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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 & 0x80 ? retval & 0x7F : 0;
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 (asus->tpd_led.dev)
457 led_classdev_unregister(&asus->tpd_led);
458 if (asus->led_workqueue)
459 destroy_workqueue(asus->led_workqueue);
460}
461
462static int asus_wmi_led_init(struct asus_wmi *asus)
463{
464 int rv = 0;
465
466 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
467 if (!asus->led_workqueue)
468 return -ENOMEM;
469
470 if (read_tpd_led_state(asus) >= 0) {
471 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
472
473 asus->tpd_led.name = "asus::touchpad";
474 asus->tpd_led.brightness_set = tpd_led_set;
475 asus->tpd_led.brightness_get = tpd_led_get;
476 asus->tpd_led.max_brightness = 1;
477
478 rv = led_classdev_register(&asus->platform_device->dev,
479 &asus->tpd_led);
480 if (rv)
481 goto error;
482 }
483
484 if (kbd_led_read(asus, NULL, NULL) >= 0) {
485 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
486
487 asus->kbd_led.name = "asus::kbd_backlight";
488 asus->kbd_led.brightness_set = kbd_led_set;
489 asus->kbd_led.brightness_get = kbd_led_get;
490 asus->kbd_led.max_brightness = 3;
491
492 rv = led_classdev_register(&asus->platform_device->dev,
493 &asus->kbd_led);
494 }
495
496error:
497 if (rv)
498 asus_wmi_led_exit(asus);
499
500 return rv;
501}
502
503
504/*
505 * PCI hotplug (for wlan rfkill)
506 */
507static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
508{
509 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
510
511 if (result < 0)
512 return false;
513 return !result;
514}
515
516static void asus_rfkill_hotplug(struct asus_wmi *asus)
517{
518 struct pci_dev *dev;
519 struct pci_bus *bus;
520 bool blocked;
521 bool absent;
522 u32 l;
523
524 mutex_lock(&asus->wmi_lock);
525 blocked = asus_wlan_rfkill_blocked(asus);
526 mutex_unlock(&asus->wmi_lock);
527
528 mutex_lock(&asus->hotplug_lock);
529
530 if (asus->wlan.rfkill)
531 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
532
533 if (asus->hotplug_slot) {
534 bus = pci_find_bus(0, 1);
535 if (!bus) {
536 pr_warn("Unable to find PCI bus 1?\n");
537 goto out_unlock;
538 }
539
540 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
541 pr_err("Unable to read PCI config space?\n");
542 goto out_unlock;
543 }
544 absent = (l == 0xffffffff);
545
546 if (blocked != absent) {
547 pr_warn("BIOS says wireless lan is %s, "
548 "but the pci device is %s\n",
549 blocked ? "blocked" : "unblocked",
550 absent ? "absent" : "present");
551 pr_warn("skipped wireless hotplug as probably "
552 "inappropriate for this model\n");
553 goto out_unlock;
554 }
555
556 if (!blocked) {
557 dev = pci_get_slot(bus, 0);
558 if (dev) {
559 /* Device already present */
560 pci_dev_put(dev);
561 goto out_unlock;
562 }
563 dev = pci_scan_single_device(bus, 0);
564 if (dev) {
565 pci_bus_assign_resources(bus);
566 if (pci_bus_add_device(dev))
567 pr_err("Unable to hotplug wifi\n");
568 }
569 } else {
570 dev = pci_get_slot(bus, 0);
571 if (dev) {
572 pci_remove_bus_device(dev);
573 pci_dev_put(dev);
574 }
575 }
576 }
577
578out_unlock:
579 mutex_unlock(&asus->hotplug_lock);
580}
581
582static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
583{
584 struct asus_wmi *asus = data;
585
586 if (event != ACPI_NOTIFY_BUS_CHECK)
587 return;
588
589 /*
590 * We can't call directly asus_rfkill_hotplug because most
591 * of the time WMBC is still being executed and not reetrant.
592 * There is currently no way to tell ACPICA that we want this
593 * method to be serialized, we schedule a asus_rfkill_hotplug
594 * call later, in a safer context.
595 */
596 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
597}
598
599static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
600{
601 acpi_status status;
602 acpi_handle handle;
603
604 status = acpi_get_handle(NULL, node, &handle);
605
606 if (ACPI_SUCCESS(status)) {
607 status = acpi_install_notify_handler(handle,
608 ACPI_SYSTEM_NOTIFY,
609 asus_rfkill_notify, asus);
610 if (ACPI_FAILURE(status))
611 pr_warn("Failed to register notify on %s\n", node);
612 } else
613 return -ENODEV;
614
615 return 0;
616}
617
618static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
619{
620 acpi_status status = AE_OK;
621 acpi_handle handle;
622
623 status = acpi_get_handle(NULL, node, &handle);
624
625 if (ACPI_SUCCESS(status)) {
626 status = acpi_remove_notify_handler(handle,
627 ACPI_SYSTEM_NOTIFY,
628 asus_rfkill_notify);
629 if (ACPI_FAILURE(status))
630 pr_err("Error removing rfkill notify handler %s\n",
631 node);
632 }
633}
634
635static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
636 u8 *value)
637{
638 struct asus_wmi *asus = hotplug_slot->private;
639 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
640
641 if (result < 0)
642 return result;
643
644 *value = !!result;
645 return 0;
646}
647
648static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
649{
650 kfree(hotplug_slot->info);
651 kfree(hotplug_slot);
652}
653
654static struct hotplug_slot_ops asus_hotplug_slot_ops = {
655 .owner = THIS_MODULE,
656 .get_adapter_status = asus_get_adapter_status,
657 .get_power_status = asus_get_adapter_status,
658};
659
660static void asus_hotplug_work(struct work_struct *work)
661{
662 struct asus_wmi *asus;
663
664 asus = container_of(work, struct asus_wmi, hotplug_work);
665 asus_rfkill_hotplug(asus);
666}
667
668static int asus_setup_pci_hotplug(struct asus_wmi *asus)
669{
670 int ret = -ENOMEM;
671 struct pci_bus *bus = pci_find_bus(0, 1);
672
673 if (!bus) {
674 pr_err("Unable to find wifi PCI bus\n");
675 return -ENODEV;
676 }
677
678 asus->hotplug_workqueue =
679 create_singlethread_workqueue("hotplug_workqueue");
680 if (!asus->hotplug_workqueue)
681 goto error_workqueue;
682
683 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
684
685 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
686 if (!asus->hotplug_slot)
687 goto error_slot;
688
689 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
690 GFP_KERNEL);
691 if (!asus->hotplug_slot->info)
692 goto error_info;
693
694 asus->hotplug_slot->private = asus;
695 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
696 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
697 asus_get_adapter_status(asus->hotplug_slot,
698 &asus->hotplug_slot->info->adapter_status);
699
700 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
701 if (ret) {
702 pr_err("Unable to register hotplug slot - %d\n", ret);
703 goto error_register;
704 }
705
706 return 0;
707
708error_register:
709 kfree(asus->hotplug_slot->info);
710error_info:
711 kfree(asus->hotplug_slot);
712 asus->hotplug_slot = NULL;
713error_slot:
714 destroy_workqueue(asus->hotplug_workqueue);
715error_workqueue:
716 return ret;
717}
718
719/*
720 * Rfkill devices
721 */
722static int asus_rfkill_set(void *data, bool blocked)
723{
724 struct asus_rfkill *priv = data;
725 u32 ctrl_param = !blocked;
726
727 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
728}
729
730static void asus_rfkill_query(struct rfkill *rfkill, void *data)
731{
732 struct asus_rfkill *priv = data;
733 int result;
734
735 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
736
737 if (result < 0)
738 return;
739
740 rfkill_set_sw_state(priv->rfkill, !result);
741}
742
743static int asus_rfkill_wlan_set(void *data, bool blocked)
744{
745 struct asus_rfkill *priv = data;
746 struct asus_wmi *asus = priv->asus;
747 int ret;
748
749 /*
750 * This handler is enabled only if hotplug is enabled.
751 * In this case, the asus_wmi_set_devstate() will
752 * trigger a wmi notification and we need to wait
753 * this call to finish before being able to call
754 * any wmi method
755 */
756 mutex_lock(&asus->wmi_lock);
757 ret = asus_rfkill_set(data, blocked);
758 mutex_unlock(&asus->wmi_lock);
759 return ret;
760}
761
762static const struct rfkill_ops asus_rfkill_wlan_ops = {
763 .set_block = asus_rfkill_wlan_set,
764 .query = asus_rfkill_query,
765};
766
767static const struct rfkill_ops asus_rfkill_ops = {
768 .set_block = asus_rfkill_set,
769 .query = asus_rfkill_query,
770};
771
772static int asus_new_rfkill(struct asus_wmi *asus,
773 struct asus_rfkill *arfkill,
774 const char *name, enum rfkill_type type, int dev_id)
775{
776 int result = asus_wmi_get_devstate_simple(asus, dev_id);
777 struct rfkill **rfkill = &arfkill->rfkill;
778
779 if (result < 0)
780 return result;
781
782 arfkill->dev_id = dev_id;
783 arfkill->asus = asus;
784
785 if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless)
786 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
787 &asus_rfkill_wlan_ops, arfkill);
788 else
789 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
790 &asus_rfkill_ops, arfkill);
791
792 if (!*rfkill)
793 return -EINVAL;
794
795 rfkill_init_sw_state(*rfkill, !result);
796 result = rfkill_register(*rfkill);
797 if (result) {
798 rfkill_destroy(*rfkill);
799 *rfkill = NULL;
800 return result;
801 }
802 return 0;
803}
804
805static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
806{
807 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
808 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
809 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
810 if (asus->wlan.rfkill) {
811 rfkill_unregister(asus->wlan.rfkill);
812 rfkill_destroy(asus->wlan.rfkill);
813 asus->wlan.rfkill = NULL;
814 }
815 /*
816 * Refresh pci hotplug in case the rfkill state was changed after
817 * asus_unregister_rfkill_notifier()
818 */
819 asus_rfkill_hotplug(asus);
820 if (asus->hotplug_slot)
821 pci_hp_deregister(asus->hotplug_slot);
822 if (asus->hotplug_workqueue)
823 destroy_workqueue(asus->hotplug_workqueue);
824
825 if (asus->bluetooth.rfkill) {
826 rfkill_unregister(asus->bluetooth.rfkill);
827 rfkill_destroy(asus->bluetooth.rfkill);
828 asus->bluetooth.rfkill = NULL;
829 }
830 if (asus->wimax.rfkill) {
831 rfkill_unregister(asus->wimax.rfkill);
832 rfkill_destroy(asus->wimax.rfkill);
833 asus->wimax.rfkill = NULL;
834 }
835 if (asus->wwan3g.rfkill) {
836 rfkill_unregister(asus->wwan3g.rfkill);
837 rfkill_destroy(asus->wwan3g.rfkill);
838 asus->wwan3g.rfkill = NULL;
839 }
840 if (asus->gps.rfkill) {
841 rfkill_unregister(asus->gps.rfkill);
842 rfkill_destroy(asus->gps.rfkill);
843 asus->gps.rfkill = NULL;
844 }
845 if (asus->uwb.rfkill) {
846 rfkill_unregister(asus->uwb.rfkill);
847 rfkill_destroy(asus->uwb.rfkill);
848 asus->uwb.rfkill = NULL;
849 }
850}
851
852static int asus_wmi_rfkill_init(struct asus_wmi *asus)
853{
854 int result = 0;
855
856 mutex_init(&asus->hotplug_lock);
857 mutex_init(&asus->wmi_lock);
858
859 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
860 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
861
862 if (result && result != -ENODEV)
863 goto exit;
864
865 result = asus_new_rfkill(asus, &asus->bluetooth,
866 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
867 ASUS_WMI_DEVID_BLUETOOTH);
868
869 if (result && result != -ENODEV)
870 goto exit;
871
872 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
873 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
874
875 if (result && result != -ENODEV)
876 goto exit;
877
878 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
879 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
880
881 if (result && result != -ENODEV)
882 goto exit;
883
884 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
885 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
886
887 if (result && result != -ENODEV)
888 goto exit;
889
890 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
891 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
892
893 if (result && result != -ENODEV)
894 goto exit;
895
896 if (!asus->driver->hotplug_wireless)
897 goto exit;
898
899 result = asus_setup_pci_hotplug(asus);
900 /*
901 * If we get -EBUSY then something else is handling the PCI hotplug -
902 * don't fail in this case
903 */
904 if (result == -EBUSY)
905 result = 0;
906
907 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
908 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
909 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
910 /*
911 * Refresh pci hotplug in case the rfkill state was changed during
912 * setup.
913 */
914 asus_rfkill_hotplug(asus);
915
916exit:
917 if (result && result != -ENODEV)
918 asus_wmi_rfkill_exit(asus);
919
920 if (result == -ENODEV)
921 result = 0;
922
923 return result;
924}
925
926/*
927 * Hwmon device
928 */
929static ssize_t asus_hwmon_pwm1(struct device *dev,
930 struct device_attribute *attr,
931 char *buf)
932{
933 struct asus_wmi *asus = dev_get_drvdata(dev);
934 u32 value;
935 int err;
936
937 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
938
939 if (err < 0)
940 return err;
941
942 value &= 0xFF;
943
944 if (value == 1) /* Low Speed */
945 value = 85;
946 else if (value == 2)
947 value = 170;
948 else if (value == 3)
949 value = 255;
950 else if (value != 0) {
951 pr_err("Unknown fan speed %#x", value);
952 value = -1;
953 }
954
955 return sprintf(buf, "%d\n", value);
956}
957
958static ssize_t asus_hwmon_temp1(struct device *dev,
959 struct device_attribute *attr,
960 char *buf)
961{
962 struct asus_wmi *asus = dev_get_drvdata(dev);
963 u32 value;
964 int err;
965
966 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
967
968 if (err < 0)
969 return err;
970
971 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
972
973 return sprintf(buf, "%d\n", value);
974}
975
976static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
977static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
978
979static ssize_t
980show_name(struct device *dev, struct device_attribute *attr, char *buf)
981{
982 return sprintf(buf, "asus\n");
983}
984static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
985
986static struct attribute *hwmon_attributes[] = {
987 &sensor_dev_attr_pwm1.dev_attr.attr,
988 &sensor_dev_attr_temp1_input.dev_attr.attr,
989 &sensor_dev_attr_name.dev_attr.attr,
990 NULL
991};
992
993static mode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
994 struct attribute *attr, int idx)
995{
996 struct device *dev = container_of(kobj, struct device, kobj);
997 struct platform_device *pdev = to_platform_device(dev->parent);
998 struct asus_wmi *asus = platform_get_drvdata(pdev);
999 bool ok = true;
1000 int dev_id = -1;
1001 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1002
1003 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1004 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1005 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1006 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1007
1008 if (dev_id != -1) {
1009 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1010
1011 if (err < 0)
1012 return 0; /* can't return negative here */
1013 }
1014
1015 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1016 /*
1017 * We need to find a better way, probably using sfun,
1018 * bits or spec ...
1019 * Currently we disable it if:
1020 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1021 * - reverved bits are non-zero
1022 * - sfun and presence bit are not set
1023 */
1024 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1025 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1026 ok = false;
1027 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1028 /* If value is zero, something is clearly wrong */
1029 if (value == 0)
1030 ok = false;
1031 }
1032
1033 return ok ? attr->mode : 0;
1034}
1035
1036static struct attribute_group hwmon_attribute_group = {
1037 .is_visible = asus_hwmon_sysfs_is_visible,
1038 .attrs = hwmon_attributes
1039};
1040
1041static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1042{
1043 struct device *hwmon;
1044
1045 hwmon = asus->hwmon_device;
1046 if (!hwmon)
1047 return;
1048 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1049 hwmon_device_unregister(hwmon);
1050 asus->hwmon_device = NULL;
1051}
1052
1053static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1054{
1055 struct device *hwmon;
1056 int result;
1057
1058 hwmon = hwmon_device_register(&asus->platform_device->dev);
1059 if (IS_ERR(hwmon)) {
1060 pr_err("Could not register asus hwmon device\n");
1061 return PTR_ERR(hwmon);
1062 }
1063 dev_set_drvdata(hwmon, asus);
1064 asus->hwmon_device = hwmon;
1065 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1066 if (result)
1067 asus_wmi_hwmon_exit(asus);
1068 return result;
1069}
1070
1071/*
1072 * Backlight
1073 */
1074static int read_backlight_power(struct asus_wmi *asus)
1075{
1076 int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT);
1077
1078 if (ret < 0)
1079 return ret;
1080
1081 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1082}
1083
1084static int read_brightness_max(struct asus_wmi *asus)
1085{
1086 u32 retval;
1087 int err;
1088
1089 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1090
1091 if (err < 0)
1092 return err;
1093
1094 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1095 retval >>= 8;
1096
1097 if (!retval)
1098 return -ENODEV;
1099
1100 return retval;
1101}
1102
1103static int read_brightness(struct backlight_device *bd)
1104{
1105 struct asus_wmi *asus = bl_get_data(bd);
1106 u32 retval;
1107 int err;
1108
1109 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1110
1111 if (err < 0)
1112 return err;
1113
1114 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1115}
1116
1117static int update_bl_status(struct backlight_device *bd)
1118{
1119 struct asus_wmi *asus = bl_get_data(bd);
1120 u32 ctrl_param;
1121 int power, err;
1122
1123 ctrl_param = bd->props.brightness;
1124
1125 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1126 ctrl_param, NULL);
1127
1128 if (err < 0)
1129 return err;
1130
1131 power = read_backlight_power(asus);
1132 if (power != -ENODEV && bd->props.power != power) {
1133 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1134 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1135 ctrl_param, NULL);
1136 }
1137 return err;
1138}
1139
1140static const struct backlight_ops asus_wmi_bl_ops = {
1141 .get_brightness = read_brightness,
1142 .update_status = update_bl_status,
1143};
1144
1145static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1146{
1147 struct backlight_device *bd = asus->backlight_device;
1148 int old = bd->props.brightness;
1149 int new = old;
1150
1151 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1152 new = code - NOTIFY_BRNUP_MIN + 1;
1153 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1154 new = code - NOTIFY_BRNDOWN_MIN;
1155
1156 bd->props.brightness = new;
1157 backlight_update_status(bd);
1158 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1159
1160 return old;
1161}
1162
1163static int asus_wmi_backlight_init(struct asus_wmi *asus)
1164{
1165 struct backlight_device *bd;
1166 struct backlight_properties props;
1167 int max;
1168 int power;
1169
1170 max = read_brightness_max(asus);
1171
1172 if (max == -ENODEV)
1173 max = 0;
1174 else if (max < 0)
1175 return max;
1176
1177 power = read_backlight_power(asus);
1178
1179 if (power == -ENODEV)
1180 power = FB_BLANK_UNBLANK;
1181 else if (power < 0)
1182 return power;
1183
1184 memset(&props, 0, sizeof(struct backlight_properties));
1185 props.type = BACKLIGHT_PLATFORM;
1186 props.max_brightness = max;
1187 bd = backlight_device_register(asus->driver->name,
1188 &asus->platform_device->dev, asus,
1189 &asus_wmi_bl_ops, &props);
1190 if (IS_ERR(bd)) {
1191 pr_err("Could not register backlight device\n");
1192 return PTR_ERR(bd);
1193 }
1194
1195 asus->backlight_device = bd;
1196
1197 bd->props.brightness = read_brightness(bd);
1198 bd->props.power = power;
1199 backlight_update_status(bd);
1200
1201 return 0;
1202}
1203
1204static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1205{
1206 if (asus->backlight_device)
1207 backlight_device_unregister(asus->backlight_device);
1208
1209 asus->backlight_device = NULL;
1210}
1211
1212static void asus_wmi_notify(u32 value, void *context)
1213{
1214 struct asus_wmi *asus = context;
1215 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1216 union acpi_object *obj;
1217 acpi_status status;
1218 int code;
1219 int orig_code;
1220 unsigned int key_value = 1;
1221 bool autorelease = 1;
1222
1223 status = wmi_get_event_data(value, &response);
1224 if (status != AE_OK) {
1225 pr_err("bad event status 0x%x\n", status);
1226 return;
1227 }
1228
1229 obj = (union acpi_object *)response.pointer;
1230
1231 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1232 goto exit;
1233
1234 code = obj->integer.value;
1235 orig_code = code;
1236
1237 if (asus->driver->key_filter) {
1238 asus->driver->key_filter(asus->driver, &code, &key_value,
1239 &autorelease);
1240 if (code == ASUS_WMI_KEY_IGNORE)
1241 goto exit;
1242 }
1243
1244 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1245 code = NOTIFY_BRNUP_MIN;
1246 else if (code >= NOTIFY_BRNDOWN_MIN &&
1247 code <= NOTIFY_BRNDOWN_MAX)
1248 code = NOTIFY_BRNDOWN_MIN;
1249
1250 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1251 if (!acpi_video_backlight_support())
1252 asus_wmi_backlight_notify(asus, orig_code);
1253 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1254 key_value, autorelease))
1255 pr_info("Unknown key %x pressed\n", code);
1256
1257exit:
1258 kfree(obj);
1259}
1260
1261/*
1262 * Sys helpers
1263 */
1264static int parse_arg(const char *buf, unsigned long count, int *val)
1265{
1266 if (!count)
1267 return 0;
1268 if (sscanf(buf, "%i", val) != 1)
1269 return -EINVAL;
1270 return count;
1271}
1272
1273static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1274 const char *buf, size_t count)
1275{
1276 u32 retval;
1277 int rv, err, value;
1278
1279 value = asus_wmi_get_devstate_simple(asus, devid);
1280 if (value == -ENODEV) /* Check device presence */
1281 return value;
1282
1283 rv = parse_arg(buf, count, &value);
1284 err = asus_wmi_set_devstate(devid, value, &retval);
1285
1286 if (err < 0)
1287 return err;
1288
1289 return rv;
1290}
1291
1292static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1293{
1294 int value = asus_wmi_get_devstate_simple(asus, devid);
1295
1296 if (value < 0)
1297 return value;
1298
1299 return sprintf(buf, "%d\n", value);
1300}
1301
1302#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1303 static ssize_t show_##_name(struct device *dev, \
1304 struct device_attribute *attr, \
1305 char *buf) \
1306 { \
1307 struct asus_wmi *asus = dev_get_drvdata(dev); \
1308 \
1309 return show_sys_wmi(asus, _cm, buf); \
1310 } \
1311 static ssize_t store_##_name(struct device *dev, \
1312 struct device_attribute *attr, \
1313 const char *buf, size_t count) \
1314 { \
1315 struct asus_wmi *asus = dev_get_drvdata(dev); \
1316 \
1317 return store_sys_wmi(asus, _cm, buf, count); \
1318 } \
1319 static struct device_attribute dev_attr_##_name = { \
1320 .attr = { \
1321 .name = __stringify(_name), \
1322 .mode = _mode }, \
1323 .show = show_##_name, \
1324 .store = store_##_name, \
1325 }
1326
1327ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1328ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1329ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1330
1331static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1332 const char *buf, size_t count)
1333{
1334 int value, rv;
1335
1336 if (!count || sscanf(buf, "%i", &value) != 1)
1337 return -EINVAL;
1338 if (value < 0 || value > 2)
1339 return -EINVAL;
1340
1341 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1342 if (rv < 0)
1343 return rv;
1344
1345 return count;
1346}
1347
1348static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1349
1350static struct attribute *platform_attributes[] = {
1351 &dev_attr_cpufv.attr,
1352 &dev_attr_camera.attr,
1353 &dev_attr_cardr.attr,
1354 &dev_attr_touchpad.attr,
1355 NULL
1356};
1357
1358static mode_t asus_sysfs_is_visible(struct kobject *kobj,
1359 struct attribute *attr, int idx)
1360{
1361 struct device *dev = container_of(kobj, struct device, kobj);
1362 struct platform_device *pdev = to_platform_device(dev);
1363 struct asus_wmi *asus = platform_get_drvdata(pdev);
1364 bool ok = true;
1365 int devid = -1;
1366
1367 if (attr == &dev_attr_camera.attr)
1368 devid = ASUS_WMI_DEVID_CAMERA;
1369 else if (attr == &dev_attr_cardr.attr)
1370 devid = ASUS_WMI_DEVID_CARDREADER;
1371 else if (attr == &dev_attr_touchpad.attr)
1372 devid = ASUS_WMI_DEVID_TOUCHPAD;
1373
1374 if (devid != -1)
1375 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1376
1377 return ok ? attr->mode : 0;
1378}
1379
1380static struct attribute_group platform_attribute_group = {
1381 .is_visible = asus_sysfs_is_visible,
1382 .attrs = platform_attributes
1383};
1384
1385static void asus_wmi_sysfs_exit(struct platform_device *device)
1386{
1387 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1388}
1389
1390static int asus_wmi_sysfs_init(struct platform_device *device)
1391{
1392 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1393}
1394
1395/*
1396 * Platform device
1397 */
1398static int asus_wmi_platform_init(struct asus_wmi *asus)
1399{
1400 int rv;
1401
1402 /* INIT enable hotkeys on some models */
1403 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1404 pr_info("Initialization: %#x", rv);
1405
1406 /* We don't know yet what to do with this version... */
1407 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1408 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1409 asus->spec = rv;
1410 }
1411
1412 /*
1413 * The SFUN method probably allows the original driver to get the list
1414 * of features supported by a given model. For now, 0x0100 or 0x0800
1415 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1416 * The significance of others is yet to be found.
1417 */
1418 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1419 pr_info("SFUN value: %#x", rv);
1420 asus->sfun = rv;
1421 }
1422
1423 /*
1424 * Eee PC and Notebooks seems to have different method_id for DSTS,
1425 * but it may also be related to the BIOS's SPEC.
1426 * Note, on most Eeepc, there is no way to check if a method exist
1427 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1428 * but once again, SPEC may probably be used for that kind of things.
1429 */
1430 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1431 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1432 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1433 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1434
1435 if (!asus->dsts_id) {
1436 pr_err("Can't find DSTS");
1437 return -ENODEV;
1438 }
1439
1440 /* CWAP allow to define the behavior of the Fn+F2 key,
1441 * this method doesn't seems to be present on Eee PCs */
1442 if (asus->driver->wapf >= 0)
1443 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1444 asus->driver->wapf, NULL);
1445
1446 return asus_wmi_sysfs_init(asus->platform_device);
1447}
1448
1449static void asus_wmi_platform_exit(struct asus_wmi *asus)
1450{
1451 asus_wmi_sysfs_exit(asus->platform_device);
1452}
1453
1454/*
1455 * debugfs
1456 */
1457struct asus_wmi_debugfs_node {
1458 struct asus_wmi *asus;
1459 char *name;
1460 int (*show) (struct seq_file *m, void *data);
1461};
1462
1463static int show_dsts(struct seq_file *m, void *data)
1464{
1465 struct asus_wmi *asus = m->private;
1466 int err;
1467 u32 retval = -1;
1468
1469 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1470
1471 if (err < 0)
1472 return err;
1473
1474 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1475
1476 return 0;
1477}
1478
1479static int show_devs(struct seq_file *m, void *data)
1480{
1481 struct asus_wmi *asus = m->private;
1482 int err;
1483 u32 retval = -1;
1484
1485 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1486 &retval);
1487
1488 if (err < 0)
1489 return err;
1490
1491 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1492 asus->debug.ctrl_param, retval);
1493
1494 return 0;
1495}
1496
1497static int show_call(struct seq_file *m, void *data)
1498{
1499 struct asus_wmi *asus = m->private;
1500 struct bios_args args = {
1501 .arg0 = asus->debug.dev_id,
1502 .arg1 = asus->debug.ctrl_param,
1503 };
1504 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1505 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1506 union acpi_object *obj;
1507 acpi_status status;
1508
1509 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1510 1, asus->debug.method_id,
1511 &input, &output);
1512
1513 if (ACPI_FAILURE(status))
1514 return -EIO;
1515
1516 obj = (union acpi_object *)output.pointer;
1517 if (obj && obj->type == ACPI_TYPE_INTEGER)
1518 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1519 asus->debug.dev_id, asus->debug.ctrl_param,
1520 (u32) obj->integer.value);
1521 else
1522 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1523 asus->debug.dev_id, asus->debug.ctrl_param,
1524 obj ? obj->type : -1);
1525
1526 kfree(obj);
1527
1528 return 0;
1529}
1530
1531static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1532 {NULL, "devs", show_devs},
1533 {NULL, "dsts", show_dsts},
1534 {NULL, "call", show_call},
1535};
1536
1537static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1538{
1539 struct asus_wmi_debugfs_node *node = inode->i_private;
1540
1541 return single_open(file, node->show, node->asus);
1542}
1543
1544static const struct file_operations asus_wmi_debugfs_io_ops = {
1545 .owner = THIS_MODULE,
1546 .open = asus_wmi_debugfs_open,
1547 .read = seq_read,
1548 .llseek = seq_lseek,
1549 .release = single_release,
1550};
1551
1552static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1553{
1554 debugfs_remove_recursive(asus->debug.root);
1555}
1556
1557static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1558{
1559 struct dentry *dent;
1560 int i;
1561
1562 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1563 if (!asus->debug.root) {
1564 pr_err("failed to create debugfs directory");
1565 goto error_debugfs;
1566 }
1567
1568 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1569 asus->debug.root, &asus->debug.method_id);
1570 if (!dent)
1571 goto error_debugfs;
1572
1573 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1574 asus->debug.root, &asus->debug.dev_id);
1575 if (!dent)
1576 goto error_debugfs;
1577
1578 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1579 asus->debug.root, &asus->debug.ctrl_param);
1580 if (!dent)
1581 goto error_debugfs;
1582
1583 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1584 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1585
1586 node->asus = asus;
1587 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1588 asus->debug.root, node,
1589 &asus_wmi_debugfs_io_ops);
1590 if (!dent) {
1591 pr_err("failed to create debug file: %s\n", node->name);
1592 goto error_debugfs;
1593 }
1594 }
1595
1596 return 0;
1597
1598error_debugfs:
1599 asus_wmi_debugfs_exit(asus);
1600 return -ENOMEM;
1601}
1602
1603/*
1604 * WMI Driver
1605 */
1606static int asus_wmi_add(struct platform_device *pdev)
1607{
1608 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1609 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1610 struct asus_wmi *asus;
1611 acpi_status status;
1612 int err;
1613
1614 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1615 if (!asus)
1616 return -ENOMEM;
1617
1618 asus->driver = wdrv;
1619 asus->platform_device = pdev;
1620 wdrv->platform_device = pdev;
1621 platform_set_drvdata(asus->platform_device, asus);
1622
1623 if (wdrv->quirks)
1624 wdrv->quirks(asus->driver);
1625
1626 err = asus_wmi_platform_init(asus);
1627 if (err)
1628 goto fail_platform;
1629
1630 err = asus_wmi_input_init(asus);
1631 if (err)
1632 goto fail_input;
1633
1634 err = asus_wmi_hwmon_init(asus);
1635 if (err)
1636 goto fail_hwmon;
1637
1638 err = asus_wmi_led_init(asus);
1639 if (err)
1640 goto fail_leds;
1641
1642 err = asus_wmi_rfkill_init(asus);
1643 if (err)
1644 goto fail_rfkill;
1645
1646 if (!acpi_video_backlight_support()) {
1647 err = asus_wmi_backlight_init(asus);
1648 if (err && err != -ENODEV)
1649 goto fail_backlight;
1650 } else
1651 pr_info("Backlight controlled by ACPI video driver\n");
1652
1653 status = wmi_install_notify_handler(asus->driver->event_guid,
1654 asus_wmi_notify, asus);
1655 if (ACPI_FAILURE(status)) {
1656 pr_err("Unable to register notify handler - %d\n", status);
1657 err = -ENODEV;
1658 goto fail_wmi_handler;
1659 }
1660
1661 err = asus_wmi_debugfs_init(asus);
1662 if (err)
1663 goto fail_debugfs;
1664
1665 return 0;
1666
1667fail_debugfs:
1668 wmi_remove_notify_handler(asus->driver->event_guid);
1669fail_wmi_handler:
1670 asus_wmi_backlight_exit(asus);
1671fail_backlight:
1672 asus_wmi_rfkill_exit(asus);
1673fail_rfkill:
1674 asus_wmi_led_exit(asus);
1675fail_leds:
1676 asus_wmi_hwmon_exit(asus);
1677fail_hwmon:
1678 asus_wmi_input_exit(asus);
1679fail_input:
1680 asus_wmi_platform_exit(asus);
1681fail_platform:
1682 kfree(asus);
1683 return err;
1684}
1685
1686static int asus_wmi_remove(struct platform_device *device)
1687{
1688 struct asus_wmi *asus;
1689
1690 asus = platform_get_drvdata(device);
1691 wmi_remove_notify_handler(asus->driver->event_guid);
1692 asus_wmi_backlight_exit(asus);
1693 asus_wmi_input_exit(asus);
1694 asus_wmi_hwmon_exit(asus);
1695 asus_wmi_led_exit(asus);
1696 asus_wmi_rfkill_exit(asus);
1697 asus_wmi_debugfs_exit(asus);
1698 asus_wmi_platform_exit(asus);
1699
1700 kfree(asus);
1701 return 0;
1702}
1703
1704/*
1705 * Platform driver - hibernate/resume callbacks
1706 */
1707static int asus_hotk_thaw(struct device *device)
1708{
1709 struct asus_wmi *asus = dev_get_drvdata(device);
1710
1711 if (asus->wlan.rfkill) {
1712 bool wlan;
1713
1714 /*
1715 * Work around bios bug - acpi _PTS turns off the wireless led
1716 * during suspend. Normally it restores it on resume, but
1717 * we should kick it ourselves in case hibernation is aborted.
1718 */
1719 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1720 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1721 }
1722
1723 return 0;
1724}
1725
1726static int asus_hotk_restore(struct device *device)
1727{
1728 struct asus_wmi *asus = dev_get_drvdata(device);
1729 int bl;
1730
1731 /* Refresh both wlan rfkill state and pci hotplug */
1732 if (asus->wlan.rfkill)
1733 asus_rfkill_hotplug(asus);
1734
1735 if (asus->bluetooth.rfkill) {
1736 bl = !asus_wmi_get_devstate_simple(asus,
1737 ASUS_WMI_DEVID_BLUETOOTH);
1738 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1739 }
1740 if (asus->wimax.rfkill) {
1741 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1742 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1743 }
1744 if (asus->wwan3g.rfkill) {
1745 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1746 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1747 }
1748 if (asus->gps.rfkill) {
1749 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1750 rfkill_set_sw_state(asus->gps.rfkill, bl);
1751 }
1752 if (asus->uwb.rfkill) {
1753 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1754 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1755 }
1756
1757 return 0;
1758}
1759
1760static const struct dev_pm_ops asus_pm_ops = {
1761 .thaw = asus_hotk_thaw,
1762 .restore = asus_hotk_restore,
1763};
1764
1765static int asus_wmi_probe(struct platform_device *pdev)
1766{
1767 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1768 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1769 int ret;
1770
1771 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1772 pr_warn("Management GUID not found\n");
1773 return -ENODEV;
1774 }
1775
1776 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1777 pr_warn("Event GUID not found\n");
1778 return -ENODEV;
1779 }
1780
1781 if (wdrv->probe) {
1782 ret = wdrv->probe(pdev);
1783 if (ret)
1784 return ret;
1785 }
1786
1787 return asus_wmi_add(pdev);
1788}
1789
1790static bool used;
1791
1792int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1793{
1794 struct platform_driver *platform_driver;
1795 struct platform_device *platform_device;
1796
1797 if (used)
1798 return -EBUSY;
1799
1800 platform_driver = &driver->platform_driver;
1801 platform_driver->remove = asus_wmi_remove;
1802 platform_driver->driver.owner = driver->owner;
1803 platform_driver->driver.name = driver->name;
1804 platform_driver->driver.pm = &asus_pm_ops;
1805
1806 platform_device = platform_create_bundle(platform_driver,
1807 asus_wmi_probe,
1808 NULL, 0, NULL, 0);
1809 if (IS_ERR(platform_device))
1810 return PTR_ERR(platform_device);
1811
1812 used = true;
1813 return 0;
1814}
1815EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1816
1817void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1818{
1819 platform_device_unregister(driver->platform_device);
1820 platform_driver_unregister(&driver->platform_driver);
1821 used = false;
1822}
1823EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1824
1825static int __init asus_wmi_init(void)
1826{
1827 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1828 pr_info("Asus Management GUID not found");
1829 return -ENODEV;
1830 }
1831
1832 pr_info("ASUS WMI generic driver loaded");
1833 return 0;
1834}
1835
1836static void __exit asus_wmi_exit(void)
1837{
1838 pr_info("ASUS WMI generic driver unloaded");
1839}
1840
1841module_init(asus_wmi_init);
1842module_exit(asus_wmi_exit);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Asus PC WMI hotkey driver
4 *
5 * Copyright(C) 2010 Intel Corporation.
6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
7 *
8 * Portions based on wistron_btns.c:
9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12 */
13
14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/types.h>
20#include <linux/slab.h>
21#include <linux/input.h>
22#include <linux/input/sparse-keymap.h>
23#include <linux/fb.h>
24#include <linux/backlight.h>
25#include <linux/leds.h>
26#include <linux/rfkill.h>
27#include <linux/pci.h>
28#include <linux/pci_hotplug.h>
29#include <linux/power_supply.h>
30#include <linux/hwmon.h>
31#include <linux/hwmon-sysfs.h>
32#include <linux/debugfs.h>
33#include <linux/seq_file.h>
34#include <linux/platform_data/x86/asus-wmi.h>
35#include <linux/platform_device.h>
36#include <linux/thermal.h>
37#include <linux/acpi.h>
38#include <linux/dmi.h>
39
40#include <acpi/battery.h>
41#include <acpi/video.h>
42
43#include "asus-wmi.h"
44
45MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
46 "Yong Wang <yong.y.wang@intel.com>");
47MODULE_DESCRIPTION("Asus Generic WMI Driver");
48MODULE_LICENSE("GPL");
49
50#define to_asus_wmi_driver(pdrv) \
51 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
52
53#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
54
55#define NOTIFY_BRNUP_MIN 0x11
56#define NOTIFY_BRNUP_MAX 0x1f
57#define NOTIFY_BRNDOWN_MIN 0x20
58#define NOTIFY_BRNDOWN_MAX 0x2e
59#define NOTIFY_FNLOCK_TOGGLE 0x4e
60#define NOTIFY_KBD_BRTUP 0xc4
61#define NOTIFY_KBD_BRTDWN 0xc5
62#define NOTIFY_KBD_BRTTOGGLE 0xc7
63#define NOTIFY_KBD_FBM 0x99
64
65#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
66
67#define ASUS_FAN_DESC "cpu_fan"
68#define ASUS_FAN_MFUN 0x13
69#define ASUS_FAN_SFUN_READ 0x06
70#define ASUS_FAN_SFUN_WRITE 0x07
71
72/* Based on standard hwmon pwmX_enable values */
73#define ASUS_FAN_CTRL_FULLSPEED 0
74#define ASUS_FAN_CTRL_MANUAL 1
75#define ASUS_FAN_CTRL_AUTO 2
76
77#define ASUS_FAN_BOOST_MODE_NORMAL 0
78#define ASUS_FAN_BOOST_MODE_OVERBOOST 1
79#define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
80#define ASUS_FAN_BOOST_MODE_SILENT 2
81#define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
82#define ASUS_FAN_BOOST_MODES_MASK 0x03
83
84#define USB_INTEL_XUSB2PR 0xD0
85#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
86
87#define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
88#define ASUS_ACPI_UID_ATK "ATK"
89
90#define WMI_EVENT_QUEUE_SIZE 0x10
91#define WMI_EVENT_QUEUE_END 0x1
92#define WMI_EVENT_MASK 0xFFFF
93/* The WMI hotkey event value is always the same. */
94#define WMI_EVENT_VALUE_ATK 0xFF
95
96#define WMI_EVENT_MASK 0xFFFF
97
98static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
99
100static bool ashs_present(void)
101{
102 int i = 0;
103 while (ashs_ids[i]) {
104 if (acpi_dev_found(ashs_ids[i++]))
105 return true;
106 }
107 return false;
108}
109
110struct bios_args {
111 u32 arg0;
112 u32 arg1;
113 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
114} __packed;
115
116/*
117 * Struct that's used for all methods called via AGFN. Naming is
118 * identically to the AML code.
119 */
120struct agfn_args {
121 u16 mfun; /* probably "Multi-function" to be called */
122 u16 sfun; /* probably "Sub-function" to be called */
123 u16 len; /* size of the hole struct, including subfunction fields */
124 u8 stas; /* not used by now */
125 u8 err; /* zero on success */
126} __packed;
127
128/* struct used for calling fan read and write methods */
129struct agfn_fan_args {
130 struct agfn_args agfn; /* common fields */
131 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
132 u32 speed; /* read: RPM/100 - write: 0-255 */
133} __packed;
134
135/*
136 * <platform>/ - debugfs root directory
137 * dev_id - current dev_id
138 * ctrl_param - current ctrl_param
139 * method_id - current method_id
140 * devs - call DEVS(dev_id, ctrl_param) and print result
141 * dsts - call DSTS(dev_id) and print result
142 * call - call method_id(dev_id, ctrl_param) and print result
143 */
144struct asus_wmi_debug {
145 struct dentry *root;
146 u32 method_id;
147 u32 dev_id;
148 u32 ctrl_param;
149};
150
151struct asus_rfkill {
152 struct asus_wmi *asus;
153 struct rfkill *rfkill;
154 u32 dev_id;
155};
156
157enum fan_type {
158 FAN_TYPE_NONE = 0,
159 FAN_TYPE_AGFN, /* deprecated on newer platforms */
160 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
161};
162
163struct asus_wmi {
164 int dsts_id;
165 int spec;
166 int sfun;
167 bool wmi_event_queue;
168
169 struct input_dev *inputdev;
170 struct backlight_device *backlight_device;
171 struct platform_device *platform_device;
172
173 struct led_classdev wlan_led;
174 int wlan_led_wk;
175 struct led_classdev tpd_led;
176 int tpd_led_wk;
177 struct led_classdev kbd_led;
178 int kbd_led_wk;
179 struct led_classdev lightbar_led;
180 int lightbar_led_wk;
181 struct workqueue_struct *led_workqueue;
182 struct work_struct tpd_led_work;
183 struct work_struct wlan_led_work;
184 struct work_struct lightbar_led_work;
185
186 struct asus_rfkill wlan;
187 struct asus_rfkill bluetooth;
188 struct asus_rfkill wimax;
189 struct asus_rfkill wwan3g;
190 struct asus_rfkill gps;
191 struct asus_rfkill uwb;
192
193 enum fan_type fan_type;
194 int fan_pwm_mode;
195 int agfn_pwm;
196
197 bool fan_boost_mode_available;
198 u8 fan_boost_mode_mask;
199 u8 fan_boost_mode;
200
201 // The RSOC controls the maximum charging percentage.
202 bool battery_rsoc_available;
203
204 struct hotplug_slot hotplug_slot;
205 struct mutex hotplug_lock;
206 struct mutex wmi_lock;
207 struct workqueue_struct *hotplug_workqueue;
208 struct work_struct hotplug_work;
209
210 bool fnlock_locked;
211
212 struct asus_wmi_debug debug;
213
214 struct asus_wmi_driver *driver;
215};
216
217/* Input **********************************************************************/
218
219static int asus_wmi_input_init(struct asus_wmi *asus)
220{
221 int err;
222
223 asus->inputdev = input_allocate_device();
224 if (!asus->inputdev)
225 return -ENOMEM;
226
227 asus->inputdev->name = asus->driver->input_name;
228 asus->inputdev->phys = asus->driver->input_phys;
229 asus->inputdev->id.bustype = BUS_HOST;
230 asus->inputdev->dev.parent = &asus->platform_device->dev;
231 set_bit(EV_REP, asus->inputdev->evbit);
232
233 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
234 if (err)
235 goto err_free_dev;
236
237 err = input_register_device(asus->inputdev);
238 if (err)
239 goto err_free_dev;
240
241 return 0;
242
243err_free_dev:
244 input_free_device(asus->inputdev);
245 return err;
246}
247
248static void asus_wmi_input_exit(struct asus_wmi *asus)
249{
250 if (asus->inputdev)
251 input_unregister_device(asus->inputdev);
252
253 asus->inputdev = NULL;
254}
255
256/* WMI ************************************************************************/
257
258static int asus_wmi_evaluate_method3(u32 method_id,
259 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
260{
261 struct bios_args args = {
262 .arg0 = arg0,
263 .arg1 = arg1,
264 .arg2 = arg2,
265 };
266 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
267 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
268 acpi_status status;
269 union acpi_object *obj;
270 u32 tmp = 0;
271
272 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
273 &input, &output);
274
275 if (ACPI_FAILURE(status))
276 return -EIO;
277
278 obj = (union acpi_object *)output.pointer;
279 if (obj && obj->type == ACPI_TYPE_INTEGER)
280 tmp = (u32) obj->integer.value;
281
282 if (retval)
283 *retval = tmp;
284
285 kfree(obj);
286
287 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
288 return -ENODEV;
289
290 return 0;
291}
292
293int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
294{
295 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
296}
297EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
298
299static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
300{
301 struct acpi_buffer input;
302 u64 phys_addr;
303 u32 retval;
304 u32 status = -1;
305
306 /*
307 * Copy to dma capable address otherwise memory corruption occurs as
308 * bios has to be able to access it.
309 */
310 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
311 input.length = args.length;
312 if (!input.pointer)
313 return -ENOMEM;
314 phys_addr = virt_to_phys(input.pointer);
315
316 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
317 phys_addr, 0, &retval);
318 if (!status)
319 memcpy(args.pointer, input.pointer, args.length);
320
321 kfree(input.pointer);
322 if (status)
323 return -ENXIO;
324
325 return retval;
326}
327
328static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
329{
330 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
331}
332
333static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
334 u32 *retval)
335{
336 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
337 ctrl_param, retval);
338}
339
340/* Helper for special devices with magic return codes */
341static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
342 u32 dev_id, u32 mask)
343{
344 u32 retval = 0;
345 int err;
346
347 err = asus_wmi_get_devstate(asus, dev_id, &retval);
348 if (err < 0)
349 return err;
350
351 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
352 return -ENODEV;
353
354 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
355 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
356 return -ENODEV;
357 }
358
359 return retval & mask;
360}
361
362static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
363{
364 return asus_wmi_get_devstate_bits(asus, dev_id,
365 ASUS_WMI_DSTS_STATUS_BIT);
366}
367
368static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
369{
370 u32 retval;
371 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
372
373 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
374}
375
376/* Battery ********************************************************************/
377
378/* The battery maximum charging percentage */
379static int charge_end_threshold;
380
381static ssize_t charge_control_end_threshold_store(struct device *dev,
382 struct device_attribute *attr,
383 const char *buf, size_t count)
384{
385 int value, ret, rv;
386
387 ret = kstrtouint(buf, 10, &value);
388 if (ret)
389 return ret;
390
391 if (value < 0 || value > 100)
392 return -EINVAL;
393
394 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
395 if (ret)
396 return ret;
397
398 if (rv != 1)
399 return -EIO;
400
401 /* There isn't any method in the DSDT to read the threshold, so we
402 * save the threshold.
403 */
404 charge_end_threshold = value;
405 return count;
406}
407
408static ssize_t charge_control_end_threshold_show(struct device *device,
409 struct device_attribute *attr,
410 char *buf)
411{
412 return sprintf(buf, "%d\n", charge_end_threshold);
413}
414
415static DEVICE_ATTR_RW(charge_control_end_threshold);
416
417static int asus_wmi_battery_add(struct power_supply *battery)
418{
419 /* The WMI method does not provide a way to specific a battery, so we
420 * just assume it is the first battery.
421 */
422 if (strcmp(battery->desc->name, "BAT0") != 0)
423 return -ENODEV;
424
425 if (device_create_file(&battery->dev,
426 &dev_attr_charge_control_end_threshold))
427 return -ENODEV;
428
429 /* The charge threshold is only reset when the system is power cycled,
430 * and we can't get the current threshold so let set it to 100% when
431 * a battery is added.
432 */
433 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
434 charge_end_threshold = 100;
435
436 return 0;
437}
438
439static int asus_wmi_battery_remove(struct power_supply *battery)
440{
441 device_remove_file(&battery->dev,
442 &dev_attr_charge_control_end_threshold);
443 return 0;
444}
445
446static struct acpi_battery_hook battery_hook = {
447 .add_battery = asus_wmi_battery_add,
448 .remove_battery = asus_wmi_battery_remove,
449 .name = "ASUS Battery Extension",
450};
451
452static void asus_wmi_battery_init(struct asus_wmi *asus)
453{
454 asus->battery_rsoc_available = false;
455 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
456 asus->battery_rsoc_available = true;
457 battery_hook_register(&battery_hook);
458 }
459}
460
461static void asus_wmi_battery_exit(struct asus_wmi *asus)
462{
463 if (asus->battery_rsoc_available)
464 battery_hook_unregister(&battery_hook);
465}
466
467/* LEDs ***********************************************************************/
468
469/*
470 * These functions actually update the LED's, and are called from a
471 * workqueue. By doing this as separate work rather than when the LED
472 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
473 * potentially bad time, such as a timer interrupt.
474 */
475static void tpd_led_update(struct work_struct *work)
476{
477 int ctrl_param;
478 struct asus_wmi *asus;
479
480 asus = container_of(work, struct asus_wmi, tpd_led_work);
481
482 ctrl_param = asus->tpd_led_wk;
483 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
484}
485
486static void tpd_led_set(struct led_classdev *led_cdev,
487 enum led_brightness value)
488{
489 struct asus_wmi *asus;
490
491 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
492
493 asus->tpd_led_wk = !!value;
494 queue_work(asus->led_workqueue, &asus->tpd_led_work);
495}
496
497static int read_tpd_led_state(struct asus_wmi *asus)
498{
499 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
500}
501
502static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
503{
504 struct asus_wmi *asus;
505
506 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
507
508 return read_tpd_led_state(asus);
509}
510
511static void kbd_led_update(struct asus_wmi *asus)
512{
513 int ctrl_param = 0;
514
515 /*
516 * bits 0-2: level
517 * bit 7: light on/off
518 */
519 if (asus->kbd_led_wk > 0)
520 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
521
522 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
523}
524
525static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
526{
527 int retval;
528
529 /*
530 * bits 0-2: level
531 * bit 7: light on/off
532 * bit 8-10: environment (0: dark, 1: normal, 2: light)
533 * bit 17: status unknown
534 */
535 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
536 0xFFFF);
537
538 /* Unknown status is considered as off */
539 if (retval == 0x8000)
540 retval = 0;
541
542 if (retval < 0)
543 return retval;
544
545 if (level)
546 *level = retval & 0x7F;
547 if (env)
548 *env = (retval >> 8) & 0x7F;
549 return 0;
550}
551
552static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
553{
554 struct asus_wmi *asus;
555 int max_level;
556
557 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
558 max_level = asus->kbd_led.max_brightness;
559
560 asus->kbd_led_wk = clamp_val(value, 0, max_level);
561 kbd_led_update(asus);
562}
563
564static void kbd_led_set(struct led_classdev *led_cdev,
565 enum led_brightness value)
566{
567 /* Prevent disabling keyboard backlight on module unregister */
568 if (led_cdev->flags & LED_UNREGISTERING)
569 return;
570
571 do_kbd_led_set(led_cdev, value);
572}
573
574static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
575{
576 struct led_classdev *led_cdev = &asus->kbd_led;
577
578 do_kbd_led_set(led_cdev, value);
579 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
580}
581
582static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
583{
584 struct asus_wmi *asus;
585 int retval, value;
586
587 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
588
589 retval = kbd_led_read(asus, &value, NULL);
590 if (retval < 0)
591 return retval;
592
593 return value;
594}
595
596static int wlan_led_unknown_state(struct asus_wmi *asus)
597{
598 u32 result;
599
600 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
601
602 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
603}
604
605static void wlan_led_update(struct work_struct *work)
606{
607 int ctrl_param;
608 struct asus_wmi *asus;
609
610 asus = container_of(work, struct asus_wmi, wlan_led_work);
611
612 ctrl_param = asus->wlan_led_wk;
613 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
614}
615
616static void wlan_led_set(struct led_classdev *led_cdev,
617 enum led_brightness value)
618{
619 struct asus_wmi *asus;
620
621 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
622
623 asus->wlan_led_wk = !!value;
624 queue_work(asus->led_workqueue, &asus->wlan_led_work);
625}
626
627static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
628{
629 struct asus_wmi *asus;
630 u32 result;
631
632 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
633 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
634
635 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
636}
637
638static void lightbar_led_update(struct work_struct *work)
639{
640 struct asus_wmi *asus;
641 int ctrl_param;
642
643 asus = container_of(work, struct asus_wmi, lightbar_led_work);
644
645 ctrl_param = asus->lightbar_led_wk;
646 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
647}
648
649static void lightbar_led_set(struct led_classdev *led_cdev,
650 enum led_brightness value)
651{
652 struct asus_wmi *asus;
653
654 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
655
656 asus->lightbar_led_wk = !!value;
657 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
658}
659
660static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
661{
662 struct asus_wmi *asus;
663 u32 result;
664
665 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
666 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
667
668 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
669}
670
671static void asus_wmi_led_exit(struct asus_wmi *asus)
672{
673 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
674 led_classdev_unregister(&asus->kbd_led);
675 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
676 led_classdev_unregister(&asus->tpd_led);
677 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
678 led_classdev_unregister(&asus->wlan_led);
679 if (!IS_ERR_OR_NULL(asus->lightbar_led.dev))
680 led_classdev_unregister(&asus->lightbar_led);
681 if (asus->led_workqueue)
682 destroy_workqueue(asus->led_workqueue);
683}
684
685static int asus_wmi_led_init(struct asus_wmi *asus)
686{
687 int rv = 0, led_val;
688
689 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
690 if (!asus->led_workqueue)
691 return -ENOMEM;
692
693 if (read_tpd_led_state(asus) >= 0) {
694 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
695
696 asus->tpd_led.name = "asus::touchpad";
697 asus->tpd_led.brightness_set = tpd_led_set;
698 asus->tpd_led.brightness_get = tpd_led_get;
699 asus->tpd_led.max_brightness = 1;
700
701 rv = led_classdev_register(&asus->platform_device->dev,
702 &asus->tpd_led);
703 if (rv)
704 goto error;
705 }
706
707 if (!kbd_led_read(asus, &led_val, NULL)) {
708 asus->kbd_led_wk = led_val;
709 asus->kbd_led.name = "asus::kbd_backlight";
710 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
711 asus->kbd_led.brightness_set = kbd_led_set;
712 asus->kbd_led.brightness_get = kbd_led_get;
713 asus->kbd_led.max_brightness = 3;
714
715 rv = led_classdev_register(&asus->platform_device->dev,
716 &asus->kbd_led);
717 if (rv)
718 goto error;
719 }
720
721 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
722 && (asus->driver->quirks->wapf > 0)) {
723 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
724
725 asus->wlan_led.name = "asus::wlan";
726 asus->wlan_led.brightness_set = wlan_led_set;
727 if (!wlan_led_unknown_state(asus))
728 asus->wlan_led.brightness_get = wlan_led_get;
729 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
730 asus->wlan_led.max_brightness = 1;
731 asus->wlan_led.default_trigger = "asus-wlan";
732
733 rv = led_classdev_register(&asus->platform_device->dev,
734 &asus->wlan_led);
735 if (rv)
736 goto error;
737 }
738
739 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
740 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
741
742 asus->lightbar_led.name = "asus::lightbar";
743 asus->lightbar_led.brightness_set = lightbar_led_set;
744 asus->lightbar_led.brightness_get = lightbar_led_get;
745 asus->lightbar_led.max_brightness = 1;
746
747 rv = led_classdev_register(&asus->platform_device->dev,
748 &asus->lightbar_led);
749 }
750
751error:
752 if (rv)
753 asus_wmi_led_exit(asus);
754
755 return rv;
756}
757
758/* RF *************************************************************************/
759
760/*
761 * PCI hotplug (for wlan rfkill)
762 */
763static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
764{
765 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
766
767 if (result < 0)
768 return false;
769 return !result;
770}
771
772static void asus_rfkill_hotplug(struct asus_wmi *asus)
773{
774 struct pci_dev *dev;
775 struct pci_bus *bus;
776 bool blocked;
777 bool absent;
778 u32 l;
779
780 mutex_lock(&asus->wmi_lock);
781 blocked = asus_wlan_rfkill_blocked(asus);
782 mutex_unlock(&asus->wmi_lock);
783
784 mutex_lock(&asus->hotplug_lock);
785 pci_lock_rescan_remove();
786
787 if (asus->wlan.rfkill)
788 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
789
790 if (asus->hotplug_slot.ops) {
791 bus = pci_find_bus(0, 1);
792 if (!bus) {
793 pr_warn("Unable to find PCI bus 1?\n");
794 goto out_unlock;
795 }
796
797 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
798 pr_err("Unable to read PCI config space?\n");
799 goto out_unlock;
800 }
801 absent = (l == 0xffffffff);
802
803 if (blocked != absent) {
804 pr_warn("BIOS says wireless lan is %s, "
805 "but the pci device is %s\n",
806 blocked ? "blocked" : "unblocked",
807 absent ? "absent" : "present");
808 pr_warn("skipped wireless hotplug as probably "
809 "inappropriate for this model\n");
810 goto out_unlock;
811 }
812
813 if (!blocked) {
814 dev = pci_get_slot(bus, 0);
815 if (dev) {
816 /* Device already present */
817 pci_dev_put(dev);
818 goto out_unlock;
819 }
820 dev = pci_scan_single_device(bus, 0);
821 if (dev) {
822 pci_bus_assign_resources(bus);
823 pci_bus_add_device(dev);
824 }
825 } else {
826 dev = pci_get_slot(bus, 0);
827 if (dev) {
828 pci_stop_and_remove_bus_device(dev);
829 pci_dev_put(dev);
830 }
831 }
832 }
833
834out_unlock:
835 pci_unlock_rescan_remove();
836 mutex_unlock(&asus->hotplug_lock);
837}
838
839static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
840{
841 struct asus_wmi *asus = data;
842
843 if (event != ACPI_NOTIFY_BUS_CHECK)
844 return;
845
846 /*
847 * We can't call directly asus_rfkill_hotplug because most
848 * of the time WMBC is still being executed and not reetrant.
849 * There is currently no way to tell ACPICA that we want this
850 * method to be serialized, we schedule a asus_rfkill_hotplug
851 * call later, in a safer context.
852 */
853 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
854}
855
856static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
857{
858 acpi_status status;
859 acpi_handle handle;
860
861 status = acpi_get_handle(NULL, node, &handle);
862 if (ACPI_FAILURE(status))
863 return -ENODEV;
864
865 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
866 asus_rfkill_notify, asus);
867 if (ACPI_FAILURE(status))
868 pr_warn("Failed to register notify on %s\n", node);
869
870 return 0;
871}
872
873static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
874{
875 acpi_status status = AE_OK;
876 acpi_handle handle;
877
878 status = acpi_get_handle(NULL, node, &handle);
879 if (ACPI_FAILURE(status))
880 return;
881
882 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
883 asus_rfkill_notify);
884 if (ACPI_FAILURE(status))
885 pr_err("Error removing rfkill notify handler %s\n", node);
886}
887
888static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
889 u8 *value)
890{
891 struct asus_wmi *asus = container_of(hotplug_slot,
892 struct asus_wmi, hotplug_slot);
893 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
894
895 if (result < 0)
896 return result;
897
898 *value = !!result;
899 return 0;
900}
901
902static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
903 .get_adapter_status = asus_get_adapter_status,
904 .get_power_status = asus_get_adapter_status,
905};
906
907static void asus_hotplug_work(struct work_struct *work)
908{
909 struct asus_wmi *asus;
910
911 asus = container_of(work, struct asus_wmi, hotplug_work);
912 asus_rfkill_hotplug(asus);
913}
914
915static int asus_setup_pci_hotplug(struct asus_wmi *asus)
916{
917 int ret = -ENOMEM;
918 struct pci_bus *bus = pci_find_bus(0, 1);
919
920 if (!bus) {
921 pr_err("Unable to find wifi PCI bus\n");
922 return -ENODEV;
923 }
924
925 asus->hotplug_workqueue =
926 create_singlethread_workqueue("hotplug_workqueue");
927 if (!asus->hotplug_workqueue)
928 goto error_workqueue;
929
930 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
931
932 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
933
934 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
935 if (ret) {
936 pr_err("Unable to register hotplug slot - %d\n", ret);
937 goto error_register;
938 }
939
940 return 0;
941
942error_register:
943 asus->hotplug_slot.ops = NULL;
944 destroy_workqueue(asus->hotplug_workqueue);
945error_workqueue:
946 return ret;
947}
948
949/*
950 * Rfkill devices
951 */
952static int asus_rfkill_set(void *data, bool blocked)
953{
954 struct asus_rfkill *priv = data;
955 u32 ctrl_param = !blocked;
956 u32 dev_id = priv->dev_id;
957
958 /*
959 * If the user bit is set, BIOS can't set and record the wlan status,
960 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
961 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
962 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
963 * while setting the wlan status through WMI.
964 * This is also the behavior that windows app will do.
965 */
966 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
967 priv->asus->driver->wlan_ctrl_by_user)
968 dev_id = ASUS_WMI_DEVID_WLAN_LED;
969
970 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
971}
972
973static void asus_rfkill_query(struct rfkill *rfkill, void *data)
974{
975 struct asus_rfkill *priv = data;
976 int result;
977
978 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
979
980 if (result < 0)
981 return;
982
983 rfkill_set_sw_state(priv->rfkill, !result);
984}
985
986static int asus_rfkill_wlan_set(void *data, bool blocked)
987{
988 struct asus_rfkill *priv = data;
989 struct asus_wmi *asus = priv->asus;
990 int ret;
991
992 /*
993 * This handler is enabled only if hotplug is enabled.
994 * In this case, the asus_wmi_set_devstate() will
995 * trigger a wmi notification and we need to wait
996 * this call to finish before being able to call
997 * any wmi method
998 */
999 mutex_lock(&asus->wmi_lock);
1000 ret = asus_rfkill_set(data, blocked);
1001 mutex_unlock(&asus->wmi_lock);
1002 return ret;
1003}
1004
1005static const struct rfkill_ops asus_rfkill_wlan_ops = {
1006 .set_block = asus_rfkill_wlan_set,
1007 .query = asus_rfkill_query,
1008};
1009
1010static const struct rfkill_ops asus_rfkill_ops = {
1011 .set_block = asus_rfkill_set,
1012 .query = asus_rfkill_query,
1013};
1014
1015static int asus_new_rfkill(struct asus_wmi *asus,
1016 struct asus_rfkill *arfkill,
1017 const char *name, enum rfkill_type type, int dev_id)
1018{
1019 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1020 struct rfkill **rfkill = &arfkill->rfkill;
1021
1022 if (result < 0)
1023 return result;
1024
1025 arfkill->dev_id = dev_id;
1026 arfkill->asus = asus;
1027
1028 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1029 asus->driver->quirks->hotplug_wireless)
1030 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1031 &asus_rfkill_wlan_ops, arfkill);
1032 else
1033 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1034 &asus_rfkill_ops, arfkill);
1035
1036 if (!*rfkill)
1037 return -EINVAL;
1038
1039 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1040 (asus->driver->quirks->wapf > 0))
1041 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1042
1043 rfkill_init_sw_state(*rfkill, !result);
1044 result = rfkill_register(*rfkill);
1045 if (result) {
1046 rfkill_destroy(*rfkill);
1047 *rfkill = NULL;
1048 return result;
1049 }
1050 return 0;
1051}
1052
1053static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1054{
1055 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1056 return;
1057
1058 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1059 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1060 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1061 if (asus->wlan.rfkill) {
1062 rfkill_unregister(asus->wlan.rfkill);
1063 rfkill_destroy(asus->wlan.rfkill);
1064 asus->wlan.rfkill = NULL;
1065 }
1066 /*
1067 * Refresh pci hotplug in case the rfkill state was changed after
1068 * asus_unregister_rfkill_notifier()
1069 */
1070 asus_rfkill_hotplug(asus);
1071 if (asus->hotplug_slot.ops)
1072 pci_hp_deregister(&asus->hotplug_slot);
1073 if (asus->hotplug_workqueue)
1074 destroy_workqueue(asus->hotplug_workqueue);
1075
1076 if (asus->bluetooth.rfkill) {
1077 rfkill_unregister(asus->bluetooth.rfkill);
1078 rfkill_destroy(asus->bluetooth.rfkill);
1079 asus->bluetooth.rfkill = NULL;
1080 }
1081 if (asus->wimax.rfkill) {
1082 rfkill_unregister(asus->wimax.rfkill);
1083 rfkill_destroy(asus->wimax.rfkill);
1084 asus->wimax.rfkill = NULL;
1085 }
1086 if (asus->wwan3g.rfkill) {
1087 rfkill_unregister(asus->wwan3g.rfkill);
1088 rfkill_destroy(asus->wwan3g.rfkill);
1089 asus->wwan3g.rfkill = NULL;
1090 }
1091 if (asus->gps.rfkill) {
1092 rfkill_unregister(asus->gps.rfkill);
1093 rfkill_destroy(asus->gps.rfkill);
1094 asus->gps.rfkill = NULL;
1095 }
1096 if (asus->uwb.rfkill) {
1097 rfkill_unregister(asus->uwb.rfkill);
1098 rfkill_destroy(asus->uwb.rfkill);
1099 asus->uwb.rfkill = NULL;
1100 }
1101}
1102
1103static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1104{
1105 int result = 0;
1106
1107 mutex_init(&asus->hotplug_lock);
1108 mutex_init(&asus->wmi_lock);
1109
1110 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1111 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1112
1113 if (result && result != -ENODEV)
1114 goto exit;
1115
1116 result = asus_new_rfkill(asus, &asus->bluetooth,
1117 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1118 ASUS_WMI_DEVID_BLUETOOTH);
1119
1120 if (result && result != -ENODEV)
1121 goto exit;
1122
1123 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1124 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1125
1126 if (result && result != -ENODEV)
1127 goto exit;
1128
1129 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1130 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1131
1132 if (result && result != -ENODEV)
1133 goto exit;
1134
1135 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1136 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1137
1138 if (result && result != -ENODEV)
1139 goto exit;
1140
1141 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1142 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1143
1144 if (result && result != -ENODEV)
1145 goto exit;
1146
1147 if (!asus->driver->quirks->hotplug_wireless)
1148 goto exit;
1149
1150 result = asus_setup_pci_hotplug(asus);
1151 /*
1152 * If we get -EBUSY then something else is handling the PCI hotplug -
1153 * don't fail in this case
1154 */
1155 if (result == -EBUSY)
1156 result = 0;
1157
1158 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1159 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1160 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1161 /*
1162 * Refresh pci hotplug in case the rfkill state was changed during
1163 * setup.
1164 */
1165 asus_rfkill_hotplug(asus);
1166
1167exit:
1168 if (result && result != -ENODEV)
1169 asus_wmi_rfkill_exit(asus);
1170
1171 if (result == -ENODEV)
1172 result = 0;
1173
1174 return result;
1175}
1176
1177/* Quirks *********************************************************************/
1178
1179static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1180{
1181 struct pci_dev *xhci_pdev;
1182 u32 orig_ports_available;
1183 u32 ports_available = asus->driver->quirks->xusb2pr;
1184
1185 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1186 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1187 NULL);
1188
1189 if (!xhci_pdev)
1190 return;
1191
1192 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1193 &orig_ports_available);
1194
1195 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1196 cpu_to_le32(ports_available));
1197
1198 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1199 orig_ports_available, ports_available);
1200}
1201
1202/*
1203 * Some devices dont support or have borcken get_als method
1204 * but still support set method.
1205 */
1206static void asus_wmi_set_als(void)
1207{
1208 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1209}
1210
1211/* Hwmon device ***************************************************************/
1212
1213static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1214 int *speed)
1215{
1216 struct agfn_fan_args args = {
1217 .agfn.len = sizeof(args),
1218 .agfn.mfun = ASUS_FAN_MFUN,
1219 .agfn.sfun = ASUS_FAN_SFUN_READ,
1220 .fan = fan,
1221 .speed = 0,
1222 };
1223 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1224 int status;
1225
1226 if (fan != 1)
1227 return -EINVAL;
1228
1229 status = asus_wmi_evaluate_method_agfn(input);
1230
1231 if (status || args.agfn.err)
1232 return -ENXIO;
1233
1234 if (speed)
1235 *speed = args.speed;
1236
1237 return 0;
1238}
1239
1240static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1241 int *speed)
1242{
1243 struct agfn_fan_args args = {
1244 .agfn.len = sizeof(args),
1245 .agfn.mfun = ASUS_FAN_MFUN,
1246 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1247 .fan = fan,
1248 .speed = speed ? *speed : 0,
1249 };
1250 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1251 int status;
1252
1253 /* 1: for setting 1st fan's speed 0: setting auto mode */
1254 if (fan != 1 && fan != 0)
1255 return -EINVAL;
1256
1257 status = asus_wmi_evaluate_method_agfn(input);
1258
1259 if (status || args.agfn.err)
1260 return -ENXIO;
1261
1262 if (speed && fan == 1)
1263 asus->agfn_pwm = *speed;
1264
1265 return 0;
1266}
1267
1268/*
1269 * Check if we can read the speed of one fan. If true we assume we can also
1270 * control it.
1271 */
1272static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1273{
1274 int status;
1275 int speed;
1276 u32 value;
1277
1278 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1279 if (status != 0)
1280 return false;
1281
1282 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1283 if (status != 0)
1284 return false;
1285
1286 /*
1287 * We need to find a better way, probably using sfun,
1288 * bits or spec ...
1289 * Currently we disable it if:
1290 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1291 * - reverved bits are non-zero
1292 * - sfun and presence bit are not set
1293 */
1294 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1295 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1296}
1297
1298static int asus_fan_set_auto(struct asus_wmi *asus)
1299{
1300 int status;
1301 u32 retval;
1302
1303 switch (asus->fan_type) {
1304 case FAN_TYPE_SPEC83:
1305 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1306 0, &retval);
1307 if (status)
1308 return status;
1309
1310 if (retval != 1)
1311 return -EIO;
1312 break;
1313
1314 case FAN_TYPE_AGFN:
1315 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1316 if (status)
1317 return -ENXIO;
1318 break;
1319
1320 default:
1321 return -ENXIO;
1322 }
1323
1324
1325 return 0;
1326}
1327
1328static ssize_t pwm1_show(struct device *dev,
1329 struct device_attribute *attr,
1330 char *buf)
1331{
1332 struct asus_wmi *asus = dev_get_drvdata(dev);
1333 int err;
1334 int value;
1335
1336 /* If we already set a value then just return it */
1337 if (asus->agfn_pwm >= 0)
1338 return sprintf(buf, "%d\n", asus->agfn_pwm);
1339
1340 /*
1341 * If we haven't set already set a value through the AGFN interface,
1342 * we read a current value through the (now-deprecated) FAN_CTRL device.
1343 */
1344 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1345 if (err < 0)
1346 return err;
1347
1348 value &= 0xFF;
1349
1350 if (value == 1) /* Low Speed */
1351 value = 85;
1352 else if (value == 2)
1353 value = 170;
1354 else if (value == 3)
1355 value = 255;
1356 else if (value) {
1357 pr_err("Unknown fan speed %#x\n", value);
1358 value = -1;
1359 }
1360
1361 return sprintf(buf, "%d\n", value);
1362}
1363
1364static ssize_t pwm1_store(struct device *dev,
1365 struct device_attribute *attr,
1366 const char *buf, size_t count) {
1367 struct asus_wmi *asus = dev_get_drvdata(dev);
1368 int value;
1369 int state;
1370 int ret;
1371
1372 ret = kstrtouint(buf, 10, &value);
1373 if (ret)
1374 return ret;
1375
1376 value = clamp(value, 0, 255);
1377
1378 state = asus_agfn_fan_speed_write(asus, 1, &value);
1379 if (state)
1380 pr_warn("Setting fan speed failed: %d\n", state);
1381 else
1382 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1383
1384 return count;
1385}
1386
1387static ssize_t fan1_input_show(struct device *dev,
1388 struct device_attribute *attr,
1389 char *buf)
1390{
1391 struct asus_wmi *asus = dev_get_drvdata(dev);
1392 int value;
1393 int ret;
1394
1395 switch (asus->fan_type) {
1396 case FAN_TYPE_SPEC83:
1397 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1398 &value);
1399 if (ret < 0)
1400 return ret;
1401
1402 value &= 0xffff;
1403 break;
1404
1405 case FAN_TYPE_AGFN:
1406 /* no speed readable on manual mode */
1407 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1408 return -ENXIO;
1409
1410 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1411 if (ret) {
1412 pr_warn("reading fan speed failed: %d\n", ret);
1413 return -ENXIO;
1414 }
1415 break;
1416
1417 default:
1418 return -ENXIO;
1419 }
1420
1421 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1422}
1423
1424static ssize_t pwm1_enable_show(struct device *dev,
1425 struct device_attribute *attr,
1426 char *buf)
1427{
1428 struct asus_wmi *asus = dev_get_drvdata(dev);
1429
1430 /*
1431 * Just read back the cached pwm mode.
1432 *
1433 * For the CPU_FAN device, the spec indicates that we should be
1434 * able to read the device status and consult bit 19 to see if we
1435 * are in Full On or Automatic mode. However, this does not work
1436 * in practice on X532FL at least (the bit is always 0) and there's
1437 * also nothing in the DSDT to indicate that this behaviour exists.
1438 */
1439 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1440}
1441
1442static ssize_t pwm1_enable_store(struct device *dev,
1443 struct device_attribute *attr,
1444 const char *buf, size_t count)
1445{
1446 struct asus_wmi *asus = dev_get_drvdata(dev);
1447 int status = 0;
1448 int state;
1449 int value;
1450 int ret;
1451 u32 retval;
1452
1453 ret = kstrtouint(buf, 10, &state);
1454 if (ret)
1455 return ret;
1456
1457 if (asus->fan_type == FAN_TYPE_SPEC83) {
1458 switch (state) { /* standard documented hwmon values */
1459 case ASUS_FAN_CTRL_FULLSPEED:
1460 value = 1;
1461 break;
1462 case ASUS_FAN_CTRL_AUTO:
1463 value = 0;
1464 break;
1465 default:
1466 return -EINVAL;
1467 }
1468
1469 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1470 value, &retval);
1471 if (ret)
1472 return ret;
1473
1474 if (retval != 1)
1475 return -EIO;
1476 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1477 switch (state) {
1478 case ASUS_FAN_CTRL_MANUAL:
1479 break;
1480
1481 case ASUS_FAN_CTRL_AUTO:
1482 status = asus_fan_set_auto(asus);
1483 if (status)
1484 return status;
1485 break;
1486
1487 default:
1488 return -EINVAL;
1489 }
1490 }
1491
1492 asus->fan_pwm_mode = state;
1493 return count;
1494}
1495
1496static ssize_t fan1_label_show(struct device *dev,
1497 struct device_attribute *attr,
1498 char *buf)
1499{
1500 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1501}
1502
1503static ssize_t asus_hwmon_temp1(struct device *dev,
1504 struct device_attribute *attr,
1505 char *buf)
1506{
1507 struct asus_wmi *asus = dev_get_drvdata(dev);
1508 u32 value;
1509 int err;
1510
1511 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1512 if (err < 0)
1513 return err;
1514
1515 value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1516
1517 return sprintf(buf, "%d\n", value);
1518}
1519
1520/* Fan1 */
1521static DEVICE_ATTR_RW(pwm1);
1522static DEVICE_ATTR_RW(pwm1_enable);
1523static DEVICE_ATTR_RO(fan1_input);
1524static DEVICE_ATTR_RO(fan1_label);
1525
1526/* Temperature */
1527static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1528
1529static struct attribute *hwmon_attributes[] = {
1530 &dev_attr_pwm1.attr,
1531 &dev_attr_pwm1_enable.attr,
1532 &dev_attr_fan1_input.attr,
1533 &dev_attr_fan1_label.attr,
1534
1535 &dev_attr_temp1_input.attr,
1536 NULL
1537};
1538
1539static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1540 struct attribute *attr, int idx)
1541{
1542 struct device *dev = container_of(kobj, struct device, kobj);
1543 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1544 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1545
1546 if (attr == &dev_attr_pwm1.attr) {
1547 if (asus->fan_type != FAN_TYPE_AGFN)
1548 return 0;
1549 } else if (attr == &dev_attr_fan1_input.attr
1550 || attr == &dev_attr_fan1_label.attr
1551 || attr == &dev_attr_pwm1_enable.attr) {
1552 if (asus->fan_type == FAN_TYPE_NONE)
1553 return 0;
1554 } else if (attr == &dev_attr_temp1_input.attr) {
1555 int err = asus_wmi_get_devstate(asus,
1556 ASUS_WMI_DEVID_THERMAL_CTRL,
1557 &value);
1558
1559 if (err < 0)
1560 return 0; /* can't return negative here */
1561
1562 /*
1563 * If the temperature value in deci-Kelvin is near the absolute
1564 * zero temperature, something is clearly wrong
1565 */
1566 if (value == 0 || value == 1)
1567 return 0;
1568 }
1569
1570 return attr->mode;
1571}
1572
1573static const struct attribute_group hwmon_attribute_group = {
1574 .is_visible = asus_hwmon_sysfs_is_visible,
1575 .attrs = hwmon_attributes
1576};
1577__ATTRIBUTE_GROUPS(hwmon_attribute);
1578
1579static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1580{
1581 struct device *dev = &asus->platform_device->dev;
1582 struct device *hwmon;
1583
1584 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1585 hwmon_attribute_groups);
1586
1587 if (IS_ERR(hwmon)) {
1588 pr_err("Could not register asus hwmon device\n");
1589 return PTR_ERR(hwmon);
1590 }
1591 return 0;
1592}
1593
1594static int asus_wmi_fan_init(struct asus_wmi *asus)
1595{
1596 asus->fan_type = FAN_TYPE_NONE;
1597 asus->agfn_pwm = -1;
1598
1599 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1600 asus->fan_type = FAN_TYPE_SPEC83;
1601 else if (asus_wmi_has_agfn_fan(asus))
1602 asus->fan_type = FAN_TYPE_AGFN;
1603
1604 if (asus->fan_type == FAN_TYPE_NONE)
1605 return -ENODEV;
1606
1607 asus_fan_set_auto(asus);
1608 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1609 return 0;
1610}
1611
1612/* Fan mode *******************************************************************/
1613
1614static int fan_boost_mode_check_present(struct asus_wmi *asus)
1615{
1616 u32 result;
1617 int err;
1618
1619 asus->fan_boost_mode_available = false;
1620
1621 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1622 &result);
1623 if (err) {
1624 if (err == -ENODEV)
1625 return 0;
1626 else
1627 return err;
1628 }
1629
1630 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1631 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1632 asus->fan_boost_mode_available = true;
1633 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1634 }
1635
1636 return 0;
1637}
1638
1639static int fan_boost_mode_write(struct asus_wmi *asus)
1640{
1641 int err;
1642 u8 value;
1643 u32 retval;
1644
1645 value = asus->fan_boost_mode;
1646
1647 pr_info("Set fan boost mode: %u\n", value);
1648 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1649 &retval);
1650 if (err) {
1651 pr_warn("Failed to set fan boost mode: %d\n", err);
1652 return err;
1653 }
1654
1655 if (retval != 1) {
1656 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1657 retval);
1658 return -EIO;
1659 }
1660
1661 return 0;
1662}
1663
1664static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1665{
1666 u8 mask = asus->fan_boost_mode_mask;
1667
1668 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1669 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1670 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1671 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1672 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1673 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1674 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1675 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1676 else
1677 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1678 } else {
1679 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1680 }
1681
1682 return fan_boost_mode_write(asus);
1683}
1684
1685static ssize_t fan_boost_mode_show(struct device *dev,
1686 struct device_attribute *attr, char *buf)
1687{
1688 struct asus_wmi *asus = dev_get_drvdata(dev);
1689
1690 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1691}
1692
1693static ssize_t fan_boost_mode_store(struct device *dev,
1694 struct device_attribute *attr,
1695 const char *buf, size_t count)
1696{
1697 int result;
1698 u8 new_mode;
1699 struct asus_wmi *asus = dev_get_drvdata(dev);
1700 u8 mask = asus->fan_boost_mode_mask;
1701
1702 result = kstrtou8(buf, 10, &new_mode);
1703 if (result < 0) {
1704 pr_warn("Trying to store invalid value\n");
1705 return result;
1706 }
1707
1708 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1709 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1710 return -EINVAL;
1711 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1712 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1713 return -EINVAL;
1714 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1715 return -EINVAL;
1716 }
1717
1718 asus->fan_boost_mode = new_mode;
1719 fan_boost_mode_write(asus);
1720
1721 return result;
1722}
1723
1724// Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1725static DEVICE_ATTR_RW(fan_boost_mode);
1726
1727/* Backlight ******************************************************************/
1728
1729static int read_backlight_power(struct asus_wmi *asus)
1730{
1731 int ret;
1732
1733 if (asus->driver->quirks->store_backlight_power)
1734 ret = !asus->driver->panel_power;
1735 else
1736 ret = asus_wmi_get_devstate_simple(asus,
1737 ASUS_WMI_DEVID_BACKLIGHT);
1738
1739 if (ret < 0)
1740 return ret;
1741
1742 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1743}
1744
1745static int read_brightness_max(struct asus_wmi *asus)
1746{
1747 u32 retval;
1748 int err;
1749
1750 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1751 if (err < 0)
1752 return err;
1753
1754 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1755 retval >>= 8;
1756
1757 if (!retval)
1758 return -ENODEV;
1759
1760 return retval;
1761}
1762
1763static int read_brightness(struct backlight_device *bd)
1764{
1765 struct asus_wmi *asus = bl_get_data(bd);
1766 u32 retval;
1767 int err;
1768
1769 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1770 if (err < 0)
1771 return err;
1772
1773 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1774}
1775
1776static u32 get_scalar_command(struct backlight_device *bd)
1777{
1778 struct asus_wmi *asus = bl_get_data(bd);
1779 u32 ctrl_param = 0;
1780
1781 if ((asus->driver->brightness < bd->props.brightness) ||
1782 bd->props.brightness == bd->props.max_brightness)
1783 ctrl_param = 0x00008001;
1784 else if ((asus->driver->brightness > bd->props.brightness) ||
1785 bd->props.brightness == 0)
1786 ctrl_param = 0x00008000;
1787
1788 asus->driver->brightness = bd->props.brightness;
1789
1790 return ctrl_param;
1791}
1792
1793static int update_bl_status(struct backlight_device *bd)
1794{
1795 struct asus_wmi *asus = bl_get_data(bd);
1796 u32 ctrl_param;
1797 int power, err = 0;
1798
1799 power = read_backlight_power(asus);
1800 if (power != -ENODEV && bd->props.power != power) {
1801 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1802 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1803 ctrl_param, NULL);
1804 if (asus->driver->quirks->store_backlight_power)
1805 asus->driver->panel_power = bd->props.power;
1806
1807 /* When using scalar brightness, updating the brightness
1808 * will mess with the backlight power */
1809 if (asus->driver->quirks->scalar_panel_brightness)
1810 return err;
1811 }
1812
1813 if (asus->driver->quirks->scalar_panel_brightness)
1814 ctrl_param = get_scalar_command(bd);
1815 else
1816 ctrl_param = bd->props.brightness;
1817
1818 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1819 ctrl_param, NULL);
1820
1821 return err;
1822}
1823
1824static const struct backlight_ops asus_wmi_bl_ops = {
1825 .get_brightness = read_brightness,
1826 .update_status = update_bl_status,
1827};
1828
1829static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1830{
1831 struct backlight_device *bd = asus->backlight_device;
1832 int old = bd->props.brightness;
1833 int new = old;
1834
1835 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1836 new = code - NOTIFY_BRNUP_MIN + 1;
1837 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1838 new = code - NOTIFY_BRNDOWN_MIN;
1839
1840 bd->props.brightness = new;
1841 backlight_update_status(bd);
1842 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1843
1844 return old;
1845}
1846
1847static int asus_wmi_backlight_init(struct asus_wmi *asus)
1848{
1849 struct backlight_device *bd;
1850 struct backlight_properties props;
1851 int max;
1852 int power;
1853
1854 max = read_brightness_max(asus);
1855 if (max < 0)
1856 return max;
1857
1858 power = read_backlight_power(asus);
1859 if (power == -ENODEV)
1860 power = FB_BLANK_UNBLANK;
1861 else if (power < 0)
1862 return power;
1863
1864 memset(&props, 0, sizeof(struct backlight_properties));
1865 props.type = BACKLIGHT_PLATFORM;
1866 props.max_brightness = max;
1867 bd = backlight_device_register(asus->driver->name,
1868 &asus->platform_device->dev, asus,
1869 &asus_wmi_bl_ops, &props);
1870 if (IS_ERR(bd)) {
1871 pr_err("Could not register backlight device\n");
1872 return PTR_ERR(bd);
1873 }
1874
1875 asus->backlight_device = bd;
1876
1877 if (asus->driver->quirks->store_backlight_power)
1878 asus->driver->panel_power = power;
1879
1880 bd->props.brightness = read_brightness(bd);
1881 bd->props.power = power;
1882 backlight_update_status(bd);
1883
1884 asus->driver->brightness = bd->props.brightness;
1885
1886 return 0;
1887}
1888
1889static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1890{
1891 backlight_device_unregister(asus->backlight_device);
1892
1893 asus->backlight_device = NULL;
1894}
1895
1896static int is_display_toggle(int code)
1897{
1898 /* display toggle keys */
1899 if ((code >= 0x61 && code <= 0x67) ||
1900 (code >= 0x8c && code <= 0x93) ||
1901 (code >= 0xa0 && code <= 0xa7) ||
1902 (code >= 0xd0 && code <= 0xd5))
1903 return 1;
1904
1905 return 0;
1906}
1907
1908/* Fn-lock ********************************************************************/
1909
1910static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
1911{
1912 u32 result;
1913
1914 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
1915
1916 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1917 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
1918}
1919
1920static void asus_wmi_fnlock_update(struct asus_wmi *asus)
1921{
1922 int mode = asus->fnlock_locked;
1923
1924 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
1925}
1926
1927/* WMI events *****************************************************************/
1928
1929static int asus_wmi_get_event_code(u32 value)
1930{
1931 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1932 union acpi_object *obj;
1933 acpi_status status;
1934 int code;
1935
1936 status = wmi_get_event_data(value, &response);
1937 if (ACPI_FAILURE(status)) {
1938 pr_warn("Failed to get WMI notify code: %s\n",
1939 acpi_format_exception(status));
1940 return -EIO;
1941 }
1942
1943 obj = (union acpi_object *)response.pointer;
1944
1945 if (obj && obj->type == ACPI_TYPE_INTEGER)
1946 code = (int)(obj->integer.value & WMI_EVENT_MASK);
1947 else
1948 code = -EIO;
1949
1950 kfree(obj);
1951 return code;
1952}
1953
1954static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
1955{
1956 int orig_code;
1957 unsigned int key_value = 1;
1958 bool autorelease = 1;
1959
1960 orig_code = code;
1961
1962 if (asus->driver->key_filter) {
1963 asus->driver->key_filter(asus->driver, &code, &key_value,
1964 &autorelease);
1965 if (code == ASUS_WMI_KEY_IGNORE)
1966 return;
1967 }
1968
1969 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1970 code = ASUS_WMI_BRN_UP;
1971 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1972 code = ASUS_WMI_BRN_DOWN;
1973
1974 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
1975 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1976 asus_wmi_backlight_notify(asus, orig_code);
1977 return;
1978 }
1979 }
1980
1981 if (code == NOTIFY_KBD_BRTUP) {
1982 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1983 return;
1984 }
1985 if (code == NOTIFY_KBD_BRTDWN) {
1986 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
1987 return;
1988 }
1989 if (code == NOTIFY_KBD_BRTTOGGLE) {
1990 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
1991 kbd_led_set_by_kbd(asus, 0);
1992 else
1993 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
1994 return;
1995 }
1996
1997 if (code == NOTIFY_FNLOCK_TOGGLE) {
1998 asus->fnlock_locked = !asus->fnlock_locked;
1999 asus_wmi_fnlock_update(asus);
2000 return;
2001 }
2002
2003 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2004 fan_boost_mode_switch_next(asus);
2005 return;
2006 }
2007
2008 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2009 return;
2010
2011 if (!sparse_keymap_report_event(asus->inputdev, code,
2012 key_value, autorelease))
2013 pr_info("Unknown key %x pressed\n", code);
2014}
2015
2016static void asus_wmi_notify(u32 value, void *context)
2017{
2018 struct asus_wmi *asus = context;
2019 int code;
2020 int i;
2021
2022 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2023 code = asus_wmi_get_event_code(value);
2024 if (code < 0) {
2025 pr_warn("Failed to get notify code: %d\n", code);
2026 return;
2027 }
2028
2029 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2030 return;
2031
2032 asus_wmi_handle_event_code(code, asus);
2033
2034 /*
2035 * Double check that queue is present:
2036 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2037 */
2038 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2039 return;
2040 }
2041
2042 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2043}
2044
2045static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2046{
2047 int code;
2048 int i;
2049
2050 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2051 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2052 if (code < 0) {
2053 pr_warn("Failed to get event during flush: %d\n", code);
2054 return code;
2055 }
2056
2057 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2058 return 0;
2059 }
2060
2061 pr_warn("Failed to flush event queue\n");
2062 return -EIO;
2063}
2064
2065/* Sysfs **********************************************************************/
2066
2067static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2068 const char *buf, size_t count)
2069{
2070 u32 retval;
2071 int err, value;
2072
2073 value = asus_wmi_get_devstate_simple(asus, devid);
2074 if (value < 0)
2075 return value;
2076
2077 err = kstrtoint(buf, 0, &value);
2078 if (err)
2079 return err;
2080
2081 err = asus_wmi_set_devstate(devid, value, &retval);
2082 if (err < 0)
2083 return err;
2084
2085 return count;
2086}
2087
2088static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2089{
2090 int value = asus_wmi_get_devstate_simple(asus, devid);
2091
2092 if (value < 0)
2093 return value;
2094
2095 return sprintf(buf, "%d\n", value);
2096}
2097
2098#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2099 static ssize_t show_##_name(struct device *dev, \
2100 struct device_attribute *attr, \
2101 char *buf) \
2102 { \
2103 struct asus_wmi *asus = dev_get_drvdata(dev); \
2104 \
2105 return show_sys_wmi(asus, _cm, buf); \
2106 } \
2107 static ssize_t store_##_name(struct device *dev, \
2108 struct device_attribute *attr, \
2109 const char *buf, size_t count) \
2110 { \
2111 struct asus_wmi *asus = dev_get_drvdata(dev); \
2112 \
2113 return store_sys_wmi(asus, _cm, buf, count); \
2114 } \
2115 static struct device_attribute dev_attr_##_name = { \
2116 .attr = { \
2117 .name = __stringify(_name), \
2118 .mode = _mode }, \
2119 .show = show_##_name, \
2120 .store = store_##_name, \
2121 }
2122
2123ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2124ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2125ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2126ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2127ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2128
2129static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2130 const char *buf, size_t count)
2131{
2132 int value, rv;
2133
2134 rv = kstrtoint(buf, 0, &value);
2135 if (rv)
2136 return rv;
2137
2138 if (value < 0 || value > 2)
2139 return -EINVAL;
2140
2141 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2142 if (rv < 0)
2143 return rv;
2144
2145 return count;
2146}
2147
2148static DEVICE_ATTR_WO(cpufv);
2149
2150static struct attribute *platform_attributes[] = {
2151 &dev_attr_cpufv.attr,
2152 &dev_attr_camera.attr,
2153 &dev_attr_cardr.attr,
2154 &dev_attr_touchpad.attr,
2155 &dev_attr_lid_resume.attr,
2156 &dev_attr_als_enable.attr,
2157 &dev_attr_fan_boost_mode.attr,
2158 NULL
2159};
2160
2161static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2162 struct attribute *attr, int idx)
2163{
2164 struct device *dev = container_of(kobj, struct device, kobj);
2165 struct asus_wmi *asus = dev_get_drvdata(dev);
2166 bool ok = true;
2167 int devid = -1;
2168
2169 if (attr == &dev_attr_camera.attr)
2170 devid = ASUS_WMI_DEVID_CAMERA;
2171 else if (attr == &dev_attr_cardr.attr)
2172 devid = ASUS_WMI_DEVID_CARDREADER;
2173 else if (attr == &dev_attr_touchpad.attr)
2174 devid = ASUS_WMI_DEVID_TOUCHPAD;
2175 else if (attr == &dev_attr_lid_resume.attr)
2176 devid = ASUS_WMI_DEVID_LID_RESUME;
2177 else if (attr == &dev_attr_als_enable.attr)
2178 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2179 else if (attr == &dev_attr_fan_boost_mode.attr)
2180 ok = asus->fan_boost_mode_available;
2181
2182 if (devid != -1)
2183 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2184
2185 return ok ? attr->mode : 0;
2186}
2187
2188static const struct attribute_group platform_attribute_group = {
2189 .is_visible = asus_sysfs_is_visible,
2190 .attrs = platform_attributes
2191};
2192
2193static void asus_wmi_sysfs_exit(struct platform_device *device)
2194{
2195 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2196}
2197
2198static int asus_wmi_sysfs_init(struct platform_device *device)
2199{
2200 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2201}
2202
2203/* Platform device ************************************************************/
2204
2205static int asus_wmi_platform_init(struct asus_wmi *asus)
2206{
2207 struct device *dev = &asus->platform_device->dev;
2208 char *wmi_uid;
2209 int rv;
2210
2211 /* INIT enable hotkeys on some models */
2212 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2213 pr_info("Initialization: %#x\n", rv);
2214
2215 /* We don't know yet what to do with this version... */
2216 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2217 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2218 asus->spec = rv;
2219 }
2220
2221 /*
2222 * The SFUN method probably allows the original driver to get the list
2223 * of features supported by a given model. For now, 0x0100 or 0x0800
2224 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2225 * The significance of others is yet to be found.
2226 */
2227 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2228 pr_info("SFUN value: %#x\n", rv);
2229 asus->sfun = rv;
2230 }
2231
2232 /*
2233 * Eee PC and Notebooks seems to have different method_id for DSTS,
2234 * but it may also be related to the BIOS's SPEC.
2235 * Note, on most Eeepc, there is no way to check if a method exist
2236 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2237 * but once again, SPEC may probably be used for that kind of things.
2238 *
2239 * Additionally at least TUF Gaming series laptops return nothing for
2240 * unknown methods, so the detection in this way is not possible.
2241 *
2242 * There is strong indication that only ACPI WMI devices that have _UID
2243 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2244 */
2245 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2246 if (!wmi_uid)
2247 return -ENODEV;
2248
2249 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2250 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2251 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2252 } else {
2253 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2254 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2255 }
2256
2257 /*
2258 * Some devices can have multiple event codes stored in a queue before
2259 * the module load if it was unloaded intermittently after calling
2260 * the INIT method (enables event handling). The WMI notify handler is
2261 * expected to retrieve all event codes until a retrieved code equals
2262 * queue end marker (One or Ones). Old codes are flushed from the queue
2263 * upon module load. Not enabling this when it should be has minimal
2264 * visible impact so fall back if anything goes wrong.
2265 */
2266 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2267 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2268 dev_info(dev, "Detected ATK, enable event queue\n");
2269
2270 if (!asus_wmi_notify_queue_flush(asus))
2271 asus->wmi_event_queue = true;
2272 }
2273
2274 /* CWAP allow to define the behavior of the Fn+F2 key,
2275 * this method doesn't seems to be present on Eee PCs */
2276 if (asus->driver->quirks->wapf >= 0)
2277 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2278 asus->driver->quirks->wapf, NULL);
2279
2280 return 0;
2281}
2282
2283/* debugfs ********************************************************************/
2284
2285struct asus_wmi_debugfs_node {
2286 struct asus_wmi *asus;
2287 char *name;
2288 int (*show) (struct seq_file *m, void *data);
2289};
2290
2291static int show_dsts(struct seq_file *m, void *data)
2292{
2293 struct asus_wmi *asus = m->private;
2294 int err;
2295 u32 retval = -1;
2296
2297 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2298 if (err < 0)
2299 return err;
2300
2301 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2302
2303 return 0;
2304}
2305
2306static int show_devs(struct seq_file *m, void *data)
2307{
2308 struct asus_wmi *asus = m->private;
2309 int err;
2310 u32 retval = -1;
2311
2312 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2313 &retval);
2314 if (err < 0)
2315 return err;
2316
2317 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2318 asus->debug.ctrl_param, retval);
2319
2320 return 0;
2321}
2322
2323static int show_call(struct seq_file *m, void *data)
2324{
2325 struct asus_wmi *asus = m->private;
2326 struct bios_args args = {
2327 .arg0 = asus->debug.dev_id,
2328 .arg1 = asus->debug.ctrl_param,
2329 };
2330 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2331 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2332 union acpi_object *obj;
2333 acpi_status status;
2334
2335 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2336 0, asus->debug.method_id,
2337 &input, &output);
2338
2339 if (ACPI_FAILURE(status))
2340 return -EIO;
2341
2342 obj = (union acpi_object *)output.pointer;
2343 if (obj && obj->type == ACPI_TYPE_INTEGER)
2344 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2345 asus->debug.dev_id, asus->debug.ctrl_param,
2346 (u32) obj->integer.value);
2347 else
2348 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2349 asus->debug.dev_id, asus->debug.ctrl_param,
2350 obj ? obj->type : -1);
2351
2352 kfree(obj);
2353
2354 return 0;
2355}
2356
2357static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2358 {NULL, "devs", show_devs},
2359 {NULL, "dsts", show_dsts},
2360 {NULL, "call", show_call},
2361};
2362
2363static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2364{
2365 struct asus_wmi_debugfs_node *node = inode->i_private;
2366
2367 return single_open(file, node->show, node->asus);
2368}
2369
2370static const struct file_operations asus_wmi_debugfs_io_ops = {
2371 .owner = THIS_MODULE,
2372 .open = asus_wmi_debugfs_open,
2373 .read = seq_read,
2374 .llseek = seq_lseek,
2375 .release = single_release,
2376};
2377
2378static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2379{
2380 debugfs_remove_recursive(asus->debug.root);
2381}
2382
2383static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2384{
2385 int i;
2386
2387 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2388
2389 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2390 &asus->debug.method_id);
2391
2392 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2393 &asus->debug.dev_id);
2394
2395 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2396 &asus->debug.ctrl_param);
2397
2398 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2399 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2400
2401 node->asus = asus;
2402 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2403 asus->debug.root, node,
2404 &asus_wmi_debugfs_io_ops);
2405 }
2406}
2407
2408/* Init / exit ****************************************************************/
2409
2410static int asus_wmi_add(struct platform_device *pdev)
2411{
2412 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2413 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2414 struct asus_wmi *asus;
2415 const char *chassis_type;
2416 acpi_status status;
2417 int err;
2418 u32 result;
2419
2420 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2421 if (!asus)
2422 return -ENOMEM;
2423
2424 asus->driver = wdrv;
2425 asus->platform_device = pdev;
2426 wdrv->platform_device = pdev;
2427 platform_set_drvdata(asus->platform_device, asus);
2428
2429 if (wdrv->detect_quirks)
2430 wdrv->detect_quirks(asus->driver);
2431
2432 err = asus_wmi_platform_init(asus);
2433 if (err)
2434 goto fail_platform;
2435
2436 err = fan_boost_mode_check_present(asus);
2437 if (err)
2438 goto fail_fan_boost_mode;
2439
2440 err = asus_wmi_sysfs_init(asus->platform_device);
2441 if (err)
2442 goto fail_sysfs;
2443
2444 err = asus_wmi_input_init(asus);
2445 if (err)
2446 goto fail_input;
2447
2448 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2449
2450 err = asus_wmi_hwmon_init(asus);
2451 if (err)
2452 goto fail_hwmon;
2453
2454 err = asus_wmi_led_init(asus);
2455 if (err)
2456 goto fail_leds;
2457
2458 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2459 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2460 asus->driver->wlan_ctrl_by_user = 1;
2461
2462 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2463 err = asus_wmi_rfkill_init(asus);
2464 if (err)
2465 goto fail_rfkill;
2466 }
2467
2468 if (asus->driver->quirks->wmi_force_als_set)
2469 asus_wmi_set_als();
2470
2471 /* Some Asus desktop boards export an acpi-video backlight interface,
2472 stop this from showing up */
2473 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2474 if (chassis_type && !strcmp(chassis_type, "3"))
2475 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2476
2477 if (asus->driver->quirks->wmi_backlight_power)
2478 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2479
2480 if (asus->driver->quirks->wmi_backlight_native)
2481 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2482
2483 if (asus->driver->quirks->xusb2pr)
2484 asus_wmi_set_xusb2pr(asus);
2485
2486 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2487 err = asus_wmi_backlight_init(asus);
2488 if (err && err != -ENODEV)
2489 goto fail_backlight;
2490 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2491 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2492
2493 if (asus_wmi_has_fnlock_key(asus)) {
2494 asus->fnlock_locked = true;
2495 asus_wmi_fnlock_update(asus);
2496 }
2497
2498 status = wmi_install_notify_handler(asus->driver->event_guid,
2499 asus_wmi_notify, asus);
2500 if (ACPI_FAILURE(status)) {
2501 pr_err("Unable to register notify handler - %d\n", status);
2502 err = -ENODEV;
2503 goto fail_wmi_handler;
2504 }
2505
2506 asus_wmi_battery_init(asus);
2507
2508 asus_wmi_debugfs_init(asus);
2509
2510 return 0;
2511
2512fail_wmi_handler:
2513 asus_wmi_backlight_exit(asus);
2514fail_backlight:
2515 asus_wmi_rfkill_exit(asus);
2516fail_rfkill:
2517 asus_wmi_led_exit(asus);
2518fail_leds:
2519fail_hwmon:
2520 asus_wmi_input_exit(asus);
2521fail_input:
2522 asus_wmi_sysfs_exit(asus->platform_device);
2523fail_sysfs:
2524fail_fan_boost_mode:
2525fail_platform:
2526 kfree(asus);
2527 return err;
2528}
2529
2530static int asus_wmi_remove(struct platform_device *device)
2531{
2532 struct asus_wmi *asus;
2533
2534 asus = platform_get_drvdata(device);
2535 wmi_remove_notify_handler(asus->driver->event_guid);
2536 asus_wmi_backlight_exit(asus);
2537 asus_wmi_input_exit(asus);
2538 asus_wmi_led_exit(asus);
2539 asus_wmi_rfkill_exit(asus);
2540 asus_wmi_debugfs_exit(asus);
2541 asus_wmi_sysfs_exit(asus->platform_device);
2542 asus_fan_set_auto(asus);
2543 asus_wmi_battery_exit(asus);
2544
2545 kfree(asus);
2546 return 0;
2547}
2548
2549/* Platform driver - hibernate/resume callbacks *******************************/
2550
2551static int asus_hotk_thaw(struct device *device)
2552{
2553 struct asus_wmi *asus = dev_get_drvdata(device);
2554
2555 if (asus->wlan.rfkill) {
2556 bool wlan;
2557
2558 /*
2559 * Work around bios bug - acpi _PTS turns off the wireless led
2560 * during suspend. Normally it restores it on resume, but
2561 * we should kick it ourselves in case hibernation is aborted.
2562 */
2563 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2564 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2565 }
2566
2567 return 0;
2568}
2569
2570static int asus_hotk_resume(struct device *device)
2571{
2572 struct asus_wmi *asus = dev_get_drvdata(device);
2573
2574 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2575 kbd_led_update(asus);
2576
2577 if (asus_wmi_has_fnlock_key(asus))
2578 asus_wmi_fnlock_update(asus);
2579 return 0;
2580}
2581
2582static int asus_hotk_restore(struct device *device)
2583{
2584 struct asus_wmi *asus = dev_get_drvdata(device);
2585 int bl;
2586
2587 /* Refresh both wlan rfkill state and pci hotplug */
2588 if (asus->wlan.rfkill)
2589 asus_rfkill_hotplug(asus);
2590
2591 if (asus->bluetooth.rfkill) {
2592 bl = !asus_wmi_get_devstate_simple(asus,
2593 ASUS_WMI_DEVID_BLUETOOTH);
2594 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2595 }
2596 if (asus->wimax.rfkill) {
2597 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2598 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2599 }
2600 if (asus->wwan3g.rfkill) {
2601 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2602 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2603 }
2604 if (asus->gps.rfkill) {
2605 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2606 rfkill_set_sw_state(asus->gps.rfkill, bl);
2607 }
2608 if (asus->uwb.rfkill) {
2609 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2610 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2611 }
2612 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2613 kbd_led_update(asus);
2614
2615 if (asus_wmi_has_fnlock_key(asus))
2616 asus_wmi_fnlock_update(asus);
2617 return 0;
2618}
2619
2620static const struct dev_pm_ops asus_pm_ops = {
2621 .thaw = asus_hotk_thaw,
2622 .restore = asus_hotk_restore,
2623 .resume = asus_hotk_resume,
2624};
2625
2626/* Registration ***************************************************************/
2627
2628static int asus_wmi_probe(struct platform_device *pdev)
2629{
2630 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2631 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2632 int ret;
2633
2634 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2635 pr_warn("ASUS Management GUID not found\n");
2636 return -ENODEV;
2637 }
2638
2639 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2640 pr_warn("ASUS Event GUID not found\n");
2641 return -ENODEV;
2642 }
2643
2644 if (wdrv->probe) {
2645 ret = wdrv->probe(pdev);
2646 if (ret)
2647 return ret;
2648 }
2649
2650 return asus_wmi_add(pdev);
2651}
2652
2653static bool used;
2654
2655int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2656{
2657 struct platform_driver *platform_driver;
2658 struct platform_device *platform_device;
2659
2660 if (used)
2661 return -EBUSY;
2662
2663 platform_driver = &driver->platform_driver;
2664 platform_driver->remove = asus_wmi_remove;
2665 platform_driver->driver.owner = driver->owner;
2666 platform_driver->driver.name = driver->name;
2667 platform_driver->driver.pm = &asus_pm_ops;
2668
2669 platform_device = platform_create_bundle(platform_driver,
2670 asus_wmi_probe,
2671 NULL, 0, NULL, 0);
2672 if (IS_ERR(platform_device))
2673 return PTR_ERR(platform_device);
2674
2675 used = true;
2676 return 0;
2677}
2678EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2679
2680void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2681{
2682 platform_device_unregister(driver->platform_device);
2683 platform_driver_unregister(&driver->platform_driver);
2684 used = false;
2685}
2686EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2687
2688static int __init asus_wmi_init(void)
2689{
2690 pr_info("ASUS WMI generic driver loaded\n");
2691 return 0;
2692}
2693
2694static void __exit asus_wmi_exit(void)
2695{
2696 pr_info("ASUS WMI generic driver unloaded\n");
2697}
2698
2699module_init(asus_wmi_init);
2700module_exit(asus_wmi_exit);