189 lines
4.8 KiB
C
189 lines
4.8 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86PM.c,v 3.8 2002/09/29 23:54:34 keithp Exp $ */
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#include "X.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86Xinput.h"
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int (*xf86PMGetEventFromOs)(int fd,pmEvent *events,int num) = NULL;
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pmWait (*xf86PMConfirmEventToOs)(int fd,pmEvent event) = NULL;
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static Bool suspended = FALSE;
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static char *
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eventName(pmEvent event)
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{
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switch(event) {
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case XF86_APM_SYS_STANDBY: return ("System Standby Request");
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case XF86_APM_SYS_SUSPEND: return ("System Suspend Request");
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case XF86_APM_CRITICAL_SUSPEND: return ("Critical Suspend");
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case XF86_APM_USER_STANDBY: return ("User System Standby Request");
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case XF86_APM_USER_SUSPEND: return ("User System Suspend Request");
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case XF86_APM_STANDBY_RESUME: return ("System Standby Resume");
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case XF86_APM_NORMAL_RESUME: return ("Normal Resume System");
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case XF86_APM_CRITICAL_RESUME: return ("Critical Resume System");
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case XF86_APM_LOW_BATTERY: return ("Battery Low");
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case XF86_APM_POWER_STATUS_CHANGE: return ("Power Status Change");
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case XF86_APM_UPDATE_TIME: return ("Update Time");
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case XF86_APM_CAPABILITY_CHANGED: return ("Capability Changed");
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case XF86_APM_STANDBY_FAILED: return ("Standby Request Failed");
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case XF86_APM_SUSPEND_FAILED: return ("Suspend Request Failed");
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default: return ("Unknown Event");
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}
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}
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static void
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suspend (pmEvent event, Bool undo)
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{
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int i;
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InputInfoPtr pInfo;
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xf86inSuspend = TRUE;
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for (i = 0; i < xf86NumScreens; i++) {
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xf86EnableAccess(xf86Screens[i]);
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if (xf86Screens[i]->EnableDisableFBAccess)
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(*xf86Screens[i]->EnableDisableFBAccess) (i, FALSE);
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}
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#if !defined(__EMX__)
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pInfo = xf86InputDevs;
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while (pInfo) {
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DisableDevice(pInfo->dev);
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pInfo = pInfo->next;
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}
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#endif
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xf86EnterServerState(SETUP);
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for (i = 0; i < xf86NumScreens; i++) {
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xf86EnableAccess(xf86Screens[i]);
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if (xf86Screens[i]->PMEvent)
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xf86Screens[i]->PMEvent(i,event,undo);
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else {
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xf86Screens[i]->LeaveVT(i, 0);
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xf86Screens[i]->vtSema = FALSE;
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}
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}
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xf86AccessLeave();
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xf86AccessLeaveState();
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}
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static void
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resume(pmEvent event, Bool undo)
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{
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int i;
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InputInfoPtr pInfo;
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xf86AccessEnter();
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xf86EnterServerState(SETUP);
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for (i = 0; i < xf86NumScreens; i++) {
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xf86EnableAccess(xf86Screens[i]);
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if (xf86Screens[i]->PMEvent)
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xf86Screens[i]->PMEvent(i,event,undo);
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else {
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xf86Screens[i]->vtSema = TRUE;
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xf86Screens[i]->EnterVT(i, 0);
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}
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}
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xf86EnterServerState(OPERATING);
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for (i = 0; i < xf86NumScreens; i++) {
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xf86EnableAccess(xf86Screens[i]);
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if (xf86Screens[i]->EnableDisableFBAccess)
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(*xf86Screens[i]->EnableDisableFBAccess) (i, TRUE);
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}
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SaveScreens(SCREEN_SAVER_FORCER, ScreenSaverReset);
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#if !defined(__EMX__)
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pInfo = xf86InputDevs;
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while (pInfo) {
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EnableDevice(pInfo->dev);
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pInfo = pInfo->next;
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}
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#endif
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xf86inSuspend = FALSE;
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}
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static void
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DoApmEvent(pmEvent event, Bool undo)
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{
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/*
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* we leave that as a global function for now. I don't know if
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* this might cause problems in the future. It is a global server
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* variable therefore it needs to be in a server info structure
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*/
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int i;
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switch(event) {
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case XF86_APM_SYS_STANDBY:
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case XF86_APM_SYS_SUSPEND:
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case XF86_APM_CRITICAL_SUSPEND: /*do we want to delay a critical suspend?*/
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case XF86_APM_USER_STANDBY:
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case XF86_APM_USER_SUSPEND:
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/* should we do this ? */
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if (!undo && !suspended) {
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suspend(event,undo);
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suspended = TRUE;
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} else if (undo && suspended) {
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resume(event,undo);
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suspended = FALSE;
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}
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break;
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case XF86_APM_STANDBY_RESUME:
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case XF86_APM_NORMAL_RESUME:
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case XF86_APM_CRITICAL_RESUME:
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if (suspended) {
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resume(event,undo);
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suspended = FALSE;
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}
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break;
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default:
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xf86EnterServerState(SETUP);
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for (i = 0; i < xf86NumScreens; i++) {
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xf86EnableAccess(xf86Screens[i]);
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if (xf86Screens[i]->PMEvent)
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xf86Screens[i]->PMEvent(i,event,undo);
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}
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xf86EnterServerState(OPERATING);
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break;
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}
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}
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#define MAX_NO_EVENTS 8
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void
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xf86HandlePMEvents(int fd, pointer data)
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{
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pmEvent events[MAX_NO_EVENTS];
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int i,n;
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Bool wait = FALSE;
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if (!xf86PMGetEventFromOs)
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return;
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if ((n = xf86PMGetEventFromOs(fd,events,MAX_NO_EVENTS))) {
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do {
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for (i = 0; i < n; i++) {
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xf86MsgVerb(X_INFO,3,"PM Event received: %s\n",
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eventName(events[i]));
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DoApmEvent(events[i],FALSE);
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switch (xf86PMConfirmEventToOs(fd,events[i])) {
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case PM_WAIT:
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wait = TRUE;
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break;
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case PM_CONTINUE:
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wait = FALSE;
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break;
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case PM_FAILED:
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DoApmEvent(events[i],TRUE);
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wait = FALSE;
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break;
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default:
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break;
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}
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}
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if (wait)
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n = xf86PMGetEventFromOs(fd,events,MAX_NO_EVENTS);
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else
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break;
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} while (1);
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}
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}
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