1 /*- 2 * Copyright (c) 2000 Takanori Watanabe 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/acpica/acpi_acad.c,v 1.17.2.1 2003/08/22 20:49:20 jhb Exp $ 27 * $DragonFly: src/sys/dev/acpica/Attic/acpi_acad.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ 28 */ 29 30 #include "opt_acpi.h" 31 #include <sys/param.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 35 #include <machine/bus.h> 36 #include <machine/resource.h> 37 #include <sys/rman.h> 38 #include <sys/ioccom.h> 39 #include <sys/malloc.h> 40 #include <sys/conf.h> 41 #include <sys/power.h> 42 43 #include "acpi.h" 44 #include <dev/acpica/acpivar.h> 45 #include <dev/acpica/acpiio.h> 46 47 /* 48 * Hooks for the ACPI CA debugging infrastructure 49 */ 50 #define _COMPONENT ACPI_AC_ADAPTER 51 ACPI_MODULE_NAME("AC_ADAPTER") 52 53 #define ACPI_DEVICE_CHECK_PNP 0x00 54 #define ACPI_DEVICE_CHECK_EXISTENCE 0x01 55 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80 56 57 static void acpi_acad_get_status(void * ); 58 static void acpi_acad_notify_handler(ACPI_HANDLE , UINT32 ,void *); 59 static int acpi_acad_probe(device_t); 60 static int acpi_acad_attach(device_t); 61 static int acpi_acad_ioctl(u_long, caddr_t, void *); 62 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS); 63 static void acpi_acad_init_acline(void *arg); 64 65 struct acpi_acad_softc { 66 int status; 67 68 int initializing; 69 }; 70 71 static void 72 acpi_acad_get_status(void *context) 73 { 74 int newstatus; 75 device_t dev = context; 76 struct acpi_acad_softc *sc = device_get_softc(dev); 77 ACPI_HANDLE h = acpi_get_handle(dev); 78 79 if (ACPI_FAILURE(acpi_EvaluateInteger(h, "_PSR", &newstatus))) { 80 sc->status = -1; 81 return; 82 } 83 84 if (sc->status != newstatus) { 85 sc->status = newstatus; 86 /* set system power profile based on AC adapter status */ 87 power_profile_set_state(sc->status ? POWER_PROFILE_PERFORMANCE : POWER_PROFILE_ECONOMY); 88 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 89 "%s Line\n",(sc->status) ? "On" : "Off"); 90 } 91 } 92 93 static void 94 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 95 { 96 device_t dev = context; 97 98 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 99 "Notify %d\n", notify); 100 101 switch (notify) { 102 case ACPI_DEVICE_CHECK_PNP: 103 case ACPI_DEVICE_CHECK_EXISTENCE: 104 case ACPI_POWERSOURCE_STAT_CHANGE: 105 /*Temporally. It is better to notify policy manager*/ 106 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 107 acpi_acad_get_status,context); 108 break; 109 default: 110 break; 111 } 112 } 113 114 static int 115 acpi_acad_probe(device_t dev) 116 { 117 118 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) && 119 acpi_MatchHid(dev, "ACPI0003")) { 120 121 /* 122 * Set device description 123 */ 124 device_set_desc(dev, "AC adapter"); 125 return(0); 126 } 127 return(ENXIO); 128 } 129 130 static int 131 acpi_acad_attach(device_t dev) 132 { 133 int error; 134 struct acpi_acad_softc *sc; 135 struct acpi_softc *acpi_sc; 136 137 ACPI_HANDLE handle = acpi_get_handle(dev); 138 AcpiInstallNotifyHandler(handle, 139 ACPI_DEVICE_NOTIFY, 140 acpi_acad_notify_handler, dev); 141 /*Installing system notify is not so good*/ 142 AcpiInstallNotifyHandler(handle, 143 ACPI_SYSTEM_NOTIFY, 144 acpi_acad_notify_handler, dev); 145 146 if ((sc = device_get_softc(dev)) == NULL) { 147 return (ENXIO); 148 } 149 if ((error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, 150 acpi_acad_ioctl, dev)) != 0) { 151 return (error); 152 } 153 154 if (device_get_unit(dev) == 0) { 155 acpi_sc = acpi_device_get_parent_softc(dev); 156 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 157 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 158 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 159 &sc->status, 0, acpi_acad_sysctl, "I", ""); 160 } 161 162 /* Get initial status after whole system is up. */ 163 sc->status = -1; 164 sc->initializing = 0; 165 166 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_init_acline, dev); 167 168 return(0); 169 } 170 171 static device_method_t acpi_acad_methods[] = { 172 /* Device interface */ 173 DEVMETHOD(device_probe, acpi_acad_probe), 174 DEVMETHOD(device_attach, acpi_acad_attach), 175 176 {0, 0} 177 }; 178 179 static driver_t acpi_acad_driver = { 180 "acpi_acad", 181 acpi_acad_methods, 182 sizeof(struct acpi_acad_softc), 183 }; 184 185 static devclass_t acpi_acad_devclass; 186 DRIVER_MODULE(acpi_acad,acpi,acpi_acad_driver,acpi_acad_devclass,0,0); 187 188 static int 189 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 190 { 191 device_t dev; 192 struct acpi_acad_softc *sc; 193 194 dev = (device_t)arg; 195 if ((sc = device_get_softc(dev)) == NULL) { 196 return(ENXIO); 197 } 198 199 /* 200 * No security check required: information retrieval only. If 201 * new functions are added here, a check might be required. 202 */ 203 204 switch (cmd) { 205 case ACPIIO_ACAD_GET_STATUS: 206 acpi_acad_get_status(dev); 207 *(int *)addr = sc->status; 208 break; 209 } 210 211 return(0); 212 } 213 214 static int 215 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 216 { 217 int val; 218 int error; 219 220 if (acpi_acad_get_acline(&val)) { 221 return (ENXIO); 222 } 223 224 val = *(u_int *)oidp->oid_arg1; 225 error = sysctl_handle_int(oidp, &val, 0, req); 226 return (error); 227 } 228 229 static void 230 acpi_acad_init_acline(void *arg) 231 { 232 int retry; 233 int status; 234 device_t dev = (device_t)arg; 235 struct acpi_acad_softc *sc = device_get_softc(dev); 236 #define ACPI_ACAD_RETRY_MAX 6 237 238 if (sc->initializing) { 239 return; 240 } 241 242 sc->initializing = 1; 243 244 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 245 "acline initialization start\n"); 246 247 status = 0; 248 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++, AcpiOsSleep(10, 0)) { 249 acpi_acad_get_status(dev); 250 if (status != sc->status) 251 break; 252 } 253 254 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 255 "acline initialization done, tried %d times\n", retry+1); 256 257 sc->initializing = 0; 258 } 259 260 /* 261 * Public interfaces. 262 */ 263 264 int 265 acpi_acad_get_acline(int *status) 266 { 267 device_t dev; 268 struct acpi_acad_softc *sc; 269 270 if ((dev = devclass_get_device(acpi_acad_devclass, 0)) == NULL) { 271 return (ENXIO); 272 } 273 274 if ((sc = device_get_softc(dev)) == NULL) { 275 return (ENXIO); 276 } 277 278 acpi_acad_get_status(dev); 279 *status = sc->status; 280 281 return (0); 282 } 283 284