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 "opt_evdev.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/bus.h>
45 #include <machine/cpufunc.h>
46
47 #include <contrib/dev/acpica/include/acpi.h>
48 #include <contrib/dev/acpica/include/accommon.h>
49
50 #include "acpi_if.h"
51 #include <sys/module.h>
52 #include <dev/acpica/acpivar.h>
53 #include <dev/led/led.h>
54 #include <sys/power.h>
55 #include <sys/sbuf.h>
56 #include <sys/sysctl.h>
57 #include <isa/rtc.h>
58
59 #ifdef EVDEV_SUPPORT
60 #include <dev/evdev/input.h>
61 #include <dev/evdev/evdev.h>
62 #endif
63
64 #define _COMPONENT ACPI_OEM
65 ACPI_MODULE_NAME("IBM")
66
67 /* Internal methods */
68 #define ACPI_IBM_METHOD_EVENTS 1
69 #define ACPI_IBM_METHOD_EVENTMASK 2
70 #define ACPI_IBM_METHOD_HOTKEY 3
71 #define ACPI_IBM_METHOD_BRIGHTNESS 4
72 #define ACPI_IBM_METHOD_VOLUME 5
73 #define ACPI_IBM_METHOD_MUTE 6
74 #define ACPI_IBM_METHOD_THINKLIGHT 7
75 #define ACPI_IBM_METHOD_BLUETOOTH 8
76 #define ACPI_IBM_METHOD_WLAN 9
77 #define ACPI_IBM_METHOD_FANSPEED 10
78 #define ACPI_IBM_METHOD_FANLEVEL 11
79 #define ACPI_IBM_METHOD_FANSTATUS 12
80 #define ACPI_IBM_METHOD_THERMAL 13
81 #define ACPI_IBM_METHOD_HANDLEREVENTS 14
82 #define ACPI_IBM_METHOD_MIC_LED 15
83 #define ACPI_IBM_METHOD_PRIVACYGUARD 16
84
85 /* Hotkeys/Buttons */
86 #define IBM_RTC_HOTKEY1 0x64
87 #define IBM_RTC_MASK_HOME (1 << 0)
88 #define IBM_RTC_MASK_SEARCH (1 << 1)
89 #define IBM_RTC_MASK_MAIL (1 << 2)
90 #define IBM_RTC_MASK_WLAN (1 << 5)
91 #define IBM_RTC_HOTKEY2 0x65
92 #define IBM_RTC_MASK_THINKPAD (1 << 3)
93 #define IBM_RTC_MASK_ZOOM (1 << 5)
94 #define IBM_RTC_MASK_VIDEO (1 << 6)
95 #define IBM_RTC_MASK_HIBERNATE (1 << 7)
96 #define IBM_RTC_THINKLIGHT 0x66
97 #define IBM_RTC_MASK_THINKLIGHT (1 << 4)
98 #define IBM_RTC_SCREENEXPAND 0x67
99 #define IBM_RTC_MASK_SCREENEXPAND (1 << 5)
100 #define IBM_RTC_BRIGHTNESS 0x6c
101 #define IBM_RTC_MASK_BRIGHTNESS (1 << 5)
102 #define IBM_RTC_VOLUME 0x6e
103 #define IBM_RTC_MASK_VOLUME (1 << 7)
104
105 /* Embedded Controller registers */
106 #define IBM_EC_BRIGHTNESS 0x31
107 #define IBM_EC_MASK_BRI 0x7
108 #define IBM_EC_VOLUME 0x30
109 #define IBM_EC_MASK_VOL 0xf
110 #define IBM_EC_MASK_MUTE (1 << 6)
111 #define IBM_EC_FANSTATUS 0x2F
112 #define IBM_EC_MASK_FANLEVEL 0x3f
113 #define IBM_EC_MASK_FANUNTHROTTLED (1 << 6)
114 #define IBM_EC_MASK_FANSTATUS (1 << 7)
115 #define IBM_EC_FANSPEED 0x84
116
117 /* CMOS Commands */
118 #define IBM_CMOS_VOLUME_DOWN 0
119 #define IBM_CMOS_VOLUME_UP 1
120 #define IBM_CMOS_VOLUME_MUTE 2
121 #define IBM_CMOS_BRIGHTNESS_UP 4
122 #define IBM_CMOS_BRIGHTNESS_DOWN 5
123
124 /* ACPI methods */
125 #define IBM_NAME_KEYLIGHT "KBLT"
126 #define IBM_NAME_WLAN_BT_GET "GBDC"
127 #define IBM_NAME_WLAN_BT_SET "SBDC"
128 #define IBM_NAME_MASK_BT (1 << 1)
129 #define IBM_NAME_MASK_WLAN (1 << 2)
130 #define IBM_NAME_THERMAL_GET "TMP7"
131 #define IBM_NAME_THERMAL_UPDT "UPDT"
132 #define IBM_NAME_PRIVACYGUARD_GET "GSSS"
133 #define IBM_NAME_PRIVACYGUARD_SET "SSSS"
134
135 #define IBM_NAME_EVENTS_STATUS_GET "DHKC"
136 #define IBM_NAME_EVENTS_MASK_GET "DHKN"
137 #define IBM_NAME_EVENTS_STATUS_SET "MHKC"
138 #define IBM_NAME_EVENTS_MASK_SET "MHKM"
139 #define IBM_NAME_EVENTS_GET "MHKP"
140 #define IBM_NAME_EVENTS_AVAILMASK "MHKA"
141
142 /* Event Code */
143 #define IBM_EVENT_LCD_BACKLIGHT 0x03
144 #define IBM_EVENT_SUSPEND_TO_RAM 0x04
145 #define IBM_EVENT_BLUETOOTH 0x05
146 #define IBM_EVENT_SCREEN_EXPAND 0x07
147 #define IBM_EVENT_SUSPEND_TO_DISK 0x0c
148 #define IBM_EVENT_BRIGHTNESS_UP 0x10
149 #define IBM_EVENT_BRIGHTNESS_DOWN 0x11
150 #define IBM_EVENT_THINKLIGHT 0x12
151 #define IBM_EVENT_ZOOM 0x14
152 #define IBM_EVENT_VOLUME_UP 0x15
153 #define IBM_EVENT_VOLUME_DOWN 0x16
154 #define IBM_EVENT_MUTE 0x17
155 #define IBM_EVENT_ACCESS_IBM_BUTTON 0x18
156
157 /* Device-specific register flags */
158 #define IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT 0x10000
159 #define IBM_FLAG_PRIVACYGUARD_ON 0x1
160
161 #define ABS(x) (((x) < 0)? -(x) : (x))
162
163 struct acpi_ibm_softc {
164 device_t dev;
165 ACPI_HANDLE handle;
166
167 /* Embedded controller */
168 device_t ec_dev;
169 ACPI_HANDLE ec_handle;
170
171 /* CMOS */
172 ACPI_HANDLE cmos_handle;
173
174 /* Fan status */
175 ACPI_HANDLE fan_handle;
176 int fan_levels;
177
178 /* Keylight commands and states */
179 ACPI_HANDLE light_handle;
180 int light_cmd_on;
181 int light_cmd_off;
182 int light_val;
183 int light_get_supported;
184 int light_set_supported;
185
186 /* led(4) interface */
187 struct cdev *led_dev;
188 int led_busy;
189 int led_state;
190
191 /* Mic led handle */
192 ACPI_HANDLE mic_led_handle;
193 int mic_led_state;
194
195 int wlan_bt_flags;
196 int thermal_updt_supported;
197
198 unsigned int events_availmask;
199 unsigned int events_initialmask;
200 int events_mask_supported;
201 int events_enable;
202
203 unsigned int handler_events;
204
205 struct sysctl_ctx_list *sysctl_ctx;
206 struct sysctl_oid *sysctl_tree;
207 #ifdef EVDEV_SUPPORT
208 struct evdev_dev *evdev;
209 #endif
210 };
211
212 static struct {
213 char *name;
214 int method;
215 char *description;
216 int flag_rdonly;
217 } acpi_ibm_sysctls[] = {
218 {
219 .name = "events",
220 .method = ACPI_IBM_METHOD_EVENTS,
221 .description = "ACPI events enable",
222 },
223 {
224 .name = "eventmask",
225 .method = ACPI_IBM_METHOD_EVENTMASK,
226 .description = "ACPI eventmask",
227 },
228 {
229 .name = "hotkey",
230 .method = ACPI_IBM_METHOD_HOTKEY,
231 .description = "Key Status",
232 .flag_rdonly = 1
233 },
234 {
235 .name = "lcd_brightness",
236 .method = ACPI_IBM_METHOD_BRIGHTNESS,
237 .description = "LCD Brightness",
238 },
239 {
240 .name = "volume",
241 .method = ACPI_IBM_METHOD_VOLUME,
242 .description = "Volume",
243 },
244 {
245 .name = "mute",
246 .method = ACPI_IBM_METHOD_MUTE,
247 .description = "Mute",
248 },
249 {
250 .name = "thinklight",
251 .method = ACPI_IBM_METHOD_THINKLIGHT,
252 .description = "Thinklight enable",
253 },
254 {
255 .name = "bluetooth",
256 .method = ACPI_IBM_METHOD_BLUETOOTH,
257 .description = "Bluetooth enable",
258 },
259 {
260 .name = "wlan",
261 .method = ACPI_IBM_METHOD_WLAN,
262 .description = "WLAN enable",
263 .flag_rdonly = 1
264 },
265 {
266 .name = "fan_speed",
267 .method = ACPI_IBM_METHOD_FANSPEED,
268 .description = "Fan speed",
269 .flag_rdonly = 1
270 },
271 {
272 .name = "fan_level",
273 .method = ACPI_IBM_METHOD_FANLEVEL,
274 .description = "Fan level, 0-7 (recommended max), "
275 "8 (unthrottled, full-speed)",
276 },
277 {
278 .name = "fan",
279 .method = ACPI_IBM_METHOD_FANSTATUS,
280 .description = "Fan enable",
281 },
282 {
283 .name = "mic_led",
284 .method = ACPI_IBM_METHOD_MIC_LED,
285 .description = "Mic led",
286 },
287 {
288 .name = "privacyguard",
289 .method = ACPI_IBM_METHOD_PRIVACYGUARD,
290 .description = "PrivacyGuard enable",
291 },
292 { NULL, 0, NULL, 0 }
293 };
294
295 /*
296 * Per-model default list of event mask.
297 */
298 #define ACPI_IBM_HKEY_RFKILL_MASK (1 << 4)
299 #define ACPI_IBM_HKEY_DSWITCH_MASK (1 << 6)
300 #define ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK (1 << 15)
301 #define ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK (1 << 16)
302 #define ACPI_IBM_HKEY_SEARCH_MASK (1 << 18)
303 #define ACPI_IBM_HKEY_MICMUTE_MASK (1 << 26)
304 #define ACPI_IBM_HKEY_SETTINGS_MASK (1 << 28)
305 #define ACPI_IBM_HKEY_VIEWOPEN_MASK (1 << 30)
306 #define ACPI_IBM_HKEY_VIEWALL_MASK (1 << 31)
307
308 struct acpi_ibm_models {
309 const char *maker;
310 const char *product;
311 uint32_t eventmask;
312 } acpi_ibm_models[] = {
313 { "LENOVO", "20BSCTO1WW",
314 ACPI_IBM_HKEY_RFKILL_MASK |
315 ACPI_IBM_HKEY_DSWITCH_MASK |
316 ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK |
317 ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK |
318 ACPI_IBM_HKEY_SEARCH_MASK |
319 ACPI_IBM_HKEY_MICMUTE_MASK |
320 ACPI_IBM_HKEY_SETTINGS_MASK |
321 ACPI_IBM_HKEY_VIEWOPEN_MASK |
322 ACPI_IBM_HKEY_VIEWALL_MASK
323 }
324 };
325
326 ACPI_SERIAL_DECL(ibm, "ThinkPad ACPI Extras");
327
328 static int acpi_ibm_probe(device_t dev);
329 static int acpi_ibm_attach(device_t dev);
330 static int acpi_ibm_detach(device_t dev);
331 static int acpi_ibm_resume(device_t dev);
332
333 static void ibm_led(void *softc, int onoff);
334 static void ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
335
336 static int acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS);
337 static int acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method);
338 static int acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method);
339 static int acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int val);
340
341 static int acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val);
342 static int acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS);
343 static int acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS);
344 static void acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context);
345
346 static int acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg);
347 static int acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg);
348 static int acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg);
349 static int acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg);
350 static int acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg);
351 static int acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc);
352 static ACPI_STATUS acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg);
353 static ACPI_STATUS acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg);
354
355 static int acpi_status_to_errno(ACPI_STATUS status);
356
357 static device_method_t acpi_ibm_methods[] = {
358 /* Device interface */
359 DEVMETHOD(device_probe, acpi_ibm_probe),
360 DEVMETHOD(device_attach, acpi_ibm_attach),
361 DEVMETHOD(device_detach, acpi_ibm_detach),
362 DEVMETHOD(device_resume, acpi_ibm_resume),
363
364 DEVMETHOD_END
365 };
366
367 static driver_t acpi_ibm_driver = {
368 "acpi_ibm",
369 acpi_ibm_methods,
370 sizeof(struct acpi_ibm_softc),
371 };
372
373 DRIVER_MODULE(acpi_ibm, acpi, acpi_ibm_driver, 0, 0);
374 MODULE_DEPEND(acpi_ibm, acpi, 1, 1, 1);
375 #ifdef EVDEV_SUPPORT
376 MODULE_DEPEND(acpi_ibm, evdev, 1, 1, 1);
377 #endif
378 static char *ibm_ids[] = {"IBM0068", "LEN0068", "LEN0268", NULL};
379
380 static int
acpi_status_to_errno(ACPI_STATUS status)381 acpi_status_to_errno(ACPI_STATUS status)
382 {
383 switch (status) {
384 case AE_OK:
385 return (0);
386 case AE_BAD_PARAMETER:
387 return (EINVAL);
388 default:
389 return (ENODEV);
390 }
391 }
392
393 static void
ibm_led(void * softc,int onoff)394 ibm_led(void *softc, int onoff)
395 {
396 struct acpi_ibm_softc *sc = softc;
397
398 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
399
400 if (sc->led_busy)
401 return;
402
403 sc->led_busy = 1;
404 sc->led_state = onoff;
405
406 AcpiOsExecute(OSL_NOTIFY_HANDLER, (void *)ibm_led_task, sc);
407 }
408
409 static void
ibm_led_task(struct acpi_ibm_softc * sc,int pending __unused)410 ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused)
411 {
412 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
413
414 ACPI_SERIAL_BEGIN(ibm);
415 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_THINKLIGHT, sc->led_state);
416 ACPI_SERIAL_END(ibm);
417
418 sc->led_busy = 0;
419 }
420
421 static int
acpi_ibm_mic_led_set(struct acpi_ibm_softc * sc,int arg)422 acpi_ibm_mic_led_set(struct acpi_ibm_softc *sc, int arg)
423 {
424 ACPI_OBJECT_LIST input;
425 ACPI_OBJECT params[1];
426 ACPI_STATUS status;
427
428 if (arg < 0 || arg > 1)
429 return (EINVAL);
430
431 if (sc->mic_led_handle) {
432 params[0].Type = ACPI_TYPE_INTEGER;
433 params[0].Integer.Value = 0;
434 /* mic led: 0 off, 2 on */
435 if (arg == 1)
436 params[0].Integer.Value = 2;
437
438 input.Pointer = params;
439 input.Count = 1;
440
441 status = AcpiEvaluateObject(sc->handle, "MMTS", &input, NULL);
442 if (ACPI_SUCCESS(status))
443 sc->mic_led_state = arg;
444 return (status);
445 }
446
447 return (0);
448 }
449
450 static int
acpi_ibm_probe(device_t dev)451 acpi_ibm_probe(device_t dev)
452 {
453 int rv;
454
455 if (acpi_disabled("ibm") || device_get_unit(dev) != 0)
456 return (ENXIO);
457 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids, NULL);
458
459 if (rv <= 0)
460 device_set_desc(dev, "ThinkPad ACPI Extras");
461
462 return (rv);
463 }
464
465 static int
acpi_ibm_attach(device_t dev)466 acpi_ibm_attach(device_t dev)
467 {
468 int i;
469 int hkey;
470 struct acpi_ibm_softc *sc;
471 char *maker, *product;
472 ACPI_OBJECT_LIST input;
473 ACPI_OBJECT params[1];
474 ACPI_OBJECT out_obj;
475 ACPI_BUFFER result;
476 devclass_t ec_devclass;
477
478 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
479
480 sc = device_get_softc(dev);
481 sc->dev = dev;
482 sc->handle = acpi_get_handle(dev);
483
484 /* Look for the first embedded controller */
485 if (!(ec_devclass = devclass_find ("acpi_ec"))) {
486 if (bootverbose)
487 device_printf(dev, "Couldn't find acpi_ec devclass\n");
488 return (EINVAL);
489 }
490 if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
491 if (bootverbose)
492 device_printf(dev, "Couldn't find acpi_ec device\n");
493 return (EINVAL);
494 }
495 sc->ec_handle = acpi_get_handle(sc->ec_dev);
496
497 #ifdef EVDEV_SUPPORT
498 sc->evdev = evdev_alloc();
499 evdev_set_name(sc->evdev, device_get_desc(dev));
500 evdev_set_phys(sc->evdev, device_get_nameunit(dev));
501 evdev_set_id(sc->evdev, BUS_HOST, 0, 0, 1);
502 evdev_support_event(sc->evdev, EV_SYN);
503 evdev_support_event(sc->evdev, EV_KEY);
504 evdev_support_key(sc->evdev, KEY_BRIGHTNESSUP);
505 evdev_support_key(sc->evdev, KEY_BRIGHTNESSDOWN);
506
507 if (evdev_register(sc->evdev) != 0)
508 return (ENXIO);
509 #endif
510
511 /* Get the sysctl tree */
512 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
513 sc->sysctl_tree = device_get_sysctl_tree(dev);
514
515 /* Look for event mask and hook up the nodes */
516 sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
517 IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
518
519 if (sc->events_mask_supported) {
520 SYSCTL_ADD_UINT(sc->sysctl_ctx,
521 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "initialmask",
522 CTLFLAG_RD, &sc->events_initialmask, 0,
523 "Initial eventmask");
524
525 if (ACPI_SUCCESS (acpi_GetInteger(sc->handle, "MHKV", &hkey))) {
526 device_printf(dev, "Firmware version is 0x%X\n", hkey);
527 switch (hkey >> 8) {
528 case 1:
529 /* The availmask is the bitmask of supported events */
530 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
531 IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
532 sc->events_availmask = 0xffffffff;
533 break;
534
535 case 2:
536 result.Length = sizeof(out_obj);
537 result.Pointer = &out_obj;
538 params[0].Type = ACPI_TYPE_INTEGER;
539 params[0].Integer.Value = 1;
540 input.Pointer = params;
541 input.Count = 1;
542
543 sc->events_availmask = 0xffffffff;
544
545 if (ACPI_SUCCESS(AcpiEvaluateObject (sc->handle,
546 IBM_NAME_EVENTS_AVAILMASK, &input, &result)))
547 sc->events_availmask = out_obj.Integer.Value;
548 break;
549 default:
550 device_printf(dev, "Unknown firmware version 0x%x\n", hkey);
551 break;
552 }
553 } else
554 sc->events_availmask = 0xffffffff;
555
556 SYSCTL_ADD_UINT(sc->sysctl_ctx,
557 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
558 "availmask", CTLFLAG_RD,
559 &sc->events_availmask, 0, "Mask of supported events");
560 }
561
562 /* Hook up proc nodes */
563 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
564 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
565 continue;
566
567 if (acpi_ibm_sysctls[i].flag_rdonly != 0) {
568 SYSCTL_ADD_PROC(sc->sysctl_ctx,
569 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
570 acpi_ibm_sysctls[i].name,
571 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
572 sc, i, acpi_ibm_sysctl, "I",
573 acpi_ibm_sysctls[i].description);
574 } else {
575 SYSCTL_ADD_PROC(sc->sysctl_ctx,
576 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
577 acpi_ibm_sysctls[i].name,
578 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
579 sc, i, acpi_ibm_sysctl, "I",
580 acpi_ibm_sysctls[i].description);
581 }
582 }
583
584 /* Hook up thermal node */
585 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
586 SYSCTL_ADD_PROC(sc->sysctl_ctx,
587 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "thermal",
588 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0,
589 acpi_ibm_thermal_sysctl, "I", "Thermal zones");
590 }
591
592 /* Hook up handlerevents node */
593 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_HANDLEREVENTS)) {
594 SYSCTL_ADD_PROC(sc->sysctl_ctx,
595 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "handlerevents",
596 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0,
597 acpi_ibm_handlerevents_sysctl, "I",
598 "devd(8) events handled by acpi_ibm");
599 }
600
601 /* Handle notifies */
602 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
603 acpi_ibm_notify, dev);
604
605 /* Hook up light to led(4) */
606 if (sc->light_set_supported)
607 sc->led_dev = led_create_state(ibm_led, sc, "thinklight",
608 (sc->light_val ? 1 : 0));
609
610 /* Enable per-model events. */
611 maker = kern_getenv("smbios.system.maker");
612 product = kern_getenv("smbios.system.product");
613 if (maker == NULL || product == NULL)
614 goto nosmbios;
615
616 for (i = 0; i < nitems(acpi_ibm_models); i++) {
617 if (strcmp(maker, acpi_ibm_models[i].maker) == 0 &&
618 strcmp(product, acpi_ibm_models[i].product) == 0) {
619 ACPI_SERIAL_BEGIN(ibm);
620 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK,
621 acpi_ibm_models[i].eventmask);
622 ACPI_SERIAL_END(ibm);
623 }
624 }
625
626 nosmbios:
627 freeenv(maker);
628 freeenv(product);
629
630 /* Enable events by default. */
631 ACPI_SERIAL_BEGIN(ibm);
632 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
633 ACPI_SERIAL_END(ibm);
634
635 return (0);
636 }
637
638 static int
acpi_ibm_detach(device_t dev)639 acpi_ibm_detach(device_t dev)
640 {
641 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
642
643 struct acpi_ibm_softc *sc = device_get_softc(dev);
644
645 /* Disable events and restore eventmask */
646 ACPI_SERIAL_BEGIN(ibm);
647 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
648 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
649 ACPI_SERIAL_END(ibm);
650
651 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
652
653 if (sc->led_dev != NULL)
654 led_destroy(sc->led_dev);
655
656 #ifdef EVDEV_SUPPORT
657 evdev_free(sc->evdev);
658 #endif
659
660 return (0);
661 }
662
663 static int
acpi_ibm_resume(device_t dev)664 acpi_ibm_resume(device_t dev)
665 {
666 struct acpi_ibm_softc *sc = device_get_softc(dev);
667
668 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
669
670 ACPI_SERIAL_BEGIN(ibm);
671 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
672 int val;
673
674 val = acpi_ibm_sysctl_get(sc, i);
675
676 if (acpi_ibm_sysctls[i].flag_rdonly != 0)
677 continue;
678
679 acpi_ibm_sysctl_set(sc, i, val);
680 }
681 ACPI_SERIAL_END(ibm);
682
683 /* The mic led does not turn back on when sysctl_set is called in the above loop */
684 acpi_ibm_mic_led_set(sc, sc->mic_led_state);
685
686 return (0);
687 }
688
689 static int
acpi_ibm_eventmask_set(struct acpi_ibm_softc * sc,int val)690 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
691 {
692 ACPI_OBJECT arg[2];
693 ACPI_OBJECT_LIST args;
694 ACPI_STATUS status;
695
696 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
697 ACPI_SERIAL_ASSERT(ibm);
698
699 args.Count = 2;
700 args.Pointer = arg;
701 arg[0].Type = ACPI_TYPE_INTEGER;
702 arg[1].Type = ACPI_TYPE_INTEGER;
703
704 for (int i = 0; i < 32; ++i) {
705 arg[0].Integer.Value = i + 1;
706 arg[1].Integer.Value = (((1 << i) & val) != 0);
707 status = AcpiEvaluateObject(sc->handle,
708 IBM_NAME_EVENTS_MASK_SET, &args, NULL);
709
710 if (ACPI_FAILURE(status))
711 return (status);
712 }
713
714 return (0);
715 }
716
717 static int
acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)718 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
719 {
720 struct acpi_ibm_softc *sc;
721 int arg;
722 int error = 0;
723 int function;
724 int method;
725
726 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
727
728 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
729 function = oidp->oid_arg2;
730 method = acpi_ibm_sysctls[function].method;
731
732 ACPI_SERIAL_BEGIN(ibm);
733 arg = acpi_ibm_sysctl_get(sc, method);
734 error = sysctl_handle_int(oidp, &arg, 0, req);
735
736 /* Sanity check */
737 if (error != 0 || req->newptr == NULL)
738 goto out;
739
740 /* Update */
741 error = acpi_ibm_sysctl_set(sc, method, arg);
742
743 out:
744 ACPI_SERIAL_END(ibm);
745 return (error);
746 }
747
748 static int
acpi_ibm_sysctl_get(struct acpi_ibm_softc * sc,int method)749 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
750 {
751 UINT64 val_ec;
752 int val = 0, key;
753
754 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
755 ACPI_SERIAL_ASSERT(ibm);
756
757 switch (method) {
758 case ACPI_IBM_METHOD_EVENTS:
759 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
760 break;
761
762 case ACPI_IBM_METHOD_EVENTMASK:
763 if (sc->events_mask_supported)
764 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
765 break;
766
767 case ACPI_IBM_METHOD_HOTKEY:
768 /*
769 * Construct the hotkey as a bitmask as illustrated below.
770 * Note that whenever a key was pressed, the respecting bit
771 * toggles and nothing else changes.
772 * +--+--+-+-+-+-+-+-+-+-+-+-+
773 * |11|10|9|8|7|6|5|4|3|2|1|0|
774 * +--+--+-+-+-+-+-+-+-+-+-+-+
775 * | | | | | | | | | | | |
776 * | | | | | | | | | | | +- Home Button
777 * | | | | | | | | | | +--- Search Button
778 * | | | | | | | | | +----- Mail Button
779 * | | | | | | | | +------- Thinkpad Button
780 * | | | | | | | +--------- Zoom (Fn + Space)
781 * | | | | | | +----------- WLAN Button
782 * | | | | | +------------- Video Button
783 * | | | | +--------------- Hibernate Button
784 * | | | +----------------- Thinklight Button
785 * | | +------------------- Screen expand (Fn + F8)
786 * | +--------------------- Brightness
787 * +------------------------ Volume/Mute
788 */
789 key = rtcin(IBM_RTC_HOTKEY1);
790 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
791 key = rtcin(IBM_RTC_HOTKEY2);
792 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
793 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
794 key = rtcin(IBM_RTC_THINKLIGHT);
795 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
796 key = rtcin(IBM_RTC_SCREENEXPAND);
797 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
798 key = rtcin(IBM_RTC_BRIGHTNESS);
799 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
800 key = rtcin(IBM_RTC_VOLUME);
801 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
802 break;
803
804 case ACPI_IBM_METHOD_BRIGHTNESS:
805 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
806 val = val_ec & IBM_EC_MASK_BRI;
807 break;
808
809 case ACPI_IBM_METHOD_VOLUME:
810 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
811 val = val_ec & IBM_EC_MASK_VOL;
812 break;
813
814 case ACPI_IBM_METHOD_MUTE:
815 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
816 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
817 break;
818
819 case ACPI_IBM_METHOD_THINKLIGHT:
820 if (sc->light_get_supported)
821 acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
822 else
823 val = sc->light_val;
824 break;
825
826 case ACPI_IBM_METHOD_BLUETOOTH:
827 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
828 sc->wlan_bt_flags = val;
829 val = ((val & IBM_NAME_MASK_BT) != 0);
830 break;
831
832 case ACPI_IBM_METHOD_WLAN:
833 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
834 sc->wlan_bt_flags = val;
835 val = ((val & IBM_NAME_MASK_WLAN) != 0);
836 break;
837
838 case ACPI_IBM_METHOD_FANSPEED:
839 if (sc->fan_handle) {
840 if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
841 val = -1;
842 } else {
843 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
844 val = val_ec;
845 }
846 break;
847
848 case ACPI_IBM_METHOD_FANLEVEL:
849 /*
850 * The IBM_EC_FANSTATUS register works as follows:
851 * Bit 0-5 indicate the level at which the fan operates. Only
852 * values between 0 and 7 have an effect. Everything
853 * above 7 is treated the same as level 7
854 * Bit 6 overrides the fan speed limit if set to 1
855 * Bit 7 indicates at which mode the fan operates:
856 * manual (0) or automatic (1)
857 */
858 if (!sc->fan_handle) {
859 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
860 if (val_ec & IBM_EC_MASK_FANUNTHROTTLED)
861 val = 8;
862 else
863 val = val_ec & IBM_EC_MASK_FANLEVEL;
864 }
865 break;
866
867 case ACPI_IBM_METHOD_FANSTATUS:
868 if (!sc->fan_handle) {
869 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
870 val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
871 } else
872 val = -1;
873 break;
874
875 case ACPI_IBM_METHOD_MIC_LED:
876 if (sc->mic_led_handle)
877 return sc->mic_led_state;
878 else
879 val = -1;
880 break;
881
882 case ACPI_IBM_METHOD_PRIVACYGUARD:
883 val = acpi_ibm_privacyguard_get(sc);
884 break;
885 }
886
887 return (val);
888 }
889
890 static int
acpi_ibm_sysctl_set(struct acpi_ibm_softc * sc,int method,int arg)891 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
892 {
893 int val;
894 UINT64 val_ec;
895 ACPI_STATUS status;
896
897 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
898 ACPI_SERIAL_ASSERT(ibm);
899
900 switch (method) {
901 case ACPI_IBM_METHOD_EVENTS:
902 if (arg < 0 || arg > 1)
903 return (EINVAL);
904
905 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
906 if (ACPI_FAILURE(status))
907 return (status);
908 if (sc->events_mask_supported)
909 return acpi_ibm_eventmask_set(sc, sc->events_availmask);
910 break;
911
912 case ACPI_IBM_METHOD_EVENTMASK:
913 if (sc->events_mask_supported)
914 return acpi_ibm_eventmask_set(sc, arg);
915 break;
916
917 case ACPI_IBM_METHOD_BRIGHTNESS:
918 return acpi_ibm_brightness_set(sc, arg);
919 break;
920
921 case ACPI_IBM_METHOD_VOLUME:
922 return acpi_ibm_volume_set(sc, arg);
923 break;
924
925 case ACPI_IBM_METHOD_MUTE:
926 return acpi_ibm_mute_set(sc, arg);
927 break;
928
929 case ACPI_IBM_METHOD_MIC_LED:
930 return acpi_ibm_mic_led_set(sc, arg);
931 break;
932
933 case ACPI_IBM_METHOD_THINKLIGHT:
934 return acpi_ibm_thinklight_set(sc, arg);
935 break;
936
937 case ACPI_IBM_METHOD_BLUETOOTH:
938 return acpi_ibm_bluetooth_set(sc, arg);
939 break;
940
941 case ACPI_IBM_METHOD_PRIVACYGUARD:
942 return (acpi_status_to_errno(acpi_ibm_privacyguard_set(sc, arg)));
943 break;
944
945 case ACPI_IBM_METHOD_FANLEVEL:
946 if (arg < 0 || arg > 8)
947 return (EINVAL);
948
949 if (!sc->fan_handle) {
950 /* Read the current fan status. */
951 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
952 val = val_ec & ~(IBM_EC_MASK_FANLEVEL |
953 IBM_EC_MASK_FANUNTHROTTLED);
954
955 if (arg == 8)
956 /* Full speed, set the unthrottled bit. */
957 val |= 7 | IBM_EC_MASK_FANUNTHROTTLED;
958 else
959 val |= arg;
960
961 return (ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val,
962 1));
963 }
964 break;
965
966 case ACPI_IBM_METHOD_FANSTATUS:
967 if (arg < 0 || arg > 1)
968 return (EINVAL);
969
970 if (!sc->fan_handle) {
971 /* Read the current fanstatus */
972 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
973
974 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
975 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
976 }
977 break;
978 }
979
980 return (0);
981 }
982
983 static int
acpi_ibm_sysctl_init(struct acpi_ibm_softc * sc,int method)984 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
985 {
986 int dummy;
987 ACPI_OBJECT_TYPE cmos_t;
988 ACPI_HANDLE ledb_handle;
989
990 switch (method) {
991 case ACPI_IBM_METHOD_EVENTS:
992 return (TRUE);
993
994 case ACPI_IBM_METHOD_EVENTMASK:
995 return (sc->events_mask_supported);
996
997 case ACPI_IBM_METHOD_HOTKEY:
998 case ACPI_IBM_METHOD_BRIGHTNESS:
999 case ACPI_IBM_METHOD_VOLUME:
1000 case ACPI_IBM_METHOD_MUTE:
1001 /* EC is required here, which was already checked before */
1002 return (TRUE);
1003
1004 case ACPI_IBM_METHOD_MIC_LED:
1005 if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))
1006 {
1007 /* Turn off mic led by default */
1008 acpi_ibm_mic_led_set(sc, 0);
1009 return (TRUE);
1010 } else
1011 sc->mic_led_handle = NULL;
1012 return (FALSE);
1013
1014 case ACPI_IBM_METHOD_THINKLIGHT:
1015 sc->cmos_handle = NULL;
1016 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
1017 sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
1018
1019 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
1020 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
1021 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
1022 ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
1023 cmos_t == ACPI_TYPE_METHOD) {
1024 sc->light_cmd_on = 0x0c;
1025 sc->light_cmd_off = 0x0d;
1026 sc->cmos_handle = sc->light_handle;
1027 }
1028 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
1029 sc->light_cmd_on = 1;
1030 sc->light_cmd_off = 0;
1031 } else
1032 sc->light_handle = NULL;
1033
1034 sc->light_set_supported = (sc->light_handle &&
1035 ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
1036
1037 if (sc->light_get_supported)
1038 return (TRUE);
1039
1040 if (sc->light_set_supported) {
1041 sc->light_val = 0;
1042 return (TRUE);
1043 }
1044
1045 return (FALSE);
1046
1047 case ACPI_IBM_METHOD_BLUETOOTH:
1048 case ACPI_IBM_METHOD_WLAN:
1049 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
1050 return (TRUE);
1051 return (FALSE);
1052
1053 case ACPI_IBM_METHOD_FANSPEED:
1054 /*
1055 * Some models report the fan speed in levels from 0-7
1056 * Newer models report it contiguously
1057 */
1058 sc->fan_levels =
1059 (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
1060 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
1061 return (TRUE);
1062
1063 case ACPI_IBM_METHOD_FANLEVEL:
1064 case ACPI_IBM_METHOD_FANSTATUS:
1065 /*
1066 * Fan status is only supported on those models,
1067 * which report fan RPM contiguously, not in levels
1068 */
1069 if (sc->fan_levels)
1070 return (FALSE);
1071 return (TRUE);
1072
1073 case ACPI_IBM_METHOD_THERMAL:
1074 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
1075 sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
1076 return (TRUE);
1077 }
1078 return (FALSE);
1079
1080 case ACPI_IBM_METHOD_HANDLEREVENTS:
1081 return (TRUE);
1082
1083 case ACPI_IBM_METHOD_PRIVACYGUARD:
1084 return (acpi_ibm_privacyguard_get(sc) != -1);
1085 }
1086 return (FALSE);
1087 }
1088
1089 static int
acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)1090 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
1091 {
1092 struct acpi_ibm_softc *sc;
1093 int error = 0;
1094 char temp_cmd[] = "TMP0";
1095 int temp[8];
1096
1097 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1098
1099 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1100
1101 ACPI_SERIAL_BEGIN(ibm);
1102
1103 for (int i = 0; i < 8; ++i) {
1104 temp_cmd[3] = '0' + i;
1105
1106 /*
1107 * The TMPx methods seem to return +/- 128 or 0
1108 * when the respecting sensor is not available
1109 */
1110 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
1111 &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
1112 temp[i] = -1;
1113 else if (sc->thermal_updt_supported)
1114 /* Temperature is reported in tenth of Kelvin */
1115 temp[i] = (temp[i] - 2731 + 5) / 10;
1116 }
1117
1118 error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
1119
1120 ACPI_SERIAL_END(ibm);
1121 return (error);
1122 }
1123
1124 static int
acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)1125 acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)
1126 {
1127 struct acpi_ibm_softc *sc;
1128 int error = 0;
1129 struct sbuf sb;
1130 char *cp, *ep;
1131 int l, val;
1132 unsigned int handler_events;
1133 char temp[128];
1134
1135 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1136
1137 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1138
1139 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
1140 return (ENOMEM);
1141
1142 ACPI_SERIAL_BEGIN(ibm);
1143
1144 /* Get old values if this is a get request. */
1145 if (req->newptr == NULL) {
1146 for (int i = 0; i < 8 * sizeof(sc->handler_events); i++)
1147 if (sc->handler_events & (1 << i))
1148 sbuf_printf(&sb, "0x%02x ", i + 1);
1149 if (sbuf_len(&sb) == 0)
1150 sbuf_printf(&sb, "NONE");
1151 }
1152
1153 sbuf_trim(&sb);
1154 sbuf_finish(&sb);
1155 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
1156 sbuf_delete(&sb);
1157
1158 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
1159
1160 /* Check for error or no change */
1161 if (error != 0 || req->newptr == NULL)
1162 goto out;
1163
1164 /* If the user is setting a string, parse it. */
1165 handler_events = 0;
1166 cp = temp;
1167 while (*cp) {
1168 if (isspace(*cp)) {
1169 cp++;
1170 continue;
1171 }
1172
1173 ep = cp;
1174
1175 while (*ep && !isspace(*ep))
1176 ep++;
1177
1178 l = ep - cp;
1179 if (l == 0)
1180 break;
1181
1182 if (strncmp(cp, "NONE", 4) == 0) {
1183 cp = ep;
1184 continue;
1185 }
1186
1187 if (l >= 3 && cp[0] == '0' && (cp[1] == 'X' || cp[1] == 'x'))
1188 val = strtoul(cp, &ep, 16);
1189 else
1190 val = strtoul(cp, &ep, 10);
1191
1192 if (val == 0 || ep == cp || val >= 8 * sizeof(handler_events)) {
1193 cp[l] = '\0';
1194 device_printf(sc->dev, "invalid event code: %s\n", cp);
1195 error = EINVAL;
1196 goto out;
1197 }
1198
1199 handler_events |= 1 << (val - 1);
1200
1201 cp = ep;
1202 }
1203
1204 sc->handler_events = handler_events;
1205 out:
1206 ACPI_SERIAL_END(ibm);
1207 return (error);
1208 }
1209
1210 static int
acpi_ibm_brightness_set(struct acpi_ibm_softc * sc,int arg)1211 acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg)
1212 {
1213 int val, step;
1214 UINT64 val_ec;
1215 ACPI_OBJECT Arg;
1216 ACPI_OBJECT_LIST Args;
1217 ACPI_STATUS status;
1218
1219 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1220 ACPI_SERIAL_ASSERT(ibm);
1221
1222 if (arg < 0 || arg > 7)
1223 return (EINVAL);
1224
1225 /* Read the current brightness */
1226 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
1227 if (ACPI_FAILURE(status))
1228 return (status);
1229
1230 if (sc->cmos_handle) {
1231 val = val_ec & IBM_EC_MASK_BRI;
1232
1233 Args.Count = 1;
1234 Args.Pointer = &Arg;
1235 Arg.Type = ACPI_TYPE_INTEGER;
1236 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP :
1237 IBM_CMOS_BRIGHTNESS_DOWN;
1238
1239 step = (arg > val) ? 1 : -1;
1240 for (int i = val; i != arg; i += step) {
1241 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1242 &Args, NULL);
1243 if (ACPI_FAILURE(status)) {
1244 /* Record the last value */
1245 if (i != val) {
1246 ACPI_EC_WRITE(sc->ec_dev,
1247 IBM_EC_BRIGHTNESS, i - step, 1);
1248 }
1249 return (status);
1250 }
1251 }
1252 }
1253
1254 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
1255 }
1256
1257 static int
acpi_ibm_bluetooth_set(struct acpi_ibm_softc * sc,int arg)1258 acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg)
1259 {
1260 int val;
1261
1262 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1263 ACPI_SERIAL_ASSERT(ibm);
1264
1265 if (arg < 0 || arg > 1)
1266 return (EINVAL);
1267
1268 val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT :
1269 sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
1270 return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
1271 }
1272
1273 static int
acpi_ibm_thinklight_set(struct acpi_ibm_softc * sc,int arg)1274 acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg)
1275 {
1276 ACPI_OBJECT Arg;
1277 ACPI_OBJECT_LIST Args;
1278 ACPI_STATUS status;
1279
1280 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1281 ACPI_SERIAL_ASSERT(ibm);
1282
1283 if (arg < 0 || arg > 1)
1284 return (EINVAL);
1285
1286 if (sc->light_set_supported) {
1287 Args.Count = 1;
1288 Args.Pointer = &Arg;
1289 Arg.Type = ACPI_TYPE_INTEGER;
1290 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
1291
1292 status = AcpiEvaluateObject(sc->light_handle, NULL,
1293 &Args, NULL);
1294 if (ACPI_SUCCESS(status))
1295 sc->light_val = arg;
1296 return (status);
1297 }
1298
1299 return (0);
1300 }
1301
1302 /*
1303 * Helper function to make a get or set ACPI call to the PrivacyGuard handle.
1304 * Only meant to be used internally by the get/set functions below.
1305 */
1306 static ACPI_STATUS
acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc * sc,bool write,int * arg)1307 acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg)
1308 {
1309 ACPI_OBJECT Arg;
1310 ACPI_OBJECT_LIST Args;
1311 ACPI_STATUS status;
1312 ACPI_OBJECT out_obj;
1313 ACPI_BUFFER result;
1314
1315 Arg.Type = ACPI_TYPE_INTEGER;
1316 Arg.Integer.Value = (write ? *arg : 0);
1317 Args.Count = 1;
1318 Args.Pointer = &Arg;
1319 result.Length = sizeof(out_obj);
1320 result.Pointer = &out_obj;
1321
1322 status = AcpiEvaluateObject(sc->handle,
1323 (write ? IBM_NAME_PRIVACYGUARD_SET : IBM_NAME_PRIVACYGUARD_GET),
1324 &Args, &result);
1325 if (ACPI_SUCCESS(status) && !write)
1326 *arg = out_obj.Integer.Value;
1327
1328 return (status);
1329 }
1330
1331 /*
1332 * Returns -1 if the device is not present.
1333 */
1334 static int
acpi_ibm_privacyguard_get(struct acpi_ibm_softc * sc)1335 acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc)
1336 {
1337 ACPI_STATUS status;
1338 int val;
1339
1340 status = acpi_ibm_privacyguard_acpi_call(sc, false, &val);
1341 if (ACPI_SUCCESS(status) &&
1342 (val & IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT))
1343 return (val & IBM_FLAG_PRIVACYGUARD_ON);
1344
1345 return (-1);
1346 }
1347
1348 static ACPI_STATUS
acpi_ibm_privacyguard_set(struct acpi_ibm_softc * sc,int arg)1349 acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg)
1350 {
1351 if (arg < 0 || arg > 1)
1352 return (AE_BAD_PARAMETER);
1353
1354 return (acpi_ibm_privacyguard_acpi_call(sc, true, &arg));
1355 }
1356
1357 static int
acpi_ibm_volume_set(struct acpi_ibm_softc * sc,int arg)1358 acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
1359 {
1360 int val, step;
1361 UINT64 val_ec;
1362 ACPI_OBJECT Arg;
1363 ACPI_OBJECT_LIST Args;
1364 ACPI_STATUS status;
1365
1366 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1367 ACPI_SERIAL_ASSERT(ibm);
1368
1369 if (arg < 0 || arg > 14)
1370 return (EINVAL);
1371
1372 /* Read the current volume */
1373 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1374 if (ACPI_FAILURE(status))
1375 return (status);
1376
1377 if (sc->cmos_handle) {
1378 val = val_ec & IBM_EC_MASK_VOL;
1379
1380 Args.Count = 1;
1381 Args.Pointer = &Arg;
1382 Arg.Type = ACPI_TYPE_INTEGER;
1383 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP :
1384 IBM_CMOS_VOLUME_DOWN;
1385
1386 step = (arg > val) ? 1 : -1;
1387 for (int i = val; i != arg; i += step) {
1388 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1389 &Args, NULL);
1390 if (ACPI_FAILURE(status)) {
1391 /* Record the last value */
1392 if (i != val) {
1393 val_ec = i - step +
1394 (val_ec & (~IBM_EC_MASK_VOL));
1395 ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME,
1396 val_ec, 1);
1397 }
1398 return (status);
1399 }
1400 }
1401 }
1402
1403 val_ec = arg + (val_ec & (~IBM_EC_MASK_VOL));
1404 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1405 }
1406
1407 static int
acpi_ibm_mute_set(struct acpi_ibm_softc * sc,int arg)1408 acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg)
1409 {
1410 UINT64 val_ec;
1411 ACPI_OBJECT Arg;
1412 ACPI_OBJECT_LIST Args;
1413 ACPI_STATUS status;
1414
1415 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1416 ACPI_SERIAL_ASSERT(ibm);
1417
1418 if (arg < 0 || arg > 1)
1419 return (EINVAL);
1420
1421 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1422 if (ACPI_FAILURE(status))
1423 return (status);
1424
1425 if (sc->cmos_handle) {
1426 Args.Count = 1;
1427 Args.Pointer = &Arg;
1428 Arg.Type = ACPI_TYPE_INTEGER;
1429 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
1430
1431 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
1432 if (ACPI_FAILURE(status))
1433 return (status);
1434 }
1435
1436 val_ec = (arg == 1) ? val_ec | IBM_EC_MASK_MUTE :
1437 val_ec & (~IBM_EC_MASK_MUTE);
1438 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1439 }
1440
1441 static void
acpi_ibm_eventhandler(struct acpi_ibm_softc * sc,int arg)1442 acpi_ibm_eventhandler(struct acpi_ibm_softc *sc, int arg)
1443 {
1444 int val;
1445 UINT64 val_ec;
1446 ACPI_STATUS status;
1447
1448 ACPI_SERIAL_BEGIN(ibm);
1449 switch (arg) {
1450 case IBM_EVENT_SUSPEND_TO_RAM:
1451 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
1452 break;
1453
1454 case IBM_EVENT_BLUETOOTH:
1455 acpi_ibm_bluetooth_set(sc, (sc->wlan_bt_flags == 0));
1456 break;
1457
1458 case IBM_EVENT_BRIGHTNESS_UP:
1459 case IBM_EVENT_BRIGHTNESS_DOWN:
1460 /* Read the current brightness */
1461 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS,
1462 &val_ec, 1);
1463 if (ACPI_FAILURE(status))
1464 return;
1465
1466 val = val_ec & IBM_EC_MASK_BRI;
1467 val = (arg == IBM_EVENT_BRIGHTNESS_UP) ? val + 1 : val - 1;
1468 acpi_ibm_brightness_set(sc, val);
1469 break;
1470
1471 case IBM_EVENT_THINKLIGHT:
1472 acpi_ibm_thinklight_set(sc, (sc->light_val == 0));
1473 break;
1474
1475 case IBM_EVENT_VOLUME_UP:
1476 case IBM_EVENT_VOLUME_DOWN:
1477 /* Read the current volume */
1478 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1479 if (ACPI_FAILURE(status))
1480 return;
1481
1482 val = val_ec & IBM_EC_MASK_VOL;
1483 val = (arg == IBM_EVENT_VOLUME_UP) ? val + 1 : val - 1;
1484 acpi_ibm_volume_set(sc, val);
1485 break;
1486
1487 case IBM_EVENT_MUTE:
1488 /* Read the current value */
1489 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1490 if (ACPI_FAILURE(status))
1491 return;
1492
1493 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
1494 acpi_ibm_mute_set(sc, (val == 0));
1495 break;
1496
1497 default:
1498 break;
1499 }
1500 ACPI_SERIAL_END(ibm);
1501 }
1502
1503 static void
acpi_ibm_notify(ACPI_HANDLE h,UINT32 notify,void * context)1504 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
1505 {
1506 int event, arg, type;
1507 device_t dev = context;
1508 struct acpi_ibm_softc *sc = device_get_softc(dev);
1509
1510 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
1511
1512 if (notify != 0x80)
1513 device_printf(dev, "Unknown notify\n");
1514
1515 for (;;) {
1516 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
1517 if (event == 0)
1518 break;
1519
1520 type = (event >> 12) & 0xf;
1521 arg = event & 0xfff;
1522 switch (type) {
1523 case 1:
1524 if (!(sc->events_availmask & (1 << (arg - 1)))) {
1525 device_printf(dev, "Unknown key %d\n", arg);
1526 break;
1527 }
1528
1529 /* Execute event handler */
1530 if (sc->handler_events & (1 << (arg - 1)))
1531 acpi_ibm_eventhandler(sc, (arg & 0xff));
1532 #ifdef EVDEV_SUPPORT
1533 else if ((arg & 0xff) == IBM_EVENT_BRIGHTNESS_UP ||
1534 (arg & 0xff) == IBM_EVENT_BRIGHTNESS_DOWN) {
1535 uint16_t key;
1536
1537 key = arg == IBM_EVENT_BRIGHTNESS_UP ?
1538 KEY_BRIGHTNESSUP : KEY_BRIGHTNESSDOWN;
1539 evdev_push_key(sc->evdev, key, 1);
1540 evdev_sync(sc->evdev);
1541 evdev_push_key(sc->evdev, key, 0);
1542 evdev_sync(sc->evdev);
1543 }
1544 #endif
1545
1546 /* Notify devd(8) */
1547 acpi_UserNotify("IBM", h, (arg & 0xff));
1548 break;
1549 default:
1550 break;
1551 }
1552 }
1553 }
1554