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Commit | Line | Data |
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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 | 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 |
99 | static bool hotplug_wireless; |
100 | ||
101 | module_param(hotplug_wireless, bool, 0444); | |
102 | MODULE_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 |
107 | static 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 |
132 | struct 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 | */ | |
144 | struct eeepc_wmi_debug { | |
145 | struct dentry *root; | |
146 | u32 dev_id; | |
147 | u32 ctrl_param; | |
148 | }; | |
149 | ||
81248889 | 150 | struct 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 | 176 | static 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 | ||
199 | err_free_keymap: | |
81248889 | 200 | sparse_keymap_free(eeepc->inputdev); |
ee027e4a | 201 | err_free_dev: |
81248889 | 202 | input_free_device(eeepc->inputdev); |
ee027e4a YW |
203 | return err; |
204 | } | |
205 | ||
81248889 YW |
206 | static 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 | 216 | static 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 |
246 | static 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 | 287 | static 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 | ||
303 | static 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 | */ | |
317 | static 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 | ||
328 | static 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 | 339 | static 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 | ||
344 | static 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 | ||
353 | static 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 | ||
380 | static 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 | */ | |
391 | static 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 | ||
400 | static 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 | ||
462 | out_unlock: | |
463 | mutex_unlock(&eeepc->hotplug_lock); | |
464 | } | |
465 | ||
466 | static 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 | ||
483 | static 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 | ||
504 | static 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 | ||
522 | static 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 | ||
534 | static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) | |
535 | { | |
536 | kfree(hotplug_slot->info); | |
537 | kfree(hotplug_slot); | |
538 | } | |
539 | ||
540 | static 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 |
546 | static 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 |
554 | static 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 | ||
594 | error_register: | |
595 | kfree(eeepc->hotplug_slot->info); | |
596 | error_info: | |
597 | kfree(eeepc->hotplug_slot); | |
598 | eeepc->hotplug_slot = NULL; | |
599 | error_slot: | |
279f8f95 CC |
600 | destroy_workqueue(eeepc->hotplug_workqueue); |
601 | error_workqueue: | |
afa7c886 CC |
602 | return ret; |
603 | } | |
604 | ||
ba48fdb9 CC |
605 | /* |
606 | * Rfkill devices | |
607 | */ | |
608 | static 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 | ||
622 | static 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 |
635 | static 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 | ||
653 | static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data) | |
654 | { | |
655 | eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN); | |
656 | } | |
657 | ||
658 | static 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 |
663 | static const struct rfkill_ops eeepc_rfkill_ops = { |
664 | .set_block = eeepc_rfkill_set, | |
665 | .query = eeepc_rfkill_query, | |
666 | }; | |
667 | ||
668 | static 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 | ||
698 | static 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 | ||
735 | static 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 |
790 | exit: |
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 |
803 | static 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 |
813 | static 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 | ||
826 | static 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 | ||
852 | static const struct backlight_ops eeepc_wmi_bl_ops = { | |
853 | .get_brightness = read_brightness, | |
854 | .update_status = update_bl_status, | |
855 | }; | |
856 | ||
857 | static 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 | ||
875 | static 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 | ||
919 | static 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 | ||
927 | static 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 | */ | |
970 | static 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 | ||
979 | static 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 | ||
997 | static 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 | 1028 | EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD); |
9e1565bc CC |
1029 | EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA); |
1030 | EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER); | |
1031 | ||
67fa38ec DT |
1032 | static 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 | ||
1053 | static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv); | |
1054 | ||
4e37b42d CC |
1055 | static 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 |
1063 | static 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 | 1083 | static 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 |
1088 | static 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 | ||
1093 | static 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 | */ | |
1101 | static 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 | ||
1106 | static 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 | */ | |
1114 | struct eeepc_wmi_debugfs_node { | |
1115 | struct eeepc_wmi *eeepc; | |
1116 | char *name; | |
1117 | int (*show)(struct seq_file *m, void *data); | |
1118 | }; | |
1119 | ||
1120 | static 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 | ||
1136 | static 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 | ||
1153 | static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = { | |
1154 | { NULL, "devs", show_devs }, | |
1155 | { NULL, "dsts", show_dsts }, | |
1156 | }; | |
1157 | ||
1158 | static 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 | ||
1165 | static 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 | ||
1173 | static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc) | |
1174 | { | |
1175 | debugfs_remove_recursive(eeepc->debug.root); | |
1176 | } | |
1177 | ||
1178 | static 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 | ||
1214 | error_debugfs: | |
1215 | eeepc_wmi_debugfs_exit(eeepc); | |
1216 | return -ENOMEM; | |
1217 | } | |
1218 | ||
27c136c8 CC |
1219 | /* |
1220 | * WMI Driver | |
1221 | */ | |
afa7c886 CC |
1222 | static 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 | 1244 | static 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 |
1298 | fail_debugfs: |
1299 | wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); | |
27c136c8 | 1300 | fail_wmi_handler: |
3d7b1655 | 1301 | eeepc_wmi_backlight_exit(eeepc); |
27c136c8 | 1302 | fail_backlight: |
ba48fdb9 CC |
1303 | eeepc_wmi_rfkill_exit(eeepc); |
1304 | fail_rfkill: | |
084fca63 CC |
1305 | eeepc_wmi_led_exit(eeepc); |
1306 | fail_leds: | |
45f2c693 | 1307 | eeepc_wmi_input_exit(eeepc); |
27c136c8 CC |
1308 | fail_input: |
1309 | eeepc_wmi_platform_exit(eeepc); | |
1310 | fail_platform: | |
1311 | kfree(eeepc); | |
a04ce290 | 1312 | return err; |
45f2c693 YW |
1313 | } |
1314 | ||
a04ce290 | 1315 | static 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 | */ | |
1335 | static 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 | ||
1354 | static 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 | ||
1379 | static const struct dev_pm_ops eeepc_pm_ops = { | |
1380 | .thaw = eeepc_hotk_thaw, | |
1381 | .restore = eeepc_hotk_restore, | |
1382 | }; | |
1383 | ||
45f2c693 | 1384 | static 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 |
1393 | static 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 | ||
1401 | static 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 | 1414 | static 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 | 1435 | static struct platform_device *platform_device; |
ee027e4a | 1436 | |
a04ce290 CC |
1437 | static 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 | ||
1447 | static 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 | ||
1453 | module_init(eeepc_wmi_init); | |
1454 | module_exit(eeepc_wmi_exit); |