/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86DPMS.c,v 1.12 2004/02/13 23:58:36 dawes Exp $ */ /* * Copyright (c) 1997-2003 by The XFree86 Project, Inc. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject * to the following conditions: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution, and in the same place and form as other copyright, * license and disclaimer information. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: "This product * includes software developed by The XFree86 Project, Inc * (http://www.xfree86.org/) and its contributors", in the same * place and form as other third-party acknowledgments. Alternately, * this acknowledgment may appear in the software itself, in the * same form and location as other such third-party acknowledgments. * * 4. Except as contained in this notice, the name of The XFree86 * Project, Inc shall not be used in advertising or otherwise to * promote the sale, use or other dealings in this Software without * prior written authorization from The XFree86 Project, Inc. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE XFREE86 PROJECT, INC OR ITS CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * This file contains the DPMS functions required by the extension. */ #include "X.h" #include "os.h" #include "globals.h" #include "xf86.h" #include "xf86Priv.h" #ifdef DPMSExtension #define DPMS_SERVER #include "extensions/dpms.h" #include "dpmsproc.h" #endif #ifdef DPMSExtension static int DPMSGeneration = 0; static int DPMSIndex = -1; static Bool DPMSClose(int i, ScreenPtr pScreen); static int DPMSCount = 0; #endif Bool xf86DPMSInit(ScreenPtr pScreen, DPMSSetProcPtr set, int flags) { #ifdef DPMSExtension ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; DPMSPtr pDPMS; pointer DPMSOpt; if (serverGeneration != DPMSGeneration) { if ((DPMSIndex = AllocateScreenPrivateIndex()) < 0) return FALSE; DPMSGeneration = serverGeneration; } if (DPMSDisabledSwitch) DPMSEnabled = FALSE; if (!(pScreen->devPrivates[DPMSIndex].ptr = xcalloc(sizeof(DPMSRec), 1))) return FALSE; pDPMS = (DPMSPtr)pScreen->devPrivates[DPMSIndex].ptr; pScrn->DPMSSet = set; pDPMS->Flags = flags; DPMSOpt = xf86FindOption(pScrn->options, "dpms"); if (DPMSOpt) { if ((pDPMS->Enabled = xf86SetBoolOption(pScrn->options, "dpms", FALSE)) && !DPMSDisabledSwitch) DPMSEnabled = TRUE; xf86MarkOptionUsed(DPMSOpt); xf86DrvMsg(pScreen->myNum, X_CONFIG, "DPMS enabled\n"); } else if (DPMSEnabledSwitch) { if (!DPMSDisabledSwitch) DPMSEnabled = TRUE; pDPMS->Enabled = TRUE; } else { pDPMS->Enabled = FALSE; } pDPMS->CloseScreen = pScreen->CloseScreen; pScreen->CloseScreen = DPMSClose; DPMSCount++; return TRUE; #else return FALSE; #endif } #ifdef DPMSExtension static Bool DPMSClose(int i, ScreenPtr pScreen) { DPMSPtr pDPMS; /* This shouldn't happen */ if (DPMSIndex < 0) return FALSE; pDPMS = (DPMSPtr)pScreen->devPrivates[DPMSIndex].ptr; /* This shouldn't happen */ if (!pDPMS) return FALSE; pScreen->CloseScreen = pDPMS->CloseScreen; xfree((pointer)pDPMS); pScreen->devPrivates[DPMSIndex].ptr = NULL; if (--DPMSCount == 0) DPMSIndex = -1; return pScreen->CloseScreen(i, pScreen); } /* * DPMSSet -- * Device dependent DPMS mode setting hook. This is called whenever * the DPMS mode is to be changed. */ void DPMSSet(int level) { int i; DPMSPtr pDPMS; ScrnInfoPtr pScrn; DPMSPowerLevel = level; if (DPMSIndex < 0) return; if (level != DPMSModeOn) SaveScreens(SCREEN_SAVER_FORCER, ScreenSaverActive); /* For each screen, set the DPMS level */ for (i = 0; i < xf86NumScreens; i++) { pScrn = xf86Screens[i]; pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr; if (pDPMS && pScrn->DPMSSet && pDPMS->Enabled && pScrn->vtSema) { xf86EnableAccess(pScrn); pScrn->DPMSSet(pScrn, level, 0); } } } /* * DPMSSupported -- * Return TRUE if any screen supports DPMS. */ Bool DPMSSupported(void) { int i; DPMSPtr pDPMS; ScrnInfoPtr pScrn; if (DPMSIndex < 0) { return FALSE; } /* For each screen, check if DPMS is supported */ for (i = 0; i < xf86NumScreens; i++) { pScrn = xf86Screens[i]; pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr; if (pDPMS && pScrn->DPMSSet) return TRUE; } return FALSE; } /* * DPMSGet -- * Device dependent DPMS mode getting hook. This returns the current * DPMS mode, or -1 if DPMS is not supported. * * This should hook in to the appropriate driver-level function, which * will be added to the ScrnInfoRec. * * NOTES: * 1. the calling interface should be changed to specify which * screen to check. * 2. It isn't clear that this function is ever used or what it should * return. */ int DPMSGet(int *level) { return DPMSPowerLevel; } #endif /* DPMSExtension */