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 | |
ced53f6d PR |
312 | static void clear_buffer(void) |
313 | { | |
314 | memset(buffer, 0, sizeof(struct calling_interface_buffer)); | |
315 | } | |
316 | ||
116ee77b SH |
317 | static void get_buffer(void) |
318 | { | |
319 | mutex_lock(&buffer_mutex); | |
ced53f6d | 320 | clear_buffer(); |
116ee77b SH |
321 | } |
322 | ||
323 | static void release_buffer(void) | |
324 | { | |
325 | mutex_unlock(&buffer_mutex); | |
326 | } | |
327 | ||
4788df4c | 328 | static void __init parse_da_table(const struct dmi_header *dm) |
ad8f07cc MG |
329 | { |
330 | /* Final token is a terminator, so we don't want to copy it */ | |
331 | int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1; | |
fe9ab00f | 332 | struct calling_interface_token *new_da_tokens; |
ad8f07cc MG |
333 | struct calling_interface_structure *table = |
334 | container_of(dm, struct calling_interface_structure, header); | |
335 | ||
336 | /* 4 bytes of table header, plus 7 bytes of Dell header, plus at least | |
337 | 6 bytes of entry */ | |
338 | ||
339 | if (dm->length < 17) | |
340 | return; | |
341 | ||
342 | da_command_address = table->cmdIOAddress; | |
343 | da_command_code = table->cmdIOCode; | |
344 | ||
fe9ab00f DW |
345 | new_da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) * |
346 | sizeof(struct calling_interface_token), | |
347 | GFP_KERNEL); | |
ad8f07cc | 348 | |
fe9ab00f | 349 | if (!new_da_tokens) |
ad8f07cc | 350 | return; |
fe9ab00f | 351 | da_tokens = new_da_tokens; |
ad8f07cc MG |
352 | |
353 | memcpy(da_tokens+da_num_tokens, table->tokens, | |
354 | sizeof(struct calling_interface_token) * tokens); | |
355 | ||
356 | da_num_tokens += tokens; | |
357 | } | |
358 | ||
4788df4c | 359 | static void __init find_tokens(const struct dmi_header *dm, void *dummy) |
ad8f07cc MG |
360 | { |
361 | switch (dm->type) { | |
362 | case 0xd4: /* Indexed IO */ | |
ad8f07cc | 363 | case 0xd5: /* Protected Area Type 1 */ |
ad8f07cc MG |
364 | case 0xd6: /* Protected Area Type 2 */ |
365 | break; | |
366 | case 0xda: /* Calling interface */ | |
367 | parse_da_table(dm); | |
368 | break; | |
369 | } | |
370 | } | |
371 | ||
6cff8d60 | 372 | static int find_token_id(int tokenid) |
ad8f07cc MG |
373 | { |
374 | int i; | |
6cff8d60 | 375 | |
ad8f07cc MG |
376 | for (i = 0; i < da_num_tokens; i++) { |
377 | if (da_tokens[i].tokenID == tokenid) | |
6cff8d60 | 378 | return i; |
ad8f07cc MG |
379 | } |
380 | ||
381 | return -1; | |
382 | } | |
383 | ||
6cff8d60 GM |
384 | static int find_token_location(int tokenid) |
385 | { | |
386 | int id; | |
387 | ||
388 | id = find_token_id(tokenid); | |
389 | if (id == -1) | |
390 | return -1; | |
391 | ||
392 | return da_tokens[id].location; | |
393 | } | |
394 | ||
ad8f07cc MG |
395 | static struct calling_interface_buffer * |
396 | dell_send_request(struct calling_interface_buffer *buffer, int class, | |
397 | int select) | |
398 | { | |
399 | struct smi_cmd command; | |
400 | ||
401 | command.magic = SMI_CMD_MAGIC; | |
402 | command.command_address = da_command_address; | |
403 | command.command_code = da_command_code; | |
404 | command.ebx = virt_to_phys(buffer); | |
405 | command.ecx = 0x42534931; | |
406 | ||
407 | buffer->class = class; | |
408 | buffer->select = select; | |
409 | ||
410 | dcdbas_smi_request(&command); | |
411 | ||
412 | return buffer; | |
413 | } | |
414 | ||
6cff8d60 GM |
415 | static inline int dell_smi_error(int value) |
416 | { | |
417 | switch (value) { | |
418 | case 0: /* Completed successfully */ | |
419 | return 0; | |
420 | case -1: /* Completed with error */ | |
421 | return -EIO; | |
422 | case -2: /* Function not supported */ | |
423 | return -ENXIO; | |
424 | default: /* Unknown error */ | |
425 | return -EINVAL; | |
426 | } | |
427 | } | |
428 | ||
f992efbb PR |
429 | /* |
430 | * Derived from information in smbios-wireless-ctl: | |
431 | * | |
432 | * cbSelect 17, Value 11 | |
433 | * | |
434 | * Return Wireless Info | |
435 | * cbArg1, byte0 = 0x00 | |
436 | * | |
437 | * cbRes1 Standard return codes (0, -1, -2) | |
438 | * cbRes2 Info bit flags: | |
439 | * | |
440 | * 0 Hardware switch supported (1) | |
441 | * 1 WiFi locator supported (1) | |
442 | * 2 WLAN supported (1) | |
443 | * 3 Bluetooth (BT) supported (1) | |
444 | * 4 WWAN supported (1) | |
445 | * 5 Wireless KBD supported (1) | |
446 | * 6 Uw b supported (1) | |
447 | * 7 WiGig supported (1) | |
448 | * 8 WLAN installed (1) | |
449 | * 9 BT installed (1) | |
450 | * 10 WWAN installed (1) | |
451 | * 11 Uw b installed (1) | |
452 | * 12 WiGig installed (1) | |
453 | * 13-15 Reserved (0) | |
454 | * 16 Hardware (HW) switch is On (1) | |
455 | * 17 WLAN disabled (1) | |
456 | * 18 BT disabled (1) | |
457 | * 19 WWAN disabled (1) | |
458 | * 20 Uw b disabled (1) | |
459 | * 21 WiGig disabled (1) | |
460 | * 20-31 Reserved (0) | |
461 | * | |
462 | * cbRes3 NVRAM size in bytes | |
463 | * cbRes4, byte 0 NVRAM format version number | |
464 | * | |
465 | * | |
466 | * Set QuickSet Radio Disable Flag | |
467 | * cbArg1, byte0 = 0x01 | |
468 | * cbArg1, byte1 | |
469 | * Radio ID value: | |
470 | * 0 Radio Status | |
471 | * 1 WLAN ID | |
472 | * 2 BT ID | |
473 | * 3 WWAN ID | |
474 | * 4 UWB ID | |
475 | * 5 WIGIG ID | |
476 | * cbArg1, byte2 Flag bits: | |
477 | * 0 QuickSet disables radio (1) | |
478 | * 1-7 Reserved (0) | |
479 | * | |
480 | * cbRes1 Standard return codes (0, -1, -2) | |
481 | * cbRes2 QuickSet (QS) radio disable bit map: | |
482 | * 0 QS disables WLAN | |
483 | * 1 QS disables BT | |
484 | * 2 QS disables WWAN | |
485 | * 3 QS disables UWB | |
486 | * 4 QS disables WIGIG | |
487 | * 5-31 Reserved (0) | |
488 | * | |
489 | * Wireless Switch Configuration | |
490 | * cbArg1, byte0 = 0x02 | |
491 | * | |
492 | * cbArg1, byte1 | |
493 | * Subcommand: | |
494 | * 0 Get config | |
495 | * 1 Set config | |
496 | * 2 Set WiFi locator enable/disable | |
497 | * cbArg1,byte2 | |
498 | * Switch settings (if byte 1==1): | |
499 | * 0 WLAN sw itch control (1) | |
500 | * 1 BT sw itch control (1) | |
501 | * 2 WWAN sw itch control (1) | |
502 | * 3 UWB sw itch control (1) | |
503 | * 4 WiGig sw itch control (1) | |
504 | * 5-7 Reserved (0) | |
505 | * cbArg1, byte2 Enable bits (if byte 1==2): | |
506 | * 0 Enable WiFi locator (1) | |
507 | * | |
508 | * cbRes1 Standard return codes (0, -1, -2) | |
509 | * cbRes2 QuickSet radio disable bit map: | |
510 | * 0 WLAN controlled by sw itch (1) | |
511 | * 1 BT controlled by sw itch (1) | |
512 | * 2 WWAN controlled by sw itch (1) | |
513 | * 3 UWB controlled by sw itch (1) | |
514 | * 4 WiGig controlled by sw itch (1) | |
515 | * 5-6 Reserved (0) | |
516 | * 7 Wireless sw itch config locked (1) | |
517 | * 8 WiFi locator enabled (1) | |
518 | * 9-14 Reserved (0) | |
519 | * 15 WiFi locator setting locked (1) | |
520 | * 16-31 Reserved (0) | |
521 | * | |
522 | * Read Local Config Data (LCD) | |
523 | * cbArg1, byte0 = 0x10 | |
524 | * cbArg1, byte1 NVRAM index low byte | |
525 | * cbArg1, byte2 NVRAM index high byte | |
526 | * cbRes1 Standard return codes (0, -1, -2) | |
527 | * cbRes2 4 bytes read from LCD[index] | |
528 | * cbRes3 4 bytes read from LCD[index+4] | |
529 | * cbRes4 4 bytes read from LCD[index+8] | |
530 | * | |
531 | * Write Local Config Data (LCD) | |
532 | * cbArg1, byte0 = 0x11 | |
533 | * cbArg1, byte1 NVRAM index low byte | |
534 | * cbArg1, byte2 NVRAM index high byte | |
535 | * cbArg2 4 bytes to w rite at LCD[index] | |
536 | * cbArg3 4 bytes to w rite at LCD[index+4] | |
537 | * cbArg4 4 bytes to w rite at LCD[index+8] | |
538 | * cbRes1 Standard return codes (0, -1, -2) | |
539 | * | |
540 | * Populate Local Config Data from NVRAM | |
541 | * cbArg1, byte0 = 0x12 | |
542 | * cbRes1 Standard return codes (0, -1, -2) | |
543 | * | |
544 | * Commit Local Config Data to NVRAM | |
545 | * cbArg1, byte0 = 0x13 | |
546 | * cbRes1 Standard return codes (0, -1, -2) | |
547 | */ | |
4cc8a574 HG |
548 | |
549 | static int dell_rfkill_set(void *data, bool blocked) | |
550 | { | |
551 | int disable = blocked ? 1 : 0; | |
552 | unsigned long radio = (unsigned long)data; | |
553 | int hwswitch_bit = (unsigned long)data - 1; | |
22565ba0 PR |
554 | int hwswitch; |
555 | int status; | |
715d0cdd | 556 | int ret; |
4cc8a574 HG |
557 | |
558 | get_buffer(); | |
715d0cdd | 559 | |
4cc8a574 | 560 | dell_send_request(buffer, 17, 11); |
715d0cdd | 561 | ret = buffer->output[0]; |
22565ba0 | 562 | status = buffer->output[1]; |
715d0cdd PR |
563 | |
564 | if (ret != 0) | |
565 | goto out; | |
4cc8a574 | 566 | |
22565ba0 PR |
567 | clear_buffer(); |
568 | ||
569 | buffer->input[0] = 0x2; | |
570 | dell_send_request(buffer, 17, 11); | |
571 | ret = buffer->output[0]; | |
572 | hwswitch = buffer->output[1]; | |
573 | ||
4cc8a574 | 574 | /* If the hardware switch controls this radio, and the hardware |
ed112898 | 575 | switch is disabled, always disable the radio */ |
22565ba0 PR |
576 | if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) && |
577 | (status & BIT(0)) && !(status & BIT(16))) | |
ed112898 | 578 | disable = 1; |
4cc8a574 | 579 | |
ced53f6d PR |
580 | clear_buffer(); |
581 | ||
4cc8a574 HG |
582 | buffer->input[0] = (1 | (radio<<8) | (disable << 16)); |
583 | dell_send_request(buffer, 17, 11); | |
715d0cdd | 584 | ret = buffer->output[0]; |
4cc8a574 | 585 | |
715d0cdd | 586 | out: |
4cc8a574 | 587 | release_buffer(); |
715d0cdd | 588 | return dell_smi_error(ret); |
4cc8a574 HG |
589 | } |
590 | ||
04c9a3a0 | 591 | /* Must be called with the buffer held */ |
33f9359a HG |
592 | static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, |
593 | int status) | |
d038880e | 594 | { |
04c9a3a0 HG |
595 | if (status & BIT(0)) { |
596 | /* Has hw-switch, sync sw_state to BIOS */ | |
597 | int block = rfkill_blocked(rfkill); | |
ced53f6d | 598 | clear_buffer(); |
04c9a3a0 HG |
599 | buffer->input[0] = (1 | (radio << 8) | (block << 16)); |
600 | dell_send_request(buffer, 17, 11); | |
601 | } else { | |
3f56588a HG |
602 | /* No hw-switch, sync BIOS state to sw_state */ |
603 | rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); | |
604 | } | |
33f9359a | 605 | } |
d038880e | 606 | |
33f9359a | 607 | static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio, |
22565ba0 | 608 | int status, int hwswitch) |
33f9359a | 609 | { |
22565ba0 | 610 | if (hwswitch & (BIT(radio - 1))) |
d038880e HG |
611 | rfkill_set_hw_state(rfkill, !(status & BIT(16))); |
612 | } | |
613 | ||
4cc8a574 HG |
614 | static void dell_rfkill_query(struct rfkill *rfkill, void *data) |
615 | { | |
22565ba0 PR |
616 | int radio = ((unsigned long)data & 0xF); |
617 | int hwswitch; | |
4cc8a574 | 618 | int status; |
715d0cdd | 619 | int ret; |
4cc8a574 HG |
620 | |
621 | get_buffer(); | |
22565ba0 | 622 | |
4cc8a574 | 623 | dell_send_request(buffer, 17, 11); |
715d0cdd | 624 | ret = buffer->output[0]; |
4cc8a574 | 625 | status = buffer->output[1]; |
22565ba0 PR |
626 | |
627 | if (ret != 0 || !(status & BIT(0))) { | |
628 | release_buffer(); | |
629 | return; | |
630 | } | |
631 | ||
632 | clear_buffer(); | |
633 | ||
634 | buffer->input[0] = 0x2; | |
635 | dell_send_request(buffer, 17, 11); | |
636 | ret = buffer->output[0]; | |
637 | hwswitch = buffer->output[1]; | |
638 | ||
715d0cdd | 639 | release_buffer(); |
4cc8a574 | 640 | |
715d0cdd PR |
641 | if (ret != 0) |
642 | return; | |
04c9a3a0 | 643 | |
22565ba0 | 644 | dell_rfkill_update_hw_state(rfkill, radio, status, hwswitch); |
4cc8a574 HG |
645 | } |
646 | ||
647 | static const struct rfkill_ops dell_rfkill_ops = { | |
648 | .set_block = dell_rfkill_set, | |
649 | .query = dell_rfkill_query, | |
650 | }; | |
651 | ||
037accfa KYL |
652 | static struct dentry *dell_laptop_dir; |
653 | ||
654 | static int dell_debugfs_show(struct seq_file *s, void *data) | |
655 | { | |
22565ba0 PR |
656 | int hwswitch_state; |
657 | int hwswitch_ret; | |
037accfa | 658 | int status; |
715d0cdd | 659 | int ret; |
037accfa KYL |
660 | |
661 | get_buffer(); | |
22565ba0 | 662 | |
037accfa | 663 | dell_send_request(buffer, 17, 11); |
715d0cdd | 664 | ret = buffer->output[0]; |
037accfa | 665 | status = buffer->output[1]; |
22565ba0 PR |
666 | |
667 | clear_buffer(); | |
668 | ||
669 | buffer->input[0] = 0x2; | |
670 | dell_send_request(buffer, 17, 11); | |
671 | hwswitch_ret = buffer->output[0]; | |
672 | hwswitch_state = buffer->output[1]; | |
673 | ||
037accfa KYL |
674 | release_buffer(); |
675 | ||
715d0cdd | 676 | seq_printf(s, "return:\t%d\n", ret); |
037accfa KYL |
677 | seq_printf(s, "status:\t0x%X\n", status); |
678 | seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n", | |
679 | status & BIT(0)); | |
680 | seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n", | |
681 | (status & BIT(1)) >> 1); | |
682 | seq_printf(s, "Bit 2 : Wifi is supported: %lu\n", | |
683 | (status & BIT(2)) >> 2); | |
684 | seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n", | |
685 | (status & BIT(3)) >> 3); | |
686 | seq_printf(s, "Bit 4 : WWAN is supported: %lu\n", | |
687 | (status & BIT(4)) >> 4); | |
688 | seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", | |
689 | (status & BIT(5)) >> 5); | |
2e19f93f PR |
690 | seq_printf(s, "Bit 6 : UWB supported: %lu\n", |
691 | (status & BIT(6)) >> 6); | |
692 | seq_printf(s, "Bit 7 : WiGig supported: %lu\n", | |
693 | (status & BIT(7)) >> 7); | |
037accfa KYL |
694 | seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", |
695 | (status & BIT(8)) >> 8); | |
696 | seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", | |
697 | (status & BIT(9)) >> 9); | |
698 | seq_printf(s, "Bit 10: WWAN is installed: %lu\n", | |
699 | (status & BIT(10)) >> 10); | |
2e19f93f PR |
700 | seq_printf(s, "Bit 11: UWB installed: %lu\n", |
701 | (status & BIT(11)) >> 11); | |
702 | seq_printf(s, "Bit 12: WiGig installed: %lu\n", | |
703 | (status & BIT(12)) >> 12); | |
704 | ||
037accfa KYL |
705 | seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", |
706 | (status & BIT(16)) >> 16); | |
707 | seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", | |
708 | (status & BIT(17)) >> 17); | |
709 | seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n", | |
710 | (status & BIT(18)) >> 18); | |
711 | seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", | |
712 | (status & BIT(19)) >> 19); | |
2e19f93f PR |
713 | seq_printf(s, "Bit 20: UWB is blocked: %lu\n", |
714 | (status & BIT(20)) >> 20); | |
715 | seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", | |
716 | (status & BIT(21)) >> 21); | |
037accfa | 717 | |
22565ba0 PR |
718 | seq_printf(s, "\nhwswitch_return:\t%d\n", hwswitch_ret); |
719 | seq_printf(s, "hwswitch_state:\t0x%X\n", hwswitch_state); | |
037accfa KYL |
720 | seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", |
721 | hwswitch_state & BIT(0)); | |
722 | seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n", | |
723 | (hwswitch_state & BIT(1)) >> 1); | |
724 | seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", | |
725 | (hwswitch_state & BIT(2)) >> 2); | |
2e19f93f PR |
726 | seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", |
727 | (hwswitch_state & BIT(3)) >> 3); | |
728 | seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", | |
729 | (hwswitch_state & BIT(4)) >> 4); | |
037accfa KYL |
730 | seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", |
731 | (hwswitch_state & BIT(7)) >> 7); | |
732 | seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", | |
733 | (hwswitch_state & BIT(8)) >> 8); | |
734 | seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n", | |
735 | (hwswitch_state & BIT(15)) >> 15); | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
740 | static int dell_debugfs_open(struct inode *inode, struct file *file) | |
741 | { | |
742 | return single_open(file, dell_debugfs_show, inode->i_private); | |
743 | } | |
744 | ||
745 | static const struct file_operations dell_debugfs_fops = { | |
746 | .owner = THIS_MODULE, | |
747 | .open = dell_debugfs_open, | |
748 | .read = seq_read, | |
749 | .llseek = seq_lseek, | |
750 | .release = single_release, | |
751 | }; | |
752 | ||
4cc8a574 HG |
753 | static void dell_update_rfkill(struct work_struct *ignored) |
754 | { | |
22565ba0 | 755 | int hwswitch = 0; |
d038880e | 756 | int status; |
715d0cdd | 757 | int ret; |
d038880e HG |
758 | |
759 | get_buffer(); | |
715d0cdd | 760 | |
d038880e | 761 | dell_send_request(buffer, 17, 11); |
715d0cdd | 762 | ret = buffer->output[0]; |
d038880e | 763 | status = buffer->output[1]; |
d038880e | 764 | |
715d0cdd PR |
765 | if (ret != 0) |
766 | goto out; | |
767 | ||
22565ba0 PR |
768 | clear_buffer(); |
769 | ||
770 | buffer->input[0] = 0x2; | |
771 | dell_send_request(buffer, 17, 11); | |
772 | ret = buffer->output[0]; | |
773 | ||
774 | if (ret == 0 && (status & BIT(0))) | |
775 | hwswitch = buffer->output[1]; | |
776 | ||
33f9359a | 777 | if (wifi_rfkill) { |
22565ba0 | 778 | dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch); |
33f9359a HG |
779 | dell_rfkill_update_sw_state(wifi_rfkill, 1, status); |
780 | } | |
781 | if (bluetooth_rfkill) { | |
22565ba0 PR |
782 | dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status, |
783 | hwswitch); | |
33f9359a HG |
784 | dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status); |
785 | } | |
786 | if (wwan_rfkill) { | |
22565ba0 | 787 | dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch); |
33f9359a HG |
788 | dell_rfkill_update_sw_state(wwan_rfkill, 3, status); |
789 | } | |
04c9a3a0 | 790 | |
715d0cdd | 791 | out: |
04c9a3a0 | 792 | release_buffer(); |
4cc8a574 HG |
793 | } |
794 | static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); | |
795 | ||
97f440c2 HG |
796 | static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, |
797 | struct serio *port) | |
798 | { | |
799 | static bool extended; | |
800 | ||
98280374 | 801 | if (str & I8042_STR_AUXDATA) |
97f440c2 HG |
802 | return false; |
803 | ||
804 | if (unlikely(data == 0xe0)) { | |
805 | extended = true; | |
806 | return false; | |
807 | } else if (unlikely(extended)) { | |
808 | switch (data) { | |
809 | case 0x8: | |
810 | schedule_delayed_work(&dell_rfkill_work, | |
811 | round_jiffies_relative(HZ / 4)); | |
812 | break; | |
813 | } | |
814 | extended = false; | |
815 | } | |
816 | ||
817 | return false; | |
818 | } | |
4cc8a574 | 819 | |
f8358578 PR |
820 | static int (*dell_rbtn_notifier_register_func)(struct notifier_block *); |
821 | static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *); | |
822 | ||
823 | static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb, | |
824 | unsigned long action, void *data) | |
825 | { | |
826 | schedule_delayed_work(&dell_rfkill_work, 0); | |
827 | return NOTIFY_OK; | |
828 | } | |
829 | ||
830 | static struct notifier_block dell_laptop_rbtn_notifier = { | |
831 | .notifier_call = dell_laptop_rbtn_notifier_call, | |
832 | }; | |
833 | ||
4cc8a574 HG |
834 | static int __init dell_setup_rfkill(void) |
835 | { | |
ba5194f1 | 836 | int status, ret, whitelisted; |
2a925518 HG |
837 | const char *product; |
838 | ||
839 | /* | |
ba5194f1 HG |
840 | * rfkill support causes trouble on various models, mostly Inspirons. |
841 | * So we whitelist certain series, and don't support rfkill on others. | |
2a925518 | 842 | */ |
ba5194f1 | 843 | whitelisted = 0; |
2a925518 | 844 | product = dmi_get_system_info(DMI_PRODUCT_NAME); |
ba5194f1 HG |
845 | if (product && (strncmp(product, "Latitude", 8) == 0 || |
846 | strncmp(product, "Precision", 9) == 0)) | |
847 | whitelisted = 1; | |
848 | if (!force_rfkill && !whitelisted) | |
4cc8a574 | 849 | return 0; |
4cc8a574 HG |
850 | |
851 | get_buffer(); | |
852 | dell_send_request(buffer, 17, 11); | |
715d0cdd | 853 | ret = buffer->output[0]; |
4cc8a574 | 854 | status = buffer->output[1]; |
4cc8a574 HG |
855 | release_buffer(); |
856 | ||
715d0cdd PR |
857 | /* dell wireless info smbios call is not supported */ |
858 | if (ret != 0) | |
859 | return 0; | |
860 | ||
22565ba0 PR |
861 | /* rfkill is only tested on laptops with a hwswitch */ |
862 | if (!(status & BIT(0)) && !force_rfkill) | |
863 | return 0; | |
2bd4ac13 | 864 | |
4cc8a574 HG |
865 | if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { |
866 | wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, | |
867 | RFKILL_TYPE_WLAN, | |
868 | &dell_rfkill_ops, (void *) 1); | |
869 | if (!wifi_rfkill) { | |
870 | ret = -ENOMEM; | |
871 | goto err_wifi; | |
872 | } | |
873 | ret = rfkill_register(wifi_rfkill); | |
874 | if (ret) | |
875 | goto err_wifi; | |
876 | } | |
877 | ||
878 | if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { | |
879 | bluetooth_rfkill = rfkill_alloc("dell-bluetooth", | |
880 | &platform_device->dev, | |
881 | RFKILL_TYPE_BLUETOOTH, | |
882 | &dell_rfkill_ops, (void *) 2); | |
883 | if (!bluetooth_rfkill) { | |
884 | ret = -ENOMEM; | |
885 | goto err_bluetooth; | |
886 | } | |
887 | ret = rfkill_register(bluetooth_rfkill); | |
888 | if (ret) | |
889 | goto err_bluetooth; | |
890 | } | |
891 | ||
892 | if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { | |
893 | wwan_rfkill = rfkill_alloc("dell-wwan", | |
894 | &platform_device->dev, | |
895 | RFKILL_TYPE_WWAN, | |
896 | &dell_rfkill_ops, (void *) 3); | |
897 | if (!wwan_rfkill) { | |
898 | ret = -ENOMEM; | |
899 | goto err_wwan; | |
900 | } | |
901 | ret = rfkill_register(wwan_rfkill); | |
902 | if (ret) | |
903 | goto err_wwan; | |
904 | } | |
905 | ||
f8358578 PR |
906 | /* |
907 | * Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices | |
908 | * which can receive events from HW slider switch. | |
909 | * | |
910 | * Dell SMBIOS on whitelisted models supports controlling radio devices | |
911 | * but does not support receiving HW button switch events. We can use | |
912 | * i8042 filter hook function to receive keyboard data and handle | |
913 | * keycode for HW button. | |
914 | * | |
915 | * So if it is possible we will use Dell Airplane Mode Switch ACPI | |
916 | * driver for receiving HW events and Dell SMBIOS for setting rfkill | |
917 | * states. If ACPI driver or device is not available we will fallback to | |
918 | * i8042 filter hook function. | |
919 | * | |
920 | * To prevent duplicate rfkill devices which control and do same thing, | |
921 | * dell-rbtn driver will automatically remove its own rfkill devices | |
922 | * once function dell_rbtn_notifier_register() is called. | |
923 | */ | |
924 | ||
925 | dell_rbtn_notifier_register_func = | |
926 | symbol_request(dell_rbtn_notifier_register); | |
927 | if (dell_rbtn_notifier_register_func) { | |
928 | dell_rbtn_notifier_unregister_func = | |
929 | symbol_request(dell_rbtn_notifier_unregister); | |
930 | if (!dell_rbtn_notifier_unregister_func) { | |
931 | symbol_put(dell_rbtn_notifier_register); | |
932 | dell_rbtn_notifier_register_func = NULL; | |
933 | } | |
934 | } | |
935 | ||
936 | if (dell_rbtn_notifier_register_func) { | |
937 | ret = dell_rbtn_notifier_register_func( | |
938 | &dell_laptop_rbtn_notifier); | |
939 | symbol_put(dell_rbtn_notifier_register); | |
940 | dell_rbtn_notifier_register_func = NULL; | |
941 | if (ret != 0) { | |
942 | symbol_put(dell_rbtn_notifier_unregister); | |
943 | dell_rbtn_notifier_unregister_func = NULL; | |
944 | } | |
945 | } else { | |
946 | pr_info("Symbols from dell-rbtn acpi driver are not available\n"); | |
947 | ret = -ENODEV; | |
948 | } | |
949 | ||
950 | if (ret == 0) { | |
951 | pr_info("Using dell-rbtn acpi driver for receiving events\n"); | |
952 | } else if (ret != -ENODEV) { | |
953 | pr_warn("Unable to register dell rbtn notifier\n"); | |
97f440c2 | 954 | goto err_filter; |
f8358578 PR |
955 | } else { |
956 | ret = i8042_install_filter(dell_laptop_i8042_filter); | |
957 | if (ret) { | |
958 | pr_warn("Unable to install key filter\n"); | |
959 | goto err_filter; | |
960 | } | |
961 | pr_info("Using i8042 filter function for receiving events\n"); | |
97f440c2 HG |
962 | } |
963 | ||
4cc8a574 | 964 | return 0; |
97f440c2 HG |
965 | err_filter: |
966 | if (wwan_rfkill) | |
967 | rfkill_unregister(wwan_rfkill); | |
4cc8a574 HG |
968 | err_wwan: |
969 | rfkill_destroy(wwan_rfkill); | |
970 | if (bluetooth_rfkill) | |
971 | rfkill_unregister(bluetooth_rfkill); | |
972 | err_bluetooth: | |
973 | rfkill_destroy(bluetooth_rfkill); | |
974 | if (wifi_rfkill) | |
975 | rfkill_unregister(wifi_rfkill); | |
976 | err_wifi: | |
977 | rfkill_destroy(wifi_rfkill); | |
978 | ||
979 | return ret; | |
980 | } | |
981 | ||
982 | static void dell_cleanup_rfkill(void) | |
983 | { | |
f8358578 PR |
984 | if (dell_rbtn_notifier_unregister_func) { |
985 | dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier); | |
986 | symbol_put(dell_rbtn_notifier_unregister); | |
987 | dell_rbtn_notifier_unregister_func = NULL; | |
988 | } else { | |
989 | i8042_remove_filter(dell_laptop_i8042_filter); | |
990 | } | |
991 | cancel_delayed_work_sync(&dell_rfkill_work); | |
4cc8a574 HG |
992 | if (wifi_rfkill) { |
993 | rfkill_unregister(wifi_rfkill); | |
994 | rfkill_destroy(wifi_rfkill); | |
995 | } | |
996 | if (bluetooth_rfkill) { | |
997 | rfkill_unregister(bluetooth_rfkill); | |
998 | rfkill_destroy(bluetooth_rfkill); | |
999 | } | |
1000 | if (wwan_rfkill) { | |
1001 | rfkill_unregister(wwan_rfkill); | |
1002 | rfkill_destroy(wwan_rfkill); | |
1003 | } | |
1004 | } | |
1005 | ||
ad8f07cc MG |
1006 | static int dell_send_intensity(struct backlight_device *bd) |
1007 | { | |
715d0cdd PR |
1008 | int token; |
1009 | int ret; | |
1010 | ||
1011 | token = find_token_location(BRIGHTNESS_TOKEN); | |
1012 | if (token == -1) | |
1013 | return -ENODEV; | |
ad8f07cc | 1014 | |
116ee77b | 1015 | get_buffer(); |
715d0cdd | 1016 | buffer->input[0] = token; |
116ee77b | 1017 | buffer->input[1] = bd->props.brightness; |
ad8f07cc | 1018 | |
ad8f07cc | 1019 | if (power_supply_is_system_supplied() > 0) |
116ee77b | 1020 | dell_send_request(buffer, 1, 2); |
ad8f07cc | 1021 | else |
116ee77b | 1022 | dell_send_request(buffer, 1, 1); |
ad8f07cc | 1023 | |
715d0cdd PR |
1024 | ret = dell_smi_error(buffer->output[0]); |
1025 | ||
116ee77b | 1026 | release_buffer(); |
7da8fb27 | 1027 | return ret; |
ad8f07cc MG |
1028 | } |
1029 | ||
1030 | static int dell_get_intensity(struct backlight_device *bd) | |
1031 | { | |
715d0cdd PR |
1032 | int token; |
1033 | int ret; | |
ad8f07cc | 1034 | |
715d0cdd PR |
1035 | token = find_token_location(BRIGHTNESS_TOKEN); |
1036 | if (token == -1) | |
1037 | return -ENODEV; | |
ad8f07cc | 1038 | |
715d0cdd PR |
1039 | get_buffer(); |
1040 | buffer->input[0] = token; | |
ad8f07cc MG |
1041 | |
1042 | if (power_supply_is_system_supplied() > 0) | |
116ee77b | 1043 | dell_send_request(buffer, 0, 2); |
ad8f07cc | 1044 | else |
116ee77b | 1045 | dell_send_request(buffer, 0, 1); |
ad8f07cc | 1046 | |
715d0cdd PR |
1047 | if (buffer->output[0]) |
1048 | ret = dell_smi_error(buffer->output[0]); | |
1049 | else | |
1050 | ret = buffer->output[1]; | |
b486742a | 1051 | |
116ee77b | 1052 | release_buffer(); |
b486742a | 1053 | return ret; |
ad8f07cc MG |
1054 | } |
1055 | ||
acc2472e | 1056 | static const struct backlight_ops dell_ops = { |
ad8f07cc MG |
1057 | .get_brightness = dell_get_intensity, |
1058 | .update_status = dell_send_intensity, | |
1059 | }; | |
1060 | ||
869f8dfa | 1061 | static void touchpad_led_on(void) |
2d8b90be AK |
1062 | { |
1063 | int command = 0x97; | |
1064 | char data = 1; | |
1065 | i8042_command(&data, command | 1 << 12); | |
1066 | } | |
1067 | ||
869f8dfa | 1068 | static void touchpad_led_off(void) |
2d8b90be AK |
1069 | { |
1070 | int command = 0x97; | |
1071 | char data = 2; | |
1072 | i8042_command(&data, command | 1 << 12); | |
1073 | } | |
1074 | ||
1075 | static void touchpad_led_set(struct led_classdev *led_cdev, | |
1076 | enum led_brightness value) | |
1077 | { | |
1078 | if (value > 0) | |
1079 | touchpad_led_on(); | |
1080 | else | |
1081 | touchpad_led_off(); | |
1082 | } | |
1083 | ||
1084 | static struct led_classdev touchpad_led = { | |
1085 | .name = "dell-laptop::touchpad", | |
1086 | .brightness_set = touchpad_led_set, | |
2d5de9e8 | 1087 | .flags = LED_CORE_SUSPENDRESUME, |
2d8b90be AK |
1088 | }; |
1089 | ||
681480cc | 1090 | static int __init touchpad_led_init(struct device *dev) |
2d8b90be AK |
1091 | { |
1092 | return led_classdev_register(dev, &touchpad_led); | |
1093 | } | |
1094 | ||
1095 | static void touchpad_led_exit(void) | |
1096 | { | |
1097 | led_classdev_unregister(&touchpad_led); | |
1098 | } | |
1099 | ||
6cff8d60 GM |
1100 | /* |
1101 | * Derived from information in smbios-keyboard-ctl: | |
1102 | * | |
1103 | * cbClass 4 | |
1104 | * cbSelect 11 | |
1105 | * Keyboard illumination | |
1106 | * cbArg1 determines the function to be performed | |
1107 | * | |
1108 | * cbArg1 0x0 = Get Feature Information | |
1109 | * cbRES1 Standard return codes (0, -1, -2) | |
1110 | * cbRES2, word0 Bitmap of user-selectable modes | |
1111 | * bit 0 Always off (All systems) | |
1112 | * bit 1 Always on (Travis ATG, Siberia) | |
1113 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1114 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1115 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1116 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1117 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1118 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1119 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1120 | * bits 9-15 Reserved for future use | |
1121 | * cbRES2, byte2 Reserved for future use | |
1122 | * cbRES2, byte3 Keyboard illumination type | |
1123 | * 0 Reserved | |
1124 | * 1 Tasklight | |
1125 | * 2 Backlight | |
1126 | * 3-255 Reserved for future use | |
1127 | * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap. | |
1128 | * bit 0 Any keystroke | |
1129 | * bit 1 Touchpad activity | |
1130 | * bit 2 Pointing stick | |
1131 | * bit 3 Any mouse | |
1132 | * bits 4-7 Reserved for future use | |
1133 | * cbRES3, byte1 Supported timeout unit bitmap | |
1134 | * bit 0 Seconds | |
1135 | * bit 1 Minutes | |
1136 | * bit 2 Hours | |
1137 | * bit 3 Days | |
1138 | * bits 4-7 Reserved for future use | |
1139 | * cbRES3, byte2 Number of keyboard light brightness levels | |
1140 | * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported). | |
1141 | * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported). | |
1142 | * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported). | |
1143 | * cbRES4, byte3 Maximum acceptable days value (0 if days not supported) | |
1144 | * | |
1145 | * cbArg1 0x1 = Get Current State | |
1146 | * cbRES1 Standard return codes (0, -1, -2) | |
1147 | * cbRES2, word0 Bitmap of current mode state | |
1148 | * bit 0 Always off (All systems) | |
1149 | * bit 1 Always on (Travis ATG, Siberia) | |
1150 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1151 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1152 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1153 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1154 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1155 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1156 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1157 | * bits 9-15 Reserved for future use | |
1158 | * Note: Only One bit can be set | |
1159 | * cbRES2, byte2 Currently active auto keyboard illumination triggers. | |
1160 | * bit 0 Any keystroke | |
1161 | * bit 1 Touchpad activity | |
1162 | * bit 2 Pointing stick | |
1163 | * bit 3 Any mouse | |
1164 | * bits 4-7 Reserved for future use | |
1165 | * cbRES2, byte3 Current Timeout | |
1166 | * bits 7:6 Timeout units indicator: | |
1167 | * 00b Seconds | |
1168 | * 01b Minutes | |
1169 | * 10b Hours | |
1170 | * 11b Days | |
1171 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1172 | * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte | |
1173 | * are set upon return from the [Get feature information] call. | |
1174 | * cbRES3, byte0 Current setting of ALS value that turns the light on or off. | |
1175 | * cbRES3, byte1 Current ALS reading | |
1176 | * cbRES3, byte2 Current keyboard light level. | |
1177 | * | |
1178 | * cbArg1 0x2 = Set New State | |
1179 | * cbRES1 Standard return codes (0, -1, -2) | |
1180 | * cbArg2, word0 Bitmap of current mode state | |
1181 | * bit 0 Always off (All systems) | |
1182 | * bit 1 Always on (Travis ATG, Siberia) | |
1183 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1184 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1185 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1186 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1187 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1188 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1189 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1190 | * bits 9-15 Reserved for future use | |
1191 | * Note: Only One bit can be set | |
1192 | * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow | |
1193 | * keyboard to turn off automatically. | |
1194 | * bit 0 Any keystroke | |
1195 | * bit 1 Touchpad activity | |
1196 | * bit 2 Pointing stick | |
1197 | * bit 3 Any mouse | |
1198 | * bits 4-7 Reserved for future use | |
1199 | * cbArg2, byte3 Desired Timeout | |
1200 | * bits 7:6 Timeout units indicator: | |
1201 | * 00b Seconds | |
1202 | * 01b Minutes | |
1203 | * 10b Hours | |
1204 | * 11b Days | |
1205 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1206 | * cbArg3, byte0 Desired setting of ALS value that turns the light on or off. | |
1207 | * cbArg3, byte2 Desired keyboard light level. | |
1208 | */ | |
1209 | ||
1210 | ||
1211 | enum kbd_timeout_unit { | |
1212 | KBD_TIMEOUT_SECONDS = 0, | |
1213 | KBD_TIMEOUT_MINUTES, | |
1214 | KBD_TIMEOUT_HOURS, | |
1215 | KBD_TIMEOUT_DAYS, | |
1216 | }; | |
1217 | ||
1218 | enum kbd_mode_bit { | |
1219 | KBD_MODE_BIT_OFF = 0, | |
1220 | KBD_MODE_BIT_ON, | |
1221 | KBD_MODE_BIT_ALS, | |
1222 | KBD_MODE_BIT_TRIGGER_ALS, | |
1223 | KBD_MODE_BIT_TRIGGER, | |
1224 | KBD_MODE_BIT_TRIGGER_25, | |
1225 | KBD_MODE_BIT_TRIGGER_50, | |
1226 | KBD_MODE_BIT_TRIGGER_75, | |
1227 | KBD_MODE_BIT_TRIGGER_100, | |
1228 | }; | |
1229 | ||
1230 | #define kbd_is_als_mode_bit(bit) \ | |
1231 | ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS) | |
1232 | #define kbd_is_trigger_mode_bit(bit) \ | |
1233 | ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1234 | #define kbd_is_level_mode_bit(bit) \ | |
1235 | ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1236 | ||
1237 | struct kbd_info { | |
1238 | u16 modes; | |
1239 | u8 type; | |
1240 | u8 triggers; | |
1241 | u8 levels; | |
1242 | u8 seconds; | |
1243 | u8 minutes; | |
1244 | u8 hours; | |
1245 | u8 days; | |
1246 | }; | |
1247 | ||
1248 | struct kbd_state { | |
1249 | u8 mode_bit; | |
1250 | u8 triggers; | |
1251 | u8 timeout_value; | |
1252 | u8 timeout_unit; | |
1253 | u8 als_setting; | |
1254 | u8 als_value; | |
1255 | u8 level; | |
1256 | }; | |
1257 | ||
1258 | static const int kbd_tokens[] = { | |
1259 | KBD_LED_OFF_TOKEN, | |
1260 | KBD_LED_AUTO_25_TOKEN, | |
1261 | KBD_LED_AUTO_50_TOKEN, | |
1262 | KBD_LED_AUTO_75_TOKEN, | |
1263 | KBD_LED_AUTO_100_TOKEN, | |
1264 | KBD_LED_ON_TOKEN, | |
1265 | }; | |
1266 | ||
1267 | static u16 kbd_token_bits; | |
1268 | ||
1269 | static struct kbd_info kbd_info; | |
1270 | static bool kbd_als_supported; | |
1271 | static bool kbd_triggers_supported; | |
1272 | ||
1273 | static u8 kbd_mode_levels[16]; | |
1274 | static int kbd_mode_levels_count; | |
1275 | ||
1276 | static u8 kbd_previous_level; | |
1277 | static u8 kbd_previous_mode_bit; | |
1278 | ||
1279 | static bool kbd_led_present; | |
1280 | ||
1281 | /* | |
1282 | * NOTE: there are three ways to set the keyboard backlight level. | |
1283 | * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value). | |
1284 | * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels). | |
1285 | * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens) | |
1286 | * | |
1287 | * There are laptops which support only one of these methods. If we want to | |
1288 | * support as many machines as possible we need to implement all three methods. | |
1289 | * The first two methods use the kbd_state structure. The third uses SMBIOS | |
1290 | * tokens. If kbd_info.levels == 0, the machine does not support setting the | |
1291 | * keyboard backlight level via kbd_state.level. | |
1292 | */ | |
1293 | ||
1294 | static int kbd_get_info(struct kbd_info *info) | |
1295 | { | |
1296 | u8 units; | |
1297 | int ret; | |
1298 | ||
1299 | get_buffer(); | |
1300 | ||
1301 | buffer->input[0] = 0x0; | |
1302 | dell_send_request(buffer, 4, 11); | |
1303 | ret = buffer->output[0]; | |
1304 | ||
1305 | if (ret) { | |
1306 | ret = dell_smi_error(ret); | |
1307 | goto out; | |
1308 | } | |
1309 | ||
1310 | info->modes = buffer->output[1] & 0xFFFF; | |
1311 | info->type = (buffer->output[1] >> 24) & 0xFF; | |
1312 | info->triggers = buffer->output[2] & 0xFF; | |
1313 | units = (buffer->output[2] >> 8) & 0xFF; | |
1314 | info->levels = (buffer->output[2] >> 16) & 0xFF; | |
1315 | ||
1316 | if (units & BIT(0)) | |
1317 | info->seconds = (buffer->output[3] >> 0) & 0xFF; | |
1318 | if (units & BIT(1)) | |
1319 | info->minutes = (buffer->output[3] >> 8) & 0xFF; | |
1320 | if (units & BIT(2)) | |
1321 | info->hours = (buffer->output[3] >> 16) & 0xFF; | |
1322 | if (units & BIT(3)) | |
1323 | info->days = (buffer->output[3] >> 24) & 0xFF; | |
1324 | ||
1325 | out: | |
1326 | release_buffer(); | |
1327 | return ret; | |
1328 | } | |
1329 | ||
1330 | static unsigned int kbd_get_max_level(void) | |
1331 | { | |
1332 | if (kbd_info.levels != 0) | |
1333 | return kbd_info.levels; | |
1334 | if (kbd_mode_levels_count > 0) | |
1335 | return kbd_mode_levels_count - 1; | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static int kbd_get_level(struct kbd_state *state) | |
1340 | { | |
1341 | int i; | |
1342 | ||
1343 | if (kbd_info.levels != 0) | |
1344 | return state->level; | |
1345 | ||
1346 | if (kbd_mode_levels_count > 0) { | |
1347 | for (i = 0; i < kbd_mode_levels_count; ++i) | |
1348 | if (kbd_mode_levels[i] == state->mode_bit) | |
1349 | return i; | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | return -EINVAL; | |
1354 | } | |
1355 | ||
1356 | static int kbd_set_level(struct kbd_state *state, u8 level) | |
1357 | { | |
1358 | if (kbd_info.levels != 0) { | |
1359 | if (level != 0) | |
1360 | kbd_previous_level = level; | |
1361 | if (state->level == level) | |
1362 | return 0; | |
1363 | state->level = level; | |
1364 | if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF) | |
1365 | state->mode_bit = kbd_previous_mode_bit; | |
1366 | else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) { | |
1367 | kbd_previous_mode_bit = state->mode_bit; | |
1368 | state->mode_bit = KBD_MODE_BIT_OFF; | |
1369 | } | |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) { | |
1374 | if (level != 0) | |
1375 | kbd_previous_level = level; | |
1376 | state->mode_bit = kbd_mode_levels[level]; | |
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | return -EINVAL; | |
1381 | } | |
1382 | ||
1383 | static int kbd_get_state(struct kbd_state *state) | |
1384 | { | |
1385 | int ret; | |
1386 | ||
1387 | get_buffer(); | |
1388 | ||
1389 | buffer->input[0] = 0x1; | |
1390 | dell_send_request(buffer, 4, 11); | |
1391 | ret = buffer->output[0]; | |
1392 | ||
1393 | if (ret) { | |
1394 | ret = dell_smi_error(ret); | |
1395 | goto out; | |
1396 | } | |
1397 | ||
1398 | state->mode_bit = ffs(buffer->output[1] & 0xFFFF); | |
1399 | if (state->mode_bit != 0) | |
1400 | state->mode_bit--; | |
1401 | ||
1402 | state->triggers = (buffer->output[1] >> 16) & 0xFF; | |
1403 | state->timeout_value = (buffer->output[1] >> 24) & 0x3F; | |
1404 | state->timeout_unit = (buffer->output[1] >> 30) & 0x3; | |
1405 | state->als_setting = buffer->output[2] & 0xFF; | |
1406 | state->als_value = (buffer->output[2] >> 8) & 0xFF; | |
1407 | state->level = (buffer->output[2] >> 16) & 0xFF; | |
1408 | ||
1409 | out: | |
1410 | release_buffer(); | |
1411 | return ret; | |
1412 | } | |
1413 | ||
1414 | static int kbd_set_state(struct kbd_state *state) | |
1415 | { | |
1416 | int ret; | |
1417 | ||
1418 | get_buffer(); | |
1419 | buffer->input[0] = 0x2; | |
1420 | buffer->input[1] = BIT(state->mode_bit) & 0xFFFF; | |
1421 | buffer->input[1] |= (state->triggers & 0xFF) << 16; | |
1422 | buffer->input[1] |= (state->timeout_value & 0x3F) << 24; | |
1423 | buffer->input[1] |= (state->timeout_unit & 0x3) << 30; | |
1424 | buffer->input[2] = state->als_setting & 0xFF; | |
1425 | buffer->input[2] |= (state->level & 0xFF) << 16; | |
1426 | dell_send_request(buffer, 4, 11); | |
1427 | ret = buffer->output[0]; | |
1428 | release_buffer(); | |
1429 | ||
1430 | return dell_smi_error(ret); | |
1431 | } | |
1432 | ||
1433 | static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old) | |
1434 | { | |
1435 | int ret; | |
1436 | ||
1437 | ret = kbd_set_state(state); | |
1438 | if (ret == 0) | |
1439 | return 0; | |
1440 | ||
1441 | /* | |
1442 | * When setting the new state fails,try to restore the previous one. | |
1443 | * This is needed on some machines where BIOS sets a default state when | |
1444 | * setting a new state fails. This default state could be all off. | |
1445 | */ | |
1446 | ||
1447 | if (kbd_set_state(old)) | |
1448 | pr_err("Setting old previous keyboard state failed\n"); | |
1449 | ||
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | static int kbd_set_token_bit(u8 bit) | |
1454 | { | |
1455 | int id; | |
1456 | int ret; | |
1457 | ||
1458 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1459 | return -EINVAL; | |
1460 | ||
1461 | id = find_token_id(kbd_tokens[bit]); | |
1462 | if (id == -1) | |
1463 | return -EINVAL; | |
1464 | ||
1465 | get_buffer(); | |
1466 | buffer->input[0] = da_tokens[id].location; | |
1467 | buffer->input[1] = da_tokens[id].value; | |
1468 | dell_send_request(buffer, 1, 0); | |
1469 | ret = buffer->output[0]; | |
1470 | release_buffer(); | |
1471 | ||
1472 | return dell_smi_error(ret); | |
1473 | } | |
1474 | ||
1475 | static int kbd_get_token_bit(u8 bit) | |
1476 | { | |
1477 | int id; | |
1478 | int ret; | |
1479 | int val; | |
1480 | ||
1481 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1482 | return -EINVAL; | |
1483 | ||
1484 | id = find_token_id(kbd_tokens[bit]); | |
1485 | if (id == -1) | |
1486 | return -EINVAL; | |
1487 | ||
1488 | get_buffer(); | |
1489 | buffer->input[0] = da_tokens[id].location; | |
1490 | dell_send_request(buffer, 0, 0); | |
1491 | ret = buffer->output[0]; | |
1492 | val = buffer->output[1]; | |
1493 | release_buffer(); | |
1494 | ||
1495 | if (ret) | |
1496 | return dell_smi_error(ret); | |
1497 | ||
1498 | return (val == da_tokens[id].value); | |
1499 | } | |
1500 | ||
1501 | static int kbd_get_first_active_token_bit(void) | |
1502 | { | |
1503 | int i; | |
1504 | int ret; | |
1505 | ||
1506 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) { | |
1507 | ret = kbd_get_token_bit(i); | |
1508 | if (ret == 1) | |
1509 | return i; | |
1510 | } | |
1511 | ||
1512 | return ret; | |
1513 | } | |
1514 | ||
1515 | static int kbd_get_valid_token_counts(void) | |
1516 | { | |
1517 | return hweight16(kbd_token_bits); | |
1518 | } | |
1519 | ||
1520 | static inline int kbd_init_info(void) | |
1521 | { | |
1522 | struct kbd_state state; | |
1523 | int ret; | |
1524 | int i; | |
1525 | ||
1526 | ret = kbd_get_info(&kbd_info); | |
1527 | if (ret) | |
1528 | return ret; | |
1529 | ||
1530 | kbd_get_state(&state); | |
1531 | ||
1532 | /* NOTE: timeout value is stored in 6 bits so max value is 63 */ | |
1533 | if (kbd_info.seconds > 63) | |
1534 | kbd_info.seconds = 63; | |
1535 | if (kbd_info.minutes > 63) | |
1536 | kbd_info.minutes = 63; | |
1537 | if (kbd_info.hours > 63) | |
1538 | kbd_info.hours = 63; | |
1539 | if (kbd_info.days > 63) | |
1540 | kbd_info.days = 63; | |
1541 | ||
1542 | /* NOTE: On tested machines ON mode did not work and caused | |
1543 | * problems (turned backlight off) so do not use it | |
1544 | */ | |
1545 | kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON); | |
1546 | ||
1547 | kbd_previous_level = kbd_get_level(&state); | |
1548 | kbd_previous_mode_bit = state.mode_bit; | |
1549 | ||
1550 | if (kbd_previous_level == 0 && kbd_get_max_level() != 0) | |
1551 | kbd_previous_level = 1; | |
1552 | ||
1553 | if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) { | |
1554 | kbd_previous_mode_bit = | |
1555 | ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF)); | |
1556 | if (kbd_previous_mode_bit != 0) | |
1557 | kbd_previous_mode_bit--; | |
1558 | } | |
1559 | ||
1560 | if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) | | |
1561 | BIT(KBD_MODE_BIT_TRIGGER_ALS))) | |
1562 | kbd_als_supported = true; | |
1563 | ||
1564 | if (kbd_info.modes & ( | |
1565 | BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) | | |
1566 | BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) | | |
1567 | BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100) | |
1568 | )) | |
1569 | kbd_triggers_supported = true; | |
1570 | ||
1571 | /* kbd_mode_levels[0] is reserved, see below */ | |
1572 | for (i = 0; i < 16; ++i) | |
1573 | if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes)) | |
1574 | kbd_mode_levels[1 + kbd_mode_levels_count++] = i; | |
1575 | ||
1576 | /* | |
1577 | * Find the first supported mode and assign to kbd_mode_levels[0]. | |
1578 | * This should be 0 (off), but we cannot depend on the BIOS to | |
1579 | * support 0. | |
1580 | */ | |
1581 | if (kbd_mode_levels_count > 0) { | |
1582 | for (i = 0; i < 16; ++i) { | |
1583 | if (BIT(i) & kbd_info.modes) { | |
1584 | kbd_mode_levels[0] = i; | |
1585 | break; | |
1586 | } | |
1587 | } | |
1588 | kbd_mode_levels_count++; | |
1589 | } | |
1590 | ||
1591 | return 0; | |
1592 | ||
1593 | } | |
1594 | ||
1595 | static inline void kbd_init_tokens(void) | |
1596 | { | |
1597 | int i; | |
1598 | ||
1599 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) | |
1600 | if (find_token_id(kbd_tokens[i]) != -1) | |
1601 | kbd_token_bits |= BIT(i); | |
1602 | } | |
1603 | ||
1604 | static void kbd_init(void) | |
1605 | { | |
1606 | int ret; | |
1607 | ||
1608 | ret = kbd_init_info(); | |
1609 | kbd_init_tokens(); | |
1610 | ||
1611 | if (kbd_token_bits != 0 || ret == 0) | |
1612 | kbd_led_present = true; | |
1613 | } | |
1614 | ||
1615 | static ssize_t kbd_led_timeout_store(struct device *dev, | |
1616 | struct device_attribute *attr, | |
1617 | const char *buf, size_t count) | |
1618 | { | |
1619 | struct kbd_state new_state; | |
1620 | struct kbd_state state; | |
1621 | bool convert; | |
1622 | int value; | |
1623 | int ret; | |
1624 | char ch; | |
1625 | u8 unit; | |
1626 | int i; | |
1627 | ||
1628 | ret = sscanf(buf, "%d %c", &value, &ch); | |
1629 | if (ret < 1) | |
1630 | return -EINVAL; | |
1631 | else if (ret == 1) | |
1632 | ch = 's'; | |
1633 | ||
1634 | if (value < 0) | |
1635 | return -EINVAL; | |
1636 | ||
1637 | convert = false; | |
1638 | ||
1639 | switch (ch) { | |
1640 | case 's': | |
1641 | if (value > kbd_info.seconds) | |
1642 | convert = true; | |
1643 | unit = KBD_TIMEOUT_SECONDS; | |
1644 | break; | |
1645 | case 'm': | |
1646 | if (value > kbd_info.minutes) | |
1647 | convert = true; | |
1648 | unit = KBD_TIMEOUT_MINUTES; | |
1649 | break; | |
1650 | case 'h': | |
1651 | if (value > kbd_info.hours) | |
1652 | convert = true; | |
1653 | unit = KBD_TIMEOUT_HOURS; | |
1654 | break; | |
1655 | case 'd': | |
1656 | if (value > kbd_info.days) | |
1657 | convert = true; | |
1658 | unit = KBD_TIMEOUT_DAYS; | |
1659 | break; | |
1660 | default: | |
1661 | return -EINVAL; | |
1662 | } | |
1663 | ||
1664 | if (quirks && quirks->needs_kbd_timeouts) | |
1665 | convert = true; | |
1666 | ||
1667 | if (convert) { | |
1668 | /* Convert value from current units to seconds */ | |
1669 | switch (unit) { | |
1670 | case KBD_TIMEOUT_DAYS: | |
1671 | value *= 24; | |
1672 | case KBD_TIMEOUT_HOURS: | |
1673 | value *= 60; | |
1674 | case KBD_TIMEOUT_MINUTES: | |
1675 | value *= 60; | |
1676 | unit = KBD_TIMEOUT_SECONDS; | |
1677 | } | |
1678 | ||
1679 | if (quirks && quirks->needs_kbd_timeouts) { | |
1680 | for (i = 0; quirks->kbd_timeouts[i] != -1; i++) { | |
1681 | if (value <= quirks->kbd_timeouts[i]) { | |
1682 | value = quirks->kbd_timeouts[i]; | |
1683 | break; | |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | if (value <= kbd_info.seconds && kbd_info.seconds) { | |
1689 | unit = KBD_TIMEOUT_SECONDS; | |
1690 | } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) { | |
1691 | value /= 60; | |
1692 | unit = KBD_TIMEOUT_MINUTES; | |
1693 | } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) { | |
1694 | value /= (60 * 60); | |
1695 | unit = KBD_TIMEOUT_HOURS; | |
1696 | } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) { | |
1697 | value /= (60 * 60 * 24); | |
1698 | unit = KBD_TIMEOUT_DAYS; | |
1699 | } else { | |
1700 | return -EINVAL; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | ret = kbd_get_state(&state); | |
1705 | if (ret) | |
1706 | return ret; | |
1707 | ||
1708 | new_state = state; | |
1709 | new_state.timeout_value = value; | |
1710 | new_state.timeout_unit = unit; | |
1711 | ||
1712 | ret = kbd_set_state_safe(&new_state, &state); | |
1713 | if (ret) | |
1714 | return ret; | |
1715 | ||
1716 | return count; | |
1717 | } | |
1718 | ||
1719 | static ssize_t kbd_led_timeout_show(struct device *dev, | |
1720 | struct device_attribute *attr, char *buf) | |
1721 | { | |
1722 | struct kbd_state state; | |
1723 | int ret; | |
1724 | int len; | |
1725 | ||
1726 | ret = kbd_get_state(&state); | |
1727 | if (ret) | |
1728 | return ret; | |
1729 | ||
1730 | len = sprintf(buf, "%d", state.timeout_value); | |
1731 | ||
1732 | switch (state.timeout_unit) { | |
1733 | case KBD_TIMEOUT_SECONDS: | |
1734 | return len + sprintf(buf+len, "s\n"); | |
1735 | case KBD_TIMEOUT_MINUTES: | |
1736 | return len + sprintf(buf+len, "m\n"); | |
1737 | case KBD_TIMEOUT_HOURS: | |
1738 | return len + sprintf(buf+len, "h\n"); | |
1739 | case KBD_TIMEOUT_DAYS: | |
1740 | return len + sprintf(buf+len, "d\n"); | |
1741 | default: | |
1742 | return -EINVAL; | |
1743 | } | |
1744 | ||
1745 | return len; | |
1746 | } | |
1747 | ||
1748 | static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR, | |
1749 | kbd_led_timeout_show, kbd_led_timeout_store); | |
1750 | ||
1751 | static const char * const kbd_led_triggers[] = { | |
1752 | "keyboard", | |
1753 | "touchpad", | |
1754 | /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */ | |
1755 | "mouse", | |
1756 | }; | |
1757 | ||
1758 | static ssize_t kbd_led_triggers_store(struct device *dev, | |
1759 | struct device_attribute *attr, | |
1760 | const char *buf, size_t count) | |
1761 | { | |
1762 | struct kbd_state new_state; | |
1763 | struct kbd_state state; | |
1764 | bool triggers_enabled = false; | |
1765 | int trigger_bit = -1; | |
1766 | char trigger[21]; | |
1767 | int i, ret; | |
1768 | ||
1769 | ret = sscanf(buf, "%20s", trigger); | |
1770 | if (ret != 1) | |
1771 | return -EINVAL; | |
1772 | ||
1773 | if (trigger[0] != '+' && trigger[0] != '-') | |
1774 | return -EINVAL; | |
1775 | ||
1776 | ret = kbd_get_state(&state); | |
1777 | if (ret) | |
1778 | return ret; | |
1779 | ||
1780 | if (kbd_triggers_supported) | |
1781 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1782 | ||
1783 | if (kbd_triggers_supported) { | |
1784 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1785 | if (!(kbd_info.triggers & BIT(i))) | |
1786 | continue; | |
1787 | if (!kbd_led_triggers[i]) | |
1788 | continue; | |
1789 | if (strcmp(trigger+1, kbd_led_triggers[i]) != 0) | |
1790 | continue; | |
1791 | if (trigger[0] == '+' && | |
1792 | triggers_enabled && (state.triggers & BIT(i))) | |
1793 | return count; | |
1794 | if (trigger[0] == '-' && | |
1795 | (!triggers_enabled || !(state.triggers & BIT(i)))) | |
1796 | return count; | |
1797 | trigger_bit = i; | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | if (trigger_bit != -1) { | |
1803 | new_state = state; | |
1804 | if (trigger[0] == '+') | |
1805 | new_state.triggers |= BIT(trigger_bit); | |
1806 | else { | |
1807 | new_state.triggers &= ~BIT(trigger_bit); | |
1808 | /* NOTE: trackstick bit (2) must be disabled when | |
1809 | * disabling touchpad bit (1), otherwise touchpad | |
1810 | * bit (1) will not be disabled */ | |
1811 | if (trigger_bit == 1) | |
1812 | new_state.triggers &= ~BIT(2); | |
1813 | } | |
1814 | if ((kbd_info.triggers & new_state.triggers) != | |
1815 | new_state.triggers) | |
1816 | return -EINVAL; | |
1817 | if (new_state.triggers && !triggers_enabled) { | |
1818 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1819 | kbd_set_level(&new_state, kbd_previous_level); | |
1820 | } else if (new_state.triggers == 0) { | |
1821 | kbd_set_level(&new_state, 0); | |
1822 | } | |
1823 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1824 | return -EINVAL; | |
1825 | ret = kbd_set_state_safe(&new_state, &state); | |
1826 | if (ret) | |
1827 | return ret; | |
1828 | if (new_state.mode_bit != KBD_MODE_BIT_OFF) | |
1829 | kbd_previous_mode_bit = new_state.mode_bit; | |
1830 | return count; | |
1831 | } | |
1832 | ||
1833 | return -EINVAL; | |
1834 | } | |
1835 | ||
1836 | static ssize_t kbd_led_triggers_show(struct device *dev, | |
1837 | struct device_attribute *attr, char *buf) | |
1838 | { | |
1839 | struct kbd_state state; | |
1840 | bool triggers_enabled; | |
1841 | int level, i, ret; | |
1842 | int len = 0; | |
1843 | ||
1844 | ret = kbd_get_state(&state); | |
1845 | if (ret) | |
1846 | return ret; | |
1847 | ||
1848 | len = 0; | |
1849 | ||
1850 | if (kbd_triggers_supported) { | |
1851 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1852 | level = kbd_get_level(&state); | |
1853 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1854 | if (!(kbd_info.triggers & BIT(i))) | |
1855 | continue; | |
1856 | if (!kbd_led_triggers[i]) | |
1857 | continue; | |
1858 | if ((triggers_enabled || level <= 0) && | |
1859 | (state.triggers & BIT(i))) | |
1860 | buf[len++] = '+'; | |
1861 | else | |
1862 | buf[len++] = '-'; | |
1863 | len += sprintf(buf+len, "%s ", kbd_led_triggers[i]); | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | if (len) | |
1868 | buf[len - 1] = '\n'; | |
1869 | ||
1870 | return len; | |
1871 | } | |
1872 | ||
1873 | static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR, | |
1874 | kbd_led_triggers_show, kbd_led_triggers_store); | |
1875 | ||
1876 | static ssize_t kbd_led_als_enabled_store(struct device *dev, | |
1877 | struct device_attribute *attr, | |
1878 | const char *buf, size_t count) | |
1879 | { | |
1880 | struct kbd_state new_state; | |
1881 | struct kbd_state state; | |
1882 | bool triggers_enabled = false; | |
1883 | int enable; | |
1884 | int ret; | |
1885 | ||
1886 | ret = kstrtoint(buf, 0, &enable); | |
1887 | if (ret) | |
1888 | return ret; | |
1889 | ||
1890 | ret = kbd_get_state(&state); | |
1891 | if (ret) | |
1892 | return ret; | |
1893 | ||
1894 | if (enable == kbd_is_als_mode_bit(state.mode_bit)) | |
1895 | return count; | |
1896 | ||
1897 | new_state = state; | |
1898 | ||
1899 | if (kbd_triggers_supported) | |
1900 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1901 | ||
1902 | if (enable) { | |
1903 | if (triggers_enabled) | |
1904 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS; | |
1905 | else | |
1906 | new_state.mode_bit = KBD_MODE_BIT_ALS; | |
1907 | } else { | |
1908 | if (triggers_enabled) { | |
1909 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1910 | kbd_set_level(&new_state, kbd_previous_level); | |
1911 | } else { | |
1912 | new_state.mode_bit = KBD_MODE_BIT_ON; | |
1913 | } | |
1914 | } | |
1915 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) | |
1916 | return -EINVAL; | |
1917 | ||
1918 | ret = kbd_set_state_safe(&new_state, &state); | |
1919 | if (ret) | |
1920 | return ret; | |
1921 | kbd_previous_mode_bit = new_state.mode_bit; | |
1922 | ||
1923 | return count; | |
1924 | } | |
1925 | ||
1926 | static ssize_t kbd_led_als_enabled_show(struct device *dev, | |
1927 | struct device_attribute *attr, | |
1928 | char *buf) | |
1929 | { | |
1930 | struct kbd_state state; | |
1931 | bool enabled = false; | |
1932 | int ret; | |
1933 | ||
1934 | ret = kbd_get_state(&state); | |
1935 | if (ret) | |
1936 | return ret; | |
1937 | enabled = kbd_is_als_mode_bit(state.mode_bit); | |
1938 | ||
1939 | return sprintf(buf, "%d\n", enabled ? 1 : 0); | |
1940 | } | |
1941 | ||
1942 | static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR, | |
1943 | kbd_led_als_enabled_show, kbd_led_als_enabled_store); | |
1944 | ||
1945 | static ssize_t kbd_led_als_setting_store(struct device *dev, | |
1946 | struct device_attribute *attr, | |
1947 | const char *buf, size_t count) | |
1948 | { | |
1949 | struct kbd_state state; | |
1950 | struct kbd_state new_state; | |
1951 | u8 setting; | |
1952 | int ret; | |
1953 | ||
1954 | ret = kstrtou8(buf, 10, &setting); | |
1955 | if (ret) | |
1956 | return ret; | |
1957 | ||
1958 | ret = kbd_get_state(&state); | |
1959 | if (ret) | |
1960 | return ret; | |
1961 | ||
1962 | new_state = state; | |
1963 | new_state.als_setting = setting; | |
1964 | ||
1965 | ret = kbd_set_state_safe(&new_state, &state); | |
1966 | if (ret) | |
1967 | return ret; | |
1968 | ||
1969 | return count; | |
1970 | } | |
1971 | ||
1972 | static ssize_t kbd_led_als_setting_show(struct device *dev, | |
1973 | struct device_attribute *attr, | |
1974 | char *buf) | |
1975 | { | |
1976 | struct kbd_state state; | |
1977 | int ret; | |
1978 | ||
1979 | ret = kbd_get_state(&state); | |
1980 | if (ret) | |
1981 | return ret; | |
1982 | ||
1983 | return sprintf(buf, "%d\n", state.als_setting); | |
1984 | } | |
1985 | ||
1986 | static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR, | |
1987 | kbd_led_als_setting_show, kbd_led_als_setting_store); | |
1988 | ||
1989 | static struct attribute *kbd_led_attrs[] = { | |
1990 | &dev_attr_stop_timeout.attr, | |
1991 | &dev_attr_start_triggers.attr, | |
1992 | NULL, | |
1993 | }; | |
1994 | ||
1995 | static const struct attribute_group kbd_led_group = { | |
1996 | .attrs = kbd_led_attrs, | |
1997 | }; | |
1998 | ||
1999 | static struct attribute *kbd_led_als_attrs[] = { | |
2000 | &dev_attr_als_enabled.attr, | |
2001 | &dev_attr_als_setting.attr, | |
2002 | NULL, | |
2003 | }; | |
2004 | ||
2005 | static const struct attribute_group kbd_led_als_group = { | |
2006 | .attrs = kbd_led_als_attrs, | |
2007 | }; | |
2008 | ||
2009 | static const struct attribute_group *kbd_led_groups[] = { | |
2010 | &kbd_led_group, | |
2011 | &kbd_led_als_group, | |
2012 | NULL, | |
2013 | }; | |
2014 | ||
2015 | static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev) | |
2016 | { | |
2017 | int ret; | |
2018 | u16 num; | |
2019 | struct kbd_state state; | |
2020 | ||
2021 | if (kbd_get_max_level()) { | |
2022 | ret = kbd_get_state(&state); | |
2023 | if (ret) | |
2024 | return 0; | |
2025 | ret = kbd_get_level(&state); | |
2026 | if (ret < 0) | |
2027 | return 0; | |
2028 | return ret; | |
2029 | } | |
2030 | ||
2031 | if (kbd_get_valid_token_counts()) { | |
2032 | ret = kbd_get_first_active_token_bit(); | |
2033 | if (ret < 0) | |
2034 | return 0; | |
2035 | for (num = kbd_token_bits; num != 0 && ret > 0; --ret) | |
2036 | num &= num - 1; /* clear the first bit set */ | |
2037 | if (num == 0) | |
2038 | return 0; | |
2039 | return ffs(num) - 1; | |
2040 | } | |
2041 | ||
2042 | pr_warn("Keyboard brightness level control not supported\n"); | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | static void kbd_led_level_set(struct led_classdev *led_cdev, | |
2047 | enum led_brightness value) | |
2048 | { | |
2049 | struct kbd_state state; | |
2050 | struct kbd_state new_state; | |
2051 | u16 num; | |
2052 | ||
2053 | if (kbd_get_max_level()) { | |
2054 | if (kbd_get_state(&state)) | |
2055 | return; | |
2056 | new_state = state; | |
2057 | if (kbd_set_level(&new_state, value)) | |
2058 | return; | |
2059 | kbd_set_state_safe(&new_state, &state); | |
2060 | return; | |
2061 | } | |
2062 | ||
2063 | if (kbd_get_valid_token_counts()) { | |
2064 | for (num = kbd_token_bits; num != 0 && value > 0; --value) | |
2065 | num &= num - 1; /* clear the first bit set */ | |
2066 | if (num == 0) | |
2067 | return; | |
2068 | kbd_set_token_bit(ffs(num) - 1); | |
2069 | return; | |
2070 | } | |
2071 | ||
2072 | pr_warn("Keyboard brightness level control not supported\n"); | |
2073 | } | |
2074 | ||
2075 | static struct led_classdev kbd_led = { | |
2076 | .name = "dell::kbd_backlight", | |
2077 | .brightness_set = kbd_led_level_set, | |
2078 | .brightness_get = kbd_led_level_get, | |
2079 | .groups = kbd_led_groups, | |
2080 | }; | |
2081 | ||
2082 | static int __init kbd_led_init(struct device *dev) | |
2083 | { | |
2084 | kbd_init(); | |
2085 | if (!kbd_led_present) | |
2086 | return -ENODEV; | |
2087 | if (!kbd_als_supported) | |
2088 | kbd_led_groups[1] = NULL; | |
2089 | kbd_led.max_brightness = kbd_get_max_level(); | |
2090 | if (!kbd_led.max_brightness) { | |
2091 | kbd_led.max_brightness = kbd_get_valid_token_counts(); | |
2092 | if (kbd_led.max_brightness) | |
2093 | kbd_led.max_brightness--; | |
2094 | } | |
2095 | return led_classdev_register(dev, &kbd_led); | |
2096 | } | |
2097 | ||
2098 | static void brightness_set_exit(struct led_classdev *led_cdev, | |
2099 | enum led_brightness value) | |
2100 | { | |
2101 | /* Don't change backlight level on exit */ | |
2102 | }; | |
2103 | ||
2104 | static void kbd_led_exit(void) | |
2105 | { | |
2106 | if (!kbd_led_present) | |
2107 | return; | |
2108 | kbd_led.brightness_set = brightness_set_exit; | |
2109 | led_classdev_unregister(&kbd_led); | |
2110 | } | |
2111 | ||
ad8f07cc MG |
2112 | static int __init dell_init(void) |
2113 | { | |
ad8f07cc | 2114 | int max_intensity = 0; |
715d0cdd | 2115 | int token; |
ad8f07cc MG |
2116 | int ret; |
2117 | ||
2118 | if (!dmi_check_system(dell_device_table)) | |
2119 | return -ENODEV; | |
2120 | ||
2d8b90be AK |
2121 | quirks = NULL; |
2122 | /* find if this machine support other functions */ | |
2123 | dmi_check_system(dell_quirks); | |
2124 | ||
e7a19c56 | 2125 | dmi_walk(find_tokens, NULL); |
ad8f07cc MG |
2126 | |
2127 | if (!da_tokens) { | |
eb889524 | 2128 | pr_info("Unable to find dmi tokens\n"); |
ad8f07cc MG |
2129 | return -ENODEV; |
2130 | } | |
2131 | ||
ada3248a AJ |
2132 | ret = platform_driver_register(&platform_driver); |
2133 | if (ret) | |
2134 | goto fail_platform_driver; | |
2135 | platform_device = platform_device_alloc("dell-laptop", -1); | |
2136 | if (!platform_device) { | |
2137 | ret = -ENOMEM; | |
2138 | goto fail_platform_device1; | |
2139 | } | |
2140 | ret = platform_device_add(platform_device); | |
2141 | if (ret) | |
2142 | goto fail_platform_device2; | |
2143 | ||
116ee77b SH |
2144 | /* |
2145 | * Allocate buffer below 4GB for SMI data--only 32-bit physical addr | |
2146 | * is passed to SMI handler. | |
2147 | */ | |
b8830a4e PR |
2148 | buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32); |
2149 | if (!buffer) { | |
9f208202 | 2150 | ret = -ENOMEM; |
116ee77b | 2151 | goto fail_buffer; |
9f208202 | 2152 | } |
116ee77b | 2153 | |
4cc8a574 HG |
2154 | ret = dell_setup_rfkill(); |
2155 | ||
2156 | if (ret) { | |
2157 | pr_warn("Unable to setup rfkill\n"); | |
2158 | goto fail_rfkill; | |
2159 | } | |
2160 | ||
2d8b90be AK |
2161 | if (quirks && quirks->touchpad_led) |
2162 | touchpad_led_init(&platform_device->dev); | |
2163 | ||
6cff8d60 GM |
2164 | kbd_led_init(&platform_device->dev); |
2165 | ||
037accfa | 2166 | dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL); |
4cc8a574 HG |
2167 | if (dell_laptop_dir != NULL) |
2168 | debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL, | |
2169 | &dell_debugfs_fops); | |
037accfa | 2170 | |
ee4cfe28 | 2171 | if (acpi_video_get_backlight_type() != acpi_backlight_vendor) |
ad8f07cc | 2172 | return 0; |
ad8f07cc | 2173 | |
715d0cdd PR |
2174 | token = find_token_location(BRIGHTNESS_TOKEN); |
2175 | if (token != -1) { | |
2176 | get_buffer(); | |
2177 | buffer->input[0] = token; | |
116ee77b | 2178 | dell_send_request(buffer, 0, 2); |
715d0cdd PR |
2179 | if (buffer->output[0] == 0) |
2180 | max_intensity = buffer->output[3]; | |
2181 | release_buffer(); | |
ad8f07cc MG |
2182 | } |
2183 | ||
2184 | if (max_intensity) { | |
a19a6ee6 MG |
2185 | struct backlight_properties props; |
2186 | memset(&props, 0, sizeof(struct backlight_properties)); | |
bb7ca747 | 2187 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 MG |
2188 | props.max_brightness = max_intensity; |
2189 | dell_backlight_device = backlight_device_register("dell_backlight", | |
2190 | &platform_device->dev, | |
2191 | NULL, | |
2192 | &dell_ops, | |
2193 | &props); | |
ad8f07cc MG |
2194 | |
2195 | if (IS_ERR(dell_backlight_device)) { | |
2196 | ret = PTR_ERR(dell_backlight_device); | |
2197 | dell_backlight_device = NULL; | |
71e9dc73 | 2198 | goto fail_backlight; |
ad8f07cc MG |
2199 | } |
2200 | ||
ad8f07cc MG |
2201 | dell_backlight_device->props.brightness = |
2202 | dell_get_intensity(dell_backlight_device); | |
2203 | backlight_update_status(dell_backlight_device); | |
2204 | } | |
2205 | ||
2206 | return 0; | |
71e9dc73 AJ |
2207 | |
2208 | fail_backlight: | |
4cc8a574 HG |
2209 | dell_cleanup_rfkill(); |
2210 | fail_rfkill: | |
b8830a4e | 2211 | free_page((unsigned long)buffer); |
116ee77b | 2212 | fail_buffer: |
ada3248a AJ |
2213 | platform_device_del(platform_device); |
2214 | fail_platform_device2: | |
2215 | platform_device_put(platform_device); | |
2216 | fail_platform_device1: | |
2217 | platform_driver_unregister(&platform_driver); | |
2218 | fail_platform_driver: | |
ad8f07cc MG |
2219 | kfree(da_tokens); |
2220 | return ret; | |
2221 | } | |
2222 | ||
2223 | static void __exit dell_exit(void) | |
2224 | { | |
037accfa | 2225 | debugfs_remove_recursive(dell_laptop_dir); |
2d8b90be AK |
2226 | if (quirks && quirks->touchpad_led) |
2227 | touchpad_led_exit(); | |
6cff8d60 | 2228 | kbd_led_exit(); |
ad8f07cc | 2229 | backlight_device_unregister(dell_backlight_device); |
4cc8a574 | 2230 | dell_cleanup_rfkill(); |
facd61d7 | 2231 | if (platform_device) { |
92e00e47 | 2232 | platform_device_unregister(platform_device); |
facd61d7 MG |
2233 | platform_driver_unregister(&platform_driver); |
2234 | } | |
e551260b | 2235 | kfree(da_tokens); |
116ee77b | 2236 | free_page((unsigned long)buffer); |
ad8f07cc MG |
2237 | } |
2238 | ||
f8358578 PR |
2239 | /* dell-rbtn.c driver export functions which will not work correctly (and could |
2240 | * cause kernel crash) if they are called before dell-rbtn.c init code. This is | |
2241 | * not problem when dell-rbtn.c is compiled as external module. When both files | |
2242 | * (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we | |
2243 | * need to ensure that dell_init() will be called after initializing dell-rbtn. | |
2244 | * This can be achieved by late_initcall() instead module_init(). | |
2245 | */ | |
2246 | late_initcall(dell_init); | |
ad8f07cc MG |
2247 | module_exit(dell_exit); |
2248 | ||
2249 | MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); | |
6cff8d60 GM |
2250 | MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>"); |
2251 | MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); | |
ad8f07cc MG |
2252 | MODULE_DESCRIPTION("Dell laptop driver"); |
2253 | MODULE_LICENSE("GPL"); |