Initial revision

1 files changed, 175 insertions, 0 deletions

diff --git a/hw/xfree86/common/xf86DPMS.c b/hw/xfree86/common/xf86DPMS.c
new file mode 100644
index 000000000..0de054ff3
--- /dev/null
+++ b/hw/xfree86/common/xf86DPMS.c
@@ -0,0 +1,175 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86DPMS.c,v 1.8 2003/02/13 02:41:09 dawes Exp $ */
+
+/*
+ * Copyright (c) 1997-1998 by The XFree86 Project, Inc.
+ */
+
+/*
+ * 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
+#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
+    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;
+    pDPMS->Set = set;
+    pDPMS->Flags = flags;
+    DPMSOpt = xf86FindOption(xf86Screens[pScreen->myNum]->options, "dpms");
+    if (DPMSOpt) {
+	if ((pDPMS->Enabled
+	    = xf86SetBoolOption(xf86Screens[pScreen->myNum]->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;
+
+    DPMSPowerLevel = level;
+
+    if (DPMSIndex < 0)
+	return;
+
+    /* For each screen, set the DPMS level */
+    for (i = 0; i < xf86NumScreens; i++) {
+	pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr;
+	if (pDPMS && pDPMS->Set && pDPMS->Enabled && xf86Screens[i]->vtSema) {
+	    xf86EnableAccess(xf86Screens[i]);
+	    pDPMS->Set(xf86Screens[i], level, 0);
+	}
+    }
+}
+
+
+/*
+ * DPMSSupported --
+ *	Return TRUE if any screen supports DPMS.
+ */
+Bool
+DPMSSupported(void)
+{
+    int i;
+    DPMSPtr pDPMS;
+
+    if (DPMSIndex < 0) {
+	return FALSE;
+    }
+
+    /* For each screen, check if DPMS is supported */
+    for (i = 0; i < xf86NumScreens; i++) {
+	pDPMS = (DPMSPtr)screenInfo.screens[i]->devPrivates[DPMSIndex].ptr;
+	if (pDPMS && pDPMS->Set)
+	    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 */