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eeepc-wmi: add camera keys
[deliverable/linux.git] / drivers / platform / x86 / eeepc-wmi.c
CommitLineData
ee027e4a
YW		 1/*
2 * Eee PC WMI hotkey driver
3 *
4 * Copyright(C) 2010 Intel Corporation.
4c4edfa3 5 * Copyright(C) 2010 Corentin Chary <corentin.chary@gmail.com>
ee027e4a
YW		 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
81248889
YW		 27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
ee027e4a
YW		 29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/types.h>
a32f3926 33#include <linux/slab.h>
ee027e4a
YW		 34#include <linux/input.h>
35#include <linux/input/sparse-keymap.h>
3d7b1655
YW		 36#include <linux/fb.h>
37#include <linux/backlight.h>
084fca63 38#include <linux/leds.h>
ba48fdb9 39#include <linux/rfkill.h>
afa7c886
CC		 40#include <linux/pci.h>
41#include <linux/pci_hotplug.h>
8c1b2d83
CC		 42#include <linux/debugfs.h>
43#include <linux/seq_file.h>
45f2c693 44#include <linux/platform_device.h>
afa7c886 45#include <linux/dmi.h>
ee027e4a
YW		 46#include <acpi/acpi_bus.h>
47#include <acpi/acpi_drivers.h>
48
45f2c693
YW		 49#define EEEPC_WMI_FILE "eeepc-wmi"
50
ee027e4a
YW		 51MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>");
52MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
53MODULE_LICENSE("GPL");
54
d358cb55
CC		 55#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
56
ee027e4a 57#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
3d7b1655 58#define EEEPC_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
ee027e4a
YW		 59
60MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
3d7b1655 61MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID);
ee027e4a 62
33e0e6fe
CC		 63#define NOTIFY_BRNUP_MIN 0x11
64#define NOTIFY_BRNUP_MAX 0x1f
65#define NOTIFY_BRNDOWN_MIN 0x20
66#define NOTIFY_BRNDOWN_MAX 0x2e
ee027e4a 67
43815941 68/* WMI Methods */
33e0e6fe
CC		 69#define EEEPC_WMI_METHODID_DSTS 0x53544344
70#define EEEPC_WMI_METHODID_DEVS 0x53564544
71#define EEEPC_WMI_METHODID_CFVS 0x53564643
3d7b1655 72
43815941 73/* Wireless */
ba48fdb9
CC		 74#define EEEPC_WMI_DEVID_WLAN 0x00010011
75#define EEEPC_WMI_DEVID_BLUETOOTH 0x00010013
2e9e159d 76#define EEEPC_WMI_DEVID_WIMAX 0x00010017
ba48fdb9 77#define EEEPC_WMI_DEVID_WWAN3G 0x00010019
43815941
CC		 78
79/* Backlight and Brightness */
b7187265
CC		 80#define EEEPC_WMI_DEVID_BACKLIGHT 0x00050011
81#define EEEPC_WMI_DEVID_BRIGHTNESS 0x00050012
43815941
CC		 82
83/* Misc */
9e1565bc 84#define EEEPC_WMI_DEVID_CAMERA 0x00060013
43815941
CC		 85
86/* Storage */
9e1565bc 87#define EEEPC_WMI_DEVID_CARDREADER 0x00080013
43815941
CC		 88
89/* Input */
4615bb66 90#define EEEPC_WMI_DEVID_TOUCHPAD 0x00100011
8571d75d 91#define EEEPC_WMI_DEVID_TOUCHPAD_LED 0x00100012
3d7b1655 92
43815941 93/* DSTS masks */
aafa719d
CC		 94#define EEEPC_WMI_DSTS_STATUS_BIT 0x00000001
95#define EEEPC_WMI_DSTS_PRESENCE_BIT 0x00010000
b7187265
CC		 96#define EEEPC_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
97#define EEEPC_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
aafa719d 98
afa7c886
CC		 99static bool hotplug_wireless;
100
101module_param(hotplug_wireless, bool, 0444);
102MODULE_PARM_DESC(hotplug_wireless,
103 "Enable hotplug for wireless device. "
104 "If your laptop needs that, please report to "
105 "acpi4asus-user@lists.sourceforge.net.");
106
ee027e4a
YW		 107static const struct key_entry eeepc_wmi_keymap[] = {
108 /* Sleep already handled via generic ACPI code */
ee027e4a
YW		 109 { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } },
110 { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } },
5628e5aa
CC		 111 { KE_KEY, 0x30, { KEY_VOLUMEUP } },
112 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
113 { KE_KEY, 0x32, { KEY_MUTE } },
77ca5b01 114 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
5628e5aa 115 { KE_KEY, 0x5d, { KEY_WLAN } },
eda17484 116 { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */
e2d3d44b
CC		 117 { KE_KEY, 0x82, { KEY_CAMERA } },
118 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
bc40cce2 119 { KE_KEY, 0x88, { KEY_WLAN } },
5628e5aa 120 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
77ca5b01
CC		 121 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
122 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
54c799a5 123 { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
e2d3d44b
CC		 124 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
125 { KE_KEY, 0xec, { KEY_CAMERA_UP } },
126 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
127 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
128 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
ee027e4a
YW		 129 { KE_END, 0},
130};
131
3d7b1655
YW		 132struct bios_args {
133 u32 dev_id;
134 u32 ctrl_param;
135};
136
8c1b2d83
CC		 137/*
138 * eeepc-wmi/ - debugfs root directory
139 * dev_id - current dev_id
140 * ctrl_param - current ctrl_param
141 * devs - call DEVS(dev_id, ctrl_param) and print result
142 * dsts - call DSTS(dev_id) and print result
143 */
144struct eeepc_wmi_debug {
145 struct dentry *root;
146 u32 dev_id;
147 u32 ctrl_param;
148};
149
81248889 150struct eeepc_wmi {
afa7c886
CC		 151 bool hotplug_wireless;
152
81248889 153 struct input_dev *inputdev;
3d7b1655 154 struct backlight_device *backlight_device;
27c136c8 155 struct platform_device *platform_device;
084fca63
CC		 156
157 struct led_classdev tpd_led;
158 int tpd_led_wk;
159 struct workqueue_struct *led_workqueue;
160 struct work_struct tpd_led_work;
ba48fdb9
CC		 161
162 struct rfkill *wlan_rfkill;
163 struct rfkill *bluetooth_rfkill;
2e9e159d 164 struct rfkill *wimax_rfkill;
ba48fdb9 165 struct rfkill *wwan3g_rfkill;
8c1b2d83 166
afa7c886
CC		 167 struct hotplug_slot *hotplug_slot;
168 struct mutex hotplug_lock;
279f8f95
CC		 169 struct mutex wmi_lock;
170 struct workqueue_struct *hotplug_workqueue;
171 struct work_struct hotplug_work;
afa7c886 172
8c1b2d83 173 struct eeepc_wmi_debug debug;
81248889
YW		 174};
175
81248889 176static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc)
ee027e4a
YW		 177{
178 int err;
179
81248889
YW		 180 eeepc->inputdev = input_allocate_device();
181 if (!eeepc->inputdev)
ee027e4a
YW		 182 return -ENOMEM;
183
81248889 184 eeepc->inputdev->name = "Eee PC WMI hotkeys";
45f2c693 185 eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0";
81248889 186 eeepc->inputdev->id.bustype = BUS_HOST;
27c136c8 187 eeepc->inputdev->dev.parent = &eeepc->platform_device->dev;
ee027e4a 188
81248889 189 err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL);
ee027e4a
YW		 190 if (err)
191 goto err_free_dev;
192
81248889 193 err = input_register_device(eeepc->inputdev);
ee027e4a
YW		 194 if (err)
195 goto err_free_keymap;
196
197 return 0;
198
199err_free_keymap:
81248889 200 sparse_keymap_free(eeepc->inputdev);
ee027e4a 201err_free_dev:
81248889 202 input_free_device(eeepc->inputdev);
ee027e4a
YW		 203 return err;
204}
205
81248889
YW		 206static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc)
207{
208 if (eeepc->inputdev) {
209 sparse_keymap_free(eeepc->inputdev);
210 input_unregister_device(eeepc->inputdev);
211 }
212
213 eeepc->inputdev = NULL;
214}
215
2a3f0064 216static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *retval)
3d7b1655
YW		 217{
218 struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id };
219 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
220 union acpi_object *obj;
221 acpi_status status;
222 u32 tmp;
223
224 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
afa7c886
CC		 225 1, EEEPC_WMI_METHODID_DSTS,
226 &input, &output);
3d7b1655
YW		 227
228 if (ACPI_FAILURE(status))
229 return status;
230
231 obj = (union acpi_object *)output.pointer;
232 if (obj && obj->type == ACPI_TYPE_INTEGER)
233 tmp = (u32)obj->integer.value;
234 else
235 tmp = 0;
236
2a3f0064
CC		 237 if (retval)
238 *retval = tmp;
3d7b1655
YW		 239
240 kfree(obj);
241
242 return status;
243
244}
245
8c1b2d83
CC		 246static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
247 u32 *retval)
3d7b1655
YW		 248{
249 struct bios_args args = {
250 .dev_id = dev_id,
251 .ctrl_param = ctrl_param,
252 };
253 struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
254 acpi_status status;
255
8c1b2d83
CC		 256 if (!retval) {
257 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
258 EEEPC_WMI_METHODID_DEVS,
259 &input, NULL);
260 } else {
261 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
262 union acpi_object *obj;
263 u32 tmp;
264
265 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1,
266 EEEPC_WMI_METHODID_DEVS,
267 &input, &output);
268
269 if (ACPI_FAILURE(status))
270 return status;
271
272 obj = (union acpi_object *)output.pointer;
273 if (obj && obj->type == ACPI_TYPE_INTEGER)
274 tmp = (u32)obj->integer.value;
275 else
276 tmp = 0;
277
278 *retval = tmp;
279
280 kfree(obj);
281 }
3d7b1655
YW		 282
283 return status;
284}
285
5c95638d 286/* Helper for special devices with magic return codes */
b7187265 287static int eeepc_wmi_get_devstate_bits(u32 dev_id, u32 mask)
5c95638d
CC		 288{
289 u32 retval = 0;
290 acpi_status status;
291
292 status = eeepc_wmi_get_devstate(dev_id, &retval);
293
294 if (ACPI_FAILURE(status))
295 return -EINVAL;
296
aafa719d 297 if (!(retval & EEEPC_WMI_DSTS_PRESENCE_BIT))
5c95638d
CC		 298 return -ENODEV;
299
b7187265
CC		 300 return retval & mask;
301}
302
303static int eeepc_wmi_get_devstate_simple(u32 dev_id)
304{
305 return eeepc_wmi_get_devstate_bits(dev_id, EEEPC_WMI_DSTS_STATUS_BIT);
5c95638d
CC		 306}
307
084fca63
CC		 308/*
309 * LEDs
310 */
311/*
312 * These functions actually update the LED's, and are called from a
313 * workqueue. By doing this as separate work rather than when the LED
314 * subsystem asks, we avoid messing with the Eeepc ACPI stuff during a
315 * potentially bad time, such as a timer interrupt.
316 */
317static void tpd_led_update(struct work_struct *work)
318{
319 int ctrl_param;
320 struct eeepc_wmi *eeepc;
321
322 eeepc = container_of(work, struct eeepc_wmi, tpd_led_work);
323
324 ctrl_param = eeepc->tpd_led_wk;
8571d75d 325 eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
084fca63
CC		 326}
327
328static void tpd_led_set(struct led_classdev *led_cdev,
329 enum led_brightness value)
330{
331 struct eeepc_wmi *eeepc;
332
333 eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led);
334
335 eeepc->tpd_led_wk = !!value;
336 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
337}
338
8571d75d 339static int read_tpd_led_state(struct eeepc_wmi *eeepc)
084fca63 340{
8571d75d 341 return eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_TOUCHPAD_LED);
084fca63
CC		 342}
343
344static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
345{
346 struct eeepc_wmi *eeepc;
347
348 eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led);
349
8571d75d 350 return read_tpd_led_state(eeepc);
084fca63
CC		 351}
352
353static int eeepc_wmi_led_init(struct eeepc_wmi *eeepc)
354{
355 int rv;
356
8571d75d 357 if (read_tpd_led_state(eeepc) < 0)
084fca63
CC		 358 return 0;
359
360 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
361 if (!eeepc->led_workqueue)
362 return -ENOMEM;
363 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
364
365 eeepc->tpd_led.name = "eeepc::touchpad";
366 eeepc->tpd_led.brightness_set = tpd_led_set;
367 eeepc->tpd_led.brightness_get = tpd_led_get;
368 eeepc->tpd_led.max_brightness = 1;
369
370 rv = led_classdev_register(&eeepc->platform_device->dev,
371 &eeepc->tpd_led);
372 if (rv) {
373 destroy_workqueue(eeepc->led_workqueue);
374 return rv;
375 }
376
377 return 0;
378}
379
380static void eeepc_wmi_led_exit(struct eeepc_wmi *eeepc)
381{
382 if (eeepc->tpd_led.dev)
383 led_classdev_unregister(&eeepc->tpd_led);
384 if (eeepc->led_workqueue)
385 destroy_workqueue(eeepc->led_workqueue);
386}
387
afa7c886
CC		 388/*
389 * PCI hotplug (for wlan rfkill)
390 */
391static bool eeepc_wlan_rfkill_blocked(struct eeepc_wmi *eeepc)
392{
5c95638d 393 int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN);
afa7c886 394
5c95638d 395 if (result < 0)
afa7c886 396 return false;
5c95638d 397 return !result;
afa7c886
CC		 398}
399
400static void eeepc_rfkill_hotplug(struct eeepc_wmi *eeepc)
401{
402 struct pci_dev *dev;
403 struct pci_bus *bus;
279f8f95 404 bool blocked;
afa7c886
CC		 405 bool absent;
406 u32 l;
407
279f8f95
CC		 408 mutex_lock(&eeepc->wmi_lock);
409 blocked = eeepc_wlan_rfkill_blocked(eeepc);
410 mutex_unlock(&eeepc->wmi_lock);
afa7c886
CC		 411
412 mutex_lock(&eeepc->hotplug_lock);
413
279f8f95
CC		 414 if (eeepc->wlan_rfkill)
415 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
416
afa7c886
CC		 417 if (eeepc->hotplug_slot) {
418 bus = pci_find_bus(0, 1);
419 if (!bus) {
420 pr_warning("Unable to find PCI bus 1?\n");
421 goto out_unlock;
422 }
423
424 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
425 pr_err("Unable to read PCI config space?\n");
426 goto out_unlock;
427 }
428 absent = (l == 0xffffffff);
429
430 if (blocked != absent) {
431 pr_warning("BIOS says wireless lan is %s, "
432 "but the pci device is %s\n",
433 blocked ? "blocked" : "unblocked",
434 absent ? "absent" : "present");
435 pr_warning("skipped wireless hotplug as probably "
436 "inappropriate for this model\n");
437 goto out_unlock;
438 }
439
440 if (!blocked) {
441 dev = pci_get_slot(bus, 0);
442 if (dev) {
443 /* Device already present */
444 pci_dev_put(dev);
445 goto out_unlock;
446 }
447 dev = pci_scan_single_device(bus, 0);
448 if (dev) {
449 pci_bus_assign_resources(bus);
450 if (pci_bus_add_device(dev))
451 pr_err("Unable to hotplug wifi\n");
452 }
453 } else {
454 dev = pci_get_slot(bus, 0);
455 if (dev) {
456 pci_remove_bus_device(dev);
457 pci_dev_put(dev);
458 }
459 }
460 }
461
462out_unlock:
463 mutex_unlock(&eeepc->hotplug_lock);
464}
465
466static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
467{
468 struct eeepc_wmi *eeepc = data;
469
470 if (event != ACPI_NOTIFY_BUS_CHECK)
471 return;
472
279f8f95
CC		 473 /*
474 * We can't call directly eeepc_rfkill_hotplug because most
475 * of the time WMBC is still being executed and not reetrant.
476 * There is currently no way to tell ACPICA that we want this
477 * method to be serialized, we schedule a eeepc_rfkill_hotplug
478 * call later, in a safer context.
479 */
480 queue_work(eeepc->hotplug_workqueue, &eeepc->hotplug_work);
afa7c886
CC		 481}
482
483static int eeepc_register_rfkill_notifier(struct eeepc_wmi *eeepc,
484 char *node)
485{
486 acpi_status status;
487 acpi_handle handle;
488
489 status = acpi_get_handle(NULL, node, &handle);
490
491 if (ACPI_SUCCESS(status)) {
492 status = acpi_install_notify_handler(handle,
493 ACPI_SYSTEM_NOTIFY,
494 eeepc_rfkill_notify,
495 eeepc);
496 if (ACPI_FAILURE(status))
497 pr_warning("Failed to register notify on %s\n", node);
498 } else
499 return -ENODEV;
500
501 return 0;
502}
503
504static void eeepc_unregister_rfkill_notifier(struct eeepc_wmi *eeepc,
505 char *node)
506{
507 acpi_status status = AE_OK;
508 acpi_handle handle;
509
510 status = acpi_get_handle(NULL, node, &handle);
511
512 if (ACPI_SUCCESS(status)) {
513 status = acpi_remove_notify_handler(handle,
514 ACPI_SYSTEM_NOTIFY,
515 eeepc_rfkill_notify);
516 if (ACPI_FAILURE(status))
517 pr_err("Error removing rfkill notify handler %s\n",
518 node);
519 }
520}
521
522static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
523 u8 *value)
524{
5c95638d 525 int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN);
afa7c886 526
5c95638d
CC		 527 if (result < 0)
528 return result;
afa7c886 529
5c95638d 530 *value = !!result;
afa7c886
CC		 531 return 0;
532}
533
534static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
535{
536 kfree(hotplug_slot->info);
537 kfree(hotplug_slot);
538}
539
540static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
541 .owner = THIS_MODULE,
542 .get_adapter_status = eeepc_get_adapter_status,
543 .get_power_status = eeepc_get_adapter_status,
544};
545
279f8f95
CC		 546static void eeepc_hotplug_work(struct work_struct *work)
547{
548 struct eeepc_wmi *eeepc;
549
550 eeepc = container_of(work, struct eeepc_wmi, hotplug_work);
551 eeepc_rfkill_hotplug(eeepc);
552}
553
afa7c886
CC		 554static int eeepc_setup_pci_hotplug(struct eeepc_wmi *eeepc)
555{
556 int ret = -ENOMEM;
557 struct pci_bus *bus = pci_find_bus(0, 1);
558
559 if (!bus) {
560 pr_err("Unable to find wifi PCI bus\n");
561 return -ENODEV;
562 }
563
279f8f95
CC		 564 eeepc->hotplug_workqueue =
565 create_singlethread_workqueue("hotplug_workqueue");
566 if (!eeepc->hotplug_workqueue)
567 goto error_workqueue;
568
569 INIT_WORK(&eeepc->hotplug_work, eeepc_hotplug_work);
570
afa7c886
CC		 571 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
572 if (!eeepc->hotplug_slot)
573 goto error_slot;
574
575 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
576 GFP_KERNEL);
577 if (!eeepc->hotplug_slot->info)
578 goto error_info;
579
580 eeepc->hotplug_slot->private = eeepc;
581 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
582 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
583 eeepc_get_adapter_status(eeepc->hotplug_slot,
584 &eeepc->hotplug_slot->info->adapter_status);
585
586 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
587 if (ret) {
588 pr_err("Unable to register hotplug slot - %d\n", ret);
589 goto error_register;
590 }
591
592 return 0;
593
594error_register:
595 kfree(eeepc->hotplug_slot->info);
596error_info:
597 kfree(eeepc->hotplug_slot);
598 eeepc->hotplug_slot = NULL;
599error_slot:
279f8f95
CC		 600 destroy_workqueue(eeepc->hotplug_workqueue);
601error_workqueue:
afa7c886
CC		 602 return ret;
603}
604
ba48fdb9
CC		 605/*
606 * Rfkill devices
607 */
608static int eeepc_rfkill_set(void *data, bool blocked)
609{
610 int dev_id = (unsigned long)data;
611 u32 ctrl_param = !blocked;
7898cf1a
CC		 612 acpi_status status;
613
614 status = eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL);
615
616 if (ACPI_FAILURE(status))
617 return -EIO;
ba48fdb9 618
7898cf1a 619 return 0;
ba48fdb9
CC		 620}
621
622static void eeepc_rfkill_query(struct rfkill *rfkill, void *data)
623{
624 int dev_id = (unsigned long)data;
5c95638d 625 int result;
ba48fdb9 626
5c95638d 627 result = eeepc_wmi_get_devstate_simple(dev_id);
ba48fdb9 628
5c95638d 629 if (result < 0)
ba48fdb9
CC		 630 return ;
631
5c95638d 632 rfkill_set_sw_state(rfkill, !result);
ba48fdb9
CC		 633}
634
279f8f95
CC		 635static int eeepc_rfkill_wlan_set(void *data, bool blocked)
636{
637 struct eeepc_wmi *eeepc = data;
638 int ret;
639
640 /*
641 * This handler is enabled only if hotplug is enabled.
642 * In this case, the eeepc_wmi_set_devstate() will
643 * trigger a wmi notification and we need to wait
644 * this call to finish before being able to call
645 * any wmi method
646 */
647 mutex_lock(&eeepc->wmi_lock);
648 ret = eeepc_rfkill_set((void *)(long)EEEPC_WMI_DEVID_WLAN, blocked);
649 mutex_unlock(&eeepc->wmi_lock);
650 return ret;
651}
652
653static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data)
654{
655 eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN);
656}
657
658static const struct rfkill_ops eeepc_rfkill_wlan_ops = {
659 .set_block = eeepc_rfkill_wlan_set,
660 .query = eeepc_rfkill_wlan_query,
661};
662
ba48fdb9
CC		 663static const struct rfkill_ops eeepc_rfkill_ops = {
664 .set_block = eeepc_rfkill_set,
665 .query = eeepc_rfkill_query,
666};
667
668static int eeepc_new_rfkill(struct eeepc_wmi *eeepc,
669 struct rfkill **rfkill,
670 const char *name,
671 enum rfkill_type type, int dev_id)
672{
5c95638d 673 int result = eeepc_wmi_get_devstate_simple(dev_id);
ba48fdb9 674
5c95638d
CC		 675 if (result < 0)
676 return result;
ba48fdb9 677
279f8f95
CC		 678 if (dev_id == EEEPC_WMI_DEVID_WLAN && eeepc->hotplug_wireless)
679 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
680 &eeepc_rfkill_wlan_ops, eeepc);
681 else
682 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
683 &eeepc_rfkill_ops, (void *)(long)dev_id);
ba48fdb9
CC		 684
685 if (!*rfkill)
686 return -EINVAL;
687
5c95638d 688 rfkill_init_sw_state(*rfkill, !result);
ba48fdb9
CC		 689 result = rfkill_register(*rfkill);
690 if (result) {
691 rfkill_destroy(*rfkill);
692 *rfkill = NULL;
693 return result;
694 }
695 return 0;
696}
697
698static void eeepc_wmi_rfkill_exit(struct eeepc_wmi *eeepc)
699{
afa7c886
CC		 700 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
701 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
702 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
ba48fdb9
CC		 703 if (eeepc->wlan_rfkill) {
704 rfkill_unregister(eeepc->wlan_rfkill);
705 rfkill_destroy(eeepc->wlan_rfkill);
706 eeepc->wlan_rfkill = NULL;
707 }
afa7c886
CC		 708 /*
709 * Refresh pci hotplug in case the rfkill state was changed after
710 * eeepc_unregister_rfkill_notifier()
711 */
712 eeepc_rfkill_hotplug(eeepc);
713 if (eeepc->hotplug_slot)
714 pci_hp_deregister(eeepc->hotplug_slot);
279f8f95
CC		 715 if (eeepc->hotplug_workqueue)
716 destroy_workqueue(eeepc->hotplug_workqueue);
afa7c886 717
ba48fdb9
CC		 718 if (eeepc->bluetooth_rfkill) {
719 rfkill_unregister(eeepc->bluetooth_rfkill);
720 rfkill_destroy(eeepc->bluetooth_rfkill);
721 eeepc->bluetooth_rfkill = NULL;
722 }
2e9e159d
CC		 723 if (eeepc->wimax_rfkill) {
724 rfkill_unregister(eeepc->wimax_rfkill);
725 rfkill_destroy(eeepc->wimax_rfkill);
726 eeepc->wimax_rfkill = NULL;
727 }
ba48fdb9
CC		 728 if (eeepc->wwan3g_rfkill) {
729 rfkill_unregister(eeepc->wwan3g_rfkill);
730 rfkill_destroy(eeepc->wwan3g_rfkill);
731 eeepc->wwan3g_rfkill = NULL;
732 }
733}
734
735static int eeepc_wmi_rfkill_init(struct eeepc_wmi *eeepc)
736{
737 int result = 0;
738
afa7c886 739 mutex_init(&eeepc->hotplug_lock);
279f8f95 740 mutex_init(&eeepc->wmi_lock);
afa7c886 741
ba48fdb9
CC		 742 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
743 "eeepc-wlan", RFKILL_TYPE_WLAN,
744 EEEPC_WMI_DEVID_WLAN);
745
746 if (result && result != -ENODEV)
747 goto exit;
748
749 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
750 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
751 EEEPC_WMI_DEVID_BLUETOOTH);
752
753 if (result && result != -ENODEV)
754 goto exit;
755
2e9e159d
CC		 756 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
757 "eeepc-wimax", RFKILL_TYPE_WIMAX,
758 EEEPC_WMI_DEVID_WIMAX);
759
760 if (result && result != -ENODEV)
761 goto exit;
762
ba48fdb9
CC		 763 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
764 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
765 EEEPC_WMI_DEVID_WWAN3G);
766
767 if (result && result != -ENODEV)
768 goto exit;
769
c14d4b8e
CC		 770 if (!eeepc->hotplug_wireless)
771 goto exit;
772
afa7c886
CC		 773 result = eeepc_setup_pci_hotplug(eeepc);
774 /*
775 * If we get -EBUSY then something else is handling the PCI hotplug -
776 * don't fail in this case
777 */
778 if (result == -EBUSY)
779 result = 0;
780
781 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
782 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
783 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
784 /*
785 * Refresh pci hotplug in case the rfkill state was changed during
786 * setup.
787 */
788 eeepc_rfkill_hotplug(eeepc);
789
ba48fdb9
CC		 790exit:
791 if (result && result != -ENODEV)
792 eeepc_wmi_rfkill_exit(eeepc);
793
794 if (result == -ENODEV)
795 result = 0;
796
797 return result;
798}
799
084fca63
CC		 800/*
801 * Backlight
802 */
b7187265
CC		 803static int read_backlight_power(void)
804{
805 int ret = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BACKLIGHT);
806
807 if (ret < 0)
808 return ret;
809
810 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
811}
812
3d7b1655
YW		 813static int read_brightness(struct backlight_device *bd)
814{
dfed65d5 815 u32 retval;
3d7b1655
YW		 816 acpi_status status;
817
b7187265 818 status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, &retval);
3d7b1655
YW		 819
820 if (ACPI_FAILURE(status))
b7187265 821 return -EIO;
3d7b1655 822 else
b7187265 823 return retval & EEEPC_WMI_DSTS_BRIGHTNESS_MASK;
3d7b1655
YW		 824}
825
826static int update_bl_status(struct backlight_device *bd)
827{
dfed65d5 828 u32 ctrl_param;
3d7b1655 829 acpi_status status;
b7187265 830 int power;
3d7b1655
YW		 831
832 ctrl_param = bd->props.brightness;
833
b7187265 834 status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BRIGHTNESS,
8c1b2d83 835 ctrl_param, NULL);
3d7b1655
YW		 836
837 if (ACPI_FAILURE(status))
b7187265
CC		 838 return -EIO;
839
840 power = read_backlight_power();
841 if (power != -ENODEV && bd->props.power != power) {
842 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
843 status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT,
844 ctrl_param, NULL);
845
846 if (ACPI_FAILURE(status))
847 return -EIO;
848 }
849 return 0;
3d7b1655
YW		 850}
851
852static const struct backlight_ops eeepc_wmi_bl_ops = {
853 .get_brightness = read_brightness,
854 .update_status = update_bl_status,
855};
856
857static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code)
858{
859 struct backlight_device *bd = eeepc->backlight_device;
860 int old = bd->props.brightness;
b7670ed6 861 int new = old;
3d7b1655
YW		 862
863 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
864 new = code - NOTIFY_BRNUP_MIN + 1;
865 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
866 new = code - NOTIFY_BRNDOWN_MIN;
867
868 bd->props.brightness = new;
869 backlight_update_status(bd);
870 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
871
872 return old;
873}
874
875static int eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc)
876{
877 struct backlight_device *bd;
878 struct backlight_properties props;
b7187265
CC		 879 int max;
880 int power;
881
882 max = eeepc_wmi_get_devstate_bits(EEEPC_WMI_DEVID_BRIGHTNESS,
883 EEEPC_WMI_DSTS_MAX_BRIGTH_MASK);
884 power = read_backlight_power();
885
886 if (max < 0 && power < 0) {
887 /* Try to keep the original error */
888 if (max == -ENODEV && power == -ENODEV)
889 return -ENODEV;
890 if (max != -ENODEV)
891 return max;
892 else
893 return power;
894 }
895 if (max == -ENODEV)
896 max = 0;
897 if (power == -ENODEV)
898 power = FB_BLANK_UNBLANK;
3d7b1655
YW		 899
900 memset(&props, 0, sizeof(struct backlight_properties));
b7187265 901 props.max_brightness = max;
3d7b1655 902 bd = backlight_device_register(EEEPC_WMI_FILE,
27c136c8 903 &eeepc->platform_device->dev, eeepc,
3d7b1655
YW		 904 &eeepc_wmi_bl_ops, &props);
905 if (IS_ERR(bd)) {
906 pr_err("Could not register backlight device\n");
907 return PTR_ERR(bd);
908 }
909
910 eeepc->backlight_device = bd;
911
912 bd->props.brightness = read_brightness(bd);
b7187265 913 bd->props.power = power;
3d7b1655
YW		 914 backlight_update_status(bd);
915
916 return 0;
917}
918
919static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc)
920{
921 if (eeepc->backlight_device)
922 backlight_device_unregister(eeepc->backlight_device);
923
924 eeepc->backlight_device = NULL;
925}
926
927static void eeepc_wmi_notify(u32 value, void *context)
928{
929 struct eeepc_wmi *eeepc = context;
930 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
931 union acpi_object *obj;
932 acpi_status status;
933 int code;
934 int orig_code;
935
936 status = wmi_get_event_data(value, &response);
937 if (status != AE_OK) {
938 pr_err("bad event status 0x%x\n", status);
939 return;
940 }
941
942 obj = (union acpi_object *)response.pointer;
943
944 if (obj && obj->type == ACPI_TYPE_INTEGER) {
945 code = obj->integer.value;
946 orig_code = code;
947
948 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
949 code = NOTIFY_BRNUP_MIN;
950 else if (code >= NOTIFY_BRNDOWN_MIN &&
951 code <= NOTIFY_BRNDOWN_MAX)
952 code = NOTIFY_BRNDOWN_MIN;
953
954 if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) {
955 if (!acpi_video_backlight_support())
956 eeepc_wmi_backlight_notify(eeepc, orig_code);
957 }
958
959 if (!sparse_keymap_report_event(eeepc->inputdev,
960 code, 1, true))
961 pr_info("Unknown key %x pressed\n", code);
962 }
963
964 kfree(obj);
965}
966
9e1565bc
CC		 967/*
968 * Sys helpers
969 */
970static int parse_arg(const char *buf, unsigned long count, int *val)
971{
972 if (!count)
973 return 0;
974 if (sscanf(buf, "%i", val) != 1)
975 return -EINVAL;
976 return count;
977}
978
979static ssize_t store_sys_wmi(int devid, const char *buf, size_t count)
980{
981 acpi_status status;
982 u32 retval;
983 int rv, value;
984
985 value = eeepc_wmi_get_devstate_simple(devid);
986 if (value == -ENODEV) /* Check device presence */
987 return value;
988
989 rv = parse_arg(buf, count, &value);
990 status = eeepc_wmi_set_devstate(devid, value, &retval);
991
992 if (ACPI_FAILURE(status))
993 return -EIO;
994 return rv;
995}
996
997static ssize_t show_sys_wmi(int devid, char *buf)
998{
999 int value = eeepc_wmi_get_devstate_simple(devid);
1000
1001 if (value < 0)
1002 return value;
1003
1004 return sprintf(buf, "%d\n", value);
1005}
1006
1007#define EEEPC_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
1008 static ssize_t show_##_name(struct device *dev, \
1009 struct device_attribute *attr, \
1010 char *buf) \
1011 { \
1012 return show_sys_wmi(_cm, buf); \
1013 } \
1014 static ssize_t store_##_name(struct device *dev, \
1015 struct device_attribute *attr, \
1016 const char *buf, size_t count) \
1017 { \
1018 return store_sys_wmi(_cm, buf, count); \
1019 } \
1020 static struct device_attribute dev_attr_##_name = { \
1021 .attr = { \
1022 .name = __stringify(_name), \
1023 .mode = _mode }, \
1024 .show = show_##_name, \
1025 .store = store_##_name, \
1026 }
1027
4615bb66 1028EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD);
9e1565bc
CC		 1029EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA);
1030EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER);
1031
67fa38ec
DT		 1032static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1033 const char *buf, size_t count)
7f80d734
CB		 1034{
1035 int value;
1036 struct acpi_buffer input = { (acpi_size)sizeof(value), &value };
1037 acpi_status status;
1038
1039 if (!count || sscanf(buf, "%i", &value) != 1)
1040 return -EINVAL;
1041 if (value < 0 || value > 2)
1042 return -EINVAL;
1043
1044 status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID,
1045 1, EEEPC_WMI_METHODID_CFVS, &input, NULL);
1046
1047 if (ACPI_FAILURE(status))
1048 return -EIO;
1049 else
1050 return count;
1051}
1052
1053static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1054
4e37b42d
CC		 1055static struct attribute *platform_attributes[] = {
1056 &dev_attr_cpufv.attr,
9e1565bc
CC		 1057 &dev_attr_camera.attr,
1058 &dev_attr_cardr.attr,
4615bb66 1059 &dev_attr_touchpad.attr,
4e37b42d
CC		 1060 NULL
1061};
1062
9e1565bc
CC		 1063static mode_t eeepc_sysfs_is_visible(struct kobject *kobj,
1064 struct attribute *attr,
1065 int idx)
1066{
1067 bool supported = true;
1068 int devid = -1;
1069
1070 if (attr == &dev_attr_camera.attr)
1071 devid = EEEPC_WMI_DEVID_CAMERA;
1072 else if (attr == &dev_attr_cardr.attr)
1073 devid = EEEPC_WMI_DEVID_CARDREADER;
4615bb66
CC		 1074 else if (attr == &dev_attr_touchpad.attr)
1075 devid = EEEPC_WMI_DEVID_TOUCHPAD;
9e1565bc
CC		 1076
1077 if (devid != -1)
1078 supported = eeepc_wmi_get_devstate_simple(devid) != -ENODEV;
1079
1080 return supported ? attr->mode : 0;
1081}
1082
4e37b42d 1083static struct attribute_group platform_attribute_group = {
9e1565bc
CC		 1084 .is_visible = eeepc_sysfs_is_visible,
1085 .attrs = platform_attributes
4e37b42d
CC		 1086};
1087
7f80d734
CB		 1088static void eeepc_wmi_sysfs_exit(struct platform_device *device)
1089{
4e37b42d 1090 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
7f80d734
CB		 1091}
1092
1093static int eeepc_wmi_sysfs_init(struct platform_device *device)
1094{
4e37b42d 1095 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
7f80d734
CB		 1096}
1097
27c136c8
CC		 1098/*
1099 * Platform device
1100 */
1101static int __init eeepc_wmi_platform_init(struct eeepc_wmi *eeepc)
ee027e4a 1102{
a04ce290 1103 return eeepc_wmi_sysfs_init(eeepc->platform_device);
27c136c8
CC		 1104}
1105
1106static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc)
1107{
1108 eeepc_wmi_sysfs_exit(eeepc->platform_device);
27c136c8
CC		 1109}
1110
8c1b2d83
CC		 1111/*
1112 * debugfs
1113 */
1114struct eeepc_wmi_debugfs_node {
1115 struct eeepc_wmi *eeepc;
1116 char *name;
1117 int (*show)(struct seq_file *m, void *data);
1118};
1119
1120static int show_dsts(struct seq_file *m, void *data)
1121{
1122 struct eeepc_wmi *eeepc = m->private;
1123 acpi_status status;
1124 u32 retval = -1;
1125
1126 status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval);
1127
1128 if (ACPI_FAILURE(status))
1129 return -EIO;
1130
1131 seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval);
1132
1133 return 0;
1134}
1135
1136static int show_devs(struct seq_file *m, void *data)
1137{
1138 struct eeepc_wmi *eeepc = m->private;
1139 acpi_status status;
1140 u32 retval = -1;
1141
1142 status = eeepc_wmi_set_devstate(eeepc->debug.dev_id,
1143 eeepc->debug.ctrl_param, &retval);
1144 if (ACPI_FAILURE(status))
1145 return -EIO;
1146
1147 seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id,
1148 eeepc->debug.ctrl_param, retval);
1149
1150 return 0;
1151}
1152
1153static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = {
1154 { NULL, "devs", show_devs },
1155 { NULL, "dsts", show_dsts },
1156};
1157
1158static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file)
1159{
1160 struct eeepc_wmi_debugfs_node *node = inode->i_private;
1161
1162 return single_open(file, node->show, node->eeepc);
1163}
1164
1165static const struct file_operations eeepc_wmi_debugfs_io_ops = {
1166 .owner = THIS_MODULE,
1167 .open = eeepc_wmi_debugfs_open,
1168 .read = seq_read,
1169 .llseek = seq_lseek,
1170 .release = single_release,
1171};
1172
1173static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc)
1174{
1175 debugfs_remove_recursive(eeepc->debug.root);
1176}
1177
1178static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc)
1179{
1180 struct dentry *dent;
1181 int i;
1182
1183 eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL);
1184 if (!eeepc->debug.root) {
1185 pr_err("failed to create debugfs directory");
1186 goto error_debugfs;
1187 }
1188
1189 dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR,
1190 eeepc->debug.root, &eeepc->debug.dev_id);
1191 if (!dent)
1192 goto error_debugfs;
1193
1194 dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR,
1195 eeepc->debug.root, &eeepc->debug.ctrl_param);
1196 if (!dent)
1197 goto error_debugfs;
1198
1199 for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) {
1200 struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i];
1201
1202 node->eeepc = eeepc;
1203 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
1204 eeepc->debug.root, node,
1205 &eeepc_wmi_debugfs_io_ops);
1206 if (!dent) {
1207 pr_err("failed to create debug file: %s\n", node->name);
1208 goto error_debugfs;
1209 }
1210 }
1211
1212 return 0;
1213
1214error_debugfs:
1215 eeepc_wmi_debugfs_exit(eeepc);
1216 return -ENOMEM;
1217}
1218
27c136c8
CC		 1219/*
1220 * WMI Driver
1221 */
afa7c886
CC		 1222static void eeepc_dmi_check(struct eeepc_wmi *eeepc)
1223{
1224 const char *model;
1225
1226 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1227 if (!model)
1228 return;
1229
1230 /*
1231 * Whitelist for wlan hotplug
1232 *
1233 * Eeepc 1000H needs the current hotplug code to handle
1234 * Fn+F2 correctly. We may add other Eeepc here later, but
1235 * it seems that most of the laptops supported by eeepc-wmi
1236 * don't need to be on this list
1237 */
1238 if (strcmp(model, "1000H") == 0) {
1239 eeepc->hotplug_wireless = true;
1240 pr_info("wlan hotplug enabled\n");
1241 }
1242}
1243
a04ce290 1244static int __init eeepc_wmi_add(struct platform_device *pdev)
27c136c8
CC		 1245{
1246 struct eeepc_wmi *eeepc;
ee027e4a 1247 acpi_status status;
27c136c8 1248 int err;
ee027e4a 1249
27c136c8
CC		 1250 eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL);
1251 if (!eeepc)
a04ce290
CC		 1252 return -ENOMEM;
1253
1254 eeepc->platform_device = pdev;
1255 platform_set_drvdata(eeepc->platform_device, eeepc);
27c136c8 1256
afa7c886
CC		 1257 eeepc->hotplug_wireless = hotplug_wireless;
1258 eeepc_dmi_check(eeepc);
1259
27c136c8
CC		 1260 err = eeepc_wmi_platform_init(eeepc);
1261 if (err)
1262 goto fail_platform;
45f2c693
YW		 1263
1264 err = eeepc_wmi_input_init(eeepc);
1265 if (err)
27c136c8 1266 goto fail_input;
3d7b1655 1267
084fca63
CC		 1268 err = eeepc_wmi_led_init(eeepc);
1269 if (err)
1270 goto fail_leds;
1271
ba48fdb9
CC		 1272 err = eeepc_wmi_rfkill_init(eeepc);
1273 if (err)
1274 goto fail_rfkill;
1275
3d7b1655
YW		 1276 if (!acpi_video_backlight_support()) {
1277 err = eeepc_wmi_backlight_init(eeepc);
b7187265 1278 if (err && err != -ENODEV)
27c136c8 1279 goto fail_backlight;
3d7b1655
YW		 1280 } else
1281 pr_info("Backlight controlled by ACPI video driver\n");
45f2c693
YW		 1282
1283 status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID,
27c136c8 1284 eeepc_wmi_notify, eeepc);
45f2c693
YW		 1285 if (ACPI_FAILURE(status)) {
1286 pr_err("Unable to register notify handler - %d\n",
1287 status);
1288 err = -ENODEV;
27c136c8 1289 goto fail_wmi_handler;
45f2c693
YW		 1290 }
1291
8c1b2d83
CC		 1292 err = eeepc_wmi_debugfs_init(eeepc);
1293 if (err)
1294 goto fail_debugfs;
1295
a04ce290 1296 return 0;
45f2c693 1297
8c1b2d83
CC		 1298fail_debugfs:
1299 wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
27c136c8 1300fail_wmi_handler:
3d7b1655 1301 eeepc_wmi_backlight_exit(eeepc);
27c136c8 1302fail_backlight:
ba48fdb9
CC		 1303 eeepc_wmi_rfkill_exit(eeepc);
1304fail_rfkill:
084fca63
CC		 1305 eeepc_wmi_led_exit(eeepc);
1306fail_leds:
45f2c693 1307 eeepc_wmi_input_exit(eeepc);
27c136c8
CC		 1308fail_input:
1309 eeepc_wmi_platform_exit(eeepc);
1310fail_platform:
1311 kfree(eeepc);
a04ce290 1312 return err;
45f2c693
YW		 1313}
1314
a04ce290 1315static int __exit eeepc_wmi_remove(struct platform_device *device)
45f2c693
YW		 1316{
1317 struct eeepc_wmi *eeepc;
1318
1319 eeepc = platform_get_drvdata(device);
1320 wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
3d7b1655 1321 eeepc_wmi_backlight_exit(eeepc);
45f2c693 1322 eeepc_wmi_input_exit(eeepc);
084fca63 1323 eeepc_wmi_led_exit(eeepc);
ba48fdb9 1324 eeepc_wmi_rfkill_exit(eeepc);
8c1b2d83 1325 eeepc_wmi_debugfs_exit(eeepc);
27c136c8 1326 eeepc_wmi_platform_exit(eeepc);
45f2c693 1327
27c136c8 1328 kfree(eeepc);
45f2c693
YW		 1329 return 0;
1330}
1331
0773d7f9
CC		 1332/*
1333 * Platform driver - hibernate/resume callbacks
1334 */
1335static int eeepc_hotk_thaw(struct device *device)
1336{
1337 struct eeepc_wmi *eeepc = dev_get_drvdata(device);
1338
1339 if (eeepc->wlan_rfkill) {
1340 bool wlan;
1341
1342 /*
1343 * Work around bios bug - acpi _PTS turns off the wireless led
1344 * during suspend. Normally it restores it on resume, but
1345 * we should kick it ourselves in case hibernation is aborted.
1346 */
1347 wlan = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN);
1348 eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_WLAN, wlan, NULL);
1349 }
1350
1351 return 0;
1352}
1353
1354static int eeepc_hotk_restore(struct device *device)
1355{
1356 struct eeepc_wmi *eeepc = dev_get_drvdata(device);
1357 int bl;
1358
1359 /* Refresh both wlan rfkill state and pci hotplug */
1360 if (eeepc->wlan_rfkill)
1361 eeepc_rfkill_hotplug(eeepc);
1362
1363 if (eeepc->bluetooth_rfkill) {
1364 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BLUETOOTH);
1365 rfkill_set_sw_state(eeepc->bluetooth_rfkill, bl);
2e9e159d
CC		 1366 }
1367 if (eeepc->wimax_rfkill) {
1368 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WIMAX);
1369 rfkill_set_sw_state(eeepc->wimax_rfkill, bl);
1370 }
0773d7f9
CC		 1371 if (eeepc->wwan3g_rfkill) {
1372 bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WWAN3G);
1373 rfkill_set_sw_state(eeepc->wwan3g_rfkill, bl);
1374 }
1375
1376 return 0;
1377}
1378
1379static const struct dev_pm_ops eeepc_pm_ops = {
1380 .thaw = eeepc_hotk_thaw,
1381 .restore = eeepc_hotk_restore,
1382};
1383
45f2c693 1384static struct platform_driver platform_driver = {
a04ce290 1385 .remove = __exit_p(eeepc_wmi_remove),
45f2c693
YW		 1386 .driver = {
1387 .name = EEEPC_WMI_FILE,
1388 .owner = THIS_MODULE,
0773d7f9 1389 .pm = &eeepc_pm_ops,
45f2c693 1390 },
45f2c693
YW		 1391};
1392
d358cb55
CC		 1393static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level,
1394 void *context, void **retval)
1395{
1396 pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID);
1397 *(bool *)context = true;
1398 return AE_CTRL_TERMINATE;
1399}
1400
1401static int __init eeepc_wmi_check_atkd(void)
1402{
1403 acpi_status status;
1404 bool found = false;
1405
1406 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
1407 &found, NULL);
1408
1409 if (ACPI_FAILURE(status) || !found)
1410 return 0;
1411 return -1;
1412}
1413
a04ce290 1414static int __init eeepc_wmi_probe(struct platform_device *pdev)
45f2c693 1415{
3d7b1655
YW		 1416 if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) ||
1417 !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) {
81248889 1418 pr_warning("No known WMI GUID found\n");
ee027e4a
YW		 1419 return -ENODEV;
1420 }
1421
d358cb55
CC		 1422 if (eeepc_wmi_check_atkd()) {
1423 pr_warning("WMI device present, but legacy ATKD device is also "
1424 "present and enabled.");
1425 pr_warning("You probably booted with acpi_osi=\"Linux\" or "
1426 "acpi_osi=\"!Windows 2009\"");
1427 pr_warning("Can't load eeepc-wmi, use default acpi_osi "
1428 "(preferred) or eeepc-laptop");
1429 return -ENODEV;
1430 }
1431
a04ce290
CC		 1432 return eeepc_wmi_add(pdev);
1433}
45f2c693 1434
a04ce290 1435static struct platform_device *platform_device;
ee027e4a 1436
a04ce290
CC		 1437static int __init eeepc_wmi_init(void)
1438{
1439 platform_device = platform_create_bundle(&platform_driver,
1440 eeepc_wmi_probe,
1441 NULL, 0, NULL, 0);
1442 if (IS_ERR(platform_device))
1443 return PTR_ERR(platform_device);
ee027e4a
YW		 1444 return 0;
1445}
1446
1447static void __exit eeepc_wmi_exit(void)
1448{
a04ce290 1449 platform_device_unregister(platform_device);
45f2c693 1450 platform_driver_unregister(&platform_driver);
ee027e4a
YW		 1451}
1452
1453module_init(eeepc_wmi_init);
1454module_exit(eeepc_wmi_exit);
Linux kernel - Deliverables
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