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2123 lines
72 KiB
C
2123 lines
72 KiB
C
/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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/*
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* LCM() and scanLineWidth() are:
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*
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* Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of Marc Aurele La France not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Marc Aurele La France makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as-is" without express or implied warranty.
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*
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* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
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* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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* Copyright 1990,91,92,93 by Thomas Roell, Germany.
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* Copyright 1991,92,93 by SGCS (Snitily Graphics Consulting Services), USA.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation, and that the name of Thomas Roell nor
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* SGCS be used in advertising or publicity pertaining to distribution
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* of the software without specific, written prior permission.
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* Thomas Roell nor SGCS makes no representations about the suitability
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* of this software for any purpose. It is provided "as is" without
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* express or implied warranty.
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*
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* THOMAS ROELL AND SGCS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THOMAS ROELL OR SGCS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* Authors: Dirk Hohndel <hohndel@XFree86.Org>
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* David Dawes <dawes@XFree86.Org>
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* Marc La France <tsi@XFree86.Org>
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* ... and others
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*
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* This file includes helper functions for mode related things.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <X11/X.h>
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#include "xf86Modes.h"
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#include "xf86Crtc.h"
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#include "os.h"
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#include "servermd.h"
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#include "globals.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "edid.h"
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static void
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printModeRejectMessage(int index, DisplayModePtr p, int status)
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{
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const char *type;
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if (p->type & M_T_BUILTIN)
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type = "built-in ";
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else if (p->type & M_T_DEFAULT)
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type = "default ";
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else if (p->type & M_T_DRIVER)
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type = "driver ";
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else
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type = "";
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xf86DrvMsg(index, X_INFO, "Not using %smode \"%s\" (%s)\n", type, p->name,
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xf86ModeStatusToString(status));
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}
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/*
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* Find closest clock to given frequency (in kHz). This assumes the
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* number of clocks is greater than zero.
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*/
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static int
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xf86GetNearestClock(ScrnInfoPtr scrp, int freq, Bool allowDiv2,
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int DivFactor, int MulFactor, int *divider)
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{
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int nearestClock = 0, nearestDiv = 1;
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int minimumGap = abs(freq - scrp->clock[0]);
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int i, j, k, gap;
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if (allowDiv2)
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k = 2;
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else
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k = 1;
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/* Must set this here in case the best match is scrp->clock[0] */
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if (divider != NULL)
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*divider = 0;
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for (i = 0; i < scrp->numClocks; i++) {
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for (j = 1; j <= k; j++) {
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gap = abs((freq * j) - ((scrp->clock[i] * DivFactor) / MulFactor));
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if ((gap < minimumGap) || ((gap == minimumGap) && (j < nearestDiv))) {
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minimumGap = gap;
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nearestClock = i;
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nearestDiv = j;
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if (divider != NULL)
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*divider = (j - 1) * V_CLKDIV2;
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}
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}
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}
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return nearestClock;
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}
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/*
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* xf86ModeStatusToString
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*
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* Convert a ModeStatus value to a printable message
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*/
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const char *
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xf86ModeStatusToString(ModeStatus status)
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{
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switch (status) {
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case MODE_OK:
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return "Mode OK";
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case MODE_HSYNC:
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return "hsync out of range";
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case MODE_VSYNC:
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return "vrefresh out of range";
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case MODE_H_ILLEGAL:
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return "illegal horizontal timings";
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case MODE_V_ILLEGAL:
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return "illegal vertical timings";
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case MODE_BAD_WIDTH:
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return "width requires unsupported line pitch";
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case MODE_NOMODE:
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return "no mode of this name";
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case MODE_NO_INTERLACE:
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return "interlace mode not supported";
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case MODE_NO_DBLESCAN:
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return "doublescan mode not supported";
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case MODE_NO_VSCAN:
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return "multiscan mode not supported";
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case MODE_MEM:
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return "insufficient memory for mode";
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case MODE_VIRTUAL_X:
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return "width too large for virtual size";
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case MODE_VIRTUAL_Y:
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return "height too large for virtual size";
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case MODE_MEM_VIRT:
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return "insufficient memory given virtual size";
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case MODE_NOCLOCK:
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return "no clock available for mode";
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case MODE_CLOCK_HIGH:
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return "mode clock too high";
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case MODE_CLOCK_LOW:
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return "mode clock too low";
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case MODE_CLOCK_RANGE:
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return "bad mode clock/interlace/doublescan";
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case MODE_BAD_HVALUE:
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return "horizontal timing out of range";
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case MODE_BAD_VVALUE:
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return "vertical timing out of range";
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case MODE_BAD_VSCAN:
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return "VScan value out of range";
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case MODE_HSYNC_NARROW:
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return "horizontal sync too narrow";
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case MODE_HSYNC_WIDE:
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return "horizontal sync too wide";
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case MODE_HBLANK_NARROW:
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return "horizontal blanking too narrow";
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case MODE_HBLANK_WIDE:
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return "horizontal blanking too wide";
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case MODE_VSYNC_NARROW:
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return "vertical sync too narrow";
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case MODE_VSYNC_WIDE:
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return "vertical sync too wide";
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case MODE_VBLANK_NARROW:
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return "vertical blanking too narrow";
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case MODE_VBLANK_WIDE:
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return "vertical blanking too wide";
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case MODE_PANEL:
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return "exceeds panel dimensions";
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case MODE_INTERLACE_WIDTH:
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return "width too large for interlaced mode";
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case MODE_ONE_WIDTH:
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return "all modes must have the same width";
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case MODE_ONE_HEIGHT:
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return "all modes must have the same height";
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case MODE_ONE_SIZE:
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return "all modes must have the same resolution";
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case MODE_NO_REDUCED:
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return "monitor doesn't support reduced blanking";
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case MODE_BANDWIDTH:
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return "mode requires too much memory bandwidth";
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case MODE_BAD:
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return "unknown reason";
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case MODE_ERROR:
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return "internal error";
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default:
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return "unknown";
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}
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}
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/*
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* xf86ShowClockRanges() -- Print the clock ranges allowed
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* and the clock values scaled by ClockMulFactor and ClockDivFactor
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*/
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void
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xf86ShowClockRanges(ScrnInfoPtr scrp, ClockRangePtr clockRanges)
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{
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ClockRangePtr cp;
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int MulFactor = 1;
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int DivFactor = 1;
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int i, j;
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int scaledClock;
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for (cp = clockRanges; cp != NULL; cp = cp->next) {
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DivFactor = max(1, cp->ClockDivFactor);
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MulFactor = max(1, cp->ClockMulFactor);
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if (scrp->progClock) {
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if (cp->minClock) {
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if (cp->maxClock) {
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xf86DrvMsg(scrp->scrnIndex, X_INFO,
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"Clock range: %6.2f to %6.2f MHz\n",
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(double) cp->minClock / 1000.0,
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(double) cp->maxClock / 1000.0);
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}
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else {
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xf86DrvMsg(scrp->scrnIndex, X_INFO,
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"Minimum clock: %6.2f MHz\n",
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(double) cp->minClock / 1000.0);
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}
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}
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else {
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if (cp->maxClock) {
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xf86DrvMsg(scrp->scrnIndex, X_INFO,
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"Maximum clock: %6.2f MHz\n",
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(double) cp->maxClock / 1000.0);
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}
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}
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}
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else if (DivFactor > 1 || MulFactor > 1) {
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j = 0;
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for (i = 0; i < scrp->numClocks; i++) {
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scaledClock = (scrp->clock[i] * DivFactor) / MulFactor;
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if (scaledClock >= cp->minClock && scaledClock <= cp->maxClock) {
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if ((j % 8) == 0) {
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if (j > 0)
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xf86ErrorF("\n");
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xf86DrvMsg(scrp->scrnIndex, X_INFO, "scaled clocks:");
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}
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xf86ErrorF(" %6.2f", (double) scaledClock / 1000.0);
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j++;
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}
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}
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xf86ErrorF("\n");
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}
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}
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}
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static Bool
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modeInClockRange(ClockRangePtr cp, DisplayModePtr p)
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{
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return ((p->Clock >= cp->minClock) &&
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(p->Clock <= cp->maxClock) &&
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(cp->interlaceAllowed || !(p->Flags & V_INTERLACE)) &&
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(cp->doubleScanAllowed ||
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((p->VScan <= 1) && !(p->Flags & V_DBLSCAN))));
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}
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/*
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* xf86FindClockRangeForMode() [... like the name says ...]
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*/
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static ClockRangePtr
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xf86FindClockRangeForMode(ClockRangePtr clockRanges, DisplayModePtr p)
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{
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ClockRangePtr cp;
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for (cp = clockRanges;; cp = cp->next)
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if (!cp || modeInClockRange(cp, p))
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return cp;
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}
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/*
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* xf86HandleBuiltinMode() - handles built-in modes
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*/
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static ModeStatus
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xf86HandleBuiltinMode(ScrnInfoPtr scrp,
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DisplayModePtr p,
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DisplayModePtr modep,
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ClockRangePtr clockRanges, Bool allowDiv2)
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{
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ClockRangePtr cp;
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int extraFlags = 0;
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int MulFactor = 1;
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int DivFactor = 1;
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int clockIndex;
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/* Reject previously rejected modes */
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if (p->status != MODE_OK)
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return p->status;
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/* Reject previously considered modes */
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if (p->prev)
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return MODE_NOMODE;
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if ((p->type & M_T_CLOCK_C) == M_T_CLOCK_C) {
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/* Check clock is in range */
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cp = xf86FindClockRangeForMode(clockRanges, p);
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if (cp == NULL) {
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modep->type = p->type;
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p->status = MODE_CLOCK_RANGE;
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return MODE_CLOCK_RANGE;
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}
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DivFactor = cp->ClockDivFactor;
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MulFactor = cp->ClockMulFactor;
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if (!scrp->progClock) {
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clockIndex = xf86GetNearestClock(scrp, p->Clock, allowDiv2,
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cp->ClockDivFactor,
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cp->ClockMulFactor, &extraFlags);
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modep->Clock = (scrp->clock[clockIndex] * DivFactor)
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/ MulFactor;
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modep->ClockIndex = clockIndex;
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modep->SynthClock = scrp->clock[clockIndex];
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if (extraFlags & V_CLKDIV2) {
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modep->Clock /= 2;
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modep->SynthClock /= 2;
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}
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}
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else {
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modep->Clock = p->Clock;
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modep->ClockIndex = -1;
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modep->SynthClock = (modep->Clock * MulFactor)
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/ DivFactor;
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}
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modep->PrivFlags = cp->PrivFlags;
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}
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else {
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if (!scrp->progClock) {
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modep->Clock = p->Clock;
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modep->ClockIndex = p->ClockIndex;
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modep->SynthClock = p->SynthClock;
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}
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else {
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modep->Clock = p->Clock;
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modep->ClockIndex = -1;
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modep->SynthClock = p->SynthClock;
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}
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modep->PrivFlags = p->PrivFlags;
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}
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modep->type = p->type;
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modep->HDisplay = p->HDisplay;
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modep->HSyncStart = p->HSyncStart;
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modep->HSyncEnd = p->HSyncEnd;
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modep->HTotal = p->HTotal;
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modep->HSkew = p->HSkew;
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modep->VDisplay = p->VDisplay;
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modep->VSyncStart = p->VSyncStart;
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modep->VSyncEnd = p->VSyncEnd;
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modep->VTotal = p->VTotal;
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modep->VScan = p->VScan;
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modep->Flags = p->Flags | extraFlags;
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modep->CrtcHDisplay = p->CrtcHDisplay;
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modep->CrtcHBlankStart = p->CrtcHBlankStart;
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modep->CrtcHSyncStart = p->CrtcHSyncStart;
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modep->CrtcHSyncEnd = p->CrtcHSyncEnd;
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modep->CrtcHBlankEnd = p->CrtcHBlankEnd;
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modep->CrtcHTotal = p->CrtcHTotal;
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modep->CrtcHSkew = p->CrtcHSkew;
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modep->CrtcVDisplay = p->CrtcVDisplay;
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modep->CrtcVBlankStart = p->CrtcVBlankStart;
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modep->CrtcVSyncStart = p->CrtcVSyncStart;
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modep->CrtcVSyncEnd = p->CrtcVSyncEnd;
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modep->CrtcVBlankEnd = p->CrtcVBlankEnd;
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modep->CrtcVTotal = p->CrtcVTotal;
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modep->CrtcHAdjusted = p->CrtcHAdjusted;
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modep->CrtcVAdjusted = p->CrtcVAdjusted;
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modep->HSync = p->HSync;
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modep->VRefresh = p->VRefresh;
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modep->Private = p->Private;
|
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modep->PrivSize = p->PrivSize;
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p->prev = modep;
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return MODE_OK;
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}
|
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|
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/*
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* xf86LookupMode
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*
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* This function returns a mode from the given list which matches the
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* given name. When multiple modes with the same name are available,
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* the method of picking the matching mode is determined by the
|
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* strategy selected.
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|
*
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* This function takes the following parameters:
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* scrp ScrnInfoPtr
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* modep pointer to the returned mode, which must have the name
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* field filled in.
|
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* clockRanges a list of clock ranges. This is optional when all the
|
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* modes are built-in modes.
|
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* strategy how to decide which mode to use from multiple modes with
|
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* the same name
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*
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* In addition, the following fields from the ScrnInfoRec are used:
|
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* modePool the list of monitor modes compatible with the driver
|
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* clocks a list of discrete clocks
|
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* numClocks number of discrete clocks
|
|
* progClock clock is programmable
|
|
*
|
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* If a mode was found, its values are filled in to the area pointed to
|
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* by modep, If a mode was not found the return value indicates the
|
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* reason.
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*/
|
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|
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static ModeStatus
|
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xf86LookupMode(ScrnInfoPtr scrp, DisplayModePtr modep,
|
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ClockRangePtr clockRanges, LookupModeFlags strategy)
|
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{
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DisplayModePtr p, bestMode = NULL;
|
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ClockRangePtr cp;
|
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int i, k, gap, minimumGap = CLOCK_TOLERANCE + 1;
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double refresh, bestRefresh = 0.0;
|
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Bool found = FALSE;
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int extraFlags = 0;
|
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int clockIndex = -1;
|
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int MulFactor = 1;
|
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int DivFactor = 1;
|
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int ModePrivFlags = 0;
|
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ModeStatus status = MODE_NOMODE;
|
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Bool allowDiv2 = (strategy & LOOKUP_CLKDIV2) != 0;
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int n;
|
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|
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const int types[] = {
|
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M_T_BUILTIN | M_T_PREFERRED,
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M_T_BUILTIN,
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M_T_USERDEF | M_T_PREFERRED,
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M_T_USERDEF,
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M_T_DRIVER | M_T_PREFERRED,
|
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M_T_DRIVER,
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0
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};
|
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const int ntypes = ARRAY_SIZE(types);
|
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|
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strategy &= ~(LOOKUP_CLKDIV2 | LOOKUP_OPTIONAL_TOLERANCES);
|
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|
|
/* Some sanity checking */
|
|
if (scrp == NULL || scrp->modePool == NULL ||
|
|
(!scrp->progClock && scrp->numClocks == 0)) {
|
|
ErrorF("xf86LookupMode: called with invalid scrnInfoRec\n");
|
|
return MODE_ERROR;
|
|
}
|
|
if (modep == NULL || modep->name == NULL) {
|
|
ErrorF("xf86LookupMode: called with invalid modep\n");
|
|
return MODE_ERROR;
|
|
}
|
|
for (cp = clockRanges; cp != NULL; cp = cp->next) {
|
|
/* DivFactor and MulFactor must be > 0 */
|
|
cp->ClockDivFactor = max(1, cp->ClockDivFactor);
|
|
cp->ClockMulFactor = max(1, cp->ClockMulFactor);
|
|
}
|
|
|
|
/* Scan the mode pool for matching names */
|
|
for (n = 0; n < ntypes; n++) {
|
|
int type = types[n];
|
|
|
|
for (p = scrp->modePool; p != NULL; p = p->next) {
|
|
|
|
/* scan through the modes in the sort order above */
|
|
if ((p->type & type) != type)
|
|
continue;
|
|
|
|
if (strcmp(p->name, modep->name) == 0) {
|
|
|
|
/* Skip over previously rejected modes */
|
|
if (p->status != MODE_OK) {
|
|
if (!found)
|
|
status = p->status;
|
|
continue;
|
|
}
|
|
|
|
/* Skip over previously considered modes */
|
|
if (p->prev)
|
|
continue;
|
|
|
|
if (p->type & M_T_BUILTIN) {
|
|
return xf86HandleBuiltinMode(scrp, p, modep, clockRanges,
|
|
allowDiv2);
|
|
}
|
|
|
|
/* Check clock is in range */
|
|
cp = xf86FindClockRangeForMode(clockRanges, p);
|
|
if (cp == NULL) {
|
|
/*
|
|
* XXX Could do more here to provide a more detailed
|
|
* reason for not finding a mode.
|
|
*/
|
|
p->status = MODE_CLOCK_RANGE;
|
|
if (!found)
|
|
status = MODE_CLOCK_RANGE;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If programmable clock and strategy is not
|
|
* LOOKUP_BEST_REFRESH, the required mode has been found,
|
|
* otherwise record the refresh and continue looking.
|
|
*/
|
|
if (scrp->progClock) {
|
|
found = TRUE;
|
|
if (strategy != LOOKUP_BEST_REFRESH) {
|
|
bestMode = p;
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
break;
|
|
}
|
|
refresh = xf86ModeVRefresh(p);
|
|
if (p->Flags & V_INTERLACE)
|
|
refresh /= INTERLACE_REFRESH_WEIGHT;
|
|
if (refresh > bestRefresh) {
|
|
bestMode = p;
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
bestRefresh = refresh;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Clock is in range, so if it is not a programmable clock, find
|
|
* a matching clock.
|
|
*/
|
|
|
|
i = xf86GetNearestClock(scrp, p->Clock, allowDiv2,
|
|
cp->ClockDivFactor, cp->ClockMulFactor,
|
|
&k);
|
|
/*
|
|
* If the clock is too far from the requested clock, this
|
|
* mode is no good.
|
|
*/
|
|
if (k & V_CLKDIV2)
|
|
gap = abs((p->Clock * 2) -
|
|
((scrp->clock[i] * cp->ClockDivFactor) /
|
|
cp->ClockMulFactor));
|
|
else
|
|
gap = abs(p->Clock -
|
|
((scrp->clock[i] * cp->ClockDivFactor) /
|
|
cp->ClockMulFactor));
|
|
if (gap > minimumGap) {
|
|
p->status = MODE_NOCLOCK;
|
|
if (!found)
|
|
status = MODE_NOCLOCK;
|
|
continue;
|
|
}
|
|
found = TRUE;
|
|
|
|
if (strategy == LOOKUP_BEST_REFRESH) {
|
|
refresh = xf86ModeVRefresh(p);
|
|
if (p->Flags & V_INTERLACE)
|
|
refresh /= INTERLACE_REFRESH_WEIGHT;
|
|
if (refresh > bestRefresh) {
|
|
bestMode = p;
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
extraFlags = k;
|
|
clockIndex = i;
|
|
bestRefresh = refresh;
|
|
}
|
|
continue;
|
|
}
|
|
if (strategy == LOOKUP_CLOSEST_CLOCK) {
|
|
if (gap < minimumGap) {
|
|
bestMode = p;
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
extraFlags = k;
|
|
clockIndex = i;
|
|
minimumGap = gap;
|
|
}
|
|
continue;
|
|
}
|
|
/*
|
|
* If strategy is neither LOOKUP_BEST_REFRESH or
|
|
* LOOKUP_CLOSEST_CLOCK the required mode has been found.
|
|
*/
|
|
bestMode = p;
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
extraFlags = k;
|
|
clockIndex = i;
|
|
break;
|
|
}
|
|
}
|
|
if (found)
|
|
break;
|
|
}
|
|
if (!found || bestMode == NULL)
|
|
return status;
|
|
|
|
/* Fill in the mode parameters */
|
|
if (scrp->progClock) {
|
|
modep->Clock = bestMode->Clock;
|
|
modep->ClockIndex = -1;
|
|
modep->SynthClock = (modep->Clock * MulFactor) / DivFactor;
|
|
}
|
|
else {
|
|
modep->Clock = (scrp->clock[clockIndex] * DivFactor) / MulFactor;
|
|
modep->ClockIndex = clockIndex;
|
|
modep->SynthClock = scrp->clock[clockIndex];
|
|
if (extraFlags & V_CLKDIV2) {
|
|
modep->Clock /= 2;
|
|
modep->SynthClock /= 2;
|
|
}
|
|
}
|
|
modep->type = bestMode->type;
|
|
modep->PrivFlags = ModePrivFlags;
|
|
modep->HDisplay = bestMode->HDisplay;
|
|
modep->HSyncStart = bestMode->HSyncStart;
|
|
modep->HSyncEnd = bestMode->HSyncEnd;
|
|
modep->HTotal = bestMode->HTotal;
|
|
modep->HSkew = bestMode->HSkew;
|
|
modep->VDisplay = bestMode->VDisplay;
|
|
modep->VSyncStart = bestMode->VSyncStart;
|
|
modep->VSyncEnd = bestMode->VSyncEnd;
|
|
modep->VTotal = bestMode->VTotal;
|
|
modep->VScan = bestMode->VScan;
|
|
modep->Flags = bestMode->Flags | extraFlags;
|
|
modep->CrtcHDisplay = bestMode->CrtcHDisplay;
|
|
modep->CrtcHBlankStart = bestMode->CrtcHBlankStart;
|
|
modep->CrtcHSyncStart = bestMode->CrtcHSyncStart;
|
|
modep->CrtcHSyncEnd = bestMode->CrtcHSyncEnd;
|
|
modep->CrtcHBlankEnd = bestMode->CrtcHBlankEnd;
|
|
modep->CrtcHTotal = bestMode->CrtcHTotal;
|
|
modep->CrtcHSkew = bestMode->CrtcHSkew;
|
|
modep->CrtcVDisplay = bestMode->CrtcVDisplay;
|
|
modep->CrtcVBlankStart = bestMode->CrtcVBlankStart;
|
|
modep->CrtcVSyncStart = bestMode->CrtcVSyncStart;
|
|
modep->CrtcVSyncEnd = bestMode->CrtcVSyncEnd;
|
|
modep->CrtcVBlankEnd = bestMode->CrtcVBlankEnd;
|
|
modep->CrtcVTotal = bestMode->CrtcVTotal;
|
|
modep->CrtcHAdjusted = bestMode->CrtcHAdjusted;
|
|
modep->CrtcVAdjusted = bestMode->CrtcVAdjusted;
|
|
modep->HSync = bestMode->HSync;
|
|
modep->VRefresh = bestMode->VRefresh;
|
|
modep->Private = bestMode->Private;
|
|
modep->PrivSize = bestMode->PrivSize;
|
|
|
|
bestMode->prev = modep;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
/*
|
|
* xf86CheckModeForMonitor
|
|
*
|
|
* This function takes a mode and monitor description, and determines
|
|
* if the mode is valid for the monitor.
|
|
*/
|
|
ModeStatus
|
|
xf86CheckModeForMonitor(DisplayModePtr mode, MonPtr monitor)
|
|
{
|
|
int i;
|
|
|
|
/* Sanity checks */
|
|
if (mode == NULL || monitor == NULL) {
|
|
ErrorF("xf86CheckModeForMonitor: called with invalid parameters\n");
|
|
return MODE_ERROR;
|
|
}
|
|
|
|
DebugF("xf86CheckModeForMonitor(%p %s, %p %s)\n",
|
|
mode, mode->name, monitor, monitor->id);
|
|
|
|
/* Some basic mode validity checks */
|
|
if (0 >= mode->HDisplay || mode->HDisplay > mode->HSyncStart ||
|
|
mode->HSyncStart >= mode->HSyncEnd || mode->HSyncEnd >= mode->HTotal)
|
|
return MODE_H_ILLEGAL;
|
|
|
|
if (0 >= mode->VDisplay || mode->VDisplay > mode->VSyncStart ||
|
|
mode->VSyncStart >= mode->VSyncEnd || mode->VSyncEnd >= mode->VTotal)
|
|
return MODE_V_ILLEGAL;
|
|
|
|
if (monitor->nHsync > 0) {
|
|
/* Check hsync against the allowed ranges */
|
|
float hsync = xf86ModeHSync(mode);
|
|
|
|
for (i = 0; i < monitor->nHsync; i++)
|
|
if ((hsync > monitor->hsync[i].lo * (1.0 - SYNC_TOLERANCE)) &&
|
|
(hsync < monitor->hsync[i].hi * (1.0 + SYNC_TOLERANCE)))
|
|
break;
|
|
|
|
/* Now see whether we ran out of sync ranges without finding a match */
|
|
if (i == monitor->nHsync)
|
|
return MODE_HSYNC;
|
|
}
|
|
|
|
if (monitor->nVrefresh > 0) {
|
|
/* Check vrefresh against the allowed ranges */
|
|
float vrefrsh = xf86ModeVRefresh(mode);
|
|
|
|
for (i = 0; i < monitor->nVrefresh; i++)
|
|
if ((vrefrsh > monitor->vrefresh[i].lo * (1.0 - SYNC_TOLERANCE)) &&
|
|
(vrefrsh < monitor->vrefresh[i].hi * (1.0 + SYNC_TOLERANCE)))
|
|
break;
|
|
|
|
/* Now see whether we ran out of refresh ranges without finding a match */
|
|
if (i == monitor->nVrefresh)
|
|
return MODE_VSYNC;
|
|
}
|
|
|
|
/* Force interlaced modes to have an odd VTotal */
|
|
if (mode->Flags & V_INTERLACE)
|
|
mode->CrtcVTotal = mode->VTotal |= 1;
|
|
|
|
/*
|
|
* This code stops cvt -r modes, and only cvt -r modes, from hitting 15y+
|
|
* old CRTs which might, when there is a lot of solar flare activity and
|
|
* when the celestial bodies are unfavourably aligned, implode trying to
|
|
* sync to it. It's called "Protecting the user from doing anything stupid".
|
|
* -- libv
|
|
*/
|
|
|
|
if (xf86ModeIsReduced(mode)) {
|
|
if (!monitor->reducedblanking && !(mode->type & M_T_DRIVER))
|
|
return MODE_NO_REDUCED;
|
|
}
|
|
|
|
if ((monitor->maxPixClock) && (mode->Clock > monitor->maxPixClock))
|
|
return MODE_CLOCK_HIGH;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
/*
|
|
* xf86CheckModeSize
|
|
*
|
|
* An internal routine to check if a mode fits in video memory. This tries to
|
|
* avoid overflows that would otherwise occur when video memory size is greater
|
|
* than 256MB.
|
|
*/
|
|
static Bool
|
|
xf86CheckModeSize(ScrnInfoPtr scrp, int w, int x, int y)
|
|
{
|
|
int bpp = scrp->fbFormat.bitsPerPixel, pad = scrp->fbFormat.scanlinePad;
|
|
int lineWidth, lastWidth;
|
|
|
|
if (scrp->depth == 4)
|
|
pad *= 4; /* 4 planes */
|
|
|
|
/* Sanity check */
|
|
if ((w < 0) || (x < 0) || (y <= 0))
|
|
return FALSE;
|
|
|
|
lineWidth = (((w * bpp) + pad - 1) / pad) * pad;
|
|
lastWidth = x * bpp;
|
|
|
|
/*
|
|
* At this point, we need to compare
|
|
*
|
|
* (lineWidth * (y - 1)) + lastWidth
|
|
*
|
|
* against
|
|
*
|
|
* scrp->videoRam * (1024 * 8)
|
|
*
|
|
* These are bit quantities. To avoid overflows, do the comparison in
|
|
* terms of BITMAP_SCANLINE_PAD units. This assumes BITMAP_SCANLINE_PAD
|
|
* is a power of 2. We currently use 32, which limits us to a video
|
|
* memory size of 8GB.
|
|
*/
|
|
|
|
lineWidth = (lineWidth + (BITMAP_SCANLINE_PAD - 1)) / BITMAP_SCANLINE_PAD;
|
|
lastWidth = (lastWidth + (BITMAP_SCANLINE_PAD - 1)) / BITMAP_SCANLINE_PAD;
|
|
|
|
if ((lineWidth * (y - 1) + lastWidth) >
|
|
(scrp->videoRam * ((1024 * 8) / BITMAP_SCANLINE_PAD)))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* xf86InitialCheckModeForDriver
|
|
*
|
|
* This function checks if a mode satisfies a driver's initial requirements:
|
|
* - mode size fits within the available pixel area (memory)
|
|
* - width lies within the range of supported line pitches
|
|
* - mode size fits within virtual size (if fixed)
|
|
* - horizontal timings are in range
|
|
*
|
|
* This function takes the following parameters:
|
|
* scrp ScrnInfoPtr
|
|
* mode mode to check
|
|
* maxPitch (optional) maximum line pitch
|
|
* virtualX (optional) virtual width requested
|
|
* virtualY (optional) virtual height requested
|
|
*
|
|
* In addition, the following fields from the ScrnInfoRec are used:
|
|
* monitor pointer to structure for monitor section
|
|
* fbFormat pixel format for the framebuffer
|
|
* videoRam video memory size (in kB)
|
|
*/
|
|
|
|
static ModeStatus
|
|
xf86InitialCheckModeForDriver(ScrnInfoPtr scrp, DisplayModePtr mode,
|
|
ClockRangePtr clockRanges,
|
|
LookupModeFlags strategy,
|
|
int maxPitch, int virtualX, int virtualY)
|
|
{
|
|
ClockRangePtr cp;
|
|
ModeStatus status;
|
|
Bool allowDiv2 = (strategy & LOOKUP_CLKDIV2) != 0;
|
|
int i, needDiv2;
|
|
|
|
/* Sanity checks */
|
|
if (!scrp || !mode || !clockRanges) {
|
|
ErrorF("xf86InitialCheckModeForDriver: "
|
|
"called with invalid parameters\n");
|
|
return MODE_ERROR;
|
|
}
|
|
|
|
DebugF("xf86InitialCheckModeForDriver(%p, %p %s, %p, 0x%x, %d, %d, %d)\n",
|
|
scrp, mode, mode->name, clockRanges, strategy, maxPitch, virtualX,
|
|
virtualY);
|
|
|
|
/* Some basic mode validity checks */
|
|
if (0 >= mode->HDisplay || mode->HDisplay > mode->HSyncStart ||
|
|
mode->HSyncStart >= mode->HSyncEnd || mode->HSyncEnd >= mode->HTotal)
|
|
return MODE_H_ILLEGAL;
|
|
|
|
if (0 >= mode->VDisplay || mode->VDisplay > mode->VSyncStart ||
|
|
mode->VSyncStart >= mode->VSyncEnd || mode->VSyncEnd >= mode->VTotal)
|
|
return MODE_V_ILLEGAL;
|
|
|
|
if (!xf86CheckModeSize(scrp, mode->HDisplay, mode->HDisplay,
|
|
mode->VDisplay))
|
|
return MODE_MEM;
|
|
|
|
if (maxPitch > 0 && mode->HDisplay > maxPitch)
|
|
return MODE_BAD_WIDTH;
|
|
|
|
if (virtualX > 0 && mode->HDisplay > virtualX)
|
|
return MODE_VIRTUAL_X;
|
|
|
|
if (virtualY > 0 && mode->VDisplay > virtualY)
|
|
return MODE_VIRTUAL_Y;
|
|
|
|
/*
|
|
* The use of the DisplayModeRec's Crtc* and SynthClock elements below is
|
|
* provisional, in that they are later reused by the driver at mode-set
|
|
* time. Here, they are temporarily enlisted to contain the mode timings
|
|
* as seen by the CRT or panel (rather than the CRTC). The driver's
|
|
* ValidMode() is allowed to modify these so it can deal with such things
|
|
* as mode stretching and/or centering. The driver should >NOT< modify the
|
|
* user-supplied values as these are reported back when mode validation is
|
|
* said and done.
|
|
*/
|
|
/*
|
|
* NOTE: We (ab)use the mode->Crtc* values here to store timing
|
|
* information for the calculation of Hsync and Vrefresh. Before
|
|
* these values are calculated the driver is given the opportunity
|
|
* to either set these HSync and VRefresh itself or modify the timing
|
|
* values.
|
|
* The difference to the final calculation is small but imortand:
|
|
* here we pass the flag INTERLACE_HALVE_V regardless if the driver
|
|
* sets it or not. This way our calculation of VRefresh has the same
|
|
* effect as if we do if (flags & V_INTERLACE) refresh *= 2.0
|
|
* This dual use of the mode->Crtc* values will certainly create
|
|
* confusion and is bad software design. However since it's part of
|
|
* the driver API it's hard to change.
|
|
*/
|
|
|
|
if (scrp->ValidMode) {
|
|
|
|
xf86SetModeCrtc(mode, INTERLACE_HALVE_V);
|
|
|
|
cp = xf86FindClockRangeForMode(clockRanges, mode);
|
|
if (!cp)
|
|
return MODE_CLOCK_RANGE;
|
|
|
|
if (cp->ClockMulFactor < 1)
|
|
cp->ClockMulFactor = 1;
|
|
if (cp->ClockDivFactor < 1)
|
|
cp->ClockDivFactor = 1;
|
|
|
|
/*
|
|
* XXX The effect of clock dividers and multipliers on the monitor's
|
|
* pixel clock needs to be verified.
|
|
*/
|
|
if (scrp->progClock) {
|
|
mode->SynthClock = mode->Clock;
|
|
}
|
|
else {
|
|
i = xf86GetNearestClock(scrp, mode->Clock, allowDiv2,
|
|
cp->ClockDivFactor, cp->ClockMulFactor,
|
|
&needDiv2);
|
|
mode->SynthClock = (scrp->clock[i] * cp->ClockDivFactor) /
|
|
cp->ClockMulFactor;
|
|
if (needDiv2 & V_CLKDIV2)
|
|
mode->SynthClock /= 2;
|
|
}
|
|
|
|
status = (*scrp->ValidMode) (scrp, mode, FALSE,
|
|
MODECHECK_INITIAL);
|
|
if (status != MODE_OK)
|
|
return status;
|
|
|
|
if (mode->HSync <= 0.0)
|
|
mode->HSync = (float) mode->SynthClock / (float) mode->CrtcHTotal;
|
|
if (mode->VRefresh <= 0.0)
|
|
mode->VRefresh = (mode->SynthClock * 1000.0)
|
|
/ (mode->CrtcHTotal * mode->CrtcVTotal);
|
|
}
|
|
|
|
mode->HSync = xf86ModeHSync(mode);
|
|
mode->VRefresh = xf86ModeVRefresh(mode);
|
|
|
|
/* Assume it is OK */
|
|
return MODE_OK;
|
|
}
|
|
|
|
/*
|
|
* xf86CheckModeForDriver
|
|
*
|
|
* This function is for checking modes while the server is running (for
|
|
* use mainly by the VidMode extension).
|
|
*
|
|
* This function checks if a mode satisfies a driver's requirements:
|
|
* - width lies within the line pitch
|
|
* - mode size fits within virtual size
|
|
* - horizontal/vertical timings are in range
|
|
*
|
|
* This function takes the following parameters:
|
|
* scrp ScrnInfoPtr
|
|
* mode mode to check
|
|
* flags not (currently) used
|
|
*
|
|
* In addition, the following fields from the ScrnInfoRec are used:
|
|
* virtualX virtual width
|
|
* virtualY virtual height
|
|
* clockRanges allowable clock ranges
|
|
*/
|
|
|
|
ModeStatus
|
|
xf86CheckModeForDriver(ScrnInfoPtr scrp, DisplayModePtr mode, int flags)
|
|
{
|
|
ClockRangePtr cp;
|
|
int i, k, gap, minimumGap = CLOCK_TOLERANCE + 1;
|
|
int extraFlags = 0;
|
|
int clockIndex = -1;
|
|
int MulFactor = 1;
|
|
int DivFactor = 1;
|
|
int ModePrivFlags = 0;
|
|
ModeStatus status = MODE_NOMODE;
|
|
|
|
/* Some sanity checking */
|
|
if (scrp == NULL || (!scrp->progClock && scrp->numClocks == 0)) {
|
|
ErrorF("xf86CheckModeForDriver: called with invalid scrnInfoRec\n");
|
|
return MODE_ERROR;
|
|
}
|
|
if (mode == NULL) {
|
|
ErrorF("xf86CheckModeForDriver: called with invalid modep\n");
|
|
return MODE_ERROR;
|
|
}
|
|
|
|
/* Check the mode size */
|
|
if (mode->HDisplay > scrp->virtualX)
|
|
return MODE_VIRTUAL_X;
|
|
|
|
if (mode->VDisplay > scrp->virtualY)
|
|
return MODE_VIRTUAL_Y;
|
|
|
|
for (cp = scrp->clockRanges; cp != NULL; cp = cp->next) {
|
|
/* DivFactor and MulFactor must be > 0 */
|
|
cp->ClockDivFactor = max(1, cp->ClockDivFactor);
|
|
cp->ClockMulFactor = max(1, cp->ClockMulFactor);
|
|
}
|
|
|
|
if (scrp->progClock) {
|
|
/* Check clock is in range */
|
|
for (cp = scrp->clockRanges; cp != NULL; cp = cp->next) {
|
|
if (modeInClockRange(cp, mode))
|
|
break;
|
|
}
|
|
if (cp == NULL) {
|
|
return MODE_CLOCK_RANGE;
|
|
}
|
|
/*
|
|
* If programmable clock the required mode has been found
|
|
*/
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
}
|
|
else {
|
|
status = MODE_CLOCK_RANGE;
|
|
/* Check clock is in range */
|
|
for (cp = scrp->clockRanges; cp != NULL; cp = cp->next) {
|
|
if (modeInClockRange(cp, mode)) {
|
|
/*
|
|
* Clock is in range, so if it is not a programmable clock,
|
|
* find a matching clock.
|
|
*/
|
|
|
|
i = xf86GetNearestClock(scrp, mode->Clock, 0,
|
|
cp->ClockDivFactor, cp->ClockMulFactor,
|
|
&k);
|
|
/*
|
|
* If the clock is too far from the requested clock, this
|
|
* mode is no good.
|
|
*/
|
|
if (k & V_CLKDIV2)
|
|
gap = abs((mode->Clock * 2) -
|
|
((scrp->clock[i] * cp->ClockDivFactor) /
|
|
cp->ClockMulFactor));
|
|
else
|
|
gap = abs(mode->Clock -
|
|
((scrp->clock[i] * cp->ClockDivFactor) /
|
|
cp->ClockMulFactor));
|
|
if (gap > minimumGap) {
|
|
status = MODE_NOCLOCK;
|
|
continue;
|
|
}
|
|
|
|
DivFactor = cp->ClockDivFactor;
|
|
MulFactor = cp->ClockMulFactor;
|
|
ModePrivFlags = cp->PrivFlags;
|
|
extraFlags = k;
|
|
clockIndex = i;
|
|
break;
|
|
}
|
|
}
|
|
if (cp == NULL)
|
|
return status;
|
|
}
|
|
|
|
/* Fill in the mode parameters */
|
|
if (scrp->progClock) {
|
|
mode->ClockIndex = -1;
|
|
mode->SynthClock = (mode->Clock * MulFactor) / DivFactor;
|
|
}
|
|
else {
|
|
mode->Clock = (scrp->clock[clockIndex] * DivFactor) / MulFactor;
|
|
mode->ClockIndex = clockIndex;
|
|
mode->SynthClock = scrp->clock[clockIndex];
|
|
if (extraFlags & V_CLKDIV2) {
|
|
mode->Clock /= 2;
|
|
mode->SynthClock /= 2;
|
|
}
|
|
}
|
|
mode->PrivFlags = ModePrivFlags;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static int
|
|
inferVirtualSize(ScrnInfoPtr scrp, DisplayModePtr modes, int *vx, int *vy)
|
|
{
|
|
float aspect = 0.0;
|
|
MonPtr mon = scrp->monitor;
|
|
xf86MonPtr DDC;
|
|
int x = 0, y = 0;
|
|
DisplayModePtr mode;
|
|
|
|
if (!mon)
|
|
return 0;
|
|
DDC = mon->DDC;
|
|
|
|
if (DDC && DDC->ver.revision >= 4) {
|
|
/* For 1.4, we might actually get native pixel format. How novel. */
|
|
if (PREFERRED_TIMING_MODE(DDC->features.msc)) {
|
|
for (mode = modes; mode; mode = mode->next) {
|
|
if (mode->type & (M_T_DRIVER | M_T_PREFERRED)) {
|
|
x = mode->HDisplay;
|
|
y = mode->VDisplay;
|
|
goto found;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Even if we don't, we might get aspect ratio from extra CVT info
|
|
* or from the monitor size fields. TODO.
|
|
*/
|
|
}
|
|
|
|
/*
|
|
* Technically this triggers if either is zero. That wasn't legal
|
|
* before EDID 1.4, but right now we'll get that wrong. TODO.
|
|
*/
|
|
if (!aspect) {
|
|
if (!mon->widthmm || !mon->heightmm)
|
|
aspect = 4.0 / 3.0;
|
|
else
|
|
aspect = (float) mon->widthmm / (float) mon->heightmm;
|
|
}
|
|
|
|
/* find the largest M_T_DRIVER mode with that aspect ratio */
|
|
for (mode = modes; mode; mode = mode->next) {
|
|
float mode_aspect, metaspect;
|
|
|
|
if (!(mode->type & (M_T_DRIVER | M_T_USERDEF)))
|
|
continue;
|
|
mode_aspect = (float) mode->HDisplay / (float) mode->VDisplay;
|
|
metaspect = aspect / mode_aspect;
|
|
/* 5% slop or so, since we only get size in centimeters */
|
|
if (fabs(1.0 - metaspect) < 0.05) {
|
|
if ((mode->HDisplay > x) && (mode->VDisplay > y)) {
|
|
x = mode->HDisplay;
|
|
y = mode->VDisplay;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!x || !y) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_WARNING,
|
|
"Unable to estimate virtual size\n");
|
|
return 0;
|
|
}
|
|
|
|
found:
|
|
*vx = x;
|
|
*vy = y;
|
|
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"Estimated virtual size for aspect ratio %.4f is %dx%d\n",
|
|
aspect, *vx, *vy);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Least common multiple */
|
|
static unsigned int
|
|
LCM(unsigned int x, unsigned int y)
|
|
{
|
|
unsigned int m = x, n = y, o;
|
|
|
|
while ((o = m % n)) {
|
|
m = n;
|
|
n = o;
|
|
}
|
|
|
|
return (x / n) * y;
|
|
}
|
|
|
|
/*
|
|
* Given various screen attributes, determine the minimum scanline width such
|
|
* that each scanline is server and DDX padded and any pixels with embedded
|
|
* bank boundaries are off-screen. This function returns -1 if such a width
|
|
* cannot exist.
|
|
*/
|
|
static int
|
|
scanLineWidth(unsigned int xsize, /* pixels */
|
|
unsigned int ysize, /* pixels */
|
|
unsigned int width, /* pixels */
|
|
unsigned long BankSize, /* char's */
|
|
PixmapFormatRec * pBankFormat, unsigned int nWidthUnit /* bits */
|
|
)
|
|
{
|
|
unsigned long nBitsPerBank, nBitsPerScanline, nBitsPerScanlinePadUnit;
|
|
unsigned long minBitsPerScanline, maxBitsPerScanline;
|
|
|
|
/* Sanity checks */
|
|
|
|
if (!nWidthUnit || !pBankFormat)
|
|
return -1;
|
|
|
|
nBitsPerBank = BankSize * 8;
|
|
if (nBitsPerBank % pBankFormat->scanlinePad)
|
|
return -1;
|
|
|
|
if (xsize > width)
|
|
width = xsize;
|
|
nBitsPerScanlinePadUnit = LCM(pBankFormat->scanlinePad, nWidthUnit);
|
|
nBitsPerScanline =
|
|
(((width * pBankFormat->bitsPerPixel) + nBitsPerScanlinePadUnit - 1) /
|
|
nBitsPerScanlinePadUnit) * nBitsPerScanlinePadUnit;
|
|
width = nBitsPerScanline / pBankFormat->bitsPerPixel;
|
|
|
|
if (!xsize || !(nBitsPerBank % pBankFormat->bitsPerPixel))
|
|
return (int) width;
|
|
|
|
/*
|
|
* Scanlines will be server-pad aligned at this point. They will also be
|
|
* a multiple of nWidthUnit bits long. Ensure that pixels with embedded
|
|
* bank boundaries are off-screen.
|
|
*
|
|
* It seems reasonable to limit total frame buffer size to 1/16 of the
|
|
* theoretical maximum address space size. On a machine with 32-bit
|
|
* addresses (to 8-bit quantities) this turns out to be 256MB. Not only
|
|
* does this provide a simple limiting condition for the loops below, but
|
|
* it also prevents unsigned long wraparounds.
|
|
*/
|
|
if (!ysize)
|
|
return -1;
|
|
|
|
minBitsPerScanline = xsize * pBankFormat->bitsPerPixel;
|
|
if (minBitsPerScanline > nBitsPerBank)
|
|
return -1;
|
|
|
|
if (ysize == 1)
|
|
return (int) width;
|
|
|
|
maxBitsPerScanline =
|
|
(((unsigned long) (-1) >> 1) - minBitsPerScanline) / (ysize - 1);
|
|
while (nBitsPerScanline <= maxBitsPerScanline) {
|
|
unsigned long BankBase, BankUnit;
|
|
|
|
BankUnit = ((nBitsPerBank + nBitsPerScanline - 1) / nBitsPerBank) *
|
|
nBitsPerBank;
|
|
if (!(BankUnit % nBitsPerScanline))
|
|
return (int) width;
|
|
|
|
for (BankBase = BankUnit;; BankBase += nBitsPerBank) {
|
|
unsigned long x, y;
|
|
|
|
y = BankBase / nBitsPerScanline;
|
|
if (y >= ysize)
|
|
return (int) width;
|
|
|
|
x = BankBase % nBitsPerScanline;
|
|
if (!(x % pBankFormat->bitsPerPixel))
|
|
continue;
|
|
|
|
if (x < minBitsPerScanline) {
|
|
/*
|
|
* Skip ahead certain widths by dividing the excess scanline
|
|
* amongst the y's.
|
|
*/
|
|
y *= nBitsPerScanlinePadUnit;
|
|
nBitsPerScanline += ((x + y - 1) / y) * nBitsPerScanlinePadUnit;
|
|
width = nBitsPerScanline / pBankFormat->bitsPerPixel;
|
|
break;
|
|
}
|
|
|
|
if (BankBase != BankUnit)
|
|
continue;
|
|
|
|
if (!(nBitsPerScanline % x))
|
|
return (int) width;
|
|
|
|
BankBase = ((nBitsPerScanline - minBitsPerScanline) /
|
|
(nBitsPerScanline - x)) * BankUnit;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* xf86ValidateModes
|
|
*
|
|
* This function takes a set of mode names, modes and limiting conditions,
|
|
* and selects a set of modes and parameters based on those conditions.
|
|
*
|
|
* This function takes the following parameters:
|
|
* scrp ScrnInfoPtr
|
|
* availModes the list of modes available for the monitor
|
|
* modeNames (optional) list of mode names that the screen is requesting
|
|
* clockRanges a list of clock ranges
|
|
* linePitches (optional) a list of line pitches
|
|
* minPitch (optional) minimum line pitch (in pixels)
|
|
* maxPitch (optional) maximum line pitch (in pixels)
|
|
* pitchInc (mandatory) pitch increment (in bits)
|
|
* minHeight (optional) minimum virtual height (in pixels)
|
|
* maxHeight (optional) maximum virtual height (in pixels)
|
|
* virtualX (optional) virtual width requested (in pixels)
|
|
* virtualY (optional) virtual height requested (in pixels)
|
|
* apertureSize size of video aperture (in bytes)
|
|
* strategy how to decide which mode to use from multiple modes with
|
|
* the same name
|
|
*
|
|
* In addition, the following fields from the ScrnInfoRec are used:
|
|
* clocks a list of discrete clocks
|
|
* numClocks number of discrete clocks
|
|
* progClock clock is programmable
|
|
* monitor pointer to structure for monitor section
|
|
* fbFormat format of the framebuffer
|
|
* videoRam video memory size
|
|
* xInc horizontal timing increment (defaults to 8 pixels)
|
|
*
|
|
* The function fills in the following ScrnInfoRec fields:
|
|
* modePool A subset of the modes available to the monitor which
|
|
* are compatible with the driver.
|
|
* modes one mode entry for each of the requested modes, with the
|
|
* status field filled in to indicate if the mode has been
|
|
* accepted or not.
|
|
* virtualX the resulting virtual width
|
|
* virtualY the resulting virtual height
|
|
* displayWidth the resulting line pitch
|
|
*
|
|
* The function's return value is the number of matching modes found, or -1
|
|
* if an unrecoverable error was encountered.
|
|
*/
|
|
|
|
int
|
|
xf86ValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
|
|
const char **modeNames, ClockRangePtr clockRanges,
|
|
int *linePitches, int minPitch, int maxPitch, int pitchInc,
|
|
int minHeight, int maxHeight, int virtualX, int virtualY,
|
|
int apertureSize, LookupModeFlags strategy)
|
|
{
|
|
DisplayModePtr p, q, r, new, last, *endp;
|
|
int i, numModes = 0;
|
|
ModeStatus status;
|
|
int linePitch = -1, virtX = 0, virtY = 0;
|
|
int newLinePitch, newVirtX, newVirtY;
|
|
int modeSize; /* in pixels */
|
|
Bool validateAllDefaultModes = FALSE;
|
|
Bool userModes = FALSE;
|
|
int saveType;
|
|
PixmapFormatRec *BankFormat;
|
|
ClockRangePtr cp;
|
|
int numTimings = 0;
|
|
range hsync[MAX_HSYNC];
|
|
range vrefresh[MAX_VREFRESH];
|
|
Bool inferred_virtual = FALSE;
|
|
|
|
DebugF
|
|
("xf86ValidateModes(%p, %p, %p, %p,\n\t\t %p, %d, %d, %d, %d, %d, %d, %d, %d, 0x%x)\n",
|
|
scrp, availModes, modeNames, clockRanges, linePitches, minPitch,
|
|
maxPitch, pitchInc, minHeight, maxHeight, virtualX, virtualY,
|
|
apertureSize, strategy);
|
|
|
|
/* Some sanity checking */
|
|
if (scrp == NULL || scrp->name == NULL || !scrp->monitor ||
|
|
(!scrp->progClock && scrp->numClocks == 0)) {
|
|
ErrorF("xf86ValidateModes: called with invalid scrnInfoRec\n");
|
|
return -1;
|
|
}
|
|
if (linePitches != NULL && linePitches[0] <= 0) {
|
|
ErrorF("xf86ValidateModes: called with invalid linePitches\n");
|
|
return -1;
|
|
}
|
|
if (pitchInc <= 0) {
|
|
ErrorF("xf86ValidateModes: called with invalid pitchInc\n");
|
|
return -1;
|
|
}
|
|
if ((virtualX > 0) != (virtualY > 0)) {
|
|
ErrorF("xf86ValidateModes: called with invalid virtual resolution\n");
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* If requested by the driver, allow missing hsync and/or vrefresh ranges
|
|
* in the monitor section.
|
|
*/
|
|
if (strategy & LOOKUP_OPTIONAL_TOLERANCES) {
|
|
strategy &= ~LOOKUP_OPTIONAL_TOLERANCES;
|
|
}
|
|
else {
|
|
const char *type = "";
|
|
Bool specified = FALSE;
|
|
|
|
if (scrp->monitor->nHsync <= 0) {
|
|
if (numTimings > 0) {
|
|
scrp->monitor->nHsync = numTimings;
|
|
for (i = 0; i < numTimings; i++) {
|
|
scrp->monitor->hsync[i].lo = hsync[i].lo;
|
|
scrp->monitor->hsync[i].hi = hsync[i].hi;
|
|
}
|
|
}
|
|
else {
|
|
scrp->monitor->hsync[0].lo = 31.5;
|
|
scrp->monitor->hsync[0].hi = 48.0;
|
|
scrp->monitor->nHsync = 1;
|
|
}
|
|
type = "default ";
|
|
}
|
|
else {
|
|
specified = TRUE;
|
|
}
|
|
for (i = 0; i < scrp->monitor->nHsync; i++) {
|
|
if (scrp->monitor->hsync[i].lo == scrp->monitor->hsync[i].hi)
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"%s: Using %shsync value of %.2f kHz\n",
|
|
scrp->monitor->id, type, scrp->monitor->hsync[i].lo);
|
|
else
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"%s: Using %shsync range of %.2f-%.2f kHz\n",
|
|
scrp->monitor->id, type,
|
|
scrp->monitor->hsync[i].lo,
|
|
scrp->monitor->hsync[i].hi);
|
|
}
|
|
|
|
type = "";
|
|
if (scrp->monitor->nVrefresh <= 0) {
|
|
if (numTimings > 0) {
|
|
scrp->monitor->nVrefresh = numTimings;
|
|
for (i = 0; i < numTimings; i++) {
|
|
scrp->monitor->vrefresh[i].lo = vrefresh[i].lo;
|
|
scrp->monitor->vrefresh[i].hi = vrefresh[i].hi;
|
|
}
|
|
}
|
|
else {
|
|
scrp->monitor->vrefresh[0].lo = 50;
|
|
scrp->monitor->vrefresh[0].hi = 70;
|
|
scrp->monitor->nVrefresh = 1;
|
|
}
|
|
type = "default ";
|
|
}
|
|
else {
|
|
specified = TRUE;
|
|
}
|
|
for (i = 0; i < scrp->monitor->nVrefresh; i++) {
|
|
if (scrp->monitor->vrefresh[i].lo == scrp->monitor->vrefresh[i].hi)
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"%s: Using %svrefresh value of %.2f Hz\n",
|
|
scrp->monitor->id, type,
|
|
scrp->monitor->vrefresh[i].lo);
|
|
else
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"%s: Using %svrefresh range of %.2f-%.2f Hz\n",
|
|
scrp->monitor->id, type,
|
|
scrp->monitor->vrefresh[i].lo,
|
|
scrp->monitor->vrefresh[i].hi);
|
|
}
|
|
|
|
type = "";
|
|
if (!scrp->monitor->maxPixClock && !specified) {
|
|
type = "default ";
|
|
scrp->monitor->maxPixClock = 65000.0;
|
|
}
|
|
if (scrp->monitor->maxPixClock) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO,
|
|
"%s: Using %smaximum pixel clock of %.2f MHz\n",
|
|
scrp->monitor->id, type,
|
|
(float) scrp->monitor->maxPixClock / 1000.0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Store the clockRanges for later use by the VidMode extension.
|
|
*/
|
|
nt_list_for_each_entry(cp, clockRanges, next) {
|
|
ClockRangePtr newCR = xnfalloc(sizeof(ClockRange));
|
|
memcpy(newCR, cp, sizeof(ClockRange));
|
|
newCR->next = NULL;
|
|
if (scrp->clockRanges == NULL)
|
|
scrp->clockRanges = newCR;
|
|
else
|
|
nt_list_append(newCR, scrp->clockRanges, ClockRange, next);
|
|
}
|
|
|
|
/* Determine which pixmap format to pass to scanLineWidth() */
|
|
if (scrp->depth > 4)
|
|
BankFormat = &scrp->fbFormat;
|
|
else
|
|
BankFormat = xf86GetPixFormat(scrp, 1); /* >not< scrp->depth! */
|
|
|
|
if (scrp->xInc <= 0)
|
|
scrp->xInc = 8; /* Suitable for VGA and others */
|
|
|
|
#define _VIRTUALX(x) ((((x) + scrp->xInc - 1) / scrp->xInc) * scrp->xInc)
|
|
|
|
/*
|
|
* Determine maxPitch if it wasn't given explicitly. Note linePitches
|
|
* always takes precedence if is non-NULL. In that case the minPitch and
|
|
* maxPitch values passed are ignored.
|
|
*/
|
|
if (linePitches) {
|
|
minPitch = maxPitch = linePitches[0];
|
|
for (i = 1; linePitches[i] > 0; i++) {
|
|
if (linePitches[i] > maxPitch)
|
|
maxPitch = linePitches[i];
|
|
if (linePitches[i] < minPitch)
|
|
minPitch = linePitches[i];
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialise virtX and virtY if the values are fixed.
|
|
*/
|
|
if (virtualY > 0) {
|
|
if (maxHeight > 0 && virtualY > maxHeight) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_ERROR,
|
|
"Virtual height (%d) is too large for the hardware "
|
|
"(max %d)\n", virtualY, maxHeight);
|
|
return -1;
|
|
}
|
|
|
|
if (minHeight > 0 && virtualY < minHeight) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_ERROR,
|
|
"Virtual height (%d) is too small for the hardware "
|
|
"(min %d)\n", virtualY, minHeight);
|
|
return -1;
|
|
}
|
|
|
|
virtualX = _VIRTUALX(virtualX);
|
|
if (linePitches != NULL) {
|
|
for (i = 0; linePitches[i] != 0; i++) {
|
|
if ((linePitches[i] >= virtualX) &&
|
|
(linePitches[i] ==
|
|
scanLineWidth(virtualX, virtualY, linePitches[i],
|
|
apertureSize, BankFormat, pitchInc))) {
|
|
linePitch = linePitches[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
linePitch = scanLineWidth(virtualX, virtualY, minPitch,
|
|
apertureSize, BankFormat, pitchInc);
|
|
}
|
|
|
|
if ((linePitch < minPitch) || (linePitch > maxPitch)) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_ERROR,
|
|
"Virtual width (%d) is too large for the hardware "
|
|
"(max %d)\n", virtualX, maxPitch);
|
|
return -1;
|
|
}
|
|
|
|
if (!xf86CheckModeSize(scrp, linePitch, virtualX, virtualY)) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_ERROR,
|
|
"Virtual size (%dx%d) (pitch %d) exceeds video memory\n",
|
|
virtualX, virtualY, linePitch);
|
|
return -1;
|
|
}
|
|
|
|
virtX = virtualX;
|
|
virtY = virtualY;
|
|
}
|
|
else if (!modeNames || !*modeNames) {
|
|
/* No virtual size given in the config, try to infer */
|
|
/* XXX this doesn't take m{in,ax}Pitch into account; oh well */
|
|
inferred_virtual = inferVirtualSize(scrp, availModes, &virtX, &virtY);
|
|
if (inferred_virtual)
|
|
linePitch = scanLineWidth(virtX, virtY, minPitch, apertureSize,
|
|
BankFormat, pitchInc);
|
|
}
|
|
|
|
/* Print clock ranges and scaled clocks */
|
|
xf86ShowClockRanges(scrp, clockRanges);
|
|
|
|
/*
|
|
* If scrp->modePool hasn't been setup yet, set it up now. This allows the
|
|
* modes that the driver definitely can't use to be weeded out early. Note
|
|
* that a modePool mode's prev field is used to hold a pointer to the
|
|
* member of the scrp->modes list for which a match was considered.
|
|
*/
|
|
if (scrp->modePool == NULL) {
|
|
q = NULL;
|
|
for (p = availModes; p != NULL; p = p->next) {
|
|
status = xf86InitialCheckModeForDriver(scrp, p, clockRanges,
|
|
strategy, maxPitch,
|
|
virtX, virtY);
|
|
|
|
if (status == MODE_OK) {
|
|
status = xf86CheckModeForMonitor(p, scrp->monitor);
|
|
}
|
|
|
|
if (status == MODE_OK) {
|
|
new = xnfalloc(sizeof(DisplayModeRec));
|
|
*new = *p;
|
|
new->next = NULL;
|
|
if (!q) {
|
|
scrp->modePool = new;
|
|
}
|
|
else {
|
|
q->next = new;
|
|
}
|
|
new->prev = NULL;
|
|
q = new;
|
|
q->name = xnfstrdup(p->name);
|
|
q->status = MODE_OK;
|
|
}
|
|
else {
|
|
printModeRejectMessage(scrp->scrnIndex, p, status);
|
|
}
|
|
}
|
|
|
|
if (scrp->modePool == NULL) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_WARNING, "Mode pool is empty\n");
|
|
return 0;
|
|
}
|
|
}
|
|
else {
|
|
for (p = scrp->modePool; p != NULL; p = p->next) {
|
|
p->prev = NULL;
|
|
p->status = MODE_OK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate one entry in scrp->modes for each named mode.
|
|
*/
|
|
while (scrp->modes)
|
|
xf86DeleteMode(&scrp->modes, scrp->modes);
|
|
endp = &scrp->modes;
|
|
last = NULL;
|
|
if (modeNames != NULL) {
|
|
for (i = 0; modeNames[i] != NULL; i++) {
|
|
userModes = TRUE;
|
|
new = xnfcalloc(1, sizeof(DisplayModeRec));
|
|
new->prev = last;
|
|
new->type = M_T_USERDEF;
|
|
new->name = xnfstrdup(modeNames[i]);
|
|
if (new->prev)
|
|
new->prev->next = new;
|
|
*endp = last = new;
|
|
endp = &new->next;
|
|
}
|
|
}
|
|
|
|
/* Lookup each mode */
|
|
#ifdef PANORAMIX
|
|
if (noPanoramiXExtension)
|
|
validateAllDefaultModes = TRUE;
|
|
#endif
|
|
|
|
for (p = scrp->modes;; p = p->next) {
|
|
Bool repeat;
|
|
|
|
/*
|
|
* If the supplied mode names don't produce a valid mode, scan through
|
|
* unconsidered modePool members until one survives validation. This
|
|
* is done in decreasing order by mode pixel area.
|
|
*/
|
|
|
|
if (p == NULL) {
|
|
if ((numModes > 0) && !validateAllDefaultModes)
|
|
break;
|
|
|
|
validateAllDefaultModes = TRUE;
|
|
r = NULL;
|
|
modeSize = 0;
|
|
for (q = scrp->modePool; q != NULL; q = q->next) {
|
|
if ((q->prev == NULL) && (q->status == MODE_OK)) {
|
|
/*
|
|
* Deal with the case where this mode wasn't considered
|
|
* because of a builtin mode of the same name.
|
|
*/
|
|
for (p = scrp->modes; p != NULL; p = p->next) {
|
|
if ((p->status != MODE_OK) && !strcmp(p->name, q->name))
|
|
break;
|
|
}
|
|
|
|
if (p != NULL)
|
|
q->prev = p;
|
|
else {
|
|
/*
|
|
* A quick check to not allow default modes with
|
|
* horizontal timing parameters that CRTs may have
|
|
* problems with.
|
|
*/
|
|
if (!scrp->monitor->reducedblanking &&
|
|
(q->type & M_T_DEFAULT) &&
|
|
((double) q->HTotal / (double) q->HDisplay) < 1.15)
|
|
continue;
|
|
|
|
if (modeSize < (q->HDisplay * q->VDisplay)) {
|
|
r = q;
|
|
modeSize = q->HDisplay * q->VDisplay;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (r == NULL)
|
|
break;
|
|
|
|
p = xnfcalloc(1, sizeof(DisplayModeRec));
|
|
p->prev = last;
|
|
p->name = xnfstrdup(r->name);
|
|
if (!userModes)
|
|
p->type = M_T_USERDEF;
|
|
if (p->prev)
|
|
p->prev->next = p;
|
|
*endp = last = p;
|
|
endp = &p->next;
|
|
}
|
|
|
|
repeat = FALSE;
|
|
lookupNext:
|
|
if (repeat && ((status = p->status) != MODE_OK))
|
|
printModeRejectMessage(scrp->scrnIndex, p, status);
|
|
saveType = p->type;
|
|
status = xf86LookupMode(scrp, p, clockRanges, strategy);
|
|
if (repeat && status == MODE_NOMODE)
|
|
continue;
|
|
if (status != MODE_OK)
|
|
printModeRejectMessage(scrp->scrnIndex, p, status);
|
|
if (status == MODE_ERROR) {
|
|
ErrorF("xf86ValidateModes: "
|
|
"unexpected result from xf86LookupMode()\n");
|
|
return -1;
|
|
}
|
|
if (status != MODE_OK) {
|
|
if (p->status == MODE_OK)
|
|
p->status = status;
|
|
continue;
|
|
}
|
|
p->type |= saveType;
|
|
repeat = TRUE;
|
|
|
|
newLinePitch = linePitch;
|
|
newVirtX = virtX;
|
|
newVirtY = virtY;
|
|
|
|
/*
|
|
* Don't let non-user defined modes increase the virtual size
|
|
*/
|
|
if (!(p->type & M_T_USERDEF) && (numModes > 0)) {
|
|
if (p->HDisplay > virtX) {
|
|
p->status = MODE_VIRTUAL_X;
|
|
goto lookupNext;
|
|
}
|
|
if (p->VDisplay > virtY) {
|
|
p->status = MODE_VIRTUAL_Y;
|
|
goto lookupNext;
|
|
}
|
|
}
|
|
/*
|
|
* Adjust virtual width and height if the mode is too large for the
|
|
* current values and if they are not fixed.
|
|
*/
|
|
if (virtualX <= 0 && p->HDisplay > newVirtX)
|
|
newVirtX = _VIRTUALX(p->HDisplay);
|
|
if (virtualY <= 0 && p->VDisplay > newVirtY) {
|
|
if (maxHeight > 0 && p->VDisplay > maxHeight) {
|
|
p->status = MODE_VIRTUAL_Y; /* ? */
|
|
goto lookupNext;
|
|
}
|
|
newVirtY = p->VDisplay;
|
|
}
|
|
|
|
/*
|
|
* If virtual resolution is to be increased, revalidate it.
|
|
*/
|
|
if ((virtX != newVirtX) || (virtY != newVirtY)) {
|
|
if (linePitches != NULL) {
|
|
newLinePitch = -1;
|
|
for (i = 0; linePitches[i] != 0; i++) {
|
|
if ((linePitches[i] >= newVirtX) &&
|
|
(linePitches[i] >= linePitch) &&
|
|
(linePitches[i] ==
|
|
scanLineWidth(newVirtX, newVirtY, linePitches[i],
|
|
apertureSize, BankFormat, pitchInc))) {
|
|
newLinePitch = linePitches[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (linePitch < minPitch)
|
|
linePitch = minPitch;
|
|
newLinePitch = scanLineWidth(newVirtX, newVirtY, linePitch,
|
|
apertureSize, BankFormat,
|
|
pitchInc);
|
|
}
|
|
if ((newLinePitch < minPitch) || (newLinePitch > maxPitch)) {
|
|
p->status = MODE_BAD_WIDTH;
|
|
goto lookupNext;
|
|
}
|
|
|
|
/*
|
|
* Check that the pixel area required by the new virtual height
|
|
* and line pitch isn't too large.
|
|
*/
|
|
if (!xf86CheckModeSize(scrp, newLinePitch, newVirtX, newVirtY)) {
|
|
p->status = MODE_MEM_VIRT;
|
|
goto lookupNext;
|
|
}
|
|
}
|
|
|
|
if (scrp->ValidMode) {
|
|
/*
|
|
* Give the driver a final say, passing it the proposed virtual
|
|
* geometry.
|
|
*/
|
|
scrp->virtualX = newVirtX;
|
|
scrp->virtualY = newVirtY;
|
|
scrp->displayWidth = newLinePitch;
|
|
p->status = (scrp->ValidMode) (scrp, p, FALSE,
|
|
MODECHECK_FINAL);
|
|
|
|
if (p->status != MODE_OK) {
|
|
goto lookupNext;
|
|
}
|
|
}
|
|
|
|
/* Mode has passed all the tests */
|
|
virtX = newVirtX;
|
|
virtY = newVirtY;
|
|
linePitch = newLinePitch;
|
|
p->status = MODE_OK;
|
|
numModes++;
|
|
}
|
|
|
|
/*
|
|
* If we estimated the virtual size above, we may have filtered away all
|
|
* the modes that maximally match that size; scan again to find out and
|
|
* fix up if so.
|
|
*/
|
|
if (inferred_virtual) {
|
|
int vx = 0, vy = 0;
|
|
|
|
for (p = scrp->modes; p; p = p->next) {
|
|
if (p->HDisplay > vx && p->VDisplay > vy) {
|
|
vx = p->HDisplay;
|
|
vy = p->VDisplay;
|
|
}
|
|
}
|
|
if (vx < virtX || vy < virtY) {
|
|
const int types[] = {
|
|
M_T_BUILTIN | M_T_PREFERRED,
|
|
M_T_BUILTIN,
|
|
M_T_DRIVER | M_T_PREFERRED,
|
|
M_T_DRIVER,
|
|
0
|
|
};
|
|
const int ntypes = ARRAY_SIZE(types);
|
|
int n;
|
|
|
|
/*
|
|
* We did not find the estimated virtual size. So now we want to
|
|
* find the largest mode available, but we want to search in the
|
|
* modes in the order of "types" listed above.
|
|
*/
|
|
for (n = 0; n < ntypes; n++) {
|
|
int type = types[n];
|
|
|
|
vx = 0;
|
|
vy = 0;
|
|
for (p = scrp->modes; p; p = p->next) {
|
|
/* scan through the modes in the sort order above */
|
|
if ((p->type & type) != type)
|
|
continue;
|
|
if (p->HDisplay > vx && p->VDisplay > vy) {
|
|
vx = p->HDisplay;
|
|
vy = p->VDisplay;
|
|
}
|
|
}
|
|
if (vx && vy)
|
|
/* Found one */
|
|
break;
|
|
}
|
|
xf86DrvMsg(scrp->scrnIndex, X_WARNING,
|
|
"Shrinking virtual size estimate from %dx%d to %dx%d\n",
|
|
virtX, virtY, vx, vy);
|
|
virtX = _VIRTUALX(vx);
|
|
virtY = vy;
|
|
for (p = scrp->modes; p; p = p->next) {
|
|
if (numModes > 0) {
|
|
if (p->HDisplay > virtX)
|
|
p->status = MODE_VIRTUAL_X;
|
|
if (p->VDisplay > virtY)
|
|
p->status = MODE_VIRTUAL_Y;
|
|
if (p->status != MODE_OK) {
|
|
numModes--;
|
|
printModeRejectMessage(scrp->scrnIndex, p, p->status);
|
|
}
|
|
}
|
|
}
|
|
if (linePitches != NULL) {
|
|
for (i = 0; linePitches[i] != 0; i++) {
|
|
if ((linePitches[i] >= virtX) &&
|
|
(linePitches[i] ==
|
|
scanLineWidth(virtX, virtY, linePitches[i],
|
|
apertureSize, BankFormat, pitchInc))) {
|
|
linePitch = linePitches[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
linePitch = scanLineWidth(virtX, virtY, minPitch,
|
|
apertureSize, BankFormat, pitchInc);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Update the ScrnInfoRec parameters */
|
|
|
|
scrp->virtualX = virtX;
|
|
scrp->virtualY = virtY;
|
|
scrp->displayWidth = linePitch;
|
|
|
|
if (numModes <= 0)
|
|
return 0;
|
|
|
|
/* Make the mode list into a circular list by joining up the ends */
|
|
p = scrp->modes;
|
|
while (p->next != NULL)
|
|
p = p->next;
|
|
/* p is now the last mode on the list */
|
|
p->next = scrp->modes;
|
|
scrp->modes->prev = p;
|
|
|
|
if (minHeight > 0 && virtY < minHeight) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_ERROR,
|
|
"Virtual height (%d) is too small for the hardware "
|
|
"(min %d)\n", virtY, minHeight);
|
|
return -1;
|
|
}
|
|
|
|
return numModes;
|
|
}
|
|
|
|
/*
|
|
* xf86DeleteMode
|
|
*
|
|
* This function removes a mode from a list of modes.
|
|
*
|
|
* There are different types of mode lists:
|
|
*
|
|
* - singly linked linear lists, ending in NULL
|
|
* - doubly linked linear lists, starting and ending in NULL
|
|
* - doubly linked circular lists
|
|
*
|
|
*/
|
|
|
|
void
|
|
xf86DeleteMode(DisplayModePtr * modeList, DisplayModePtr mode)
|
|
{
|
|
/* Catch the easy/insane cases */
|
|
if (modeList == NULL || *modeList == NULL || mode == NULL)
|
|
return;
|
|
|
|
/* If the mode is at the start of the list, move the start of the list */
|
|
if (*modeList == mode)
|
|
*modeList = mode->next;
|
|
|
|
/* If mode is the only one on the list, set the list to NULL */
|
|
if ((mode == mode->prev) && (mode == mode->next)) {
|
|
*modeList = NULL;
|
|
}
|
|
else {
|
|
if ((mode->prev != NULL) && (mode->prev->next == mode))
|
|
mode->prev->next = mode->next;
|
|
if ((mode->next != NULL) && (mode->next->prev == mode))
|
|
mode->next->prev = mode->prev;
|
|
}
|
|
|
|
free((void *) mode->name);
|
|
free(mode);
|
|
}
|
|
|
|
/*
|
|
* xf86PruneDriverModes
|
|
*
|
|
* Remove modes from the driver's mode list which have been marked as
|
|
* invalid.
|
|
*/
|
|
|
|
void
|
|
xf86PruneDriverModes(ScrnInfoPtr scrp)
|
|
{
|
|
DisplayModePtr first, p, n;
|
|
|
|
p = scrp->modes;
|
|
if (p == NULL)
|
|
return;
|
|
|
|
do {
|
|
if (!(first = scrp->modes))
|
|
return;
|
|
n = p->next;
|
|
if (p->status != MODE_OK) {
|
|
xf86DeleteMode(&(scrp->modes), p);
|
|
}
|
|
p = n;
|
|
} while (p != NULL && p != first);
|
|
|
|
/* modePool is no longer needed, turf it */
|
|
while (scrp->modePool) {
|
|
/*
|
|
* A modePool mode's prev field is used to hold a pointer to the
|
|
* member of the scrp->modes list for which a match was considered.
|
|
* Clear that pointer first, otherwise xf86DeleteMode might get
|
|
* confused
|
|
*/
|
|
scrp->modePool->prev = NULL;
|
|
xf86DeleteMode(&scrp->modePool, scrp->modePool);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* xf86SetCrtcForModes
|
|
*
|
|
* Goes through the screen's mode list, and initialises the Crtc
|
|
* parameters for each mode. The initialisation includes adjustments
|
|
* for interlaced and double scan modes.
|
|
*/
|
|
void
|
|
xf86SetCrtcForModes(ScrnInfoPtr scrp, int adjustFlags)
|
|
{
|
|
DisplayModePtr p;
|
|
|
|
/*
|
|
* Store adjustFlags for use with the VidMode extension. There is an
|
|
* implicit assumption here that SetCrtcForModes is called once.
|
|
*/
|
|
scrp->adjustFlags = adjustFlags;
|
|
|
|
p = scrp->modes;
|
|
if (p == NULL)
|
|
return;
|
|
|
|
do {
|
|
xf86SetModeCrtc(p, adjustFlags);
|
|
DebugF("%sMode %s: %d (%d) %d %d (%d) %d %d (%d) %d %d (%d) %d\n",
|
|
(p->type & M_T_DEFAULT) ? "Default " : "",
|
|
p->name, p->CrtcHDisplay, p->CrtcHBlankStart,
|
|
p->CrtcHSyncStart, p->CrtcHSyncEnd, p->CrtcHBlankEnd,
|
|
p->CrtcHTotal, p->CrtcVDisplay, p->CrtcVBlankStart,
|
|
p->CrtcVSyncStart, p->CrtcVSyncEnd, p->CrtcVBlankEnd,
|
|
p->CrtcVTotal);
|
|
p = p->next;
|
|
} while (p != NULL && p != scrp->modes);
|
|
}
|
|
|
|
void
|
|
xf86PrintModes(ScrnInfoPtr scrp)
|
|
{
|
|
DisplayModePtr p;
|
|
float hsync, refresh = 0;
|
|
const char *desc, *desc2, *prefix, *uprefix;
|
|
|
|
if (scrp == NULL)
|
|
return;
|
|
|
|
xf86DrvMsg(scrp->scrnIndex, X_INFO, "Virtual size is %dx%d (pitch %d)\n",
|
|
scrp->virtualX, scrp->virtualY, scrp->displayWidth);
|
|
|
|
p = scrp->modes;
|
|
if (p == NULL)
|
|
return;
|
|
|
|
do {
|
|
desc = desc2 = "";
|
|
hsync = xf86ModeHSync(p);
|
|
refresh = xf86ModeVRefresh(p);
|
|
if (p->Flags & V_INTERLACE) {
|
|
desc = " (I)";
|
|
}
|
|
if (p->Flags & V_DBLSCAN) {
|
|
desc = " (D)";
|
|
}
|
|
if (p->VScan > 1) {
|
|
desc2 = " (VScan)";
|
|
}
|
|
if (p->type & M_T_BUILTIN)
|
|
prefix = "Built-in mode";
|
|
else if (p->type & M_T_DEFAULT)
|
|
prefix = "Default mode";
|
|
else if (p->type & M_T_DRIVER)
|
|
prefix = "Driver mode";
|
|
else
|
|
prefix = "Mode";
|
|
if (p->type & M_T_USERDEF)
|
|
uprefix = "*";
|
|
else
|
|
uprefix = " ";
|
|
if (hsync == 0 || refresh == 0) {
|
|
if (p->name)
|
|
xf86DrvMsg(scrp->scrnIndex, X_CONFIG,
|
|
"%s%s \"%s\"\n", uprefix, prefix, p->name);
|
|
else
|
|
xf86DrvMsg(scrp->scrnIndex, X_PROBED,
|
|
"%s%s %dx%d (unnamed)\n",
|
|
uprefix, prefix, p->HDisplay, p->VDisplay);
|
|
}
|
|
else if (p->Clock == p->SynthClock) {
|
|
xf86DrvMsg(scrp->scrnIndex, X_CONFIG,
|
|
"%s%s \"%s\": %.1f MHz, %.1f kHz, %.1f Hz%s%s\n",
|
|
uprefix, prefix, p->name, p->Clock / 1000.0,
|
|
hsync, refresh, desc, desc2);
|
|
}
|
|
else {
|
|
xf86DrvMsg(scrp->scrnIndex, X_CONFIG,
|
|
"%s%s \"%s\": %.1f MHz (scaled from %.1f MHz), "
|
|
"%.1f kHz, %.1f Hz%s%s\n",
|
|
uprefix, prefix, p->name, p->Clock / 1000.0,
|
|
p->SynthClock / 1000.0, hsync, refresh, desc, desc2);
|
|
}
|
|
if (hsync != 0 && refresh != 0)
|
|
xf86PrintModeline(scrp->scrnIndex, p);
|
|
p = p->next;
|
|
} while (p != NULL && p != scrp->modes);
|
|
}
|