acpi_wakedev.c revision 1.3
1 /* $NetBSD: acpi_wakedev.c,v 1.3 2010/03/05 14:00:17 jruoho 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 1.3 2010/03/05 14:00:17 jruoho Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/kmem.h> 35 #include <sys/queue.h> 36 #include <sys/sysctl.h> 37 #include <sys/systm.h> 38 39 #include <dev/acpi/acpireg.h> 40 #include <dev/acpi/acpivar.h> 41 #include <dev/acpi/acpi_wakedev.h> 42 43 struct acpi_wakedev; 44 45 static TAILQ_HEAD(, acpi_wakedev) acpi_wakedevlist = 46 TAILQ_HEAD_INITIALIZER(acpi_wakedevlist); 47 static int acpi_wakedev_node = -1; 48 49 struct acpi_wakedev { 50 struct acpi_devnode *aw_node; 51 int aw_enabled; 52 struct sysctllog *aw_sysctllog; 53 TAILQ_ENTRY(acpi_wakedev) aw_list; 54 }; 55 56 static const char * const acpi_wakedev_default[] = { 57 "PNP0C0C", /* power button */ 58 "PNP0C0E", /* sleep button */ 59 "PNP0C0D", /* lid switch */ 60 "PNP03??", /* PC KBD port */ 61 NULL, 62 }; 63 64 SYSCTL_SETUP(sysctl_acpi_wakedev_setup, "sysctl hw.wake subtree setup") 65 { 66 const struct sysctlnode *rnode; 67 int err; 68 69 err = sysctl_createv(NULL, 0, NULL, NULL, 70 CTLFLAG_PERMANENT, 71 CTLTYPE_NODE, "hw", NULL, 72 NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 73 if (err) 74 return; 75 err = sysctl_createv(NULL, 0, NULL, &rnode, 76 CTLFLAG_PERMANENT, 77 CTLTYPE_NODE, "wake", NULL, 78 NULL, 0, NULL, 0, 79 CTL_HW, CTL_CREATE, CTL_EOL); 80 if (err) 81 return; 82 acpi_wakedev_node = rnode->sysctl_num; 83 } 84 85 static void 86 acpi_wakedev_sysctl_add(struct acpi_wakedev *aw) 87 { 88 int err; 89 90 if (acpi_wakedev_node == -1) 91 return; 92 93 err = sysctl_createv(&aw->aw_sysctllog, 0, NULL, NULL, 94 CTLFLAG_READWRITE, CTLTYPE_INT, aw->aw_node->ad_name, 95 NULL, NULL, 0, &aw->aw_enabled, 0, 96 CTL_HW, acpi_wakedev_node, CTL_CREATE, CTL_EOL); 97 if (err) 98 printf("acpi_wakedev_sysctl_add: " 99 "sysctl_createv(hw.wake.%s) failed. (%d)\n", 100 aw->aw_node->ad_name, err); 101 } 102 103 static bool 104 acpi_wakedev_add(struct acpi_softc *sc, struct acpi_devnode *ad) 105 { 106 struct acpi_wakedev *aw; 107 ACPI_HANDLE hdl; 108 109 if (ACPI_FAILURE(AcpiGetHandle(ad->ad_handle, "_PRW", &hdl))) 110 return false; 111 112 aw = kmem_alloc(sizeof(*aw), KM_SLEEP); 113 if (aw == NULL) { 114 aprint_error("acpi_wakedev_add: kmem_alloc failed\n"); 115 return false; 116 } 117 aw->aw_node = ad; 118 aw->aw_sysctllog = NULL; 119 if (acpi_match_hid(ad->ad_devinfo, acpi_wakedev_default)) 120 aw->aw_enabled = 1; 121 else 122 aw->aw_enabled = 0; 123 124 TAILQ_INSERT_TAIL(&acpi_wakedevlist, aw, aw_list); 125 126 acpi_wakedev_sysctl_add(aw); 127 128 return true; 129 } 130 131 static void 132 acpi_wakedev_print(struct acpi_wakedev *aw) 133 { 134 aprint_debug(" %s", aw->aw_node->ad_name); 135 } 136 137 int 138 acpi_wakedev_scan(struct acpi_softc *sc) 139 { 140 struct acpi_scope *as; 141 struct acpi_devnode *ad; 142 struct acpi_wakedev *aw; 143 ACPI_DEVICE_INFO *di; 144 int count = 0; 145 146 #define ACPI_STA_DEV_VALID \ 147 (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED|ACPI_STA_DEV_OK) 148 149 TAILQ_FOREACH(as, &sc->sc_scopes, as_list) 150 TAILQ_FOREACH(ad, &as->as_devnodes, ad_list) { 151 di = ad->ad_devinfo; 152 if (di->Type != ACPI_TYPE_DEVICE) 153 continue; 154 if ((di->Valid & ACPI_VALID_STA) != 0 && 155 (di->CurrentStatus & ACPI_STA_DEV_VALID) != 156 ACPI_STA_DEV_VALID) 157 continue; 158 if (acpi_wakedev_add(sc, ad) == true) 159 ++count; 160 } 161 162 #undef ACPI_STA_DEV_VALID 163 164 if (count == 0) 165 return 0; 166 167 aprint_debug_dev(sc->sc_dev, "wakeup devices:"); 168 TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) 169 acpi_wakedev_print(aw); 170 aprint_debug("\n"); 171 172 return count; 173 } 174 175 void 176 acpi_wakedev_commit(struct acpi_softc *sc) 177 { 178 struct acpi_wakedev *aw; 179 180 TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) { 181 if (aw->aw_enabled) { 182 aprint_debug_dev(sc->sc_dev, "set wake GPE (%s)\n", 183 aw->aw_node->ad_name); 184 acpi_set_wake_gpe(aw->aw_node->ad_handle); 185 } else 186 acpi_clear_wake_gpe(aw->aw_node->ad_handle); 187 } 188 } 189
Indexes created Thu Sep 25 16:09:42 GMT 2025