| 1 | /* $NetBSD: wmi_msi.c,v 1.5 2011/02/16 13:15:49 jruoho Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2010 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Jukka Ruohonen. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: wmi_msi.c,v 1.5 2011/02/16 13:15:49 jruoho Exp $" ); |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/device.h> |
| 38 | #include <sys/module.h> |
| 39 | |
| 40 | #include <dev/acpi/acpireg.h> |
| 41 | #include <dev/acpi/acpivar.h> |
| 42 | #include <dev/acpi/wmi/wmi_acpivar.h> |
| 43 | |
| 44 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
| 45 | ACPI_MODULE_NAME ("wmi_msi" ) |
| 46 | |
| 47 | #define WMI_MSI_HOTKEY_BRIGHTNESS_UP 0xD0 |
| 48 | #define WMI_MSI_HOTKEY_BRIGHTNESS_DOWN 0xD1 |
| 49 | #define WMI_MSI_HOTKEY_VOLUME_UP 0xD2 |
| 50 | #define WMI_MSI_HOTKEY_VOLUME_DOWN 0xD3 |
| 51 | /* WMI_MSI_HOTKEY_UNKNOWN 0xXXXX */ |
| 52 | |
| 53 | #define WMI_MSI_GUID_EVENT "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2" |
| 54 | |
| 55 | struct wmi_msi_softc { |
| 56 | device_t sc_dev; |
| 57 | device_t sc_parent; |
| 58 | }; |
| 59 | |
| 60 | static int wmi_msi_match(device_t, cfdata_t, void *); |
| 61 | static void wmi_msi_attach(device_t, device_t, void *); |
| 62 | static int wmi_msi_detach(device_t, int); |
| 63 | static void wmi_msi_notify_handler(ACPI_HANDLE, uint32_t, void *); |
| 64 | static bool wmi_msi_suspend(device_t, const pmf_qual_t *); |
| 65 | static bool wmi_msi_resume(device_t, const pmf_qual_t *); |
| 66 | |
| 67 | CFATTACH_DECL_NEW(wmimsi, sizeof(struct wmi_msi_softc), |
| 68 | wmi_msi_match, wmi_msi_attach, wmi_msi_detach, NULL); |
| 69 | |
| 70 | static int |
| 71 | wmi_msi_match(device_t parent, cfdata_t match, void *aux) |
| 72 | { |
| 73 | return acpi_wmi_guid_match(parent, WMI_MSI_GUID_EVENT); |
| 74 | } |
| 75 | |
| 76 | static void |
| 77 | wmi_msi_attach(device_t parent, device_t self, void *aux) |
| 78 | { |
| 79 | struct wmi_msi_softc *sc = device_private(self); |
| 80 | ACPI_STATUS rv; |
| 81 | |
| 82 | sc->sc_dev = self; |
| 83 | sc->sc_parent = parent; |
| 84 | |
| 85 | rv = acpi_wmi_event_register(parent, wmi_msi_notify_handler); |
| 86 | |
| 87 | if (ACPI_FAILURE(rv)) { |
| 88 | aprint_error(": failed to install WMI notify handler\n" ); |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | aprint_naive("\n" ); |
| 93 | aprint_normal(": MSI WMI mappings\n" ); |
| 94 | |
| 95 | (void)pmf_device_register(self, wmi_msi_suspend, wmi_msi_resume); |
| 96 | } |
| 97 | |
| 98 | static int |
| 99 | wmi_msi_detach(device_t self, int flags) |
| 100 | { |
| 101 | struct wmi_msi_softc *sc = device_private(self); |
| 102 | device_t parent = sc->sc_parent; |
| 103 | |
| 104 | (void)pmf_device_deregister(self); |
| 105 | (void)acpi_wmi_event_deregister(parent); |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | static bool |
| 111 | wmi_msi_suspend(device_t self, const pmf_qual_t *qual) |
| 112 | { |
| 113 | struct wmi_msi_softc *sc = device_private(self); |
| 114 | device_t parent = sc->sc_parent; |
| 115 | |
| 116 | (void)acpi_wmi_event_deregister(parent); |
| 117 | |
| 118 | return true; |
| 119 | } |
| 120 | |
| 121 | static bool |
| 122 | wmi_msi_resume(device_t self, const pmf_qual_t *qual) |
| 123 | { |
| 124 | struct wmi_msi_softc *sc = device_private(self); |
| 125 | device_t parent = sc->sc_parent; |
| 126 | |
| 127 | (void)acpi_wmi_event_register(parent, wmi_msi_notify_handler); |
| 128 | |
| 129 | return true; |
| 130 | } |
| 131 | |
| 132 | static void |
| 133 | wmi_msi_notify_handler(ACPI_HANDLE hdl, uint32_t evt, void *aux) |
| 134 | { |
| 135 | struct wmi_msi_softc *sc; |
| 136 | device_t self = aux; |
| 137 | ACPI_OBJECT *obj; |
| 138 | ACPI_BUFFER buf; |
| 139 | ACPI_STATUS rv; |
| 140 | uint32_t val; |
| 141 | |
| 142 | buf.Pointer = NULL; |
| 143 | |
| 144 | sc = device_private(self); |
| 145 | rv = acpi_wmi_event_get(sc->sc_parent, evt, &buf); |
| 146 | |
| 147 | if (ACPI_FAILURE(rv)) |
| 148 | goto out; |
| 149 | |
| 150 | obj = buf.Pointer; |
| 151 | |
| 152 | if (obj->Type != ACPI_TYPE_INTEGER) { |
| 153 | rv = AE_TYPE; |
| 154 | goto out; |
| 155 | } |
| 156 | |
| 157 | if (obj->Integer.Value > UINT32_MAX) { |
| 158 | rv = AE_AML_NUMERIC_OVERFLOW; |
| 159 | goto out; |
| 160 | } |
| 161 | |
| 162 | val = obj->Integer.Value; |
| 163 | |
| 164 | switch (val) { |
| 165 | |
| 166 | case WMI_MSI_HOTKEY_BRIGHTNESS_DOWN: |
| 167 | pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN); |
| 168 | break; |
| 169 | |
| 170 | case WMI_MSI_HOTKEY_BRIGHTNESS_UP: |
| 171 | pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP); |
| 172 | break; |
| 173 | |
| 174 | case WMI_MSI_HOTKEY_VOLUME_DOWN: |
| 175 | pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN); |
| 176 | break; |
| 177 | |
| 178 | case WMI_MSI_HOTKEY_VOLUME_UP: |
| 179 | pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP); |
| 180 | break; |
| 181 | |
| 182 | default: |
| 183 | aprint_normal_dev(sc->sc_dev, |
| 184 | "unknown key 0x%02X for event 0x%02X\n" , val, evt); |
| 185 | break; |
| 186 | } |
| 187 | |
| 188 | out: |
| 189 | if (buf.Pointer != NULL) |
| 190 | ACPI_FREE(buf.Pointer); |
| 191 | |
| 192 | if (ACPI_FAILURE(rv)) |
| 193 | aprint_error_dev(sc->sc_dev, "failed to get data for " |
| 194 | "event 0x%02X: %s\n" , evt, AcpiFormatException(rv)); |
| 195 | } |
| 196 | |
| 197 | MODULE(MODULE_CLASS_DRIVER, wmimsi, "acpiwmi" ); |
| 198 | |
| 199 | #ifdef _MODULE |
| 200 | #include "ioconf.c" |
| 201 | #endif |
| 202 | |
| 203 | static int |
| 204 | wmimsi_modcmd(modcmd_t cmd, void *aux) |
| 205 | { |
| 206 | int rv = 0; |
| 207 | |
| 208 | switch (cmd) { |
| 209 | |
| 210 | case MODULE_CMD_INIT: |
| 211 | |
| 212 | #ifdef _MODULE |
| 213 | rv = config_init_component(cfdriver_ioconf_wmimsi, |
| 214 | cfattach_ioconf_wmimsi, cfdata_ioconf_wmimsi); |
| 215 | #endif |
| 216 | break; |
| 217 | |
| 218 | case MODULE_CMD_FINI: |
| 219 | |
| 220 | #ifdef _MODULE |
| 221 | rv = config_fini_component(cfdriver_ioconf_wmimsi, |
| 222 | cfattach_ioconf_wmimsi, cfdata_ioconf_wmimsi); |
| 223 | #endif |
| 224 | break; |
| 225 | |
| 226 | default: |
| 227 | rv = ENOTTY; |
| 228 | } |
| 229 | |
| 230 | return rv; |
| 231 | } |
| 232 | |