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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#define ASUS_WMI_DEVID_LIGHTBAR 0x00050025
123
124/* Misc */
125#define ASUS_WMI_DEVID_CAMERA 0x00060013
126
127/* Storage */
128#define ASUS_WMI_DEVID_CARDREADER 0x00080013
129
130/* Input */
131#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
132#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
133
134/* Fan, Thermal */
135#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
136#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
137
138/* Power */
139#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
140
141/* Deep S3 / Resume on LID open */
142#define ASUS_WMI_DEVID_LID_RESUME 0x00120031
143
144/* DSTS masks */
145#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
146#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
147#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
148#define ASUS_WMI_DSTS_USER_BIT 0x00020000
149#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
150#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
151#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
152#define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F
153
154#define ASUS_FAN_DESC "cpu_fan"
155#define ASUS_FAN_MFUN 0x13
156#define ASUS_FAN_SFUN_READ 0x06
157#define ASUS_FAN_SFUN_WRITE 0x07
158#define ASUS_FAN_CTRL_MANUAL 1
159#define ASUS_FAN_CTRL_AUTO 2
160
161#define USB_INTEL_XUSB2PR 0xD0
162#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
163
164static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
165
166static bool ashs_present(void)
167{
168 int i = 0;
169 while (ashs_ids[i]) {
170 if (acpi_dev_found(ashs_ids[i++]))
171 return true;
172 }
173 return false;
174}
175
176struct bios_args {
177 u32 arg0;
178 u32 arg1;
179} __packed;
180
181/*
182 * Struct that's used for all methods called via AGFN. Naming is
183 * identically to the AML code.
184 */
185struct agfn_args {
186 u16 mfun; /* probably "Multi-function" to be called */
187 u16 sfun; /* probably "Sub-function" to be called */
188 u16 len; /* size of the hole struct, including subfunction fields */
189 u8 stas; /* not used by now */
190 u8 err; /* zero on success */
191} __packed;
192
193/* struct used for calling fan read and write methods */
194struct fan_args {
195 struct agfn_args agfn; /* common fields */
196 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
197 u32 speed; /* read: RPM/100 - write: 0-255 */
198} __packed;
199
200/*
201 * <platform>/ - debugfs root directory
202 * dev_id - current dev_id
203 * ctrl_param - current ctrl_param
204 * method_id - current method_id
205 * devs - call DEVS(dev_id, ctrl_param) and print result
206 * dsts - call DSTS(dev_id) and print result
207 * call - call method_id(dev_id, ctrl_param) and print result
208 */
209struct asus_wmi_debug {
210 struct dentry *root;
211 u32 method_id;
212 u32 dev_id;
213 u32 ctrl_param;
214};
215
216struct asus_rfkill {
217 struct asus_wmi *asus;
218 struct rfkill *rfkill;
219 u32 dev_id;
220};
221
222struct asus_wmi {
223 int dsts_id;
224 int spec;
225 int sfun;
226
227 struct input_dev *inputdev;
228 struct backlight_device *backlight_device;
229 struct platform_device *platform_device;
230
231 struct led_classdev wlan_led;
232 int wlan_led_wk;
233 struct led_classdev tpd_led;
234 int tpd_led_wk;
235 struct led_classdev kbd_led;
236 int kbd_led_wk;
237 struct led_classdev lightbar_led;
238 int lightbar_led_wk;
239 struct workqueue_struct *led_workqueue;
240 struct work_struct tpd_led_work;
241 struct work_struct kbd_led_work;
242 struct work_struct wlan_led_work;
243 struct work_struct lightbar_led_work;
244
245 struct asus_rfkill wlan;
246 struct asus_rfkill bluetooth;
247 struct asus_rfkill wimax;
248 struct asus_rfkill wwan3g;
249 struct asus_rfkill gps;
250 struct asus_rfkill uwb;
251
252 bool asus_hwmon_fan_manual_mode;
253 int asus_hwmon_num_fans;
254 int asus_hwmon_pwm;
255
256 struct hotplug_slot *hotplug_slot;
257 struct mutex hotplug_lock;
258 struct mutex wmi_lock;
259 struct workqueue_struct *hotplug_workqueue;
260 struct work_struct hotplug_work;
261
262 struct asus_wmi_debug debug;
263
264 struct asus_wmi_driver *driver;
265};
266
267static int asus_wmi_input_init(struct asus_wmi *asus)
268{
269 int err;
270
271 asus->inputdev = input_allocate_device();
272 if (!asus->inputdev)
273 return -ENOMEM;
274
275 asus->inputdev->name = asus->driver->input_name;
276 asus->inputdev->phys = asus->driver->input_phys;
277 asus->inputdev->id.bustype = BUS_HOST;
278 asus->inputdev->dev.parent = &asus->platform_device->dev;
279 set_bit(EV_REP, asus->inputdev->evbit);
280
281 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
282 if (err)
283 goto err_free_dev;
284
285 err = input_register_device(asus->inputdev);
286 if (err)
287 goto err_free_dev;
288
289 return 0;
290
291err_free_dev:
292 input_free_device(asus->inputdev);
293 return err;
294}
295
296static void asus_wmi_input_exit(struct asus_wmi *asus)
297{
298 if (asus->inputdev)
299 input_unregister_device(asus->inputdev);
300
301 asus->inputdev = NULL;
302}
303
304static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
305 u32 *retval)
306{
307 struct bios_args args = {
308 .arg0 = arg0,
309 .arg1 = arg1,
310 };
311 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
312 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
313 acpi_status status;
314 union acpi_object *obj;
315 u32 tmp = 0;
316
317 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
318 &input, &output);
319
320 if (ACPI_FAILURE(status))
321 goto exit;
322
323 obj = (union acpi_object *)output.pointer;
324 if (obj && obj->type == ACPI_TYPE_INTEGER)
325 tmp = (u32) obj->integer.value;
326
327 if (retval)
328 *retval = tmp;
329
330 kfree(obj);
331
332exit:
333 if (ACPI_FAILURE(status))
334 return -EIO;
335
336 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
337 return -ENODEV;
338
339 return 0;
340}
341
342static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
343{
344 struct acpi_buffer input;
345 u64 phys_addr;
346 u32 retval;
347 u32 status = -1;
348
349 /*
350 * Copy to dma capable address otherwise memory corruption occurs as
351 * bios has to be able to access it.
352 */
353 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
354 input.length = args.length;
355 if (!input.pointer)
356 return -ENOMEM;
357 phys_addr = virt_to_phys(input.pointer);
358 memcpy(input.pointer, args.pointer, args.length);
359
360 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
361 phys_addr, 0, &retval);
362 if (!status)
363 memcpy(args.pointer, input.pointer, args.length);
364
365 kfree(input.pointer);
366 if (status)
367 return -ENXIO;
368
369 return retval;
370}
371
372static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
373{
374 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
375}
376
377static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
378 u32 *retval)
379{
380 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
381 ctrl_param, retval);
382}
383
384/* Helper for special devices with magic return codes */
385static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
386 u32 dev_id, u32 mask)
387{
388 u32 retval = 0;
389 int err;
390
391 err = asus_wmi_get_devstate(asus, dev_id, &retval);
392
393 if (err < 0)
394 return err;
395
396 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
397 return -ENODEV;
398
399 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
400 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
401 return -ENODEV;
402 }
403
404 return retval & mask;
405}
406
407static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
408{
409 return asus_wmi_get_devstate_bits(asus, dev_id,
410 ASUS_WMI_DSTS_STATUS_BIT);
411}
412
413/*
414 * LEDs
415 */
416/*
417 * These functions actually update the LED's, and are called from a
418 * workqueue. By doing this as separate work rather than when the LED
419 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
420 * potentially bad time, such as a timer interrupt.
421 */
422static void tpd_led_update(struct work_struct *work)
423{
424 int ctrl_param;
425 struct asus_wmi *asus;
426
427 asus = container_of(work, struct asus_wmi, tpd_led_work);
428
429 ctrl_param = asus->tpd_led_wk;
430 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
431}
432
433static void tpd_led_set(struct led_classdev *led_cdev,
434 enum led_brightness value)
435{
436 struct asus_wmi *asus;
437
438 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
439
440 asus->tpd_led_wk = !!value;
441 queue_work(asus->led_workqueue, &asus->tpd_led_work);
442}
443
444static int read_tpd_led_state(struct asus_wmi *asus)
445{
446 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
447}
448
449static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
450{
451 struct asus_wmi *asus;
452
453 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
454
455 return read_tpd_led_state(asus);
456}
457
458static void kbd_led_update(struct work_struct *work)
459{
460 int ctrl_param = 0;
461 struct asus_wmi *asus;
462
463 asus = container_of(work, struct asus_wmi, kbd_led_work);
464
465 /*
466 * bits 0-2: level
467 * bit 7: light on/off
468 */
469 if (asus->kbd_led_wk > 0)
470 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
471
472 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
473}
474
475static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
476{
477 int retval;
478
479 /*
480 * bits 0-2: level
481 * bit 7: light on/off
482 * bit 8-10: environment (0: dark, 1: normal, 2: light)
483 * bit 17: status unknown
484 */
485 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
486 0xFFFF);
487
488 /* Unknown status is considered as off */
489 if (retval == 0x8000)
490 retval = 0;
491
492 if (retval >= 0) {
493 if (level)
494 *level = retval & 0x7F;
495 if (env)
496 *env = (retval >> 8) & 0x7F;
497 retval = 0;
498 }
499
500 return retval;
501}
502
503static void kbd_led_set(struct led_classdev *led_cdev,
504 enum led_brightness value)
505{
506 struct asus_wmi *asus;
507
508 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
509
510 if (value > asus->kbd_led.max_brightness)
511 value = asus->kbd_led.max_brightness;
512 else if (value < 0)
513 value = 0;
514
515 asus->kbd_led_wk = value;
516 queue_work(asus->led_workqueue, &asus->kbd_led_work);
517}
518
519static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
520{
521 struct asus_wmi *asus;
522 int retval, value;
523
524 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
525
526 retval = kbd_led_read(asus, &value, NULL);
527
528 if (retval < 0)
529 return retval;
530
531 return value;
532}
533
534static int wlan_led_unknown_state(struct asus_wmi *asus)
535{
536 u32 result;
537
538 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
539
540 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
541}
542
543static int wlan_led_presence(struct asus_wmi *asus)
544{
545 u32 result;
546
547 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
548
549 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
550}
551
552static void wlan_led_update(struct work_struct *work)
553{
554 int ctrl_param;
555 struct asus_wmi *asus;
556
557 asus = container_of(work, struct asus_wmi, wlan_led_work);
558
559 ctrl_param = asus->wlan_led_wk;
560 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
561}
562
563static void wlan_led_set(struct led_classdev *led_cdev,
564 enum led_brightness value)
565{
566 struct asus_wmi *asus;
567
568 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
569
570 asus->wlan_led_wk = !!value;
571 queue_work(asus->led_workqueue, &asus->wlan_led_work);
572}
573
574static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
575{
576 struct asus_wmi *asus;
577 u32 result;
578
579 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
580 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
581
582 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
583}
584
585static void lightbar_led_update(struct work_struct *work)
586{
587 struct asus_wmi *asus;
588 int ctrl_param;
589
590 asus = container_of(work, struct asus_wmi, lightbar_led_work);
591
592 ctrl_param = asus->lightbar_led_wk;
593 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
594}
595
596static void lightbar_led_set(struct led_classdev *led_cdev,
597 enum led_brightness value)
598{
599 struct asus_wmi *asus;
600
601 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
602
603 asus->lightbar_led_wk = !!value;
604 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
605}
606
607static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
608{
609 struct asus_wmi *asus;
610 u32 result;
611
612 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
613 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
614
615 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
616}
617
618static int lightbar_led_presence(struct asus_wmi *asus)
619{
620 u32 result;
621
622 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
623
624 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
625}
626
627static void asus_wmi_led_exit(struct asus_wmi *asus)
628{
629 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
630 led_classdev_unregister(&asus->kbd_led);
631 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
632 led_classdev_unregister(&asus->tpd_led);
633 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
634 led_classdev_unregister(&asus->wlan_led);
635 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
636 led_classdev_unregister(&asus->lightbar_led);
637 if (asus->led_workqueue)
638 destroy_workqueue(asus->led_workqueue);
639}
640
641static int asus_wmi_led_init(struct asus_wmi *asus)
642{
643 int rv = 0, led_val;
644
645 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
646 if (!asus->led_workqueue)
647 return -ENOMEM;
648
649 if (read_tpd_led_state(asus) >= 0) {
650 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
651
652 asus->tpd_led.name = "asus::touchpad";
653 asus->tpd_led.brightness_set = tpd_led_set;
654 asus->tpd_led.brightness_get = tpd_led_get;
655 asus->tpd_led.max_brightness = 1;
656
657 rv = led_classdev_register(&asus->platform_device->dev,
658 &asus->tpd_led);
659 if (rv)
660 goto error;
661 }
662
663 led_val = kbd_led_read(asus, NULL, NULL);
664 if (led_val >= 0) {
665 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
666
667 asus->kbd_led_wk = led_val;
668 asus->kbd_led.name = "asus::kbd_backlight";
669 asus->kbd_led.brightness_set = kbd_led_set;
670 asus->kbd_led.brightness_get = kbd_led_get;
671 asus->kbd_led.max_brightness = 3;
672
673 rv = led_classdev_register(&asus->platform_device->dev,
674 &asus->kbd_led);
675 if (rv)
676 goto error;
677 }
678
679 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
680 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
681
682 asus->wlan_led.name = "asus::wlan";
683 asus->wlan_led.brightness_set = wlan_led_set;
684 if (!wlan_led_unknown_state(asus))
685 asus->wlan_led.brightness_get = wlan_led_get;
686 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
687 asus->wlan_led.max_brightness = 1;
688 asus->wlan_led.default_trigger = "asus-wlan";
689
690 rv = led_classdev_register(&asus->platform_device->dev,
691 &asus->wlan_led);
692 if (rv)
693 goto error;
694 }
695
696 if (lightbar_led_presence(asus)) {
697 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
698
699 asus->lightbar_led.name = "asus::lightbar";
700 asus->lightbar_led.brightness_set = lightbar_led_set;
701 asus->lightbar_led.brightness_get = lightbar_led_get;
702 asus->lightbar_led.max_brightness = 1;
703
704 rv = led_classdev_register(&asus->platform_device->dev,
705 &asus->lightbar_led);
706 }
707
708error:
709 if (rv)
710 asus_wmi_led_exit(asus);
711
712 return rv;
713}
714
715
716/*
717 * PCI hotplug (for wlan rfkill)
718 */
719static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
720{
721 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
722
723 if (result < 0)
724 return false;
725 return !result;
726}
727
728static void asus_rfkill_hotplug(struct asus_wmi *asus)
729{
730 struct pci_dev *dev;
731 struct pci_bus *bus;
732 bool blocked;
733 bool absent;
734 u32 l;
735
736 mutex_lock(&asus->wmi_lock);
737 blocked = asus_wlan_rfkill_blocked(asus);
738 mutex_unlock(&asus->wmi_lock);
739
740 mutex_lock(&asus->hotplug_lock);
741 pci_lock_rescan_remove();
742
743 if (asus->wlan.rfkill)
744 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
745
746 if (asus->hotplug_slot) {
747 bus = pci_find_bus(0, 1);
748 if (!bus) {
749 pr_warn("Unable to find PCI bus 1?\n");
750 goto out_unlock;
751 }
752
753 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
754 pr_err("Unable to read PCI config space?\n");
755 goto out_unlock;
756 }
757 absent = (l == 0xffffffff);
758
759 if (blocked != absent) {
760 pr_warn("BIOS says wireless lan is %s, "
761 "but the pci device is %s\n",
762 blocked ? "blocked" : "unblocked",
763 absent ? "absent" : "present");
764 pr_warn("skipped wireless hotplug as probably "
765 "inappropriate for this model\n");
766 goto out_unlock;
767 }
768
769 if (!blocked) {
770 dev = pci_get_slot(bus, 0);
771 if (dev) {
772 /* Device already present */
773 pci_dev_put(dev);
774 goto out_unlock;
775 }
776 dev = pci_scan_single_device(bus, 0);
777 if (dev) {
778 pci_bus_assign_resources(bus);
779 pci_bus_add_device(dev);
780 }
781 } else {
782 dev = pci_get_slot(bus, 0);
783 if (dev) {
784 pci_stop_and_remove_bus_device(dev);
785 pci_dev_put(dev);
786 }
787 }
788 }
789
790out_unlock:
791 pci_unlock_rescan_remove();
792 mutex_unlock(&asus->hotplug_lock);
793}
794
795static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
796{
797 struct asus_wmi *asus = data;
798
799 if (event != ACPI_NOTIFY_BUS_CHECK)
800 return;
801
802 /*
803 * We can't call directly asus_rfkill_hotplug because most
804 * of the time WMBC is still being executed and not reetrant.
805 * There is currently no way to tell ACPICA that we want this
806 * method to be serialized, we schedule a asus_rfkill_hotplug
807 * call later, in a safer context.
808 */
809 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
810}
811
812static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
813{
814 acpi_status status;
815 acpi_handle handle;
816
817 status = acpi_get_handle(NULL, node, &handle);
818
819 if (ACPI_SUCCESS(status)) {
820 status = acpi_install_notify_handler(handle,
821 ACPI_SYSTEM_NOTIFY,
822 asus_rfkill_notify, asus);
823 if (ACPI_FAILURE(status))
824 pr_warn("Failed to register notify on %s\n", node);
825 } else
826 return -ENODEV;
827
828 return 0;
829}
830
831static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
832{
833 acpi_status status = AE_OK;
834 acpi_handle handle;
835
836 status = acpi_get_handle(NULL, node, &handle);
837
838 if (ACPI_SUCCESS(status)) {
839 status = acpi_remove_notify_handler(handle,
840 ACPI_SYSTEM_NOTIFY,
841 asus_rfkill_notify);
842 if (ACPI_FAILURE(status))
843 pr_err("Error removing rfkill notify handler %s\n",
844 node);
845 }
846}
847
848static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
849 u8 *value)
850{
851 struct asus_wmi *asus = hotplug_slot->private;
852 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
853
854 if (result < 0)
855 return result;
856
857 *value = !!result;
858 return 0;
859}
860
861static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
862{
863 kfree(hotplug_slot->info);
864 kfree(hotplug_slot);
865}
866
867static struct hotplug_slot_ops asus_hotplug_slot_ops = {
868 .owner = THIS_MODULE,
869 .get_adapter_status = asus_get_adapter_status,
870 .get_power_status = asus_get_adapter_status,
871};
872
873static void asus_hotplug_work(struct work_struct *work)
874{
875 struct asus_wmi *asus;
876
877 asus = container_of(work, struct asus_wmi, hotplug_work);
878 asus_rfkill_hotplug(asus);
879}
880
881static int asus_setup_pci_hotplug(struct asus_wmi *asus)
882{
883 int ret = -ENOMEM;
884 struct pci_bus *bus = pci_find_bus(0, 1);
885
886 if (!bus) {
887 pr_err("Unable to find wifi PCI bus\n");
888 return -ENODEV;
889 }
890
891 asus->hotplug_workqueue =
892 create_singlethread_workqueue("hotplug_workqueue");
893 if (!asus->hotplug_workqueue)
894 goto error_workqueue;
895
896 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
897
898 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
899 if (!asus->hotplug_slot)
900 goto error_slot;
901
902 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
903 GFP_KERNEL);
904 if (!asus->hotplug_slot->info)
905 goto error_info;
906
907 asus->hotplug_slot->private = asus;
908 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
909 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
910 asus_get_adapter_status(asus->hotplug_slot,
911 &asus->hotplug_slot->info->adapter_status);
912
913 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
914 if (ret) {
915 pr_err("Unable to register hotplug slot - %d\n", ret);
916 goto error_register;
917 }
918
919 return 0;
920
921error_register:
922 kfree(asus->hotplug_slot->info);
923error_info:
924 kfree(asus->hotplug_slot);
925 asus->hotplug_slot = NULL;
926error_slot:
927 destroy_workqueue(asus->hotplug_workqueue);
928error_workqueue:
929 return ret;
930}
931
932/*
933 * Rfkill devices
934 */
935static int asus_rfkill_set(void *data, bool blocked)
936{
937 struct asus_rfkill *priv = data;
938 u32 ctrl_param = !blocked;
939 u32 dev_id = priv->dev_id;
940
941 /*
942 * If the user bit is set, BIOS can't set and record the wlan status,
943 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
944 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
945 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
946 * while setting the wlan status through WMI.
947 * This is also the behavior that windows app will do.
948 */
949 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
950 priv->asus->driver->wlan_ctrl_by_user)
951 dev_id = ASUS_WMI_DEVID_WLAN_LED;
952
953 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
954}
955
956static void asus_rfkill_query(struct rfkill *rfkill, void *data)
957{
958 struct asus_rfkill *priv = data;
959 int result;
960
961 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
962
963 if (result < 0)
964 return;
965
966 rfkill_set_sw_state(priv->rfkill, !result);
967}
968
969static int asus_rfkill_wlan_set(void *data, bool blocked)
970{
971 struct asus_rfkill *priv = data;
972 struct asus_wmi *asus = priv->asus;
973 int ret;
974
975 /*
976 * This handler is enabled only if hotplug is enabled.
977 * In this case, the asus_wmi_set_devstate() will
978 * trigger a wmi notification and we need to wait
979 * this call to finish before being able to call
980 * any wmi method
981 */
982 mutex_lock(&asus->wmi_lock);
983 ret = asus_rfkill_set(data, blocked);
984 mutex_unlock(&asus->wmi_lock);
985 return ret;
986}
987
988static const struct rfkill_ops asus_rfkill_wlan_ops = {
989 .set_block = asus_rfkill_wlan_set,
990 .query = asus_rfkill_query,
991};
992
993static const struct rfkill_ops asus_rfkill_ops = {
994 .set_block = asus_rfkill_set,
995 .query = asus_rfkill_query,
996};
997
998static int asus_new_rfkill(struct asus_wmi *asus,
999 struct asus_rfkill *arfkill,
1000 const char *name, enum rfkill_type type, int dev_id)
1001{
1002 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1003 struct rfkill **rfkill = &arfkill->rfkill;
1004
1005 if (result < 0)
1006 return result;
1007
1008 arfkill->dev_id = dev_id;
1009 arfkill->asus = asus;
1010
1011 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1012 asus->driver->quirks->hotplug_wireless)
1013 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1014 &asus_rfkill_wlan_ops, arfkill);
1015 else
1016 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1017 &asus_rfkill_ops, arfkill);
1018
1019 if (!*rfkill)
1020 return -EINVAL;
1021
1022 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1023 (asus->driver->quirks->wapf > 0))
1024 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1025
1026 rfkill_init_sw_state(*rfkill, !result);
1027 result = rfkill_register(*rfkill);
1028 if (result) {
1029 rfkill_destroy(*rfkill);
1030 *rfkill = NULL;
1031 return result;
1032 }
1033 return 0;
1034}
1035
1036static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1037{
1038 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1039 return;
1040
1041 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1042 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1043 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1044 if (asus->wlan.rfkill) {
1045 rfkill_unregister(asus->wlan.rfkill);
1046 rfkill_destroy(asus->wlan.rfkill);
1047 asus->wlan.rfkill = NULL;
1048 }
1049 /*
1050 * Refresh pci hotplug in case the rfkill state was changed after
1051 * asus_unregister_rfkill_notifier()
1052 */
1053 asus_rfkill_hotplug(asus);
1054 if (asus->hotplug_slot)
1055 pci_hp_deregister(asus->hotplug_slot);
1056 if (asus->hotplug_workqueue)
1057 destroy_workqueue(asus->hotplug_workqueue);
1058
1059 if (asus->bluetooth.rfkill) {
1060 rfkill_unregister(asus->bluetooth.rfkill);
1061 rfkill_destroy(asus->bluetooth.rfkill);
1062 asus->bluetooth.rfkill = NULL;
1063 }
1064 if (asus->wimax.rfkill) {
1065 rfkill_unregister(asus->wimax.rfkill);
1066 rfkill_destroy(asus->wimax.rfkill);
1067 asus->wimax.rfkill = NULL;
1068 }
1069 if (asus->wwan3g.rfkill) {
1070 rfkill_unregister(asus->wwan3g.rfkill);
1071 rfkill_destroy(asus->wwan3g.rfkill);
1072 asus->wwan3g.rfkill = NULL;
1073 }
1074 if (asus->gps.rfkill) {
1075 rfkill_unregister(asus->gps.rfkill);
1076 rfkill_destroy(asus->gps.rfkill);
1077 asus->gps.rfkill = NULL;
1078 }
1079 if (asus->uwb.rfkill) {
1080 rfkill_unregister(asus->uwb.rfkill);
1081 rfkill_destroy(asus->uwb.rfkill);
1082 asus->uwb.rfkill = NULL;
1083 }
1084}
1085
1086static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1087{
1088 int result = 0;
1089
1090 mutex_init(&asus->hotplug_lock);
1091 mutex_init(&asus->wmi_lock);
1092
1093 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1094 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1095
1096 if (result && result != -ENODEV)
1097 goto exit;
1098
1099 result = asus_new_rfkill(asus, &asus->bluetooth,
1100 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1101 ASUS_WMI_DEVID_BLUETOOTH);
1102
1103 if (result && result != -ENODEV)
1104 goto exit;
1105
1106 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1107 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1108
1109 if (result && result != -ENODEV)
1110 goto exit;
1111
1112 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1113 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1114
1115 if (result && result != -ENODEV)
1116 goto exit;
1117
1118 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1119 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1120
1121 if (result && result != -ENODEV)
1122 goto exit;
1123
1124 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1125 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1126
1127 if (result && result != -ENODEV)
1128 goto exit;
1129
1130 if (!asus->driver->quirks->hotplug_wireless)
1131 goto exit;
1132
1133 result = asus_setup_pci_hotplug(asus);
1134 /*
1135 * If we get -EBUSY then something else is handling the PCI hotplug -
1136 * don't fail in this case
1137 */
1138 if (result == -EBUSY)
1139 result = 0;
1140
1141 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1142 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1143 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1144 /*
1145 * Refresh pci hotplug in case the rfkill state was changed during
1146 * setup.
1147 */
1148 asus_rfkill_hotplug(asus);
1149
1150exit:
1151 if (result && result != -ENODEV)
1152 asus_wmi_rfkill_exit(asus);
1153
1154 if (result == -ENODEV)
1155 result = 0;
1156
1157 return result;
1158}
1159
1160static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1161{
1162 struct pci_dev *xhci_pdev;
1163 u32 orig_ports_available;
1164 u32 ports_available = asus->driver->quirks->xusb2pr;
1165
1166 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1167 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1168 NULL);
1169
1170 if (!xhci_pdev)
1171 return;
1172
1173 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1174 &orig_ports_available);
1175
1176 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1177 cpu_to_le32(ports_available));
1178
1179 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1180 orig_ports_available, ports_available);
1181}
1182
1183/*
1184 * Some devices dont support or have borcken get_als method
1185 * but still support set method.
1186 */
1187static void asus_wmi_set_als(void)
1188{
1189 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1190}
1191
1192/*
1193 * Hwmon device
1194 */
1195static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1196 int *speed)
1197{
1198 struct fan_args args = {
1199 .agfn.len = sizeof(args),
1200 .agfn.mfun = ASUS_FAN_MFUN,
1201 .agfn.sfun = ASUS_FAN_SFUN_READ,
1202 .fan = fan,
1203 .speed = 0,
1204 };
1205 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1206 int status;
1207
1208 if (fan != 1)
1209 return -EINVAL;
1210
1211 status = asus_wmi_evaluate_method_agfn(input);
1212
1213 if (status || args.agfn.err)
1214 return -ENXIO;
1215
1216 if (speed)
1217 *speed = args.speed;
1218
1219 return 0;
1220}
1221
1222static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1223 int *speed)
1224{
1225 struct fan_args args = {
1226 .agfn.len = sizeof(args),
1227 .agfn.mfun = ASUS_FAN_MFUN,
1228 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1229 .fan = fan,
1230 .speed = speed ? *speed : 0,
1231 };
1232 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1233 int status;
1234
1235 /* 1: for setting 1st fan's speed 0: setting auto mode */
1236 if (fan != 1 && fan != 0)
1237 return -EINVAL;
1238
1239 status = asus_wmi_evaluate_method_agfn(input);
1240
1241 if (status || args.agfn.err)
1242 return -ENXIO;
1243
1244 if (speed && fan == 1)
1245 asus->asus_hwmon_pwm = *speed;
1246
1247 return 0;
1248}
1249
1250/*
1251 * Check if we can read the speed of one fan. If true we assume we can also
1252 * control it.
1253 */
1254static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1255{
1256 int status;
1257 int speed = 0;
1258
1259 *num_fans = 0;
1260
1261 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1262 if (!status)
1263 *num_fans = 1;
1264
1265 return 0;
1266}
1267
1268static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1269{
1270 int status;
1271
1272 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1273 if (status)
1274 return -ENXIO;
1275
1276 asus->asus_hwmon_fan_manual_mode = false;
1277
1278 return 0;
1279}
1280
1281static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
1282{
1283 struct asus_wmi *asus = dev_get_drvdata(dev);
1284 int value;
1285 int ret;
1286
1287 /* no speed readable on manual mode */
1288 if (asus->asus_hwmon_fan_manual_mode)
1289 return -ENXIO;
1290
1291 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1292 if (ret) {
1293 pr_warn("reading fan speed failed: %d\n", ret);
1294 return -ENXIO;
1295 }
1296
1297 return value;
1298}
1299
1300static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1301{
1302 int err;
1303
1304 if (asus->asus_hwmon_pwm >= 0) {
1305 *value = asus->asus_hwmon_pwm;
1306 return;
1307 }
1308
1309 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
1310 if (err < 0)
1311 return;
1312
1313 *value &= 0xFF;
1314
1315 if (*value == 1) /* Low Speed */
1316 *value = 85;
1317 else if (*value == 2)
1318 *value = 170;
1319 else if (*value == 3)
1320 *value = 255;
1321 else if (*value) {
1322 pr_err("Unknown fan speed %#x\n", *value);
1323 *value = -1;
1324 }
1325}
1326
1327static ssize_t pwm1_show(struct device *dev,
1328 struct device_attribute *attr,
1329 char *buf)
1330{
1331 struct asus_wmi *asus = dev_get_drvdata(dev);
1332 int value;
1333
1334 asus_hwmon_pwm_show(asus, 0, &value);
1335
1336 return sprintf(buf, "%d\n", value);
1337}
1338
1339static ssize_t pwm1_store(struct device *dev,
1340 struct device_attribute *attr,
1341 const char *buf, size_t count) {
1342 struct asus_wmi *asus = dev_get_drvdata(dev);
1343 int value;
1344 int state;
1345 int ret;
1346
1347 ret = kstrtouint(buf, 10, &value);
1348
1349 if (ret)
1350 return ret;
1351
1352 value = clamp(value, 0, 255);
1353
1354 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1355 if (state)
1356 pr_warn("Setting fan speed failed: %d\n", state);
1357 else
1358 asus->asus_hwmon_fan_manual_mode = true;
1359
1360 return count;
1361}
1362
1363static ssize_t fan1_input_show(struct device *dev,
1364 struct device_attribute *attr,
1365 char *buf)
1366{
1367 int value = asus_hwmon_fan_rpm_show(dev, 0);
1368
1369 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1370
1371}
1372
1373static ssize_t pwm1_enable_show(struct device *dev,
1374 struct device_attribute *attr,
1375 char *buf)
1376{
1377 struct asus_wmi *asus = dev_get_drvdata(dev);
1378
1379 if (asus->asus_hwmon_fan_manual_mode)
1380 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1381
1382 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1383}
1384
1385static ssize_t pwm1_enable_store(struct device *dev,
1386 struct device_attribute *attr,
1387 const char *buf, size_t count)
1388{
1389 struct asus_wmi *asus = dev_get_drvdata(dev);
1390 int status = 0;
1391 int state;
1392 int ret;
1393
1394 ret = kstrtouint(buf, 10, &state);
1395
1396 if (ret)
1397 return ret;
1398
1399 if (state == ASUS_FAN_CTRL_MANUAL)
1400 asus->asus_hwmon_fan_manual_mode = true;
1401 else
1402 status = asus_hwmon_fan_set_auto(asus);
1403
1404 if (status)
1405 return status;
1406
1407 return count;
1408}
1409
1410static ssize_t fan1_label_show(struct device *dev,
1411 struct device_attribute *attr,
1412 char *buf)
1413{
1414 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1415}
1416
1417static ssize_t asus_hwmon_temp1(struct device *dev,
1418 struct device_attribute *attr,
1419 char *buf)
1420{
1421 struct asus_wmi *asus = dev_get_drvdata(dev);
1422 u32 value;
1423 int err;
1424
1425 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1426
1427 if (err < 0)
1428 return err;
1429
1430 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1431
1432 return sprintf(buf, "%d\n", value);
1433}
1434
1435/* Fan1 */
1436static DEVICE_ATTR_RW(pwm1);
1437static DEVICE_ATTR_RW(pwm1_enable);
1438static DEVICE_ATTR_RO(fan1_input);
1439static DEVICE_ATTR_RO(fan1_label);
1440
1441/* Temperature */
1442static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1443
1444static struct attribute *hwmon_attributes[] = {
1445 &dev_attr_pwm1.attr,
1446 &dev_attr_pwm1_enable.attr,
1447 &dev_attr_fan1_input.attr,
1448 &dev_attr_fan1_label.attr,
1449
1450 &dev_attr_temp1_input.attr,
1451 NULL
1452};
1453
1454static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1455 struct attribute *attr, int idx)
1456{
1457 struct device *dev = container_of(kobj, struct device, kobj);
1458 struct platform_device *pdev = to_platform_device(dev->parent);
1459 struct asus_wmi *asus = platform_get_drvdata(pdev);
1460 int dev_id = -1;
1461 int fan_attr = -1;
1462 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1463 bool ok = true;
1464
1465 if (attr == &dev_attr_pwm1.attr)
1466 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1467 else if (attr == &dev_attr_temp1_input.attr)
1468 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1469
1470
1471 if (attr == &dev_attr_fan1_input.attr
1472 || attr == &dev_attr_fan1_label.attr
1473 || attr == &dev_attr_pwm1.attr
1474 || attr == &dev_attr_pwm1_enable.attr) {
1475 fan_attr = 1;
1476 }
1477
1478 if (dev_id != -1) {
1479 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1480
1481 if (err < 0 && fan_attr == -1)
1482 return 0; /* can't return negative here */
1483 }
1484
1485 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1486 /*
1487 * We need to find a better way, probably using sfun,
1488 * bits or spec ...
1489 * Currently we disable it if:
1490 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1491 * - reverved bits are non-zero
1492 * - sfun and presence bit are not set
1493 */
1494 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1495 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1496 ok = false;
1497 else
1498 ok = fan_attr <= asus->asus_hwmon_num_fans;
1499 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1500 /* If value is zero, something is clearly wrong */
1501 if (!value)
1502 ok = false;
1503 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1504 ok = true;
1505 } else {
1506 ok = false;
1507 }
1508
1509 return ok ? attr->mode : 0;
1510}
1511
1512static const struct attribute_group hwmon_attribute_group = {
1513 .is_visible = asus_hwmon_sysfs_is_visible,
1514 .attrs = hwmon_attributes
1515};
1516__ATTRIBUTE_GROUPS(hwmon_attribute);
1517
1518static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1519{
1520 struct device *hwmon;
1521
1522 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1523 "asus", asus,
1524 hwmon_attribute_groups);
1525 if (IS_ERR(hwmon)) {
1526 pr_err("Could not register asus hwmon device\n");
1527 return PTR_ERR(hwmon);
1528 }
1529 return 0;
1530}
1531
1532/*
1533 * Backlight
1534 */
1535static int read_backlight_power(struct asus_wmi *asus)
1536{
1537 int ret;
1538 if (asus->driver->quirks->store_backlight_power)
1539 ret = !asus->driver->panel_power;
1540 else
1541 ret = asus_wmi_get_devstate_simple(asus,
1542 ASUS_WMI_DEVID_BACKLIGHT);
1543
1544 if (ret < 0)
1545 return ret;
1546
1547 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1548}
1549
1550static int read_brightness_max(struct asus_wmi *asus)
1551{
1552 u32 retval;
1553 int err;
1554
1555 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1556
1557 if (err < 0)
1558 return err;
1559
1560 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1561 retval >>= 8;
1562
1563 if (!retval)
1564 return -ENODEV;
1565
1566 return retval;
1567}
1568
1569static int read_brightness(struct backlight_device *bd)
1570{
1571 struct asus_wmi *asus = bl_get_data(bd);
1572 u32 retval;
1573 int err;
1574
1575 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1576
1577 if (err < 0)
1578 return err;
1579
1580 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1581}
1582
1583static u32 get_scalar_command(struct backlight_device *bd)
1584{
1585 struct asus_wmi *asus = bl_get_data(bd);
1586 u32 ctrl_param = 0;
1587
1588 if ((asus->driver->brightness < bd->props.brightness) ||
1589 bd->props.brightness == bd->props.max_brightness)
1590 ctrl_param = 0x00008001;
1591 else if ((asus->driver->brightness > bd->props.brightness) ||
1592 bd->props.brightness == 0)
1593 ctrl_param = 0x00008000;
1594
1595 asus->driver->brightness = bd->props.brightness;
1596
1597 return ctrl_param;
1598}
1599
1600static int update_bl_status(struct backlight_device *bd)
1601{
1602 struct asus_wmi *asus = bl_get_data(bd);
1603 u32 ctrl_param;
1604 int power, err = 0;
1605
1606 power = read_backlight_power(asus);
1607 if (power != -ENODEV && bd->props.power != power) {
1608 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1609 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1610 ctrl_param, NULL);
1611 if (asus->driver->quirks->store_backlight_power)
1612 asus->driver->panel_power = bd->props.power;
1613
1614 /* When using scalar brightness, updating the brightness
1615 * will mess with the backlight power */
1616 if (asus->driver->quirks->scalar_panel_brightness)
1617 return err;
1618 }
1619
1620 if (asus->driver->quirks->scalar_panel_brightness)
1621 ctrl_param = get_scalar_command(bd);
1622 else
1623 ctrl_param = bd->props.brightness;
1624
1625 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1626 ctrl_param, NULL);
1627
1628 return err;
1629}
1630
1631static const struct backlight_ops asus_wmi_bl_ops = {
1632 .get_brightness = read_brightness,
1633 .update_status = update_bl_status,
1634};
1635
1636static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1637{
1638 struct backlight_device *bd = asus->backlight_device;
1639 int old = bd->props.brightness;
1640 int new = old;
1641
1642 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1643 new = code - NOTIFY_BRNUP_MIN + 1;
1644 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1645 new = code - NOTIFY_BRNDOWN_MIN;
1646
1647 bd->props.brightness = new;
1648 backlight_update_status(bd);
1649 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1650
1651 return old;
1652}
1653
1654static int asus_wmi_backlight_init(struct asus_wmi *asus)
1655{
1656 struct backlight_device *bd;
1657 struct backlight_properties props;
1658 int max;
1659 int power;
1660
1661 max = read_brightness_max(asus);
1662 if (max < 0)
1663 return max;
1664
1665 power = read_backlight_power(asus);
1666
1667 if (power == -ENODEV)
1668 power = FB_BLANK_UNBLANK;
1669 else if (power < 0)
1670 return power;
1671
1672 memset(&props, 0, sizeof(struct backlight_properties));
1673 props.type = BACKLIGHT_PLATFORM;
1674 props.max_brightness = max;
1675 bd = backlight_device_register(asus->driver->name,
1676 &asus->platform_device->dev, asus,
1677 &asus_wmi_bl_ops, &props);
1678 if (IS_ERR(bd)) {
1679 pr_err("Could not register backlight device\n");
1680 return PTR_ERR(bd);
1681 }
1682
1683 asus->backlight_device = bd;
1684
1685 if (asus->driver->quirks->store_backlight_power)
1686 asus->driver->panel_power = power;
1687
1688 bd->props.brightness = read_brightness(bd);
1689 bd->props.power = power;
1690 backlight_update_status(bd);
1691
1692 asus->driver->brightness = bd->props.brightness;
1693
1694 return 0;
1695}
1696
1697static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1698{
1699 backlight_device_unregister(asus->backlight_device);
1700
1701 asus->backlight_device = NULL;
1702}
1703
1704static int is_display_toggle(int code)
1705{
1706 /* display toggle keys */
1707 if ((code >= 0x61 && code <= 0x67) ||
1708 (code >= 0x8c && code <= 0x93) ||
1709 (code >= 0xa0 && code <= 0xa7) ||
1710 (code >= 0xd0 && code <= 0xd5))
1711 return 1;
1712
1713 return 0;
1714}
1715
1716static void asus_wmi_notify(u32 value, void *context)
1717{
1718 struct asus_wmi *asus = context;
1719 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1720 union acpi_object *obj;
1721 acpi_status status;
1722 int code;
1723 int orig_code;
1724 unsigned int key_value = 1;
1725 bool autorelease = 1;
1726
1727 status = wmi_get_event_data(value, &response);
1728 if (status != AE_OK) {
1729 pr_err("bad event status 0x%x\n", status);
1730 return;
1731 }
1732
1733 obj = (union acpi_object *)response.pointer;
1734
1735 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1736 goto exit;
1737
1738 code = obj->integer.value;
1739 orig_code = code;
1740
1741 if (asus->driver->key_filter) {
1742 asus->driver->key_filter(asus->driver, &code, &key_value,
1743 &autorelease);
1744 if (code == ASUS_WMI_KEY_IGNORE)
1745 goto exit;
1746 }
1747
1748 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1749 code = ASUS_WMI_BRN_UP;
1750 else if (code >= NOTIFY_BRNDOWN_MIN &&
1751 code <= NOTIFY_BRNDOWN_MAX)
1752 code = ASUS_WMI_BRN_DOWN;
1753
1754 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1755 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1756 asus_wmi_backlight_notify(asus, orig_code);
1757 goto exit;
1758 }
1759 }
1760
1761 if (is_display_toggle(code) &&
1762 asus->driver->quirks->no_display_toggle)
1763 goto exit;
1764
1765 if (!sparse_keymap_report_event(asus->inputdev, code,
1766 key_value, autorelease))
1767 pr_info("Unknown key %x pressed\n", code);
1768
1769exit:
1770 kfree(obj);
1771}
1772
1773/*
1774 * Sys helpers
1775 */
1776static int parse_arg(const char *buf, unsigned long count, int *val)
1777{
1778 if (!count)
1779 return 0;
1780 if (sscanf(buf, "%i", val) != 1)
1781 return -EINVAL;
1782 return count;
1783}
1784
1785static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1786 const char *buf, size_t count)
1787{
1788 u32 retval;
1789 int rv, err, value;
1790
1791 value = asus_wmi_get_devstate_simple(asus, devid);
1792 if (value < 0)
1793 return value;
1794
1795 rv = parse_arg(buf, count, &value);
1796 err = asus_wmi_set_devstate(devid, value, &retval);
1797
1798 if (err < 0)
1799 return err;
1800
1801 return rv;
1802}
1803
1804static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1805{
1806 int value = asus_wmi_get_devstate_simple(asus, devid);
1807
1808 if (value < 0)
1809 return value;
1810
1811 return sprintf(buf, "%d\n", value);
1812}
1813
1814#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1815 static ssize_t show_##_name(struct device *dev, \
1816 struct device_attribute *attr, \
1817 char *buf) \
1818 { \
1819 struct asus_wmi *asus = dev_get_drvdata(dev); \
1820 \
1821 return show_sys_wmi(asus, _cm, buf); \
1822 } \
1823 static ssize_t store_##_name(struct device *dev, \
1824 struct device_attribute *attr, \
1825 const char *buf, size_t count) \
1826 { \
1827 struct asus_wmi *asus = dev_get_drvdata(dev); \
1828 \
1829 return store_sys_wmi(asus, _cm, buf, count); \
1830 } \
1831 static struct device_attribute dev_attr_##_name = { \
1832 .attr = { \
1833 .name = __stringify(_name), \
1834 .mode = _mode }, \
1835 .show = show_##_name, \
1836 .store = store_##_name, \
1837 }
1838
1839ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1840ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1841ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1842ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1843ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
1844
1845static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
1846 const char *buf, size_t count)
1847{
1848 int value, rv;
1849
1850 if (!count || sscanf(buf, "%i", &value) != 1)
1851 return -EINVAL;
1852 if (value < 0 || value > 2)
1853 return -EINVAL;
1854
1855 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1856 if (rv < 0)
1857 return rv;
1858
1859 return count;
1860}
1861
1862static DEVICE_ATTR_WO(cpufv);
1863
1864static struct attribute *platform_attributes[] = {
1865 &dev_attr_cpufv.attr,
1866 &dev_attr_camera.attr,
1867 &dev_attr_cardr.attr,
1868 &dev_attr_touchpad.attr,
1869 &dev_attr_lid_resume.attr,
1870 &dev_attr_als_enable.attr,
1871 NULL
1872};
1873
1874static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1875 struct attribute *attr, int idx)
1876{
1877 struct device *dev = container_of(kobj, struct device, kobj);
1878 struct platform_device *pdev = to_platform_device(dev);
1879 struct asus_wmi *asus = platform_get_drvdata(pdev);
1880 bool ok = true;
1881 int devid = -1;
1882
1883 if (attr == &dev_attr_camera.attr)
1884 devid = ASUS_WMI_DEVID_CAMERA;
1885 else if (attr == &dev_attr_cardr.attr)
1886 devid = ASUS_WMI_DEVID_CARDREADER;
1887 else if (attr == &dev_attr_touchpad.attr)
1888 devid = ASUS_WMI_DEVID_TOUCHPAD;
1889 else if (attr == &dev_attr_lid_resume.attr)
1890 devid = ASUS_WMI_DEVID_LID_RESUME;
1891 else if (attr == &dev_attr_als_enable.attr)
1892 devid = ASUS_WMI_DEVID_ALS_ENABLE;
1893
1894 if (devid != -1)
1895 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1896
1897 return ok ? attr->mode : 0;
1898}
1899
1900static const struct attribute_group platform_attribute_group = {
1901 .is_visible = asus_sysfs_is_visible,
1902 .attrs = platform_attributes
1903};
1904
1905static void asus_wmi_sysfs_exit(struct platform_device *device)
1906{
1907 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1908}
1909
1910static int asus_wmi_sysfs_init(struct platform_device *device)
1911{
1912 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1913}
1914
1915/*
1916 * Platform device
1917 */
1918static int asus_wmi_platform_init(struct asus_wmi *asus)
1919{
1920 int rv;
1921
1922 /* INIT enable hotkeys on some models */
1923 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1924 pr_info("Initialization: %#x\n", rv);
1925
1926 /* We don't know yet what to do with this version... */
1927 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1928 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
1929 asus->spec = rv;
1930 }
1931
1932 /*
1933 * The SFUN method probably allows the original driver to get the list
1934 * of features supported by a given model. For now, 0x0100 or 0x0800
1935 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1936 * The significance of others is yet to be found.
1937 */
1938 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1939 pr_info("SFUN value: %#x\n", rv);
1940 asus->sfun = rv;
1941 }
1942
1943 /*
1944 * Eee PC and Notebooks seems to have different method_id for DSTS,
1945 * but it may also be related to the BIOS's SPEC.
1946 * Note, on most Eeepc, there is no way to check if a method exist
1947 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1948 * but once again, SPEC may probably be used for that kind of things.
1949 */
1950 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1951 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1952 else
1953 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1954
1955 /* CWAP allow to define the behavior of the Fn+F2 key,
1956 * this method doesn't seems to be present on Eee PCs */
1957 if (asus->driver->quirks->wapf >= 0)
1958 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1959 asus->driver->quirks->wapf, NULL);
1960
1961 return asus_wmi_sysfs_init(asus->platform_device);
1962}
1963
1964static void asus_wmi_platform_exit(struct asus_wmi *asus)
1965{
1966 asus_wmi_sysfs_exit(asus->platform_device);
1967}
1968
1969/*
1970 * debugfs
1971 */
1972struct asus_wmi_debugfs_node {
1973 struct asus_wmi *asus;
1974 char *name;
1975 int (*show) (struct seq_file *m, void *data);
1976};
1977
1978static int show_dsts(struct seq_file *m, void *data)
1979{
1980 struct asus_wmi *asus = m->private;
1981 int err;
1982 u32 retval = -1;
1983
1984 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1985
1986 if (err < 0)
1987 return err;
1988
1989 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1990
1991 return 0;
1992}
1993
1994static int show_devs(struct seq_file *m, void *data)
1995{
1996 struct asus_wmi *asus = m->private;
1997 int err;
1998 u32 retval = -1;
1999
2000 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2001 &retval);
2002
2003 if (err < 0)
2004 return err;
2005
2006 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2007 asus->debug.ctrl_param, retval);
2008
2009 return 0;
2010}
2011
2012static int show_call(struct seq_file *m, void *data)
2013{
2014 struct asus_wmi *asus = m->private;
2015 struct bios_args args = {
2016 .arg0 = asus->debug.dev_id,
2017 .arg1 = asus->debug.ctrl_param,
2018 };
2019 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2020 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2021 union acpi_object *obj;
2022 acpi_status status;
2023
2024 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2025 0, asus->debug.method_id,
2026 &input, &output);
2027
2028 if (ACPI_FAILURE(status))
2029 return -EIO;
2030
2031 obj = (union acpi_object *)output.pointer;
2032 if (obj && obj->type == ACPI_TYPE_INTEGER)
2033 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2034 asus->debug.dev_id, asus->debug.ctrl_param,
2035 (u32) obj->integer.value);
2036 else
2037 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2038 asus->debug.dev_id, asus->debug.ctrl_param,
2039 obj ? obj->type : -1);
2040
2041 kfree(obj);
2042
2043 return 0;
2044}
2045
2046static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2047 {NULL, "devs", show_devs},
2048 {NULL, "dsts", show_dsts},
2049 {NULL, "call", show_call},
2050};
2051
2052static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2053{
2054 struct asus_wmi_debugfs_node *node = inode->i_private;
2055
2056 return single_open(file, node->show, node->asus);
2057}
2058
2059static const struct file_operations asus_wmi_debugfs_io_ops = {
2060 .owner = THIS_MODULE,
2061 .open = asus_wmi_debugfs_open,
2062 .read = seq_read,
2063 .llseek = seq_lseek,
2064 .release = single_release,
2065};
2066
2067static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2068{
2069 debugfs_remove_recursive(asus->debug.root);
2070}
2071
2072static int asus_wmi_debugfs_init(struct asus_wmi *asus)
2073{
2074 struct dentry *dent;
2075 int i;
2076
2077 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2078 if (!asus->debug.root) {
2079 pr_err("failed to create debugfs directory\n");
2080 goto error_debugfs;
2081 }
2082
2083 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
2084 asus->debug.root, &asus->debug.method_id);
2085 if (!dent)
2086 goto error_debugfs;
2087
2088 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
2089 asus->debug.root, &asus->debug.dev_id);
2090 if (!dent)
2091 goto error_debugfs;
2092
2093 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
2094 asus->debug.root, &asus->debug.ctrl_param);
2095 if (!dent)
2096 goto error_debugfs;
2097
2098 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2099 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2100
2101 node->asus = asus;
2102 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2103 asus->debug.root, node,
2104 &asus_wmi_debugfs_io_ops);
2105 if (!dent) {
2106 pr_err("failed to create debug file: %s\n", node->name);
2107 goto error_debugfs;
2108 }
2109 }
2110
2111 return 0;
2112
2113error_debugfs:
2114 asus_wmi_debugfs_exit(asus);
2115 return -ENOMEM;
2116}
2117
2118static int asus_wmi_fan_init(struct asus_wmi *asus)
2119{
2120 int status;
2121
2122 asus->asus_hwmon_pwm = -1;
2123 asus->asus_hwmon_num_fans = -1;
2124 asus->asus_hwmon_fan_manual_mode = false;
2125
2126 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2127 if (status) {
2128 asus->asus_hwmon_num_fans = 0;
2129 pr_warn("Could not determine number of fans: %d\n", status);
2130 return -ENXIO;
2131 }
2132
2133 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2134 return 0;
2135}
2136
2137/*
2138 * WMI Driver
2139 */
2140static int asus_wmi_add(struct platform_device *pdev)
2141{
2142 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2143 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2144 struct asus_wmi *asus;
2145 const char *chassis_type;
2146 acpi_status status;
2147 int err;
2148 u32 result;
2149
2150 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2151 if (!asus)
2152 return -ENOMEM;
2153
2154 asus->driver = wdrv;
2155 asus->platform_device = pdev;
2156 wdrv->platform_device = pdev;
2157 platform_set_drvdata(asus->platform_device, asus);
2158
2159 if (wdrv->detect_quirks)
2160 wdrv->detect_quirks(asus->driver);
2161
2162 err = asus_wmi_platform_init(asus);
2163 if (err)
2164 goto fail_platform;
2165
2166 err = asus_wmi_input_init(asus);
2167 if (err)
2168 goto fail_input;
2169
2170 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2171 asus_hwmon_fan_set_auto(asus);
2172
2173 err = asus_wmi_hwmon_init(asus);
2174 if (err)
2175 goto fail_hwmon;
2176
2177 err = asus_wmi_led_init(asus);
2178 if (err)
2179 goto fail_leds;
2180
2181 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2182 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2183 asus->driver->wlan_ctrl_by_user = 1;
2184
2185 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2186 err = asus_wmi_rfkill_init(asus);
2187 if (err)
2188 goto fail_rfkill;
2189 }
2190
2191 if (asus->driver->quirks->wmi_force_als_set)
2192 asus_wmi_set_als();
2193
2194 /* Some Asus desktop boards export an acpi-video backlight interface,
2195 stop this from showing up */
2196 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2197 if (chassis_type && !strcmp(chassis_type, "3"))
2198 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2199
2200 if (asus->driver->quirks->wmi_backlight_power)
2201 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2202
2203 if (asus->driver->quirks->wmi_backlight_native)
2204 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2205
2206 if (asus->driver->quirks->xusb2pr)
2207 asus_wmi_set_xusb2pr(asus);
2208
2209 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2210 err = asus_wmi_backlight_init(asus);
2211 if (err && err != -ENODEV)
2212 goto fail_backlight;
2213 }
2214
2215 status = wmi_install_notify_handler(asus->driver->event_guid,
2216 asus_wmi_notify, asus);
2217 if (ACPI_FAILURE(status)) {
2218 pr_err("Unable to register notify handler - %d\n", status);
2219 err = -ENODEV;
2220 goto fail_wmi_handler;
2221 }
2222
2223 err = asus_wmi_debugfs_init(asus);
2224 if (err)
2225 goto fail_debugfs;
2226
2227 return 0;
2228
2229fail_debugfs:
2230 wmi_remove_notify_handler(asus->driver->event_guid);
2231fail_wmi_handler:
2232 asus_wmi_backlight_exit(asus);
2233fail_backlight:
2234 asus_wmi_rfkill_exit(asus);
2235fail_rfkill:
2236 asus_wmi_led_exit(asus);
2237fail_leds:
2238fail_hwmon:
2239 asus_wmi_input_exit(asus);
2240fail_input:
2241 asus_wmi_platform_exit(asus);
2242fail_platform:
2243 kfree(asus);
2244 return err;
2245}
2246
2247static int asus_wmi_remove(struct platform_device *device)
2248{
2249 struct asus_wmi *asus;
2250
2251 asus = platform_get_drvdata(device);
2252 wmi_remove_notify_handler(asus->driver->event_guid);
2253 asus_wmi_backlight_exit(asus);
2254 asus_wmi_input_exit(asus);
2255 asus_wmi_led_exit(asus);
2256 asus_wmi_rfkill_exit(asus);
2257 asus_wmi_debugfs_exit(asus);
2258 asus_wmi_platform_exit(asus);
2259 asus_hwmon_fan_set_auto(asus);
2260
2261 kfree(asus);
2262 return 0;
2263}
2264
2265/*
2266 * Platform driver - hibernate/resume callbacks
2267 */
2268static int asus_hotk_thaw(struct device *device)
2269{
2270 struct asus_wmi *asus = dev_get_drvdata(device);
2271
2272 if (asus->wlan.rfkill) {
2273 bool wlan;
2274
2275 /*
2276 * Work around bios bug - acpi _PTS turns off the wireless led
2277 * during suspend. Normally it restores it on resume, but
2278 * we should kick it ourselves in case hibernation is aborted.
2279 */
2280 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2281 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2282 }
2283
2284 return 0;
2285}
2286
2287static int asus_hotk_resume(struct device *device)
2288{
2289 struct asus_wmi *asus = dev_get_drvdata(device);
2290
2291 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2292 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2293
2294 return 0;
2295}
2296
2297static int asus_hotk_restore(struct device *device)
2298{
2299 struct asus_wmi *asus = dev_get_drvdata(device);
2300 int bl;
2301
2302 /* Refresh both wlan rfkill state and pci hotplug */
2303 if (asus->wlan.rfkill)
2304 asus_rfkill_hotplug(asus);
2305
2306 if (asus->bluetooth.rfkill) {
2307 bl = !asus_wmi_get_devstate_simple(asus,
2308 ASUS_WMI_DEVID_BLUETOOTH);
2309 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2310 }
2311 if (asus->wimax.rfkill) {
2312 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2313 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2314 }
2315 if (asus->wwan3g.rfkill) {
2316 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2317 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2318 }
2319 if (asus->gps.rfkill) {
2320 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2321 rfkill_set_sw_state(asus->gps.rfkill, bl);
2322 }
2323 if (asus->uwb.rfkill) {
2324 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2325 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2326 }
2327 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2328 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2329
2330 return 0;
2331}
2332
2333static const struct dev_pm_ops asus_pm_ops = {
2334 .thaw = asus_hotk_thaw,
2335 .restore = asus_hotk_restore,
2336 .resume = asus_hotk_resume,
2337};
2338
2339static int asus_wmi_probe(struct platform_device *pdev)
2340{
2341 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2342 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2343 int ret;
2344
2345 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2346 pr_warn("Management GUID not found\n");
2347 return -ENODEV;
2348 }
2349
2350 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2351 pr_warn("Event GUID not found\n");
2352 return -ENODEV;
2353 }
2354
2355 if (wdrv->probe) {
2356 ret = wdrv->probe(pdev);
2357 if (ret)
2358 return ret;
2359 }
2360
2361 return asus_wmi_add(pdev);
2362}
2363
2364static bool used;
2365
2366int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2367{
2368 struct platform_driver *platform_driver;
2369 struct platform_device *platform_device;
2370
2371 if (used)
2372 return -EBUSY;
2373
2374 platform_driver = &driver->platform_driver;
2375 platform_driver->remove = asus_wmi_remove;
2376 platform_driver->driver.owner = driver->owner;
2377 platform_driver->driver.name = driver->name;
2378 platform_driver->driver.pm = &asus_pm_ops;
2379
2380 platform_device = platform_create_bundle(platform_driver,
2381 asus_wmi_probe,
2382 NULL, 0, NULL, 0);
2383 if (IS_ERR(platform_device))
2384 return PTR_ERR(platform_device);
2385
2386 used = true;
2387 return 0;
2388}
2389EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2390
2391void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2392{
2393 platform_device_unregister(driver->platform_device);
2394 platform_driver_unregister(&driver->platform_driver);
2395 used = false;
2396}
2397EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2398
2399static int __init asus_wmi_init(void)
2400{
2401 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2402 pr_info("Asus Management GUID not found\n");
2403 return -ENODEV;
2404 }
2405
2406 pr_info("ASUS WMI generic driver loaded\n");
2407 return 0;
2408}
2409
2410static void __exit asus_wmi_exit(void)
2411{
2412 pr_info("ASUS WMI generic driver unloaded\n");
2413}
2414
2415module_init(asus_wmi_init);
2416module_exit(asus_wmi_exit);