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 * 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 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 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 if (sc == NULL) 200 return (ENXIO); 201 202 /* 203 * No security check required: information retrieval only. If 204 * new functions are added here, a check might be required. 205 */ 206 switch (cmd) { 207 case ACPIIO_ACAD_GET_STATUS: 208 acpi_acad_get_status(dev); 209 *(int *)addr = sc->status; 210 break; 211 default: 212 break; 213 } 214 215 return (0); 216 } 217 218 static int 219 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 220 { 221 int val, error; 222 223 if (acpi_acad_get_acline(&val) != 0) 224 return (ENXIO); 225 226 val = *(u_int *)oidp->oid_arg1; 227 error = sysctl_handle_int(oidp, &val, 0, req); 228 return (error); 229 } 230 231 static void 232 acpi_acad_init_acline(void *arg) 233 { 234 struct acpi_acad_softc *sc; 235 device_t dev; 236 int retry, status; 237 238 dev = (device_t)arg; 239 sc = device_get_softc(dev); 240 if (sc->initializing) 241 return; 242 243 sc->initializing = 1; 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++) { 249 acpi_acad_get_status(dev); 250 if (status != sc->status) 251 break; 252 AcpiOsSleep(10, 0); 253 } 254 255 sc->initializing = 0; 256 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 257 "acline initialization done, tried %d times\n", retry + 1); 258 } 259 260 /* 261 * Public interfaces. 262 */ 263 int 264 acpi_acad_get_acline(int *status) 265 { 266 struct acpi_acad_softc *sc; 267 device_t dev; 268 269 dev = devclass_get_device(acpi_acad_devclass, 0); 270 if (dev == NULL) 271 return (ENXIO); 272 sc = device_get_softc(dev); 273 if (sc == NULL) 274 return (ENXIO); 275 276 acpi_acad_get_status(dev); 277 *status = sc->status; 278 279 return (0); 280 } 281