1 /* $NetBSD: acpi_acad.c,v 1.52 2021/01/29 15:20:13 thorpej 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 1.52 2021/01/29 15:20:13 thorpej 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 struct device_compatible_entry compat_data[] = { 68 { .compat = "ACPI0003" }, 69 DEVICE_COMPAT_EOL 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 return acpi_compatible_match(aa, compat_data); 94 } 95 96 /* 97 * acpiacad_attach: 98 * 99 * Autoconfiguration `attach' routine. 100 */ 101 static void 102 acpiacad_attach(device_t parent, device_t self, void *aux) 103 { 104 struct acpiacad_softc *sc = device_private(self); 105 struct acpi_attach_args *aa = aux; 106 107 aprint_naive(": ACPI AC Adapter\n"); 108 aprint_normal(": ACPI AC Adapter\n"); 109 110 sc->sc_sme = NULL; 111 sc->sc_status = -1; 112 sc->sc_node = aa->aa_node; 113 114 acpiacad_init_envsys(self); 115 116 sc->sc_smpsw.smpsw_name = device_xname(self); 117 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER; 118 119 (void)sysmon_pswitch_register(&sc->sc_smpsw); 120 (void)pmf_device_register(self, NULL, acpiacad_resume); 121 (void)acpi_register_notify(sc->sc_node, acpiacad_notify_handler); 122 } 123 124 /* 125 * acpiacad_detach: 126 * 127 * Autoconfiguration `detach' routine. 128 */ 129 static int 130 acpiacad_detach(device_t self, int flags) 131 { 132 struct acpiacad_softc *sc = device_private(self); 133 134 acpi_deregister_notify(sc->sc_node); 135 136 if (sc->sc_sme != NULL) 137 sysmon_envsys_unregister(sc->sc_sme); 138 139 pmf_device_deregister(self); 140 sysmon_pswitch_unregister(&sc->sc_smpsw); 141 142 return 0; 143 } 144 145 /* 146 * acpiacad_resume: 147 * 148 * Queue a new status check. 149 */ 150 static bool 151 acpiacad_resume(device_t dv, const pmf_qual_t *qual) 152 { 153 154 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 155 156 return true; 157 } 158 159 /* 160 * acpiacad_get_status: 161 * 162 * Get, and possibly display, the current AC line status. 163 */ 164 static void 165 acpiacad_get_status(void *arg) 166 { 167 device_t dv = arg; 168 struct acpiacad_softc *sc = device_private(dv); 169 ACPI_INTEGER status; 170 ACPI_STATUS rv; 171 172 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status); 173 174 if (ACPI_FAILURE(rv)) 175 goto fail; 176 177 if (status != 0 && status != 1) { 178 rv = AE_BAD_VALUE; 179 goto fail; 180 } 181 182 if (sc->sc_status != (int)status) { 183 184 /* 185 * If status has changed, send the event: 186 * 187 * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. 188 * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. 189 */ 190 sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? 191 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); 192 193 aprint_debug_dev(dv, "AC adapter %sconnected\n", 194 status == 0 ? "not " : ""); 195 } 196 197 sc->sc_status = status; 198 sc->sc_sensor.state = ENVSYS_SVALID; 199 sc->sc_sensor.value_cur = sc->sc_status; 200 201 return; 202 203 fail: 204 sc->sc_status = -1; 205 sc->sc_sensor.state = ENVSYS_SINVALID; 206 207 aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n", 208 AcpiFormatException(rv)); 209 } 210 211 /* 212 * acpiacad_notify_handler: 213 * 214 * Callback from ACPI interrupt handler to notify us of an event. 215 */ 216 static void 217 acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 218 { 219 static const int handler = OSL_NOTIFY_HANDLER; 220 device_t dv = context; 221 222 switch (notify) { 223 /* 224 * XXX So, BusCheck is not exactly what I would expect, 225 * but at least my IBM T21 sends it on AC adapter status 226 * change. --thorpej (at) wasabisystems.com 227 */ 228 /* 229 * XXX My Acer TravelMate 291 sends DeviceCheck on AC 230 * adapter status change. 231 * --rpaulo (at) NetBSD.org 232 */ 233 /* 234 * XXX Sony VAIO VGN-N250E sends 0x81 on AC adapter status change. 235 * --jmcneill (at) NetBSD.org 236 */ 237 case ACPI_NOTIFY_ACAD: 238 case ACPI_NOTIFY_ACAD_2: 239 case ACPI_NOTIFY_BUS_CHECK: 240 case ACPI_NOTIFY_DEVICE_CHECK: 241 (void)AcpiOsExecute(handler, acpiacad_get_status, dv); 242 break; 243 244 case ACPI_NOTIFY_DEVICE_WAKE: 245 break; 246 247 default: 248 aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify); 249 } 250 } 251 252 static void 253 acpiacad_init_envsys(device_t dv) 254 { 255 struct acpiacad_softc *sc = device_private(dv); 256 257 sc->sc_sme = sysmon_envsys_create(); 258 259 sc->sc_sensor.state = ENVSYS_SINVALID; 260 sc->sc_sensor.units = ENVSYS_INDICATOR; 261 262 (void)strlcpy(sc->sc_sensor.desc, "connected", ENVSYS_DESCLEN); 263 264 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) 265 goto fail; 266 267 sc->sc_sme->sme_name = device_xname(dv); 268 sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; 269 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; 270 271 if (sysmon_envsys_register(sc->sc_sme) != 0) 272 goto fail; 273 274 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); 275 276 return; 277 278 fail: 279 aprint_error_dev(dv, "failed to initialize sysmon\n"); 280 281 sysmon_envsys_destroy(sc->sc_sme); 282 sc->sc_sme = NULL; 283 } 284 285 MODULE(MODULE_CLASS_DRIVER, acpiacad, "sysmon_envsys,sysmon_power"); 286 287 #ifdef _MODULE 288 #include "ioconf.c" 289 #endif 290 291 static int 292 acpiacad_modcmd(modcmd_t cmd, void *aux) 293 { 294 int rv = 0; 295 296 switch (cmd) { 297 298 case MODULE_CMD_INIT: 299 300 #ifdef _MODULE 301 rv = config_init_component(cfdriver_ioconf_acpiacad, 302 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); 303 #endif 304 break; 305 306 case MODULE_CMD_FINI: 307 308 #ifdef _MODULE 309 rv = config_fini_component(cfdriver_ioconf_acpiacad, 310 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); 311 #endif 312 break; 313 314 default: 315 rv = ENOTTY; 316 } 317 318 return rv; 319 } 320
Indexes created Sat Sep 20 22:09:52 GMT 2025