xserver mesa git update 4 July 2011

1 files changed, 293 insertions, 293 deletions

diff --git a/xorg-server/hw/xfree86/modes/xf86cvt.c b/xorg-server/hw/xfree86/modes/xf86cvt.c
index 9992fa4c4..d5fecccb5 100644
--- a/xorg-server/hw/xfree86/modes/xf86cvt.c
+++ b/xorg-server/hw/xfree86/modes/xf86cvt.c
@@ -1,293 +1,293 @@
-/*

- * Copyright 2005-2006 Luc Verhaegen.

- *

- * 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:

- *

- * The above copyright notice and this permission notice shall be included in

- * all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

- * OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * The reason for having this function in a file of its own is

- * so that ../utils/cvt/cvt can link to it, and that xf86CVTMode

- * code is shared directly.

- */

-

-#ifdef HAVE_XORG_CONFIG_H

-#include <xorg-config.h>

-#else

-#ifdef HAVE_CONFIG_H

-#include <config.h>

-#endif

-#endif

-

-#include "xf86.h"

-#include "xf86Modes.h"

-

-#include <string.h>

-

-/*

- * Generate a CVT standard mode from HDisplay, VDisplay and VRefresh.

- *

- * These calculations are stolen from the CVT calculation spreadsheet written

- * by Graham Loveridge. He seems to be claiming no copyright and there seems to

- * be no license attached to this. He apparently just wants to see his name

- * mentioned.

- *

- * This file can be found at http://www.vesa.org/Public/CVT/CVTd6r1.xls

- *

- * Comments and structure corresponds to the comments and structure of the xls.

- * This should ease importing of future changes to the standard (not very

- * likely though).

- *

- * About margins; i'm sure that they are to be the bit between HDisplay and

- * HBlankStart, HBlankEnd and HTotal, VDisplay and VBlankStart, VBlankEnd and 

- * VTotal, where the overscan colour is shown. FB seems to call _all_ blanking

- * outside sync "margin" for some reason. Since we prefer seeing proper

- * blanking instead of the overscan colour, and since the Crtc* values will

- * probably get altered after us, we will disable margins altogether. With

- * these calculations, Margins will plainly expand H/VDisplay, and we don't

- * want that. -- libv

- *

- */

-DisplayModePtr

-xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,

-	    Bool Interlaced)

-{

-    DisplayModeRec  *Mode = xnfcalloc(1, sizeof(DisplayModeRec));

-

-    /* 1) top/bottom margin size (% of height) - default: 1.8 */

-#define CVT_MARGIN_PERCENTAGE 1.8    

-

-    /* 2) character cell horizontal granularity (pixels) - default 8 */

-#define CVT_H_GRANULARITY 8

-

-    /* 4) Minimum vertical porch (lines) - default 3 */

-#define CVT_MIN_V_PORCH 3

-

-    /* 4) Minimum number of vertical back porch lines - default 6 */

-#define CVT_MIN_V_BPORCH 6

-

-    /* Pixel Clock step (kHz) */

-#define CVT_CLOCK_STEP 250

-

-    Bool Margins = FALSE;

-    float  VFieldRate, HPeriod;

-    int  HDisplayRnd, HMargin;

-    int  VDisplayRnd, VMargin, VSync;

-    float  Interlace; /* Please rename this */

-

-    /* CVT default is 60.0Hz */

-    if (!VRefresh)

-        VRefresh = 60.0;

-

-    /* 1. Required field rate */

-    if (Interlaced)

-        VFieldRate = VRefresh * 2;

-    else

-        VFieldRate = VRefresh;

-

-    /* 2. Horizontal pixels */

-    HDisplayRnd = HDisplay - (HDisplay % CVT_H_GRANULARITY);

-

-    /* 3. Determine left and right borders */

-    if (Margins) {

-        /* right margin is actually exactly the same as left */

-        HMargin = (((float) HDisplayRnd) * CVT_MARGIN_PERCENTAGE / 100.0);

-        HMargin -= HMargin % CVT_H_GRANULARITY;

-    } else

-        HMargin = 0;

-

-    /* 4. Find total active pixels */

-    Mode->HDisplay = HDisplayRnd + 2*HMargin;

-

-    /* 5. Find number of lines per field */

-    if (Interlaced)

-        VDisplayRnd = VDisplay / 2;

-    else

-        VDisplayRnd = VDisplay;

-

-    /* 6. Find top and bottom margins */

-    /* nope. */

-    if (Margins)

-        /* top and bottom margins are equal again. */

-        VMargin = (((float) VDisplayRnd) * CVT_MARGIN_PERCENTAGE / 100.0);

-    else

-        VMargin = 0;

-

-    Mode->VDisplay = VDisplay + 2*VMargin;

-

-    /* 7. Interlace */

-    if (Interlaced)

-        Interlace = 0.5;

-    else

-        Interlace = 0.0;

-

-    /* Determine VSync Width from aspect ratio */

-    if (!(VDisplay % 3) && ((VDisplay * 4 / 3) == HDisplay))

-        VSync = 4;

-    else if (!(VDisplay % 9) && ((VDisplay * 16 / 9) == HDisplay))

-        VSync = 5;

-    else if (!(VDisplay % 10) && ((VDisplay * 16 / 10) == HDisplay))

-        VSync = 6;

-    else if (!(VDisplay % 4) && ((VDisplay * 5 / 4) == HDisplay))

-        VSync = 7;

-    else if (!(VDisplay % 9) && ((VDisplay * 15 / 9) == HDisplay))

-        VSync = 7;

-    else /* Custom */

-        VSync = 10;

-

-    if (!Reduced) { /* simplified GTF calculation */

-

-        /* 4) Minimum time of vertical sync + back porch interval (µs) 

-         * default 550.0 */

-#define CVT_MIN_VSYNC_BP 550.0

-

-        /* 3) Nominal HSync width (% of line period) - default 8 */

-#define CVT_HSYNC_PERCENTAGE 8

-

-        float  HBlankPercentage;

-        int  VSyncAndBackPorch, VBackPorch;

-        int  HBlank;

-

-        /* 8. Estimated Horizontal period */

-        HPeriod = ((float) (1000000.0 / VFieldRate - CVT_MIN_VSYNC_BP)) / 

-            (VDisplayRnd + 2 * VMargin + CVT_MIN_V_PORCH + Interlace);

-

-        /* 9. Find number of lines in sync + backporch */

-        if (((int)(CVT_MIN_VSYNC_BP / HPeriod) + 1) < (VSync + CVT_MIN_V_PORCH))

-            VSyncAndBackPorch = VSync + CVT_MIN_V_PORCH;

-        else

-            VSyncAndBackPorch = (int)(CVT_MIN_VSYNC_BP / HPeriod) + 1;

-

-        /* 10. Find number of lines in back porch */

-        VBackPorch = VSyncAndBackPorch - VSync;

-

-        /* 11. Find total number of lines in vertical field */

-        Mode->VTotal = VDisplayRnd + 2 * VMargin + VSyncAndBackPorch + Interlace

-            + CVT_MIN_V_PORCH;

-

-        /* 5) Definition of Horizontal blanking time limitation */

-        /* Gradient (%/kHz) - default 600 */

-#define CVT_M_FACTOR 600

-

-        /* Offset (%) - default 40 */

-#define CVT_C_FACTOR 40

-

-        /* Blanking time scaling factor - default 128 */

-#define CVT_K_FACTOR 128

-

-        /* Scaling factor weighting - default 20 */

-#define CVT_J_FACTOR 20

-

-#define CVT_M_PRIME CVT_M_FACTOR * CVT_K_FACTOR / 256

-#define CVT_C_PRIME (CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \

-        CVT_J_FACTOR

-

-        /* 12. Find ideal blanking duty cycle from formula */

-        HBlankPercentage = CVT_C_PRIME - CVT_M_PRIME * HPeriod/1000.0;

-

-        /* 13. Blanking time */

-        if (HBlankPercentage < 20)

-            HBlankPercentage = 20;

-

-        HBlank = Mode->HDisplay * HBlankPercentage/(100.0 - HBlankPercentage);

-        HBlank -= HBlank % (2*CVT_H_GRANULARITY);

-        

-        /* 14. Find total number of pixels in a line. */

-        Mode->HTotal = Mode->HDisplay + HBlank;

-

-        /* Fill in HSync values */

-        Mode->HSyncEnd = Mode->HDisplay + HBlank / 2;

-

-        Mode->HSyncStart = Mode->HSyncEnd - 

-            (Mode->HTotal * CVT_HSYNC_PERCENTAGE) / 100;

-        Mode->HSyncStart += CVT_H_GRANULARITY - 

-            Mode->HSyncStart % CVT_H_GRANULARITY;

-

-        /* Fill in VSync values */

-        Mode->VSyncStart = Mode->VDisplay + CVT_MIN_V_PORCH;

-        Mode->VSyncEnd = Mode->VSyncStart + VSync;

-

-    } else { /* Reduced blanking */

-        /* Minimum vertical blanking interval time (µs) - default 460 */

-#define CVT_RB_MIN_VBLANK 460.0

-

-        /* Fixed number of clocks for horizontal sync */

-#define CVT_RB_H_SYNC 32.0

-

-        /* Fixed number of clocks for horizontal blanking */

-#define CVT_RB_H_BLANK 160.0

-

-        /* Fixed number of lines for vertical front porch - default 3 */

-#define CVT_RB_VFPORCH 3

-

-        int  VBILines;

-

-        /* 8. Estimate Horizontal period. */

-        HPeriod = ((float) (1000000.0 / VFieldRate - CVT_RB_MIN_VBLANK)) / 

-            (VDisplayRnd + 2*VMargin);

-

-        /* 9. Find number of lines in vertical blanking */

-        VBILines = ((float) CVT_RB_MIN_VBLANK) / HPeriod + 1;

-

-        /* 10. Check if vertical blanking is sufficient */

-        if (VBILines < (CVT_RB_VFPORCH + VSync + CVT_MIN_V_BPORCH))

-            VBILines = CVT_RB_VFPORCH + VSync + CVT_MIN_V_BPORCH;

-        

-        /* 11. Find total number of lines in vertical field */

-        Mode->VTotal = VDisplayRnd + 2 * VMargin + Interlace + VBILines;

-

-        /* 12. Find total number of pixels in a line */

-        Mode->HTotal = Mode->HDisplay + CVT_RB_H_BLANK;

-

-        /* Fill in HSync values */

-        Mode->HSyncEnd = Mode->HDisplay + CVT_RB_H_BLANK / 2;

-        Mode->HSyncStart = Mode->HSyncEnd - CVT_RB_H_SYNC;

-

-        /* Fill in VSync values */

-        Mode->VSyncStart = Mode->VDisplay + CVT_RB_VFPORCH;

-        Mode->VSyncEnd = Mode->VSyncStart + VSync;

-    }

-

-    /* 15/13. Find pixel clock frequency (kHz for xf86) */

-    Mode->Clock = Mode->HTotal * 1000.0 / HPeriod;

-    Mode->Clock -= Mode->Clock % CVT_CLOCK_STEP;

-

-    /* 16/14. Find actual Horizontal Frequency (kHz) */

-    Mode->HSync = ((float) Mode->Clock) / ((float) Mode->HTotal);

-

-    /* 17/15. Find actual Field rate */

-    Mode->VRefresh = (1000.0 * ((float) Mode->Clock)) / 

-        ((float) (Mode->HTotal * Mode->VTotal));

-

-    /* 18/16. Find actual vertical frame frequency */

-    /* ignore - just set the mode flag for interlaced */

-    if (Interlaced)

-        Mode->VTotal *= 2;

-

-    XNFasprintf(&Mode->name, "%dx%d", HDisplay, VDisplay);

-

-    if (Reduced)

-        Mode->Flags |= V_PHSYNC | V_NVSYNC;

-    else

-        Mode->Flags |= V_NHSYNC | V_PVSYNC;

-

-    if (Interlaced)

-        Mode->Flags |= V_INTERLACE;

-

-    return Mode;

-}

+/*
+ * Copyright 2005-2006 Luc Verhaegen.
+ *
+ * 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:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The reason for having this function in a file of its own is
+ * so that ../utils/cvt/cvt can link to it, and that xf86CVTMode
+ * code is shared directly.
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#else
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#endif
+
+#include "xf86.h"
+#include "xf86Modes.h"
+
+#include <string.h>
+
+/*
+ * Generate a CVT standard mode from HDisplay, VDisplay and VRefresh.
+ *
+ * These calculations are stolen from the CVT calculation spreadsheet written
+ * by Graham Loveridge. He seems to be claiming no copyright and there seems to
+ * be no license attached to this. He apparently just wants to see his name
+ * mentioned.
+ *
+ * This file can be found at http://www.vesa.org/Public/CVT/CVTd6r1.xls
+ *
+ * Comments and structure corresponds to the comments and structure of the xls.
+ * This should ease importing of future changes to the standard (not very
+ * likely though).
+ *
+ * About margins; i'm sure that they are to be the bit between HDisplay and
+ * HBlankStart, HBlankEnd and HTotal, VDisplay and VBlankStart, VBlankEnd and 
+ * VTotal, where the overscan colour is shown. FB seems to call _all_ blanking
+ * outside sync "margin" for some reason. Since we prefer seeing proper
+ * blanking instead of the overscan colour, and since the Crtc* values will
+ * probably get altered after us, we will disable margins altogether. With
+ * these calculations, Margins will plainly expand H/VDisplay, and we don't
+ * want that. -- libv
+ *
+ */
+DisplayModePtr
+xf86CVTMode(int HDisplay, int VDisplay, float VRefresh, Bool Reduced,
+	    Bool Interlaced)
+{
+    DisplayModeRec  *Mode = xnfcalloc(1, sizeof(DisplayModeRec));
+
+    /* 1) top/bottom margin size (% of height) - default: 1.8 */
+#define CVT_MARGIN_PERCENTAGE 1.8    
+
+    /* 2) character cell horizontal granularity (pixels) - default 8 */
+#define CVT_H_GRANULARITY 8
+
+    /* 4) Minimum vertical porch (lines) - default 3 */
+#define CVT_MIN_V_PORCH 3
+
+    /* 4) Minimum number of vertical back porch lines - default 6 */
+#define CVT_MIN_V_BPORCH 6
+
+    /* Pixel Clock step (kHz) */
+#define CVT_CLOCK_STEP 250
+
+    Bool Margins = FALSE;
+    float  VFieldRate, HPeriod;
+    int  HDisplayRnd, HMargin;
+    int  VDisplayRnd, VMargin, VSync;
+    float  Interlace; /* Please rename this */
+
+    /* CVT default is 60.0Hz */
+    if (!VRefresh)
+        VRefresh = 60.0;
+
+    /* 1. Required field rate */
+    if (Interlaced)
+        VFieldRate = VRefresh * 2;
+    else
+        VFieldRate = VRefresh;
+
+    /* 2. Horizontal pixels */
+    HDisplayRnd = HDisplay - (HDisplay % CVT_H_GRANULARITY);
+
+    /* 3. Determine left and right borders */
+    if (Margins) {
+        /* right margin is actually exactly the same as left */
+        HMargin = (((float) HDisplayRnd) * CVT_MARGIN_PERCENTAGE / 100.0);
+        HMargin -= HMargin % CVT_H_GRANULARITY;
+    } else
+        HMargin = 0;
+
+    /* 4. Find total active pixels */
+    Mode->HDisplay = HDisplayRnd + 2*HMargin;
+
+    /* 5. Find number of lines per field */
+    if (Interlaced)
+        VDisplayRnd = VDisplay / 2;
+    else
+        VDisplayRnd = VDisplay;
+
+    /* 6. Find top and bottom margins */
+    /* nope. */
+    if (Margins)
+        /* top and bottom margins are equal again. */
+        VMargin = (((float) VDisplayRnd) * CVT_MARGIN_PERCENTAGE / 100.0);
+    else
+        VMargin = 0;
+
+    Mode->VDisplay = VDisplay + 2*VMargin;
+
+    /* 7. Interlace */
+    if (Interlaced)
+        Interlace = 0.5;
+    else
+        Interlace = 0.0;
+
+    /* Determine VSync Width from aspect ratio */
+    if (!(VDisplay % 3) && ((VDisplay * 4 / 3) == HDisplay))
+        VSync = 4;
+    else if (!(VDisplay % 9) && ((VDisplay * 16 / 9) == HDisplay))
+        VSync = 5;
+    else if (!(VDisplay % 10) && ((VDisplay * 16 / 10) == HDisplay))
+        VSync = 6;
+    else if (!(VDisplay % 4) && ((VDisplay * 5 / 4) == HDisplay))
+        VSync = 7;
+    else if (!(VDisplay % 9) && ((VDisplay * 15 / 9) == HDisplay))
+        VSync = 7;
+    else /* Custom */
+        VSync = 10;
+
+    if (!Reduced) { /* simplified GTF calculation */
+
+        /* 4) Minimum time of vertical sync + back porch interval (µs) 
+         * default 550.0 */
+#define CVT_MIN_VSYNC_BP 550.0
+
+        /* 3) Nominal HSync width (% of line period) - default 8 */
+#define CVT_HSYNC_PERCENTAGE 8
+
+        float  HBlankPercentage;
+        int  VSyncAndBackPorch, VBackPorch;
+        int  HBlank;
+
+        /* 8. Estimated Horizontal period */
+        HPeriod = ((float) (1000000.0 / VFieldRate - CVT_MIN_VSYNC_BP)) / 
+            (VDisplayRnd + 2 * VMargin + CVT_MIN_V_PORCH + Interlace);
+
+        /* 9. Find number of lines in sync + backporch */
+        if (((int)(CVT_MIN_VSYNC_BP / HPeriod) + 1) < (VSync + CVT_MIN_V_PORCH))
+            VSyncAndBackPorch = VSync + CVT_MIN_V_PORCH;
+        else
+            VSyncAndBackPorch = (int)(CVT_MIN_VSYNC_BP / HPeriod) + 1;
+
+        /* 10. Find number of lines in back porch */
+        VBackPorch = VSyncAndBackPorch - VSync;
+
+        /* 11. Find total number of lines in vertical field */
+        Mode->VTotal = VDisplayRnd + 2 * VMargin + VSyncAndBackPorch + Interlace
+            + CVT_MIN_V_PORCH;
+
+        /* 5) Definition of Horizontal blanking time limitation */
+        /* Gradient (%/kHz) - default 600 */
+#define CVT_M_FACTOR 600
+
+        /* Offset (%) - default 40 */
+#define CVT_C_FACTOR 40
+
+        /* Blanking time scaling factor - default 128 */
+#define CVT_K_FACTOR 128
+
+        /* Scaling factor weighting - default 20 */
+#define CVT_J_FACTOR 20
+
+#define CVT_M_PRIME CVT_M_FACTOR * CVT_K_FACTOR / 256
+#define CVT_C_PRIME (CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \
+        CVT_J_FACTOR
+
+        /* 12. Find ideal blanking duty cycle from formula */
+        HBlankPercentage = CVT_C_PRIME - CVT_M_PRIME * HPeriod/1000.0;
+
+        /* 13. Blanking time */
+        if (HBlankPercentage < 20)
+            HBlankPercentage = 20;
+
+        HBlank = Mode->HDisplay * HBlankPercentage/(100.0 - HBlankPercentage);
+        HBlank -= HBlank % (2*CVT_H_GRANULARITY);
+        
+        /* 14. Find total number of pixels in a line. */
+        Mode->HTotal = Mode->HDisplay + HBlank;
+
+        /* Fill in HSync values */
+        Mode->HSyncEnd = Mode->HDisplay + HBlank / 2;
+
+        Mode->HSyncStart = Mode->HSyncEnd - 
+            (Mode->HTotal * CVT_HSYNC_PERCENTAGE) / 100;
+        Mode->HSyncStart += CVT_H_GRANULARITY - 
+            Mode->HSyncStart % CVT_H_GRANULARITY;
+
+        /* Fill in VSync values */
+        Mode->VSyncStart = Mode->VDisplay + CVT_MIN_V_PORCH;
+        Mode->VSyncEnd = Mode->VSyncStart + VSync;
+
+    } else { /* Reduced blanking */
+        /* Minimum vertical blanking interval time (µs) - default 460 */
+#define CVT_RB_MIN_VBLANK 460.0
+
+        /* Fixed number of clocks for horizontal sync */
+#define CVT_RB_H_SYNC 32.0
+
+        /* Fixed number of clocks for horizontal blanking */
+#define CVT_RB_H_BLANK 160.0
+
+        /* Fixed number of lines for vertical front porch - default 3 */
+#define CVT_RB_VFPORCH 3
+
+        int  VBILines;
+
+        /* 8. Estimate Horizontal period. */
+        HPeriod = ((float) (1000000.0 / VFieldRate - CVT_RB_MIN_VBLANK)) / 
+            (VDisplayRnd + 2*VMargin);
+
+        /* 9. Find number of lines in vertical blanking */
+        VBILines = ((float) CVT_RB_MIN_VBLANK) / HPeriod + 1;
+
+        /* 10. Check if vertical blanking is sufficient */
+        if (VBILines < (CVT_RB_VFPORCH + VSync + CVT_MIN_V_BPORCH))
+            VBILines = CVT_RB_VFPORCH + VSync + CVT_MIN_V_BPORCH;
+        
+        /* 11. Find total number of lines in vertical field */
+        Mode->VTotal = VDisplayRnd + 2 * VMargin + Interlace + VBILines;
+
+        /* 12. Find total number of pixels in a line */
+        Mode->HTotal = Mode->HDisplay + CVT_RB_H_BLANK;
+
+        /* Fill in HSync values */
+        Mode->HSyncEnd = Mode->HDisplay + CVT_RB_H_BLANK / 2;
+        Mode->HSyncStart = Mode->HSyncEnd - CVT_RB_H_SYNC;
+
+        /* Fill in VSync values */
+        Mode->VSyncStart = Mode->VDisplay + CVT_RB_VFPORCH;
+        Mode->VSyncEnd = Mode->VSyncStart + VSync;
+    }
+
+    /* 15/13. Find pixel clock frequency (kHz for xf86) */
+    Mode->Clock = Mode->HTotal * 1000.0 / HPeriod;
+    Mode->Clock -= Mode->Clock % CVT_CLOCK_STEP;
+
+    /* 16/14. Find actual Horizontal Frequency (kHz) */
+    Mode->HSync = ((float) Mode->Clock) / ((float) Mode->HTotal);
+
+    /* 17/15. Find actual Field rate */
+    Mode->VRefresh = (1000.0 * ((float) Mode->Clock)) / 
+        ((float) (Mode->HTotal * Mode->VTotal));
+
+    /* 18/16. Find actual vertical frame frequency */
+    /* ignore - just set the mode flag for interlaced */
+    if (Interlaced)
+        Mode->VTotal *= 2;
+
+    XNFasprintf(&Mode->name, "%dx%d", HDisplay, VDisplay);
+
+    if (Reduced)
+        Mode->Flags |= V_PHSYNC | V_NVSYNC;
+    else
+        Mode->Flags |= V_NHSYNC | V_PVSYNC;
+
+    if (Interlaced)
+        Mode->Flags |= V_INTERLACE;
+
+    return Mode;
+}