acpi_acad.c revision 1.42
1 /* $NetBSD: acpi_acad.c,v 1.42 2010/03/05 14:00:16 jruoho Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * ACPI AC Adapter driver. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.42 2010/03/05 14:00:16 jruoho Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/device.h> 47 #include <sys/module.h> 48 #include <sys/mutex.h> 49 #include <sys/systm.h> 50 51 #include <dev/acpi/acpireg.h> 52 #include <dev/acpi/acpivar.h> 53 54 #define _COMPONENT ACPI_ACAD_COMPONENT 55 ACPI_MODULE_NAME ("acpi_acad") 56 57 struct acpiacad_softc { 58 struct acpi_devnode *sc_node; 59 struct sysmon_envsys *sc_sme; 60 struct sysmon_pswitch sc_smpsw; 61 envsys_data_t sc_sensor; 62 kmutex_t sc_mutex; 63 int sc_status; 64 }; 65 66 static const char * const acad_hid[] = { 67 "ACPI0003", 68 NULL 69 }; 70 71 static int acpiacad_match(device_t, cfdata_t, void *); 72 static void acpiacad_attach(device_t, device_t, void *); 73 static int acpiacad_detach(device_t, int); 74 static bool acpiacad_resume(device_t, const pmf_qual_t *); 75 static void acpiacad_get_status(void *); 76 static void acpiacad_notify_handler(ACPI_HANDLE, uint32_t, void *); 77 static void acpiacad_init_envsys(device_t); 78 79 CFATTACH_DECL_NEW(acpiacad, sizeof(struct acpiacad_softc), 80 acpiacad_match, acpiacad_attach, acpiacad_detach, NULL); 81 82 /* 83 * acpiacad_match: 84 * 85 * Autoconfiguration `match' routine. 86 */ 87 static int 88 acpiacad_match(device_t parent, cfdata_t match, void *aux) 89 { 90 struct acpi_attach_args *aa = aux; 91 92 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 93 return 0; 94 95 return acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid); 96 } 97 98 /* 99 * acpiacad_attach: 100 * 101 * Autoconfiguration `attach' routine. 102 */ 103 static void 104 acpiacad_attach(device_t parent, device_t self, void *aux) 105 { 106 struct acpiacad_softc *sc = device_private(self); 107 struct acpi_attach_args *aa = aux; 108 ACPI_STATUS rv; 109 110 aprint_naive(": ACPI AC Adapter\n"); 111 aprint_normal(": ACPI AC Adapter\n"); 112 113 sc->sc_sme = NULL; 114 sc->sc_status = -1; 115 sc->sc_node = aa->aa_node; 116 117 mutex_init(&sc->sc_mutex, MUTEX_DEFAULT, IPL_NONE); 118 119 sc->sc_smpsw.smpsw_name = device_xname(self); 120 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER; 121 122 (void)sysmon_pswitch_register(&sc->sc_smpsw); 123 (void)pmf_device_register(self, NULL, acpiacad_resume); 124 125 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 126 ACPI_ALL_NOTIFY, acpiacad_notify_handler, self); 127 128 if (ACPI_SUCCESS(rv)) 129 acpiacad_init_envsys(self); 130 } 131 132 /* 133 * acpiacad_detach: 134 * 135 * Autoconfiguration `detach' routine. 136 */ 137 static int 138 acpiacad_detach(device_t self, int flags) 139 { 140 struct acpiacad_softc *sc = device_private(self); 141 ACPI_STATUS rv; 142 143 rv = AcpiRemoveNotifyHandler(sc->sc_node->ad_handle, 144 ACPI_ALL_NOTIFY, acpiacad_notify_handler); 145 146 if (ACPI_FAILURE(rv)) 147 return EBUSY; 148 149 mutex_destroy(&sc->sc_mutex); 150 151 if (sc->sc_sme != NULL) 152 sysmon_envsys_unregister(sc->sc_sme); 153 154 pmf_device_deregister(self); 155 sysmon_pswitch_unregister(&sc->sc_smpsw); 156 157 return 0; 158 } 159 160 /* 161 * acpiacad_resume: 162 * 163 * Queue a new status check. 164 */ 165 static bool 166 acpiacad_resume(device_t dv, const pmf_qual_t *qual) 167 { 168 169 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 170 171 return true; 172 } 173 174 /* 175 * acpiacad_get_status: 176 * 177 * Get, and possibly display, the current AC line status. 178 */ 179 static void 180 acpiacad_get_status(void *arg) 181 { 182 device_t dv = arg; 183 struct acpiacad_softc *sc = device_private(dv); 184 ACPI_INTEGER status; 185 ACPI_STATUS rv; 186 187 mutex_enter(&sc->sc_mutex); 188 189 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status); 190 191 if (ACPI_FAILURE(rv)) 192 goto fail; 193 194 if (status != 0 && status != 1) { 195 rv = AE_BAD_VALUE; 196 goto fail; 197 } 198 199 if (sc->sc_status != status) { 200 201 /* 202 * If status has changed, send the event: 203 * 204 * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. 205 * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. 206 */ 207 sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? 208 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); 209 210 aprint_debug_dev(dv, "AC adapter %sconnected\n", 211 status == 0 ? "not " : ""); 212 } 213 214 sc->sc_status = status; 215 sc->sc_sensor.state = ENVSYS_SVALID; 216 sc->sc_sensor.value_cur = sc->sc_status; 217 218 mutex_exit(&sc->sc_mutex); 219 220 return; 221 222 fail: 223 sc->sc_status = -1; 224 sc->sc_sensor.state = ENVSYS_SINVALID; 225 226 aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n", 227 AcpiFormatException(rv)); 228 229 mutex_exit(&sc->sc_mutex); 230 } 231 232 /* 233 * acpiacad_notify_handler: 234 * 235 * Callback from ACPI interrupt handler to notify us of an event. 236 */ 237 static void 238 acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 239 { 240 static const int handler = OSL_NOTIFY_HANDLER; 241 device_t dv = context; 242 243 switch (notify) { 244 /* 245 * XXX So, BusCheck is not exactly what I would expect, 246 * but at least my IBM T21 sends it on AC adapter status 247 * change. --thorpej (at) wasabisystems.com 248 */ 249 /* 250 * XXX My Acer TravelMate 291 sends DeviceCheck on AC 251 * adapter status change. 252 * --rpaulo (at) NetBSD.org 253 */ 254 /* 255 * XXX Sony VAIO VGN-N250E sends BatteryInformationChanged on AC 256 * adapter status change. 257 * --jmcneill (at) NetBSD.org 258 */ 259 case ACPI_NOTIFY_BusCheck: 260 case ACPI_NOTIFY_DeviceCheck: 261 case ACPI_NOTIFY_PowerSourceStatusChanged: 262 case ACPI_NOTIFY_BatteryInformationChanged: 263 (void)AcpiOsExecute(handler, acpiacad_get_status, dv); 264 break; 265 266 default: 267 aprint_error_dev(dv, "unknown notify 0x%02X\n", notify); 268 } 269 } 270 271 static void 272 acpiacad_init_envsys(device_t dv) 273 { 274 struct acpiacad_softc *sc = device_private(dv); 275 276 sc->sc_sme = sysmon_envsys_create(); 277 278 sc->sc_sensor.state = ENVSYS_SINVALID; 279 sc->sc_sensor.units = ENVSYS_INDICATOR; 280 281 (void)strlcpy(sc->sc_sensor.desc, "connected", ENVSYS_DESCLEN); 282 283 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) 284 goto fail; 285 286 sc->sc_sme->sme_name = device_xname(dv); 287 sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; 288 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; 289 290 if (sysmon_envsys_register(sc->sc_sme) != 0) 291 goto fail; 292 293 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 294 295 return; 296 297 fail: 298 aprint_error_dev(dv, "failed to initialize sysmon\n"); 299 sysmon_envsys_destroy(sc->sc_sme); 300 sc->sc_sme = NULL; 301 } 302 303 #ifdef _MODULE 304 305 MODULE(MODULE_CLASS_DRIVER, acpiacad, NULL); 306 CFDRIVER_DECL(acpiacad, DV_DULL, NULL); 307 308 static int acpiacadloc[] = { -1 }; 309 extern struct cfattach acpiacad_ca; 310 311 static struct cfparent acpiparent = { 312 "acpinodebus", NULL, DVUNIT_ANY 313 }; 314 315 static struct cfdata acpiacad_cfdata[] = { 316 { 317 .cf_name = "acpiacad", 318 .cf_atname = "acpiacad", 319 .cf_unit = 0, 320 .cf_fstate = FSTATE_STAR, 321 .cf_loc = acpiacadloc, 322 .cf_flags = 0, 323 .cf_pspec = &acpiparent, 324 }, 325 326 { NULL } 327 }; 328 329 static int 330 acpiacad_modcmd(modcmd_t cmd, void *context) 331 { 332 int err; 333 334 switch (cmd) { 335 336 case MODULE_CMD_INIT: 337 338 err = config_cfdriver_attach(&acpiacad_cd); 339 340 if (err != 0) 341 return err; 342 343 err = config_cfattach_attach("acpiacad", &acpiacad_ca); 344 345 if (err != 0) { 346 config_cfdriver_detach(&acpiacad_cd); 347 return err; 348 } 349 350 err = config_cfdata_attach(acpiacad_cfdata, 1); 351 352 if (err != 0) { 353 config_cfattach_detach("acpiacad", &acpiacad_ca); 354 config_cfdriver_detach(&acpiacad_cd); 355 return err; 356 } 357 358 return 0; 359 360 case MODULE_CMD_FINI: 361 362 err = config_cfdata_detach(acpiacad_cfdata); 363 364 if (err != 0) 365 return err; 366 367 config_cfattach_detach("acpiacad", &acpiacad_ca); 368 config_cfdriver_detach(&acpiacad_cd); 369 370 return 0; 371 372 default: 373 return ENOTTY; 374 } 375 } 376 377 #endif /* _MODULE */ 378
Indexes created Wed Sep 24 02:09:48 GMT 2025