1 /* $NetBSD: acpi_acad.c,v 1.50 2011/06/03 18:40:41 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 1.50 2011/06/03 18:40:41 jruoho Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/device.h> 47 #include <sys/module.h> 48 #include <sys/systm.h> 49 50 #include <dev/acpi/acpireg.h> 51 #include <dev/acpi/acpivar.h> 52 53 #define _COMPONENT ACPI_ACAD_COMPONENT 54 ACPI_MODULE_NAME ("acpi_acad") 55 56 #define ACPI_NOTIFY_ACAD 0x80 57 #define ACPI_NOTIFY_ACAD_2 0x81 /* XXX. */ 58 59 struct acpiacad_softc { 60 struct acpi_devnode *sc_node; 61 struct sysmon_envsys *sc_sme; 62 struct sysmon_pswitch sc_smpsw; 63 envsys_data_t sc_sensor; 64 int sc_status; 65 }; 66 67 static const char * const acad_hid[] = { 68 "ACPI0003", 69 NULL 70 }; 71 72 static int acpiacad_match(device_t, cfdata_t, void *); 73 static void acpiacad_attach(device_t, device_t, void *); 74 static int acpiacad_detach(device_t, int); 75 static bool acpiacad_resume(device_t, const pmf_qual_t *); 76 static void acpiacad_get_status(void *); 77 static void acpiacad_notify_handler(ACPI_HANDLE, uint32_t, void *); 78 static void acpiacad_init_envsys(device_t); 79 80 CFATTACH_DECL_NEW(acpiacad, sizeof(struct acpiacad_softc), 81 acpiacad_match, acpiacad_attach, acpiacad_detach, NULL); 82 83 /* 84 * acpiacad_match: 85 * 86 * Autoconfiguration `match' routine. 87 */ 88 static int 89 acpiacad_match(device_t parent, cfdata_t match, void *aux) 90 { 91 struct acpi_attach_args *aa = aux; 92 93 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 94 return 0; 95 96 return acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid); 97 } 98 99 /* 100 * acpiacad_attach: 101 * 102 * Autoconfiguration `attach' routine. 103 */ 104 static void 105 acpiacad_attach(device_t parent, device_t self, void *aux) 106 { 107 struct acpiacad_softc *sc = device_private(self); 108 struct acpi_attach_args *aa = aux; 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 acpiacad_init_envsys(self); 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 (void)acpi_register_notify(sc->sc_node, acpiacad_notify_handler); 125 } 126 127 /* 128 * acpiacad_detach: 129 * 130 * Autoconfiguration `detach' routine. 131 */ 132 static int 133 acpiacad_detach(device_t self, int flags) 134 { 135 struct acpiacad_softc *sc = device_private(self); 136 137 acpi_deregister_notify(sc->sc_node); 138 139 if (sc->sc_sme != NULL) 140 sysmon_envsys_unregister(sc->sc_sme); 141 142 pmf_device_deregister(self); 143 sysmon_pswitch_unregister(&sc->sc_smpsw); 144 145 return 0; 146 } 147 148 /* 149 * acpiacad_resume: 150 * 151 * Queue a new status check. 152 */ 153 static bool 154 acpiacad_resume(device_t dv, const pmf_qual_t *qual) 155 { 156 157 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 158 159 return true; 160 } 161 162 /* 163 * acpiacad_get_status: 164 * 165 * Get, and possibly display, the current AC line status. 166 */ 167 static void 168 acpiacad_get_status(void *arg) 169 { 170 device_t dv = arg; 171 struct acpiacad_softc *sc = device_private(dv); 172 ACPI_INTEGER status; 173 ACPI_STATUS rv; 174 175 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status); 176 177 if (ACPI_FAILURE(rv)) 178 goto fail; 179 180 if (status != 0 && status != 1) { 181 rv = AE_BAD_VALUE; 182 goto fail; 183 } 184 185 if (sc->sc_status != (int)status) { 186 187 /* 188 * If status has changed, send the event: 189 * 190 * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. 191 * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. 192 */ 193 sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? 194 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); 195 196 aprint_debug_dev(dv, "AC adapter %sconnected\n", 197 status == 0 ? "not " : ""); 198 } 199 200 sc->sc_status = status; 201 sc->sc_sensor.state = ENVSYS_SVALID; 202 sc->sc_sensor.value_cur = sc->sc_status; 203 204 return; 205 206 fail: 207 sc->sc_status = -1; 208 sc->sc_sensor.state = ENVSYS_SINVALID; 209 210 aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n", 211 AcpiFormatException(rv)); 212 } 213 214 /* 215 * acpiacad_notify_handler: 216 * 217 * Callback from ACPI interrupt handler to notify us of an event. 218 */ 219 static void 220 acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 221 { 222 static const int handler = OSL_NOTIFY_HANDLER; 223 device_t dv = context; 224 225 switch (notify) { 226 /* 227 * XXX So, BusCheck is not exactly what I would expect, 228 * but at least my IBM T21 sends it on AC adapter status 229 * change. --thorpej@wasabisystems.com 230 */ 231 /* 232 * XXX My Acer TravelMate 291 sends DeviceCheck on AC 233 * adapter status change. 234 * --rpaulo@NetBSD.org 235 */ 236 /* 237 * XXX Sony VAIO VGN-N250E sends 0x81 on AC adapter status change. 238 * --jmcneill@NetBSD.org 239 */ 240 case ACPI_NOTIFY_ACAD: 241 case ACPI_NOTIFY_ACAD_2: 242 case ACPI_NOTIFY_BUS_CHECK: 243 case ACPI_NOTIFY_DEVICE_CHECK: 244 (void)AcpiOsExecute(handler, acpiacad_get_status, dv); 245 break; 246 247 case ACPI_NOTIFY_DEVICE_WAKE: 248 break; 249 250 default: 251 aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify); 252 } 253 } 254 255 static void 256 acpiacad_init_envsys(device_t dv) 257 { 258 struct acpiacad_softc *sc = device_private(dv); 259 260 sc->sc_sme = sysmon_envsys_create(); 261 262 sc->sc_sensor.state = ENVSYS_SINVALID; 263 sc->sc_sensor.units = ENVSYS_INDICATOR; 264 265 (void)strlcpy(sc->sc_sensor.desc, "connected", ENVSYS_DESCLEN); 266 267 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) 268 goto fail; 269 270 sc->sc_sme->sme_name = device_xname(dv); 271 sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; 272 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; 273 274 if (sysmon_envsys_register(sc->sc_sme) != 0) 275 goto fail; 276 277 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 278 279 return; 280 281 fail: 282 aprint_error_dev(dv, "failed to initialize sysmon\n"); 283 284 sysmon_envsys_destroy(sc->sc_sme); 285 sc->sc_sme = NULL; 286 } 287 288 MODULE(MODULE_CLASS_DRIVER, acpiacad, NULL); 289 290 #ifdef _MODULE 291 #include "ioconf.c" 292 #endif 293 294 static int 295 acpiacad_modcmd(modcmd_t cmd, void *aux) 296 { 297 int rv = 0; 298 299 switch (cmd) { 300 301 case MODULE_CMD_INIT: 302 303 #ifdef _MODULE 304 rv = config_init_component(cfdriver_ioconf_acpiacad, 305 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); 306 #endif 307 break; 308 309 case MODULE_CMD_FINI: 310 311 #ifdef _MODULE 312 rv = config_fini_component(cfdriver_ioconf_acpiacad, 313 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); 314 #endif 315 break; 316 317 default: 318 rv = ENOTTY; 319 } 320 321 return rv; 322 } 323