vidix: drop VIDIX support

By now VIDIX is too obscure to justify the amount of code and
complexity it requires in the sources. Although there is no pressing
need to drop it just now from a code point of view, I'll rather remove
it before release than release with VIDIX support and then drop it
later.

Some of the manpage mentions of VIDIX were in "this option supported
for these VOs" lists that looked outdated and failed to mention vdpau
for example. Replace such incorrect lists with a generic "not
supported for all VOs" mention.

1 files changed, 0 insertions, 694 deletions

diff --git a/vidix/sis_bridge.c b/vidix/sis_bridge.c
deleted file mode 100644
index 265bce5fd3..0000000000
--- a/vidix/sis_bridge.c
+++ /dev/null
@@ -1,694 +0,0 @@
-/*
- * VIDIX driver for SiS chipsets.
- * Video bridge detection for SiS 300 and 310/325 series.
- *
- * Copyright (C) 2003 Jake Page, Sugar Media
- * Based on SiS Xv driver
- * Copyright 2002-2003 by Thomas Winischhofer, Vienna, Austria
- *
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "dha.h"
-#include "sis_bridge.h"
-#include "sis_regs.h"
-#include "sis_defs.h"
-
-
-static void sis_ddc2_delay(unsigned short delaytime)
-{
-    unsigned short i;
-    int temp;
-
-    for (i = 0; i < delaytime; i++) {
-	inSISIDXREG(SISSR, 0x05, temp);
-    }
-}
-
-
-static int sis_do_sense(int tempbl, int tempbh, int tempcl, int tempch)
-{
-    int temp;
-
-    outSISIDXREG(SISPART4, 0x11, tempbl);
-    temp = tempbh | tempcl;
-    setSISIDXREG(SISPART4, 0x10, 0xe0, temp);
-    //usleep(200000);
-    sis_ddc2_delay(0x1000);
-    tempch &= 0x7f;
-    inSISIDXREG(SISPART4, 0x03, temp);
-    temp ^= 0x0e;
-    temp &= tempch;
-    return temp == tempch;
-}
-
-
-/* sense connected devices on 30x bridge */
-static void sis_sense_30x(void)
-{
-    unsigned char backupP4_0d, backupP2_00, biosflag;
-    unsigned char testsvhs_tempbl, testsvhs_tempbh;
-    unsigned char testsvhs_tempcl, testsvhs_tempch;
-    unsigned char testcvbs_tempbl, testcvbs_tempbh;
-    unsigned char testcvbs_tempcl, testcvbs_tempch;
-    unsigned char testvga2_tempbl, testvga2_tempbh;
-    unsigned char testvga2_tempcl, testvga2_tempch;
-    int myflag, result = 0, i, j, haveresult;
-
-    inSISIDXREG(SISPART4, 0x0d, backupP4_0d);
-    outSISIDXREG(SISPART4, 0x0d, (backupP4_0d | 0x04));
-
-    inSISIDXREG(SISPART2, 0x00, backupP2_00);
-    outSISIDXREG(SISPART2, 0x00, (backupP2_00 | 0x1c));
-
-    sis_do_sense(0, 0, 0, 0);
-
-    if (sis_vga_engine == SIS_300_VGA) {
-	    testvga2_tempbh = 0x00;
-	    testvga2_tempbl = 0xd1;
-	    testsvhs_tempbh = 0x00;
-	    testsvhs_tempbl = 0xb9;
-	    testcvbs_tempbh = 0x00;
-	    testcvbs_tempbl = 0xb3;
-	    biosflag = 0;
-
-	if (sis_vbflags & (VB_301B | VB_302B | VB_301LV | VB_302LV)) {
-	    testvga2_tempbh = 0x01;
-	    testvga2_tempbl = 0x90;
-	    testsvhs_tempbh = 0x01;
-	    testsvhs_tempbl = 0x6b;
-	    testcvbs_tempbh = 0x01;
-	    testcvbs_tempbl = 0x74;
-	}
-	inSISIDXREG(SISPART4, 0x01, myflag);
-	if (myflag & 0x04) {
-	    testvga2_tempbh = 0x00;
-	    testvga2_tempbl = 0xfd;
-	    testsvhs_tempbh = 0x00;
-	    testsvhs_tempbl = 0xdd;
-	    testcvbs_tempbh = 0x00;
-	    testcvbs_tempbl = 0xee;
-	}
-	testvga2_tempch = 0x0e;
-	testvga2_tempcl = 0x08;
-	testsvhs_tempch = 0x06;
-	testsvhs_tempcl = 0x04;
-	testcvbs_tempch = 0x08;
-	testcvbs_tempcl = 0x04;
-
-	if (sis_device_id == DEVICE_SIS_300) {
-	    inSISIDXREG(SISSR, 0x3b, myflag);
-	    if (!(myflag & 0x01)) {
-		testvga2_tempbh = 0x00;
-		testvga2_tempbl = 0x00;
-		testvga2_tempch = 0x00;
-		testvga2_tempcl = 0x00;
-	    }
-	}
-    } else {
-	    testvga2_tempbh = 0x00;
-	    testvga2_tempbl = 0xd1;
-	    testsvhs_tempbh = 0x00;
-	    testsvhs_tempbl = 0xb9;
-	    testcvbs_tempbh = 0x00;
-	    testcvbs_tempbl = 0xb3;
-	    biosflag = 0;
-
-	if (sis_vbflags & (VB_301B | VB_302B | VB_301LV | VB_302LV)) {
-		if (sis_vbflags & (VB_301B | VB_302B)) {
-		    testvga2_tempbh = 0x01;
-		    testvga2_tempbl = 0x90;
-		    testsvhs_tempbh = 0x01;
-		    testsvhs_tempbl = 0x6b;
-		    testcvbs_tempbh = 0x01;
-		    testcvbs_tempbl = 0x74;
-		} else {
-		    testvga2_tempbh = 0x00;
-		    testvga2_tempbl = 0x00;
-		    testsvhs_tempbh = 0x02;
-		    testsvhs_tempbl = 0x00;
-		    testcvbs_tempbh = 0x01;
-		    testcvbs_tempbl = 0x00;
-		}
-	}
-	if (sis_vbflags & (VB_301 | VB_301B | VB_302B)) {
-	    inSISIDXREG(SISPART4, 0x01, myflag);
-	    if (myflag & 0x04) {
-		testvga2_tempbh = 0x00;
-		testvga2_tempbl = 0xfd;
-		testsvhs_tempbh = 0x00;
-		testsvhs_tempbl = 0xdd;
-		testcvbs_tempbh = 0x00;
-		testcvbs_tempbl = 0xee;
-	    }
-	}
-	if (sis_vbflags & (VB_301LV | VB_302LV)) {
-	    /* TW: No VGA2 or SCART on LV bridges */
-	    testvga2_tempbh = 0x00;
-	    testvga2_tempbl = 0x00;
-	    testvga2_tempch = 0x00;
-	    testvga2_tempcl = 0x00;
-	    testsvhs_tempch = 0x04;
-	    testsvhs_tempcl = 0x08;
-	    testcvbs_tempch = 0x08;
-	    testcvbs_tempcl = 0x08;
-	} else {
-	    testvga2_tempch = 0x0e;
-	    testvga2_tempcl = 0x08;
-	    testsvhs_tempch = 0x06;
-	    testsvhs_tempcl = 0x04;
-	    testcvbs_tempch = 0x08;
-	    testcvbs_tempcl = 0x04;
-	}
-    }
-
-    /* XXX: ?? andSISIDXREG(SISCR, 0x32, ~0x14); */
-    /* pSiS->postVBCR32 &= ~0x14; */
-
-    /* scan for VGA2/SCART */
-    if (testvga2_tempch || testvga2_tempcl ||
-	testvga2_tempbh || testvga2_tempbl) {
-
-	haveresult = 0;
-	for (j = 0; j < 10; j++) {
-	    result = 0;
-	    for (i = 0; i < 3; i++) {
-		if (sis_do_sense(testvga2_tempbl, testvga2_tempbh,
-				 testvga2_tempcl, testvga2_tempch))
-		    result++;
-	    }
-	    if ((result == 0) || (result >= 2))
-		break;
-	}
-	if (result) {
-	    if (biosflag & 0x01) {
-		if (sis_verbose > 1) {
-		    printf
-			("[SiS] SiS30x: Detected TV connected to SCART output\n");
-		}
-		sis_vbflags |= TV_SCART;
-		orSISIDXREG(SISCR, 0x32, 0x04);
-		/*pSiS->postVBCR32 |= 0x04; */
-	    } else {
-		if (sis_verbose > 1) {
-		    printf
-			("[SiS] SiS30x: Detected secondary VGA connection\n");
-		}
-		sis_vbflags |= VGA2_CONNECTED;
-		orSISIDXREG(SISCR, 0x32, 0x10);
-		/*pSiS->postVBCR32 |= 0x10; */
-	    }
-	}
-    }
-
-    /* scanning for TV */
-
-    /* XXX: ?? andSISIDXREG(SISCR, 0x32, ~0x03); */
-    /* pSiS->postVBCR32 &= ~0x03; */
-
-    result = sis_do_sense(testsvhs_tempbl, testsvhs_tempbh,
-			  testsvhs_tempcl, testsvhs_tempch);
-
-
-    haveresult = 0;
-    for (j = 0; j < 10; j++) {
-	result = 0;
-	for (i = 0; i < 3; i++) {
-	    if (sis_do_sense(testsvhs_tempbl, testsvhs_tempbh,
-			     testsvhs_tempcl, testsvhs_tempch))
-		result++;
-	}
-	if ((result == 0) || (result >= 2))
-	    break;
-    }
-    if (result) {
-	if (sis_verbose > 1) {
-	    printf
-		("[SiS] SiS30x: Detected TV connected to SVIDEO output\n");
-	}
-	/* TW: So we can be sure that there IS a SVIDEO output */
-	sis_vbflags |= TV_SVIDEO;
-	orSISIDXREG(SISCR, 0x32, 0x02);
-	//pSiS->postVBCR32 |= 0x02;
-    }
-
-    if ((biosflag & 0x02) || (!(result))) {
-	haveresult = 0;
-	for (j = 0; j < 10; j++) {
-	    result = 0;
-	    for (i = 0; i < 3; i++) {
-		if (sis_do_sense(testcvbs_tempbl, testcvbs_tempbh,
-				 testcvbs_tempcl, testcvbs_tempch))
-		    result++;
-	    }
-	    if ((result == 0) || (result >= 2))
-		break;
-	}
-	if (result) {
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] SiS30x: Detected TV connected to COMPOSITE output\n");
-	    }
-	    sis_vbflags |= TV_AVIDEO;
-	    orSISIDXREG(SISCR, 0x32, 0x01);
-	    //pSiS->postVBCR32 |= 0x01;
-	}
-    }
-
-    sis_do_sense(0, 0, 0, 0);
-
-    outSISIDXREG(SISPART2, 0x00, backupP2_00);
-    outSISIDXREG(SISPART4, 0x0d, backupP4_0d);
-}
-
-
-static void sis_detect_crt1(void)
-{
-    unsigned char CR32;
-    unsigned char CRT1Detected = 0;
-    unsigned char OtherDevices = 0;
-
-    if (!(sis_vbflags & VB_VIDEOBRIDGE)) {
-	sis_crt1_off = 0;
-	return;
-    }
-
-    inSISIDXREG(SISCR, 0x32, CR32);
-
-    if (CR32 & 0x20)
-	CRT1Detected = 1;
-    if (CR32 & 0x5F)
-	OtherDevices = 1;
-
-    if (sis_crt1_off == -1) {
-	if (!CRT1Detected) {
-	    /* BIOS detected no CRT1. */
-	    /* If other devices exist, switch it off */
-	    if (OtherDevices)
-		sis_crt1_off = 1;
-	    else
-		sis_crt1_off = 0;
-	} else {
-	    /* BIOS detected CRT1, leave/switch it on */
-	    sis_crt1_off = 0;
-	}
-    }
-    if (sis_verbose > 0) {
-	printf("[SiS] %sCRT1 connection detected\n",
-	       sis_crt1_off ? "No " : "");
-    }
-}
-
-static void sis_detect_tv(void)
-{
-    unsigned char SR16, SR38, CR32, CR38 = 0, CR79;
-    int temp = 0;
-
-    if (!(sis_vbflags & VB_VIDEOBRIDGE))
-	return;
-
-    inSISIDXREG(SISCR, 0x32, CR32);
-    inSISIDXREG(SISSR, 0x16, SR16);
-    inSISIDXREG(SISSR, 0x38, SR38);
-    switch (sis_vga_engine) {
-    case SIS_300_VGA:
-	if (sis_device_id == DEVICE_SIS_630_VGA)
-	    temp = 0x35;
-	break;
-    case SIS_315_VGA:
-	temp = 0x38;
-	break;
-    }
-    if (temp) {
-	inSISIDXREG(SISCR, temp, CR38);
-    }
-
-    if (CR32 & 0x47)
-	sis_vbflags |= CRT2_TV;
-
-    if (CR32 & 0x04)
-	sis_vbflags |= TV_SCART;
-    else if (CR32 & 0x02)
-	sis_vbflags |= TV_SVIDEO;
-    else if (CR32 & 0x01)
-	sis_vbflags |= TV_AVIDEO;
-    else if (CR32 & 0x40)
-	sis_vbflags |= (TV_SVIDEO | TV_HIVISION);
-    else if ((CR38 & 0x04) && (sis_vbflags & (VB_301LV | VB_302LV)))
-	sis_vbflags |= TV_HIVISION_LV;
-    else if ((CR38 & 0x04) && (sis_vbflags & VB_CHRONTEL))
-	sis_vbflags |= (TV_CHSCART | TV_PAL);
-    else if ((CR38 & 0x08) && (sis_vbflags & VB_CHRONTEL))
-	sis_vbflags |= (TV_CHHDTV | TV_NTSC);
-
-    if (sis_vbflags & (TV_SCART | TV_SVIDEO | TV_AVIDEO | TV_HIVISION)) {
-	if (sis_vga_engine == SIS_300_VGA) {
-	    /* TW: Should be SR38 here as well, but this
-	     *     does not work. Looks like a BIOS bug (2.04.5c).
-	     */
-	    if (SR16 & 0x20)
-		sis_vbflags |= TV_PAL;
-	    else
-		sis_vbflags |= TV_NTSC;
-	} else if ((sis_device_id == DEVICE_SIS_550_VGA)) {
-	    inSISIDXREG(SISCR, 0x79, CR79);
-	    if (CR79 & 0x08) {
-		inSISIDXREG(SISCR, 0x79, CR79);
-		CR79 >>= 5;
-	    }
-	    if (CR79 & 0x01) {
-		sis_vbflags |= TV_PAL;
-		if (CR38 & 0x40)
-		    sis_vbflags |= TV_PALM;
-		else if (CR38 & 0x80)
-		    sis_vbflags |= TV_PALN;
-	    } else
-		sis_vbflags |= TV_NTSC;
-	} else if ((sis_device_id == DEVICE_SIS_650_VGA)) {
-	    inSISIDXREG(SISCR, 0x79, CR79);
-	    if (CR79 & 0x20) {
-		sis_vbflags |= TV_PAL;
-		if (CR38 & 0x40)
-		    sis_vbflags |= TV_PALM;
-		else if (CR38 & 0x80)
-		    sis_vbflags |= TV_PALN;
-	    } else
-		sis_vbflags |= TV_NTSC;
-	} else {		/* 315, 330 */
-	    if (SR38 & 0x01) {
-		sis_vbflags |= TV_PAL;
-		if (CR38 & 0x40)
-		    sis_vbflags |= TV_PALM;
-		else if (CR38 & 0x80)
-		    sis_vbflags |= TV_PALN;
-	    } else
-		sis_vbflags |= TV_NTSC;
-	}
-    }
-
-    if (sis_vbflags &
-	(TV_SCART | TV_SVIDEO | TV_AVIDEO | TV_HIVISION | TV_CHSCART |
-	 TV_CHHDTV)) {
-	if (sis_verbose > 0) {
-	    printf("[SiS] %sTV standard %s\n",
-		   (sis_vbflags & (TV_CHSCART | TV_CHHDTV)) ? "Using " :
-		   "Detected default ",
-		   (sis_vbflags & TV_NTSC) ? ((sis_vbflags & TV_CHHDTV) ?
-					      "480i HDTV" : "NTSC")
-		   : ((sis_vbflags & TV_PALM) ? "PALM"
-		      : ((sis_vbflags & TV_PALN) ? "PALN" : "PAL")));
-	}
-    }
-
-}
-
-
-static void sis_detect_crt2(void)
-{
-    unsigned char CR32;
-
-    if (!(sis_vbflags & VB_VIDEOBRIDGE))
-	return;
-
-    /* CRT2-VGA not supported on LVDS and 30xLV */
-    if (sis_vbflags & (VB_LVDS | VB_301LV | VB_302LV))
-	return;
-
-    inSISIDXREG(SISCR, 0x32, CR32);
-
-    if (CR32 & 0x10)
-	sis_vbflags |= CRT2_VGA;
-}
-
-
-/* Preinit: detect video bridge and sense connected devs */
-static void sis_detect_video_bridge(void)
-{
-    int temp, temp1, temp2;
-
-
-    sis_vbflags = 0;
-
-    if (sis_vga_engine != SIS_300_VGA && sis_vga_engine != SIS_315_VGA)
-	return;
-
-    inSISIDXREG(SISPART4, 0x00, temp);
-    temp &= 0x0F;
-    if (temp == 1) {
-	inSISIDXREG(SISPART4, 0x01, temp1);
-	temp1 &= 0xff;
-	if (temp1 >= 0xE0) {
-	    sis_vbflags |= VB_302LV;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_302LV;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS302LV video bridge (ID 1; Revision 0x%x)\n",
-		     temp1);
-	    }
-
-	} else if (temp1 >= 0xD0) {
-	    sis_vbflags |= VB_301LV;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_301LV;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS301LV video bridge (ID 1; Revision 0x%x)\n",
-		     temp1);
-	    }
-	} else if (temp1 >= 0xB0) {
-	    sis_vbflags |= VB_301B;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_301B;
-	    inSISIDXREG(SISPART4, 0x23, temp2);
-	    if (!(temp2 & 0x02))
-		sis_vbflags |= VB_30xBDH;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS301B%s video bridge (Revision 0x%x)\n",
-		     (temp2 & 0x02) ? "" : " (DH)", temp1);
-	    }
-	} else {
-	    sis_vbflags |= VB_301;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_301;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS301 video bridge (Revision 0x%x)\n",
-		     temp1);
-	    }
-	}
-
-	sis_sense_30x();
-
-    } else if (temp == 2) {
-
-	inSISIDXREG(SISPART4, 0x01, temp1);
-	temp1 &= 0xff;
-	if (temp1 >= 0xE0) {
-	    sis_vbflags |= VB_302LV;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_302LV;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS302LV video bridge (ID 2; Revision 0x%x)\n",
-		     temp1);
-	    }
-	} else if (temp1 >= 0xD0) {
-	    sis_vbflags |= VB_301LV;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_301LV;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS301LV video bridge (ID 2; Revision 0x%x)\n",
-		     temp1);
-	    }
-	} else {
-	    sis_vbflags |= VB_302B;
-	    //pSiS->sishw_ext.ujVBChipID = VB_CHIP_302B;
-	    inSISIDXREG(SISPART4, 0x23, temp2);
-	    if (!(temp & 0x02))
-		sis_vbflags |= VB_30xBDH;
-	    if (sis_verbose > 1) {
-		printf
-		    ("[SiS] Detected SiS302B%s video bridge (Revision 0x%x)\n",
-		     (temp2 & 0x02) ? "" : " (DH)", temp1);
-	    }
-	}
-
-	sis_sense_30x();
-
-    } else if (temp == 3) {
-	if (sis_verbose > 1) {
-	    printf("[SiS] Detected SiS303 video bridge - not supported\n");
-	}
-    } else {
-	/* big scary mess of code to handle unknown or Chrontel LVDS */
-	/* skipping it for now */
-	if (sis_verbose > 1) {
-	    printf
-		("[SiS] Detected Chrontel video bridge - not supported\n");
-	}
-    }
-
-    /* this is probably not relevant to video overlay driver... */
-    /* detects if brdige uses LCDA for low res text modes */
-    if (sis_vga_engine == SIS_315_VGA) {
-	if (sis_vbflags & (VB_302B | VB_301LV | VB_302LV)) {
-		inSISIDXREG(SISCR, 0x34, temp);
-		if (temp <= 0x13) {
-		    inSISIDXREG(SISCR, 0x38, temp);
-		    if ((temp & 0x03) == 0x03) {
-			//pSiS->SiS_Pr->SiS_UseLCDA = TRUE;
-			sis_vbflags |= VB_USELCDA;
-		    } else {
-			inSISIDXREG(SISCR, 0x30, temp);
-			if (temp & 0x20) {
-			    inSISIDXREG(SISPART1, 0x13, temp);
-			    if (temp & 0x40) {
-				//pSiS->SiS_Pr->SiS_UseLCDA = TRUE;
-				sis_vbflags |= VB_USELCDA;
-			    }
-			}
-		    }
-		}
-	    if (sis_vbflags & VB_USELCDA) {
-		/* printf("Bridge uses LCDA for low resolution and text modes\n"); */
-	    }
-	}
-    }
-
-
-}
-
-
-/* detect video bridge type and sense connected devices */
-void sis_init_video_bridge(void)
-{
-
-    sis_detect_video_bridge();
-
-    sis_detect_crt1();
-    //sis_detect_lcd();
-    sis_detect_tv();
-    sis_detect_crt2();
-
-    sis_detected_crt2_devices =
-	sis_vbflags & (CRT2_LCD | CRT2_TV | CRT2_VGA);
-
-    // force crt2 type
-    if (sis_force_crt2_type == CRT2_DEFAULT) {
-	if (sis_vbflags & CRT2_VGA)
-	    sis_force_crt2_type = CRT2_VGA;
-	else if (sis_vbflags & CRT2_LCD)
-	    sis_force_crt2_type = CRT2_LCD;
-	else if (sis_vbflags & CRT2_TV)
-	    sis_force_crt2_type = CRT2_TV;
-    }
-
-    switch (sis_force_crt2_type) {
-    case CRT2_TV:
-	sis_vbflags = sis_vbflags & ~(CRT2_LCD | CRT2_VGA);
-	if (sis_vbflags & VB_VIDEOBRIDGE)
-	    sis_vbflags = sis_vbflags | CRT2_TV;
-	else
-	    sis_vbflags = sis_vbflags & ~(CRT2_TV);
-	break;
-    case CRT2_LCD:
-	sis_vbflags = sis_vbflags & ~(CRT2_TV | CRT2_VGA);
-	if ((sis_vbflags & VB_VIDEOBRIDGE) /* XXX: && (pSiS->VBLCDFlags) */
-	    )
-	    sis_vbflags = sis_vbflags | CRT2_LCD;
-	else {
-	    sis_vbflags = sis_vbflags & ~(CRT2_LCD);
-	    if (sis_verbose > 0) {
-		printf
-		    ("[SiS] Can't force CRT2 to LCD, no panel detected\n");
-	    }
-	}
-	break;
-    case CRT2_VGA:
-	if (sis_vbflags & VB_LVDS) {
-	    if (sis_verbose > 0) {
-		printf("[SiS] LVDS does not support secondary VGA\n");
-	    }
-	    break;
-	}
-	if (sis_vbflags & (VB_301LV | VB_302LV)) {
-	    if (sis_verbose > 0) {
-		printf
-		    ("[SiS] SiS30xLV bridge does not support secondary VGA\n");
-	    }
-	    break;
-	}
-	sis_vbflags = sis_vbflags & ~(CRT2_TV | CRT2_LCD);
-	if (sis_vbflags & VB_VIDEOBRIDGE)
-	    sis_vbflags = sis_vbflags | CRT2_VGA;
-	else
-	    sis_vbflags = sis_vbflags & ~(CRT2_VGA);
-	break;
-    default:
-	sis_vbflags &= ~(CRT2_TV | CRT2_LCD | CRT2_VGA);
-    }
-
-    /* CRT2 gamma correction?? */
-
-    /* other force modes: */
-    /*  have a 'force tv type' (svideo, composite, scart) option? */
-    /*  have a 'force crt1 type' (to turn it off, etc??) */
-
-    /* TW: Check if CRT1 used (or needed; this eg. if no CRT2 detected) */
-    if (sis_vbflags & VB_VIDEOBRIDGE) {
-
-	/* TW: No CRT2 output? Then we NEED CRT1!
-	 *     We also need CRT1 if depth = 8 and bridge=LVDS|630+301B
-	 */
-	if ((!(sis_vbflags & (CRT2_VGA | CRT2_LCD | CRT2_TV))) || (	/*(pScrn->bitsPerPixel == 8) && */
-								      ((sis_vbflags & (VB_LVDS | VB_CHRONTEL)) || ((sis_vga_engine == SIS_300_VGA) && (sis_vbflags & VB_301B))))) {
-	    sis_crt1_off = 0;
-	}
-	/* TW: No CRT2 output? Then we can't use hw overlay on CRT2 */
-	if (!(sis_vbflags & (CRT2_VGA | CRT2_LCD | CRT2_TV)))
-	    sis_overlay_on_crt1 = 1;
-
-    } else {			/* TW: no video bridge? */
-
-	/* Then we NEED CRT1... */
-	sis_crt1_off = 0;
-	/* ... and can't use CRT2 for overlay output */
-	sis_overlay_on_crt1 = 1;
-    }
-
-    /* tvstandard options ? */
-
-    // determine using CRT1 or CRT2?
-    /* -> NO dualhead right now... */
-    if (sis_vbflags & DISPTYPE_DISP2) {
-	if (sis_crt1_off) {
-	    sis_vbflags |= VB_DISPMODE_SINGLE;
-	    /* TW: No CRT1? Then we use the video overlay on CRT2 */
-	    sis_overlay_on_crt1 = 0;
-	} else			/* TW: CRT1 and CRT2 - mirror or dual head ----- */
-	    sis_vbflags |= (VB_DISPMODE_MIRROR | DISPTYPE_CRT1);
-    } else {			/* TW: CRT1 only ------------------------------- */
-	sis_vbflags |= (VB_DISPMODE_SINGLE | DISPTYPE_CRT1);
-    }
-
-    if (sis_verbose > 0) {
-	printf("[SiS] Using hardware overlay on CRT%d\n",
-	       sis_overlay_on_crt1 ? 1 : 2);
-    }
-
-}