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 70 static device_method_t acpi_acad_methods[] = { 71 /* Device interface */ 72 DEVMETHOD(device_probe, acpi_acad_probe), 73 DEVMETHOD(device_attach, acpi_acad_attach), 74 75 {0, 0} 76 }; 77 78 static driver_t acpi_acad_driver = { 79 "acpi_acad", 80 acpi_acad_methods, 81 sizeof(struct acpi_acad_softc), 82 }; 83 84 static devclass_t acpi_acad_devclass; 85 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0); 86 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1); 87 88 ACPI_SERIAL_DECL(acad, "ACPI AC adapter"); 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 newstatus = -1; 102 acpi_GetInteger(h, "_PSR", &newstatus); 103 104 /* If status is valid and has changed, notify the system. */ 105 ACPI_SERIAL_BEGIN(acad); 106 if (newstatus != -1 && sc->status != newstatus) { 107 sc->status = newstatus; 108 power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE : 109 POWER_PROFILE_ECONOMY); 110 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 111 "%s Line\n", newstatus ? "On" : "Off"); 112 acpi_UserNotify("ACAD", h, newstatus); 113 } 114 ACPI_SERIAL_END(acad); 115 } 116 117 static void 118 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 119 { 120 device_t dev; 121 122 dev = (device_t)context; 123 switch (notify) { 124 case ACPI_NOTIFY_BUS_CHECK: 125 case ACPI_NOTIFY_DEVICE_CHECK: 126 case ACPI_POWERSOURCE_STAT_CHANGE: 127 /* Temporarily. It is better to notify policy manager */ 128 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_get_status, context); 129 break; 130 default: 131 device_printf(dev, "unknown notify %#x\n", notify); 132 break; 133 } 134 } 135 136 static int 137 acpi_acad_probe(device_t dev) 138 { 139 static char *acad_ids[] = { "ACPI0003", NULL }; 140 141 if (acpi_disabled("acad") || 142 ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids) == NULL) 143 return (ENXIO); 144 145 device_set_desc(dev, "AC Adapter"); 146 return (0); 147 } 148 149 static int 150 acpi_acad_attach(device_t dev) 151 { 152 struct acpi_acad_softc *sc; 153 struct acpi_softc *acpi_sc; 154 ACPI_HANDLE handle; 155 int error; 156 157 sc = device_get_softc(dev); 158 handle = acpi_get_handle(dev); 159 160 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev); 161 if (error != 0) 162 return (error); 163 164 if (device_get_unit(dev) == 0) { 165 acpi_sc = acpi_device_get_parent_softc(dev); 166 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 167 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 168 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 169 &sc->status, 0, acpi_acad_sysctl, "I", ""); 170 } 171 172 /* Get initial status after whole system is up. */ 173 sc->status = -1; 174 175 /* 176 * Install both system and device notify handlers since the Casio 177 * FIVA needs them. 178 */ 179 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY, 180 acpi_acad_notify_handler, dev); 181 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_init_acline, dev); 182 183 return (0); 184 } 185 186 static int 187 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 188 { 189 struct acpi_acad_softc *sc; 190 device_t dev; 191 192 dev = (device_t)arg; 193 sc = device_get_softc(dev); 194 195 /* 196 * No security check required: information retrieval only. If 197 * new functions are added here, a check might be required. 198 */ 199 switch (cmd) { 200 case ACPIIO_ACAD_GET_STATUS: 201 acpi_acad_get_status(dev); 202 *(int *)addr = sc->status; 203 break; 204 default: 205 break; 206 } 207 208 return (0); 209 } 210 211 static int 212 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 213 { 214 int val, error; 215 216 if (acpi_acad_get_acline(&val) != 0) 217 return (ENXIO); 218 219 val = *(u_int *)oidp->oid_arg1; 220 error = sysctl_handle_int(oidp, &val, 0, req); 221 return (error); 222 } 223 224 static void 225 acpi_acad_init_acline(void *arg) 226 { 227 struct acpi_acad_softc *sc; 228 device_t dev; 229 int retry; 230 231 dev = (device_t)arg; 232 sc = device_get_softc(dev); 233 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 234 "acline initialization start\n"); 235 236 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) { 237 acpi_acad_get_status(dev); 238 if (sc->status != -1) 239 break; 240 AcpiOsSleep(10000); 241 } 242 243 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), 244 "acline initialization done, tried %d times\n", retry + 1); 245 } 246 247 /* 248 * Public interfaces. 249 */ 250 int 251 acpi_acad_get_acline(int *status) 252 { 253 struct acpi_acad_softc *sc; 254 device_t dev; 255 256 dev = devclass_get_device(acpi_acad_devclass, 0); 257 if (dev == NULL) 258 return (ENXIO); 259 sc = device_get_softc(dev); 260 261 acpi_acad_get_status(dev); 262 *status = sc->status; 263 264 return (0); 265 } 266