761f937fde
problems on may systems which don't support APM standby and might not
be required as according to the APM specs the chips should receive
enough power to retain its state.
- Print out power state change requests to log file in all verbosity
levels.
- Don't change server state if no driver PM function is registered.
(Bugzilla #2279)
222 lines
6.4 KiB
C
222 lines
6.4 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86PM.c,v 3.9 2003/08/24 17:36:54 dawes Exp $ */
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/*
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* Copyright (c) 2000-2002 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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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 int
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eventName(pmEvent event, char **str)
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{
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switch(event) {
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case XF86_APM_SYS_STANDBY: *str="System Standby Request"; return 0;
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case XF86_APM_SYS_SUSPEND: *str="System Suspend Request"; return 0;
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case XF86_APM_CRITICAL_SUSPEND: *str="Critical Suspend"; return 0;
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case XF86_APM_USER_STANDBY: *str="User System Standby Request"; return 0;
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case XF86_APM_USER_SUSPEND: *str="User System Suspend Request"; return 0;
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case XF86_APM_STANDBY_RESUME: *str="System Standby Resume"; return 0;
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case XF86_APM_NORMAL_RESUME: *str="Normal Resume System"; return 0;
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case XF86_APM_CRITICAL_RESUME: *str="Critical Resume System"; return 0;
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case XF86_APM_LOW_BATTERY: *str="Battery Low"; return 3;
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case XF86_APM_POWER_STATUS_CHANGE: *str="Power Status Change";return 3;
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case XF86_APM_UPDATE_TIME: *str="Update Time";return 3;
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case XF86_APM_CAPABILITY_CHANGED: *str="Capability Changed"; return 3;
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case XF86_APM_STANDBY_FAILED: *str="Standby Request Failed"; return 0;
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case XF86_APM_SUSPEND_FAILED: *str="Suspend Request Failed"; return 0;
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default: *str="Unknown Event"; return 0;
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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, setup = 0;
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switch(event) {
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#if 0
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case XF86_APM_SYS_STANDBY:
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case XF86_APM_USER_STANDBY:
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#endif
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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_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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#if 0
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case XF86_APM_STANDBY_RESUME:
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#endif
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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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for (i = 0; i < xf86NumScreens; i++) {
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if (xf86Screens[i]->PMEvent) {
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if (!setup) xf86EnterServerState(SETUP);
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setup = 1;
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xf86EnableAccess(xf86Screens[i]);
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xf86Screens[i]->PMEvent(i,event,undo);
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}
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}
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if (setup) 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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char *str = NULL;
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int verb = eventName(events[i],&str);
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xf86MsgVerb(X_INFO,verb,"PM Event received: %s\n",str);
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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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