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