acpi_acad.c revision 83173
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: head/sys/dev/acpica/acpi_acad.c 83173 2001-09-06 23:33:22Z msmith $ 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 <machine/resource.h> 36#include <sys/rman.h> 37#include <sys/ioccom.h> 38#include <sys/malloc.h> 39#include <sys/conf.h> 40 41#include "acpi.h" 42#include <dev/acpica/acpivar.h> 43#include <dev/acpica/acpiio.h> 44 45/* 46 * Hooks for the ACPI CA debugging infrastructure 47 */ 48#define _COMPONENT ACPI_AC_ADAPTER 49MODULE_NAME("AC_ADAPTER") 50 51#define ACPI_DEVICE_CHECK_PNP 0x00 52#define ACPI_DEVICE_CHECK_EXISTENCE 0x01 53#define ACPI_POWERSOURCE_STAT_CHANGE 0x80 54 55static void acpi_acad_get_status(void * ); 56static void acpi_acad_notify_handler(ACPI_HANDLE , UINT32 ,void *); 57static int acpi_acad_probe(device_t); 58static int acpi_acad_attach(device_t); 59static int acpi_acad_ioctl(u_long, caddr_t, void *); 60static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS); 61 62struct acpi_acad_softc { 63 int status; 64}; 65 66static void 67acpi_acad_get_status(void *context) 68{ 69 int newstatus; 70 device_t dev = context; 71 struct acpi_acad_softc *sc = device_get_softc(dev); 72 ACPI_HANDLE h = acpi_get_handle(dev); 73 74 if (acpi_EvaluateInteger(h, "_PSR", &newstatus) != AE_OK) { 75 sc->status = -1; 76 return; 77 } 78 79 if (sc->status != newstatus) { 80 sc->status = newstatus; 81 /* set system power profile based on AC adapter status */ 82 powerprofile_set_state(sc->status ? POWERPROFILE_PERFORMANCE : POWERPROFILE_ECONOMY); 83 } 84 85 if (bootverbose) { 86 device_printf(dev,"%s\n",(sc->status) ? "On Line" : "Off Line"); 87 } 88} 89 90static void 91acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) 92{ 93 device_t dev = context; 94 95 if (bootverbose) { 96 device_printf(dev, "Notify %d\n", notify); 97 } 98 99 switch (notify) { 100 case ACPI_DEVICE_CHECK_PNP: 101 case ACPI_DEVICE_CHECK_EXISTENCE: 102 case ACPI_POWERSOURCE_STAT_CHANGE: 103 /*Temporally. It is better to notify policy manager*/ 104 AcpiOsQueueForExecution(OSD_PRIORITY_LO, 105 acpi_acad_get_status,context); 106 break; 107 default: 108 break; 109 } 110} 111 112static int 113acpi_acad_probe(device_t dev) 114{ 115 116 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) && 117 acpi_MatchHid(dev, "ACPI0003")) { 118 119 /* 120 * Set device description 121 */ 122 device_set_desc(dev, "AC adapter"); 123 return(0); 124 } 125 return(ENXIO); 126} 127 128static int 129acpi_acad_attach(device_t dev) 130{ 131 int error; 132 struct acpi_acad_softc *sc; 133 struct acpi_softc *acpi_sc; 134 135 ACPI_HANDLE handle = acpi_get_handle(dev); 136 AcpiInstallNotifyHandler(handle, 137 ACPI_DEVICE_NOTIFY, 138 acpi_acad_notify_handler, dev); 139 /*Installing system notify is not so good*/ 140 AcpiInstallNotifyHandler(handle, 141 ACPI_SYSTEM_NOTIFY, 142 acpi_acad_notify_handler, dev); 143 144 if ((sc = device_get_softc(dev)) == NULL) { 145 return (ENXIO); 146 } 147 if ((error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, 148 acpi_acad_ioctl, dev)) != 0) { 149 return (error); 150 } 151 152 if (device_get_unit(dev) == 0) { 153 acpi_sc = acpi_device_get_parent_softc(dev); 154 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx, 155 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 156 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD, 157 &sc->status, 0, acpi_acad_sysctl, "I", ""); 158 } 159 160 /* Get initial status after whole system is up. */ 161 sc->status = -1; 162 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_get_status, dev); 163 164 return(0); 165} 166 167static device_method_t acpi_acad_methods[] = { 168 /* Device interface */ 169 DEVMETHOD(device_probe, acpi_acad_probe), 170 DEVMETHOD(device_attach, acpi_acad_attach), 171 172 {0, 0} 173}; 174 175static driver_t acpi_acad_driver = { 176 "acpi_acad", 177 acpi_acad_methods, 178 sizeof(struct acpi_acad_softc), 179}; 180 181static devclass_t acpi_acad_devclass; 182DRIVER_MODULE(acpi_acad,acpi,acpi_acad_driver,acpi_acad_devclass,0,0); 183 184static int 185acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg) 186{ 187 device_t dev; 188 struct acpi_acad_softc *sc; 189 190 dev = (device_t)arg; 191 if ((sc = device_get_softc(dev)) == NULL) { 192 return(ENXIO); 193 } 194 195 switch (cmd) { 196 case ACPIIO_ACAD_GET_STATUS: 197 acpi_acad_get_status(dev); 198 *(int *)addr = sc->status; 199 break; 200 } 201 202 return(0); 203} 204 205static int 206acpi_acad_sysctl(SYSCTL_HANDLER_ARGS) 207{ 208 int val; 209 int error; 210 device_t dev; 211 struct acpi_acad_softc *sc; 212 213 if ((dev = devclass_get_device(acpi_acad_devclass, 0)) == NULL) { 214 return (ENXIO); 215 } 216 if ((sc = device_get_softc(dev)) == NULL) { 217 return (ENXIO); 218 } 219 acpi_acad_get_status(dev); 220 val = *(u_int *)oidp->oid_arg1; 221 error = sysctl_handle_int(oidp, &val, 0, req); 222 return (error); 223} 224 225