1 /*-
2 * Copyright (c) 2004 Takanori Watanabe
3 * Copyright (c) 2005 Markus Brueffer <markus@FreeBSD.org>
4 * All rights reserved.
5 * Copyright (c) 2020 Ali Abdallah <ali.abdallah@suse.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 /*
31 * Driver for extra ACPI-controlled gadgets found on ThinkPad laptops.
32 * Inspired by the ibm-acpi and tpb projects which implement these features
33 * on Linux.
34 *
35 * acpi-ibm: <http://ibm-acpi.sourceforge.net/>
36 * tpb: <http://www.nongnu.org/tpb/>
37 */
38
39 #include "opt_acpi.h"
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kernel.h>
43 #include <sys/bus.h>
44 #include <machine/cpufunc.h>
45
46 #include <contrib/dev/acpica/include/acpi.h>
47 #include <contrib/dev/acpica/include/accommon.h>
48
49 #include "acpi_if.h"
50 #include <sys/module.h>
51 #include <dev/acpica/acpivar.h>
52 #include <dev/led/led.h>
53 #include <sys/power.h>
54 #include <sys/sbuf.h>
55 #include <sys/sysctl.h>
56 #include <isa/rtc.h>
57
58 #define _COMPONENT ACPI_OEM
59 ACPI_MODULE_NAME("IBM")
60
61 /* Internal methods */
62 #define ACPI_IBM_METHOD_EVENTS 1
63 #define ACPI_IBM_METHOD_EVENTMASK 2
64 #define ACPI_IBM_METHOD_HOTKEY 3
65 #define ACPI_IBM_METHOD_BRIGHTNESS 4
66 #define ACPI_IBM_METHOD_VOLUME 5
67 #define ACPI_IBM_METHOD_MUTE 6
68 #define ACPI_IBM_METHOD_THINKLIGHT 7
69 #define ACPI_IBM_METHOD_BLUETOOTH 8
70 #define ACPI_IBM_METHOD_WLAN 9
71 #define ACPI_IBM_METHOD_FANSPEED 10
72 #define ACPI_IBM_METHOD_FANLEVEL 11
73 #define ACPI_IBM_METHOD_FANSTATUS 12
74 #define ACPI_IBM_METHOD_THERMAL 13
75 #define ACPI_IBM_METHOD_HANDLEREVENTS 14
76 #define ACPI_IBM_METHOD_MIC_LED 15
77 #define ACPI_IBM_METHOD_PRIVACYGUARD 16
78
79 /* Hotkeys/Buttons */
80 #define IBM_RTC_HOTKEY1 0x64
81 #define IBM_RTC_MASK_HOME (1 << 0)
82 #define IBM_RTC_MASK_SEARCH (1 << 1)
83 #define IBM_RTC_MASK_MAIL (1 << 2)
84 #define IBM_RTC_MASK_WLAN (1 << 5)
85 #define IBM_RTC_HOTKEY2 0x65
86 #define IBM_RTC_MASK_THINKPAD (1 << 3)
87 #define IBM_RTC_MASK_ZOOM (1 << 5)
88 #define IBM_RTC_MASK_VIDEO (1 << 6)
89 #define IBM_RTC_MASK_HIBERNATE (1 << 7)
90 #define IBM_RTC_THINKLIGHT 0x66
91 #define IBM_RTC_MASK_THINKLIGHT (1 << 4)
92 #define IBM_RTC_SCREENEXPAND 0x67
93 #define IBM_RTC_MASK_SCREENEXPAND (1 << 5)
94 #define IBM_RTC_BRIGHTNESS 0x6c
95 #define IBM_RTC_MASK_BRIGHTNESS (1 << 5)
96 #define IBM_RTC_VOLUME 0x6e
97 #define IBM_RTC_MASK_VOLUME (1 << 7)
98
99 /* Embedded Controller registers */
100 #define IBM_EC_BRIGHTNESS 0x31
101 #define IBM_EC_MASK_BRI 0x7
102 #define IBM_EC_VOLUME 0x30
103 #define IBM_EC_MASK_VOL 0xf
104 #define IBM_EC_MASK_MUTE (1 << 6)
105 #define IBM_EC_FANSTATUS 0x2F
106 #define IBM_EC_MASK_FANLEVEL 0x3f
107 #define IBM_EC_MASK_FANUNTHROTTLED (1 << 6)
108 #define IBM_EC_MASK_FANSTATUS (1 << 7)
109 #define IBM_EC_FANSPEED 0x84
110
111 /* CMOS Commands */
112 #define IBM_CMOS_VOLUME_DOWN 0
113 #define IBM_CMOS_VOLUME_UP 1
114 #define IBM_CMOS_VOLUME_MUTE 2
115 #define IBM_CMOS_BRIGHTNESS_UP 4
116 #define IBM_CMOS_BRIGHTNESS_DOWN 5
117
118 /* ACPI methods */
119 #define IBM_NAME_KEYLIGHT "KBLT"
120 #define IBM_NAME_WLAN_BT_GET "GBDC"
121 #define IBM_NAME_WLAN_BT_SET "SBDC"
122 #define IBM_NAME_MASK_BT (1 << 1)
123 #define IBM_NAME_MASK_WLAN (1 << 2)
124 #define IBM_NAME_THERMAL_GET "TMP7"
125 #define IBM_NAME_THERMAL_UPDT "UPDT"
126 #define IBM_NAME_PRIVACYGUARD_GET "GSSS"
127 #define IBM_NAME_PRIVACYGUARD_SET "SSSS"
128
129 #define IBM_NAME_EVENTS_STATUS_GET "DHKC"
130 #define IBM_NAME_EVENTS_MASK_GET "DHKN"
131 #define IBM_NAME_EVENTS_STATUS_SET "MHKC"
132 #define IBM_NAME_EVENTS_MASK_SET "MHKM"
133 #define IBM_NAME_EVENTS_GET "MHKP"
134 #define IBM_NAME_EVENTS_AVAILMASK "MHKA"
135
136 /* Event Code */
137 #define IBM_EVENT_LCD_BACKLIGHT 0x03
138 #define IBM_EVENT_SUSPEND_TO_RAM 0x04
139 #define IBM_EVENT_BLUETOOTH 0x05
140 #define IBM_EVENT_SCREEN_EXPAND 0x07
141 #define IBM_EVENT_SUSPEND_TO_DISK 0x0c
142 #define IBM_EVENT_BRIGHTNESS_UP 0x10
143 #define IBM_EVENT_BRIGHTNESS_DOWN 0x11
144 #define IBM_EVENT_THINKLIGHT 0x12
145 #define IBM_EVENT_ZOOM 0x14
146 #define IBM_EVENT_VOLUME_UP 0x15
147 #define IBM_EVENT_VOLUME_DOWN 0x16
148 #define IBM_EVENT_MUTE 0x17
149 #define IBM_EVENT_ACCESS_IBM_BUTTON 0x18
150
151 /* Device-specific register flags */
152 #define IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT 0x10000
153 #define IBM_FLAG_PRIVACYGUARD_ON 0x1
154
155 #define ABS(x) (((x) < 0)? -(x) : (x))
156
157 struct acpi_ibm_softc {
158 device_t dev;
159 ACPI_HANDLE handle;
160
161 /* Embedded controller */
162 device_t ec_dev;
163 ACPI_HANDLE ec_handle;
164
165 /* CMOS */
166 ACPI_HANDLE cmos_handle;
167
168 /* Fan status */
169 ACPI_HANDLE fan_handle;
170 int fan_levels;
171
172 /* Keylight commands and states */
173 ACPI_HANDLE light_handle;
174 int light_cmd_on;
175 int light_cmd_off;
176 int light_val;
177 int light_get_supported;
178 int light_set_supported;
179
180 /* led(4) interface */
181 struct cdev *led_dev;
182 int led_busy;
183 int led_state;
184
185 /* Mic led handle */
186 ACPI_HANDLE mic_led_handle;
187 int mic_led_state;
188
189 int wlan_bt_flags;
190 int thermal_updt_supported;
191
192 unsigned int events_availmask;
193 unsigned int events_initialmask;
194 int events_mask_supported;
195 int events_enable;
196
197 unsigned int handler_events;
198
199 struct sysctl_ctx_list *sysctl_ctx;
200 struct sysctl_oid *sysctl_tree;
201 };
202
203 static struct {
204 char *name;
205 int method;
206 char *description;
207 int flag_rdonly;
208 } acpi_ibm_sysctls[] = {
209 {
210 .name = "events",
211 .method = ACPI_IBM_METHOD_EVENTS,
212 .description = "ACPI events enable",
213 },
214 {
215 .name = "eventmask",
216 .method = ACPI_IBM_METHOD_EVENTMASK,
217 .description = "ACPI eventmask",
218 },
219 {
220 .name = "hotkey",
221 .method = ACPI_IBM_METHOD_HOTKEY,
222 .description = "Key Status",
223 .flag_rdonly = 1
224 },
225 {
226 .name = "lcd_brightness",
227 .method = ACPI_IBM_METHOD_BRIGHTNESS,
228 .description = "LCD Brightness",
229 },
230 {
231 .name = "volume",
232 .method = ACPI_IBM_METHOD_VOLUME,
233 .description = "Volume",
234 },
235 {
236 .name = "mute",
237 .method = ACPI_IBM_METHOD_MUTE,
238 .description = "Mute",
239 },
240 {
241 .name = "thinklight",
242 .method = ACPI_IBM_METHOD_THINKLIGHT,
243 .description = "Thinklight enable",
244 },
245 {
246 .name = "bluetooth",
247 .method = ACPI_IBM_METHOD_BLUETOOTH,
248 .description = "Bluetooth enable",
249 },
250 {
251 .name = "wlan",
252 .method = ACPI_IBM_METHOD_WLAN,
253 .description = "WLAN enable",
254 .flag_rdonly = 1
255 },
256 {
257 .name = "fan_speed",
258 .method = ACPI_IBM_METHOD_FANSPEED,
259 .description = "Fan speed",
260 .flag_rdonly = 1
261 },
262 {
263 .name = "fan_level",
264 .method = ACPI_IBM_METHOD_FANLEVEL,
265 .description = "Fan level, 0-7 (recommended max), "
266 "8 (unthrottled, full-speed)",
267 },
268 {
269 .name = "fan",
270 .method = ACPI_IBM_METHOD_FANSTATUS,
271 .description = "Fan enable",
272 },
273 {
274 .name = "mic_led",
275 .method = ACPI_IBM_METHOD_MIC_LED,
276 .description = "Mic led",
277 },
278 {
279 .name = "privacyguard",
280 .method = ACPI_IBM_METHOD_PRIVACYGUARD,
281 .description = "PrivacyGuard enable",
282 },
283 { NULL, 0, NULL, 0 }
284 };
285
286 /*
287 * Per-model default list of event mask.
288 */
289 #define ACPI_IBM_HKEY_RFKILL_MASK (1 << 4)
290 #define ACPI_IBM_HKEY_DSWITCH_MASK (1 << 6)
291 #define ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK (1 << 15)
292 #define ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK (1 << 16)
293 #define ACPI_IBM_HKEY_SEARCH_MASK (1 << 18)
294 #define ACPI_IBM_HKEY_MICMUTE_MASK (1 << 26)
295 #define ACPI_IBM_HKEY_SETTINGS_MASK (1 << 28)
296 #define ACPI_IBM_HKEY_VIEWOPEN_MASK (1 << 30)
297 #define ACPI_IBM_HKEY_VIEWALL_MASK (1 << 31)
298
299 struct acpi_ibm_models {
300 const char *maker;
301 const char *product;
302 uint32_t eventmask;
303 } acpi_ibm_models[] = {
304 { "LENOVO", "20BSCTO1WW",
305 ACPI_IBM_HKEY_RFKILL_MASK |
306 ACPI_IBM_HKEY_DSWITCH_MASK |
307 ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK |
308 ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK |
309 ACPI_IBM_HKEY_SEARCH_MASK |
310 ACPI_IBM_HKEY_MICMUTE_MASK |
311 ACPI_IBM_HKEY_SETTINGS_MASK |
312 ACPI_IBM_HKEY_VIEWOPEN_MASK |
313 ACPI_IBM_HKEY_VIEWALL_MASK
314 }
315 };
316
317 ACPI_SERIAL_DECL(ibm, "ThinkPad ACPI Extras");
318
319 static int acpi_ibm_probe(device_t dev);
320 static int acpi_ibm_attach(device_t dev);
321 static int acpi_ibm_detach(device_t dev);
322 static int acpi_ibm_resume(device_t dev);
323
324 static void ibm_led(void *softc, int onoff);
325 static void ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
326
327 static int acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS);
328 static int acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method);
329 static int acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method);
330 static int acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int val);
331
332 static int acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val);
333 static int acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS);
334 static int acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS);
335 static void acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context);
336
337 static int acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg);
338 static int acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg);
339 static int acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg);
340 static int acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg);
341 static int acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg);
342 static int acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc);
343 static ACPI_STATUS acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg);
344 static ACPI_STATUS acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg);
345
346 static int acpi_status_to_errno(ACPI_STATUS status);
347
348 static device_method_t acpi_ibm_methods[] = {
349 /* Device interface */
350 DEVMETHOD(device_probe, acpi_ibm_probe),
351 DEVMETHOD(device_attach, acpi_ibm_attach),
352 DEVMETHOD(device_detach, acpi_ibm_detach),
353 DEVMETHOD(device_resume, acpi_ibm_resume),
354
355 DEVMETHOD_END
356 };
357
358 static driver_t acpi_ibm_driver = {
359 "acpi_ibm",
360 acpi_ibm_methods,
361 sizeof(struct acpi_ibm_softc),
362 };
363
364 DRIVER_MODULE(acpi_ibm, acpi, acpi_ibm_driver, 0, 0);
365 MODULE_DEPEND(acpi_ibm, acpi, 1, 1, 1);
366 static char *ibm_ids[] = {"IBM0068", "LEN0068", "LEN0268", NULL};
367
368 static int
acpi_status_to_errno(ACPI_STATUS status)369 acpi_status_to_errno(ACPI_STATUS status)
370 {
371 switch (status) {
372 case AE_OK:
373 return (0);
374 case AE_BAD_PARAMETER:
375 return (EINVAL);
376 default:
377 return (ENODEV);
378 }
379 }
380
381 static void
ibm_led(void * softc,int onoff)382 ibm_led(void *softc, int onoff)
383 {
384 struct acpi_ibm_softc *sc = softc;
385
386 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
387
388 if (sc->led_busy)
389 return;
390
391 sc->led_busy = 1;
392 sc->led_state = onoff;
393
394 AcpiOsExecute(OSL_NOTIFY_HANDLER, (void *)ibm_led_task, sc);
395 }
396
397 static void
ibm_led_task(struct acpi_ibm_softc * sc,int pending __unused)398 ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused)
399 {
400 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
401
402 ACPI_SERIAL_BEGIN(ibm);
403 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_THINKLIGHT, sc->led_state);
404 ACPI_SERIAL_END(ibm);
405
406 sc->led_busy = 0;
407 }
408
409 static int
acpi_ibm_mic_led_set(struct acpi_ibm_softc * sc,int arg)410 acpi_ibm_mic_led_set(struct acpi_ibm_softc *sc, int arg)
411 {
412 ACPI_OBJECT_LIST input;
413 ACPI_OBJECT params[1];
414 ACPI_STATUS status;
415
416 if (arg < 0 || arg > 1)
417 return (EINVAL);
418
419 if (sc->mic_led_handle) {
420 params[0].Type = ACPI_TYPE_INTEGER;
421 params[0].Integer.Value = 0;
422 /* mic led: 0 off, 2 on */
423 if (arg == 1)
424 params[0].Integer.Value = 2;
425
426 input.Pointer = params;
427 input.Count = 1;
428
429 status = AcpiEvaluateObject(sc->handle, "MMTS", &input, NULL);
430 if (ACPI_SUCCESS(status))
431 sc->mic_led_state = arg;
432 return (status);
433 }
434
435 return (0);
436 }
437
438 static int
acpi_ibm_probe(device_t dev)439 acpi_ibm_probe(device_t dev)
440 {
441 int rv;
442
443 if (acpi_disabled("ibm") || device_get_unit(dev) != 0)
444 return (ENXIO);
445 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids, NULL);
446
447 if (rv <= 0)
448 device_set_desc(dev, "ThinkPad ACPI Extras");
449
450 return (rv);
451 }
452
453 static int
acpi_ibm_attach(device_t dev)454 acpi_ibm_attach(device_t dev)
455 {
456 int i;
457 int hkey;
458 struct acpi_ibm_softc *sc;
459 char *maker, *product;
460 ACPI_OBJECT_LIST input;
461 ACPI_OBJECT params[1];
462 ACPI_OBJECT out_obj;
463 ACPI_BUFFER result;
464 devclass_t ec_devclass;
465
466 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
467
468 sc = device_get_softc(dev);
469 sc->dev = dev;
470 sc->handle = acpi_get_handle(dev);
471
472 /* Look for the first embedded controller */
473 if (!(ec_devclass = devclass_find ("acpi_ec"))) {
474 if (bootverbose)
475 device_printf(dev, "Couldn't find acpi_ec devclass\n");
476 return (EINVAL);
477 }
478 if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
479 if (bootverbose)
480 device_printf(dev, "Couldn't find acpi_ec device\n");
481 return (EINVAL);
482 }
483 sc->ec_handle = acpi_get_handle(sc->ec_dev);
484
485 /* Get the sysctl tree */
486 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
487 sc->sysctl_tree = device_get_sysctl_tree(dev);
488
489 /* Look for event mask and hook up the nodes */
490 sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
491 IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
492
493 if (sc->events_mask_supported) {
494 SYSCTL_ADD_UINT(sc->sysctl_ctx,
495 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "initialmask",
496 CTLFLAG_RD, &sc->events_initialmask, 0,
497 "Initial eventmask");
498
499 if (ACPI_SUCCESS (acpi_GetInteger(sc->handle, "MHKV", &hkey))) {
500 device_printf(dev, "Firmware version is 0x%X\n", hkey);
501 switch (hkey >> 8) {
502 case 1:
503 /* The availmask is the bitmask of supported events */
504 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
505 IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
506 sc->events_availmask = 0xffffffff;
507 break;
508
509 case 2:
510 result.Length = sizeof(out_obj);
511 result.Pointer = &out_obj;
512 params[0].Type = ACPI_TYPE_INTEGER;
513 params[0].Integer.Value = 1;
514 input.Pointer = params;
515 input.Count = 1;
516
517 sc->events_availmask = 0xffffffff;
518
519 if (ACPI_SUCCESS(AcpiEvaluateObject (sc->handle,
520 IBM_NAME_EVENTS_AVAILMASK, &input, &result)))
521 sc->events_availmask = out_obj.Integer.Value;
522 break;
523 default:
524 device_printf(dev, "Unknown firmware version 0x%x\n", hkey);
525 break;
526 }
527 } else
528 sc->events_availmask = 0xffffffff;
529
530 SYSCTL_ADD_UINT(sc->sysctl_ctx,
531 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
532 "availmask", CTLFLAG_RD,
533 &sc->events_availmask, 0, "Mask of supported events");
534 }
535
536 /* Hook up proc nodes */
537 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
538 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
539 continue;
540
541 if (acpi_ibm_sysctls[i].flag_rdonly != 0) {
542 SYSCTL_ADD_PROC(sc->sysctl_ctx,
543 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
544 acpi_ibm_sysctls[i].name,
545 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
546 sc, i, acpi_ibm_sysctl, "I",
547 acpi_ibm_sysctls[i].description);
548 } else {
549 SYSCTL_ADD_PROC(sc->sysctl_ctx,
550 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
551 acpi_ibm_sysctls[i].name,
552 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
553 sc, i, acpi_ibm_sysctl, "I",
554 acpi_ibm_sysctls[i].description);
555 }
556 }
557
558 /* Hook up thermal node */
559 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
560 SYSCTL_ADD_PROC(sc->sysctl_ctx,
561 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "thermal",
562 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0,
563 acpi_ibm_thermal_sysctl, "I", "Thermal zones");
564 }
565
566 /* Hook up handlerevents node */
567 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_HANDLEREVENTS)) {
568 SYSCTL_ADD_PROC(sc->sysctl_ctx,
569 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "handlerevents",
570 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0,
571 acpi_ibm_handlerevents_sysctl, "I",
572 "devd(8) events handled by acpi_ibm");
573 }
574
575 /* Handle notifies */
576 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
577 acpi_ibm_notify, dev);
578
579 /* Hook up light to led(4) */
580 if (sc->light_set_supported)
581 sc->led_dev = led_create_state(ibm_led, sc, "thinklight",
582 (sc->light_val ? 1 : 0));
583
584 /* Enable per-model events. */
585 maker = kern_getenv("smbios.system.maker");
586 product = kern_getenv("smbios.system.product");
587 if (maker == NULL || product == NULL)
588 goto nosmbios;
589
590 for (i = 0; i < nitems(acpi_ibm_models); i++) {
591 if (strcmp(maker, acpi_ibm_models[i].maker) == 0 &&
592 strcmp(product, acpi_ibm_models[i].product) == 0) {
593 ACPI_SERIAL_BEGIN(ibm);
594 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK,
595 acpi_ibm_models[i].eventmask);
596 ACPI_SERIAL_END(ibm);
597 }
598 }
599
600 nosmbios:
601 freeenv(maker);
602 freeenv(product);
603
604 /* Enable events by default. */
605 ACPI_SERIAL_BEGIN(ibm);
606 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
607 ACPI_SERIAL_END(ibm);
608
609 return (0);
610 }
611
612 static int
acpi_ibm_detach(device_t dev)613 acpi_ibm_detach(device_t dev)
614 {
615 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
616
617 struct acpi_ibm_softc *sc = device_get_softc(dev);
618
619 /* Disable events and restore eventmask */
620 ACPI_SERIAL_BEGIN(ibm);
621 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
622 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
623 ACPI_SERIAL_END(ibm);
624
625 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
626
627 if (sc->led_dev != NULL)
628 led_destroy(sc->led_dev);
629
630 return (0);
631 }
632
633 static int
acpi_ibm_resume(device_t dev)634 acpi_ibm_resume(device_t dev)
635 {
636 struct acpi_ibm_softc *sc = device_get_softc(dev);
637
638 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
639
640 ACPI_SERIAL_BEGIN(ibm);
641 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
642 int val;
643
644 val = acpi_ibm_sysctl_get(sc, i);
645
646 if (acpi_ibm_sysctls[i].flag_rdonly != 0)
647 continue;
648
649 acpi_ibm_sysctl_set(sc, i, val);
650 }
651 ACPI_SERIAL_END(ibm);
652
653 /* The mic led does not turn back on when sysctl_set is called in the above loop */
654 acpi_ibm_mic_led_set(sc, sc->mic_led_state);
655
656 return (0);
657 }
658
659 static int
acpi_ibm_eventmask_set(struct acpi_ibm_softc * sc,int val)660 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
661 {
662 ACPI_OBJECT arg[2];
663 ACPI_OBJECT_LIST args;
664 ACPI_STATUS status;
665
666 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
667 ACPI_SERIAL_ASSERT(ibm);
668
669 args.Count = 2;
670 args.Pointer = arg;
671 arg[0].Type = ACPI_TYPE_INTEGER;
672 arg[1].Type = ACPI_TYPE_INTEGER;
673
674 for (int i = 0; i < 32; ++i) {
675 arg[0].Integer.Value = i + 1;
676 arg[1].Integer.Value = (((1 << i) & val) != 0);
677 status = AcpiEvaluateObject(sc->handle,
678 IBM_NAME_EVENTS_MASK_SET, &args, NULL);
679
680 if (ACPI_FAILURE(status))
681 return (status);
682 }
683
684 return (0);
685 }
686
687 static int
acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)688 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
689 {
690 struct acpi_ibm_softc *sc;
691 int arg;
692 int error = 0;
693 int function;
694 int method;
695
696 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
697
698 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
699 function = oidp->oid_arg2;
700 method = acpi_ibm_sysctls[function].method;
701
702 ACPI_SERIAL_BEGIN(ibm);
703 arg = acpi_ibm_sysctl_get(sc, method);
704 error = sysctl_handle_int(oidp, &arg, 0, req);
705
706 /* Sanity check */
707 if (error != 0 || req->newptr == NULL)
708 goto out;
709
710 /* Update */
711 error = acpi_ibm_sysctl_set(sc, method, arg);
712
713 out:
714 ACPI_SERIAL_END(ibm);
715 return (error);
716 }
717
718 static int
acpi_ibm_sysctl_get(struct acpi_ibm_softc * sc,int method)719 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
720 {
721 UINT64 val_ec;
722 int val = 0, key;
723
724 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
725 ACPI_SERIAL_ASSERT(ibm);
726
727 switch (method) {
728 case ACPI_IBM_METHOD_EVENTS:
729 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
730 break;
731
732 case ACPI_IBM_METHOD_EVENTMASK:
733 if (sc->events_mask_supported)
734 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
735 break;
736
737 case ACPI_IBM_METHOD_HOTKEY:
738 /*
739 * Construct the hotkey as a bitmask as illustrated below.
740 * Note that whenever a key was pressed, the respecting bit
741 * toggles and nothing else changes.
742 * +--+--+-+-+-+-+-+-+-+-+-+-+
743 * |11|10|9|8|7|6|5|4|3|2|1|0|
744 * +--+--+-+-+-+-+-+-+-+-+-+-+
745 * | | | | | | | | | | | |
746 * | | | | | | | | | | | +- Home Button
747 * | | | | | | | | | | +--- Search Button
748 * | | | | | | | | | +----- Mail Button
749 * | | | | | | | | +------- Thinkpad Button
750 * | | | | | | | +--------- Zoom (Fn + Space)
751 * | | | | | | +----------- WLAN Button
752 * | | | | | +------------- Video Button
753 * | | | | +--------------- Hibernate Button
754 * | | | +----------------- Thinklight Button
755 * | | +------------------- Screen expand (Fn + F8)
756 * | +--------------------- Brightness
757 * +------------------------ Volume/Mute
758 */
759 key = rtcin(IBM_RTC_HOTKEY1);
760 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
761 key = rtcin(IBM_RTC_HOTKEY2);
762 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
763 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
764 key = rtcin(IBM_RTC_THINKLIGHT);
765 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
766 key = rtcin(IBM_RTC_SCREENEXPAND);
767 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
768 key = rtcin(IBM_RTC_BRIGHTNESS);
769 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
770 key = rtcin(IBM_RTC_VOLUME);
771 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
772 break;
773
774 case ACPI_IBM_METHOD_BRIGHTNESS:
775 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
776 val = val_ec & IBM_EC_MASK_BRI;
777 break;
778
779 case ACPI_IBM_METHOD_VOLUME:
780 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
781 val = val_ec & IBM_EC_MASK_VOL;
782 break;
783
784 case ACPI_IBM_METHOD_MUTE:
785 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
786 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
787 break;
788
789 case ACPI_IBM_METHOD_THINKLIGHT:
790 if (sc->light_get_supported)
791 acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
792 else
793 val = sc->light_val;
794 break;
795
796 case ACPI_IBM_METHOD_BLUETOOTH:
797 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
798 sc->wlan_bt_flags = val;
799 val = ((val & IBM_NAME_MASK_BT) != 0);
800 break;
801
802 case ACPI_IBM_METHOD_WLAN:
803 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
804 sc->wlan_bt_flags = val;
805 val = ((val & IBM_NAME_MASK_WLAN) != 0);
806 break;
807
808 case ACPI_IBM_METHOD_FANSPEED:
809 if (sc->fan_handle) {
810 if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
811 val = -1;
812 } else {
813 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
814 val = val_ec;
815 }
816 break;
817
818 case ACPI_IBM_METHOD_FANLEVEL:
819 /*
820 * The IBM_EC_FANSTATUS register works as follows:
821 * Bit 0-5 indicate the level at which the fan operates. Only
822 * values between 0 and 7 have an effect. Everything
823 * above 7 is treated the same as level 7
824 * Bit 6 overrides the fan speed limit if set to 1
825 * Bit 7 indicates at which mode the fan operates:
826 * manual (0) or automatic (1)
827 */
828 if (!sc->fan_handle) {
829 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
830 if (val_ec & IBM_EC_MASK_FANUNTHROTTLED)
831 val = 8;
832 else
833 val = val_ec & IBM_EC_MASK_FANLEVEL;
834 }
835 break;
836
837 case ACPI_IBM_METHOD_FANSTATUS:
838 if (!sc->fan_handle) {
839 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
840 val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
841 } else
842 val = -1;
843 break;
844
845 case ACPI_IBM_METHOD_MIC_LED:
846 if (sc->mic_led_handle)
847 return sc->mic_led_state;
848 else
849 val = -1;
850 break;
851
852 case ACPI_IBM_METHOD_PRIVACYGUARD:
853 val = acpi_ibm_privacyguard_get(sc);
854 break;
855 }
856
857 return (val);
858 }
859
860 static int
acpi_ibm_sysctl_set(struct acpi_ibm_softc * sc,int method,int arg)861 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
862 {
863 int val;
864 UINT64 val_ec;
865 ACPI_STATUS status;
866
867 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
868 ACPI_SERIAL_ASSERT(ibm);
869
870 switch (method) {
871 case ACPI_IBM_METHOD_EVENTS:
872 if (arg < 0 || arg > 1)
873 return (EINVAL);
874
875 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
876 if (ACPI_FAILURE(status))
877 return (status);
878 if (sc->events_mask_supported)
879 return acpi_ibm_eventmask_set(sc, sc->events_availmask);
880 break;
881
882 case ACPI_IBM_METHOD_EVENTMASK:
883 if (sc->events_mask_supported)
884 return acpi_ibm_eventmask_set(sc, arg);
885 break;
886
887 case ACPI_IBM_METHOD_BRIGHTNESS:
888 return acpi_ibm_brightness_set(sc, arg);
889 break;
890
891 case ACPI_IBM_METHOD_VOLUME:
892 return acpi_ibm_volume_set(sc, arg);
893 break;
894
895 case ACPI_IBM_METHOD_MUTE:
896 return acpi_ibm_mute_set(sc, arg);
897 break;
898
899 case ACPI_IBM_METHOD_MIC_LED:
900 return acpi_ibm_mic_led_set(sc, arg);
901 break;
902
903 case ACPI_IBM_METHOD_THINKLIGHT:
904 return acpi_ibm_thinklight_set(sc, arg);
905 break;
906
907 case ACPI_IBM_METHOD_BLUETOOTH:
908 return acpi_ibm_bluetooth_set(sc, arg);
909 break;
910
911 case ACPI_IBM_METHOD_PRIVACYGUARD:
912 return (acpi_status_to_errno(acpi_ibm_privacyguard_set(sc, arg)));
913 break;
914
915 case ACPI_IBM_METHOD_FANLEVEL:
916 if (arg < 0 || arg > 8)
917 return (EINVAL);
918
919 if (!sc->fan_handle) {
920 /* Read the current fan status. */
921 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
922 val = val_ec & ~(IBM_EC_MASK_FANLEVEL |
923 IBM_EC_MASK_FANUNTHROTTLED);
924
925 if (arg == 8)
926 /* Full speed, set the unthrottled bit. */
927 val |= 7 | IBM_EC_MASK_FANUNTHROTTLED;
928 else
929 val |= arg;
930
931 return (ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val,
932 1));
933 }
934 break;
935
936 case ACPI_IBM_METHOD_FANSTATUS:
937 if (arg < 0 || arg > 1)
938 return (EINVAL);
939
940 if (!sc->fan_handle) {
941 /* Read the current fanstatus */
942 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
943
944 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
945 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
946 }
947 break;
948 }
949
950 return (0);
951 }
952
953 static int
acpi_ibm_sysctl_init(struct acpi_ibm_softc * sc,int method)954 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
955 {
956 int dummy;
957 ACPI_OBJECT_TYPE cmos_t;
958 ACPI_HANDLE ledb_handle;
959
960 switch (method) {
961 case ACPI_IBM_METHOD_EVENTS:
962 return (TRUE);
963
964 case ACPI_IBM_METHOD_EVENTMASK:
965 return (sc->events_mask_supported);
966
967 case ACPI_IBM_METHOD_HOTKEY:
968 case ACPI_IBM_METHOD_BRIGHTNESS:
969 case ACPI_IBM_METHOD_VOLUME:
970 case ACPI_IBM_METHOD_MUTE:
971 /* EC is required here, which was already checked before */
972 return (TRUE);
973
974 case ACPI_IBM_METHOD_MIC_LED:
975 if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))
976 {
977 /* Turn off mic led by default */
978 acpi_ibm_mic_led_set(sc, 0);
979 return (TRUE);
980 } else
981 sc->mic_led_handle = NULL;
982 return (FALSE);
983
984 case ACPI_IBM_METHOD_THINKLIGHT:
985 sc->cmos_handle = NULL;
986 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
987 sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
988
989 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
990 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
991 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
992 ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
993 cmos_t == ACPI_TYPE_METHOD) {
994 sc->light_cmd_on = 0x0c;
995 sc->light_cmd_off = 0x0d;
996 sc->cmos_handle = sc->light_handle;
997 }
998 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
999 sc->light_cmd_on = 1;
1000 sc->light_cmd_off = 0;
1001 } else
1002 sc->light_handle = NULL;
1003
1004 sc->light_set_supported = (sc->light_handle &&
1005 ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
1006
1007 if (sc->light_get_supported)
1008 return (TRUE);
1009
1010 if (sc->light_set_supported) {
1011 sc->light_val = 0;
1012 return (TRUE);
1013 }
1014
1015 return (FALSE);
1016
1017 case ACPI_IBM_METHOD_BLUETOOTH:
1018 case ACPI_IBM_METHOD_WLAN:
1019 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
1020 return (TRUE);
1021 return (FALSE);
1022
1023 case ACPI_IBM_METHOD_FANSPEED:
1024 /*
1025 * Some models report the fan speed in levels from 0-7
1026 * Newer models report it contiguously
1027 */
1028 sc->fan_levels =
1029 (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
1030 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
1031 return (TRUE);
1032
1033 case ACPI_IBM_METHOD_FANLEVEL:
1034 case ACPI_IBM_METHOD_FANSTATUS:
1035 /*
1036 * Fan status is only supported on those models,
1037 * which report fan RPM contiguously, not in levels
1038 */
1039 if (sc->fan_levels)
1040 return (FALSE);
1041 return (TRUE);
1042
1043 case ACPI_IBM_METHOD_THERMAL:
1044 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
1045 sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
1046 return (TRUE);
1047 }
1048 return (FALSE);
1049
1050 case ACPI_IBM_METHOD_HANDLEREVENTS:
1051 return (TRUE);
1052
1053 case ACPI_IBM_METHOD_PRIVACYGUARD:
1054 return (acpi_ibm_privacyguard_get(sc) != -1);
1055 }
1056 return (FALSE);
1057 }
1058
1059 static int
acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)1060 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
1061 {
1062 struct acpi_ibm_softc *sc;
1063 int error = 0;
1064 char temp_cmd[] = "TMP0";
1065 int temp[8];
1066
1067 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1068
1069 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1070
1071 ACPI_SERIAL_BEGIN(ibm);
1072
1073 for (int i = 0; i < 8; ++i) {
1074 temp_cmd[3] = '0' + i;
1075
1076 /*
1077 * The TMPx methods seem to return +/- 128 or 0
1078 * when the respecting sensor is not available
1079 */
1080 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
1081 &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
1082 temp[i] = -1;
1083 else if (sc->thermal_updt_supported)
1084 /* Temperature is reported in tenth of Kelvin */
1085 temp[i] = (temp[i] - 2731 + 5) / 10;
1086 }
1087
1088 error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
1089
1090 ACPI_SERIAL_END(ibm);
1091 return (error);
1092 }
1093
1094 static int
acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)1095 acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)
1096 {
1097 struct acpi_ibm_softc *sc;
1098 int error = 0;
1099 struct sbuf sb;
1100 char *cp, *ep;
1101 int l, val;
1102 unsigned int handler_events;
1103 char temp[128];
1104
1105 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1106
1107 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1108
1109 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
1110 return (ENOMEM);
1111
1112 ACPI_SERIAL_BEGIN(ibm);
1113
1114 /* Get old values if this is a get request. */
1115 if (req->newptr == NULL) {
1116 for (int i = 0; i < 8 * sizeof(sc->handler_events); i++)
1117 if (sc->handler_events & (1 << i))
1118 sbuf_printf(&sb, "0x%02x ", i + 1);
1119 if (sbuf_len(&sb) == 0)
1120 sbuf_printf(&sb, "NONE");
1121 }
1122
1123 sbuf_trim(&sb);
1124 sbuf_finish(&sb);
1125 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
1126 sbuf_delete(&sb);
1127
1128 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
1129
1130 /* Check for error or no change */
1131 if (error != 0 || req->newptr == NULL)
1132 goto out;
1133
1134 /* If the user is setting a string, parse it. */
1135 handler_events = 0;
1136 cp = temp;
1137 while (*cp) {
1138 if (isspace(*cp)) {
1139 cp++;
1140 continue;
1141 }
1142
1143 ep = cp;
1144
1145 while (*ep && !isspace(*ep))
1146 ep++;
1147
1148 l = ep - cp;
1149 if (l == 0)
1150 break;
1151
1152 if (strncmp(cp, "NONE", 4) == 0) {
1153 cp = ep;
1154 continue;
1155 }
1156
1157 if (l >= 3 && cp[0] == '0' && (cp[1] == 'X' || cp[1] == 'x'))
1158 val = strtoul(cp, &ep, 16);
1159 else
1160 val = strtoul(cp, &ep, 10);
1161
1162 if (val == 0 || ep == cp || val >= 8 * sizeof(handler_events)) {
1163 cp[l] = '\0';
1164 device_printf(sc->dev, "invalid event code: %s\n", cp);
1165 error = EINVAL;
1166 goto out;
1167 }
1168
1169 handler_events |= 1 << (val - 1);
1170
1171 cp = ep;
1172 }
1173
1174 sc->handler_events = handler_events;
1175 out:
1176 ACPI_SERIAL_END(ibm);
1177 return (error);
1178 }
1179
1180 static int
acpi_ibm_brightness_set(struct acpi_ibm_softc * sc,int arg)1181 acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg)
1182 {
1183 int val, step;
1184 UINT64 val_ec;
1185 ACPI_OBJECT Arg;
1186 ACPI_OBJECT_LIST Args;
1187 ACPI_STATUS status;
1188
1189 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1190 ACPI_SERIAL_ASSERT(ibm);
1191
1192 if (arg < 0 || arg > 7)
1193 return (EINVAL);
1194
1195 /* Read the current brightness */
1196 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
1197 if (ACPI_FAILURE(status))
1198 return (status);
1199
1200 if (sc->cmos_handle) {
1201 val = val_ec & IBM_EC_MASK_BRI;
1202
1203 Args.Count = 1;
1204 Args.Pointer = &Arg;
1205 Arg.Type = ACPI_TYPE_INTEGER;
1206 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP :
1207 IBM_CMOS_BRIGHTNESS_DOWN;
1208
1209 step = (arg > val) ? 1 : -1;
1210 for (int i = val; i != arg; i += step) {
1211 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1212 &Args, NULL);
1213 if (ACPI_FAILURE(status)) {
1214 /* Record the last value */
1215 if (i != val) {
1216 ACPI_EC_WRITE(sc->ec_dev,
1217 IBM_EC_BRIGHTNESS, i - step, 1);
1218 }
1219 return (status);
1220 }
1221 }
1222 }
1223
1224 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
1225 }
1226
1227 static int
acpi_ibm_bluetooth_set(struct acpi_ibm_softc * sc,int arg)1228 acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg)
1229 {
1230 int val;
1231
1232 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1233 ACPI_SERIAL_ASSERT(ibm);
1234
1235 if (arg < 0 || arg > 1)
1236 return (EINVAL);
1237
1238 val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT :
1239 sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
1240 return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
1241 }
1242
1243 static int
acpi_ibm_thinklight_set(struct acpi_ibm_softc * sc,int arg)1244 acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg)
1245 {
1246 ACPI_OBJECT Arg;
1247 ACPI_OBJECT_LIST Args;
1248 ACPI_STATUS status;
1249
1250 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1251 ACPI_SERIAL_ASSERT(ibm);
1252
1253 if (arg < 0 || arg > 1)
1254 return (EINVAL);
1255
1256 if (sc->light_set_supported) {
1257 Args.Count = 1;
1258 Args.Pointer = &Arg;
1259 Arg.Type = ACPI_TYPE_INTEGER;
1260 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
1261
1262 status = AcpiEvaluateObject(sc->light_handle, NULL,
1263 &Args, NULL);
1264 if (ACPI_SUCCESS(status))
1265 sc->light_val = arg;
1266 return (status);
1267 }
1268
1269 return (0);
1270 }
1271
1272 /*
1273 * Helper function to make a get or set ACPI call to the PrivacyGuard handle.
1274 * Only meant to be used internally by the get/set functions below.
1275 */
1276 static ACPI_STATUS
acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc * sc,bool write,int * arg)1277 acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg)
1278 {
1279 ACPI_OBJECT Arg;
1280 ACPI_OBJECT_LIST Args;
1281 ACPI_STATUS status;
1282 ACPI_OBJECT out_obj;
1283 ACPI_BUFFER result;
1284
1285 Arg.Type = ACPI_TYPE_INTEGER;
1286 Arg.Integer.Value = (write ? *arg : 0);
1287 Args.Count = 1;
1288 Args.Pointer = &Arg;
1289 result.Length = sizeof(out_obj);
1290 result.Pointer = &out_obj;
1291
1292 status = AcpiEvaluateObject(sc->handle,
1293 (write ? IBM_NAME_PRIVACYGUARD_SET : IBM_NAME_PRIVACYGUARD_GET),
1294 &Args, &result);
1295 if (ACPI_SUCCESS(status) && !write)
1296 *arg = out_obj.Integer.Value;
1297
1298 return (status);
1299 }
1300
1301 /*
1302 * Returns -1 if the device is not present.
1303 */
1304 static int
acpi_ibm_privacyguard_get(struct acpi_ibm_softc * sc)1305 acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc)
1306 {
1307 ACPI_STATUS status;
1308 int val;
1309
1310 status = acpi_ibm_privacyguard_acpi_call(sc, false, &val);
1311 if (ACPI_SUCCESS(status) &&
1312 (val & IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT))
1313 return (val & IBM_FLAG_PRIVACYGUARD_ON);
1314
1315 return (-1);
1316 }
1317
1318 static ACPI_STATUS
acpi_ibm_privacyguard_set(struct acpi_ibm_softc * sc,int arg)1319 acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg)
1320 {
1321 if (arg < 0 || arg > 1)
1322 return (AE_BAD_PARAMETER);
1323
1324 return (acpi_ibm_privacyguard_acpi_call(sc, true, &arg));
1325 }
1326
1327 static int
acpi_ibm_volume_set(struct acpi_ibm_softc * sc,int arg)1328 acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
1329 {
1330 int val, step;
1331 UINT64 val_ec;
1332 ACPI_OBJECT Arg;
1333 ACPI_OBJECT_LIST Args;
1334 ACPI_STATUS status;
1335
1336 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1337 ACPI_SERIAL_ASSERT(ibm);
1338
1339 if (arg < 0 || arg > 14)
1340 return (EINVAL);
1341
1342 /* Read the current volume */
1343 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1344 if (ACPI_FAILURE(status))
1345 return (status);
1346
1347 if (sc->cmos_handle) {
1348 val = val_ec & IBM_EC_MASK_VOL;
1349
1350 Args.Count = 1;
1351 Args.Pointer = &Arg;
1352 Arg.Type = ACPI_TYPE_INTEGER;
1353 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP :
1354 IBM_CMOS_VOLUME_DOWN;
1355
1356 step = (arg > val) ? 1 : -1;
1357 for (int i = val; i != arg; i += step) {
1358 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1359 &Args, NULL);
1360 if (ACPI_FAILURE(status)) {
1361 /* Record the last value */
1362 if (i != val) {
1363 val_ec = i - step +
1364 (val_ec & (~IBM_EC_MASK_VOL));
1365 ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME,
1366 val_ec, 1);
1367 }
1368 return (status);
1369 }
1370 }
1371 }
1372
1373 val_ec = arg + (val_ec & (~IBM_EC_MASK_VOL));
1374 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1375 }
1376
1377 static int
acpi_ibm_mute_set(struct acpi_ibm_softc * sc,int arg)1378 acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg)
1379 {
1380 UINT64 val_ec;
1381 ACPI_OBJECT Arg;
1382 ACPI_OBJECT_LIST Args;
1383 ACPI_STATUS status;
1384
1385 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1386 ACPI_SERIAL_ASSERT(ibm);
1387
1388 if (arg < 0 || arg > 1)
1389 return (EINVAL);
1390
1391 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1392 if (ACPI_FAILURE(status))
1393 return (status);
1394
1395 if (sc->cmos_handle) {
1396 Args.Count = 1;
1397 Args.Pointer = &Arg;
1398 Arg.Type = ACPI_TYPE_INTEGER;
1399 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
1400
1401 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
1402 if (ACPI_FAILURE(status))
1403 return (status);
1404 }
1405
1406 val_ec = (arg == 1) ? val_ec | IBM_EC_MASK_MUTE :
1407 val_ec & (~IBM_EC_MASK_MUTE);
1408 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1409 }
1410
1411 static void
acpi_ibm_eventhandler(struct acpi_ibm_softc * sc,int arg)1412 acpi_ibm_eventhandler(struct acpi_ibm_softc *sc, int arg)
1413 {
1414 int val;
1415 UINT64 val_ec;
1416 ACPI_STATUS status;
1417
1418 ACPI_SERIAL_BEGIN(ibm);
1419 switch (arg) {
1420 case IBM_EVENT_SUSPEND_TO_RAM:
1421 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
1422 break;
1423
1424 case IBM_EVENT_BLUETOOTH:
1425 acpi_ibm_bluetooth_set(sc, (sc->wlan_bt_flags == 0));
1426 break;
1427
1428 case IBM_EVENT_BRIGHTNESS_UP:
1429 case IBM_EVENT_BRIGHTNESS_DOWN:
1430 /* Read the current brightness */
1431 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS,
1432 &val_ec, 1);
1433 if (ACPI_FAILURE(status))
1434 return;
1435
1436 val = val_ec & IBM_EC_MASK_BRI;
1437 val = (arg == IBM_EVENT_BRIGHTNESS_UP) ? val + 1 : val - 1;
1438 acpi_ibm_brightness_set(sc, val);
1439 break;
1440
1441 case IBM_EVENT_THINKLIGHT:
1442 acpi_ibm_thinklight_set(sc, (sc->light_val == 0));
1443 break;
1444
1445 case IBM_EVENT_VOLUME_UP:
1446 case IBM_EVENT_VOLUME_DOWN:
1447 /* Read the current volume */
1448 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1449 if (ACPI_FAILURE(status))
1450 return;
1451
1452 val = val_ec & IBM_EC_MASK_VOL;
1453 val = (arg == IBM_EVENT_VOLUME_UP) ? val + 1 : val - 1;
1454 acpi_ibm_volume_set(sc, val);
1455 break;
1456
1457 case IBM_EVENT_MUTE:
1458 /* Read the current value */
1459 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1460 if (ACPI_FAILURE(status))
1461 return;
1462
1463 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
1464 acpi_ibm_mute_set(sc, (val == 0));
1465 break;
1466
1467 default:
1468 break;
1469 }
1470 ACPI_SERIAL_END(ibm);
1471 }
1472
1473 static void
acpi_ibm_notify(ACPI_HANDLE h,UINT32 notify,void * context)1474 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
1475 {
1476 int event, arg, type;
1477 device_t dev = context;
1478 struct acpi_ibm_softc *sc = device_get_softc(dev);
1479
1480 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
1481
1482 if (notify != 0x80)
1483 device_printf(dev, "Unknown notify\n");
1484
1485 for (;;) {
1486 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
1487 if (event == 0)
1488 break;
1489
1490 type = (event >> 12) & 0xf;
1491 arg = event & 0xfff;
1492 switch (type) {
1493 case 1:
1494 if (!(sc->events_availmask & (1 << (arg - 1)))) {
1495 device_printf(dev, "Unknown key %d\n", arg);
1496 break;
1497 }
1498
1499 /* Execute event handler */
1500 if (sc->handler_events & (1 << (arg - 1)))
1501 acpi_ibm_eventhandler(sc, (arg & 0xff));
1502
1503 /* Notify devd(8) */
1504 acpi_UserNotify("IBM", h, (arg & 0xff));
1505 break;
1506 default:
1507 break;
1508 }
1509 }
1510 }
1511