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 __FBSDID("$FreeBSD$"); 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 <sys/rman.h> 37 #include <sys/ioccom.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 #include <sys/conf.h> 41 #include <sys/power.h> 42 43 #include <contrib/dev/acpica/acpi.h> 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 {0, 0} 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 static devclass_t acpi_acad_devclass; 86 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0); 87 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1); 88 89 ACPI_SERIAL_DECL(acad, "ACPI AC adapter"); 90 91 SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL); 92 93 static void 94 acpi_acad_get_status(void *context) 95 { 96 struct acpi_acad_softc *sc; 97 device_t dev; 98 ACPI_HANDLE h; 99 int newstatus; 100 101 dev = context; 102 sc = device_get_softc(dev); 103 h = acpi_get_handle(dev); 104 newstatus = -1; 105 acpi_GetInteger(h, "_PSR", &newstatus); 106 107 /* If status is valid and has changed, notify the system. */ 108 ACPI_SERIAL_BEGIN(acad); 109 if (newstatus != -1 && sc->status != newstatus) { 110 sc->status = newstatus; 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 } 117 ACPI_SERIAL_END(acad); 118 } 119 120 static void 121 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 122 { 123 device_t dev; 124 125 dev = (device_t)context; 126 switch (notify) { 127 case ACPI_NOTIFY_BUS_CHECK: 128 case ACPI_NOTIFY_DEVICE_CHECK: 129 case ACPI_POWERSOURCE_STAT_CHANGE: 130 /* Temporarily. It is better to notify policy manager */ 131 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context); 132 break; 133 default: 134 device_printf(dev, "unknown notify %#x\n", notify); 135 break; 136 } 137 } 138 139 static int 140 acpi_acad_probe(device_t dev) 141 { 142 static char *acad_ids[] = { "ACPI0003", NULL }; 143 144 if (acpi_disabled("acad") || 145 ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids) == NULL) 146 return (ENXIO); 147 148 device_set_desc(dev, "AC Adapter"); 149 return (0); 150 } 151 152 static int 153 acpi_acad_attach(device_t dev) 154 { 155 struct acpi_acad_softc *sc; 156 struct acpi_softc *acpi_sc; 157 ACPI_HANDLE handle; 158 int error; 159 160 sc = device_get_softc(dev); 161 handle = acpi_get_handle(dev); 162 163 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev); 164 if (error != 0) 165 return (error); 166 167 if (device_get_unit(dev) == 0) { 168 acpi_sc = acpi_device_get_parent_softc(dev); 169 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 170 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 171 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 172 &sc->status, 0, acpi_acad_sysctl, "I", ""); 173 } 174 175 /* Get initial status after whole system is up. */ 176 sc->status = -1; 177 178 /* 179 * Install both system and device notify handlers since the Casio 180 * FIVA needs them. 181 */ 182 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY, 183 acpi_acad_notify_handler, dev); 184 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev); 185 186 return (0); 187 } 188 189 static int 190 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 191 { 192 struct acpi_acad_softc *sc; 193 device_t dev; 194 195 dev = (device_t)arg; 196 sc = device_get_softc(dev); 197 198 /* 199 * No security check required: information retrieval only. If 200 * new functions are added here, a check might be required. 201 */ 202 switch (cmd) { 203 case ACPIIO_ACAD_GET_STATUS: 204 acpi_acad_get_status(dev); 205 *(int *)addr = sc->status; 206 break; 207 default: 208 break; 209 } 210 211 return (0); 212 } 213 214 static int 215 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 216 { 217 int val, error; 218 219 if (acpi_acad_get_acline(&val) != 0) 220 return (ENXIO); 221 222 val = *(u_int *)oidp->oid_arg1; 223 error = sysctl_handle_int(oidp, &val, 0, req); 224 return (error); 225 } 226 227 static void 228 acpi_acad_init_acline(void *arg) 229 { 230 struct acpi_acad_softc *sc; 231 device_t dev; 232 int retry; 233 234 dev = (device_t)arg; 235 sc = device_get_softc(dev); 236 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 237 "acline initialization start\n"); 238 239 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) { 240 acpi_acad_get_status(dev); 241 if (sc->status != -1) 242 break; 243 AcpiOsSleep(10000); 244 } 245 246 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 247 "acline initialization done, tried %d times\n", retry + 1); 248 } 249 250 /* 251 * If no AC line devices detected after boot, create an "online" event 252 * so that userland code can adjust power settings accordingly. The default 253 * power profile is "performance" so we don't need to repeat that here. 254 */ 255 static void 256 acpi_acad_ac_only(void __unused *arg) 257 { 258 259 if (devclass_get_count(acpi_acad_devclass) == 0) 260 acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1); 261 } 262 263 /* 264 * Public interfaces. 265 */ 266 int 267 acpi_acad_get_acline(int *status) 268 { 269 struct acpi_acad_softc *sc; 270 device_t dev; 271 272 dev = devclass_get_device(acpi_acad_devclass, 0); 273 if (dev == NULL) 274 return (ENXIO); 275 sc = device_get_softc(dev); 276 277 acpi_acad_get_status(dev); 278 *status = sc->status; 279 280 return (0); 281 } 282