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diff --git a/src/aticlock.h b/src/aticlock.h
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+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/aticlock.h,v 1.8 2003/01/01 19:16:31 tsi Exp $ */
+/*
+ * Copyright 1997 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
+ *
+ * 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 Marc Aurele La France not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  Marc Aurele La France makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as-is" without express or implied warranty.
+ *
+ * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO
+ * EVENT SHALL MARC AURELE LA FRANCE 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.
+ */
+
+#ifndef ___ATICLOCK_H___
+#define ___ATICLOCK_H___ 1
+
+#include "atipriv.h"
+#include "atiproto.h"
+
+#include "xf86str.h"
+
+/*
+ * Definitions related to non-programmable clock generators.
+ */
+typedef enum
+{
+    ATI_CLOCK_NONE = 0,
+    ATI_CLOCK_VGA = 1,
+    ATI_CLOCK_CRYSTALS = 2,
+    ATI_CLOCK_18810,
+    ATI_CLOCK_18811_0,
+    ATI_CLOCK_18811_1,
+    ATI_CLOCK_2494AM,
+    ATI_CLOCK_MACH64A,
+    ATI_CLOCK_MACH64B,
+    ATI_CLOCK_MACH64C
+} ATIClockType;
+extern const char *ATIClockNames[];
+
+/*
+ * Definitions related to programmable clock generators.
+ */
+typedef enum
+{
+    ATI_CLOCK_UNKNOWN = -1,
+    ATI_CLOCK_FIXED = 0,        /* Further described by ATIClockType */
+    ATI_CLOCK_ICS2595,
+    ATI_CLOCK_STG1703,
+    ATI_CLOCK_CH8398,
+    ATI_CLOCK_INTERNAL,
+    ATI_CLOCK_ATT20C408,
+    ATI_CLOCK_IBMRGB514,
+    ATI_CLOCK_MAX               /* Must be last */
+} ATIProgrammableClockType;
+
+typedef struct
+{
+    CARD16 MinN, MaxN;          /* Feedback divider and ... */
+    CARD16 NAdjust;             /* ... its adjustment and ... */
+    CARD16 N1, N2;              /* ... its restrictions */
+    CARD16 MinM, MaxM;          /* Reference divider and ... */
+    CARD16 MAdjust;             /* ... its adjustment */
+    CARD16 NumD, *PostDividers; /* Post-dividers */
+    const char *ClockName;
+} ClockRec, *ClockPtr;
+extern ClockRec ATIClockDescriptors[];
+
+extern void ATIClockPreInit   FunctionPrototype((ScrnInfoPtr, ATIPtr, GDevPtr,
+                                                 ClockRangePtr));
+extern void ATIClockSave      FunctionPrototype((ScrnInfoPtr, ATIPtr,
+                                                 ATIHWPtr));
+extern Bool ATIClockCalculate FunctionPrototype((int, ATIPtr, ATIHWPtr,
+                                                 DisplayModePtr));
+extern void ATIClockSet       FunctionPrototype((ATIPtr, ATIHWPtr));
+
+#endif /* ___ATICLOCK_H___ */