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 27 #include <sys/cdefs.h> 28 #include "opt_acpi.h" 29 #include <sys/param.h> 30 #include <sys/kernel.h> 31 #include <sys/bus.h> 32 33 #include <machine/bus.h> 34 #include <sys/rman.h> 35 #include <sys/eventhandler.h> 36 #include <sys/ioccom.h> 37 #include <sys/malloc.h> 38 #include <sys/module.h> 39 #include <sys/conf.h> 40 #include <sys/power.h> 41 42 #include <contrib/dev/acpica/include/acpi.h> 43 44 #include <dev/acpica/acpivar.h> 45 #include <dev/acpica/acpiio.h> 46 #include <isa/isavar.h> 47 #include <isa/pnpvar.h> 48 49 /* Hooks for the ACPI CA debugging infrastructure */ 50 #define _COMPONENT ACPI_AC_ADAPTER 51 ACPI_MODULE_NAME("AC_ADAPTER") 52 53 /* Number of times to retry initialization before giving up. */ 54 #define ACPI_ACAD_RETRY_MAX 6 55 56 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80 57 58 struct acpi_acad_softc { 59 int status; 60 }; 61 62 static void acpi_acad_get_status(void *); 63 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *); 64 static int acpi_acad_probe(device_t); 65 static int acpi_acad_attach(device_t); 66 static int acpi_acad_ioctl(u_long, caddr_t, void *); 67 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS); 68 static void acpi_acad_init_acline(void *arg); 69 static void acpi_acad_ac_only(void *arg); 70 71 static device_method_t acpi_acad_methods[] = { 72 /* Device interface */ 73 DEVMETHOD(device_probe, acpi_acad_probe), 74 DEVMETHOD(device_attach, acpi_acad_attach), 75 76 DEVMETHOD_END 77 }; 78 79 static driver_t acpi_acad_driver = { 80 "acpi_acad", 81 acpi_acad_methods, 82 sizeof(struct acpi_acad_softc), 83 }; 84 85 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, 0, 0); 86 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1); 87 88 ACPI_SERIAL_DECL(acad, "ACPI AC adapter"); 89 90 SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL); 91 92 static void 93 acpi_acad_get_status(void *context) 94 { 95 struct acpi_acad_softc *sc; 96 device_t dev; 97 ACPI_HANDLE h; 98 int newstatus; 99 100 dev = context; 101 sc = device_get_softc(dev); 102 h = acpi_get_handle(dev); 103 newstatus = -1; 104 acpi_GetInteger(h, "_PSR", &newstatus); 105 106 /* If status is valid and has changed, notify the system. */ 107 ACPI_SERIAL_BEGIN(acad); 108 if (newstatus != -1 && sc->status != newstatus) { 109 sc->status = newstatus; 110 ACPI_SERIAL_END(acad); 111 power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE : 112 POWER_PROFILE_ECONOMY); 113 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 114 "%s Line\n", newstatus ? "On" : "Off"); 115 acpi_UserNotify("ACAD", h, newstatus); 116 EVENTHANDLER_INVOKE(acpi_acad_event, newstatus); 117 } else 118 ACPI_SERIAL_END(acad); 119 } 120 121 static void 122 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 123 { 124 device_t dev; 125 126 dev = (device_t)context; 127 switch (notify) { 128 case ACPI_NOTIFY_BUS_CHECK: 129 case ACPI_NOTIFY_DEVICE_CHECK: 130 case ACPI_POWERSOURCE_STAT_CHANGE: 131 /* Temporarily. It is better to notify policy manager */ 132 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context); 133 break; 134 default: 135 device_printf(dev, "unknown notify %#x\n", notify); 136 break; 137 } 138 } 139 140 static int 141 acpi_acad_probe(device_t dev) 142 { 143 static char *acad_ids[] = { "ACPI0003", NULL }; 144 int rv; 145 146 if (acpi_disabled("acad")) 147 return (ENXIO); 148 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids, NULL); 149 if (rv <= 0) 150 device_set_desc(dev, "AC Adapter"); 151 return (rv); 152 } 153 154 static int 155 acpi_acad_attach(device_t dev) 156 { 157 struct acpi_acad_softc *sc; 158 struct acpi_softc *acpi_sc; 159 ACPI_HANDLE handle; 160 int error; 161 162 sc = device_get_softc(dev); 163 handle = acpi_get_handle(dev); 164 165 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev); 166 if (error != 0) 167 return (error); 168 169 if (device_get_unit(dev) == 0) { 170 acpi_sc = acpi_device_get_parent_softc(dev); 171 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 172 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, "acline", 173 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev, 0, 174 acpi_acad_sysctl, "I", ""); 175 } 176 177 /* Get initial status after whole system is up. */ 178 sc->status = -1; 179 180 /* 181 * Install both system and device notify handlers since the Casio 182 * FIVA needs them. 183 */ 184 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY, 185 acpi_acad_notify_handler, dev); 186 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev); 187 188 return (0); 189 } 190 191 static int 192 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 193 { 194 struct acpi_acad_softc *sc; 195 device_t dev; 196 197 dev = (device_t)arg; 198 sc = device_get_softc(dev); 199 200 /* 201 * No security check required: information retrieval only. If 202 * new functions are added here, a check might be required. 203 */ 204 switch (cmd) { 205 case ACPIIO_ACAD_GET_STATUS: 206 acpi_acad_get_status(dev); 207 *(int *)addr = sc->status; 208 break; 209 default: 210 break; 211 } 212 213 return (0); 214 } 215 216 static int 217 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 218 { 219 device_t dev = oidp->oid_arg1; 220 struct acpi_acad_softc *sc = device_get_softc(dev); 221 int val; 222 223 acpi_acad_get_status(dev); 224 val = sc->status; 225 return (sysctl_handle_int(oidp, &val, 0, req)); 226 } 227 228 static void 229 acpi_acad_init_acline(void *arg) 230 { 231 struct acpi_acad_softc *sc; 232 device_t dev; 233 int retry; 234 235 dev = (device_t)arg; 236 sc = device_get_softc(dev); 237 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 238 "acline initialization start\n"); 239 240 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) { 241 acpi_acad_get_status(dev); 242 if (sc->status != -1) 243 break; 244 AcpiOsSleep(10000); 245 } 246 247 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 248 "acline initialization done, tried %d times\n", retry + 1); 249 } 250 251 /* 252 * If no AC line devices detected after boot, create an "online" event 253 * so that userland code can adjust power settings accordingly. The default 254 * power profile is "performance" so we don't need to repeat that here. 255 */ 256 static void 257 acpi_acad_ac_only(void __unused *arg) 258 { 259 260 if (devclass_get_count(devclass_find("acpi_acad")) == 0) 261 acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1); 262 } 263 264 /* 265 * Public interfaces. 266 */ 267 int 268 acpi_acad_get_acline(int *status) 269 { 270 struct acpi_acad_softc *sc; 271 device_t dev; 272 273 dev = devclass_get_device(devclass_find("acpi_acad"), 0); 274 if (dev == NULL) 275 return (ENXIO); 276 sc = device_get_softc(dev); 277 278 acpi_acad_get_status(dev); 279 *status = sc->status; 280 281 return (0); 282 } 283