acpi_wakedev.c revision 1.1
1 /* $NetBSD: acpi_wakedev.c,v 1.1 2009/08/04 14:20:40 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: acpi_wakedev.c,v 1.1 2009/08/04 14:20:40 jmcneill Exp $"); 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/kmem.h> 36 #include <sys/device.h> 37 #include <sys/queue.h> 38 #include <sys/sysctl.h> 39 40 #include <dev/acpi/acpivar.h> 41 #include <dev/acpi/acpireg.h> 42 #include <dev/acpi/acpi_wakedev.h> 43 44 struct acpi_wakedev; 45 46 static TAILQ_HEAD(, acpi_wakedev) acpi_wakedevlist = 47 TAILQ_HEAD_INITIALIZER(acpi_wakedevlist);; 48 static int acpi_wakedev_node = -1; 49 50 struct acpi_wakedev { 51 struct acpi_devnode *aw_node; 52 int aw_enabled; 53 struct sysctllog *aw_sysctllog; 54 TAILQ_ENTRY(acpi_wakedev) aw_list; 55 }; 56 57 static const char * const acpi_wakedev_default[] = { 58 "PNP0C0C", /* power button */ 59 "PNP0C0E", /* sleep button */ 60 "PNP0C0D", /* lid switch */ 61 "PNP03??", /* PC KBD port */ 62 NULL, 63 }; 64 65 SYSCTL_SETUP(sysctl_acpi_wakedev_setup, "sysctl hw.wake subtree setup") 66 { 67 const struct sysctlnode *rnode; 68 int err; 69 70 err = sysctl_createv(NULL, 0, NULL, NULL, 71 CTLFLAG_PERMANENT, 72 CTLTYPE_NODE, "hw", NULL, 73 NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 74 if (err) 75 return; 76 err = sysctl_createv(NULL, 0, NULL, &rnode, 77 CTLFLAG_PERMANENT, 78 CTLTYPE_NODE, "wake", NULL, 79 NULL, 0, NULL, 0, 80 CTL_HW, CTL_CREATE, CTL_EOL); 81 if (err) 82 return; 83 acpi_wakedev_node = rnode->sysctl_num; 84 } 85 86 static void 87 acpi_wakedev_sysctl_add(struct acpi_wakedev *aw) 88 { 89 int err; 90 91 if (acpi_wakedev_node == -1) 92 return; 93 94 err = sysctl_createv(&aw->aw_sysctllog, 0, NULL, NULL, 95 CTLFLAG_READWRITE, CTLTYPE_INT, aw->aw_node->ad_name, 96 NULL, NULL, 0, &aw->aw_enabled, 0, 97 CTL_HW, acpi_wakedev_node, CTL_CREATE, CTL_EOL); 98 if (err) 99 printf("acpi_wakedev_sysctl_add: " 100 "sysctl_createv(hw.wake.%s) failed. (%d)\n", 101 aw->aw_node->ad_name, err); 102 } 103 104 static bool 105 acpi_wakedev_add(struct acpi_softc *sc, struct acpi_devnode *ad) 106 { 107 struct acpi_wakedev *aw; 108 ACPI_HANDLE hdl; 109 110 if (ACPI_FAILURE(AcpiGetHandle(ad->ad_handle, "_PRW", &hdl))) 111 return false; 112 113 aw = kmem_alloc(sizeof(*aw), KM_SLEEP); 114 if (aw == NULL) { 115 aprint_error("acpi_wakedev_add: kmem_alloc failed\n"); 116 return false; 117 } 118 aw->aw_node = ad; 119 aw->aw_sysctllog = NULL; 120 if (acpi_match_hid(ad->ad_devinfo, acpi_wakedev_default)) 121 aw->aw_enabled = 1; 122 else 123 aw->aw_enabled = 0; 124 125 TAILQ_INSERT_TAIL(&acpi_wakedevlist, aw, aw_list); 126 127 acpi_wakedev_sysctl_add(aw); 128 129 return true; 130 } 131 132 static void 133 acpi_wakedev_print(struct acpi_wakedev *aw) 134 { 135 aprint_debug(" %s", aw->aw_node->ad_name); 136 } 137 138 int 139 acpi_wakedev_scan(struct acpi_softc *sc) 140 { 141 struct acpi_scope *as; 142 struct acpi_devnode *ad; 143 struct acpi_wakedev *aw; 144 ACPI_DEVICE_INFO *di; 145 int count = 0; 146 147 #define ACPI_STA_DEV_VALID \ 148 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED|ACPI_STA_DEV_OK) 149 150 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) 151 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 152 di = ad->ad_devinfo; 153 if (di->Type != ACPI_TYPE_DEVICE) 154 continue; 155 if ((di->Valid & ACPI_VALID_STA) != 0 && 156 (di->CurrentStatus & ACPI_STA_DEV_VALID) != 157 ACPI_STA_DEV_VALID) 158 continue; 159 if (acpi_wakedev_add(sc, ad) == true) 160 ++count; 161 } 162 163 #undef ACPI_STA_DEV_VALID 164 165 if (count == 0) 166 return 0; 167 168 aprint_debug_dev(sc->sc_dev, "wakeup devices:"); 169 TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) 170 acpi_wakedev_print(aw); 171 aprint_debug("\n"); 172 173 return count; 174 } 175 176 void 177 acpi_wakedev_commit(struct acpi_softc *sc) 178 { 179 struct acpi_wakedev *aw; 180 181 TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) { 182 if (aw->aw_enabled) { 183 aprint_debug_dev(sc->sc_dev, "set wake GPE (%s)\n", 184 aw->aw_node->ad_name); 185 acpi_set_wake_gpe(aw->aw_node->ad_handle); 186 } else 187 acpi_clear_wake_gpe(aw->aw_node->ad_handle); 188 } 189 } 190
Indexes created Mon Sep 22 10:09:38 GMT 2025