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Diffstat (limited to 'xorg-server/hw/xfree86/ramdac/xf86RamDac.c')
-rw-r--r--xorg-server/hw/xfree86/ramdac/xf86RamDac.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/ramdac/xf86RamDac.c b/xorg-server/hw/xfree86/ramdac/xf86RamDac.c
new file mode 100644
index 000000000..1dd3daf1b
--- /dev/null
+++ b/xorg-server/hw/xfree86/ramdac/xf86RamDac.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright 1998 by Alan Hourihane, Wigan, England.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Alan Hourihane not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Alan Hourihane makes no representations
+ * about the suitability of this software for any purpose. It is provided
+ * "as is" without express or implied warranty.
+ *
+ * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Alan Hourihane, <alanh@fairlite.demon.co.uk>
+ *
+ * Generic RAMDAC access routines.
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include "xf86RamDacPriv.h"
+
+int RamDacHWPrivateIndex = -1;
+int RamDacScreenPrivateIndex = -1;
+
+RamDacRecPtr
+RamDacCreateInfoRec()
+{
+ RamDacRecPtr infoRec;
+
+ infoRec = xcalloc(1, sizeof(RamDacRec));
+
+ return infoRec;
+}
+
+RamDacHelperRecPtr
+RamDacHelperCreateInfoRec()
+{
+ RamDacHelperRecPtr infoRec;
+
+ infoRec = xcalloc(1, sizeof(RamDacHelperRec));
+
+ return infoRec;
+}
+
+void
+RamDacDestroyInfoRec(RamDacRecPtr infoRec)
+{
+ xfree(infoRec);
+}
+
+void
+RamDacHelperDestroyInfoRec(RamDacHelperRecPtr infoRec)
+{
+ xfree(infoRec);
+}
+
+Bool
+RamDacInit(ScrnInfoPtr pScrn, RamDacRecPtr ramdacPriv)
+{
+ RamDacScreenRecPtr ramdacScrPtr;
+
+ /*
+ * make sure the RamDacRec is allocated
+ */
+ if (!RamDacGetRec(pScrn))
+ return FALSE;
+ ramdacScrPtr =
+ ((RamDacScreenRecPtr) (pScrn)->privates[RamDacGetScreenIndex()].ptr);
+ ramdacScrPtr->RamDacRec = ramdacPriv;
+
+ return(TRUE);
+}
+
+void
+RamDacGetRecPrivate()
+{
+ if (RamDacHWPrivateIndex < 0)
+ RamDacHWPrivateIndex = xf86AllocateScrnInfoPrivateIndex();
+ if (RamDacScreenPrivateIndex < 0)
+ RamDacScreenPrivateIndex = xf86AllocateScrnInfoPrivateIndex();
+ return;
+}
+
+Bool
+RamDacGetRec(ScrnInfoPtr scrp)
+{
+ RamDacGetRecPrivate();
+ /*
+ * New privates are always set to NULL, so we can check if the allocation
+ * has already been done.
+ */
+ if (scrp->privates[RamDacHWPrivateIndex].ptr != NULL)
+ return TRUE;
+ if (scrp->privates[RamDacScreenPrivateIndex].ptr != NULL)
+ return TRUE;
+
+ scrp->privates[RamDacHWPrivateIndex].ptr =
+ xnfcalloc(sizeof(RamDacHWRec), 1);
+ scrp->privates[RamDacScreenPrivateIndex].ptr =
+ xnfcalloc(sizeof(RamDacScreenRec), 1);
+
+ return TRUE;
+}
+
+void
+RamDacFreeRec(ScrnInfoPtr pScrn)
+{
+ RamDacHWRecPtr ramdacHWPtr;
+ RamDacScreenRecPtr ramdacScrPtr;
+
+ if (RamDacHWPrivateIndex < 0)
+ return;
+
+ if (RamDacScreenPrivateIndex < 0)
+ return;
+
+ ramdacHWPtr = RAMDACHWPTR(pScrn);
+ ramdacScrPtr = ((RamDacScreenRecPtr)
+ (pScrn)->privates[RamDacGetScreenIndex()].ptr);
+
+ if (ramdacHWPtr)
+ xfree(ramdacHWPtr);
+ ramdacHWPtr = NULL;
+
+ if (ramdacScrPtr)
+ xfree(ramdacScrPtr);
+ ramdacScrPtr = NULL;
+}
+
+int
+RamDacGetHWIndex()
+{
+ return RamDacHWPrivateIndex;
+}
+
+int
+RamDacGetScreenIndex()
+{
+ return RamDacScreenPrivateIndex;
+}