xf86PM.c revision 35c4bbdf 
1/*
2 * Copyright (c) 2000-2002 by The XFree86 Project, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Except as contained in this notice, the name of the copyright holder(s)
23 * and author(s) shall not be used in advertising or otherwise to promote
24 * the sale, use or other dealings in this Software without prior written
25 * authorization from the copyright holder(s) and author(s).
26 */
27
28#ifdef HAVE_XORG_CONFIG_H
29#include <xorg-config.h>
30#endif
31
32#include <X11/X.h>
33#include "xf86.h"
34#include "xf86Priv.h"
35#include "xf86Xinput.h"
36#include "xf86_OSproc.h"
37
38int (*xf86PMGetEventFromOs) (int fd, pmEvent * events, int num) = NULL;
39pmWait (*xf86PMConfirmEventToOs) (int fd, pmEvent event) = NULL;
40
41static Bool suspended = FALSE;
42
43static int
44eventName(pmEvent event, const char **str)
45{
46    switch (event) {
47    case XF86_APM_SYS_STANDBY:
48        *str = "System Standby Request";
49        return 0;
50    case XF86_APM_SYS_SUSPEND:
51        *str = "System Suspend Request";
52        return 0;
53    case XF86_APM_CRITICAL_SUSPEND:
54        *str = "Critical Suspend";
55        return 0;
56    case XF86_APM_USER_STANDBY:
57        *str = "User System Standby Request";
58        return 0;
59    case XF86_APM_USER_SUSPEND:
60        *str = "User System Suspend Request";
61        return 0;
62    case XF86_APM_STANDBY_RESUME:
63        *str = "System Standby Resume";
64        return 0;
65    case XF86_APM_NORMAL_RESUME:
66        *str = "Normal Resume System";
67        return 0;
68    case XF86_APM_CRITICAL_RESUME:
69        *str = "Critical Resume System";
70        return 0;
71    case XF86_APM_LOW_BATTERY:
72        *str = "Battery Low";
73        return 3;
74    case XF86_APM_POWER_STATUS_CHANGE:
75        *str = "Power Status Change";
76        return 3;
77    case XF86_APM_UPDATE_TIME:
78        *str = "Update Time";
79        return 3;
80    case XF86_APM_CAPABILITY_CHANGED:
81        *str = "Capability Changed";
82        return 3;
83    case XF86_APM_STANDBY_FAILED:
84        *str = "Standby Request Failed";
85        return 0;
86    case XF86_APM_SUSPEND_FAILED:
87        *str = "Suspend Request Failed";
88        return 0;
89    default:
90        *str = "Unknown Event";
91        return 0;
92    }
93}
94
95static void
96suspend(pmEvent event, Bool undo)
97{
98    int i;
99    InputInfoPtr pInfo;
100
101    for (i = 0; i < xf86NumScreens; i++) {
102        if (xf86Screens[i]->EnableDisableFBAccess)
103            (*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], FALSE);
104    }
105    pInfo = xf86InputDevs;
106    while (pInfo) {
107        DisableDevice(pInfo->dev, TRUE);
108        pInfo = pInfo->next;
109    }
110    OsBlockSIGIO();
111    for (i = 0; i < xf86NumScreens; i++) {
112        if (xf86Screens[i]->PMEvent)
113            xf86Screens[i]->PMEvent(xf86Screens[i], event, undo);
114        else {
115            xf86Screens[i]->LeaveVT(xf86Screens[i]);
116            xf86Screens[i]->vtSema = FALSE;
117        }
118    }
119    xf86AccessLeave();
120
121}
122
123static void
124resume(pmEvent event, Bool undo)
125{
126    int i;
127    InputInfoPtr pInfo;
128
129    xf86AccessEnter();
130    for (i = 0; i < xf86NumScreens; i++) {
131        if (xf86Screens[i]->PMEvent)
132            xf86Screens[i]->PMEvent(xf86Screens[i], event, undo);
133        else {
134            xf86Screens[i]->vtSema = TRUE;
135            xf86Screens[i]->EnterVT(xf86Screens[i]);
136        }
137    }
138    OsReleaseSIGIO();
139    for (i = 0; i < xf86NumScreens; i++) {
140        if (xf86Screens[i]->EnableDisableFBAccess)
141            (*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE);
142    }
143    dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
144    pInfo = xf86InputDevs;
145    while (pInfo) {
146        EnableDevice(pInfo->dev, TRUE);
147        pInfo = pInfo->next;
148    }
149}
150
151static void
152DoApmEvent(pmEvent event, Bool undo)
153{
154    int i;
155
156    switch (event) {
157#if 0
158    case XF86_APM_SYS_STANDBY:
159    case XF86_APM_USER_STANDBY:
160#endif
161    case XF86_APM_SYS_SUSPEND:
162    case XF86_APM_CRITICAL_SUSPEND:    /*do we want to delay a critical suspend? */
163    case XF86_APM_USER_SUSPEND:
164        /* should we do this ? */
165        if (!undo && !suspended) {
166            suspend(event, undo);
167            suspended = TRUE;
168        }
169        else if (undo && suspended) {
170            resume(event, undo);
171            suspended = FALSE;
172        }
173        break;
174#if 0
175    case XF86_APM_STANDBY_RESUME:
176#endif
177    case XF86_APM_NORMAL_RESUME:
178    case XF86_APM_CRITICAL_RESUME:
179        if (suspended) {
180            resume(event, undo);
181            suspended = FALSE;
182        }
183        break;
184    default:
185        OsBlockSIGIO();
186        for (i = 0; i < xf86NumScreens; i++) {
187            if (xf86Screens[i]->PMEvent) {
188                xf86Screens[i]->PMEvent(xf86Screens[i], event, undo);
189            }
190        }
191        OsReleaseSIGIO();
192        break;
193    }
194}
195
196#define MAX_NO_EVENTS 8
197
198void
199xf86HandlePMEvents(int fd, void *data)
200{
201    pmEvent events[MAX_NO_EVENTS];
202    int i, n;
203    Bool wait = FALSE;
204
205    if (!xf86PMGetEventFromOs)
206        return;
207
208    if ((n = xf86PMGetEventFromOs(fd, events, MAX_NO_EVENTS))) {
209        do {
210            for (i = 0; i < n; i++) {
211                const char *str = NULL;
212                int verb = eventName(events[i], &str);
213
214                xf86MsgVerb(X_INFO, verb, "PM Event received: %s\n", str);
215                DoApmEvent(events[i], FALSE);
216                switch (xf86PMConfirmEventToOs(fd, events[i])) {
217                case PM_WAIT:
218                    wait = TRUE;
219                    break;
220                case PM_CONTINUE:
221                    wait = FALSE;
222                    break;
223                case PM_FAILED:
224                    DoApmEvent(events[i], TRUE);
225                    wait = FALSE;
226                    break;
227                default:
228                    break;
229                }
230            }
231            if (wait)
232                n = xf86PMGetEventFromOs(fd, events, MAX_NO_EVENTS);
233            else
234                break;
235        } while (1);
236    }
237}
238