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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / drivers / platform / x86 / asus-wmi.c
blob72d731c21d45c19ddb1502899214f1408cdb7184
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
53 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
54 "Yong Wang <yong.y.wang@intel.com>");
55 MODULE_DESCRIPTION("Asus Generic WMI Driver");
56 MODULE_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
148 struct 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 */
162 struct asus_wmi_debug {
163 struct dentry *root;
164 u32 method_id;
165 u32 dev_id;
166 u32 ctrl_param;
167 };
168
169 struct asus_rfkill {
170 struct asus_wmi *asus;
171 struct rfkill *rfkill;
172 u32 dev_id;
173 };
174
175 struct 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
211 static 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
235 err_free_keymap:
236 sparse_keymap_free(asus->inputdev);
237 err_free_dev:
238 input_free_device(asus->inputdev);
239 return err;
240 }
241
242 static 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
252 static 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
282 exit:
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
292 static 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
297 static 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 */
305 static 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
327 static 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 */
342 static 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
353 static 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
364 static 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
369 static 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
378 static 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
395 static 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
423 static 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
439 static 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
454 static void asus_wmi_led_exit(struct asus_wmi *asus)
455 {
456 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
457 led_classdev_unregister(&asus->kbd_led);
458 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
459 led_classdev_unregister(&asus->tpd_led);
460 if (asus->led_workqueue)
461 destroy_workqueue(asus->led_workqueue);
462 }
463
464 static int asus_wmi_led_init(struct asus_wmi *asus)
465 {
466 int rv = 0;
467
468 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
469 if (!asus->led_workqueue)
470 return -ENOMEM;
471
472 if (read_tpd_led_state(asus) >= 0) {
473 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
474
475 asus->tpd_led.name = "asus::touchpad";
476 asus->tpd_led.brightness_set = tpd_led_set;
477 asus->tpd_led.brightness_get = tpd_led_get;
478 asus->tpd_led.max_brightness = 1;
479
480 rv = led_classdev_register(&asus->platform_device->dev,
481 &asus->tpd_led);
482 if (rv)
483 goto error;
484 }
485
486 if (kbd_led_read(asus, NULL, NULL) >= 0) {
487 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
488
489 asus->kbd_led.name = "asus::kbd_backlight";
490 asus->kbd_led.brightness_set = kbd_led_set;
491 asus->kbd_led.brightness_get = kbd_led_get;
492 asus->kbd_led.max_brightness = 3;
493
494 rv = led_classdev_register(&asus->platform_device->dev,
495 &asus->kbd_led);
496 }
497
498 error:
499 if (rv)
500 asus_wmi_led_exit(asus);
501
502 return rv;
503 }
504
505
506 /*
507 * PCI hotplug (for wlan rfkill)
508 */
509 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
510 {
511 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
512
513 if (result < 0)
514 return false;
515 return !result;
516 }
517
518 static void asus_rfkill_hotplug(struct asus_wmi *asus)
519 {
520 struct pci_dev *dev;
521 struct pci_bus *bus;
522 bool blocked;
523 bool absent;
524 u32 l;
525
526 mutex_lock(&asus->wmi_lock);
527 blocked = asus_wlan_rfkill_blocked(asus);
528 mutex_unlock(&asus->wmi_lock);
529
530 mutex_lock(&asus->hotplug_lock);
531
532 if (asus->wlan.rfkill)
533 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
534
535 if (asus->hotplug_slot) {
536 bus = pci_find_bus(0, 1);
537 if (!bus) {
538 pr_warn("Unable to find PCI bus 1?\n");
539 goto out_unlock;
540 }
541
542 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
543 pr_err("Unable to read PCI config space?\n");
544 goto out_unlock;
545 }
546 absent = (l == 0xffffffff);
547
548 if (blocked != absent) {
549 pr_warn("BIOS says wireless lan is %s, "
550 "but the pci device is %s\n",
551 blocked ? "blocked" : "unblocked",
552 absent ? "absent" : "present");
553 pr_warn("skipped wireless hotplug as probably "
554 "inappropriate for this model\n");
555 goto out_unlock;
556 }
557
558 if (!blocked) {
559 dev = pci_get_slot(bus, 0);
560 if (dev) {
561 /* Device already present */
562 pci_dev_put(dev);
563 goto out_unlock;
564 }
565 dev = pci_scan_single_device(bus, 0);
566 if (dev) {
567 pci_bus_assign_resources(bus);
568 if (pci_bus_add_device(dev))
569 pr_err("Unable to hotplug wifi\n");
570 }
571 } else {
572 dev = pci_get_slot(bus, 0);
573 if (dev) {
574 pci_remove_bus_device(dev);
575 pci_dev_put(dev);
576 }
577 }
578 }
579
580 out_unlock:
581 mutex_unlock(&asus->hotplug_lock);
582 }
583
584 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
585 {
586 struct asus_wmi *asus = data;
587
588 if (event != ACPI_NOTIFY_BUS_CHECK)
589 return;
590
591 /*
592 * We can't call directly asus_rfkill_hotplug because most
593 * of the time WMBC is still being executed and not reetrant.
594 * There is currently no way to tell ACPICA that we want this
595 * method to be serialized, we schedule a asus_rfkill_hotplug
596 * call later, in a safer context.
597 */
598 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
599 }
600
601 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
602 {
603 acpi_status status;
604 acpi_handle handle;
605
606 status = acpi_get_handle(NULL, node, &handle);
607
608 if (ACPI_SUCCESS(status)) {
609 status = acpi_install_notify_handler(handle,
610 ACPI_SYSTEM_NOTIFY,
611 asus_rfkill_notify, asus);
612 if (ACPI_FAILURE(status))
613 pr_warn("Failed to register notify on %s\n", node);
614 } else
615 return -ENODEV;
616
617 return 0;
618 }
619
620 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
621 {
622 acpi_status status = AE_OK;
623 acpi_handle handle;
624
625 status = acpi_get_handle(NULL, node, &handle);
626
627 if (ACPI_SUCCESS(status)) {
628 status = acpi_remove_notify_handler(handle,
629 ACPI_SYSTEM_NOTIFY,
630 asus_rfkill_notify);
631 if (ACPI_FAILURE(status))
632 pr_err("Error removing rfkill notify handler %s\n",
633 node);
634 }
635 }
636
637 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
638 u8 *value)
639 {
640 struct asus_wmi *asus = hotplug_slot->private;
641 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
642
643 if (result < 0)
644 return result;
645
646 *value = !!result;
647 return 0;
648 }
649
650 static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
651 {
652 kfree(hotplug_slot->info);
653 kfree(hotplug_slot);
654 }
655
656 static struct hotplug_slot_ops asus_hotplug_slot_ops = {
657 .owner = THIS_MODULE,
658 .get_adapter_status = asus_get_adapter_status,
659 .get_power_status = asus_get_adapter_status,
660 };
661
662 static void asus_hotplug_work(struct work_struct *work)
663 {
664 struct asus_wmi *asus;
665
666 asus = container_of(work, struct asus_wmi, hotplug_work);
667 asus_rfkill_hotplug(asus);
668 }
669
670 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
671 {
672 int ret = -ENOMEM;
673 struct pci_bus *bus = pci_find_bus(0, 1);
674
675 if (!bus) {
676 pr_err("Unable to find wifi PCI bus\n");
677 return -ENODEV;
678 }
679
680 asus->hotplug_workqueue =
681 create_singlethread_workqueue("hotplug_workqueue");
682 if (!asus->hotplug_workqueue)
683 goto error_workqueue;
684
685 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
686
687 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
688 if (!asus->hotplug_slot)
689 goto error_slot;
690
691 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
692 GFP_KERNEL);
693 if (!asus->hotplug_slot->info)
694 goto error_info;
695
696 asus->hotplug_slot->private = asus;
697 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
698 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
699 asus_get_adapter_status(asus->hotplug_slot,
700 &asus->hotplug_slot->info->adapter_status);
701
702 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
703 if (ret) {
704 pr_err("Unable to register hotplug slot - %d\n", ret);
705 goto error_register;
706 }
707
708 return 0;
709
710 error_register:
711 kfree(asus->hotplug_slot->info);
712 error_info:
713 kfree(asus->hotplug_slot);
714 asus->hotplug_slot = NULL;
715 error_slot:
716 destroy_workqueue(asus->hotplug_workqueue);
717 error_workqueue:
718 return ret;
719 }
720
721 /*
722 * Rfkill devices
723 */
724 static int asus_rfkill_set(void *data, bool blocked)
725 {
726 struct asus_rfkill *priv = data;
727 u32 ctrl_param = !blocked;
728
729 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
730 }
731
732 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
733 {
734 struct asus_rfkill *priv = data;
735 int result;
736
737 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
738
739 if (result < 0)
740 return;
741
742 rfkill_set_sw_state(priv->rfkill, !result);
743 }
744
745 static int asus_rfkill_wlan_set(void *data, bool blocked)
746 {
747 struct asus_rfkill *priv = data;
748 struct asus_wmi *asus = priv->asus;
749 int ret;
750
751 /*
752 * This handler is enabled only if hotplug is enabled.
753 * In this case, the asus_wmi_set_devstate() will
754 * trigger a wmi notification and we need to wait
755 * this call to finish before being able to call
756 * any wmi method
757 */
758 mutex_lock(&asus->wmi_lock);
759 ret = asus_rfkill_set(data, blocked);
760 mutex_unlock(&asus->wmi_lock);
761 return ret;
762 }
763
764 static const struct rfkill_ops asus_rfkill_wlan_ops = {
765 .set_block = asus_rfkill_wlan_set,
766 .query = asus_rfkill_query,
767 };
768
769 static const struct rfkill_ops asus_rfkill_ops = {
770 .set_block = asus_rfkill_set,
771 .query = asus_rfkill_query,
772 };
773
774 static int asus_new_rfkill(struct asus_wmi *asus,
775 struct asus_rfkill *arfkill,
776 const char *name, enum rfkill_type type, int dev_id)
777 {
778 int result = asus_wmi_get_devstate_simple(asus, dev_id);
779 struct rfkill **rfkill = &arfkill->rfkill;
780
781 if (result < 0)
782 return result;
783
784 arfkill->dev_id = dev_id;
785 arfkill->asus = asus;
786
787 if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless)
788 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
789 &asus_rfkill_wlan_ops, arfkill);
790 else
791 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
792 &asus_rfkill_ops, arfkill);
793
794 if (!*rfkill)
795 return -EINVAL;
796
797 rfkill_init_sw_state(*rfkill, !result);
798 result = rfkill_register(*rfkill);
799 if (result) {
800 rfkill_destroy(*rfkill);
801 *rfkill = NULL;
802 return result;
803 }
804 return 0;
805 }
806
807 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
808 {
809 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
810 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
811 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
812 if (asus->wlan.rfkill) {
813 rfkill_unregister(asus->wlan.rfkill);
814 rfkill_destroy(asus->wlan.rfkill);
815 asus->wlan.rfkill = NULL;
816 }
817 /*
818 * Refresh pci hotplug in case the rfkill state was changed after
819 * asus_unregister_rfkill_notifier()
820 */
821 asus_rfkill_hotplug(asus);
822 if (asus->hotplug_slot)
823 pci_hp_deregister(asus->hotplug_slot);
824 if (asus->hotplug_workqueue)
825 destroy_workqueue(asus->hotplug_workqueue);
826
827 if (asus->bluetooth.rfkill) {
828 rfkill_unregister(asus->bluetooth.rfkill);
829 rfkill_destroy(asus->bluetooth.rfkill);
830 asus->bluetooth.rfkill = NULL;
831 }
832 if (asus->wimax.rfkill) {
833 rfkill_unregister(asus->wimax.rfkill);
834 rfkill_destroy(asus->wimax.rfkill);
835 asus->wimax.rfkill = NULL;
836 }
837 if (asus->wwan3g.rfkill) {
838 rfkill_unregister(asus->wwan3g.rfkill);
839 rfkill_destroy(asus->wwan3g.rfkill);
840 asus->wwan3g.rfkill = NULL;
841 }
842 if (asus->gps.rfkill) {
843 rfkill_unregister(asus->gps.rfkill);
844 rfkill_destroy(asus->gps.rfkill);
845 asus->gps.rfkill = NULL;
846 }
847 if (asus->uwb.rfkill) {
848 rfkill_unregister(asus->uwb.rfkill);
849 rfkill_destroy(asus->uwb.rfkill);
850 asus->uwb.rfkill = NULL;
851 }
852 }
853
854 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
855 {
856 int result = 0;
857
858 mutex_init(&asus->hotplug_lock);
859 mutex_init(&asus->wmi_lock);
860
861 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
862 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
863
864 if (result && result != -ENODEV)
865 goto exit;
866
867 result = asus_new_rfkill(asus, &asus->bluetooth,
868 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
869 ASUS_WMI_DEVID_BLUETOOTH);
870
871 if (result && result != -ENODEV)
872 goto exit;
873
874 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
875 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
876
877 if (result && result != -ENODEV)
878 goto exit;
879
880 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
881 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
882
883 if (result && result != -ENODEV)
884 goto exit;
885
886 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
887 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
888
889 if (result && result != -ENODEV)
890 goto exit;
891
892 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
893 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
894
895 if (result && result != -ENODEV)
896 goto exit;
897
898 if (!asus->driver->hotplug_wireless)
899 goto exit;
900
901 result = asus_setup_pci_hotplug(asus);
902 /*
903 * If we get -EBUSY then something else is handling the PCI hotplug -
904 * don't fail in this case
905 */
906 if (result == -EBUSY)
907 result = 0;
908
909 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
910 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
911 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
912 /*
913 * Refresh pci hotplug in case the rfkill state was changed during
914 * setup.
915 */
916 asus_rfkill_hotplug(asus);
917
918 exit:
919 if (result && result != -ENODEV)
920 asus_wmi_rfkill_exit(asus);
921
922 if (result == -ENODEV)
923 result = 0;
924
925 return result;
926 }
927
928 /*
929 * Hwmon device
930 */
931 static ssize_t asus_hwmon_pwm1(struct device *dev,
932 struct device_attribute *attr,
933 char *buf)
934 {
935 struct asus_wmi *asus = dev_get_drvdata(dev);
936 u32 value;
937 int err;
938
939 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
940
941 if (err < 0)
942 return err;
943
944 value &= 0xFF;
945
946 if (value == 1) /* Low Speed */
947 value = 85;
948 else if (value == 2)
949 value = 170;
950 else if (value == 3)
951 value = 255;
952 else if (value != 0) {
953 pr_err("Unknown fan speed %#x", value);
954 value = -1;
955 }
956
957 return sprintf(buf, "%d\n", value);
958 }
959
960 static ssize_t asus_hwmon_temp1(struct device *dev,
961 struct device_attribute *attr,
962 char *buf)
963 {
964 struct asus_wmi *asus = dev_get_drvdata(dev);
965 u32 value;
966 int err;
967
968 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
969
970 if (err < 0)
971 return err;
972
973 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
974
975 return sprintf(buf, "%d\n", value);
976 }
977
978 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
979 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
980
981 static ssize_t
982 show_name(struct device *dev, struct device_attribute *attr, char *buf)
983 {
984 return sprintf(buf, "asus\n");
985 }
986 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
987
988 static struct attribute *hwmon_attributes[] = {
989 &sensor_dev_attr_pwm1.dev_attr.attr,
990 &sensor_dev_attr_temp1_input.dev_attr.attr,
991 &sensor_dev_attr_name.dev_attr.attr,
992 NULL
993 };
994
995 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
996 struct attribute *attr, int idx)
997 {
998 struct device *dev = container_of(kobj, struct device, kobj);
999 struct platform_device *pdev = to_platform_device(dev->parent);
1000 struct asus_wmi *asus = platform_get_drvdata(pdev);
1001 bool ok = true;
1002 int dev_id = -1;
1003 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1004
1005 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1006 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1007 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1008 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1009
1010 if (dev_id != -1) {
1011 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1012
1013 if (err < 0)
1014 return 0; /* can't return negative here */
1015 }
1016
1017 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1018 /*
1019 * We need to find a better way, probably using sfun,
1020 * bits or spec ...
1021 * Currently we disable it if:
1022 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1023 * - reverved bits are non-zero
1024 * - sfun and presence bit are not set
1025 */
1026 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1027 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1028 ok = false;
1029 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1030 /* If value is zero, something is clearly wrong */
1031 if (value == 0)
1032 ok = false;
1033 }
1034
1035 return ok ? attr->mode : 0;
1036 }
1037
1038 static struct attribute_group hwmon_attribute_group = {
1039 .is_visible = asus_hwmon_sysfs_is_visible,
1040 .attrs = hwmon_attributes
1041 };
1042
1043 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1044 {
1045 struct device *hwmon;
1046
1047 hwmon = asus->hwmon_device;
1048 if (!hwmon)
1049 return;
1050 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1051 hwmon_device_unregister(hwmon);
1052 asus->hwmon_device = NULL;
1053 }
1054
1055 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1056 {
1057 struct device *hwmon;
1058 int result;
1059
1060 hwmon = hwmon_device_register(&asus->platform_device->dev);
1061 if (IS_ERR(hwmon)) {
1062 pr_err("Could not register asus hwmon device\n");
1063 return PTR_ERR(hwmon);
1064 }
1065 dev_set_drvdata(hwmon, asus);
1066 asus->hwmon_device = hwmon;
1067 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1068 if (result)
1069 asus_wmi_hwmon_exit(asus);
1070 return result;
1071 }
1072
1073 /*
1074 * Backlight
1075 */
1076 static int read_backlight_power(struct asus_wmi *asus)
1077 {
1078 int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT);
1079
1080 if (ret < 0)
1081 return ret;
1082
1083 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1084 }
1085
1086 static int read_brightness_max(struct asus_wmi *asus)
1087 {
1088 u32 retval;
1089 int err;
1090
1091 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1092
1093 if (err < 0)
1094 return err;
1095
1096 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1097 retval >>= 8;
1098
1099 if (!retval)
1100 return -ENODEV;
1101
1102 return retval;
1103 }
1104
1105 static int read_brightness(struct backlight_device *bd)
1106 {
1107 struct asus_wmi *asus = bl_get_data(bd);
1108 u32 retval;
1109 int err;
1110
1111 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1112
1113 if (err < 0)
1114 return err;
1115
1116 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1117 }
1118
1119 static int update_bl_status(struct backlight_device *bd)
1120 {
1121 struct asus_wmi *asus = bl_get_data(bd);
1122 u32 ctrl_param;
1123 int power, err;
1124
1125 ctrl_param = bd->props.brightness;
1126
1127 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1128 ctrl_param, NULL);
1129
1130 if (err < 0)
1131 return err;
1132
1133 power = read_backlight_power(asus);
1134 if (power != -ENODEV && bd->props.power != power) {
1135 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1136 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1137 ctrl_param, NULL);
1138 }
1139 return err;
1140 }
1141
1142 static const struct backlight_ops asus_wmi_bl_ops = {
1143 .get_brightness = read_brightness,
1144 .update_status = update_bl_status,
1145 };
1146
1147 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1148 {
1149 struct backlight_device *bd = asus->backlight_device;
1150 int old = bd->props.brightness;
1151 int new = old;
1152
1153 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1154 new = code - NOTIFY_BRNUP_MIN + 1;
1155 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1156 new = code - NOTIFY_BRNDOWN_MIN;
1157
1158 bd->props.brightness = new;
1159 backlight_update_status(bd);
1160 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1161
1162 return old;
1163 }
1164
1165 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1166 {
1167 struct backlight_device *bd;
1168 struct backlight_properties props;
1169 int max;
1170 int power;
1171
1172 max = read_brightness_max(asus);
1173
1174 if (max == -ENODEV)
1175 max = 0;
1176 else if (max < 0)
1177 return max;
1178
1179 power = read_backlight_power(asus);
1180
1181 if (power == -ENODEV)
1182 power = FB_BLANK_UNBLANK;
1183 else if (power < 0)
1184 return power;
1185
1186 memset(&props, 0, sizeof(struct backlight_properties));
1187 props.type = BACKLIGHT_PLATFORM;
1188 props.max_brightness = max;
1189 bd = backlight_device_register(asus->driver->name,
1190 &asus->platform_device->dev, asus,
1191 &asus_wmi_bl_ops, &props);
1192 if (IS_ERR(bd)) {
1193 pr_err("Could not register backlight device\n");
1194 return PTR_ERR(bd);
1195 }
1196
1197 asus->backlight_device = bd;
1198
1199 bd->props.brightness = read_brightness(bd);
1200 bd->props.power = power;
1201 backlight_update_status(bd);
1202
1203 return 0;
1204 }
1205
1206 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1207 {
1208 if (asus->backlight_device)
1209 backlight_device_unregister(asus->backlight_device);
1210
1211 asus->backlight_device = NULL;
1212 }
1213
1214 static void asus_wmi_notify(u32 value, void *context)
1215 {
1216 struct asus_wmi *asus = context;
1217 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1218 union acpi_object *obj;
1219 acpi_status status;
1220 int code;
1221 int orig_code;
1222 unsigned int key_value = 1;
1223 bool autorelease = 1;
1224
1225 status = wmi_get_event_data(value, &response);
1226 if (status != AE_OK) {
1227 pr_err("bad event status 0x%x\n", status);
1228 return;
1229 }
1230
1231 obj = (union acpi_object *)response.pointer;
1232
1233 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1234 goto exit;
1235
1236 code = obj->integer.value;
1237 orig_code = code;
1238
1239 if (asus->driver->key_filter) {
1240 asus->driver->key_filter(asus->driver, &code, &key_value,
1241 &autorelease);
1242 if (code == ASUS_WMI_KEY_IGNORE)
1243 goto exit;
1244 }
1245
1246 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1247 code = NOTIFY_BRNUP_MIN;
1248 else if (code >= NOTIFY_BRNDOWN_MIN &&
1249 code <= NOTIFY_BRNDOWN_MAX)
1250 code = NOTIFY_BRNDOWN_MIN;
1251
1252 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1253 if (!acpi_video_backlight_support())
1254 asus_wmi_backlight_notify(asus, orig_code);
1255 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1256 key_value, autorelease))
1257 pr_info("Unknown key %x pressed\n", code);
1258
1259 exit:
1260 kfree(obj);
1261 }
1262
1263 /*
1264 * Sys helpers
1265 */
1266 static int parse_arg(const char *buf, unsigned long count, int *val)
1267 {
1268 if (!count)
1269 return 0;
1270 if (sscanf(buf, "%i", val) != 1)
1271 return -EINVAL;
1272 return count;
1273 }
1274
1275 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1276 const char *buf, size_t count)
1277 {
1278 u32 retval;
1279 int rv, err, value;
1280
1281 value = asus_wmi_get_devstate_simple(asus, devid);
1282 if (value == -ENODEV) /* Check device presence */
1283 return value;
1284
1285 rv = parse_arg(buf, count, &value);
1286 err = asus_wmi_set_devstate(devid, value, &retval);
1287
1288 if (err < 0)
1289 return err;
1290
1291 return rv;
1292 }
1293
1294 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1295 {
1296 int value = asus_wmi_get_devstate_simple(asus, devid);
1297
1298 if (value < 0)
1299 return value;
1300
1301 return sprintf(buf, "%d\n", value);
1302 }
1303
1304 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1305 static ssize_t show_##_name(struct device *dev, \
1306 struct device_attribute *attr, \
1307 char *buf) \
1308 { \
1309 struct asus_wmi *asus = dev_get_drvdata(dev); \
1310 \
1311 return show_sys_wmi(asus, _cm, buf); \
1312 } \
1313 static ssize_t store_##_name(struct device *dev, \
1314 struct device_attribute *attr, \
1315 const char *buf, size_t count) \
1316 { \
1317 struct asus_wmi *asus = dev_get_drvdata(dev); \
1318 \
1319 return store_sys_wmi(asus, _cm, buf, count); \
1320 } \
1321 static struct device_attribute dev_attr_##_name = { \
1322 .attr = { \
1323 .name = __stringify(_name), \
1324 .mode = _mode }, \
1325 .show = show_##_name, \
1326 .store = store_##_name, \
1327 }
1328
1329 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1330 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1331 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1332
1333 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1334 const char *buf, size_t count)
1335 {
1336 int value, rv;
1337
1338 if (!count || sscanf(buf, "%i", &value) != 1)
1339 return -EINVAL;
1340 if (value < 0 || value > 2)
1341 return -EINVAL;
1342
1343 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1344 if (rv < 0)
1345 return rv;
1346
1347 return count;
1348 }
1349
1350 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1351
1352 static struct attribute *platform_attributes[] = {
1353 &dev_attr_cpufv.attr,
1354 &dev_attr_camera.attr,
1355 &dev_attr_cardr.attr,
1356 &dev_attr_touchpad.attr,
1357 NULL
1358 };
1359
1360 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1361 struct attribute *attr, int idx)
1362 {
1363 struct device *dev = container_of(kobj, struct device, kobj);
1364 struct platform_device *pdev = to_platform_device(dev);
1365 struct asus_wmi *asus = platform_get_drvdata(pdev);
1366 bool ok = true;
1367 int devid = -1;
1368
1369 if (attr == &dev_attr_camera.attr)
1370 devid = ASUS_WMI_DEVID_CAMERA;
1371 else if (attr == &dev_attr_cardr.attr)
1372 devid = ASUS_WMI_DEVID_CARDREADER;
1373 else if (attr == &dev_attr_touchpad.attr)
1374 devid = ASUS_WMI_DEVID_TOUCHPAD;
1375
1376 if (devid != -1)
1377 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1378
1379 return ok ? attr->mode : 0;
1380 }
1381
1382 static struct attribute_group platform_attribute_group = {
1383 .is_visible = asus_sysfs_is_visible,
1384 .attrs = platform_attributes
1385 };
1386
1387 static void asus_wmi_sysfs_exit(struct platform_device *device)
1388 {
1389 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1390 }
1391
1392 static int asus_wmi_sysfs_init(struct platform_device *device)
1393 {
1394 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1395 }
1396
1397 /*
1398 * Platform device
1399 */
1400 static int asus_wmi_platform_init(struct asus_wmi *asus)
1401 {
1402 int rv;
1403
1404 /* INIT enable hotkeys on some models */
1405 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1406 pr_info("Initialization: %#x", rv);
1407
1408 /* We don't know yet what to do with this version... */
1409 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1410 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1411 asus->spec = rv;
1412 }
1413
1414 /*
1415 * The SFUN method probably allows the original driver to get the list
1416 * of features supported by a given model. For now, 0x0100 or 0x0800
1417 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1418 * The significance of others is yet to be found.
1419 */
1420 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1421 pr_info("SFUN value: %#x", rv);
1422 asus->sfun = rv;
1423 }
1424
1425 /*
1426 * Eee PC and Notebooks seems to have different method_id for DSTS,
1427 * but it may also be related to the BIOS's SPEC.
1428 * Note, on most Eeepc, there is no way to check if a method exist
1429 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1430 * but once again, SPEC may probably be used for that kind of things.
1431 */
1432 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1433 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1434 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1435 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1436
1437 if (!asus->dsts_id) {
1438 pr_err("Can't find DSTS");
1439 return -ENODEV;
1440 }
1441
1442 /* CWAP allow to define the behavior of the Fn+F2 key,
1443 * this method doesn't seems to be present on Eee PCs */
1444 if (asus->driver->wapf >= 0)
1445 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1446 asus->driver->wapf, NULL);
1447
1448 return asus_wmi_sysfs_init(asus->platform_device);
1449 }
1450
1451 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1452 {
1453 asus_wmi_sysfs_exit(asus->platform_device);
1454 }
1455
1456 /*
1457 * debugfs
1458 */
1459 struct asus_wmi_debugfs_node {
1460 struct asus_wmi *asus;
1461 char *name;
1462 int (*show) (struct seq_file *m, void *data);
1463 };
1464
1465 static int show_dsts(struct seq_file *m, void *data)
1466 {
1467 struct asus_wmi *asus = m->private;
1468 int err;
1469 u32 retval = -1;
1470
1471 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1472
1473 if (err < 0)
1474 return err;
1475
1476 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1477
1478 return 0;
1479 }
1480
1481 static int show_devs(struct seq_file *m, void *data)
1482 {
1483 struct asus_wmi *asus = m->private;
1484 int err;
1485 u32 retval = -1;
1486
1487 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1488 &retval);
1489
1490 if (err < 0)
1491 return err;
1492
1493 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1494 asus->debug.ctrl_param, retval);
1495
1496 return 0;
1497 }
1498
1499 static int show_call(struct seq_file *m, void *data)
1500 {
1501 struct asus_wmi *asus = m->private;
1502 struct bios_args args = {
1503 .arg0 = asus->debug.dev_id,
1504 .arg1 = asus->debug.ctrl_param,
1505 };
1506 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1507 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1508 union acpi_object *obj;
1509 acpi_status status;
1510
1511 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1512 1, asus->debug.method_id,
1513 &input, &output);
1514
1515 if (ACPI_FAILURE(status))
1516 return -EIO;
1517
1518 obj = (union acpi_object *)output.pointer;
1519 if (obj && obj->type == ACPI_TYPE_INTEGER)
1520 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1521 asus->debug.dev_id, asus->debug.ctrl_param,
1522 (u32) obj->integer.value);
1523 else
1524 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1525 asus->debug.dev_id, asus->debug.ctrl_param,
1526 obj ? obj->type : -1);
1527
1528 kfree(obj);
1529
1530 return 0;
1531 }
1532
1533 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1534 {NULL, "devs", show_devs},
1535 {NULL, "dsts", show_dsts},
1536 {NULL, "call", show_call},
1537 };
1538
1539 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1540 {
1541 struct asus_wmi_debugfs_node *node = inode->i_private;
1542
1543 return single_open(file, node->show, node->asus);
1544 }
1545
1546 static const struct file_operations asus_wmi_debugfs_io_ops = {
1547 .owner = THIS_MODULE,
1548 .open = asus_wmi_debugfs_open,
1549 .read = seq_read,
1550 .llseek = seq_lseek,
1551 .release = single_release,
1552 };
1553
1554 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1555 {
1556 debugfs_remove_recursive(asus->debug.root);
1557 }
1558
1559 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1560 {
1561 struct dentry *dent;
1562 int i;
1563
1564 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1565 if (!asus->debug.root) {
1566 pr_err("failed to create debugfs directory");
1567 goto error_debugfs;
1568 }
1569
1570 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1571 asus->debug.root, &asus->debug.method_id);
1572 if (!dent)
1573 goto error_debugfs;
1574
1575 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1576 asus->debug.root, &asus->debug.dev_id);
1577 if (!dent)
1578 goto error_debugfs;
1579
1580 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1581 asus->debug.root, &asus->debug.ctrl_param);
1582 if (!dent)
1583 goto error_debugfs;
1584
1585 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1586 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1587
1588 node->asus = asus;
1589 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1590 asus->debug.root, node,
1591 &asus_wmi_debugfs_io_ops);
1592 if (!dent) {
1593 pr_err("failed to create debug file: %s\n", node->name);
1594 goto error_debugfs;
1595 }
1596 }
1597
1598 return 0;
1599
1600 error_debugfs:
1601 asus_wmi_debugfs_exit(asus);
1602 return -ENOMEM;
1603 }
1604
1605 /*
1606 * WMI Driver
1607 */
1608 static int asus_wmi_add(struct platform_device *pdev)
1609 {
1610 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1611 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1612 struct asus_wmi *asus;
1613 acpi_status status;
1614 int err;
1615
1616 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1617 if (!asus)
1618 return -ENOMEM;
1619
1620 asus->driver = wdrv;
1621 asus->platform_device = pdev;
1622 wdrv->platform_device = pdev;
1623 platform_set_drvdata(asus->platform_device, asus);
1624
1625 if (wdrv->quirks)
1626 wdrv->quirks(asus->driver);
1627
1628 err = asus_wmi_platform_init(asus);
1629 if (err)
1630 goto fail_platform;
1631
1632 err = asus_wmi_input_init(asus);
1633 if (err)
1634 goto fail_input;
1635
1636 err = asus_wmi_hwmon_init(asus);
1637 if (err)
1638 goto fail_hwmon;
1639
1640 err = asus_wmi_led_init(asus);
1641 if (err)
1642 goto fail_leds;
1643
1644 err = asus_wmi_rfkill_init(asus);
1645 if (err)
1646 goto fail_rfkill;
1647
1648 if (!acpi_video_backlight_support()) {
1649 err = asus_wmi_backlight_init(asus);
1650 if (err && err != -ENODEV)
1651 goto fail_backlight;
1652 } else
1653 pr_info("Backlight controlled by ACPI video driver\n");
1654
1655 status = wmi_install_notify_handler(asus->driver->event_guid,
1656 asus_wmi_notify, asus);
1657 if (ACPI_FAILURE(status)) {
1658 pr_err("Unable to register notify handler - %d\n", status);
1659 err = -ENODEV;
1660 goto fail_wmi_handler;
1661 }
1662
1663 err = asus_wmi_debugfs_init(asus);
1664 if (err)
1665 goto fail_debugfs;
1666
1667 return 0;
1668
1669 fail_debugfs:
1670 wmi_remove_notify_handler(asus->driver->event_guid);
1671 fail_wmi_handler:
1672 asus_wmi_backlight_exit(asus);
1673 fail_backlight:
1674 asus_wmi_rfkill_exit(asus);
1675 fail_rfkill:
1676 asus_wmi_led_exit(asus);
1677 fail_leds:
1678 asus_wmi_hwmon_exit(asus);
1679 fail_hwmon:
1680 asus_wmi_input_exit(asus);
1681 fail_input:
1682 asus_wmi_platform_exit(asus);
1683 fail_platform:
1684 kfree(asus);
1685 return err;
1686 }
1687
1688 static int asus_wmi_remove(struct platform_device *device)
1689 {
1690 struct asus_wmi *asus;
1691
1692 asus = platform_get_drvdata(device);
1693 wmi_remove_notify_handler(asus->driver->event_guid);
1694 asus_wmi_backlight_exit(asus);
1695 asus_wmi_input_exit(asus);
1696 asus_wmi_hwmon_exit(asus);
1697 asus_wmi_led_exit(asus);
1698 asus_wmi_rfkill_exit(asus);
1699 asus_wmi_debugfs_exit(asus);
1700 asus_wmi_platform_exit(asus);
1701
1702 kfree(asus);
1703 return 0;
1704 }
1705
1706 /*
1707 * Platform driver - hibernate/resume callbacks
1708 */
1709 static int asus_hotk_thaw(struct device *device)
1710 {
1711 struct asus_wmi *asus = dev_get_drvdata(device);
1712
1713 if (asus->wlan.rfkill) {
1714 bool wlan;
1715
1716 /*
1717 * Work around bios bug - acpi _PTS turns off the wireless led
1718 * during suspend. Normally it restores it on resume, but
1719 * we should kick it ourselves in case hibernation is aborted.
1720 */
1721 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1722 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1723 }
1724
1725 return 0;
1726 }
1727
1728 static int asus_hotk_restore(struct device *device)
1729 {
1730 struct asus_wmi *asus = dev_get_drvdata(device);
1731 int bl;
1732
1733 /* Refresh both wlan rfkill state and pci hotplug */
1734 if (asus->wlan.rfkill)
1735 asus_rfkill_hotplug(asus);
1736
1737 if (asus->bluetooth.rfkill) {
1738 bl = !asus_wmi_get_devstate_simple(asus,
1739 ASUS_WMI_DEVID_BLUETOOTH);
1740 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1741 }
1742 if (asus->wimax.rfkill) {
1743 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1744 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1745 }
1746 if (asus->wwan3g.rfkill) {
1747 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1748 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1749 }
1750 if (asus->gps.rfkill) {
1751 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1752 rfkill_set_sw_state(asus->gps.rfkill, bl);
1753 }
1754 if (asus->uwb.rfkill) {
1755 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1756 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1757 }
1758
1759 return 0;
1760 }
1761
1762 static const struct dev_pm_ops asus_pm_ops = {
1763 .thaw = asus_hotk_thaw,
1764 .restore = asus_hotk_restore,
1765 };
1766
1767 static int asus_wmi_probe(struct platform_device *pdev)
1768 {
1769 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1770 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1771 int ret;
1772
1773 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1774 pr_warn("Management GUID not found\n");
1775 return -ENODEV;
1776 }
1777
1778 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1779 pr_warn("Event GUID not found\n");
1780 return -ENODEV;
1781 }
1782
1783 if (wdrv->probe) {
1784 ret = wdrv->probe(pdev);
1785 if (ret)
1786 return ret;
1787 }
1788
1789 return asus_wmi_add(pdev);
1790 }
1791
1792 static bool used;
1793
1794 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1795 {
1796 struct platform_driver *platform_driver;
1797 struct platform_device *platform_device;
1798
1799 if (used)
1800 return -EBUSY;
1801
1802 platform_driver = &driver->platform_driver;
1803 platform_driver->remove = asus_wmi_remove;
1804 platform_driver->driver.owner = driver->owner;
1805 platform_driver->driver.name = driver->name;
1806 platform_driver->driver.pm = &asus_pm_ops;
1807
1808 platform_device = platform_create_bundle(platform_driver,
1809 asus_wmi_probe,
1810 NULL, 0, NULL, 0);
1811 if (IS_ERR(platform_device))
1812 return PTR_ERR(platform_device);
1813
1814 used = true;
1815 return 0;
1816 }
1817 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1818
1819 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1820 {
1821 platform_device_unregister(driver->platform_device);
1822 platform_driver_unregister(&driver->platform_driver);
1823 used = false;
1824 }
1825 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1826
1827 static int __init asus_wmi_init(void)
1828 {
1829 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1830 pr_info("Asus Management GUID not found");
1831 return -ENODEV;
1832 }
1833
1834 pr_info("ASUS WMI generic driver loaded");
1835 return 0;
1836 }
1837
1838 static void __exit asus_wmi_exit(void)
1839 {
1840 pr_info("ASUS WMI generic driver unloaded");
1841 }
1842
1843 module_init(asus_wmi_init);
1844 module_exit(asus_wmi_exit);