acpi_wakedev.c revision 1.2.2.3
1 1.2.2.3 yamt /* $NetBSD: acpi_wakedev.c,v 1.2.2.3 2010/03/11 15:03:22 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /*- 4 1.2.2.2 yamt * Copyright (c) 2009 Jared D. McNeill <jmcneill (at) invisible.ca> 5 1.2.2.2 yamt * All rights reserved. 6 1.2.2.2 yamt * 7 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 yamt * modification, are permitted provided that the following conditions 9 1.2.2.2 yamt * are met: 10 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 15 1.2.2.2 yamt * 16 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.2.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.2.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.2.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.2.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.2.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 27 1.2.2.2 yamt */ 28 1.2.2.2 yamt 29 1.2.2.2 yamt #include <sys/cdefs.h> 30 1.2.2.3 yamt __KERNEL_RCSID(0, "$NetBSD: acpi_wakedev.c,v 1.2.2.3 2010/03/11 15:03:22 yamt Exp $"); 31 1.2.2.2 yamt 32 1.2.2.2 yamt #include <sys/param.h> 33 1.2.2.2 yamt #include <sys/device.h> 34 1.2.2.3 yamt #include <sys/kmem.h> 35 1.2.2.2 yamt #include <sys/queue.h> 36 1.2.2.2 yamt #include <sys/sysctl.h> 37 1.2.2.3 yamt #include <sys/systm.h> 38 1.2.2.2 yamt 39 1.2.2.2 yamt #include <dev/acpi/acpireg.h> 40 1.2.2.3 yamt #include <dev/acpi/acpivar.h> 41 1.2.2.2 yamt #include <dev/acpi/acpi_wakedev.h> 42 1.2.2.2 yamt 43 1.2.2.3 yamt #define _COMPONENT ACPI_BUS_COMPONENT 44 1.2.2.3 yamt ACPI_MODULE_NAME ("acpi_wakedev") 45 1.2.2.3 yamt 46 1.2.2.3 yamt struct acpi_wakedev { 47 1.2.2.3 yamt struct acpi_devnode *aw_node; 48 1.2.2.3 yamt struct sysctllog *aw_sysctllog; 49 1.2.2.3 yamt int aw_enabled; 50 1.2.2.3 yamt 51 1.2.2.3 yamt TAILQ_ENTRY(acpi_wakedev) aw_list; 52 1.2.2.3 yamt }; 53 1.2.2.3 yamt 54 1.2.2.2 yamt struct acpi_wakedev; 55 1.2.2.3 yamt static int acpi_wakedev_node = -1; 56 1.2.2.2 yamt 57 1.2.2.2 yamt static TAILQ_HEAD(, acpi_wakedev) acpi_wakedevlist = 58 1.2.2.2 yamt TAILQ_HEAD_INITIALIZER(acpi_wakedevlist); 59 1.2.2.2 yamt 60 1.2.2.2 yamt static const char * const acpi_wakedev_default[] = { 61 1.2.2.2 yamt "PNP0C0C", /* power button */ 62 1.2.2.2 yamt "PNP0C0E", /* sleep button */ 63 1.2.2.2 yamt "PNP0C0D", /* lid switch */ 64 1.2.2.2 yamt "PNP03??", /* PC KBD port */ 65 1.2.2.2 yamt NULL, 66 1.2.2.2 yamt }; 67 1.2.2.2 yamt 68 1.2.2.3 yamt static void acpi_wakedev_sysctl_add(struct acpi_wakedev *); 69 1.2.2.3 yamt static bool acpi_wakedev_add(struct acpi_softc *, struct acpi_devnode *); 70 1.2.2.3 yamt static void acpi_wakedev_print(struct acpi_wakedev *); 71 1.2.2.3 yamt static void acpi_wakedev_prepare(struct acpi_devnode *, int, int); 72 1.2.2.3 yamt 73 1.2.2.2 yamt SYSCTL_SETUP(sysctl_acpi_wakedev_setup, "sysctl hw.wake subtree setup") 74 1.2.2.2 yamt { 75 1.2.2.2 yamt const struct sysctlnode *rnode; 76 1.2.2.2 yamt int err; 77 1.2.2.2 yamt 78 1.2.2.2 yamt err = sysctl_createv(NULL, 0, NULL, NULL, 79 1.2.2.2 yamt CTLFLAG_PERMANENT, 80 1.2.2.2 yamt CTLTYPE_NODE, "hw", NULL, 81 1.2.2.2 yamt NULL, 0, NULL, 0, CTL_HW, CTL_EOL); 82 1.2.2.2 yamt if (err) 83 1.2.2.2 yamt return; 84 1.2.2.2 yamt err = sysctl_createv(NULL, 0, NULL, &rnode, 85 1.2.2.2 yamt CTLFLAG_PERMANENT, 86 1.2.2.2 yamt CTLTYPE_NODE, "wake", NULL, 87 1.2.2.2 yamt NULL, 0, NULL, 0, 88 1.2.2.2 yamt CTL_HW, CTL_CREATE, CTL_EOL); 89 1.2.2.2 yamt if (err) 90 1.2.2.2 yamt return; 91 1.2.2.2 yamt acpi_wakedev_node = rnode->sysctl_num; 92 1.2.2.2 yamt } 93 1.2.2.2 yamt 94 1.2.2.2 yamt static void 95 1.2.2.2 yamt acpi_wakedev_sysctl_add(struct acpi_wakedev *aw) 96 1.2.2.2 yamt { 97 1.2.2.2 yamt int err; 98 1.2.2.2 yamt 99 1.2.2.2 yamt if (acpi_wakedev_node == -1) 100 1.2.2.2 yamt return; 101 1.2.2.2 yamt 102 1.2.2.2 yamt err = sysctl_createv(&aw->aw_sysctllog, 0, NULL, NULL, 103 1.2.2.2 yamt CTLFLAG_READWRITE, CTLTYPE_INT, aw->aw_node->ad_name, 104 1.2.2.2 yamt NULL, NULL, 0, &aw->aw_enabled, 0, 105 1.2.2.2 yamt CTL_HW, acpi_wakedev_node, CTL_CREATE, CTL_EOL); 106 1.2.2.2 yamt if (err) 107 1.2.2.3 yamt aprint_error("%s: sysctl_createv(hw.wake.%s) failed (%d)\n", 108 1.2.2.3 yamt __func__, aw->aw_node->ad_name, err); 109 1.2.2.2 yamt } 110 1.2.2.2 yamt 111 1.2.2.2 yamt static bool 112 1.2.2.2 yamt acpi_wakedev_add(struct acpi_softc *sc, struct acpi_devnode *ad) 113 1.2.2.2 yamt { 114 1.2.2.2 yamt struct acpi_wakedev *aw; 115 1.2.2.2 yamt ACPI_HANDLE hdl; 116 1.2.2.2 yamt 117 1.2.2.2 yamt if (ACPI_FAILURE(AcpiGetHandle(ad->ad_handle, "_PRW", &hdl))) 118 1.2.2.2 yamt return false; 119 1.2.2.2 yamt 120 1.2.2.2 yamt aw = kmem_alloc(sizeof(*aw), KM_SLEEP); 121 1.2.2.2 yamt if (aw == NULL) { 122 1.2.2.3 yamt aprint_error("%s: kmem_alloc failed\n", __func__); 123 1.2.2.2 yamt return false; 124 1.2.2.2 yamt } 125 1.2.2.2 yamt aw->aw_node = ad; 126 1.2.2.2 yamt aw->aw_sysctllog = NULL; 127 1.2.2.2 yamt if (acpi_match_hid(ad->ad_devinfo, acpi_wakedev_default)) 128 1.2.2.2 yamt aw->aw_enabled = 1; 129 1.2.2.2 yamt else 130 1.2.2.2 yamt aw->aw_enabled = 0; 131 1.2.2.2 yamt 132 1.2.2.2 yamt TAILQ_INSERT_TAIL(&acpi_wakedevlist, aw, aw_list); 133 1.2.2.2 yamt 134 1.2.2.2 yamt acpi_wakedev_sysctl_add(aw); 135 1.2.2.2 yamt 136 1.2.2.2 yamt return true; 137 1.2.2.2 yamt } 138 1.2.2.2 yamt 139 1.2.2.2 yamt static void 140 1.2.2.2 yamt acpi_wakedev_print(struct acpi_wakedev *aw) 141 1.2.2.2 yamt { 142 1.2.2.2 yamt aprint_debug(" %s", aw->aw_node->ad_name); 143 1.2.2.2 yamt } 144 1.2.2.2 yamt 145 1.2.2.2 yamt int 146 1.2.2.2 yamt acpi_wakedev_scan(struct acpi_softc *sc) 147 1.2.2.2 yamt { 148 1.2.2.2 yamt struct acpi_devnode *ad; 149 1.2.2.2 yamt struct acpi_wakedev *aw; 150 1.2.2.2 yamt ACPI_DEVICE_INFO *di; 151 1.2.2.2 yamt int count = 0; 152 1.2.2.2 yamt 153 1.2.2.2 yamt #define ACPI_STA_DEV_VALID \ 154 1.2.2.2 yamt (ACPI_STA_DEV_PRESENT|ACPI_STA_DEV_ENABLED|ACPI_STA_DEV_OK) 155 1.2.2.2 yamt 156 1.2.2.3 yamt SIMPLEQ_FOREACH(ad, &sc->sc_devnodes, ad_list) { 157 1.2.2.3 yamt 158 1.2.2.3 yamt di = ad->ad_devinfo; 159 1.2.2.3 yamt 160 1.2.2.3 yamt if (di->Type != ACPI_TYPE_DEVICE) 161 1.2.2.3 yamt continue; 162 1.2.2.3 yamt 163 1.2.2.3 yamt if ((di->Valid & ACPI_VALID_STA) != 0 && 164 1.2.2.3 yamt (di->CurrentStatus & ACPI_STA_DEV_VALID) != 165 1.2.2.3 yamt ACPI_STA_DEV_VALID) 166 1.2.2.3 yamt continue; 167 1.2.2.3 yamt 168 1.2.2.3 yamt if (acpi_wakedev_add(sc, ad) == true) 169 1.2.2.3 yamt ++count; 170 1.2.2.3 yamt } 171 1.2.2.2 yamt 172 1.2.2.2 yamt #undef ACPI_STA_DEV_VALID 173 1.2.2.2 yamt 174 1.2.2.2 yamt if (count == 0) 175 1.2.2.2 yamt return 0; 176 1.2.2.2 yamt 177 1.2.2.2 yamt aprint_debug_dev(sc->sc_dev, "wakeup devices:"); 178 1.2.2.2 yamt TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) 179 1.2.2.2 yamt acpi_wakedev_print(aw); 180 1.2.2.2 yamt aprint_debug("\n"); 181 1.2.2.2 yamt 182 1.2.2.2 yamt return count; 183 1.2.2.2 yamt } 184 1.2.2.2 yamt 185 1.2.2.2 yamt void 186 1.2.2.3 yamt acpi_wakedev_commit(struct acpi_softc *sc, int state) 187 1.2.2.2 yamt { 188 1.2.2.2 yamt struct acpi_wakedev *aw; 189 1.2.2.2 yamt 190 1.2.2.3 yamt /* 191 1.2.2.3 yamt * As noted in ACPI 3.0 (p. 243), preparing 192 1.2.2.3 yamt * a device for wakeup is a two-step process: 193 1.2.2.3 yamt * 194 1.2.2.3 yamt * 1. Enable all power resources in _PRW. 195 1.2.2.3 yamt * 196 1.2.2.3 yamt * 2. If present, execute _DSW/_PSW method. 197 1.2.2.3 yamt * 198 1.2.2.3 yamt * XXX: The first one is yet to be implemented. 199 1.2.2.3 yamt */ 200 1.2.2.2 yamt TAILQ_FOREACH(aw, &acpi_wakedevlist, aw_list) { 201 1.2.2.3 yamt 202 1.2.2.2 yamt if (aw->aw_enabled) { 203 1.2.2.2 yamt aprint_debug_dev(sc->sc_dev, "set wake GPE (%s)\n", 204 1.2.2.2 yamt aw->aw_node->ad_name); 205 1.2.2.2 yamt acpi_set_wake_gpe(aw->aw_node->ad_handle); 206 1.2.2.2 yamt } else 207 1.2.2.2 yamt acpi_clear_wake_gpe(aw->aw_node->ad_handle); 208 1.2.2.3 yamt 209 1.2.2.3 yamt acpi_wakedev_prepare(aw->aw_node, aw->aw_enabled, state); 210 1.2.2.2 yamt } 211 1.2.2.2 yamt } 212 1.2.2.3 yamt 213 1.2.2.3 yamt static void 214 1.2.2.3 yamt acpi_wakedev_prepare(struct acpi_devnode *ad, int enable, int state) 215 1.2.2.3 yamt { 216 1.2.2.3 yamt ACPI_OBJECT_LIST arg; 217 1.2.2.3 yamt ACPI_OBJECT obj[3]; 218 1.2.2.3 yamt ACPI_STATUS rv; 219 1.2.2.3 yamt 220 1.2.2.3 yamt /* 221 1.2.2.3 yamt * First try to call the Device Sleep Wake control method, _DSW. 222 1.2.2.3 yamt * Only if this is not available, resort to to the Power State 223 1.2.2.3 yamt * Wake control method, _PSW, which was deprecated in ACPI 3.0. 224 1.2.2.3 yamt * 225 1.2.2.3 yamt * The arguments to these methods are as follows: 226 1.2.2.3 yamt * 227 1.2.2.3 yamt * arg0 arg1 arg2 228 1.2.2.3 yamt * ---- ---- ---- 229 1.2.2.3 yamt * _PSW 0: disable 230 1.2.2.3 yamt * 1: enable 231 1.2.2.3 yamt * 232 1.2.2.3 yamt * _DSW 0: disable 0: S0 0: D0 233 1.2.2.3 yamt * 1: enable 1: S1 1: D0 or D1 234 1.2.2.3 yamt * 2: D0, D1, or D2 235 1.2.2.3 yamt * x: Sx 3: D0, D1, D2 or D3 236 1.2.2.3 yamt */ 237 1.2.2.3 yamt arg.Count = 3; 238 1.2.2.3 yamt arg.Pointer = obj; 239 1.2.2.3 yamt 240 1.2.2.3 yamt obj[0].Integer.Value = enable; 241 1.2.2.3 yamt obj[1].Integer.Value = state; 242 1.2.2.3 yamt obj[2].Integer.Value = 3; 243 1.2.2.3 yamt 244 1.2.2.3 yamt obj[0].Type = obj[1].Type = obj[2].Type = ACPI_TYPE_INTEGER; 245 1.2.2.3 yamt 246 1.2.2.3 yamt rv = AcpiEvaluateObject(ad->ad_handle, "_DSW", &arg, NULL); 247 1.2.2.3 yamt 248 1.2.2.3 yamt if (ACPI_SUCCESS(rv)) 249 1.2.2.3 yamt return; 250 1.2.2.3 yamt 251 1.2.2.3 yamt if (rv != AE_NOT_FOUND) 252 1.2.2.3 yamt goto fail; 253 1.2.2.3 yamt 254 1.2.2.3 yamt rv = acpi_eval_set_integer(ad->ad_handle, "_PSW", enable); 255 1.2.2.3 yamt 256 1.2.2.3 yamt if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) 257 1.2.2.3 yamt goto fail; 258 1.2.2.3 yamt 259 1.2.2.3 yamt return; 260 1.2.2.3 yamt 261 1.2.2.3 yamt fail: 262 1.2.2.3 yamt aprint_error_dev(ad->ad_device, "failed to evaluate wake " 263 1.2.2.3 yamt "control method: %s\n", AcpiFormatException(rv)); 264 1.2.2.3 yamt } 265
Indexes created Wed Oct 01 19:09:53 GMT 2025