#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
98#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
99#define ASUS_WMI_DEVID_CWAP 0x00010003
100#define ASUS_WMI_DEVID_WLAN 0x00010011
101#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
102#define ASUS_WMI_DEVID_GPS 0x00010015
103#define ASUS_WMI_DEVID_WIMAX 0x00010017
104#define ASUS_WMI_DEVID_WWAN3G 0x00010019
105#define ASUS_WMI_DEVID_UWB 0x00010021
106
107/* Leds */
108/* 0x000200XX and 0x000400XX */
109#define ASUS_WMI_DEVID_LED1 0x00020011
110#define ASUS_WMI_DEVID_LED2 0x00020012
111#define ASUS_WMI_DEVID_LED3 0x00020013
112#define ASUS_WMI_DEVID_LED4 0x00020014
113#define ASUS_WMI_DEVID_LED5 0x00020015
114#define ASUS_WMI_DEVID_LED6 0x00020016
115
116/* Backlight and Brightness */
117#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
118#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
119#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
120#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
121
122/* Misc */
123#define ASUS_WMI_DEVID_CAMERA 0x00060013
124
125/* Storage */
126#define ASUS_WMI_DEVID_CARDREADER 0x00080013
127
128/* Input */
129#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
130#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
131
132/* Fan, Thermal */
133#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
134#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
135
136/* Power */
137#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
138
139/* DSTS masks */
140#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
141#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
142#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
143#define ASUS_WMI_DSTS_USER_BIT 0x00020000
144#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
145#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
146#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
147
148struct bios_args {
149 u32 arg0;
150 u32 arg1;
151} __packed;
152
153/*
154 * <platform>/ - debugfs root directory
155 * dev_id - current dev_id
156 * ctrl_param - current ctrl_param
157 * method_id - current method_id
158 * devs - call DEVS(dev_id, ctrl_param) and print result
159 * dsts - call DSTS(dev_id) and print result
160 * call - call method_id(dev_id, ctrl_param) and print result
161 */
162struct asus_wmi_debug {
163 struct dentry *root;
164 u32 method_id;
165 u32 dev_id;
166 u32 ctrl_param;
167};
168
169struct asus_rfkill {
170 struct asus_wmi *asus;
171 struct rfkill *rfkill;
172 u32 dev_id;
173};
174
175struct asus_wmi {
176 int dsts_id;
177 int spec;
178 int sfun;
179
180 struct input_dev *inputdev;
181 struct backlight_device *backlight_device;
182 struct device *hwmon_device;
183 struct platform_device *platform_device;
184
185 struct led_classdev tpd_led;
186 int tpd_led_wk;
187 struct led_classdev kbd_led;
188 int kbd_led_wk;
189 struct workqueue_struct *led_workqueue;
190 struct work_struct tpd_led_work;
191 struct work_struct kbd_led_work;
192
193 struct asus_rfkill wlan;
194 struct asus_rfkill bluetooth;
195 struct asus_rfkill wimax;
196 struct asus_rfkill wwan3g;
197 struct asus_rfkill gps;
198 struct asus_rfkill uwb;
199
200 struct hotplug_slot *hotplug_slot;
201 struct mutex hotplug_lock;
202 struct mutex wmi_lock;
203 struct workqueue_struct *hotplug_workqueue;
204 struct work_struct hotplug_work;
205
206 struct asus_wmi_debug debug;
207
208 struct asus_wmi_driver *driver;
209};
210
211static int asus_wmi_input_init(struct asus_wmi *asus)
212{
213 int err;
214
215 asus->inputdev = input_allocate_device();
216 if (!asus->inputdev)
217 return -ENOMEM;
218
219 asus->inputdev->name = asus->driver->input_name;
220 asus->inputdev->phys = asus->driver->input_phys;
221 asus->inputdev->id.bustype = BUS_HOST;
222 asus->inputdev->dev.parent = &asus->platform_device->dev;
223 set_bit(EV_REP, asus->inputdev->evbit);
224
225 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
226 if (err)
227 goto err_free_dev;
228
229 err = input_register_device(asus->inputdev);
230 if (err)
231 goto err_free_keymap;
232
233 return 0;
234
235err_free_keymap:
236 sparse_keymap_free(asus->inputdev);
237err_free_dev:
238 input_free_device(asus->inputdev);
239 return err;
240}
241
242static void asus_wmi_input_exit(struct asus_wmi *asus)
243{
244 if (asus->inputdev) {
245 sparse_keymap_free(asus->inputdev);
246 input_unregister_device(asus->inputdev);
247 }
248
249 asus->inputdev = NULL;
250}
251
252static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
253 u32 *retval)
254{
255 struct bios_args args = {
256 .arg0 = arg0,
257 .arg1 = arg1,
258 };
259 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
260 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
261 acpi_status status;
262 union acpi_object *obj;
263 u32 tmp;
264
265 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
266 &input, &output);
267
268 if (ACPI_FAILURE(status))
269 goto exit;
270
271 obj = (union acpi_object *)output.pointer;
272 if (obj && obj->type == ACPI_TYPE_INTEGER)
273 tmp = (u32) obj->integer.value;
274 else
275 tmp = 0;
276
277 if (retval)
278 *retval = tmp;
279
280 kfree(obj);
281
282exit:
283 if (ACPI_FAILURE(status))
284 return -EIO;
285
286 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
287 return -ENODEV;
288
289 return 0;
290}
291
292static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
293{
294 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
295}
296
297static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
298 u32 *retval)
299{
300 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
301 ctrl_param, retval);
302}
303
304/* Helper for special devices with magic return codes */
305static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
306 u32 dev_id, u32 mask)
307{
308 u32 retval = 0;
309 int err;
310
311 err = asus_wmi_get_devstate(asus, dev_id, &retval);
312
313 if (err < 0)
314 return err;
315
316 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
317 return -ENODEV;
318
319 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
320 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
321 return -ENODEV;
322 }
323
324 return retval & mask;
325}
326
327static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
328{
329 return asus_wmi_get_devstate_bits(asus, dev_id,
330 ASUS_WMI_DSTS_STATUS_BIT);
331}
332
333/*
334 * LEDs
335 */
336/*
337 * These functions actually update the LED's, and are called from a
338 * workqueue. By doing this as separate work rather than when the LED
339 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
340 * potentially bad time, such as a timer interrupt.
341 */
342static void tpd_led_update(struct work_struct *work)
343{
344 int ctrl_param;
345 struct asus_wmi *asus;
346
347 asus = container_of(work, struct asus_wmi, tpd_led_work);
348
349 ctrl_param = asus->tpd_led_wk;
350 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
351}
352
353static void tpd_led_set(struct led_classdev *led_cdev,
354 enum led_brightness value)
355{
356 struct asus_wmi *asus;
357
358 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
359
360 asus->tpd_led_wk = !!value;
361 queue_work(asus->led_workqueue, &asus->tpd_led_work);
362}
363
364static int read_tpd_led_state(struct asus_wmi *asus)
365{
366 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
367}
368
369static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
370{
371 struct asus_wmi *asus;
372
373 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
374
375 return read_tpd_led_state(asus);
376}
377
378static void kbd_led_update(struct work_struct *work)
379{
380 int ctrl_param = 0;
381 struct asus_wmi *asus;
382
383 asus = container_of(work, struct asus_wmi, kbd_led_work);
384
385 /*
386 * bits 0-2: level
387 * bit 7: light on/off
388 */
389 if (asus->kbd_led_wk > 0)
390 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
391
392 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
393}
394
395static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
396{
397 int retval;
398
399 /*
400 * bits 0-2: level
401 * bit 7: light on/off
402 * bit 8-10: environment (0: dark, 1: normal, 2: light)
403 * bit 17: status unknown
404 */
405 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
406 0xFFFF);
407
408 /* Unknown status is considered as off */
409 if (retval == 0x8000)
410 retval = 0;
411
412 if (retval >= 0) {
413 if (level)
414 *level = retval & 0x7F;
415 if (env)
416 *env = (retval >> 8) & 0x7F;
417 retval = 0;
418 }
419
420 return retval;
421}
422
423static void kbd_led_set(struct led_classdev *led_cdev,
424 enum led_brightness value)
425{
426 struct asus_wmi *asus;
427
428 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
429
430 if (value > asus->kbd_led.max_brightness)
431 value = asus->kbd_led.max_brightness;
432 else if (value < 0)
433 value = 0;
434
435 asus->kbd_led_wk = value;
436 queue_work(asus->led_workqueue, &asus->kbd_led_work);
437}
438
439static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
440{
441 struct asus_wmi *asus;
442 int retval, value;
443
444 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
445
446 retval = kbd_led_read(asus, &value, NULL);
447
448 if (retval < 0)
449 return retval;
450
451 return value;
452}
453
454static void asus_wmi_led_exit(struct asus_wmi *asus)
455{
456 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
457 led_classdev_unregister(&asus->kbd_led);
458 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
459 led_classdev_unregister(&asus->tpd_led);
460 if (asus->led_workqueue)
461 destroy_workqueue(asus->led_workqueue);
462}
463
464static int asus_wmi_led_init(struct asus_wmi *asus)
465{
466 int rv = 0;
467
468 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
469 if (!asus->led_workqueue)
470 return -ENOMEM;
471
472 if (read_tpd_led_state(asus) >= 0) {
473 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
474
475 asus->tpd_led.name = "asus::touchpad";
476 asus->tpd_led.brightness_set = tpd_led_set;
477 asus->tpd_led.brightness_get = tpd_led_get;
478 asus->tpd_led.max_brightness = 1;
479
480 rv = led_classdev_register(&asus->platform_device->dev,
481 &asus->tpd_led);
482 if (rv)
483 goto error;
484 }
485
486 if (kbd_led_read(asus, NULL, NULL) >= 0) {
487 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
488
489 asus->kbd_led.name = "asus::kbd_backlight";
490 asus->kbd_led.brightness_set = kbd_led_set;
491 asus->kbd_led.brightness_get = kbd_led_get;
492 asus->kbd_led.max_brightness = 3;
493
494 rv = led_classdev_register(&asus->platform_device->dev,
495 &asus->kbd_led);
496 }
497
498error:
499 if (rv)
500 asus_wmi_led_exit(asus);
501
502 return rv;
503}
504
505
506/*
507 * PCI hotplug (for wlan rfkill)
508 */
509static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
510{
511 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
512
513 if (result < 0)
514 return false;
515 return !result;
516}
517
518static void asus_rfkill_hotplug(struct asus_wmi *asus)
519{
520 struct pci_dev *dev;
521 struct pci_bus *bus;
522 bool blocked;
523 bool absent;
524 u32 l;
525
526 mutex_lock(&asus->wmi_lock);
527 blocked = asus_wlan_rfkill_blocked(asus);
528 mutex_unlock(&asus->wmi_lock);
529
530 mutex_lock(&asus->hotplug_lock);
531
532 if (asus->wlan.rfkill)
533 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
534
535 if (asus->hotplug_slot) {
536 bus = pci_find_bus(0, 1);
537 if (!bus) {
538 pr_warn("Unable to find PCI bus 1?\n");
539 goto out_unlock;
540 }
541
542 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
543 pr_err("Unable to read PCI config space?\n");
544 goto out_unlock;
545 }
546 absent = (l == 0xffffffff);
547
548 if (blocked != absent) {
549 pr_warn("BIOS says wireless lan is %s, "
550 "but the pci device is %s\n",
551 blocked ? "blocked" : "unblocked",
552 absent ? "absent" : "present");
553 pr_warn("skipped wireless hotplug as probably "
554 "inappropriate for this model\n");
555 goto out_unlock;
556 }
557
558 if (!blocked) {
559 dev = pci_get_slot(bus, 0);
560 if (dev) {
561 /* Device already present */
562 pci_dev_put(dev);
563 goto out_unlock;
564 }
565 dev = pci_scan_single_device(bus, 0);
566 if (dev) {
567 pci_bus_assign_resources(bus);
568 if (pci_bus_add_device(dev))
569 pr_err("Unable to hotplug wifi\n");
570 }
571 } else {
572 dev = pci_get_slot(bus, 0);
573 if (dev) {
574 pci_stop_and_remove_bus_device(dev);
575 pci_dev_put(dev);
576 }
577 }
578 }
579
580out_unlock:
581 mutex_unlock(&asus->hotplug_lock);
582}
583
584static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
585{
586 struct asus_wmi *asus = data;
587
588 if (event != ACPI_NOTIFY_BUS_CHECK)
589 return;
590
591 /*
592 * We can't call directly asus_rfkill_hotplug because most
593 * of the time WMBC is still being executed and not reetrant.
594 * There is currently no way to tell ACPICA that we want this
595 * method to be serialized, we schedule a asus_rfkill_hotplug
596 * call later, in a safer context.
597 */
598 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
599}
600
601static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
602{
603 acpi_status status;
604 acpi_handle handle;
605
606 status = acpi_get_handle(NULL, node, &handle);
607
608 if (ACPI_SUCCESS(status)) {
609 status = acpi_install_notify_handler(handle,
610 ACPI_SYSTEM_NOTIFY,
611 asus_rfkill_notify, asus);
612 if (ACPI_FAILURE(status))
613 pr_warn("Failed to register notify on %s\n", node);
614 } else
615 return -ENODEV;
616
617 return 0;
618}
619
620static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
621{
622 acpi_status status = AE_OK;
623 acpi_handle handle;
624
625 status = acpi_get_handle(NULL, node, &handle);
626
627 if (ACPI_SUCCESS(status)) {
628 status = acpi_remove_notify_handler(handle,
629 ACPI_SYSTEM_NOTIFY,
630 asus_rfkill_notify);
631 if (ACPI_FAILURE(status))
632 pr_err("Error removing rfkill notify handler %s\n",
633 node);
634 }
635}
636
637static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
638 u8 *value)
639{
640 struct asus_wmi *asus = hotplug_slot->private;
641 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
642
643 if (result < 0)
644 return result;
645
646 *value = !!result;
647 return 0;
648}
649
650static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
651{
652 kfree(hotplug_slot->info);
653 kfree(hotplug_slot);
654}
655
656static struct hotplug_slot_ops asus_hotplug_slot_ops = {
657 .owner = THIS_MODULE,
658 .get_adapter_status = asus_get_adapter_status,
659 .get_power_status = asus_get_adapter_status,
660};
661
662static void asus_hotplug_work(struct work_struct *work)
663{
664 struct asus_wmi *asus;
665
666 asus = container_of(work, struct asus_wmi, hotplug_work);
667 asus_rfkill_hotplug(asus);
668}
669
670static int asus_setup_pci_hotplug(struct asus_wmi *asus)
671{
672 int ret = -ENOMEM;
673 struct pci_bus *bus = pci_find_bus(0, 1);
674
675 if (!bus) {
676 pr_err("Unable to find wifi PCI bus\n");
677 return -ENODEV;
678 }
679
680 asus->hotplug_workqueue =
681 create_singlethread_workqueue("hotplug_workqueue");
682 if (!asus->hotplug_workqueue)
683 goto error_workqueue;
684
685 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
686
687 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
688 if (!asus->hotplug_slot)
689 goto error_slot;
690
691 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
692 GFP_KERNEL);
693 if (!asus->hotplug_slot->info)
694 goto error_info;
695
696 asus->hotplug_slot->private = asus;
697 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
698 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
699 asus_get_adapter_status(asus->hotplug_slot,
700 &asus->hotplug_slot->info->adapter_status);
701
702 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
703 if (ret) {
704 pr_err("Unable to register hotplug slot - %d\n", ret);
705 goto error_register;
706 }
707
708 return 0;
709
710error_register:
711 kfree(asus->hotplug_slot->info);
712error_info:
713 kfree(asus->hotplug_slot);
714 asus->hotplug_slot = NULL;
715error_slot:
716 destroy_workqueue(asus->hotplug_workqueue);
717error_workqueue:
718 return ret;
719}
720
721/*
722 * Rfkill devices
723 */
724static int asus_rfkill_set(void *data, bool blocked)
725{
726 struct asus_rfkill *priv = data;
727 u32 ctrl_param = !blocked;
728
729 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
730}
731
732static void asus_rfkill_query(struct rfkill *rfkill, void *data)
733{
734 struct asus_rfkill *priv = data;
735 int result;
736
737 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
738
739 if (result < 0)
740 return;
741
742 rfkill_set_sw_state(priv->rfkill, !result);
743}
744
745static int asus_rfkill_wlan_set(void *data, bool blocked)
746{
747 struct asus_rfkill *priv = data;
748 struct asus_wmi *asus = priv->asus;
749 int ret;
750
751 /*
752 * This handler is enabled only if hotplug is enabled.
753 * In this case, the asus_wmi_set_devstate() will
754 * trigger a wmi notification and we need to wait
755 * this call to finish before being able to call
756 * any wmi method
757 */
758 mutex_lock(&asus->wmi_lock);
759 ret = asus_rfkill_set(data, blocked);
760 mutex_unlock(&asus->wmi_lock);
761 return ret;
762}
763
764static const struct rfkill_ops asus_rfkill_wlan_ops = {
765 .set_block = asus_rfkill_wlan_set,
766 .query = asus_rfkill_query,
767};
768
769static const struct rfkill_ops asus_rfkill_ops = {
770 .set_block = asus_rfkill_set,
771 .query = asus_rfkill_query,
772};
773
774static int asus_new_rfkill(struct asus_wmi *asus,
775 struct asus_rfkill *arfkill,
776 const char *name, enum rfkill_type type, int dev_id)
777{
778 int result = asus_wmi_get_devstate_simple(asus, dev_id);
779 struct rfkill **rfkill = &arfkill->rfkill;
780
781 if (result < 0)
782 return result;
783
784 arfkill->dev_id = dev_id;
785 arfkill->asus = asus;
786
787 if (dev_id == ASUS_WMI_DEVID_WLAN &&
788 asus->driver->quirks->hotplug_wireless)
789 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
790 &asus_rfkill_wlan_ops, arfkill);
791 else
792 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
793 &asus_rfkill_ops, arfkill);
794
795 if (!*rfkill)
796 return -EINVAL;
797
798 rfkill_init_sw_state(*rfkill, !result);
799 result = rfkill_register(*rfkill);
800 if (result) {
801 rfkill_destroy(*rfkill);
802 *rfkill = NULL;
803 return result;
804 }
805 return 0;
806}
807
808static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
809{
810 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
811 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
812 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
813 if (asus->wlan.rfkill) {
814 rfkill_unregister(asus->wlan.rfkill);
815 rfkill_destroy(asus->wlan.rfkill);
816 asus->wlan.rfkill = NULL;
817 }
818 /*
819 * Refresh pci hotplug in case the rfkill state was changed after
820 * asus_unregister_rfkill_notifier()
821 */
822 asus_rfkill_hotplug(asus);
823 if (asus->hotplug_slot)
824 pci_hp_deregister(asus->hotplug_slot);
825 if (asus->hotplug_workqueue)
826 destroy_workqueue(asus->hotplug_workqueue);
827
828 if (asus->bluetooth.rfkill) {
829 rfkill_unregister(asus->bluetooth.rfkill);
830 rfkill_destroy(asus->bluetooth.rfkill);
831 asus->bluetooth.rfkill = NULL;
832 }
833 if (asus->wimax.rfkill) {
834 rfkill_unregister(asus->wimax.rfkill);
835 rfkill_destroy(asus->wimax.rfkill);
836 asus->wimax.rfkill = NULL;
837 }
838 if (asus->wwan3g.rfkill) {
839 rfkill_unregister(asus->wwan3g.rfkill);
840 rfkill_destroy(asus->wwan3g.rfkill);
841 asus->wwan3g.rfkill = NULL;
842 }
843 if (asus->gps.rfkill) {
844 rfkill_unregister(asus->gps.rfkill);
845 rfkill_destroy(asus->gps.rfkill);
846 asus->gps.rfkill = NULL;
847 }
848 if (asus->uwb.rfkill) {
849 rfkill_unregister(asus->uwb.rfkill);
850 rfkill_destroy(asus->uwb.rfkill);
851 asus->uwb.rfkill = NULL;
852 }
853}
854
855static int asus_wmi_rfkill_init(struct asus_wmi *asus)
856{
857 int result = 0;
858
859 mutex_init(&asus->hotplug_lock);
860 mutex_init(&asus->wmi_lock);
861
862 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
863 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
864
865 if (result && result != -ENODEV)
866 goto exit;
867
868 result = asus_new_rfkill(asus, &asus->bluetooth,
869 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
870 ASUS_WMI_DEVID_BLUETOOTH);
871
872 if (result && result != -ENODEV)
873 goto exit;
874
875 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
876 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
877
878 if (result && result != -ENODEV)
879 goto exit;
880
881 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
882 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
883
884 if (result && result != -ENODEV)
885 goto exit;
886
887 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
888 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
889
890 if (result && result != -ENODEV)
891 goto exit;
892
893 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
894 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
895
896 if (result && result != -ENODEV)
897 goto exit;
898
899 if (!asus->driver->quirks->hotplug_wireless)
900 goto exit;
901
902 result = asus_setup_pci_hotplug(asus);
903 /*
904 * If we get -EBUSY then something else is handling the PCI hotplug -
905 * don't fail in this case
906 */
907 if (result == -EBUSY)
908 result = 0;
909
910 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
911 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
912 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
913 /*
914 * Refresh pci hotplug in case the rfkill state was changed during
915 * setup.
916 */
917 asus_rfkill_hotplug(asus);
918
919exit:
920 if (result && result != -ENODEV)
921 asus_wmi_rfkill_exit(asus);
922
923 if (result == -ENODEV)
924 result = 0;
925
926 return result;
927}
928
929/*
930 * Hwmon device
931 */
932static ssize_t asus_hwmon_pwm1(struct device *dev,
933 struct device_attribute *attr,
934 char *buf)
935{
936 struct asus_wmi *asus = dev_get_drvdata(dev);
937 u32 value;
938 int err;
939
940 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
941
942 if (err < 0)
943 return err;
944
945 value &= 0xFF;
946
947 if (value == 1) /* Low Speed */
948 value = 85;
949 else if (value == 2)
950 value = 170;
951 else if (value == 3)
952 value = 255;
953 else if (value != 0) {
954 pr_err("Unknown fan speed %#x", value);
955 value = -1;
956 }
957
958 return sprintf(buf, "%d\n", value);
959}
960
961static ssize_t asus_hwmon_temp1(struct device *dev,
962 struct device_attribute *attr,
963 char *buf)
964{
965 struct asus_wmi *asus = dev_get_drvdata(dev);
966 u32 value;
967 int err;
968
969 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
970
971 if (err < 0)
972 return err;
973
974 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
975
976 return sprintf(buf, "%d\n", value);
977}
978
979static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
980static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
981
982static ssize_t
983show_name(struct device *dev, struct device_attribute *attr, char *buf)
984{
985 return sprintf(buf, "asus\n");
986}
987static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
988
989static struct attribute *hwmon_attributes[] = {
990 &sensor_dev_attr_pwm1.dev_attr.attr,
991 &sensor_dev_attr_temp1_input.dev_attr.attr,
992 &sensor_dev_attr_name.dev_attr.attr,
993 NULL
994};
995
996static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
997 struct attribute *attr, int idx)
998{
999 struct device *dev = container_of(kobj, struct device, kobj);
1000 struct platform_device *pdev = to_platform_device(dev->parent);
1001 struct asus_wmi *asus = platform_get_drvdata(pdev);
1002 bool ok = true;
1003 int dev_id = -1;
1004 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1005
1006 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1007 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1008 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1009 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1010
1011 if (dev_id != -1) {
1012 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1013
1014 if (err < 0)
1015 return 0; /* can't return negative here */
1016 }
1017
1018 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1019 /*
1020 * We need to find a better way, probably using sfun,
1021 * bits or spec ...
1022 * Currently we disable it if:
1023 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1024 * - reverved bits are non-zero
1025 * - sfun and presence bit are not set
1026 */
1027 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1028 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1029 ok = false;
1030 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1031 /* If value is zero, something is clearly wrong */
1032 if (value == 0)
1033 ok = false;
1034 }
1035
1036 return ok ? attr->mode : 0;
1037}
1038
1039static struct attribute_group hwmon_attribute_group = {
1040 .is_visible = asus_hwmon_sysfs_is_visible,
1041 .attrs = hwmon_attributes
1042};
1043
1044static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1045{
1046 struct device *hwmon;
1047
1048 hwmon = asus->hwmon_device;
1049 if (!hwmon)
1050 return;
1051 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1052 hwmon_device_unregister(hwmon);
1053 asus->hwmon_device = NULL;
1054}
1055
1056static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1057{
1058 struct device *hwmon;
1059 int result;
1060
1061 hwmon = hwmon_device_register(&asus->platform_device->dev);
1062 if (IS_ERR(hwmon)) {
1063 pr_err("Could not register asus hwmon device\n");
1064 return PTR_ERR(hwmon);
1065 }
1066 dev_set_drvdata(hwmon, asus);
1067 asus->hwmon_device = hwmon;
1068 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1069 if (result)
1070 asus_wmi_hwmon_exit(asus);
1071 return result;
1072}
1073
1074/*
1075 * Backlight
1076 */
1077static int read_backlight_power(struct asus_wmi *asus)
1078{
1079 int ret;
1080 if (asus->driver->quirks->store_backlight_power)
1081 ret = !asus->driver->panel_power;
1082 else
1083 ret = asus_wmi_get_devstate_simple(asus,
1084 ASUS_WMI_DEVID_BACKLIGHT);
1085
1086 if (ret < 0)
1087 return ret;
1088
1089 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1090}
1091
1092static int read_brightness_max(struct asus_wmi *asus)
1093{
1094 u32 retval;
1095 int err;
1096
1097 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1098
1099 if (err < 0)
1100 return err;
1101
1102 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1103 retval >>= 8;
1104
1105 if (!retval)
1106 return -ENODEV;
1107
1108 return retval;
1109}
1110
1111static int read_brightness(struct backlight_device *bd)
1112{
1113 struct asus_wmi *asus = bl_get_data(bd);
1114 u32 retval;
1115 int err;
1116
1117 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1118
1119 if (err < 0)
1120 return err;
1121
1122 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1123}
1124
1125static u32 get_scalar_command(struct backlight_device *bd)
1126{
1127 struct asus_wmi *asus = bl_get_data(bd);
1128 u32 ctrl_param = 0;
1129
1130 if ((asus->driver->brightness < bd->props.brightness) ||
1131 bd->props.brightness == bd->props.max_brightness)
1132 ctrl_param = 0x00008001;
1133 else if ((asus->driver->brightness > bd->props.brightness) ||
1134 bd->props.brightness == 0)
1135 ctrl_param = 0x00008000;
1136
1137 asus->driver->brightness = bd->props.brightness;
1138
1139 return ctrl_param;
1140}
1141
1142static int update_bl_status(struct backlight_device *bd)
1143{
1144 struct asus_wmi *asus = bl_get_data(bd);
1145 u32 ctrl_param;
1146 int power, err = 0;
1147
1148 power = read_backlight_power(asus);
1149 if (power != -ENODEV && bd->props.power != power) {
1150 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1151 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1152 ctrl_param, NULL);
1153 if (asus->driver->quirks->store_backlight_power)
1154 asus->driver->panel_power = bd->props.power;
1155
1156 /* When using scalar brightness, updating the brightness
1157 * will mess with the backlight power */
1158 if (asus->driver->quirks->scalar_panel_brightness)
1159 return err;
1160 }
1161
1162 if (asus->driver->quirks->scalar_panel_brightness)
1163 ctrl_param = get_scalar_command(bd);
1164 else
1165 ctrl_param = bd->props.brightness;
1166
1167 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1168 ctrl_param, NULL);
1169
1170 return err;
1171}
1172
1173static const struct backlight_ops asus_wmi_bl_ops = {
1174 .get_brightness = read_brightness,
1175 .update_status = update_bl_status,
1176};
1177
1178static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1179{
1180 struct backlight_device *bd = asus->backlight_device;
1181 int old = bd->props.brightness;
1182 int new = old;
1183
1184 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1185 new = code - NOTIFY_BRNUP_MIN + 1;
1186 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1187 new = code - NOTIFY_BRNDOWN_MIN;
1188
1189 bd->props.brightness = new;
1190 backlight_update_status(bd);
1191 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1192
1193 return old;
1194}
1195
1196static int asus_wmi_backlight_init(struct asus_wmi *asus)
1197{
1198 struct backlight_device *bd;
1199 struct backlight_properties props;
1200 int max;
1201 int power;
1202
1203 max = read_brightness_max(asus);
1204
1205 if (max == -ENODEV)
1206 max = 0;
1207 else if (max < 0)
1208 return max;
1209
1210 power = read_backlight_power(asus);
1211
1212 if (power == -ENODEV)
1213 power = FB_BLANK_UNBLANK;
1214 else if (power < 0)
1215 return power;
1216
1217 memset(&props, 0, sizeof(struct backlight_properties));
1218 props.type = BACKLIGHT_PLATFORM;
1219 props.max_brightness = max;
1220 bd = backlight_device_register(asus->driver->name,
1221 &asus->platform_device->dev, asus,
1222 &asus_wmi_bl_ops, &props);
1223 if (IS_ERR(bd)) {
1224 pr_err("Could not register backlight device\n");
1225 return PTR_ERR(bd);
1226 }
1227
1228 asus->backlight_device = bd;
1229
1230 if (asus->driver->quirks->store_backlight_power)
1231 asus->driver->panel_power = power;
1232
1233 bd->props.brightness = read_brightness(bd);
1234 bd->props.power = power;
1235 backlight_update_status(bd);
1236
1237 asus->driver->brightness = bd->props.brightness;
1238
1239 return 0;
1240}
1241
1242static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1243{
1244 if (asus->backlight_device)
1245 backlight_device_unregister(asus->backlight_device);
1246
1247 asus->backlight_device = NULL;
1248}
1249
1250static void asus_wmi_notify(u32 value, void *context)
1251{
1252 struct asus_wmi *asus = context;
1253 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1254 union acpi_object *obj;
1255 acpi_status status;
1256 int code;
1257 int orig_code;
1258 unsigned int key_value = 1;
1259 bool autorelease = 1;
1260
1261 status = wmi_get_event_data(value, &response);
1262 if (status != AE_OK) {
1263 pr_err("bad event status 0x%x\n", status);
1264 return;
1265 }
1266
1267 obj = (union acpi_object *)response.pointer;
1268
1269 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1270 goto exit;
1271
1272 code = obj->integer.value;
1273 orig_code = code;
1274
1275 if (asus->driver->key_filter) {
1276 asus->driver->key_filter(asus->driver, &code, &key_value,
1277 &autorelease);
1278 if (code == ASUS_WMI_KEY_IGNORE)
1279 goto exit;
1280 }
1281
1282 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1283 code = NOTIFY_BRNUP_MIN;
1284 else if (code >= NOTIFY_BRNDOWN_MIN &&
1285 code <= NOTIFY_BRNDOWN_MAX)
1286 code = NOTIFY_BRNDOWN_MIN;
1287
1288 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1289 if (!acpi_video_backlight_support())
1290 asus_wmi_backlight_notify(asus, orig_code);
1291 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1292 key_value, autorelease))
1293 pr_info("Unknown key %x pressed\n", code);
1294
1295exit:
1296 kfree(obj);
1297}
1298
1299/*
1300 * Sys helpers
1301 */
1302static int parse_arg(const char *buf, unsigned long count, int *val)
1303{
1304 if (!count)
1305 return 0;
1306 if (sscanf(buf, "%i", val) != 1)
1307 return -EINVAL;
1308 return count;
1309}
1310
1311static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1312 const char *buf, size_t count)
1313{
1314 u32 retval;
1315 int rv, err, value;
1316
1317 value = asus_wmi_get_devstate_simple(asus, devid);
1318 if (value == -ENODEV) /* Check device presence */
1319 return value;
1320
1321 rv = parse_arg(buf, count, &value);
1322 err = asus_wmi_set_devstate(devid, value, &retval);
1323
1324 if (err < 0)
1325 return err;
1326
1327 return rv;
1328}
1329
1330static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1331{
1332 int value = asus_wmi_get_devstate_simple(asus, devid);
1333
1334 if (value < 0)
1335 return value;
1336
1337 return sprintf(buf, "%d\n", value);
1338}
1339
1340#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1341 static ssize_t show_##_name(struct device *dev, \
1342 struct device_attribute *attr, \
1343 char *buf) \
1344 { \
1345 struct asus_wmi *asus = dev_get_drvdata(dev); \
1346 \
1347 return show_sys_wmi(asus, _cm, buf); \
1348 } \
1349 static ssize_t store_##_name(struct device *dev, \
1350 struct device_attribute *attr, \
1351 const char *buf, size_t count) \
1352 { \
1353 struct asus_wmi *asus = dev_get_drvdata(dev); \
1354 \
1355 return store_sys_wmi(asus, _cm, buf, count); \
1356 } \
1357 static struct device_attribute dev_attr_##_name = { \
1358 .attr = { \
1359 .name = __stringify(_name), \
1360 .mode = _mode }, \
1361 .show = show_##_name, \
1362 .store = store_##_name, \
1363 }
1364
1365ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1366ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1367ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1368
1369static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1370 const char *buf, size_t count)
1371{
1372 int value, rv;
1373
1374 if (!count || sscanf(buf, "%i", &value) != 1)
1375 return -EINVAL;
1376 if (value < 0 || value > 2)
1377 return -EINVAL;
1378
1379 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1380 if (rv < 0)
1381 return rv;
1382
1383 return count;
1384}
1385
1386static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1387
1388static struct attribute *platform_attributes[] = {
1389 &dev_attr_cpufv.attr,
1390 &dev_attr_camera.attr,
1391 &dev_attr_cardr.attr,
1392 &dev_attr_touchpad.attr,
1393 NULL
1394};
1395
1396static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1397 struct attribute *attr, int idx)
1398{
1399 struct device *dev = container_of(kobj, struct device, kobj);
1400 struct platform_device *pdev = to_platform_device(dev);
1401 struct asus_wmi *asus = platform_get_drvdata(pdev);
1402 bool ok = true;
1403 int devid = -1;
1404
1405 if (attr == &dev_attr_camera.attr)
1406 devid = ASUS_WMI_DEVID_CAMERA;
1407 else if (attr == &dev_attr_cardr.attr)
1408 devid = ASUS_WMI_DEVID_CARDREADER;
1409 else if (attr == &dev_attr_touchpad.attr)
1410 devid = ASUS_WMI_DEVID_TOUCHPAD;
1411
1412 if (devid != -1)
1413 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1414
1415 return ok ? attr->mode : 0;
1416}
1417
1418static struct attribute_group platform_attribute_group = {
1419 .is_visible = asus_sysfs_is_visible,
1420 .attrs = platform_attributes
1421};
1422
1423static void asus_wmi_sysfs_exit(struct platform_device *device)
1424{
1425 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1426}
1427
1428static int asus_wmi_sysfs_init(struct platform_device *device)
1429{
1430 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1431}
1432
1433/*
1434 * Platform device
1435 */
1436static int asus_wmi_platform_init(struct asus_wmi *asus)
1437{
1438 int rv;
1439
1440 /* INIT enable hotkeys on some models */
1441 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1442 pr_info("Initialization: %#x", rv);
1443
1444 /* We don't know yet what to do with this version... */
1445 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1446 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1447 asus->spec = rv;
1448 }
1449
1450 /*
1451 * The SFUN method probably allows the original driver to get the list
1452 * of features supported by a given model. For now, 0x0100 or 0x0800
1453 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1454 * The significance of others is yet to be found.
1455 */
1456 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1457 pr_info("SFUN value: %#x", rv);
1458 asus->sfun = rv;
1459 }
1460
1461 /*
1462 * Eee PC and Notebooks seems to have different method_id for DSTS,
1463 * but it may also be related to the BIOS's SPEC.
1464 * Note, on most Eeepc, there is no way to check if a method exist
1465 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1466 * but once again, SPEC may probably be used for that kind of things.
1467 */
1468 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1469 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1470 else
1471 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1472
1473 /* CWAP allow to define the behavior of the Fn+F2 key,
1474 * this method doesn't seems to be present on Eee PCs */
1475 if (asus->driver->quirks->wapf >= 0)
1476 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1477 asus->driver->quirks->wapf, NULL);
1478
1479 return asus_wmi_sysfs_init(asus->platform_device);
1480}
1481
1482static void asus_wmi_platform_exit(struct asus_wmi *asus)
1483{
1484 asus_wmi_sysfs_exit(asus->platform_device);
1485}
1486
1487/*
1488 * debugfs
1489 */
1490struct asus_wmi_debugfs_node {
1491 struct asus_wmi *asus;
1492 char *name;
1493 int (*show) (struct seq_file *m, void *data);
1494};
1495
1496static int show_dsts(struct seq_file *m, void *data)
1497{
1498 struct asus_wmi *asus = m->private;
1499 int err;
1500 u32 retval = -1;
1501
1502 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1503
1504 if (err < 0)
1505 return err;
1506
1507 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1508
1509 return 0;
1510}
1511
1512static int show_devs(struct seq_file *m, void *data)
1513{
1514 struct asus_wmi *asus = m->private;
1515 int err;
1516 u32 retval = -1;
1517
1518 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1519 &retval);
1520
1521 if (err < 0)
1522 return err;
1523
1524 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1525 asus->debug.ctrl_param, retval);
1526
1527 return 0;
1528}
1529
1530static int show_call(struct seq_file *m, void *data)
1531{
1532 struct asus_wmi *asus = m->private;
1533 struct bios_args args = {
1534 .arg0 = asus->debug.dev_id,
1535 .arg1 = asus->debug.ctrl_param,
1536 };
1537 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1538 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1539 union acpi_object *obj;
1540 acpi_status status;
1541
1542 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1543 1, asus->debug.method_id,
1544 &input, &output);
1545
1546 if (ACPI_FAILURE(status))
1547 return -EIO;
1548
1549 obj = (union acpi_object *)output.pointer;
1550 if (obj && obj->type == ACPI_TYPE_INTEGER)
1551 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1552 asus->debug.dev_id, asus->debug.ctrl_param,
1553 (u32) obj->integer.value);
1554 else
1555 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1556 asus->debug.dev_id, asus->debug.ctrl_param,
1557 obj ? obj->type : -1);
1558
1559 kfree(obj);
1560
1561 return 0;
1562}
1563
1564static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1565 {NULL, "devs", show_devs},
1566 {NULL, "dsts", show_dsts},
1567 {NULL, "call", show_call},
1568};
1569
1570static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1571{
1572 struct asus_wmi_debugfs_node *node = inode->i_private;
1573
1574 return single_open(file, node->show, node->asus);
1575}
1576
1577static const struct file_operations asus_wmi_debugfs_io_ops = {
1578 .owner = THIS_MODULE,
1579 .open = asus_wmi_debugfs_open,
1580 .read = seq_read,
1581 .llseek = seq_lseek,
1582 .release = single_release,
1583};
1584
1585static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1586{
1587 debugfs_remove_recursive(asus->debug.root);
1588}
1589
1590static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1591{
1592 struct dentry *dent;
1593 int i;
1594
1595 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1596 if (!asus->debug.root) {
1597 pr_err("failed to create debugfs directory");
1598 goto error_debugfs;
1599 }
1600
1601 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1602 asus->debug.root, &asus->debug.method_id);
1603 if (!dent)
1604 goto error_debugfs;
1605
1606 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1607 asus->debug.root, &asus->debug.dev_id);
1608 if (!dent)
1609 goto error_debugfs;
1610
1611 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1612 asus->debug.root, &asus->debug.ctrl_param);
1613 if (!dent)
1614 goto error_debugfs;
1615
1616 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1617 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1618
1619 node->asus = asus;
1620 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1621 asus->debug.root, node,
1622 &asus_wmi_debugfs_io_ops);
1623 if (!dent) {
1624 pr_err("failed to create debug file: %s\n", node->name);
1625 goto error_debugfs;
1626 }
1627 }
1628
1629 return 0;
1630
1631error_debugfs:
1632 asus_wmi_debugfs_exit(asus);
1633 return -ENOMEM;
1634}
1635
1636/*
1637 * WMI Driver
1638 */
1639static int asus_wmi_add(struct platform_device *pdev)
1640{
1641 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1642 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1643 struct asus_wmi *asus;
1644 acpi_status status;
1645 int err;
1646
1647 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1648 if (!asus)
1649 return -ENOMEM;
1650
1651 asus->driver = wdrv;
1652 asus->platform_device = pdev;
1653 wdrv->platform_device = pdev;
1654 platform_set_drvdata(asus->platform_device, asus);
1655
1656 if (wdrv->detect_quirks)
1657 wdrv->detect_quirks(asus->driver);
1658
1659 err = asus_wmi_platform_init(asus);
1660 if (err)
1661 goto fail_platform;
1662
1663 err = asus_wmi_input_init(asus);
1664 if (err)
1665 goto fail_input;
1666
1667 err = asus_wmi_hwmon_init(asus);
1668 if (err)
1669 goto fail_hwmon;
1670
1671 err = asus_wmi_led_init(asus);
1672 if (err)
1673 goto fail_leds;
1674
1675 err = asus_wmi_rfkill_init(asus);
1676 if (err)
1677 goto fail_rfkill;
1678
1679 if (!acpi_video_backlight_support()) {
1680 err = asus_wmi_backlight_init(asus);
1681 if (err && err != -ENODEV)
1682 goto fail_backlight;
1683 } else
1684 pr_info("Backlight controlled by ACPI video driver\n");
1685
1686 status = wmi_install_notify_handler(asus->driver->event_guid,
1687 asus_wmi_notify, asus);
1688 if (ACPI_FAILURE(status)) {
1689 pr_err("Unable to register notify handler - %d\n", status);
1690 err = -ENODEV;
1691 goto fail_wmi_handler;
1692 }
1693
1694 err = asus_wmi_debugfs_init(asus);
1695 if (err)
1696 goto fail_debugfs;
1697
1698 return 0;
1699
1700fail_debugfs:
1701 wmi_remove_notify_handler(asus->driver->event_guid);
1702fail_wmi_handler:
1703 asus_wmi_backlight_exit(asus);
1704fail_backlight:
1705 asus_wmi_rfkill_exit(asus);
1706fail_rfkill:
1707 asus_wmi_led_exit(asus);
1708fail_leds:
1709 asus_wmi_hwmon_exit(asus);
1710fail_hwmon:
1711 asus_wmi_input_exit(asus);
1712fail_input:
1713 asus_wmi_platform_exit(asus);
1714fail_platform:
1715 kfree(asus);
1716 return err;
1717}
1718
1719static int asus_wmi_remove(struct platform_device *device)
1720{
1721 struct asus_wmi *asus;
1722
1723 asus = platform_get_drvdata(device);
1724 wmi_remove_notify_handler(asus->driver->event_guid);
1725 asus_wmi_backlight_exit(asus);
1726 asus_wmi_input_exit(asus);
1727 asus_wmi_hwmon_exit(asus);
1728 asus_wmi_led_exit(asus);
1729 asus_wmi_rfkill_exit(asus);
1730 asus_wmi_debugfs_exit(asus);
1731 asus_wmi_platform_exit(asus);
1732
1733 kfree(asus);
1734 return 0;
1735}
1736
1737/*
1738 * Platform driver - hibernate/resume callbacks
1739 */
1740static int asus_hotk_thaw(struct device *device)
1741{
1742 struct asus_wmi *asus = dev_get_drvdata(device);
1743
1744 if (asus->wlan.rfkill) {
1745 bool wlan;
1746
1747 /*
1748 * Work around bios bug - acpi _PTS turns off the wireless led
1749 * during suspend. Normally it restores it on resume, but
1750 * we should kick it ourselves in case hibernation is aborted.
1751 */
1752 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1753 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1754 }
1755
1756 return 0;
1757}
1758
1759static int asus_hotk_restore(struct device *device)
1760{
1761 struct asus_wmi *asus = dev_get_drvdata(device);
1762 int bl;
1763
1764 /* Refresh both wlan rfkill state and pci hotplug */
1765 if (asus->wlan.rfkill)
1766 asus_rfkill_hotplug(asus);
1767
1768 if (asus->bluetooth.rfkill) {
1769 bl = !asus_wmi_get_devstate_simple(asus,
1770 ASUS_WMI_DEVID_BLUETOOTH);
1771 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1772 }
1773 if (asus->wimax.rfkill) {
1774 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1775 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1776 }
1777 if (asus->wwan3g.rfkill) {
1778 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1779 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1780 }
1781 if (asus->gps.rfkill) {
1782 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1783 rfkill_set_sw_state(asus->gps.rfkill, bl);
1784 }
1785 if (asus->uwb.rfkill) {
1786 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1787 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1788 }
1789
1790 return 0;
1791}
1792
1793static const struct dev_pm_ops asus_pm_ops = {
1794 .thaw = asus_hotk_thaw,
1795 .restore = asus_hotk_restore,
1796};
1797
1798static int asus_wmi_probe(struct platform_device *pdev)
1799{
1800 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1801 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1802 int ret;
1803
1804 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1805 pr_warn("Management GUID not found\n");
1806 return -ENODEV;
1807 }
1808
1809 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1810 pr_warn("Event GUID not found\n");
1811 return -ENODEV;
1812 }
1813
1814 if (wdrv->probe) {
1815 ret = wdrv->probe(pdev);
1816 if (ret)
1817 return ret;
1818 }
1819
1820 return asus_wmi_add(pdev);
1821}
1822
1823static bool used;
1824
1825int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1826{
1827 struct platform_driver *platform_driver;
1828 struct platform_device *platform_device;
1829
1830 if (used)
1831 return -EBUSY;
1832
1833 platform_driver = &driver->platform_driver;
1834 platform_driver->remove = asus_wmi_remove;
1835 platform_driver->driver.owner = driver->owner;
1836 platform_driver->driver.name = driver->name;
1837 platform_driver->driver.pm = &asus_pm_ops;
1838
1839 platform_device = platform_create_bundle(platform_driver,
1840 asus_wmi_probe,
1841 NULL, 0, NULL, 0);
1842 if (IS_ERR(platform_device))
1843 return PTR_ERR(platform_device);
1844
1845 used = true;
1846 return 0;
1847}
1848EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1849
1850void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1851{
1852 platform_device_unregister(driver->platform_device);
1853 platform_driver_unregister(&driver->platform_driver);
1854 used = false;
1855}
1856EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1857
1858static int __init asus_wmi_init(void)
1859{
1860 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1861 pr_info("Asus Management GUID not found");
1862 return -ENODEV;
1863 }
1864
1865 pr_info("ASUS WMI generic driver loaded");
1866 return 0;
1867}
1868
1869static void __exit asus_wmi_exit(void)
1870{
1871 pr_info("ASUS WMI generic driver unloaded");
1872}
1873
1874module_init(asus_wmi_init);
1875module_exit(asus_wmi_exit);
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 <linux/thermal.h>
48#include <linux/acpi.h>
49#include <linux/dmi.h>
50#include <acpi/video.h>
51
52#include "asus-wmi.h"
53
54MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55 "Yong Wang <yong.y.wang@intel.com>");
56MODULE_DESCRIPTION("Asus Generic WMI Driver");
57MODULE_LICENSE("GPL");
58
59#define to_asus_wmi_driver(pdrv) \
60 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
61
62#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
63
64#define NOTIFY_BRNUP_MIN 0x11
65#define NOTIFY_BRNUP_MAX 0x1f
66#define NOTIFY_BRNDOWN_MIN 0x20
67#define NOTIFY_BRNDOWN_MAX 0x2e
68#define NOTIFY_KBD_BRTUP 0xc4
69#define NOTIFY_KBD_BRTDWN 0xc5
70
71/* WMI Methods */
72#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
73#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
74#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
75#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
76#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
77#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
78#define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
79#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
80#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
81#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
82#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
83#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
84#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
85#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
86#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
87#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
88#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
89#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
90#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
91#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
92
93#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
94
95/* Wireless */
96#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
97#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
98#define ASUS_WMI_DEVID_CWAP 0x00010003
99#define ASUS_WMI_DEVID_WLAN 0x00010011
100#define ASUS_WMI_DEVID_WLAN_LED 0x00010012
101#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
102#define ASUS_WMI_DEVID_GPS 0x00010015
103#define ASUS_WMI_DEVID_WIMAX 0x00010017
104#define ASUS_WMI_DEVID_WWAN3G 0x00010019
105#define ASUS_WMI_DEVID_UWB 0x00010021
106
107/* Leds */
108/* 0x000200XX and 0x000400XX */
109#define ASUS_WMI_DEVID_LED1 0x00020011
110#define ASUS_WMI_DEVID_LED2 0x00020012
111#define ASUS_WMI_DEVID_LED3 0x00020013
112#define ASUS_WMI_DEVID_LED4 0x00020014
113#define ASUS_WMI_DEVID_LED5 0x00020015
114#define ASUS_WMI_DEVID_LED6 0x00020016
115
116/* Backlight and Brightness */
117#define ASUS_WMI_DEVID_ALS_ENABLE 0x00050001 /* Ambient Light Sensor */
118#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
119#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
120#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
121#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
122
123/* Misc */
124#define ASUS_WMI_DEVID_CAMERA 0x00060013
125
126/* Storage */
127#define ASUS_WMI_DEVID_CARDREADER 0x00080013
128
129/* Input */
130#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
131#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
132
133/* Fan, Thermal */
134#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
135#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
136
137/* Power */
138#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
139
140/* Deep S3 / Resume on LID open */
141#define ASUS_WMI_DEVID_LID_RESUME 0x00120031
142
143/* DSTS masks */
144#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
145#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
146#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
147#define ASUS_WMI_DSTS_USER_BIT 0x00020000
148#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
149#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
150#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
151
152#define ASUS_FAN_DESC "cpu_fan"
153#define ASUS_FAN_MFUN 0x13
154#define ASUS_FAN_SFUN_READ 0x06
155#define ASUS_FAN_SFUN_WRITE 0x07
156#define ASUS_FAN_CTRL_MANUAL 1
157#define ASUS_FAN_CTRL_AUTO 2
158
159#define USB_INTEL_XUSB2PR 0xD0
160#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
161
162static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
163
164struct bios_args {
165 u32 arg0;
166 u32 arg1;
167} __packed;
168
169/*
170 * Struct that's used for all methods called via AGFN. Naming is
171 * identically to the AML code.
172 */
173struct agfn_args {
174 u16 mfun; /* probably "Multi-function" to be called */
175 u16 sfun; /* probably "Sub-function" to be called */
176 u16 len; /* size of the hole struct, including subfunction fields */
177 u8 stas; /* not used by now */
178 u8 err; /* zero on success */
179} __packed;
180
181/* struct used for calling fan read and write methods */
182struct fan_args {
183 struct agfn_args agfn; /* common fields */
184 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
185 u32 speed; /* read: RPM/100 - write: 0-255 */
186} __packed;
187
188/*
189 * <platform>/ - debugfs root directory
190 * dev_id - current dev_id
191 * ctrl_param - current ctrl_param
192 * method_id - current method_id
193 * devs - call DEVS(dev_id, ctrl_param) and print result
194 * dsts - call DSTS(dev_id) and print result
195 * call - call method_id(dev_id, ctrl_param) and print result
196 */
197struct asus_wmi_debug {
198 struct dentry *root;
199 u32 method_id;
200 u32 dev_id;
201 u32 ctrl_param;
202};
203
204struct asus_rfkill {
205 struct asus_wmi *asus;
206 struct rfkill *rfkill;
207 u32 dev_id;
208};
209
210struct asus_wmi {
211 int dsts_id;
212 int spec;
213 int sfun;
214
215 struct input_dev *inputdev;
216 struct backlight_device *backlight_device;
217 struct platform_device *platform_device;
218
219 struct led_classdev wlan_led;
220 int wlan_led_wk;
221 struct led_classdev tpd_led;
222 int tpd_led_wk;
223 struct led_classdev kbd_led;
224 int kbd_led_wk;
225 struct workqueue_struct *led_workqueue;
226 struct work_struct tpd_led_work;
227 struct work_struct kbd_led_work;
228 struct work_struct wlan_led_work;
229
230 struct asus_rfkill wlan;
231 struct asus_rfkill bluetooth;
232 struct asus_rfkill wimax;
233 struct asus_rfkill wwan3g;
234 struct asus_rfkill gps;
235 struct asus_rfkill uwb;
236
237 bool asus_hwmon_fan_manual_mode;
238 int asus_hwmon_num_fans;
239 int asus_hwmon_pwm;
240
241 struct hotplug_slot *hotplug_slot;
242 struct mutex hotplug_lock;
243 struct mutex wmi_lock;
244 struct workqueue_struct *hotplug_workqueue;
245 struct work_struct hotplug_work;
246
247 struct asus_wmi_debug debug;
248
249 struct asus_wmi_driver *driver;
250};
251
252static int asus_wmi_input_init(struct asus_wmi *asus)
253{
254 int err;
255
256 asus->inputdev = input_allocate_device();
257 if (!asus->inputdev)
258 return -ENOMEM;
259
260 asus->inputdev->name = asus->driver->input_name;
261 asus->inputdev->phys = asus->driver->input_phys;
262 asus->inputdev->id.bustype = BUS_HOST;
263 asus->inputdev->dev.parent = &asus->platform_device->dev;
264 set_bit(EV_REP, asus->inputdev->evbit);
265
266 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
267 if (err)
268 goto err_free_dev;
269
270 err = input_register_device(asus->inputdev);
271 if (err)
272 goto err_free_keymap;
273
274 return 0;
275
276err_free_keymap:
277 sparse_keymap_free(asus->inputdev);
278err_free_dev:
279 input_free_device(asus->inputdev);
280 return err;
281}
282
283static void asus_wmi_input_exit(struct asus_wmi *asus)
284{
285 if (asus->inputdev) {
286 sparse_keymap_free(asus->inputdev);
287 input_unregister_device(asus->inputdev);
288 }
289
290 asus->inputdev = NULL;
291}
292
293static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
294 u32 *retval)
295{
296 struct bios_args args = {
297 .arg0 = arg0,
298 .arg1 = arg1,
299 };
300 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
301 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
302 acpi_status status;
303 union acpi_object *obj;
304 u32 tmp = 0;
305
306 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
307 &input, &output);
308
309 if (ACPI_FAILURE(status))
310 goto exit;
311
312 obj = (union acpi_object *)output.pointer;
313 if (obj && obj->type == ACPI_TYPE_INTEGER)
314 tmp = (u32) obj->integer.value;
315
316 if (retval)
317 *retval = tmp;
318
319 kfree(obj);
320
321exit:
322 if (ACPI_FAILURE(status))
323 return -EIO;
324
325 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
326 return -ENODEV;
327
328 return 0;
329}
330
331static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
332{
333 struct acpi_buffer input;
334 u64 phys_addr;
335 u32 retval;
336 u32 status = -1;
337
338 /*
339 * Copy to dma capable address otherwise memory corruption occurs as
340 * bios has to be able to access it.
341 */
342 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
343 input.length = args.length;
344 if (!input.pointer)
345 return -ENOMEM;
346 phys_addr = virt_to_phys(input.pointer);
347 memcpy(input.pointer, args.pointer, args.length);
348
349 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
350 phys_addr, 0, &retval);
351 if (!status)
352 memcpy(args.pointer, input.pointer, args.length);
353
354 kfree(input.pointer);
355 if (status)
356 return -ENXIO;
357
358 return retval;
359}
360
361static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
362{
363 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
364}
365
366static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
367 u32 *retval)
368{
369 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
370 ctrl_param, retval);
371}
372
373/* Helper for special devices with magic return codes */
374static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
375 u32 dev_id, u32 mask)
376{
377 u32 retval = 0;
378 int err;
379
380 err = asus_wmi_get_devstate(asus, dev_id, &retval);
381
382 if (err < 0)
383 return err;
384
385 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
386 return -ENODEV;
387
388 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
389 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
390 return -ENODEV;
391 }
392
393 return retval & mask;
394}
395
396static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
397{
398 return asus_wmi_get_devstate_bits(asus, dev_id,
399 ASUS_WMI_DSTS_STATUS_BIT);
400}
401
402/*
403 * LEDs
404 */
405/*
406 * These functions actually update the LED's, and are called from a
407 * workqueue. By doing this as separate work rather than when the LED
408 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
409 * potentially bad time, such as a timer interrupt.
410 */
411static void tpd_led_update(struct work_struct *work)
412{
413 int ctrl_param;
414 struct asus_wmi *asus;
415
416 asus = container_of(work, struct asus_wmi, tpd_led_work);
417
418 ctrl_param = asus->tpd_led_wk;
419 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
420}
421
422static void tpd_led_set(struct led_classdev *led_cdev,
423 enum led_brightness value)
424{
425 struct asus_wmi *asus;
426
427 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
428
429 asus->tpd_led_wk = !!value;
430 queue_work(asus->led_workqueue, &asus->tpd_led_work);
431}
432
433static int read_tpd_led_state(struct asus_wmi *asus)
434{
435 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
436}
437
438static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
439{
440 struct asus_wmi *asus;
441
442 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
443
444 return read_tpd_led_state(asus);
445}
446
447static void kbd_led_update(struct work_struct *work)
448{
449 int ctrl_param = 0;
450 struct asus_wmi *asus;
451
452 asus = container_of(work, struct asus_wmi, kbd_led_work);
453
454 /*
455 * bits 0-2: level
456 * bit 7: light on/off
457 */
458 if (asus->kbd_led_wk > 0)
459 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
460
461 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
462}
463
464static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
465{
466 int retval;
467
468 /*
469 * bits 0-2: level
470 * bit 7: light on/off
471 * bit 8-10: environment (0: dark, 1: normal, 2: light)
472 * bit 17: status unknown
473 */
474 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
475 0xFFFF);
476
477 /* Unknown status is considered as off */
478 if (retval == 0x8000)
479 retval = 0;
480
481 if (retval >= 0) {
482 if (level)
483 *level = retval & 0x7F;
484 if (env)
485 *env = (retval >> 8) & 0x7F;
486 retval = 0;
487 }
488
489 return retval;
490}
491
492static void kbd_led_set(struct led_classdev *led_cdev,
493 enum led_brightness value)
494{
495 struct asus_wmi *asus;
496
497 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
498
499 if (value > asus->kbd_led.max_brightness)
500 value = asus->kbd_led.max_brightness;
501 else if (value < 0)
502 value = 0;
503
504 asus->kbd_led_wk = value;
505 queue_work(asus->led_workqueue, &asus->kbd_led_work);
506}
507
508static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
509{
510 struct asus_wmi *asus;
511 int retval, value;
512
513 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
514
515 retval = kbd_led_read(asus, &value, NULL);
516
517 if (retval < 0)
518 return retval;
519
520 return value;
521}
522
523static int wlan_led_unknown_state(struct asus_wmi *asus)
524{
525 u32 result;
526
527 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
528
529 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
530}
531
532static int wlan_led_presence(struct asus_wmi *asus)
533{
534 u32 result;
535
536 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
537
538 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
539}
540
541static void wlan_led_update(struct work_struct *work)
542{
543 int ctrl_param;
544 struct asus_wmi *asus;
545
546 asus = container_of(work, struct asus_wmi, wlan_led_work);
547
548 ctrl_param = asus->wlan_led_wk;
549 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
550}
551
552static void wlan_led_set(struct led_classdev *led_cdev,
553 enum led_brightness value)
554{
555 struct asus_wmi *asus;
556
557 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
558
559 asus->wlan_led_wk = !!value;
560 queue_work(asus->led_workqueue, &asus->wlan_led_work);
561}
562
563static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
564{
565 struct asus_wmi *asus;
566 u32 result;
567
568 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
569 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
570
571 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
572}
573
574static void asus_wmi_led_exit(struct asus_wmi *asus)
575{
576 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
577 led_classdev_unregister(&asus->kbd_led);
578 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
579 led_classdev_unregister(&asus->tpd_led);
580 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
581 led_classdev_unregister(&asus->wlan_led);
582 if (asus->led_workqueue)
583 destroy_workqueue(asus->led_workqueue);
584}
585
586static int asus_wmi_led_init(struct asus_wmi *asus)
587{
588 int rv = 0, led_val;
589
590 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
591 if (!asus->led_workqueue)
592 return -ENOMEM;
593
594 if (read_tpd_led_state(asus) >= 0) {
595 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
596
597 asus->tpd_led.name = "asus::touchpad";
598 asus->tpd_led.brightness_set = tpd_led_set;
599 asus->tpd_led.brightness_get = tpd_led_get;
600 asus->tpd_led.max_brightness = 1;
601
602 rv = led_classdev_register(&asus->platform_device->dev,
603 &asus->tpd_led);
604 if (rv)
605 goto error;
606 }
607
608 led_val = kbd_led_read(asus, NULL, NULL);
609 if (led_val >= 0) {
610 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
611
612 asus->kbd_led_wk = led_val;
613 asus->kbd_led.name = "asus::kbd_backlight";
614 asus->kbd_led.brightness_set = kbd_led_set;
615 asus->kbd_led.brightness_get = kbd_led_get;
616 asus->kbd_led.max_brightness = 3;
617
618 rv = led_classdev_register(&asus->platform_device->dev,
619 &asus->kbd_led);
620 if (rv)
621 goto error;
622 }
623
624 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
625 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
626
627 asus->wlan_led.name = "asus::wlan";
628 asus->wlan_led.brightness_set = wlan_led_set;
629 if (!wlan_led_unknown_state(asus))
630 asus->wlan_led.brightness_get = wlan_led_get;
631 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
632 asus->wlan_led.max_brightness = 1;
633 asus->wlan_led.default_trigger = "asus-wlan";
634
635 rv = led_classdev_register(&asus->platform_device->dev,
636 &asus->wlan_led);
637 }
638
639error:
640 if (rv)
641 asus_wmi_led_exit(asus);
642
643 return rv;
644}
645
646
647/*
648 * PCI hotplug (for wlan rfkill)
649 */
650static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
651{
652 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
653
654 if (result < 0)
655 return false;
656 return !result;
657}
658
659static void asus_rfkill_hotplug(struct asus_wmi *asus)
660{
661 struct pci_dev *dev;
662 struct pci_bus *bus;
663 bool blocked;
664 bool absent;
665 u32 l;
666
667 mutex_lock(&asus->wmi_lock);
668 blocked = asus_wlan_rfkill_blocked(asus);
669 mutex_unlock(&asus->wmi_lock);
670
671 mutex_lock(&asus->hotplug_lock);
672 pci_lock_rescan_remove();
673
674 if (asus->wlan.rfkill)
675 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
676
677 if (asus->hotplug_slot) {
678 bus = pci_find_bus(0, 1);
679 if (!bus) {
680 pr_warn("Unable to find PCI bus 1?\n");
681 goto out_unlock;
682 }
683
684 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
685 pr_err("Unable to read PCI config space?\n");
686 goto out_unlock;
687 }
688 absent = (l == 0xffffffff);
689
690 if (blocked != absent) {
691 pr_warn("BIOS says wireless lan is %s, "
692 "but the pci device is %s\n",
693 blocked ? "blocked" : "unblocked",
694 absent ? "absent" : "present");
695 pr_warn("skipped wireless hotplug as probably "
696 "inappropriate for this model\n");
697 goto out_unlock;
698 }
699
700 if (!blocked) {
701 dev = pci_get_slot(bus, 0);
702 if (dev) {
703 /* Device already present */
704 pci_dev_put(dev);
705 goto out_unlock;
706 }
707 dev = pci_scan_single_device(bus, 0);
708 if (dev) {
709 pci_bus_assign_resources(bus);
710 pci_bus_add_device(dev);
711 }
712 } else {
713 dev = pci_get_slot(bus, 0);
714 if (dev) {
715 pci_stop_and_remove_bus_device(dev);
716 pci_dev_put(dev);
717 }
718 }
719 }
720
721out_unlock:
722 pci_unlock_rescan_remove();
723 mutex_unlock(&asus->hotplug_lock);
724}
725
726static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
727{
728 struct asus_wmi *asus = data;
729
730 if (event != ACPI_NOTIFY_BUS_CHECK)
731 return;
732
733 /*
734 * We can't call directly asus_rfkill_hotplug because most
735 * of the time WMBC is still being executed and not reetrant.
736 * There is currently no way to tell ACPICA that we want this
737 * method to be serialized, we schedule a asus_rfkill_hotplug
738 * call later, in a safer context.
739 */
740 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
741}
742
743static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
744{
745 acpi_status status;
746 acpi_handle handle;
747
748 status = acpi_get_handle(NULL, node, &handle);
749
750 if (ACPI_SUCCESS(status)) {
751 status = acpi_install_notify_handler(handle,
752 ACPI_SYSTEM_NOTIFY,
753 asus_rfkill_notify, asus);
754 if (ACPI_FAILURE(status))
755 pr_warn("Failed to register notify on %s\n", node);
756 } else
757 return -ENODEV;
758
759 return 0;
760}
761
762static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
763{
764 acpi_status status = AE_OK;
765 acpi_handle handle;
766
767 status = acpi_get_handle(NULL, node, &handle);
768
769 if (ACPI_SUCCESS(status)) {
770 status = acpi_remove_notify_handler(handle,
771 ACPI_SYSTEM_NOTIFY,
772 asus_rfkill_notify);
773 if (ACPI_FAILURE(status))
774 pr_err("Error removing rfkill notify handler %s\n",
775 node);
776 }
777}
778
779static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
780 u8 *value)
781{
782 struct asus_wmi *asus = hotplug_slot->private;
783 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
784
785 if (result < 0)
786 return result;
787
788 *value = !!result;
789 return 0;
790}
791
792static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
793{
794 kfree(hotplug_slot->info);
795 kfree(hotplug_slot);
796}
797
798static struct hotplug_slot_ops asus_hotplug_slot_ops = {
799 .owner = THIS_MODULE,
800 .get_adapter_status = asus_get_adapter_status,
801 .get_power_status = asus_get_adapter_status,
802};
803
804static void asus_hotplug_work(struct work_struct *work)
805{
806 struct asus_wmi *asus;
807
808 asus = container_of(work, struct asus_wmi, hotplug_work);
809 asus_rfkill_hotplug(asus);
810}
811
812static int asus_setup_pci_hotplug(struct asus_wmi *asus)
813{
814 int ret = -ENOMEM;
815 struct pci_bus *bus = pci_find_bus(0, 1);
816
817 if (!bus) {
818 pr_err("Unable to find wifi PCI bus\n");
819 return -ENODEV;
820 }
821
822 asus->hotplug_workqueue =
823 create_singlethread_workqueue("hotplug_workqueue");
824 if (!asus->hotplug_workqueue)
825 goto error_workqueue;
826
827 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
828
829 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
830 if (!asus->hotplug_slot)
831 goto error_slot;
832
833 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
834 GFP_KERNEL);
835 if (!asus->hotplug_slot->info)
836 goto error_info;
837
838 asus->hotplug_slot->private = asus;
839 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
840 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
841 asus_get_adapter_status(asus->hotplug_slot,
842 &asus->hotplug_slot->info->adapter_status);
843
844 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
845 if (ret) {
846 pr_err("Unable to register hotplug slot - %d\n", ret);
847 goto error_register;
848 }
849
850 return 0;
851
852error_register:
853 kfree(asus->hotplug_slot->info);
854error_info:
855 kfree(asus->hotplug_slot);
856 asus->hotplug_slot = NULL;
857error_slot:
858 destroy_workqueue(asus->hotplug_workqueue);
859error_workqueue:
860 return ret;
861}
862
863/*
864 * Rfkill devices
865 */
866static int asus_rfkill_set(void *data, bool blocked)
867{
868 struct asus_rfkill *priv = data;
869 u32 ctrl_param = !blocked;
870 u32 dev_id = priv->dev_id;
871
872 /*
873 * If the user bit is set, BIOS can't set and record the wlan status,
874 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
875 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
876 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
877 * while setting the wlan status through WMI.
878 * This is also the behavior that windows app will do.
879 */
880 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
881 priv->asus->driver->wlan_ctrl_by_user)
882 dev_id = ASUS_WMI_DEVID_WLAN_LED;
883
884 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
885}
886
887static void asus_rfkill_query(struct rfkill *rfkill, void *data)
888{
889 struct asus_rfkill *priv = data;
890 int result;
891
892 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
893
894 if (result < 0)
895 return;
896
897 rfkill_set_sw_state(priv->rfkill, !result);
898}
899
900static int asus_rfkill_wlan_set(void *data, bool blocked)
901{
902 struct asus_rfkill *priv = data;
903 struct asus_wmi *asus = priv->asus;
904 int ret;
905
906 /*
907 * This handler is enabled only if hotplug is enabled.
908 * In this case, the asus_wmi_set_devstate() will
909 * trigger a wmi notification and we need to wait
910 * this call to finish before being able to call
911 * any wmi method
912 */
913 mutex_lock(&asus->wmi_lock);
914 ret = asus_rfkill_set(data, blocked);
915 mutex_unlock(&asus->wmi_lock);
916 return ret;
917}
918
919static const struct rfkill_ops asus_rfkill_wlan_ops = {
920 .set_block = asus_rfkill_wlan_set,
921 .query = asus_rfkill_query,
922};
923
924static const struct rfkill_ops asus_rfkill_ops = {
925 .set_block = asus_rfkill_set,
926 .query = asus_rfkill_query,
927};
928
929static int asus_new_rfkill(struct asus_wmi *asus,
930 struct asus_rfkill *arfkill,
931 const char *name, enum rfkill_type type, int dev_id)
932{
933 int result = asus_wmi_get_devstate_simple(asus, dev_id);
934 struct rfkill **rfkill = &arfkill->rfkill;
935
936 if (result < 0)
937 return result;
938
939 arfkill->dev_id = dev_id;
940 arfkill->asus = asus;
941
942 if (dev_id == ASUS_WMI_DEVID_WLAN &&
943 asus->driver->quirks->hotplug_wireless)
944 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
945 &asus_rfkill_wlan_ops, arfkill);
946 else
947 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
948 &asus_rfkill_ops, arfkill);
949
950 if (!*rfkill)
951 return -EINVAL;
952
953 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
954 (asus->driver->quirks->wapf > 0))
955 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
956
957 rfkill_init_sw_state(*rfkill, !result);
958 result = rfkill_register(*rfkill);
959 if (result) {
960 rfkill_destroy(*rfkill);
961 *rfkill = NULL;
962 return result;
963 }
964 return 0;
965}
966
967static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
968{
969 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
970 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
971 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
972 if (asus->wlan.rfkill) {
973 rfkill_unregister(asus->wlan.rfkill);
974 rfkill_destroy(asus->wlan.rfkill);
975 asus->wlan.rfkill = NULL;
976 }
977 /*
978 * Refresh pci hotplug in case the rfkill state was changed after
979 * asus_unregister_rfkill_notifier()
980 */
981 asus_rfkill_hotplug(asus);
982 if (asus->hotplug_slot)
983 pci_hp_deregister(asus->hotplug_slot);
984 if (asus->hotplug_workqueue)
985 destroy_workqueue(asus->hotplug_workqueue);
986
987 if (asus->bluetooth.rfkill) {
988 rfkill_unregister(asus->bluetooth.rfkill);
989 rfkill_destroy(asus->bluetooth.rfkill);
990 asus->bluetooth.rfkill = NULL;
991 }
992 if (asus->wimax.rfkill) {
993 rfkill_unregister(asus->wimax.rfkill);
994 rfkill_destroy(asus->wimax.rfkill);
995 asus->wimax.rfkill = NULL;
996 }
997 if (asus->wwan3g.rfkill) {
998 rfkill_unregister(asus->wwan3g.rfkill);
999 rfkill_destroy(asus->wwan3g.rfkill);
1000 asus->wwan3g.rfkill = NULL;
1001 }
1002 if (asus->gps.rfkill) {
1003 rfkill_unregister(asus->gps.rfkill);
1004 rfkill_destroy(asus->gps.rfkill);
1005 asus->gps.rfkill = NULL;
1006 }
1007 if (asus->uwb.rfkill) {
1008 rfkill_unregister(asus->uwb.rfkill);
1009 rfkill_destroy(asus->uwb.rfkill);
1010 asus->uwb.rfkill = NULL;
1011 }
1012}
1013
1014static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1015{
1016 int result = 0;
1017
1018 mutex_init(&asus->hotplug_lock);
1019 mutex_init(&asus->wmi_lock);
1020
1021 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1022 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1023
1024 if (result && result != -ENODEV)
1025 goto exit;
1026
1027 result = asus_new_rfkill(asus, &asus->bluetooth,
1028 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1029 ASUS_WMI_DEVID_BLUETOOTH);
1030
1031 if (result && result != -ENODEV)
1032 goto exit;
1033
1034 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1035 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1036
1037 if (result && result != -ENODEV)
1038 goto exit;
1039
1040 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1041 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1042
1043 if (result && result != -ENODEV)
1044 goto exit;
1045
1046 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1047 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1048
1049 if (result && result != -ENODEV)
1050 goto exit;
1051
1052 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1053 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1054
1055 if (result && result != -ENODEV)
1056 goto exit;
1057
1058 if (!asus->driver->quirks->hotplug_wireless)
1059 goto exit;
1060
1061 result = asus_setup_pci_hotplug(asus);
1062 /*
1063 * If we get -EBUSY then something else is handling the PCI hotplug -
1064 * don't fail in this case
1065 */
1066 if (result == -EBUSY)
1067 result = 0;
1068
1069 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1070 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1071 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1072 /*
1073 * Refresh pci hotplug in case the rfkill state was changed during
1074 * setup.
1075 */
1076 asus_rfkill_hotplug(asus);
1077
1078exit:
1079 if (result && result != -ENODEV)
1080 asus_wmi_rfkill_exit(asus);
1081
1082 if (result == -ENODEV)
1083 result = 0;
1084
1085 return result;
1086}
1087
1088static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1089{
1090 struct pci_dev *xhci_pdev;
1091 u32 orig_ports_available;
1092 u32 ports_available = asus->driver->quirks->xusb2pr;
1093
1094 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1095 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1096 NULL);
1097
1098 if (!xhci_pdev)
1099 return;
1100
1101 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1102 &orig_ports_available);
1103
1104 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1105 cpu_to_le32(ports_available));
1106
1107 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1108 orig_ports_available, ports_available);
1109}
1110
1111/*
1112 * Hwmon device
1113 */
1114static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1115 int *speed)
1116{
1117 struct fan_args args = {
1118 .agfn.len = sizeof(args),
1119 .agfn.mfun = ASUS_FAN_MFUN,
1120 .agfn.sfun = ASUS_FAN_SFUN_READ,
1121 .fan = fan,
1122 .speed = 0,
1123 };
1124 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1125 int status;
1126
1127 if (fan != 1)
1128 return -EINVAL;
1129
1130 status = asus_wmi_evaluate_method_agfn(input);
1131
1132 if (status || args.agfn.err)
1133 return -ENXIO;
1134
1135 if (speed)
1136 *speed = args.speed;
1137
1138 return 0;
1139}
1140
1141static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1142 int *speed)
1143{
1144 struct fan_args args = {
1145 .agfn.len = sizeof(args),
1146 .agfn.mfun = ASUS_FAN_MFUN,
1147 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1148 .fan = fan,
1149 .speed = speed ? *speed : 0,
1150 };
1151 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1152 int status;
1153
1154 /* 1: for setting 1st fan's speed 0: setting auto mode */
1155 if (fan != 1 && fan != 0)
1156 return -EINVAL;
1157
1158 status = asus_wmi_evaluate_method_agfn(input);
1159
1160 if (status || args.agfn.err)
1161 return -ENXIO;
1162
1163 if (speed && fan == 1)
1164 asus->asus_hwmon_pwm = *speed;
1165
1166 return 0;
1167}
1168
1169/*
1170 * Check if we can read the speed of one fan. If true we assume we can also
1171 * control it.
1172 */
1173static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1174{
1175 int status;
1176 int speed = 0;
1177
1178 *num_fans = 0;
1179
1180 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1181 if (!status)
1182 *num_fans = 1;
1183
1184 return 0;
1185}
1186
1187static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1188{
1189 int status;
1190
1191 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1192 if (status)
1193 return -ENXIO;
1194
1195 asus->asus_hwmon_fan_manual_mode = false;
1196
1197 return 0;
1198}
1199
1200static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1201{
1202 struct asus_wmi *asus = dev_get_drvdata(dev);
1203 int value;
1204 int ret;
1205
1206 /* no speed readable on manual mode */
1207 if (asus->asus_hwmon_fan_manual_mode)
1208 return -ENXIO;
1209
1210 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1211 if (ret) {
1212 pr_warn("reading fan speed failed: %d\n", ret);
1213 return -ENXIO;
1214 }
1215
1216 return value;
1217}
1218
1219static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1220{
1221 int err;
1222
1223 if (asus->asus_hwmon_pwm >= 0) {
1224 *value = asus->asus_hwmon_pwm;
1225 return;
1226 }
1227
1228 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1229 if (err < 0)
1230 return;
1231
1232 *value &= 0xFF;
1233
1234 if (*value == 1) /* Low Speed */
1235 *value = 85;
1236 else if (*value == 2)
1237 *value = 170;
1238 else if (*value == 3)
1239 *value = 255;
1240 else if (*value) {
1241 pr_err("Unknown fan speed %#x\n", *value);
1242 *value = -1;
1243 }
1244}
1245
1246static ssize_t pwm1_show(struct device *dev,
1247 struct device_attribute *attr,
1248 char *buf)
1249{
1250 struct asus_wmi *asus = dev_get_drvdata(dev);
1251 int value;
1252
1253 asus_hwmon_pwm_show(asus, 0, &value);
1254
1255 return sprintf(buf, "%d\n", value);
1256}
1257
1258static ssize_t pwm1_store(struct device *dev,
1259 struct device_attribute *attr,
1260 const char *buf, size_t count) {
1261 struct asus_wmi *asus = dev_get_drvdata(dev);
1262 int value;
1263 int state;
1264 int ret;
1265
1266 ret = kstrtouint(buf, 10, &value);
1267
1268 if (ret)
1269 return ret;
1270
1271 value = clamp(value, 0, 255);
1272
1273 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1274 if (state)
1275 pr_warn("Setting fan speed failed: %d\n", state);
1276 else
1277 asus->asus_hwmon_fan_manual_mode = true;
1278
1279 return count;
1280}
1281
1282static ssize_t fan1_input_show(struct device *dev,
1283 struct device_attribute *attr,
1284 char *buf)
1285{
1286 int value = asus_hwmon_fan_rpm_show(dev, 0);
1287
1288 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1289
1290}
1291
1292static ssize_t pwm1_enable_show(struct device *dev,
1293 struct device_attribute *attr,
1294 char *buf)
1295{
1296 struct asus_wmi *asus = dev_get_drvdata(dev);
1297
1298 if (asus->asus_hwmon_fan_manual_mode)
1299 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1300
1301 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1302}
1303
1304static ssize_t pwm1_enable_store(struct device *dev,
1305 struct device_attribute *attr,
1306 const char *buf, size_t count)
1307{
1308 struct asus_wmi *asus = dev_get_drvdata(dev);
1309 int status = 0;
1310 int state;
1311 int ret;
1312
1313 ret = kstrtouint(buf, 10, &state);
1314
1315 if (ret)
1316 return ret;
1317
1318 if (state == ASUS_FAN_CTRL_MANUAL)
1319 asus->asus_hwmon_fan_manual_mode = true;
1320 else
1321 status = asus_hwmon_fan_set_auto(asus);
1322
1323 if (status)
1324 return status;
1325
1326 return count;
1327}
1328
1329static ssize_t fan1_label_show(struct device *dev,
1330 struct device_attribute *attr,
1331 char *buf)
1332{
1333 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1334}
1335
1336static ssize_t asus_hwmon_temp1(struct device *dev,
1337 struct device_attribute *attr,
1338 char *buf)
1339{
1340 struct asus_wmi *asus = dev_get_drvdata(dev);
1341 u32 value;
1342 int err;
1343
1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1345
1346 if (err < 0)
1347 return err;
1348
1349 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1350
1351 return sprintf(buf, "%d\n", value);
1352}
1353
1354/* Fan1 */
1355static DEVICE_ATTR_RW(pwm1);
1356static DEVICE_ATTR_RW(pwm1_enable);
1357static DEVICE_ATTR_RO(fan1_input);
1358static DEVICE_ATTR_RO(fan1_label);
1359
1360/* Temperature */
1361static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1362
1363static struct attribute *hwmon_attributes[] = {
1364 &dev_attr_pwm1.attr,
1365 &dev_attr_pwm1_enable.attr,
1366 &dev_attr_fan1_input.attr,
1367 &dev_attr_fan1_label.attr,
1368
1369 &dev_attr_temp1_input.attr,
1370 NULL
1371};
1372
1373static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1374 struct attribute *attr, int idx)
1375{
1376 struct device *dev = container_of(kobj, struct device, kobj);
1377 struct platform_device *pdev = to_platform_device(dev->parent);
1378 struct asus_wmi *asus = platform_get_drvdata(pdev);
1379 int dev_id = -1;
1380 int fan_attr = -1;
1381 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1382 bool ok = true;
1383
1384 if (attr == &dev_attr_pwm1.attr)
1385 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1386 else if (attr == &dev_attr_temp1_input.attr)
1387 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1388
1389
1390 if (attr == &dev_attr_fan1_input.attr
1391 || attr == &dev_attr_fan1_label.attr
1392 || attr == &dev_attr_pwm1.attr
1393 || attr == &dev_attr_pwm1_enable.attr) {
1394 fan_attr = 1;
1395 }
1396
1397 if (dev_id != -1) {
1398 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1399
1400 if (err < 0 && fan_attr == -1)
1401 return 0; /* can't return negative here */
1402 }
1403
1404 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1405 /*
1406 * We need to find a better way, probably using sfun,
1407 * bits or spec ...
1408 * Currently we disable it if:
1409 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1410 * - reverved bits are non-zero
1411 * - sfun and presence bit are not set
1412 */
1413 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1414 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1415 ok = false;
1416 else
1417 ok = fan_attr <= asus->asus_hwmon_num_fans;
1418 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1419 /* If value is zero, something is clearly wrong */
1420 if (!value)
1421 ok = false;
1422 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1423 ok = true;
1424 } else {
1425 ok = false;
1426 }
1427
1428 return ok ? attr->mode : 0;
1429}
1430
1431static struct attribute_group hwmon_attribute_group = {
1432 .is_visible = asus_hwmon_sysfs_is_visible,
1433 .attrs = hwmon_attributes
1434};
1435__ATTRIBUTE_GROUPS(hwmon_attribute);
1436
1437static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1438{
1439 struct device *hwmon;
1440
1441 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1442 "asus", asus,
1443 hwmon_attribute_groups);
1444 if (IS_ERR(hwmon)) {
1445 pr_err("Could not register asus hwmon device\n");
1446 return PTR_ERR(hwmon);
1447 }
1448 return 0;
1449}
1450
1451/*
1452 * Backlight
1453 */
1454static int read_backlight_power(struct asus_wmi *asus)
1455{
1456 int ret;
1457 if (asus->driver->quirks->store_backlight_power)
1458 ret = !asus->driver->panel_power;
1459 else
1460 ret = asus_wmi_get_devstate_simple(asus,
1461 ASUS_WMI_DEVID_BACKLIGHT);
1462
1463 if (ret < 0)
1464 return ret;
1465
1466 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1467}
1468
1469static int read_brightness_max(struct asus_wmi *asus)
1470{
1471 u32 retval;
1472 int err;
1473
1474 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1475
1476 if (err < 0)
1477 return err;
1478
1479 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1480 retval >>= 8;
1481
1482 if (!retval)
1483 return -ENODEV;
1484
1485 return retval;
1486}
1487
1488static int read_brightness(struct backlight_device *bd)
1489{
1490 struct asus_wmi *asus = bl_get_data(bd);
1491 u32 retval;
1492 int err;
1493
1494 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1495
1496 if (err < 0)
1497 return err;
1498
1499 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1500}
1501
1502static u32 get_scalar_command(struct backlight_device *bd)
1503{
1504 struct asus_wmi *asus = bl_get_data(bd);
1505 u32 ctrl_param = 0;
1506
1507 if ((asus->driver->brightness < bd->props.brightness) ||
1508 bd->props.brightness == bd->props.max_brightness)
1509 ctrl_param = 0x00008001;
1510 else if ((asus->driver->brightness > bd->props.brightness) ||
1511 bd->props.brightness == 0)
1512 ctrl_param = 0x00008000;
1513
1514 asus->driver->brightness = bd->props.brightness;
1515
1516 return ctrl_param;
1517}
1518
1519static int update_bl_status(struct backlight_device *bd)
1520{
1521 struct asus_wmi *asus = bl_get_data(bd);
1522 u32 ctrl_param;
1523 int power, err = 0;
1524
1525 power = read_backlight_power(asus);
1526 if (power != -ENODEV && bd->props.power != power) {
1527 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1528 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1529 ctrl_param, NULL);
1530 if (asus->driver->quirks->store_backlight_power)
1531 asus->driver->panel_power = bd->props.power;
1532
1533 /* When using scalar brightness, updating the brightness
1534 * will mess with the backlight power */
1535 if (asus->driver->quirks->scalar_panel_brightness)
1536 return err;
1537 }
1538
1539 if (asus->driver->quirks->scalar_panel_brightness)
1540 ctrl_param = get_scalar_command(bd);
1541 else
1542 ctrl_param = bd->props.brightness;
1543
1544 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1545 ctrl_param, NULL);
1546
1547 return err;
1548}
1549
1550static const struct backlight_ops asus_wmi_bl_ops = {
1551 .get_brightness = read_brightness,
1552 .update_status = update_bl_status,
1553};
1554
1555static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1556{
1557 struct backlight_device *bd = asus->backlight_device;
1558 int old = bd->props.brightness;
1559 int new = old;
1560
1561 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1562 new = code - NOTIFY_BRNUP_MIN + 1;
1563 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1564 new = code - NOTIFY_BRNDOWN_MIN;
1565
1566 bd->props.brightness = new;
1567 backlight_update_status(bd);
1568 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1569
1570 return old;
1571}
1572
1573static int asus_wmi_backlight_init(struct asus_wmi *asus)
1574{
1575 struct backlight_device *bd;
1576 struct backlight_properties props;
1577 int max;
1578 int power;
1579
1580 max = read_brightness_max(asus);
1581 if (max < 0)
1582 return max;
1583
1584 power = read_backlight_power(asus);
1585
1586 if (power == -ENODEV)
1587 power = FB_BLANK_UNBLANK;
1588 else if (power < 0)
1589 return power;
1590
1591 memset(&props, 0, sizeof(struct backlight_properties));
1592 props.type = BACKLIGHT_PLATFORM;
1593 props.max_brightness = max;
1594 bd = backlight_device_register(asus->driver->name,
1595 &asus->platform_device->dev, asus,
1596 &asus_wmi_bl_ops, &props);
1597 if (IS_ERR(bd)) {
1598 pr_err("Could not register backlight device\n");
1599 return PTR_ERR(bd);
1600 }
1601
1602 asus->backlight_device = bd;
1603
1604 if (asus->driver->quirks->store_backlight_power)
1605 asus->driver->panel_power = power;
1606
1607 bd->props.brightness = read_brightness(bd);
1608 bd->props.power = power;
1609 backlight_update_status(bd);
1610
1611 asus->driver->brightness = bd->props.brightness;
1612
1613 return 0;
1614}
1615
1616static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1617{
1618 backlight_device_unregister(asus->backlight_device);
1619
1620 asus->backlight_device = NULL;
1621}
1622
1623static int is_display_toggle(int code)
1624{
1625 /* display toggle keys */
1626 if ((code >= 0x61 && code <= 0x67) ||
1627 (code >= 0x8c && code <= 0x93) ||
1628 (code >= 0xa0 && code <= 0xa7) ||
1629 (code >= 0xd0 && code <= 0xd5))
1630 return 1;
1631
1632 return 0;
1633}
1634
1635static void asus_wmi_notify(u32 value, void *context)
1636{
1637 struct asus_wmi *asus = context;
1638 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1639 union acpi_object *obj;
1640 acpi_status status;
1641 int code;
1642 int orig_code;
1643 unsigned int key_value = 1;
1644 bool autorelease = 1;
1645
1646 status = wmi_get_event_data(value, &response);
1647 if (status != AE_OK) {
1648 pr_err("bad event status 0x%x\n", status);
1649 return;
1650 }
1651
1652 obj = (union acpi_object *)response.pointer;
1653
1654 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1655 goto exit;
1656
1657 code = obj->integer.value;
1658 orig_code = code;
1659
1660 if (asus->driver->key_filter) {
1661 asus->driver->key_filter(asus->driver, &code, &key_value,
1662 &autorelease);
1663 if (code == ASUS_WMI_KEY_IGNORE)
1664 goto exit;
1665 }
1666
1667 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1668 code = ASUS_WMI_BRN_UP;
1669 else if (code >= NOTIFY_BRNDOWN_MIN &&
1670 code <= NOTIFY_BRNDOWN_MAX)
1671 code = ASUS_WMI_BRN_DOWN;
1672
1673 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1674 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1675 asus_wmi_backlight_notify(asus, orig_code);
1676 goto exit;
1677 }
1678 }
1679
1680 if (is_display_toggle(code) &&
1681 asus->driver->quirks->no_display_toggle)
1682 goto exit;
1683
1684 if (!sparse_keymap_report_event(asus->inputdev, code,
1685 key_value, autorelease))
1686 pr_info("Unknown key %x pressed\n", code);
1687
1688exit:
1689 kfree(obj);
1690}
1691
1692/*
1693 * Sys helpers
1694 */
1695static int parse_arg(const char *buf, unsigned long count, int *val)
1696{
1697 if (!count)
1698 return 0;
1699 if (sscanf(buf, "%i", val) != 1)
1700 return -EINVAL;
1701 return count;
1702}
1703
1704static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1705 const char *buf, size_t count)
1706{
1707 u32 retval;
1708 int rv, err, value;
1709
1710 value = asus_wmi_get_devstate_simple(asus, devid);
1711 if (value < 0)
1712 return value;
1713
1714 rv = parse_arg(buf, count, &value);
1715 err = asus_wmi_set_devstate(devid, value, &retval);
1716
1717 if (err < 0)
1718 return err;
1719
1720 return rv;
1721}
1722
1723static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1724{
1725 int value = asus_wmi_get_devstate_simple(asus, devid);
1726
1727 if (value < 0)
1728 return value;
1729
1730 return sprintf(buf, "%d\n", value);
1731}
1732
1733#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1734 static ssize_t show_##_name(struct device *dev, \
1735 struct device_attribute *attr, \
1736 char *buf) \
1737 { \
1738 struct asus_wmi *asus = dev_get_drvdata(dev); \
1739 \
1740 return show_sys_wmi(asus, _cm, buf); \
1741 } \
1742 static ssize_t store_##_name(struct device *dev, \
1743 struct device_attribute *attr, \
1744 const char *buf, size_t count) \
1745 { \
1746 struct asus_wmi *asus = dev_get_drvdata(dev); \
1747 \
1748 return store_sys_wmi(asus, _cm, buf, count); \
1749 } \
1750 static struct device_attribute dev_attr_##_name = { \
1751 .attr = { \
1752 .name = __stringify(_name), \
1753 .mode = _mode }, \
1754 .show = show_##_name, \
1755 .store = store_##_name, \
1756 }
1757
1758ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1759ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1760ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1761ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1762ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1763
1764static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1765 const char *buf, size_t count)
1766{
1767 int value, rv;
1768
1769 if (!count || sscanf(buf, "%i", &value) != 1)
1770 return -EINVAL;
1771 if (value < 0 || value > 2)
1772 return -EINVAL;
1773
1774 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1775 if (rv < 0)
1776 return rv;
1777
1778 return count;
1779}
1780
1781static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1782
1783static struct attribute *platform_attributes[] = {
1784 &dev_attr_cpufv.attr,
1785 &dev_attr_camera.attr,
1786 &dev_attr_cardr.attr,
1787 &dev_attr_touchpad.attr,
1788 &dev_attr_lid_resume.attr,
1789 &dev_attr_als_enable.attr,
1790 NULL
1791};
1792
1793static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1794 struct attribute *attr, int idx)
1795{
1796 struct device *dev = container_of(kobj, struct device, kobj);
1797 struct platform_device *pdev = to_platform_device(dev);
1798 struct asus_wmi *asus = platform_get_drvdata(pdev);
1799 bool ok = true;
1800 int devid = -1;
1801
1802 if (attr == &dev_attr_camera.attr)
1803 devid = ASUS_WMI_DEVID_CAMERA;
1804 else if (attr == &dev_attr_cardr.attr)
1805 devid = ASUS_WMI_DEVID_CARDREADER;
1806 else if (attr == &dev_attr_touchpad.attr)
1807 devid = ASUS_WMI_DEVID_TOUCHPAD;
1808 else if (attr == &dev_attr_lid_resume.attr)
1809 devid = ASUS_WMI_DEVID_LID_RESUME;
1810 else if (attr == &dev_attr_als_enable.attr)
1811 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1812
1813 if (devid != -1)
1814 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1815
1816 return ok ? attr->mode : 0;
1817}
1818
1819static struct attribute_group platform_attribute_group = {
1820 .is_visible = asus_sysfs_is_visible,
1821 .attrs = platform_attributes
1822};
1823
1824static void asus_wmi_sysfs_exit(struct platform_device *device)
1825{
1826 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1827}
1828
1829static int asus_wmi_sysfs_init(struct platform_device *device)
1830{
1831 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1832}
1833
1834/*
1835 * Platform device
1836 */
1837static int asus_wmi_platform_init(struct asus_wmi *asus)
1838{
1839 int rv;
1840
1841 /* INIT enable hotkeys on some models */
1842 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1843 pr_info("Initialization: %#x\n", rv);
1844
1845 /* We don't know yet what to do with this version... */
1846 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1847 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1848 asus->spec = rv;
1849 }
1850
1851 /*
1852 * The SFUN method probably allows the original driver to get the list
1853 * of features supported by a given model. For now, 0x0100 or 0x0800
1854 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1855 * The significance of others is yet to be found.
1856 */
1857 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1858 pr_info("SFUN value: %#x\n", rv);
1859 asus->sfun = rv;
1860 }
1861
1862 /*
1863 * Eee PC and Notebooks seems to have different method_id for DSTS,
1864 * but it may also be related to the BIOS's SPEC.
1865 * Note, on most Eeepc, there is no way to check if a method exist
1866 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1867 * but once again, SPEC may probably be used for that kind of things.
1868 */
1869 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1870 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1871 else
1872 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1873
1874 /* CWAP allow to define the behavior of the Fn+F2 key,
1875 * this method doesn't seems to be present on Eee PCs */
1876 if (asus->driver->quirks->wapf >= 0)
1877 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1878 asus->driver->quirks->wapf, NULL);
1879
1880 return asus_wmi_sysfs_init(asus->platform_device);
1881}
1882
1883static void asus_wmi_platform_exit(struct asus_wmi *asus)
1884{
1885 asus_wmi_sysfs_exit(asus->platform_device);
1886}
1887
1888/*
1889 * debugfs
1890 */
1891struct asus_wmi_debugfs_node {
1892 struct asus_wmi *asus;
1893 char *name;
1894 int (*show) (struct seq_file *m, void *data);
1895};
1896
1897static int show_dsts(struct seq_file *m, void *data)
1898{
1899 struct asus_wmi *asus = m->private;
1900 int err;
1901 u32 retval = -1;
1902
1903 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1904
1905 if (err < 0)
1906 return err;
1907
1908 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1909
1910 return 0;
1911}
1912
1913static int show_devs(struct seq_file *m, void *data)
1914{
1915 struct asus_wmi *asus = m->private;
1916 int err;
1917 u32 retval = -1;
1918
1919 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1920 &retval);
1921
1922 if (err < 0)
1923 return err;
1924
1925 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1926 asus->debug.ctrl_param, retval);
1927
1928 return 0;
1929}
1930
1931static int show_call(struct seq_file *m, void *data)
1932{
1933 struct asus_wmi *asus = m->private;
1934 struct bios_args args = {
1935 .arg0 = asus->debug.dev_id,
1936 .arg1 = asus->debug.ctrl_param,
1937 };
1938 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1939 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1940 union acpi_object *obj;
1941 acpi_status status;
1942
1943 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1944 1, asus->debug.method_id,
1945 &input, &output);
1946
1947 if (ACPI_FAILURE(status))
1948 return -EIO;
1949
1950 obj = (union acpi_object *)output.pointer;
1951 if (obj && obj->type == ACPI_TYPE_INTEGER)
1952 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1953 asus->debug.dev_id, asus->debug.ctrl_param,
1954 (u32) obj->integer.value);
1955 else
1956 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1957 asus->debug.dev_id, asus->debug.ctrl_param,
1958 obj ? obj->type : -1);
1959
1960 kfree(obj);
1961
1962 return 0;
1963}
1964
1965static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1966 {NULL, "devs", show_devs},
1967 {NULL, "dsts", show_dsts},
1968 {NULL, "call", show_call},
1969};
1970
1971static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1972{
1973 struct asus_wmi_debugfs_node *node = inode->i_private;
1974
1975 return single_open(file, node->show, node->asus);
1976}
1977
1978static const struct file_operations asus_wmi_debugfs_io_ops = {
1979 .owner = THIS_MODULE,
1980 .open = asus_wmi_debugfs_open,
1981 .read = seq_read,
1982 .llseek = seq_lseek,
1983 .release = single_release,
1984};
1985
1986static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1987{
1988 debugfs_remove_recursive(asus->debug.root);
1989}
1990
1991static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1992{
1993 struct dentry *dent;
1994 int i;
1995
1996 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1997 if (!asus->debug.root) {
1998 pr_err("failed to create debugfs directory\n");
1999 goto error_debugfs;
2000 }
2001
2002 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2003 asus->debug.root, &asus->debug.method_id);
2004 if (!dent)
2005 goto error_debugfs;
2006
2007 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2008 asus->debug.root, &asus->debug.dev_id);
2009 if (!dent)
2010 goto error_debugfs;
2011
2012 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2013 asus->debug.root, &asus->debug.ctrl_param);
2014 if (!dent)
2015 goto error_debugfs;
2016
2017 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2018 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2019
2020 node->asus = asus;
2021 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2022 asus->debug.root, node,
2023 &asus_wmi_debugfs_io_ops);
2024 if (!dent) {
2025 pr_err("failed to create debug file: %s\n", node->name);
2026 goto error_debugfs;
2027 }
2028 }
2029
2030 return 0;
2031
2032error_debugfs:
2033 asus_wmi_debugfs_exit(asus);
2034 return -ENOMEM;
2035}
2036
2037static int asus_wmi_fan_init(struct asus_wmi *asus)
2038{
2039 int status;
2040
2041 asus->asus_hwmon_pwm = -1;
2042 asus->asus_hwmon_num_fans = -1;
2043 asus->asus_hwmon_fan_manual_mode = false;
2044
2045 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2046 if (status) {
2047 asus->asus_hwmon_num_fans = 0;
2048 pr_warn("Could not determine number of fans: %d\n", status);
2049 return -ENXIO;
2050 }
2051
2052 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2053 return 0;
2054}
2055
2056static bool ashs_present(void)
2057{
2058 int i = 0;
2059 while (ashs_ids[i]) {
2060 if (acpi_dev_found(ashs_ids[i++]))
2061 return true;
2062 }
2063 return false;
2064}
2065
2066/*
2067 * WMI Driver
2068 */
2069static int asus_wmi_add(struct platform_device *pdev)
2070{
2071 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2072 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2073 struct asus_wmi *asus;
2074 const char *chassis_type;
2075 acpi_status status;
2076 int err;
2077 u32 result;
2078
2079 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2080 if (!asus)
2081 return -ENOMEM;
2082
2083 asus->driver = wdrv;
2084 asus->platform_device = pdev;
2085 wdrv->platform_device = pdev;
2086 platform_set_drvdata(asus->platform_device, asus);
2087
2088 if (wdrv->detect_quirks)
2089 wdrv->detect_quirks(asus->driver);
2090
2091 err = asus_wmi_platform_init(asus);
2092 if (err)
2093 goto fail_platform;
2094
2095 err = asus_wmi_input_init(asus);
2096 if (err)
2097 goto fail_input;
2098
2099 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2100 asus_hwmon_fan_set_auto(asus);
2101
2102 err = asus_wmi_hwmon_init(asus);
2103 if (err)
2104 goto fail_hwmon;
2105
2106 err = asus_wmi_led_init(asus);
2107 if (err)
2108 goto fail_leds;
2109
2110 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2111 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2112 asus->driver->wlan_ctrl_by_user = 1;
2113
2114 if (asus->driver->wlan_ctrl_by_user && ashs_present())
2115 asus->driver->quirks->no_rfkill = 1;
2116
2117 if (!asus->driver->quirks->no_rfkill) {
2118 err = asus_wmi_rfkill_init(asus);
2119 if (err)
2120 goto fail_rfkill;
2121 }
2122
2123 /* Some Asus desktop boards export an acpi-video backlight interface,
2124 stop this from showing up */
2125 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2126 if (chassis_type && !strcmp(chassis_type, "3"))
2127 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2128
2129 if (asus->driver->quirks->wmi_backlight_power)
2130 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2131
2132 if (asus->driver->quirks->wmi_backlight_native)
2133 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2134
2135 if (asus->driver->quirks->xusb2pr)
2136 asus_wmi_set_xusb2pr(asus);
2137
2138 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2139 err = asus_wmi_backlight_init(asus);
2140 if (err && err != -ENODEV)
2141 goto fail_backlight;
2142 }
2143
2144 status = wmi_install_notify_handler(asus->driver->event_guid,
2145 asus_wmi_notify, asus);
2146 if (ACPI_FAILURE(status)) {
2147 pr_err("Unable to register notify handler - %d\n", status);
2148 err = -ENODEV;
2149 goto fail_wmi_handler;
2150 }
2151
2152 err = asus_wmi_debugfs_init(asus);
2153 if (err)
2154 goto fail_debugfs;
2155
2156 return 0;
2157
2158fail_debugfs:
2159 wmi_remove_notify_handler(asus->driver->event_guid);
2160fail_wmi_handler:
2161 asus_wmi_backlight_exit(asus);
2162fail_backlight:
2163 asus_wmi_rfkill_exit(asus);
2164fail_rfkill:
2165 asus_wmi_led_exit(asus);
2166fail_leds:
2167fail_hwmon:
2168 asus_wmi_input_exit(asus);
2169fail_input:
2170 asus_wmi_platform_exit(asus);
2171fail_platform:
2172 kfree(asus);
2173 return err;
2174}
2175
2176static int asus_wmi_remove(struct platform_device *device)
2177{
2178 struct asus_wmi *asus;
2179
2180 asus = platform_get_drvdata(device);
2181 wmi_remove_notify_handler(asus->driver->event_guid);
2182 asus_wmi_backlight_exit(asus);
2183 asus_wmi_input_exit(asus);
2184 asus_wmi_led_exit(asus);
2185 asus_wmi_rfkill_exit(asus);
2186 asus_wmi_debugfs_exit(asus);
2187 asus_wmi_platform_exit(asus);
2188 asus_hwmon_fan_set_auto(asus);
2189
2190 kfree(asus);
2191 return 0;
2192}
2193
2194/*
2195 * Platform driver - hibernate/resume callbacks
2196 */
2197static int asus_hotk_thaw(struct device *device)
2198{
2199 struct asus_wmi *asus = dev_get_drvdata(device);
2200
2201 if (asus->wlan.rfkill) {
2202 bool wlan;
2203
2204 /*
2205 * Work around bios bug - acpi _PTS turns off the wireless led
2206 * during suspend. Normally it restores it on resume, but
2207 * we should kick it ourselves in case hibernation is aborted.
2208 */
2209 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2210 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2211 }
2212
2213 return 0;
2214}
2215
2216static int asus_hotk_resume(struct device *device)
2217{
2218 struct asus_wmi *asus = dev_get_drvdata(device);
2219
2220 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2221 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2222
2223 return 0;
2224}
2225
2226static int asus_hotk_restore(struct device *device)
2227{
2228 struct asus_wmi *asus = dev_get_drvdata(device);
2229 int bl;
2230
2231 /* Refresh both wlan rfkill state and pci hotplug */
2232 if (asus->wlan.rfkill)
2233 asus_rfkill_hotplug(asus);
2234
2235 if (asus->bluetooth.rfkill) {
2236 bl = !asus_wmi_get_devstate_simple(asus,
2237 ASUS_WMI_DEVID_BLUETOOTH);
2238 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2239 }
2240 if (asus->wimax.rfkill) {
2241 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2242 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2243 }
2244 if (asus->wwan3g.rfkill) {
2245 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2246 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2247 }
2248 if (asus->gps.rfkill) {
2249 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2250 rfkill_set_sw_state(asus->gps.rfkill, bl);
2251 }
2252 if (asus->uwb.rfkill) {
2253 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2254 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2255 }
2256 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2257 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2258
2259 return 0;
2260}
2261
2262static const struct dev_pm_ops asus_pm_ops = {
2263 .thaw = asus_hotk_thaw,
2264 .restore = asus_hotk_restore,
2265 .resume = asus_hotk_resume,
2266};
2267
2268static int asus_wmi_probe(struct platform_device *pdev)
2269{
2270 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2271 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2272 int ret;
2273
2274 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2275 pr_warn("Management GUID not found\n");
2276 return -ENODEV;
2277 }
2278
2279 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2280 pr_warn("Event GUID not found\n");
2281 return -ENODEV;
2282 }
2283
2284 if (wdrv->probe) {
2285 ret = wdrv->probe(pdev);
2286 if (ret)
2287 return ret;
2288 }
2289
2290 return asus_wmi_add(pdev);
2291}
2292
2293static bool used;
2294
2295int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2296{
2297 struct platform_driver *platform_driver;
2298 struct platform_device *platform_device;
2299
2300 if (used)
2301 return -EBUSY;
2302
2303 platform_driver = &driver->platform_driver;
2304 platform_driver->remove = asus_wmi_remove;
2305 platform_driver->driver.owner = driver->owner;
2306 platform_driver->driver.name = driver->name;
2307 platform_driver->driver.pm = &asus_pm_ops;
2308
2309 platform_device = platform_create_bundle(platform_driver,
2310 asus_wmi_probe,
2311 NULL, 0, NULL, 0);
2312 if (IS_ERR(platform_device))
2313 return PTR_ERR(platform_device);
2314
2315 used = true;
2316 return 0;
2317}
2318EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2319
2320void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2321{
2322 platform_device_unregister(driver->platform_device);
2323 platform_driver_unregister(&driver->platform_driver);
2324 used = false;
2325}
2326EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2327
2328static int __init asus_wmi_init(void)
2329{
2330 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2331 pr_info("Asus Management GUID not found\n");
2332 return -ENODEV;
2333 }
2334
2335 pr_info("ASUS WMI generic driver loaded\n");
2336 return 0;
2337}
2338
2339static void __exit asus_wmi_exit(void)
2340{
2341 pr_info("ASUS WMI generic driver unloaded\n");
2342}
2343
2344module_init(asus_wmi_init);
2345module_exit(asus_wmi_exit);