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> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
037accfa KYL |
32 | #include <linux/debugfs.h> |
33 | #include <linux/seq_file.h> | |
ee4cfe28 | 34 | #include <acpi/video.h> |
cad73120 | 35 | #include "../../firmware/dcdbas.h" |
f8358578 | 36 | #include "dell-rbtn.h" |
ad8f07cc MG |
37 | |
38 | #define BRIGHTNESS_TOKEN 0x7d | |
6cff8d60 GM |
39 | #define KBD_LED_OFF_TOKEN 0x01E1 |
40 | #define KBD_LED_ON_TOKEN 0x01E2 | |
41 | #define KBD_LED_AUTO_TOKEN 0x01E3 | |
42 | #define KBD_LED_AUTO_25_TOKEN 0x02EA | |
43 | #define KBD_LED_AUTO_50_TOKEN 0x02EB | |
44 | #define KBD_LED_AUTO_75_TOKEN 0x02EC | |
45 | #define KBD_LED_AUTO_100_TOKEN 0x02F6 | |
ad8f07cc MG |
46 | |
47 | /* This structure will be modified by the firmware when we enter | |
48 | * system management mode, hence the volatiles */ | |
49 | ||
50 | struct calling_interface_buffer { | |
51 | u16 class; | |
52 | u16 select; | |
53 | volatile u32 input[4]; | |
54 | volatile u32 output[4]; | |
55 | } __packed; | |
56 | ||
57 | struct calling_interface_token { | |
58 | u16 tokenID; | |
59 | u16 location; | |
60 | union { | |
61 | u16 value; | |
62 | u16 stringlength; | |
63 | }; | |
64 | }; | |
65 | ||
66 | struct calling_interface_structure { | |
67 | struct dmi_header header; | |
68 | u16 cmdIOAddress; | |
69 | u8 cmdIOCode; | |
70 | u32 supportedCmds; | |
71 | struct calling_interface_token tokens[]; | |
72 | } __packed; | |
73 | ||
2d8b90be AK |
74 | struct quirk_entry { |
75 | u8 touchpad_led; | |
6cff8d60 GM |
76 | |
77 | int needs_kbd_timeouts; | |
78 | /* | |
79 | * Ordered list of timeouts expressed in seconds. | |
80 | * The list must end with -1 | |
81 | */ | |
82 | int kbd_timeouts[]; | |
2d8b90be AK |
83 | }; |
84 | ||
85 | static struct quirk_entry *quirks; | |
86 | ||
87 | static struct quirk_entry quirk_dell_vostro_v130 = { | |
88 | .touchpad_led = 1, | |
89 | }; | |
90 | ||
681480cc | 91 | static int __init dmi_matched(const struct dmi_system_id *dmi) |
2d8b90be AK |
92 | { |
93 | quirks = dmi->driver_data; | |
94 | return 1; | |
95 | } | |
96 | ||
6cff8d60 GM |
97 | /* |
98 | * These values come from Windows utility provided by Dell. If any other value | |
99 | * is used then BIOS silently set timeout to 0 without any error message. | |
100 | */ | |
101 | static struct quirk_entry quirk_dell_xps13_9333 = { | |
102 | .needs_kbd_timeouts = 1, | |
103 | .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 }, | |
104 | }; | |
105 | ||
ad8f07cc MG |
106 | static int da_command_address; |
107 | static int da_command_code; | |
108 | static int da_num_tokens; | |
109 | static struct calling_interface_token *da_tokens; | |
110 | ||
ada3248a AJ |
111 | static struct platform_driver platform_driver = { |
112 | .driver = { | |
113 | .name = "dell-laptop", | |
ada3248a AJ |
114 | } |
115 | }; | |
116 | ||
117 | static struct platform_device *platform_device; | |
ad8f07cc | 118 | static struct backlight_device *dell_backlight_device; |
4cc8a574 HG |
119 | static struct rfkill *wifi_rfkill; |
120 | static struct rfkill *bluetooth_rfkill; | |
121 | static struct rfkill *wwan_rfkill; | |
8e0e668d HG |
122 | static bool force_rfkill; |
123 | ||
124 | module_param(force_rfkill, bool, 0444); | |
125 | MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models"); | |
ad8f07cc | 126 | |
145047de | 127 | static const struct dmi_system_id dell_device_table[] __initconst = { |
ad8f07cc MG |
128 | { |
129 | .ident = "Dell laptop", | |
130 | .matches = { | |
131 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
132 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
133 | }, | |
134 | }, | |
410d44c7 RK |
135 | { |
136 | .matches = { | |
137 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
138 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/ | |
139 | }, | |
140 | }, | |
cb6a7937 EA |
141 | { |
142 | .ident = "Dell Computer Corporation", | |
143 | .matches = { | |
144 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
145 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
146 | }, | |
147 | }, | |
ad8f07cc MG |
148 | { } |
149 | }; | |
35ae64fe | 150 | MODULE_DEVICE_TABLE(dmi, dell_device_table); |
ad8f07cc | 151 | |
681480cc | 152 | static const struct dmi_system_id dell_quirks[] __initconst = { |
2d8b90be AK |
153 | { |
154 | .callback = dmi_matched, | |
155 | .ident = "Dell Vostro V130", | |
156 | .matches = { | |
157 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
158 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"), | |
159 | }, | |
160 | .driver_data = &quirk_dell_vostro_v130, | |
161 | }, | |
162 | { | |
163 | .callback = dmi_matched, | |
164 | .ident = "Dell Vostro V131", | |
165 | .matches = { | |
166 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
167 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), | |
168 | }, | |
169 | .driver_data = &quirk_dell_vostro_v130, | |
170 | }, | |
57b31b2f AWC |
171 | { |
172 | .callback = dmi_matched, | |
173 | .ident = "Dell Vostro 3350", | |
174 | .matches = { | |
175 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
176 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"), | |
177 | }, | |
178 | .driver_data = &quirk_dell_vostro_v130, | |
179 | }, | |
2a748853 AK |
180 | { |
181 | .callback = dmi_matched, | |
182 | .ident = "Dell Vostro 3555", | |
183 | .matches = { | |
184 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
185 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"), | |
186 | }, | |
187 | .driver_data = &quirk_dell_vostro_v130, | |
188 | }, | |
189 | { | |
190 | .callback = dmi_matched, | |
191 | .ident = "Dell Inspiron N311z", | |
192 | .matches = { | |
193 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
194 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"), | |
195 | }, | |
196 | .driver_data = &quirk_dell_vostro_v130, | |
197 | }, | |
198 | { | |
199 | .callback = dmi_matched, | |
200 | .ident = "Dell Inspiron M5110", | |
201 | .matches = { | |
202 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
203 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"), | |
204 | }, | |
205 | .driver_data = &quirk_dell_vostro_v130, | |
206 | }, | |
7f839228 AK |
207 | { |
208 | .callback = dmi_matched, | |
209 | .ident = "Dell Vostro 3360", | |
210 | .matches = { | |
211 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
212 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"), | |
213 | }, | |
214 | .driver_data = &quirk_dell_vostro_v130, | |
215 | }, | |
216 | { | |
217 | .callback = dmi_matched, | |
218 | .ident = "Dell Vostro 3460", | |
219 | .matches = { | |
220 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
221 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"), | |
222 | }, | |
223 | .driver_data = &quirk_dell_vostro_v130, | |
224 | }, | |
225 | { | |
226 | .callback = dmi_matched, | |
227 | .ident = "Dell Vostro 3560", | |
228 | .matches = { | |
229 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
230 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"), | |
231 | }, | |
232 | .driver_data = &quirk_dell_vostro_v130, | |
233 | }, | |
d0e0a477 AK |
234 | { |
235 | .callback = dmi_matched, | |
236 | .ident = "Dell Vostro 3450", | |
237 | .matches = { | |
238 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
239 | DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"), | |
240 | }, | |
241 | .driver_data = &quirk_dell_vostro_v130, | |
242 | }, | |
5f1e88f4 AK |
243 | { |
244 | .callback = dmi_matched, | |
245 | .ident = "Dell Inspiron 5420", | |
246 | .matches = { | |
247 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 248 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"), |
5f1e88f4 AK |
249 | }, |
250 | .driver_data = &quirk_dell_vostro_v130, | |
251 | }, | |
252 | { | |
253 | .callback = dmi_matched, | |
254 | .ident = "Dell Inspiron 5520", | |
255 | .matches = { | |
256 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 257 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"), |
5f1e88f4 AK |
258 | }, |
259 | .driver_data = &quirk_dell_vostro_v130, | |
260 | }, | |
261 | { | |
262 | .callback = dmi_matched, | |
263 | .ident = "Dell Inspiron 5720", | |
264 | .matches = { | |
265 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 266 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"), |
5f1e88f4 AK |
267 | }, |
268 | .driver_data = &quirk_dell_vostro_v130, | |
269 | }, | |
270 | { | |
271 | .callback = dmi_matched, | |
272 | .ident = "Dell Inspiron 7420", | |
273 | .matches = { | |
274 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 275 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"), |
5f1e88f4 AK |
276 | }, |
277 | .driver_data = &quirk_dell_vostro_v130, | |
278 | }, | |
279 | { | |
280 | .callback = dmi_matched, | |
281 | .ident = "Dell Inspiron 7520", | |
282 | .matches = { | |
283 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 284 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"), |
5f1e88f4 AK |
285 | }, |
286 | .driver_data = &quirk_dell_vostro_v130, | |
287 | }, | |
288 | { | |
289 | .callback = dmi_matched, | |
290 | .ident = "Dell Inspiron 7720", | |
291 | .matches = { | |
292 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 293 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), |
5f1e88f4 AK |
294 | }, |
295 | .driver_data = &quirk_dell_vostro_v130, | |
296 | }, | |
6cff8d60 GM |
297 | { |
298 | .callback = dmi_matched, | |
299 | .ident = "Dell XPS13 9333", | |
300 | .matches = { | |
301 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
302 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"), | |
303 | }, | |
304 | .driver_data = &quirk_dell_xps13_9333, | |
305 | }, | |
d62d421b | 306 | { } |
2d8b90be AK |
307 | }; |
308 | ||
116ee77b | 309 | static struct calling_interface_buffer *buffer; |
94d8f785 | 310 | static DEFINE_MUTEX(buffer_mutex); |
116ee77b | 311 | |
c6760ac4 MG |
312 | static int hwswitch_state; |
313 | ||
ced53f6d PR |
314 | static void clear_buffer(void) |
315 | { | |
316 | memset(buffer, 0, sizeof(struct calling_interface_buffer)); | |
317 | } | |
318 | ||
116ee77b SH |
319 | static void get_buffer(void) |
320 | { | |
321 | mutex_lock(&buffer_mutex); | |
ced53f6d | 322 | clear_buffer(); |
116ee77b SH |
323 | } |
324 | ||
325 | static void release_buffer(void) | |
326 | { | |
327 | mutex_unlock(&buffer_mutex); | |
328 | } | |
329 | ||
4788df4c | 330 | static void __init parse_da_table(const struct dmi_header *dm) |
ad8f07cc MG |
331 | { |
332 | /* Final token is a terminator, so we don't want to copy it */ | |
333 | int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1; | |
fe9ab00f | 334 | struct calling_interface_token *new_da_tokens; |
ad8f07cc MG |
335 | struct calling_interface_structure *table = |
336 | container_of(dm, struct calling_interface_structure, header); | |
337 | ||
338 | /* 4 bytes of table header, plus 7 bytes of Dell header, plus at least | |
339 | 6 bytes of entry */ | |
340 | ||
341 | if (dm->length < 17) | |
342 | return; | |
343 | ||
344 | da_command_address = table->cmdIOAddress; | |
345 | da_command_code = table->cmdIOCode; | |
346 | ||
fe9ab00f DW |
347 | new_da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) * |
348 | sizeof(struct calling_interface_token), | |
349 | GFP_KERNEL); | |
ad8f07cc | 350 | |
fe9ab00f | 351 | if (!new_da_tokens) |
ad8f07cc | 352 | return; |
fe9ab00f | 353 | da_tokens = new_da_tokens; |
ad8f07cc MG |
354 | |
355 | memcpy(da_tokens+da_num_tokens, table->tokens, | |
356 | sizeof(struct calling_interface_token) * tokens); | |
357 | ||
358 | da_num_tokens += tokens; | |
359 | } | |
360 | ||
4788df4c | 361 | static void __init find_tokens(const struct dmi_header *dm, void *dummy) |
ad8f07cc MG |
362 | { |
363 | switch (dm->type) { | |
364 | case 0xd4: /* Indexed IO */ | |
ad8f07cc | 365 | case 0xd5: /* Protected Area Type 1 */ |
ad8f07cc MG |
366 | case 0xd6: /* Protected Area Type 2 */ |
367 | break; | |
368 | case 0xda: /* Calling interface */ | |
369 | parse_da_table(dm); | |
370 | break; | |
371 | } | |
372 | } | |
373 | ||
6cff8d60 | 374 | static int find_token_id(int tokenid) |
ad8f07cc MG |
375 | { |
376 | int i; | |
6cff8d60 | 377 | |
ad8f07cc MG |
378 | for (i = 0; i < da_num_tokens; i++) { |
379 | if (da_tokens[i].tokenID == tokenid) | |
6cff8d60 | 380 | return i; |
ad8f07cc MG |
381 | } |
382 | ||
383 | return -1; | |
384 | } | |
385 | ||
6cff8d60 GM |
386 | static int find_token_location(int tokenid) |
387 | { | |
388 | int id; | |
389 | ||
390 | id = find_token_id(tokenid); | |
391 | if (id == -1) | |
392 | return -1; | |
393 | ||
394 | return da_tokens[id].location; | |
395 | } | |
396 | ||
ad8f07cc MG |
397 | static struct calling_interface_buffer * |
398 | dell_send_request(struct calling_interface_buffer *buffer, int class, | |
399 | int select) | |
400 | { | |
401 | struct smi_cmd command; | |
402 | ||
403 | command.magic = SMI_CMD_MAGIC; | |
404 | command.command_address = da_command_address; | |
405 | command.command_code = da_command_code; | |
406 | command.ebx = virt_to_phys(buffer); | |
407 | command.ecx = 0x42534931; | |
408 | ||
409 | buffer->class = class; | |
410 | buffer->select = select; | |
411 | ||
412 | dcdbas_smi_request(&command); | |
413 | ||
414 | return buffer; | |
415 | } | |
416 | ||
6cff8d60 GM |
417 | static inline int dell_smi_error(int value) |
418 | { | |
419 | switch (value) { | |
420 | case 0: /* Completed successfully */ | |
421 | return 0; | |
422 | case -1: /* Completed with error */ | |
423 | return -EIO; | |
424 | case -2: /* Function not supported */ | |
425 | return -ENXIO; | |
426 | default: /* Unknown error */ | |
427 | return -EINVAL; | |
428 | } | |
429 | } | |
430 | ||
f992efbb PR |
431 | /* |
432 | * Derived from information in smbios-wireless-ctl: | |
433 | * | |
434 | * cbSelect 17, Value 11 | |
435 | * | |
436 | * Return Wireless Info | |
437 | * cbArg1, byte0 = 0x00 | |
438 | * | |
439 | * cbRes1 Standard return codes (0, -1, -2) | |
440 | * cbRes2 Info bit flags: | |
441 | * | |
442 | * 0 Hardware switch supported (1) | |
443 | * 1 WiFi locator supported (1) | |
444 | * 2 WLAN supported (1) | |
445 | * 3 Bluetooth (BT) supported (1) | |
446 | * 4 WWAN supported (1) | |
447 | * 5 Wireless KBD supported (1) | |
448 | * 6 Uw b supported (1) | |
449 | * 7 WiGig supported (1) | |
450 | * 8 WLAN installed (1) | |
451 | * 9 BT installed (1) | |
452 | * 10 WWAN installed (1) | |
453 | * 11 Uw b installed (1) | |
454 | * 12 WiGig installed (1) | |
455 | * 13-15 Reserved (0) | |
456 | * 16 Hardware (HW) switch is On (1) | |
457 | * 17 WLAN disabled (1) | |
458 | * 18 BT disabled (1) | |
459 | * 19 WWAN disabled (1) | |
460 | * 20 Uw b disabled (1) | |
461 | * 21 WiGig disabled (1) | |
462 | * 20-31 Reserved (0) | |
463 | * | |
464 | * cbRes3 NVRAM size in bytes | |
465 | * cbRes4, byte 0 NVRAM format version number | |
466 | * | |
467 | * | |
468 | * Set QuickSet Radio Disable Flag | |
469 | * cbArg1, byte0 = 0x01 | |
470 | * cbArg1, byte1 | |
471 | * Radio ID value: | |
472 | * 0 Radio Status | |
473 | * 1 WLAN ID | |
474 | * 2 BT ID | |
475 | * 3 WWAN ID | |
476 | * 4 UWB ID | |
477 | * 5 WIGIG ID | |
478 | * cbArg1, byte2 Flag bits: | |
479 | * 0 QuickSet disables radio (1) | |
480 | * 1-7 Reserved (0) | |
481 | * | |
482 | * cbRes1 Standard return codes (0, -1, -2) | |
483 | * cbRes2 QuickSet (QS) radio disable bit map: | |
484 | * 0 QS disables WLAN | |
485 | * 1 QS disables BT | |
486 | * 2 QS disables WWAN | |
487 | * 3 QS disables UWB | |
488 | * 4 QS disables WIGIG | |
489 | * 5-31 Reserved (0) | |
490 | * | |
491 | * Wireless Switch Configuration | |
492 | * cbArg1, byte0 = 0x02 | |
493 | * | |
494 | * cbArg1, byte1 | |
495 | * Subcommand: | |
496 | * 0 Get config | |
497 | * 1 Set config | |
498 | * 2 Set WiFi locator enable/disable | |
499 | * cbArg1,byte2 | |
500 | * Switch settings (if byte 1==1): | |
501 | * 0 WLAN sw itch control (1) | |
502 | * 1 BT sw itch control (1) | |
503 | * 2 WWAN sw itch control (1) | |
504 | * 3 UWB sw itch control (1) | |
505 | * 4 WiGig sw itch control (1) | |
506 | * 5-7 Reserved (0) | |
507 | * cbArg1, byte2 Enable bits (if byte 1==2): | |
508 | * 0 Enable WiFi locator (1) | |
509 | * | |
510 | * cbRes1 Standard return codes (0, -1, -2) | |
511 | * cbRes2 QuickSet radio disable bit map: | |
512 | * 0 WLAN controlled by sw itch (1) | |
513 | * 1 BT controlled by sw itch (1) | |
514 | * 2 WWAN controlled by sw itch (1) | |
515 | * 3 UWB controlled by sw itch (1) | |
516 | * 4 WiGig controlled by sw itch (1) | |
517 | * 5-6 Reserved (0) | |
518 | * 7 Wireless sw itch config locked (1) | |
519 | * 8 WiFi locator enabled (1) | |
520 | * 9-14 Reserved (0) | |
521 | * 15 WiFi locator setting locked (1) | |
522 | * 16-31 Reserved (0) | |
523 | * | |
524 | * Read Local Config Data (LCD) | |
525 | * cbArg1, byte0 = 0x10 | |
526 | * cbArg1, byte1 NVRAM index low byte | |
527 | * cbArg1, byte2 NVRAM index high byte | |
528 | * cbRes1 Standard return codes (0, -1, -2) | |
529 | * cbRes2 4 bytes read from LCD[index] | |
530 | * cbRes3 4 bytes read from LCD[index+4] | |
531 | * cbRes4 4 bytes read from LCD[index+8] | |
532 | * | |
533 | * Write Local Config Data (LCD) | |
534 | * cbArg1, byte0 = 0x11 | |
535 | * cbArg1, byte1 NVRAM index low byte | |
536 | * cbArg1, byte2 NVRAM index high byte | |
537 | * cbArg2 4 bytes to w rite at LCD[index] | |
538 | * cbArg3 4 bytes to w rite at LCD[index+4] | |
539 | * cbArg4 4 bytes to w rite at LCD[index+8] | |
540 | * cbRes1 Standard return codes (0, -1, -2) | |
541 | * | |
542 | * Populate Local Config Data from NVRAM | |
543 | * cbArg1, byte0 = 0x12 | |
544 | * cbRes1 Standard return codes (0, -1, -2) | |
545 | * | |
546 | * Commit Local Config Data to NVRAM | |
547 | * cbArg1, byte0 = 0x13 | |
548 | * cbRes1 Standard return codes (0, -1, -2) | |
549 | */ | |
4cc8a574 HG |
550 | |
551 | static int dell_rfkill_set(void *data, bool blocked) | |
552 | { | |
553 | int disable = blocked ? 1 : 0; | |
554 | unsigned long radio = (unsigned long)data; | |
555 | int hwswitch_bit = (unsigned long)data - 1; | |
4cc8a574 HG |
556 | |
557 | get_buffer(); | |
558 | dell_send_request(buffer, 17, 11); | |
559 | ||
560 | /* If the hardware switch controls this radio, and the hardware | |
ed112898 | 561 | switch is disabled, always disable the radio */ |
4cc8a574 | 562 | if ((hwswitch_state & BIT(hwswitch_bit)) && |
4d39d88c | 563 | !(buffer->output[1] & BIT(16))) |
ed112898 | 564 | disable = 1; |
4cc8a574 | 565 | |
ced53f6d PR |
566 | clear_buffer(); |
567 | ||
4cc8a574 HG |
568 | buffer->input[0] = (1 | (radio<<8) | (disable << 16)); |
569 | dell_send_request(buffer, 17, 11); | |
570 | ||
4cc8a574 | 571 | release_buffer(); |
4d39d88c | 572 | return 0; |
4cc8a574 HG |
573 | } |
574 | ||
04c9a3a0 | 575 | /* Must be called with the buffer held */ |
33f9359a HG |
576 | static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, |
577 | int status) | |
d038880e | 578 | { |
04c9a3a0 HG |
579 | if (status & BIT(0)) { |
580 | /* Has hw-switch, sync sw_state to BIOS */ | |
581 | int block = rfkill_blocked(rfkill); | |
ced53f6d | 582 | clear_buffer(); |
04c9a3a0 HG |
583 | buffer->input[0] = (1 | (radio << 8) | (block << 16)); |
584 | dell_send_request(buffer, 17, 11); | |
585 | } else { | |
3f56588a HG |
586 | /* No hw-switch, sync BIOS state to sw_state */ |
587 | rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); | |
588 | } | |
33f9359a | 589 | } |
d038880e | 590 | |
33f9359a HG |
591 | static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio, |
592 | int status) | |
593 | { | |
d038880e HG |
594 | if (hwswitch_state & (BIT(radio - 1))) |
595 | rfkill_set_hw_state(rfkill, !(status & BIT(16))); | |
596 | } | |
597 | ||
4cc8a574 HG |
598 | static void dell_rfkill_query(struct rfkill *rfkill, void *data) |
599 | { | |
600 | int status; | |
4cc8a574 HG |
601 | |
602 | get_buffer(); | |
603 | dell_send_request(buffer, 17, 11); | |
604 | status = buffer->output[1]; | |
4cc8a574 | 605 | |
33f9359a | 606 | dell_rfkill_update_hw_state(rfkill, (unsigned long)data, status); |
04c9a3a0 HG |
607 | |
608 | release_buffer(); | |
4cc8a574 HG |
609 | } |
610 | ||
611 | static const struct rfkill_ops dell_rfkill_ops = { | |
612 | .set_block = dell_rfkill_set, | |
613 | .query = dell_rfkill_query, | |
614 | }; | |
615 | ||
037accfa KYL |
616 | static struct dentry *dell_laptop_dir; |
617 | ||
618 | static int dell_debugfs_show(struct seq_file *s, void *data) | |
619 | { | |
620 | int status; | |
621 | ||
622 | get_buffer(); | |
623 | dell_send_request(buffer, 17, 11); | |
624 | status = buffer->output[1]; | |
625 | release_buffer(); | |
626 | ||
627 | seq_printf(s, "status:\t0x%X\n", status); | |
628 | seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n", | |
629 | status & BIT(0)); | |
630 | seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n", | |
631 | (status & BIT(1)) >> 1); | |
632 | seq_printf(s, "Bit 2 : Wifi is supported: %lu\n", | |
633 | (status & BIT(2)) >> 2); | |
634 | seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n", | |
635 | (status & BIT(3)) >> 3); | |
636 | seq_printf(s, "Bit 4 : WWAN is supported: %lu\n", | |
637 | (status & BIT(4)) >> 4); | |
638 | seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", | |
639 | (status & BIT(5)) >> 5); | |
2e19f93f PR |
640 | seq_printf(s, "Bit 6 : UWB supported: %lu\n", |
641 | (status & BIT(6)) >> 6); | |
642 | seq_printf(s, "Bit 7 : WiGig supported: %lu\n", | |
643 | (status & BIT(7)) >> 7); | |
037accfa KYL |
644 | seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", |
645 | (status & BIT(8)) >> 8); | |
646 | seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", | |
647 | (status & BIT(9)) >> 9); | |
648 | seq_printf(s, "Bit 10: WWAN is installed: %lu\n", | |
649 | (status & BIT(10)) >> 10); | |
2e19f93f PR |
650 | seq_printf(s, "Bit 11: UWB installed: %lu\n", |
651 | (status & BIT(11)) >> 11); | |
652 | seq_printf(s, "Bit 12: WiGig installed: %lu\n", | |
653 | (status & BIT(12)) >> 12); | |
654 | ||
037accfa KYL |
655 | seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", |
656 | (status & BIT(16)) >> 16); | |
657 | seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", | |
658 | (status & BIT(17)) >> 17); | |
659 | seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n", | |
660 | (status & BIT(18)) >> 18); | |
661 | seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", | |
662 | (status & BIT(19)) >> 19); | |
2e19f93f PR |
663 | seq_printf(s, "Bit 20: UWB is blocked: %lu\n", |
664 | (status & BIT(20)) >> 20); | |
665 | seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", | |
666 | (status & BIT(21)) >> 21); | |
037accfa KYL |
667 | |
668 | seq_printf(s, "\nhwswitch_state:\t0x%X\n", hwswitch_state); | |
669 | seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", | |
670 | hwswitch_state & BIT(0)); | |
671 | seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n", | |
672 | (hwswitch_state & BIT(1)) >> 1); | |
673 | seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", | |
674 | (hwswitch_state & BIT(2)) >> 2); | |
2e19f93f PR |
675 | seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", |
676 | (hwswitch_state & BIT(3)) >> 3); | |
677 | seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", | |
678 | (hwswitch_state & BIT(4)) >> 4); | |
037accfa KYL |
679 | seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", |
680 | (hwswitch_state & BIT(7)) >> 7); | |
681 | seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", | |
682 | (hwswitch_state & BIT(8)) >> 8); | |
683 | seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n", | |
684 | (hwswitch_state & BIT(15)) >> 15); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | static int dell_debugfs_open(struct inode *inode, struct file *file) | |
690 | { | |
691 | return single_open(file, dell_debugfs_show, inode->i_private); | |
692 | } | |
693 | ||
694 | static const struct file_operations dell_debugfs_fops = { | |
695 | .owner = THIS_MODULE, | |
696 | .open = dell_debugfs_open, | |
697 | .read = seq_read, | |
698 | .llseek = seq_lseek, | |
699 | .release = single_release, | |
700 | }; | |
701 | ||
4cc8a574 HG |
702 | static void dell_update_rfkill(struct work_struct *ignored) |
703 | { | |
d038880e HG |
704 | int status; |
705 | ||
706 | get_buffer(); | |
707 | dell_send_request(buffer, 17, 11); | |
708 | status = buffer->output[1]; | |
d038880e | 709 | |
33f9359a HG |
710 | if (wifi_rfkill) { |
711 | dell_rfkill_update_hw_state(wifi_rfkill, 1, status); | |
712 | dell_rfkill_update_sw_state(wifi_rfkill, 1, status); | |
713 | } | |
714 | if (bluetooth_rfkill) { | |
715 | dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status); | |
716 | dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status); | |
717 | } | |
718 | if (wwan_rfkill) { | |
719 | dell_rfkill_update_hw_state(wwan_rfkill, 3, status); | |
720 | dell_rfkill_update_sw_state(wwan_rfkill, 3, status); | |
721 | } | |
04c9a3a0 HG |
722 | |
723 | release_buffer(); | |
4cc8a574 HG |
724 | } |
725 | static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); | |
726 | ||
97f440c2 HG |
727 | static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, |
728 | struct serio *port) | |
729 | { | |
730 | static bool extended; | |
731 | ||
98280374 | 732 | if (str & I8042_STR_AUXDATA) |
97f440c2 HG |
733 | return false; |
734 | ||
735 | if (unlikely(data == 0xe0)) { | |
736 | extended = true; | |
737 | return false; | |
738 | } else if (unlikely(extended)) { | |
739 | switch (data) { | |
740 | case 0x8: | |
741 | schedule_delayed_work(&dell_rfkill_work, | |
742 | round_jiffies_relative(HZ / 4)); | |
743 | break; | |
744 | } | |
745 | extended = false; | |
746 | } | |
747 | ||
748 | return false; | |
749 | } | |
4cc8a574 | 750 | |
f8358578 PR |
751 | static int (*dell_rbtn_notifier_register_func)(struct notifier_block *); |
752 | static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *); | |
753 | ||
754 | static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb, | |
755 | unsigned long action, void *data) | |
756 | { | |
757 | schedule_delayed_work(&dell_rfkill_work, 0); | |
758 | return NOTIFY_OK; | |
759 | } | |
760 | ||
761 | static struct notifier_block dell_laptop_rbtn_notifier = { | |
762 | .notifier_call = dell_laptop_rbtn_notifier_call, | |
763 | }; | |
764 | ||
4cc8a574 HG |
765 | static int __init dell_setup_rfkill(void) |
766 | { | |
ba5194f1 | 767 | int status, ret, whitelisted; |
2a925518 HG |
768 | const char *product; |
769 | ||
770 | /* | |
ba5194f1 HG |
771 | * rfkill support causes trouble on various models, mostly Inspirons. |
772 | * So we whitelist certain series, and don't support rfkill on others. | |
2a925518 | 773 | */ |
ba5194f1 | 774 | whitelisted = 0; |
2a925518 | 775 | product = dmi_get_system_info(DMI_PRODUCT_NAME); |
ba5194f1 HG |
776 | if (product && (strncmp(product, "Latitude", 8) == 0 || |
777 | strncmp(product, "Precision", 9) == 0)) | |
778 | whitelisted = 1; | |
779 | if (!force_rfkill && !whitelisted) | |
4cc8a574 | 780 | return 0; |
4cc8a574 HG |
781 | |
782 | get_buffer(); | |
783 | dell_send_request(buffer, 17, 11); | |
784 | status = buffer->output[1]; | |
ced53f6d | 785 | clear_buffer(); |
4cc8a574 HG |
786 | buffer->input[0] = 0x2; |
787 | dell_send_request(buffer, 17, 11); | |
788 | hwswitch_state = buffer->output[1]; | |
789 | release_buffer(); | |
790 | ||
2bd4ac13 HG |
791 | if (!(status & BIT(0))) { |
792 | if (force_rfkill) { | |
793 | /* No hwsitch, clear all hw-controlled bits */ | |
794 | hwswitch_state &= ~7; | |
795 | } else { | |
796 | /* rfkill is only tested on laptops with a hwswitch */ | |
797 | return 0; | |
798 | } | |
799 | } | |
800 | ||
4cc8a574 HG |
801 | if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { |
802 | wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, | |
803 | RFKILL_TYPE_WLAN, | |
804 | &dell_rfkill_ops, (void *) 1); | |
805 | if (!wifi_rfkill) { | |
806 | ret = -ENOMEM; | |
807 | goto err_wifi; | |
808 | } | |
809 | ret = rfkill_register(wifi_rfkill); | |
810 | if (ret) | |
811 | goto err_wifi; | |
812 | } | |
813 | ||
814 | if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { | |
815 | bluetooth_rfkill = rfkill_alloc("dell-bluetooth", | |
816 | &platform_device->dev, | |
817 | RFKILL_TYPE_BLUETOOTH, | |
818 | &dell_rfkill_ops, (void *) 2); | |
819 | if (!bluetooth_rfkill) { | |
820 | ret = -ENOMEM; | |
821 | goto err_bluetooth; | |
822 | } | |
823 | ret = rfkill_register(bluetooth_rfkill); | |
824 | if (ret) | |
825 | goto err_bluetooth; | |
826 | } | |
827 | ||
828 | if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { | |
829 | wwan_rfkill = rfkill_alloc("dell-wwan", | |
830 | &platform_device->dev, | |
831 | RFKILL_TYPE_WWAN, | |
832 | &dell_rfkill_ops, (void *) 3); | |
833 | if (!wwan_rfkill) { | |
834 | ret = -ENOMEM; | |
835 | goto err_wwan; | |
836 | } | |
837 | ret = rfkill_register(wwan_rfkill); | |
838 | if (ret) | |
839 | goto err_wwan; | |
840 | } | |
841 | ||
f8358578 PR |
842 | /* |
843 | * Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices | |
844 | * which can receive events from HW slider switch. | |
845 | * | |
846 | * Dell SMBIOS on whitelisted models supports controlling radio devices | |
847 | * but does not support receiving HW button switch events. We can use | |
848 | * i8042 filter hook function to receive keyboard data and handle | |
849 | * keycode for HW button. | |
850 | * | |
851 | * So if it is possible we will use Dell Airplane Mode Switch ACPI | |
852 | * driver for receiving HW events and Dell SMBIOS for setting rfkill | |
853 | * states. If ACPI driver or device is not available we will fallback to | |
854 | * i8042 filter hook function. | |
855 | * | |
856 | * To prevent duplicate rfkill devices which control and do same thing, | |
857 | * dell-rbtn driver will automatically remove its own rfkill devices | |
858 | * once function dell_rbtn_notifier_register() is called. | |
859 | */ | |
860 | ||
861 | dell_rbtn_notifier_register_func = | |
862 | symbol_request(dell_rbtn_notifier_register); | |
863 | if (dell_rbtn_notifier_register_func) { | |
864 | dell_rbtn_notifier_unregister_func = | |
865 | symbol_request(dell_rbtn_notifier_unregister); | |
866 | if (!dell_rbtn_notifier_unregister_func) { | |
867 | symbol_put(dell_rbtn_notifier_register); | |
868 | dell_rbtn_notifier_register_func = NULL; | |
869 | } | |
870 | } | |
871 | ||
872 | if (dell_rbtn_notifier_register_func) { | |
873 | ret = dell_rbtn_notifier_register_func( | |
874 | &dell_laptop_rbtn_notifier); | |
875 | symbol_put(dell_rbtn_notifier_register); | |
876 | dell_rbtn_notifier_register_func = NULL; | |
877 | if (ret != 0) { | |
878 | symbol_put(dell_rbtn_notifier_unregister); | |
879 | dell_rbtn_notifier_unregister_func = NULL; | |
880 | } | |
881 | } else { | |
882 | pr_info("Symbols from dell-rbtn acpi driver are not available\n"); | |
883 | ret = -ENODEV; | |
884 | } | |
885 | ||
886 | if (ret == 0) { | |
887 | pr_info("Using dell-rbtn acpi driver for receiving events\n"); | |
888 | } else if (ret != -ENODEV) { | |
889 | pr_warn("Unable to register dell rbtn notifier\n"); | |
97f440c2 | 890 | goto err_filter; |
f8358578 PR |
891 | } else { |
892 | ret = i8042_install_filter(dell_laptop_i8042_filter); | |
893 | if (ret) { | |
894 | pr_warn("Unable to install key filter\n"); | |
895 | goto err_filter; | |
896 | } | |
897 | pr_info("Using i8042 filter function for receiving events\n"); | |
97f440c2 HG |
898 | } |
899 | ||
4cc8a574 | 900 | return 0; |
97f440c2 HG |
901 | err_filter: |
902 | if (wwan_rfkill) | |
903 | rfkill_unregister(wwan_rfkill); | |
4cc8a574 HG |
904 | err_wwan: |
905 | rfkill_destroy(wwan_rfkill); | |
906 | if (bluetooth_rfkill) | |
907 | rfkill_unregister(bluetooth_rfkill); | |
908 | err_bluetooth: | |
909 | rfkill_destroy(bluetooth_rfkill); | |
910 | if (wifi_rfkill) | |
911 | rfkill_unregister(wifi_rfkill); | |
912 | err_wifi: | |
913 | rfkill_destroy(wifi_rfkill); | |
914 | ||
915 | return ret; | |
916 | } | |
917 | ||
918 | static void dell_cleanup_rfkill(void) | |
919 | { | |
f8358578 PR |
920 | if (dell_rbtn_notifier_unregister_func) { |
921 | dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier); | |
922 | symbol_put(dell_rbtn_notifier_unregister); | |
923 | dell_rbtn_notifier_unregister_func = NULL; | |
924 | } else { | |
925 | i8042_remove_filter(dell_laptop_i8042_filter); | |
926 | } | |
927 | cancel_delayed_work_sync(&dell_rfkill_work); | |
4cc8a574 HG |
928 | if (wifi_rfkill) { |
929 | rfkill_unregister(wifi_rfkill); | |
930 | rfkill_destroy(wifi_rfkill); | |
931 | } | |
932 | if (bluetooth_rfkill) { | |
933 | rfkill_unregister(bluetooth_rfkill); | |
934 | rfkill_destroy(bluetooth_rfkill); | |
935 | } | |
936 | if (wwan_rfkill) { | |
937 | rfkill_unregister(wwan_rfkill); | |
938 | rfkill_destroy(wwan_rfkill); | |
939 | } | |
940 | } | |
941 | ||
ad8f07cc MG |
942 | static int dell_send_intensity(struct backlight_device *bd) |
943 | { | |
116ee77b | 944 | int ret = 0; |
ad8f07cc | 945 | |
116ee77b SH |
946 | get_buffer(); |
947 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
948 | buffer->input[1] = bd->props.brightness; | |
ad8f07cc | 949 | |
116ee77b SH |
950 | if (buffer->input[0] == -1) { |
951 | ret = -ENODEV; | |
952 | goto out; | |
953 | } | |
ad8f07cc MG |
954 | |
955 | if (power_supply_is_system_supplied() > 0) | |
116ee77b | 956 | dell_send_request(buffer, 1, 2); |
ad8f07cc | 957 | else |
116ee77b | 958 | dell_send_request(buffer, 1, 1); |
ad8f07cc | 959 | |
6cff8d60 | 960 | out: |
116ee77b | 961 | release_buffer(); |
7da8fb27 | 962 | return ret; |
ad8f07cc MG |
963 | } |
964 | ||
965 | static int dell_get_intensity(struct backlight_device *bd) | |
966 | { | |
116ee77b | 967 | int ret = 0; |
ad8f07cc | 968 | |
116ee77b SH |
969 | get_buffer(); |
970 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
ad8f07cc | 971 | |
116ee77b SH |
972 | if (buffer->input[0] == -1) { |
973 | ret = -ENODEV; | |
974 | goto out; | |
975 | } | |
ad8f07cc MG |
976 | |
977 | if (power_supply_is_system_supplied() > 0) | |
116ee77b | 978 | dell_send_request(buffer, 0, 2); |
ad8f07cc | 979 | else |
116ee77b | 980 | dell_send_request(buffer, 0, 1); |
ad8f07cc | 981 | |
b486742a JA |
982 | ret = buffer->output[1]; |
983 | ||
6cff8d60 | 984 | out: |
116ee77b | 985 | release_buffer(); |
b486742a | 986 | return ret; |
ad8f07cc MG |
987 | } |
988 | ||
acc2472e | 989 | static const struct backlight_ops dell_ops = { |
ad8f07cc MG |
990 | .get_brightness = dell_get_intensity, |
991 | .update_status = dell_send_intensity, | |
992 | }; | |
993 | ||
869f8dfa | 994 | static void touchpad_led_on(void) |
2d8b90be AK |
995 | { |
996 | int command = 0x97; | |
997 | char data = 1; | |
998 | i8042_command(&data, command | 1 << 12); | |
999 | } | |
1000 | ||
869f8dfa | 1001 | static void touchpad_led_off(void) |
2d8b90be AK |
1002 | { |
1003 | int command = 0x97; | |
1004 | char data = 2; | |
1005 | i8042_command(&data, command | 1 << 12); | |
1006 | } | |
1007 | ||
1008 | static void touchpad_led_set(struct led_classdev *led_cdev, | |
1009 | enum led_brightness value) | |
1010 | { | |
1011 | if (value > 0) | |
1012 | touchpad_led_on(); | |
1013 | else | |
1014 | touchpad_led_off(); | |
1015 | } | |
1016 | ||
1017 | static struct led_classdev touchpad_led = { | |
1018 | .name = "dell-laptop::touchpad", | |
1019 | .brightness_set = touchpad_led_set, | |
2d5de9e8 | 1020 | .flags = LED_CORE_SUSPENDRESUME, |
2d8b90be AK |
1021 | }; |
1022 | ||
681480cc | 1023 | static int __init touchpad_led_init(struct device *dev) |
2d8b90be AK |
1024 | { |
1025 | return led_classdev_register(dev, &touchpad_led); | |
1026 | } | |
1027 | ||
1028 | static void touchpad_led_exit(void) | |
1029 | { | |
1030 | led_classdev_unregister(&touchpad_led); | |
1031 | } | |
1032 | ||
6cff8d60 GM |
1033 | /* |
1034 | * Derived from information in smbios-keyboard-ctl: | |
1035 | * | |
1036 | * cbClass 4 | |
1037 | * cbSelect 11 | |
1038 | * Keyboard illumination | |
1039 | * cbArg1 determines the function to be performed | |
1040 | * | |
1041 | * cbArg1 0x0 = Get Feature Information | |
1042 | * cbRES1 Standard return codes (0, -1, -2) | |
1043 | * cbRES2, word0 Bitmap of user-selectable modes | |
1044 | * bit 0 Always off (All systems) | |
1045 | * bit 1 Always on (Travis ATG, Siberia) | |
1046 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1047 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1048 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1049 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1050 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1051 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1052 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1053 | * bits 9-15 Reserved for future use | |
1054 | * cbRES2, byte2 Reserved for future use | |
1055 | * cbRES2, byte3 Keyboard illumination type | |
1056 | * 0 Reserved | |
1057 | * 1 Tasklight | |
1058 | * 2 Backlight | |
1059 | * 3-255 Reserved for future use | |
1060 | * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap. | |
1061 | * bit 0 Any keystroke | |
1062 | * bit 1 Touchpad activity | |
1063 | * bit 2 Pointing stick | |
1064 | * bit 3 Any mouse | |
1065 | * bits 4-7 Reserved for future use | |
1066 | * cbRES3, byte1 Supported timeout unit bitmap | |
1067 | * bit 0 Seconds | |
1068 | * bit 1 Minutes | |
1069 | * bit 2 Hours | |
1070 | * bit 3 Days | |
1071 | * bits 4-7 Reserved for future use | |
1072 | * cbRES3, byte2 Number of keyboard light brightness levels | |
1073 | * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported). | |
1074 | * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported). | |
1075 | * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported). | |
1076 | * cbRES4, byte3 Maximum acceptable days value (0 if days not supported) | |
1077 | * | |
1078 | * cbArg1 0x1 = Get Current State | |
1079 | * cbRES1 Standard return codes (0, -1, -2) | |
1080 | * cbRES2, word0 Bitmap of current mode state | |
1081 | * bit 0 Always off (All systems) | |
1082 | * bit 1 Always on (Travis ATG, Siberia) | |
1083 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1084 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1085 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1086 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1087 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1088 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1089 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1090 | * bits 9-15 Reserved for future use | |
1091 | * Note: Only One bit can be set | |
1092 | * cbRES2, byte2 Currently active auto keyboard illumination triggers. | |
1093 | * bit 0 Any keystroke | |
1094 | * bit 1 Touchpad activity | |
1095 | * bit 2 Pointing stick | |
1096 | * bit 3 Any mouse | |
1097 | * bits 4-7 Reserved for future use | |
1098 | * cbRES2, byte3 Current Timeout | |
1099 | * bits 7:6 Timeout units indicator: | |
1100 | * 00b Seconds | |
1101 | * 01b Minutes | |
1102 | * 10b Hours | |
1103 | * 11b Days | |
1104 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1105 | * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte | |
1106 | * are set upon return from the [Get feature information] call. | |
1107 | * cbRES3, byte0 Current setting of ALS value that turns the light on or off. | |
1108 | * cbRES3, byte1 Current ALS reading | |
1109 | * cbRES3, byte2 Current keyboard light level. | |
1110 | * | |
1111 | * cbArg1 0x2 = Set New State | |
1112 | * cbRES1 Standard return codes (0, -1, -2) | |
1113 | * cbArg2, word0 Bitmap of current mode state | |
1114 | * bit 0 Always off (All systems) | |
1115 | * bit 1 Always on (Travis ATG, Siberia) | |
1116 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1117 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1118 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1119 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1120 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1121 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1122 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1123 | * bits 9-15 Reserved for future use | |
1124 | * Note: Only One bit can be set | |
1125 | * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow | |
1126 | * keyboard to turn off automatically. | |
1127 | * bit 0 Any keystroke | |
1128 | * bit 1 Touchpad activity | |
1129 | * bit 2 Pointing stick | |
1130 | * bit 3 Any mouse | |
1131 | * bits 4-7 Reserved for future use | |
1132 | * cbArg2, byte3 Desired Timeout | |
1133 | * bits 7:6 Timeout units indicator: | |
1134 | * 00b Seconds | |
1135 | * 01b Minutes | |
1136 | * 10b Hours | |
1137 | * 11b Days | |
1138 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1139 | * cbArg3, byte0 Desired setting of ALS value that turns the light on or off. | |
1140 | * cbArg3, byte2 Desired keyboard light level. | |
1141 | */ | |
1142 | ||
1143 | ||
1144 | enum kbd_timeout_unit { | |
1145 | KBD_TIMEOUT_SECONDS = 0, | |
1146 | KBD_TIMEOUT_MINUTES, | |
1147 | KBD_TIMEOUT_HOURS, | |
1148 | KBD_TIMEOUT_DAYS, | |
1149 | }; | |
1150 | ||
1151 | enum kbd_mode_bit { | |
1152 | KBD_MODE_BIT_OFF = 0, | |
1153 | KBD_MODE_BIT_ON, | |
1154 | KBD_MODE_BIT_ALS, | |
1155 | KBD_MODE_BIT_TRIGGER_ALS, | |
1156 | KBD_MODE_BIT_TRIGGER, | |
1157 | KBD_MODE_BIT_TRIGGER_25, | |
1158 | KBD_MODE_BIT_TRIGGER_50, | |
1159 | KBD_MODE_BIT_TRIGGER_75, | |
1160 | KBD_MODE_BIT_TRIGGER_100, | |
1161 | }; | |
1162 | ||
1163 | #define kbd_is_als_mode_bit(bit) \ | |
1164 | ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS) | |
1165 | #define kbd_is_trigger_mode_bit(bit) \ | |
1166 | ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1167 | #define kbd_is_level_mode_bit(bit) \ | |
1168 | ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1169 | ||
1170 | struct kbd_info { | |
1171 | u16 modes; | |
1172 | u8 type; | |
1173 | u8 triggers; | |
1174 | u8 levels; | |
1175 | u8 seconds; | |
1176 | u8 minutes; | |
1177 | u8 hours; | |
1178 | u8 days; | |
1179 | }; | |
1180 | ||
1181 | struct kbd_state { | |
1182 | u8 mode_bit; | |
1183 | u8 triggers; | |
1184 | u8 timeout_value; | |
1185 | u8 timeout_unit; | |
1186 | u8 als_setting; | |
1187 | u8 als_value; | |
1188 | u8 level; | |
1189 | }; | |
1190 | ||
1191 | static const int kbd_tokens[] = { | |
1192 | KBD_LED_OFF_TOKEN, | |
1193 | KBD_LED_AUTO_25_TOKEN, | |
1194 | KBD_LED_AUTO_50_TOKEN, | |
1195 | KBD_LED_AUTO_75_TOKEN, | |
1196 | KBD_LED_AUTO_100_TOKEN, | |
1197 | KBD_LED_ON_TOKEN, | |
1198 | }; | |
1199 | ||
1200 | static u16 kbd_token_bits; | |
1201 | ||
1202 | static struct kbd_info kbd_info; | |
1203 | static bool kbd_als_supported; | |
1204 | static bool kbd_triggers_supported; | |
1205 | ||
1206 | static u8 kbd_mode_levels[16]; | |
1207 | static int kbd_mode_levels_count; | |
1208 | ||
1209 | static u8 kbd_previous_level; | |
1210 | static u8 kbd_previous_mode_bit; | |
1211 | ||
1212 | static bool kbd_led_present; | |
1213 | ||
1214 | /* | |
1215 | * NOTE: there are three ways to set the keyboard backlight level. | |
1216 | * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value). | |
1217 | * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels). | |
1218 | * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens) | |
1219 | * | |
1220 | * There are laptops which support only one of these methods. If we want to | |
1221 | * support as many machines as possible we need to implement all three methods. | |
1222 | * The first two methods use the kbd_state structure. The third uses SMBIOS | |
1223 | * tokens. If kbd_info.levels == 0, the machine does not support setting the | |
1224 | * keyboard backlight level via kbd_state.level. | |
1225 | */ | |
1226 | ||
1227 | static int kbd_get_info(struct kbd_info *info) | |
1228 | { | |
1229 | u8 units; | |
1230 | int ret; | |
1231 | ||
1232 | get_buffer(); | |
1233 | ||
1234 | buffer->input[0] = 0x0; | |
1235 | dell_send_request(buffer, 4, 11); | |
1236 | ret = buffer->output[0]; | |
1237 | ||
1238 | if (ret) { | |
1239 | ret = dell_smi_error(ret); | |
1240 | goto out; | |
1241 | } | |
1242 | ||
1243 | info->modes = buffer->output[1] & 0xFFFF; | |
1244 | info->type = (buffer->output[1] >> 24) & 0xFF; | |
1245 | info->triggers = buffer->output[2] & 0xFF; | |
1246 | units = (buffer->output[2] >> 8) & 0xFF; | |
1247 | info->levels = (buffer->output[2] >> 16) & 0xFF; | |
1248 | ||
1249 | if (units & BIT(0)) | |
1250 | info->seconds = (buffer->output[3] >> 0) & 0xFF; | |
1251 | if (units & BIT(1)) | |
1252 | info->minutes = (buffer->output[3] >> 8) & 0xFF; | |
1253 | if (units & BIT(2)) | |
1254 | info->hours = (buffer->output[3] >> 16) & 0xFF; | |
1255 | if (units & BIT(3)) | |
1256 | info->days = (buffer->output[3] >> 24) & 0xFF; | |
1257 | ||
1258 | out: | |
1259 | release_buffer(); | |
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | static unsigned int kbd_get_max_level(void) | |
1264 | { | |
1265 | if (kbd_info.levels != 0) | |
1266 | return kbd_info.levels; | |
1267 | if (kbd_mode_levels_count > 0) | |
1268 | return kbd_mode_levels_count - 1; | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | static int kbd_get_level(struct kbd_state *state) | |
1273 | { | |
1274 | int i; | |
1275 | ||
1276 | if (kbd_info.levels != 0) | |
1277 | return state->level; | |
1278 | ||
1279 | if (kbd_mode_levels_count > 0) { | |
1280 | for (i = 0; i < kbd_mode_levels_count; ++i) | |
1281 | if (kbd_mode_levels[i] == state->mode_bit) | |
1282 | return i; | |
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | return -EINVAL; | |
1287 | } | |
1288 | ||
1289 | static int kbd_set_level(struct kbd_state *state, u8 level) | |
1290 | { | |
1291 | if (kbd_info.levels != 0) { | |
1292 | if (level != 0) | |
1293 | kbd_previous_level = level; | |
1294 | if (state->level == level) | |
1295 | return 0; | |
1296 | state->level = level; | |
1297 | if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF) | |
1298 | state->mode_bit = kbd_previous_mode_bit; | |
1299 | else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) { | |
1300 | kbd_previous_mode_bit = state->mode_bit; | |
1301 | state->mode_bit = KBD_MODE_BIT_OFF; | |
1302 | } | |
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) { | |
1307 | if (level != 0) | |
1308 | kbd_previous_level = level; | |
1309 | state->mode_bit = kbd_mode_levels[level]; | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | return -EINVAL; | |
1314 | } | |
1315 | ||
1316 | static int kbd_get_state(struct kbd_state *state) | |
1317 | { | |
1318 | int ret; | |
1319 | ||
1320 | get_buffer(); | |
1321 | ||
1322 | buffer->input[0] = 0x1; | |
1323 | dell_send_request(buffer, 4, 11); | |
1324 | ret = buffer->output[0]; | |
1325 | ||
1326 | if (ret) { | |
1327 | ret = dell_smi_error(ret); | |
1328 | goto out; | |
1329 | } | |
1330 | ||
1331 | state->mode_bit = ffs(buffer->output[1] & 0xFFFF); | |
1332 | if (state->mode_bit != 0) | |
1333 | state->mode_bit--; | |
1334 | ||
1335 | state->triggers = (buffer->output[1] >> 16) & 0xFF; | |
1336 | state->timeout_value = (buffer->output[1] >> 24) & 0x3F; | |
1337 | state->timeout_unit = (buffer->output[1] >> 30) & 0x3; | |
1338 | state->als_setting = buffer->output[2] & 0xFF; | |
1339 | state->als_value = (buffer->output[2] >> 8) & 0xFF; | |
1340 | state->level = (buffer->output[2] >> 16) & 0xFF; | |
1341 | ||
1342 | out: | |
1343 | release_buffer(); | |
1344 | return ret; | |
1345 | } | |
1346 | ||
1347 | static int kbd_set_state(struct kbd_state *state) | |
1348 | { | |
1349 | int ret; | |
1350 | ||
1351 | get_buffer(); | |
1352 | buffer->input[0] = 0x2; | |
1353 | buffer->input[1] = BIT(state->mode_bit) & 0xFFFF; | |
1354 | buffer->input[1] |= (state->triggers & 0xFF) << 16; | |
1355 | buffer->input[1] |= (state->timeout_value & 0x3F) << 24; | |
1356 | buffer->input[1] |= (state->timeout_unit & 0x3) << 30; | |
1357 | buffer->input[2] = state->als_setting & 0xFF; | |
1358 | buffer->input[2] |= (state->level & 0xFF) << 16; | |
1359 | dell_send_request(buffer, 4, 11); | |
1360 | ret = buffer->output[0]; | |
1361 | release_buffer(); | |
1362 | ||
1363 | return dell_smi_error(ret); | |
1364 | } | |
1365 | ||
1366 | static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old) | |
1367 | { | |
1368 | int ret; | |
1369 | ||
1370 | ret = kbd_set_state(state); | |
1371 | if (ret == 0) | |
1372 | return 0; | |
1373 | ||
1374 | /* | |
1375 | * When setting the new state fails,try to restore the previous one. | |
1376 | * This is needed on some machines where BIOS sets a default state when | |
1377 | * setting a new state fails. This default state could be all off. | |
1378 | */ | |
1379 | ||
1380 | if (kbd_set_state(old)) | |
1381 | pr_err("Setting old previous keyboard state failed\n"); | |
1382 | ||
1383 | return ret; | |
1384 | } | |
1385 | ||
1386 | static int kbd_set_token_bit(u8 bit) | |
1387 | { | |
1388 | int id; | |
1389 | int ret; | |
1390 | ||
1391 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1392 | return -EINVAL; | |
1393 | ||
1394 | id = find_token_id(kbd_tokens[bit]); | |
1395 | if (id == -1) | |
1396 | return -EINVAL; | |
1397 | ||
1398 | get_buffer(); | |
1399 | buffer->input[0] = da_tokens[id].location; | |
1400 | buffer->input[1] = da_tokens[id].value; | |
1401 | dell_send_request(buffer, 1, 0); | |
1402 | ret = buffer->output[0]; | |
1403 | release_buffer(); | |
1404 | ||
1405 | return dell_smi_error(ret); | |
1406 | } | |
1407 | ||
1408 | static int kbd_get_token_bit(u8 bit) | |
1409 | { | |
1410 | int id; | |
1411 | int ret; | |
1412 | int val; | |
1413 | ||
1414 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1415 | return -EINVAL; | |
1416 | ||
1417 | id = find_token_id(kbd_tokens[bit]); | |
1418 | if (id == -1) | |
1419 | return -EINVAL; | |
1420 | ||
1421 | get_buffer(); | |
1422 | buffer->input[0] = da_tokens[id].location; | |
1423 | dell_send_request(buffer, 0, 0); | |
1424 | ret = buffer->output[0]; | |
1425 | val = buffer->output[1]; | |
1426 | release_buffer(); | |
1427 | ||
1428 | if (ret) | |
1429 | return dell_smi_error(ret); | |
1430 | ||
1431 | return (val == da_tokens[id].value); | |
1432 | } | |
1433 | ||
1434 | static int kbd_get_first_active_token_bit(void) | |
1435 | { | |
1436 | int i; | |
1437 | int ret; | |
1438 | ||
1439 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) { | |
1440 | ret = kbd_get_token_bit(i); | |
1441 | if (ret == 1) | |
1442 | return i; | |
1443 | } | |
1444 | ||
1445 | return ret; | |
1446 | } | |
1447 | ||
1448 | static int kbd_get_valid_token_counts(void) | |
1449 | { | |
1450 | return hweight16(kbd_token_bits); | |
1451 | } | |
1452 | ||
1453 | static inline int kbd_init_info(void) | |
1454 | { | |
1455 | struct kbd_state state; | |
1456 | int ret; | |
1457 | int i; | |
1458 | ||
1459 | ret = kbd_get_info(&kbd_info); | |
1460 | if (ret) | |
1461 | return ret; | |
1462 | ||
1463 | kbd_get_state(&state); | |
1464 | ||
1465 | /* NOTE: timeout value is stored in 6 bits so max value is 63 */ | |
1466 | if (kbd_info.seconds > 63) | |
1467 | kbd_info.seconds = 63; | |
1468 | if (kbd_info.minutes > 63) | |
1469 | kbd_info.minutes = 63; | |
1470 | if (kbd_info.hours > 63) | |
1471 | kbd_info.hours = 63; | |
1472 | if (kbd_info.days > 63) | |
1473 | kbd_info.days = 63; | |
1474 | ||
1475 | /* NOTE: On tested machines ON mode did not work and caused | |
1476 | * problems (turned backlight off) so do not use it | |
1477 | */ | |
1478 | kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON); | |
1479 | ||
1480 | kbd_previous_level = kbd_get_level(&state); | |
1481 | kbd_previous_mode_bit = state.mode_bit; | |
1482 | ||
1483 | if (kbd_previous_level == 0 && kbd_get_max_level() != 0) | |
1484 | kbd_previous_level = 1; | |
1485 | ||
1486 | if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) { | |
1487 | kbd_previous_mode_bit = | |
1488 | ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF)); | |
1489 | if (kbd_previous_mode_bit != 0) | |
1490 | kbd_previous_mode_bit--; | |
1491 | } | |
1492 | ||
1493 | if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) | | |
1494 | BIT(KBD_MODE_BIT_TRIGGER_ALS))) | |
1495 | kbd_als_supported = true; | |
1496 | ||
1497 | if (kbd_info.modes & ( | |
1498 | BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) | | |
1499 | BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) | | |
1500 | BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100) | |
1501 | )) | |
1502 | kbd_triggers_supported = true; | |
1503 | ||
1504 | /* kbd_mode_levels[0] is reserved, see below */ | |
1505 | for (i = 0; i < 16; ++i) | |
1506 | if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes)) | |
1507 | kbd_mode_levels[1 + kbd_mode_levels_count++] = i; | |
1508 | ||
1509 | /* | |
1510 | * Find the first supported mode and assign to kbd_mode_levels[0]. | |
1511 | * This should be 0 (off), but we cannot depend on the BIOS to | |
1512 | * support 0. | |
1513 | */ | |
1514 | if (kbd_mode_levels_count > 0) { | |
1515 | for (i = 0; i < 16; ++i) { | |
1516 | if (BIT(i) & kbd_info.modes) { | |
1517 | kbd_mode_levels[0] = i; | |
1518 | break; | |
1519 | } | |
1520 | } | |
1521 | kbd_mode_levels_count++; | |
1522 | } | |
1523 | ||
1524 | return 0; | |
1525 | ||
1526 | } | |
1527 | ||
1528 | static inline void kbd_init_tokens(void) | |
1529 | { | |
1530 | int i; | |
1531 | ||
1532 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) | |
1533 | if (find_token_id(kbd_tokens[i]) != -1) | |
1534 | kbd_token_bits |= BIT(i); | |
1535 | } | |
1536 | ||
1537 | static void kbd_init(void) | |
1538 | { | |
1539 | int ret; | |
1540 | ||
1541 | ret = kbd_init_info(); | |
1542 | kbd_init_tokens(); | |
1543 | ||
1544 | if (kbd_token_bits != 0 || ret == 0) | |
1545 | kbd_led_present = true; | |
1546 | } | |
1547 | ||
1548 | static ssize_t kbd_led_timeout_store(struct device *dev, | |
1549 | struct device_attribute *attr, | |
1550 | const char *buf, size_t count) | |
1551 | { | |
1552 | struct kbd_state new_state; | |
1553 | struct kbd_state state; | |
1554 | bool convert; | |
1555 | int value; | |
1556 | int ret; | |
1557 | char ch; | |
1558 | u8 unit; | |
1559 | int i; | |
1560 | ||
1561 | ret = sscanf(buf, "%d %c", &value, &ch); | |
1562 | if (ret < 1) | |
1563 | return -EINVAL; | |
1564 | else if (ret == 1) | |
1565 | ch = 's'; | |
1566 | ||
1567 | if (value < 0) | |
1568 | return -EINVAL; | |
1569 | ||
1570 | convert = false; | |
1571 | ||
1572 | switch (ch) { | |
1573 | case 's': | |
1574 | if (value > kbd_info.seconds) | |
1575 | convert = true; | |
1576 | unit = KBD_TIMEOUT_SECONDS; | |
1577 | break; | |
1578 | case 'm': | |
1579 | if (value > kbd_info.minutes) | |
1580 | convert = true; | |
1581 | unit = KBD_TIMEOUT_MINUTES; | |
1582 | break; | |
1583 | case 'h': | |
1584 | if (value > kbd_info.hours) | |
1585 | convert = true; | |
1586 | unit = KBD_TIMEOUT_HOURS; | |
1587 | break; | |
1588 | case 'd': | |
1589 | if (value > kbd_info.days) | |
1590 | convert = true; | |
1591 | unit = KBD_TIMEOUT_DAYS; | |
1592 | break; | |
1593 | default: | |
1594 | return -EINVAL; | |
1595 | } | |
1596 | ||
1597 | if (quirks && quirks->needs_kbd_timeouts) | |
1598 | convert = true; | |
1599 | ||
1600 | if (convert) { | |
1601 | /* Convert value from current units to seconds */ | |
1602 | switch (unit) { | |
1603 | case KBD_TIMEOUT_DAYS: | |
1604 | value *= 24; | |
1605 | case KBD_TIMEOUT_HOURS: | |
1606 | value *= 60; | |
1607 | case KBD_TIMEOUT_MINUTES: | |
1608 | value *= 60; | |
1609 | unit = KBD_TIMEOUT_SECONDS; | |
1610 | } | |
1611 | ||
1612 | if (quirks && quirks->needs_kbd_timeouts) { | |
1613 | for (i = 0; quirks->kbd_timeouts[i] != -1; i++) { | |
1614 | if (value <= quirks->kbd_timeouts[i]) { | |
1615 | value = quirks->kbd_timeouts[i]; | |
1616 | break; | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | if (value <= kbd_info.seconds && kbd_info.seconds) { | |
1622 | unit = KBD_TIMEOUT_SECONDS; | |
1623 | } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) { | |
1624 | value /= 60; | |
1625 | unit = KBD_TIMEOUT_MINUTES; | |
1626 | } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) { | |
1627 | value /= (60 * 60); | |
1628 | unit = KBD_TIMEOUT_HOURS; | |
1629 | } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) { | |
1630 | value /= (60 * 60 * 24); | |
1631 | unit = KBD_TIMEOUT_DAYS; | |
1632 | } else { | |
1633 | return -EINVAL; | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | ret = kbd_get_state(&state); | |
1638 | if (ret) | |
1639 | return ret; | |
1640 | ||
1641 | new_state = state; | |
1642 | new_state.timeout_value = value; | |
1643 | new_state.timeout_unit = unit; | |
1644 | ||
1645 | ret = kbd_set_state_safe(&new_state, &state); | |
1646 | if (ret) | |
1647 | return ret; | |
1648 | ||
1649 | return count; | |
1650 | } | |
1651 | ||
1652 | static ssize_t kbd_led_timeout_show(struct device *dev, | |
1653 | struct device_attribute *attr, char *buf) | |
1654 | { | |
1655 | struct kbd_state state; | |
1656 | int ret; | |
1657 | int len; | |
1658 | ||
1659 | ret = kbd_get_state(&state); | |
1660 | if (ret) | |
1661 | return ret; | |
1662 | ||
1663 | len = sprintf(buf, "%d", state.timeout_value); | |
1664 | ||
1665 | switch (state.timeout_unit) { | |
1666 | case KBD_TIMEOUT_SECONDS: | |
1667 | return len + sprintf(buf+len, "s\n"); | |
1668 | case KBD_TIMEOUT_MINUTES: | |
1669 | return len + sprintf(buf+len, "m\n"); | |
1670 | case KBD_TIMEOUT_HOURS: | |
1671 | return len + sprintf(buf+len, "h\n"); | |
1672 | case KBD_TIMEOUT_DAYS: | |
1673 | return len + sprintf(buf+len, "d\n"); | |
1674 | default: | |
1675 | return -EINVAL; | |
1676 | } | |
1677 | ||
1678 | return len; | |
1679 | } | |
1680 | ||
1681 | static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR, | |
1682 | kbd_led_timeout_show, kbd_led_timeout_store); | |
1683 | ||
1684 | static const char * const kbd_led_triggers[] = { | |
1685 | "keyboard", | |
1686 | "touchpad", | |
1687 | /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */ | |
1688 | "mouse", | |
1689 | }; | |
1690 | ||
1691 | static ssize_t kbd_led_triggers_store(struct device *dev, | |
1692 | struct device_attribute *attr, | |
1693 | const char *buf, size_t count) | |
1694 | { | |
1695 | struct kbd_state new_state; | |
1696 | struct kbd_state state; | |
1697 | bool triggers_enabled = false; | |
1698 | int trigger_bit = -1; | |
1699 | char trigger[21]; | |
1700 | int i, ret; | |
1701 | ||
1702 | ret = sscanf(buf, "%20s", trigger); | |
1703 | if (ret != 1) | |
1704 | return -EINVAL; | |
1705 | ||
1706 | if (trigger[0] != '+' && trigger[0] != '-') | |
1707 | return -EINVAL; | |
1708 | ||
1709 | ret = kbd_get_state(&state); | |
1710 | if (ret) | |
1711 | return ret; | |
1712 | ||
1713 | if (kbd_triggers_supported) | |
1714 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1715 | ||
1716 | if (kbd_triggers_supported) { | |
1717 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1718 | if (!(kbd_info.triggers & BIT(i))) | |
1719 | continue; | |
1720 | if (!kbd_led_triggers[i]) | |
1721 | continue; | |
1722 | if (strcmp(trigger+1, kbd_led_triggers[i]) != 0) | |
1723 | continue; | |
1724 | if (trigger[0] == '+' && | |
1725 | triggers_enabled && (state.triggers & BIT(i))) | |
1726 | return count; | |
1727 | if (trigger[0] == '-' && | |
1728 | (!triggers_enabled || !(state.triggers & BIT(i)))) | |
1729 | return count; | |
1730 | trigger_bit = i; | |
1731 | break; | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | if (trigger_bit != -1) { | |
1736 | new_state = state; | |
1737 | if (trigger[0] == '+') | |
1738 | new_state.triggers |= BIT(trigger_bit); | |
1739 | else { | |
1740 | new_state.triggers &= ~BIT(trigger_bit); | |
1741 | /* NOTE: trackstick bit (2) must be disabled when | |
1742 | * disabling touchpad bit (1), otherwise touchpad | |
1743 | * bit (1) will not be disabled */ | |
1744 | if (trigger_bit == 1) | |
1745 | new_state.triggers &= ~BIT(2); | |
1746 | } | |
1747 | if ((kbd_info.triggers & new_state.triggers) != | |
1748 | new_state.triggers) | |
1749 | return -EINVAL; | |
1750 | if (new_state.triggers && !triggers_enabled) { | |
1751 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1752 | kbd_set_level(&new_state, kbd_previous_level); | |
1753 | } else if (new_state.triggers == 0) { | |
1754 | kbd_set_level(&new_state, 0); | |
1755 | } | |
1756 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1757 | return -EINVAL; | |
1758 | ret = kbd_set_state_safe(&new_state, &state); | |
1759 | if (ret) | |
1760 | return ret; | |
1761 | if (new_state.mode_bit != KBD_MODE_BIT_OFF) | |
1762 | kbd_previous_mode_bit = new_state.mode_bit; | |
1763 | return count; | |
1764 | } | |
1765 | ||
1766 | return -EINVAL; | |
1767 | } | |
1768 | ||
1769 | static ssize_t kbd_led_triggers_show(struct device *dev, | |
1770 | struct device_attribute *attr, char *buf) | |
1771 | { | |
1772 | struct kbd_state state; | |
1773 | bool triggers_enabled; | |
1774 | int level, i, ret; | |
1775 | int len = 0; | |
1776 | ||
1777 | ret = kbd_get_state(&state); | |
1778 | if (ret) | |
1779 | return ret; | |
1780 | ||
1781 | len = 0; | |
1782 | ||
1783 | if (kbd_triggers_supported) { | |
1784 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1785 | level = kbd_get_level(&state); | |
1786 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1787 | if (!(kbd_info.triggers & BIT(i))) | |
1788 | continue; | |
1789 | if (!kbd_led_triggers[i]) | |
1790 | continue; | |
1791 | if ((triggers_enabled || level <= 0) && | |
1792 | (state.triggers & BIT(i))) | |
1793 | buf[len++] = '+'; | |
1794 | else | |
1795 | buf[len++] = '-'; | |
1796 | len += sprintf(buf+len, "%s ", kbd_led_triggers[i]); | |
1797 | } | |
1798 | } | |
1799 | ||
1800 | if (len) | |
1801 | buf[len - 1] = '\n'; | |
1802 | ||
1803 | return len; | |
1804 | } | |
1805 | ||
1806 | static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR, | |
1807 | kbd_led_triggers_show, kbd_led_triggers_store); | |
1808 | ||
1809 | static ssize_t kbd_led_als_enabled_store(struct device *dev, | |
1810 | struct device_attribute *attr, | |
1811 | const char *buf, size_t count) | |
1812 | { | |
1813 | struct kbd_state new_state; | |
1814 | struct kbd_state state; | |
1815 | bool triggers_enabled = false; | |
1816 | int enable; | |
1817 | int ret; | |
1818 | ||
1819 | ret = kstrtoint(buf, 0, &enable); | |
1820 | if (ret) | |
1821 | return ret; | |
1822 | ||
1823 | ret = kbd_get_state(&state); | |
1824 | if (ret) | |
1825 | return ret; | |
1826 | ||
1827 | if (enable == kbd_is_als_mode_bit(state.mode_bit)) | |
1828 | return count; | |
1829 | ||
1830 | new_state = state; | |
1831 | ||
1832 | if (kbd_triggers_supported) | |
1833 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1834 | ||
1835 | if (enable) { | |
1836 | if (triggers_enabled) | |
1837 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS; | |
1838 | else | |
1839 | new_state.mode_bit = KBD_MODE_BIT_ALS; | |
1840 | } else { | |
1841 | if (triggers_enabled) { | |
1842 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1843 | kbd_set_level(&new_state, kbd_previous_level); | |
1844 | } else { | |
1845 | new_state.mode_bit = KBD_MODE_BIT_ON; | |
1846 | } | |
1847 | } | |
1848 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1849 | return -EINVAL; | |
1850 | ||
1851 | ret = kbd_set_state_safe(&new_state, &state); | |
1852 | if (ret) | |
1853 | return ret; | |
1854 | kbd_previous_mode_bit = new_state.mode_bit; | |
1855 | ||
1856 | return count; | |
1857 | } | |
1858 | ||
1859 | static ssize_t kbd_led_als_enabled_show(struct device *dev, | |
1860 | struct device_attribute *attr, | |
1861 | char *buf) | |
1862 | { | |
1863 | struct kbd_state state; | |
1864 | bool enabled = false; | |
1865 | int ret; | |
1866 | ||
1867 | ret = kbd_get_state(&state); | |
1868 | if (ret) | |
1869 | return ret; | |
1870 | enabled = kbd_is_als_mode_bit(state.mode_bit); | |
1871 | ||
1872 | return sprintf(buf, "%d\n", enabled ? 1 : 0); | |
1873 | } | |
1874 | ||
1875 | static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR, | |
1876 | kbd_led_als_enabled_show, kbd_led_als_enabled_store); | |
1877 | ||
1878 | static ssize_t kbd_led_als_setting_store(struct device *dev, | |
1879 | struct device_attribute *attr, | |
1880 | const char *buf, size_t count) | |
1881 | { | |
1882 | struct kbd_state state; | |
1883 | struct kbd_state new_state; | |
1884 | u8 setting; | |
1885 | int ret; | |
1886 | ||
1887 | ret = kstrtou8(buf, 10, &setting); | |
1888 | if (ret) | |
1889 | return ret; | |
1890 | ||
1891 | ret = kbd_get_state(&state); | |
1892 | if (ret) | |
1893 | return ret; | |
1894 | ||
1895 | new_state = state; | |
1896 | new_state.als_setting = setting; | |
1897 | ||
1898 | ret = kbd_set_state_safe(&new_state, &state); | |
1899 | if (ret) | |
1900 | return ret; | |
1901 | ||
1902 | return count; | |
1903 | } | |
1904 | ||
1905 | static ssize_t kbd_led_als_setting_show(struct device *dev, | |
1906 | struct device_attribute *attr, | |
1907 | char *buf) | |
1908 | { | |
1909 | struct kbd_state state; | |
1910 | int ret; | |
1911 | ||
1912 | ret = kbd_get_state(&state); | |
1913 | if (ret) | |
1914 | return ret; | |
1915 | ||
1916 | return sprintf(buf, "%d\n", state.als_setting); | |
1917 | } | |
1918 | ||
1919 | static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR, | |
1920 | kbd_led_als_setting_show, kbd_led_als_setting_store); | |
1921 | ||
1922 | static struct attribute *kbd_led_attrs[] = { | |
1923 | &dev_attr_stop_timeout.attr, | |
1924 | &dev_attr_start_triggers.attr, | |
1925 | NULL, | |
1926 | }; | |
1927 | ||
1928 | static const struct attribute_group kbd_led_group = { | |
1929 | .attrs = kbd_led_attrs, | |
1930 | }; | |
1931 | ||
1932 | static struct attribute *kbd_led_als_attrs[] = { | |
1933 | &dev_attr_als_enabled.attr, | |
1934 | &dev_attr_als_setting.attr, | |
1935 | NULL, | |
1936 | }; | |
1937 | ||
1938 | static const struct attribute_group kbd_led_als_group = { | |
1939 | .attrs = kbd_led_als_attrs, | |
1940 | }; | |
1941 | ||
1942 | static const struct attribute_group *kbd_led_groups[] = { | |
1943 | &kbd_led_group, | |
1944 | &kbd_led_als_group, | |
1945 | NULL, | |
1946 | }; | |
1947 | ||
1948 | static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev) | |
1949 | { | |
1950 | int ret; | |
1951 | u16 num; | |
1952 | struct kbd_state state; | |
1953 | ||
1954 | if (kbd_get_max_level()) { | |
1955 | ret = kbd_get_state(&state); | |
1956 | if (ret) | |
1957 | return 0; | |
1958 | ret = kbd_get_level(&state); | |
1959 | if (ret < 0) | |
1960 | return 0; | |
1961 | return ret; | |
1962 | } | |
1963 | ||
1964 | if (kbd_get_valid_token_counts()) { | |
1965 | ret = kbd_get_first_active_token_bit(); | |
1966 | if (ret < 0) | |
1967 | return 0; | |
1968 | for (num = kbd_token_bits; num != 0 && ret > 0; --ret) | |
1969 | num &= num - 1; /* clear the first bit set */ | |
1970 | if (num == 0) | |
1971 | return 0; | |
1972 | return ffs(num) - 1; | |
1973 | } | |
1974 | ||
1975 | pr_warn("Keyboard brightness level control not supported\n"); | |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | static void kbd_led_level_set(struct led_classdev *led_cdev, | |
1980 | enum led_brightness value) | |
1981 | { | |
1982 | struct kbd_state state; | |
1983 | struct kbd_state new_state; | |
1984 | u16 num; | |
1985 | ||
1986 | if (kbd_get_max_level()) { | |
1987 | if (kbd_get_state(&state)) | |
1988 | return; | |
1989 | new_state = state; | |
1990 | if (kbd_set_level(&new_state, value)) | |
1991 | return; | |
1992 | kbd_set_state_safe(&new_state, &state); | |
1993 | return; | |
1994 | } | |
1995 | ||
1996 | if (kbd_get_valid_token_counts()) { | |
1997 | for (num = kbd_token_bits; num != 0 && value > 0; --value) | |
1998 | num &= num - 1; /* clear the first bit set */ | |
1999 | if (num == 0) | |
2000 | return; | |
2001 | kbd_set_token_bit(ffs(num) - 1); | |
2002 | return; | |
2003 | } | |
2004 | ||
2005 | pr_warn("Keyboard brightness level control not supported\n"); | |
2006 | } | |
2007 | ||
2008 | static struct led_classdev kbd_led = { | |
2009 | .name = "dell::kbd_backlight", | |
2010 | .brightness_set = kbd_led_level_set, | |
2011 | .brightness_get = kbd_led_level_get, | |
2012 | .groups = kbd_led_groups, | |
2013 | }; | |
2014 | ||
2015 | static int __init kbd_led_init(struct device *dev) | |
2016 | { | |
2017 | kbd_init(); | |
2018 | if (!kbd_led_present) | |
2019 | return -ENODEV; | |
2020 | if (!kbd_als_supported) | |
2021 | kbd_led_groups[1] = NULL; | |
2022 | kbd_led.max_brightness = kbd_get_max_level(); | |
2023 | if (!kbd_led.max_brightness) { | |
2024 | kbd_led.max_brightness = kbd_get_valid_token_counts(); | |
2025 | if (kbd_led.max_brightness) | |
2026 | kbd_led.max_brightness--; | |
2027 | } | |
2028 | return led_classdev_register(dev, &kbd_led); | |
2029 | } | |
2030 | ||
2031 | static void brightness_set_exit(struct led_classdev *led_cdev, | |
2032 | enum led_brightness value) | |
2033 | { | |
2034 | /* Don't change backlight level on exit */ | |
2035 | }; | |
2036 | ||
2037 | static void kbd_led_exit(void) | |
2038 | { | |
2039 | if (!kbd_led_present) | |
2040 | return; | |
2041 | kbd_led.brightness_set = brightness_set_exit; | |
2042 | led_classdev_unregister(&kbd_led); | |
2043 | } | |
2044 | ||
ad8f07cc MG |
2045 | static int __init dell_init(void) |
2046 | { | |
ad8f07cc MG |
2047 | int max_intensity = 0; |
2048 | int ret; | |
2049 | ||
2050 | if (!dmi_check_system(dell_device_table)) | |
2051 | return -ENODEV; | |
2052 | ||
2d8b90be AK |
2053 | quirks = NULL; |
2054 | /* find if this machine support other functions */ | |
2055 | dmi_check_system(dell_quirks); | |
2056 | ||
e7a19c56 | 2057 | dmi_walk(find_tokens, NULL); |
ad8f07cc MG |
2058 | |
2059 | if (!da_tokens) { | |
eb889524 | 2060 | pr_info("Unable to find dmi tokens\n"); |
ad8f07cc MG |
2061 | return -ENODEV; |
2062 | } | |
2063 | ||
ada3248a AJ |
2064 | ret = platform_driver_register(&platform_driver); |
2065 | if (ret) | |
2066 | goto fail_platform_driver; | |
2067 | platform_device = platform_device_alloc("dell-laptop", -1); | |
2068 | if (!platform_device) { | |
2069 | ret = -ENOMEM; | |
2070 | goto fail_platform_device1; | |
2071 | } | |
2072 | ret = platform_device_add(platform_device); | |
2073 | if (ret) | |
2074 | goto fail_platform_device2; | |
2075 | ||
116ee77b SH |
2076 | /* |
2077 | * Allocate buffer below 4GB for SMI data--only 32-bit physical addr | |
2078 | * is passed to SMI handler. | |
2079 | */ | |
b8830a4e PR |
2080 | buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32); |
2081 | if (!buffer) { | |
9f208202 | 2082 | ret = -ENOMEM; |
116ee77b | 2083 | goto fail_buffer; |
9f208202 | 2084 | } |
116ee77b | 2085 | |
4cc8a574 HG |
2086 | ret = dell_setup_rfkill(); |
2087 | ||
2088 | if (ret) { | |
2089 | pr_warn("Unable to setup rfkill\n"); | |
2090 | goto fail_rfkill; | |
2091 | } | |
2092 | ||
2d8b90be AK |
2093 | if (quirks && quirks->touchpad_led) |
2094 | touchpad_led_init(&platform_device->dev); | |
2095 | ||
6cff8d60 GM |
2096 | kbd_led_init(&platform_device->dev); |
2097 | ||
037accfa | 2098 | dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL); |
4cc8a574 HG |
2099 | if (dell_laptop_dir != NULL) |
2100 | debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL, | |
2101 | &dell_debugfs_fops); | |
037accfa | 2102 | |
ee4cfe28 | 2103 | if (acpi_video_get_backlight_type() != acpi_backlight_vendor) |
ad8f07cc | 2104 | return 0; |
ad8f07cc | 2105 | |
116ee77b SH |
2106 | get_buffer(); |
2107 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
2108 | if (buffer->input[0] != -1) { | |
2109 | dell_send_request(buffer, 0, 2); | |
2110 | max_intensity = buffer->output[3]; | |
ad8f07cc | 2111 | } |
116ee77b | 2112 | release_buffer(); |
ad8f07cc MG |
2113 | |
2114 | if (max_intensity) { | |
a19a6ee6 MG |
2115 | struct backlight_properties props; |
2116 | memset(&props, 0, sizeof(struct backlight_properties)); | |
bb7ca747 | 2117 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 MG |
2118 | props.max_brightness = max_intensity; |
2119 | dell_backlight_device = backlight_device_register("dell_backlight", | |
2120 | &platform_device->dev, | |
2121 | NULL, | |
2122 | &dell_ops, | |
2123 | &props); | |
ad8f07cc MG |
2124 | |
2125 | if (IS_ERR(dell_backlight_device)) { | |
2126 | ret = PTR_ERR(dell_backlight_device); | |
2127 | dell_backlight_device = NULL; | |
71e9dc73 | 2128 | goto fail_backlight; |
ad8f07cc MG |
2129 | } |
2130 | ||
ad8f07cc MG |
2131 | dell_backlight_device->props.brightness = |
2132 | dell_get_intensity(dell_backlight_device); | |
2133 | backlight_update_status(dell_backlight_device); | |
2134 | } | |
2135 | ||
2136 | return 0; | |
71e9dc73 AJ |
2137 | |
2138 | fail_backlight: | |
4cc8a574 HG |
2139 | dell_cleanup_rfkill(); |
2140 | fail_rfkill: | |
b8830a4e | 2141 | free_page((unsigned long)buffer); |
116ee77b | 2142 | fail_buffer: |
ada3248a AJ |
2143 | platform_device_del(platform_device); |
2144 | fail_platform_device2: | |
2145 | platform_device_put(platform_device); | |
2146 | fail_platform_device1: | |
2147 | platform_driver_unregister(&platform_driver); | |
2148 | fail_platform_driver: | |
ad8f07cc MG |
2149 | kfree(da_tokens); |
2150 | return ret; | |
2151 | } | |
2152 | ||
2153 | static void __exit dell_exit(void) | |
2154 | { | |
037accfa | 2155 | debugfs_remove_recursive(dell_laptop_dir); |
2d8b90be AK |
2156 | if (quirks && quirks->touchpad_led) |
2157 | touchpad_led_exit(); | |
6cff8d60 | 2158 | kbd_led_exit(); |
ad8f07cc | 2159 | backlight_device_unregister(dell_backlight_device); |
4cc8a574 | 2160 | dell_cleanup_rfkill(); |
facd61d7 | 2161 | if (platform_device) { |
92e00e47 | 2162 | platform_device_unregister(platform_device); |
facd61d7 MG |
2163 | platform_driver_unregister(&platform_driver); |
2164 | } | |
e551260b | 2165 | kfree(da_tokens); |
116ee77b | 2166 | free_page((unsigned long)buffer); |
ad8f07cc MG |
2167 | } |
2168 | ||
f8358578 PR |
2169 | /* dell-rbtn.c driver export functions which will not work correctly (and could |
2170 | * cause kernel crash) if they are called before dell-rbtn.c init code. This is | |
2171 | * not problem when dell-rbtn.c is compiled as external module. When both files | |
2172 | * (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we | |
2173 | * need to ensure that dell_init() will be called after initializing dell-rbtn. | |
2174 | * This can be achieved by late_initcall() instead module_init(). | |
2175 | */ | |
2176 | late_initcall(dell_init); | |
ad8f07cc MG |
2177 | module_exit(dell_exit); |
2178 | ||
2179 | MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); | |
6cff8d60 GM |
2180 | MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>"); |
2181 | MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); | |
ad8f07cc MG |
2182 | MODULE_DESCRIPTION("Dell laptop driver"); |
2183 | MODULE_LICENSE("GPL"); |