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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
ad8f07cc MG |
2 | /* |
3 | * Driver for Dell laptop extras | |
4 | * | |
5 | * Copyright (c) Red Hat <mjg@redhat.com> | |
6cff8d60 | 6 | * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com> |
149ed3d4 | 7 | * Copyright (c) 2014 Pali Rohár <pali@kernel.org> |
ad8f07cc | 8 | * |
6cff8d60 GM |
9 | * Based on documentation in the libsmbios package: |
10 | * Copyright (C) 2005-2014 Dell Inc. | |
ad8f07cc MG |
11 | */ |
12 | ||
eb889524 JP |
13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
14 | ||
ad8f07cc MG |
15 | #include <linux/module.h> |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/backlight.h> | |
20 | #include <linux/err.h> | |
21 | #include <linux/dmi.h> | |
22 | #include <linux/io.h> | |
4cc8a574 | 23 | #include <linux/rfkill.h> |
ad8f07cc MG |
24 | #include <linux/power_supply.h> |
25 | #include <linux/acpi.h> | |
116ee77b | 26 | #include <linux/mm.h> |
814cb8ad | 27 | #include <linux/i8042.h> |
037accfa KYL |
28 | #include <linux/debugfs.h> |
29 | #include <linux/seq_file.h> | |
ee4cfe28 | 30 | #include <acpi/video.h> |
f8358578 | 31 | #include "dell-rbtn.h" |
2f9f26bd | 32 | #include "dell-smbios.h" |
ad8f07cc | 33 | |
2d8b90be | 34 | struct quirk_entry { |
1e478ac1 | 35 | bool touchpad_led; |
10b65e29 | 36 | bool kbd_led_not_present; |
1e478ac1 | 37 | bool kbd_led_levels_off_1; |
e6a7379f | 38 | bool kbd_missing_ac_tag; |
6cff8d60 | 39 | |
1e478ac1 | 40 | bool needs_kbd_timeouts; |
6cff8d60 GM |
41 | /* |
42 | * Ordered list of timeouts expressed in seconds. | |
43 | * The list must end with -1 | |
44 | */ | |
45 | int kbd_timeouts[]; | |
2d8b90be AK |
46 | }; |
47 | ||
48 | static struct quirk_entry *quirks; | |
49 | ||
50 | static struct quirk_entry quirk_dell_vostro_v130 = { | |
1e478ac1 | 51 | .touchpad_led = true, |
2d8b90be AK |
52 | }; |
53 | ||
681480cc | 54 | static int __init dmi_matched(const struct dmi_system_id *dmi) |
2d8b90be AK |
55 | { |
56 | quirks = dmi->driver_data; | |
57 | return 1; | |
58 | } | |
59 | ||
6cff8d60 GM |
60 | /* |
61 | * These values come from Windows utility provided by Dell. If any other value | |
62 | * is used then BIOS silently set timeout to 0 without any error message. | |
63 | */ | |
64 | static struct quirk_entry quirk_dell_xps13_9333 = { | |
1e478ac1 | 65 | .needs_kbd_timeouts = true, |
6cff8d60 GM |
66 | .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 }, |
67 | }; | |
68 | ||
e6a7379f TK |
69 | static struct quirk_entry quirk_dell_xps13_9370 = { |
70 | .kbd_missing_ac_tag = true, | |
71 | }; | |
72 | ||
e20a8e77 | 73 | static struct quirk_entry quirk_dell_latitude_e6410 = { |
1e478ac1 | 74 | .kbd_led_levels_off_1 = true, |
e20a8e77 PR |
75 | }; |
76 | ||
10b65e29 PTG |
77 | static struct quirk_entry quirk_dell_inspiron_1012 = { |
78 | .kbd_led_not_present = true, | |
79 | }; | |
80 | ||
ada3248a AJ |
81 | static struct platform_driver platform_driver = { |
82 | .driver = { | |
83 | .name = "dell-laptop", | |
ada3248a AJ |
84 | } |
85 | }; | |
86 | ||
87 | static struct platform_device *platform_device; | |
ad8f07cc | 88 | static struct backlight_device *dell_backlight_device; |
4cc8a574 HG |
89 | static struct rfkill *wifi_rfkill; |
90 | static struct rfkill *bluetooth_rfkill; | |
91 | static struct rfkill *wwan_rfkill; | |
8e0e668d HG |
92 | static bool force_rfkill; |
93 | ||
94 | module_param(force_rfkill, bool, 0444); | |
95 | MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models"); | |
ad8f07cc | 96 | |
145047de | 97 | static const struct dmi_system_id dell_device_table[] __initconst = { |
ad8f07cc MG |
98 | { |
99 | .ident = "Dell laptop", | |
100 | .matches = { | |
101 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
102 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
103 | }, | |
104 | }, | |
410d44c7 RK |
105 | { |
106 | .matches = { | |
107 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
108 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/ | |
109 | }, | |
110 | }, | |
8d2c4538 AH |
111 | { |
112 | .matches = { | |
113 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
114 | DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /*Notebook*/ | |
115 | }, | |
116 | }, | |
fe486138 AA |
117 | { |
118 | .matches = { | |
119 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
120 | DMI_MATCH(DMI_CHASSIS_TYPE, "30"), /*Tablet*/ | |
121 | }, | |
122 | }, | |
123 | { | |
124 | .matches = { | |
125 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
126 | DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /*Convertible*/ | |
127 | }, | |
128 | }, | |
129 | { | |
130 | .matches = { | |
131 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
132 | DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/ | |
133 | }, | |
134 | }, | |
cb6a7937 EA |
135 | { |
136 | .ident = "Dell Computer Corporation", | |
137 | .matches = { | |
138 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
139 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
140 | }, | |
141 | }, | |
ad8f07cc MG |
142 | { } |
143 | }; | |
35ae64fe | 144 | MODULE_DEVICE_TABLE(dmi, dell_device_table); |
ad8f07cc | 145 | |
681480cc | 146 | static const struct dmi_system_id dell_quirks[] __initconst = { |
2d8b90be AK |
147 | { |
148 | .callback = dmi_matched, | |
149 | .ident = "Dell Vostro V130", | |
150 | .matches = { | |
151 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
152 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"), | |
153 | }, | |
154 | .driver_data = &quirk_dell_vostro_v130, | |
155 | }, | |
156 | { | |
157 | .callback = dmi_matched, | |
158 | .ident = "Dell Vostro V131", | |
159 | .matches = { | |
160 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
161 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), | |
162 | }, | |
163 | .driver_data = &quirk_dell_vostro_v130, | |
164 | }, | |
57b31b2f AWC |
165 | { |
166 | .callback = dmi_matched, | |
167 | .ident = "Dell Vostro 3350", | |
168 | .matches = { | |
169 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
170 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"), | |
171 | }, | |
172 | .driver_data = &quirk_dell_vostro_v130, | |
173 | }, | |
2a748853 AK |
174 | { |
175 | .callback = dmi_matched, | |
176 | .ident = "Dell Vostro 3555", | |
177 | .matches = { | |
178 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
179 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"), | |
180 | }, | |
181 | .driver_data = &quirk_dell_vostro_v130, | |
182 | }, | |
183 | { | |
184 | .callback = dmi_matched, | |
185 | .ident = "Dell Inspiron N311z", | |
186 | .matches = { | |
187 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
188 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"), | |
189 | }, | |
190 | .driver_data = &quirk_dell_vostro_v130, | |
191 | }, | |
192 | { | |
193 | .callback = dmi_matched, | |
194 | .ident = "Dell Inspiron M5110", | |
195 | .matches = { | |
196 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
197 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"), | |
198 | }, | |
199 | .driver_data = &quirk_dell_vostro_v130, | |
200 | }, | |
7f839228 AK |
201 | { |
202 | .callback = dmi_matched, | |
203 | .ident = "Dell Vostro 3360", | |
204 | .matches = { | |
205 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
206 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"), | |
207 | }, | |
208 | .driver_data = &quirk_dell_vostro_v130, | |
209 | }, | |
210 | { | |
211 | .callback = dmi_matched, | |
212 | .ident = "Dell Vostro 3460", | |
213 | .matches = { | |
214 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
215 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"), | |
216 | }, | |
217 | .driver_data = &quirk_dell_vostro_v130, | |
218 | }, | |
219 | { | |
220 | .callback = dmi_matched, | |
221 | .ident = "Dell Vostro 3560", | |
222 | .matches = { | |
223 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
224 | DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"), | |
225 | }, | |
226 | .driver_data = &quirk_dell_vostro_v130, | |
227 | }, | |
d0e0a477 AK |
228 | { |
229 | .callback = dmi_matched, | |
230 | .ident = "Dell Vostro 3450", | |
231 | .matches = { | |
232 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
233 | DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"), | |
234 | }, | |
235 | .driver_data = &quirk_dell_vostro_v130, | |
236 | }, | |
5f1e88f4 AK |
237 | { |
238 | .callback = dmi_matched, | |
239 | .ident = "Dell Inspiron 5420", | |
240 | .matches = { | |
241 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 242 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"), |
5f1e88f4 AK |
243 | }, |
244 | .driver_data = &quirk_dell_vostro_v130, | |
245 | }, | |
246 | { | |
247 | .callback = dmi_matched, | |
248 | .ident = "Dell Inspiron 5520", | |
249 | .matches = { | |
250 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 251 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"), |
5f1e88f4 AK |
252 | }, |
253 | .driver_data = &quirk_dell_vostro_v130, | |
254 | }, | |
255 | { | |
256 | .callback = dmi_matched, | |
257 | .ident = "Dell Inspiron 5720", | |
258 | .matches = { | |
259 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 260 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"), |
5f1e88f4 AK |
261 | }, |
262 | .driver_data = &quirk_dell_vostro_v130, | |
263 | }, | |
264 | { | |
265 | .callback = dmi_matched, | |
266 | .ident = "Dell Inspiron 7420", | |
267 | .matches = { | |
268 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 269 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"), |
5f1e88f4 AK |
270 | }, |
271 | .driver_data = &quirk_dell_vostro_v130, | |
272 | }, | |
273 | { | |
274 | .callback = dmi_matched, | |
275 | .ident = "Dell Inspiron 7520", | |
276 | .matches = { | |
277 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 278 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"), |
5f1e88f4 AK |
279 | }, |
280 | .driver_data = &quirk_dell_vostro_v130, | |
281 | }, | |
282 | { | |
283 | .callback = dmi_matched, | |
284 | .ident = "Dell Inspiron 7720", | |
285 | .matches = { | |
286 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
a2174ba2 | 287 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), |
5f1e88f4 AK |
288 | }, |
289 | .driver_data = &quirk_dell_vostro_v130, | |
290 | }, | |
6cff8d60 GM |
291 | { |
292 | .callback = dmi_matched, | |
293 | .ident = "Dell XPS13 9333", | |
294 | .matches = { | |
295 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
296 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"), | |
297 | }, | |
298 | .driver_data = &quirk_dell_xps13_9333, | |
299 | }, | |
e6a7379f TK |
300 | { |
301 | .callback = dmi_matched, | |
302 | .ident = "Dell XPS 13 9370", | |
303 | .matches = { | |
304 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
305 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9370"), | |
306 | }, | |
307 | .driver_data = &quirk_dell_xps13_9370, | |
308 | }, | |
e20a8e77 PR |
309 | { |
310 | .callback = dmi_matched, | |
311 | .ident = "Dell Latitude E6410", | |
312 | .matches = { | |
313 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
314 | DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6410"), | |
315 | }, | |
316 | .driver_data = &quirk_dell_latitude_e6410, | |
317 | }, | |
10b65e29 PTG |
318 | { |
319 | .callback = dmi_matched, | |
320 | .ident = "Dell Inspiron 1012", | |
321 | .matches = { | |
322 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
323 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), | |
324 | }, | |
325 | .driver_data = &quirk_dell_inspiron_1012, | |
326 | }, | |
327 | { | |
328 | .callback = dmi_matched, | |
329 | .ident = "Dell Inspiron 1018", | |
330 | .matches = { | |
331 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
332 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1018"), | |
333 | }, | |
334 | .driver_data = &quirk_dell_inspiron_1012, | |
335 | }, | |
d62d421b | 336 | { } |
2d8b90be AK |
337 | }; |
338 | ||
9862b436 ML |
339 | static void dell_fill_request(struct calling_interface_buffer *buffer, |
340 | u32 arg0, u32 arg1, u32 arg2, u32 arg3) | |
549b4930 ML |
341 | { |
342 | memset(buffer, 0, sizeof(struct calling_interface_buffer)); | |
343 | buffer->input[0] = arg0; | |
344 | buffer->input[1] = arg1; | |
345 | buffer->input[2] = arg2; | |
346 | buffer->input[3] = arg3; | |
347 | } | |
348 | ||
9862b436 ML |
349 | static int dell_send_request(struct calling_interface_buffer *buffer, |
350 | u16 class, u16 select) | |
549b4930 ML |
351 | { |
352 | int ret; | |
353 | ||
354 | buffer->cmd_class = class; | |
355 | buffer->cmd_select = select; | |
356 | ret = dell_smbios_call(buffer); | |
357 | if (ret != 0) | |
358 | return ret; | |
359 | return dell_smbios_error(buffer->output[0]); | |
360 | } | |
361 | ||
f992efbb PR |
362 | /* |
363 | * Derived from information in smbios-wireless-ctl: | |
364 | * | |
365 | * cbSelect 17, Value 11 | |
366 | * | |
367 | * Return Wireless Info | |
368 | * cbArg1, byte0 = 0x00 | |
369 | * | |
370 | * cbRes1 Standard return codes (0, -1, -2) | |
371 | * cbRes2 Info bit flags: | |
372 | * | |
373 | * 0 Hardware switch supported (1) | |
374 | * 1 WiFi locator supported (1) | |
375 | * 2 WLAN supported (1) | |
376 | * 3 Bluetooth (BT) supported (1) | |
377 | * 4 WWAN supported (1) | |
378 | * 5 Wireless KBD supported (1) | |
379 | * 6 Uw b supported (1) | |
380 | * 7 WiGig supported (1) | |
381 | * 8 WLAN installed (1) | |
382 | * 9 BT installed (1) | |
383 | * 10 WWAN installed (1) | |
384 | * 11 Uw b installed (1) | |
385 | * 12 WiGig installed (1) | |
386 | * 13-15 Reserved (0) | |
387 | * 16 Hardware (HW) switch is On (1) | |
388 | * 17 WLAN disabled (1) | |
389 | * 18 BT disabled (1) | |
390 | * 19 WWAN disabled (1) | |
391 | * 20 Uw b disabled (1) | |
392 | * 21 WiGig disabled (1) | |
393 | * 20-31 Reserved (0) | |
394 | * | |
395 | * cbRes3 NVRAM size in bytes | |
396 | * cbRes4, byte 0 NVRAM format version number | |
397 | * | |
398 | * | |
399 | * Set QuickSet Radio Disable Flag | |
400 | * cbArg1, byte0 = 0x01 | |
401 | * cbArg1, byte1 | |
402 | * Radio ID value: | |
403 | * 0 Radio Status | |
404 | * 1 WLAN ID | |
405 | * 2 BT ID | |
406 | * 3 WWAN ID | |
407 | * 4 UWB ID | |
408 | * 5 WIGIG ID | |
409 | * cbArg1, byte2 Flag bits: | |
410 | * 0 QuickSet disables radio (1) | |
411 | * 1-7 Reserved (0) | |
412 | * | |
413 | * cbRes1 Standard return codes (0, -1, -2) | |
414 | * cbRes2 QuickSet (QS) radio disable bit map: | |
415 | * 0 QS disables WLAN | |
416 | * 1 QS disables BT | |
417 | * 2 QS disables WWAN | |
418 | * 3 QS disables UWB | |
419 | * 4 QS disables WIGIG | |
420 | * 5-31 Reserved (0) | |
421 | * | |
422 | * Wireless Switch Configuration | |
423 | * cbArg1, byte0 = 0x02 | |
424 | * | |
425 | * cbArg1, byte1 | |
426 | * Subcommand: | |
427 | * 0 Get config | |
428 | * 1 Set config | |
429 | * 2 Set WiFi locator enable/disable | |
430 | * cbArg1,byte2 | |
431 | * Switch settings (if byte 1==1): | |
432 | * 0 WLAN sw itch control (1) | |
433 | * 1 BT sw itch control (1) | |
434 | * 2 WWAN sw itch control (1) | |
435 | * 3 UWB sw itch control (1) | |
436 | * 4 WiGig sw itch control (1) | |
437 | * 5-7 Reserved (0) | |
438 | * cbArg1, byte2 Enable bits (if byte 1==2): | |
439 | * 0 Enable WiFi locator (1) | |
440 | * | |
441 | * cbRes1 Standard return codes (0, -1, -2) | |
442 | * cbRes2 QuickSet radio disable bit map: | |
443 | * 0 WLAN controlled by sw itch (1) | |
444 | * 1 BT controlled by sw itch (1) | |
445 | * 2 WWAN controlled by sw itch (1) | |
446 | * 3 UWB controlled by sw itch (1) | |
447 | * 4 WiGig controlled by sw itch (1) | |
448 | * 5-6 Reserved (0) | |
449 | * 7 Wireless sw itch config locked (1) | |
450 | * 8 WiFi locator enabled (1) | |
451 | * 9-14 Reserved (0) | |
452 | * 15 WiFi locator setting locked (1) | |
453 | * 16-31 Reserved (0) | |
454 | * | |
455 | * Read Local Config Data (LCD) | |
456 | * cbArg1, byte0 = 0x10 | |
457 | * cbArg1, byte1 NVRAM index low byte | |
458 | * cbArg1, byte2 NVRAM index high byte | |
459 | * cbRes1 Standard return codes (0, -1, -2) | |
460 | * cbRes2 4 bytes read from LCD[index] | |
461 | * cbRes3 4 bytes read from LCD[index+4] | |
462 | * cbRes4 4 bytes read from LCD[index+8] | |
463 | * | |
464 | * Write Local Config Data (LCD) | |
465 | * cbArg1, byte0 = 0x11 | |
466 | * cbArg1, byte1 NVRAM index low byte | |
467 | * cbArg1, byte2 NVRAM index high byte | |
468 | * cbArg2 4 bytes to w rite at LCD[index] | |
469 | * cbArg3 4 bytes to w rite at LCD[index+4] | |
470 | * cbArg4 4 bytes to w rite at LCD[index+8] | |
471 | * cbRes1 Standard return codes (0, -1, -2) | |
472 | * | |
473 | * Populate Local Config Data from NVRAM | |
474 | * cbArg1, byte0 = 0x12 | |
475 | * cbRes1 Standard return codes (0, -1, -2) | |
476 | * | |
477 | * Commit Local Config Data to NVRAM | |
478 | * cbArg1, byte0 = 0x13 | |
479 | * cbRes1 Standard return codes (0, -1, -2) | |
480 | */ | |
4cc8a574 HG |
481 | |
482 | static int dell_rfkill_set(void *data, bool blocked) | |
483 | { | |
484 | int disable = blocked ? 1 : 0; | |
485 | unsigned long radio = (unsigned long)data; | |
486 | int hwswitch_bit = (unsigned long)data - 1; | |
9862b436 | 487 | struct calling_interface_buffer buffer; |
22565ba0 PR |
488 | int hwswitch; |
489 | int status; | |
715d0cdd | 490 | int ret; |
4cc8a574 | 491 | |
9862b436 ML |
492 | dell_fill_request(&buffer, 0, 0, 0, 0); |
493 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
549b4930 ML |
494 | if (ret) |
495 | return ret; | |
9862b436 | 496 | status = buffer.output[1]; |
715d0cdd | 497 | |
9862b436 ML |
498 | dell_fill_request(&buffer, 0x2, 0, 0, 0); |
499 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
549b4930 ML |
500 | if (ret) |
501 | return ret; | |
9862b436 | 502 | hwswitch = buffer.output[1]; |
22565ba0 | 503 | |
4cc8a574 | 504 | /* If the hardware switch controls this radio, and the hardware |
ed112898 | 505 | switch is disabled, always disable the radio */ |
22565ba0 PR |
506 | if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) && |
507 | (status & BIT(0)) && !(status & BIT(16))) | |
ed112898 | 508 | disable = 1; |
4cc8a574 | 509 | |
9862b436 ML |
510 | dell_fill_request(&buffer, 1 | (radio<<8) | (disable << 16), 0, 0, 0); |
511 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
549b4930 | 512 | return ret; |
4cc8a574 HG |
513 | } |
514 | ||
33f9359a | 515 | static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, |
549b4930 | 516 | int status) |
d038880e | 517 | { |
04c9a3a0 HG |
518 | if (status & BIT(0)) { |
519 | /* Has hw-switch, sync sw_state to BIOS */ | |
9862b436 | 520 | struct calling_interface_buffer buffer; |
04c9a3a0 | 521 | int block = rfkill_blocked(rfkill); |
9862b436 ML |
522 | dell_fill_request(&buffer, |
523 | 1 | (radio << 8) | (block << 16), 0, 0, 0); | |
524 | dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
04c9a3a0 | 525 | } else { |
3f56588a HG |
526 | /* No hw-switch, sync BIOS state to sw_state */ |
527 | rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); | |
528 | } | |
33f9359a | 529 | } |
d038880e | 530 | |
33f9359a | 531 | static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio, |
22565ba0 | 532 | int status, int hwswitch) |
33f9359a | 533 | { |
22565ba0 | 534 | if (hwswitch & (BIT(radio - 1))) |
d038880e HG |
535 | rfkill_set_hw_state(rfkill, !(status & BIT(16))); |
536 | } | |
537 | ||
4cc8a574 HG |
538 | static void dell_rfkill_query(struct rfkill *rfkill, void *data) |
539 | { | |
22565ba0 | 540 | int radio = ((unsigned long)data & 0xF); |
9862b436 | 541 | struct calling_interface_buffer buffer; |
22565ba0 | 542 | int hwswitch; |
4cc8a574 | 543 | int status; |
715d0cdd | 544 | int ret; |
4cc8a574 | 545 | |
9862b436 ML |
546 | dell_fill_request(&buffer, 0, 0, 0, 0); |
547 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
548 | status = buffer.output[1]; | |
22565ba0 PR |
549 | |
550 | if (ret != 0 || !(status & BIT(0))) { | |
22565ba0 PR |
551 | return; |
552 | } | |
553 | ||
6cc13c28 | 554 | dell_fill_request(&buffer, 0x2, 0, 0, 0); |
9862b436 ML |
555 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); |
556 | hwswitch = buffer.output[1]; | |
22565ba0 | 557 | |
715d0cdd PR |
558 | if (ret != 0) |
559 | return; | |
04c9a3a0 | 560 | |
22565ba0 | 561 | dell_rfkill_update_hw_state(rfkill, radio, status, hwswitch); |
4cc8a574 HG |
562 | } |
563 | ||
564 | static const struct rfkill_ops dell_rfkill_ops = { | |
565 | .set_block = dell_rfkill_set, | |
566 | .query = dell_rfkill_query, | |
567 | }; | |
568 | ||
037accfa KYL |
569 | static struct dentry *dell_laptop_dir; |
570 | ||
571 | static int dell_debugfs_show(struct seq_file *s, void *data) | |
572 | { | |
9862b436 | 573 | struct calling_interface_buffer buffer; |
22565ba0 PR |
574 | int hwswitch_state; |
575 | int hwswitch_ret; | |
037accfa | 576 | int status; |
715d0cdd | 577 | int ret; |
037accfa | 578 | |
9862b436 ML |
579 | dell_fill_request(&buffer, 0, 0, 0, 0); |
580 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
549b4930 ML |
581 | if (ret) |
582 | return ret; | |
9862b436 | 583 | status = buffer.output[1]; |
22565ba0 | 584 | |
6cc13c28 | 585 | dell_fill_request(&buffer, 0x2, 0, 0, 0); |
9862b436 | 586 | hwswitch_ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); |
549b4930 ML |
587 | if (hwswitch_ret) |
588 | return hwswitch_ret; | |
9862b436 | 589 | hwswitch_state = buffer.output[1]; |
22565ba0 | 590 | |
715d0cdd | 591 | seq_printf(s, "return:\t%d\n", ret); |
037accfa KYL |
592 | seq_printf(s, "status:\t0x%X\n", status); |
593 | seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n", | |
594 | status & BIT(0)); | |
595 | seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n", | |
596 | (status & BIT(1)) >> 1); | |
597 | seq_printf(s, "Bit 2 : Wifi is supported: %lu\n", | |
598 | (status & BIT(2)) >> 2); | |
599 | seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n", | |
600 | (status & BIT(3)) >> 3); | |
601 | seq_printf(s, "Bit 4 : WWAN is supported: %lu\n", | |
602 | (status & BIT(4)) >> 4); | |
603 | seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", | |
604 | (status & BIT(5)) >> 5); | |
2e19f93f PR |
605 | seq_printf(s, "Bit 6 : UWB supported: %lu\n", |
606 | (status & BIT(6)) >> 6); | |
607 | seq_printf(s, "Bit 7 : WiGig supported: %lu\n", | |
608 | (status & BIT(7)) >> 7); | |
037accfa KYL |
609 | seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", |
610 | (status & BIT(8)) >> 8); | |
611 | seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", | |
612 | (status & BIT(9)) >> 9); | |
613 | seq_printf(s, "Bit 10: WWAN is installed: %lu\n", | |
614 | (status & BIT(10)) >> 10); | |
2e19f93f PR |
615 | seq_printf(s, "Bit 11: UWB installed: %lu\n", |
616 | (status & BIT(11)) >> 11); | |
617 | seq_printf(s, "Bit 12: WiGig installed: %lu\n", | |
618 | (status & BIT(12)) >> 12); | |
619 | ||
037accfa KYL |
620 | seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", |
621 | (status & BIT(16)) >> 16); | |
622 | seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", | |
623 | (status & BIT(17)) >> 17); | |
624 | seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n", | |
625 | (status & BIT(18)) >> 18); | |
626 | seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", | |
627 | (status & BIT(19)) >> 19); | |
2e19f93f PR |
628 | seq_printf(s, "Bit 20: UWB is blocked: %lu\n", |
629 | (status & BIT(20)) >> 20); | |
630 | seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", | |
631 | (status & BIT(21)) >> 21); | |
037accfa | 632 | |
22565ba0 PR |
633 | seq_printf(s, "\nhwswitch_return:\t%d\n", hwswitch_ret); |
634 | seq_printf(s, "hwswitch_state:\t0x%X\n", hwswitch_state); | |
037accfa KYL |
635 | seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", |
636 | hwswitch_state & BIT(0)); | |
637 | seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n", | |
638 | (hwswitch_state & BIT(1)) >> 1); | |
639 | seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", | |
640 | (hwswitch_state & BIT(2)) >> 2); | |
2e19f93f PR |
641 | seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", |
642 | (hwswitch_state & BIT(3)) >> 3); | |
643 | seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", | |
644 | (hwswitch_state & BIT(4)) >> 4); | |
037accfa KYL |
645 | seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", |
646 | (hwswitch_state & BIT(7)) >> 7); | |
647 | seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", | |
648 | (hwswitch_state & BIT(8)) >> 8); | |
649 | seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n", | |
650 | (hwswitch_state & BIT(15)) >> 15); | |
651 | ||
652 | return 0; | |
653 | } | |
b04eb8aa | 654 | DEFINE_SHOW_ATTRIBUTE(dell_debugfs); |
037accfa | 655 | |
4cc8a574 HG |
656 | static void dell_update_rfkill(struct work_struct *ignored) |
657 | { | |
9862b436 | 658 | struct calling_interface_buffer buffer; |
22565ba0 | 659 | int hwswitch = 0; |
d038880e | 660 | int status; |
715d0cdd | 661 | int ret; |
d038880e | 662 | |
9862b436 ML |
663 | dell_fill_request(&buffer, 0, 0, 0, 0); |
664 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
665 | status = buffer.output[1]; | |
d038880e | 666 | |
715d0cdd | 667 | if (ret != 0) |
549b4930 | 668 | return; |
22565ba0 | 669 | |
6cc13c28 | 670 | dell_fill_request(&buffer, 0x2, 0, 0, 0); |
9862b436 | 671 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); |
22565ba0 PR |
672 | |
673 | if (ret == 0 && (status & BIT(0))) | |
9862b436 | 674 | hwswitch = buffer.output[1]; |
22565ba0 | 675 | |
33f9359a | 676 | if (wifi_rfkill) { |
22565ba0 | 677 | dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch); |
549b4930 | 678 | dell_rfkill_update_sw_state(wifi_rfkill, 1, status); |
33f9359a HG |
679 | } |
680 | if (bluetooth_rfkill) { | |
22565ba0 PR |
681 | dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status, |
682 | hwswitch); | |
549b4930 | 683 | dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status); |
33f9359a HG |
684 | } |
685 | if (wwan_rfkill) { | |
22565ba0 | 686 | dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch); |
549b4930 | 687 | dell_rfkill_update_sw_state(wwan_rfkill, 3, status); |
33f9359a | 688 | } |
4cc8a574 HG |
689 | } |
690 | static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); | |
691 | ||
97f440c2 HG |
692 | static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, |
693 | struct serio *port) | |
694 | { | |
695 | static bool extended; | |
696 | ||
98280374 | 697 | if (str & I8042_STR_AUXDATA) |
97f440c2 HG |
698 | return false; |
699 | ||
700 | if (unlikely(data == 0xe0)) { | |
701 | extended = true; | |
702 | return false; | |
703 | } else if (unlikely(extended)) { | |
704 | switch (data) { | |
705 | case 0x8: | |
706 | schedule_delayed_work(&dell_rfkill_work, | |
707 | round_jiffies_relative(HZ / 4)); | |
708 | break; | |
709 | } | |
710 | extended = false; | |
711 | } | |
712 | ||
713 | return false; | |
714 | } | |
4cc8a574 | 715 | |
f8358578 PR |
716 | static int (*dell_rbtn_notifier_register_func)(struct notifier_block *); |
717 | static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *); | |
718 | ||
719 | static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb, | |
720 | unsigned long action, void *data) | |
721 | { | |
722 | schedule_delayed_work(&dell_rfkill_work, 0); | |
723 | return NOTIFY_OK; | |
724 | } | |
725 | ||
726 | static struct notifier_block dell_laptop_rbtn_notifier = { | |
727 | .notifier_call = dell_laptop_rbtn_notifier_call, | |
728 | }; | |
729 | ||
4cc8a574 HG |
730 | static int __init dell_setup_rfkill(void) |
731 | { | |
9862b436 | 732 | struct calling_interface_buffer buffer; |
ba5194f1 | 733 | int status, ret, whitelisted; |
2a925518 HG |
734 | const char *product; |
735 | ||
736 | /* | |
ba5194f1 HG |
737 | * rfkill support causes trouble on various models, mostly Inspirons. |
738 | * So we whitelist certain series, and don't support rfkill on others. | |
2a925518 | 739 | */ |
ba5194f1 | 740 | whitelisted = 0; |
2a925518 | 741 | product = dmi_get_system_info(DMI_PRODUCT_NAME); |
ba5194f1 HG |
742 | if (product && (strncmp(product, "Latitude", 8) == 0 || |
743 | strncmp(product, "Precision", 9) == 0)) | |
744 | whitelisted = 1; | |
745 | if (!force_rfkill && !whitelisted) | |
4cc8a574 | 746 | return 0; |
4cc8a574 | 747 | |
9862b436 ML |
748 | dell_fill_request(&buffer, 0, 0, 0, 0); |
749 | ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); | |
750 | status = buffer.output[1]; | |
4cc8a574 | 751 | |
715d0cdd PR |
752 | /* dell wireless info smbios call is not supported */ |
753 | if (ret != 0) | |
754 | return 0; | |
755 | ||
22565ba0 PR |
756 | /* rfkill is only tested on laptops with a hwswitch */ |
757 | if (!(status & BIT(0)) && !force_rfkill) | |
758 | return 0; | |
2bd4ac13 | 759 | |
4cc8a574 HG |
760 | if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { |
761 | wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, | |
762 | RFKILL_TYPE_WLAN, | |
763 | &dell_rfkill_ops, (void *) 1); | |
764 | if (!wifi_rfkill) { | |
765 | ret = -ENOMEM; | |
766 | goto err_wifi; | |
767 | } | |
768 | ret = rfkill_register(wifi_rfkill); | |
769 | if (ret) | |
770 | goto err_wifi; | |
771 | } | |
772 | ||
773 | if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { | |
774 | bluetooth_rfkill = rfkill_alloc("dell-bluetooth", | |
775 | &platform_device->dev, | |
776 | RFKILL_TYPE_BLUETOOTH, | |
777 | &dell_rfkill_ops, (void *) 2); | |
778 | if (!bluetooth_rfkill) { | |
779 | ret = -ENOMEM; | |
780 | goto err_bluetooth; | |
781 | } | |
782 | ret = rfkill_register(bluetooth_rfkill); | |
783 | if (ret) | |
784 | goto err_bluetooth; | |
785 | } | |
786 | ||
787 | if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { | |
788 | wwan_rfkill = rfkill_alloc("dell-wwan", | |
789 | &platform_device->dev, | |
790 | RFKILL_TYPE_WWAN, | |
791 | &dell_rfkill_ops, (void *) 3); | |
792 | if (!wwan_rfkill) { | |
793 | ret = -ENOMEM; | |
794 | goto err_wwan; | |
795 | } | |
796 | ret = rfkill_register(wwan_rfkill); | |
797 | if (ret) | |
798 | goto err_wwan; | |
799 | } | |
800 | ||
f8358578 PR |
801 | /* |
802 | * Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices | |
803 | * which can receive events from HW slider switch. | |
804 | * | |
805 | * Dell SMBIOS on whitelisted models supports controlling radio devices | |
806 | * but does not support receiving HW button switch events. We can use | |
807 | * i8042 filter hook function to receive keyboard data and handle | |
808 | * keycode for HW button. | |
809 | * | |
810 | * So if it is possible we will use Dell Airplane Mode Switch ACPI | |
811 | * driver for receiving HW events and Dell SMBIOS for setting rfkill | |
812 | * states. If ACPI driver or device is not available we will fallback to | |
813 | * i8042 filter hook function. | |
814 | * | |
815 | * To prevent duplicate rfkill devices which control and do same thing, | |
816 | * dell-rbtn driver will automatically remove its own rfkill devices | |
817 | * once function dell_rbtn_notifier_register() is called. | |
818 | */ | |
819 | ||
820 | dell_rbtn_notifier_register_func = | |
821 | symbol_request(dell_rbtn_notifier_register); | |
822 | if (dell_rbtn_notifier_register_func) { | |
823 | dell_rbtn_notifier_unregister_func = | |
824 | symbol_request(dell_rbtn_notifier_unregister); | |
825 | if (!dell_rbtn_notifier_unregister_func) { | |
826 | symbol_put(dell_rbtn_notifier_register); | |
827 | dell_rbtn_notifier_register_func = NULL; | |
828 | } | |
829 | } | |
830 | ||
831 | if (dell_rbtn_notifier_register_func) { | |
832 | ret = dell_rbtn_notifier_register_func( | |
833 | &dell_laptop_rbtn_notifier); | |
834 | symbol_put(dell_rbtn_notifier_register); | |
835 | dell_rbtn_notifier_register_func = NULL; | |
836 | if (ret != 0) { | |
837 | symbol_put(dell_rbtn_notifier_unregister); | |
838 | dell_rbtn_notifier_unregister_func = NULL; | |
839 | } | |
840 | } else { | |
841 | pr_info("Symbols from dell-rbtn acpi driver are not available\n"); | |
842 | ret = -ENODEV; | |
843 | } | |
844 | ||
845 | if (ret == 0) { | |
846 | pr_info("Using dell-rbtn acpi driver for receiving events\n"); | |
847 | } else if (ret != -ENODEV) { | |
848 | pr_warn("Unable to register dell rbtn notifier\n"); | |
97f440c2 | 849 | goto err_filter; |
f8358578 PR |
850 | } else { |
851 | ret = i8042_install_filter(dell_laptop_i8042_filter); | |
852 | if (ret) { | |
853 | pr_warn("Unable to install key filter\n"); | |
854 | goto err_filter; | |
855 | } | |
856 | pr_info("Using i8042 filter function for receiving events\n"); | |
97f440c2 HG |
857 | } |
858 | ||
4cc8a574 | 859 | return 0; |
97f440c2 HG |
860 | err_filter: |
861 | if (wwan_rfkill) | |
862 | rfkill_unregister(wwan_rfkill); | |
4cc8a574 HG |
863 | err_wwan: |
864 | rfkill_destroy(wwan_rfkill); | |
865 | if (bluetooth_rfkill) | |
866 | rfkill_unregister(bluetooth_rfkill); | |
867 | err_bluetooth: | |
868 | rfkill_destroy(bluetooth_rfkill); | |
869 | if (wifi_rfkill) | |
870 | rfkill_unregister(wifi_rfkill); | |
871 | err_wifi: | |
872 | rfkill_destroy(wifi_rfkill); | |
873 | ||
874 | return ret; | |
875 | } | |
876 | ||
877 | static void dell_cleanup_rfkill(void) | |
878 | { | |
f8358578 PR |
879 | if (dell_rbtn_notifier_unregister_func) { |
880 | dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier); | |
881 | symbol_put(dell_rbtn_notifier_unregister); | |
882 | dell_rbtn_notifier_unregister_func = NULL; | |
883 | } else { | |
884 | i8042_remove_filter(dell_laptop_i8042_filter); | |
885 | } | |
886 | cancel_delayed_work_sync(&dell_rfkill_work); | |
4cc8a574 HG |
887 | if (wifi_rfkill) { |
888 | rfkill_unregister(wifi_rfkill); | |
889 | rfkill_destroy(wifi_rfkill); | |
890 | } | |
891 | if (bluetooth_rfkill) { | |
892 | rfkill_unregister(bluetooth_rfkill); | |
893 | rfkill_destroy(bluetooth_rfkill); | |
894 | } | |
895 | if (wwan_rfkill) { | |
896 | rfkill_unregister(wwan_rfkill); | |
897 | rfkill_destroy(wwan_rfkill); | |
898 | } | |
899 | } | |
900 | ||
ad8f07cc MG |
901 | static int dell_send_intensity(struct backlight_device *bd) |
902 | { | |
9862b436 | 903 | struct calling_interface_buffer buffer; |
f951d6e6 | 904 | struct calling_interface_token *token; |
715d0cdd PR |
905 | int ret; |
906 | ||
f951d6e6 MK |
907 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
908 | if (!token) | |
715d0cdd | 909 | return -ENODEV; |
ad8f07cc | 910 | |
9862b436 ML |
911 | dell_fill_request(&buffer, |
912 | token->location, bd->props.brightness, 0, 0); | |
ad8f07cc | 913 | if (power_supply_is_system_supplied() > 0) |
9862b436 ML |
914 | ret = dell_send_request(&buffer, |
915 | CLASS_TOKEN_WRITE, SELECT_TOKEN_AC); | |
ad8f07cc | 916 | else |
9862b436 ML |
917 | ret = dell_send_request(&buffer, |
918 | CLASS_TOKEN_WRITE, SELECT_TOKEN_BAT); | |
ad8f07cc | 919 | |
7da8fb27 | 920 | return ret; |
ad8f07cc MG |
921 | } |
922 | ||
923 | static int dell_get_intensity(struct backlight_device *bd) | |
924 | { | |
9862b436 | 925 | struct calling_interface_buffer buffer; |
f951d6e6 | 926 | struct calling_interface_token *token; |
715d0cdd | 927 | int ret; |
ad8f07cc | 928 | |
f951d6e6 MK |
929 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
930 | if (!token) | |
715d0cdd | 931 | return -ENODEV; |
ad8f07cc | 932 | |
9862b436 | 933 | dell_fill_request(&buffer, token->location, 0, 0, 0); |
ad8f07cc | 934 | if (power_supply_is_system_supplied() > 0) |
9862b436 ML |
935 | ret = dell_send_request(&buffer, |
936 | CLASS_TOKEN_READ, SELECT_TOKEN_AC); | |
ad8f07cc | 937 | else |
9862b436 ML |
938 | ret = dell_send_request(&buffer, |
939 | CLASS_TOKEN_READ, SELECT_TOKEN_BAT); | |
ad8f07cc | 940 | |
549b4930 | 941 | if (ret == 0) |
9862b436 ML |
942 | ret = buffer.output[1]; |
943 | ||
b486742a | 944 | return ret; |
ad8f07cc MG |
945 | } |
946 | ||
acc2472e | 947 | static const struct backlight_ops dell_ops = { |
ad8f07cc MG |
948 | .get_brightness = dell_get_intensity, |
949 | .update_status = dell_send_intensity, | |
950 | }; | |
951 | ||
869f8dfa | 952 | static void touchpad_led_on(void) |
2d8b90be AK |
953 | { |
954 | int command = 0x97; | |
955 | char data = 1; | |
956 | i8042_command(&data, command | 1 << 12); | |
957 | } | |
958 | ||
869f8dfa | 959 | static void touchpad_led_off(void) |
2d8b90be AK |
960 | { |
961 | int command = 0x97; | |
962 | char data = 2; | |
963 | i8042_command(&data, command | 1 << 12); | |
964 | } | |
965 | ||
966 | static void touchpad_led_set(struct led_classdev *led_cdev, | |
967 | enum led_brightness value) | |
968 | { | |
969 | if (value > 0) | |
970 | touchpad_led_on(); | |
971 | else | |
972 | touchpad_led_off(); | |
973 | } | |
974 | ||
975 | static struct led_classdev touchpad_led = { | |
976 | .name = "dell-laptop::touchpad", | |
977 | .brightness_set = touchpad_led_set, | |
2d5de9e8 | 978 | .flags = LED_CORE_SUSPENDRESUME, |
2d8b90be AK |
979 | }; |
980 | ||
681480cc | 981 | static int __init touchpad_led_init(struct device *dev) |
2d8b90be AK |
982 | { |
983 | return led_classdev_register(dev, &touchpad_led); | |
984 | } | |
985 | ||
986 | static void touchpad_led_exit(void) | |
987 | { | |
988 | led_classdev_unregister(&touchpad_led); | |
989 | } | |
990 | ||
6cff8d60 GM |
991 | /* |
992 | * Derived from information in smbios-keyboard-ctl: | |
993 | * | |
994 | * cbClass 4 | |
995 | * cbSelect 11 | |
996 | * Keyboard illumination | |
997 | * cbArg1 determines the function to be performed | |
998 | * | |
999 | * cbArg1 0x0 = Get Feature Information | |
1000 | * cbRES1 Standard return codes (0, -1, -2) | |
1001 | * cbRES2, word0 Bitmap of user-selectable modes | |
1002 | * bit 0 Always off (All systems) | |
1003 | * bit 1 Always on (Travis ATG, Siberia) | |
1004 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1005 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1006 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1007 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1008 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1009 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1010 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1011 | * bits 9-15 Reserved for future use | |
1012 | * cbRES2, byte2 Reserved for future use | |
1013 | * cbRES2, byte3 Keyboard illumination type | |
1014 | * 0 Reserved | |
1015 | * 1 Tasklight | |
1016 | * 2 Backlight | |
1017 | * 3-255 Reserved for future use | |
1018 | * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap. | |
1019 | * bit 0 Any keystroke | |
1020 | * bit 1 Touchpad activity | |
1021 | * bit 2 Pointing stick | |
1022 | * bit 3 Any mouse | |
1023 | * bits 4-7 Reserved for future use | |
1024 | * cbRES3, byte1 Supported timeout unit bitmap | |
1025 | * bit 0 Seconds | |
1026 | * bit 1 Minutes | |
1027 | * bit 2 Hours | |
1028 | * bit 3 Days | |
1029 | * bits 4-7 Reserved for future use | |
1030 | * cbRES3, byte2 Number of keyboard light brightness levels | |
1031 | * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported). | |
1032 | * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported). | |
1033 | * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported). | |
1034 | * cbRES4, byte3 Maximum acceptable days value (0 if days not supported) | |
1035 | * | |
1036 | * cbArg1 0x1 = Get Current State | |
1037 | * cbRES1 Standard return codes (0, -1, -2) | |
1038 | * cbRES2, word0 Bitmap of current mode state | |
1039 | * bit 0 Always off (All systems) | |
1040 | * bit 1 Always on (Travis ATG, Siberia) | |
1041 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1042 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1043 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1044 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1045 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1046 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1047 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1048 | * bits 9-15 Reserved for future use | |
1049 | * Note: Only One bit can be set | |
1050 | * cbRES2, byte2 Currently active auto keyboard illumination triggers. | |
1051 | * bit 0 Any keystroke | |
1052 | * bit 1 Touchpad activity | |
1053 | * bit 2 Pointing stick | |
1054 | * bit 3 Any mouse | |
1055 | * bits 4-7 Reserved for future use | |
9216e0dc | 1056 | * cbRES2, byte3 Current Timeout on battery |
6cff8d60 GM |
1057 | * bits 7:6 Timeout units indicator: |
1058 | * 00b Seconds | |
1059 | * 01b Minutes | |
1060 | * 10b Hours | |
1061 | * 11b Days | |
1062 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1063 | * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte | |
1064 | * are set upon return from the [Get feature information] call. | |
1065 | * cbRES3, byte0 Current setting of ALS value that turns the light on or off. | |
1066 | * cbRES3, byte1 Current ALS reading | |
1067 | * cbRES3, byte2 Current keyboard light level. | |
9216e0dc PR |
1068 | * cbRES3, byte3 Current timeout on AC Power |
1069 | * bits 7:6 Timeout units indicator: | |
1070 | * 00b Seconds | |
1071 | * 01b Minutes | |
1072 | * 10b Hours | |
1073 | * 11b Days | |
1074 | * Bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1075 | * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte2 | |
1076 | * are set upon return from the upon return from the [Get Feature information] call. | |
6cff8d60 GM |
1077 | * |
1078 | * cbArg1 0x2 = Set New State | |
1079 | * cbRES1 Standard return codes (0, -1, -2) | |
1080 | * cbArg2, word0 Bitmap of current mode state | |
1081 | * bit 0 Always off (All systems) | |
1082 | * bit 1 Always on (Travis ATG, Siberia) | |
1083 | * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) | |
1084 | * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off | |
1085 | * bit 4 Auto: Input-activity-based On; input-activity based Off | |
1086 | * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off | |
1087 | * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off | |
1088 | * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off | |
1089 | * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off | |
1090 | * bits 9-15 Reserved for future use | |
1091 | * Note: Only One bit can be set | |
1092 | * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow | |
1093 | * keyboard to turn off automatically. | |
1094 | * bit 0 Any keystroke | |
1095 | * bit 1 Touchpad activity | |
1096 | * bit 2 Pointing stick | |
1097 | * bit 3 Any mouse | |
1098 | * bits 4-7 Reserved for future use | |
9216e0dc | 1099 | * cbArg2, byte3 Desired Timeout on battery |
6cff8d60 GM |
1100 | * bits 7:6 Timeout units indicator: |
1101 | * 00b Seconds | |
1102 | * 01b Minutes | |
1103 | * 10b Hours | |
1104 | * 11b Days | |
1105 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
1106 | * cbArg3, byte0 Desired setting of ALS value that turns the light on or off. | |
1107 | * cbArg3, byte2 Desired keyboard light level. | |
9216e0dc PR |
1108 | * cbArg3, byte3 Desired Timeout on AC power |
1109 | * bits 7:6 Timeout units indicator: | |
1110 | * 00b Seconds | |
1111 | * 01b Minutes | |
1112 | * 10b Hours | |
1113 | * 11b Days | |
1114 | * bits 5:0 Timeout value (0-63) in sec/min/hr/day | |
6cff8d60 GM |
1115 | */ |
1116 | ||
1117 | ||
1118 | enum kbd_timeout_unit { | |
1119 | KBD_TIMEOUT_SECONDS = 0, | |
1120 | KBD_TIMEOUT_MINUTES, | |
1121 | KBD_TIMEOUT_HOURS, | |
1122 | KBD_TIMEOUT_DAYS, | |
1123 | }; | |
1124 | ||
1125 | enum kbd_mode_bit { | |
1126 | KBD_MODE_BIT_OFF = 0, | |
1127 | KBD_MODE_BIT_ON, | |
1128 | KBD_MODE_BIT_ALS, | |
1129 | KBD_MODE_BIT_TRIGGER_ALS, | |
1130 | KBD_MODE_BIT_TRIGGER, | |
1131 | KBD_MODE_BIT_TRIGGER_25, | |
1132 | KBD_MODE_BIT_TRIGGER_50, | |
1133 | KBD_MODE_BIT_TRIGGER_75, | |
1134 | KBD_MODE_BIT_TRIGGER_100, | |
1135 | }; | |
1136 | ||
1137 | #define kbd_is_als_mode_bit(bit) \ | |
1138 | ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS) | |
1139 | #define kbd_is_trigger_mode_bit(bit) \ | |
1140 | ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1141 | #define kbd_is_level_mode_bit(bit) \ | |
1142 | ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100) | |
1143 | ||
1144 | struct kbd_info { | |
1145 | u16 modes; | |
1146 | u8 type; | |
1147 | u8 triggers; | |
1148 | u8 levels; | |
1149 | u8 seconds; | |
1150 | u8 minutes; | |
1151 | u8 hours; | |
1152 | u8 days; | |
1153 | }; | |
1154 | ||
1155 | struct kbd_state { | |
1156 | u8 mode_bit; | |
1157 | u8 triggers; | |
1158 | u8 timeout_value; | |
1159 | u8 timeout_unit; | |
9216e0dc PR |
1160 | u8 timeout_value_ac; |
1161 | u8 timeout_unit_ac; | |
6cff8d60 GM |
1162 | u8 als_setting; |
1163 | u8 als_value; | |
1164 | u8 level; | |
1165 | }; | |
1166 | ||
1167 | static const int kbd_tokens[] = { | |
1168 | KBD_LED_OFF_TOKEN, | |
1169 | KBD_LED_AUTO_25_TOKEN, | |
1170 | KBD_LED_AUTO_50_TOKEN, | |
1171 | KBD_LED_AUTO_75_TOKEN, | |
1172 | KBD_LED_AUTO_100_TOKEN, | |
1173 | KBD_LED_ON_TOKEN, | |
1174 | }; | |
1175 | ||
1176 | static u16 kbd_token_bits; | |
1177 | ||
1178 | static struct kbd_info kbd_info; | |
1179 | static bool kbd_als_supported; | |
1180 | static bool kbd_triggers_supported; | |
9216e0dc | 1181 | static bool kbd_timeout_ac_supported; |
6cff8d60 GM |
1182 | |
1183 | static u8 kbd_mode_levels[16]; | |
1184 | static int kbd_mode_levels_count; | |
1185 | ||
1186 | static u8 kbd_previous_level; | |
1187 | static u8 kbd_previous_mode_bit; | |
1188 | ||
1189 | static bool kbd_led_present; | |
e5bf5df7 | 1190 | static DEFINE_MUTEX(kbd_led_mutex); |
4d6bde51 | 1191 | static enum led_brightness kbd_led_level; |
6cff8d60 GM |
1192 | |
1193 | /* | |
1194 | * NOTE: there are three ways to set the keyboard backlight level. | |
1195 | * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value). | |
1196 | * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels). | |
1197 | * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens) | |
1198 | * | |
1199 | * There are laptops which support only one of these methods. If we want to | |
1200 | * support as many machines as possible we need to implement all three methods. | |
1201 | * The first two methods use the kbd_state structure. The third uses SMBIOS | |
1202 | * tokens. If kbd_info.levels == 0, the machine does not support setting the | |
1203 | * keyboard backlight level via kbd_state.level. | |
1204 | */ | |
1205 | ||
1206 | static int kbd_get_info(struct kbd_info *info) | |
1207 | { | |
9862b436 | 1208 | struct calling_interface_buffer buffer; |
6cff8d60 GM |
1209 | u8 units; |
1210 | int ret; | |
1211 | ||
9862b436 ML |
1212 | dell_fill_request(&buffer, 0, 0, 0, 0); |
1213 | ret = dell_send_request(&buffer, | |
1214 | CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); | |
549b4930 ML |
1215 | if (ret) |
1216 | return ret; | |
6cff8d60 | 1217 | |
9862b436 ML |
1218 | info->modes = buffer.output[1] & 0xFFFF; |
1219 | info->type = (buffer.output[1] >> 24) & 0xFF; | |
1220 | info->triggers = buffer.output[2] & 0xFF; | |
1221 | units = (buffer.output[2] >> 8) & 0xFF; | |
1222 | info->levels = (buffer.output[2] >> 16) & 0xFF; | |
6cff8d60 | 1223 | |
e20a8e77 PR |
1224 | if (quirks && quirks->kbd_led_levels_off_1 && info->levels) |
1225 | info->levels--; | |
1226 | ||
6cff8d60 | 1227 | if (units & BIT(0)) |
9862b436 | 1228 | info->seconds = (buffer.output[3] >> 0) & 0xFF; |
6cff8d60 | 1229 | if (units & BIT(1)) |
9862b436 | 1230 | info->minutes = (buffer.output[3] >> 8) & 0xFF; |
6cff8d60 | 1231 | if (units & BIT(2)) |
9862b436 | 1232 | info->hours = (buffer.output[3] >> 16) & 0xFF; |
6cff8d60 | 1233 | if (units & BIT(3)) |
9862b436 | 1234 | info->days = (buffer.output[3] >> 24) & 0xFF; |
6cff8d60 | 1235 | |
6cff8d60 GM |
1236 | return ret; |
1237 | } | |
1238 | ||
1239 | static unsigned int kbd_get_max_level(void) | |
1240 | { | |
1241 | if (kbd_info.levels != 0) | |
1242 | return kbd_info.levels; | |
1243 | if (kbd_mode_levels_count > 0) | |
1244 | return kbd_mode_levels_count - 1; | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | static int kbd_get_level(struct kbd_state *state) | |
1249 | { | |
1250 | int i; | |
1251 | ||
1252 | if (kbd_info.levels != 0) | |
1253 | return state->level; | |
1254 | ||
1255 | if (kbd_mode_levels_count > 0) { | |
1256 | for (i = 0; i < kbd_mode_levels_count; ++i) | |
1257 | if (kbd_mode_levels[i] == state->mode_bit) | |
1258 | return i; | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | return -EINVAL; | |
1263 | } | |
1264 | ||
1265 | static int kbd_set_level(struct kbd_state *state, u8 level) | |
1266 | { | |
1267 | if (kbd_info.levels != 0) { | |
1268 | if (level != 0) | |
1269 | kbd_previous_level = level; | |
1270 | if (state->level == level) | |
1271 | return 0; | |
1272 | state->level = level; | |
1273 | if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF) | |
1274 | state->mode_bit = kbd_previous_mode_bit; | |
1275 | else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) { | |
1276 | kbd_previous_mode_bit = state->mode_bit; | |
1277 | state->mode_bit = KBD_MODE_BIT_OFF; | |
1278 | } | |
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) { | |
1283 | if (level != 0) | |
1284 | kbd_previous_level = level; | |
1285 | state->mode_bit = kbd_mode_levels[level]; | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | return -EINVAL; | |
1290 | } | |
1291 | ||
1292 | static int kbd_get_state(struct kbd_state *state) | |
1293 | { | |
9862b436 | 1294 | struct calling_interface_buffer buffer; |
6cff8d60 GM |
1295 | int ret; |
1296 | ||
eca39e7f | 1297 | dell_fill_request(&buffer, 0x1, 0, 0, 0); |
9862b436 ML |
1298 | ret = dell_send_request(&buffer, |
1299 | CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); | |
549b4930 ML |
1300 | if (ret) |
1301 | return ret; | |
6cff8d60 | 1302 | |
9862b436 | 1303 | state->mode_bit = ffs(buffer.output[1] & 0xFFFF); |
6cff8d60 GM |
1304 | if (state->mode_bit != 0) |
1305 | state->mode_bit--; | |
1306 | ||
9862b436 ML |
1307 | state->triggers = (buffer.output[1] >> 16) & 0xFF; |
1308 | state->timeout_value = (buffer.output[1] >> 24) & 0x3F; | |
1309 | state->timeout_unit = (buffer.output[1] >> 30) & 0x3; | |
1310 | state->als_setting = buffer.output[2] & 0xFF; | |
1311 | state->als_value = (buffer.output[2] >> 8) & 0xFF; | |
1312 | state->level = (buffer.output[2] >> 16) & 0xFF; | |
1313 | state->timeout_value_ac = (buffer.output[2] >> 24) & 0x3F; | |
1314 | state->timeout_unit_ac = (buffer.output[2] >> 30) & 0x3; | |
6cff8d60 | 1315 | |
6cff8d60 GM |
1316 | return ret; |
1317 | } | |
1318 | ||
1319 | static int kbd_set_state(struct kbd_state *state) | |
1320 | { | |
9862b436 | 1321 | struct calling_interface_buffer buffer; |
6cff8d60 | 1322 | int ret; |
549b4930 ML |
1323 | u32 input1; |
1324 | u32 input2; | |
1325 | ||
1326 | input1 = BIT(state->mode_bit) & 0xFFFF; | |
1327 | input1 |= (state->triggers & 0xFF) << 16; | |
1328 | input1 |= (state->timeout_value & 0x3F) << 24; | |
1329 | input1 |= (state->timeout_unit & 0x3) << 30; | |
1330 | input2 = state->als_setting & 0xFF; | |
1331 | input2 |= (state->level & 0xFF) << 16; | |
1332 | input2 |= (state->timeout_value_ac & 0x3F) << 24; | |
1333 | input2 |= (state->timeout_unit_ac & 0x3) << 30; | |
9862b436 ML |
1334 | dell_fill_request(&buffer, 0x2, input1, input2, 0); |
1335 | ret = dell_send_request(&buffer, | |
1336 | CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); | |
6cff8d60 | 1337 | |
549b4930 | 1338 | return ret; |
6cff8d60 GM |
1339 | } |
1340 | ||
1341 | static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old) | |
1342 | { | |
1343 | int ret; | |
1344 | ||
1345 | ret = kbd_set_state(state); | |
1346 | if (ret == 0) | |
1347 | return 0; | |
1348 | ||
1349 | /* | |
1350 | * When setting the new state fails,try to restore the previous one. | |
1351 | * This is needed on some machines where BIOS sets a default state when | |
1352 | * setting a new state fails. This default state could be all off. | |
1353 | */ | |
1354 | ||
1355 | if (kbd_set_state(old)) | |
1356 | pr_err("Setting old previous keyboard state failed\n"); | |
1357 | ||
1358 | return ret; | |
1359 | } | |
1360 | ||
1361 | static int kbd_set_token_bit(u8 bit) | |
1362 | { | |
9862b436 | 1363 | struct calling_interface_buffer buffer; |
63c4029b | 1364 | struct calling_interface_token *token; |
6cff8d60 GM |
1365 | int ret; |
1366 | ||
1367 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1368 | return -EINVAL; | |
1369 | ||
63c4029b MK |
1370 | token = dell_smbios_find_token(kbd_tokens[bit]); |
1371 | if (!token) | |
6cff8d60 GM |
1372 | return -EINVAL; |
1373 | ||
9862b436 ML |
1374 | dell_fill_request(&buffer, token->location, token->value, 0, 0); |
1375 | ret = dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); | |
6cff8d60 | 1376 | |
549b4930 | 1377 | return ret; |
6cff8d60 GM |
1378 | } |
1379 | ||
1380 | static int kbd_get_token_bit(u8 bit) | |
1381 | { | |
9862b436 | 1382 | struct calling_interface_buffer buffer; |
63c4029b | 1383 | struct calling_interface_token *token; |
6cff8d60 GM |
1384 | int ret; |
1385 | int val; | |
1386 | ||
1387 | if (bit >= ARRAY_SIZE(kbd_tokens)) | |
1388 | return -EINVAL; | |
1389 | ||
63c4029b MK |
1390 | token = dell_smbios_find_token(kbd_tokens[bit]); |
1391 | if (!token) | |
6cff8d60 GM |
1392 | return -EINVAL; |
1393 | ||
9862b436 ML |
1394 | dell_fill_request(&buffer, token->location, 0, 0, 0); |
1395 | ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_STD); | |
1396 | val = buffer.output[1]; | |
6cff8d60 GM |
1397 | |
1398 | if (ret) | |
549b4930 | 1399 | return ret; |
6cff8d60 | 1400 | |
63c4029b | 1401 | return (val == token->value); |
6cff8d60 GM |
1402 | } |
1403 | ||
1404 | static int kbd_get_first_active_token_bit(void) | |
1405 | { | |
1406 | int i; | |
1407 | int ret; | |
1408 | ||
1409 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) { | |
1410 | ret = kbd_get_token_bit(i); | |
1411 | if (ret == 1) | |
1412 | return i; | |
1413 | } | |
1414 | ||
1415 | return ret; | |
1416 | } | |
1417 | ||
1418 | static int kbd_get_valid_token_counts(void) | |
1419 | { | |
1420 | return hweight16(kbd_token_bits); | |
1421 | } | |
1422 | ||
1423 | static inline int kbd_init_info(void) | |
1424 | { | |
1425 | struct kbd_state state; | |
1426 | int ret; | |
1427 | int i; | |
1428 | ||
1429 | ret = kbd_get_info(&kbd_info); | |
1430 | if (ret) | |
1431 | return ret; | |
1432 | ||
9216e0dc PR |
1433 | /* NOTE: Old models without KBD_LED_AC_TOKEN token supports only one |
1434 | * timeout value which is shared for both battery and AC power | |
1435 | * settings. So do not try to set AC values on old models. | |
1436 | */ | |
e6a7379f TK |
1437 | if ((quirks && quirks->kbd_missing_ac_tag) || |
1438 | dell_smbios_find_token(KBD_LED_AC_TOKEN)) | |
9216e0dc PR |
1439 | kbd_timeout_ac_supported = true; |
1440 | ||
6cff8d60 GM |
1441 | kbd_get_state(&state); |
1442 | ||
1443 | /* NOTE: timeout value is stored in 6 bits so max value is 63 */ | |
1444 | if (kbd_info.seconds > 63) | |
1445 | kbd_info.seconds = 63; | |
1446 | if (kbd_info.minutes > 63) | |
1447 | kbd_info.minutes = 63; | |
1448 | if (kbd_info.hours > 63) | |
1449 | kbd_info.hours = 63; | |
1450 | if (kbd_info.days > 63) | |
1451 | kbd_info.days = 63; | |
1452 | ||
1453 | /* NOTE: On tested machines ON mode did not work and caused | |
1454 | * problems (turned backlight off) so do not use it | |
1455 | */ | |
1456 | kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON); | |
1457 | ||
1458 | kbd_previous_level = kbd_get_level(&state); | |
1459 | kbd_previous_mode_bit = state.mode_bit; | |
1460 | ||
1461 | if (kbd_previous_level == 0 && kbd_get_max_level() != 0) | |
1462 | kbd_previous_level = 1; | |
1463 | ||
1464 | if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) { | |
1465 | kbd_previous_mode_bit = | |
1466 | ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF)); | |
1467 | if (kbd_previous_mode_bit != 0) | |
1468 | kbd_previous_mode_bit--; | |
1469 | } | |
1470 | ||
1471 | if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) | | |
1472 | BIT(KBD_MODE_BIT_TRIGGER_ALS))) | |
1473 | kbd_als_supported = true; | |
1474 | ||
1475 | if (kbd_info.modes & ( | |
1476 | BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) | | |
1477 | BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) | | |
1478 | BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100) | |
1479 | )) | |
1480 | kbd_triggers_supported = true; | |
1481 | ||
1482 | /* kbd_mode_levels[0] is reserved, see below */ | |
1483 | for (i = 0; i < 16; ++i) | |
1484 | if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes)) | |
1485 | kbd_mode_levels[1 + kbd_mode_levels_count++] = i; | |
1486 | ||
1487 | /* | |
1488 | * Find the first supported mode and assign to kbd_mode_levels[0]. | |
1489 | * This should be 0 (off), but we cannot depend on the BIOS to | |
1490 | * support 0. | |
1491 | */ | |
1492 | if (kbd_mode_levels_count > 0) { | |
1493 | for (i = 0; i < 16; ++i) { | |
1494 | if (BIT(i) & kbd_info.modes) { | |
1495 | kbd_mode_levels[0] = i; | |
1496 | break; | |
1497 | } | |
1498 | } | |
1499 | kbd_mode_levels_count++; | |
1500 | } | |
1501 | ||
1502 | return 0; | |
1503 | ||
1504 | } | |
1505 | ||
1506 | static inline void kbd_init_tokens(void) | |
1507 | { | |
1508 | int i; | |
1509 | ||
1510 | for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) | |
63c4029b | 1511 | if (dell_smbios_find_token(kbd_tokens[i])) |
6cff8d60 GM |
1512 | kbd_token_bits |= BIT(i); |
1513 | } | |
1514 | ||
1515 | static void kbd_init(void) | |
1516 | { | |
1517 | int ret; | |
1518 | ||
10b65e29 PTG |
1519 | if (quirks && quirks->kbd_led_not_present) |
1520 | return; | |
1521 | ||
6cff8d60 GM |
1522 | ret = kbd_init_info(); |
1523 | kbd_init_tokens(); | |
1524 | ||
1b1ffc57 KHF |
1525 | /* |
1526 | * Only supports keyboard backlight when it has at least two modes. | |
1527 | */ | |
1528 | if ((ret == 0 && (kbd_info.levels != 0 || kbd_mode_levels_count >= 2)) | |
1529 | || kbd_get_valid_token_counts() >= 2) | |
6cff8d60 GM |
1530 | kbd_led_present = true; |
1531 | } | |
1532 | ||
1533 | static ssize_t kbd_led_timeout_store(struct device *dev, | |
1534 | struct device_attribute *attr, | |
1535 | const char *buf, size_t count) | |
1536 | { | |
1537 | struct kbd_state new_state; | |
1538 | struct kbd_state state; | |
1539 | bool convert; | |
1540 | int value; | |
1541 | int ret; | |
1542 | char ch; | |
1543 | u8 unit; | |
1544 | int i; | |
1545 | ||
1546 | ret = sscanf(buf, "%d %c", &value, &ch); | |
1547 | if (ret < 1) | |
1548 | return -EINVAL; | |
1549 | else if (ret == 1) | |
1550 | ch = 's'; | |
1551 | ||
1552 | if (value < 0) | |
1553 | return -EINVAL; | |
1554 | ||
1555 | convert = false; | |
1556 | ||
1557 | switch (ch) { | |
1558 | case 's': | |
1559 | if (value > kbd_info.seconds) | |
1560 | convert = true; | |
1561 | unit = KBD_TIMEOUT_SECONDS; | |
1562 | break; | |
1563 | case 'm': | |
1564 | if (value > kbd_info.minutes) | |
1565 | convert = true; | |
1566 | unit = KBD_TIMEOUT_MINUTES; | |
1567 | break; | |
1568 | case 'h': | |
1569 | if (value > kbd_info.hours) | |
1570 | convert = true; | |
1571 | unit = KBD_TIMEOUT_HOURS; | |
1572 | break; | |
1573 | case 'd': | |
1574 | if (value > kbd_info.days) | |
1575 | convert = true; | |
1576 | unit = KBD_TIMEOUT_DAYS; | |
1577 | break; | |
1578 | default: | |
1579 | return -EINVAL; | |
1580 | } | |
1581 | ||
1582 | if (quirks && quirks->needs_kbd_timeouts) | |
1583 | convert = true; | |
1584 | ||
1585 | if (convert) { | |
1586 | /* Convert value from current units to seconds */ | |
1587 | switch (unit) { | |
1588 | case KBD_TIMEOUT_DAYS: | |
1589 | value *= 24; | |
df561f66 | 1590 | fallthrough; |
6cff8d60 GM |
1591 | case KBD_TIMEOUT_HOURS: |
1592 | value *= 60; | |
df561f66 | 1593 | fallthrough; |
6cff8d60 GM |
1594 | case KBD_TIMEOUT_MINUTES: |
1595 | value *= 60; | |
1596 | unit = KBD_TIMEOUT_SECONDS; | |
1597 | } | |
1598 | ||
1599 | if (quirks && quirks->needs_kbd_timeouts) { | |
1600 | for (i = 0; quirks->kbd_timeouts[i] != -1; i++) { | |
1601 | if (value <= quirks->kbd_timeouts[i]) { | |
1602 | value = quirks->kbd_timeouts[i]; | |
1603 | break; | |
1604 | } | |
1605 | } | |
1606 | } | |
1607 | ||
1608 | if (value <= kbd_info.seconds && kbd_info.seconds) { | |
1609 | unit = KBD_TIMEOUT_SECONDS; | |
1610 | } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) { | |
1611 | value /= 60; | |
1612 | unit = KBD_TIMEOUT_MINUTES; | |
1613 | } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) { | |
1614 | value /= (60 * 60); | |
1615 | unit = KBD_TIMEOUT_HOURS; | |
1616 | } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) { | |
1617 | value /= (60 * 60 * 24); | |
1618 | unit = KBD_TIMEOUT_DAYS; | |
1619 | } else { | |
1620 | return -EINVAL; | |
1621 | } | |
1622 | } | |
1623 | ||
e5bf5df7 HG |
1624 | mutex_lock(&kbd_led_mutex); |
1625 | ||
6cff8d60 GM |
1626 | ret = kbd_get_state(&state); |
1627 | if (ret) | |
e5bf5df7 | 1628 | goto out; |
6cff8d60 GM |
1629 | |
1630 | new_state = state; | |
9216e0dc PR |
1631 | |
1632 | if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) { | |
1633 | new_state.timeout_value_ac = value; | |
1634 | new_state.timeout_unit_ac = unit; | |
1635 | } else { | |
1636 | new_state.timeout_value = value; | |
1637 | new_state.timeout_unit = unit; | |
1638 | } | |
6cff8d60 GM |
1639 | |
1640 | ret = kbd_set_state_safe(&new_state, &state); | |
1641 | if (ret) | |
e5bf5df7 | 1642 | goto out; |
6cff8d60 | 1643 | |
e5bf5df7 HG |
1644 | ret = count; |
1645 | out: | |
1646 | mutex_unlock(&kbd_led_mutex); | |
1647 | return ret; | |
6cff8d60 GM |
1648 | } |
1649 | ||
1650 | static ssize_t kbd_led_timeout_show(struct device *dev, | |
1651 | struct device_attribute *attr, char *buf) | |
1652 | { | |
1653 | struct kbd_state state; | |
9216e0dc | 1654 | int value; |
6cff8d60 GM |
1655 | int ret; |
1656 | int len; | |
9216e0dc | 1657 | u8 unit; |
6cff8d60 GM |
1658 | |
1659 | ret = kbd_get_state(&state); | |
1660 | if (ret) | |
1661 | return ret; | |
1662 | ||
9216e0dc PR |
1663 | if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) { |
1664 | value = state.timeout_value_ac; | |
1665 | unit = state.timeout_unit_ac; | |
1666 | } else { | |
1667 | value = state.timeout_value; | |
1668 | unit = state.timeout_unit; | |
1669 | } | |
1670 | ||
1671 | len = sprintf(buf, "%d", value); | |
6cff8d60 | 1672 | |
9216e0dc | 1673 | switch (unit) { |
6cff8d60 GM |
1674 | case KBD_TIMEOUT_SECONDS: |
1675 | return len + sprintf(buf+len, "s\n"); | |
1676 | case KBD_TIMEOUT_MINUTES: | |
1677 | return len + sprintf(buf+len, "m\n"); | |
1678 | case KBD_TIMEOUT_HOURS: | |
1679 | return len + sprintf(buf+len, "h\n"); | |
1680 | case KBD_TIMEOUT_DAYS: | |
1681 | return len + sprintf(buf+len, "d\n"); | |
1682 | default: | |
1683 | return -EINVAL; | |
1684 | } | |
1685 | ||
1686 | return len; | |
1687 | } | |
1688 | ||
1689 | static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR, | |
1690 | kbd_led_timeout_show, kbd_led_timeout_store); | |
1691 | ||
1692 | static const char * const kbd_led_triggers[] = { | |
1693 | "keyboard", | |
1694 | "touchpad", | |
1695 | /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */ | |
1696 | "mouse", | |
1697 | }; | |
1698 | ||
1699 | static ssize_t kbd_led_triggers_store(struct device *dev, | |
1700 | struct device_attribute *attr, | |
1701 | const char *buf, size_t count) | |
1702 | { | |
1703 | struct kbd_state new_state; | |
1704 | struct kbd_state state; | |
1705 | bool triggers_enabled = false; | |
1706 | int trigger_bit = -1; | |
1707 | char trigger[21]; | |
1708 | int i, ret; | |
1709 | ||
1710 | ret = sscanf(buf, "%20s", trigger); | |
1711 | if (ret != 1) | |
1712 | return -EINVAL; | |
1713 | ||
1714 | if (trigger[0] != '+' && trigger[0] != '-') | |
1715 | return -EINVAL; | |
1716 | ||
e5bf5df7 HG |
1717 | mutex_lock(&kbd_led_mutex); |
1718 | ||
6cff8d60 GM |
1719 | ret = kbd_get_state(&state); |
1720 | if (ret) | |
e5bf5df7 | 1721 | goto out; |
6cff8d60 GM |
1722 | |
1723 | if (kbd_triggers_supported) | |
1724 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1725 | ||
1726 | if (kbd_triggers_supported) { | |
1727 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1728 | if (!(kbd_info.triggers & BIT(i))) | |
1729 | continue; | |
1730 | if (!kbd_led_triggers[i]) | |
1731 | continue; | |
1732 | if (strcmp(trigger+1, kbd_led_triggers[i]) != 0) | |
1733 | continue; | |
1734 | if (trigger[0] == '+' && | |
e5bf5df7 HG |
1735 | triggers_enabled && (state.triggers & BIT(i))) { |
1736 | ret = count; | |
1737 | goto out; | |
1738 | } | |
6cff8d60 | 1739 | if (trigger[0] == '-' && |
e5bf5df7 HG |
1740 | (!triggers_enabled || !(state.triggers & BIT(i)))) { |
1741 | ret = count; | |
1742 | goto out; | |
1743 | } | |
6cff8d60 GM |
1744 | trigger_bit = i; |
1745 | break; | |
1746 | } | |
1747 | } | |
1748 | ||
e5bf5df7 HG |
1749 | if (trigger_bit == -1) { |
1750 | ret = -EINVAL; | |
1751 | goto out; | |
1752 | } | |
6cff8d60 | 1753 | |
1c7e2824 HG |
1754 | new_state = state; |
1755 | if (trigger[0] == '+') | |
1756 | new_state.triggers |= BIT(trigger_bit); | |
1757 | else { | |
1758 | new_state.triggers &= ~BIT(trigger_bit); | |
1759 | /* | |
1760 | * NOTE: trackstick bit (2) must be disabled when | |
1761 | * disabling touchpad bit (1), otherwise touchpad | |
1762 | * bit (1) will not be disabled | |
1763 | */ | |
1764 | if (trigger_bit == 1) | |
1765 | new_state.triggers &= ~BIT(2); | |
1766 | } | |
1767 | if ((kbd_info.triggers & new_state.triggers) != | |
e5bf5df7 HG |
1768 | new_state.triggers) { |
1769 | ret = -EINVAL; | |
1770 | goto out; | |
1771 | } | |
1c7e2824 HG |
1772 | if (new_state.triggers && !triggers_enabled) { |
1773 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1774 | kbd_set_level(&new_state, kbd_previous_level); | |
1775 | } else if (new_state.triggers == 0) { | |
1776 | kbd_set_level(&new_state, 0); | |
1777 | } | |
e5bf5df7 HG |
1778 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) { |
1779 | ret = -EINVAL; | |
1780 | goto out; | |
1781 | } | |
1c7e2824 HG |
1782 | ret = kbd_set_state_safe(&new_state, &state); |
1783 | if (ret) | |
e5bf5df7 | 1784 | goto out; |
1c7e2824 HG |
1785 | if (new_state.mode_bit != KBD_MODE_BIT_OFF) |
1786 | kbd_previous_mode_bit = new_state.mode_bit; | |
e5bf5df7 HG |
1787 | ret = count; |
1788 | out: | |
1789 | mutex_unlock(&kbd_led_mutex); | |
1790 | return ret; | |
6cff8d60 GM |
1791 | } |
1792 | ||
1793 | static ssize_t kbd_led_triggers_show(struct device *dev, | |
1794 | struct device_attribute *attr, char *buf) | |
1795 | { | |
1796 | struct kbd_state state; | |
1797 | bool triggers_enabled; | |
1798 | int level, i, ret; | |
1799 | int len = 0; | |
1800 | ||
1801 | ret = kbd_get_state(&state); | |
1802 | if (ret) | |
1803 | return ret; | |
1804 | ||
1805 | len = 0; | |
1806 | ||
1807 | if (kbd_triggers_supported) { | |
1808 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1809 | level = kbd_get_level(&state); | |
1810 | for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { | |
1811 | if (!(kbd_info.triggers & BIT(i))) | |
1812 | continue; | |
1813 | if (!kbd_led_triggers[i]) | |
1814 | continue; | |
1815 | if ((triggers_enabled || level <= 0) && | |
1816 | (state.triggers & BIT(i))) | |
1817 | buf[len++] = '+'; | |
1818 | else | |
1819 | buf[len++] = '-'; | |
1820 | len += sprintf(buf+len, "%s ", kbd_led_triggers[i]); | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | if (len) | |
1825 | buf[len - 1] = '\n'; | |
1826 | ||
1827 | return len; | |
1828 | } | |
1829 | ||
1830 | static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR, | |
1831 | kbd_led_triggers_show, kbd_led_triggers_store); | |
1832 | ||
1833 | static ssize_t kbd_led_als_enabled_store(struct device *dev, | |
1834 | struct device_attribute *attr, | |
1835 | const char *buf, size_t count) | |
1836 | { | |
1837 | struct kbd_state new_state; | |
1838 | struct kbd_state state; | |
1839 | bool triggers_enabled = false; | |
1840 | int enable; | |
1841 | int ret; | |
1842 | ||
1843 | ret = kstrtoint(buf, 0, &enable); | |
1844 | if (ret) | |
1845 | return ret; | |
1846 | ||
e5bf5df7 HG |
1847 | mutex_lock(&kbd_led_mutex); |
1848 | ||
6cff8d60 GM |
1849 | ret = kbd_get_state(&state); |
1850 | if (ret) | |
e5bf5df7 | 1851 | goto out; |
6cff8d60 | 1852 | |
e5bf5df7 HG |
1853 | if (enable == kbd_is_als_mode_bit(state.mode_bit)) { |
1854 | ret = count; | |
1855 | goto out; | |
1856 | } | |
6cff8d60 GM |
1857 | |
1858 | new_state = state; | |
1859 | ||
1860 | if (kbd_triggers_supported) | |
1861 | triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); | |
1862 | ||
1863 | if (enable) { | |
1864 | if (triggers_enabled) | |
1865 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS; | |
1866 | else | |
1867 | new_state.mode_bit = KBD_MODE_BIT_ALS; | |
1868 | } else { | |
1869 | if (triggers_enabled) { | |
1870 | new_state.mode_bit = KBD_MODE_BIT_TRIGGER; | |
1871 | kbd_set_level(&new_state, kbd_previous_level); | |
1872 | } else { | |
1873 | new_state.mode_bit = KBD_MODE_BIT_ON; | |
1874 | } | |
1875 | } | |
e5bf5df7 HG |
1876 | if (!(kbd_info.modes & BIT(new_state.mode_bit))) { |
1877 | ret = -EINVAL; | |
1878 | goto out; | |
1879 | } | |
6cff8d60 GM |
1880 | |
1881 | ret = kbd_set_state_safe(&new_state, &state); | |
1882 | if (ret) | |
e5bf5df7 | 1883 | goto out; |
6cff8d60 GM |
1884 | kbd_previous_mode_bit = new_state.mode_bit; |
1885 | ||
e5bf5df7 HG |
1886 | ret = count; |
1887 | out: | |
1888 | mutex_unlock(&kbd_led_mutex); | |
1889 | return ret; | |
6cff8d60 GM |
1890 | } |
1891 | ||
1892 | static ssize_t kbd_led_als_enabled_show(struct device *dev, | |
1893 | struct device_attribute *attr, | |
1894 | char *buf) | |
1895 | { | |
1896 | struct kbd_state state; | |
1897 | bool enabled = false; | |
1898 | int ret; | |
1899 | ||
1900 | ret = kbd_get_state(&state); | |
1901 | if (ret) | |
1902 | return ret; | |
1903 | enabled = kbd_is_als_mode_bit(state.mode_bit); | |
1904 | ||
1905 | return sprintf(buf, "%d\n", enabled ? 1 : 0); | |
1906 | } | |
1907 | ||
1908 | static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR, | |
1909 | kbd_led_als_enabled_show, kbd_led_als_enabled_store); | |
1910 | ||
1911 | static ssize_t kbd_led_als_setting_store(struct device *dev, | |
1912 | struct device_attribute *attr, | |
1913 | const char *buf, size_t count) | |
1914 | { | |
1915 | struct kbd_state state; | |
1916 | struct kbd_state new_state; | |
1917 | u8 setting; | |
1918 | int ret; | |
1919 | ||
1920 | ret = kstrtou8(buf, 10, &setting); | |
1921 | if (ret) | |
1922 | return ret; | |
1923 | ||
e5bf5df7 HG |
1924 | mutex_lock(&kbd_led_mutex); |
1925 | ||
6cff8d60 GM |
1926 | ret = kbd_get_state(&state); |
1927 | if (ret) | |
e5bf5df7 | 1928 | goto out; |
6cff8d60 GM |
1929 | |
1930 | new_state = state; | |
1931 | new_state.als_setting = setting; | |
1932 | ||
1933 | ret = kbd_set_state_safe(&new_state, &state); | |
1934 | if (ret) | |
e5bf5df7 | 1935 | goto out; |
6cff8d60 | 1936 | |
e5bf5df7 HG |
1937 | ret = count; |
1938 | out: | |
1939 | mutex_unlock(&kbd_led_mutex); | |
1940 | return ret; | |
6cff8d60 GM |
1941 | } |
1942 | ||
1943 | static ssize_t kbd_led_als_setting_show(struct device *dev, | |
1944 | struct device_attribute *attr, | |
1945 | char *buf) | |
1946 | { | |
1947 | struct kbd_state state; | |
1948 | int ret; | |
1949 | ||
1950 | ret = kbd_get_state(&state); | |
1951 | if (ret) | |
1952 | return ret; | |
1953 | ||
1954 | return sprintf(buf, "%d\n", state.als_setting); | |
1955 | } | |
1956 | ||
1957 | static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR, | |
1958 | kbd_led_als_setting_show, kbd_led_als_setting_store); | |
1959 | ||
1960 | static struct attribute *kbd_led_attrs[] = { | |
1961 | &dev_attr_stop_timeout.attr, | |
1962 | &dev_attr_start_triggers.attr, | |
1963 | NULL, | |
1964 | }; | |
1965 | ||
1966 | static const struct attribute_group kbd_led_group = { | |
1967 | .attrs = kbd_led_attrs, | |
1968 | }; | |
1969 | ||
1970 | static struct attribute *kbd_led_als_attrs[] = { | |
1971 | &dev_attr_als_enabled.attr, | |
1972 | &dev_attr_als_setting.attr, | |
1973 | NULL, | |
1974 | }; | |
1975 | ||
1976 | static const struct attribute_group kbd_led_als_group = { | |
1977 | .attrs = kbd_led_als_attrs, | |
1978 | }; | |
1979 | ||
1980 | static const struct attribute_group *kbd_led_groups[] = { | |
1981 | &kbd_led_group, | |
1982 | &kbd_led_als_group, | |
1983 | NULL, | |
1984 | }; | |
1985 | ||
1986 | static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev) | |
1987 | { | |
1988 | int ret; | |
1989 | u16 num; | |
1990 | struct kbd_state state; | |
1991 | ||
1992 | if (kbd_get_max_level()) { | |
1993 | ret = kbd_get_state(&state); | |
1994 | if (ret) | |
1995 | return 0; | |
1996 | ret = kbd_get_level(&state); | |
1997 | if (ret < 0) | |
1998 | return 0; | |
1999 | return ret; | |
2000 | } | |
2001 | ||
2002 | if (kbd_get_valid_token_counts()) { | |
2003 | ret = kbd_get_first_active_token_bit(); | |
2004 | if (ret < 0) | |
2005 | return 0; | |
2006 | for (num = kbd_token_bits; num != 0 && ret > 0; --ret) | |
2007 | num &= num - 1; /* clear the first bit set */ | |
2008 | if (num == 0) | |
2009 | return 0; | |
2010 | return ffs(num) - 1; | |
2011 | } | |
2012 | ||
2013 | pr_warn("Keyboard brightness level control not supported\n"); | |
2014 | return 0; | |
2015 | } | |
2016 | ||
1d161d4c HG |
2017 | static int kbd_led_level_set(struct led_classdev *led_cdev, |
2018 | enum led_brightness value) | |
6cff8d60 | 2019 | { |
4d6bde51 | 2020 | enum led_brightness new_value = value; |
6cff8d60 GM |
2021 | struct kbd_state state; |
2022 | struct kbd_state new_state; | |
2023 | u16 num; | |
1d161d4c | 2024 | int ret; |
6cff8d60 | 2025 | |
e5bf5df7 HG |
2026 | mutex_lock(&kbd_led_mutex); |
2027 | ||
6cff8d60 | 2028 | if (kbd_get_max_level()) { |
1d161d4c HG |
2029 | ret = kbd_get_state(&state); |
2030 | if (ret) | |
e5bf5df7 | 2031 | goto out; |
6cff8d60 | 2032 | new_state = state; |
1d161d4c HG |
2033 | ret = kbd_set_level(&new_state, value); |
2034 | if (ret) | |
e5bf5df7 HG |
2035 | goto out; |
2036 | ret = kbd_set_state_safe(&new_state, &state); | |
2037 | } else if (kbd_get_valid_token_counts()) { | |
6cff8d60 GM |
2038 | for (num = kbd_token_bits; num != 0 && value > 0; --value) |
2039 | num &= num - 1; /* clear the first bit set */ | |
2040 | if (num == 0) | |
e5bf5df7 HG |
2041 | ret = 0; |
2042 | else | |
2043 | ret = kbd_set_token_bit(ffs(num) - 1); | |
2044 | } else { | |
2045 | pr_warn("Keyboard brightness level control not supported\n"); | |
2046 | ret = -ENXIO; | |
6cff8d60 GM |
2047 | } |
2048 | ||
e5bf5df7 | 2049 | out: |
4d6bde51 HG |
2050 | if (ret == 0) |
2051 | kbd_led_level = new_value; | |
2052 | ||
e5bf5df7 HG |
2053 | mutex_unlock(&kbd_led_mutex); |
2054 | return ret; | |
6cff8d60 GM |
2055 | } |
2056 | ||
2057 | static struct led_classdev kbd_led = { | |
2058 | .name = "dell::kbd_backlight", | |
9c656b07 | 2059 | .flags = LED_BRIGHT_HW_CHANGED, |
1d161d4c | 2060 | .brightness_set_blocking = kbd_led_level_set, |
6cff8d60 GM |
2061 | .brightness_get = kbd_led_level_get, |
2062 | .groups = kbd_led_groups, | |
2063 | }; | |
2064 | ||
2065 | static int __init kbd_led_init(struct device *dev) | |
2066 | { | |
9c656b07 HG |
2067 | int ret; |
2068 | ||
6cff8d60 GM |
2069 | kbd_init(); |
2070 | if (!kbd_led_present) | |
2071 | return -ENODEV; | |
2072 | if (!kbd_als_supported) | |
2073 | kbd_led_groups[1] = NULL; | |
2074 | kbd_led.max_brightness = kbd_get_max_level(); | |
2075 | if (!kbd_led.max_brightness) { | |
2076 | kbd_led.max_brightness = kbd_get_valid_token_counts(); | |
2077 | if (kbd_led.max_brightness) | |
2078 | kbd_led.max_brightness--; | |
2079 | } | |
4d6bde51 HG |
2080 | |
2081 | kbd_led_level = kbd_led_level_get(NULL); | |
2082 | ||
9c656b07 HG |
2083 | ret = led_classdev_register(dev, &kbd_led); |
2084 | if (ret) | |
2085 | kbd_led_present = false; | |
2086 | ||
2087 | return ret; | |
6cff8d60 GM |
2088 | } |
2089 | ||
2090 | static void brightness_set_exit(struct led_classdev *led_cdev, | |
2091 | enum led_brightness value) | |
2092 | { | |
2093 | /* Don't change backlight level on exit */ | |
2094 | }; | |
2095 | ||
2096 | static void kbd_led_exit(void) | |
2097 | { | |
2098 | if (!kbd_led_present) | |
2099 | return; | |
2100 | kbd_led.brightness_set = brightness_set_exit; | |
2101 | led_classdev_unregister(&kbd_led); | |
2102 | } | |
2103 | ||
9c656b07 HG |
2104 | static int dell_laptop_notifier_call(struct notifier_block *nb, |
2105 | unsigned long action, void *data) | |
2106 | { | |
4d6bde51 HG |
2107 | bool changed = false; |
2108 | enum led_brightness new_kbd_led_level; | |
2109 | ||
9c656b07 HG |
2110 | switch (action) { |
2111 | case DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED: | |
2112 | if (!kbd_led_present) | |
2113 | break; | |
2114 | ||
4d6bde51 HG |
2115 | mutex_lock(&kbd_led_mutex); |
2116 | new_kbd_led_level = kbd_led_level_get(&kbd_led); | |
2117 | if (kbd_led_level != new_kbd_led_level) { | |
2118 | kbd_led_level = new_kbd_led_level; | |
2119 | changed = true; | |
2120 | } | |
2121 | mutex_unlock(&kbd_led_mutex); | |
2122 | ||
2123 | if (changed) | |
2124 | led_classdev_notify_brightness_hw_changed(&kbd_led, | |
2125 | kbd_led_level); | |
9c656b07 HG |
2126 | break; |
2127 | } | |
2128 | ||
2129 | return NOTIFY_OK; | |
2130 | } | |
2131 | ||
2132 | static struct notifier_block dell_laptop_notifier = { | |
2133 | .notifier_call = dell_laptop_notifier_call, | |
2134 | }; | |
2135 | ||
f783e128 TI |
2136 | static int micmute_led_set(struct led_classdev *led_cdev, |
2137 | enum led_brightness brightness) | |
44319ab7 | 2138 | { |
9862b436 | 2139 | struct calling_interface_buffer buffer; |
44319ab7 | 2140 | struct calling_interface_token *token; |
f783e128 | 2141 | int state = brightness != LED_OFF; |
44319ab7 MK |
2142 | |
2143 | if (state == 0) | |
2144 | token = dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE); | |
44319ab7 | 2145 | else |
f783e128 | 2146 | token = dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE); |
44319ab7 MK |
2147 | |
2148 | if (!token) | |
2149 | return -ENODEV; | |
2150 | ||
9862b436 ML |
2151 | dell_fill_request(&buffer, token->location, token->value, 0, 0); |
2152 | dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); | |
44319ab7 | 2153 | |
f783e128 | 2154 | return 0; |
44319ab7 | 2155 | } |
d00fa46e TI |
2156 | |
2157 | static struct led_classdev micmute_led_cdev = { | |
2158 | .name = "platform::micmute", | |
2159 | .max_brightness = 1, | |
2160 | .brightness_set_blocking = micmute_led_set, | |
2161 | .default_trigger = "audio-micmute", | |
2162 | }; | |
44319ab7 | 2163 | |
ad8f07cc MG |
2164 | static int __init dell_init(void) |
2165 | { | |
f951d6e6 | 2166 | struct calling_interface_token *token; |
ad8f07cc MG |
2167 | int max_intensity = 0; |
2168 | int ret; | |
2169 | ||
2170 | if (!dmi_check_system(dell_device_table)) | |
2171 | return -ENODEV; | |
2172 | ||
2d8b90be AK |
2173 | quirks = NULL; |
2174 | /* find if this machine support other functions */ | |
2175 | dmi_check_system(dell_quirks); | |
2176 | ||
ada3248a AJ |
2177 | ret = platform_driver_register(&platform_driver); |
2178 | if (ret) | |
2179 | goto fail_platform_driver; | |
2180 | platform_device = platform_device_alloc("dell-laptop", -1); | |
2181 | if (!platform_device) { | |
2182 | ret = -ENOMEM; | |
2183 | goto fail_platform_device1; | |
2184 | } | |
2185 | ret = platform_device_add(platform_device); | |
2186 | if (ret) | |
2187 | goto fail_platform_device2; | |
2188 | ||
4cc8a574 HG |
2189 | ret = dell_setup_rfkill(); |
2190 | ||
2191 | if (ret) { | |
2192 | pr_warn("Unable to setup rfkill\n"); | |
2193 | goto fail_rfkill; | |
2194 | } | |
2195 | ||
2d8b90be AK |
2196 | if (quirks && quirks->touchpad_led) |
2197 | touchpad_led_init(&platform_device->dev); | |
2198 | ||
6cff8d60 GM |
2199 | kbd_led_init(&platform_device->dev); |
2200 | ||
037accfa | 2201 | dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL); |
9ea18802 GKH |
2202 | debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL, |
2203 | &dell_debugfs_fops); | |
037accfa | 2204 | |
9c656b07 HG |
2205 | dell_laptop_register_notifier(&dell_laptop_notifier); |
2206 | ||
257e03a3 KK |
2207 | if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) && |
2208 | dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) { | |
2209 | micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); | |
2210 | ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev); | |
2211 | if (ret < 0) | |
2212 | goto fail_led; | |
2213 | } | |
d00fa46e | 2214 | |
ee4cfe28 | 2215 | if (acpi_video_get_backlight_type() != acpi_backlight_vendor) |
ad8f07cc | 2216 | return 0; |
ad8f07cc | 2217 | |
f951d6e6 MK |
2218 | token = dell_smbios_find_token(BRIGHTNESS_TOKEN); |
2219 | if (token) { | |
9862b436 ML |
2220 | struct calling_interface_buffer buffer; |
2221 | ||
2222 | dell_fill_request(&buffer, token->location, 0, 0, 0); | |
2223 | ret = dell_send_request(&buffer, | |
2224 | CLASS_TOKEN_READ, SELECT_TOKEN_AC); | |
2502e5a0 | 2225 | if (ret == 0) |
9862b436 | 2226 | max_intensity = buffer.output[3]; |
ad8f07cc MG |
2227 | } |
2228 | ||
2229 | if (max_intensity) { | |
a19a6ee6 MG |
2230 | struct backlight_properties props; |
2231 | memset(&props, 0, sizeof(struct backlight_properties)); | |
bb7ca747 | 2232 | props.type = BACKLIGHT_PLATFORM; |
a19a6ee6 MG |
2233 | props.max_brightness = max_intensity; |
2234 | dell_backlight_device = backlight_device_register("dell_backlight", | |
2235 | &platform_device->dev, | |
2236 | NULL, | |
2237 | &dell_ops, | |
2238 | &props); | |
ad8f07cc MG |
2239 | |
2240 | if (IS_ERR(dell_backlight_device)) { | |
2241 | ret = PTR_ERR(dell_backlight_device); | |
2242 | dell_backlight_device = NULL; | |
71e9dc73 | 2243 | goto fail_backlight; |
ad8f07cc MG |
2244 | } |
2245 | ||
ad8f07cc MG |
2246 | dell_backlight_device->props.brightness = |
2247 | dell_get_intensity(dell_backlight_device); | |
90a864b9 AY |
2248 | if (dell_backlight_device->props.brightness < 0) { |
2249 | ret = dell_backlight_device->props.brightness; | |
2250 | goto fail_get_brightness; | |
2251 | } | |
ad8f07cc MG |
2252 | backlight_update_status(dell_backlight_device); |
2253 | } | |
2254 | ||
2255 | return 0; | |
71e9dc73 | 2256 | |
90a864b9 AY |
2257 | fail_get_brightness: |
2258 | backlight_device_unregister(dell_backlight_device); | |
71e9dc73 | 2259 | fail_backlight: |
d00fa46e TI |
2260 | led_classdev_unregister(&micmute_led_cdev); |
2261 | fail_led: | |
4cc8a574 HG |
2262 | dell_cleanup_rfkill(); |
2263 | fail_rfkill: | |
ada3248a AJ |
2264 | platform_device_del(platform_device); |
2265 | fail_platform_device2: | |
2266 | platform_device_put(platform_device); | |
2267 | fail_platform_device1: | |
2268 | platform_driver_unregister(&platform_driver); | |
2269 | fail_platform_driver: | |
ad8f07cc MG |
2270 | return ret; |
2271 | } | |
2272 | ||
2273 | static void __exit dell_exit(void) | |
2274 | { | |
9c656b07 | 2275 | dell_laptop_unregister_notifier(&dell_laptop_notifier); |
037accfa | 2276 | debugfs_remove_recursive(dell_laptop_dir); |
2d8b90be AK |
2277 | if (quirks && quirks->touchpad_led) |
2278 | touchpad_led_exit(); | |
6cff8d60 | 2279 | kbd_led_exit(); |
ad8f07cc | 2280 | backlight_device_unregister(dell_backlight_device); |
d00fa46e | 2281 | led_classdev_unregister(&micmute_led_cdev); |
4cc8a574 | 2282 | dell_cleanup_rfkill(); |
facd61d7 | 2283 | if (platform_device) { |
92e00e47 | 2284 | platform_device_unregister(platform_device); |
facd61d7 MG |
2285 | platform_driver_unregister(&platform_driver); |
2286 | } | |
ad8f07cc MG |
2287 | } |
2288 | ||
f8358578 PR |
2289 | /* dell-rbtn.c driver export functions which will not work correctly (and could |
2290 | * cause kernel crash) if they are called before dell-rbtn.c init code. This is | |
2291 | * not problem when dell-rbtn.c is compiled as external module. When both files | |
2292 | * (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we | |
2293 | * need to ensure that dell_init() will be called after initializing dell-rbtn. | |
2294 | * This can be achieved by late_initcall() instead module_init(). | |
2295 | */ | |
2296 | late_initcall(dell_init); | |
ad8f07cc MG |
2297 | module_exit(dell_exit); |
2298 | ||
2299 | MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); | |
6cff8d60 | 2300 | MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>"); |
149ed3d4 | 2301 | MODULE_AUTHOR("Pali Rohár <pali@kernel.org>"); |
ad8f07cc MG |
2302 | MODULE_DESCRIPTION("Dell laptop driver"); |
2303 | MODULE_LICENSE("GPL"); |