1 /*-
2 * Copyright (c) 2004 Takanori Watanabe
3 * Copyright (c) 2005 Markus Brueffer <[email protected]>
4 * All rights reserved.
5 * Copyright (c) 2020 Ali Abdallah <[email protected]>
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 __FBSDID("$FreeBSD$");
31
32 /*
33 * Driver for extra ACPI-controlled gadgets found on ThinkPad laptops.
34 * Inspired by the ibm-acpi and tpb projects which implement these features
35 * on Linux.
36 *
37 * acpi-ibm: <http://ibm-acpi.sourceforge.net/>
38 * tpb: <http://www.nongnu.org/tpb/>
39 */
40
41 #include "opt_acpi.h"
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/bus.h>
46 #include <machine/cpufunc.h>
47
48 #include <contrib/dev/acpica/include/acpi.h>
49 #include <contrib/dev/acpica/include/accommon.h>
50
51 #include "acpi_if.h"
52 #include <sys/module.h>
53 #include <dev/acpica/acpivar.h>
54 #include <dev/led/led.h>
55 #include <sys/power.h>
56 #include <sys/sbuf.h>
57 #include <sys/sysctl.h>
58 #include <isa/rtc.h>
59
60 #define _COMPONENT ACPI_OEM
61 ACPI_MODULE_NAME("IBM")
62
63 /* Internal methods */
64 #define ACPI_IBM_METHOD_EVENTS 1
65 #define ACPI_IBM_METHOD_EVENTMASK 2
66 #define ACPI_IBM_METHOD_HOTKEY 3
67 #define ACPI_IBM_METHOD_BRIGHTNESS 4
68 #define ACPI_IBM_METHOD_VOLUME 5
69 #define ACPI_IBM_METHOD_MUTE 6
70 #define ACPI_IBM_METHOD_THINKLIGHT 7
71 #define ACPI_IBM_METHOD_BLUETOOTH 8
72 #define ACPI_IBM_METHOD_WLAN 9
73 #define ACPI_IBM_METHOD_FANSPEED 10
74 #define ACPI_IBM_METHOD_FANLEVEL 11
75 #define ACPI_IBM_METHOD_FANSTATUS 12
76 #define ACPI_IBM_METHOD_THERMAL 13
77 #define ACPI_IBM_METHOD_HANDLEREVENTS 14
78 #define ACPI_IBM_METHOD_MIC_LED 15
79 #define ACPI_IBM_METHOD_PRIVACYGUARD 16
80
81 /* Hotkeys/Buttons */
82 #define IBM_RTC_HOTKEY1 0x64
83 #define IBM_RTC_MASK_HOME (1 << 0)
84 #define IBM_RTC_MASK_SEARCH (1 << 1)
85 #define IBM_RTC_MASK_MAIL (1 << 2)
86 #define IBM_RTC_MASK_WLAN (1 << 5)
87 #define IBM_RTC_HOTKEY2 0x65
88 #define IBM_RTC_MASK_THINKPAD (1 << 3)
89 #define IBM_RTC_MASK_ZOOM (1 << 5)
90 #define IBM_RTC_MASK_VIDEO (1 << 6)
91 #define IBM_RTC_MASK_HIBERNATE (1 << 7)
92 #define IBM_RTC_THINKLIGHT 0x66
93 #define IBM_RTC_MASK_THINKLIGHT (1 << 4)
94 #define IBM_RTC_SCREENEXPAND 0x67
95 #define IBM_RTC_MASK_SCREENEXPAND (1 << 5)
96 #define IBM_RTC_BRIGHTNESS 0x6c
97 #define IBM_RTC_MASK_BRIGHTNESS (1 << 5)
98 #define IBM_RTC_VOLUME 0x6e
99 #define IBM_RTC_MASK_VOLUME (1 << 7)
100
101 /* Embedded Controller registers */
102 #define IBM_EC_BRIGHTNESS 0x31
103 #define IBM_EC_MASK_BRI 0x7
104 #define IBM_EC_VOLUME 0x30
105 #define IBM_EC_MASK_VOL 0xf
106 #define IBM_EC_MASK_MUTE (1 << 6)
107 #define IBM_EC_FANSTATUS 0x2F
108 #define IBM_EC_MASK_FANLEVEL 0x3f
109 #define IBM_EC_MASK_FANUNTHROTTLED (1 << 6)
110 #define IBM_EC_MASK_FANSTATUS (1 << 7)
111 #define IBM_EC_FANSPEED 0x84
112
113 /* CMOS Commands */
114 #define IBM_CMOS_VOLUME_DOWN 0
115 #define IBM_CMOS_VOLUME_UP 1
116 #define IBM_CMOS_VOLUME_MUTE 2
117 #define IBM_CMOS_BRIGHTNESS_UP 4
118 #define IBM_CMOS_BRIGHTNESS_DOWN 5
119
120 /* ACPI methods */
121 #define IBM_NAME_KEYLIGHT "KBLT"
122 #define IBM_NAME_WLAN_BT_GET "GBDC"
123 #define IBM_NAME_WLAN_BT_SET "SBDC"
124 #define IBM_NAME_MASK_BT (1 << 1)
125 #define IBM_NAME_MASK_WLAN (1 << 2)
126 #define IBM_NAME_THERMAL_GET "TMP7"
127 #define IBM_NAME_THERMAL_UPDT "UPDT"
128 #define IBM_NAME_PRIVACYGUARD_GET "GSSS"
129 #define IBM_NAME_PRIVACYGUARD_SET "SSSS"
130
131 #define IBM_NAME_EVENTS_STATUS_GET "DHKC"
132 #define IBM_NAME_EVENTS_MASK_GET "DHKN"
133 #define IBM_NAME_EVENTS_STATUS_SET "MHKC"
134 #define IBM_NAME_EVENTS_MASK_SET "MHKM"
135 #define IBM_NAME_EVENTS_GET "MHKP"
136 #define IBM_NAME_EVENTS_AVAILMASK "MHKA"
137
138 /* Event Code */
139 #define IBM_EVENT_LCD_BACKLIGHT 0x03
140 #define IBM_EVENT_SUSPEND_TO_RAM 0x04
141 #define IBM_EVENT_BLUETOOTH 0x05
142 #define IBM_EVENT_SCREEN_EXPAND 0x07
143 #define IBM_EVENT_SUSPEND_TO_DISK 0x0c
144 #define IBM_EVENT_BRIGHTNESS_UP 0x10
145 #define IBM_EVENT_BRIGHTNESS_DOWN 0x11
146 #define IBM_EVENT_THINKLIGHT 0x12
147 #define IBM_EVENT_ZOOM 0x14
148 #define IBM_EVENT_VOLUME_UP 0x15
149 #define IBM_EVENT_VOLUME_DOWN 0x16
150 #define IBM_EVENT_MUTE 0x17
151 #define IBM_EVENT_ACCESS_IBM_BUTTON 0x18
152
153 /* Device-specific register flags */
154 #define IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT 0x10000
155 #define IBM_FLAG_PRIVACYGUARD_ON 0x1
156
157 #define ABS(x) (((x) < 0)? -(x) : (x))
158
159 struct acpi_ibm_softc {
160 device_t dev;
161 ACPI_HANDLE handle;
162
163 /* Embedded controller */
164 device_t ec_dev;
165 ACPI_HANDLE ec_handle;
166
167 /* CMOS */
168 ACPI_HANDLE cmos_handle;
169
170 /* Fan status */
171 ACPI_HANDLE fan_handle;
172 int fan_levels;
173
174 /* Keylight commands and states */
175 ACPI_HANDLE light_handle;
176 int light_cmd_on;
177 int light_cmd_off;
178 int light_val;
179 int light_get_supported;
180 int light_set_supported;
181
182 /* led(4) interface */
183 struct cdev *led_dev;
184 int led_busy;
185 int led_state;
186
187 /* Mic led handle */
188 ACPI_HANDLE mic_led_handle;
189 int mic_led_state;
190
191 int wlan_bt_flags;
192 int thermal_updt_supported;
193
194 unsigned int events_availmask;
195 unsigned int events_initialmask;
196 int events_mask_supported;
197 int events_enable;
198
199 unsigned int handler_events;
200
201 struct sysctl_ctx_list *sysctl_ctx;
202 struct sysctl_oid *sysctl_tree;
203 };
204
205 static struct {
206 char *name;
207 int method;
208 char *description;
209 int flag_rdonly;
210 } acpi_ibm_sysctls[] = {
211 {
212 .name = "events",
213 .method = ACPI_IBM_METHOD_EVENTS,
214 .description = "ACPI events enable",
215 },
216 {
217 .name = "eventmask",
218 .method = ACPI_IBM_METHOD_EVENTMASK,
219 .description = "ACPI eventmask",
220 },
221 {
222 .name = "hotkey",
223 .method = ACPI_IBM_METHOD_HOTKEY,
224 .description = "Key Status",
225 .flag_rdonly = 1
226 },
227 {
228 .name = "lcd_brightness",
229 .method = ACPI_IBM_METHOD_BRIGHTNESS,
230 .description = "LCD Brightness",
231 },
232 {
233 .name = "volume",
234 .method = ACPI_IBM_METHOD_VOLUME,
235 .description = "Volume",
236 },
237 {
238 .name = "mute",
239 .method = ACPI_IBM_METHOD_MUTE,
240 .description = "Mute",
241 },
242 {
243 .name = "thinklight",
244 .method = ACPI_IBM_METHOD_THINKLIGHT,
245 .description = "Thinklight enable",
246 },
247 {
248 .name = "bluetooth",
249 .method = ACPI_IBM_METHOD_BLUETOOTH,
250 .description = "Bluetooth enable",
251 },
252 {
253 .name = "wlan",
254 .method = ACPI_IBM_METHOD_WLAN,
255 .description = "WLAN enable",
256 .flag_rdonly = 1
257 },
258 {
259 .name = "fan_speed",
260 .method = ACPI_IBM_METHOD_FANSPEED,
261 .description = "Fan speed",
262 .flag_rdonly = 1
263 },
264 {
265 .name = "fan_level",
266 .method = ACPI_IBM_METHOD_FANLEVEL,
267 .description = "Fan level, 0-7 (recommended max), "
268 "8 (unthrottled, full-speed)",
269 },
270 {
271 .name = "fan",
272 .method = ACPI_IBM_METHOD_FANSTATUS,
273 .description = "Fan enable",
274 },
275 {
276 .name = "mic_led",
277 .method = ACPI_IBM_METHOD_MIC_LED,
278 .description = "Mic led",
279 },
280 {
281 .name = "privacyguard",
282 .method = ACPI_IBM_METHOD_PRIVACYGUARD,
283 .description = "PrivacyGuard enable",
284 },
285 { NULL, 0, NULL, 0 }
286 };
287
288 /*
289 * Per-model default list of event mask.
290 */
291 #define ACPI_IBM_HKEY_RFKILL_MASK (1 << 4)
292 #define ACPI_IBM_HKEY_DSWITCH_MASK (1 << 6)
293 #define ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK (1 << 15)
294 #define ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK (1 << 16)
295 #define ACPI_IBM_HKEY_SEARCH_MASK (1 << 18)
296 #define ACPI_IBM_HKEY_MICMUTE_MASK (1 << 26)
297 #define ACPI_IBM_HKEY_SETTINGS_MASK (1 << 28)
298 #define ACPI_IBM_HKEY_VIEWOPEN_MASK (1 << 30)
299 #define ACPI_IBM_HKEY_VIEWALL_MASK (1 << 31)
300
301 struct acpi_ibm_models {
302 const char *maker;
303 const char *product;
304 uint32_t eventmask;
305 } acpi_ibm_models[] = {
306 { "LENOVO", "20BSCTO1WW",
307 ACPI_IBM_HKEY_RFKILL_MASK |
308 ACPI_IBM_HKEY_DSWITCH_MASK |
309 ACPI_IBM_HKEY_BRIGHTNESS_UP_MASK |
310 ACPI_IBM_HKEY_BRIGHTNESS_DOWN_MASK |
311 ACPI_IBM_HKEY_SEARCH_MASK |
312 ACPI_IBM_HKEY_MICMUTE_MASK |
313 ACPI_IBM_HKEY_SETTINGS_MASK |
314 ACPI_IBM_HKEY_VIEWOPEN_MASK |
315 ACPI_IBM_HKEY_VIEWALL_MASK
316 }
317 };
318
319 ACPI_SERIAL_DECL(ibm, "ThinkPad ACPI Extras");
320
321 static int acpi_ibm_probe(device_t dev);
322 static int acpi_ibm_attach(device_t dev);
323 static int acpi_ibm_detach(device_t dev);
324 static int acpi_ibm_resume(device_t dev);
325
326 static void ibm_led(void *softc, int onoff);
327 static void ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
328
329 static int acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS);
330 static int acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method);
331 static int acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method);
332 static int acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int val);
333
334 static int acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val);
335 static int acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS);
336 static int acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS);
337 static void acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context);
338
339 static int acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg);
340 static int acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg);
341 static int acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg);
342 static int acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg);
343 static int acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg);
344 static int acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc);
345 static ACPI_STATUS acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg);
346 static ACPI_STATUS acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg);
347
348 static int acpi_status_to_errno(ACPI_STATUS status);
349
350 static device_method_t acpi_ibm_methods[] = {
351 /* Device interface */
352 DEVMETHOD(device_probe, acpi_ibm_probe),
353 DEVMETHOD(device_attach, acpi_ibm_attach),
354 DEVMETHOD(device_detach, acpi_ibm_detach),
355 DEVMETHOD(device_resume, acpi_ibm_resume),
356
357 DEVMETHOD_END
358 };
359
360 static driver_t acpi_ibm_driver = {
361 "acpi_ibm",
362 acpi_ibm_methods,
363 sizeof(struct acpi_ibm_softc),
364 };
365
366 static devclass_t acpi_ibm_devclass;
367
368 DRIVER_MODULE(acpi_ibm, acpi, acpi_ibm_driver, acpi_ibm_devclass, 0, 0);
369 MODULE_DEPEND(acpi_ibm, acpi, 1, 1, 1);
370 static char *ibm_ids[] = {"IBM0068", "LEN0068", "LEN0268", NULL};
371
372 static int
acpi_status_to_errno(ACPI_STATUS status)373 acpi_status_to_errno(ACPI_STATUS status)
374 {
375 switch (status) {
376 case AE_OK:
377 return (0);
378 case AE_BAD_PARAMETER:
379 return (EINVAL);
380 default:
381 return (ENODEV);
382 }
383 }
384
385 static void
ibm_led(void * softc,int onoff)386 ibm_led(void *softc, int onoff)
387 {
388 struct acpi_ibm_softc *sc = softc;
389
390 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
391
392 if (sc->led_busy)
393 return;
394
395 sc->led_busy = 1;
396 sc->led_state = onoff;
397
398 AcpiOsExecute(OSL_NOTIFY_HANDLER, (void *)ibm_led_task, sc);
399 }
400
401 static void
ibm_led_task(struct acpi_ibm_softc * sc,int pending __unused)402 ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused)
403 {
404 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
405
406 ACPI_SERIAL_BEGIN(ibm);
407 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_THINKLIGHT, sc->led_state);
408 ACPI_SERIAL_END(ibm);
409
410 sc->led_busy = 0;
411 }
412
413 static int
acpi_ibm_mic_led_set(struct acpi_ibm_softc * sc,int arg)414 acpi_ibm_mic_led_set(struct acpi_ibm_softc *sc, int arg)
415 {
416 ACPI_OBJECT_LIST input;
417 ACPI_OBJECT params[1];
418 ACPI_STATUS status;
419
420 if (arg < 0 || arg > 1)
421 return (EINVAL);
422
423 if (sc->mic_led_handle) {
424 params[0].Type = ACPI_TYPE_INTEGER;
425 params[0].Integer.Value = 0;
426 /* mic led: 0 off, 2 on */
427 if (arg == 1)
428 params[0].Integer.Value = 2;
429
430 input.Pointer = params;
431 input.Count = 1;
432
433 status = AcpiEvaluateObject(sc->handle, "MMTS", &input, NULL);
434 if (ACPI_SUCCESS(status))
435 sc->mic_led_state = arg;
436 return (status);
437 }
438
439 return (0);
440 }
441
442 static int
acpi_ibm_probe(device_t dev)443 acpi_ibm_probe(device_t dev)
444 {
445 int rv;
446
447 if (acpi_disabled("ibm") || device_get_unit(dev) != 0)
448 return (ENXIO);
449 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids, NULL);
450
451 if (rv <= 0)
452 device_set_desc(dev, "ThinkPad ACPI Extras");
453
454 return (rv);
455 }
456
457 static int
acpi_ibm_attach(device_t dev)458 acpi_ibm_attach(device_t dev)
459 {
460 int i;
461 int hkey;
462 struct acpi_ibm_softc *sc;
463 char *maker, *product;
464 ACPI_OBJECT_LIST input;
465 ACPI_OBJECT params[1];
466 ACPI_OBJECT out_obj;
467 ACPI_BUFFER result;
468 devclass_t ec_devclass;
469
470 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
471
472 sc = device_get_softc(dev);
473 sc->dev = dev;
474 sc->handle = acpi_get_handle(dev);
475
476 /* Look for the first embedded controller */
477 if (!(ec_devclass = devclass_find ("acpi_ec"))) {
478 if (bootverbose)
479 device_printf(dev, "Couldn't find acpi_ec devclass\n");
480 return (EINVAL);
481 }
482 if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
483 if (bootverbose)
484 device_printf(dev, "Couldn't find acpi_ec device\n");
485 return (EINVAL);
486 }
487 sc->ec_handle = acpi_get_handle(sc->ec_dev);
488
489 /* Get the sysctl tree */
490 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
491 sc->sysctl_tree = device_get_sysctl_tree(dev);
492
493 /* Look for event mask and hook up the nodes */
494 sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
495 IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
496
497 if (sc->events_mask_supported) {
498 SYSCTL_ADD_UINT(sc->sysctl_ctx,
499 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "initialmask",
500 CTLFLAG_RD, &sc->events_initialmask, 0,
501 "Initial eventmask");
502
503 if (ACPI_SUCCESS (acpi_GetInteger(sc->handle, "MHKV", &hkey))) {
504 device_printf(dev, "Firmware version is 0x%X\n", hkey);
505 switch (hkey >> 8) {
506 case 1:
507 /* The availmask is the bitmask of supported events */
508 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
509 IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
510 sc->events_availmask = 0xffffffff;
511 break;
512
513 case 2:
514 result.Length = sizeof(out_obj);
515 result.Pointer = &out_obj;
516 params[0].Type = ACPI_TYPE_INTEGER;
517 params[0].Integer.Value = 1;
518 input.Pointer = params;
519 input.Count = 1;
520
521 sc->events_availmask = 0xffffffff;
522
523 if (ACPI_SUCCESS(AcpiEvaluateObject (sc->handle,
524 IBM_NAME_EVENTS_AVAILMASK, &input, &result)))
525 sc->events_availmask = out_obj.Integer.Value;
526 break;
527 default:
528 device_printf(dev, "Unknown firmware version 0x%x\n", hkey);
529 break;
530 }
531 } else
532 sc->events_availmask = 0xffffffff;
533
534 SYSCTL_ADD_UINT(sc->sysctl_ctx,
535 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
536 "availmask", CTLFLAG_RD,
537 &sc->events_availmask, 0, "Mask of supported events");
538 }
539
540 /* Hook up proc nodes */
541 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
542 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
543 continue;
544
545 if (acpi_ibm_sysctls[i].flag_rdonly != 0) {
546 SYSCTL_ADD_PROC(sc->sysctl_ctx,
547 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
548 acpi_ibm_sysctls[i].name,
549 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
550 sc, i, acpi_ibm_sysctl, "I",
551 acpi_ibm_sysctls[i].description);
552 } else {
553 SYSCTL_ADD_PROC(sc->sysctl_ctx,
554 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
555 acpi_ibm_sysctls[i].name,
556 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
557 sc, i, acpi_ibm_sysctl, "I",
558 acpi_ibm_sysctls[i].description);
559 }
560 }
561
562 /* Hook up thermal node */
563 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
564 SYSCTL_ADD_PROC(sc->sysctl_ctx,
565 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "thermal",
566 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0,
567 acpi_ibm_thermal_sysctl, "I", "Thermal zones");
568 }
569
570 /* Hook up handlerevents node */
571 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_HANDLEREVENTS)) {
572 SYSCTL_ADD_PROC(sc->sysctl_ctx,
573 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "handlerevents",
574 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0,
575 acpi_ibm_handlerevents_sysctl, "I",
576 "devd(8) events handled by acpi_ibm");
577 }
578
579 /* Handle notifies */
580 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
581 acpi_ibm_notify, dev);
582
583 /* Hook up light to led(4) */
584 if (sc->light_set_supported)
585 sc->led_dev = led_create_state(ibm_led, sc, "thinklight",
586 (sc->light_val ? 1 : 0));
587
588 /* Enable per-model events. */
589 maker = kern_getenv("smbios.system.maker");
590 product = kern_getenv("smbios.system.product");
591 if (maker == NULL || product == NULL)
592 goto nosmbios;
593
594 for (i = 0; i < nitems(acpi_ibm_models); i++) {
595 if (strcmp(maker, acpi_ibm_models[i].maker) == 0 &&
596 strcmp(product, acpi_ibm_models[i].product) == 0) {
597 ACPI_SERIAL_BEGIN(ibm);
598 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK,
599 acpi_ibm_models[i].eventmask);
600 ACPI_SERIAL_END(ibm);
601 }
602 }
603
604 nosmbios:
605 freeenv(maker);
606 freeenv(product);
607
608 /* Enable events by default. */
609 ACPI_SERIAL_BEGIN(ibm);
610 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 1);
611 ACPI_SERIAL_END(ibm);
612
613 return (0);
614 }
615
616 static int
acpi_ibm_detach(device_t dev)617 acpi_ibm_detach(device_t dev)
618 {
619 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
620
621 struct acpi_ibm_softc *sc = device_get_softc(dev);
622
623 /* Disable events and restore eventmask */
624 ACPI_SERIAL_BEGIN(ibm);
625 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
626 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
627 ACPI_SERIAL_END(ibm);
628
629 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
630
631 if (sc->led_dev != NULL)
632 led_destroy(sc->led_dev);
633
634 return (0);
635 }
636
637 static int
acpi_ibm_resume(device_t dev)638 acpi_ibm_resume(device_t dev)
639 {
640 struct acpi_ibm_softc *sc = device_get_softc(dev);
641
642 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
643
644 ACPI_SERIAL_BEGIN(ibm);
645 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
646 int val;
647
648 val = acpi_ibm_sysctl_get(sc, i);
649
650 if (acpi_ibm_sysctls[i].flag_rdonly != 0)
651 continue;
652
653 acpi_ibm_sysctl_set(sc, i, val);
654 }
655 ACPI_SERIAL_END(ibm);
656
657 /* The mic led does not turn back on when sysctl_set is called in the above loop */
658 acpi_ibm_mic_led_set(sc, sc->mic_led_state);
659
660 return (0);
661 }
662
663 static int
acpi_ibm_eventmask_set(struct acpi_ibm_softc * sc,int val)664 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
665 {
666 ACPI_OBJECT arg[2];
667 ACPI_OBJECT_LIST args;
668 ACPI_STATUS status;
669
670 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
671 ACPI_SERIAL_ASSERT(ibm);
672
673 args.Count = 2;
674 args.Pointer = arg;
675 arg[0].Type = ACPI_TYPE_INTEGER;
676 arg[1].Type = ACPI_TYPE_INTEGER;
677
678 for (int i = 0; i < 32; ++i) {
679 arg[0].Integer.Value = i + 1;
680 arg[1].Integer.Value = (((1 << i) & val) != 0);
681 status = AcpiEvaluateObject(sc->handle,
682 IBM_NAME_EVENTS_MASK_SET, &args, NULL);
683
684 if (ACPI_FAILURE(status))
685 return (status);
686 }
687
688 return (0);
689 }
690
691 static int
acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)692 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
693 {
694 struct acpi_ibm_softc *sc;
695 int arg;
696 int error = 0;
697 int function;
698 int method;
699
700 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
701
702 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
703 function = oidp->oid_arg2;
704 method = acpi_ibm_sysctls[function].method;
705
706 ACPI_SERIAL_BEGIN(ibm);
707 arg = acpi_ibm_sysctl_get(sc, method);
708 error = sysctl_handle_int(oidp, &arg, 0, req);
709
710 /* Sanity check */
711 if (error != 0 || req->newptr == NULL)
712 goto out;
713
714 /* Update */
715 error = acpi_ibm_sysctl_set(sc, method, arg);
716
717 out:
718 ACPI_SERIAL_END(ibm);
719 return (error);
720 }
721
722 static int
acpi_ibm_sysctl_get(struct acpi_ibm_softc * sc,int method)723 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
724 {
725 UINT64 val_ec;
726 int val = 0, key;
727
728 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
729 ACPI_SERIAL_ASSERT(ibm);
730
731 switch (method) {
732 case ACPI_IBM_METHOD_EVENTS:
733 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
734 break;
735
736 case ACPI_IBM_METHOD_EVENTMASK:
737 if (sc->events_mask_supported)
738 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
739 break;
740
741 case ACPI_IBM_METHOD_HOTKEY:
742 /*
743 * Construct the hotkey as a bitmask as illustrated below.
744 * Note that whenever a key was pressed, the respecting bit
745 * toggles and nothing else changes.
746 * +--+--+-+-+-+-+-+-+-+-+-+-+
747 * |11|10|9|8|7|6|5|4|3|2|1|0|
748 * +--+--+-+-+-+-+-+-+-+-+-+-+
749 * | | | | | | | | | | | |
750 * | | | | | | | | | | | +- Home Button
751 * | | | | | | | | | | +--- Search Button
752 * | | | | | | | | | +----- Mail Button
753 * | | | | | | | | +------- Thinkpad Button
754 * | | | | | | | +--------- Zoom (Fn + Space)
755 * | | | | | | +----------- WLAN Button
756 * | | | | | +------------- Video Button
757 * | | | | +--------------- Hibernate Button
758 * | | | +----------------- Thinklight Button
759 * | | +------------------- Screen expand (Fn + F8)
760 * | +--------------------- Brightness
761 * +------------------------ Volume/Mute
762 */
763 key = rtcin(IBM_RTC_HOTKEY1);
764 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
765 key = rtcin(IBM_RTC_HOTKEY2);
766 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
767 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
768 key = rtcin(IBM_RTC_THINKLIGHT);
769 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
770 key = rtcin(IBM_RTC_SCREENEXPAND);
771 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
772 key = rtcin(IBM_RTC_BRIGHTNESS);
773 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
774 key = rtcin(IBM_RTC_VOLUME);
775 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
776 break;
777
778 case ACPI_IBM_METHOD_BRIGHTNESS:
779 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
780 val = val_ec & IBM_EC_MASK_BRI;
781 break;
782
783 case ACPI_IBM_METHOD_VOLUME:
784 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
785 val = val_ec & IBM_EC_MASK_VOL;
786 break;
787
788 case ACPI_IBM_METHOD_MUTE:
789 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
790 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
791 break;
792
793 case ACPI_IBM_METHOD_THINKLIGHT:
794 if (sc->light_get_supported)
795 acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
796 else
797 val = sc->light_val;
798 break;
799
800 case ACPI_IBM_METHOD_BLUETOOTH:
801 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
802 sc->wlan_bt_flags = val;
803 val = ((val & IBM_NAME_MASK_BT) != 0);
804 break;
805
806 case ACPI_IBM_METHOD_WLAN:
807 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
808 sc->wlan_bt_flags = val;
809 val = ((val & IBM_NAME_MASK_WLAN) != 0);
810 break;
811
812 case ACPI_IBM_METHOD_FANSPEED:
813 if (sc->fan_handle) {
814 if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
815 val = -1;
816 } else {
817 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
818 val = val_ec;
819 }
820 break;
821
822 case ACPI_IBM_METHOD_FANLEVEL:
823 /*
824 * The IBM_EC_FANSTATUS register works as follows:
825 * Bit 0-5 indicate the level at which the fan operates. Only
826 * values between 0 and 7 have an effect. Everything
827 * above 7 is treated the same as level 7
828 * Bit 6 overrides the fan speed limit if set to 1
829 * Bit 7 indicates at which mode the fan operates:
830 * manual (0) or automatic (1)
831 */
832 if (!sc->fan_handle) {
833 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
834 if (val_ec & IBM_EC_MASK_FANUNTHROTTLED)
835 val = 8;
836 else
837 val = val_ec & IBM_EC_MASK_FANLEVEL;
838 }
839 break;
840
841 case ACPI_IBM_METHOD_FANSTATUS:
842 if (!sc->fan_handle) {
843 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
844 val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
845 } else
846 val = -1;
847 break;
848
849 case ACPI_IBM_METHOD_MIC_LED:
850 if (sc->mic_led_handle)
851 return sc->mic_led_state;
852 else
853 val = -1;
854 break;
855
856 case ACPI_IBM_METHOD_PRIVACYGUARD:
857 val = acpi_ibm_privacyguard_get(sc);
858 break;
859 }
860
861 return (val);
862 }
863
864 static int
acpi_ibm_sysctl_set(struct acpi_ibm_softc * sc,int method,int arg)865 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
866 {
867 int val;
868 UINT64 val_ec;
869 ACPI_STATUS status;
870
871 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
872 ACPI_SERIAL_ASSERT(ibm);
873
874 switch (method) {
875 case ACPI_IBM_METHOD_EVENTS:
876 if (arg < 0 || arg > 1)
877 return (EINVAL);
878
879 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
880 if (ACPI_FAILURE(status))
881 return (status);
882 if (sc->events_mask_supported)
883 return acpi_ibm_eventmask_set(sc, sc->events_availmask);
884 break;
885
886 case ACPI_IBM_METHOD_EVENTMASK:
887 if (sc->events_mask_supported)
888 return acpi_ibm_eventmask_set(sc, arg);
889 break;
890
891 case ACPI_IBM_METHOD_BRIGHTNESS:
892 return acpi_ibm_brightness_set(sc, arg);
893 break;
894
895 case ACPI_IBM_METHOD_VOLUME:
896 return acpi_ibm_volume_set(sc, arg);
897 break;
898
899 case ACPI_IBM_METHOD_MUTE:
900 return acpi_ibm_mute_set(sc, arg);
901 break;
902
903 case ACPI_IBM_METHOD_MIC_LED:
904 return acpi_ibm_mic_led_set(sc, arg);
905 break;
906
907 case ACPI_IBM_METHOD_THINKLIGHT:
908 return acpi_ibm_thinklight_set(sc, arg);
909 break;
910
911 case ACPI_IBM_METHOD_BLUETOOTH:
912 return acpi_ibm_bluetooth_set(sc, arg);
913 break;
914
915 case ACPI_IBM_METHOD_PRIVACYGUARD:
916 return (acpi_status_to_errno(acpi_ibm_privacyguard_set(sc, arg)));
917 break;
918
919 case ACPI_IBM_METHOD_FANLEVEL:
920 if (arg < 0 || arg > 8)
921 return (EINVAL);
922
923 if (!sc->fan_handle) {
924 /* Read the current fan status. */
925 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
926 val = val_ec & ~(IBM_EC_MASK_FANLEVEL |
927 IBM_EC_MASK_FANUNTHROTTLED);
928
929 if (arg == 8)
930 /* Full speed, set the unthrottled bit. */
931 val |= 7 | IBM_EC_MASK_FANUNTHROTTLED;
932 else
933 val |= arg;
934
935 return (ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val,
936 1));
937 }
938 break;
939
940 case ACPI_IBM_METHOD_FANSTATUS:
941 if (arg < 0 || arg > 1)
942 return (EINVAL);
943
944 if (!sc->fan_handle) {
945 /* Read the current fanstatus */
946 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
947
948 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
949 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
950 }
951 break;
952 }
953
954 return (0);
955 }
956
957 static int
acpi_ibm_sysctl_init(struct acpi_ibm_softc * sc,int method)958 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
959 {
960 int dummy;
961 ACPI_OBJECT_TYPE cmos_t;
962 ACPI_HANDLE ledb_handle;
963
964 switch (method) {
965 case ACPI_IBM_METHOD_EVENTS:
966 return (TRUE);
967
968 case ACPI_IBM_METHOD_EVENTMASK:
969 return (sc->events_mask_supported);
970
971 case ACPI_IBM_METHOD_HOTKEY:
972 case ACPI_IBM_METHOD_BRIGHTNESS:
973 case ACPI_IBM_METHOD_VOLUME:
974 case ACPI_IBM_METHOD_MUTE:
975 /* EC is required here, which was already checked before */
976 return (TRUE);
977
978 case ACPI_IBM_METHOD_MIC_LED:
979 if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))
980 {
981 /* Turn off mic led by default */
982 acpi_ibm_mic_led_set(sc, 0);
983 return (TRUE);
984 } else
985 sc->mic_led_handle = NULL;
986 return (FALSE);
987
988 case ACPI_IBM_METHOD_THINKLIGHT:
989 sc->cmos_handle = NULL;
990 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
991 sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
992
993 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
994 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
995 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
996 ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
997 cmos_t == ACPI_TYPE_METHOD) {
998 sc->light_cmd_on = 0x0c;
999 sc->light_cmd_off = 0x0d;
1000 sc->cmos_handle = sc->light_handle;
1001 }
1002 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
1003 sc->light_cmd_on = 1;
1004 sc->light_cmd_off = 0;
1005 } else
1006 sc->light_handle = NULL;
1007
1008 sc->light_set_supported = (sc->light_handle &&
1009 ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
1010
1011 if (sc->light_get_supported)
1012 return (TRUE);
1013
1014 if (sc->light_set_supported) {
1015 sc->light_val = 0;
1016 return (TRUE);
1017 }
1018
1019 return (FALSE);
1020
1021 case ACPI_IBM_METHOD_BLUETOOTH:
1022 case ACPI_IBM_METHOD_WLAN:
1023 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
1024 return (TRUE);
1025 return (FALSE);
1026
1027 case ACPI_IBM_METHOD_FANSPEED:
1028 /*
1029 * Some models report the fan speed in levels from 0-7
1030 * Newer models report it contiguously
1031 */
1032 sc->fan_levels =
1033 (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
1034 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
1035 return (TRUE);
1036
1037 case ACPI_IBM_METHOD_FANLEVEL:
1038 case ACPI_IBM_METHOD_FANSTATUS:
1039 /*
1040 * Fan status is only supported on those models,
1041 * which report fan RPM contiguously, not in levels
1042 */
1043 if (sc->fan_levels)
1044 return (FALSE);
1045 return (TRUE);
1046
1047 case ACPI_IBM_METHOD_THERMAL:
1048 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
1049 sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
1050 return (TRUE);
1051 }
1052 return (FALSE);
1053
1054 case ACPI_IBM_METHOD_HANDLEREVENTS:
1055 return (TRUE);
1056
1057 case ACPI_IBM_METHOD_PRIVACYGUARD:
1058 return (acpi_ibm_privacyguard_get(sc) != -1);
1059 }
1060 return (FALSE);
1061 }
1062
1063 static int
acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)1064 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
1065 {
1066 struct acpi_ibm_softc *sc;
1067 int error = 0;
1068 char temp_cmd[] = "TMP0";
1069 int temp[8];
1070
1071 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1072
1073 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1074
1075 ACPI_SERIAL_BEGIN(ibm);
1076
1077 for (int i = 0; i < 8; ++i) {
1078 temp_cmd[3] = '0' + i;
1079
1080 /*
1081 * The TMPx methods seem to return +/- 128 or 0
1082 * when the respecting sensor is not available
1083 */
1084 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
1085 &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
1086 temp[i] = -1;
1087 else if (sc->thermal_updt_supported)
1088 /* Temperature is reported in tenth of Kelvin */
1089 temp[i] = (temp[i] - 2731 + 5) / 10;
1090 }
1091
1092 error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
1093
1094 ACPI_SERIAL_END(ibm);
1095 return (error);
1096 }
1097
1098 static int
acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)1099 acpi_ibm_handlerevents_sysctl(SYSCTL_HANDLER_ARGS)
1100 {
1101 struct acpi_ibm_softc *sc;
1102 int error = 0;
1103 struct sbuf sb;
1104 char *cp, *ep;
1105 int l, val;
1106 unsigned int handler_events;
1107 char temp[128];
1108
1109 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1110
1111 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
1112
1113 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
1114 return (ENOMEM);
1115
1116 ACPI_SERIAL_BEGIN(ibm);
1117
1118 /* Get old values if this is a get request. */
1119 if (req->newptr == NULL) {
1120 for (int i = 0; i < 8 * sizeof(sc->handler_events); i++)
1121 if (sc->handler_events & (1 << i))
1122 sbuf_printf(&sb, "0x%02x ", i + 1);
1123 if (sbuf_len(&sb) == 0)
1124 sbuf_printf(&sb, "NONE");
1125 }
1126
1127 sbuf_trim(&sb);
1128 sbuf_finish(&sb);
1129 strlcpy(temp, sbuf_data(&sb), sizeof(temp));
1130 sbuf_delete(&sb);
1131
1132 error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
1133
1134 /* Check for error or no change */
1135 if (error != 0 || req->newptr == NULL)
1136 goto out;
1137
1138 /* If the user is setting a string, parse it. */
1139 handler_events = 0;
1140 cp = temp;
1141 while (*cp) {
1142 if (isspace(*cp)) {
1143 cp++;
1144 continue;
1145 }
1146
1147 ep = cp;
1148
1149 while (*ep && !isspace(*ep))
1150 ep++;
1151
1152 l = ep - cp;
1153 if (l == 0)
1154 break;
1155
1156 if (strncmp(cp, "NONE", 4) == 0) {
1157 cp = ep;
1158 continue;
1159 }
1160
1161 if (l >= 3 && cp[0] == '0' && (cp[1] == 'X' || cp[1] == 'x'))
1162 val = strtoul(cp, &ep, 16);
1163 else
1164 val = strtoul(cp, &ep, 10);
1165
1166 if (val == 0 || ep == cp || val >= 8 * sizeof(handler_events)) {
1167 cp[l] = '\0';
1168 device_printf(sc->dev, "invalid event code: %s\n", cp);
1169 error = EINVAL;
1170 goto out;
1171 }
1172
1173 handler_events |= 1 << (val - 1);
1174
1175 cp = ep;
1176 }
1177
1178 sc->handler_events = handler_events;
1179 out:
1180 ACPI_SERIAL_END(ibm);
1181 return (error);
1182 }
1183
1184 static int
acpi_ibm_brightness_set(struct acpi_ibm_softc * sc,int arg)1185 acpi_ibm_brightness_set(struct acpi_ibm_softc *sc, int arg)
1186 {
1187 int val, step;
1188 UINT64 val_ec;
1189 ACPI_OBJECT Arg;
1190 ACPI_OBJECT_LIST Args;
1191 ACPI_STATUS status;
1192
1193 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1194 ACPI_SERIAL_ASSERT(ibm);
1195
1196 if (arg < 0 || arg > 7)
1197 return (EINVAL);
1198
1199 /* Read the current brightness */
1200 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
1201 if (ACPI_FAILURE(status))
1202 return (status);
1203
1204 if (sc->cmos_handle) {
1205 val = val_ec & IBM_EC_MASK_BRI;
1206
1207 Args.Count = 1;
1208 Args.Pointer = &Arg;
1209 Arg.Type = ACPI_TYPE_INTEGER;
1210 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP :
1211 IBM_CMOS_BRIGHTNESS_DOWN;
1212
1213 step = (arg > val) ? 1 : -1;
1214 for (int i = val; i != arg; i += step) {
1215 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1216 &Args, NULL);
1217 if (ACPI_FAILURE(status)) {
1218 /* Record the last value */
1219 if (i != val) {
1220 ACPI_EC_WRITE(sc->ec_dev,
1221 IBM_EC_BRIGHTNESS, i - step, 1);
1222 }
1223 return (status);
1224 }
1225 }
1226 }
1227
1228 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
1229 }
1230
1231 static int
acpi_ibm_bluetooth_set(struct acpi_ibm_softc * sc,int arg)1232 acpi_ibm_bluetooth_set(struct acpi_ibm_softc *sc, int arg)
1233 {
1234 int val;
1235
1236 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1237 ACPI_SERIAL_ASSERT(ibm);
1238
1239 if (arg < 0 || arg > 1)
1240 return (EINVAL);
1241
1242 val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT :
1243 sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
1244 return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
1245 }
1246
1247 static int
acpi_ibm_thinklight_set(struct acpi_ibm_softc * sc,int arg)1248 acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg)
1249 {
1250 ACPI_OBJECT Arg;
1251 ACPI_OBJECT_LIST Args;
1252 ACPI_STATUS status;
1253
1254 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1255 ACPI_SERIAL_ASSERT(ibm);
1256
1257 if (arg < 0 || arg > 1)
1258 return (EINVAL);
1259
1260 if (sc->light_set_supported) {
1261 Args.Count = 1;
1262 Args.Pointer = &Arg;
1263 Arg.Type = ACPI_TYPE_INTEGER;
1264 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
1265
1266 status = AcpiEvaluateObject(sc->light_handle, NULL,
1267 &Args, NULL);
1268 if (ACPI_SUCCESS(status))
1269 sc->light_val = arg;
1270 return (status);
1271 }
1272
1273 return (0);
1274 }
1275
1276 /*
1277 * Helper function to make a get or set ACPI call to the PrivacyGuard handle.
1278 * Only meant to be used internally by the get/set functions below.
1279 */
1280 static ACPI_STATUS
acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc * sc,bool write,int * arg)1281 acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg)
1282 {
1283 ACPI_OBJECT Arg;
1284 ACPI_OBJECT_LIST Args;
1285 ACPI_STATUS status;
1286 ACPI_OBJECT out_obj;
1287 ACPI_BUFFER result;
1288
1289 Arg.Type = ACPI_TYPE_INTEGER;
1290 Arg.Integer.Value = (write ? *arg : 0);
1291 Args.Count = 1;
1292 Args.Pointer = &Arg;
1293 result.Length = sizeof(out_obj);
1294 result.Pointer = &out_obj;
1295
1296 status = AcpiEvaluateObject(sc->handle,
1297 (write ? IBM_NAME_PRIVACYGUARD_SET : IBM_NAME_PRIVACYGUARD_GET),
1298 &Args, &result);
1299 if (ACPI_SUCCESS(status) && !write)
1300 *arg = out_obj.Integer.Value;
1301
1302 return (status);
1303 }
1304
1305 /*
1306 * Returns -1 if the device is not present.
1307 */
1308 static int
acpi_ibm_privacyguard_get(struct acpi_ibm_softc * sc)1309 acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc)
1310 {
1311 ACPI_STATUS status;
1312 int val;
1313
1314 status = acpi_ibm_privacyguard_acpi_call(sc, false, &val);
1315 if (ACPI_SUCCESS(status) &&
1316 (val & IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT))
1317 return (val & IBM_FLAG_PRIVACYGUARD_ON);
1318
1319 return (-1);
1320 }
1321
1322 static ACPI_STATUS
acpi_ibm_privacyguard_set(struct acpi_ibm_softc * sc,int arg)1323 acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg)
1324 {
1325 if (arg < 0 || arg > 1)
1326 return (AE_BAD_PARAMETER);
1327
1328 return (acpi_ibm_privacyguard_acpi_call(sc, true, &arg));
1329 }
1330
1331 static int
acpi_ibm_volume_set(struct acpi_ibm_softc * sc,int arg)1332 acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
1333 {
1334 int val, step;
1335 UINT64 val_ec;
1336 ACPI_OBJECT Arg;
1337 ACPI_OBJECT_LIST Args;
1338 ACPI_STATUS status;
1339
1340 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1341 ACPI_SERIAL_ASSERT(ibm);
1342
1343 if (arg < 0 || arg > 14)
1344 return (EINVAL);
1345
1346 /* Read the current volume */
1347 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1348 if (ACPI_FAILURE(status))
1349 return (status);
1350
1351 if (sc->cmos_handle) {
1352 val = val_ec & IBM_EC_MASK_VOL;
1353
1354 Args.Count = 1;
1355 Args.Pointer = &Arg;
1356 Arg.Type = ACPI_TYPE_INTEGER;
1357 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP :
1358 IBM_CMOS_VOLUME_DOWN;
1359
1360 step = (arg > val) ? 1 : -1;
1361 for (int i = val; i != arg; i += step) {
1362 status = AcpiEvaluateObject(sc->cmos_handle, NULL,
1363 &Args, NULL);
1364 if (ACPI_FAILURE(status)) {
1365 /* Record the last value */
1366 if (i != val) {
1367 val_ec = i - step +
1368 (val_ec & (~IBM_EC_MASK_VOL));
1369 ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME,
1370 val_ec, 1);
1371 }
1372 return (status);
1373 }
1374 }
1375 }
1376
1377 val_ec = arg + (val_ec & (~IBM_EC_MASK_VOL));
1378 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1379 }
1380
1381 static int
acpi_ibm_mute_set(struct acpi_ibm_softc * sc,int arg)1382 acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg)
1383 {
1384 UINT64 val_ec;
1385 ACPI_OBJECT Arg;
1386 ACPI_OBJECT_LIST Args;
1387 ACPI_STATUS status;
1388
1389 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1390 ACPI_SERIAL_ASSERT(ibm);
1391
1392 if (arg < 0 || arg > 1)
1393 return (EINVAL);
1394
1395 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1396 if (ACPI_FAILURE(status))
1397 return (status);
1398
1399 if (sc->cmos_handle) {
1400 Args.Count = 1;
1401 Args.Pointer = &Arg;
1402 Arg.Type = ACPI_TYPE_INTEGER;
1403 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
1404
1405 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
1406 if (ACPI_FAILURE(status))
1407 return (status);
1408 }
1409
1410 val_ec = (arg == 1) ? val_ec | IBM_EC_MASK_MUTE :
1411 val_ec & (~IBM_EC_MASK_MUTE);
1412 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, val_ec, 1);
1413 }
1414
1415 static void
acpi_ibm_eventhandler(struct acpi_ibm_softc * sc,int arg)1416 acpi_ibm_eventhandler(struct acpi_ibm_softc *sc, int arg)
1417 {
1418 int val;
1419 UINT64 val_ec;
1420 ACPI_STATUS status;
1421
1422 ACPI_SERIAL_BEGIN(ibm);
1423 switch (arg) {
1424 case IBM_EVENT_SUSPEND_TO_RAM:
1425 power_pm_suspend(POWER_SLEEP_STATE_SUSPEND);
1426 break;
1427
1428 case IBM_EVENT_BLUETOOTH:
1429 acpi_ibm_bluetooth_set(sc, (sc->wlan_bt_flags == 0));
1430 break;
1431
1432 case IBM_EVENT_BRIGHTNESS_UP:
1433 case IBM_EVENT_BRIGHTNESS_DOWN:
1434 /* Read the current brightness */
1435 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS,
1436 &val_ec, 1);
1437 if (ACPI_FAILURE(status))
1438 return;
1439
1440 val = val_ec & IBM_EC_MASK_BRI;
1441 val = (arg == IBM_EVENT_BRIGHTNESS_UP) ? val + 1 : val - 1;
1442 acpi_ibm_brightness_set(sc, val);
1443 break;
1444
1445 case IBM_EVENT_THINKLIGHT:
1446 acpi_ibm_thinklight_set(sc, (sc->light_val == 0));
1447 break;
1448
1449 case IBM_EVENT_VOLUME_UP:
1450 case IBM_EVENT_VOLUME_DOWN:
1451 /* Read the current volume */
1452 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1453 if (ACPI_FAILURE(status))
1454 return;
1455
1456 val = val_ec & IBM_EC_MASK_VOL;
1457 val = (arg == IBM_EVENT_VOLUME_UP) ? val + 1 : val - 1;
1458 acpi_ibm_volume_set(sc, val);
1459 break;
1460
1461 case IBM_EVENT_MUTE:
1462 /* Read the current value */
1463 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
1464 if (ACPI_FAILURE(status))
1465 return;
1466
1467 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
1468 acpi_ibm_mute_set(sc, (val == 0));
1469 break;
1470
1471 default:
1472 break;
1473 }
1474 ACPI_SERIAL_END(ibm);
1475 }
1476
1477 static void
acpi_ibm_notify(ACPI_HANDLE h,UINT32 notify,void * context)1478 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
1479 {
1480 int event, arg, type;
1481 device_t dev = context;
1482 struct acpi_ibm_softc *sc = device_get_softc(dev);
1483
1484 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
1485
1486 if (notify != 0x80)
1487 device_printf(dev, "Unknown notify\n");
1488
1489 for (;;) {
1490 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
1491 if (event == 0)
1492 break;
1493
1494 type = (event >> 12) & 0xf;
1495 arg = event & 0xfff;
1496 switch (type) {
1497 case 1:
1498 if (!(sc->events_availmask & (1 << (arg - 1)))) {
1499 device_printf(dev, "Unknown key %d\n", arg);
1500 break;
1501 }
1502
1503 /* Execute event handler */
1504 if (sc->handler_events & (1 << (arg - 1)))
1505 acpi_ibm_eventhandler(sc, (arg & 0xff));
1506
1507 /* Notify devd(8) */
1508 acpi_UserNotify("IBM", h, (arg & 0xff));
1509 break;
1510 default:
1511 break;
1512 }
1513 }
1514 }
1515