xf86DPMS.c revision 05b261ec
1 2/* 3 * Copyright (c) 1997-2003 by The XFree86 Project, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Except as contained in this notice, the name of the copyright holder(s) 24 * and author(s) shall not be used in advertising or otherwise to promote 25 * the sale, use or other dealings in this Software without prior written 26 * authorization from the copyright holder(s) and author(s). 27 */ 28 29/* 30 * This file contains the DPMS functions required by the extension. 31 */ 32 33#ifdef HAVE_XORG_CONFIG_H 34#include <xorg-config.h> 35#endif 36 37#include <X11/X.h> 38#include "os.h" 39#include "globals.h" 40#include "xf86.h" 41#include "xf86Priv.h" 42#ifdef DPMSExtension 43#define DPMS_SERVER 44#include <X11/extensions/dpms.h> 45#include "dpmsproc.h" 46#endif 47 48 49#ifdef DPMSExtension 50static int DPMSGeneration = 0; 51static int DPMSIndex = -1; 52static Bool DPMSClose(int i, ScreenPtr pScreen); 53static int DPMSCount = 0; 54#endif 55 56 57_X_EXPORT Bool 58xf86DPMSInit(ScreenPtr pScreen, DPMSSetProcPtr set, int flags) 59{ 60#ifdef DPMSExtension 61 ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; 62 DPMSPtr pDPMS; 63 pointer DPMSOpt; 64 65 if (serverGeneration != DPMSGeneration) { 66 if ((DPMSIndex = AllocateScreenPrivateIndex()) < 0) 67 return FALSE; 68 DPMSGeneration = serverGeneration; 69 } 70 71 if (DPMSDisabledSwitch) 72 DPMSEnabled = FALSE; 73 if (!(pScreen->devPrivates[DPMSIndex].ptr = xcalloc(sizeof(DPMSRec), 1))) 74 return FALSE; 75 76 pDPMS = (DPMSPtr)pScreen->devPrivates[DPMSIndex].ptr; 77 pScrn->DPMSSet = set; 78 pDPMS->Flags = flags; 79 DPMSOpt = xf86FindOption(pScrn->options, "dpms"); 80 if (DPMSOpt) { 81 if ((pDPMS->Enabled 82 = xf86SetBoolOption(pScrn->options, "dpms", FALSE)) 83 && !DPMSDisabledSwitch) 84 DPMSEnabled = TRUE; 85 xf86MarkOptionUsed(DPMSOpt); 86 xf86DrvMsg(pScreen->myNum, X_CONFIG, "DPMS enabled\n"); 87 } else if (DPMSEnabledSwitch) { 88 if (!DPMSDisabledSwitch) 89 DPMSEnabled = TRUE; 90 pDPMS->Enabled = TRUE; 91 } 92 else { 93 pDPMS->Enabled = defaultDPMSEnabled; 94 } 95 pDPMS->CloseScreen = pScreen->CloseScreen; 96 pScreen->CloseScreen = DPMSClose; 97 DPMSCount++; 98 return TRUE; 99#else 100 return FALSE; 101#endif 102} 103 104 105#ifdef DPMSExtension 106 107static Bool 108DPMSClose(int i, ScreenPtr pScreen) 109{ 110 DPMSPtr pDPMS; 111 112 /* This shouldn't happen */ 113 if (DPMSIndex < 0) 114 return FALSE; 115 116 pDPMS = (DPMSPtr)pScreen->devPrivates[DPMSIndex].ptr; 117 118 /* This shouldn't happen */ 119 if (!pDPMS) 120 return FALSE; 121 122 pScreen->CloseScreen = pDPMS->CloseScreen; 123 124 /* 125 * Turn on DPMS when shutting down. If this function can be used 126 * depends on the order the driver wraps things. If this is called 127 * after the driver has shut down everything the driver will have 128 * to deal with this internally. 129 */ 130 if (xf86Screens[i]->vtSema && xf86Screens[i]->DPMSSet) { 131 xf86Screens[i]->DPMSSet(xf86Screens[i],DPMSModeOn,0); 132 } 133 134 xfree((pointer)pDPMS); 135 pScreen->devPrivates[DPMSIndex].ptr = NULL; 136 if (--DPMSCount == 0) 137 DPMSIndex = -1; 138 return pScreen->CloseScreen(i, pScreen); 139} 140 141 142/* 143 * DPMSSet -- 144 * Device dependent DPMS mode setting hook. This is called whenever 145 * the DPMS mode is to be changed. 146 */ 147_X_EXPORT void 148DPMSSet(int level) 149{ 150 int i; 151 DPMSPtr pDPMS; 152 ScrnInfoPtr pScrn; 153 154 DPMSPowerLevel = level; 155 156 if (DPMSIndex < 0) 157 return; 158 159 if (level != DPMSModeOn) 160 SaveScreens(SCREEN_SAVER_FORCER, ScreenSaverActive); 161 162 /* For each screen, set the DPMS level */ 163 for (i = 0; i < xf86NumScreens; i++) { 164 pScrn = xf86Screens[i]; 165 pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr; 166 if (pDPMS && pScrn->DPMSSet && pDPMS->Enabled && pScrn->vtSema) { 167 xf86EnableAccess(pScrn); 168 pScrn->DPMSSet(pScrn, level, 0); 169 } 170 } 171} 172 173 174/* 175 * DPMSSupported -- 176 * Return TRUE if any screen supports DPMS. 177 */ 178_X_EXPORT Bool 179DPMSSupported(void) 180{ 181 int i; 182 DPMSPtr pDPMS; 183 ScrnInfoPtr pScrn; 184 185 if (DPMSIndex < 0) { 186 return FALSE; 187 } 188 189 /* For each screen, check if DPMS is supported */ 190 for (i = 0; i < xf86NumScreens; i++) { 191 pScrn = xf86Screens[i]; 192 pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr; 193 if (pDPMS && pScrn->DPMSSet) 194 return TRUE; 195 } 196 return FALSE; 197} 198 199 200/* 201 * DPMSGet -- 202 * Device dependent DPMS mode getting hook. This returns the current 203 * DPMS mode, or -1 if DPMS is not supported. 204 * 205 * This should hook in to the appropriate driver-level function, which 206 * will be added to the ScrnInfoRec. 207 * 208 * NOTES: 209 * 1. the calling interface should be changed to specify which 210 * screen to check. 211 * 2. It isn't clear that this function is ever used or what it should 212 * return. 213 */ 214_X_EXPORT int 215DPMSGet(int *level) 216{ 217 return DPMSPowerLevel; 218} 219 220#endif /* DPMSExtension */ 221