| 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 | |