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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 |
51 | MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>"); |
52 | MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); | |
53 | MODULE_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 | |
60 | MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); | |
3d7b1655 | 61 | MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID); |
ee027e4a YW |
62 | |
63 | #define NOTIFY_BRNUP_MIN 0x11 | |
64 | #define NOTIFY_BRNUP_MAX 0x1f | |
65 | #define NOTIFY_BRNDOWN_MIN 0x20 | |
66 | #define NOTIFY_BRNDOWN_MAX 0x2e | |
67 | ||
3d7b1655 YW |
68 | #define EEEPC_WMI_METHODID_DEVS 0x53564544 |
69 | #define EEEPC_WMI_METHODID_DSTS 0x53544344 | |
7f80d734 | 70 | #define EEEPC_WMI_METHODID_CFVS 0x53564643 |
3d7b1655 YW |
71 | |
72 | #define EEEPC_WMI_DEVID_BACKLIGHT 0x00050012 | |
084fca63 | 73 | #define EEEPC_WMI_DEVID_TPDLED 0x00100011 |
ba48fdb9 CC |
74 | #define EEEPC_WMI_DEVID_WLAN 0x00010011 |
75 | #define EEEPC_WMI_DEVID_BLUETOOTH 0x00010013 | |
76 | #define EEEPC_WMI_DEVID_WWAN3G 0x00010019 | |
3d7b1655 | 77 | |
afa7c886 CC |
78 | static bool hotplug_wireless; |
79 | ||
80 | module_param(hotplug_wireless, bool, 0444); | |
81 | MODULE_PARM_DESC(hotplug_wireless, | |
82 | "Enable hotplug for wireless device. " | |
83 | "If your laptop needs that, please report to " | |
84 | "acpi4asus-user@lists.sourceforge.net."); | |
85 | ||
ee027e4a YW |
86 | static const struct key_entry eeepc_wmi_keymap[] = { |
87 | /* Sleep already handled via generic ACPI code */ | |
ee027e4a YW |
88 | { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } }, |
89 | { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } }, | |
5628e5aa CC |
90 | { KE_KEY, 0x30, { KEY_VOLUMEUP } }, |
91 | { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, | |
92 | { KE_KEY, 0x32, { KEY_MUTE } }, | |
93 | { KE_KEY, 0x5c, { KEY_F15 } }, | |
94 | { KE_KEY, 0x5d, { KEY_WLAN } }, | |
eda17484 | 95 | { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */ |
bc40cce2 | 96 | { KE_KEY, 0x88, { KEY_WLAN } }, |
5628e5aa CC |
97 | { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, |
98 | { KE_KEY, 0xe0, { KEY_PROG1 } }, | |
eda17484 CB |
99 | { KE_KEY, 0xe1, { KEY_F14 } }, |
100 | { KE_KEY, 0xe9, { KEY_DISPLAY_OFF } }, | |
ee027e4a YW |
101 | { KE_END, 0}, |
102 | }; | |
103 | ||
3d7b1655 YW |
104 | struct bios_args { |
105 | u32 dev_id; | |
106 | u32 ctrl_param; | |
107 | }; | |
108 | ||
8c1b2d83 CC |
109 | /* |
110 | * eeepc-wmi/ - debugfs root directory | |
111 | * dev_id - current dev_id | |
112 | * ctrl_param - current ctrl_param | |
113 | * devs - call DEVS(dev_id, ctrl_param) and print result | |
114 | * dsts - call DSTS(dev_id) and print result | |
115 | */ | |
116 | struct eeepc_wmi_debug { | |
117 | struct dentry *root; | |
118 | u32 dev_id; | |
119 | u32 ctrl_param; | |
120 | }; | |
121 | ||
81248889 | 122 | struct eeepc_wmi { |
afa7c886 CC |
123 | bool hotplug_wireless; |
124 | ||
81248889 | 125 | struct input_dev *inputdev; |
3d7b1655 | 126 | struct backlight_device *backlight_device; |
27c136c8 | 127 | struct platform_device *platform_device; |
084fca63 CC |
128 | |
129 | struct led_classdev tpd_led; | |
130 | int tpd_led_wk; | |
131 | struct workqueue_struct *led_workqueue; | |
132 | struct work_struct tpd_led_work; | |
ba48fdb9 CC |
133 | |
134 | struct rfkill *wlan_rfkill; | |
135 | struct rfkill *bluetooth_rfkill; | |
136 | struct rfkill *wwan3g_rfkill; | |
8c1b2d83 | 137 | |
afa7c886 CC |
138 | struct hotplug_slot *hotplug_slot; |
139 | struct mutex hotplug_lock; | |
279f8f95 CC |
140 | struct mutex wmi_lock; |
141 | struct workqueue_struct *hotplug_workqueue; | |
142 | struct work_struct hotplug_work; | |
afa7c886 | 143 | |
8c1b2d83 | 144 | struct eeepc_wmi_debug debug; |
81248889 YW |
145 | }; |
146 | ||
27c136c8 | 147 | /* Only used in eeepc_wmi_init() and eeepc_wmi_exit() */ |
45f2c693 | 148 | static struct platform_device *platform_device; |
ee027e4a | 149 | |
81248889 | 150 | static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc) |
ee027e4a YW |
151 | { |
152 | int err; | |
153 | ||
81248889 YW |
154 | eeepc->inputdev = input_allocate_device(); |
155 | if (!eeepc->inputdev) | |
ee027e4a YW |
156 | return -ENOMEM; |
157 | ||
81248889 | 158 | eeepc->inputdev->name = "Eee PC WMI hotkeys"; |
45f2c693 | 159 | eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0"; |
81248889 | 160 | eeepc->inputdev->id.bustype = BUS_HOST; |
27c136c8 | 161 | eeepc->inputdev->dev.parent = &eeepc->platform_device->dev; |
ee027e4a | 162 | |
81248889 | 163 | err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL); |
ee027e4a YW |
164 | if (err) |
165 | goto err_free_dev; | |
166 | ||
81248889 | 167 | err = input_register_device(eeepc->inputdev); |
ee027e4a YW |
168 | if (err) |
169 | goto err_free_keymap; | |
170 | ||
171 | return 0; | |
172 | ||
173 | err_free_keymap: | |
81248889 | 174 | sparse_keymap_free(eeepc->inputdev); |
ee027e4a | 175 | err_free_dev: |
81248889 | 176 | input_free_device(eeepc->inputdev); |
ee027e4a YW |
177 | return err; |
178 | } | |
179 | ||
81248889 YW |
180 | static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc) |
181 | { | |
182 | if (eeepc->inputdev) { | |
183 | sparse_keymap_free(eeepc->inputdev); | |
184 | input_unregister_device(eeepc->inputdev); | |
185 | } | |
186 | ||
187 | eeepc->inputdev = NULL; | |
188 | } | |
189 | ||
2a3f0064 | 190 | static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *retval) |
3d7b1655 YW |
191 | { |
192 | struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id }; | |
193 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
194 | union acpi_object *obj; | |
195 | acpi_status status; | |
196 | u32 tmp; | |
197 | ||
198 | status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, | |
afa7c886 CC |
199 | 1, EEEPC_WMI_METHODID_DSTS, |
200 | &input, &output); | |
3d7b1655 YW |
201 | |
202 | if (ACPI_FAILURE(status)) | |
203 | return status; | |
204 | ||
205 | obj = (union acpi_object *)output.pointer; | |
206 | if (obj && obj->type == ACPI_TYPE_INTEGER) | |
207 | tmp = (u32)obj->integer.value; | |
208 | else | |
209 | tmp = 0; | |
210 | ||
2a3f0064 CC |
211 | if (retval) |
212 | *retval = tmp; | |
3d7b1655 YW |
213 | |
214 | kfree(obj); | |
215 | ||
216 | return status; | |
217 | ||
218 | } | |
219 | ||
8c1b2d83 CC |
220 | static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param, |
221 | u32 *retval) | |
3d7b1655 YW |
222 | { |
223 | struct bios_args args = { | |
224 | .dev_id = dev_id, | |
225 | .ctrl_param = ctrl_param, | |
226 | }; | |
227 | struct acpi_buffer input = { (acpi_size)sizeof(args), &args }; | |
228 | acpi_status status; | |
229 | ||
8c1b2d83 CC |
230 | if (!retval) { |
231 | status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, | |
232 | EEEPC_WMI_METHODID_DEVS, | |
233 | &input, NULL); | |
234 | } else { | |
235 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
236 | union acpi_object *obj; | |
237 | u32 tmp; | |
238 | ||
239 | status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, | |
240 | EEEPC_WMI_METHODID_DEVS, | |
241 | &input, &output); | |
242 | ||
243 | if (ACPI_FAILURE(status)) | |
244 | return status; | |
245 | ||
246 | obj = (union acpi_object *)output.pointer; | |
247 | if (obj && obj->type == ACPI_TYPE_INTEGER) | |
248 | tmp = (u32)obj->integer.value; | |
249 | else | |
250 | tmp = 0; | |
251 | ||
252 | *retval = tmp; | |
253 | ||
254 | kfree(obj); | |
255 | } | |
3d7b1655 YW |
256 | |
257 | return status; | |
258 | } | |
259 | ||
5c95638d CC |
260 | /* Helper for special devices with magic return codes */ |
261 | static int eeepc_wmi_get_devstate_simple(u32 dev_id) | |
262 | { | |
263 | u32 retval = 0; | |
264 | acpi_status status; | |
265 | ||
266 | status = eeepc_wmi_get_devstate(dev_id, &retval); | |
267 | ||
268 | if (ACPI_FAILURE(status)) | |
269 | return -EINVAL; | |
270 | ||
271 | /* If the device is present, DSTS will always set some bits | |
272 | * 0x00070000 - 1110000000000000000 - device supported | |
273 | * 0x00060000 - 1100000000000000000 - not supported | |
274 | * 0x00020000 - 0100000000000000000 - device supported | |
275 | * 0x00010000 - 0010000000000000000 - not supported / special mode ? | |
276 | */ | |
277 | if (!retval || retval == 0x00060000) | |
278 | return -ENODEV; | |
279 | ||
280 | return retval & 0x1; | |
281 | } | |
282 | ||
084fca63 CC |
283 | /* |
284 | * LEDs | |
285 | */ | |
286 | /* | |
287 | * These functions actually update the LED's, and are called from a | |
288 | * workqueue. By doing this as separate work rather than when the LED | |
289 | * subsystem asks, we avoid messing with the Eeepc ACPI stuff during a | |
290 | * potentially bad time, such as a timer interrupt. | |
291 | */ | |
292 | static void tpd_led_update(struct work_struct *work) | |
293 | { | |
294 | int ctrl_param; | |
295 | struct eeepc_wmi *eeepc; | |
296 | ||
297 | eeepc = container_of(work, struct eeepc_wmi, tpd_led_work); | |
298 | ||
299 | ctrl_param = eeepc->tpd_led_wk; | |
8c1b2d83 | 300 | eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TPDLED, ctrl_param, NULL); |
084fca63 CC |
301 | } |
302 | ||
303 | static void tpd_led_set(struct led_classdev *led_cdev, | |
304 | enum led_brightness value) | |
305 | { | |
306 | struct eeepc_wmi *eeepc; | |
307 | ||
308 | eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); | |
309 | ||
310 | eeepc->tpd_led_wk = !!value; | |
311 | queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); | |
312 | } | |
313 | ||
314 | static int read_tpd_state(struct eeepc_wmi *eeepc) | |
315 | { | |
5c95638d | 316 | return eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_TPDLED); |
084fca63 CC |
317 | } |
318 | ||
319 | static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) | |
320 | { | |
321 | struct eeepc_wmi *eeepc; | |
322 | ||
323 | eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); | |
324 | ||
325 | return read_tpd_state(eeepc); | |
326 | } | |
327 | ||
328 | static int eeepc_wmi_led_init(struct eeepc_wmi *eeepc) | |
329 | { | |
330 | int rv; | |
331 | ||
332 | if (read_tpd_state(eeepc) < 0) | |
333 | return 0; | |
334 | ||
335 | eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
336 | if (!eeepc->led_workqueue) | |
337 | return -ENOMEM; | |
338 | INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); | |
339 | ||
340 | eeepc->tpd_led.name = "eeepc::touchpad"; | |
341 | eeepc->tpd_led.brightness_set = tpd_led_set; | |
342 | eeepc->tpd_led.brightness_get = tpd_led_get; | |
343 | eeepc->tpd_led.max_brightness = 1; | |
344 | ||
345 | rv = led_classdev_register(&eeepc->platform_device->dev, | |
346 | &eeepc->tpd_led); | |
347 | if (rv) { | |
348 | destroy_workqueue(eeepc->led_workqueue); | |
349 | return rv; | |
350 | } | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | static void eeepc_wmi_led_exit(struct eeepc_wmi *eeepc) | |
356 | { | |
357 | if (eeepc->tpd_led.dev) | |
358 | led_classdev_unregister(&eeepc->tpd_led); | |
359 | if (eeepc->led_workqueue) | |
360 | destroy_workqueue(eeepc->led_workqueue); | |
361 | } | |
362 | ||
afa7c886 CC |
363 | /* |
364 | * PCI hotplug (for wlan rfkill) | |
365 | */ | |
366 | static bool eeepc_wlan_rfkill_blocked(struct eeepc_wmi *eeepc) | |
367 | { | |
5c95638d | 368 | int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); |
afa7c886 | 369 | |
5c95638d | 370 | if (result < 0) |
afa7c886 | 371 | return false; |
5c95638d | 372 | return !result; |
afa7c886 CC |
373 | } |
374 | ||
375 | static void eeepc_rfkill_hotplug(struct eeepc_wmi *eeepc) | |
376 | { | |
377 | struct pci_dev *dev; | |
378 | struct pci_bus *bus; | |
279f8f95 | 379 | bool blocked; |
afa7c886 CC |
380 | bool absent; |
381 | u32 l; | |
382 | ||
279f8f95 CC |
383 | mutex_lock(&eeepc->wmi_lock); |
384 | blocked = eeepc_wlan_rfkill_blocked(eeepc); | |
385 | mutex_unlock(&eeepc->wmi_lock); | |
afa7c886 CC |
386 | |
387 | mutex_lock(&eeepc->hotplug_lock); | |
388 | ||
279f8f95 CC |
389 | if (eeepc->wlan_rfkill) |
390 | rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); | |
391 | ||
afa7c886 CC |
392 | if (eeepc->hotplug_slot) { |
393 | bus = pci_find_bus(0, 1); | |
394 | if (!bus) { | |
395 | pr_warning("Unable to find PCI bus 1?\n"); | |
396 | goto out_unlock; | |
397 | } | |
398 | ||
399 | if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { | |
400 | pr_err("Unable to read PCI config space?\n"); | |
401 | goto out_unlock; | |
402 | } | |
403 | absent = (l == 0xffffffff); | |
404 | ||
405 | if (blocked != absent) { | |
406 | pr_warning("BIOS says wireless lan is %s, " | |
407 | "but the pci device is %s\n", | |
408 | blocked ? "blocked" : "unblocked", | |
409 | absent ? "absent" : "present"); | |
410 | pr_warning("skipped wireless hotplug as probably " | |
411 | "inappropriate for this model\n"); | |
412 | goto out_unlock; | |
413 | } | |
414 | ||
415 | if (!blocked) { | |
416 | dev = pci_get_slot(bus, 0); | |
417 | if (dev) { | |
418 | /* Device already present */ | |
419 | pci_dev_put(dev); | |
420 | goto out_unlock; | |
421 | } | |
422 | dev = pci_scan_single_device(bus, 0); | |
423 | if (dev) { | |
424 | pci_bus_assign_resources(bus); | |
425 | if (pci_bus_add_device(dev)) | |
426 | pr_err("Unable to hotplug wifi\n"); | |
427 | } | |
428 | } else { | |
429 | dev = pci_get_slot(bus, 0); | |
430 | if (dev) { | |
431 | pci_remove_bus_device(dev); | |
432 | pci_dev_put(dev); | |
433 | } | |
434 | } | |
435 | } | |
436 | ||
437 | out_unlock: | |
438 | mutex_unlock(&eeepc->hotplug_lock); | |
439 | } | |
440 | ||
441 | static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) | |
442 | { | |
443 | struct eeepc_wmi *eeepc = data; | |
444 | ||
445 | if (event != ACPI_NOTIFY_BUS_CHECK) | |
446 | return; | |
447 | ||
279f8f95 CC |
448 | /* |
449 | * We can't call directly eeepc_rfkill_hotplug because most | |
450 | * of the time WMBC is still being executed and not reetrant. | |
451 | * There is currently no way to tell ACPICA that we want this | |
452 | * method to be serialized, we schedule a eeepc_rfkill_hotplug | |
453 | * call later, in a safer context. | |
454 | */ | |
455 | queue_work(eeepc->hotplug_workqueue, &eeepc->hotplug_work); | |
afa7c886 CC |
456 | } |
457 | ||
458 | static int eeepc_register_rfkill_notifier(struct eeepc_wmi *eeepc, | |
459 | char *node) | |
460 | { | |
461 | acpi_status status; | |
462 | acpi_handle handle; | |
463 | ||
464 | status = acpi_get_handle(NULL, node, &handle); | |
465 | ||
466 | if (ACPI_SUCCESS(status)) { | |
467 | status = acpi_install_notify_handler(handle, | |
468 | ACPI_SYSTEM_NOTIFY, | |
469 | eeepc_rfkill_notify, | |
470 | eeepc); | |
471 | if (ACPI_FAILURE(status)) | |
472 | pr_warning("Failed to register notify on %s\n", node); | |
473 | } else | |
474 | return -ENODEV; | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | static void eeepc_unregister_rfkill_notifier(struct eeepc_wmi *eeepc, | |
480 | char *node) | |
481 | { | |
482 | acpi_status status = AE_OK; | |
483 | acpi_handle handle; | |
484 | ||
485 | status = acpi_get_handle(NULL, node, &handle); | |
486 | ||
487 | if (ACPI_SUCCESS(status)) { | |
488 | status = acpi_remove_notify_handler(handle, | |
489 | ACPI_SYSTEM_NOTIFY, | |
490 | eeepc_rfkill_notify); | |
491 | if (ACPI_FAILURE(status)) | |
492 | pr_err("Error removing rfkill notify handler %s\n", | |
493 | node); | |
494 | } | |
495 | } | |
496 | ||
497 | static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, | |
498 | u8 *value) | |
499 | { | |
5c95638d | 500 | int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); |
afa7c886 | 501 | |
5c95638d CC |
502 | if (result < 0) |
503 | return result; | |
afa7c886 | 504 | |
5c95638d | 505 | *value = !!result; |
afa7c886 CC |
506 | return 0; |
507 | } | |
508 | ||
509 | static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) | |
510 | { | |
511 | kfree(hotplug_slot->info); | |
512 | kfree(hotplug_slot); | |
513 | } | |
514 | ||
515 | static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { | |
516 | .owner = THIS_MODULE, | |
517 | .get_adapter_status = eeepc_get_adapter_status, | |
518 | .get_power_status = eeepc_get_adapter_status, | |
519 | }; | |
520 | ||
279f8f95 CC |
521 | static void eeepc_hotplug_work(struct work_struct *work) |
522 | { | |
523 | struct eeepc_wmi *eeepc; | |
524 | ||
525 | eeepc = container_of(work, struct eeepc_wmi, hotplug_work); | |
526 | eeepc_rfkill_hotplug(eeepc); | |
527 | } | |
528 | ||
afa7c886 CC |
529 | static int eeepc_setup_pci_hotplug(struct eeepc_wmi *eeepc) |
530 | { | |
531 | int ret = -ENOMEM; | |
532 | struct pci_bus *bus = pci_find_bus(0, 1); | |
533 | ||
534 | if (!bus) { | |
535 | pr_err("Unable to find wifi PCI bus\n"); | |
536 | return -ENODEV; | |
537 | } | |
538 | ||
279f8f95 CC |
539 | eeepc->hotplug_workqueue = |
540 | create_singlethread_workqueue("hotplug_workqueue"); | |
541 | if (!eeepc->hotplug_workqueue) | |
542 | goto error_workqueue; | |
543 | ||
544 | INIT_WORK(&eeepc->hotplug_work, eeepc_hotplug_work); | |
545 | ||
afa7c886 CC |
546 | eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); |
547 | if (!eeepc->hotplug_slot) | |
548 | goto error_slot; | |
549 | ||
550 | eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), | |
551 | GFP_KERNEL); | |
552 | if (!eeepc->hotplug_slot->info) | |
553 | goto error_info; | |
554 | ||
555 | eeepc->hotplug_slot->private = eeepc; | |
556 | eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; | |
557 | eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; | |
558 | eeepc_get_adapter_status(eeepc->hotplug_slot, | |
559 | &eeepc->hotplug_slot->info->adapter_status); | |
560 | ||
561 | ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); | |
562 | if (ret) { | |
563 | pr_err("Unable to register hotplug slot - %d\n", ret); | |
564 | goto error_register; | |
565 | } | |
566 | ||
567 | return 0; | |
568 | ||
569 | error_register: | |
570 | kfree(eeepc->hotplug_slot->info); | |
571 | error_info: | |
572 | kfree(eeepc->hotplug_slot); | |
573 | eeepc->hotplug_slot = NULL; | |
574 | error_slot: | |
279f8f95 CC |
575 | destroy_workqueue(eeepc->hotplug_workqueue); |
576 | error_workqueue: | |
afa7c886 CC |
577 | return ret; |
578 | } | |
579 | ||
ba48fdb9 CC |
580 | /* |
581 | * Rfkill devices | |
582 | */ | |
583 | static int eeepc_rfkill_set(void *data, bool blocked) | |
584 | { | |
585 | int dev_id = (unsigned long)data; | |
586 | u32 ctrl_param = !blocked; | |
7898cf1a CC |
587 | acpi_status status; |
588 | ||
589 | status = eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL); | |
590 | ||
591 | if (ACPI_FAILURE(status)) | |
592 | return -EIO; | |
ba48fdb9 | 593 | |
7898cf1a | 594 | return 0; |
ba48fdb9 CC |
595 | } |
596 | ||
597 | static void eeepc_rfkill_query(struct rfkill *rfkill, void *data) | |
598 | { | |
599 | int dev_id = (unsigned long)data; | |
5c95638d | 600 | int result; |
ba48fdb9 | 601 | |
5c95638d | 602 | result = eeepc_wmi_get_devstate_simple(dev_id); |
ba48fdb9 | 603 | |
5c95638d | 604 | if (result < 0) |
ba48fdb9 CC |
605 | return ; |
606 | ||
5c95638d | 607 | rfkill_set_sw_state(rfkill, !result); |
ba48fdb9 CC |
608 | } |
609 | ||
279f8f95 CC |
610 | static int eeepc_rfkill_wlan_set(void *data, bool blocked) |
611 | { | |
612 | struct eeepc_wmi *eeepc = data; | |
613 | int ret; | |
614 | ||
615 | /* | |
616 | * This handler is enabled only if hotplug is enabled. | |
617 | * In this case, the eeepc_wmi_set_devstate() will | |
618 | * trigger a wmi notification and we need to wait | |
619 | * this call to finish before being able to call | |
620 | * any wmi method | |
621 | */ | |
622 | mutex_lock(&eeepc->wmi_lock); | |
623 | ret = eeepc_rfkill_set((void *)(long)EEEPC_WMI_DEVID_WLAN, blocked); | |
624 | mutex_unlock(&eeepc->wmi_lock); | |
625 | return ret; | |
626 | } | |
627 | ||
628 | static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data) | |
629 | { | |
630 | eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN); | |
631 | } | |
632 | ||
633 | static const struct rfkill_ops eeepc_rfkill_wlan_ops = { | |
634 | .set_block = eeepc_rfkill_wlan_set, | |
635 | .query = eeepc_rfkill_wlan_query, | |
636 | }; | |
637 | ||
ba48fdb9 CC |
638 | static const struct rfkill_ops eeepc_rfkill_ops = { |
639 | .set_block = eeepc_rfkill_set, | |
640 | .query = eeepc_rfkill_query, | |
641 | }; | |
642 | ||
643 | static int eeepc_new_rfkill(struct eeepc_wmi *eeepc, | |
644 | struct rfkill **rfkill, | |
645 | const char *name, | |
646 | enum rfkill_type type, int dev_id) | |
647 | { | |
5c95638d | 648 | int result = eeepc_wmi_get_devstate_simple(dev_id); |
ba48fdb9 | 649 | |
5c95638d CC |
650 | if (result < 0) |
651 | return result; | |
ba48fdb9 | 652 | |
279f8f95 CC |
653 | if (dev_id == EEEPC_WMI_DEVID_WLAN && eeepc->hotplug_wireless) |
654 | *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, | |
655 | &eeepc_rfkill_wlan_ops, eeepc); | |
656 | else | |
657 | *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, | |
658 | &eeepc_rfkill_ops, (void *)(long)dev_id); | |
ba48fdb9 CC |
659 | |
660 | if (!*rfkill) | |
661 | return -EINVAL; | |
662 | ||
5c95638d | 663 | rfkill_init_sw_state(*rfkill, !result); |
ba48fdb9 CC |
664 | result = rfkill_register(*rfkill); |
665 | if (result) { | |
666 | rfkill_destroy(*rfkill); | |
667 | *rfkill = NULL; | |
668 | return result; | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
673 | static void eeepc_wmi_rfkill_exit(struct eeepc_wmi *eeepc) | |
674 | { | |
afa7c886 CC |
675 | eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); |
676 | eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); | |
677 | eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); | |
ba48fdb9 CC |
678 | if (eeepc->wlan_rfkill) { |
679 | rfkill_unregister(eeepc->wlan_rfkill); | |
680 | rfkill_destroy(eeepc->wlan_rfkill); | |
681 | eeepc->wlan_rfkill = NULL; | |
682 | } | |
afa7c886 CC |
683 | /* |
684 | * Refresh pci hotplug in case the rfkill state was changed after | |
685 | * eeepc_unregister_rfkill_notifier() | |
686 | */ | |
687 | eeepc_rfkill_hotplug(eeepc); | |
688 | if (eeepc->hotplug_slot) | |
689 | pci_hp_deregister(eeepc->hotplug_slot); | |
279f8f95 CC |
690 | if (eeepc->hotplug_workqueue) |
691 | destroy_workqueue(eeepc->hotplug_workqueue); | |
afa7c886 | 692 | |
ba48fdb9 CC |
693 | if (eeepc->bluetooth_rfkill) { |
694 | rfkill_unregister(eeepc->bluetooth_rfkill); | |
695 | rfkill_destroy(eeepc->bluetooth_rfkill); | |
696 | eeepc->bluetooth_rfkill = NULL; | |
697 | } | |
698 | if (eeepc->wwan3g_rfkill) { | |
699 | rfkill_unregister(eeepc->wwan3g_rfkill); | |
700 | rfkill_destroy(eeepc->wwan3g_rfkill); | |
701 | eeepc->wwan3g_rfkill = NULL; | |
702 | } | |
703 | } | |
704 | ||
705 | static int eeepc_wmi_rfkill_init(struct eeepc_wmi *eeepc) | |
706 | { | |
707 | int result = 0; | |
708 | ||
afa7c886 | 709 | mutex_init(&eeepc->hotplug_lock); |
279f8f95 | 710 | mutex_init(&eeepc->wmi_lock); |
afa7c886 | 711 | |
ba48fdb9 CC |
712 | result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, |
713 | "eeepc-wlan", RFKILL_TYPE_WLAN, | |
714 | EEEPC_WMI_DEVID_WLAN); | |
715 | ||
716 | if (result && result != -ENODEV) | |
717 | goto exit; | |
718 | ||
719 | result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, | |
720 | "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, | |
721 | EEEPC_WMI_DEVID_BLUETOOTH); | |
722 | ||
723 | if (result && result != -ENODEV) | |
724 | goto exit; | |
725 | ||
726 | result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, | |
727 | "eeepc-wwan3g", RFKILL_TYPE_WWAN, | |
728 | EEEPC_WMI_DEVID_WWAN3G); | |
729 | ||
730 | if (result && result != -ENODEV) | |
731 | goto exit; | |
732 | ||
afa7c886 CC |
733 | result = eeepc_setup_pci_hotplug(eeepc); |
734 | /* | |
735 | * If we get -EBUSY then something else is handling the PCI hotplug - | |
736 | * don't fail in this case | |
737 | */ | |
738 | if (result == -EBUSY) | |
739 | result = 0; | |
740 | ||
741 | eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); | |
742 | eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); | |
743 | eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); | |
744 | /* | |
745 | * Refresh pci hotplug in case the rfkill state was changed during | |
746 | * setup. | |
747 | */ | |
748 | eeepc_rfkill_hotplug(eeepc); | |
749 | ||
ba48fdb9 CC |
750 | exit: |
751 | if (result && result != -ENODEV) | |
752 | eeepc_wmi_rfkill_exit(eeepc); | |
753 | ||
754 | if (result == -ENODEV) | |
755 | result = 0; | |
756 | ||
757 | return result; | |
758 | } | |
759 | ||
084fca63 CC |
760 | /* |
761 | * Backlight | |
762 | */ | |
3d7b1655 YW |
763 | static int read_brightness(struct backlight_device *bd) |
764 | { | |
dfed65d5 | 765 | u32 retval; |
3d7b1655 YW |
766 | acpi_status status; |
767 | ||
2a3f0064 | 768 | status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BACKLIGHT, &retval); |
3d7b1655 YW |
769 | |
770 | if (ACPI_FAILURE(status)) | |
771 | return -1; | |
772 | else | |
2a3f0064 | 773 | return retval & 0xFF; |
3d7b1655 YW |
774 | } |
775 | ||
776 | static int update_bl_status(struct backlight_device *bd) | |
777 | { | |
778 | ||
dfed65d5 | 779 | u32 ctrl_param; |
3d7b1655 YW |
780 | acpi_status status; |
781 | ||
782 | ctrl_param = bd->props.brightness; | |
783 | ||
8c1b2d83 CC |
784 | status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, |
785 | ctrl_param, NULL); | |
3d7b1655 YW |
786 | |
787 | if (ACPI_FAILURE(status)) | |
788 | return -1; | |
789 | else | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static const struct backlight_ops eeepc_wmi_bl_ops = { | |
794 | .get_brightness = read_brightness, | |
795 | .update_status = update_bl_status, | |
796 | }; | |
797 | ||
798 | static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code) | |
799 | { | |
800 | struct backlight_device *bd = eeepc->backlight_device; | |
801 | int old = bd->props.brightness; | |
b7670ed6 | 802 | int new = old; |
3d7b1655 YW |
803 | |
804 | if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) | |
805 | new = code - NOTIFY_BRNUP_MIN + 1; | |
806 | else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) | |
807 | new = code - NOTIFY_BRNDOWN_MIN; | |
808 | ||
809 | bd->props.brightness = new; | |
810 | backlight_update_status(bd); | |
811 | backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); | |
812 | ||
813 | return old; | |
814 | } | |
815 | ||
816 | static int eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc) | |
817 | { | |
818 | struct backlight_device *bd; | |
819 | struct backlight_properties props; | |
820 | ||
821 | memset(&props, 0, sizeof(struct backlight_properties)); | |
822 | props.max_brightness = 15; | |
823 | bd = backlight_device_register(EEEPC_WMI_FILE, | |
27c136c8 | 824 | &eeepc->platform_device->dev, eeepc, |
3d7b1655 YW |
825 | &eeepc_wmi_bl_ops, &props); |
826 | if (IS_ERR(bd)) { | |
827 | pr_err("Could not register backlight device\n"); | |
828 | return PTR_ERR(bd); | |
829 | } | |
830 | ||
831 | eeepc->backlight_device = bd; | |
832 | ||
833 | bd->props.brightness = read_brightness(bd); | |
834 | bd->props.power = FB_BLANK_UNBLANK; | |
835 | backlight_update_status(bd); | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc) | |
841 | { | |
842 | if (eeepc->backlight_device) | |
843 | backlight_device_unregister(eeepc->backlight_device); | |
844 | ||
845 | eeepc->backlight_device = NULL; | |
846 | } | |
847 | ||
848 | static void eeepc_wmi_notify(u32 value, void *context) | |
849 | { | |
850 | struct eeepc_wmi *eeepc = context; | |
851 | struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; | |
852 | union acpi_object *obj; | |
853 | acpi_status status; | |
854 | int code; | |
855 | int orig_code; | |
856 | ||
857 | status = wmi_get_event_data(value, &response); | |
858 | if (status != AE_OK) { | |
859 | pr_err("bad event status 0x%x\n", status); | |
860 | return; | |
861 | } | |
862 | ||
863 | obj = (union acpi_object *)response.pointer; | |
864 | ||
865 | if (obj && obj->type == ACPI_TYPE_INTEGER) { | |
866 | code = obj->integer.value; | |
867 | orig_code = code; | |
868 | ||
869 | if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) | |
870 | code = NOTIFY_BRNUP_MIN; | |
871 | else if (code >= NOTIFY_BRNDOWN_MIN && | |
872 | code <= NOTIFY_BRNDOWN_MAX) | |
873 | code = NOTIFY_BRNDOWN_MIN; | |
874 | ||
875 | if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) { | |
876 | if (!acpi_video_backlight_support()) | |
877 | eeepc_wmi_backlight_notify(eeepc, orig_code); | |
878 | } | |
879 | ||
880 | if (!sparse_keymap_report_event(eeepc->inputdev, | |
881 | code, 1, true)) | |
882 | pr_info("Unknown key %x pressed\n", code); | |
883 | } | |
884 | ||
885 | kfree(obj); | |
886 | } | |
887 | ||
67fa38ec DT |
888 | static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, |
889 | const char *buf, size_t count) | |
7f80d734 CB |
890 | { |
891 | int value; | |
892 | struct acpi_buffer input = { (acpi_size)sizeof(value), &value }; | |
893 | acpi_status status; | |
894 | ||
895 | if (!count || sscanf(buf, "%i", &value) != 1) | |
896 | return -EINVAL; | |
897 | if (value < 0 || value > 2) | |
898 | return -EINVAL; | |
899 | ||
900 | status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, | |
901 | 1, EEEPC_WMI_METHODID_CFVS, &input, NULL); | |
902 | ||
903 | if (ACPI_FAILURE(status)) | |
904 | return -EIO; | |
905 | else | |
906 | return count; | |
907 | } | |
908 | ||
909 | static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); | |
910 | ||
4e37b42d CC |
911 | static struct attribute *platform_attributes[] = { |
912 | &dev_attr_cpufv.attr, | |
913 | NULL | |
914 | }; | |
915 | ||
916 | static struct attribute_group platform_attribute_group = { | |
917 | .attrs = platform_attributes | |
918 | }; | |
919 | ||
7f80d734 CB |
920 | static void eeepc_wmi_sysfs_exit(struct platform_device *device) |
921 | { | |
4e37b42d | 922 | sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); |
7f80d734 CB |
923 | } |
924 | ||
925 | static int eeepc_wmi_sysfs_init(struct platform_device *device) | |
926 | { | |
4e37b42d | 927 | return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); |
7f80d734 CB |
928 | } |
929 | ||
27c136c8 CC |
930 | /* |
931 | * Platform device | |
932 | */ | |
933 | static int __init eeepc_wmi_platform_init(struct eeepc_wmi *eeepc) | |
ee027e4a YW |
934 | { |
935 | int err; | |
27c136c8 CC |
936 | |
937 | eeepc->platform_device = platform_device_alloc(EEEPC_WMI_FILE, -1); | |
938 | if (!eeepc->platform_device) | |
939 | return -ENOMEM; | |
940 | platform_set_drvdata(eeepc->platform_device, eeepc); | |
941 | ||
942 | err = platform_device_add(eeepc->platform_device); | |
943 | if (err) | |
944 | goto fail_platform_device; | |
945 | ||
946 | err = eeepc_wmi_sysfs_init(eeepc->platform_device); | |
947 | if (err) | |
948 | goto fail_sysfs; | |
949 | return 0; | |
950 | ||
951 | fail_sysfs: | |
952 | platform_device_del(eeepc->platform_device); | |
953 | fail_platform_device: | |
954 | platform_device_put(eeepc->platform_device); | |
955 | return err; | |
956 | } | |
957 | ||
958 | static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc) | |
959 | { | |
960 | eeepc_wmi_sysfs_exit(eeepc->platform_device); | |
961 | platform_device_unregister(eeepc->platform_device); | |
962 | } | |
963 | ||
8c1b2d83 CC |
964 | /* |
965 | * debugfs | |
966 | */ | |
967 | struct eeepc_wmi_debugfs_node { | |
968 | struct eeepc_wmi *eeepc; | |
969 | char *name; | |
970 | int (*show)(struct seq_file *m, void *data); | |
971 | }; | |
972 | ||
973 | static int show_dsts(struct seq_file *m, void *data) | |
974 | { | |
975 | struct eeepc_wmi *eeepc = m->private; | |
976 | acpi_status status; | |
977 | u32 retval = -1; | |
978 | ||
979 | status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval); | |
980 | ||
981 | if (ACPI_FAILURE(status)) | |
982 | return -EIO; | |
983 | ||
984 | seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval); | |
985 | ||
986 | return 0; | |
987 | } | |
988 | ||
989 | static int show_devs(struct seq_file *m, void *data) | |
990 | { | |
991 | struct eeepc_wmi *eeepc = m->private; | |
992 | acpi_status status; | |
993 | u32 retval = -1; | |
994 | ||
995 | status = eeepc_wmi_set_devstate(eeepc->debug.dev_id, | |
996 | eeepc->debug.ctrl_param, &retval); | |
997 | if (ACPI_FAILURE(status)) | |
998 | return -EIO; | |
999 | ||
1000 | seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id, | |
1001 | eeepc->debug.ctrl_param, retval); | |
1002 | ||
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = { | |
1007 | { NULL, "devs", show_devs }, | |
1008 | { NULL, "dsts", show_dsts }, | |
1009 | }; | |
1010 | ||
1011 | static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file) | |
1012 | { | |
1013 | struct eeepc_wmi_debugfs_node *node = inode->i_private; | |
1014 | ||
1015 | return single_open(file, node->show, node->eeepc); | |
1016 | } | |
1017 | ||
1018 | static const struct file_operations eeepc_wmi_debugfs_io_ops = { | |
1019 | .owner = THIS_MODULE, | |
1020 | .open = eeepc_wmi_debugfs_open, | |
1021 | .read = seq_read, | |
1022 | .llseek = seq_lseek, | |
1023 | .release = single_release, | |
1024 | }; | |
1025 | ||
1026 | static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc) | |
1027 | { | |
1028 | debugfs_remove_recursive(eeepc->debug.root); | |
1029 | } | |
1030 | ||
1031 | static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc) | |
1032 | { | |
1033 | struct dentry *dent; | |
1034 | int i; | |
1035 | ||
1036 | eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL); | |
1037 | if (!eeepc->debug.root) { | |
1038 | pr_err("failed to create debugfs directory"); | |
1039 | goto error_debugfs; | |
1040 | } | |
1041 | ||
1042 | dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR, | |
1043 | eeepc->debug.root, &eeepc->debug.dev_id); | |
1044 | if (!dent) | |
1045 | goto error_debugfs; | |
1046 | ||
1047 | dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR, | |
1048 | eeepc->debug.root, &eeepc->debug.ctrl_param); | |
1049 | if (!dent) | |
1050 | goto error_debugfs; | |
1051 | ||
1052 | for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) { | |
1053 | struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i]; | |
1054 | ||
1055 | node->eeepc = eeepc; | |
1056 | dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, | |
1057 | eeepc->debug.root, node, | |
1058 | &eeepc_wmi_debugfs_io_ops); | |
1059 | if (!dent) { | |
1060 | pr_err("failed to create debug file: %s\n", node->name); | |
1061 | goto error_debugfs; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | return 0; | |
1066 | ||
1067 | error_debugfs: | |
1068 | eeepc_wmi_debugfs_exit(eeepc); | |
1069 | return -ENOMEM; | |
1070 | } | |
1071 | ||
27c136c8 CC |
1072 | /* |
1073 | * WMI Driver | |
1074 | */ | |
afa7c886 CC |
1075 | static void eeepc_dmi_check(struct eeepc_wmi *eeepc) |
1076 | { | |
1077 | const char *model; | |
1078 | ||
1079 | model = dmi_get_system_info(DMI_PRODUCT_NAME); | |
1080 | if (!model) | |
1081 | return; | |
1082 | ||
1083 | /* | |
1084 | * Whitelist for wlan hotplug | |
1085 | * | |
1086 | * Eeepc 1000H needs the current hotplug code to handle | |
1087 | * Fn+F2 correctly. We may add other Eeepc here later, but | |
1088 | * it seems that most of the laptops supported by eeepc-wmi | |
1089 | * don't need to be on this list | |
1090 | */ | |
1091 | if (strcmp(model, "1000H") == 0) { | |
1092 | eeepc->hotplug_wireless = true; | |
1093 | pr_info("wlan hotplug enabled\n"); | |
1094 | } | |
1095 | } | |
1096 | ||
27c136c8 CC |
1097 | static struct platform_device * __init eeepc_wmi_add(void) |
1098 | { | |
1099 | struct eeepc_wmi *eeepc; | |
ee027e4a | 1100 | acpi_status status; |
27c136c8 | 1101 | int err; |
ee027e4a | 1102 | |
27c136c8 CC |
1103 | eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL); |
1104 | if (!eeepc) | |
1105 | return ERR_PTR(-ENOMEM); | |
1106 | ||
afa7c886 CC |
1107 | eeepc->hotplug_wireless = hotplug_wireless; |
1108 | eeepc_dmi_check(eeepc); | |
1109 | ||
27c136c8 CC |
1110 | /* |
1111 | * Register the platform device first. It is used as a parent for the | |
1112 | * sub-devices below. | |
1113 | */ | |
1114 | err = eeepc_wmi_platform_init(eeepc); | |
1115 | if (err) | |
1116 | goto fail_platform; | |
45f2c693 YW |
1117 | |
1118 | err = eeepc_wmi_input_init(eeepc); | |
1119 | if (err) | |
27c136c8 | 1120 | goto fail_input; |
3d7b1655 | 1121 | |
084fca63 CC |
1122 | err = eeepc_wmi_led_init(eeepc); |
1123 | if (err) | |
1124 | goto fail_leds; | |
1125 | ||
ba48fdb9 CC |
1126 | err = eeepc_wmi_rfkill_init(eeepc); |
1127 | if (err) | |
1128 | goto fail_rfkill; | |
1129 | ||
3d7b1655 YW |
1130 | if (!acpi_video_backlight_support()) { |
1131 | err = eeepc_wmi_backlight_init(eeepc); | |
1132 | if (err) | |
27c136c8 | 1133 | goto fail_backlight; |
3d7b1655 YW |
1134 | } else |
1135 | pr_info("Backlight controlled by ACPI video driver\n"); | |
45f2c693 YW |
1136 | |
1137 | status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, | |
27c136c8 | 1138 | eeepc_wmi_notify, eeepc); |
45f2c693 YW |
1139 | if (ACPI_FAILURE(status)) { |
1140 | pr_err("Unable to register notify handler - %d\n", | |
1141 | status); | |
1142 | err = -ENODEV; | |
27c136c8 | 1143 | goto fail_wmi_handler; |
45f2c693 YW |
1144 | } |
1145 | ||
8c1b2d83 CC |
1146 | err = eeepc_wmi_debugfs_init(eeepc); |
1147 | if (err) | |
1148 | goto fail_debugfs; | |
1149 | ||
27c136c8 | 1150 | return eeepc->platform_device; |
45f2c693 | 1151 | |
8c1b2d83 CC |
1152 | fail_debugfs: |
1153 | wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); | |
27c136c8 | 1154 | fail_wmi_handler: |
3d7b1655 | 1155 | eeepc_wmi_backlight_exit(eeepc); |
27c136c8 | 1156 | fail_backlight: |
ba48fdb9 CC |
1157 | eeepc_wmi_rfkill_exit(eeepc); |
1158 | fail_rfkill: | |
084fca63 CC |
1159 | eeepc_wmi_led_exit(eeepc); |
1160 | fail_leds: | |
45f2c693 | 1161 | eeepc_wmi_input_exit(eeepc); |
27c136c8 CC |
1162 | fail_input: |
1163 | eeepc_wmi_platform_exit(eeepc); | |
1164 | fail_platform: | |
1165 | kfree(eeepc); | |
1166 | return ERR_PTR(err); | |
45f2c693 YW |
1167 | } |
1168 | ||
27c136c8 | 1169 | static int eeepc_wmi_remove(struct platform_device *device) |
45f2c693 YW |
1170 | { |
1171 | struct eeepc_wmi *eeepc; | |
1172 | ||
1173 | eeepc = platform_get_drvdata(device); | |
1174 | wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); | |
3d7b1655 | 1175 | eeepc_wmi_backlight_exit(eeepc); |
45f2c693 | 1176 | eeepc_wmi_input_exit(eeepc); |
084fca63 | 1177 | eeepc_wmi_led_exit(eeepc); |
ba48fdb9 | 1178 | eeepc_wmi_rfkill_exit(eeepc); |
8c1b2d83 | 1179 | eeepc_wmi_debugfs_exit(eeepc); |
27c136c8 | 1180 | eeepc_wmi_platform_exit(eeepc); |
45f2c693 | 1181 | |
27c136c8 | 1182 | kfree(eeepc); |
45f2c693 YW |
1183 | return 0; |
1184 | } | |
1185 | ||
1186 | static struct platform_driver platform_driver = { | |
1187 | .driver = { | |
1188 | .name = EEEPC_WMI_FILE, | |
1189 | .owner = THIS_MODULE, | |
1190 | }, | |
45f2c693 YW |
1191 | }; |
1192 | ||
d358cb55 CC |
1193 | static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level, |
1194 | void *context, void **retval) | |
1195 | { | |
1196 | pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID); | |
1197 | *(bool *)context = true; | |
1198 | return AE_CTRL_TERMINATE; | |
1199 | } | |
1200 | ||
1201 | static int __init eeepc_wmi_check_atkd(void) | |
1202 | { | |
1203 | acpi_status status; | |
1204 | bool found = false; | |
1205 | ||
1206 | status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, | |
1207 | &found, NULL); | |
1208 | ||
1209 | if (ACPI_FAILURE(status) || !found) | |
1210 | return 0; | |
1211 | return -1; | |
1212 | } | |
1213 | ||
45f2c693 YW |
1214 | static int __init eeepc_wmi_init(void) |
1215 | { | |
45f2c693 YW |
1216 | int err; |
1217 | ||
3d7b1655 YW |
1218 | if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) || |
1219 | !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) { | |
81248889 | 1220 | pr_warning("No known WMI GUID found\n"); |
ee027e4a YW |
1221 | return -ENODEV; |
1222 | } | |
1223 | ||
d358cb55 CC |
1224 | if (eeepc_wmi_check_atkd()) { |
1225 | pr_warning("WMI device present, but legacy ATKD device is also " | |
1226 | "present and enabled."); | |
1227 | pr_warning("You probably booted with acpi_osi=\"Linux\" or " | |
1228 | "acpi_osi=\"!Windows 2009\""); | |
1229 | pr_warning("Can't load eeepc-wmi, use default acpi_osi " | |
1230 | "(preferred) or eeepc-laptop"); | |
1231 | return -ENODEV; | |
1232 | } | |
1233 | ||
27c136c8 CC |
1234 | platform_device = eeepc_wmi_add(); |
1235 | if (IS_ERR(platform_device)) { | |
1236 | err = PTR_ERR(platform_device); | |
1237 | goto fail_eeepc_wmi; | |
45f2c693 YW |
1238 | } |
1239 | ||
45f2c693 YW |
1240 | err = platform_driver_register(&platform_driver); |
1241 | if (err) { | |
1242 | pr_warning("Unable to register platform driver\n"); | |
27c136c8 | 1243 | goto fail_platform_driver; |
ee027e4a YW |
1244 | } |
1245 | ||
1246 | return 0; | |
45f2c693 | 1247 | |
27c136c8 CC |
1248 | fail_platform_driver: |
1249 | eeepc_wmi_remove(platform_device); | |
1250 | fail_eeepc_wmi: | |
45f2c693 | 1251 | return err; |
ee027e4a YW |
1252 | } |
1253 | ||
1254 | static void __exit eeepc_wmi_exit(void) | |
1255 | { | |
27c136c8 | 1256 | eeepc_wmi_remove(platform_device); |
45f2c693 | 1257 | platform_driver_unregister(&platform_driver); |
ee027e4a YW |
1258 | } |
1259 | ||
1260 | module_init(eeepc_wmi_init); | |
1261 | module_exit(eeepc_wmi_exit); |