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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-bionic-kernel.git] / drivers / platform / x86 / asus-wmi.c
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 #include <acpi/video.h>
51
52 #include "asus-wmi.h"
53
54 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
55 "Yong Wang <yong.y.wang@intel.com>");
56 MODULE_DESCRIPTION("Asus Generic WMI Driver");
57 MODULE_LICENSE("GPL");
58
59 #define to_platform_driver(drv) \
60 (container_of((drv), struct platform_driver, driver))
61
62 #define to_asus_wmi_driver(pdrv) \
63 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
64
65 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
66
67 #define NOTIFY_BRNUP_MIN 0x11
68 #define NOTIFY_BRNUP_MAX 0x1f
69 #define NOTIFY_BRNDOWN_MIN 0x20
70 #define NOTIFY_BRNDOWN_MAX 0x2e
71 #define NOTIFY_KBD_BRTUP 0xc4
72 #define NOTIFY_KBD_BRTDWN 0xc5
73
74 /* WMI Methods */
75 #define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
76 #define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
77 #define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
78 #define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
79 #define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
80 #define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
81 #define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
82 #define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
83 #define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
84 #define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
85 #define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
86 #define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
87 #define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
88 #define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
89 #define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
90 #define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
91 #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
92 #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
93 #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
94
95 #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
96
97 /* Wireless */
98 #define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
99 #define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
100 #define ASUS_WMI_DEVID_CWAP 0x00010003
101 #define ASUS_WMI_DEVID_WLAN 0x00010011
102 #define ASUS_WMI_DEVID_WLAN_LED 0x00010012
103 #define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
104 #define ASUS_WMI_DEVID_GPS 0x00010015
105 #define ASUS_WMI_DEVID_WIMAX 0x00010017
106 #define ASUS_WMI_DEVID_WWAN3G 0x00010019
107 #define ASUS_WMI_DEVID_UWB 0x00010021
108
109 /* Leds */
110 /* 0x000200XX and 0x000400XX */
111 #define ASUS_WMI_DEVID_LED1 0x00020011
112 #define ASUS_WMI_DEVID_LED2 0x00020012
113 #define ASUS_WMI_DEVID_LED3 0x00020013
114 #define ASUS_WMI_DEVID_LED4 0x00020014
115 #define ASUS_WMI_DEVID_LED5 0x00020015
116 #define ASUS_WMI_DEVID_LED6 0x00020016
117
118 /* Backlight and Brightness */
119 #define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
120 #define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
121 #define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
122 #define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
123
124 /* Misc */
125 #define ASUS_WMI_DEVID_CAMERA 0x00060013
126
127 /* Storage */
128 #define ASUS_WMI_DEVID_CARDREADER 0x00080013
129
130 /* Input */
131 #define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
132 #define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
133
134 /* Fan, Thermal */
135 #define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
136 #define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
137
138 /* Power */
139 #define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
140
141 /* Deep S3 / Resume on LID open */
142 #define ASUS_WMI_DEVID_LID_RESUME 0x00120031
143
144 /* DSTS masks */
145 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
146 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
147 #define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
148 #define ASUS_WMI_DSTS_USER_BIT 0x00020000
149 #define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
150 #define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
151 #define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
152
153 struct bios_args {
154 u32 arg0;
155 u32 arg1;
156 } __packed;
157
158 /*
159 * <platform>/ - debugfs root directory
160 * dev_id - current dev_id
161 * ctrl_param - current ctrl_param
162 * method_id - current method_id
163 * devs - call DEVS(dev_id, ctrl_param) and print result
164 * dsts - call DSTS(dev_id) and print result
165 * call - call method_id(dev_id, ctrl_param) and print result
166 */
167 struct asus_wmi_debug {
168 struct dentry *root;
169 u32 method_id;
170 u32 dev_id;
171 u32 ctrl_param;
172 };
173
174 struct asus_rfkill {
175 struct asus_wmi *asus;
176 struct rfkill *rfkill;
177 u32 dev_id;
178 };
179
180 struct asus_wmi {
181 int dsts_id;
182 int spec;
183 int sfun;
184
185 struct input_dev *inputdev;
186 struct backlight_device *backlight_device;
187 struct device *hwmon_device;
188 struct platform_device *platform_device;
189
190 struct led_classdev tpd_led;
191 int tpd_led_wk;
192 struct led_classdev kbd_led;
193 int kbd_led_wk;
194 struct workqueue_struct *led_workqueue;
195 struct work_struct tpd_led_work;
196 struct work_struct kbd_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 struct hotplug_slot *hotplug_slot;
206 struct mutex hotplug_lock;
207 struct mutex wmi_lock;
208 struct workqueue_struct *hotplug_workqueue;
209 struct work_struct hotplug_work;
210
211 struct asus_wmi_debug debug;
212
213 struct asus_wmi_driver *driver;
214 };
215
216 static int asus_wmi_input_init(struct asus_wmi *asus)
217 {
218 int err;
219
220 asus->inputdev = input_allocate_device();
221 if (!asus->inputdev)
222 return -ENOMEM;
223
224 asus->inputdev->name = asus->driver->input_name;
225 asus->inputdev->phys = asus->driver->input_phys;
226 asus->inputdev->id.bustype = BUS_HOST;
227 asus->inputdev->dev.parent = &asus->platform_device->dev;
228 set_bit(EV_REP, asus->inputdev->evbit);
229
230 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
231 if (err)
232 goto err_free_dev;
233
234 err = input_register_device(asus->inputdev);
235 if (err)
236 goto err_free_keymap;
237
238 return 0;
239
240 err_free_keymap:
241 sparse_keymap_free(asus->inputdev);
242 err_free_dev:
243 input_free_device(asus->inputdev);
244 return err;
245 }
246
247 static void asus_wmi_input_exit(struct asus_wmi *asus)
248 {
249 if (asus->inputdev) {
250 sparse_keymap_free(asus->inputdev);
251 input_unregister_device(asus->inputdev);
252 }
253
254 asus->inputdev = NULL;
255 }
256
257 static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
258 u32 *retval)
259 {
260 struct bios_args args = {
261 .arg0 = arg0,
262 .arg1 = arg1,
263 };
264 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
265 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
266 acpi_status status;
267 union acpi_object *obj;
268 u32 tmp;
269
270 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
271 &input, &output);
272
273 if (ACPI_FAILURE(status))
274 goto exit;
275
276 obj = (union acpi_object *)output.pointer;
277 if (obj && obj->type == ACPI_TYPE_INTEGER)
278 tmp = (u32) obj->integer.value;
279 else
280 tmp = 0;
281
282 if (retval)
283 *retval = tmp;
284
285 kfree(obj);
286
287 exit:
288 if (ACPI_FAILURE(status))
289 return -EIO;
290
291 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
292 return -ENODEV;
293
294 return 0;
295 }
296
297 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
298 {
299 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
300 }
301
302 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
303 u32 *retval)
304 {
305 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
306 ctrl_param, retval);
307 }
308
309 /* Helper for special devices with magic return codes */
310 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
311 u32 dev_id, u32 mask)
312 {
313 u32 retval = 0;
314 int err;
315
316 err = asus_wmi_get_devstate(asus, dev_id, &retval);
317
318 if (err < 0)
319 return err;
320
321 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
322 return -ENODEV;
323
324 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
325 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
326 return -ENODEV;
327 }
328
329 return retval & mask;
330 }
331
332 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
333 {
334 return asus_wmi_get_devstate_bits(asus, dev_id,
335 ASUS_WMI_DSTS_STATUS_BIT);
336 }
337
338 /*
339 * LEDs
340 */
341 /*
342 * These functions actually update the LED's, and are called from a
343 * workqueue. By doing this as separate work rather than when the LED
344 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
345 * potentially bad time, such as a timer interrupt.
346 */
347 static void tpd_led_update(struct work_struct *work)
348 {
349 int ctrl_param;
350 struct asus_wmi *asus;
351
352 asus = container_of(work, struct asus_wmi, tpd_led_work);
353
354 ctrl_param = asus->tpd_led_wk;
355 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
356 }
357
358 static void tpd_led_set(struct led_classdev *led_cdev,
359 enum led_brightness value)
360 {
361 struct asus_wmi *asus;
362
363 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
364
365 asus->tpd_led_wk = !!value;
366 queue_work(asus->led_workqueue, &asus->tpd_led_work);
367 }
368
369 static int read_tpd_led_state(struct asus_wmi *asus)
370 {
371 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
372 }
373
374 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
375 {
376 struct asus_wmi *asus;
377
378 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
379
380 return read_tpd_led_state(asus);
381 }
382
383 static void kbd_led_update(struct work_struct *work)
384 {
385 int ctrl_param = 0;
386 struct asus_wmi *asus;
387
388 asus = container_of(work, struct asus_wmi, kbd_led_work);
389
390 /*
391 * bits 0-2: level
392 * bit 7: light on/off
393 */
394 if (asus->kbd_led_wk > 0)
395 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
396
397 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
398 }
399
400 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
401 {
402 int retval;
403
404 /*
405 * bits 0-2: level
406 * bit 7: light on/off
407 * bit 8-10: environment (0: dark, 1: normal, 2: light)
408 * bit 17: status unknown
409 */
410 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
411 0xFFFF);
412
413 /* Unknown status is considered as off */
414 if (retval == 0x8000)
415 retval = 0;
416
417 if (retval >= 0) {
418 if (level)
419 *level = retval & 0x7F;
420 if (env)
421 *env = (retval >> 8) & 0x7F;
422 retval = 0;
423 }
424
425 return retval;
426 }
427
428 static void kbd_led_set(struct led_classdev *led_cdev,
429 enum led_brightness value)
430 {
431 struct asus_wmi *asus;
432
433 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
434
435 if (value > asus->kbd_led.max_brightness)
436 value = asus->kbd_led.max_brightness;
437 else if (value < 0)
438 value = 0;
439
440 asus->kbd_led_wk = value;
441 queue_work(asus->led_workqueue, &asus->kbd_led_work);
442 }
443
444 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
445 {
446 struct asus_wmi *asus;
447 int retval, value;
448
449 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
450
451 retval = kbd_led_read(asus, &value, NULL);
452
453 if (retval < 0)
454 return retval;
455
456 return value;
457 }
458
459 static void asus_wmi_led_exit(struct asus_wmi *asus)
460 {
461 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
462 led_classdev_unregister(&asus->kbd_led);
463 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
464 led_classdev_unregister(&asus->tpd_led);
465 if (asus->led_workqueue)
466 destroy_workqueue(asus->led_workqueue);
467 }
468
469 static int asus_wmi_led_init(struct asus_wmi *asus)
470 {
471 int rv = 0;
472
473 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
474 if (!asus->led_workqueue)
475 return -ENOMEM;
476
477 if (read_tpd_led_state(asus) >= 0) {
478 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
479
480 asus->tpd_led.name = "asus::touchpad";
481 asus->tpd_led.brightness_set = tpd_led_set;
482 asus->tpd_led.brightness_get = tpd_led_get;
483 asus->tpd_led.max_brightness = 1;
484
485 rv = led_classdev_register(&asus->platform_device->dev,
486 &asus->tpd_led);
487 if (rv)
488 goto error;
489 }
490
491 if (kbd_led_read(asus, NULL, NULL) >= 0) {
492 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
493
494 asus->kbd_led.name = "asus::kbd_backlight";
495 asus->kbd_led.brightness_set = kbd_led_set;
496 asus->kbd_led.brightness_get = kbd_led_get;
497 asus->kbd_led.max_brightness = 3;
498
499 rv = led_classdev_register(&asus->platform_device->dev,
500 &asus->kbd_led);
501 }
502
503 error:
504 if (rv)
505 asus_wmi_led_exit(asus);
506
507 return rv;
508 }
509
510
511 /*
512 * PCI hotplug (for wlan rfkill)
513 */
514 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
515 {
516 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
517
518 if (result < 0)
519 return false;
520 return !result;
521 }
522
523 static void asus_rfkill_hotplug(struct asus_wmi *asus)
524 {
525 struct pci_dev *dev;
526 struct pci_bus *bus;
527 bool blocked;
528 bool absent;
529 u32 l;
530
531 mutex_lock(&asus->wmi_lock);
532 blocked = asus_wlan_rfkill_blocked(asus);
533 mutex_unlock(&asus->wmi_lock);
534
535 mutex_lock(&asus->hotplug_lock);
536
537 if (asus->wlan.rfkill)
538 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
539
540 if (asus->hotplug_slot) {
541 bus = pci_find_bus(0, 1);
542 if (!bus) {
543 pr_warn("Unable to find PCI bus 1?\n");
544 goto out_unlock;
545 }
546
547 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
548 pr_err("Unable to read PCI config space?\n");
549 goto out_unlock;
550 }
551 absent = (l == 0xffffffff);
552
553 if (blocked != absent) {
554 pr_warn("BIOS says wireless lan is %s, "
555 "but the pci device is %s\n",
556 blocked ? "blocked" : "unblocked",
557 absent ? "absent" : "present");
558 pr_warn("skipped wireless hotplug as probably "
559 "inappropriate for this model\n");
560 goto out_unlock;
561 }
562
563 if (!blocked) {
564 dev = pci_get_slot(bus, 0);
565 if (dev) {
566 /* Device already present */
567 pci_dev_put(dev);
568 goto out_unlock;
569 }
570 dev = pci_scan_single_device(bus, 0);
571 if (dev) {
572 pci_bus_assign_resources(bus);
573 if (pci_bus_add_device(dev))
574 pr_err("Unable to hotplug wifi\n");
575 }
576 } else {
577 dev = pci_get_slot(bus, 0);
578 if (dev) {
579 pci_stop_and_remove_bus_device(dev);
580 pci_dev_put(dev);
581 }
582 }
583 }
584
585 out_unlock:
586 mutex_unlock(&asus->hotplug_lock);
587 }
588
589 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
590 {
591 struct asus_wmi *asus = data;
592
593 if (event != ACPI_NOTIFY_BUS_CHECK)
594 return;
595
596 /*
597 * We can't call directly asus_rfkill_hotplug because most
598 * of the time WMBC is still being executed and not reetrant.
599 * There is currently no way to tell ACPICA that we want this
600 * method to be serialized, we schedule a asus_rfkill_hotplug
601 * call later, in a safer context.
602 */
603 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
604 }
605
606 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
607 {
608 acpi_status status;
609 acpi_handle handle;
610
611 status = acpi_get_handle(NULL, node, &handle);
612
613 if (ACPI_SUCCESS(status)) {
614 status = acpi_install_notify_handler(handle,
615 ACPI_SYSTEM_NOTIFY,
616 asus_rfkill_notify, asus);
617 if (ACPI_FAILURE(status))
618 pr_warn("Failed to register notify on %s\n", node);
619 } else
620 return -ENODEV;
621
622 return 0;
623 }
624
625 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
626 {
627 acpi_status status = AE_OK;
628 acpi_handle handle;
629
630 status = acpi_get_handle(NULL, node, &handle);
631
632 if (ACPI_SUCCESS(status)) {
633 status = acpi_remove_notify_handler(handle,
634 ACPI_SYSTEM_NOTIFY,
635 asus_rfkill_notify);
636 if (ACPI_FAILURE(status))
637 pr_err("Error removing rfkill notify handler %s\n",
638 node);
639 }
640 }
641
642 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
643 u8 *value)
644 {
645 struct asus_wmi *asus = hotplug_slot->private;
646 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
647
648 if (result < 0)
649 return result;
650
651 *value = !!result;
652 return 0;
653 }
654
655 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
656 {
657 kfree(hotplug_slot->info);
658 kfree(hotplug_slot);
659 }
660
661 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
662 .owner = THIS_MODULE,
663 .get_adapter_status = asus_get_adapter_status,
664 .get_power_status = asus_get_adapter_status,
665 };
666
667 static void asus_hotplug_work(struct work_struct *work)
668 {
669 struct asus_wmi *asus;
670
671 asus = container_of(work, struct asus_wmi, hotplug_work);
672 asus_rfkill_hotplug(asus);
673 }
674
675 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
676 {
677 int ret = -ENOMEM;
678 struct pci_bus *bus = pci_find_bus(0, 1);
679
680 if (!bus) {
681 pr_err("Unable to find wifi PCI bus\n");
682 return -ENODEV;
683 }
684
685 asus->hotplug_workqueue =
686 create_singlethread_workqueue("hotplug_workqueue");
687 if (!asus->hotplug_workqueue)
688 goto error_workqueue;
689
690 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
691
692 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
693 if (!asus->hotplug_slot)
694 goto error_slot;
695
696 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
697 GFP_KERNEL);
698 if (!asus->hotplug_slot->info)
699 goto error_info;
700
701 asus->hotplug_slot->private = asus;
702 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
703 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
704 asus_get_adapter_status(asus->hotplug_slot,
705 &asus->hotplug_slot->info->adapter_status);
706
707 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
708 if (ret) {
709 pr_err("Unable to register hotplug slot - %d\n", ret);
710 goto error_register;
711 }
712
713 return 0;
714
715 error_register:
716 kfree(asus->hotplug_slot->info);
717 error_info:
718 kfree(asus->hotplug_slot);
719 asus->hotplug_slot = NULL;
720 error_slot:
721 destroy_workqueue(asus->hotplug_workqueue);
722 error_workqueue:
723 return ret;
724 }
725
726 /*
727 * Rfkill devices
728 */
729 static int asus_rfkill_set(void *data, bool blocked)
730 {
731 struct asus_rfkill *priv = data;
732 u32 ctrl_param = !blocked;
733 u32 dev_id = priv->dev_id;
734
735 /*
736 * If the user bit is set, BIOS can't set and record the wlan status,
737 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
738 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
739 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
740 * while setting the wlan status through WMI.
741 * This is also the behavior that windows app will do.
742 */
743 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
744 priv->asus->driver->wlan_ctrl_by_user)
745 dev_id = ASUS_WMI_DEVID_WLAN_LED;
746
747 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
748 }
749
750 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
751 {
752 struct asus_rfkill *priv = data;
753 int result;
754
755 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
756
757 if (result < 0)
758 return;
759
760 rfkill_set_sw_state(priv->rfkill, !result);
761 }
762
763 static int asus_rfkill_wlan_set(void *data, bool blocked)
764 {
765 struct asus_rfkill *priv = data;
766 struct asus_wmi *asus = priv->asus;
767 int ret;
768
769 /*
770 * This handler is enabled only if hotplug is enabled.
771 * In this case, the asus_wmi_set_devstate() will
772 * trigger a wmi notification and we need to wait
773 * this call to finish before being able to call
774 * any wmi method
775 */
776 mutex_lock(&asus->wmi_lock);
777 ret = asus_rfkill_set(data, blocked);
778 mutex_unlock(&asus->wmi_lock);
779 return ret;
780 }
781
782 static const struct rfkill_ops asus_rfkill_wlan_ops = {
783 .set_block = asus_rfkill_wlan_set,
784 .query = asus_rfkill_query,
785 };
786
787 static const struct rfkill_ops asus_rfkill_ops = {
788 .set_block = asus_rfkill_set,
789 .query = asus_rfkill_query,
790 };
791
792 static int asus_new_rfkill(struct asus_wmi *asus,
793 struct asus_rfkill *arfkill,
794 const char *name, enum rfkill_type type, int dev_id)
795 {
796 int result = asus_wmi_get_devstate_simple(asus, dev_id);
797 struct rfkill **rfkill = &arfkill->rfkill;
798
799 if (result < 0)
800 return result;
801
802 arfkill->dev_id = dev_id;
803 arfkill->asus = asus;
804
805 if (dev_id == ASUS_WMI_DEVID_WLAN &&
806 asus->driver->quirks->hotplug_wireless)
807 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
808 &asus_rfkill_wlan_ops, arfkill);
809 else
810 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
811 &asus_rfkill_ops, arfkill);
812
813 if (!*rfkill)
814 return -EINVAL;
815
816 rfkill_init_sw_state(*rfkill, !result);
817 result = rfkill_register(*rfkill);
818 if (result) {
819 rfkill_destroy(*rfkill);
820 *rfkill = NULL;
821 return result;
822 }
823 return 0;
824 }
825
826 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
827 {
828 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
829 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
830 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
831 if (asus->wlan.rfkill) {
832 rfkill_unregister(asus->wlan.rfkill);
833 rfkill_destroy(asus->wlan.rfkill);
834 asus->wlan.rfkill = NULL;
835 }
836 /*
837 * Refresh pci hotplug in case the rfkill state was changed after
838 * asus_unregister_rfkill_notifier()
839 */
840 asus_rfkill_hotplug(asus);
841 if (asus->hotplug_slot)
842 pci_hp_deregister(asus->hotplug_slot);
843 if (asus->hotplug_workqueue)
844 destroy_workqueue(asus->hotplug_workqueue);
845
846 if (asus->bluetooth.rfkill) {
847 rfkill_unregister(asus->bluetooth.rfkill);
848 rfkill_destroy(asus->bluetooth.rfkill);
849 asus->bluetooth.rfkill = NULL;
850 }
851 if (asus->wimax.rfkill) {
852 rfkill_unregister(asus->wimax.rfkill);
853 rfkill_destroy(asus->wimax.rfkill);
854 asus->wimax.rfkill = NULL;
855 }
856 if (asus->wwan3g.rfkill) {
857 rfkill_unregister(asus->wwan3g.rfkill);
858 rfkill_destroy(asus->wwan3g.rfkill);
859 asus->wwan3g.rfkill = NULL;
860 }
861 if (asus->gps.rfkill) {
862 rfkill_unregister(asus->gps.rfkill);
863 rfkill_destroy(asus->gps.rfkill);
864 asus->gps.rfkill = NULL;
865 }
866 if (asus->uwb.rfkill) {
867 rfkill_unregister(asus->uwb.rfkill);
868 rfkill_destroy(asus->uwb.rfkill);
869 asus->uwb.rfkill = NULL;
870 }
871 }
872
873 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
874 {
875 int result = 0;
876
877 mutex_init(&asus->hotplug_lock);
878 mutex_init(&asus->wmi_lock);
879
880 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
881 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
882
883 if (result && result != -ENODEV)
884 goto exit;
885
886 result = asus_new_rfkill(asus, &asus->bluetooth,
887 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
888 ASUS_WMI_DEVID_BLUETOOTH);
889
890 if (result && result != -ENODEV)
891 goto exit;
892
893 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
894 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
895
896 if (result && result != -ENODEV)
897 goto exit;
898
899 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
900 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
901
902 if (result && result != -ENODEV)
903 goto exit;
904
905 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
906 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
907
908 if (result && result != -ENODEV)
909 goto exit;
910
911 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
912 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
913
914 if (result && result != -ENODEV)
915 goto exit;
916
917 if (!asus->driver->quirks->hotplug_wireless)
918 goto exit;
919
920 result = asus_setup_pci_hotplug(asus);
921 /*
922 * If we get -EBUSY then something else is handling the PCI hotplug -
923 * don't fail in this case
924 */
925 if (result == -EBUSY)
926 result = 0;
927
928 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
929 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
930 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
931 /*
932 * Refresh pci hotplug in case the rfkill state was changed during
933 * setup.
934 */
935 asus_rfkill_hotplug(asus);
936
937 exit:
938 if (result && result != -ENODEV)
939 asus_wmi_rfkill_exit(asus);
940
941 if (result == -ENODEV)
942 result = 0;
943
944 return result;
945 }
946
947 /*
948 * Hwmon device
949 */
950 static ssize_t asus_hwmon_pwm1(struct device *dev,
951 struct device_attribute *attr,
952 char *buf)
953 {
954 struct asus_wmi *asus = dev_get_drvdata(dev);
955 u32 value;
956 int err;
957
958 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
959
960 if (err < 0)
961 return err;
962
963 value &= 0xFF;
964
965 if (value == 1) /* Low Speed */
966 value = 85;
967 else if (value == 2)
968 value = 170;
969 else if (value == 3)
970 value = 255;
971 else if (value != 0) {
972 pr_err("Unknown fan speed %#x", value);
973 value = -1;
974 }
975
976 return sprintf(buf, "%d\n", value);
977 }
978
979 static ssize_t asus_hwmon_temp1(struct device *dev,
980 struct device_attribute *attr,
981 char *buf)
982 {
983 struct asus_wmi *asus = dev_get_drvdata(dev);
984 u32 value;
985 int err;
986
987 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
988
989 if (err < 0)
990 return err;
991
992 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
993
994 return sprintf(buf, "%d\n", value);
995 }
996
997 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
998 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
999
1000 static ssize_t
1001 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1002 {
1003 return sprintf(buf, "asus\n");
1004 }
1005 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1006
1007 static struct attribute *hwmon_attributes[] = {
1008 &sensor_dev_attr_pwm1.dev_attr.attr,
1009 &sensor_dev_attr_temp1_input.dev_attr.attr,
1010 &sensor_dev_attr_name.dev_attr.attr,
1011 NULL
1012 };
1013
1014 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1015 struct attribute *attr, int idx)
1016 {
1017 struct device *dev = container_of(kobj, struct device, kobj);
1018 struct platform_device *pdev = to_platform_device(dev->parent);
1019 struct asus_wmi *asus = platform_get_drvdata(pdev);
1020 bool ok = true;
1021 int dev_id = -1;
1022 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1023
1024 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1025 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1026 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1027 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1028
1029 if (dev_id != -1) {
1030 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1031
1032 if (err < 0)
1033 return 0; /* can't return negative here */
1034 }
1035
1036 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1037 /*
1038 * We need to find a better way, probably using sfun,
1039 * bits or spec ...
1040 * Currently we disable it if:
1041 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1042 * - reverved bits are non-zero
1043 * - sfun and presence bit are not set
1044 */
1045 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1046 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1047 ok = false;
1048 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1049 /* If value is zero, something is clearly wrong */
1050 if (value == 0)
1051 ok = false;
1052 }
1053
1054 return ok ? attr->mode : 0;
1055 }
1056
1057 static struct attribute_group hwmon_attribute_group = {
1058 .is_visible = asus_hwmon_sysfs_is_visible,
1059 .attrs = hwmon_attributes
1060 };
1061
1062 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1063 {
1064 struct device *hwmon;
1065
1066 hwmon = asus->hwmon_device;
1067 if (!hwmon)
1068 return;
1069 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1070 hwmon_device_unregister(hwmon);
1071 asus->hwmon_device = NULL;
1072 }
1073
1074 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1075 {
1076 struct device *hwmon;
1077 int result;
1078
1079 hwmon = hwmon_device_register(&asus->platform_device->dev);
1080 if (IS_ERR(hwmon)) {
1081 pr_err("Could not register asus hwmon device\n");
1082 return PTR_ERR(hwmon);
1083 }
1084 dev_set_drvdata(hwmon, asus);
1085 asus->hwmon_device = hwmon;
1086 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1087 if (result)
1088 asus_wmi_hwmon_exit(asus);
1089 return result;
1090 }
1091
1092 /*
1093 * Backlight
1094 */
1095 static int read_backlight_power(struct asus_wmi *asus)
1096 {
1097 int ret;
1098 if (asus->driver->quirks->store_backlight_power)
1099 ret = !asus->driver->panel_power;
1100 else
1101 ret = asus_wmi_get_devstate_simple(asus,
1102 ASUS_WMI_DEVID_BACKLIGHT);
1103
1104 if (ret < 0)
1105 return ret;
1106
1107 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1108 }
1109
1110 static int read_brightness_max(struct asus_wmi *asus)
1111 {
1112 u32 retval;
1113 int err;
1114
1115 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1116
1117 if (err < 0)
1118 return err;
1119
1120 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1121 retval >>= 8;
1122
1123 if (!retval)
1124 return -ENODEV;
1125
1126 return retval;
1127 }
1128
1129 static int read_brightness(struct backlight_device *bd)
1130 {
1131 struct asus_wmi *asus = bl_get_data(bd);
1132 u32 retval;
1133 int err;
1134
1135 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1136
1137 if (err < 0)
1138 return err;
1139
1140 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1141 }
1142
1143 static u32 get_scalar_command(struct backlight_device *bd)
1144 {
1145 struct asus_wmi *asus = bl_get_data(bd);
1146 u32 ctrl_param = 0;
1147
1148 if ((asus->driver->brightness < bd->props.brightness) ||
1149 bd->props.brightness == bd->props.max_brightness)
1150 ctrl_param = 0x00008001;
1151 else if ((asus->driver->brightness > bd->props.brightness) ||
1152 bd->props.brightness == 0)
1153 ctrl_param = 0x00008000;
1154
1155 asus->driver->brightness = bd->props.brightness;
1156
1157 return ctrl_param;
1158 }
1159
1160 static int update_bl_status(struct backlight_device *bd)
1161 {
1162 struct asus_wmi *asus = bl_get_data(bd);
1163 u32 ctrl_param;
1164 int power, err = 0;
1165
1166 power = read_backlight_power(asus);
1167 if (power != -ENODEV && bd->props.power != power) {
1168 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1169 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1170 ctrl_param, NULL);
1171 if (asus->driver->quirks->store_backlight_power)
1172 asus->driver->panel_power = bd->props.power;
1173
1174 /* When using scalar brightness, updating the brightness
1175 * will mess with the backlight power */
1176 if (asus->driver->quirks->scalar_panel_brightness)
1177 return err;
1178 }
1179
1180 if (asus->driver->quirks->scalar_panel_brightness)
1181 ctrl_param = get_scalar_command(bd);
1182 else
1183 ctrl_param = bd->props.brightness;
1184
1185 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1186 ctrl_param, NULL);
1187
1188 return err;
1189 }
1190
1191 static const struct backlight_ops asus_wmi_bl_ops = {
1192 .get_brightness = read_brightness,
1193 .update_status = update_bl_status,
1194 };
1195
1196 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1197 {
1198 struct backlight_device *bd = asus->backlight_device;
1199 int old = bd->props.brightness;
1200 int new = old;
1201
1202 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1203 new = code - NOTIFY_BRNUP_MIN + 1;
1204 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1205 new = code - NOTIFY_BRNDOWN_MIN;
1206
1207 bd->props.brightness = new;
1208 backlight_update_status(bd);
1209 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1210
1211 return old;
1212 }
1213
1214 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1215 {
1216 struct backlight_device *bd;
1217 struct backlight_properties props;
1218 int max;
1219 int power;
1220
1221 max = read_brightness_max(asus);
1222
1223 if (max == -ENODEV)
1224 max = 0;
1225 else if (max < 0)
1226 return max;
1227
1228 power = read_backlight_power(asus);
1229
1230 if (power == -ENODEV)
1231 power = FB_BLANK_UNBLANK;
1232 else if (power < 0)
1233 return power;
1234
1235 memset(&props, 0, sizeof(struct backlight_properties));
1236 props.type = BACKLIGHT_PLATFORM;
1237 props.max_brightness = max;
1238 bd = backlight_device_register(asus->driver->name,
1239 &asus->platform_device->dev, asus,
1240 &asus_wmi_bl_ops, &props);
1241 if (IS_ERR(bd)) {
1242 pr_err("Could not register backlight device\n");
1243 return PTR_ERR(bd);
1244 }
1245
1246 asus->backlight_device = bd;
1247
1248 if (asus->driver->quirks->store_backlight_power)
1249 asus->driver->panel_power = power;
1250
1251 bd->props.brightness = read_brightness(bd);
1252 bd->props.power = power;
1253 backlight_update_status(bd);
1254
1255 asus->driver->brightness = bd->props.brightness;
1256
1257 return 0;
1258 }
1259
1260 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1261 {
1262 if (asus->backlight_device)
1263 backlight_device_unregister(asus->backlight_device);
1264
1265 asus->backlight_device = NULL;
1266 }
1267
1268 static void asus_wmi_notify(u32 value, void *context)
1269 {
1270 struct asus_wmi *asus = context;
1271 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1272 union acpi_object *obj;
1273 acpi_status status;
1274 int code;
1275 int orig_code;
1276 unsigned int key_value = 1;
1277 bool autorelease = 1;
1278
1279 status = wmi_get_event_data(value, &response);
1280 if (status != AE_OK) {
1281 pr_err("bad event status 0x%x\n", status);
1282 return;
1283 }
1284
1285 obj = (union acpi_object *)response.pointer;
1286
1287 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1288 goto exit;
1289
1290 code = obj->integer.value;
1291 orig_code = code;
1292
1293 if (asus->driver->key_filter) {
1294 asus->driver->key_filter(asus->driver, &code, &key_value,
1295 &autorelease);
1296 if (code == ASUS_WMI_KEY_IGNORE)
1297 goto exit;
1298 }
1299
1300 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1301 code = NOTIFY_BRNUP_MIN;
1302 else if (code >= NOTIFY_BRNDOWN_MIN &&
1303 code <= NOTIFY_BRNDOWN_MAX)
1304 code = NOTIFY_BRNDOWN_MIN;
1305
1306 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1307 if (!acpi_video_backlight_support())
1308 asus_wmi_backlight_notify(asus, orig_code);
1309 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1310 key_value, autorelease))
1311 pr_info("Unknown key %x pressed\n", code);
1312
1313 exit:
1314 kfree(obj);
1315 }
1316
1317 /*
1318 * Sys helpers
1319 */
1320 static int parse_arg(const char *buf, unsigned long count, int *val)
1321 {
1322 if (!count)
1323 return 0;
1324 if (sscanf(buf, "%i", val) != 1)
1325 return -EINVAL;
1326 return count;
1327 }
1328
1329 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1330 const char *buf, size_t count)
1331 {
1332 u32 retval;
1333 int rv, err, value;
1334
1335 value = asus_wmi_get_devstate_simple(asus, devid);
1336 if (value == -ENODEV) /* Check device presence */
1337 return value;
1338
1339 rv = parse_arg(buf, count, &value);
1340 err = asus_wmi_set_devstate(devid, value, &retval);
1341
1342 if (err < 0)
1343 return err;
1344
1345 return rv;
1346 }
1347
1348 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1349 {
1350 int value = asus_wmi_get_devstate_simple(asus, devid);
1351
1352 if (value < 0)
1353 return value;
1354
1355 return sprintf(buf, "%d\n", value);
1356 }
1357
1358 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1359 static ssize_t show_##_name(struct device *dev, \
1360 struct device_attribute *attr, \
1361 char *buf) \
1362 { \
1363 struct asus_wmi *asus = dev_get_drvdata(dev); \
1364 \
1365 return show_sys_wmi(asus, _cm, buf); \
1366 } \
1367 static ssize_t store_##_name(struct device *dev, \
1368 struct device_attribute *attr, \
1369 const char *buf, size_t count) \
1370 { \
1371 struct asus_wmi *asus = dev_get_drvdata(dev); \
1372 \
1373 return store_sys_wmi(asus, _cm, buf, count); \
1374 } \
1375 static struct device_attribute dev_attr_##_name = { \
1376 .attr = { \
1377 .name = __stringify(_name), \
1378 .mode = _mode }, \
1379 .show = show_##_name, \
1380 .store = store_##_name, \
1381 }
1382
1383 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1384 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1385 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1386 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
1387
1388 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1389 const char *buf, size_t count)
1390 {
1391 int value, rv;
1392
1393 if (!count || sscanf(buf, "%i", &value) != 1)
1394 return -EINVAL;
1395 if (value < 0 || value > 2)
1396 return -EINVAL;
1397
1398 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1399 if (rv < 0)
1400 return rv;
1401
1402 return count;
1403 }
1404
1405 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1406
1407 static struct attribute *platform_attributes[] = {
1408 &dev_attr_cpufv.attr,
1409 &dev_attr_camera.attr,
1410 &dev_attr_cardr.attr,
1411 &dev_attr_touchpad.attr,
1412 &dev_attr_lid_resume.attr,
1413 NULL
1414 };
1415
1416 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1417 struct attribute *attr, int idx)
1418 {
1419 struct device *dev = container_of(kobj, struct device, kobj);
1420 struct platform_device *pdev = to_platform_device(dev);
1421 struct asus_wmi *asus = platform_get_drvdata(pdev);
1422 bool ok = true;
1423 int devid = -1;
1424
1425 if (attr == &dev_attr_camera.attr)
1426 devid = ASUS_WMI_DEVID_CAMERA;
1427 else if (attr == &dev_attr_cardr.attr)
1428 devid = ASUS_WMI_DEVID_CARDREADER;
1429 else if (attr == &dev_attr_touchpad.attr)
1430 devid = ASUS_WMI_DEVID_TOUCHPAD;
1431 else if (attr == &dev_attr_lid_resume.attr)
1432 devid = ASUS_WMI_DEVID_LID_RESUME;
1433
1434 if (devid != -1)
1435 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1436
1437 return ok ? attr->mode : 0;
1438 }
1439
1440 static struct attribute_group platform_attribute_group = {
1441 .is_visible = asus_sysfs_is_visible,
1442 .attrs = platform_attributes
1443 };
1444
1445 static void asus_wmi_sysfs_exit(struct platform_device *device)
1446 {
1447 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1448 }
1449
1450 static int asus_wmi_sysfs_init(struct platform_device *device)
1451 {
1452 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1453 }
1454
1455 /*
1456 * Platform device
1457 */
1458 static int asus_wmi_platform_init(struct asus_wmi *asus)
1459 {
1460 int rv;
1461
1462 /* INIT enable hotkeys on some models */
1463 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1464 pr_info("Initialization: %#x", rv);
1465
1466 /* We don't know yet what to do with this version... */
1467 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1468 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1469 asus->spec = rv;
1470 }
1471
1472 /*
1473 * The SFUN method probably allows the original driver to get the list
1474 * of features supported by a given model. For now, 0x0100 or 0x0800
1475 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1476 * The significance of others is yet to be found.
1477 */
1478 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1479 pr_info("SFUN value: %#x", rv);
1480 asus->sfun = rv;
1481 }
1482
1483 /*
1484 * Eee PC and Notebooks seems to have different method_id for DSTS,
1485 * but it may also be related to the BIOS's SPEC.
1486 * Note, on most Eeepc, there is no way to check if a method exist
1487 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1488 * but once again, SPEC may probably be used for that kind of things.
1489 */
1490 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1491 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1492 else
1493 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1494
1495 /* CWAP allow to define the behavior of the Fn+F2 key,
1496 * this method doesn't seems to be present on Eee PCs */
1497 if (asus->driver->quirks->wapf >= 0)
1498 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1499 asus->driver->quirks->wapf, NULL);
1500
1501 return asus_wmi_sysfs_init(asus->platform_device);
1502 }
1503
1504 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1505 {
1506 asus_wmi_sysfs_exit(asus->platform_device);
1507 }
1508
1509 /*
1510 * debugfs
1511 */
1512 struct asus_wmi_debugfs_node {
1513 struct asus_wmi *asus;
1514 char *name;
1515 int (*show) (struct seq_file *m, void *data);
1516 };
1517
1518 static int show_dsts(struct seq_file *m, void *data)
1519 {
1520 struct asus_wmi *asus = m->private;
1521 int err;
1522 u32 retval = -1;
1523
1524 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1525
1526 if (err < 0)
1527 return err;
1528
1529 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1530
1531 return 0;
1532 }
1533
1534 static int show_devs(struct seq_file *m, void *data)
1535 {
1536 struct asus_wmi *asus = m->private;
1537 int err;
1538 u32 retval = -1;
1539
1540 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1541 &retval);
1542
1543 if (err < 0)
1544 return err;
1545
1546 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1547 asus->debug.ctrl_param, retval);
1548
1549 return 0;
1550 }
1551
1552 static int show_call(struct seq_file *m, void *data)
1553 {
1554 struct asus_wmi *asus = m->private;
1555 struct bios_args args = {
1556 .arg0 = asus->debug.dev_id,
1557 .arg1 = asus->debug.ctrl_param,
1558 };
1559 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1560 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1561 union acpi_object *obj;
1562 acpi_status status;
1563
1564 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1565 1, asus->debug.method_id,
1566 &input, &output);
1567
1568 if (ACPI_FAILURE(status))
1569 return -EIO;
1570
1571 obj = (union acpi_object *)output.pointer;
1572 if (obj && obj->type == ACPI_TYPE_INTEGER)
1573 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1574 asus->debug.dev_id, asus->debug.ctrl_param,
1575 (u32) obj->integer.value);
1576 else
1577 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1578 asus->debug.dev_id, asus->debug.ctrl_param,
1579 obj ? obj->type : -1);
1580
1581 kfree(obj);
1582
1583 return 0;
1584 }
1585
1586 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1587 {NULL, "devs", show_devs},
1588 {NULL, "dsts", show_dsts},
1589 {NULL, "call", show_call},
1590 };
1591
1592 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1593 {
1594 struct asus_wmi_debugfs_node *node = inode->i_private;
1595
1596 return single_open(file, node->show, node->asus);
1597 }
1598
1599 static const struct file_operations asus_wmi_debugfs_io_ops = {
1600 .owner = THIS_MODULE,
1601 .open = asus_wmi_debugfs_open,
1602 .read = seq_read,
1603 .llseek = seq_lseek,
1604 .release = single_release,
1605 };
1606
1607 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1608 {
1609 debugfs_remove_recursive(asus->debug.root);
1610 }
1611
1612 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1613 {
1614 struct dentry *dent;
1615 int i;
1616
1617 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1618 if (!asus->debug.root) {
1619 pr_err("failed to create debugfs directory");
1620 goto error_debugfs;
1621 }
1622
1623 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1624 asus->debug.root, &asus->debug.method_id);
1625 if (!dent)
1626 goto error_debugfs;
1627
1628 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1629 asus->debug.root, &asus->debug.dev_id);
1630 if (!dent)
1631 goto error_debugfs;
1632
1633 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1634 asus->debug.root, &asus->debug.ctrl_param);
1635 if (!dent)
1636 goto error_debugfs;
1637
1638 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1639 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1640
1641 node->asus = asus;
1642 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1643 asus->debug.root, node,
1644 &asus_wmi_debugfs_io_ops);
1645 if (!dent) {
1646 pr_err("failed to create debug file: %s\n", node->name);
1647 goto error_debugfs;
1648 }
1649 }
1650
1651 return 0;
1652
1653 error_debugfs:
1654 asus_wmi_debugfs_exit(asus);
1655 return -ENOMEM;
1656 }
1657
1658 /*
1659 * WMI Driver
1660 */
1661 static int asus_wmi_add(struct platform_device *pdev)
1662 {
1663 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1664 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1665 struct asus_wmi *asus;
1666 acpi_status status;
1667 int err;
1668 u32 result;
1669
1670 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1671 if (!asus)
1672 return -ENOMEM;
1673
1674 asus->driver = wdrv;
1675 asus->platform_device = pdev;
1676 wdrv->platform_device = pdev;
1677 platform_set_drvdata(asus->platform_device, asus);
1678
1679 if (wdrv->detect_quirks)
1680 wdrv->detect_quirks(asus->driver);
1681
1682 err = asus_wmi_platform_init(asus);
1683 if (err)
1684 goto fail_platform;
1685
1686 err = asus_wmi_input_init(asus);
1687 if (err)
1688 goto fail_input;
1689
1690 err = asus_wmi_hwmon_init(asus);
1691 if (err)
1692 goto fail_hwmon;
1693
1694 err = asus_wmi_led_init(asus);
1695 if (err)
1696 goto fail_leds;
1697
1698 err = asus_wmi_rfkill_init(asus);
1699 if (err)
1700 goto fail_rfkill;
1701
1702 if (asus->driver->quirks->wmi_backlight_power)
1703 acpi_video_dmi_promote_vendor();
1704 if (!acpi_video_backlight_support()) {
1705 pr_info("Disabling ACPI video driver\n");
1706 acpi_video_unregister();
1707 err = asus_wmi_backlight_init(asus);
1708 if (err && err != -ENODEV)
1709 goto fail_backlight;
1710 } else
1711 pr_info("Backlight controlled by ACPI video driver\n");
1712
1713 status = wmi_install_notify_handler(asus->driver->event_guid,
1714 asus_wmi_notify, asus);
1715 if (ACPI_FAILURE(status)) {
1716 pr_err("Unable to register notify handler - %d\n", status);
1717 err = -ENODEV;
1718 goto fail_wmi_handler;
1719 }
1720
1721 err = asus_wmi_debugfs_init(asus);
1722 if (err)
1723 goto fail_debugfs;
1724
1725 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
1726 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
1727 asus->driver->wlan_ctrl_by_user = 1;
1728
1729 return 0;
1730
1731 fail_debugfs:
1732 wmi_remove_notify_handler(asus->driver->event_guid);
1733 fail_wmi_handler:
1734 asus_wmi_backlight_exit(asus);
1735 fail_backlight:
1736 asus_wmi_rfkill_exit(asus);
1737 fail_rfkill:
1738 asus_wmi_led_exit(asus);
1739 fail_leds:
1740 asus_wmi_hwmon_exit(asus);
1741 fail_hwmon:
1742 asus_wmi_input_exit(asus);
1743 fail_input:
1744 asus_wmi_platform_exit(asus);
1745 fail_platform:
1746 kfree(asus);
1747 return err;
1748 }
1749
1750 static int asus_wmi_remove(struct platform_device *device)
1751 {
1752 struct asus_wmi *asus;
1753
1754 asus = platform_get_drvdata(device);
1755 wmi_remove_notify_handler(asus->driver->event_guid);
1756 asus_wmi_backlight_exit(asus);
1757 asus_wmi_input_exit(asus);
1758 asus_wmi_hwmon_exit(asus);
1759 asus_wmi_led_exit(asus);
1760 asus_wmi_rfkill_exit(asus);
1761 asus_wmi_debugfs_exit(asus);
1762 asus_wmi_platform_exit(asus);
1763
1764 kfree(asus);
1765 return 0;
1766 }
1767
1768 /*
1769 * Platform driver - hibernate/resume callbacks
1770 */
1771 static int asus_hotk_thaw(struct device *device)
1772 {
1773 struct asus_wmi *asus = dev_get_drvdata(device);
1774
1775 if (asus->wlan.rfkill) {
1776 bool wlan;
1777
1778 /*
1779 * Work around bios bug - acpi _PTS turns off the wireless led
1780 * during suspend. Normally it restores it on resume, but
1781 * we should kick it ourselves in case hibernation is aborted.
1782 */
1783 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1784 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1785 }
1786
1787 return 0;
1788 }
1789
1790 static int asus_hotk_restore(struct device *device)
1791 {
1792 struct asus_wmi *asus = dev_get_drvdata(device);
1793 int bl;
1794
1795 /* Refresh both wlan rfkill state and pci hotplug */
1796 if (asus->wlan.rfkill)
1797 asus_rfkill_hotplug(asus);
1798
1799 if (asus->bluetooth.rfkill) {
1800 bl = !asus_wmi_get_devstate_simple(asus,
1801 ASUS_WMI_DEVID_BLUETOOTH);
1802 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1803 }
1804 if (asus->wimax.rfkill) {
1805 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1806 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1807 }
1808 if (asus->wwan3g.rfkill) {
1809 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1810 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1811 }
1812 if (asus->gps.rfkill) {
1813 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1814 rfkill_set_sw_state(asus->gps.rfkill, bl);
1815 }
1816 if (asus->uwb.rfkill) {
1817 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1818 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1819 }
1820
1821 return 0;
1822 }
1823
1824 static const struct dev_pm_ops asus_pm_ops = {
1825 .thaw = asus_hotk_thaw,
1826 .restore = asus_hotk_restore,
1827 };
1828
1829 static int asus_wmi_probe(struct platform_device *pdev)
1830 {
1831 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1832 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1833 int ret;
1834
1835 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1836 pr_warn("Management GUID not found\n");
1837 return -ENODEV;
1838 }
1839
1840 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1841 pr_warn("Event GUID not found\n");
1842 return -ENODEV;
1843 }
1844
1845 if (wdrv->probe) {
1846 ret = wdrv->probe(pdev);
1847 if (ret)
1848 return ret;
1849 }
1850
1851 return asus_wmi_add(pdev);
1852 }
1853
1854 static bool used;
1855
1856 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1857 {
1858 struct platform_driver *platform_driver;
1859 struct platform_device *platform_device;
1860
1861 if (used)
1862 return -EBUSY;
1863
1864 platform_driver = &driver->platform_driver;
1865 platform_driver->remove = asus_wmi_remove;
1866 platform_driver->driver.owner = driver->owner;
1867 platform_driver->driver.name = driver->name;
1868 platform_driver->driver.pm = &asus_pm_ops;
1869
1870 platform_device = platform_create_bundle(platform_driver,
1871 asus_wmi_probe,
1872 NULL, 0, NULL, 0);
1873 if (IS_ERR(platform_device))
1874 return PTR_ERR(platform_device);
1875
1876 used = true;
1877 return 0;
1878 }
1879 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1880
1881 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1882 {
1883 platform_device_unregister(driver->platform_device);
1884 platform_driver_unregister(&driver->platform_driver);
1885 used = false;
1886 }
1887 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1888
1889 static int __init asus_wmi_init(void)
1890 {
1891 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1892 pr_info("Asus Management GUID not found");
1893 return -ENODEV;
1894 }
1895
1896 pr_info("ASUS WMI generic driver loaded");
1897 return 0;
1898 }
1899
1900 static void __exit asus_wmi_exit(void)
1901 {
1902 pr_info("ASUS WMI generic driver unloaded");
1903 }
1904
1905 module_init(asus_wmi_init);
1906 module_exit(asus_wmi_exit);