acpi_acad.c revision 1.41
1 /* $NetBSD: acpi_acad.c,v 1.41 2010/02/28 17:22:41 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 1.41 2010/02/28 17:22:41 jruoho Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 #include <sys/module.h> 49 #include <sys/mutex.h> 50 51 #include <dev/acpi/acpica.h> 52 #include <dev/acpi/acpireg.h> 53 #include <dev/acpi/acpivar.h> 54 55 #include <dev/sysmon/sysmonvar.h> 56 57 #define _COMPONENT ACPI_ACAD_COMPONENT 58 ACPI_MODULE_NAME ("acpi_acad") 59 60 struct acpiacad_softc { 61 struct acpi_devnode *sc_node; 62 struct sysmon_envsys *sc_sme; 63 struct sysmon_pswitch sc_smpsw; 64 envsys_data_t sc_sensor; 65 kmutex_t sc_mutex; 66 int sc_status; 67 }; 68 69 static const char * const acad_hid[] = { 70 "ACPI0003", 71 NULL 72 }; 73 74 static int acpiacad_match(device_t, cfdata_t, void *); 75 static void acpiacad_attach(device_t, device_t, void *); 76 static int acpiacad_detach(device_t, int); 77 static bool acpiacad_resume(device_t, const pmf_qual_t *); 78 static void acpiacad_get_status(void *); 79 static void acpiacad_notify_handler(ACPI_HANDLE, uint32_t, void *); 80 static void acpiacad_init_envsys(device_t); 81 82 CFATTACH_DECL_NEW(acpiacad, sizeof(struct acpiacad_softc), 83 acpiacad_match, acpiacad_attach, acpiacad_detach, NULL); 84 85 /* 86 * acpiacad_match: 87 * 88 * Autoconfiguration `match' routine. 89 */ 90 static int 91 acpiacad_match(device_t parent, cfdata_t match, void *aux) 92 { 93 struct acpi_attach_args *aa = aux; 94 95 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 96 return 0; 97 98 return acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid); 99 } 100 101 /* 102 * acpiacad_attach: 103 * 104 * Autoconfiguration `attach' routine. 105 */ 106 static void 107 acpiacad_attach(device_t parent, device_t self, void *aux) 108 { 109 struct acpiacad_softc *sc = device_private(self); 110 struct acpi_attach_args *aa = aux; 111 ACPI_STATUS rv; 112 113 aprint_naive(": ACPI AC Adapter\n"); 114 aprint_normal(": ACPI AC Adapter\n"); 115 116 sc->sc_sme = NULL; 117 sc->sc_status = -1; 118 sc->sc_node = aa->aa_node; 119 120 mutex_init(&sc->sc_mutex, MUTEX_DEFAULT, IPL_NONE); 121 122 sc->sc_smpsw.smpsw_name = device_xname(self); 123 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER; 124 125 (void)sysmon_pswitch_register(&sc->sc_smpsw); 126 (void)pmf_device_register(self, NULL, acpiacad_resume); 127 128 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 129 ACPI_ALL_NOTIFY, acpiacad_notify_handler, self); 130 131 if (ACPI_SUCCESS(rv)) 132 acpiacad_init_envsys(self); 133 } 134 135 /* 136 * acpiacad_detach: 137 * 138 * Autoconfiguration `detach' routine. 139 */ 140 static int 141 acpiacad_detach(device_t self, int flags) 142 { 143 struct acpiacad_softc *sc = device_private(self); 144 ACPI_STATUS rv; 145 146 rv = AcpiRemoveNotifyHandler(sc->sc_node->ad_handle, 147 ACPI_ALL_NOTIFY, acpiacad_notify_handler); 148 149 if (ACPI_FAILURE(rv)) 150 return EBUSY; 151 152 mutex_destroy(&sc->sc_mutex); 153 154 if (sc->sc_sme != NULL) 155 sysmon_envsys_unregister(sc->sc_sme); 156 157 pmf_device_deregister(self); 158 sysmon_pswitch_unregister(&sc->sc_smpsw); 159 160 return 0; 161 } 162 163 /* 164 * acpiacad_resume: 165 * 166 * Queue a new status check. 167 */ 168 static bool 169 acpiacad_resume(device_t dv, const pmf_qual_t *qual) 170 { 171 172 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 173 174 return true; 175 } 176 177 /* 178 * acpiacad_get_status: 179 * 180 * Get, and possibly display, the current AC line status. 181 */ 182 static void 183 acpiacad_get_status(void *arg) 184 { 185 device_t dv = arg; 186 struct acpiacad_softc *sc = device_private(dv); 187 ACPI_INTEGER status; 188 ACPI_STATUS rv; 189 190 mutex_enter(&sc->sc_mutex); 191 192 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status); 193 194 if (ACPI_FAILURE(rv)) 195 goto fail; 196 197 if (status != 0 && status != 1) { 198 rv = AE_BAD_VALUE; 199 goto fail; 200 } 201 202 if (sc->sc_status != status) { 203 204 /* 205 * If status has changed, send the event: 206 * 207 * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. 208 * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. 209 */ 210 sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? 211 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); 212 213 aprint_debug_dev(dv, "AC adapter %sconnected\n", 214 status == 0 ? "not " : ""); 215 } 216 217 sc->sc_status = status; 218 sc->sc_sensor.state = ENVSYS_SVALID; 219 sc->sc_sensor.value_cur = sc->sc_status; 220 221 mutex_exit(&sc->sc_mutex); 222 223 return; 224 225 fail: 226 sc->sc_status = -1; 227 sc->sc_sensor.state = ENVSYS_SINVALID; 228 229 aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n", 230 AcpiFormatException(rv)); 231 232 mutex_exit(&sc->sc_mutex); 233 } 234 235 /* 236 * acpiacad_notify_handler: 237 * 238 * Callback from ACPI interrupt handler to notify us of an event. 239 */ 240 static void 241 acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 242 { 243 static const int handler = OSL_NOTIFY_HANDLER; 244 device_t dv = context; 245 246 switch (notify) { 247 /* 248 * XXX So, BusCheck is not exactly what I would expect, 249 * but at least my IBM T21 sends it on AC adapter status 250 * change. --thorpej (at) wasabisystems.com 251 */ 252 /* 253 * XXX My Acer TravelMate 291 sends DeviceCheck on AC 254 * adapter status change. 255 * --rpaulo (at) NetBSD.org 256 */ 257 /* 258 * XXX Sony VAIO VGN-N250E sends BatteryInformationChanged on AC 259 * adapter status change. 260 * --jmcneill (at) NetBSD.org 261 */ 262 case ACPI_NOTIFY_BusCheck: 263 case ACPI_NOTIFY_DeviceCheck: 264 case ACPI_NOTIFY_PowerSourceStatusChanged: 265 case ACPI_NOTIFY_BatteryInformationChanged: 266 (void)AcpiOsExecute(handler, acpiacad_get_status, dv); 267 break; 268 269 default: 270 aprint_error_dev(dv, "unknown notify 0x%02X\n", notify); 271 } 272 } 273 274 static void 275 acpiacad_init_envsys(device_t dv) 276 { 277 struct acpiacad_softc *sc = device_private(dv); 278 279 sc->sc_sme = sysmon_envsys_create(); 280 281 sc->sc_sensor.state = ENVSYS_SINVALID; 282 sc->sc_sensor.units = ENVSYS_INDICATOR; 283 284 (void)strlcpy(sc->sc_sensor.desc, "connected", ENVSYS_DESCLEN); 285 286 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) 287 goto fail; 288 289 sc->sc_sme->sme_name = device_xname(dv); 290 sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; 291 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; 292 293 if (sysmon_envsys_register(sc->sc_sme) != 0) 294 goto fail; 295 296 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 297 298 return; 299 300 fail: 301 aprint_error_dev(dv, "failed to initialize sysmon\n"); 302 sysmon_envsys_destroy(sc->sc_sme); 303 sc->sc_sme = NULL; 304 } 305 306 #ifdef _MODULE 307 308 MODULE(MODULE_CLASS_DRIVER, acpiacad, NULL); 309 CFDRIVER_DECL(acpiacad, DV_DULL, NULL); 310 311 static int acpiacadloc[] = { -1 }; 312 extern struct cfattach acpiacad_ca; 313 314 static struct cfparent acpiparent = { 315 "acpinodebus", NULL, DVUNIT_ANY 316 }; 317 318 static struct cfdata acpiacad_cfdata[] = { 319 { 320 .cf_name = "acpiacad", 321 .cf_atname = "acpiacad", 322 .cf_unit = 0, 323 .cf_fstate = FSTATE_STAR, 324 .cf_loc = acpiacadloc, 325 .cf_flags = 0, 326 .cf_pspec = &acpiparent, 327 }, 328 329 { NULL } 330 }; 331 332 static int 333 acpiacad_modcmd(modcmd_t cmd, void *context) 334 { 335 int err; 336 337 switch (cmd) { 338 339 case MODULE_CMD_INIT: 340 341 err = config_cfdriver_attach(&acpiacad_cd); 342 343 if (err != 0) 344 return err; 345 346 err = config_cfattach_attach("acpiacad", &acpiacad_ca); 347 348 if (err != 0) { 349 config_cfdriver_detach(&acpiacad_cd); 350 return err; 351 } 352 353 err = config_cfdata_attach(acpiacad_cfdata, 1); 354 355 if (err != 0) { 356 config_cfattach_detach("acpiacad", &acpiacad_ca); 357 config_cfdriver_detach(&acpiacad_cd); 358 return err; 359 } 360 361 return 0; 362 363 case MODULE_CMD_FINI: 364 365 err = config_cfdata_detach(acpiacad_cfdata); 366 367 if (err != 0) 368 return err; 369 370 config_cfattach_detach("acpiacad", &acpiacad_ca); 371 config_cfdriver_detach(&acpiacad_cd); 372 373 return 0; 374 375 default: 376 return ENOTTY; 377 } 378 } 379 380 #endif /* _MODULE */ 381
Indexes created Wed Sep 24 05:09:52 GMT 2025