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