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 * $FreeBSD$ 27 */ 28 29 #include "opt_acpi.h" 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 34 #include <machine/bus.h> 35 #include <sys/rman.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 "acpi.h" 43 #include <dev/acpica/acpivar.h> 44 #include <dev/acpica/acpiio.h> 45 #include <isa/isavar.h> 46 #include <isa/pnpvar.h> 47 48 /* Hooks for the ACPI CA debugging infrastructure */ 49 #define _COMPONENT ACPI_AC_ADAPTER 50 ACPI_MODULE_NAME("AC_ADAPTER") 51 52 /* Number of times to retry initialization before giving up. */ 53 #define ACPI_ACAD_RETRY_MAX 6 54 55 #define ACPI_DEVICE_CHECK_PNP 0x00 56 #define ACPI_DEVICE_CHECK_EXISTENCE 0x01 57 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80 58 59 struct acpi_acad_softc { 60 int status; 61 int initializing; 62 }; 63 64 static void acpi_acad_get_status(void *); 65 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *); 66 static int acpi_acad_probe(device_t); 67 static int acpi_acad_attach(device_t); 68 static int acpi_acad_ioctl(u_long, caddr_t, void *); 69 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS); 70 static void acpi_acad_init_acline(void *arg); 71 72 static device_method_t acpi_acad_methods[] = { 73 /* Device interface */ 74 DEVMETHOD(device_probe, acpi_acad_probe), 75 DEVMETHOD(device_attach, acpi_acad_attach), 76 77 {0, 0} 78 }; 79 80 static driver_t acpi_acad_driver = { 81 "acpi_acad", 82 acpi_acad_methods, 83 sizeof(struct acpi_acad_softc), 84 }; 85 86 static devclass_t acpi_acad_devclass; 87 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0); 88 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1); 89 90 static void 91 acpi_acad_get_status(void *context) 92 { 93 struct acpi_acad_softc *sc; 94 device_t dev; 95 ACPI_HANDLE h; 96 int newstatus; 97 98 dev = context; 99 sc = device_get_softc(dev); 100 h = acpi_get_handle(dev); 101 if (ACPI_FAILURE(acpi_GetInteger(h, "_PSR", &newstatus))) { 102 sc->status = -1; 103 return; 104 } 105 106 if (sc->status != newstatus) { 107 sc->status = newstatus; 108 109 /* Set system power profile based on AC adapter status */ 110 power_profile_set_state(sc->status ? POWER_PROFILE_PERFORMANCE : 111 POWER_PROFILE_ECONOMY); 112 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 113 "%s Line\n", sc->status ? "On" : "Off"); 114 115 acpi_UserNotify("ACAD", h, sc->status); 116 } 117 } 118 119 static void 120 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 121 { 122 device_t dev; 123 124 dev = (device_t)context; 125 switch (notify) { 126 case ACPI_DEVICE_CHECK_PNP: 127 case ACPI_DEVICE_CHECK_EXISTENCE: 128 case ACPI_POWERSOURCE_STAT_CHANGE: 129 /* Temporarily. It is better to notify policy manager */ 130 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_get_status, context); 131 break; 132 default: 133 device_printf(dev, "unknown notify %#x\n", notify); 134 break; 135 } 136 } 137 138 static int 139 acpi_acad_probe(device_t dev) 140 { 141 static char *acad_ids[] = { "ACPI0003", NULL }; 142 143 if (acpi_disabled("acad") || 144 ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids) == NULL) 145 return (ENXIO); 146 147 device_set_desc(dev, "AC Adapter"); 148 return (0); 149 } 150 151 static int 152 acpi_acad_attach(device_t dev) 153 { 154 struct acpi_acad_softc *sc; 155 struct acpi_softc *acpi_sc; 156 ACPI_HANDLE handle; 157 int error; 158 159 sc = device_get_softc(dev); 160 if (sc == NULL) 161 return (ENXIO); 162 handle = acpi_get_handle(dev); 163 164 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev); 165 if (error != 0) 166 return (error); 167 168 if (device_get_unit(dev) == 0) { 169 acpi_sc = acpi_device_get_parent_softc(dev); 170 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 171 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 172 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 173 &sc->status, 0, acpi_acad_sysctl, "I", ""); 174 } 175 176 /* Get initial status after whole system is up. */ 177 sc->status = -1; 178 sc->initializing = 0; 179 180 /* 181 * Also install a system notify handler even though this is not 182 * required by the specification. The Casio FIVA needs this. 183 */ 184 AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY, 185 acpi_acad_notify_handler, dev); 186 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 187 acpi_acad_notify_handler, dev); 188 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_init_acline, dev); 189 190 return (0); 191 } 192 193 static int 194 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 195 { 196 struct acpi_acad_softc *sc; 197 device_t dev; 198 199 dev = (device_t)arg; 200 sc = device_get_softc(dev); 201 if (sc == NULL) 202 return (ENXIO); 203 204 /* 205 * No security check required: information retrieval only. If 206 * new functions are added here, a check might be required. 207 */ 208 switch (cmd) { 209 case ACPIIO_ACAD_GET_STATUS: 210 acpi_acad_get_status(dev); 211 *(int *)addr = sc->status; 212 break; 213 default: 214 break; 215 } 216 217 return (0); 218 } 219 220 static int 221 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 222 { 223 int val, error; 224 225 if (acpi_acad_get_acline(&val) != 0) 226 return (ENXIO); 227 228 val = *(u_int *)oidp->oid_arg1; 229 error = sysctl_handle_int(oidp, &val, 0, req); 230 return (error); 231 } 232 233 static void 234 acpi_acad_init_acline(void *arg) 235 { 236 struct acpi_acad_softc *sc; 237 device_t dev; 238 int retry, status; 239 240 dev = (device_t)arg; 241 sc = device_get_softc(dev); 242 if (sc->initializing) 243 return; 244 245 sc->initializing = 1; 246 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 247 "acline initialization start\n"); 248 249 status = 0; 250 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) { 251 acpi_acad_get_status(dev); 252 if (status != sc->status) 253 break; 254 AcpiOsSleep(10, 0); 255 } 256 257 sc->initializing = 0; 258 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 259 "acline initialization done, tried %d times\n", retry + 1); 260 } 261 262 /* 263 * Public interfaces. 264 */ 265 int 266 acpi_acad_get_acline(int *status) 267 { 268 struct acpi_acad_softc *sc; 269 device_t dev; 270 271 dev = devclass_get_device(acpi_acad_devclass, 0); 272 if (dev == NULL) 273 return (ENXIO); 274 sc = device_get_softc(dev); 275 if (sc == NULL) 276 return (ENXIO); 277 278 acpi_acad_get_status(dev); 279 *status = sc->status; 280 281 return (0); 282 } 283