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cirrus: cs89x0: Remove function prototypes and reorder declarations
[linux/fpc-iii.git] / drivers / platform / x86 / asus-wmi.c
blob77aadde5281c97ae423e35f5255c7e9b63d36b70
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 & 0x7F;
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_stop_and_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 &&
788 asus->driver->quirks->hotplug_wireless)
789 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
790 &asus_rfkill_wlan_ops, arfkill);
791 else
792 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
793 &asus_rfkill_ops, arfkill);
794
795 if (!*rfkill)
796 return -EINVAL;
797
798 rfkill_init_sw_state(*rfkill, !result);
799 result = rfkill_register(*rfkill);
800 if (result) {
801 rfkill_destroy(*rfkill);
802 *rfkill = NULL;
803 return result;
804 }
805 return 0;
806 }
807
808 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
809 {
810 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
811 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
812 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
813 if (asus->wlan.rfkill) {
814 rfkill_unregister(asus->wlan.rfkill);
815 rfkill_destroy(asus->wlan.rfkill);
816 asus->wlan.rfkill = NULL;
817 }
818 /*
819 * Refresh pci hotplug in case the rfkill state was changed after
820 * asus_unregister_rfkill_notifier()
821 */
822 asus_rfkill_hotplug(asus);
823 if (asus->hotplug_slot)
824 pci_hp_deregister(asus->hotplug_slot);
825 if (asus->hotplug_workqueue)
826 destroy_workqueue(asus->hotplug_workqueue);
827
828 if (asus->bluetooth.rfkill) {
829 rfkill_unregister(asus->bluetooth.rfkill);
830 rfkill_destroy(asus->bluetooth.rfkill);
831 asus->bluetooth.rfkill = NULL;
832 }
833 if (asus->wimax.rfkill) {
834 rfkill_unregister(asus->wimax.rfkill);
835 rfkill_destroy(asus->wimax.rfkill);
836 asus->wimax.rfkill = NULL;
837 }
838 if (asus->wwan3g.rfkill) {
839 rfkill_unregister(asus->wwan3g.rfkill);
840 rfkill_destroy(asus->wwan3g.rfkill);
841 asus->wwan3g.rfkill = NULL;
842 }
843 if (asus->gps.rfkill) {
844 rfkill_unregister(asus->gps.rfkill);
845 rfkill_destroy(asus->gps.rfkill);
846 asus->gps.rfkill = NULL;
847 }
848 if (asus->uwb.rfkill) {
849 rfkill_unregister(asus->uwb.rfkill);
850 rfkill_destroy(asus->uwb.rfkill);
851 asus->uwb.rfkill = NULL;
852 }
853 }
854
855 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
856 {
857 int result = 0;
858
859 mutex_init(&asus->hotplug_lock);
860 mutex_init(&asus->wmi_lock);
861
862 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
863 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
864
865 if (result && result != -ENODEV)
866 goto exit;
867
868 result = asus_new_rfkill(asus, &asus->bluetooth,
869 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
870 ASUS_WMI_DEVID_BLUETOOTH);
871
872 if (result && result != -ENODEV)
873 goto exit;
874
875 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
876 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
877
878 if (result && result != -ENODEV)
879 goto exit;
880
881 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
882 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
883
884 if (result && result != -ENODEV)
885 goto exit;
886
887 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
888 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
889
890 if (result && result != -ENODEV)
891 goto exit;
892
893 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
894 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
895
896 if (result && result != -ENODEV)
897 goto exit;
898
899 if (!asus->driver->quirks->hotplug_wireless)
900 goto exit;
901
902 result = asus_setup_pci_hotplug(asus);
903 /*
904 * If we get -EBUSY then something else is handling the PCI hotplug -
905 * don't fail in this case
906 */
907 if (result == -EBUSY)
908 result = 0;
909
910 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
911 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
912 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
913 /*
914 * Refresh pci hotplug in case the rfkill state was changed during
915 * setup.
916 */
917 asus_rfkill_hotplug(asus);
918
919 exit:
920 if (result && result != -ENODEV)
921 asus_wmi_rfkill_exit(asus);
922
923 if (result == -ENODEV)
924 result = 0;
925
926 return result;
927 }
928
929 /*
930 * Hwmon device
931 */
932 static ssize_t asus_hwmon_pwm1(struct device *dev,
933 struct device_attribute *attr,
934 char *buf)
935 {
936 struct asus_wmi *asus = dev_get_drvdata(dev);
937 u32 value;
938 int err;
939
940 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
941
942 if (err < 0)
943 return err;
944
945 value &= 0xFF;
946
947 if (value == 1) /* Low Speed */
948 value = 85;
949 else if (value == 2)
950 value = 170;
951 else if (value == 3)
952 value = 255;
953 else if (value != 0) {
954 pr_err("Unknown fan speed %#x", value);
955 value = -1;
956 }
957
958 return sprintf(buf, "%d\n", value);
959 }
960
961 static ssize_t asus_hwmon_temp1(struct device *dev,
962 struct device_attribute *attr,
963 char *buf)
964 {
965 struct asus_wmi *asus = dev_get_drvdata(dev);
966 u32 value;
967 int err;
968
969 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
970
971 if (err < 0)
972 return err;
973
974 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
975
976 return sprintf(buf, "%d\n", value);
977 }
978
979 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
980 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
981
982 static ssize_t
983 show_name(struct device *dev, struct device_attribute *attr, char *buf)
984 {
985 return sprintf(buf, "asus\n");
986 }
987 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
988
989 static struct attribute *hwmon_attributes[] = {
990 &sensor_dev_attr_pwm1.dev_attr.attr,
991 &sensor_dev_attr_temp1_input.dev_attr.attr,
992 &sensor_dev_attr_name.dev_attr.attr,
993 NULL
994 };
995
996 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
997 struct attribute *attr, int idx)
998 {
999 struct device *dev = container_of(kobj, struct device, kobj);
1000 struct platform_device *pdev = to_platform_device(dev->parent);
1001 struct asus_wmi *asus = platform_get_drvdata(pdev);
1002 bool ok = true;
1003 int dev_id = -1;
1004 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1005
1006 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
1007 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
1008 else if (attr == &sensor_dev_attr_temp1_input.dev_attr.attr)
1009 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
1010
1011 if (dev_id != -1) {
1012 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1013
1014 if (err < 0)
1015 return 0; /* can't return negative here */
1016 }
1017
1018 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1019 /*
1020 * We need to find a better way, probably using sfun,
1021 * bits or spec ...
1022 * Currently we disable it if:
1023 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1024 * - reverved bits are non-zero
1025 * - sfun and presence bit are not set
1026 */
1027 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1028 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1029 ok = false;
1030 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1031 /* If value is zero, something is clearly wrong */
1032 if (value == 0)
1033 ok = false;
1034 }
1035
1036 return ok ? attr->mode : 0;
1037 }
1038
1039 static struct attribute_group hwmon_attribute_group = {
1040 .is_visible = asus_hwmon_sysfs_is_visible,
1041 .attrs = hwmon_attributes
1042 };
1043
1044 static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
1045 {
1046 struct device *hwmon;
1047
1048 hwmon = asus->hwmon_device;
1049 if (!hwmon)
1050 return;
1051 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
1052 hwmon_device_unregister(hwmon);
1053 asus->hwmon_device = NULL;
1054 }
1055
1056 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1057 {
1058 struct device *hwmon;
1059 int result;
1060
1061 hwmon = hwmon_device_register(&asus->platform_device->dev);
1062 if (IS_ERR(hwmon)) {
1063 pr_err("Could not register asus hwmon device\n");
1064 return PTR_ERR(hwmon);
1065 }
1066 dev_set_drvdata(hwmon, asus);
1067 asus->hwmon_device = hwmon;
1068 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
1069 if (result)
1070 asus_wmi_hwmon_exit(asus);
1071 return result;
1072 }
1073
1074 /*
1075 * Backlight
1076 */
1077 static int read_backlight_power(struct asus_wmi *asus)
1078 {
1079 int ret;
1080 if (asus->driver->quirks->store_backlight_power)
1081 ret = !asus->driver->panel_power;
1082 else
1083 ret = asus_wmi_get_devstate_simple(asus,
1084 ASUS_WMI_DEVID_BACKLIGHT);
1085
1086 if (ret < 0)
1087 return ret;
1088
1089 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1090 }
1091
1092 static int read_brightness_max(struct asus_wmi *asus)
1093 {
1094 u32 retval;
1095 int err;
1096
1097 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1098
1099 if (err < 0)
1100 return err;
1101
1102 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1103 retval >>= 8;
1104
1105 if (!retval)
1106 return -ENODEV;
1107
1108 return retval;
1109 }
1110
1111 static int read_brightness(struct backlight_device *bd)
1112 {
1113 struct asus_wmi *asus = bl_get_data(bd);
1114 u32 retval;
1115 int err;
1116
1117 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1118
1119 if (err < 0)
1120 return err;
1121
1122 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1123 }
1124
1125 static u32 get_scalar_command(struct backlight_device *bd)
1126 {
1127 struct asus_wmi *asus = bl_get_data(bd);
1128 u32 ctrl_param = 0;
1129
1130 if ((asus->driver->brightness < bd->props.brightness) ||
1131 bd->props.brightness == bd->props.max_brightness)
1132 ctrl_param = 0x00008001;
1133 else if ((asus->driver->brightness > bd->props.brightness) ||
1134 bd->props.brightness == 0)
1135 ctrl_param = 0x00008000;
1136
1137 asus->driver->brightness = bd->props.brightness;
1138
1139 return ctrl_param;
1140 }
1141
1142 static int update_bl_status(struct backlight_device *bd)
1143 {
1144 struct asus_wmi *asus = bl_get_data(bd);
1145 u32 ctrl_param;
1146 int power, err = 0;
1147
1148 power = read_backlight_power(asus);
1149 if (power != -ENODEV && bd->props.power != power) {
1150 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1151 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1152 ctrl_param, NULL);
1153 if (asus->driver->quirks->store_backlight_power)
1154 asus->driver->panel_power = bd->props.power;
1155
1156 /* When using scalar brightness, updating the brightness
1157 * will mess with the backlight power */
1158 if (asus->driver->quirks->scalar_panel_brightness)
1159 return err;
1160 }
1161
1162 if (asus->driver->quirks->scalar_panel_brightness)
1163 ctrl_param = get_scalar_command(bd);
1164 else
1165 ctrl_param = bd->props.brightness;
1166
1167 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1168 ctrl_param, NULL);
1169
1170 return err;
1171 }
1172
1173 static const struct backlight_ops asus_wmi_bl_ops = {
1174 .get_brightness = read_brightness,
1175 .update_status = update_bl_status,
1176 };
1177
1178 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1179 {
1180 struct backlight_device *bd = asus->backlight_device;
1181 int old = bd->props.brightness;
1182 int new = old;
1183
1184 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1185 new = code - NOTIFY_BRNUP_MIN + 1;
1186 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1187 new = code - NOTIFY_BRNDOWN_MIN;
1188
1189 bd->props.brightness = new;
1190 backlight_update_status(bd);
1191 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1192
1193 return old;
1194 }
1195
1196 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1197 {
1198 struct backlight_device *bd;
1199 struct backlight_properties props;
1200 int max;
1201 int power;
1202
1203 max = read_brightness_max(asus);
1204
1205 if (max == -ENODEV)
1206 max = 0;
1207 else if (max < 0)
1208 return max;
1209
1210 power = read_backlight_power(asus);
1211
1212 if (power == -ENODEV)
1213 power = FB_BLANK_UNBLANK;
1214 else if (power < 0)
1215 return power;
1216
1217 memset(&props, 0, sizeof(struct backlight_properties));
1218 props.type = BACKLIGHT_PLATFORM;
1219 props.max_brightness = max;
1220 bd = backlight_device_register(asus->driver->name,
1221 &asus->platform_device->dev, asus,
1222 &asus_wmi_bl_ops, &props);
1223 if (IS_ERR(bd)) {
1224 pr_err("Could not register backlight device\n");
1225 return PTR_ERR(bd);
1226 }
1227
1228 asus->backlight_device = bd;
1229
1230 if (asus->driver->quirks->store_backlight_power)
1231 asus->driver->panel_power = power;
1232
1233 bd->props.brightness = read_brightness(bd);
1234 bd->props.power = power;
1235 backlight_update_status(bd);
1236
1237 asus->driver->brightness = bd->props.brightness;
1238
1239 return 0;
1240 }
1241
1242 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1243 {
1244 if (asus->backlight_device)
1245 backlight_device_unregister(asus->backlight_device);
1246
1247 asus->backlight_device = NULL;
1248 }
1249
1250 static void asus_wmi_notify(u32 value, void *context)
1251 {
1252 struct asus_wmi *asus = context;
1253 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1254 union acpi_object *obj;
1255 acpi_status status;
1256 int code;
1257 int orig_code;
1258 unsigned int key_value = 1;
1259 bool autorelease = 1;
1260
1261 status = wmi_get_event_data(value, &response);
1262 if (status != AE_OK) {
1263 pr_err("bad event status 0x%x\n", status);
1264 return;
1265 }
1266
1267 obj = (union acpi_object *)response.pointer;
1268
1269 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1270 goto exit;
1271
1272 code = obj->integer.value;
1273 orig_code = code;
1274
1275 if (asus->driver->key_filter) {
1276 asus->driver->key_filter(asus->driver, &code, &key_value,
1277 &autorelease);
1278 if (code == ASUS_WMI_KEY_IGNORE)
1279 goto exit;
1280 }
1281
1282 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1283 code = NOTIFY_BRNUP_MIN;
1284 else if (code >= NOTIFY_BRNDOWN_MIN &&
1285 code <= NOTIFY_BRNDOWN_MAX)
1286 code = NOTIFY_BRNDOWN_MIN;
1287
1288 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1289 if (!acpi_video_backlight_support())
1290 asus_wmi_backlight_notify(asus, orig_code);
1291 } else if (!sparse_keymap_report_event(asus->inputdev, code,
1292 key_value, autorelease))
1293 pr_info("Unknown key %x pressed\n", code);
1294
1295 exit:
1296 kfree(obj);
1297 }
1298
1299 /*
1300 * Sys helpers
1301 */
1302 static int parse_arg(const char *buf, unsigned long count, int *val)
1303 {
1304 if (!count)
1305 return 0;
1306 if (sscanf(buf, "%i", val) != 1)
1307 return -EINVAL;
1308 return count;
1309 }
1310
1311 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1312 const char *buf, size_t count)
1313 {
1314 u32 retval;
1315 int rv, err, value;
1316
1317 value = asus_wmi_get_devstate_simple(asus, devid);
1318 if (value == -ENODEV) /* Check device presence */
1319 return value;
1320
1321 rv = parse_arg(buf, count, &value);
1322 err = asus_wmi_set_devstate(devid, value, &retval);
1323
1324 if (err < 0)
1325 return err;
1326
1327 return rv;
1328 }
1329
1330 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1331 {
1332 int value = asus_wmi_get_devstate_simple(asus, devid);
1333
1334 if (value < 0)
1335 return value;
1336
1337 return sprintf(buf, "%d\n", value);
1338 }
1339
1340 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1341 static ssize_t show_##_name(struct device *dev, \
1342 struct device_attribute *attr, \
1343 char *buf) \
1344 { \
1345 struct asus_wmi *asus = dev_get_drvdata(dev); \
1346 \
1347 return show_sys_wmi(asus, _cm, buf); \
1348 } \
1349 static ssize_t store_##_name(struct device *dev, \
1350 struct device_attribute *attr, \
1351 const char *buf, size_t count) \
1352 { \
1353 struct asus_wmi *asus = dev_get_drvdata(dev); \
1354 \
1355 return store_sys_wmi(asus, _cm, buf, count); \
1356 } \
1357 static struct device_attribute dev_attr_##_name = { \
1358 .attr = { \
1359 .name = __stringify(_name), \
1360 .mode = _mode }, \
1361 .show = show_##_name, \
1362 .store = store_##_name, \
1363 }
1364
1365 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1366 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1367 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1368
1369 static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1370 const char *buf, size_t count)
1371 {
1372 int value, rv;
1373
1374 if (!count || sscanf(buf, "%i", &value) != 1)
1375 return -EINVAL;
1376 if (value < 0 || value > 2)
1377 return -EINVAL;
1378
1379 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1380 if (rv < 0)
1381 return rv;
1382
1383 return count;
1384 }
1385
1386 static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1387
1388 static struct attribute *platform_attributes[] = {
1389 &dev_attr_cpufv.attr,
1390 &dev_attr_camera.attr,
1391 &dev_attr_cardr.attr,
1392 &dev_attr_touchpad.attr,
1393 NULL
1394 };
1395
1396 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1397 struct attribute *attr, int idx)
1398 {
1399 struct device *dev = container_of(kobj, struct device, kobj);
1400 struct platform_device *pdev = to_platform_device(dev);
1401 struct asus_wmi *asus = platform_get_drvdata(pdev);
1402 bool ok = true;
1403 int devid = -1;
1404
1405 if (attr == &dev_attr_camera.attr)
1406 devid = ASUS_WMI_DEVID_CAMERA;
1407 else if (attr == &dev_attr_cardr.attr)
1408 devid = ASUS_WMI_DEVID_CARDREADER;
1409 else if (attr == &dev_attr_touchpad.attr)
1410 devid = ASUS_WMI_DEVID_TOUCHPAD;
1411
1412 if (devid != -1)
1413 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1414
1415 return ok ? attr->mode : 0;
1416 }
1417
1418 static struct attribute_group platform_attribute_group = {
1419 .is_visible = asus_sysfs_is_visible,
1420 .attrs = platform_attributes
1421 };
1422
1423 static void asus_wmi_sysfs_exit(struct platform_device *device)
1424 {
1425 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1426 }
1427
1428 static int asus_wmi_sysfs_init(struct platform_device *device)
1429 {
1430 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1431 }
1432
1433 /*
1434 * Platform device
1435 */
1436 static int asus_wmi_platform_init(struct asus_wmi *asus)
1437 {
1438 int rv;
1439
1440 /* INIT enable hotkeys on some models */
1441 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1442 pr_info("Initialization: %#x", rv);
1443
1444 /* We don't know yet what to do with this version... */
1445 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1446 pr_info("BIOS WMI version: %d.%d", rv >> 16, rv & 0xFF);
1447 asus->spec = rv;
1448 }
1449
1450 /*
1451 * The SFUN method probably allows the original driver to get the list
1452 * of features supported by a given model. For now, 0x0100 or 0x0800
1453 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1454 * The significance of others is yet to be found.
1455 */
1456 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1457 pr_info("SFUN value: %#x", rv);
1458 asus->sfun = rv;
1459 }
1460
1461 /*
1462 * Eee PC and Notebooks seems to have different method_id for DSTS,
1463 * but it may also be related to the BIOS's SPEC.
1464 * Note, on most Eeepc, there is no way to check if a method exist
1465 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1466 * but once again, SPEC may probably be used for that kind of things.
1467 */
1468 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1469 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1470 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1471 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1472
1473 if (!asus->dsts_id) {
1474 pr_err("Can't find DSTS");
1475 return -ENODEV;
1476 }
1477
1478 /* CWAP allow to define the behavior of the Fn+F2 key,
1479 * this method doesn't seems to be present on Eee PCs */
1480 if (asus->driver->quirks->wapf >= 0)
1481 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
1482 asus->driver->quirks->wapf, NULL);
1483
1484 return asus_wmi_sysfs_init(asus->platform_device);
1485 }
1486
1487 static void asus_wmi_platform_exit(struct asus_wmi *asus)
1488 {
1489 asus_wmi_sysfs_exit(asus->platform_device);
1490 }
1491
1492 /*
1493 * debugfs
1494 */
1495 struct asus_wmi_debugfs_node {
1496 struct asus_wmi *asus;
1497 char *name;
1498 int (*show) (struct seq_file *m, void *data);
1499 };
1500
1501 static int show_dsts(struct seq_file *m, void *data)
1502 {
1503 struct asus_wmi *asus = m->private;
1504 int err;
1505 u32 retval = -1;
1506
1507 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1508
1509 if (err < 0)
1510 return err;
1511
1512 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1513
1514 return 0;
1515 }
1516
1517 static int show_devs(struct seq_file *m, void *data)
1518 {
1519 struct asus_wmi *asus = m->private;
1520 int err;
1521 u32 retval = -1;
1522
1523 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1524 &retval);
1525
1526 if (err < 0)
1527 return err;
1528
1529 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1530 asus->debug.ctrl_param, retval);
1531
1532 return 0;
1533 }
1534
1535 static int show_call(struct seq_file *m, void *data)
1536 {
1537 struct asus_wmi *asus = m->private;
1538 struct bios_args args = {
1539 .arg0 = asus->debug.dev_id,
1540 .arg1 = asus->debug.ctrl_param,
1541 };
1542 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1543 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1544 union acpi_object *obj;
1545 acpi_status status;
1546
1547 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1548 1, asus->debug.method_id,
1549 &input, &output);
1550
1551 if (ACPI_FAILURE(status))
1552 return -EIO;
1553
1554 obj = (union acpi_object *)output.pointer;
1555 if (obj && obj->type == ACPI_TYPE_INTEGER)
1556 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1557 asus->debug.dev_id, asus->debug.ctrl_param,
1558 (u32) obj->integer.value);
1559 else
1560 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1561 asus->debug.dev_id, asus->debug.ctrl_param,
1562 obj ? obj->type : -1);
1563
1564 kfree(obj);
1565
1566 return 0;
1567 }
1568
1569 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1570 {NULL, "devs", show_devs},
1571 {NULL, "dsts", show_dsts},
1572 {NULL, "call", show_call},
1573 };
1574
1575 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1576 {
1577 struct asus_wmi_debugfs_node *node = inode->i_private;
1578
1579 return single_open(file, node->show, node->asus);
1580 }
1581
1582 static const struct file_operations asus_wmi_debugfs_io_ops = {
1583 .owner = THIS_MODULE,
1584 .open = asus_wmi_debugfs_open,
1585 .read = seq_read,
1586 .llseek = seq_lseek,
1587 .release = single_release,
1588 };
1589
1590 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1591 {
1592 debugfs_remove_recursive(asus->debug.root);
1593 }
1594
1595 static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1596 {
1597 struct dentry *dent;
1598 int i;
1599
1600 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1601 if (!asus->debug.root) {
1602 pr_err("failed to create debugfs directory");
1603 goto error_debugfs;
1604 }
1605
1606 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1607 asus->debug.root, &asus->debug.method_id);
1608 if (!dent)
1609 goto error_debugfs;
1610
1611 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1612 asus->debug.root, &asus->debug.dev_id);
1613 if (!dent)
1614 goto error_debugfs;
1615
1616 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1617 asus->debug.root, &asus->debug.ctrl_param);
1618 if (!dent)
1619 goto error_debugfs;
1620
1621 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1622 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1623
1624 node->asus = asus;
1625 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1626 asus->debug.root, node,
1627 &asus_wmi_debugfs_io_ops);
1628 if (!dent) {
1629 pr_err("failed to create debug file: %s\n", node->name);
1630 goto error_debugfs;
1631 }
1632 }
1633
1634 return 0;
1635
1636 error_debugfs:
1637 asus_wmi_debugfs_exit(asus);
1638 return -ENOMEM;
1639 }
1640
1641 /*
1642 * WMI Driver
1643 */
1644 static int asus_wmi_add(struct platform_device *pdev)
1645 {
1646 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1647 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1648 struct asus_wmi *asus;
1649 acpi_status status;
1650 int err;
1651
1652 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1653 if (!asus)
1654 return -ENOMEM;
1655
1656 asus->driver = wdrv;
1657 asus->platform_device = pdev;
1658 wdrv->platform_device = pdev;
1659 platform_set_drvdata(asus->platform_device, asus);
1660
1661 if (wdrv->detect_quirks)
1662 wdrv->detect_quirks(asus->driver);
1663
1664 err = asus_wmi_platform_init(asus);
1665 if (err)
1666 goto fail_platform;
1667
1668 err = asus_wmi_input_init(asus);
1669 if (err)
1670 goto fail_input;
1671
1672 err = asus_wmi_hwmon_init(asus);
1673 if (err)
1674 goto fail_hwmon;
1675
1676 err = asus_wmi_led_init(asus);
1677 if (err)
1678 goto fail_leds;
1679
1680 err = asus_wmi_rfkill_init(asus);
1681 if (err)
1682 goto fail_rfkill;
1683
1684 if (!acpi_video_backlight_support()) {
1685 err = asus_wmi_backlight_init(asus);
1686 if (err && err != -ENODEV)
1687 goto fail_backlight;
1688 } else
1689 pr_info("Backlight controlled by ACPI video driver\n");
1690
1691 status = wmi_install_notify_handler(asus->driver->event_guid,
1692 asus_wmi_notify, asus);
1693 if (ACPI_FAILURE(status)) {
1694 pr_err("Unable to register notify handler - %d\n", status);
1695 err = -ENODEV;
1696 goto fail_wmi_handler;
1697 }
1698
1699 err = asus_wmi_debugfs_init(asus);
1700 if (err)
1701 goto fail_debugfs;
1702
1703 return 0;
1704
1705 fail_debugfs:
1706 wmi_remove_notify_handler(asus->driver->event_guid);
1707 fail_wmi_handler:
1708 asus_wmi_backlight_exit(asus);
1709 fail_backlight:
1710 asus_wmi_rfkill_exit(asus);
1711 fail_rfkill:
1712 asus_wmi_led_exit(asus);
1713 fail_leds:
1714 asus_wmi_hwmon_exit(asus);
1715 fail_hwmon:
1716 asus_wmi_input_exit(asus);
1717 fail_input:
1718 asus_wmi_platform_exit(asus);
1719 fail_platform:
1720 kfree(asus);
1721 return err;
1722 }
1723
1724 static int asus_wmi_remove(struct platform_device *device)
1725 {
1726 struct asus_wmi *asus;
1727
1728 asus = platform_get_drvdata(device);
1729 wmi_remove_notify_handler(asus->driver->event_guid);
1730 asus_wmi_backlight_exit(asus);
1731 asus_wmi_input_exit(asus);
1732 asus_wmi_hwmon_exit(asus);
1733 asus_wmi_led_exit(asus);
1734 asus_wmi_rfkill_exit(asus);
1735 asus_wmi_debugfs_exit(asus);
1736 asus_wmi_platform_exit(asus);
1737
1738 kfree(asus);
1739 return 0;
1740 }
1741
1742 /*
1743 * Platform driver - hibernate/resume callbacks
1744 */
1745 static int asus_hotk_thaw(struct device *device)
1746 {
1747 struct asus_wmi *asus = dev_get_drvdata(device);
1748
1749 if (asus->wlan.rfkill) {
1750 bool wlan;
1751
1752 /*
1753 * Work around bios bug - acpi _PTS turns off the wireless led
1754 * during suspend. Normally it restores it on resume, but
1755 * we should kick it ourselves in case hibernation is aborted.
1756 */
1757 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1758 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1759 }
1760
1761 return 0;
1762 }
1763
1764 static int asus_hotk_restore(struct device *device)
1765 {
1766 struct asus_wmi *asus = dev_get_drvdata(device);
1767 int bl;
1768
1769 /* Refresh both wlan rfkill state and pci hotplug */
1770 if (asus->wlan.rfkill)
1771 asus_rfkill_hotplug(asus);
1772
1773 if (asus->bluetooth.rfkill) {
1774 bl = !asus_wmi_get_devstate_simple(asus,
1775 ASUS_WMI_DEVID_BLUETOOTH);
1776 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1777 }
1778 if (asus->wimax.rfkill) {
1779 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1780 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1781 }
1782 if (asus->wwan3g.rfkill) {
1783 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1784 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1785 }
1786 if (asus->gps.rfkill) {
1787 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
1788 rfkill_set_sw_state(asus->gps.rfkill, bl);
1789 }
1790 if (asus->uwb.rfkill) {
1791 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
1792 rfkill_set_sw_state(asus->uwb.rfkill, bl);
1793 }
1794
1795 return 0;
1796 }
1797
1798 static const struct dev_pm_ops asus_pm_ops = {
1799 .thaw = asus_hotk_thaw,
1800 .restore = asus_hotk_restore,
1801 };
1802
1803 static int asus_wmi_probe(struct platform_device *pdev)
1804 {
1805 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1806 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1807 int ret;
1808
1809 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1810 pr_warn("Management GUID not found\n");
1811 return -ENODEV;
1812 }
1813
1814 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1815 pr_warn("Event GUID not found\n");
1816 return -ENODEV;
1817 }
1818
1819 if (wdrv->probe) {
1820 ret = wdrv->probe(pdev);
1821 if (ret)
1822 return ret;
1823 }
1824
1825 return asus_wmi_add(pdev);
1826 }
1827
1828 static bool used;
1829
1830 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
1831 {
1832 struct platform_driver *platform_driver;
1833 struct platform_device *platform_device;
1834
1835 if (used)
1836 return -EBUSY;
1837
1838 platform_driver = &driver->platform_driver;
1839 platform_driver->remove = asus_wmi_remove;
1840 platform_driver->driver.owner = driver->owner;
1841 platform_driver->driver.name = driver->name;
1842 platform_driver->driver.pm = &asus_pm_ops;
1843
1844 platform_device = platform_create_bundle(platform_driver,
1845 asus_wmi_probe,
1846 NULL, 0, NULL, 0);
1847 if (IS_ERR(platform_device))
1848 return PTR_ERR(platform_device);
1849
1850 used = true;
1851 return 0;
1852 }
1853 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1854
1855 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1856 {
1857 platform_device_unregister(driver->platform_device);
1858 platform_driver_unregister(&driver->platform_driver);
1859 used = false;
1860 }
1861 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1862
1863 static int __init asus_wmi_init(void)
1864 {
1865 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1866 pr_info("Asus Management GUID not found");
1867 return -ENODEV;
1868 }
1869
1870 pr_info("ASUS WMI generic driver loaded");
1871 return 0;
1872 }
1873
1874 static void __exit asus_wmi_exit(void)
1875 {
1876 pr_info("ASUS WMI generic driver unloaded");
1877 }
1878
1879 module_init(asus_wmi_init);
1880 module_exit(asus_wmi_exit);
Linux with added FPC-III support