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, char **str)
45{
46    switch(event) {
47    case XF86_APM_SYS_STANDBY: *str="System Standby Request"; return 0;
48    case XF86_APM_SYS_SUSPEND: *str="System Suspend Request"; return 0;
49    case XF86_APM_CRITICAL_SUSPEND: *str="Critical Suspend"; return 0;
50    case XF86_APM_USER_STANDBY: *str="User System Standby Request"; return 0;
51    case XF86_APM_USER_SUSPEND: *str="User System Suspend Request"; return 0;
52    case XF86_APM_STANDBY_RESUME: *str="System Standby Resume"; return 0;
53    case XF86_APM_NORMAL_RESUME: *str="Normal Resume System"; return 0;
54    case XF86_APM_CRITICAL_RESUME: *str="Critical Resume System"; return 0;
55    case XF86_APM_LOW_BATTERY: *str="Battery Low"; return 3;
56    case XF86_APM_POWER_STATUS_CHANGE: *str="Power Status Change";return 3;
57    case XF86_APM_UPDATE_TIME: *str="Update Time";return 3;
58    case XF86_APM_CAPABILITY_CHANGED: *str="Capability Changed"; return 3;
59    case XF86_APM_STANDBY_FAILED: *str="Standby Request Failed"; return 0;
60    case XF86_APM_SUSPEND_FAILED: *str="Suspend Request Failed"; return 0;
61    default: *str="Unknown Event"; return 0;
62    }
63}
64
65static int sigio_blocked_for_suspend;
66
67static void
68suspend (pmEvent event, Bool undo)
69{
70    int i;
71    InputInfoPtr pInfo;
72
73    for (i = 0; i < xf86NumScreens; i++) {
74	if (xf86Screens[i]->EnableDisableFBAccess)
75	    (*xf86Screens[i]->EnableDisableFBAccess) (i, FALSE);
76    }
77    pInfo = xf86InputDevs;
78    while (pInfo) {
79	DisableDevice(pInfo->dev, TRUE);
80	pInfo = pInfo->next;
81    }
82    sigio_blocked_for_suspend = xf86BlockSIGIO();
83    for (i = 0; i < xf86NumScreens; i++) {
84	if (xf86Screens[i]->PMEvent)
85	    xf86Screens[i]->PMEvent(i,event,undo);
86	else {
87	    xf86Screens[i]->LeaveVT(i, 0);
88	    xf86Screens[i]->vtSema = FALSE;
89	}
90    }
91    xf86AccessLeave();
92
93}
94
95static void
96resume(pmEvent event, Bool undo)
97{
98    int i;
99    InputInfoPtr pInfo;
100
101    xf86AccessEnter();
102    for (i = 0; i < xf86NumScreens; i++) {
103	if (xf86Screens[i]->PMEvent)
104	    xf86Screens[i]->PMEvent(i,event,undo);
105	else {
106	    xf86Screens[i]->vtSema = TRUE;
107	    xf86Screens[i]->EnterVT(i, 0);
108	}
109    }
110    xf86UnblockSIGIO(sigio_blocked_for_suspend);
111    for (i = 0; i < xf86NumScreens; i++) {
112	if (xf86Screens[i]->EnableDisableFBAccess)
113	    (*xf86Screens[i]->EnableDisableFBAccess) (i, TRUE);
114    }
115    dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
116    pInfo = xf86InputDevs;
117    while (pInfo) {
118	EnableDevice(pInfo->dev, TRUE);
119	pInfo = pInfo->next;
120    }
121}
122
123static void
124DoApmEvent(pmEvent event, Bool undo)
125{
126    int i, was_blocked;
127
128    switch(event) {
129#if 0
130    case XF86_APM_SYS_STANDBY:
131    case XF86_APM_USER_STANDBY:
132#endif
133    case XF86_APM_SYS_SUSPEND:
134    case XF86_APM_CRITICAL_SUSPEND: /*do we want to delay a critical suspend?*/
135    case XF86_APM_USER_SUSPEND:
136	/* should we do this ? */
137	if (!undo && !suspended) {
138	    suspend(event,undo);
139	    suspended = TRUE;
140	} else if (undo && suspended) {
141	    resume(event,undo);
142	    suspended = FALSE;
143	}
144	break;
145#if 0
146    case XF86_APM_STANDBY_RESUME:
147#endif
148    case XF86_APM_NORMAL_RESUME:
149    case XF86_APM_CRITICAL_RESUME:
150	if (suspended) {
151	    resume(event,undo);
152	    suspended = FALSE;
153	}
154	break;
155    default:
156	was_blocked = xf86BlockSIGIO();
157	for (i = 0; i < xf86NumScreens; i++) {
158	    if (xf86Screens[i]->PMEvent) {
159		xf86Screens[i]->PMEvent(i,event,undo);
160	    }
161	}
162	xf86UnblockSIGIO(was_blocked);
163	break;
164    }
165}
166
167#define MAX_NO_EVENTS 8
168
169void
170xf86HandlePMEvents(int fd, pointer data)
171{
172    pmEvent events[MAX_NO_EVENTS];
173    int i,n;
174    Bool wait = FALSE;
175
176    if (!xf86PMGetEventFromOs)
177	return;
178
179    if ((n = xf86PMGetEventFromOs(fd,events,MAX_NO_EVENTS))) {
180	do {
181	    for (i = 0; i < n; i++) {
182		char *str = NULL;
183		int verb = eventName(events[i],&str);
184
185		xf86MsgVerb(X_INFO,verb,"PM Event received: %s\n",str);
186		DoApmEvent(events[i],FALSE);
187		switch (xf86PMConfirmEventToOs(fd,events[i])) {
188		case PM_WAIT:
189		    wait = TRUE;
190		    break;
191		case PM_CONTINUE:
192		    wait = FALSE;
193		    break;
194		case PM_FAILED:
195		    DoApmEvent(events[i],TRUE);
196		    wait = FALSE;
197		    break;
198		default:
199		    break;
200		}
201	    }
202	    if (wait)
203		n = xf86PMGetEventFromOs(fd,events,MAX_NO_EVENTS);
204	    else
205		break;
206	} while (1);
207    }
208}
209