1 | /* $NetBSD: acpi_lid.c,v 1.44 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 Lid Switch driver. |
40 | */ |
41 | |
42 | #include <sys/cdefs.h> |
43 | __KERNEL_RCSID(0, "$NetBSD: acpi_lid.c,v 1.44 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 | |
53 | #define _COMPONENT ACPI_LID_COMPONENT |
54 | ACPI_MODULE_NAME ("acpi_lid" ) |
55 | |
56 | #define ACPI_NOTIFY_LID 0x80 |
57 | |
58 | struct acpilid_softc { |
59 | struct acpi_devnode *sc_node; |
60 | struct sysmon_pswitch sc_smpsw; |
61 | uint64_t sc_status; |
62 | }; |
63 | |
64 | static const char * const lid_hid[] = { |
65 | "PNP0C0D" , |
66 | NULL |
67 | }; |
68 | |
69 | static int acpilid_match(device_t, cfdata_t, void *); |
70 | static void acpilid_attach(device_t, device_t, void *); |
71 | static int acpilid_detach(device_t, int); |
72 | static void acpilid_status_changed(void *); |
73 | static void acpilid_notify_handler(ACPI_HANDLE, uint32_t, void *); |
74 | |
75 | CFATTACH_DECL_NEW(acpilid, sizeof(struct acpilid_softc), |
76 | acpilid_match, acpilid_attach, acpilid_detach, NULL); |
77 | |
78 | /* |
79 | * acpilid_match: |
80 | * |
81 | * Autoconfiguration `match' routine. |
82 | */ |
83 | static int |
84 | acpilid_match(device_t parent, cfdata_t match, void *aux) |
85 | { |
86 | struct acpi_attach_args *aa = aux; |
87 | |
88 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
89 | return 0; |
90 | |
91 | return acpi_match_hid(aa->aa_node->ad_devinfo, lid_hid); |
92 | } |
93 | |
94 | /* |
95 | * acpilid_attach: |
96 | * |
97 | * Autoconfiguration `attach' routine. |
98 | */ |
99 | static void |
100 | acpilid_attach(device_t parent, device_t self, void *aux) |
101 | { |
102 | struct acpilid_softc *sc = device_private(self); |
103 | struct acpi_attach_args *aa = aux; |
104 | |
105 | aprint_naive(": ACPI Lid Switch\n" ); |
106 | aprint_normal(": ACPI Lid Switch\n" ); |
107 | |
108 | sc->sc_node = aa->aa_node; |
109 | |
110 | sc->sc_smpsw.smpsw_name = device_xname(self); |
111 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_LID; |
112 | |
113 | (void)pmf_device_register(self, NULL, NULL); |
114 | (void)sysmon_pswitch_register(&sc->sc_smpsw); |
115 | (void)acpi_register_notify(sc->sc_node, acpilid_notify_handler); |
116 | } |
117 | |
118 | static int |
119 | acpilid_detach(device_t self, int flags) |
120 | { |
121 | struct acpilid_softc *sc = device_private(self); |
122 | |
123 | pmf_device_deregister(self); |
124 | acpi_deregister_notify(sc->sc_node); |
125 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
126 | |
127 | return 0; |
128 | } |
129 | |
130 | /* |
131 | * acpilid_status_changed: |
132 | * |
133 | * Get, and possibly display, the lid status, and take action. |
134 | */ |
135 | static void |
136 | acpilid_status_changed(void *arg) |
137 | { |
138 | device_t dv = arg; |
139 | struct acpilid_softc *sc = device_private(dv); |
140 | ACPI_STATUS rv; |
141 | |
142 | rv = acpi_eval_integer(sc->sc_node->ad_handle, "_LID" , &sc->sc_status); |
143 | |
144 | if (ACPI_FAILURE(rv)) |
145 | return; |
146 | |
147 | sysmon_pswitch_event(&sc->sc_smpsw, (sc->sc_status == 0) ? |
148 | PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); |
149 | } |
150 | |
151 | /* |
152 | * acpilid_notify_handler: |
153 | * |
154 | * Callback from ACPI interrupt handler to notify us of an event. |
155 | */ |
156 | static void |
157 | acpilid_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) |
158 | { |
159 | static const int handler = OSL_NOTIFY_HANDLER; |
160 | device_t dv = context; |
161 | |
162 | switch (notify) { |
163 | |
164 | case ACPI_NOTIFY_LID: |
165 | (void)AcpiOsExecute(handler, acpilid_status_changed, dv); |
166 | break; |
167 | |
168 | case ACPI_NOTIFY_DEVICE_WAKE: |
169 | break; |
170 | |
171 | default: |
172 | aprint_debug_dev(dv, "unknown notify 0x%02X\n" , notify); |
173 | } |
174 | } |
175 | |
176 | MODULE(MODULE_CLASS_DRIVER, acpilid, "sysmon_power" ); |
177 | |
178 | #ifdef _MODULE |
179 | #include "ioconf.c" |
180 | #endif |
181 | |
182 | static int |
183 | acpilid_modcmd(modcmd_t cmd, void *aux) |
184 | { |
185 | int rv = 0; |
186 | |
187 | switch (cmd) { |
188 | |
189 | case MODULE_CMD_INIT: |
190 | |
191 | #ifdef _MODULE |
192 | rv = config_init_component(cfdriver_ioconf_acpilid, |
193 | cfattach_ioconf_acpilid, cfdata_ioconf_acpilid); |
194 | #endif |
195 | break; |
196 | |
197 | case MODULE_CMD_FINI: |
198 | |
199 | #ifdef _MODULE |
200 | rv = config_fini_component(cfdriver_ioconf_acpilid, |
201 | cfattach_ioconf_acpilid, cfdata_ioconf_acpilid); |
202 | #endif |
203 | break; |
204 | |
205 | default: |
206 | rv = ENOTTY; |
207 | } |
208 | |
209 | return rv; |
210 | } |
211 | |