1 /* $NetBSD: acpi_button.c,v 1.35 2010/04/15 07:02:24 jruoho 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 1.35 2010/04/15 07:02:24 jruoho 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 53 #define _COMPONENT ACPI_BUTTON_COMPONENT 54 ACPI_MODULE_NAME ("acpi_button") 55 56 struct acpibut_softc { 57 struct acpi_devnode *sc_node; 58 struct sysmon_pswitch sc_smpsw; 59 }; 60 61 static const char * const power_button_hid[] = { 62 "PNP0C0C", 63 NULL 64 }; 65 66 static const char * const sleep_button_hid[] = { 67 "PNP0C0E", 68 NULL 69 }; 70 71 static int acpibut_match(device_t, cfdata_t, void *); 72 static void acpibut_attach(device_t, device_t, void *); 73 static int acpibut_detach(device_t, int); 74 static void acpibut_pressed_event(void *); 75 static void acpibut_notify_handler(ACPI_HANDLE, uint32_t, void *); 76 77 CFATTACH_DECL_NEW(acpibut, sizeof(struct acpibut_softc), 78 acpibut_match, acpibut_attach, acpibut_detach, NULL); 79 80 /* 81 * acpibut_match: 82 * 83 * Autoconfiguration `match' routine. 84 */ 85 static int 86 acpibut_match(device_t parent, cfdata_t match, void *aux) 87 { 88 struct acpi_attach_args *aa = aux; 89 90 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 91 return 0; 92 93 if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) 94 return 1; 95 96 if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) 97 return 1; 98 99 return 0; 100 } 101 102 /* 103 * acpibut_attach: 104 * 105 * Autoconfiguration `attach' routine. 106 */ 107 static void 108 acpibut_attach(device_t parent, device_t self, void *aux) 109 { 110 struct acpibut_softc *sc = device_private(self); 111 struct acpi_attach_args *aa = aux; 112 const char *desc; 113 114 sc->sc_smpsw.smpsw_name = device_xname(self); 115 116 if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) { 117 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; 118 desc = "Power"; 119 } else if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) { 120 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_SLEEP; 121 desc = "Sleep"; 122 } else 123 panic("%s: impossible", __func__); 124 125 aprint_naive(": ACPI %s Button\n", desc); 126 aprint_normal(": ACPI %s Button\n", desc); 127 128 sc->sc_node = aa->aa_node; 129 130 (void)pmf_device_register(self, NULL, NULL); 131 (void)sysmon_pswitch_register(&sc->sc_smpsw); 132 (void)acpi_register_notify(sc->sc_node, acpibut_notify_handler); 133 } 134 135 /* 136 * acpibut_detach: 137 * 138 * Autoconfiguration `detach' routine. 139 */ 140 static int 141 acpibut_detach(device_t self, int flags) 142 { 143 struct acpibut_softc *sc = device_private(self); 144 145 pmf_device_deregister(self); 146 acpi_deregister_notify(sc->sc_node); 147 sysmon_pswitch_unregister(&sc->sc_smpsw); 148 149 return 0; 150 } 151 152 /* 153 * acpibut_pressed_event: 154 * 155 * Deal with a button being pressed. 156 */ 157 static void 158 acpibut_pressed_event(void *arg) 159 { 160 device_t dv = arg; 161 struct acpibut_softc *sc = device_private(dv); 162 163 aprint_debug_dev(dv, "button pressed\n"); 164 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 165 } 166 167 /* 168 * acpibut_notify_handler: 169 * 170 * Callback from ACPI interrupt handler to notify us of an event. 171 */ 172 static void 173 acpibut_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) 174 { 175 static const int handler = OSL_NOTIFY_HANDLER; 176 device_t dv = context; 177 178 switch (notify) { 179 180 /* case ACPI_NOTIFY_S0SleepButtonPressed: */ 181 case ACPI_NOTIFY_S0PowerButtonPressed: 182 (void)AcpiOsExecute(handler, acpibut_pressed_event, dv); 183 break; 184 185 default: 186 aprint_error_dev(dv, "unknown notify 0x%02X\n", notify); 187 } 188 } 189 190 #ifdef _MODULE 191 192 MODULE(MODULE_CLASS_DRIVER, acpibut, NULL); 193 CFDRIVER_DECL(acpibut, DV_DULL, NULL); 194 195 static int acpibutloc[] = { -1 }; 196 extern struct cfattach acpibut_ca; 197 198 static struct cfparent acpiparent = { 199 "acpinodebus", NULL, DVUNIT_ANY 200 }; 201 202 static struct cfdata acpibut_cfdata[] = { 203 { 204 .cf_name = "acpibut", 205 .cf_atname = "acpibut", 206 .cf_unit = 0, 207 .cf_fstate = FSTATE_STAR, 208 .cf_loc = acpibutloc, 209 .cf_flags = 0, 210 .cf_pspec = &acpiparent, 211 }, 212 213 { NULL } 214 }; 215 216 static int 217 acpibut_modcmd(modcmd_t cmd, void *context) 218 { 219 int err; 220 221 switch (cmd) { 222 223 case MODULE_CMD_INIT: 224 225 err = config_cfdriver_attach(&acpibut_cd); 226 227 if (err != 0) 228 return err; 229 230 err = config_cfattach_attach("acpibut", &acpibut_ca); 231 232 if (err != 0) { 233 config_cfdriver_detach(&acpibut_cd); 234 return err; 235 } 236 237 err = config_cfdata_attach(acpibut_cfdata, 1); 238 239 if (err != 0) { 240 config_cfattach_detach("acpibut", &acpibut_ca); 241 config_cfdriver_detach(&acpibut_cd); 242 return err; 243 } 244 245 return 0; 246 247 case MODULE_CMD_FINI: 248 249 err = config_cfdata_detach(acpibut_cfdata); 250 251 if (err != 0) 252 return err; 253 254 config_cfattach_detach("acpibut", &acpibut_ca); 255 config_cfdriver_detach(&acpibut_cd); 256 257 return 0; 258 259 default: 260 return ENOTTY; 261 } 262 } 263 264 #endif /* _MODULE */ 265