xf86modes.c

显驱动 Intel英特尔G45G43G41G35G33G31G965Q963Q965GM965系列显卡最新X.Org驱动2.4.0版For Linux

/*
 * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
 *
 * 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.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif

#include "xf86Modes.h"
#include "xf86Priv.h"

extern XF86ConfigPtr xf86configptr;

/**
 * @file this file contains symbols from xf86Mode.c and friends that are static
 * there but we still want to use.  We need to come up with better API here.
 */

#if XORG_VERSION_CURRENT <= XORG_VERSION_NUMERIC(7,2,99,2,0)
/**
 * Calculates the horizontal sync rate of a mode.
 *
 * Exact copy of xf86Mode.c's.
 */
_X_EXPORT double
xf86ModeHSync(DisplayModePtr mode)
{
    double hsync = 0.0;
    
    if (mode->HSync > 0.0)
	    hsync = mode->HSync;
    else if (mode->HTotal > 0)
	    hsync = (float)mode->Clock / (float)mode->HTotal;

    return hsync;
}

/**
 * Calculates the vertical refresh rate of a mode.
 *
 * Exact copy of xf86Mode.c's.
 */
_X_EXPORT double
xf86ModeVRefresh(DisplayModePtr mode)
{
    double refresh = 0.0;

    if (mode->VRefresh > 0.0)
	refresh = mode->VRefresh;
    else if (mode->HTotal > 0 && mode->VTotal > 0) {
	refresh = mode->Clock * 1000.0 / mode->HTotal / mode->VTotal;
	if (mode->Flags & V_INTERLACE)
	    refresh *= 2.0;
	if (mode->Flags & V_DBLSCAN)
	    refresh /= 2.0;
	if (mode->VScan > 1)
	    refresh /= (float)(mode->VScan);
    }
    return refresh;
}

_X_EXPORT int
xf86ModeWidth (DisplayModePtr mode, Rotation rotation)
{
    switch (rotation & 0xf) {
    case RR_Rotate_0:
    case RR_Rotate_180:
	return mode->HDisplay;
    case RR_Rotate_90:
    case RR_Rotate_270:
	return mode->VDisplay;
    default:
	return 0;
    }
}

_X_EXPORT int
xf86ModeHeight (DisplayModePtr mode, Rotation rotation)
{
    switch (rotation & 0xf) {
    case RR_Rotate_0:
    case RR_Rotate_180:
	return mode->VDisplay;
    case RR_Rotate_90:
    case RR_Rotate_270:
	return mode->HDisplay;
    default:
	return 0;
    }
}

/** Sets a default mode name of <width>x<height> on a mode. */
_X_EXPORT void
xf86SetModeDefaultName(DisplayModePtr mode)
{
    if (mode->name != NULL)
	xfree(mode->name);

    mode->name = XNFprintf("%dx%d", mode->HDisplay, mode->VDisplay);
}

/*
 * xf86SetModeCrtc
 *
 * Initialises the Crtc parameters for a mode.  The initialisation includes
 * adjustments for interlaced and double scan modes.
 *
 * Exact copy of xf86Mode.c's.
 */
_X_EXPORT void
xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
{
    if ((p == NULL) || ((p->type & M_T_CRTC_C) == M_T_BUILTIN))
	return;

    p->CrtcHDisplay             = p->HDisplay;
    p->CrtcHSyncStart           = p->HSyncStart;
    p->CrtcHSyncEnd             = p->HSyncEnd;
    p->CrtcHTotal               = p->HTotal;
    p->CrtcHSkew                = p->HSkew;
    p->CrtcVDisplay             = p->VDisplay;
    p->CrtcVSyncStart           = p->VSyncStart;
    p->CrtcVSyncEnd             = p->VSyncEnd;
    p->CrtcVTotal               = p->VTotal;
    if (p->Flags & V_INTERLACE) {
	if (adjustFlags & INTERLACE_HALVE_V) {
	    p->CrtcVDisplay         /= 2;
	    p->CrtcVSyncStart       /= 2;
	    p->CrtcVSyncEnd         /= 2;
	    p->CrtcVTotal           /= 2;
	}
	/* Force interlaced modes to have an odd VTotal */
	/* maybe we should only do this when INTERLACE_HALVE_V is set? */
	p->CrtcVTotal |= 1;
    }

    if (p->Flags & V_DBLSCAN) {
        p->CrtcVDisplay         *= 2;
        p->CrtcVSyncStart       *= 2;
        p->CrtcVSyncEnd         *= 2;
        p->CrtcVTotal           *= 2;
    }
    if (p->VScan > 1) {
        p->CrtcVDisplay         *= p->VScan;
        p->CrtcVSyncStart       *= p->VScan;
        p->CrtcVSyncEnd         *= p->VScan;
        p->CrtcVTotal           *= p->VScan;
    }
    p->CrtcVBlankStart = min(p->CrtcVSyncStart, p->CrtcVDisplay);
    p->CrtcVBlankEnd = max(p->CrtcVSyncEnd, p->CrtcVTotal);
    p->CrtcHBlankStart = min(p->CrtcHSyncStart, p->CrtcHDisplay);
    p->CrtcHBlankEnd = max(p->CrtcHSyncEnd, p->CrtcHTotal);

    p->CrtcHAdjusted = FALSE;
    p->CrtcVAdjusted = FALSE;
}

/**
 * Allocates and returns a copy of pMode, including pointers within pMode.
 */
_X_EXPORT DisplayModePtr
xf86DuplicateMode(DisplayModePtr pMode)
{
    DisplayModePtr pNew;

    pNew = xnfalloc(sizeof(DisplayModeRec));
    *pNew = *pMode;
    pNew->next = NULL;
    pNew->prev = NULL;
    if (pNew->name == NULL) {
	xf86SetModeDefaultName(pMode);
    } else {
	pNew->name = xnfstrdup(pMode->name);
    }

    return pNew;
}

/**
 * Duplicates every mode in the given list and returns a pointer to the first
 * mode.
 *
 * \param modeList doubly-linked mode list
 */
_X_EXPORT DisplayModePtr
xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList)
{
    DisplayModePtr first = NULL, last = NULL;
    DisplayModePtr mode;

    for (mode = modeList; mode != NULL; mode = mode->next) {
	DisplayModePtr new;

	new = xf86DuplicateMode(mode);

	/* Insert pNew into modeList */
	if (last) {
	    last->next = new;
	    new->prev = last;
	} else {
	    first = new;
	    new->prev = NULL;
	}
	new->next = NULL;
	last = new;
    }

    return first;
}

/**
 * Returns true if the given modes should program to the same timings.
 *
 * This doesn't use Crtc values, as it might be used on ModeRecs without the
 * Crtc values set.  So, it's assumed that the other numbers are enough.
 *
 * This isn't in xf86Modes.c, but it might deserve to be there.
 */
_X_EXPORT Bool
xf86ModesEqual(DisplayModePtr pMode1, DisplayModePtr pMode2)
{
     if (pMode1->Clock == pMode2->Clock &&
	 pMode1->HDisplay == pMode2->HDisplay &&
	 pMode1->HSyncStart == pMode2->HSyncStart &&
	 pMode1->HSyncEnd == pMode2->HSyncEnd &&
	 pMode1->HTotal == pMode2->HTotal &&
	 pMode1->HSkew == pMode2->HSkew &&
	 pMode1->VDisplay == pMode2->VDisplay &&
	 pMode1->VSyncStart == pMode2->VSyncStart &&
	 pMode1->VSyncEnd == pMode2->VSyncEnd &&
	 pMode1->VTotal == pMode2->VTotal &&
	 pMode1->VScan == pMode2->VScan &&
	 pMode1->Flags == pMode2->Flags)
     {
	return TRUE;
     } else {
	return FALSE;
     }
}

/* exact copy of xf86Mode.c */
static void
add(char **p, char *new)
{
    *p = xnfrealloc(*p, strlen(*p) + strlen(new) + 2);
    strcat(*p, " ");
    strcat(*p, new);
}

/**
 * Print out a modeline.
 *
 * Convenient VRefresh printing was added, though, compared to xf86Mode.c
 */
_X_EXPORT void
xf86PrintModeline(int scrnIndex,DisplayModePtr mode)
{
    char tmp[256];
    char *flags = xnfcalloc(1, 1);

    if (mode->HSkew) { 
	snprintf(tmp, 256, "hskew %i", mode->HSkew); 
	add(&flags, tmp);
    }
    if (mode->VScan) { 
	snprintf(tmp, 256, "vscan %i", mode->VScan); 
	add(&flags, tmp);
    }
    if (mode->Flags & V_INTERLACE) add(&flags, "interlace");
    if (mode->Flags & V_CSYNC) add(&flags, "composite");
    if (mode->Flags & V_DBLSCAN) add(&flags, "doublescan");
    if (mode->Flags & V_BCAST) add(&flags, "bcast");
    if (mode->Flags & V_PHSYNC) add(&flags, "+hsync");
    if (mode->Flags & V_NHSYNC) add(&flags, "-hsync");
    if (mode->Flags & V_PVSYNC) add(&flags, "+vsync");
    if (mode->Flags & V_NVSYNC) add(&flags, "-vsync");
    if (mode->Flags & V_PCSYNC) add(&flags, "+csync");
    if (mode->Flags & V_NCSYNC) add(&flags, "-csync");
#if 0
    if (mode->Flags & V_CLKDIV2) add(&flags, "vclk/2");
#endif
    xf86DrvMsg(scrnIndex, X_INFO,
		   "Modeline \"%s\"x%.01f  %6.2f  %i %i %i %i  %i %i %i %i%s "
		   "(%.01f kHz)\n",
		   mode->name, mode->VRefresh, mode->Clock/1000., mode->HDisplay,
		   mode->HSyncStart, mode->HSyncEnd, mode->HTotal,
		   mode->VDisplay, mode->VSyncStart, mode->VSyncEnd,
		   mode->VTotal, flags, xf86ModeHSync(mode));
    xfree(flags);
}
#endif /* XORG_VERSION_CURRENT <= 7.2.99.2 */

/**
 * Marks as bad any modes with unsupported flags.
 *
 * \param modeList doubly-linked or circular list of modes.
 * \param flags flags supported by the driver.
 *
 * \bug only V_INTERLACE and V_DBLSCAN are supported.  Is that enough?
 *
 * This is not in xf86Modes.c, but would be part of the proposed new API.
 */
_X_EXPORT void
xf86ValidateModesFlags(ScrnInfoPtr pScrn, DisplayModePtr modeList,