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wmi_hp.c revision 1.3
      1 /*	$NetBSD: wmi_hp.c,v 1.3 2010/10/24 16:25:31 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2009, 2010 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jukka Ruohonen.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  *
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 /*-
     34  * Copyright (c) 2009 Michael Gmelin <freebsd (at) grem.de>
     35  * All rights reserved.
     36  *
     37  * Redistribution and use in source and binary forms, with or without
     38  * modification, are permitted provided that the following conditions
     39  * are met:
     40  * 1. Redistributions of source code must retain the above copyright
     41  *    notice, this list of conditions and the following disclaimer.
     42  * 2. Redistributions in binary form must reproduce the above copyright
     43  *    notice, this list of conditions and the following disclaimer in the
     44  *    documentation and/or other materials provided with the distribution.
     45  *
     46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     56  * SUCH DAMAGE.
     57  */
     58 
     59 #include <sys/cdefs.h>
     60 __KERNEL_RCSID(0, "$NetBSD: wmi_hp.c,v 1.3 2010/10/24 16:25:31 jmcneill Exp $");
     61 
     62 #include <sys/param.h>
     63 #include <sys/device.h>
     64 #include <sys/kmem.h>
     65 #include <sys/module.h>
     66 
     67 #include <dev/acpi/acpireg.h>
     68 #include <dev/acpi/acpivar.h>
     69 #include <dev/acpi/wmi/wmi_acpivar.h>
     70 
     71 #include <dev/sysmon/sysmonvar.h>
     72 
     73 #define _COMPONENT			ACPI_RESOURCE_COMPONENT
     74 ACPI_MODULE_NAME			("wmi_hp")
     75 
     76 #define WMI_HP_METHOD_ARG_READ		0x01
     77 #define WMI_HP_METHOD_ARG_WRITE		0x02
     78 #define WMI_HP_METHOD_ARG_WRITE_SIZE	0x04
     79 #define WMI_HP_METHOD_ARG_MAGIC		0x55434553
     80 #define WMI_HP_METHOD_ARG_SIZE		0x05 * sizeof(uint32_t)
     81 
     82 #define WMI_HP_METHOD_CMD_DISPLAY	0x01
     83 #define WMI_HP_METHOD_CMD_HDDTEMP	0x02
     84 #define WMI_HP_METHOD_CMD_ALS		0x03
     85 #define WMI_HP_METHOD_CMD_DOCK		0x04
     86 #define WMI_HP_METHOD_CMD_SWITCH	0x05
     87 #define WMI_HP_METHOD_CMD_HOTKEY	0x0C
     88 
     89 #define WMI_HP_EVENT_DOCK		0x01
     90 #define WMI_HP_EVENT_HOTKEY		0x04
     91 #define WMI_HP_EVENT_SWITCH		0x05
     92 /*      WMI_HP_EVENT_UNKNOWN		0xXX */
     93 
     94 #define WMI_HP_HOTKEY_BRIGHTNESS_UP	0x02
     95 #define WMI_HP_HOTKEY_BRIGHTNESS_DOWN	0x03
     96 /*      WMI_HP_HOTKEY_UNKNOWN		0xXX */
     97 
     98 #define WMI_HP_SWITCH_WLAN		0x01
     99 #define WMI_HP_SWITCH_BT		0x02
    100 #define WMI_HP_SWITCH_WWAN		0x04
    101 
    102 #define WMI_HP_SWITCH_ARG_WLAN_OFF	0x100
    103 #define WMI_HP_SWITCH_ARG_WLAN_ON	0x101
    104 #define WMI_HP_SWITCH_ARG_BT_OFF	0x200
    105 #define WMI_HP_SWITCH_ARG_BT_ON		0x202
    106 #define WMI_HP_SWITCH_ARG_WWAN_OFF	0x400
    107 #define WMI_HP_SWITCH_ARG_WWAN_ON	0x404
    108 
    109 #define WMI_HP_SWITCH_MASK_WLAN_ONAIR	__BIT(8)
    110 #define WMI_HP_SWITCH_MASK_WLAN_ENABLED	__BIT(9)
    111 #define WMI_HP_SWITCH_MASK_WLAN_RADIO	__BIT(11)
    112 #define WMI_HP_SWITCH_MASK_BT_ONAIR	__BIT(16)
    113 #define WMI_HP_SWITCH_MASK_BT_ENABLED	__BIT(17)
    114 #define WMI_HP_SWITCH_MASK_BT_RADIO	__BIT(19)
    115 #define WMI_HP_SWITCH_MASK_WWAN_ONAIR	__BIT(24)
    116 #define WMI_HP_SWITCH_MASK_WWAN_ENABLED	__BIT(25)
    117 #define WMI_HP_SWITCH_MASK_WWAN_RADIO	__BIT(27)
    118 
    119 #define WMI_HP_GUID_EVENT		"95F24279-4D7B-4334-9387-ACCDC67EF61C"
    120 #define WMI_HP_GUID_METHOD		"5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
    121 
    122 #define WMI_HP_SENSOR_WLAN		0
    123 #define WMI_HP_SENSOR_BT		1
    124 #define WMI_HP_SENSOR_WWAN		2
    125 #define WMI_HP_SENSOR_COUNT		3
    126 #define WMI_HP_SENSOR_SIZE		3 * sizeof(envsys_data_t)
    127 
    128 struct wmi_hp_softc {
    129 	device_t		sc_dev;
    130 	device_t		sc_parent;
    131 	struct sysmon_envsys   *sc_sme;
    132 	envsys_data_t	       *sc_sensor;
    133 	uint32_t	       *sc_arg;
    134 	uint32_t		sc_val;
    135 };
    136 
    137 static int	wmi_hp_match(device_t, cfdata_t, void *);
    138 static void	wmi_hp_attach(device_t, device_t, void *);
    139 static int	wmi_hp_detach(device_t, int);
    140 static bool	wmi_hp_suspend(device_t, const pmf_qual_t *);
    141 static bool	wmi_hp_resume(device_t, const pmf_qual_t *);
    142 static void	wmi_hp_notify_handler(ACPI_HANDLE, uint32_t, void *);
    143 static void	wmi_hp_hotkey(void *);
    144 static bool	wmi_hp_method(struct wmi_hp_softc *);
    145 static bool	wmi_hp_method_read(struct wmi_hp_softc *, uint8_t);
    146 
    147 #if 0
    148 static bool	wmi_hp_method_write(struct wmi_hp_softc *, uint8_t, uint32_t);
    149 #endif
    150 
    151 static void	wmi_hp_sensor_init(struct wmi_hp_softc *);
    152 static void	wmi_hp_sensor_update(void *);
    153 
    154 CFATTACH_DECL_NEW(wmihp, sizeof(struct wmi_hp_softc),
    155     wmi_hp_match, wmi_hp_attach, wmi_hp_detach, NULL);
    156 
    157 static int
    158 wmi_hp_match(device_t parent, cfdata_t match, void *aux)
    159 {
    160 	return acpi_wmi_guid_match(parent, WMI_HP_GUID_METHOD);
    161 }
    162 
    163 static void
    164 wmi_hp_attach(device_t parent, device_t self, void *aux)
    165 {
    166 	struct wmi_hp_softc *sc = device_private(self);
    167 	ACPI_STATUS rv = AE_ERROR;
    168 
    169 	sc->sc_dev = self;
    170 	sc->sc_parent = parent;
    171 
    172 	sc->sc_sme = NULL;
    173 	sc->sc_sensor = NULL;
    174 
    175 	sc->sc_arg = kmem_alloc(WMI_HP_METHOD_ARG_SIZE, KM_SLEEP);
    176 
    177 	if (sc->sc_arg == NULL)
    178 		return;
    179 
    180 	aprint_naive("\n");
    181 	aprint_normal(": HP WMI mappings\n");
    182 
    183 	(void)pmf_device_register(sc->sc_dev, wmi_hp_suspend, wmi_hp_resume);
    184 
    185 	if (acpi_wmi_guid_match(parent, WMI_HP_GUID_EVENT) != 0)
    186 		rv = acpi_wmi_event_register(parent, wmi_hp_notify_handler);
    187 
    188 	if (ACPI_FAILURE(rv))
    189 		return;
    190 
    191 	sc->sc_sensor = kmem_alloc(WMI_HP_SENSOR_SIZE, KM_SLEEP);
    192 
    193 	if (sc->sc_sensor == NULL)
    194 		return;
    195 
    196 	wmi_hp_sensor_init(sc);
    197 }
    198 
    199 static int
    200 wmi_hp_detach(device_t self, int flags)
    201 {
    202 	struct wmi_hp_softc *sc = device_private(self);
    203 	device_t parent = sc->sc_parent;
    204 
    205 	(void)acpi_wmi_event_deregister(parent);
    206 
    207 	if (sc->sc_sme != NULL)
    208 		sysmon_envsys_unregister(sc->sc_sme);
    209 
    210 	if (sc->sc_sensor != NULL)
    211 		kmem_free(sc->sc_sensor, WMI_HP_SENSOR_SIZE);
    212 
    213 	if (sc->sc_arg != NULL)
    214 		kmem_free(sc->sc_arg, WMI_HP_METHOD_ARG_SIZE);
    215 
    216 	pmf_device_deregister(self);
    217 
    218 	return 0;
    219 }
    220 
    221 static bool
    222 wmi_hp_suspend(device_t self, const pmf_qual_t *qual)
    223 {
    224 	struct wmi_hp_softc *sc = device_private(self);
    225 	device_t parent = sc->sc_parent;
    226 
    227 	if (sc->sc_sensor != NULL)
    228 		(void)acpi_wmi_event_deregister(parent);
    229 
    230 	return true;
    231 }
    232 
    233 static bool
    234 wmi_hp_resume(device_t self, const pmf_qual_t *qual)
    235 {
    236 	struct wmi_hp_softc *sc = device_private(self);
    237 	device_t parent = sc->sc_parent;
    238 
    239 	if (sc->sc_sensor != NULL)
    240 		(void)acpi_wmi_event_register(parent, wmi_hp_notify_handler);
    241 
    242 	return true;
    243 }
    244 
    245 static void
    246 wmi_hp_notify_handler(ACPI_HANDLE hdl, uint32_t evt, void *aux)
    247 {
    248 	static const int handler = OSL_NOTIFY_HANDLER;
    249 	struct wmi_hp_softc *sc;
    250 	device_t self = aux;
    251 	ACPI_OBJECT *obj;
    252 	ACPI_BUFFER buf;
    253 	ACPI_STATUS rv;
    254 	uint32_t val;
    255 
    256 	buf.Pointer = NULL;
    257 
    258 	sc = device_private(self);
    259 	rv = acpi_wmi_event_get(sc->sc_parent, evt, &buf);
    260 
    261 	if (ACPI_FAILURE(rv))
    262 		goto out;
    263 
    264 	obj = buf.Pointer;
    265 
    266 	if (obj->Type != ACPI_TYPE_BUFFER) {
    267 		rv = AE_TYPE;
    268 		goto out;
    269 	}
    270 
    271 	if (obj->Buffer.Length != 8) {
    272 		rv = AE_LIMIT;
    273 		goto out;
    274 	}
    275 
    276 	val = *((uint8_t *)obj->Buffer.Pointer);
    277 
    278 	if (val == 0x00) {
    279 		rv = AE_BAD_DATA;
    280 		goto out;
    281 	}
    282 
    283 	switch (val) {
    284 
    285 	case WMI_HP_EVENT_SWITCH:
    286 		rv = AcpiOsExecute(handler, wmi_hp_sensor_update, self);
    287 		break;
    288 
    289 	case WMI_HP_EVENT_HOTKEY:
    290 		rv = AcpiOsExecute(handler, wmi_hp_hotkey, self);
    291 		break;
    292 
    293 	case WMI_HP_EVENT_DOCK:	/* FALLTHROUGH */
    294 
    295 	default:
    296 		aprint_debug_dev(sc->sc_dev, "unknown event 0x%02X\n", evt);
    297 		break;
    298 	}
    299 
    300 out:
    301 	if (buf.Pointer != NULL)
    302 		ACPI_FREE(buf.Pointer);
    303 
    304 	if (ACPI_FAILURE(rv))
    305 		aprint_error_dev(sc->sc_dev, "failed to get data for "
    306 		    "event 0x%02X: %s\n", evt, AcpiFormatException(rv));
    307 }
    308 
    309 static void
    310 wmi_hp_hotkey(void *aux)
    311 {
    312 	struct wmi_hp_softc *sc;
    313 	device_t self = aux;
    314 
    315 	sc = device_private(self);
    316 
    317 	if (wmi_hp_method_read(sc, WMI_HP_METHOD_CMD_HOTKEY) != true)
    318 		return;
    319 
    320 	switch (sc->sc_val) {
    321 
    322 	case WMI_HP_HOTKEY_BRIGHTNESS_UP:
    323 		pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP);
    324 		break;
    325 
    326 	case WMI_HP_HOTKEY_BRIGHTNESS_DOWN:
    327 		pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN);
    328 		break;
    329 
    330 	default:
    331 		aprint_debug_dev(self, "unknown hotkey 0x%02x\n", sc->sc_val);
    332 		break;
    333 	}
    334 }
    335 
    336 static bool
    337 wmi_hp_method(struct wmi_hp_softc *sc)
    338 {
    339 	ACPI_BUFFER ibuf, obuf;
    340 	ACPI_STATUS rv = AE_OK;
    341 	ACPI_OBJECT *obj;
    342 	uint32_t cmd, *val;
    343 
    344 	cmd = sc->sc_arg[2];
    345 
    346 	KDASSERT(cmd != 0);
    347 	KDASSERT(sc->sc_arg[0] == WMI_HP_METHOD_ARG_MAGIC);
    348 
    349 	obuf.Pointer = NULL;
    350 	ibuf.Pointer = sc->sc_arg;
    351 	ibuf.Length = WMI_HP_METHOD_ARG_SIZE;
    352 
    353 	rv = acpi_wmi_method(sc->sc_parent,
    354 	    WMI_HP_GUID_METHOD, 0, 3, &ibuf, &obuf);
    355 
    356 	if (ACPI_FAILURE(rv))
    357 		goto out;
    358 
    359 	obj = obuf.Pointer;
    360 
    361 	if (obj->Type != ACPI_TYPE_BUFFER) {
    362 		rv = AE_TYPE;
    363 		goto out;
    364 	}
    365 
    366 	/*
    367 	 *	val[0]	unknown
    368 	 *	val[1]	error code
    369 	 *	val[2]	return value
    370 	 */
    371 	val = (uint32_t *)obj->Buffer.Pointer;
    372 
    373 	if (val[1] != 0) {
    374 		rv = AE_ERROR;
    375 		goto out;
    376 	}
    377 
    378 	sc->sc_val = val[2];
    379 
    380 out:
    381 	if (obuf.Pointer != NULL)
    382 		ACPI_FREE(obuf.Pointer);
    383 
    384 	if (ACPI_FAILURE(rv)) {
    385 		aprint_debug_dev(sc->sc_dev, "failed to evaluate method "
    386 		    "(cmd = 0x%02X): %s\n", cmd, AcpiFormatException(rv));
    387 		return false;
    388 	}
    389 
    390 	return true;
    391 }
    392 
    393 static bool
    394 wmi_hp_method_read(struct wmi_hp_softc *sc, uint8_t cmd)
    395 {
    396 
    397 	sc->sc_arg[0] = WMI_HP_METHOD_ARG_MAGIC;
    398 	sc->sc_arg[1] = WMI_HP_METHOD_ARG_READ;
    399 	sc->sc_arg[2] = cmd;
    400 	sc->sc_arg[3] = 0;
    401 	sc->sc_arg[4] = 0;
    402 
    403 	return wmi_hp_method(sc);
    404 }
    405 
    406 #if 0
    407 static bool
    408 wmi_hp_method_write(struct wmi_hp_softc *sc, uint8_t cmd, uint32_t val)
    409 {
    410 
    411 	sc->sc_arg[0] = WMI_HP_METHOD_ARG_MAGIC;
    412 	sc->sc_arg[1] = WMI_HP_METHOD_ARG_WRITE;
    413 	sc->sc_arg[2] = cmd;
    414 	sc->sc_arg[3] = WMI_HP_METHOD_ARG_WRITE_SIZE;
    415 	sc->sc_arg[4] = val;
    416 
    417 	return wmi_hp_method(sc);
    418 }
    419 #endif
    420 
    421 static void
    422 wmi_hp_sensor_init(struct wmi_hp_softc *sc)
    423 {
    424 	int i, j, sensor[3];
    425 
    426 	const char desc[][ENVSYS_DESCLEN] = {
    427 		"wireless", "bluetooth", "mobile"
    428 	};
    429 
    430 	KDASSERT(sc->sc_sme == NULL);
    431 	KDASSERT(sc->sc_sensor != NULL);
    432 
    433 	(void)memset(sc->sc_sensor, 0, WMI_HP_SENSOR_SIZE);
    434 
    435 	if (wmi_hp_method_read(sc, WMI_HP_METHOD_CMD_SWITCH) != true)
    436 		return;
    437 
    438 	sc->sc_sme = sysmon_envsys_create();
    439 
    440 	sensor[0] = WMI_HP_SWITCH_WLAN;
    441 	sensor[1] = WMI_HP_SWITCH_BT;
    442 	sensor[2] = WMI_HP_SWITCH_WWAN;
    443 
    444 	CTASSERT(WMI_HP_SENSOR_WLAN == 0);
    445 	CTASSERT(WMI_HP_SENSOR_BT   == 1);
    446 	CTASSERT(WMI_HP_SENSOR_WWAN == 2);
    447 
    448 	for (i = j = 0; i < 3; i++) {
    449 
    450 		if ((sc->sc_val & sensor[i]) == 0)
    451 			continue;
    452 
    453 		(void)strlcpy(sc->sc_sensor[i].desc, desc[i], ENVSYS_DESCLEN);
    454 
    455 		sc->sc_sensor[i].state = ENVSYS_SINVALID;
    456 		sc->sc_sensor[i].units = ENVSYS_INDICATOR;
    457 
    458 		if (sysmon_envsys_sensor_attach(sc->sc_sme,
    459 			&sc->sc_sensor[i]) != 0)
    460 			goto fail;
    461 
    462 		j++;
    463 	}
    464 
    465 	if (j == 0)
    466 		goto fail;
    467 
    468 	sc->sc_sme->sme_flags = SME_DISABLE_REFRESH;
    469 	sc->sc_sme->sme_name = device_xname(sc->sc_dev);
    470 
    471 	if (sysmon_envsys_register(sc->sc_sme) != 0)
    472 		goto fail;
    473 
    474 	wmi_hp_sensor_update(sc->sc_dev);
    475 
    476 	return;
    477 
    478 fail:
    479 	aprint_debug_dev(sc->sc_dev, "failed to initialize sysmon\n");
    480 
    481 	sysmon_envsys_destroy(sc->sc_sme);
    482 	kmem_free(sc->sc_sensor, WMI_HP_SENSOR_SIZE);
    483 
    484 	sc->sc_sme = NULL;
    485 	sc->sc_sensor = NULL;
    486 }
    487 
    488 static void
    489 wmi_hp_sensor_update(void *aux)
    490 {
    491 	struct wmi_hp_softc *sc;
    492 	device_t self = aux;
    493 
    494 	sc = device_private(self);
    495 
    496 	if (sc->sc_sme == NULL || sc->sc_sensor == NULL)
    497 		return;
    498 
    499 	if (wmi_hp_method_read(sc, WMI_HP_METHOD_CMD_SWITCH) != true) {
    500 		sc->sc_sensor[WMI_HP_SENSOR_WLAN].state = ENVSYS_SINVALID;
    501 		sc->sc_sensor[WMI_HP_SENSOR_WWAN].state = ENVSYS_SINVALID;
    502 		sc->sc_sensor[WMI_HP_SENSOR_BT].state = ENVSYS_SINVALID;
    503 		return;
    504 	}
    505 
    506 	if ((sc->sc_val & WMI_HP_SWITCH_WLAN) != 0) {
    507 		sc->sc_sensor[WMI_HP_SENSOR_WLAN].value_cur = 0;
    508 
    509 		if ((sc->sc_val & WMI_HP_SWITCH_MASK_WLAN_ONAIR) != 0)
    510 			sc->sc_sensor[WMI_HP_SENSOR_WLAN].value_cur = 1;
    511 
    512 		sc->sc_sensor[WMI_HP_SENSOR_WLAN].state = ENVSYS_SVALID;
    513 	}
    514 
    515 	if ((sc->sc_val & WMI_HP_SWITCH_BT) != 0) {
    516 		sc->sc_sensor[WMI_HP_SENSOR_BT].value_cur = 0;
    517 
    518 		if ((sc->sc_val & WMI_HP_SWITCH_MASK_BT_ONAIR) != 0)
    519 			sc->sc_sensor[WMI_HP_SENSOR_BT].value_cur = 1;
    520 
    521 		sc->sc_sensor[WMI_HP_SENSOR_BT].state = ENVSYS_SVALID;
    522 	}
    523 
    524 	if ((sc->sc_val & WMI_HP_SWITCH_WWAN) != 0) {
    525 		sc->sc_sensor[WMI_HP_SENSOR_WWAN].value_cur = 0;
    526 
    527 		if ((sc->sc_val & WMI_HP_SWITCH_MASK_WWAN_ONAIR) != 0)
    528 			sc->sc_sensor[WMI_HP_SENSOR_WWAN].value_cur = 1;
    529 
    530 		sc->sc_sensor[WMI_HP_SENSOR_WWAN].state = ENVSYS_SVALID;
    531 	}
    532 }
    533 
    534 #ifdef _MODULE
    535 
    536 MODULE(MODULE_CLASS_DRIVER, wmihp, NULL);
    537 CFDRIVER_DECL(wmihp, DV_DULL, NULL);
    538 
    539 static int wmihploc[] = { -1 };
    540 extern struct cfattach wmihp_ca;
    541 
    542 static struct cfparent wmiparent = {
    543 	"acpiwmibus", NULL, DVUNIT_ANY
    544 };
    545 
    546 static struct cfdata wmihp_cfdata[] = {
    547 	{
    548 		.cf_name = "wmihp",
    549 		.cf_atname = "wmihp",
    550 		.cf_unit = 0,
    551 		.cf_fstate = FSTATE_STAR,
    552 		.cf_loc = wmihploc,
    553 		.cf_flags = 0,
    554 		.cf_pspec = &wmiparent,
    555 	},
    556 
    557 	{ NULL }
    558 };
    559 
    560 static int
    561 wmihp_modcmd(modcmd_t cmd, void *opaque)
    562 {
    563 	int err;
    564 
    565 	switch (cmd) {
    566 
    567 	case MODULE_CMD_INIT:
    568 
    569 		err = config_cfdriver_attach(&wmihp_cd);
    570 
    571 		if (err != 0)
    572 			return err;
    573 
    574 		err = config_cfattach_attach("wmihp", &wmihp_ca);
    575 
    576 		if (err != 0) {
    577 			config_cfdriver_detach(&wmihp_cd);
    578 			return err;
    579 		}
    580 
    581 		err = config_cfdata_attach(wmihp_cfdata, 1);
    582 
    583 		if (err != 0) {
    584 			config_cfattach_detach("wmihp", &wmihp_ca);
    585 			config_cfdriver_detach(&wmihp_cd);
    586 			return err;
    587 		}
    588 
    589 		return 0;
    590 
    591 	case MODULE_CMD_FINI:
    592 
    593 		err = config_cfdata_detach(wmihp_cfdata);
    594 
    595 		if (err != 0)
    596 			return err;
    597 
    598 		config_cfattach_detach("wmihp", &wmihp_ca);
    599 		config_cfdriver_detach(&wmihp_cd);
    600 
    601 		return 0;
    602 
    603 	default:
    604 		return ENOTTY;
    605 	}
    606 }
    607 
    608 #endif	/* _MODULE */
    609