1 /*-
2 * Copyright (c) 2004 Takanori Watanabe
3 * Copyright (c) 2005 Markus Brueffer <markus@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/8.4/sys/dev/acpi_support/acpi_ibm.c 242915 2012-11-12 14:05:40Z bapt $");
30
31 /*
32 * Driver for extra ACPI-controlled gadgets found on IBM ThinkPad laptops.
33 * Inspired by the ibm-acpi and tpb projects which implement these features
34 * on Linux.
35 *
36 * acpi-ibm: <http://ibm-acpi.sourceforge.net/>
37 * tpb: <http://www.nongnu.org/tpb/>
38 */
39
40 #include "opt_acpi.h"
41 #include <sys/param.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/sysctl.h>
54 #include <isa/rtc.h>
55
56 #define _COMPONENT ACPI_OEM
57 ACPI_MODULE_NAME("IBM")
58
59 /* Internal methods */
60 #define ACPI_IBM_METHOD_EVENTS 1
61 #define ACPI_IBM_METHOD_EVENTMASK 2
62 #define ACPI_IBM_METHOD_HOTKEY 3
63 #define ACPI_IBM_METHOD_BRIGHTNESS 4
64 #define ACPI_IBM_METHOD_VOLUME 5
65 #define ACPI_IBM_METHOD_MUTE 6
66 #define ACPI_IBM_METHOD_THINKLIGHT 7
67 #define ACPI_IBM_METHOD_BLUETOOTH 8
68 #define ACPI_IBM_METHOD_WLAN 9
69 #define ACPI_IBM_METHOD_FANSPEED 10
70 #define ACPI_IBM_METHOD_FANLEVEL 11
71 #define ACPI_IBM_METHOD_FANSTATUS 12
72 #define ACPI_IBM_METHOD_THERMAL 13
73
74 /* Hotkeys/Buttons */
75 #define IBM_RTC_HOTKEY1 0x64
76 #define IBM_RTC_MASK_HOME (1 << 0)
77 #define IBM_RTC_MASK_SEARCH (1 << 1)
78 #define IBM_RTC_MASK_MAIL (1 << 2)
79 #define IBM_RTC_MASK_WLAN (1 << 5)
80 #define IBM_RTC_HOTKEY2 0x65
81 #define IBM_RTC_MASK_THINKPAD (1 << 3)
82 #define IBM_RTC_MASK_ZOOM (1 << 5)
83 #define IBM_RTC_MASK_VIDEO (1 << 6)
84 #define IBM_RTC_MASK_HIBERNATE (1 << 7)
85 #define IBM_RTC_THINKLIGHT 0x66
86 #define IBM_RTC_MASK_THINKLIGHT (1 << 4)
87 #define IBM_RTC_SCREENEXPAND 0x67
88 #define IBM_RTC_MASK_SCREENEXPAND (1 << 5)
89 #define IBM_RTC_BRIGHTNESS 0x6c
90 #define IBM_RTC_MASK_BRIGHTNESS (1 << 5)
91 #define IBM_RTC_VOLUME 0x6e
92 #define IBM_RTC_MASK_VOLUME (1 << 7)
93
94 /* Embedded Controller registers */
95 #define IBM_EC_BRIGHTNESS 0x31
96 #define IBM_EC_MASK_BRI 0x7
97 #define IBM_EC_VOLUME 0x30
98 #define IBM_EC_MASK_VOL 0xf
99 #define IBM_EC_MASK_MUTE (1 << 6)
100 #define IBM_EC_FANSTATUS 0x2F
101 #define IBM_EC_MASK_FANLEVEL 0x3f
102 #define IBM_EC_MASK_FANDISENGAGED (1 << 6)
103 #define IBM_EC_MASK_FANSTATUS (1 << 7)
104 #define IBM_EC_FANSPEED 0x84
105
106 /* CMOS Commands */
107 #define IBM_CMOS_VOLUME_DOWN 0
108 #define IBM_CMOS_VOLUME_UP 1
109 #define IBM_CMOS_VOLUME_MUTE 2
110 #define IBM_CMOS_BRIGHTNESS_UP 4
111 #define IBM_CMOS_BRIGHTNESS_DOWN 5
112
113 /* ACPI methods */
114 #define IBM_NAME_KEYLIGHT "KBLT"
115 #define IBM_NAME_WLAN_BT_GET "GBDC"
116 #define IBM_NAME_WLAN_BT_SET "SBDC"
117 #define IBM_NAME_MASK_BT (1 << 1)
118 #define IBM_NAME_MASK_WLAN (1 << 2)
119 #define IBM_NAME_THERMAL_GET "TMP7"
120 #define IBM_NAME_THERMAL_UPDT "UPDT"
121
122 #define IBM_NAME_EVENTS_STATUS_GET "DHKC"
123 #define IBM_NAME_EVENTS_MASK_GET "DHKN"
124 #define IBM_NAME_EVENTS_STATUS_SET "MHKC"
125 #define IBM_NAME_EVENTS_MASK_SET "MHKM"
126 #define IBM_NAME_EVENTS_GET "MHKP"
127 #define IBM_NAME_EVENTS_AVAILMASK "MHKA"
128
129 #define ABS(x) (((x) < 0)? -(x) : (x))
130
131 struct acpi_ibm_softc {
132 device_t dev;
133 ACPI_HANDLE handle;
134
135 /* Embedded controller */
136 device_t ec_dev;
137 ACPI_HANDLE ec_handle;
138
139 /* CMOS */
140 ACPI_HANDLE cmos_handle;
141
142 /* Fan status */
143 ACPI_HANDLE fan_handle;
144 int fan_levels;
145
146 /* Keylight commands and states */
147 ACPI_HANDLE light_handle;
148 int light_cmd_on;
149 int light_cmd_off;
150 int light_val;
151 int light_get_supported;
152 int light_set_supported;
153
154 /* led(4) interface */
155 struct cdev *led_dev;
156 int led_busy;
157 int led_state;
158
159 int wlan_bt_flags;
160 int thermal_updt_supported;
161
162 unsigned int events_availmask;
163 unsigned int events_initialmask;
164 int events_mask_supported;
165 int events_enable;
166
167 struct sysctl_ctx_list *sysctl_ctx;
168 struct sysctl_oid *sysctl_tree;
169 };
170
171 static struct {
172 char *name;
173 int method;
174 char *description;
175 int access;
176 } acpi_ibm_sysctls[] = {
177 {
178 .name = "events",
179 .method = ACPI_IBM_METHOD_EVENTS,
180 .description = "ACPI events enable",
181 .access = CTLTYPE_INT | CTLFLAG_RW
182 },
183 {
184 .name = "eventmask",
185 .method = ACPI_IBM_METHOD_EVENTMASK,
186 .description = "ACPI eventmask",
187 .access = CTLTYPE_INT | CTLFLAG_RW
188 },
189 {
190 .name = "hotkey",
191 .method = ACPI_IBM_METHOD_HOTKEY,
192 .description = "Key Status",
193 .access = CTLTYPE_INT | CTLFLAG_RD
194 },
195 {
196 .name = "lcd_brightness",
197 .method = ACPI_IBM_METHOD_BRIGHTNESS,
198 .description = "LCD Brightness",
199 .access = CTLTYPE_INT | CTLFLAG_RW
200 },
201 {
202 .name = "volume",
203 .method = ACPI_IBM_METHOD_VOLUME,
204 .description = "Volume",
205 .access = CTLTYPE_INT | CTLFLAG_RW
206 },
207 {
208 .name = "mute",
209 .method = ACPI_IBM_METHOD_MUTE,
210 .description = "Mute",
211 .access = CTLTYPE_INT | CTLFLAG_RW
212 },
213 {
214 .name = "thinklight",
215 .method = ACPI_IBM_METHOD_THINKLIGHT,
216 .description = "Thinklight enable",
217 .access = CTLTYPE_INT | CTLFLAG_RW
218 },
219 {
220 .name = "bluetooth",
221 .method = ACPI_IBM_METHOD_BLUETOOTH,
222 .description = "Bluetooth enable",
223 .access = CTLTYPE_INT | CTLFLAG_RW
224 },
225 {
226 .name = "wlan",
227 .method = ACPI_IBM_METHOD_WLAN,
228 .description = "WLAN enable",
229 .access = CTLTYPE_INT | CTLFLAG_RD
230 },
231 {
232 .name = "fan_speed",
233 .method = ACPI_IBM_METHOD_FANSPEED,
234 .description = "Fan speed",
235 .access = CTLTYPE_INT | CTLFLAG_RD
236 },
237 {
238 .name = "fan_level",
239 .method = ACPI_IBM_METHOD_FANLEVEL,
240 .description = "Fan level",
241 .access = CTLTYPE_INT | CTLFLAG_RW
242 },
243 {
244 .name = "fan",
245 .method = ACPI_IBM_METHOD_FANSTATUS,
246 .description = "Fan enable",
247 .access = CTLTYPE_INT | CTLFLAG_RW
248 },
249
250 { NULL, 0, NULL, 0 }
251 };
252
253 ACPI_SERIAL_DECL(ibm, "ACPI IBM extras");
254
255 static int acpi_ibm_probe(device_t dev);
256 static int acpi_ibm_attach(device_t dev);
257 static int acpi_ibm_detach(device_t dev);
258 static int acpi_ibm_resume(device_t dev);
259
260 static void ibm_led(void *softc, int onoff);
261 static void ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
262
263 static int acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS);
264 static int acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method);
265 static int acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method);
266 static int acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int val);
267
268 static int acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val);
269 static int acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS);
270 static void acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context);
271
272 static device_method_t acpi_ibm_methods[] = {
273 /* Device interface */
274 DEVMETHOD(device_probe, acpi_ibm_probe),
275 DEVMETHOD(device_attach, acpi_ibm_attach),
276 DEVMETHOD(device_detach, acpi_ibm_detach),
277 DEVMETHOD(device_resume, acpi_ibm_resume),
278
279 {0, 0}
280 };
281
282 static driver_t acpi_ibm_driver = {
283 "acpi_ibm",
284 acpi_ibm_methods,
285 sizeof(struct acpi_ibm_softc),
286 };
287
288 static devclass_t acpi_ibm_devclass;
289
290 DRIVER_MODULE(acpi_ibm, acpi, acpi_ibm_driver, acpi_ibm_devclass,
291 0, 0);
292 MODULE_DEPEND(acpi_ibm, acpi, 1, 1, 1);
293 static char *ibm_ids[] = {"IBM0068", "LEN0068", NULL};
294
295 static void
296 ibm_led(void *softc, int onoff)
297 {
298 struct acpi_ibm_softc* sc = (struct acpi_ibm_softc*) softc;
299
300 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
301
302 if (sc->led_busy)
303 return;
304
305 sc->led_busy = 1;
306 sc->led_state = onoff;
307
308 AcpiOsExecute(OSL_NOTIFY_HANDLER, (void *)ibm_led_task, sc);
309 }
310
311 static void
312 ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused)
313 {
314 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
315
316 ACPI_SERIAL_BEGIN(ibm);
317 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_THINKLIGHT, sc->led_state);
318 ACPI_SERIAL_END(ibm);
319
320 sc->led_busy = 0;
321 }
322
323 static int
324 acpi_ibm_probe(device_t dev)
325 {
326 if (acpi_disabled("ibm") ||
327 ACPI_ID_PROBE(device_get_parent(dev), dev, ibm_ids) == NULL ||
328 device_get_unit(dev) != 0)
329 return (ENXIO);
330
331 device_set_desc(dev, "IBM ThinkPad ACPI Extras");
332
333 return (0);
334 }
335
336 static int
337 acpi_ibm_attach(device_t dev)
338 {
339 struct acpi_ibm_softc *sc;
340 devclass_t ec_devclass;
341
342 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
343
344 sc = device_get_softc(dev);
345 sc->dev = dev;
346 sc->handle = acpi_get_handle(dev);
347
348 /* Look for the first embedded controller */
349 if (!(ec_devclass = devclass_find ("acpi_ec"))) {
350 if (bootverbose)
351 device_printf(dev, "Couldn't find acpi_ec devclass\n");
352 return (EINVAL);
353 }
354 if (!(sc->ec_dev = devclass_get_device(ec_devclass, 0))) {
355 if (bootverbose)
356 device_printf(dev, "Couldn't find acpi_ec device\n");
357 return (EINVAL);
358 }
359 sc->ec_handle = acpi_get_handle(sc->ec_dev);
360
361 /* Get the sysctl tree */
362 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
363 sc->sysctl_tree = device_get_sysctl_tree(dev);
364
365 /* Look for event mask and hook up the nodes */
366 sc->events_mask_supported = ACPI_SUCCESS(acpi_GetInteger(sc->handle,
367 IBM_NAME_EVENTS_MASK_GET, &sc->events_initialmask));
368
369 if (sc->events_mask_supported) {
370 SYSCTL_ADD_INT(sc->sysctl_ctx,
371 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
372 "initialmask", CTLFLAG_RD,
373 &sc->events_initialmask, 0, "Initial eventmask");
374
375 /* The availmask is the bitmask of supported events */
376 if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
377 IBM_NAME_EVENTS_AVAILMASK, &sc->events_availmask)))
378 sc->events_availmask = 0xffffffff;
379
380 SYSCTL_ADD_INT(sc->sysctl_ctx,
381 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
382 "availmask", CTLFLAG_RD,
383 &sc->events_availmask, 0, "Mask of supported events");
384 }
385
386 /* Hook up proc nodes */
387 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
388 if (!acpi_ibm_sysctl_init(sc, acpi_ibm_sysctls[i].method))
389 continue;
390
391 SYSCTL_ADD_PROC(sc->sysctl_ctx,
392 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
393 acpi_ibm_sysctls[i].name, acpi_ibm_sysctls[i].access,
394 sc, i, acpi_ibm_sysctl, "I",
395 acpi_ibm_sysctls[i].description);
396 }
397
398 /* Hook up thermal node */
399 if (acpi_ibm_sysctl_init(sc, ACPI_IBM_METHOD_THERMAL)) {
400 SYSCTL_ADD_PROC(sc->sysctl_ctx,
401 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
402 "thermal", CTLTYPE_STRING | CTLFLAG_RD,
403 sc, 0, acpi_ibm_thermal_sysctl, "I",
404 "Thermal zones");
405 }
406
407 /* Handle notifies */
408 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
409 acpi_ibm_notify, dev);
410
411 /* Hook up light to led(4) */
412 if (sc->light_set_supported)
413 sc->led_dev = led_create_state(ibm_led, sc, "thinklight", sc->light_val);
414
415 return (0);
416 }
417
418 static int
419 acpi_ibm_detach(device_t dev)
420 {
421 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
422
423 struct acpi_ibm_softc *sc = device_get_softc(dev);
424
425 /* Disable events and restore eventmask */
426 ACPI_SERIAL_BEGIN(ibm);
427 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTS, 0);
428 acpi_ibm_sysctl_set(sc, ACPI_IBM_METHOD_EVENTMASK, sc->events_initialmask);
429 ACPI_SERIAL_END(ibm);
430
431 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, acpi_ibm_notify);
432
433 if (sc->led_dev != NULL)
434 led_destroy(sc->led_dev);
435
436 return (0);
437 }
438
439 static int
440 acpi_ibm_resume(device_t dev)
441 {
442 struct acpi_ibm_softc *sc = device_get_softc(dev);
443
444 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
445
446 ACPI_SERIAL_BEGIN(ibm);
447 for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
448 int val;
449
450 if ((acpi_ibm_sysctls[i].access & CTLFLAG_RD) == 0) {
451 continue;
452 }
453
454 val = acpi_ibm_sysctl_get(sc, i);
455
456 if ((acpi_ibm_sysctls[i].access & CTLFLAG_WR) == 0) {
457 continue;
458 }
459
460 acpi_ibm_sysctl_set(sc, i, val);
461 }
462 ACPI_SERIAL_END(ibm);
463
464 return (0);
465 }
466
467 static int
468 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
469 {
470 ACPI_OBJECT arg[2];
471 ACPI_OBJECT_LIST args;
472 ACPI_STATUS status;
473
474 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
475 ACPI_SERIAL_ASSERT(ibm);
476
477 args.Count = 2;
478 args.Pointer = arg;
479 arg[0].Type = ACPI_TYPE_INTEGER;
480 arg[1].Type = ACPI_TYPE_INTEGER;
481
482 for (int i = 0; i < 32; ++i) {
483 arg[0].Integer.Value = i+1;
484 arg[1].Integer.Value = (((1 << i) & val) != 0);
485 status = AcpiEvaluateObject(sc->handle,
486 IBM_NAME_EVENTS_MASK_SET, &args, NULL);
487
488 if (ACPI_FAILURE(status))
489 return (status);
490 }
491
492 return (0);
493 }
494
495 static int
496 acpi_ibm_sysctl(SYSCTL_HANDLER_ARGS)
497 {
498 struct acpi_ibm_softc *sc;
499 int arg;
500 int error = 0;
501 int function;
502 int method;
503
504 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
505
506 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
507 function = oidp->oid_arg2;
508 method = acpi_ibm_sysctls[function].method;
509
510 ACPI_SERIAL_BEGIN(ibm);
511 arg = acpi_ibm_sysctl_get(sc, method);
512 error = sysctl_handle_int(oidp, &arg, 0, req);
513
514 /* Sanity check */
515 if (error != 0 || req->newptr == NULL)
516 goto out;
517
518 /* Update */
519 error = acpi_ibm_sysctl_set(sc, method, arg);
520
521 out:
522 ACPI_SERIAL_END(ibm);
523 return (error);
524 }
525
526 static int
527 acpi_ibm_sysctl_get(struct acpi_ibm_softc *sc, int method)
528 {
529 UINT64 val_ec;
530 int val = 0, key;
531
532 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
533 ACPI_SERIAL_ASSERT(ibm);
534
535 switch (method) {
536 case ACPI_IBM_METHOD_EVENTS:
537 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_GET, &val);
538 break;
539
540 case ACPI_IBM_METHOD_EVENTMASK:
541 if (sc->events_mask_supported)
542 acpi_GetInteger(sc->handle, IBM_NAME_EVENTS_MASK_GET, &val);
543 break;
544
545 case ACPI_IBM_METHOD_HOTKEY:
546 /*
547 * Construct the hotkey as a bitmask as illustrated below.
548 * Note that whenever a key was pressed, the respecting bit
549 * toggles and nothing else changes.
550 * +--+--+-+-+-+-+-+-+-+-+-+-+
551 * |11|10|9|8|7|6|5|4|3|2|1|0|
552 * +--+--+-+-+-+-+-+-+-+-+-+-+
553 * | | | | | | | | | | | |
554 * | | | | | | | | | | | +- Home Button
555 * | | | | | | | | | | +--- Search Button
556 * | | | | | | | | | +----- Mail Button
557 * | | | | | | | | +------- Thinkpad Button
558 * | | | | | | | +--------- Zoom (Fn + Space)
559 * | | | | | | +----------- WLAN Button
560 * | | | | | +------------- Video Button
561 * | | | | +--------------- Hibernate Button
562 * | | | +----------------- Thinklight Button
563 * | | +------------------- Screen expand (Fn + F8)
564 * | +--------------------- Brightness
565 * +------------------------ Volume/Mute
566 */
567 key = rtcin(IBM_RTC_HOTKEY1);
568 val = (IBM_RTC_MASK_HOME | IBM_RTC_MASK_SEARCH | IBM_RTC_MASK_MAIL | IBM_RTC_MASK_WLAN) & key;
569 key = rtcin(IBM_RTC_HOTKEY2);
570 val |= (IBM_RTC_MASK_THINKPAD | IBM_RTC_MASK_VIDEO | IBM_RTC_MASK_HIBERNATE) & key;
571 val |= (IBM_RTC_MASK_ZOOM & key) >> 1;
572 key = rtcin(IBM_RTC_THINKLIGHT);
573 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
574 key = rtcin(IBM_RTC_SCREENEXPAND);
575 val |= (IBM_RTC_MASK_THINKLIGHT & key) << 4;
576 key = rtcin(IBM_RTC_BRIGHTNESS);
577 val |= (IBM_RTC_MASK_BRIGHTNESS & key) << 5;
578 key = rtcin(IBM_RTC_VOLUME);
579 val |= (IBM_RTC_MASK_VOLUME & key) << 4;
580 break;
581
582 case ACPI_IBM_METHOD_BRIGHTNESS:
583 ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
584 val = val_ec & IBM_EC_MASK_BRI;
585 break;
586
587 case ACPI_IBM_METHOD_VOLUME:
588 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
589 val = val_ec & IBM_EC_MASK_VOL;
590 break;
591
592 case ACPI_IBM_METHOD_MUTE:
593 ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
594 val = ((val_ec & IBM_EC_MASK_MUTE) == IBM_EC_MASK_MUTE);
595 break;
596
597 case ACPI_IBM_METHOD_THINKLIGHT:
598 if (sc->light_get_supported)
599 acpi_GetInteger(sc->ec_handle, IBM_NAME_KEYLIGHT, &val);
600 else
601 val = sc->light_val;
602 break;
603
604 case ACPI_IBM_METHOD_BLUETOOTH:
605 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
606 sc->wlan_bt_flags = val;
607 val = ((val & IBM_NAME_MASK_BT) != 0);
608 break;
609
610 case ACPI_IBM_METHOD_WLAN:
611 acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &val);
612 sc->wlan_bt_flags = val;
613 val = ((val & IBM_NAME_MASK_WLAN) != 0);
614 break;
615
616 case ACPI_IBM_METHOD_FANSPEED:
617 if (sc->fan_handle) {
618 if(ACPI_FAILURE(acpi_GetInteger(sc->fan_handle, NULL, &val)))
619 val = -1;
620 }
621 else {
622 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSPEED, &val_ec, 2);
623 val = val_ec;
624 }
625 break;
626
627 case ACPI_IBM_METHOD_FANLEVEL:
628 /*
629 * The IBM_EC_FANSTATUS register works as follows:
630 * Bit 0-5 indicate the level at which the fan operates. Only
631 * values between 0 and 7 have an effect. Everything
632 * above 7 is treated the same as level 7
633 * Bit 6 overrides the fan speed limit if set to 1
634 * Bit 7 indicates at which mode the fan operates:
635 * manual (0) or automatic (1)
636 */
637 if (!sc->fan_handle) {
638 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
639 val = val_ec & IBM_EC_MASK_FANLEVEL;
640 }
641 break;
642
643 case ACPI_IBM_METHOD_FANSTATUS:
644 if (!sc->fan_handle) {
645 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
646 val = (val_ec & IBM_EC_MASK_FANSTATUS) == IBM_EC_MASK_FANSTATUS;
647 }
648 else
649 val = -1;
650 break;
651 }
652
653 return (val);
654 }
655
656 static int
657 acpi_ibm_sysctl_set(struct acpi_ibm_softc *sc, int method, int arg)
658 {
659 int val, step;
660 UINT64 val_ec;
661 ACPI_OBJECT Arg;
662 ACPI_OBJECT_LIST Args;
663 ACPI_STATUS status;
664
665 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
666 ACPI_SERIAL_ASSERT(ibm);
667
668 switch (method) {
669 case ACPI_IBM_METHOD_EVENTS:
670 if (arg < 0 || arg > 1)
671 return (EINVAL);
672
673 status = acpi_SetInteger(sc->handle, IBM_NAME_EVENTS_STATUS_SET, arg);
674 if (ACPI_FAILURE(status))
675 return (status);
676 if (sc->events_mask_supported)
677 return acpi_ibm_eventmask_set(sc, sc->events_availmask);
678 break;
679
680 case ACPI_IBM_METHOD_EVENTMASK:
681 if (sc->events_mask_supported)
682 return acpi_ibm_eventmask_set(sc, arg);
683 break;
684
685 case ACPI_IBM_METHOD_BRIGHTNESS:
686 if (arg < 0 || arg > 7)
687 return (EINVAL);
688
689 if (sc->cmos_handle) {
690 /* Read the current brightness */
691 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_BRIGHTNESS, &val_ec, 1);
692 if (ACPI_FAILURE(status))
693 return (status);
694 val = val_ec & IBM_EC_MASK_BRI;
695
696 Args.Count = 1;
697 Args.Pointer = &Arg;
698 Arg.Type = ACPI_TYPE_INTEGER;
699 Arg.Integer.Value = (arg > val) ? IBM_CMOS_BRIGHTNESS_UP : IBM_CMOS_BRIGHTNESS_DOWN;
700
701 step = (arg > val) ? 1 : -1;
702 for (int i = val; i != arg; i += step) {
703 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
704 if (ACPI_FAILURE(status))
705 break;
706 }
707 }
708 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_BRIGHTNESS, arg, 1);
709 break;
710
711 case ACPI_IBM_METHOD_VOLUME:
712 if (arg < 0 || arg > 14)
713 return (EINVAL);
714
715 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
716 if (ACPI_FAILURE(status))
717 return (status);
718
719 if (sc->cmos_handle) {
720 val = val_ec & IBM_EC_MASK_VOL;
721
722 Args.Count = 1;
723 Args.Pointer = &Arg;
724 Arg.Type = ACPI_TYPE_INTEGER;
725 Arg.Integer.Value = (arg > val) ? IBM_CMOS_VOLUME_UP : IBM_CMOS_VOLUME_DOWN;
726
727 step = (arg > val) ? 1 : -1;
728 for (int i = val; i != arg; i += step) {
729 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
730 if (ACPI_FAILURE(status))
731 break;
732 }
733 }
734 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, arg + (val_ec & (~IBM_EC_MASK_VOL)), 1);
735 break;
736
737 case ACPI_IBM_METHOD_MUTE:
738 if (arg < 0 || arg > 1)
739 return (EINVAL);
740
741 status = ACPI_EC_READ(sc->ec_dev, IBM_EC_VOLUME, &val_ec, 1);
742 if (ACPI_FAILURE(status))
743 return (status);
744
745 if (sc->cmos_handle) {
746 Args.Count = 1;
747 Args.Pointer = &Arg;
748 Arg.Type = ACPI_TYPE_INTEGER;
749 Arg.Integer.Value = IBM_CMOS_VOLUME_MUTE;
750
751 status = AcpiEvaluateObject(sc->cmos_handle, NULL, &Args, NULL);
752 if (ACPI_FAILURE(status))
753 break;
754 }
755 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_VOLUME, (arg==1) ? val_ec | IBM_EC_MASK_MUTE : val_ec & (~IBM_EC_MASK_MUTE), 1);
756 break;
757
758 case ACPI_IBM_METHOD_THINKLIGHT:
759 if (arg < 0 || arg > 1)
760 return (EINVAL);
761
762 if (sc->light_set_supported) {
763 Args.Count = 1;
764 Args.Pointer = &Arg;
765 Arg.Type = ACPI_TYPE_INTEGER;
766 Arg.Integer.Value = arg ? sc->light_cmd_on : sc->light_cmd_off;
767
768 status = AcpiEvaluateObject(sc->light_handle, NULL, &Args, NULL);
769 if (ACPI_SUCCESS(status))
770 sc->light_val = arg;
771 return (status);
772 }
773 break;
774
775 case ACPI_IBM_METHOD_BLUETOOTH:
776 if (arg < 0 || arg > 1)
777 return (EINVAL);
778
779 val = (arg == 1) ? sc->wlan_bt_flags | IBM_NAME_MASK_BT : sc->wlan_bt_flags & (~IBM_NAME_MASK_BT);
780 return acpi_SetInteger(sc->handle, IBM_NAME_WLAN_BT_SET, val);
781 break;
782
783 case ACPI_IBM_METHOD_FANLEVEL:
784 if (arg < 0 || arg > 7)
785 return (EINVAL);
786
787 if (!sc->fan_handle) {
788 /* Read the current fanstatus */
789 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
790 val = val_ec & (~IBM_EC_MASK_FANLEVEL);
791
792 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS, val | arg, 1);
793 }
794 break;
795
796 case ACPI_IBM_METHOD_FANSTATUS:
797 if (arg < 0 || arg > 1)
798 return (EINVAL);
799
800 if (!sc->fan_handle) {
801 /* Read the current fanstatus */
802 ACPI_EC_READ(sc->ec_dev, IBM_EC_FANSTATUS, &val_ec, 1);
803
804 return ACPI_EC_WRITE(sc->ec_dev, IBM_EC_FANSTATUS,
805 (arg == 1) ? (val_ec | IBM_EC_MASK_FANSTATUS) : (val_ec & (~IBM_EC_MASK_FANSTATUS)), 1);
806 }
807 break;
808 }
809
810 return (0);
811 }
812
813 static int
814 acpi_ibm_sysctl_init(struct acpi_ibm_softc *sc, int method)
815 {
816 int dummy;
817 ACPI_OBJECT_TYPE cmos_t;
818 ACPI_HANDLE ledb_handle;
819
820 switch (method) {
821 case ACPI_IBM_METHOD_EVENTS:
822 /* Events are disabled by default */
823 return (TRUE);
824
825 case ACPI_IBM_METHOD_EVENTMASK:
826 return (sc->events_mask_supported);
827
828 case ACPI_IBM_METHOD_HOTKEY:
829 case ACPI_IBM_METHOD_BRIGHTNESS:
830 case ACPI_IBM_METHOD_VOLUME:
831 case ACPI_IBM_METHOD_MUTE:
832 /* EC is required here, which was aready checked before */
833 return (TRUE);
834
835 case ACPI_IBM_METHOD_THINKLIGHT:
836 sc->cmos_handle = NULL;
837 sc->light_get_supported = ACPI_SUCCESS(acpi_GetInteger(
838 sc->ec_handle, IBM_NAME_KEYLIGHT, &sc->light_val));
839
840 if ((ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\UCMS", &sc->light_handle)) ||
841 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMOS", &sc->light_handle)) ||
842 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\CMS", &sc->light_handle))) &&
843 ACPI_SUCCESS(AcpiGetType(sc->light_handle, &cmos_t)) &&
844 cmos_t == ACPI_TYPE_METHOD) {
845 sc->light_cmd_on = 0x0c;
846 sc->light_cmd_off = 0x0d;
847 sc->cmos_handle = sc->light_handle;
848 }
849 else if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\LGHT", &sc->light_handle))) {
850 sc->light_cmd_on = 1;
851 sc->light_cmd_off = 0;
852 }
853 else
854 sc->light_handle = NULL;
855
856 sc->light_set_supported = (sc->light_handle &&
857 ACPI_FAILURE(AcpiGetHandle(sc->ec_handle, "LEDB", &ledb_handle)));
858
859 if (sc->light_get_supported)
860 return (TRUE);
861
862 if (sc->light_set_supported) {
863 sc->light_val = 0;
864 return (TRUE);
865 }
866
867 return (FALSE);
868
869 case ACPI_IBM_METHOD_BLUETOOTH:
870 case ACPI_IBM_METHOD_WLAN:
871 if (ACPI_SUCCESS(acpi_GetInteger(sc->handle, IBM_NAME_WLAN_BT_GET, &dummy)))
872 return (TRUE);
873 return (FALSE);
874
875 case ACPI_IBM_METHOD_FANSPEED:
876 /*
877 * Some models report the fan speed in levels from 0-7
878 * Newer models report it contiguously
879 */
880 sc->fan_levels =
881 (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "GFAN", &sc->fan_handle)) ||
882 ACPI_SUCCESS(AcpiGetHandle(sc->handle, "\\FSPD", &sc->fan_handle)));
883 return (TRUE);
884
885 case ACPI_IBM_METHOD_FANLEVEL:
886 case ACPI_IBM_METHOD_FANSTATUS:
887 /*
888 * Fan status is only supported on those models,
889 * which report fan RPM contiguously, not in levels
890 */
891 if (sc->fan_levels)
892 return (FALSE);
893 return (TRUE);
894
895 case ACPI_IBM_METHOD_THERMAL:
896 if (ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_GET, &dummy))) {
897 sc->thermal_updt_supported = ACPI_SUCCESS(acpi_GetInteger(sc->ec_handle, IBM_NAME_THERMAL_UPDT, &dummy));
898 return (TRUE);
899 }
900 return (FALSE);
901 }
902 return (FALSE);
903 }
904
905 static int
906 acpi_ibm_thermal_sysctl(SYSCTL_HANDLER_ARGS)
907 {
908 struct acpi_ibm_softc *sc;
909 int error = 0;
910 char temp_cmd[] = "TMP0";
911 int temp[8];
912
913 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
914
915 sc = (struct acpi_ibm_softc *)oidp->oid_arg1;
916
917 ACPI_SERIAL_BEGIN(ibm);
918
919 for (int i = 0; i < 8; ++i) {
920 temp_cmd[3] = '' + i;
921
922 /*
923 * The TMPx methods seem to return +/- 128 or 0
924 * when the respecting sensor is not available
925 */
926 if (ACPI_FAILURE(acpi_GetInteger(sc->ec_handle, temp_cmd,
927 &temp[i])) || ABS(temp[i]) == 128 || temp[i] == 0)
928 temp[i] = -1;
929 else if (sc->thermal_updt_supported)
930 /* Temperature is reported in tenth of Kelvin */
931 temp[i] = (temp[i] - 2732 + 5) / 10;
932 }
933
934 error = sysctl_handle_opaque(oidp, &temp, 8*sizeof(int), req);
935
936 ACPI_SERIAL_END(ibm);
937 return (error);
938 }
939
940 static void
941 acpi_ibm_notify(ACPI_HANDLE h, UINT32 notify, void *context)
942 {
943 int event, arg, type;
944 device_t dev = context;
945 struct acpi_ibm_softc *sc = device_get_softc(dev);
946
947 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
948
949 if (notify != 0x80)
950 device_printf(dev, "Unknown notify\n");
951
952 for (;;) {
953 acpi_GetInteger(acpi_get_handle(dev), IBM_NAME_EVENTS_GET, &event);
954
955 if (event == 0)
956 break;
957
958
959 type = (event >> 12) & 0xf;
960 arg = event & 0xfff;
961 switch (type) {
962 case 1:
963 if (!(sc->events_availmask & (1 << (arg - 1)))) {
964 device_printf(dev, "Unknown key %d\n", arg);
965 break;
966 }
967
968 /* Notify devd(8) */
969 acpi_UserNotify("IBM", h, (arg & 0xff));
970 break;
971 default:
972 break;
973 }
974 }
975 }
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