Commit | Line | Data |
---|---|---|
ad8f07cc MG |
1 | /* |
2 | * Driver for Dell laptop extras | |
3 | * | |
4 | * Copyright (c) Red Hat <mjg@redhat.com> | |
6cff8d60 GM |
5 | * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com> |
6 | * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com> | |
ad8f07cc | 7 | * |
6cff8d60 GM |
8 | * Based on documentation in the libsmbios package: |
9 | * Copyright (C) 2005-2014 Dell Inc. | |
ad8f07cc MG |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
eb889524 JP |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
17 | ||
ad8f07cc MG |
18 | #include <linux/module.h> |
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/backlight.h> | |
23 | #include <linux/err.h> | |
24 | #include <linux/dmi.h> | |
25 | #include <linux/io.h> | |
4cc8a574 | 26 | #include <linux/rfkill.h> |
ad8f07cc MG |
27 | #include <linux/power_supply.h> |
28 | #include <linux/acpi.h> | |
116ee77b | 29 | #include <linux/mm.h> |
814cb8ad | 30 | #include <linux/i8042.h> |
037accfa KYL |
31 | #include <linux/debugfs.h> |
32 | #include <linux/seq_file.h> | |
ee4cfe28 | 33 | #include <acpi/video.h> |
f8358578 | 34 | #include "dell-rbtn.h" |
2f9f26bd | 35 | #include "dell-smbios.h" |
ad8f07cc MG |
36 | |
37 | #define BRIGHTNESS_TOKEN 0x7d | |
6cff8d60 GM |
38 | #define KBD_LED_OFF_TOKEN 0x01E1 |
39 | #define KBD_LED_ON_TOKEN 0x01E2 | |
40 | #define KBD_LED_AUTO_TOKEN 0x01E3 | |
41 | #define KBD_LED_AUTO_25_TOKEN 0x02EA | |
42 | #define KBD_LED_AUTO_50_TOKEN 0x02EB | |
43 | #define KBD_LED_AUTO_75_TOKEN 0x02EC | |
44 | #define KBD_LED_AUTO_100_TOKEN 0x02F6 | |
ad8f07cc | 45 | |
2d8b90be AK |
46 | struct quirk_entry { |
47 | u8 touchpad_led; | |
6cff8d60 GM |
48 | |
49 | int needs_kbd_timeouts; | |
50 | /* | |
51 | * Ordered list of timeouts expressed in seconds. | |
52 | * The list must end with -1 | |
53 | */ | |
54 | int kbd_timeouts[]; | |
2d8b90be AK |
55 | }; |
56 | ||
57 | static struct quirk_entry *quirks; | |
58 | ||
59 | static struct quirk_entry quirk_dell_vostro_v130 = { | |
60 | .touchpad_led = 1, | |
61 | }; | |
62 | ||
681480cc | 63 | static int __init dmi_matched(const struct dmi_system_id *dmi) |
2d8b90be AK |
64 | { |
65 | quirks = dmi->driver_data; | |
66 | return 1; | |
67 | } | |
68 | ||
6cff8d60 GM |
69 | /* |
70 | * These values come from Windows utility provided by Dell. If any other value | |
71 | * is used then BIOS silently set timeout to 0 without any error message. | |
72 | */ | |
73 | static struct quirk_entry quirk_dell_xps13_9333 = { | |
74 | .needs_kbd_timeouts = 1, | |
75 | .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 }, | |
76 | }; | |
77 | ||
ada3248a AJ |
78 | static struct platform_driver platform_driver = { |
79 | .driver = { | |
80 | .name = "dell-laptop", | |
ada3248a AJ |
81 | } |
82 | }; | |
83 | ||
84 | static struct platform_device *platform_device; | |
ad8f07cc | 85 | static struct backlight_device *dell_backlight_device; |
4cc8a574 HG |
86 | static struct rfkill *wifi_rfkill; |
87 | static struct rfkill *bluetooth_rfkill; | |
88 | static struct rfkill *wwan_rfkill; | |
8e0e668d HG |
89 | static bool force_rfkill; |
90 | ||
91 | module_param(force_rfkill, bool, 0444); | |
92 | MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models"); | |
ad8f07cc | 93 | |
145047de | 94 | static const struct dmi_system_id dell_device_table[] __initconst = { |
ad8f07cc MG |
95 | { |
96 | .ident = "Dell laptop", | |
97 | .matches = { | |
98 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
99 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
100 | }, | |
101 | }, | |
410d44c7 RK |
102 | { |
103 | .matches = { | |
104 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
105 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/ | |
106 | }, | |
107 | }, | |
cb6a7937 EA |
108 | { |
109 | .ident = "Dell Computer Corporation", | |
110 | .matches = { | |
111 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
112 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
113 | }, | |
114 | }, | |
ad8f07cc MG |
115 | { } |
116 | }; | |
35ae64fe | 117 | MODULE_DEVICE_TABLE(dmi, dell_device_table); |
ad8f07cc | 118 | |
681480cc | 119 | static const struct dmi_system_id dell_quirks[] __initconst = { |
2d8b90be AK |
120 | { |
121 | .callback = dmi_matched, | |
122 | .ident = "Dell Vostro V130", | |
123 | .matches = { | |
124 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
125 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"), | |
126 | }, | |
127 | .driver_data = &quirk_dell_vostro_v130, | |
128 | }, | |
129 | { | |
130 | .callback = dmi_matched, | |
131 | .ident = "Dell Vostro V131", | |
132 | .matches = { | |
133 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
134 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), | |
135 | }, | |
136 | .driver_data = &quirk_dell_vostro_v130, | |
137 | }, | |
57b31b2f AWC |
138 | { |
139 | .callback = dmi_matched, | |
140 | .ident = "Dell Vostro 3350", | |
141 | .matches = { | |
142 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
143 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"), | |
144 | }, | |
145 | .driver_data = &quirk_dell_vostro_v130, | |
146 | }, | |
2a748853 AK |
147 | { |
148 | .callback = dmi_matched, | |
149 | .ident = "Dell Vostro 3555", | |
150 | .matches = { | |
151 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
152 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"), | |
153 | }, | |
154 | .driver_data = &quirk_dell_vostro_v130, | |
155 | }, | |
156 | { | |
157 | .callback = dmi_matched, | |
158 | .ident = "Dell Inspiron N311z", | |
159 | .matches = { | |
160 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
161 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"), | |
162 | }, | |
163 | .driver_data = &quirk_dell_vostro_v130, | |
164 | }, | |
165 | { | |
166 | .callback = dmi_matched, | |
167 | .ident = "Dell Inspiron M5110", | |
168 | .matches = { | |
169 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
170 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"), | |
171 | }, | |
172 | .driver_data = &quirk_dell_vostro_v130, | |
173 | }, | |
7f839228 AK |
174 | { |
175 | .callback = dmi_matched, | |
176 | .ident = "Dell Vostro 3360", | |
177 | .matches = { | |
178 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
179 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"), | |
180 | }, | |
181 | .driver_data = &quirk_dell_vostro_v130, | |
182 | }, | |
183 | { | |
184 | .callback = dmi_matched, | |
185 | .ident = "Dell Vostro 3460", | |
186 | .matches = { | |
187 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
188 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"), | |
189 | }, | |
190 | .driver_data = &quirk_dell_vostro_v130, | |
191 | }, | |
192 | { | |
193 | .callback = dmi_matched, | |
194 | .ident = "Dell Vostro 3560", | |
195 | .matches = { | |
196 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
197 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"), | |
198 | }, | |
199 | .driver_data = &quirk_dell_vostro_v130, | |
200 | }, | |
d0e0a477 AK |
201 | { |
202 | .callback = dmi_matched, | |
203 | .ident = "Dell Vostro 3450", | |
204 | .matches = { | |
205 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
206 | DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"), | |
207 | }, | |
208 | .driver_data = &quirk_dell_vostro_v130, | |
209 | }, | |
5f1e88f4 AK |
210 | { |
211 | .callback = dmi_matched, | |
212 | .ident = "Dell Inspiron 5420", | |
213 | .matches = { | |
214 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 215 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"), |
5f1e88f4 AK |
216 | }, |
217 | .driver_data = &quirk_dell_vostro_v130, | |
218 | }, | |
219 | { | |
220 | .callback = dmi_matched, | |
221 | .ident = "Dell Inspiron 5520", | |
222 | .matches = { | |
223 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 224 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"), |
5f1e88f4 AK |
225 | }, |
226 | .driver_data = &quirk_dell_vostro_v130, | |
227 | }, | |
228 | { | |
229 | .callback = dmi_matched, | |
230 | .ident = "Dell Inspiron 5720", | |
231 | .matches = { | |
232 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 233 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"), |
5f1e88f4 AK |
234 | }, |
235 | .driver_data = &quirk_dell_vostro_v130, | |
236 | }, | |
237 | { | |
238 | .callback = dmi_matched, | |
239 | .ident = "Dell Inspiron 7420", | |
240 | .matches = { | |
241 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 242 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"), |
5f1e88f4 AK |
243 | }, |
244 | .driver_data = &quirk_dell_vostro_v130, | |
245 | }, | |
246 | { | |
247 | .callback = dmi_matched, | |
248 | .ident = "Dell Inspiron 7520", | |
249 | .matches = { | |
250 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 251 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"), |
5f1e88f4 AK |
252 | }, |
253 | .driver_data = &quirk_dell_vostro_v130, | |
254 | }, | |
255 | { | |
256 | .callback = dmi_matched, | |
257 | .ident = "Dell Inspiron 7720", | |
258 | .matches = { | |
259 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 260 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), |
5f1e88f4 AK |
261 | }, |
262 | .driver_data = &quirk_dell_vostro_v130, | |
263 | }, | |
6cff8d60 GM |
264 | { |
265 | .callback = dmi_matched, | |
266 | .ident = "Dell XPS13 9333", | |
267 | .matches = { | |
268 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
269 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"), | |
270 | }, | |
271 | .driver_data = &quirk_dell_xps13_9333, | |
272 | }, | |
d62d421b | 273 | { } |
2d8b90be AK |
274 | }; |
275 | ||
f992efbb PR |
276 | /* |
277 | * Derived from information in smbios-wireless-ctl: | |
278 | * | |
279 | * cbSelect 17, Value 11 | |
280 | * | |
281 | * Return Wireless Info | |
282 | * cbArg1, byte0 = 0x00 | |
283 | * | |
284 | * cbRes1 Standard return codes (0, -1, -2) | |
285 | * cbRes2 Info bit flags: | |
286 | * | |
287 | * 0 Hardware switch supported (1) | |
288 | * 1 WiFi locator supported (1) | |
289 | * 2 WLAN supported (1) | |
290 | * 3 Bluetooth (BT) supported (1) | |
291 | * 4 WWAN supported (1) | |
292 | * 5 Wireless KBD supported (1) | |
293 | * 6 Uw b supported (1) | |
294 | * 7 WiGig supported (1) | |
295 | * 8 WLAN installed (1) | |
296 | * 9 BT installed (1) | |
297 | * 10 WWAN installed (1) | |
298 | * 11 Uw b installed (1) | |
299 | * 12 WiGig installed (1) | |
300 | * 13-15 Reserved (0) | |
301 | * 16 Hardware (HW) switch is On (1) | |
302 | * 17 WLAN disabled (1) | |
303 | * 18 BT disabled (1) | |
304 | * 19 WWAN disabled (1) | |
305 | * 20 Uw b disabled (1) | |
306 | * 21 WiGig disabled (1) | |
307 | * 20-31 Reserved (0) | |
308 | * | |
309 | * cbRes3 NVRAM size in bytes | |
310 | * cbRes4, byte 0 NVRAM format version number | |
311 | * | |
312 | * | |
313 | * Set QuickSet Radio Disable Flag | |
314 | * cbArg1, byte0 = 0x01 | |
315 | * cbArg1, byte1 | |
316 | * Radio ID value: | |
317 | * 0 Radio Status | |
318 | * 1 WLAN ID | |
319 | * 2 BT ID | |
320 | * 3 WWAN ID | |
321 | * 4 UWB ID | |
322 | * 5 WIGIG ID | |
323 | * cbArg1, byte2 Flag bits: | |
324 | * 0 QuickSet disables radio (1) | |
325 | * 1-7 Reserved (0) | |
326 | * | |
327 | * cbRes1 Standard return codes (0, -1, -2) | |
328 | * cbRes2 QuickSet (QS) radio disable bit map: | |
329 | * 0 QS disables WLAN | |
330 | * 1 QS disables BT | |
331 | * 2 QS disables WWAN | |
332 | * 3 QS disables UWB | |
333 | * 4 QS disables WIGIG | |
334 | * 5-31 Reserved (0) | |
335 | * | |
336 | * Wireless Switch Configuration | |
337 | * cbArg1, byte0 = 0x02 | |
338 | * | |
339 | * cbArg1, byte1 | |
340 | * Subcommand: | |
341 | * 0 Get config | |
342 | * 1 Set config | |
343 | * 2 Set WiFi locator enable/disable | |
344 | * cbArg1,byte2 | |
345 | * Switch settings (if byte 1==1): | |
346 | * 0 WLAN sw itch control (1) | |
347 | * 1 BT sw itch control (1) | |
348 | * 2 WWAN sw itch control (1) | |
349 | * 3 UWB sw itch control (1) | |
350 | * 4 WiGig sw itch control (1) | |
351 | * 5-7 Reserved (0) | |
352 | * cbArg1, byte2 Enable bits (if byte 1==2): | |
353 | * 0 Enable WiFi locator (1) | |
354 | * | |
355 | * cbRes1 Standard return codes (0, -1, -2) | |
356 | * cbRes2 QuickSet radio disable bit map: | |
357 | * 0 WLAN controlled by sw itch (1) | |
358 | * 1 BT controlled by sw itch (1) | |
359 | * 2 WWAN controlled by sw itch (1) | |
360 | * 3 UWB controlled by sw itch (1) | |
361 | * 4 WiGig controlled by sw itch (1) | |
362 | * 5-6 Reserved (0) | |
363 | * 7 Wireless sw itch config locked (1) | |
364 | * 8 WiFi locator enabled (1) | |
365 | * 9-14 Reserved (0) | |
366 | * 15 WiFi locator setting locked (1) | |
367 | * 16-31 Reserved (0) | |
368 | * | |
369 | * Read Local Config Data (LCD) | |
370 | * cbArg1, byte0 = 0x10 | |
371 | * cbArg1, byte1 NVRAM index low byte | |
372 | * cbArg1, byte2 NVRAM index high byte | |
373 | * cbRes1 Standard return codes (0, -1, -2) | |
374 | * cbRes2 4 bytes read from LCD[index] | |
375 | * cbRes3 4 bytes read from LCD[index+4] | |
376 | * cbRes4 4 bytes read from LCD[index+8] | |
377 | * | |
378 | * Write Local Config Data (LCD) | |
379 | * cbArg1, byte0 = 0x11 | |
380 | * cbArg1, byte1 NVRAM index low byte | |
381 | * cbArg1, byte2 NVRAM index high byte | |
382 | * cbArg2 4 bytes to w rite at LCD[index] | |
383 | * cbArg3 4 bytes to w rite at LCD[index+4] | |
384 | * cbArg4 4 bytes to w rite at LCD[index+8] | |
385 | * cbRes1 Standard return codes (0, -1, -2) | |
386 | * | |
387 | * Populate Local Config Data from NVRAM | |
388 | * cbArg1, byte0 = 0x12 | |
389 | * cbRes1 Standard return codes (0, -1, -2) | |
390 | * | |
391 | * Commit Local Config Data to NVRAM | |
392 | * cbArg1, byte0 = 0x13 | |
393 | * cbRes1 Standard return codes (0, -1, -2) | |
394 | */ | |
4cc8a574 HG |
395 | |
396 | static int dell_rfkill_set(void *data, bool blocked) | |
397 | { | |
bc2104c2 | 398 | struct calling_interface_buffer *buffer; |
4cc8a574 HG |
399 | int disable = blocked ? 1 : 0; |
400 | unsigned long radio = (unsigned long)data; | |
401 | int hwswitch_bit = (unsigned long)data - 1; | |
22565ba0 PR |
402 | int hwswitch; |
403 | int status; | |
715d0cdd | 404 | int ret; |
4cc8a574 | 405 | |
bc2104c2 | 406 | buffer = dell_smbios_get_buffer(); |
715d0cdd | 407 | |
17070f24 | 408 | dell_smbios_send_request(17, 11); |
715d0cdd | 409 | ret = buffer->output[0]; |
22565ba0 | 410 | status = buffer->output[1]; |
715d0cdd PR |
411 | |
412 | if (ret != 0) | |
413 | goto out; | |
4cc8a574 | 414 | |
b6aa7e18 | 415 | dell_smbios_clear_buffer(); |
22565ba0 PR |
416 | |
417 | buffer->input[0] = 0x2; | |
17070f24 | 418 | dell_smbios_send_request(17, 11); |
22565ba0 PR |
419 | ret = buffer->output[0]; |
420 | hwswitch = buffer->output[1]; | |
421 | ||
4cc8a574 | 422 | /* If the hardware switch controls this radio, and the hardware |
ed112898 | 423 | switch is disabled, always disable the radio */ |
22565ba0 PR |
424 | if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) && |
425 | (status & BIT(0)) && !(status & BIT(16))) | |
ed112898 | 426 | disable = 1; |
4cc8a574 | 427 | |
b6aa7e18 | 428 | dell_smbios_clear_buffer(); |
ced53f6d | 429 | |
4cc8a574 | 430 | buffer->input[0] = (1 | (radio<<8) | (disable << 16)); |
17070f24 | 431 | dell_smbios_send_request(17, 11); |
715d0cdd | 432 | ret = buffer->output[0]; |
4cc8a574 | 433 | |
715d0cdd | 434 | out: |
cb161763 | 435 | dell_smbios_release_buffer(); |
0db2180f | 436 | return dell_smbios_error(ret); |
4cc8a574 HG |
437 | } |
438 | ||
04c9a3a0 | 439 | /* Must be called with the buffer held */ |
33f9359a | 440 | static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, |
bc2104c2 MK |
441 | int status, |
442 | struct calling_interface_buffer *buffer) | |
d038880e | 443 | { |
04c9a3a0 HG |
444 | if (status & BIT(0)) { |
445 | /* Has hw-switch, sync sw_state to BIOS */ | |
446 | int block = rfkill_blocked(rfkill); | |
b6aa7e18 | 447 | dell_smbios_clear_buffer(); |
04c9a3a0 | 448 | buffer->input[0] = (1 | (radio << 8) | (block << 16)); |
17070f24 | 449 | dell_smbios_send_request(17, 11); |
04c9a3a0 | 450 | } else { |
3f56588a HG |
451 | /* No hw-switch, sync BIOS state to sw_state */ |
452 | rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); | |
453 | } | |
33f9359a | 454 | } |
d038880e | 455 | |
33f9359a | 456 | static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio, |
22565ba0 | 457 | int status, int hwswitch) |
33f9359a | 458 | { |
22565ba0 | 459 | if (hwswitch & (BIT(radio - 1))) |
d038880e HG |
460 | rfkill_set_hw_state(rfkill, !(status & BIT(16))); |
461 | } | |
462 | ||
4cc8a574 HG |
463 | static void dell_rfkill_query(struct rfkill *rfkill, void *data) |
464 | { | |
bc2104c2 | 465 | struct calling_interface_buffer *buffer; |
22565ba0 PR |
466 | int radio = ((unsigned long)data & 0xF); |
467 | int hwswitch; | |
4cc8a574 | 468 | int status; |
715d0cdd | 469 | int ret; |
4cc8a574 | 470 | |
bc2104c2 | 471 | buffer = dell_smbios_get_buffer(); |
22565ba0 | 472 | |
17070f24 | 473 | dell_smbios_send_request(17, 11); |
715d0cdd | 474 | ret = buffer->output[0]; |
4cc8a574 | 475 | status = buffer->output[1]; |
22565ba0 PR |
476 | |
477 | if (ret != 0 || !(status & BIT(0))) { | |
cb161763 | 478 | dell_smbios_release_buffer(); |
22565ba0 PR |
479 | return; |
480 | } | |
481 | ||
b6aa7e18 | 482 | dell_smbios_clear_buffer(); |
22565ba0 PR |
483 | |
484 | buffer->input[0] = 0x2; | |
17070f24 | 485 | dell_smbios_send_request(17, 11); |
22565ba0 PR |
486 | ret = buffer->output[0]; |
487 | hwswitch = buffer->output[1]; | |
488 | ||
cb161763 | 489 | dell_smbios_release_buffer(); |
4cc8a574 | 490 | |
715d0cdd PR |
491 | if (ret != 0) |
492 | return; | |
04c9a3a0 | 493 | |
22565ba0 | 494 | dell_rfkill_update_hw_state(rfkill, radio, status, hwswitch); |
4cc8a574 HG |
495 | } |
496 | ||
497 | static const struct rfkill_ops dell_rfkill_ops = { | |
498 | .set_block = dell_rfkill_set, | |
499 | .query = dell_rfkill_query, | |
500 | }; | |
501 | ||
037accfa KYL |
502 | static struct dentry *dell_laptop_dir; |
503 | ||
504 | static int dell_debugfs_show(struct seq_file *s, void *data) | |
505 | { | |
bc2104c2 | 506 | struct calling_interface_buffer *buffer; |
22565ba0 PR |
507 | int hwswitch_state; |
508 | int hwswitch_ret; | |
037accfa | 509 | int status; |
715d0cdd | 510 | int ret; |
037accfa | 511 | |
bc2104c2 | 512 | buffer = dell_smbios_get_buffer(); |
22565ba0 | 513 | |
17070f24 | 514 | dell_smbios_send_request(17, 11); |
715d0cdd | 515 | ret = buffer->output[0]; |
037accfa | 516 | status = buffer->output[1]; |
22565ba0 | 517 | |
b6aa7e18 | 518 | dell_smbios_clear_buffer(); |
22565ba0 PR |
519 | |
520 | buffer->input[0] = 0x2; | |
17070f24 | 521 | dell_smbios_send_request(17, 11); |
22565ba0 PR |
522 | hwswitch_ret = buffer->output[0]; |
523 | hwswitch_state = buffer->output[1]; | |
524 | ||
cb161763 | 525 | dell_smbios_release_buffer(); |
037accfa | 526 | |
715d0cdd | 527 | seq_printf(s, "return:\t%d\n", ret); |
037accfa KYL |
528 | seq_printf(s, "status:\t0x%X\n", status); |
529 | seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n", | |
530 | status & BIT(0)); | |
531 | seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n", | |
532 | (status & BIT(1)) >> 1); | |
533 | seq_printf(s, "Bit 2 : Wifi is supported: %lu\n", | |
534 | (status & BIT(2)) >> 2); | |
535 | seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n", | |
536 | (status & BIT(3)) >> 3); | |
537 | seq_printf(s, "Bit 4 : WWAN is supported: %lu\n", | |
538 | (status & BIT(4)) >> 4); | |
539 | seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", | |
540 | (status & BIT(5)) >> 5); | |
2e19f93f PR |
541 | seq_printf(s, "Bit 6 : UWB supported: %lu\n", |
542 | (status & BIT(6)) >> 6); | |
543 | seq_printf(s, "Bit 7 : WiGig supported: %lu\n", | |
544 | (status & BIT(7)) >> 7); | |
037accfa KYL |
545 | seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", |
546 | (status & BIT(8)) >> 8); | |
547 | seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", | |
548 | (status & BIT(9)) >> 9); | |
549 | seq_printf(s, "Bit 10: WWAN is installed: %lu\n", | |
550 | (status & BIT(10)) >> 10); | |
2e19f93f PR |
551 | seq_printf(s, "Bit 11: UWB installed: %lu\n", |
552 | (status & BIT(11)) >> 11); | |
553 | seq_printf(s, "Bit 12: WiGig installed: %lu\n", | |
554 | (status & BIT(12)) >> 12); | |
555 | ||
037accfa KYL |
556 | seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", |
557 | (status & BIT(16)) >> 16); | |
558 | seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", | |
559 | (status & BIT(17)) >> 17); | |
560 | seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n", | |
561 | (status & BIT(18)) >> 18); | |
562 | seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", | |
563 | (status & BIT(19)) >> 19); | |
2e19f93f PR |
564 | seq_printf(s, "Bit 20: UWB is blocked: %lu\n", |
565 | (status & BIT(20)) >> 20); | |
566 | seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", | |
567 | (status & BIT(21)) >> 21); | |
037accfa | 568 | |
22565ba0 PR |
569 | seq_printf(s, "\nhwswitch_return:\t%d\n", hwswitch_ret); |
570 | seq_printf(s, "hwswitch_state:\t0x%X\n", hwswitch_state); | |
037accfa KYL |
571 | seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", |
572 | hwswitch_state & BIT(0)); | |
573 | seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n", | |
574 | (hwswitch_state & BIT(1)) >> 1); | |
575 | seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", | |
576 | (hwswitch_state & BIT(2)) >> 2); | |
2e19f93f PR |
577 | seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", |
578 | (hwswitch_state & BIT(3)) >> 3); | |
579 | seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", | |
580 | (hwswitch_state & BIT(4)) >> 4); | |
037accfa KYL |
581 | seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", |
582 | (hwswitch_state & BIT(7)) >> 7); | |
583 | seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", | |
584 | (hwswitch_state & BIT(8)) >> 8); | |
585 | seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n", | |
586 | (hwswitch_state & BIT(15)) >> 15); | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static int dell_debugfs_open(struct inode *inode, struct file *file) | |
592 | { | |
593 | return single_open(file, dell_debugfs_show, inode->i_private); | |
594 | } | |
595 | ||
596 | static const struct file_operations dell_debugfs_fops = { | |
597 | .owner = THIS_MODULE, | |
598 | .open = dell_debugfs_open, | |
599 | .read = seq_read, | |
600 | .llseek = seq_lseek, | |
601 | .release = single_release, | |
602 | }; | |
603 | ||
4cc8a574 HG |
604 | static void dell_update_rfkill(struct work_struct *ignored) |
605 | { | |
bc2104c2 | 606 | struct calling_interface_buffer *buffer; |
22565ba0 | 607 | int hwswitch = 0; |
d038880e | 608 | int status; |
715d0cdd | 609 | int ret; |
d038880e | 610 | |
bc2104c2 | 611 | buffer = dell_smbios_get_buffer(); |
715d0cdd | 612 | |
17070f24 | 613 | dell_smbios_send_request(17, 11); |
715d0cdd | 614 | ret = buffer->output[0]; |
d038880e | 615 | status = buffer->output[1]; |
d038880e | 616 | |
715d0cdd PR |
617 | if (ret != 0) |
618 | goto out; | |
619 | ||
b6aa7e18 | 620 | dell_smbios_clear_buffer(); |
22565ba0 PR |
621 | |
622 | buffer->input[0] = 0x2; | |
17070f24 | 623 | dell_smbios_send_request(17, 11); |
22565ba0 PR |
624 | ret = buffer->output[0]; |
625 | ||
626 | if (ret == 0 && (status & BIT(0))) | |
627 | hwswitch = buffer->output[1]; | |
628 | ||
33f9359a | 629 | if (wifi_rfkill) { |
22565ba0 | 630 | dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch); |
bc2104c2 | 631 | dell_rfkill_update_sw_state(wifi_rfkill, 1, status, buffer); |
33f9359a HG |
632 | } |
633 | if (bluetooth_rfkill) { | |
22565ba0 PR |
634 | dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status, |
635 | hwswitch); | |
bc2104c2 MK |
636 | dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status, |
637 | buffer); | |
33f9359a HG |
638 | } |
639 | if (wwan_rfkill) { | |
22565ba0 | 640 | dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch); |
bc2104c2 | 641 | dell_rfkill_update_sw_state(wwan_rfkill, 3, status, buffer); |
33f9359a | 642 | } |
04c9a3a0 | 643 | |
715d0cdd | 644 | out: |
cb161763 | 645 | dell_smbios_release_buffer(); |
4cc8a574 HG |
646 | } |
647 | static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); | |
648 | ||
97f440c2 HG |
649 | static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, |
650 | struct serio *port) | |
651 | { | |
652 | static bool extended; | |
653 | ||
98280374 | 654 | if (str & I8042_STR_AUXDATA) |
97f440c2 HG |
655 | return false; |
656 | ||
657 | if (unlikely(data == 0xe0)) { | |
658 | extended = true; | |
659 | return false; | |
660 | } else if (unlikely(extended)) { | |
661 | switch (data) { | |
662 | case 0x8: | |
663 | schedule_delayed_work(&dell_rfkill_work, | |
664 | round_jiffies_relative(HZ / 4)); | |
665 | break; | |
666 | } | |
667 | extended = false; | |
668 | } | |
669 | ||
670 | return false; | |
671 | } | |
4cc8a574 | 672 | |
f8358578 PR |
673 | static int (*dell_rbtn_notifier_register_func)(struct notifier_block *); |
674 | static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *); | |
675 | ||
676 | static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb, | |
677 | unsigned long action, void *data) | |
678 | { | |
679 | schedule_delayed_work(&dell_rfkill_work, 0); | |
680 | return NOTIFY_OK; | |
681 | } | |
682 | ||
683 | static struct notifier_block dell_laptop_rbtn_notifier = { | |
684 | .notifier_call = dell_laptop_rbtn_notifier_call, | |
685 | }; | |
686 | ||
4cc8a574 HG |
687 | static int __init dell_setup_rfkill(void) |
688 | { | |
bc2104c2 | 689 | struct calling_interface_buffer *buffer; |
ba5194f1 | 690 | int status, ret, whitelisted; |
2a925518 HG |
691 | const char *product; |
692 | ||
693 | /* | |
ba5194f1 HG |
694 | * rfkill support causes trouble on various models, mostly Inspirons. |
695 | * So we whitelist certain series, and don't support rfkill on others. | |
2a925518 | 696 | */ |
ba5194f1 | 697 | whitelisted = 0; |
2a925518 | 698 | product = dmi_get_system_info(DMI_PRODUCT_NAME); |
ba5194f1 HG |
699 | if (product && (strncmp(product, "Latitude", 8) == 0 || |
700 | strncmp(product, "Precision", 9) == 0)) | |
701 | whitelisted = 1; | |
702 | if (!force_rfkill && !whitelisted) | |
4cc8a574 | 703 | return 0; |
4cc8a574 | 704 | |
bc2104c2 | 705 | buffer = dell_smbios_get_buffer(); |
17070f24 | 706 | dell_smbios_send_request(17, 11); |
715d0cdd | 707 | ret = buffer->output[0]; |
4cc8a574 | 708 | status = buffer->output[1]; |
cb161763 | 709 | dell_smbios_release_buffer(); |
4cc8a574 | 710 | |
715d0cdd PR |
711 | /* dell wireless info smbios call is not supported */ |
712 | if (ret != 0) | |
713 | return 0; | |
714 | ||
22565ba0 PR |
715 | /* rfkill is only tested on laptops with a hwswitch */ |
716 | if (!(status & BIT(0)) && !force_rfkill) | |
717 | return 0; | |
2bd4ac13 | 718 | |
4cc8a574 HG |
719 | if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { |
720 | wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, | |
721 | RFKILL_TYPE_WLAN, | |
722 | &dell_rfkill_ops, (void *) 1); | |
723 | if (!wifi_rfkill) { | |
724 | ret = -ENOMEM; | |
725 | goto err_wifi; | |
726 | } | |
727 | ret = rfkill_register(wifi_rfkill); | |
728 | if (ret) | |
729 | goto err_wifi; | |
730 | } | |
731 | ||
732 | if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { | |
733 | bluetooth_rfkill = rfkill_alloc("dell-bluetooth", | |
734 | &platform_device->dev, | |
735 | RFKILL_TYPE_BLUETOOTH, | |
736 | &dell_rfkill_ops, (void *) 2); | |
737 | if (!bluetooth_rfkill) { | |
738 | ret = -ENOMEM; | |
739 | goto err_bluetooth; | |
740 | } | |
741 | ret = rfkill_register(bluetooth_rfkill); | |
742 | if (ret) | |
743 | goto err_bluetooth; | |
744 | } | |
745 | ||
746 | if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { | |
747 | wwan_rfkill = rfkill_alloc("dell-wwan", | |
748 | &platform_device->dev, | |
749 | RFKILL_TYPE_WWAN, | |
750 | &dell_rfkill_ops, (void *) 3); | |
751 | if (!wwan_rfkill) { | |
752 | ret = -ENOMEM; | |
753 | goto err_wwan; | |
754 | } | |
755 | ret = rfkill_register(wwan_rfkill); | |
756 | if (ret) | |
757 | goto err_wwan; | |
758 | } | |
759 | ||
f8358578 PR |
760 | /* |
761 | * Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices | |
762 | * which can receive events from HW slider switch. | |
763 | * | |
764 | * Dell SMBIOS on whitelisted models supports controlling radio devices | |
765 | * but does not support receiving HW button switch events. We can use | |
766 | * i8042 filter hook function to receive keyboard data and handle | |
767 | * keycode for HW button. | |
768 | * | |
769 | * So if it is possible we will use Dell Airplane Mode Switch ACPI | |
770 | * driver for receiving HW events and Dell SMBIOS for setting rfkill | |
771 | * states. If ACPI driver or device is not available we will fallback to | |
772 | * i8042 filter hook function. | |
773 | * | |
774 | * To prevent duplicate rfkill devices which control and do same thing, | |
775 | * dell-rbtn driver will automatically remove its own rfkill devices | |
776 | * once function dell_rbtn_notifier_register() is called. | |
777 | */ | |
778 | ||
779 | dell_rbtn_notifier_register_func = | |
780 | symbol_request(dell_rbtn_notifier_register); | |
781 | if (dell_rbtn_notifier_register_func) { | |
782 | dell_rbtn_notifier_unregister_func = | |
783 | symbol_request(dell_rbtn_notifier_unregister); | |
784 | if (!dell_rbtn_notifier_unregister_func) { | |
785 | symbol_put(dell_rbtn_notifier_register); | |
786 | dell_rbtn_notifier_register_func = NULL; | |
787 | } | |
788 | } | |
789 | ||
790 | if (dell_rbtn_notifier_register_func) { | |
791 | ret = dell_rbtn_notifier_register_func( | |
792 | &dell_laptop_rbtn_notifier); | |
793 | symbol_put(dell_rbtn_notifier_register); | |
794 | dell_rbtn_notifier_register_func = NULL; | |
795 | if (ret != 0) { | |
796 | symbol_put(dell_rbtn_notifier_unregister); | |
797 | dell_rbtn_notifier_unregister_func = NULL; | |
798 | } | |
799 | } else { | |
800 | pr_info("Symbols from dell-rbtn acpi driver are not available\n"); | |
801 | ret = -ENODEV; | |
802 | } | |
803 | ||
804 | if (ret == 0) { | |
805 | pr_info("Using dell-rbtn acpi driver for receiving events\n"); | |
806 | } else if (ret != -ENODEV) { | |
807 | pr_warn("Unable to register dell rbtn notifier\n"); | |
97f440c2 | 808 | goto err_filter; |
f8358578 PR |
809 | } else { |
810 | ret = i8042_install_filter(dell_laptop_i8042_filter); | |
811 | if (ret) { | |
812 | pr_warn("Unable to install key filter\n"); | |
813 | goto err_filter; | |
814 | } | |
815 | pr_info("Using i8042 filter function for receiving events\n"); | |
97f440c2 HG |
816 | } |
817 | ||
4cc8a574 | 818 | return 0; |
97f440c2 HG |
819 | err_filter: |
820 | if (wwan_rfkill) | |
821 | rfkill_unregister(wwan_rfkill); | |
4cc8a574 HG |
822 | err_wwan: |
823 | rfkill_destroy(wwan_rfkill); | |
824 | if (bluetooth_rfkill) | |
825 | rfkill_unregister(bluetooth_rfkill); | |
826 | err_bluetooth: | |
827 | rfkill_destroy(bluetooth_rfkill); | |
828 | if (wifi_rfkill) | |
829 | rfkill_unregister(wifi_rfkill); | |
830 | err_wifi: | |
831 | rfkill_destroy(wifi_rfkill); | |
832 | ||
833 | return ret; | |
834 | } | |
835 | ||
836 | static void dell_cleanup_rfkill(void) | |
837 | { | |
f8358578 PR |
838 | if (dell_rbtn_notifier_unregister_func) { |
839 | dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier); | |
840 | symbol_put(dell_rbtn_notifier_unregister); | |
841 | dell_rbtn_notifier_unregister_func = NULL; | |
842 | } else { | |
843 | i8042_remove_filter(dell_laptop_i8042_filter); | |
844 | } | |
845 | cancel_delayed_work_sync(&dell_rfkill_work); | |
4cc8a574 HG |
846 | if (wifi_rfkill) { |
847 | rfkill_unregister(wifi_rfkill); | |
848 | rfkill_destroy(wifi_rfkill); | |
849 | } | |
850 | if (bluetooth_rfkill) { | |
851 | rfkill_unregister(bluetooth_rfkill); | |
852 | rfkill_destroy(bluetooth_rfkill); | |
853 | } | |
854 | if (wwan_rfkill) { | |
855 | rfkill_unregister(wwan_rfkill); | |
856 | rfkill_destroy(wwan_rfkill); | |
857 | } | |
858 | } | |
859 | ||
ad8f07cc MG |
860 | static int dell_send_intensity(struct backlight_device *bd) |
861 | { | |
bc2104c2 | 862 | struct calling_interface_buffer *buffer; |
f951d6e6 | 863 | struct calling_interface_token *token; |
715d0cdd PR |
864 | int ret; |
865 | ||
f951d6e6 MK |
866 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
867 | if (!token) | |
715d0cdd | 868 | return -ENODEV; |
ad8f07cc | 869 | |
bc2104c2 | 870 | buffer = dell_smbios_get_buffer(); |
f951d6e6 | 871 | buffer->input[0] = token->location; |
116ee77b | 872 | buffer->input[1] = bd->props.brightness; |
ad8f07cc | 873 | |
ad8f07cc | 874 | if (power_supply_is_system_supplied() > 0) |
17070f24 | 875 | dell_smbios_send_request(1, 2); |
ad8f07cc | 876 | else |
17070f24 | 877 | dell_smbios_send_request(1, 1); |
ad8f07cc | 878 | |
0db2180f | 879 | ret = dell_smbios_error(buffer->output[0]); |
715d0cdd | 880 | |
cb161763 | 881 | dell_smbios_release_buffer(); |
7da8fb27 | 882 | return ret; |
ad8f07cc MG |
883 | } |
884 | ||
885 | static int dell_get_intensity(struct backlight_device *bd) | |
886 | { | |
bc2104c2 | 887 | struct calling_interface_buffer *buffer; |
f951d6e6 | 888 | struct calling_interface_token *token; |
715d0cdd | 889 | int ret; |
ad8f07cc | 890 | |
f951d6e6 MK |
891 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
892 | if (!token) | |
715d0cdd | 893 | return -ENODEV; |
ad8f07cc | 894 | |
bc2104c2 | 895 | buffer = dell_smbios_get_buffer(); |
f951d6e6 | 896 | buffer->input[0] = token->location; |
ad8f07cc MG |
897 | |
898 | if (power_supply_is_system_supplied() > 0) | |
17070f24 | 899 | dell_smbios_send_request(0, 2); |
ad8f07cc | 900 | else |
17070f24 | 901 | dell_smbios_send_request(0, 1); |
ad8f07cc | 902 | |
715d0cdd | 903 | if (buffer->output[0]) |
0db2180f | 904 | ret = dell_smbios_error(buffer->output[0]); |
715d0cdd PR |
905 | else |
906 | ret = buffer->output[1]; | |
b486742a | 907 | |
cb161763 | 908 | dell_smbios_release_buffer(); |
b486742a | 909 | return ret; |
ad8f07cc MG |
910 | } |
911 | ||
acc2472e | 912 | static const struct backlight_ops dell_ops = { |
ad8f07cc MG |
913 | .get_brightness = dell_get_intensity, |
914 | .update_status = dell_send_intensity, | |
915 | }; | |
916 | ||
869f8dfa | 917 | static void touchpad_led_on(void) |
2d8b90be AK |
918 | { |
919 | int command = 0x97; | |
920 | char data = 1; | |
921 | i8042_command(&data, command | 1 << 12); | |
922 | } | |
923 | ||
869f8dfa | 924 | static void touchpad_led_off(void) |
2d8b90be AK |
925 | { |
926 | int command = 0x97; | |
927 | char data = 2; | |
928 | i8042_command(&data, command | 1 << 12); | |
929 | } | |
930 | ||
931 | static void touchpad_led_set(struct led_classdev *led_cdev, | |
932 | enum led_brightness value) | |
933 | { | |
934 | if (value > 0) | |
935 | touchpad_led_on(); | |
936 | else | |
937 | touchpad_led_off(); | |
938 | } | |
939 | ||
940 | static struct led_classdev touchpad_led = { | |
941 | .name = "dell-laptop::touchpad", | |
942 | .brightness_set = touchpad_led_set, | |
2d5de9e8 | 943 | .flags = LED_CORE_SUSPENDRESUME, |
2d8b90be AK |
944 | }; |
945 | ||
681480cc | 946 | static int __init touchpad_led_init(struct device *dev) |
2d8b90be AK |
947 | { |
948 | return led_classdev_register(dev, &touchpad_led); | |
949 | } | |
950 | ||
951 | static void touchpad_led_exit(void) | |
952 | { | |
953 | led_classdev_unregister(&touchpad_led); | |
954 | } | |
955 | ||
6cff8d60 GM |
956 | /* |
957 | * Derived from information in smbios-keyboard-ctl: | |
958 | * | |
959 | * cbClass 4 | |
960 | * cbSelect 11 | |
961 | * Keyboard illumination | |
962 | * cbArg1 determines the function to be performed | |
963 | * | |
964 | * cbArg1 0x0 = Get Feature Information | |
965 | * cbRES1 Standard return codes (0, -1, -2) | |
966 | * cbRES2, word0 Bitmap of user-selectable modes | |
967 | * bit 0 Always off (All systems) | |
968 | * bit 1 Always on (Travis ATG, Siberia) | |
969 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
970 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
971 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
972 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
973 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
974 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
975 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
976 | * bits 9-15 Reserved for future use | |
977 | * cbRES2, byte2 Reserved for future use | |
978 | * cbRES2, byte3 Keyboard illumination type | |
979 | * 0 Reserved | |
980 | * 1 Tasklight | |
981 | * 2 Backlight | |
982 | * 3-255 Reserved for future use | |
983 | * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap. | |
984 | * bit 0 Any keystroke | |
985 | * bit 1 Touchpad activity | |
986 | * bit 2 Pointing stick | |
987 | * bit 3 Any mouse | |
988 | * bits 4-7 Reserved for future use | |
989 | * cbRES3, byte1 Supported timeout unit bitmap | |
990 | * bit 0 Seconds | |
991 | * bit 1 Minutes | |
992 | * bit 2 Hours | |
993 | * bit 3 Days | |
994 | * bits 4-7 Reserved for future use | |
995 | * cbRES3, byte2 Number of keyboard light brightness levels | |
996 | * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported). | |
997 | * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported). | |
998 | * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported). | |
999 | * cbRES4, byte3 Maximum acceptable days value (0 if days not supported) | |
1000 | * | |
1001 | * cbArg1 0x1 = Get Current State | |
1002 | * cbRES1 Standard return codes (0, -1, -2) | |
1003 | * cbRES2, word0 Bitmap of current mode state | |
1004 | * bit 0 Always off (All systems) | |
1005 | * bit 1 Always on (Travis ATG, Siberia) | |
1006 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1007 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1008 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1009 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1010 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1011 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1012 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1013 | * bits 9-15 Reserved for future use | |
1014 | * Note: Only One bit can be set | |
1015 | * cbRES2, byte2 Currently active auto keyboard illumination triggers. | |
1016 | * bit 0 Any keystroke | |
1017 | * bit 1 Touchpad activity | |
1018 | * bit 2 Pointing stick | |
1019 | * bit 3 Any mouse | |
1020 | * bits 4-7 Reserved for future use | |
1021 | * cbRES2, byte3 Current Timeout | |
1022 | * bits 7:6 Timeout units indicator: | |
1023 | * 00b Seconds | |
1024 | * 01b Minutes | |
1025 | * 10b Hours | |
1026 | * 11b Days | |
1027 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1028 | * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte | |
1029 | * are set upon return from the [Get feature information] call. | |
1030 | * cbRES3, byte0 Current setting of ALS value that turns the light on or off. | |
1031 | * cbRES3, byte1 Current ALS reading | |
1032 | * cbRES3, byte2 Current keyboard light level. | |
1033 | * | |
1034 | * cbArg1 0x2 = Set New State | |
1035 | * cbRES1 Standard return codes (0, -1, -2) | |
1036 | * cbArg2, word0 Bitmap of current mode state | |
1037 | * bit 0 Always off (All systems) | |
1038 | * bit 1 Always on (Travis ATG, Siberia) | |
1039 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1040 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1041 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1042 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1043 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1044 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1045 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1046 | * bits 9-15 Reserved for future use | |
1047 | * Note: Only One bit can be set | |
1048 | * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow | |
1049 | * keyboard to turn off automatically. | |
1050 | * bit 0 Any keystroke | |
1051 | * bit 1 Touchpad activity | |
1052 | * bit 2 Pointing stick | |
1053 | * bit 3 Any mouse | |
1054 | * bits 4-7 Reserved for future use | |
1055 | * cbArg2, byte3 Desired Timeout | |
1056 | * bits 7:6 Timeout units indicator: | |
1057 | * 00b Seconds | |
1058 | * 01b Minutes | |
1059 | * 10b Hours | |
1060 | * 11b Days | |
1061 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1062 | * cbArg3, byte0 Desired setting of ALS value that turns the light on or off. | |
1063 | * cbArg3, byte2 Desired keyboard light level. | |
1064 | */ | |
1065 | ||
1066 | ||
1067 | enum kbd_timeout_unit { | |
1068 | KBD_TIMEOUT_SECONDS = 0, | |
1069 | KBD_TIMEOUT_MINUTES, | |
1070 | KBD_TIMEOUT_HOURS, | |
1071 | KBD_TIMEOUT_DAYS, | |
1072 | }; | |
1073 | ||
1074 | enum kbd_mode_bit { | |
1075 | KBD_MODE_BIT_OFF = 0, | |
1076 | KBD_MODE_BIT_ON, | |
1077 | KBD_MODE_BIT_ALS, | |
1078 | KBD_MODE_BIT_TRIGGER_ALS, | |
1079 | KBD_MODE_BIT_TRIGGER, | |
1080 | KBD_MODE_BIT_TRIGGER_25, | |
1081 | KBD_MODE_BIT_TRIGGER_50, | |
1082 | KBD_MODE_BIT_TRIGGER_75, | |
1083 | KBD_MODE_BIT_TRIGGER_100, | |
1084 | }; | |
1085 | ||
1086 | #define kbd_is_als_mode_bit(bit) \ | |
1087 | ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS) | |
1088 | #define kbd_is_trigger_mode_bit(bit) \ | |
1089 | ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1090 | #define kbd_is_level_mode_bit(bit) \ | |
1091 | ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1092 | ||
1093 | struct kbd_info { | |
1094 | u16 modes; | |
1095 | u8 type; | |
1096 | u8 triggers; | |
1097 | u8 levels; | |
1098 | u8 seconds; | |
1099 | u8 minutes; | |
1100 | u8 hours; | |
1101 | u8 days; | |
1102 | }; | |
1103 | ||
1104 | struct kbd_state { | |
1105 | u8 mode_bit; | |
1106 | u8 triggers; | |
1107 | u8 timeout_value; | |
1108 | u8 timeout_unit; | |
1109 | u8 als_setting; | |
1110 | u8 als_value; | |
1111 | u8 level; | |
1112 | }; | |
1113 | ||
1114 | static const int kbd_tokens[] = { | |
1115 | KBD_LED_OFF_TOKEN, | |
1116 | KBD_LED_AUTO_25_TOKEN, | |
1117 | KBD_LED_AUTO_50_TOKEN, | |
1118 | KBD_LED_AUTO_75_TOKEN, | |
1119 | KBD_LED_AUTO_100_TOKEN, | |
1120 | KBD_LED_ON_TOKEN, | |
1121 | }; | |
1122 | ||
1123 | static u16 kbd_token_bits; | |
1124 | ||
1125 | static struct kbd_info kbd_info; | |
1126 | static bool kbd_als_supported; | |
1127 | static bool kbd_triggers_supported; | |
1128 | ||
1129 | static u8 kbd_mode_levels[16]; | |
1130 | static int kbd_mode_levels_count; | |
1131 | ||
1132 | static u8 kbd_previous_level; | |
1133 | static u8 kbd_previous_mode_bit; | |
1134 | ||
1135 | static bool kbd_led_present; | |
1136 | ||
1137 | /* | |
1138 | * NOTE: there are three ways to set the keyboard backlight level. | |
1139 | * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value). | |
1140 | * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels). | |
1141 | * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens) | |
1142 | * | |
1143 | * There are laptops which support only one of these methods. If we want to | |
1144 | * support as many machines as possible we need to implement all three methods. | |
1145 | * The first two methods use the kbd_state structure. The third uses SMBIOS | |
1146 | * tokens. If kbd_info.levels == 0, the machine does not support setting the | |
1147 | * keyboard backlight level via kbd_state.level. | |
1148 | */ | |
1149 | ||
1150 | static int kbd_get_info(struct kbd_info *info) | |
1151 | { | |
bc2104c2 | 1152 | struct calling_interface_buffer *buffer; |
6cff8d60 GM |
1153 | u8 units; |
1154 | int ret; | |
1155 | ||
bc2104c2 | 1156 | buffer = dell_smbios_get_buffer(); |
6cff8d60 GM |
1157 | |
1158 | buffer->input[0] = 0x0; | |
17070f24 | 1159 | dell_smbios_send_request(4, 11); |
6cff8d60 GM |
1160 | ret = buffer->output[0]; |
1161 | ||
1162 | if (ret) { | |
0db2180f | 1163 | ret = dell_smbios_error(ret); |
6cff8d60 GM |
1164 | goto out; |
1165 | } | |
1166 | ||
1167 | info->modes = buffer->output[1] & 0xFFFF; | |
1168 | info->type = (buffer->output[1] >> 24) & 0xFF; | |
1169 | info->triggers = buffer->output[2] & 0xFF; | |
1170 | units = (buffer->output[2] >> 8) & 0xFF; | |
1171 | info->levels = (buffer->output[2] >> 16) & 0xFF; | |
1172 | ||
1173 | if (units & BIT(0)) | |
1174 | info->seconds = (buffer->output[3] >> 0) & 0xFF; | |
1175 | if (units & BIT(1)) | |
1176 | info->minutes = (buffer->output[3] >> 8) & 0xFF; | |
1177 | if (units & BIT(2)) | |
1178 | info->hours = (buffer->output[3] >> 16) & 0xFF; | |
1179 | if (units & BIT(3)) | |
1180 | info->days = (buffer->output[3] >> 24) & 0xFF; | |
1181 | ||
1182 | out: | |
cb161763 | 1183 | dell_smbios_release_buffer(); |
6cff8d60 GM |
1184 | return ret; |
1185 | } | |
1186 | ||
1187 | static unsigned int kbd_get_max_level(void) | |
1188 | { | |
1189 | if (kbd_info.levels != 0) | |
1190 | return kbd_info.levels; | |
1191 | if (kbd_mode_levels_count > 0) | |
1192 | return kbd_mode_levels_count - 1; | |
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | static int kbd_get_level(struct kbd_state *state) | |
1197 | { | |
1198 | int i; | |
1199 | ||
1200 | if (kbd_info.levels != 0) | |
1201 | return state->level; | |
1202 | ||
1203 | if (kbd_mode_levels_count > 0) { | |
1204 | for (i = 0; i < kbd_mode_levels_count; ++i) | |
1205 | if (kbd_mode_levels[i] == state->mode_bit) | |
1206 | return i; | |
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | return -EINVAL; | |
1211 | } | |
1212 | ||
1213 | static int kbd_set_level(struct kbd_state *state, u8 level) | |
1214 | { | |
1215 | if (kbd_info.levels != 0) { | |
1216 | if (level != 0) | |
1217 | kbd_previous_level = level; | |
1218 | if (state->level == level) | |
1219 | return 0; | |
1220 | state->level = level; | |
1221 | if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF) | |
1222 | state->mode_bit = kbd_previous_mode_bit; | |
1223 | else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) { | |
1224 | kbd_previous_mode_bit = state->mode_bit; | |
1225 | state->mode_bit = KBD_MODE_BIT_OFF; | |
1226 | } | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) { | |
1231 | if (level != 0) | |
1232 | kbd_previous_level = level; | |
1233 | state->mode_bit = kbd_mode_levels[level]; | |
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | return -EINVAL; | |
1238 | } | |
1239 | ||
1240 | static int kbd_get_state(struct kbd_state *state) | |
1241 | { | |
bc2104c2 | 1242 | struct calling_interface_buffer *buffer; |
6cff8d60 GM |
1243 | int ret; |
1244 | ||
bc2104c2 | 1245 | buffer = dell_smbios_get_buffer(); |
6cff8d60 GM |
1246 | |
1247 | buffer->input[0] = 0x1; | |
17070f24 | 1248 | dell_smbios_send_request(4, 11); |
6cff8d60 GM |
1249 | ret = buffer->output[0]; |
1250 | ||
1251 | if (ret) { | |
0db2180f | 1252 | ret = dell_smbios_error(ret); |
6cff8d60 GM |
1253 | goto out; |
1254 | } | |
1255 | ||
1256 | state->mode_bit = ffs(buffer->output[1] & 0xFFFF); | |
1257 | if (state->mode_bit != 0) | |
1258 | state->mode_bit--; | |
1259 | ||
1260 | state->triggers = (buffer->output[1] >> 16) & 0xFF; | |
1261 | state->timeout_value = (buffer->output[1] >> 24) & 0x3F; | |
1262 | state->timeout_unit = (buffer->output[1] >> 30) & 0x3; | |
1263 | state->als_setting = buffer->output[2] & 0xFF; | |
1264 | state->als_value = (buffer->output[2] >> 8) & 0xFF; | |
1265 | state->level = (buffer->output[2] >> 16) & 0xFF; | |
1266 | ||
1267 | out: | |
cb161763 | 1268 | dell_smbios_release_buffer(); |
6cff8d60 GM |
1269 | return ret; |
1270 | } | |
1271 | ||
1272 | static int kbd_set_state(struct kbd_state *state) | |
1273 | { | |
bc2104c2 | 1274 | struct calling_interface_buffer *buffer; |
6cff8d60 GM |
1275 | int ret; |
1276 | ||
bc2104c2 | 1277 | buffer = dell_smbios_get_buffer(); |
6cff8d60 GM |
1278 | buffer->input[0] = 0x2; |
1279 | buffer->input[1] = BIT(state->mode_bit) & 0xFFFF; | |
1280 | buffer->input[1] |= (state->triggers & 0xFF) << 16; | |
1281 | buffer->input[1] |= (state->timeout_value & 0x3F) << 24; | |
1282 | buffer->input[1] |= (state->timeout_unit & 0x3) << 30; | |
1283 | buffer->input[2] = state->als_setting & 0xFF; | |
1284 | buffer->input[2] |= (state->level & 0xFF) << 16; | |
17070f24 | 1285 | dell_smbios_send_request(4, 11); |
6cff8d60 | 1286 | ret = buffer->output[0]; |
cb161763 | 1287 | dell_smbios_release_buffer(); |
6cff8d60 | 1288 | |
0db2180f | 1289 | return dell_smbios_error(ret); |
6cff8d60 GM |
1290 | } |
1291 | ||
1292 | static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old) | |
1293 | { | |
1294 | int ret; | |
1295 | ||
1296 | ret = kbd_set_state(state); | |
1297 | if (ret == 0) | |
1298 | return 0; | |
1299 | ||
1300 | /* | |
1301 | * When setting the new state fails,try to restore the previous one. | |
1302 | * This is needed on some machines where BIOS sets a default state when | |
1303 | * setting a new state fails. This default state could be all off. | |
1304 | */ | |
1305 | ||
1306 | if (kbd_set_state(old)) | |
1307 | pr_err("Setting old previous keyboard state failed\n"); | |
1308 | ||
1309 | return ret; | |
1310 | } | |
1311 | ||
1312 | static int kbd_set_token_bit(u8 bit) | |
1313 | { | |
bc2104c2 | 1314 | struct calling_interface_buffer *buffer; |
63c4029b | 1315 | struct calling_interface_token *token; |
6cff8d60 GM |
1316 | int ret; |
1317 | ||
1318 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1319 | return -EINVAL; | |
1320 | ||
63c4029b MK |
1321 | token = dell_smbios_find_token(kbd_tokens[bit]); |
1322 | if (!token) | |
6cff8d60 GM |
1323 | return -EINVAL; |
1324 | ||
bc2104c2 | 1325 | buffer = dell_smbios_get_buffer(); |
63c4029b MK |
1326 | buffer->input[0] = token->location; |
1327 | buffer->input[1] = token->value; | |
17070f24 | 1328 | dell_smbios_send_request(1, 0); |
6cff8d60 | 1329 | ret = buffer->output[0]; |
cb161763 | 1330 | dell_smbios_release_buffer(); |
6cff8d60 | 1331 | |
0db2180f | 1332 | return dell_smbios_error(ret); |
6cff8d60 GM |
1333 | } |
1334 | ||
1335 | static int kbd_get_token_bit(u8 bit) | |
1336 | { | |
bc2104c2 | 1337 | struct calling_interface_buffer *buffer; |
63c4029b | 1338 | struct calling_interface_token *token; |
6cff8d60 GM |
1339 | int ret; |
1340 | int val; | |
1341 | ||
1342 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1343 | return -EINVAL; | |
1344 | ||
63c4029b MK |
1345 | token = dell_smbios_find_token(kbd_tokens[bit]); |
1346 | if (!token) | |
6cff8d60 GM |
1347 | return -EINVAL; |
1348 | ||
bc2104c2 | 1349 | buffer = dell_smbios_get_buffer(); |
63c4029b | 1350 | buffer->input[0] = token->location; |
17070f24 | 1351 | dell_smbios_send_request(0, 0); |
6cff8d60 GM |
1352 | ret = buffer->output[0]; |
1353 | val = buffer->output[1]; | |
cb161763 | 1354 | dell_smbios_release_buffer(); |
6cff8d60 GM |
1355 | |
1356 | if (ret) | |
0db2180f | 1357 | return dell_smbios_error(ret); |
6cff8d60 | 1358 | |
63c4029b | 1359 | return (val == token->value); |
6cff8d60 GM |
1360 | } |
1361 | ||
1362 | static int kbd_get_first_active_token_bit(void) | |
1363 | { | |
1364 | int i; | |
1365 | int ret; | |
1366 | ||
1367 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) { | |
1368 | ret = kbd_get_token_bit(i); | |
1369 | if (ret == 1) | |
1370 | return i; | |
1371 | } | |
1372 | ||
1373 | return ret; | |
1374 | } | |
1375 | ||
1376 | static int kbd_get_valid_token_counts(void) | |
1377 | { | |
1378 | return hweight16(kbd_token_bits); | |
1379 | } | |
1380 | ||
1381 | static inline int kbd_init_info(void) | |
1382 | { | |
1383 | struct kbd_state state; | |
1384 | int ret; | |
1385 | int i; | |
1386 | ||
1387 | ret = kbd_get_info(&kbd_info); | |
1388 | if (ret) | |
1389 | return ret; | |
1390 | ||
1391 | kbd_get_state(&state); | |
1392 | ||
1393 | /* NOTE: timeout value is stored in 6 bits so max value is 63 */ | |
1394 | if (kbd_info.seconds > 63) | |
1395 | kbd_info.seconds = 63; | |
1396 | if (kbd_info.minutes > 63) | |
1397 | kbd_info.minutes = 63; | |
1398 | if (kbd_info.hours > 63) | |
1399 | kbd_info.hours = 63; | |
1400 | if (kbd_info.days > 63) | |
1401 | kbd_info.days = 63; | |
1402 | ||
1403 | /* NOTE: On tested machines ON mode did not work and caused | |
1404 | * problems (turned backlight off) so do not use it | |
1405 | */ | |
1406 | kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON); | |
1407 | ||
1408 | kbd_previous_level = kbd_get_level(&state); | |
1409 | kbd_previous_mode_bit = state.mode_bit; | |
1410 | ||
1411 | if (kbd_previous_level == 0 && kbd_get_max_level() != 0) | |
1412 | kbd_previous_level = 1; | |
1413 | ||
1414 | if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) { | |
1415 | kbd_previous_mode_bit = | |
1416 | ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF)); | |
1417 | if (kbd_previous_mode_bit != 0) | |
1418 | kbd_previous_mode_bit--; | |
1419 | } | |
1420 | ||
1421 | if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) | | |
1422 | BIT(KBD_MODE_BIT_TRIGGER_ALS))) | |
1423 | kbd_als_supported = true; | |
1424 | ||
1425 | if (kbd_info.modes & ( | |
1426 | BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) | | |
1427 | BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) | | |
1428 | BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100) | |
1429 | )) | |
1430 | kbd_triggers_supported = true; | |
1431 | ||
1432 | /* kbd_mode_levels[0] is reserved, see below */ | |
1433 | for (i = 0; i < 16; ++i) | |
1434 | if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes)) | |
1435 | kbd_mode_levels[1 + kbd_mode_levels_count++] = i; | |
1436 | ||
1437 | /* | |
1438 | * Find the first supported mode and assign to kbd_mode_levels[0]. | |
1439 | * This should be 0 (off), but we cannot depend on the BIOS to | |
1440 | * support 0. | |
1441 | */ | |
1442 | if (kbd_mode_levels_count > 0) { | |
1443 | for (i = 0; i < 16; ++i) { | |
1444 | if (BIT(i) & kbd_info.modes) { | |
1445 | kbd_mode_levels[0] = i; | |
1446 | break; | |
1447 | } | |
1448 | } | |
1449 | kbd_mode_levels_count++; | |
1450 | } | |
1451 | ||
1452 | return 0; | |
1453 | ||
1454 | } | |
1455 | ||
1456 | static inline void kbd_init_tokens(void) | |
1457 | { | |
1458 | int i; | |
1459 | ||
1460 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) | |
63c4029b | 1461 | if (dell_smbios_find_token(kbd_tokens[i])) |
6cff8d60 GM |
1462 | kbd_token_bits |= BIT(i); |
1463 | } | |
1464 | ||
1465 | static void kbd_init(void) | |
1466 | { | |
1467 | int ret; | |
1468 | ||
1469 | ret = kbd_init_info(); | |
1470 | kbd_init_tokens(); | |
1471 | ||
1472 | if (kbd_token_bits != 0 || ret == 0) | |
1473 | kbd_led_present = true; | |
1474 | } | |
1475 | ||
1476 | static ssize_t kbd_led_timeout_store(struct device *dev, | |
1477 | struct device_attribute *attr, | |
1478 | const char *buf, size_t count) | |
1479 | { | |
1480 | struct kbd_state new_state; | |
1481 | struct kbd_state state; | |
1482 | bool convert; | |
1483 | int value; | |
1484 | int ret; | |
1485 | char ch; | |
1486 | u8 unit; | |
1487 | int i; | |
1488 | ||
1489 | ret = sscanf(buf, "%d %c", &value, &ch); | |
1490 | if (ret < 1) | |
1491 | return -EINVAL; | |
1492 | else if (ret == 1) | |
1493 | ch = 's'; | |
1494 | ||
1495 | if (value < 0) | |
1496 | return -EINVAL; | |
1497 | ||
1498 | convert = false; | |
1499 | ||
1500 | switch (ch) { | |
1501 | case 's': | |
1502 | if (value > kbd_info.seconds) | |
1503 | convert = true; | |
1504 | unit = KBD_TIMEOUT_SECONDS; | |
1505 | break; | |
1506 | case 'm': | |
1507 | if (value > kbd_info.minutes) | |
1508 | convert = true; | |
1509 | unit = KBD_TIMEOUT_MINUTES; | |
1510 | break; | |
1511 | case 'h': | |
1512 | if (value > kbd_info.hours) | |
1513 | convert = true; | |
1514 | unit = KBD_TIMEOUT_HOURS; | |
1515 | break; | |
1516 | case 'd': | |
1517 | if (value > kbd_info.days) | |
1518 | convert = true; | |
1519 | unit = KBD_TIMEOUT_DAYS; | |
1520 | break; | |
1521 | default: | |
1522 | return -EINVAL; | |
1523 | } | |
1524 | ||
1525 | if (quirks && quirks->needs_kbd_timeouts) | |
1526 | convert = true; | |
1527 | ||
1528 | if (convert) { | |
1529 | /* Convert value from current units to seconds */ | |
1530 | switch (unit) { | |
1531 | case KBD_TIMEOUT_DAYS: | |
1532 | value *= 24; | |
1533 | case KBD_TIMEOUT_HOURS: | |
1534 | value *= 60; | |
1535 | case KBD_TIMEOUT_MINUTES: | |
1536 | value *= 60; | |
1537 | unit = KBD_TIMEOUT_SECONDS; | |
1538 | } | |
1539 | ||
1540 | if (quirks && quirks->needs_kbd_timeouts) { | |
1541 | for (i = 0; quirks->kbd_timeouts[i] != -1; i++) { | |
1542 | if (value <= quirks->kbd_timeouts[i]) { | |
1543 | value = quirks->kbd_timeouts[i]; | |
1544 | break; | |
1545 | } | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | if (value <= kbd_info.seconds && kbd_info.seconds) { | |
1550 | unit = KBD_TIMEOUT_SECONDS; | |
1551 | } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) { | |
1552 | value /= 60; | |
1553 | unit = KBD_TIMEOUT_MINUTES; | |
1554 | } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) { | |
1555 | value /= (60 * 60); | |
1556 | unit = KBD_TIMEOUT_HOURS; | |
1557 | } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) { | |
1558 | value /= (60 * 60 * 24); | |
1559 | unit = KBD_TIMEOUT_DAYS; | |
1560 | } else { | |
1561 | return -EINVAL; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | ret = kbd_get_state(&state); | |
1566 | if (ret) | |
1567 | return ret; | |
1568 | ||
1569 | new_state = state; | |
1570 | new_state.timeout_value = value; | |
1571 | new_state.timeout_unit = unit; | |
1572 | ||
1573 | ret = kbd_set_state_safe(&new_state, &state); | |
1574 | if (ret) | |
1575 | return ret; | |
1576 | ||
1577 | return count; | |
1578 | } | |
1579 | ||
1580 | static ssize_t kbd_led_timeout_show(struct device *dev, | |
1581 | struct device_attribute *attr, char *buf) | |
1582 | { | |
1583 | struct kbd_state state; | |
1584 | int ret; | |
1585 | int len; | |
1586 | ||
1587 | ret = kbd_get_state(&state); | |
1588 | if (ret) | |
1589 | return ret; | |
1590 | ||
1591 | len = sprintf(buf, "%d", state.timeout_value); | |
1592 | ||
1593 | switch (state.timeout_unit) { | |
1594 | case KBD_TIMEOUT_SECONDS: | |
1595 | return len + sprintf(buf+len, "s\n"); | |
1596 | case KBD_TIMEOUT_MINUTES: | |
1597 | return len + sprintf(buf+len, "m\n"); | |
1598 | case KBD_TIMEOUT_HOURS: | |
1599 | return len + sprintf(buf+len, "h\n"); | |
1600 | case KBD_TIMEOUT_DAYS: | |
1601 | return len + sprintf(buf+len, "d\n"); | |
1602 | default: | |
1603 | return -EINVAL; | |
1604 | } | |
1605 | ||
1606 | return len; | |
1607 | } | |
1608 | ||
1609 | static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR, | |
1610 | kbd_led_timeout_show, kbd_led_timeout_store); | |
1611 | ||
1612 | static const char * const kbd_led_triggers[] = { | |
1613 | "keyboard", | |
1614 | "touchpad", | |
1615 | /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */ | |
1616 | "mouse", | |
1617 | }; | |
1618 | ||
1619 | static ssize_t kbd_led_triggers_store(struct device *dev, | |
1620 | struct device_attribute *attr, | |
1621 | const char *buf, size_t count) | |
1622 | { | |
1623 | struct kbd_state new_state; | |
1624 | struct kbd_state state; | |
1625 | bool triggers_enabled = false; | |
1626 | int trigger_bit = -1; | |
1627 | char trigger[21]; | |
1628 | int i, ret; | |
1629 | ||
1630 | ret = sscanf(buf, "%20s", trigger); | |
1631 | if (ret != 1) | |
1632 | return -EINVAL; | |
1633 | ||
1634 | if (trigger[0] != '+' && trigger[0] != '-') | |
1635 | return -EINVAL; | |
1636 | ||
1637 | ret = kbd_get_state(&state); | |
1638 | if (ret) | |
1639 | return ret; | |
1640 | ||
1641 | if (kbd_triggers_supported) | |
1642 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1643 | ||
1644 | if (kbd_triggers_supported) { | |
1645 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1646 | if (!(kbd_info.triggers & BIT(i))) | |
1647 | continue; | |
1648 | if (!kbd_led_triggers[i]) | |
1649 | continue; | |
1650 | if (strcmp(trigger+1, kbd_led_triggers[i]) != 0) | |
1651 | continue; | |
1652 | if (trigger[0] == '+' && | |
1653 | triggers_enabled && (state.triggers & BIT(i))) | |
1654 | return count; | |
1655 | if (trigger[0] == '-' && | |
1656 | (!triggers_enabled || !(state.triggers & BIT(i)))) | |
1657 | return count; | |
1658 | trigger_bit = i; | |
1659 | break; | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | if (trigger_bit != -1) { | |
1664 | new_state = state; | |
1665 | if (trigger[0] == '+') | |
1666 | new_state.triggers |= BIT(trigger_bit); | |
1667 | else { | |
1668 | new_state.triggers &= ~BIT(trigger_bit); | |
1669 | /* NOTE: trackstick bit (2) must be disabled when | |
1670 | * disabling touchpad bit (1), otherwise touchpad | |
1671 | * bit (1) will not be disabled */ | |
1672 | if (trigger_bit == 1) | |
1673 | new_state.triggers &= ~BIT(2); | |
1674 | } | |
1675 | if ((kbd_info.triggers & new_state.triggers) != | |
1676 | new_state.triggers) | |
1677 | return -EINVAL; | |
1678 | if (new_state.triggers && !triggers_enabled) { | |
1679 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1680 | kbd_set_level(&new_state, kbd_previous_level); | |
1681 | } else if (new_state.triggers == 0) { | |
1682 | kbd_set_level(&new_state, 0); | |
1683 | } | |
1684 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1685 | return -EINVAL; | |
1686 | ret = kbd_set_state_safe(&new_state, &state); | |
1687 | if (ret) | |
1688 | return ret; | |
1689 | if (new_state.mode_bit != KBD_MODE_BIT_OFF) | |
1690 | kbd_previous_mode_bit = new_state.mode_bit; | |
1691 | return count; | |
1692 | } | |
1693 | ||
1694 | return -EINVAL; | |
1695 | } | |
1696 | ||
1697 | static ssize_t kbd_led_triggers_show(struct device *dev, | |
1698 | struct device_attribute *attr, char *buf) | |
1699 | { | |
1700 | struct kbd_state state; | |
1701 | bool triggers_enabled; | |
1702 | int level, i, ret; | |
1703 | int len = 0; | |
1704 | ||
1705 | ret = kbd_get_state(&state); | |
1706 | if (ret) | |
1707 | return ret; | |
1708 | ||
1709 | len = 0; | |
1710 | ||
1711 | if (kbd_triggers_supported) { | |
1712 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1713 | level = kbd_get_level(&state); | |
1714 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1715 | if (!(kbd_info.triggers & BIT(i))) | |
1716 | continue; | |
1717 | if (!kbd_led_triggers[i]) | |
1718 | continue; | |
1719 | if ((triggers_enabled || level <= 0) && | |
1720 | (state.triggers & BIT(i))) | |
1721 | buf[len++] = '+'; | |
1722 | else | |
1723 | buf[len++] = '-'; | |
1724 | len += sprintf(buf+len, "%s ", kbd_led_triggers[i]); | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | if (len) | |
1729 | buf[len - 1] = '\n'; | |
1730 | ||
1731 | return len; | |
1732 | } | |
1733 | ||
1734 | static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR, | |
1735 | kbd_led_triggers_show, kbd_led_triggers_store); | |
1736 | ||
1737 | static ssize_t kbd_led_als_enabled_store(struct device *dev, | |
1738 | struct device_attribute *attr, | |
1739 | const char *buf, size_t count) | |
1740 | { | |
1741 | struct kbd_state new_state; | |
1742 | struct kbd_state state; | |
1743 | bool triggers_enabled = false; | |
1744 | int enable; | |
1745 | int ret; | |
1746 | ||
1747 | ret = kstrtoint(buf, 0, &enable); | |
1748 | if (ret) | |
1749 | return ret; | |
1750 | ||
1751 | ret = kbd_get_state(&state); | |
1752 | if (ret) | |
1753 | return ret; | |
1754 | ||
1755 | if (enable == kbd_is_als_mode_bit(state.mode_bit)) | |
1756 | return count; | |
1757 | ||
1758 | new_state = state; | |
1759 | ||
1760 | if (kbd_triggers_supported) | |
1761 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1762 | ||
1763 | if (enable) { | |
1764 | if (triggers_enabled) | |
1765 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS; | |
1766 | else | |
1767 | new_state.mode_bit = KBD_MODE_BIT_ALS; | |
1768 | } else { | |
1769 | if (triggers_enabled) { | |
1770 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1771 | kbd_set_level(&new_state, kbd_previous_level); | |
1772 | } else { | |
1773 | new_state.mode_bit = KBD_MODE_BIT_ON; | |
1774 | } | |
1775 | } | |
1776 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1777 | return -EINVAL; | |
1778 | ||
1779 | ret = kbd_set_state_safe(&new_state, &state); | |
1780 | if (ret) | |
1781 | return ret; | |
1782 | kbd_previous_mode_bit = new_state.mode_bit; | |
1783 | ||
1784 | return count; | |
1785 | } | |
1786 | ||
1787 | static ssize_t kbd_led_als_enabled_show(struct device *dev, | |
1788 | struct device_attribute *attr, | |
1789 | char *buf) | |
1790 | { | |
1791 | struct kbd_state state; | |
1792 | bool enabled = false; | |
1793 | int ret; | |
1794 | ||
1795 | ret = kbd_get_state(&state); | |
1796 | if (ret) | |
1797 | return ret; | |
1798 | enabled = kbd_is_als_mode_bit(state.mode_bit); | |
1799 | ||
1800 | return sprintf(buf, "%d\n", enabled ? 1 : 0); | |
1801 | } | |
1802 | ||
1803 | static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR, | |
1804 | kbd_led_als_enabled_show, kbd_led_als_enabled_store); | |
1805 | ||
1806 | static ssize_t kbd_led_als_setting_store(struct device *dev, | |
1807 | struct device_attribute *attr, | |
1808 | const char *buf, size_t count) | |
1809 | { | |
1810 | struct kbd_state state; | |
1811 | struct kbd_state new_state; | |
1812 | u8 setting; | |
1813 | int ret; | |
1814 | ||
1815 | ret = kstrtou8(buf, 10, &setting); | |
1816 | if (ret) | |
1817 | return ret; | |
1818 | ||
1819 | ret = kbd_get_state(&state); | |
1820 | if (ret) | |
1821 | return ret; | |
1822 | ||
1823 | new_state = state; | |
1824 | new_state.als_setting = setting; | |
1825 | ||
1826 | ret = kbd_set_state_safe(&new_state, &state); | |
1827 | if (ret) | |
1828 | return ret; | |
1829 | ||
1830 | return count; | |
1831 | } | |
1832 | ||
1833 | static ssize_t kbd_led_als_setting_show(struct device *dev, | |
1834 | struct device_attribute *attr, | |
1835 | char *buf) | |
1836 | { | |
1837 | struct kbd_state state; | |
1838 | int ret; | |
1839 | ||
1840 | ret = kbd_get_state(&state); | |
1841 | if (ret) | |
1842 | return ret; | |
1843 | ||
1844 | return sprintf(buf, "%d\n", state.als_setting); | |
1845 | } | |
1846 | ||
1847 | static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR, | |
1848 | kbd_led_als_setting_show, kbd_led_als_setting_store); | |
1849 | ||
1850 | static struct attribute *kbd_led_attrs[] = { | |
1851 | &dev_attr_stop_timeout.attr, | |
1852 | &dev_attr_start_triggers.attr, | |
1853 | NULL, | |
1854 | }; | |
1855 | ||
1856 | static const struct attribute_group kbd_led_group = { | |
1857 | .attrs = kbd_led_attrs, | |
1858 | }; | |
1859 | ||
1860 | static struct attribute *kbd_led_als_attrs[] = { | |
1861 | &dev_attr_als_enabled.attr, | |
1862 | &dev_attr_als_setting.attr, | |
1863 | NULL, | |
1864 | }; | |
1865 | ||
1866 | static const struct attribute_group kbd_led_als_group = { | |
1867 | .attrs = kbd_led_als_attrs, | |
1868 | }; | |
1869 | ||
1870 | static const struct attribute_group *kbd_led_groups[] = { | |
1871 | &kbd_led_group, | |
1872 | &kbd_led_als_group, | |
1873 | NULL, | |
1874 | }; | |
1875 | ||
1876 | static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev) | |
1877 | { | |
1878 | int ret; | |
1879 | u16 num; | |
1880 | struct kbd_state state; | |
1881 | ||
1882 | if (kbd_get_max_level()) { | |
1883 | ret = kbd_get_state(&state); | |
1884 | if (ret) | |
1885 | return 0; | |
1886 | ret = kbd_get_level(&state); | |
1887 | if (ret < 0) | |
1888 | return 0; | |
1889 | return ret; | |
1890 | } | |
1891 | ||
1892 | if (kbd_get_valid_token_counts()) { | |
1893 | ret = kbd_get_first_active_token_bit(); | |
1894 | if (ret < 0) | |
1895 | return 0; | |
1896 | for (num = kbd_token_bits; num != 0 && ret > 0; --ret) | |
1897 | num &= num - 1; /* clear the first bit set */ | |
1898 | if (num == 0) | |
1899 | return 0; | |
1900 | return ffs(num) - 1; | |
1901 | } | |
1902 | ||
1903 | pr_warn("Keyboard brightness level control not supported\n"); | |
1904 | return 0; | |
1905 | } | |
1906 | ||
1907 | static void kbd_led_level_set(struct led_classdev *led_cdev, | |
1908 | enum led_brightness value) | |
1909 | { | |
1910 | struct kbd_state state; | |
1911 | struct kbd_state new_state; | |
1912 | u16 num; | |
1913 | ||
1914 | if (kbd_get_max_level()) { | |
1915 | if (kbd_get_state(&state)) | |
1916 | return; | |
1917 | new_state = state; | |
1918 | if (kbd_set_level(&new_state, value)) | |
1919 | return; | |
1920 | kbd_set_state_safe(&new_state, &state); | |
1921 | return; | |
1922 | } | |
1923 | ||
1924 | if (kbd_get_valid_token_counts()) { | |
1925 | for (num = kbd_token_bits; num != 0 && value > 0; --value) | |
1926 | num &= num - 1; /* clear the first bit set */ | |
1927 | if (num == 0) | |
1928 | return; | |
1929 | kbd_set_token_bit(ffs(num) - 1); | |
1930 | return; | |
1931 | } | |
1932 | ||
1933 | pr_warn("Keyboard brightness level control not supported\n"); | |
1934 | } | |
1935 | ||
1936 | static struct led_classdev kbd_led = { | |
1937 | .name = "dell::kbd_backlight", | |
1938 | .brightness_set = kbd_led_level_set, | |
1939 | .brightness_get = kbd_led_level_get, | |
1940 | .groups = kbd_led_groups, | |
1941 | }; | |
1942 | ||
1943 | static int __init kbd_led_init(struct device *dev) | |
1944 | { | |
1945 | kbd_init(); | |
1946 | if (!kbd_led_present) | |
1947 | return -ENODEV; | |
1948 | if (!kbd_als_supported) | |
1949 | kbd_led_groups[1] = NULL; | |
1950 | kbd_led.max_brightness = kbd_get_max_level(); | |
1951 | if (!kbd_led.max_brightness) { | |
1952 | kbd_led.max_brightness = kbd_get_valid_token_counts(); | |
1953 | if (kbd_led.max_brightness) | |
1954 | kbd_led.max_brightness--; | |
1955 | } | |
1956 | return led_classdev_register(dev, &kbd_led); | |
1957 | } | |
1958 | ||
1959 | static void brightness_set_exit(struct led_classdev *led_cdev, | |
1960 | enum led_brightness value) | |
1961 | { | |
1962 | /* Don't change backlight level on exit */ | |
1963 | }; | |
1964 | ||
1965 | static void kbd_led_exit(void) | |
1966 | { | |
1967 | if (!kbd_led_present) | |
1968 | return; | |
1969 | kbd_led.brightness_set = brightness_set_exit; | |
1970 | led_classdev_unregister(&kbd_led); | |
1971 | } | |
1972 | ||
ad8f07cc MG |
1973 | static int __init dell_init(void) |
1974 | { | |
bc2104c2 | 1975 | struct calling_interface_buffer *buffer; |
f951d6e6 | 1976 | struct calling_interface_token *token; |
ad8f07cc MG |
1977 | int max_intensity = 0; |
1978 | int ret; | |
1979 | ||
1980 | if (!dmi_check_system(dell_device_table)) | |
1981 | return -ENODEV; | |
1982 | ||
2d8b90be AK |
1983 | quirks = NULL; |
1984 | /* find if this machine support other functions */ | |
1985 | dmi_check_system(dell_quirks); | |
1986 | ||
ada3248a AJ |
1987 | ret = platform_driver_register(&platform_driver); |
1988 | if (ret) | |
1989 | goto fail_platform_driver; | |
1990 | platform_device = platform_device_alloc("dell-laptop", -1); | |
1991 | if (!platform_device) { | |
1992 | ret = -ENOMEM; | |
1993 | goto fail_platform_device1; | |
1994 | } | |
1995 | ret = platform_device_add(platform_device); | |
1996 | if (ret) | |
1997 | goto fail_platform_device2; | |
1998 | ||
4cc8a574 HG |
1999 | ret = dell_setup_rfkill(); |
2000 | ||
2001 | if (ret) { | |
2002 | pr_warn("Unable to setup rfkill\n"); | |
2003 | goto fail_rfkill; | |
2004 | } | |
2005 | ||
2d8b90be AK |
2006 | if (quirks && quirks->touchpad_led) |
2007 | touchpad_led_init(&platform_device->dev); | |
2008 | ||
6cff8d60 GM |
2009 | kbd_led_init(&platform_device->dev); |
2010 | ||
037accfa | 2011 | dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL); |
4cc8a574 HG |
2012 | if (dell_laptop_dir != NULL) |
2013 | debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL, | |
2014 | &dell_debugfs_fops); | |
037accfa | 2015 | |
ee4cfe28 | 2016 | if (acpi_video_get_backlight_type() != acpi_backlight_vendor) |
ad8f07cc | 2017 | return 0; |
ad8f07cc | 2018 | |
f951d6e6 MK |
2019 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
2020 | if (token) { | |
bc2104c2 | 2021 | buffer = dell_smbios_get_buffer(); |
f951d6e6 | 2022 | buffer->input[0] = token->location; |
17070f24 | 2023 | dell_smbios_send_request(0, 2); |
715d0cdd PR |
2024 | if (buffer->output[0] == 0) |
2025 | max_intensity = buffer->output[3]; | |
cb161763 | 2026 | dell_smbios_release_buffer(); |
ad8f07cc MG |
2027 | } |
2028 | ||
2029 | if (max_intensity) { | |
a19a6ee6 MG |
2030 | struct backlight_properties props; |
2031 | memset(&props, 0, sizeof(struct backlight_properties)); | |
bb7ca747 | 2032 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 MG |
2033 | props.max_brightness = max_intensity; |
2034 | dell_backlight_device = backlight_device_register("dell_backlight", | |
2035 | &platform_device->dev, | |
2036 | NULL, | |
2037 | &dell_ops, | |
2038 | &props); | |
ad8f07cc MG |
2039 | |
2040 | if (IS_ERR(dell_backlight_device)) { | |
2041 | ret = PTR_ERR(dell_backlight_device); | |
2042 | dell_backlight_device = NULL; | |
71e9dc73 | 2043 | goto fail_backlight; |
ad8f07cc MG |
2044 | } |
2045 | ||
ad8f07cc MG |
2046 | dell_backlight_device->props.brightness = |
2047 | dell_get_intensity(dell_backlight_device); | |
2048 | backlight_update_status(dell_backlight_device); | |
2049 | } | |
2050 | ||
2051 | return 0; | |
71e9dc73 AJ |
2052 | |
2053 | fail_backlight: | |
4cc8a574 HG |
2054 | dell_cleanup_rfkill(); |
2055 | fail_rfkill: | |
ada3248a AJ |
2056 | platform_device_del(platform_device); |
2057 | fail_platform_device2: | |
2058 | platform_device_put(platform_device); | |
2059 | fail_platform_device1: | |
2060 | platform_driver_unregister(&platform_driver); | |
2061 | fail_platform_driver: | |
ad8f07cc MG |
2062 | return ret; |
2063 | } | |
2064 | ||
2065 | static void __exit dell_exit(void) | |
2066 | { | |
037accfa | 2067 | debugfs_remove_recursive(dell_laptop_dir); |
2d8b90be AK |
2068 | if (quirks && quirks->touchpad_led) |
2069 | touchpad_led_exit(); | |
6cff8d60 | 2070 | kbd_led_exit(); |
ad8f07cc | 2071 | backlight_device_unregister(dell_backlight_device); |
4cc8a574 | 2072 | dell_cleanup_rfkill(); |
facd61d7 | 2073 | if (platform_device) { |
92e00e47 | 2074 | platform_device_unregister(platform_device); |
facd61d7 MG |
2075 | platform_driver_unregister(&platform_driver); |
2076 | } | |
ad8f07cc MG |
2077 | } |
2078 | ||
f8358578 PR |
2079 | /* dell-rbtn.c driver export functions which will not work correctly (and could |
2080 | * cause kernel crash) if they are called before dell-rbtn.c init code. This is | |
2081 | * not problem when dell-rbtn.c is compiled as external module. When both files | |
2082 | * (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we | |
2083 | * need to ensure that dell_init() will be called after initializing dell-rbtn. | |
2084 | * This can be achieved by late_initcall() instead module_init(). | |
2085 | */ | |
2086 | late_initcall(dell_init); | |
ad8f07cc MG |
2087 | module_exit(dell_exit); |
2088 | ||
2089 | MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); | |
6cff8d60 GM |
2090 | MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>"); |
2091 | MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); | |
ad8f07cc MG |
2092 | MODULE_DESCRIPTION("Dell laptop driver"); |
2093 | MODULE_LICENSE("GPL"); |