mirror of
https://github.com/mpv-player/mpv
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232f7407ee
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23066 b3059339-0415-0410-9bf9-f77b7e298cf2
694 lines
18 KiB
C
694 lines
18 KiB
C
/*
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* VIDIX driver for SiS chipsets.
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* Video bridge detection for SiS 300 and 310/325 series.
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* Copyright (C) 2003 Jake Page, Sugar Media.
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MPlayer; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Based on SiS Xv driver
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* Copyright 2002-2003 by Thomas Winischhofer, Vienna, Austria.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "dha.h"
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#include "sis_regs.h"
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#include "sis_defs.h"
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static void sis_ddc2_delay(unsigned short delaytime)
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{
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unsigned short i;
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int temp;
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for (i = 0; i < delaytime; i++) {
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inSISIDXREG(SISSR, 0x05, temp);
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}
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}
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static int sis_do_sense(int tempbl, int tempbh, int tempcl, int tempch)
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{
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int temp;
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outSISIDXREG(SISPART4, 0x11, tempbl);
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temp = tempbh | tempcl;
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setSISIDXREG(SISPART4, 0x10, 0xe0, temp);
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//usleep(200000);
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sis_ddc2_delay(0x1000);
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tempch &= 0x7f;
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inSISIDXREG(SISPART4, 0x03, temp);
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temp ^= 0x0e;
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temp &= tempch;
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return (temp == tempch);
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}
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/* sense connected devices on 30x bridge */
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static void sis_sense_30x(void)
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{
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unsigned char backupP4_0d, backupP2_00, biosflag;
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unsigned char testsvhs_tempbl, testsvhs_tempbh;
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unsigned char testsvhs_tempcl, testsvhs_tempch;
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unsigned char testcvbs_tempbl, testcvbs_tempbh;
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unsigned char testcvbs_tempcl, testcvbs_tempch;
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unsigned char testvga2_tempbl, testvga2_tempbh;
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unsigned char testvga2_tempcl, testvga2_tempch;
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int myflag, result = 0, i, j, haveresult;
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inSISIDXREG(SISPART4, 0x0d, backupP4_0d);
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outSISIDXREG(SISPART4, 0x0d, (backupP4_0d | 0x04));
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inSISIDXREG(SISPART2, 0x00, backupP2_00);
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outSISIDXREG(SISPART2, 0x00, (backupP2_00 | 0x1c));
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sis_do_sense(0, 0, 0, 0);
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if (sis_vga_engine == SIS_300_VGA) {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0xd1;
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testsvhs_tempbh = 0x00;
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testsvhs_tempbl = 0xb9;
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testcvbs_tempbh = 0x00;
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testcvbs_tempbl = 0xb3;
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biosflag = 0;
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if (sis_vbflags & (VB_301B | VB_302B | VB_301LV | VB_302LV)) {
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testvga2_tempbh = 0x01;
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testvga2_tempbl = 0x90;
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testsvhs_tempbh = 0x01;
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testsvhs_tempbl = 0x6b;
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testcvbs_tempbh = 0x01;
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testcvbs_tempbl = 0x74;
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}
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inSISIDXREG(SISPART4, 0x01, myflag);
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if (myflag & 0x04) {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0xfd;
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testsvhs_tempbh = 0x00;
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testsvhs_tempbl = 0xdd;
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testcvbs_tempbh = 0x00;
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testcvbs_tempbl = 0xee;
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}
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testvga2_tempch = 0x0e;
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testvga2_tempcl = 0x08;
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testsvhs_tempch = 0x06;
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testsvhs_tempcl = 0x04;
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testcvbs_tempch = 0x08;
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testcvbs_tempcl = 0x04;
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if (sis_device_id == DEVICE_SIS_300) {
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inSISIDXREG(SISSR, 0x3b, myflag);
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if (!(myflag & 0x01)) {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0x00;
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testvga2_tempch = 0x00;
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testvga2_tempcl = 0x00;
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}
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}
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} else {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0xd1;
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testsvhs_tempbh = 0x00;
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testsvhs_tempbl = 0xb9;
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testcvbs_tempbh = 0x00;
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testcvbs_tempbl = 0xb3;
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biosflag = 0;
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if (sis_vbflags & (VB_301B | VB_302B | VB_301LV | VB_302LV)) {
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if (sis_vbflags & (VB_301B | VB_302B)) {
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testvga2_tempbh = 0x01;
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testvga2_tempbl = 0x90;
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testsvhs_tempbh = 0x01;
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testsvhs_tempbl = 0x6b;
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testcvbs_tempbh = 0x01;
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testcvbs_tempbl = 0x74;
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} else {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0x00;
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testsvhs_tempbh = 0x02;
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testsvhs_tempbl = 0x00;
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testcvbs_tempbh = 0x01;
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testcvbs_tempbl = 0x00;
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}
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}
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if (sis_vbflags & (VB_301 | VB_301B | VB_302B)) {
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inSISIDXREG(SISPART4, 0x01, myflag);
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if (myflag & 0x04) {
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0xfd;
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testsvhs_tempbh = 0x00;
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testsvhs_tempbl = 0xdd;
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testcvbs_tempbh = 0x00;
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testcvbs_tempbl = 0xee;
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}
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}
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if (sis_vbflags & (VB_301LV | VB_302LV)) {
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/* TW: No VGA2 or SCART on LV bridges */
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testvga2_tempbh = 0x00;
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testvga2_tempbl = 0x00;
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testvga2_tempch = 0x00;
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testvga2_tempcl = 0x00;
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testsvhs_tempch = 0x04;
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testsvhs_tempcl = 0x08;
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testcvbs_tempch = 0x08;
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testcvbs_tempcl = 0x08;
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} else {
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testvga2_tempch = 0x0e;
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testvga2_tempcl = 0x08;
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testsvhs_tempch = 0x06;
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testsvhs_tempcl = 0x04;
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testcvbs_tempch = 0x08;
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testcvbs_tempcl = 0x04;
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}
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}
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/* XXX: ?? andSISIDXREG(SISCR, 0x32, ~0x14); */
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/* pSiS->postVBCR32 &= ~0x14; */
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/* scan for VGA2/SCART */
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if (testvga2_tempch || testvga2_tempcl ||
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testvga2_tempbh || testvga2_tempbl) {
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haveresult = 0;
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for (j = 0; j < 10; j++) {
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result = 0;
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for (i = 0; i < 3; i++) {
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if (sis_do_sense(testvga2_tempbl, testvga2_tempbh,
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testvga2_tempcl, testvga2_tempch))
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result++;
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}
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if ((result == 0) || (result >= 2))
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break;
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}
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if (result) {
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if (biosflag & 0x01) {
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if (sis_verbose > 1) {
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printf
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("[SiS] SiS30x: Detected TV connected to SCART output\n");
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}
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sis_vbflags |= TV_SCART;
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orSISIDXREG(SISCR, 0x32, 0x04);
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/*pSiS->postVBCR32 |= 0x04; */
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} else {
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if (sis_verbose > 1) {
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printf
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("[SiS] SiS30x: Detected secondary VGA connection\n");
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}
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sis_vbflags |= VGA2_CONNECTED;
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orSISIDXREG(SISCR, 0x32, 0x10);
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/*pSiS->postVBCR32 |= 0x10; */
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}
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}
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}
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/* scanning for TV */
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/* XXX: ?? andSISIDXREG(SISCR, 0x32, ~0x03); */
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/* pSiS->postVBCR32 &= ~0x03; */
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result = sis_do_sense(testsvhs_tempbl, testsvhs_tempbh,
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testsvhs_tempcl, testsvhs_tempch);
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haveresult = 0;
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for (j = 0; j < 10; j++) {
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result = 0;
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for (i = 0; i < 3; i++) {
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if (sis_do_sense(testsvhs_tempbl, testsvhs_tempbh,
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testsvhs_tempcl, testsvhs_tempch))
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result++;
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}
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if ((result == 0) || (result >= 2))
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break;
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}
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if (result) {
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if (sis_verbose > 1) {
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printf
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("[SiS] SiS30x: Detected TV connected to SVIDEO output\n");
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}
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/* TW: So we can be sure that there IS a SVIDEO output */
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sis_vbflags |= TV_SVIDEO;
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orSISIDXREG(SISCR, 0x32, 0x02);
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//pSiS->postVBCR32 |= 0x02;
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}
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if ((biosflag & 0x02) || (!(result))) {
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haveresult = 0;
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for (j = 0; j < 10; j++) {
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result = 0;
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for (i = 0; i < 3; i++) {
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if (sis_do_sense(testcvbs_tempbl, testcvbs_tempbh,
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testcvbs_tempcl, testcvbs_tempch))
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result++;
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}
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if ((result == 0) || (result >= 2))
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break;
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}
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if (result) {
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if (sis_verbose > 1) {
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printf
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("[SiS] SiS30x: Detected TV connected to COMPOSITE output\n");
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}
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sis_vbflags |= TV_AVIDEO;
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orSISIDXREG(SISCR, 0x32, 0x01);
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//pSiS->postVBCR32 |= 0x01;
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}
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}
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sis_do_sense(0, 0, 0, 0);
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outSISIDXREG(SISPART2, 0x00, backupP2_00);
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outSISIDXREG(SISPART4, 0x0d, backupP4_0d);
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}
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static void sis_detect_crt1(void)
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{
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unsigned char CR32;
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unsigned char CRT1Detected = 0;
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unsigned char OtherDevices = 0;
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if (!(sis_vbflags & VB_VIDEOBRIDGE)) {
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sis_crt1_off = 0;
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return;
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}
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inSISIDXREG(SISCR, 0x32, CR32);
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if (CR32 & 0x20)
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CRT1Detected = 1;
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if (CR32 & 0x5F)
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OtherDevices = 1;
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if (sis_crt1_off == -1) {
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if (!CRT1Detected) {
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/* BIOS detected no CRT1. */
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/* If other devices exist, switch it off */
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if (OtherDevices)
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sis_crt1_off = 1;
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else
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sis_crt1_off = 0;
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} else {
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/* BIOS detected CRT1, leave/switch it on */
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sis_crt1_off = 0;
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}
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}
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if (sis_verbose > 0) {
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printf("[SiS] %sCRT1 connection detected\n",
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sis_crt1_off ? "No " : "");
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}
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}
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static void sis_detect_tv(void)
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{
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unsigned char SR16, SR38, CR32, CR38 = 0, CR79;
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int temp = 0;
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if (!(sis_vbflags & VB_VIDEOBRIDGE))
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return;
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inSISIDXREG(SISCR, 0x32, CR32);
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inSISIDXREG(SISSR, 0x16, SR16);
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inSISIDXREG(SISSR, 0x38, SR38);
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switch (sis_vga_engine) {
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case SIS_300_VGA:
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if (sis_device_id == DEVICE_SIS_630_VGA)
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temp = 0x35;
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break;
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case SIS_315_VGA:
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temp = 0x38;
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break;
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}
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if (temp) {
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inSISIDXREG(SISCR, temp, CR38);
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}
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if (CR32 & 0x47)
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sis_vbflags |= CRT2_TV;
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if (CR32 & 0x04)
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sis_vbflags |= TV_SCART;
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else if (CR32 & 0x02)
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sis_vbflags |= TV_SVIDEO;
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else if (CR32 & 0x01)
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sis_vbflags |= TV_AVIDEO;
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else if (CR32 & 0x40)
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sis_vbflags |= (TV_SVIDEO | TV_HIVISION);
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else if ((CR38 & 0x04) && (sis_vbflags & (VB_301LV | VB_302LV)))
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sis_vbflags |= TV_HIVISION_LV;
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else if ((CR38 & 0x04) && (sis_vbflags & VB_CHRONTEL))
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sis_vbflags |= (TV_CHSCART | TV_PAL);
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else if ((CR38 & 0x08) && (sis_vbflags & VB_CHRONTEL))
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sis_vbflags |= (TV_CHHDTV | TV_NTSC);
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if (sis_vbflags & (TV_SCART | TV_SVIDEO | TV_AVIDEO | TV_HIVISION)) {
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if (sis_vga_engine == SIS_300_VGA) {
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/* TW: Should be SR38 here as well, but this
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* does not work. Looks like a BIOS bug (2.04.5c).
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*/
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if (SR16 & 0x20)
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sis_vbflags |= TV_PAL;
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else
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sis_vbflags |= TV_NTSC;
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} else if ((sis_device_id == DEVICE_SIS_550_VGA)) {
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inSISIDXREG(SISCR, 0x79, CR79);
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if (CR79 & 0x08) {
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inSISIDXREG(SISCR, 0x79, CR79);
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CR79 >>= 5;
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}
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if (CR79 & 0x01) {
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sis_vbflags |= TV_PAL;
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if (CR38 & 0x40)
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sis_vbflags |= TV_PALM;
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else if (CR38 & 0x80)
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sis_vbflags |= TV_PALN;
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} else
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sis_vbflags |= TV_NTSC;
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} else if ((sis_device_id == DEVICE_SIS_650_VGA)) {
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inSISIDXREG(SISCR, 0x79, CR79);
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if (CR79 & 0x20) {
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sis_vbflags |= TV_PAL;
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if (CR38 & 0x40)
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sis_vbflags |= TV_PALM;
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else if (CR38 & 0x80)
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sis_vbflags |= TV_PALN;
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} else
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sis_vbflags |= TV_NTSC;
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} else { /* 315, 330 */
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if (SR38 & 0x01) {
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sis_vbflags |= TV_PAL;
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if (CR38 & 0x40)
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sis_vbflags |= TV_PALM;
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else if (CR38 & 0x80)
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sis_vbflags |= TV_PALN;
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} else
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sis_vbflags |= TV_NTSC;
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}
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}
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if (sis_vbflags &
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(TV_SCART | TV_SVIDEO | TV_AVIDEO | TV_HIVISION | TV_CHSCART |
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TV_CHHDTV)) {
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if (sis_verbose > 0) {
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printf("[SiS] %sTV standard %s\n",
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(sis_vbflags & (TV_CHSCART | TV_CHHDTV)) ? "Using " :
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"Detected default ",
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(sis_vbflags & TV_NTSC) ? ((sis_vbflags & TV_CHHDTV) ?
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"480i HDTV" : "NTSC")
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: ((sis_vbflags & TV_PALM) ? "PALM"
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: ((sis_vbflags & TV_PALN) ? "PALN" : "PAL")));
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}
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}
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}
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static void sis_detect_crt2(void)
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{
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unsigned char CR32;
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if (!(sis_vbflags & VB_VIDEOBRIDGE))
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return;
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/* CRT2-VGA not supported on LVDS and 30xLV */
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if (sis_vbflags & (VB_LVDS | VB_301LV | VB_302LV))
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return;
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inSISIDXREG(SISCR, 0x32, CR32);
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if (CR32 & 0x10)
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sis_vbflags |= CRT2_VGA;
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}
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/* Preinit: detect video bridge and sense connected devs */
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static void sis_detect_video_bridge(void)
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{
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int temp, temp1, temp2;
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sis_vbflags = 0;
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if (sis_vga_engine != SIS_300_VGA && sis_vga_engine != SIS_315_VGA)
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return;
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inSISIDXREG(SISPART4, 0x00, temp);
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temp &= 0x0F;
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if (temp == 1) {
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inSISIDXREG(SISPART4, 0x01, temp1);
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temp1 &= 0xff;
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if (temp1 >= 0xE0) {
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sis_vbflags |= VB_302LV;
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//pSiS->sishw_ext.ujVBChipID = VB_CHIP_302LV;
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if (sis_verbose > 1) {
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printf
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("[SiS] Detected SiS302LV video bridge (ID 1; Revision 0x%x)\n",
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temp1);
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}
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} else if (temp1 >= 0xD0) {
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sis_vbflags |= VB_301LV;
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//pSiS->sishw_ext.ujVBChipID = VB_CHIP_301LV;
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if (sis_verbose > 1) {
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printf
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("[SiS] Detected SiS301LV video bridge (ID 1; Revision 0x%x)\n",
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temp1);
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|
}
|
|
} 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);
|
|
}
|
|
|
|
}
|