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 | |