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-rw-r--r--drivers/platform/x86/asus-wmi.c1657
1 files changed, 1657 insertions, 0 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
new file mode 100644
index 000000000000..3c7857c71a23
--- /dev/null
+++ b/drivers/platform/x86/asus-wmi.c
@@ -0,0 +1,1657 @@
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 <acpi/acpi_bus.h>
48#include <acpi/acpi_drivers.h>
49
50#include "asus-wmi.h"
51
52MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
53 "Yong Wang <yong.y.wang@intel.com>");
54MODULE_DESCRIPTION("Asus Generic WMI Driver");
55MODULE_LICENSE("GPL");
56
57#define to_platform_driver(drv) \
58 (container_of((drv), struct platform_driver, driver))
59
60#define to_asus_wmi_driver(pdrv) \
61 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
62
63#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
64
65#define NOTIFY_BRNUP_MIN 0x11
66#define NOTIFY_BRNUP_MAX 0x1f
67#define NOTIFY_BRNDOWN_MIN 0x20
68#define NOTIFY_BRNDOWN_MAX 0x2e
69
70/* WMI Methods */
71#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
72#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
73#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
74#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
75#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
76#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
77#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
78#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
79#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
80#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
81#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
82#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
83#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
84#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
85#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
86#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
87#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
88#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
89#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
90
91#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
92
93/* Wireless */
94#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
95#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
96#define ASUS_WMI_DEVID_WLAN 0x00010011
97#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
98#define ASUS_WMI_DEVID_GPS 0x00010015
99#define ASUS_WMI_DEVID_WIMAX 0x00010017
100#define ASUS_WMI_DEVID_WWAN3G 0x00010019
101#define ASUS_WMI_DEVID_UWB 0x00010021
102
103/* Leds */
104/* 0x000200XX and 0x000400XX */
105
106/* Backlight and Brightness */
107#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
108#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
109#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
110#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
111
112/* Misc */
113#define ASUS_WMI_DEVID_CAMERA 0x00060013
114
115/* Storage */
116#define ASUS_WMI_DEVID_CARDREADER 0x00080013
117
118/* Input */
119#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
120#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
121
122/* Fan, Thermal */
123#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
124#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
125
126/* Power */
127#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
128
129/* DSTS masks */
130#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
131#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
132#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
133#define ASUS_WMI_DSTS_USER_BIT 0x00020000
134#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
135#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
136#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
137
138struct bios_args {
139 u32 arg0;
140 u32 arg1;
141} __packed;
142
143/*
144 * <platform>/ - debugfs root directory
145 * dev_id - current dev_id
146 * ctrl_param - current ctrl_param
147 * method_id - current method_id
148 * devs - call DEVS(dev_id, ctrl_param) and print result
149 * dsts - call DSTS(dev_id) and print result
150 * call - call method_id(dev_id, ctrl_param) and print result
151 */
152struct asus_wmi_debug {
153 struct dentry *root;
154 u32 method_id;
155 u32 dev_id;
156 u32 ctrl_param;
157};
158
159struct asus_rfkill {
160 struct asus_wmi *asus;
161 struct rfkill *rfkill;
162 u32 dev_id;
163};
164
165struct asus_wmi {
166 int dsts_id;
167 int spec;
168 int sfun;
169
170 struct input_dev *inputdev;
171 struct backlight_device *backlight_device;
172 struct device *hwmon_device;
173 struct platform_device *platform_device;
174
175 struct led_classdev tpd_led;
176 int tpd_led_wk;
177 struct workqueue_struct *led_workqueue;
178 struct work_struct tpd_led_work;
179
180 struct asus_rfkill wlan;
181 struct asus_rfkill bluetooth;
182 struct asus_rfkill wimax;
183 struct asus_rfkill wwan3g;
184
185 struct hotplug_slot *hotplug_slot;
186 struct mutex hotplug_lock;
187 struct mutex wmi_lock;
188 struct workqueue_struct *hotplug_workqueue;
189 struct work_struct hotplug_work;
190
191 struct asus_wmi_debug debug;
192
193 struct asus_wmi_driver *driver;
194};
195
196static int asus_wmi_input_init(struct asus_wmi *asus)
197{
198 int err;
199
200 asus->inputdev = input_allocate_device();
201 if (!asus->inputdev)
202 return -ENOMEM;
203
204 asus->inputdev->name = asus->driver->input_name;
205 asus->inputdev->phys = asus->driver->input_phys;
206 asus->inputdev->id.bustype = BUS_HOST;
207 asus->inputdev->dev.parent = &asus->platform_device->dev;
208
209 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
210 if (err)
211 goto err_free_dev;
212
213 err = input_register_device(asus->inputdev);
214 if (err)
215 goto err_free_keymap;
216
217 return 0;
218
219err_free_keymap:
220 sparse_keymap_free(asus->inputdev);
221err_free_dev:
222 input_free_device(asus->inputdev);
223 return err;
224}
225
226static void asus_wmi_input_exit(struct asus_wmi *asus)
227{
228 if (asus->inputdev) {
229 sparse_keymap_free(asus->inputdev);
230 input_unregister_device(asus->inputdev);
231 }
232
233 asus->inputdev = NULL;
234}
235
236static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
237 u32 *retval)
238{
239 struct bios_args args = {
240 .arg0 = arg0,
241 .arg1 = arg1,
242 };
243 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
244 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
245 acpi_status status;
246 union acpi_object *obj;
247 u32 tmp;
248
249 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
250 &input, &output);
251
252 if (ACPI_FAILURE(status))
253 goto exit;
254
255 obj = (union acpi_object *)output.pointer;
256 if (obj && obj->type == ACPI_TYPE_INTEGER)
257 tmp = (u32) obj->integer.value;
258 else
259 tmp = 0;
260
261 if (retval)
262 *retval = tmp;
263
264 kfree(obj);
265
266exit:
267 if (ACPI_FAILURE(status))
268 return -EIO;
269
270 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
271 return -ENODEV;
272
273 return 0;
274}
275
276static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
277{
278 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
279}
280
281static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
282 u32 *retval)
283{
284 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
285 ctrl_param, retval);
286}
287
288/* Helper for special devices with magic return codes */
289static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
290 u32 dev_id, u32 mask)
291{
292 u32 retval = 0;
293 int err;
294
295 err = asus_wmi_get_devstate(asus, dev_id, &retval);
296
297 if (err < 0)
298 return err;
299
300 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
301 return -ENODEV;
302
303 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
304 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
305 return -ENODEV;
306 }
307
308 return retval & mask;
309}
310
311static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
312{
313 return asus_wmi_get_devstate_bits(asus, dev_id,
314 ASUS_WMI_DSTS_STATUS_BIT);
315}
316
317/*
318 * LEDs
319 */
320/*
321 * These functions actually update the LED's, and are called from a
322 * workqueue. By doing this as separate work rather than when the LED
323 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
324 * potentially bad time, such as a timer interrupt.
325 */
326static void tpd_led_update(struct work_struct *work)
327{
328 int ctrl_param;
329 struct asus_wmi *asus;
330
331 asus = container_of(work, struct asus_wmi, tpd_led_work);
332
333 ctrl_param = asus->tpd_led_wk;
334 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
335}
336
337static void tpd_led_set(struct led_classdev *led_cdev,
338 enum led_brightness value)
339{
340 struct asus_wmi *asus;
341
342 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
343
344 asus->tpd_led_wk = !!value;
345 queue_work(asus->led_workqueue, &asus->tpd_led_work);
346}
347
348static int read_tpd_led_state(struct asus_wmi *asus)
349{
350 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
351}
352
353static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
354{
355 struct asus_wmi *asus;
356
357 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
358
359 return read_tpd_led_state(asus);
360}
361
362static int asus_wmi_led_init(struct asus_wmi *asus)
363{
364 int rv;
365
366 if (read_tpd_led_state(asus) < 0)
367 return 0;
368
369 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
370 if (!asus->led_workqueue)
371 return -ENOMEM;
372 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
373
374 asus->tpd_led.name = "asus::touchpad";
375 asus->tpd_led.brightness_set = tpd_led_set;
376 asus->tpd_led.brightness_get = tpd_led_get;
377 asus->tpd_led.max_brightness = 1;
378
379 rv = led_classdev_register(&asus->platform_device->dev, &asus->tpd_led);
380 if (rv) {
381 destroy_workqueue(asus->led_workqueue);
382 return rv;
383 }
384
385 return 0;
386}
387
388static void asus_wmi_led_exit(struct asus_wmi *asus)
389{
390 if (asus->tpd_led.dev)
391 led_classdev_unregister(&asus->tpd_led);
392 if (asus->led_workqueue)
393 destroy_workqueue(asus->led_workqueue);
394}
395
396/*
397 * PCI hotplug (for wlan rfkill)
398 */
399static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
400{
401 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
402
403 if (result < 0)
404 return false;
405 return !result;
406}
407
408static void asus_rfkill_hotplug(struct asus_wmi *asus)
409{
410 struct pci_dev *dev;
411 struct pci_bus *bus;
412 bool blocked;
413 bool absent;
414 u32 l;
415
416 mutex_lock(&asus->wmi_lock);
417 blocked = asus_wlan_rfkill_blocked(asus);
418 mutex_unlock(&asus->wmi_lock);
419
420 mutex_lock(&asus->hotplug_lock);
421
422 if (asus->wlan.rfkill)
423 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
424
425 if (asus->hotplug_slot) {
426 bus = pci_find_bus(0, 1);
427 if (!bus) {
428 pr_warn("Unable to find PCI bus 1?\n");
429 goto out_unlock;
430 }
431
432 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
433 pr_err("Unable to read PCI config space?\n");
434 goto out_unlock;
435 }
436 absent = (l == 0xffffffff);
437
438 if (blocked != absent) {
439 pr_warn("BIOS says wireless lan is %s, "
440 "but the pci device is %s\n",
441 blocked ? "blocked" : "unblocked",
442 absent ? "absent" : "present");
443 pr_warn("skipped wireless hotplug as probably "
444 "inappropriate for this model\n");
445 goto out_unlock;
446 }
447
448 if (!blocked) {
449 dev = pci_get_slot(bus, 0);
450 if (dev) {
451 /* Device already present */
452 pci_dev_put(dev);
453 goto out_unlock;
454 }
455 dev = pci_scan_single_device(bus, 0);
456 if (dev) {
457 pci_bus_assign_resources(bus);
458 if (pci_bus_add_device(dev))
459 pr_err("Unable to hotplug wifi\n");
460 }
461 } else {
462 dev = pci_get_slot(bus, 0);
463 if (dev) {
464 pci_remove_bus_device(dev);
465 pci_dev_put(dev);
466 }
467 }
468 }
469
470out_unlock:
471 mutex_unlock(&asus->hotplug_lock);
472}
473
474static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
475{
476 struct asus_wmi *asus = data;
477
478 if (event != ACPI_NOTIFY_BUS_CHECK)
479 return;
480
481 /*
482 * We can't call directly asus_rfkill_hotplug because most
483 * of the time WMBC is still being executed and not reetrant.
484 * There is currently no way to tell ACPICA that we want this
485 * method to be serialized, we schedule a asus_rfkill_hotplug
486 * call later, in a safer context.
487 */
488 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
489}
490
491static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
492{
493 acpi_status status;
494 acpi_handle handle;
495
496 status = acpi_get_handle(NULL, node, &handle);
497
498 if (ACPI_SUCCESS(status)) {
499 status = acpi_install_notify_handler(handle,
500 ACPI_SYSTEM_NOTIFY,
501 asus_rfkill_notify, asus);
502 if (ACPI_FAILURE(status))
503 pr_warn("Failed to register notify on %s\n", node);
504 } else
505 return -ENODEV;
506
507 return 0;
508}
509
510static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
511{
512 acpi_status status = AE_OK;
513 acpi_handle handle;
514
515 status = acpi_get_handle(NULL, node, &handle);
516
517 if (ACPI_SUCCESS(status)) {
518 status = acpi_remove_notify_handler(handle,
519 ACPI_SYSTEM_NOTIFY,
520 asus_rfkill_notify);
521 if (ACPI_FAILURE(status))
522 pr_err("Error removing rfkill notify handler %s\n",
523 node);
524 }
525}
526
527static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
528 u8 *value)
529{
530 struct asus_wmi *asus = hotplug_slot->private;
531 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
532
533 if (result < 0)
534 return result;
535
536 *value = !!result;
537 return 0;
538}
539
540static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
541{
542 kfree(hotplug_slot->info);
543 kfree(hotplug_slot);
544}
545
546static struct hotplug_slot_ops asus_hotplug_slot_ops = {
547 .owner = THIS_MODULE,
548 .get_adapter_status = asus_get_adapter_status,
549 .get_power_status = asus_get_adapter_status,
550};
551
552static void asus_hotplug_work(struct work_struct *work)
553{
554 struct asus_wmi *asus;
555
556 asus = container_of(work, struct asus_wmi, hotplug_work);
557 asus_rfkill_hotplug(asus);
558}
559
560static int asus_setup_pci_hotplug(struct asus_wmi *asus)
561{
562 int ret = -ENOMEM;
563 struct pci_bus *bus = pci_find_bus(0, 1);
564
565 if (!bus) {
566 pr_err("Unable to find wifi PCI bus\n");
567 return -ENODEV;
568 }
569
570 asus->hotplug_workqueue =
571 create_singlethread_workqueue("hotplug_workqueue");
572 if (!asus->hotplug_workqueue)
573 goto error_workqueue;
574
575 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
576
577 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
578 if (!asus->hotplug_slot)
579 goto error_slot;
580
581 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
582 GFP_KERNEL);
583 if (!asus->hotplug_slot->info)
584 goto error_info;
585
586 asus->hotplug_slot->private = asus;
587 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
588 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
589 asus_get_adapter_status(asus->hotplug_slot,
590 &asus->hotplug_slot->info->adapter_status);
591
592 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
593 if (ret) {
594 pr_err("Unable to register hotplug slot - %d\n", ret);
595 goto error_register;
596 }
597
598 return 0;
599
600error_register:
601 kfree(asus->hotplug_slot->info);
602error_info:
603 kfree(asus->hotplug_slot);
604 asus->hotplug_slot = NULL;
605error_slot:
606 destroy_workqueue(asus->hotplug_workqueue);
607error_workqueue:
608 return ret;
609}
610
611/*
612 * Rfkill devices
613 */
614static int asus_rfkill_set(void *data, bool blocked)
615{
616 struct asus_rfkill *priv = data;
617 u32 ctrl_param = !blocked;
618
619 return asus_wmi_set_devstate(priv->dev_id, ctrl_param, NULL);
620}
621
622static void asus_rfkill_query(struct rfkill *rfkill, void *data)
623{
624 struct asus_rfkill *priv = data;
625 int result;
626
627 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
628
629 if (result < 0)
630 return;
631
632 rfkill_set_sw_state(priv->rfkill, !result);
633}
634
635static int asus_rfkill_wlan_set(void *data, bool blocked)
636{
637 struct asus_rfkill *priv = data;
638 struct asus_wmi *asus = priv->asus;
639 int ret;
640
641 /*
642 * This handler is enabled only if hotplug is enabled.
643 * In this case, the asus_wmi_set_devstate() will
644 * trigger a wmi notification and we need to wait
645 * this call to finish before being able to call
646 * any wmi method
647 */
648 mutex_lock(&asus->wmi_lock);
649 ret = asus_rfkill_set(data, blocked);
650 mutex_unlock(&asus->wmi_lock);
651 return ret;
652}
653
654static const struct rfkill_ops asus_rfkill_wlan_ops = {
655 .set_block = asus_rfkill_wlan_set,
656 .query = asus_rfkill_query,
657};
658
659static const struct rfkill_ops asus_rfkill_ops = {
660 .set_block = asus_rfkill_set,
661 .query = asus_rfkill_query,
662};
663
664static int asus_new_rfkill(struct asus_wmi *asus,
665 struct asus_rfkill *arfkill,
666 const char *name, enum rfkill_type type, int dev_id)
667{
668 int result = asus_wmi_get_devstate_simple(asus, dev_id);
669 struct rfkill **rfkill = &arfkill->rfkill;
670
671 if (result < 0)
672 return result;
673
674 arfkill->dev_id = dev_id;
675 arfkill->asus = asus;
676
677 if (dev_id == ASUS_WMI_DEVID_WLAN && asus->driver->hotplug_wireless)
678 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
679 &asus_rfkill_wlan_ops, arfkill);
680 else
681 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
682 &asus_rfkill_ops, arfkill);
683
684 if (!*rfkill)
685 return -EINVAL;
686
687 rfkill_init_sw_state(*rfkill, !result);
688 result = rfkill_register(*rfkill);
689 if (result) {
690 rfkill_destroy(*rfkill);
691 *rfkill = NULL;
692 return result;
693 }
694 return 0;
695}
696
697static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
698{
699 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
700 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
701 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
702 if (asus->wlan.rfkill) {
703 rfkill_unregister(asus->wlan.rfkill);
704 rfkill_destroy(asus->wlan.rfkill);
705 asus->wlan.rfkill = NULL;
706 }
707 /*
708 * Refresh pci hotplug in case the rfkill state was changed after
709 * asus_unregister_rfkill_notifier()
710 */
711 asus_rfkill_hotplug(asus);
712 if (asus->hotplug_slot)
713 pci_hp_deregister(asus->hotplug_slot);
714 if (asus->hotplug_workqueue)
715 destroy_workqueue(asus->hotplug_workqueue);
716
717 if (asus->bluetooth.rfkill) {
718 rfkill_unregister(asus->bluetooth.rfkill);
719 rfkill_destroy(asus->bluetooth.rfkill);
720 asus->bluetooth.rfkill = NULL;
721 }
722 if (asus->wimax.rfkill) {
723 rfkill_unregister(asus->wimax.rfkill);
724 rfkill_destroy(asus->wimax.rfkill);
725 asus->wimax.rfkill = NULL;
726 }
727 if (asus->wwan3g.rfkill) {
728 rfkill_unregister(asus->wwan3g.rfkill);
729 rfkill_destroy(asus->wwan3g.rfkill);
730 asus->wwan3g.rfkill = NULL;
731 }
732}
733
734static int asus_wmi_rfkill_init(struct asus_wmi *asus)
735{
736 int result = 0;
737
738 mutex_init(&asus->hotplug_lock);
739 mutex_init(&asus->wmi_lock);
740
741 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
742 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
743
744 if (result && result != -ENODEV)
745 goto exit;
746
747 result = asus_new_rfkill(asus, &asus->bluetooth,
748 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
749 ASUS_WMI_DEVID_BLUETOOTH);
750
751 if (result && result != -ENODEV)
752 goto exit;
753
754 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
755 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
756
757 if (result && result != -ENODEV)
758 goto exit;
759
760 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
761 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
762
763 if (result && result != -ENODEV)
764 goto exit;
765
766 if (!asus->driver->hotplug_wireless)
767 goto exit;
768
769 result = asus_setup_pci_hotplug(asus);
770 /*
771 * If we get -EBUSY then something else is handling the PCI hotplug -
772 * don't fail in this case
773 */
774 if (result == -EBUSY)
775 result = 0;
776
777 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
778 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
779 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
780 /*
781 * Refresh pci hotplug in case the rfkill state was changed during
782 * setup.
783 */
784 asus_rfkill_hotplug(asus);
785
786exit:
787 if (result && result != -ENODEV)
788 asus_wmi_rfkill_exit(asus);
789
790 if (result == -ENODEV)
791 result = 0;
792
793 return result;
794}
795
796/*
797 * Hwmon device
798 */
799static ssize_t asus_hwmon_pwm1(struct device *dev,
800 struct device_attribute *attr,
801 char *buf)
802{
803 struct asus_wmi *asus = dev_get_drvdata(dev);
804 u32 value;
805 int err;
806
807 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
808
809 if (err < 0)
810 return err;
811
812 value |= 0xFF;
813
814 if (value == 1) /* Low Speed */
815 value = 85;
816 else if (value == 2)
817 value = 170;
818 else if (value == 3)
819 value = 255;
820 else if (value != 0) {
821 pr_err("Unknown fan speed %#x", value);
822 value = -1;
823 }
824
825 return sprintf(buf, "%d\n", value);
826}
827
828static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
829
830static ssize_t
831show_name(struct device *dev, struct device_attribute *attr, char *buf)
832{
833 return sprintf(buf, "asus\n");
834}
835static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
836
837static struct attribute *hwmon_attributes[] = {
838 &sensor_dev_attr_pwm1.dev_attr.attr,
839 &sensor_dev_attr_name.dev_attr.attr,
840 NULL
841};
842
843static mode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
844 struct attribute *attr, int idx)
845{
846 struct device *dev = container_of(kobj, struct device, kobj);
847 struct platform_device *pdev = to_platform_device(dev->parent);
848 struct asus_wmi *asus = platform_get_drvdata(pdev);
849 bool ok = true;
850 int dev_id = -1;
851 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
852
853 if (attr == &sensor_dev_attr_pwm1.dev_attr.attr)
854 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
855
856 if (dev_id != -1) {
857 int err = asus_wmi_get_devstate(asus, dev_id, &value);
858
859 if (err < 0)
860 return err;
861 }
862
863 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
864 /*
865 * We need to find a better way, probably using sfun,
866 * bits or spec ...
867 * Currently we disable it if:
868 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
869 * - reverved bits are non-zero
870 * - sfun and presence bit are not set
871 */
872 if (value != ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
873 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
874 ok = false;
875 }
876
877 return ok ? attr->mode : 0;
878}
879
880static struct attribute_group hwmon_attribute_group = {
881 .is_visible = asus_hwmon_sysfs_is_visible,
882 .attrs = hwmon_attributes
883};
884
885static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
886{
887 struct device *hwmon;
888
889 hwmon = asus->hwmon_device;
890 if (!hwmon)
891 return;
892 sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
893 hwmon_device_unregister(hwmon);
894 asus->hwmon_device = NULL;
895}
896
897static int asus_wmi_hwmon_init(struct asus_wmi *asus)
898{
899 struct device *hwmon;
900 int result;
901
902 hwmon = hwmon_device_register(&asus->platform_device->dev);
903 if (IS_ERR(hwmon)) {
904 pr_err("Could not register asus hwmon device\n");
905 return PTR_ERR(hwmon);
906 }
907 asus->hwmon_device = hwmon;
908 result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
909 if (result)
910 asus_wmi_hwmon_exit(asus);
911 return result;
912}
913
914/*
915 * Backlight
916 */
917static int read_backlight_power(struct asus_wmi *asus)
918{
919 int ret = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_BACKLIGHT);
920
921 if (ret < 0)
922 return ret;
923
924 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
925}
926
927static int read_brightness_max(struct asus_wmi *asus)
928{
929 u32 retval;
930 int err;
931
932 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
933
934 if (err < 0)
935 return err;
936
937 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
938 retval >>= 8;
939
940 if (!retval)
941 return -ENODEV;
942
943 return retval;
944}
945
946static int read_brightness(struct backlight_device *bd)
947{
948 struct asus_wmi *asus = bl_get_data(bd);
949 u32 retval;
950 int err;
951
952 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
953
954 if (err < 0)
955 return err;
956
957 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
958}
959
960static int update_bl_status(struct backlight_device *bd)
961{
962 struct asus_wmi *asus = bl_get_data(bd);
963 u32 ctrl_param;
964 int power, err;
965
966 ctrl_param = bd->props.brightness;
967
968 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
969 ctrl_param, NULL);
970
971 if (err < 0)
972 return err;
973
974 power = read_backlight_power(asus);
975 if (power != -ENODEV && bd->props.power != power) {
976 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
977 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
978 ctrl_param, NULL);
979 }
980 return err;
981}
982
983static const struct backlight_ops asus_wmi_bl_ops = {
984 .get_brightness = read_brightness,
985 .update_status = update_bl_status,
986};
987
988static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
989{
990 struct backlight_device *bd = asus->backlight_device;
991 int old = bd->props.brightness;
992 int new = old;
993
994 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
995 new = code - NOTIFY_BRNUP_MIN + 1;
996 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
997 new = code - NOTIFY_BRNDOWN_MIN;
998
999 bd->props.brightness = new;
1000 backlight_update_status(bd);
1001 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1002
1003 return old;
1004}
1005
1006static int asus_wmi_backlight_init(struct asus_wmi *asus)
1007{
1008 struct backlight_device *bd;
1009 struct backlight_properties props;
1010 int max;
1011 int power;
1012
1013 max = read_brightness_max(asus);
1014
1015 if (max == -ENODEV)
1016 max = 0;
1017 else if (max < 0)
1018 return max;
1019
1020 power = read_backlight_power(asus);
1021
1022 if (power == -ENODEV)
1023 power = FB_BLANK_UNBLANK;
1024 else if (power < 0)
1025 return power;
1026
1027 memset(&props, 0, sizeof(struct backlight_properties));
1028 props.type = BACKLIGHT_PLATFORM;
1029 props.max_brightness = max;
1030 bd = backlight_device_register(asus->driver->name,
1031 &asus->platform_device->dev, asus,
1032 &asus_wmi_bl_ops, &props);
1033 if (IS_ERR(bd)) {
1034 pr_err("Could not register backlight device\n");
1035 return PTR_ERR(bd);
1036 }
1037
1038 asus->backlight_device = bd;
1039
1040 bd->props.brightness = read_brightness(bd);
1041 bd->props.power = power;
1042 backlight_update_status(bd);
1043
1044 return 0;
1045}
1046
1047static void asus_wmi_backlight_exit(struct asus_wmi *asus)
1048{
1049 if (asus->backlight_device)
1050 backlight_device_unregister(asus->backlight_device);
1051
1052 asus->backlight_device = NULL;
1053}
1054
1055static void asus_wmi_notify(u32 value, void *context)
1056{
1057 struct asus_wmi *asus = context;
1058 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1059 union acpi_object *obj;
1060 acpi_status status;
1061 int code;
1062 int orig_code;
1063
1064 status = wmi_get_event_data(value, &response);
1065 if (status != AE_OK) {
1066 pr_err("bad event status 0x%x\n", status);
1067 return;
1068 }
1069
1070 obj = (union acpi_object *)response.pointer;
1071
1072 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1073 goto exit;
1074
1075 code = obj->integer.value;
1076 orig_code = code;
1077
1078 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1079 code = NOTIFY_BRNUP_MIN;
1080 else if (code >= NOTIFY_BRNDOWN_MIN &&
1081 code <= NOTIFY_BRNDOWN_MAX)
1082 code = NOTIFY_BRNDOWN_MIN;
1083
1084 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
1085 if (!acpi_video_backlight_support())
1086 asus_wmi_backlight_notify(asus, orig_code);
1087 } else if (!sparse_keymap_report_event(asus->inputdev, code, 1, true))
1088 pr_info("Unknown key %x pressed\n", code);
1089
1090exit:
1091 kfree(obj);
1092}
1093
1094/*
1095 * Sys helpers
1096 */
1097static int parse_arg(const char *buf, unsigned long count, int *val)
1098{
1099 if (!count)
1100 return 0;
1101 if (sscanf(buf, "%i", val) != 1)
1102 return -EINVAL;
1103 return count;
1104}
1105
1106static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1107 const char *buf, size_t count)
1108{
1109 u32 retval;
1110 int rv, err, value;
1111
1112 value = asus_wmi_get_devstate_simple(asus, devid);
1113 if (value == -ENODEV) /* Check device presence */
1114 return value;
1115
1116 rv = parse_arg(buf, count, &value);
1117 err = asus_wmi_set_devstate(devid, value, &retval);
1118
1119 if (err < 0)
1120 return err;
1121
1122 return rv;
1123}
1124
1125static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
1126{
1127 int value = asus_wmi_get_devstate_simple(asus, devid);
1128
1129 if (value < 0)
1130 return value;
1131
1132 return sprintf(buf, "%d\n", value);
1133}
1134
1135#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1136 static ssize_t show_##_name(struct device *dev, \
1137 struct device_attribute *attr, \
1138 char *buf) \
1139 { \
1140 struct asus_wmi *asus = dev_get_drvdata(dev); \
1141 \
1142 return show_sys_wmi(asus, _cm, buf); \
1143 } \
1144 static ssize_t store_##_name(struct device *dev, \
1145 struct device_attribute *attr, \
1146 const char *buf, size_t count) \
1147 { \
1148 struct asus_wmi *asus = dev_get_drvdata(dev); \
1149 \
1150 return store_sys_wmi(asus, _cm, buf, count); \
1151 } \
1152 static struct device_attribute dev_attr_##_name = { \
1153 .attr = { \
1154 .name = __stringify(_name), \
1155 .mode = _mode }, \
1156 .show = show_##_name, \
1157 .store = store_##_name, \
1158 }
1159
1160ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1161ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1162ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
1163
1164static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1165 const char *buf, size_t count)
1166{
1167 int value;
1168
1169 if (!count || sscanf(buf, "%i", &value) != 1)
1170 return -EINVAL;
1171 if (value < 0 || value > 2)
1172 return -EINVAL;
1173
1174 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1175}
1176
1177static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1178
1179static struct attribute *platform_attributes[] = {
1180 &dev_attr_cpufv.attr,
1181 &dev_attr_camera.attr,
1182 &dev_attr_cardr.attr,
1183 &dev_attr_touchpad.attr,
1184 NULL
1185};
1186
1187static mode_t asus_sysfs_is_visible(struct kobject *kobj,
1188 struct attribute *attr, int idx)
1189{
1190 struct device *dev = container_of(kobj, struct device, kobj);
1191 struct platform_device *pdev = to_platform_device(dev);
1192 struct asus_wmi *asus = platform_get_drvdata(pdev);
1193 bool ok = true;
1194 int devid = -1;
1195
1196 if (attr == &dev_attr_camera.attr)
1197 devid = ASUS_WMI_DEVID_CAMERA;
1198 else if (attr == &dev_attr_cardr.attr)
1199 devid = ASUS_WMI_DEVID_CARDREADER;
1200 else if (attr == &dev_attr_touchpad.attr)
1201 devid = ASUS_WMI_DEVID_TOUCHPAD;
1202
1203 if (devid != -1)
1204 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
1205
1206 return ok ? attr->mode : 0;
1207}
1208
1209static struct attribute_group platform_attribute_group = {
1210 .is_visible = asus_sysfs_is_visible,
1211 .attrs = platform_attributes
1212};
1213
1214static void asus_wmi_sysfs_exit(struct platform_device *device)
1215{
1216 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
1217}
1218
1219static int asus_wmi_sysfs_init(struct platform_device *device)
1220{
1221 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
1222}
1223
1224/*
1225 * Platform device
1226 */
1227static int asus_wmi_platform_init(struct asus_wmi *asus)
1228{
1229 int rv;
1230
1231 /* INIT enable hotkeys on some models */
1232 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
1233 pr_info("Initialization: %#x", rv);
1234
1235 /* We don't know yet what to do with this version... */
1236 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
1237 pr_info("BIOS WMI version: %d.%d", rv >> 8, rv & 0xFF);
1238 asus->spec = rv;
1239 }
1240
1241 /*
1242 * The SFUN method probably allows the original driver to get the list
1243 * of features supported by a given model. For now, 0x0100 or 0x0800
1244 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1245 * The significance of others is yet to be found.
1246 */
1247 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
1248 pr_info("SFUN value: %#x", rv);
1249 asus->sfun = rv;
1250 }
1251
1252 /*
1253 * Eee PC and Notebooks seems to have different method_id for DSTS,
1254 * but it may also be related to the BIOS's SPEC.
1255 * Note, on most Eeepc, there is no way to check if a method exist
1256 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1257 * but once again, SPEC may probably be used for that kind of things.
1258 */
1259 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1260 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
1261 else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
1262 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1263
1264 if (!asus->dsts_id) {
1265 pr_err("Can't find DSTS");
1266 return -ENODEV;
1267 }
1268
1269 return asus_wmi_sysfs_init(asus->platform_device);
1270}
1271
1272static void asus_wmi_platform_exit(struct asus_wmi *asus)
1273{
1274 asus_wmi_sysfs_exit(asus->platform_device);
1275}
1276
1277/*
1278 * debugfs
1279 */
1280struct asus_wmi_debugfs_node {
1281 struct asus_wmi *asus;
1282 char *name;
1283 int (*show) (struct seq_file *m, void *data);
1284};
1285
1286static int show_dsts(struct seq_file *m, void *data)
1287{
1288 struct asus_wmi *asus = m->private;
1289 int err;
1290 u32 retval = -1;
1291
1292 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
1293
1294 if (err < 0)
1295 return err;
1296
1297 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
1298
1299 return 0;
1300}
1301
1302static int show_devs(struct seq_file *m, void *data)
1303{
1304 struct asus_wmi *asus = m->private;
1305 int err;
1306 u32 retval = -1;
1307
1308 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1309 &retval);
1310
1311 if (err < 0)
1312 return err;
1313
1314 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
1315 asus->debug.ctrl_param, retval);
1316
1317 return 0;
1318}
1319
1320static int show_call(struct seq_file *m, void *data)
1321{
1322 struct asus_wmi *asus = m->private;
1323 struct bios_args args = {
1324 .arg0 = asus->debug.dev_id,
1325 .arg1 = asus->debug.ctrl_param,
1326 };
1327 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1328 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1329 union acpi_object *obj;
1330 acpi_status status;
1331
1332 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1333 1, asus->debug.method_id,
1334 &input, &output);
1335
1336 if (ACPI_FAILURE(status))
1337 return -EIO;
1338
1339 obj = (union acpi_object *)output.pointer;
1340 if (obj && obj->type == ACPI_TYPE_INTEGER)
1341 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1342 asus->debug.dev_id, asus->debug.ctrl_param,
1343 (u32) obj->integer.value);
1344 else
1345 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1346 asus->debug.dev_id, asus->debug.ctrl_param,
1347 obj ? obj->type : -1);
1348
1349 kfree(obj);
1350
1351 return 0;
1352}
1353
1354static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1355 {NULL, "devs", show_devs},
1356 {NULL, "dsts", show_dsts},
1357 {NULL, "call", show_call},
1358};
1359
1360static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
1361{
1362 struct asus_wmi_debugfs_node *node = inode->i_private;
1363
1364 return single_open(file, node->show, node->asus);
1365}
1366
1367static const struct file_operations asus_wmi_debugfs_io_ops = {
1368 .owner = THIS_MODULE,
1369 .open = asus_wmi_debugfs_open,
1370 .read = seq_read,
1371 .llseek = seq_lseek,
1372 .release = single_release,
1373};
1374
1375static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
1376{
1377 debugfs_remove_recursive(asus->debug.root);
1378}
1379
1380static int asus_wmi_debugfs_init(struct asus_wmi *asus)
1381{
1382 struct dentry *dent;
1383 int i;
1384
1385 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1386 if (!asus->debug.root) {
1387 pr_err("failed to create debugfs directory");
1388 goto error_debugfs;
1389 }
1390
1391 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1392 asus->debug.root, &asus->debug.method_id);
1393 if (!dent)
1394 goto error_debugfs;
1395
1396 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1397 asus->debug.root, &asus->debug.dev_id);
1398 if (!dent)
1399 goto error_debugfs;
1400
1401 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1402 asus->debug.root, &asus->debug.ctrl_param);
1403 if (!dent)
1404 goto error_debugfs;
1405
1406 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1407 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
1408
1409 node->asus = asus;
1410 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1411 asus->debug.root, node,
1412 &asus_wmi_debugfs_io_ops);
1413 if (!dent) {
1414 pr_err("failed to create debug file: %s\n", node->name);
1415 goto error_debugfs;
1416 }
1417 }
1418
1419 return 0;
1420
1421error_debugfs:
1422 asus_wmi_debugfs_exit(asus);
1423 return -ENOMEM;
1424}
1425
1426/*
1427 * WMI Driver
1428 */
1429static int asus_wmi_add(struct platform_device *pdev)
1430{
1431 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1432 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1433 struct asus_wmi *asus;
1434 acpi_status status;
1435 int err;
1436
1437 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
1438 if (!asus)
1439 return -ENOMEM;
1440
1441 asus->driver = wdrv;
1442 asus->platform_device = pdev;
1443 wdrv->platform_device = pdev;
1444 platform_set_drvdata(asus->platform_device, asus);
1445
1446 if (wdrv->quirks)
1447 wdrv->quirks(asus->driver);
1448
1449 err = asus_wmi_platform_init(asus);
1450 if (err)
1451 goto fail_platform;
1452
1453 err = asus_wmi_input_init(asus);
1454 if (err)
1455 goto fail_input;
1456
1457 err = asus_wmi_hwmon_init(asus);
1458 if (err)
1459 goto fail_hwmon;
1460
1461 err = asus_wmi_led_init(asus);
1462 if (err)
1463 goto fail_leds;
1464
1465 err = asus_wmi_rfkill_init(asus);
1466 if (err)
1467 goto fail_rfkill;
1468
1469 if (!acpi_video_backlight_support()) {
1470 err = asus_wmi_backlight_init(asus);
1471 if (err && err != -ENODEV)
1472 goto fail_backlight;
1473 } else
1474 pr_info("Backlight controlled by ACPI video driver\n");
1475
1476 status = wmi_install_notify_handler(asus->driver->event_guid,
1477 asus_wmi_notify, asus);
1478 if (ACPI_FAILURE(status)) {
1479 pr_err("Unable to register notify handler - %d\n", status);
1480 err = -ENODEV;
1481 goto fail_wmi_handler;
1482 }
1483
1484 err = asus_wmi_debugfs_init(asus);
1485 if (err)
1486 goto fail_debugfs;
1487
1488 return 0;
1489
1490fail_debugfs:
1491 wmi_remove_notify_handler(asus->driver->event_guid);
1492fail_wmi_handler:
1493 asus_wmi_backlight_exit(asus);
1494fail_backlight:
1495 asus_wmi_rfkill_exit(asus);
1496fail_rfkill:
1497 asus_wmi_led_exit(asus);
1498fail_leds:
1499 asus_wmi_hwmon_exit(asus);
1500fail_hwmon:
1501 asus_wmi_input_exit(asus);
1502fail_input:
1503 asus_wmi_platform_exit(asus);
1504fail_platform:
1505 kfree(asus);
1506 return err;
1507}
1508
1509static int asus_wmi_remove(struct platform_device *device)
1510{
1511 struct asus_wmi *asus;
1512
1513 asus = platform_get_drvdata(device);
1514 wmi_remove_notify_handler(asus->driver->event_guid);
1515 asus_wmi_backlight_exit(asus);
1516 asus_wmi_input_exit(asus);
1517 asus_wmi_hwmon_exit(asus);
1518 asus_wmi_led_exit(asus);
1519 asus_wmi_rfkill_exit(asus);
1520 asus_wmi_debugfs_exit(asus);
1521 asus_wmi_platform_exit(asus);
1522
1523 kfree(asus);
1524 return 0;
1525}
1526
1527/*
1528 * Platform driver - hibernate/resume callbacks
1529 */
1530static int asus_hotk_thaw(struct device *device)
1531{
1532 struct asus_wmi *asus = dev_get_drvdata(device);
1533
1534 if (asus->wlan.rfkill) {
1535 bool wlan;
1536
1537 /*
1538 * Work around bios bug - acpi _PTS turns off the wireless led
1539 * during suspend. Normally it restores it on resume, but
1540 * we should kick it ourselves in case hibernation is aborted.
1541 */
1542 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
1543 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
1544 }
1545
1546 return 0;
1547}
1548
1549static int asus_hotk_restore(struct device *device)
1550{
1551 struct asus_wmi *asus = dev_get_drvdata(device);
1552 int bl;
1553
1554 /* Refresh both wlan rfkill state and pci hotplug */
1555 if (asus->wlan.rfkill)
1556 asus_rfkill_hotplug(asus);
1557
1558 if (asus->bluetooth.rfkill) {
1559 bl = !asus_wmi_get_devstate_simple(asus,
1560 ASUS_WMI_DEVID_BLUETOOTH);
1561 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
1562 }
1563 if (asus->wimax.rfkill) {
1564 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
1565 rfkill_set_sw_state(asus->wimax.rfkill, bl);
1566 }
1567 if (asus->wwan3g.rfkill) {
1568 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
1569 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
1570 }
1571
1572 return 0;
1573}
1574
1575static const struct dev_pm_ops asus_pm_ops = {
1576 .thaw = asus_hotk_thaw,
1577 .restore = asus_hotk_restore,
1578};
1579
1580static int asus_wmi_probe(struct platform_device *pdev)
1581{
1582 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
1583 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
1584 int ret;
1585
1586 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1587 pr_warn("Management GUID not found\n");
1588 return -ENODEV;
1589 }
1590
1591 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
1592 pr_warn("Event GUID not found\n");
1593 return -ENODEV;
1594 }
1595
1596 if (wdrv->probe) {
1597 ret = wdrv->probe(pdev);
1598 if (ret)
1599 return ret;
1600 }
1601
1602 return asus_wmi_add(pdev);
1603}
1604
1605static bool used;
1606
1607int asus_wmi_register_driver(struct asus_wmi_driver *driver)
1608{
1609 struct platform_driver *platform_driver;
1610 struct platform_device *platform_device;
1611
1612 if (used)
1613 return -EBUSY;
1614
1615 platform_driver = &driver->platform_driver;
1616 platform_driver->remove = asus_wmi_remove;
1617 platform_driver->driver.owner = driver->owner;
1618 platform_driver->driver.name = driver->name;
1619 platform_driver->driver.pm = &asus_pm_ops;
1620
1621 platform_device = platform_create_bundle(platform_driver,
1622 asus_wmi_probe,
1623 NULL, 0, NULL, 0);
1624 if (IS_ERR(platform_device))
1625 return PTR_ERR(platform_device);
1626
1627 used = true;
1628 return 0;
1629}
1630EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
1631
1632void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
1633{
1634 platform_device_unregister(driver->platform_device);
1635 platform_driver_unregister(&driver->platform_driver);
1636 used = false;
1637}
1638EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
1639
1640static int __init asus_wmi_init(void)
1641{
1642 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
1643 pr_info("Asus Management GUID not found");
1644 return -ENODEV;
1645 }
1646
1647 pr_info("ASUS WMI generic driver loaded");
1648 return 0;
1649}
1650
1651static void __exit asus_wmi_exit(void)
1652{
1653 pr_info("ASUS WMI generic driver unloaded");
1654}
1655
1656module_init(asus_wmi_init);
1657module_exit(asus_wmi_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-07-30 01:19:28 -0400