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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/acpi.h>
37#include <linux/dmi.h>
38#include <linux/units.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
50static bool fnlock_default = true;
51module_param(fnlock_default, bool, 0444);
52
53#define to_asus_wmi_driver(pdrv) \
54 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
55
56#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
57
58#define NOTIFY_BRNUP_MIN 0x11
59#define NOTIFY_BRNUP_MAX 0x1f
60#define NOTIFY_BRNDOWN_MIN 0x20
61#define NOTIFY_BRNDOWN_MAX 0x2e
62#define NOTIFY_FNLOCK_TOGGLE 0x4e
63#define NOTIFY_KBD_DOCK_CHANGE 0x75
64#define NOTIFY_KBD_BRTUP 0xc4
65#define NOTIFY_KBD_BRTDWN 0xc5
66#define NOTIFY_KBD_BRTTOGGLE 0xc7
67#define NOTIFY_KBD_FBM 0x99
68#define NOTIFY_KBD_TTP 0xae
69#define NOTIFY_LID_FLIP 0xfa
70
71#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
72
73#define ASUS_FAN_DESC "cpu_fan"
74#define ASUS_FAN_MFUN 0x13
75#define ASUS_FAN_SFUN_READ 0x06
76#define ASUS_FAN_SFUN_WRITE 0x07
77
78/* Based on standard hwmon pwmX_enable values */
79#define ASUS_FAN_CTRL_FULLSPEED 0
80#define ASUS_FAN_CTRL_MANUAL 1
81#define ASUS_FAN_CTRL_AUTO 2
82
83#define ASUS_FAN_BOOST_MODE_NORMAL 0
84#define ASUS_FAN_BOOST_MODE_OVERBOOST 1
85#define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
86#define ASUS_FAN_BOOST_MODE_SILENT 2
87#define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
88#define ASUS_FAN_BOOST_MODES_MASK 0x03
89
90#define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0
91#define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
92#define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
93
94#define USB_INTEL_XUSB2PR 0xD0
95#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
96
97#define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
98#define ASUS_ACPI_UID_ATK "ATK"
99
100#define WMI_EVENT_QUEUE_SIZE 0x10
101#define WMI_EVENT_QUEUE_END 0x1
102#define WMI_EVENT_MASK 0xFFFF
103/* The WMI hotkey event value is always the same. */
104#define WMI_EVENT_VALUE_ATK 0xFF
105
106#define WMI_EVENT_MASK 0xFFFF
107
108static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
109
110static bool ashs_present(void)
111{
112 int i = 0;
113 while (ashs_ids[i]) {
114 if (acpi_dev_found(ashs_ids[i++]))
115 return true;
116 }
117 return false;
118}
119
120struct bios_args {
121 u32 arg0;
122 u32 arg1;
123 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
124 u32 arg4;
125 u32 arg5;
126} __packed;
127
128/*
129 * Struct that's used for all methods called via AGFN. Naming is
130 * identically to the AML code.
131 */
132struct agfn_args {
133 u16 mfun; /* probably "Multi-function" to be called */
134 u16 sfun; /* probably "Sub-function" to be called */
135 u16 len; /* size of the hole struct, including subfunction fields */
136 u8 stas; /* not used by now */
137 u8 err; /* zero on success */
138} __packed;
139
140/* struct used for calling fan read and write methods */
141struct agfn_fan_args {
142 struct agfn_args agfn; /* common fields */
143 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
144 u32 speed; /* read: RPM/100 - write: 0-255 */
145} __packed;
146
147/*
148 * <platform>/ - debugfs root directory
149 * dev_id - current dev_id
150 * ctrl_param - current ctrl_param
151 * method_id - current method_id
152 * devs - call DEVS(dev_id, ctrl_param) and print result
153 * dsts - call DSTS(dev_id) and print result
154 * call - call method_id(dev_id, ctrl_param) and print result
155 */
156struct asus_wmi_debug {
157 struct dentry *root;
158 u32 method_id;
159 u32 dev_id;
160 u32 ctrl_param;
161};
162
163struct asus_rfkill {
164 struct asus_wmi *asus;
165 struct rfkill *rfkill;
166 u32 dev_id;
167};
168
169enum fan_type {
170 FAN_TYPE_NONE = 0,
171 FAN_TYPE_AGFN, /* deprecated on newer platforms */
172 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
173};
174
175struct asus_wmi {
176 int dsts_id;
177 int spec;
178 int sfun;
179 bool wmi_event_queue;
180
181 struct input_dev *inputdev;
182 struct backlight_device *backlight_device;
183 struct platform_device *platform_device;
184
185 struct led_classdev wlan_led;
186 int wlan_led_wk;
187 struct led_classdev tpd_led;
188 int tpd_led_wk;
189 struct led_classdev kbd_led;
190 int kbd_led_wk;
191 struct led_classdev lightbar_led;
192 int lightbar_led_wk;
193 struct workqueue_struct *led_workqueue;
194 struct work_struct tpd_led_work;
195 struct work_struct wlan_led_work;
196 struct work_struct lightbar_led_work;
197
198 struct asus_rfkill wlan;
199 struct asus_rfkill bluetooth;
200 struct asus_rfkill wimax;
201 struct asus_rfkill wwan3g;
202 struct asus_rfkill gps;
203 struct asus_rfkill uwb;
204
205 enum fan_type fan_type;
206 int fan_pwm_mode;
207 int agfn_pwm;
208
209 bool fan_boost_mode_available;
210 u8 fan_boost_mode_mask;
211 u8 fan_boost_mode;
212
213 bool throttle_thermal_policy_available;
214 u8 throttle_thermal_policy_mode;
215
216 // The RSOC controls the maximum charging percentage.
217 bool battery_rsoc_available;
218
219 struct hotplug_slot hotplug_slot;
220 struct mutex hotplug_lock;
221 struct mutex wmi_lock;
222 struct workqueue_struct *hotplug_workqueue;
223 struct work_struct hotplug_work;
224
225 bool fnlock_locked;
226
227 struct asus_wmi_debug debug;
228
229 struct asus_wmi_driver *driver;
230};
231
232/* WMI ************************************************************************/
233
234static int asus_wmi_evaluate_method3(u32 method_id,
235 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
236{
237 struct bios_args args = {
238 .arg0 = arg0,
239 .arg1 = arg1,
240 .arg2 = arg2,
241 };
242 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
243 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
244 acpi_status status;
245 union acpi_object *obj;
246 u32 tmp = 0;
247
248 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
249 &input, &output);
250
251 if (ACPI_FAILURE(status))
252 return -EIO;
253
254 obj = (union acpi_object *)output.pointer;
255 if (obj && obj->type == ACPI_TYPE_INTEGER)
256 tmp = (u32) obj->integer.value;
257
258 if (retval)
259 *retval = tmp;
260
261 kfree(obj);
262
263 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
264 return -ENODEV;
265
266 return 0;
267}
268
269int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
270{
271 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
272}
273EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
274
275static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
276{
277 struct acpi_buffer input;
278 u64 phys_addr;
279 u32 retval;
280 u32 status;
281
282 /*
283 * Copy to dma capable address otherwise memory corruption occurs as
284 * bios has to be able to access it.
285 */
286 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
287 input.length = args.length;
288 if (!input.pointer)
289 return -ENOMEM;
290 phys_addr = virt_to_phys(input.pointer);
291
292 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
293 phys_addr, 0, &retval);
294 if (!status)
295 memcpy(args.pointer, input.pointer, args.length);
296
297 kfree(input.pointer);
298 if (status)
299 return -ENXIO;
300
301 return retval;
302}
303
304static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
305{
306 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
307}
308
309static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
310 u32 *retval)
311{
312 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
313 ctrl_param, retval);
314}
315
316/* Helper for special devices with magic return codes */
317static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
318 u32 dev_id, u32 mask)
319{
320 u32 retval = 0;
321 int err;
322
323 err = asus_wmi_get_devstate(asus, dev_id, &retval);
324 if (err < 0)
325 return err;
326
327 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
328 return -ENODEV;
329
330 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
331 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
332 return -ENODEV;
333 }
334
335 return retval & mask;
336}
337
338static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
339{
340 return asus_wmi_get_devstate_bits(asus, dev_id,
341 ASUS_WMI_DSTS_STATUS_BIT);
342}
343
344static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
345{
346 u32 retval;
347 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
348
349 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
350}
351
352/* Input **********************************************************************/
353
354static int asus_wmi_input_init(struct asus_wmi *asus)
355{
356 int err, result;
357
358 asus->inputdev = input_allocate_device();
359 if (!asus->inputdev)
360 return -ENOMEM;
361
362 asus->inputdev->name = asus->driver->input_name;
363 asus->inputdev->phys = asus->driver->input_phys;
364 asus->inputdev->id.bustype = BUS_HOST;
365 asus->inputdev->dev.parent = &asus->platform_device->dev;
366 set_bit(EV_REP, asus->inputdev->evbit);
367
368 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
369 if (err)
370 goto err_free_dev;
371
372 if (asus->driver->quirks->use_kbd_dock_devid) {
373 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
374 if (result >= 0) {
375 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
376 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
377 } else if (result != -ENODEV) {
378 pr_err("Error checking for keyboard-dock: %d\n", result);
379 }
380 }
381
382 if (asus->driver->quirks->use_lid_flip_devid) {
383 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
384 if (result < 0)
385 asus->driver->quirks->use_lid_flip_devid = 0;
386 if (result >= 0) {
387 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
388 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
389 } else if (result == -ENODEV) {
390 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug.");
391 } else {
392 pr_err("Error checking for lid-flip: %d\n", result);
393 }
394 }
395
396 err = input_register_device(asus->inputdev);
397 if (err)
398 goto err_free_dev;
399
400 return 0;
401
402err_free_dev:
403 input_free_device(asus->inputdev);
404 return err;
405}
406
407static void asus_wmi_input_exit(struct asus_wmi *asus)
408{
409 if (asus->inputdev)
410 input_unregister_device(asus->inputdev);
411
412 asus->inputdev = NULL;
413}
414
415/* Tablet mode ****************************************************************/
416
417static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus)
418{
419 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
420
421 if (result >= 0) {
422 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
423 input_sync(asus->inputdev);
424 }
425}
426
427/* Battery ********************************************************************/
428
429/* The battery maximum charging percentage */
430static int charge_end_threshold;
431
432static ssize_t charge_control_end_threshold_store(struct device *dev,
433 struct device_attribute *attr,
434 const char *buf, size_t count)
435{
436 int value, ret, rv;
437
438 ret = kstrtouint(buf, 10, &value);
439 if (ret)
440 return ret;
441
442 if (value < 0 || value > 100)
443 return -EINVAL;
444
445 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
446 if (ret)
447 return ret;
448
449 if (rv != 1)
450 return -EIO;
451
452 /* There isn't any method in the DSDT to read the threshold, so we
453 * save the threshold.
454 */
455 charge_end_threshold = value;
456 return count;
457}
458
459static ssize_t charge_control_end_threshold_show(struct device *device,
460 struct device_attribute *attr,
461 char *buf)
462{
463 return sprintf(buf, "%d\n", charge_end_threshold);
464}
465
466static DEVICE_ATTR_RW(charge_control_end_threshold);
467
468static int asus_wmi_battery_add(struct power_supply *battery)
469{
470 /* The WMI method does not provide a way to specific a battery, so we
471 * just assume it is the first battery.
472 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
473 * battery is named BATT.
474 */
475 if (strcmp(battery->desc->name, "BAT0") != 0 &&
476 strcmp(battery->desc->name, "BAT1") != 0 &&
477 strcmp(battery->desc->name, "BATC") != 0 &&
478 strcmp(battery->desc->name, "BATT") != 0)
479 return -ENODEV;
480
481 if (device_create_file(&battery->dev,
482 &dev_attr_charge_control_end_threshold))
483 return -ENODEV;
484
485 /* The charge threshold is only reset when the system is power cycled,
486 * and we can't get the current threshold so let set it to 100% when
487 * a battery is added.
488 */
489 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
490 charge_end_threshold = 100;
491
492 return 0;
493}
494
495static int asus_wmi_battery_remove(struct power_supply *battery)
496{
497 device_remove_file(&battery->dev,
498 &dev_attr_charge_control_end_threshold);
499 return 0;
500}
501
502static struct acpi_battery_hook battery_hook = {
503 .add_battery = asus_wmi_battery_add,
504 .remove_battery = asus_wmi_battery_remove,
505 .name = "ASUS Battery Extension",
506};
507
508static void asus_wmi_battery_init(struct asus_wmi *asus)
509{
510 asus->battery_rsoc_available = false;
511 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
512 asus->battery_rsoc_available = true;
513 battery_hook_register(&battery_hook);
514 }
515}
516
517static void asus_wmi_battery_exit(struct asus_wmi *asus)
518{
519 if (asus->battery_rsoc_available)
520 battery_hook_unregister(&battery_hook);
521}
522
523/* LEDs ***********************************************************************/
524
525/*
526 * These functions actually update the LED's, and are called from a
527 * workqueue. By doing this as separate work rather than when the LED
528 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
529 * potentially bad time, such as a timer interrupt.
530 */
531static void tpd_led_update(struct work_struct *work)
532{
533 int ctrl_param;
534 struct asus_wmi *asus;
535
536 asus = container_of(work, struct asus_wmi, tpd_led_work);
537
538 ctrl_param = asus->tpd_led_wk;
539 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
540}
541
542static void tpd_led_set(struct led_classdev *led_cdev,
543 enum led_brightness value)
544{
545 struct asus_wmi *asus;
546
547 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
548
549 asus->tpd_led_wk = !!value;
550 queue_work(asus->led_workqueue, &asus->tpd_led_work);
551}
552
553static int read_tpd_led_state(struct asus_wmi *asus)
554{
555 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
556}
557
558static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
559{
560 struct asus_wmi *asus;
561
562 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
563
564 return read_tpd_led_state(asus);
565}
566
567static void kbd_led_update(struct asus_wmi *asus)
568{
569 int ctrl_param = 0;
570
571 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
572 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
573}
574
575static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
576{
577 int retval;
578
579 /*
580 * bits 0-2: level
581 * bit 7: light on/off
582 * bit 8-10: environment (0: dark, 1: normal, 2: light)
583 * bit 17: status unknown
584 */
585 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
586 0xFFFF);
587
588 /* Unknown status is considered as off */
589 if (retval == 0x8000)
590 retval = 0;
591
592 if (retval < 0)
593 return retval;
594
595 if (level)
596 *level = retval & 0x7F;
597 if (env)
598 *env = (retval >> 8) & 0x7F;
599 return 0;
600}
601
602static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
603{
604 struct asus_wmi *asus;
605 int max_level;
606
607 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
608 max_level = asus->kbd_led.max_brightness;
609
610 asus->kbd_led_wk = clamp_val(value, 0, max_level);
611 kbd_led_update(asus);
612}
613
614static void kbd_led_set(struct led_classdev *led_cdev,
615 enum led_brightness value)
616{
617 /* Prevent disabling keyboard backlight on module unregister */
618 if (led_cdev->flags & LED_UNREGISTERING)
619 return;
620
621 do_kbd_led_set(led_cdev, value);
622}
623
624static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
625{
626 struct led_classdev *led_cdev = &asus->kbd_led;
627
628 do_kbd_led_set(led_cdev, value);
629 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
630}
631
632static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
633{
634 struct asus_wmi *asus;
635 int retval, value;
636
637 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
638
639 retval = kbd_led_read(asus, &value, NULL);
640 if (retval < 0)
641 return retval;
642
643 return value;
644}
645
646static int wlan_led_unknown_state(struct asus_wmi *asus)
647{
648 u32 result;
649
650 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
651
652 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
653}
654
655static void wlan_led_update(struct work_struct *work)
656{
657 int ctrl_param;
658 struct asus_wmi *asus;
659
660 asus = container_of(work, struct asus_wmi, wlan_led_work);
661
662 ctrl_param = asus->wlan_led_wk;
663 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
664}
665
666static void wlan_led_set(struct led_classdev *led_cdev,
667 enum led_brightness value)
668{
669 struct asus_wmi *asus;
670
671 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
672
673 asus->wlan_led_wk = !!value;
674 queue_work(asus->led_workqueue, &asus->wlan_led_work);
675}
676
677static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
678{
679 struct asus_wmi *asus;
680 u32 result;
681
682 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
683 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
684
685 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
686}
687
688static void lightbar_led_update(struct work_struct *work)
689{
690 struct asus_wmi *asus;
691 int ctrl_param;
692
693 asus = container_of(work, struct asus_wmi, lightbar_led_work);
694
695 ctrl_param = asus->lightbar_led_wk;
696 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
697}
698
699static void lightbar_led_set(struct led_classdev *led_cdev,
700 enum led_brightness value)
701{
702 struct asus_wmi *asus;
703
704 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
705
706 asus->lightbar_led_wk = !!value;
707 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
708}
709
710static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
711{
712 struct asus_wmi *asus;
713 u32 result;
714
715 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
716 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
717
718 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
719}
720
721static void asus_wmi_led_exit(struct asus_wmi *asus)
722{
723 led_classdev_unregister(&asus->kbd_led);
724 led_classdev_unregister(&asus->tpd_led);
725 led_classdev_unregister(&asus->wlan_led);
726 led_classdev_unregister(&asus->lightbar_led);
727
728 if (asus->led_workqueue)
729 destroy_workqueue(asus->led_workqueue);
730}
731
732static int asus_wmi_led_init(struct asus_wmi *asus)
733{
734 int rv = 0, led_val;
735
736 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
737 if (!asus->led_workqueue)
738 return -ENOMEM;
739
740 if (read_tpd_led_state(asus) >= 0) {
741 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
742
743 asus->tpd_led.name = "asus::touchpad";
744 asus->tpd_led.brightness_set = tpd_led_set;
745 asus->tpd_led.brightness_get = tpd_led_get;
746 asus->tpd_led.max_brightness = 1;
747
748 rv = led_classdev_register(&asus->platform_device->dev,
749 &asus->tpd_led);
750 if (rv)
751 goto error;
752 }
753
754 if (!kbd_led_read(asus, &led_val, NULL)) {
755 asus->kbd_led_wk = led_val;
756 asus->kbd_led.name = "asus::kbd_backlight";
757 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
758 asus->kbd_led.brightness_set = kbd_led_set;
759 asus->kbd_led.brightness_get = kbd_led_get;
760 asus->kbd_led.max_brightness = 3;
761
762 rv = led_classdev_register(&asus->platform_device->dev,
763 &asus->kbd_led);
764 if (rv)
765 goto error;
766 }
767
768 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
769 && (asus->driver->quirks->wapf > 0)) {
770 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
771
772 asus->wlan_led.name = "asus::wlan";
773 asus->wlan_led.brightness_set = wlan_led_set;
774 if (!wlan_led_unknown_state(asus))
775 asus->wlan_led.brightness_get = wlan_led_get;
776 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
777 asus->wlan_led.max_brightness = 1;
778 asus->wlan_led.default_trigger = "asus-wlan";
779
780 rv = led_classdev_register(&asus->platform_device->dev,
781 &asus->wlan_led);
782 if (rv)
783 goto error;
784 }
785
786 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
787 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
788
789 asus->lightbar_led.name = "asus::lightbar";
790 asus->lightbar_led.brightness_set = lightbar_led_set;
791 asus->lightbar_led.brightness_get = lightbar_led_get;
792 asus->lightbar_led.max_brightness = 1;
793
794 rv = led_classdev_register(&asus->platform_device->dev,
795 &asus->lightbar_led);
796 }
797
798error:
799 if (rv)
800 asus_wmi_led_exit(asus);
801
802 return rv;
803}
804
805/* RF *************************************************************************/
806
807/*
808 * PCI hotplug (for wlan rfkill)
809 */
810static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
811{
812 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
813
814 if (result < 0)
815 return false;
816 return !result;
817}
818
819static void asus_rfkill_hotplug(struct asus_wmi *asus)
820{
821 struct pci_dev *dev;
822 struct pci_bus *bus;
823 bool blocked;
824 bool absent;
825 u32 l;
826
827 mutex_lock(&asus->wmi_lock);
828 blocked = asus_wlan_rfkill_blocked(asus);
829 mutex_unlock(&asus->wmi_lock);
830
831 mutex_lock(&asus->hotplug_lock);
832 pci_lock_rescan_remove();
833
834 if (asus->wlan.rfkill)
835 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
836
837 if (asus->hotplug_slot.ops) {
838 bus = pci_find_bus(0, 1);
839 if (!bus) {
840 pr_warn("Unable to find PCI bus 1?\n");
841 goto out_unlock;
842 }
843
844 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
845 pr_err("Unable to read PCI config space?\n");
846 goto out_unlock;
847 }
848 absent = (l == 0xffffffff);
849
850 if (blocked != absent) {
851 pr_warn("BIOS says wireless lan is %s, "
852 "but the pci device is %s\n",
853 blocked ? "blocked" : "unblocked",
854 absent ? "absent" : "present");
855 pr_warn("skipped wireless hotplug as probably "
856 "inappropriate for this model\n");
857 goto out_unlock;
858 }
859
860 if (!blocked) {
861 dev = pci_get_slot(bus, 0);
862 if (dev) {
863 /* Device already present */
864 pci_dev_put(dev);
865 goto out_unlock;
866 }
867 dev = pci_scan_single_device(bus, 0);
868 if (dev) {
869 pci_bus_assign_resources(bus);
870 pci_bus_add_device(dev);
871 }
872 } else {
873 dev = pci_get_slot(bus, 0);
874 if (dev) {
875 pci_stop_and_remove_bus_device(dev);
876 pci_dev_put(dev);
877 }
878 }
879 }
880
881out_unlock:
882 pci_unlock_rescan_remove();
883 mutex_unlock(&asus->hotplug_lock);
884}
885
886static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
887{
888 struct asus_wmi *asus = data;
889
890 if (event != ACPI_NOTIFY_BUS_CHECK)
891 return;
892
893 /*
894 * We can't call directly asus_rfkill_hotplug because most
895 * of the time WMBC is still being executed and not reetrant.
896 * There is currently no way to tell ACPICA that we want this
897 * method to be serialized, we schedule a asus_rfkill_hotplug
898 * call later, in a safer context.
899 */
900 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
901}
902
903static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
904{
905 acpi_status status;
906 acpi_handle handle;
907
908 status = acpi_get_handle(NULL, node, &handle);
909 if (ACPI_FAILURE(status))
910 return -ENODEV;
911
912 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
913 asus_rfkill_notify, asus);
914 if (ACPI_FAILURE(status))
915 pr_warn("Failed to register notify on %s\n", node);
916
917 return 0;
918}
919
920static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
921{
922 acpi_status status = AE_OK;
923 acpi_handle handle;
924
925 status = acpi_get_handle(NULL, node, &handle);
926 if (ACPI_FAILURE(status))
927 return;
928
929 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
930 asus_rfkill_notify);
931 if (ACPI_FAILURE(status))
932 pr_err("Error removing rfkill notify handler %s\n", node);
933}
934
935static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
936 u8 *value)
937{
938 struct asus_wmi *asus = container_of(hotplug_slot,
939 struct asus_wmi, hotplug_slot);
940 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
941
942 if (result < 0)
943 return result;
944
945 *value = !!result;
946 return 0;
947}
948
949static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
950 .get_adapter_status = asus_get_adapter_status,
951 .get_power_status = asus_get_adapter_status,
952};
953
954static void asus_hotplug_work(struct work_struct *work)
955{
956 struct asus_wmi *asus;
957
958 asus = container_of(work, struct asus_wmi, hotplug_work);
959 asus_rfkill_hotplug(asus);
960}
961
962static int asus_setup_pci_hotplug(struct asus_wmi *asus)
963{
964 int ret = -ENOMEM;
965 struct pci_bus *bus = pci_find_bus(0, 1);
966
967 if (!bus) {
968 pr_err("Unable to find wifi PCI bus\n");
969 return -ENODEV;
970 }
971
972 asus->hotplug_workqueue =
973 create_singlethread_workqueue("hotplug_workqueue");
974 if (!asus->hotplug_workqueue)
975 goto error_workqueue;
976
977 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
978
979 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
980
981 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
982 if (ret) {
983 pr_err("Unable to register hotplug slot - %d\n", ret);
984 goto error_register;
985 }
986
987 return 0;
988
989error_register:
990 asus->hotplug_slot.ops = NULL;
991 destroy_workqueue(asus->hotplug_workqueue);
992error_workqueue:
993 return ret;
994}
995
996/*
997 * Rfkill devices
998 */
999static int asus_rfkill_set(void *data, bool blocked)
1000{
1001 struct asus_rfkill *priv = data;
1002 u32 ctrl_param = !blocked;
1003 u32 dev_id = priv->dev_id;
1004
1005 /*
1006 * If the user bit is set, BIOS can't set and record the wlan status,
1007 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
1008 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
1009 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
1010 * while setting the wlan status through WMI.
1011 * This is also the behavior that windows app will do.
1012 */
1013 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1014 priv->asus->driver->wlan_ctrl_by_user)
1015 dev_id = ASUS_WMI_DEVID_WLAN_LED;
1016
1017 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
1018}
1019
1020static void asus_rfkill_query(struct rfkill *rfkill, void *data)
1021{
1022 struct asus_rfkill *priv = data;
1023 int result;
1024
1025 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
1026
1027 if (result < 0)
1028 return;
1029
1030 rfkill_set_sw_state(priv->rfkill, !result);
1031}
1032
1033static int asus_rfkill_wlan_set(void *data, bool blocked)
1034{
1035 struct asus_rfkill *priv = data;
1036 struct asus_wmi *asus = priv->asus;
1037 int ret;
1038
1039 /*
1040 * This handler is enabled only if hotplug is enabled.
1041 * In this case, the asus_wmi_set_devstate() will
1042 * trigger a wmi notification and we need to wait
1043 * this call to finish before being able to call
1044 * any wmi method
1045 */
1046 mutex_lock(&asus->wmi_lock);
1047 ret = asus_rfkill_set(data, blocked);
1048 mutex_unlock(&asus->wmi_lock);
1049 return ret;
1050}
1051
1052static const struct rfkill_ops asus_rfkill_wlan_ops = {
1053 .set_block = asus_rfkill_wlan_set,
1054 .query = asus_rfkill_query,
1055};
1056
1057static const struct rfkill_ops asus_rfkill_ops = {
1058 .set_block = asus_rfkill_set,
1059 .query = asus_rfkill_query,
1060};
1061
1062static int asus_new_rfkill(struct asus_wmi *asus,
1063 struct asus_rfkill *arfkill,
1064 const char *name, enum rfkill_type type, int dev_id)
1065{
1066 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1067 struct rfkill **rfkill = &arfkill->rfkill;
1068
1069 if (result < 0)
1070 return result;
1071
1072 arfkill->dev_id = dev_id;
1073 arfkill->asus = asus;
1074
1075 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1076 asus->driver->quirks->hotplug_wireless)
1077 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1078 &asus_rfkill_wlan_ops, arfkill);
1079 else
1080 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1081 &asus_rfkill_ops, arfkill);
1082
1083 if (!*rfkill)
1084 return -EINVAL;
1085
1086 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1087 (asus->driver->quirks->wapf > 0))
1088 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1089
1090 rfkill_init_sw_state(*rfkill, !result);
1091 result = rfkill_register(*rfkill);
1092 if (result) {
1093 rfkill_destroy(*rfkill);
1094 *rfkill = NULL;
1095 return result;
1096 }
1097 return 0;
1098}
1099
1100static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1101{
1102 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1103 return;
1104
1105 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1106 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1107 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1108 if (asus->wlan.rfkill) {
1109 rfkill_unregister(asus->wlan.rfkill);
1110 rfkill_destroy(asus->wlan.rfkill);
1111 asus->wlan.rfkill = NULL;
1112 }
1113 /*
1114 * Refresh pci hotplug in case the rfkill state was changed after
1115 * asus_unregister_rfkill_notifier()
1116 */
1117 asus_rfkill_hotplug(asus);
1118 if (asus->hotplug_slot.ops)
1119 pci_hp_deregister(&asus->hotplug_slot);
1120 if (asus->hotplug_workqueue)
1121 destroy_workqueue(asus->hotplug_workqueue);
1122
1123 if (asus->bluetooth.rfkill) {
1124 rfkill_unregister(asus->bluetooth.rfkill);
1125 rfkill_destroy(asus->bluetooth.rfkill);
1126 asus->bluetooth.rfkill = NULL;
1127 }
1128 if (asus->wimax.rfkill) {
1129 rfkill_unregister(asus->wimax.rfkill);
1130 rfkill_destroy(asus->wimax.rfkill);
1131 asus->wimax.rfkill = NULL;
1132 }
1133 if (asus->wwan3g.rfkill) {
1134 rfkill_unregister(asus->wwan3g.rfkill);
1135 rfkill_destroy(asus->wwan3g.rfkill);
1136 asus->wwan3g.rfkill = NULL;
1137 }
1138 if (asus->gps.rfkill) {
1139 rfkill_unregister(asus->gps.rfkill);
1140 rfkill_destroy(asus->gps.rfkill);
1141 asus->gps.rfkill = NULL;
1142 }
1143 if (asus->uwb.rfkill) {
1144 rfkill_unregister(asus->uwb.rfkill);
1145 rfkill_destroy(asus->uwb.rfkill);
1146 asus->uwb.rfkill = NULL;
1147 }
1148}
1149
1150static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1151{
1152 int result = 0;
1153
1154 mutex_init(&asus->hotplug_lock);
1155 mutex_init(&asus->wmi_lock);
1156
1157 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1158 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1159
1160 if (result && result != -ENODEV)
1161 goto exit;
1162
1163 result = asus_new_rfkill(asus, &asus->bluetooth,
1164 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1165 ASUS_WMI_DEVID_BLUETOOTH);
1166
1167 if (result && result != -ENODEV)
1168 goto exit;
1169
1170 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1171 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1172
1173 if (result && result != -ENODEV)
1174 goto exit;
1175
1176 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1177 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1178
1179 if (result && result != -ENODEV)
1180 goto exit;
1181
1182 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1183 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1184
1185 if (result && result != -ENODEV)
1186 goto exit;
1187
1188 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1189 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1190
1191 if (result && result != -ENODEV)
1192 goto exit;
1193
1194 if (!asus->driver->quirks->hotplug_wireless)
1195 goto exit;
1196
1197 result = asus_setup_pci_hotplug(asus);
1198 /*
1199 * If we get -EBUSY then something else is handling the PCI hotplug -
1200 * don't fail in this case
1201 */
1202 if (result == -EBUSY)
1203 result = 0;
1204
1205 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1206 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1207 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1208 /*
1209 * Refresh pci hotplug in case the rfkill state was changed during
1210 * setup.
1211 */
1212 asus_rfkill_hotplug(asus);
1213
1214exit:
1215 if (result && result != -ENODEV)
1216 asus_wmi_rfkill_exit(asus);
1217
1218 if (result == -ENODEV)
1219 result = 0;
1220
1221 return result;
1222}
1223
1224/* Quirks *********************************************************************/
1225
1226static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1227{
1228 struct pci_dev *xhci_pdev;
1229 u32 orig_ports_available;
1230 u32 ports_available = asus->driver->quirks->xusb2pr;
1231
1232 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1233 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1234 NULL);
1235
1236 if (!xhci_pdev)
1237 return;
1238
1239 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1240 &orig_ports_available);
1241
1242 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1243 cpu_to_le32(ports_available));
1244
1245 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1246 orig_ports_available, ports_available);
1247}
1248
1249/*
1250 * Some devices dont support or have borcken get_als method
1251 * but still support set method.
1252 */
1253static void asus_wmi_set_als(void)
1254{
1255 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1256}
1257
1258/* Hwmon device ***************************************************************/
1259
1260static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1261 int *speed)
1262{
1263 struct agfn_fan_args args = {
1264 .agfn.len = sizeof(args),
1265 .agfn.mfun = ASUS_FAN_MFUN,
1266 .agfn.sfun = ASUS_FAN_SFUN_READ,
1267 .fan = fan,
1268 .speed = 0,
1269 };
1270 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1271 int status;
1272
1273 if (fan != 1)
1274 return -EINVAL;
1275
1276 status = asus_wmi_evaluate_method_agfn(input);
1277
1278 if (status || args.agfn.err)
1279 return -ENXIO;
1280
1281 if (speed)
1282 *speed = args.speed;
1283
1284 return 0;
1285}
1286
1287static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1288 int *speed)
1289{
1290 struct agfn_fan_args args = {
1291 .agfn.len = sizeof(args),
1292 .agfn.mfun = ASUS_FAN_MFUN,
1293 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1294 .fan = fan,
1295 .speed = speed ? *speed : 0,
1296 };
1297 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1298 int status;
1299
1300 /* 1: for setting 1st fan's speed 0: setting auto mode */
1301 if (fan != 1 && fan != 0)
1302 return -EINVAL;
1303
1304 status = asus_wmi_evaluate_method_agfn(input);
1305
1306 if (status || args.agfn.err)
1307 return -ENXIO;
1308
1309 if (speed && fan == 1)
1310 asus->agfn_pwm = *speed;
1311
1312 return 0;
1313}
1314
1315/*
1316 * Check if we can read the speed of one fan. If true we assume we can also
1317 * control it.
1318 */
1319static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1320{
1321 int status;
1322 int speed;
1323 u32 value;
1324
1325 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1326 if (status != 0)
1327 return false;
1328
1329 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1330 if (status != 0)
1331 return false;
1332
1333 /*
1334 * We need to find a better way, probably using sfun,
1335 * bits or spec ...
1336 * Currently we disable it if:
1337 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1338 * - reverved bits are non-zero
1339 * - sfun and presence bit are not set
1340 */
1341 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1342 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1343}
1344
1345static int asus_fan_set_auto(struct asus_wmi *asus)
1346{
1347 int status;
1348 u32 retval;
1349
1350 switch (asus->fan_type) {
1351 case FAN_TYPE_SPEC83:
1352 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1353 0, &retval);
1354 if (status)
1355 return status;
1356
1357 if (retval != 1)
1358 return -EIO;
1359 break;
1360
1361 case FAN_TYPE_AGFN:
1362 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1363 if (status)
1364 return -ENXIO;
1365 break;
1366
1367 default:
1368 return -ENXIO;
1369 }
1370
1371
1372 return 0;
1373}
1374
1375static ssize_t pwm1_show(struct device *dev,
1376 struct device_attribute *attr,
1377 char *buf)
1378{
1379 struct asus_wmi *asus = dev_get_drvdata(dev);
1380 int err;
1381 int value;
1382
1383 /* If we already set a value then just return it */
1384 if (asus->agfn_pwm >= 0)
1385 return sprintf(buf, "%d\n", asus->agfn_pwm);
1386
1387 /*
1388 * If we haven't set already set a value through the AGFN interface,
1389 * we read a current value through the (now-deprecated) FAN_CTRL device.
1390 */
1391 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1392 if (err < 0)
1393 return err;
1394
1395 value &= 0xFF;
1396
1397 if (value == 1) /* Low Speed */
1398 value = 85;
1399 else if (value == 2)
1400 value = 170;
1401 else if (value == 3)
1402 value = 255;
1403 else if (value) {
1404 pr_err("Unknown fan speed %#x\n", value);
1405 value = -1;
1406 }
1407
1408 return sprintf(buf, "%d\n", value);
1409}
1410
1411static ssize_t pwm1_store(struct device *dev,
1412 struct device_attribute *attr,
1413 const char *buf, size_t count) {
1414 struct asus_wmi *asus = dev_get_drvdata(dev);
1415 int value;
1416 int state;
1417 int ret;
1418
1419 ret = kstrtouint(buf, 10, &value);
1420 if (ret)
1421 return ret;
1422
1423 value = clamp(value, 0, 255);
1424
1425 state = asus_agfn_fan_speed_write(asus, 1, &value);
1426 if (state)
1427 pr_warn("Setting fan speed failed: %d\n", state);
1428 else
1429 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1430
1431 return count;
1432}
1433
1434static ssize_t fan1_input_show(struct device *dev,
1435 struct device_attribute *attr,
1436 char *buf)
1437{
1438 struct asus_wmi *asus = dev_get_drvdata(dev);
1439 int value;
1440 int ret;
1441
1442 switch (asus->fan_type) {
1443 case FAN_TYPE_SPEC83:
1444 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1445 &value);
1446 if (ret < 0)
1447 return ret;
1448
1449 value &= 0xffff;
1450 break;
1451
1452 case FAN_TYPE_AGFN:
1453 /* no speed readable on manual mode */
1454 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1455 return -ENXIO;
1456
1457 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1458 if (ret) {
1459 pr_warn("reading fan speed failed: %d\n", ret);
1460 return -ENXIO;
1461 }
1462 break;
1463
1464 default:
1465 return -ENXIO;
1466 }
1467
1468 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1469}
1470
1471static ssize_t pwm1_enable_show(struct device *dev,
1472 struct device_attribute *attr,
1473 char *buf)
1474{
1475 struct asus_wmi *asus = dev_get_drvdata(dev);
1476
1477 /*
1478 * Just read back the cached pwm mode.
1479 *
1480 * For the CPU_FAN device, the spec indicates that we should be
1481 * able to read the device status and consult bit 19 to see if we
1482 * are in Full On or Automatic mode. However, this does not work
1483 * in practice on X532FL at least (the bit is always 0) and there's
1484 * also nothing in the DSDT to indicate that this behaviour exists.
1485 */
1486 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1487}
1488
1489static ssize_t pwm1_enable_store(struct device *dev,
1490 struct device_attribute *attr,
1491 const char *buf, size_t count)
1492{
1493 struct asus_wmi *asus = dev_get_drvdata(dev);
1494 int status = 0;
1495 int state;
1496 int value;
1497 int ret;
1498 u32 retval;
1499
1500 ret = kstrtouint(buf, 10, &state);
1501 if (ret)
1502 return ret;
1503
1504 if (asus->fan_type == FAN_TYPE_SPEC83) {
1505 switch (state) { /* standard documented hwmon values */
1506 case ASUS_FAN_CTRL_FULLSPEED:
1507 value = 1;
1508 break;
1509 case ASUS_FAN_CTRL_AUTO:
1510 value = 0;
1511 break;
1512 default:
1513 return -EINVAL;
1514 }
1515
1516 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1517 value, &retval);
1518 if (ret)
1519 return ret;
1520
1521 if (retval != 1)
1522 return -EIO;
1523 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1524 switch (state) {
1525 case ASUS_FAN_CTRL_MANUAL:
1526 break;
1527
1528 case ASUS_FAN_CTRL_AUTO:
1529 status = asus_fan_set_auto(asus);
1530 if (status)
1531 return status;
1532 break;
1533
1534 default:
1535 return -EINVAL;
1536 }
1537 }
1538
1539 asus->fan_pwm_mode = state;
1540 return count;
1541}
1542
1543static ssize_t fan1_label_show(struct device *dev,
1544 struct device_attribute *attr,
1545 char *buf)
1546{
1547 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1548}
1549
1550static ssize_t asus_hwmon_temp1(struct device *dev,
1551 struct device_attribute *attr,
1552 char *buf)
1553{
1554 struct asus_wmi *asus = dev_get_drvdata(dev);
1555 u32 value;
1556 int err;
1557
1558 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1559 if (err < 0)
1560 return err;
1561
1562 return sprintf(buf, "%ld\n",
1563 deci_kelvin_to_millicelsius(value & 0xFFFF));
1564}
1565
1566/* Fan1 */
1567static DEVICE_ATTR_RW(pwm1);
1568static DEVICE_ATTR_RW(pwm1_enable);
1569static DEVICE_ATTR_RO(fan1_input);
1570static DEVICE_ATTR_RO(fan1_label);
1571
1572/* Temperature */
1573static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1574
1575static struct attribute *hwmon_attributes[] = {
1576 &dev_attr_pwm1.attr,
1577 &dev_attr_pwm1_enable.attr,
1578 &dev_attr_fan1_input.attr,
1579 &dev_attr_fan1_label.attr,
1580
1581 &dev_attr_temp1_input.attr,
1582 NULL
1583};
1584
1585static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1586 struct attribute *attr, int idx)
1587{
1588 struct device *dev = container_of(kobj, struct device, kobj);
1589 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1590 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1591
1592 if (attr == &dev_attr_pwm1.attr) {
1593 if (asus->fan_type != FAN_TYPE_AGFN)
1594 return 0;
1595 } else if (attr == &dev_attr_fan1_input.attr
1596 || attr == &dev_attr_fan1_label.attr
1597 || attr == &dev_attr_pwm1_enable.attr) {
1598 if (asus->fan_type == FAN_TYPE_NONE)
1599 return 0;
1600 } else if (attr == &dev_attr_temp1_input.attr) {
1601 int err = asus_wmi_get_devstate(asus,
1602 ASUS_WMI_DEVID_THERMAL_CTRL,
1603 &value);
1604
1605 if (err < 0)
1606 return 0; /* can't return negative here */
1607
1608 /*
1609 * If the temperature value in deci-Kelvin is near the absolute
1610 * zero temperature, something is clearly wrong
1611 */
1612 if (value == 0 || value == 1)
1613 return 0;
1614 }
1615
1616 return attr->mode;
1617}
1618
1619static const struct attribute_group hwmon_attribute_group = {
1620 .is_visible = asus_hwmon_sysfs_is_visible,
1621 .attrs = hwmon_attributes
1622};
1623__ATTRIBUTE_GROUPS(hwmon_attribute);
1624
1625static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1626{
1627 struct device *dev = &asus->platform_device->dev;
1628 struct device *hwmon;
1629
1630 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1631 hwmon_attribute_groups);
1632
1633 if (IS_ERR(hwmon)) {
1634 pr_err("Could not register asus hwmon device\n");
1635 return PTR_ERR(hwmon);
1636 }
1637 return 0;
1638}
1639
1640static int asus_wmi_fan_init(struct asus_wmi *asus)
1641{
1642 asus->fan_type = FAN_TYPE_NONE;
1643 asus->agfn_pwm = -1;
1644
1645 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1646 asus->fan_type = FAN_TYPE_SPEC83;
1647 else if (asus_wmi_has_agfn_fan(asus))
1648 asus->fan_type = FAN_TYPE_AGFN;
1649
1650 if (asus->fan_type == FAN_TYPE_NONE)
1651 return -ENODEV;
1652
1653 asus_fan_set_auto(asus);
1654 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1655 return 0;
1656}
1657
1658/* Fan mode *******************************************************************/
1659
1660static int fan_boost_mode_check_present(struct asus_wmi *asus)
1661{
1662 u32 result;
1663 int err;
1664
1665 asus->fan_boost_mode_available = false;
1666
1667 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1668 &result);
1669 if (err) {
1670 if (err == -ENODEV)
1671 return 0;
1672 else
1673 return err;
1674 }
1675
1676 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1677 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1678 asus->fan_boost_mode_available = true;
1679 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1680 }
1681
1682 return 0;
1683}
1684
1685static int fan_boost_mode_write(struct asus_wmi *asus)
1686{
1687 int err;
1688 u8 value;
1689 u32 retval;
1690
1691 value = asus->fan_boost_mode;
1692
1693 pr_info("Set fan boost mode: %u\n", value);
1694 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1695 &retval);
1696
1697 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
1698 "fan_boost_mode");
1699
1700 if (err) {
1701 pr_warn("Failed to set fan boost mode: %d\n", err);
1702 return err;
1703 }
1704
1705 if (retval != 1) {
1706 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1707 retval);
1708 return -EIO;
1709 }
1710
1711 return 0;
1712}
1713
1714static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1715{
1716 u8 mask = asus->fan_boost_mode_mask;
1717
1718 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1719 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1720 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1721 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1722 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1723 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1724 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1725 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1726 else
1727 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1728 } else {
1729 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1730 }
1731
1732 return fan_boost_mode_write(asus);
1733}
1734
1735static ssize_t fan_boost_mode_show(struct device *dev,
1736 struct device_attribute *attr, char *buf)
1737{
1738 struct asus_wmi *asus = dev_get_drvdata(dev);
1739
1740 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1741}
1742
1743static ssize_t fan_boost_mode_store(struct device *dev,
1744 struct device_attribute *attr,
1745 const char *buf, size_t count)
1746{
1747 int result;
1748 u8 new_mode;
1749 struct asus_wmi *asus = dev_get_drvdata(dev);
1750 u8 mask = asus->fan_boost_mode_mask;
1751
1752 result = kstrtou8(buf, 10, &new_mode);
1753 if (result < 0) {
1754 pr_warn("Trying to store invalid value\n");
1755 return result;
1756 }
1757
1758 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1759 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1760 return -EINVAL;
1761 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1762 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1763 return -EINVAL;
1764 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1765 return -EINVAL;
1766 }
1767
1768 asus->fan_boost_mode = new_mode;
1769 fan_boost_mode_write(asus);
1770
1771 return count;
1772}
1773
1774// Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1775static DEVICE_ATTR_RW(fan_boost_mode);
1776
1777/* Throttle thermal policy ****************************************************/
1778
1779static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
1780{
1781 u32 result;
1782 int err;
1783
1784 asus->throttle_thermal_policy_available = false;
1785
1786 err = asus_wmi_get_devstate(asus,
1787 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1788 &result);
1789 if (err) {
1790 if (err == -ENODEV)
1791 return 0;
1792 return err;
1793 }
1794
1795 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
1796 asus->throttle_thermal_policy_available = true;
1797
1798 return 0;
1799}
1800
1801static int throttle_thermal_policy_write(struct asus_wmi *asus)
1802{
1803 int err;
1804 u8 value;
1805 u32 retval;
1806
1807 value = asus->throttle_thermal_policy_mode;
1808
1809 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1810 value, &retval);
1811
1812 sysfs_notify(&asus->platform_device->dev.kobj, NULL,
1813 "throttle_thermal_policy");
1814
1815 if (err) {
1816 pr_warn("Failed to set throttle thermal policy: %d\n", err);
1817 return err;
1818 }
1819
1820 if (retval != 1) {
1821 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
1822 retval);
1823 return -EIO;
1824 }
1825
1826 return 0;
1827}
1828
1829static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
1830{
1831 if (!asus->throttle_thermal_policy_available)
1832 return 0;
1833
1834 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1835 return throttle_thermal_policy_write(asus);
1836}
1837
1838static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
1839{
1840 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
1841
1842 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1843 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1844
1845 asus->throttle_thermal_policy_mode = new_mode;
1846 return throttle_thermal_policy_write(asus);
1847}
1848
1849static ssize_t throttle_thermal_policy_show(struct device *dev,
1850 struct device_attribute *attr, char *buf)
1851{
1852 struct asus_wmi *asus = dev_get_drvdata(dev);
1853 u8 mode = asus->throttle_thermal_policy_mode;
1854
1855 return scnprintf(buf, PAGE_SIZE, "%d\n", mode);
1856}
1857
1858static ssize_t throttle_thermal_policy_store(struct device *dev,
1859 struct device_attribute *attr,
1860 const char *buf, size_t count)
1861{
1862 int result;
1863 u8 new_mode;
1864 struct asus_wmi *asus = dev_get_drvdata(dev);
1865
1866 result = kstrtou8(buf, 10, &new_mode);
1867 if (result < 0)
1868 return result;
1869
1870 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1871 return -EINVAL;
1872
1873 asus->throttle_thermal_policy_mode = new_mode;
1874 throttle_thermal_policy_write(asus);
1875
1876 return count;
1877}
1878
1879// Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
1880static DEVICE_ATTR_RW(throttle_thermal_policy);
1881
1882/* Backlight ******************************************************************/
1883
1884static int read_backlight_power(struct asus_wmi *asus)
1885{
1886 int ret;
1887
1888 if (asus->driver->quirks->store_backlight_power)
1889 ret = !asus->driver->panel_power;
1890 else
1891 ret = asus_wmi_get_devstate_simple(asus,
1892 ASUS_WMI_DEVID_BACKLIGHT);
1893
1894 if (ret < 0)
1895 return ret;
1896
1897 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1898}
1899
1900static int read_brightness_max(struct asus_wmi *asus)
1901{
1902 u32 retval;
1903 int err;
1904
1905 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1906 if (err < 0)
1907 return err;
1908
1909 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1910 retval >>= 8;
1911
1912 if (!retval)
1913 return -ENODEV;
1914
1915 return retval;
1916}
1917
1918static int read_brightness(struct backlight_device *bd)
1919{
1920 struct asus_wmi *asus = bl_get_data(bd);
1921 u32 retval;
1922 int err;
1923
1924 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1925 if (err < 0)
1926 return err;
1927
1928 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1929}
1930
1931static u32 get_scalar_command(struct backlight_device *bd)
1932{
1933 struct asus_wmi *asus = bl_get_data(bd);
1934 u32 ctrl_param = 0;
1935
1936 if ((asus->driver->brightness < bd->props.brightness) ||
1937 bd->props.brightness == bd->props.max_brightness)
1938 ctrl_param = 0x00008001;
1939 else if ((asus->driver->brightness > bd->props.brightness) ||
1940 bd->props.brightness == 0)
1941 ctrl_param = 0x00008000;
1942
1943 asus->driver->brightness = bd->props.brightness;
1944
1945 return ctrl_param;
1946}
1947
1948static int update_bl_status(struct backlight_device *bd)
1949{
1950 struct asus_wmi *asus = bl_get_data(bd);
1951 u32 ctrl_param;
1952 int power, err = 0;
1953
1954 power = read_backlight_power(asus);
1955 if (power != -ENODEV && bd->props.power != power) {
1956 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1957 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1958 ctrl_param, NULL);
1959 if (asus->driver->quirks->store_backlight_power)
1960 asus->driver->panel_power = bd->props.power;
1961
1962 /* When using scalar brightness, updating the brightness
1963 * will mess with the backlight power */
1964 if (asus->driver->quirks->scalar_panel_brightness)
1965 return err;
1966 }
1967
1968 if (asus->driver->quirks->scalar_panel_brightness)
1969 ctrl_param = get_scalar_command(bd);
1970 else
1971 ctrl_param = bd->props.brightness;
1972
1973 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1974 ctrl_param, NULL);
1975
1976 return err;
1977}
1978
1979static const struct backlight_ops asus_wmi_bl_ops = {
1980 .get_brightness = read_brightness,
1981 .update_status = update_bl_status,
1982};
1983
1984static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1985{
1986 struct backlight_device *bd = asus->backlight_device;
1987 int old = bd->props.brightness;
1988 int new = old;
1989
1990 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1991 new = code - NOTIFY_BRNUP_MIN + 1;
1992 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1993 new = code - NOTIFY_BRNDOWN_MIN;
1994
1995 bd->props.brightness = new;
1996 backlight_update_status(bd);
1997 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1998
1999 return old;
2000}
2001
2002static int asus_wmi_backlight_init(struct asus_wmi *asus)
2003{
2004 struct backlight_device *bd;
2005 struct backlight_properties props;
2006 int max;
2007 int power;
2008
2009 max = read_brightness_max(asus);
2010 if (max < 0)
2011 return max;
2012
2013 power = read_backlight_power(asus);
2014 if (power == -ENODEV)
2015 power = FB_BLANK_UNBLANK;
2016 else if (power < 0)
2017 return power;
2018
2019 memset(&props, 0, sizeof(struct backlight_properties));
2020 props.type = BACKLIGHT_PLATFORM;
2021 props.max_brightness = max;
2022 bd = backlight_device_register(asus->driver->name,
2023 &asus->platform_device->dev, asus,
2024 &asus_wmi_bl_ops, &props);
2025 if (IS_ERR(bd)) {
2026 pr_err("Could not register backlight device\n");
2027 return PTR_ERR(bd);
2028 }
2029
2030 asus->backlight_device = bd;
2031
2032 if (asus->driver->quirks->store_backlight_power)
2033 asus->driver->panel_power = power;
2034
2035 bd->props.brightness = read_brightness(bd);
2036 bd->props.power = power;
2037 backlight_update_status(bd);
2038
2039 asus->driver->brightness = bd->props.brightness;
2040
2041 return 0;
2042}
2043
2044static void asus_wmi_backlight_exit(struct asus_wmi *asus)
2045{
2046 backlight_device_unregister(asus->backlight_device);
2047
2048 asus->backlight_device = NULL;
2049}
2050
2051static int is_display_toggle(int code)
2052{
2053 /* display toggle keys */
2054 if ((code >= 0x61 && code <= 0x67) ||
2055 (code >= 0x8c && code <= 0x93) ||
2056 (code >= 0xa0 && code <= 0xa7) ||
2057 (code >= 0xd0 && code <= 0xd5))
2058 return 1;
2059
2060 return 0;
2061}
2062
2063/* Fn-lock ********************************************************************/
2064
2065static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
2066{
2067 u32 result;
2068
2069 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
2070
2071 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2072 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
2073}
2074
2075static void asus_wmi_fnlock_update(struct asus_wmi *asus)
2076{
2077 int mode = asus->fnlock_locked;
2078
2079 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
2080}
2081
2082/* WMI events *****************************************************************/
2083
2084static int asus_wmi_get_event_code(u32 value)
2085{
2086 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
2087 union acpi_object *obj;
2088 acpi_status status;
2089 int code;
2090
2091 status = wmi_get_event_data(value, &response);
2092 if (ACPI_FAILURE(status)) {
2093 pr_warn("Failed to get WMI notify code: %s\n",
2094 acpi_format_exception(status));
2095 return -EIO;
2096 }
2097
2098 obj = (union acpi_object *)response.pointer;
2099
2100 if (obj && obj->type == ACPI_TYPE_INTEGER)
2101 code = (int)(obj->integer.value & WMI_EVENT_MASK);
2102 else
2103 code = -EIO;
2104
2105 kfree(obj);
2106 return code;
2107}
2108
2109static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
2110{
2111 unsigned int key_value = 1;
2112 bool autorelease = 1;
2113 int result, orig_code;
2114
2115 orig_code = code;
2116
2117 if (asus->driver->key_filter) {
2118 asus->driver->key_filter(asus->driver, &code, &key_value,
2119 &autorelease);
2120 if (code == ASUS_WMI_KEY_IGNORE)
2121 return;
2122 }
2123
2124 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
2125 code = ASUS_WMI_BRN_UP;
2126 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
2127 code = ASUS_WMI_BRN_DOWN;
2128
2129 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
2130 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2131 asus_wmi_backlight_notify(asus, orig_code);
2132 return;
2133 }
2134 }
2135
2136 if (code == NOTIFY_KBD_BRTUP) {
2137 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2138 return;
2139 }
2140 if (code == NOTIFY_KBD_BRTDWN) {
2141 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
2142 return;
2143 }
2144 if (code == NOTIFY_KBD_BRTTOGGLE) {
2145 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
2146 kbd_led_set_by_kbd(asus, 0);
2147 else
2148 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2149 return;
2150 }
2151
2152 if (code == NOTIFY_FNLOCK_TOGGLE) {
2153 asus->fnlock_locked = !asus->fnlock_locked;
2154 asus_wmi_fnlock_update(asus);
2155 return;
2156 }
2157
2158 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
2159 result = asus_wmi_get_devstate_simple(asus,
2160 ASUS_WMI_DEVID_KBD_DOCK);
2161 if (result >= 0) {
2162 input_report_switch(asus->inputdev, SW_TABLET_MODE,
2163 !result);
2164 input_sync(asus->inputdev);
2165 }
2166 return;
2167 }
2168
2169 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) {
2170 lid_flip_tablet_mode_get_state(asus);
2171 return;
2172 }
2173
2174 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2175 fan_boost_mode_switch_next(asus);
2176 return;
2177 }
2178
2179 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) {
2180 throttle_thermal_policy_switch_next(asus);
2181 return;
2182 }
2183
2184 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2185 return;
2186
2187 if (!sparse_keymap_report_event(asus->inputdev, code,
2188 key_value, autorelease))
2189 pr_info("Unknown key %x pressed\n", code);
2190}
2191
2192static void asus_wmi_notify(u32 value, void *context)
2193{
2194 struct asus_wmi *asus = context;
2195 int code;
2196 int i;
2197
2198 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2199 code = asus_wmi_get_event_code(value);
2200 if (code < 0) {
2201 pr_warn("Failed to get notify code: %d\n", code);
2202 return;
2203 }
2204
2205 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2206 return;
2207
2208 asus_wmi_handle_event_code(code, asus);
2209
2210 /*
2211 * Double check that queue is present:
2212 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2213 */
2214 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2215 return;
2216 }
2217
2218 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2219}
2220
2221static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2222{
2223 int code;
2224 int i;
2225
2226 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2227 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2228 if (code < 0) {
2229 pr_warn("Failed to get event during flush: %d\n", code);
2230 return code;
2231 }
2232
2233 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2234 return 0;
2235 }
2236
2237 pr_warn("Failed to flush event queue\n");
2238 return -EIO;
2239}
2240
2241/* Sysfs **********************************************************************/
2242
2243static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2244 const char *buf, size_t count)
2245{
2246 u32 retval;
2247 int err, value;
2248
2249 value = asus_wmi_get_devstate_simple(asus, devid);
2250 if (value < 0)
2251 return value;
2252
2253 err = kstrtoint(buf, 0, &value);
2254 if (err)
2255 return err;
2256
2257 err = asus_wmi_set_devstate(devid, value, &retval);
2258 if (err < 0)
2259 return err;
2260
2261 return count;
2262}
2263
2264static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2265{
2266 int value = asus_wmi_get_devstate_simple(asus, devid);
2267
2268 if (value < 0)
2269 return value;
2270
2271 return sprintf(buf, "%d\n", value);
2272}
2273
2274#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2275 static ssize_t show_##_name(struct device *dev, \
2276 struct device_attribute *attr, \
2277 char *buf) \
2278 { \
2279 struct asus_wmi *asus = dev_get_drvdata(dev); \
2280 \
2281 return show_sys_wmi(asus, _cm, buf); \
2282 } \
2283 static ssize_t store_##_name(struct device *dev, \
2284 struct device_attribute *attr, \
2285 const char *buf, size_t count) \
2286 { \
2287 struct asus_wmi *asus = dev_get_drvdata(dev); \
2288 \
2289 return store_sys_wmi(asus, _cm, buf, count); \
2290 } \
2291 static struct device_attribute dev_attr_##_name = { \
2292 .attr = { \
2293 .name = __stringify(_name), \
2294 .mode = _mode }, \
2295 .show = show_##_name, \
2296 .store = store_##_name, \
2297 }
2298
2299ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2300ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2301ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2302ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2303ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2304
2305static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2306 const char *buf, size_t count)
2307{
2308 int value, rv;
2309
2310 rv = kstrtoint(buf, 0, &value);
2311 if (rv)
2312 return rv;
2313
2314 if (value < 0 || value > 2)
2315 return -EINVAL;
2316
2317 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2318 if (rv < 0)
2319 return rv;
2320
2321 return count;
2322}
2323
2324static DEVICE_ATTR_WO(cpufv);
2325
2326static struct attribute *platform_attributes[] = {
2327 &dev_attr_cpufv.attr,
2328 &dev_attr_camera.attr,
2329 &dev_attr_cardr.attr,
2330 &dev_attr_touchpad.attr,
2331 &dev_attr_lid_resume.attr,
2332 &dev_attr_als_enable.attr,
2333 &dev_attr_fan_boost_mode.attr,
2334 &dev_attr_throttle_thermal_policy.attr,
2335 NULL
2336};
2337
2338static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2339 struct attribute *attr, int idx)
2340{
2341 struct device *dev = container_of(kobj, struct device, kobj);
2342 struct asus_wmi *asus = dev_get_drvdata(dev);
2343 bool ok = true;
2344 int devid = -1;
2345
2346 if (attr == &dev_attr_camera.attr)
2347 devid = ASUS_WMI_DEVID_CAMERA;
2348 else if (attr == &dev_attr_cardr.attr)
2349 devid = ASUS_WMI_DEVID_CARDREADER;
2350 else if (attr == &dev_attr_touchpad.attr)
2351 devid = ASUS_WMI_DEVID_TOUCHPAD;
2352 else if (attr == &dev_attr_lid_resume.attr)
2353 devid = ASUS_WMI_DEVID_LID_RESUME;
2354 else if (attr == &dev_attr_als_enable.attr)
2355 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2356 else if (attr == &dev_attr_fan_boost_mode.attr)
2357 ok = asus->fan_boost_mode_available;
2358 else if (attr == &dev_attr_throttle_thermal_policy.attr)
2359 ok = asus->throttle_thermal_policy_available;
2360
2361 if (devid != -1)
2362 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2363
2364 return ok ? attr->mode : 0;
2365}
2366
2367static const struct attribute_group platform_attribute_group = {
2368 .is_visible = asus_sysfs_is_visible,
2369 .attrs = platform_attributes
2370};
2371
2372static void asus_wmi_sysfs_exit(struct platform_device *device)
2373{
2374 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2375}
2376
2377static int asus_wmi_sysfs_init(struct platform_device *device)
2378{
2379 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2380}
2381
2382/* Platform device ************************************************************/
2383
2384static int asus_wmi_platform_init(struct asus_wmi *asus)
2385{
2386 struct device *dev = &asus->platform_device->dev;
2387 char *wmi_uid;
2388 int rv;
2389
2390 /* INIT enable hotkeys on some models */
2391 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2392 pr_info("Initialization: %#x\n", rv);
2393
2394 /* We don't know yet what to do with this version... */
2395 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2396 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2397 asus->spec = rv;
2398 }
2399
2400 /*
2401 * The SFUN method probably allows the original driver to get the list
2402 * of features supported by a given model. For now, 0x0100 or 0x0800
2403 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2404 * The significance of others is yet to be found.
2405 */
2406 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2407 pr_info("SFUN value: %#x\n", rv);
2408 asus->sfun = rv;
2409 }
2410
2411 /*
2412 * Eee PC and Notebooks seems to have different method_id for DSTS,
2413 * but it may also be related to the BIOS's SPEC.
2414 * Note, on most Eeepc, there is no way to check if a method exist
2415 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2416 * but once again, SPEC may probably be used for that kind of things.
2417 *
2418 * Additionally at least TUF Gaming series laptops return nothing for
2419 * unknown methods, so the detection in this way is not possible.
2420 *
2421 * There is strong indication that only ACPI WMI devices that have _UID
2422 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2423 */
2424 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2425 if (!wmi_uid)
2426 return -ENODEV;
2427
2428 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2429 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2430 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2431 } else {
2432 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2433 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2434 }
2435
2436 /*
2437 * Some devices can have multiple event codes stored in a queue before
2438 * the module load if it was unloaded intermittently after calling
2439 * the INIT method (enables event handling). The WMI notify handler is
2440 * expected to retrieve all event codes until a retrieved code equals
2441 * queue end marker (One or Ones). Old codes are flushed from the queue
2442 * upon module load. Not enabling this when it should be has minimal
2443 * visible impact so fall back if anything goes wrong.
2444 */
2445 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2446 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2447 dev_info(dev, "Detected ATK, enable event queue\n");
2448
2449 if (!asus_wmi_notify_queue_flush(asus))
2450 asus->wmi_event_queue = true;
2451 }
2452
2453 /* CWAP allow to define the behavior of the Fn+F2 key,
2454 * this method doesn't seems to be present on Eee PCs */
2455 if (asus->driver->quirks->wapf >= 0)
2456 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2457 asus->driver->quirks->wapf, NULL);
2458
2459 return 0;
2460}
2461
2462/* debugfs ********************************************************************/
2463
2464struct asus_wmi_debugfs_node {
2465 struct asus_wmi *asus;
2466 char *name;
2467 int (*show) (struct seq_file *m, void *data);
2468};
2469
2470static int show_dsts(struct seq_file *m, void *data)
2471{
2472 struct asus_wmi *asus = m->private;
2473 int err;
2474 u32 retval = -1;
2475
2476 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2477 if (err < 0)
2478 return err;
2479
2480 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2481
2482 return 0;
2483}
2484
2485static int show_devs(struct seq_file *m, void *data)
2486{
2487 struct asus_wmi *asus = m->private;
2488 int err;
2489 u32 retval = -1;
2490
2491 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2492 &retval);
2493 if (err < 0)
2494 return err;
2495
2496 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2497 asus->debug.ctrl_param, retval);
2498
2499 return 0;
2500}
2501
2502static int show_call(struct seq_file *m, void *data)
2503{
2504 struct asus_wmi *asus = m->private;
2505 struct bios_args args = {
2506 .arg0 = asus->debug.dev_id,
2507 .arg1 = asus->debug.ctrl_param,
2508 };
2509 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2510 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2511 union acpi_object *obj;
2512 acpi_status status;
2513
2514 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2515 0, asus->debug.method_id,
2516 &input, &output);
2517
2518 if (ACPI_FAILURE(status))
2519 return -EIO;
2520
2521 obj = (union acpi_object *)output.pointer;
2522 if (obj && obj->type == ACPI_TYPE_INTEGER)
2523 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2524 asus->debug.dev_id, asus->debug.ctrl_param,
2525 (u32) obj->integer.value);
2526 else
2527 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2528 asus->debug.dev_id, asus->debug.ctrl_param,
2529 obj ? obj->type : -1);
2530
2531 kfree(obj);
2532
2533 return 0;
2534}
2535
2536static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2537 {NULL, "devs", show_devs},
2538 {NULL, "dsts", show_dsts},
2539 {NULL, "call", show_call},
2540};
2541
2542static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2543{
2544 struct asus_wmi_debugfs_node *node = inode->i_private;
2545
2546 return single_open(file, node->show, node->asus);
2547}
2548
2549static const struct file_operations asus_wmi_debugfs_io_ops = {
2550 .owner = THIS_MODULE,
2551 .open = asus_wmi_debugfs_open,
2552 .read = seq_read,
2553 .llseek = seq_lseek,
2554 .release = single_release,
2555};
2556
2557static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2558{
2559 debugfs_remove_recursive(asus->debug.root);
2560}
2561
2562static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2563{
2564 int i;
2565
2566 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2567
2568 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2569 &asus->debug.method_id);
2570
2571 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2572 &asus->debug.dev_id);
2573
2574 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2575 &asus->debug.ctrl_param);
2576
2577 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2578 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2579
2580 node->asus = asus;
2581 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2582 asus->debug.root, node,
2583 &asus_wmi_debugfs_io_ops);
2584 }
2585}
2586
2587/* Init / exit ****************************************************************/
2588
2589static int asus_wmi_add(struct platform_device *pdev)
2590{
2591 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2592 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2593 struct asus_wmi *asus;
2594 const char *chassis_type;
2595 acpi_status status;
2596 int err;
2597 u32 result;
2598
2599 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2600 if (!asus)
2601 return -ENOMEM;
2602
2603 asus->driver = wdrv;
2604 asus->platform_device = pdev;
2605 wdrv->platform_device = pdev;
2606 platform_set_drvdata(asus->platform_device, asus);
2607
2608 if (wdrv->detect_quirks)
2609 wdrv->detect_quirks(asus->driver);
2610
2611 err = asus_wmi_platform_init(asus);
2612 if (err)
2613 goto fail_platform;
2614
2615 err = fan_boost_mode_check_present(asus);
2616 if (err)
2617 goto fail_fan_boost_mode;
2618
2619 err = throttle_thermal_policy_check_present(asus);
2620 if (err)
2621 goto fail_throttle_thermal_policy;
2622 else
2623 throttle_thermal_policy_set_default(asus);
2624
2625 err = asus_wmi_sysfs_init(asus->platform_device);
2626 if (err)
2627 goto fail_sysfs;
2628
2629 err = asus_wmi_input_init(asus);
2630 if (err)
2631 goto fail_input;
2632
2633 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2634
2635 err = asus_wmi_hwmon_init(asus);
2636 if (err)
2637 goto fail_hwmon;
2638
2639 err = asus_wmi_led_init(asus);
2640 if (err)
2641 goto fail_leds;
2642
2643 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2644 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2645 asus->driver->wlan_ctrl_by_user = 1;
2646
2647 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2648 err = asus_wmi_rfkill_init(asus);
2649 if (err)
2650 goto fail_rfkill;
2651 }
2652
2653 if (asus->driver->quirks->wmi_force_als_set)
2654 asus_wmi_set_als();
2655
2656 /* Some Asus desktop boards export an acpi-video backlight interface,
2657 stop this from showing up */
2658 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2659 if (chassis_type && !strcmp(chassis_type, "3"))
2660 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2661
2662 if (asus->driver->quirks->wmi_backlight_power)
2663 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2664
2665 if (asus->driver->quirks->wmi_backlight_native)
2666 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2667
2668 if (asus->driver->quirks->xusb2pr)
2669 asus_wmi_set_xusb2pr(asus);
2670
2671 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2672 err = asus_wmi_backlight_init(asus);
2673 if (err && err != -ENODEV)
2674 goto fail_backlight;
2675 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2676 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2677
2678 if (asus_wmi_has_fnlock_key(asus)) {
2679 asus->fnlock_locked = fnlock_default;
2680 asus_wmi_fnlock_update(asus);
2681 }
2682
2683 status = wmi_install_notify_handler(asus->driver->event_guid,
2684 asus_wmi_notify, asus);
2685 if (ACPI_FAILURE(status)) {
2686 pr_err("Unable to register notify handler - %d\n", status);
2687 err = -ENODEV;
2688 goto fail_wmi_handler;
2689 }
2690
2691 asus_wmi_battery_init(asus);
2692
2693 asus_wmi_debugfs_init(asus);
2694
2695 return 0;
2696
2697fail_wmi_handler:
2698 asus_wmi_backlight_exit(asus);
2699fail_backlight:
2700 asus_wmi_rfkill_exit(asus);
2701fail_rfkill:
2702 asus_wmi_led_exit(asus);
2703fail_leds:
2704fail_hwmon:
2705 asus_wmi_input_exit(asus);
2706fail_input:
2707 asus_wmi_sysfs_exit(asus->platform_device);
2708fail_sysfs:
2709fail_throttle_thermal_policy:
2710fail_fan_boost_mode:
2711fail_platform:
2712 kfree(asus);
2713 return err;
2714}
2715
2716static int asus_wmi_remove(struct platform_device *device)
2717{
2718 struct asus_wmi *asus;
2719
2720 asus = platform_get_drvdata(device);
2721 wmi_remove_notify_handler(asus->driver->event_guid);
2722 asus_wmi_backlight_exit(asus);
2723 asus_wmi_input_exit(asus);
2724 asus_wmi_led_exit(asus);
2725 asus_wmi_rfkill_exit(asus);
2726 asus_wmi_debugfs_exit(asus);
2727 asus_wmi_sysfs_exit(asus->platform_device);
2728 asus_fan_set_auto(asus);
2729 asus_wmi_battery_exit(asus);
2730
2731 kfree(asus);
2732 return 0;
2733}
2734
2735/* Platform driver - hibernate/resume callbacks *******************************/
2736
2737static int asus_hotk_thaw(struct device *device)
2738{
2739 struct asus_wmi *asus = dev_get_drvdata(device);
2740
2741 if (asus->wlan.rfkill) {
2742 bool wlan;
2743
2744 /*
2745 * Work around bios bug - acpi _PTS turns off the wireless led
2746 * during suspend. Normally it restores it on resume, but
2747 * we should kick it ourselves in case hibernation is aborted.
2748 */
2749 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2750 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2751 }
2752
2753 return 0;
2754}
2755
2756static int asus_hotk_resume(struct device *device)
2757{
2758 struct asus_wmi *asus = dev_get_drvdata(device);
2759
2760 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2761 kbd_led_update(asus);
2762
2763 if (asus_wmi_has_fnlock_key(asus))
2764 asus_wmi_fnlock_update(asus);
2765
2766 if (asus->driver->quirks->use_lid_flip_devid)
2767 lid_flip_tablet_mode_get_state(asus);
2768
2769 return 0;
2770}
2771
2772static int asus_hotk_restore(struct device *device)
2773{
2774 struct asus_wmi *asus = dev_get_drvdata(device);
2775 int bl;
2776
2777 /* Refresh both wlan rfkill state and pci hotplug */
2778 if (asus->wlan.rfkill)
2779 asus_rfkill_hotplug(asus);
2780
2781 if (asus->bluetooth.rfkill) {
2782 bl = !asus_wmi_get_devstate_simple(asus,
2783 ASUS_WMI_DEVID_BLUETOOTH);
2784 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2785 }
2786 if (asus->wimax.rfkill) {
2787 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2788 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2789 }
2790 if (asus->wwan3g.rfkill) {
2791 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2792 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2793 }
2794 if (asus->gps.rfkill) {
2795 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2796 rfkill_set_sw_state(asus->gps.rfkill, bl);
2797 }
2798 if (asus->uwb.rfkill) {
2799 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2800 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2801 }
2802 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2803 kbd_led_update(asus);
2804
2805 if (asus_wmi_has_fnlock_key(asus))
2806 asus_wmi_fnlock_update(asus);
2807
2808 if (asus->driver->quirks->use_lid_flip_devid)
2809 lid_flip_tablet_mode_get_state(asus);
2810
2811 return 0;
2812}
2813
2814static const struct dev_pm_ops asus_pm_ops = {
2815 .thaw = asus_hotk_thaw,
2816 .restore = asus_hotk_restore,
2817 .resume = asus_hotk_resume,
2818};
2819
2820/* Registration ***************************************************************/
2821
2822static int asus_wmi_probe(struct platform_device *pdev)
2823{
2824 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2825 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2826 int ret;
2827
2828 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2829 pr_warn("ASUS Management GUID not found\n");
2830 return -ENODEV;
2831 }
2832
2833 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2834 pr_warn("ASUS Event GUID not found\n");
2835 return -ENODEV;
2836 }
2837
2838 if (wdrv->probe) {
2839 ret = wdrv->probe(pdev);
2840 if (ret)
2841 return ret;
2842 }
2843
2844 return asus_wmi_add(pdev);
2845}
2846
2847static bool used;
2848
2849int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2850{
2851 struct platform_driver *platform_driver;
2852 struct platform_device *platform_device;
2853
2854 if (used)
2855 return -EBUSY;
2856
2857 platform_driver = &driver->platform_driver;
2858 platform_driver->remove = asus_wmi_remove;
2859 platform_driver->driver.owner = driver->owner;
2860 platform_driver->driver.name = driver->name;
2861 platform_driver->driver.pm = &asus_pm_ops;
2862
2863 platform_device = platform_create_bundle(platform_driver,
2864 asus_wmi_probe,
2865 NULL, 0, NULL, 0);
2866 if (IS_ERR(platform_device))
2867 return PTR_ERR(platform_device);
2868
2869 used = true;
2870 return 0;
2871}
2872EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2873
2874void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2875{
2876 platform_device_unregister(driver->platform_device);
2877 platform_driver_unregister(&driver->platform_driver);
2878 used = false;
2879}
2880EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2881
2882static int __init asus_wmi_init(void)
2883{
2884 pr_info("ASUS WMI generic driver loaded\n");
2885 return 0;
2886}
2887
2888static void __exit asus_wmi_exit(void)
2889{
2890 pr_info("ASUS WMI generic driver unloaded\n");
2891}
2892
2893module_init(asus_wmi_init);
2894module_exit(asus_wmi_exit);