1 /* $NetBSD: acpi_button.c,v 1.42 2015/04/23 23:23:00 pgoyette Exp $ */ 2 3 /* 4 * Copyright 2001, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * ACPI Button driver. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: acpi_button.c,v 1.42 2015/04/23 23:23:00 pgoyette Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/device.h> 47 #include <sys/module.h> 48 #include <sys/systm.h> 49 50 #include <dev/acpi/acpireg.h> 51 #include <dev/acpi/acpivar.h> 52 #include <dev/acpi/acpi_wakedev.h> 53 54 #define _COMPONENT ACPI_BUTTON_COMPONENT 55 ACPI_MODULE_NAME ("acpi_button") 56 57 #define ACPI_NOTIFY_BUTTON 0x80 58 59 struct acpibut_softc { 60 struct acpi_devnode *sc_node; 61 struct sysmon_pswitch sc_smpsw; 62 }; 63 64 static const char * const power_button_hid[] = { 65 "PNP0C0C", 66 NULL 67 }; 68 69 static const char * const sleep_button_hid[] = { 70 "PNP0C0E", 71 NULL 72 }; 73 74 static int acpibut_match(device_t, cfdata_t, void *); 75 static void acpibut_attach(device_t, device_t, void *); 76 static int acpibut_detach(device_t, int); 77 static void acpibut_pressed_event(void *); 78 static void acpibut_notify_handler(ACPI_HANDLE, uint32_t, void *); 79 80 CFATTACH_DECL_NEW(acpibut, sizeof(struct acpibut_softc), 81 acpibut_match, acpibut_attach, acpibut_detach, NULL); 82 83 /* 84 * acpibut_match: 85 * 86 * Autoconfiguration `match' routine. 87 */ 88 static int 89 acpibut_match(device_t parent, cfdata_t match, void *aux) 90 { 91 struct acpi_attach_args *aa = aux; 92 93 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 94 return 0; 95 96 if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) 97 return 1; 98 99 if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) 100 return 1; 101 102 return 0; 103 } 104 105 /* 106 * acpibut_attach: 107 * 108 * Autoconfiguration `attach' routine. 109 */ 110 static void 111 acpibut_attach(device_t parent, device_t self, void *aux) 112 { 113 struct acpibut_softc *sc = device_private(self); 114 struct acpi_attach_args *aa = aux; 115 struct acpi_wakedev *aw; 116 const char *desc; 117 118 sc->sc_smpsw.smpsw_name = device_xname(self); 119 120 if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) { 121 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; 122 desc = "Power"; 123 } else if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) { 124 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_SLEEP; 125 desc = "Sleep"; 126 } else 127 panic("%s: impossible", __func__); 128 129 aprint_naive(": ACPI %s Button\n", desc); 130 aprint_normal(": ACPI %s Button\n", desc); 131 132 sc->sc_node = aa->aa_node; 133 aw = sc->sc_node->ad_wakedev; 134 135 /* 136 * This GPE should always be enabled. 137 */ 138 if (aw != NULL) 139 (void)AcpiEnableGpe(aw->aw_handle, aw->aw_number); 140 141 (void)pmf_device_register(self, NULL, NULL); 142 (void)sysmon_pswitch_register(&sc->sc_smpsw); 143 (void)acpi_register_notify(sc->sc_node, acpibut_notify_handler); 144 } 145 146 /* 147 * acpibut_detach: 148 * 149 * Autoconfiguration `detach' routine. 150 */ 151 static int 152 acpibut_detach(device_t self, int flags) 153 { 154 struct acpibut_softc *sc = device_private(self); 155 156 pmf_device_deregister(self); 157 acpi_deregister_notify(sc->sc_node); 158 sysmon_pswitch_unregister(&sc->sc_smpsw); 159 160 return 0; 161 } 162 163 /* 164 * acpibut_pressed_event: 165 * 166 * Deal with a button being pressed. 167 */ 168 static void 169 acpibut_pressed_event(void *arg) 170 { 171 device_t dv = arg; 172 struct acpibut_softc *sc = device_private(dv); 173 174 aprint_debug_dev(dv, "button pressed\n"); 175 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 176 } 177 178 /* 179 * acpibut_notify_handler: 180 * 181 * Callback from ACPI interrupt handler to notify us of an event. 182 */ 183 static void 184 acpibut_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 185 { 186 static const int handler = OSL_NOTIFY_HANDLER; 187 device_t dv = context; 188 189 switch (notify) { 190 191 case ACPI_NOTIFY_BUTTON: 192 (void)AcpiOsExecute(handler, acpibut_pressed_event, dv); 193 break; 194 195 case ACPI_NOTIFY_DEVICE_WAKE: 196 break; 197 198 default: 199 aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify); 200 } 201 } 202 203 MODULE(MODULE_CLASS_DRIVER, acpibut, "sysmon_power"); 204 205 #ifdef _MODULE 206 #include "ioconf.c" 207 #endif 208 209 static int 210 acpibut_modcmd(modcmd_t cmd, void *aux) 211 { 212 int rv = 0; 213 214 switch (cmd) { 215 216 case MODULE_CMD_INIT: 217 218 #ifdef _MODULE 219 rv = config_init_component(cfdriver_ioconf_acpibut, 220 cfattach_ioconf_acpibut, cfdata_ioconf_acpibut); 221 #endif 222 break; 223 224 case MODULE_CMD_FINI: 225 226 #ifdef _MODULE 227 rv = config_fini_component(cfdriver_ioconf_acpibut, 228 cfattach_ioconf_acpibut, cfdata_ioconf_acpibut); 229 #endif 230 break; 231 232 default: 233 rv = ENOTTY; 234 } 235 236 return rv; 237 } 238