Quelle  init301.c   Sprache: C

/* $XFree86$ */
/* $XdotOrg$ */
/*
 * Mode initializing code (CRT2 section)
 * for SiS 300/305/540/630/730,
 *     SiS 315/550/[M]650/651/[M]661[FGM]X/[M]74x[GX]/330/[M]76x[GX],
 *     XGI V3XT/V5/V8, Z7
 * (Universal module for Linux kernel framebuffer and X.org/XFree86 4.x)
 *
 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
 *
 * If distributed as part of the Linux kernel, the following license terms
 * apply:
 *
 * * This program 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 named License,
 * * or any later version.
 * *
 * * This program 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 this program; if not, write to the Free Software
 * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 *
 * Otherwise, the following license terms apply:
 *
 * * Redistribution and use in source and binary forms, with or without
 * * modification, are permitted provided that the following conditions
 * * are met:
 * * 1) Redistributions of source code must retain the above copyright
 * *    notice, this list of conditions and the following disclaimer.
 * * 2) Redistributions in binary form must reproduce the above copyright
 * *    notice, this list of conditions and the following disclaimer in the
 * *    documentation and/or other materials provided with the distribution.
 * * 3) The name of the author may not be used to endorse or promote products
 * *    derived from this software without specific prior written permission.
 * *
 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author:  Thomas Winischhofer <thomas@winischhofer.net>
 *
 * Formerly based on non-functional code-fragements for 300 series by SiS, Inc.
 * Used by permission.
 *
 */

#if 1
#define SET_EMI  /* 302LV/ELV: Set EMI values */
#endif

#if 1
#define SET_PWD  /* 301/302LV: Set PWD */
#endif

#define COMPAL_HACK /* Needed for Compal 1400x1050 (EMI) */
#define COMPAQ_HACK /* Needed for Inventec/Compaq 1280x1024 (EMI) */
#define ASUS_HACK /* Needed for Asus A2H 1024x768 (EMI) */

#include "init301.h"

#ifdef CONFIG_FB_SIS_300
#include "oem300.h"
#endif

#ifdef CONFIG_FB_SIS_315
#include "oem310.h"
#endif

#define SiS_I2CDELAY      1000
#define SiS_I2CDELAYSHORT  150

static const unsigned char SiS_YPbPrTable[3][64] = {
  {
    0x17,0x1d,0x03,0x09,0x05,0x06,0x0c,0x0c,
    0x94,0x49,0x01,0x0a,0x06,0x0d,0x04,0x0a,
    0x06,0x14,0x0d,0x04,0x0a,0x00,0x85,0x1b,
    0x0c,0x50,0x00,0x97,0x00,0xda,0x4a,0x17,
    0x7d,0x05,0x4b,0x00,0x00,0xe2,0x00,0x02,
    0x03,0x0a,0x65,0x9d /*0x8d*/,0x08,0x92,0x8f,0x40,
    0x60,0x80,0x14,0x90,0x8c,0x60,0x14,0x53 /*0x50*/,
    0x00,0x40,0x44,0x00,0xdb,0x02,0x3b,0x00
  },
  {
    0x33,0x06,0x06,0x09,0x0b,0x0c,0x0c,0x0c,
    0x98,0x0a,0x01,0x0d,0x06,0x0d,0x04,0x0a,
    0x06,0x14,0x0d,0x04,0x0a,0x00,0x85,0x3f,
    0x0c,0x50,0xb2,0x9f,0x16,0x59,0x4f,0x13,
    0xad,0x11,0xad,0x1d,0x40,0x8a,0x3d,0xb8,
    0x51,0x5e,0x60,0x49,0x7d,0x92,0x0f,0x40,
    0x60,0x80,0x14,0x90,0x8c,0x60,0x14,0x4e,
    0x43,0x41,0x11,0x00,0xfc,0xff,0x32,0x00
  },
  {
#if 0 /* OK, but sticks to left edge */
    0x13,0x1d,0xe8,0x09,0x09,0xed,0x0c,0x0c,
    0x98,0x0a,0x01,0x0c,0x06,0x0d,0x04,0x0a,
    0x06,0x14,0x0d,0x04,0x0a,0x00,0x85,0x3f,
    0xed,0x50,0x70,0x9f,0x16,0x59,0x21 /*0x2b*/,0x13,
    0x27,0x0b,0x27,0xfc,0x30,0x27,0x1c,0xb0,
    0x4b,0x4b,0x65 /*0x6f*/,0x2f,0x63,0x92,0x0f,0x40,
    0x60,0x80,0x14,0x90,0x8c,0x60,0x14,0x27,
    0x00,0x40,0x11,0x00,0xfc,0xff,0x32,0x00
#endif
#if 1 /* Perfect */
    0x23,0x2d,0xe8,0x09,0x09,0xed,0x0c,0x0c,
    0x98,0x0a,0x01,0x0c,0x06,0x0d,0x04,0x0a,
    0x06,0x14,0x0d,0x04,0x0a,0x00,0x85,0x3f,
    0xed,0x50,0x70,0x9f,0x16,0x59,0x60,0x13,
    0x27,0x0b,0x27,0xfc,0x30,0x27,0x1c,0xb0,
    0x4b,0x4b,0x6f,0x2f,0x63,0x92,0x0f,0x40,
    0x60,0x80,0x14,0x90,0x8c,0x60,0x14,0x73,
    0x00,0x40,0x11,0x00,0xfc,0xff,0x32,0x00
#endif
  }
};

static const unsigned char SiS_TVPhase[] =
{
 0x21,0xED,0xBA,0x08, /* 0x00 SiS_NTSCPhase */
 0x2A,0x05,0xE3,0x00, /* 0x01 SiS_PALPhase */
 0x21,0xE4,0x2E,0x9B, /* 0x02 SiS_PALMPhase */
 0x21,0xF4,0x3E,0xBA, /* 0x03 SiS_PALNPhase */
 0x1E,0x8B,0xA2,0xA7,
 0x1E,0x83,0x0A,0xE0, /* 0x05 SiS_SpecialPhaseM */
 0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,
 0x21,0xF0,0x7B,0xD6, /* 0x08 SiS_NTSCPhase2 */
 0x2A,0x09,0x86,0xE9, /* 0x09 SiS_PALPhase2 */
 0x21,0xE6,0xEF,0xA4, /* 0x0a SiS_PALMPhase2 */
 0x21,0xF6,0x94,0x46, /* 0x0b SiS_PALNPhase2 */
 0x1E,0x8B,0xA2,0xA7,
 0x1E,0x83,0x0A,0xE0, /* 0x0d SiS_SpecialPhaseM */
 0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,
 0x1e,0x8c,0x5c,0x7a, /* 0x10 SiS_SpecialPhase */
 0x25,0xd4,0xfd,0x5e /* 0x11 SiS_SpecialPhaseJ */
};

static const unsigned char SiS_HiTVGroup3_1[] = {
    0x00, 0x14, 0x15, 0x25, 0x55, 0x15, 0x0b, 0x13,
    0xb1, 0x41, 0x62, 0x62, 0xff, 0xf4, 0x45, 0xa6,
    0x25, 0x2f, 0x67, 0xf6, 0xbf, 0xff, 0x8e, 0x20,
    0xac, 0xda, 0x60, 0xfe, 0x6a, 0x9a, 0x06, 0x10,
    0xd1, 0x04, 0x18, 0x0a, 0xff, 0x80, 0x00, 0x80,
    0x3b, 0x77, 0x00, 0xef, 0xe0, 0x10, 0xb0, 0xe0,
    0x10, 0x4f, 0x0f, 0x0f, 0x05, 0x0f, 0x08, 0x6e,
    0x1a, 0x1f, 0x25, 0x2a, 0x4c, 0xaa, 0x01
};

static const unsigned char SiS_HiTVGroup3_2[] = {
    0x00, 0x14, 0x15, 0x25, 0x55, 0x15, 0x0b, 0x7a,
    0x54, 0x41, 0xe7, 0xe7, 0xff, 0xf4, 0x45, 0xa6,
    0x25, 0x2f, 0x67, 0xf6, 0xbf, 0xff, 0x8e, 0x20,
    0xac, 0x6a, 0x60, 0x2b, 0x52, 0xcd, 0x61, 0x10,
    0x51, 0x04, 0x18, 0x0a, 0x1f, 0x80, 0x00, 0x80,
    0xff, 0xa4, 0x04, 0x2b, 0x94, 0x21, 0x72, 0x94,
    0x26, 0x05, 0x01, 0x0f, 0xed, 0x0f, 0x0a, 0x64,
    0x18, 0x1d, 0x23, 0x28, 0x4c, 0xaa, 0x01
};

/* 301C / 302ELV extended Part2 TV registers (4 tap scaler) */
#ifdef CONFIG_FB_SIS_315
static const unsigned char SiS_Part2CLVX_1[] = {
    0x00,0x00,
    0x00,0x20,0x00,0x00,0x7F,0x20,0x02,0x7F,0x7D,0x20,0x04,0x7F,0x7D,0x1F,0x06,0x7E,
    0x7C,0x1D,0x09,0x7E,0x7C,0x1B,0x0B,0x7E,0x7C,0x19,0x0E,0x7D,0x7C,0x17,0x11,0x7C,
    0x7C,0x14,0x14,0x7C,0x7C,0x11,0x17,0x7C,0x7D,0x0E,0x19,0x7C,0x7E,0x0B,0x1B,0x7C,
    0x7E,0x09,0x1D,0x7C,0x7F,0x06,0x1F,0x7C,0x7F,0x04,0x20,0x7D,0x00,0x02,0x20,0x7E
};

static const unsigned char SiS_Part2CLVX_2[] = {
    0x00,0x00,
    0x00,0x20,0x00,0x00,0x7F,0x20,0x02,0x7F,0x7D,0x20,0x04,0x7F,0x7D,0x1F,0x06,0x7E,
    0x7C,0x1D,0x09,0x7E,0x7C,0x1B,0x0B,0x7E,0x7C,0x19,0x0E,0x7D,0x7C,0x17,0x11,0x7C,
    0x7C,0x14,0x14,0x7C,0x7C,0x11,0x17,0x7C,0x7D,0x0E,0x19,0x7C,0x7E,0x0B,0x1B,0x7C,
    0x7E,0x09,0x1D,0x7C,0x7F,0x06,0x1F,0x7C,0x7F,0x04,0x20,0x7D,0x00,0x02,0x20,0x7E
};

static const unsigned char SiS_Part2CLVX_3[] = {  /* NTSC, 525i, 525p */
    0xE0,0x01,
    0x04,0x1A,0x04,0x7E,0x03,0x1A,0x06,0x7D,0x01,0x1A,0x08,0x7D,0x00,0x19,0x0A,0x7D,
    0x7F,0x19,0x0C,0x7C,0x7E,0x18,0x0E,0x7C,0x7E,0x17,0x10,0x7B,0x7D,0x15,0x12,0x7C,
    0x7D,0x13,0x13,0x7D,0x7C,0x12,0x15,0x7D,0x7C,0x10,0x17,0x7D,0x7C,0x0E,0x18,0x7E,
    0x7D,0x0C,0x19,0x7E,0x7D,0x0A,0x19,0x00,0x7D,0x08,0x1A,0x01,0x7E,0x06,0x1A,0x02,
    0x58,0x02,
    0x07,0x14,0x07,0x7E,0x06,0x14,0x09,0x7D,0x05,0x14,0x0A,0x7D,0x04,0x13,0x0B,0x7E,
    0x03,0x13,0x0C,0x7E,0x02,0x12,0x0D,0x7F,0x01,0x12,0x0E,0x7F,0x01,0x11,0x0F,0x7F,
    0x00,0x10,0x10,0x00,0x7F,0x0F,0x11,0x01,0x7F,0x0E,0x12,0x01,0x7E,0x0D,0x12,0x03,
    0x7E,0x0C,0x13,0x03,0x7E,0x0B,0x13,0x04,0x7E,0x0A,0x14,0x04,0x7D,0x09,0x14,0x06,
    0x00,0x03,
    0x09,0x0F,0x09,0x7F,0x08,0x0F,0x09,0x00,0x07,0x0F,0x0A,0x00,0x06,0x0F,0x0A,0x01,
    0x06,0x0E,0x0B,0x01,0x05,0x0E,0x0B,0x02,0x04,0x0E,0x0C,0x02,0x04,0x0D,0x0C,0x03,
    0x03,0x0D,0x0D,0x03,0x02,0x0C,0x0D,0x05,0x02,0x0C,0x0E,0x04,0x01,0x0B,0x0E,0x06,
    0x01,0x0B,0x0E,0x06,0x00,0x0A,0x0F,0x07,0x00,0x0A,0x0F,0x07,0x00,0x09,0x0F,0x08,
    0xFF,0xFF
};

static const unsigned char SiS_Part2CLVX_4[] = {   /* PAL */
    0x58,0x02,
    0x05,0x19,0x05,0x7D,0x03,0x19,0x06,0x7E,0x02,0x19,0x08,0x7D,0x01,0x18,0x0A,0x7D,
    0x00,0x18,0x0C,0x7C,0x7F,0x17,0x0E,0x7C,0x7E,0x16,0x0F,0x7D,0x7E,0x14,0x11,0x7D,
    0x7D,0x13,0x13,0x7D,0x7D,0x11,0x14,0x7E,0x7D,0x0F,0x16,0x7E,0x7D,0x0E,0x17,0x7E,
    0x7D,0x0C,0x18,0x7F,0x7D,0x0A,0x18,0x01,0x7D,0x08,0x19,0x02,0x7D,0x06,0x19,0x04,
    0x00,0x03,
    0x08,0x12,0x08,0x7E,0x07,0x12,0x09,0x7E,0x06,0x12,0x0A,0x7E,0x05,0x11,0x0B,0x7F,
    0x04,0x11,0x0C,0x7F,0x03,0x11,0x0C,0x00,0x03,0x10,0x0D,0x00,0x02,0x0F,0x0E,0x01,
    0x01,0x0F,0x0F,0x01,0x01,0x0E,0x0F,0x02,0x00,0x0D,0x10,0x03,0x7F,0x0C,0x11,0x04,
    0x7F,0x0C,0x11,0x04,0x7F,0x0B,0x11,0x05,0x7E,0x0A,0x12,0x06,0x7E,0x09,0x12,0x07,
    0x40,0x02,
    0x04,0x1A,0x04,0x7E,0x02,0x1B,0x05,0x7E,0x01,0x1A,0x07,0x7E,0x00,0x1A,0x09,0x7D,
    0x7F,0x19,0x0B,0x7D,0x7E,0x18,0x0D,0x7D,0x7D,0x17,0x10,0x7C,0x7D,0x15,0x12,0x7C,
    0x7C,0x14,0x14,0x7C,0x7C,0x12,0x15,0x7D,0x7C,0x10,0x17,0x7D,0x7C,0x0D,0x18,0x7F,
    0x7D,0x0B,0x19,0x7F,0x7D,0x09,0x1A,0x00,0x7D,0x07,0x1A,0x02,0x7E,0x05,0x1B,0x02,
    0xFF,0xFF
};

static const unsigned char SiS_Part2CLVX_5[] = {   /* 750p */
    0x00,0x03,
    0x05,0x19,0x05,0x7D,0x03,0x19,0x06,0x7E,0x02,0x19,0x08,0x7D,0x01,0x18,0x0A,0x7D,
    0x00,0x18,0x0C,0x7C,0x7F,0x17,0x0E,0x7C,0x7E,0x16,0x0F,0x7D,0x7E,0x14,0x11,0x7D,
    0x7D,0x13,0x13,0x7D,0x7D,0x11,0x14,0x7E,0x7D,0x0F,0x16,0x7E,0x7D,0x0E,0x17,0x7E,
    0x7D,0x0C,0x18,0x7F,0x7D,0x0A,0x18,0x01,0x7D,0x08,0x19,0x02,0x7D,0x06,0x19,0x04,
    0xFF,0xFF
};

static const unsigned char SiS_Part2CLVX_6[] = {   /* 1080i */
    0x00,0x04,
    0x04,0x1A,0x04,0x7E,0x02,0x1B,0x05,0x7E,0x01,0x1A,0x07,0x7E,0x00,0x1A,0x09,0x7D,
    0x7F,0x19,0x0B,0x7D,0x7E,0x18,0x0D,0x7D,0x7D,0x17,0x10,0x7C,0x7D,0x15,0x12,0x7C,
    0x7C,0x14,0x14,0x7C,0x7C,0x12,0x15,0x7D,0x7C,0x10,0x17,0x7D,0x7C,0x0D,0x18,0x7F,
    0x7D,0x0B,0x19,0x7F,0x7D,0x09,0x1A,0x00,0x7D,0x07,0x1A,0x02,0x7E,0x05,0x1B,0x02,
    0xFF,0xFF,
};

/* 661 et al LCD data structure (2.03.00) */
static const unsigned char SiS_LCDStruct661[] = {
    /* 1024x768 */
/*  type|CR37|   HDE   |   VDE   |    HT   |    VT   |   hss    | hse   */
    0x02,0xC0,0x00,0x04,0x00,0x03,0x40,0x05,0x26,0x03,0x10,0x00,0x88,
    0x00,0x02,0x00,0x06,0x00,0x41,0x5A,0x64,0x00,0x00,0x00,0x00,0x04,
    /*  | vss     |    vse  |clck|  clock  |CRT2DataP|CRT2DataP|idx     */
    /*       VESA    non-VESA  noscale */
    /* 1280x1024 */
    0x03,0xC0,0x00,0x05,0x00,0x04,0x98,0x06,0x2A,0x04,0x30,0x00,0x70,
    0x00,0x01,0x00,0x03,0x00,0x6C,0xF8,0x2F,0x00,0x00,0x00,0x00,0x08,
    /* 1400x1050 */
    0x09,0x20,0x78,0x05,0x1A,0x04,0x98,0x06,0x2A,0x04,0x18,0x00,0x38,
    0x00,0x01,0x00,0x03,0x00,0x6C,0xF8,0x2F,0x00,0x00,0x00,0x00,0x09,
    /* 1600x1200 */
    0x0B,0xE0,0x40,0x06,0xB0,0x04,0x70,0x08,0xE2,0x04,0x40,0x00,0xC0,
    0x00,0x01,0x00,0x03,0x00,0xA2,0x70,0x24,0x00,0x00,0x00,0x00,0x0A,
    /* 1280x768 (_2) */
    0x0A,0xE0,0x00,0x05,0x00,0x03,0x7C,0x06,0x26,0x03,0x30,0x00,0x70,
    0x00,0x03,0x00,0x06,0x00,0x4D,0xC8,0x48,0x00,0x00,0x00,0x00,0x06,
    /* 1280x720 */
    0x0E,0xE0,0x00,0x05,0xD0,0x02,0x80,0x05,0x26,0x03,0x10,0x00,0x20,
    0x00,0x01,0x00,0x06,0x00,0x45,0x9C,0x62,0x00,0x00,0x00,0x00,0x05,
    /* 1280x800 (_2) */
    0x0C,0xE0,0x00,0x05,0x20,0x03,0x10,0x06,0x2C,0x03,0x30,0x00,0x70,
    0x00,0x04,0x00,0x03,0x00,0x49,0xCE,0x1E,0x00,0x00,0x00,0x00,0x09,
    /* 1680x1050 */
    0x0D,0xE0,0x90,0x06,0x1A,0x04,0x6C,0x07,0x2A,0x04,0x1A,0x00,0x4C,
    0x00,0x03,0x00,0x06,0x00,0x79,0xBE,0x44,0x00,0x00,0x00,0x00,0x06,
    /* 1280x800_3 */
    0x0C,0xE0,0x00,0x05,0x20,0x03,0xAA,0x05,0x2E,0x03,0x30,0x00,0x50,
    0x00,0x04,0x00,0x03,0x00,0x47,0xA9,0x10,0x00,0x00,0x00,0x00,0x07,
    /* 800x600 */
    0x01,0xC0,0x20,0x03,0x58,0x02,0x20,0x04,0x74,0x02,0x2A,0x00,0x80,
    0x00,0x06,0x00,0x04,0x00,0x28,0x63,0x4B,0x00,0x00,0x00,0x00,0x00,
    /* 1280x854 */
    0x08,0xE0,0x00,0x05,0x56,0x03,0x80,0x06,0x5d,0x03,0x10,0x00,0x70,
    0x00,0x01,0x00,0x03,0x00,0x54,0x75,0x13,0x00,0x00,0x00,0x00,0x08
};
#endif

#ifdef CONFIG_FB_SIS_300
static unsigned char SiS300_TrumpionData[14][80] = {
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0x7F,0x00,0x80,0x02,
    0x20,0x03,0x0B,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x10,0x00,0x00,0x04,0x23,
    0x00,0x00,0x03,0x28,0x03,0x10,0x05,0x08,0x40,0x10,0x00,0x10,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xBC,0x01,0xFF,0x03,0xFF,0x19,0x01,0x00,0x05,0x09,0x04,0x04,0x05,
    0x04,0x0C,0x09,0x05,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x5A,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0x27,0x00,0x80,0x02,
    0x20,0x03,0x07,0x00,0x5E,0x01,0x0D,0x02,0x60,0x0C,0x30,0x11,0x00,0x00,0x04,0x23,
    0x00,0x00,0x03,0x80,0x03,0x28,0x06,0x08,0x40,0x11,0x00,0x11,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0x90,0x01,0xFF,0x0F,0xF4,0x19,0x01,0x00,0x05,0x01,0x00,0x04,0x05,
    0x04,0x0C,0x02,0x01,0x02,0xB0,0x00,0x00,0x02,0xBA,0xEC,0x57,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0x8A,0x00,0xD8,0x02,
    0x84,0x03,0x16,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x1C,0x00,0x20,0x04,0x23,
    0x00,0x01,0x03,0x53,0x03,0x28,0x06,0x08,0x40,0x1C,0x00,0x16,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xD9,0x01,0xFF,0x0F,0xF4,0x18,0x07,0x05,0x05,0x13,0x04,0x04,0x05,
    0x01,0x0B,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x59,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0x72,0x00,0xD8,0x02,
    0x84,0x03,0x16,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x1C,0x00,0x20,0x04,0x23,
    0x00,0x01,0x03,0x53,0x03,0x28,0x06,0x08,0x40,0x1C,0x00,0x16,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xDA,0x01,0xFF,0x0F,0xF4,0x18,0x07,0x05,0x05,0x13,0x04,0x04,0x05,
    0x01,0x0B,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x55,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x02,0x00,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0x7F,0x00,0x80,0x02,
    0x20,0x03,0x16,0x00,0xE0,0x01,0x0D,0x02,0x60,0x0C,0x30,0x98,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x45,0x03,0x48,0x06,0x08,0x40,0x98,0x00,0x98,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xF4,0x01,0xFF,0x0F,0xF4,0x18,0x01,0x00,0x05,0x01,0x00,0x05,0x05,
    0x04,0x0C,0x08,0x05,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x5B,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x02,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0xBF,0x00,0x20,0x03,
    0x20,0x04,0x0D,0x00,0x58,0x02,0x71,0x02,0x80,0x0C,0x30,0x9A,0x00,0xFA,0x03,0x1D,
    0x00,0x01,0x03,0x22,0x03,0x28,0x06,0x08,0x40,0x98,0x00,0x98,0x04,0x1D,0x00,0x1D,
    0x03,0x11,0x60,0x39,0x03,0x40,0x05,0xF4,0x18,0x07,0x02,0x06,0x04,0x01,0x06,0x0B,
    0x02,0x0A,0x20,0x19,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x5B,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x0D,0x00,0x0D,0x10,0xEF,0x00,0x00,0x04,
    0x40,0x05,0x13,0x00,0x00,0x03,0x26,0x03,0x88,0x0C,0x30,0x90,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x24,0x03,0x28,0x06,0x08,0x40,0x90,0x00,0x90,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0x40,0x05,0xFF,0x0F,0xF4,0x18,0x01,0x00,0x08,0x01,0x00,0x08,0x01,
    0x00,0x08,0x01,0x01,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x5B,0x01,0xBE,0x01,0x00 },
  /* variant 2 */
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0x7F,0x00,0x80,0x02,
    0x20,0x03,0x15,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x18,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x44,0x03,0x28,0x06,0x08,0x40,0x18,0x00,0x18,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xA6,0x01,0xFF,0x03,0xFF,0x19,0x01,0x00,0x05,0x13,0x04,0x04,0x05,
    0x04,0x0C,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x55,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0x7F,0x00,0x80,0x02,
    0x20,0x03,0x15,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x18,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x44,0x03,0x28,0x06,0x08,0x40,0x18,0x00,0x18,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xA6,0x01,0xFF,0x03,0xFF,0x19,0x01,0x00,0x05,0x13,0x04,0x04,0x05,
    0x04,0x0C,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x55,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0x8A,0x00,0xD8,0x02,
    0x84,0x03,0x16,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x1C,0x00,0x20,0x04,0x23,
    0x00,0x01,0x03,0x53,0x03,0x28,0x06,0x08,0x40,0x1C,0x00,0x16,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xDA,0x01,0xFF,0x0F,0xF4,0x18,0x07,0x05,0x05,0x13,0x04,0x04,0x05,
    0x01,0x0B,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x55,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0x72,0x00,0xD8,0x02,
    0x84,0x03,0x16,0x00,0x90,0x01,0xC1,0x01,0x60,0x0C,0x30,0x1C,0x00,0x20,0x04,0x23,
    0x00,0x01,0x03,0x53,0x03,0x28,0x06,0x08,0x40,0x1C,0x00,0x16,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xDA,0x01,0xFF,0x0F,0xF4,0x18,0x07,0x05,0x05,0x13,0x04,0x04,0x05,
    0x01,0x0B,0x13,0x0A,0x02,0xB0,0x00,0x00,0x02,0xBA,0xF0,0x55,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x02,0x00,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0x7F,0x00,0x80,0x02,
    0x20,0x03,0x16,0x00,0xE0,0x01,0x0D,0x02,0x60,0x0C,0x30,0x98,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x45,0x03,0x48,0x06,0x08,0x40,0x98,0x00,0x98,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0xF4,0x01,0xFF,0x0F,0xF4,0x18,0x01,0x00,0x05,0x01,0x00,0x05,0x05,
    0x04,0x0C,0x08,0x05,0x02,0xB0,0x00,0x00,0x02,0xBA,0xEA,0x58,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x02,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0xBF,0x00,0x20,0x03,
    0x20,0x04,0x0D,0x00,0x58,0x02,0x71,0x02,0x80,0x0C,0x30,0x9A,0x00,0xFA,0x03,0x1D,
    0x00,0x01,0x03,0x22,0x03,0x28,0x06,0x08,0x40,0x98,0x00,0x98,0x04,0x1D,0x00,0x1D,
    0x03,0x11,0x60,0x39,0x03,0x40,0x05,0xF4,0x18,0x07,0x02,0x06,0x04,0x01,0x06,0x0B,
    0x02,0x0A,0x20,0x19,0x02,0xB0,0x00,0x00,0x02,0xBA,0xEA,0x58,0x01,0xBE,0x01,0x00 },
  { 0x02,0x0A,0x0A,0x01,0x04,0x01,0x00,0x03,0x11,0x00,0x0D,0x10,0xEF,0x00,0x00,0x04,
    0x40,0x05,0x13,0x00,0x00,0x03,0x26,0x03,0x88,0x0C,0x30,0x90,0x00,0x00,0x04,0x23,
    0x00,0x01,0x03,0x24,0x03,0x28,0x06,0x08,0x40,0x90,0x00,0x90,0x04,0x23,0x00,0x23,
    0x03,0x11,0x60,0x40,0x05,0xFF,0x0F,0xF4,0x18,0x01,0x00,0x08,0x01,0x00,0x08,0x01,
    0x00,0x08,0x01,0x01,0x02,0xB0,0x00,0x00,0x02,0xBA,0xEA,0x58,0x01,0xBE,0x01,0x00 }
};
#endif

#ifdef CONFIG_FB_SIS_315
static void SiS_Chrontel701xOn(struct SiS_Private *SiS_Pr);
static void SiS_Chrontel701xOff(struct SiS_Private *SiS_Pr);
static void SiS_ChrontelInitTVVSync(struct SiS_Private *SiS_Pr);
static void SiS_ChrontelDoSomething1(struct SiS_Private *SiS_Pr);
#endif /* 315 */

#ifdef CONFIG_FB_SIS_300
static  bool SiS_SetTrumpionBlock(struct SiS_Private *SiS_Pr, unsigned char *dataptr);
#endif

static unsigned short SiS_InitDDCRegs(struct SiS_Private *SiS_Pr, unsigned int VBFlags,
    int VGAEngine, unsigned short adaptnum, unsigned short DDCdatatype,
    bool checkcr32, unsigned int VBFlags2);
static unsigned short SiS_ProbeDDC(struct SiS_Private *SiS_Pr);
static unsigned short SiS_ReadDDC(struct SiS_Private *SiS_Pr, unsigned short DDCdatatype,
    unsigned char *buffer);
static void  SiS_SetSwitchDDC2(struct SiS_Private *SiS_Pr);
static unsigned short SiS_SetStart(struct SiS_Private *SiS_Pr);
static unsigned short SiS_SetStop(struct SiS_Private *SiS_Pr);
static unsigned short SiS_SetSCLKLow(struct SiS_Private *SiS_Pr);
static unsigned short SiS_SetSCLKHigh(struct SiS_Private *SiS_Pr);
static unsigned short SiS_ReadDDC2Data(struct SiS_Private *SiS_Pr);
static unsigned short SiS_WriteDDC2Data(struct SiS_Private *SiS_Pr, unsigned short tempax);
static unsigned short SiS_CheckACK(struct SiS_Private *SiS_Pr);
static unsigned short SiS_WriteDABDDC(struct SiS_Private *SiS_Pr);
static unsigned short SiS_PrepareReadDDC(struct SiS_Private *SiS_Pr);
static unsigned short SiS_PrepareDDC(struct SiS_Private *SiS_Pr);
static void  SiS_SendACK(struct SiS_Private *SiS_Pr, unsigned short yesno);
static unsigned short SiS_DoProbeDDC(struct SiS_Private *SiS_Pr);

#ifdef CONFIG_FB_SIS_300
static void  SiS_OEM300Setting(struct SiS_Private *SiS_Pr,
    unsigned short ModeNo, unsigned short ModeIdIndex, unsigned short RefTabindex);
static void  SetOEMLCDData2(struct SiS_Private *SiS_Pr,
    unsigned short ModeNo, unsigned short ModeIdIndex,unsigned short RefTableIndex);
#endif
#ifdef CONFIG_FB_SIS_315
static void  SiS_OEM310Setting(struct SiS_Private *SiS_Pr,
    unsigned short ModeNo,unsigned short ModeIdIndex, unsigned short RRTI);
static void  SiS_OEM661Setting(struct SiS_Private *SiS_Pr,
    unsigned short ModeNo,unsigned short ModeIdIndex, unsigned short RRTI);
static void  SiS_FinalizeLCD(struct SiS_Private *, unsigned short, unsigned short);
#endif

static unsigned short SiS_GetBIOSLCDResInfo(struct SiS_Private *SiS_Pr);
static void  SiS_SetCH70xx(struct SiS_Private *SiS_Pr, unsigned short reg, unsigned char val);

/*********************************************/
/*         HELPER: Lock/Unlock CRT2          */
/*********************************************/

void
SiS_UnLockCRT2(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType == XGI_20)
      return;
   else if(SiS_Pr->ChipType >= SIS_315H)
      SiS_SetRegOR(SiS_Pr->SiS_Part1Port,0x2f,0x01);
   else
      SiS_SetRegOR(SiS_Pr->SiS_Part1Port,0x24,0x01);
}

static
void
SiS_LockCRT2(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType == XGI_20)
      return;
   else if(SiS_Pr->ChipType >= SIS_315H)
      SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x2F,0xFE);
   else
      SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x24,0xFE);
}

/*********************************************/
/*            HELPER: Write SR11             */
/*********************************************/

static void
SiS_SetRegSR11ANDOR(struct SiS_Private *SiS_Pr, unsigned short DataAND, unsigned short DataOR)
{
   if(SiS_Pr->ChipType >= SIS_661) {
      DataAND &= 0x0f;
      DataOR  &= 0x0f;
   }
   SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x11,DataAND,DataOR);
}

/*********************************************/
/*    HELPER: Get Pointer to LCD structure   */
/*********************************************/

#ifdef CONFIG_FB_SIS_315
static unsigned char *
GetLCDStructPtr661(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned char  *myptr = NULL;
   unsigned short romindex = 0, reg = 0, idx = 0;

   /* Use the BIOS tables only for LVDS panels; TMDS is unreliable
    * due to the variaty of panels the BIOS doesn't know about.
    * Exception: If the BIOS has better knowledge (such as in case
    * of machines with a 301C and a panel that does not support DDC)
    * use the BIOS data as well.
    */

   if((SiS_Pr->SiS_ROMNew) &&
      ((SiS_Pr->SiS_VBType & VB_SISLVDS) || (!SiS_Pr->PanelSelfDetected))) {

      if(SiS_Pr->ChipType < SIS_661) reg = 0x3c;
      else                           reg = 0x7d;

      idx = (SiS_GetReg(SiS_Pr->SiS_P3d4,reg) & 0x1f) * 26;

      if(idx < (8*26)) {
         myptr = (unsigned char *)&SiS_LCDStruct661[idx];
      }
      romindex = SISGETROMW(0x100);
      if(romindex) {
         romindex += idx;
         myptr = &ROMAddr[romindex];
      }
   }
   return myptr;
}

static unsigned short
GetLCDStructPtr661_2(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short romptr = 0;

   /* Use the BIOS tables only for LVDS panels; TMDS is unreliable
    * due to the variaty of panels the BIOS doesn't know about.
    * Exception: If the BIOS has better knowledge (such as in case
    * of machines with a 301C and a panel that does not support DDC)
    * use the BIOS data as well.
    */

   if((SiS_Pr->SiS_ROMNew) &&
      ((SiS_Pr->SiS_VBType & VB_SISLVDS) || (!SiS_Pr->PanelSelfDetected))) {
      romptr = SISGETROMW(0x102);
      romptr += ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4) * SiS_Pr->SiS661LCD2TableSize);
   }

   return romptr;
}
#endif

/*********************************************/
/*           Adjust Rate for CRT2            */
/*********************************************/

static bool
SiS_AdjustCRT2Rate(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex,
  unsigned short RRTI, unsigned short *i)
{
   unsigned short checkmask=0, modeid, infoflag;

   modeid = SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID;

   if(SiS_Pr->SiS_VBType & VB_SISVB) {

      if(SiS_Pr->SiS_VBInfo & SetCRT2ToRAMDAC) {

  checkmask |= SupportRAMDAC2;
  if(SiS_Pr->ChipType >= SIS_315H) {
     checkmask |= SupportRAMDAC2_135;
     if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
        checkmask |= SupportRAMDAC2_162;
        if(SiS_Pr->SiS_VBType & VB_SISRAMDAC202) {
    checkmask |= SupportRAMDAC2_202;
        }
     }
  }

      } else if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) {

  checkmask |= SupportLCD;
  if(SiS_Pr->ChipType >= SIS_315H) {
     if(SiS_Pr->SiS_VBType & VB_SISVB) {
        if((SiS_Pr->SiS_LCDInfo & DontExpandLCD) && (SiS_Pr->SiS_LCDInfo & LCDPass11)) {
           if(modeid == 0x2e) checkmask |= Support64048060Hz;
        }
     }
  }

      } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {

  checkmask |= SupportHiVision;

      } else if(SiS_Pr->SiS_VBInfo & (SetCRT2ToYPbPr525750|SetCRT2ToAVIDEO|SetCRT2ToSVIDEO|SetCRT2ToSCART)) {

  checkmask |= SupportTV;
  if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
     checkmask |= SupportTV1024;
     if(SiS_Pr->SiS_VBInfo & SetCRT2ToYPbPr525750) {
        if(SiS_Pr->SiS_TVMode & TVSetYPbPr750p) {
           checkmask |= SupportYPbPr750p;
        }
     }
  }

      }

   } else { /* LVDS */

      if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
  if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
     checkmask |= SupportCHTV;
  }
      }

      if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
  checkmask |= SupportLCD;
      }

   }

   /* Look backwards in table for matching CRT2 mode */
   for(; SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID == modeid; (*i)--) {
      infoflag = SiS_Pr->SiS_RefIndex[RRTI + (*i)].Ext_InfoFlag;
      if(infoflag & checkmask) return true;
      if((*i) == 0) break;
   }

   /* Look through the whole mode-section of the table from the beginning
    * for a matching CRT2 mode if no mode was found yet.
    */
   for((*i) = 0; ; (*i)++) {
      if(SiS_Pr->SiS_RefIndex[RRTI + (*i)].ModeID != modeid) break;
      infoflag = SiS_Pr->SiS_RefIndex[RRTI + (*i)].Ext_InfoFlag;
      if(infoflag & checkmask) return true;
   }
   return false;
}

/*********************************************/
/*              Get rate index               */
/*********************************************/

unsigned short
SiS_GetRatePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
{
   unsigned short RRTI,i,backup_i;
   unsigned short modeflag,index,temp,backupindex;
   static const unsigned short LCDRefreshIndex[] = {
  0x00, 0x00, 0x01, 0x01,
  0x01, 0x01, 0x01, 0x01,
  0x01, 0x01, 0x01, 0x01,
  0x01, 0x01, 0x01, 0x01,
  0x00, 0x00, 0x00, 0x00
   };

   /* Do NOT check for UseCustomMode here, will skrew up FIFO */
   if(ModeNo == 0xfe) return 0;

   if(ModeNo <= 0x13) {
      modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
   } else {
      modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
   }

   if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
      if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
  if(modeflag & HalfDCLK) return 0;
      }
   }

   if(ModeNo < 0x14) return 0xFFFF;

   index = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x33) >> SiS_Pr->SiS_SelectCRT2Rate) & 0x0F;
   backupindex = index;

   if(index > 0) index--;

   if(SiS_Pr->SiS_SetFlag & ProgrammingCRT2) {
      if(SiS_Pr->SiS_VBType & VB_SISVB) {
  if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
     if(SiS_Pr->SiS_VBType & VB_NoLCD)   index = 0;
     else if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) index = backupindex = 0;
  }
  if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) {
     if(!(SiS_Pr->SiS_VBType & VB_NoLCD)) {
        temp = LCDRefreshIndex[SiS_GetBIOSLCDResInfo(SiS_Pr)];
        if(index > temp) index = temp;
     }
  }
      } else {
  if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA)) index = 0;
  if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
     if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) index = 0;
  }
      }
   }

   RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
   ModeNo = SiS_Pr->SiS_RefIndex[RRTI].ModeID;

   if(SiS_Pr->ChipType >= SIS_315H) {
      if(!(SiS_Pr->SiS_VBInfo & DriverMode)) {
  if( (SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_VESAID == 0x105) ||
      (SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_VESAID == 0x107) ) {
     if(backupindex <= 1) RRTI++;
  }
      }
   }

   i = 0;
   do {
      if(SiS_Pr->SiS_RefIndex[RRTI + i].ModeID != ModeNo) break;
      temp = SiS_Pr->SiS_RefIndex[RRTI + i].Ext_InfoFlag;
      temp &= ModeTypeMask;
      if(temp < SiS_Pr->SiS_ModeType) break;
      i++;
      index--;
   } while(index != 0xFFFF);

   if(!(SiS_Pr->SiS_VBInfo & SetCRT2ToRAMDAC)) {
      if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
  temp = SiS_Pr->SiS_RefIndex[RRTI + i - 1].Ext_InfoFlag;
  if(temp & InterlaceMode) i++;
      }
   }

   i--;

   if((SiS_Pr->SiS_SetFlag & ProgrammingCRT2) && (!(SiS_Pr->SiS_VBInfo & DisableCRT2Display))) {
      backup_i = i;
      if(!(SiS_AdjustCRT2Rate(SiS_Pr, ModeNo, ModeIdIndex, RRTI, &i))) {
  i = backup_i;
      }
   }

   return (RRTI + i);
}

/*********************************************/
/*            STORE CRT2 INFO in CR34        */
/*********************************************/

static void
SiS_SaveCRT2Info(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
{
   unsigned short temp1, temp2;

   /* Store CRT1 ModeNo in CR34 */
   SiS_SetReg(SiS_Pr->SiS_P3d4,0x34,ModeNo);
   temp1 = (SiS_Pr->SiS_VBInfo & SetInSlaveMode) >> 8;
   temp2 = ~(SetInSlaveMode >> 8);
   SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x31,temp2,temp1);
}

/*********************************************/
/*    HELPER: GET SOME DATA FROM BIOS ROM    */
/*********************************************/

#ifdef CONFIG_FB_SIS_300
static bool
SiS_CR36BIOSWord23b(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short temp,temp1;

   if(SiS_Pr->SiS_UseROM) {
      if((ROMAddr[0x233] == 0x12) && (ROMAddr[0x234] == 0x34)) {
  temp = 1 << ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4) & 0x0f);
  temp1 = SISGETROMW(0x23b);
  if(temp1 & temp) return true;
      }
   }
   return false;
}

static bool
SiS_CR36BIOSWord23d(struct SiS_Private *SiS_Pr)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short temp,temp1;

   if(SiS_Pr->SiS_UseROM) {
      if((ROMAddr[0x233] == 0x12) && (ROMAddr[0x234] == 0x34)) {
  temp = 1 << ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4) & 0x0f);
  temp1 = SISGETROMW(0x23d);
  if(temp1 & temp) return true;
      }
   }
   return false;
}
#endif

/*********************************************/
/*          HELPER: DELAY FUNCTIONS          */
/*********************************************/

void
SiS_DDC2Delay(struct SiS_Private *SiS_Pr, unsigned int delaytime)
{
   while (delaytime-- > 0)
      SiS_GetReg(SiS_Pr->SiS_P3c4, 0x05);
}

#if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
static void
SiS_GenericDelay(struct SiS_Private *SiS_Pr, unsigned short delay)
{
   SiS_DDC2Delay(SiS_Pr, delay * 36);
}
#endif

#ifdef CONFIG_FB_SIS_315
static void
SiS_LongDelay(struct SiS_Private *SiS_Pr, unsigned short delay)
{
   while(delay--) {
      SiS_GenericDelay(SiS_Pr, 6623);
   }
}
#endif

#if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
static void
SiS_ShortDelay(struct SiS_Private *SiS_Pr, unsigned short delay)
{
   while(delay--) {
      SiS_GenericDelay(SiS_Pr, 66);
   }
}
#endif

static void
SiS_PanelDelay(struct SiS_Private *SiS_Pr, unsigned short DelayTime)
{
#if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short PanelID, DelayIndex, Delay=0;
#endif

   if(SiS_Pr->ChipType < SIS_315H) {

#ifdef CONFIG_FB_SIS_300

      PanelID = SiS_GetReg(SiS_Pr->SiS_P3d4,0x36);
      if(SiS_Pr->SiS_VBType & VB_SISVB) {
  if(SiS_Pr->SiS_VBType & VB_SIS301) PanelID &= 0xf7;
  if(!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x18) & 0x10)) PanelID = 0x12;
      }
      DelayIndex = PanelID >> 4;
      if((DelayTime >= 2) && ((PanelID & 0x0f) == 1))  {
  Delay = 3;
      } else {
  if(DelayTime >= 2) DelayTime -= 2;
  if(!(DelayTime & 0x01)) {
     Delay = SiS_Pr->SiS_PanelDelayTbl[DelayIndex].timer[0];
  } else {
     Delay = SiS_Pr->SiS_PanelDelayTbl[DelayIndex].timer[1];
  }
  if(SiS_Pr->SiS_UseROM) {
     if(ROMAddr[0x220] & 0x40) {
        if(!(DelayTime & 0x01)) Delay = (unsigned short)ROMAddr[0x225];
        else              Delay = (unsigned short)ROMAddr[0x226];
     }
  }
      }
      SiS_ShortDelay(SiS_Pr, Delay);

#endif  /* CONFIG_FB_SIS_300 */

   } else {

#ifdef CONFIG_FB_SIS_315

      if((SiS_Pr->ChipType >= SIS_661)    ||
  (SiS_Pr->ChipType <= SIS_315PRO) ||
  (SiS_Pr->ChipType == SIS_330)    ||
  (SiS_Pr->SiS_ROMNew)) {

  if(!(DelayTime & 0x01)) {
     SiS_DDC2Delay(SiS_Pr, 0x1000);
  } else {
     SiS_DDC2Delay(SiS_Pr, 0x4000);
  }

      } else if (SiS_Pr->SiS_IF_DEF_LVDS == 1) {   /* 315 series, LVDS; Special */

  if(SiS_Pr->SiS_IF_DEF_CH70xx == 0) {
     PanelID = SiS_GetReg(SiS_Pr->SiS_P3d4,0x36);
     if(SiS_Pr->SiS_CustomT == CUT_CLEVO1400) {
        if(!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x1b) & 0x10)) PanelID = 0x12;
     }
     if(SiS_Pr->SiS_CustomT == CUT_COMPAQ1280) {
        DelayIndex = PanelID & 0x0f;
     } else {
        DelayIndex = PanelID >> 4;
     }
     if((DelayTime >= 2) && ((PanelID & 0x0f) == 1))  {
        Delay = 3;
     } else {
        if(DelayTime >= 2) DelayTime -= 2;
        if(!(DelayTime & 0x01)) {
    Delay = SiS_Pr->SiS_PanelDelayTblLVDS[DelayIndex].timer[0];
  } else {
    Delay = SiS_Pr->SiS_PanelDelayTblLVDS[DelayIndex].timer[1];
        }
        if((SiS_Pr->SiS_UseROM) && (!(SiS_Pr->SiS_ROMNew))) {
    if(ROMAddr[0x13c] & 0x40) {
       if(!(DelayTime & 0x01)) {
   Delay = (unsigned short)ROMAddr[0x17e];
       } else {
   Delay = (unsigned short)ROMAddr[0x17f];
       }
    }
        }
     }
     SiS_ShortDelay(SiS_Pr, Delay);
  }

      } else if(SiS_Pr->SiS_VBType & VB_SISVB) {   /* 315 series, all bridges */

  DelayIndex = SiS_GetReg(SiS_Pr->SiS_P3d4,0x36) >> 4;
  if(!(DelayTime & 0x01)) {
     Delay = SiS_Pr->SiS_PanelDelayTbl[DelayIndex].timer[0];
  } else {
     Delay = SiS_Pr->SiS_PanelDelayTbl[DelayIndex].timer[1];
  }
  Delay <<= 8;
  SiS_DDC2Delay(SiS_Pr, Delay);

      }

#endif /* CONFIG_FB_SIS_315 */

   }
}

#ifdef CONFIG_FB_SIS_315
static void
SiS_PanelDelayLoop(struct SiS_Private *SiS_Pr, unsigned short DelayTime, unsigned short DelayLoop)
{
   int i;
   for(i = 0; i < DelayLoop; i++) {
      SiS_PanelDelay(SiS_Pr, DelayTime);
   }
}
#endif

/*********************************************/
/*    HELPER: WAIT-FOR-RETRACE FUNCTIONS     */
/*********************************************/

void
SiS_WaitRetrace1(struct SiS_Private *SiS_Pr)
{
   unsigned short watchdog;

   if(SiS_GetReg(SiS_Pr->SiS_P3c4,0x1f) & 0xc0) return;
   if(!(SiS_GetReg(SiS_Pr->SiS_P3d4,0x17) & 0x80)) return;

   watchdog = 65535;
   while((SiS_GetRegByte(SiS_Pr->SiS_P3da) & 0x08) && --watchdog);
   watchdog = 65535;
   while((!(SiS_GetRegByte(SiS_Pr->SiS_P3da) & 0x08)) && --watchdog);
}

#if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
static void
SiS_WaitRetrace2(struct SiS_Private *SiS_Pr, unsigned short reg)
{
   unsigned short watchdog;

   watchdog = 65535;
   while((SiS_GetReg(SiS_Pr->SiS_Part1Port,reg) & 0x02) && --watchdog);
   watchdog = 65535;
   while((!(SiS_GetReg(SiS_Pr->SiS_Part1Port,reg) & 0x02)) && --watchdog);
}
#endif

static void
SiS_WaitVBRetrace(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType < SIS_315H) {
#ifdef CONFIG_FB_SIS_300
      if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
  if(!(SiS_GetReg(SiS_Pr->SiS_Part1Port,0x00) & 0x20)) return;
      }
      if(!(SiS_GetReg(SiS_Pr->SiS_Part1Port,0x00) & 0x80)) {
  SiS_WaitRetrace1(SiS_Pr);
      } else {
  SiS_WaitRetrace2(SiS_Pr, 0x25);
      }
#endif
   } else {
#ifdef CONFIG_FB_SIS_315
      if(!(SiS_GetReg(SiS_Pr->SiS_Part1Port,0x00) & 0x40)) {
  SiS_WaitRetrace1(SiS_Pr);
      } else {
  SiS_WaitRetrace2(SiS_Pr, 0x30);
      }
#endif
   }
}

static void
SiS_VBWait(struct SiS_Private *SiS_Pr)
{
   unsigned short tempal,temp,i,j;

   temp = 0;
   for(i = 0; i < 3; i++) {
     for(j = 0; j < 100; j++) {
        tempal = SiS_GetRegByte(SiS_Pr->SiS_P3da);
        if(temp & 0x01) {
    if((tempal & 0x08))  continue;
    else break;
        } else {
    if(!(tempal & 0x08)) continue;
    else break;
        }
     }
     temp ^= 0x01;
   }
}

static void
SiS_VBLongWait(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
      SiS_VBWait(SiS_Pr);
   } else {
      SiS_WaitRetrace1(SiS_Pr);
   }
}

/*********************************************/
/*               HELPER: MISC                */
/*********************************************/

#ifdef CONFIG_FB_SIS_300
static bool
SiS_Is301B(struct SiS_Private *SiS_Pr)
{
   if(SiS_GetReg(SiS_Pr->SiS_Part4Port,0x01) >= 0xb0) return true;
   return false;
}
#endif

static bool
SiS_CRT2IsLCD(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType == SIS_730) {
      if(SiS_GetReg(SiS_Pr->SiS_P3c4,0x13) & 0x20) return true;
   }
   if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x30) & 0x20) return true;
   return false;
}

bool
SiS_IsDualEdge(struct SiS_Private *SiS_Pr)
{
#ifdef CONFIG_FB_SIS_315
   if(SiS_Pr->ChipType >= SIS_315H) {
      if((SiS_Pr->ChipType != SIS_650) || (SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0xf0)) {
  if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & EnableDualEdge) return true;
      }
   }
#endif
   return false;
}

bool
SiS_IsVAMode(struct SiS_Private *SiS_Pr)
{
#ifdef CONFIG_FB_SIS_315
   unsigned short flag;

   if(SiS_Pr->ChipType >= SIS_315H) {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
      if((flag & EnableDualEdge) && (flag & SetToLCDA)) return true;
   }
#endif
   return false;
}

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsVAorLCD(struct SiS_Private *SiS_Pr)
{
   if(SiS_IsVAMode(SiS_Pr))  return true;
   if(SiS_CRT2IsLCD(SiS_Pr)) return true;
   return false;
}
#endif

static bool
SiS_IsDualLink(struct SiS_Private *SiS_Pr)
{
#ifdef CONFIG_FB_SIS_315
   if(SiS_Pr->ChipType >= SIS_315H) {
      if((SiS_CRT2IsLCD(SiS_Pr)) ||
         (SiS_IsVAMode(SiS_Pr))) {
  if(SiS_Pr->SiS_LCDInfo & LCDDualLink) return true;
      }
   }
#endif
   return false;
}

#ifdef CONFIG_FB_SIS_315
static bool
SiS_TVEnabled(struct SiS_Private *SiS_Pr)
{
   if((SiS_GetReg(SiS_Pr->SiS_Part2Port,0x00) & 0x0f) != 0x0c) return true;
   if(SiS_Pr->SiS_VBType & VB_SISYPBPR) {
      if(SiS_GetReg(SiS_Pr->SiS_Part2Port,0x4d) & 0x10) return true;
   }
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_LCDAEnabled(struct SiS_Private *SiS_Pr)
{
   if(SiS_GetReg(SiS_Pr->SiS_Part1Port,0x13) & 0x04) return true;
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_WeHaveBacklightCtrl(struct SiS_Private *SiS_Pr)
{
   if((SiS_Pr->ChipType >= SIS_315H) && (SiS_Pr->ChipType < SIS_661)) {
      if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x79) & 0x10) return true;
   }
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsNotM650orLater(struct SiS_Private *SiS_Pr)
{
   unsigned short flag;

   if(SiS_Pr->ChipType == SIS_650) {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0xf0;
      /* Check for revision != A0 only */
      if((flag == 0xe0) || (flag == 0xc0) ||
         (flag == 0xb0) || (flag == 0x90)) return false;
   } else if(SiS_Pr->ChipType >= SIS_661) return false;
   return true;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsYPbPr(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType >= SIS_315H) {
      /* YPrPb = 0x08 */
      if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & EnableCHYPbPr) return true;
   }
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsChScart(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType >= SIS_315H) {
      /* Scart = 0x04 */
      if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & EnableCHScart) return true;
   }
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsTVOrYPbPrOrScart(struct SiS_Private *SiS_Pr)
{
   unsigned short flag;

   if(SiS_Pr->ChipType >= SIS_315H) {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x30);
      if(flag & SetCRT2ToTV)        return true;
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
      if(flag & EnableCHYPbPr)      return true;  /* = YPrPb = 0x08 */
      if(flag & EnableCHScart)      return true;  /* = Scart = 0x04 - TW */
   } else {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x30);
      if(flag & SetCRT2ToTV)        return true;
   }
   return false;
}
#endif

#ifdef CONFIG_FB_SIS_315
static bool
SiS_IsLCDOrLCDA(struct SiS_Private *SiS_Pr)
{
   unsigned short flag;

   if(SiS_Pr->ChipType >= SIS_315H) {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x30);
      if(flag & SetCRT2ToLCD) return true;
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
      if(flag & SetToLCDA)    return true;
   } else {
      flag = SiS_GetReg(SiS_Pr->SiS_P3d4,0x30);
      if(flag & SetCRT2ToLCD) return true;
   }
   return false;
}
#endif

static bool
SiS_HaveBridge(struct SiS_Private *SiS_Pr)
{
   unsigned short flag;

   if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
      return true;
   } else if(SiS_Pr->SiS_VBType & VB_SISVB) {
      flag = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x00);
      if((flag == 1) || (flag == 2)) return true;
   }
   return false;
}

static bool
SiS_BridgeIsEnabled(struct SiS_Private *SiS_Pr)
{
   unsigned short flag;

   if(SiS_HaveBridge(SiS_Pr)) {
      flag = SiS_GetReg(SiS_Pr->SiS_Part1Port,0x00);
      if(SiS_Pr->ChipType < SIS_315H) {
 flag &= 0xa0;
 if((flag == 0x80) || (flag == 0x20)) return true;
      } else {
 flag &= 0x50;
 if((flag == 0x40) || (flag == 0x10)) return true;
      }
   }
   return false;
}

static bool
SiS_BridgeInSlavemode(struct SiS_Private *SiS_Pr)
{
   unsigned short flag1;

   flag1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x31);
   if(flag1 & (SetInSlaveMode >> 8)) return true;
   return false;
}

/*********************************************/
/*       GET VIDEO BRIDGE CONFIG INFO        */
/*********************************************/

/* Setup general purpose IO for Chrontel communication */
#ifdef CONFIG_FB_SIS_300
void
SiS_SetChrontelGPIO(struct SiS_Private *SiS_Pr, unsigned short myvbinfo)
{
   unsigned int   acpibase;
   unsigned short temp;

   if(!(SiS_Pr->SiS_ChSW)) return;

   acpibase = sisfb_read_lpc_pci_dword(SiS_Pr, 0x74);
   acpibase &= 0xFFFF;
   if(!acpibase) return;
   temp = SiS_GetRegShort((acpibase + 0x3c)); /* ACPI register 0x3c: GP Event 1 I/O mode select */
   temp &= 0xFEFF;
   SiS_SetRegShort((acpibase + 0x3c), temp);
   temp = SiS_GetRegShort((acpibase + 0x3c));
   temp = SiS_GetRegShort((acpibase + 0x3a)); /* ACPI register 0x3a: GP Pin Level (low/high) */
   temp &= 0xFEFF;
   if(!(myvbinfo & SetCRT2ToTV)) temp |= 0x0100;
   SiS_SetRegShort((acpibase + 0x3a), temp);
   temp = SiS_GetRegShort((acpibase + 0x3a));
}
#endif

void
SiS_GetVBInfo(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
  unsigned short ModeIdIndex, int checkcrt2mode)
{
   unsigned short tempax, tempbx, temp;
   unsigned short modeflag, resinfo = 0;

   SiS_Pr->SiS_SetFlag = 0;

   modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);

   SiS_Pr->SiS_ModeType = modeflag & ModeTypeMask;

   if((ModeNo > 0x13) && (!SiS_Pr->UseCustomMode)) {
      resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
   }

   tempbx = 0;

   if(SiS_HaveBridge(SiS_Pr)) {

 temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x30);
 tempbx |= temp;
 tempax = SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) << 8;
 tempax &= (DriverMode | LoadDACFlag | SetNotSimuMode | SetPALTV);
 tempbx |= tempax;

#ifdef CONFIG_FB_SIS_315
 if(SiS_Pr->ChipType >= SIS_315H) {
    if(SiS_Pr->SiS_VBType & VB_SISLCDA) {
       if(ModeNo == 0x03) {
   /* Mode 0x03 is never in driver mode */
   SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x31,0xbf);
       }
       if(!(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & (DriverMode >> 8))) {
   /* Reset LCDA setting if not driver mode */
   SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x38,0xfc);
       }
       if(IS_SIS650) {
   if(SiS_Pr->SiS_UseLCDA) {
      if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0xF0) {
         if((ModeNo <= 0x13) || (!(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & (DriverMode >> 8)))) {
     SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x38,(EnableDualEdge | SetToLCDA));
         }
      }
   }
       }
       temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
       if((temp & (EnableDualEdge | SetToLCDA)) == (EnableDualEdge | SetToLCDA)) {
   tempbx |= SetCRT2ToLCDA;
       }
    }

    if(SiS_Pr->ChipType >= SIS_661) { /* New CR layout */
       tempbx &= ~(SetCRT2ToYPbPr525750 | SetCRT2ToHiVision);
       if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & 0x04) {
   temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35) & 0xe0;
   if(temp == 0x60) tempbx |= SetCRT2ToHiVision;
   else if(SiS_Pr->SiS_VBType & VB_SISYPBPR) {
      tempbx |= SetCRT2ToYPbPr525750;
   }
       }
    }

    if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
       temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
       if(temp & SetToLCDA) {
   tempbx |= SetCRT2ToLCDA;
       }
       if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
   if(temp & EnableCHYPbPr) {
      tempbx |= SetCRT2ToCHYPbPr;
   }
       }
    }
 }

#endif  /* CONFIG_FB_SIS_315 */

        if(!(SiS_Pr->SiS_VBType & VB_SISVGA2)) {
    tempbx &= ~(SetCRT2ToRAMDAC);
 }

 if(SiS_Pr->SiS_VBType & VB_SISVB) {
    temp = SetCRT2ToSVIDEO   |
    SetCRT2ToAVIDEO   |
    SetCRT2ToSCART    |
    SetCRT2ToLCDA     |
    SetCRT2ToLCD      |
    SetCRT2ToRAMDAC   |
    SetCRT2ToHiVision |
    SetCRT2ToYPbPr525750;
 } else {
    if(SiS_Pr->ChipType >= SIS_315H) {
       if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
   temp = SetCRT2ToAVIDEO |
          SetCRT2ToSVIDEO |
          SetCRT2ToSCART  |
          SetCRT2ToLCDA   |
          SetCRT2ToLCD    |
          SetCRT2ToCHYPbPr;
       } else {
   temp = SetCRT2ToLCDA   |
          SetCRT2ToLCD;
       }
    } else {
       if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
   temp = SetCRT2ToTV | SetCRT2ToLCD;
       } else {
   temp = SetCRT2ToLCD;
       }
    }
 }

 if(!(tempbx & temp)) {
    tempax = DisableCRT2Display;
    tempbx = 0;
 }

 if(SiS_Pr->SiS_VBType & VB_SISVB) {

    unsigned short clearmask = ( DriverMode |
    DisableCRT2Display |
    LoadDACFlag     |
    SetNotSimuMode     |
    SetInSlaveMode     |
    SetPALTV     |
    SwitchCRT2    |
    SetSimuScanMode );

    if(tempbx & SetCRT2ToLCDA)        tempbx &= (clearmask | SetCRT2ToLCDA);
    if(tempbx & SetCRT2ToRAMDAC)      tempbx &= (clearmask | SetCRT2ToRAMDAC);
    if(tempbx & SetCRT2ToLCD)         tempbx &= (clearmask | SetCRT2ToLCD);
    if(tempbx & SetCRT2ToSCART)       tempbx &= (clearmask | SetCRT2ToSCART);
    if(tempbx & SetCRT2ToHiVision)    tempbx &= (clearmask | SetCRT2ToHiVision);
    if(tempbx & SetCRT2ToYPbPr525750) tempbx &= (clearmask | SetCRT2ToYPbPr525750);

 } else {

    if(SiS_Pr->ChipType >= SIS_315H) {
       if(tempbx & SetCRT2ToLCDA) {
   tempbx &= (0xFF00|SwitchCRT2|SetSimuScanMode);
       }
    }
    if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
       if(tempbx & SetCRT2ToTV) {
   tempbx &= (0xFF00|SetCRT2ToTV|SwitchCRT2|SetSimuScanMode);
       }
    }
    if(tempbx & SetCRT2ToLCD) {
       tempbx &= (0xFF00|SetCRT2ToLCD|SwitchCRT2|SetSimuScanMode);
    }
    if(SiS_Pr->ChipType >= SIS_315H) {
       if(tempbx & SetCRT2ToLCDA) {
          tempbx |= SetCRT2ToLCD;
       }
    }

 }

 if(tempax & DisableCRT2Display) {
    if(!(tempbx & (SwitchCRT2 | SetSimuScanMode))) {
       tempbx = SetSimuScanMode | DisableCRT2Display;
    }
 }

 if(!(tempbx & DriverMode)) tempbx |= SetSimuScanMode;

 /* LVDS/CHRONTEL (LCD/TV) and 301BDH (LCD) can only be slave in 8bpp modes */
 if(SiS_Pr->SiS_ModeType <= ModeVGA) {
    if( (SiS_Pr->SiS_IF_DEF_LVDS == 1) ||
        ((SiS_Pr->SiS_VBType & VB_NoLCD) && (tempbx & SetCRT2ToLCD)) ) {
       modeflag &= (~CRT2Mode);
    }
 }

 if(!(tempbx & SetSimuScanMode)) {
    if(tempbx & SwitchCRT2) {
       if((!(modeflag & CRT2Mode)) && (checkcrt2mode)) {
   if(resinfo != SIS_RI_1600x1200) {
      tempbx |= SetSimuScanMode;
   }
              }
    } else {
       if(SiS_BridgeIsEnabled(SiS_Pr)) {
   if(!(tempbx & DriverMode)) {
      if(SiS_BridgeInSlavemode(SiS_Pr)) {
         tempbx |= SetSimuScanMode;
      }
   }
       }
    }
 }

 if(!(tempbx & DisableCRT2Display)) {
    if(tempbx & DriverMode) {
       if(tempbx & SetSimuScanMode) {
   if((!(modeflag & CRT2Mode)) && (checkcrt2mode)) {
      if(resinfo != SIS_RI_1600x1200) {
         tempbx |= SetInSlaveMode;
      }
   }
       }
    } else {
       tempbx |= SetInSlaveMode;
    }
 }

   }

   SiS_Pr->SiS_VBInfo = tempbx;

#ifdef CONFIG_FB_SIS_300
   if(SiS_Pr->ChipType == SIS_630) {
      SiS_SetChrontelGPIO(SiS_Pr, SiS_Pr->SiS_VBInfo);
   }
#endif

#if 0
   printk(KERN_DEBUG "sisfb: (init301: VBInfo= 0x%04x, SetFlag=0x%04x)\n",
      SiS_Pr->SiS_VBInfo, SiS_Pr->SiS_SetFlag);
#endif
}

/*********************************************/
/*           DETERMINE YPbPr MODE            */
/*********************************************/

void
SiS_SetYPbPr(struct SiS_Private *SiS_Pr)
{

   unsigned char temp;

   /* Note: This variable is only used on 30xLV systems.
    * CR38 has a different meaning on LVDS/CH7019 systems.
    * On 661 and later, these bits moved to CR35.
    *
    * On 301, 301B, only HiVision 1080i is supported.
    * On 30xLV, 301C, only YPbPr 1080i is supported.
    */

   SiS_Pr->SiS_YPbPr = 0;
   if(SiS_Pr->ChipType >= SIS_661) return;

   if(SiS_Pr->SiS_VBType) {
      if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {
  SiS_Pr->SiS_YPbPr = YPbPrHiVision;
      }
   }

   if(SiS_Pr->ChipType >= SIS_315H) {
      if(SiS_Pr->SiS_VBType & VB_SISYPBPR) {
  temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
  if(temp & 0x08) {
     switch((temp >> 4)) {
     case 0x00: SiS_Pr->SiS_YPbPr = YPbPr525i;     break;
     case 0x01: SiS_Pr->SiS_YPbPr = YPbPr525p;     break;
     case 0x02: SiS_Pr->SiS_YPbPr = YPbPr750p;     break;
     case 0x03: SiS_Pr->SiS_YPbPr = YPbPrHiVision; break;
     }
  }
      }
   }

}

/*********************************************/
/*           DETERMINE TVMode flag           */
/*********************************************/

void
SiS_SetTVMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
{
   unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
   unsigned short temp, temp1, resinfo = 0, romindex = 0;
   unsigned char  OutputSelect = *SiS_Pr->pSiS_OutputSelect;

   SiS_Pr->SiS_TVMode = 0;

   if(!(SiS_Pr->SiS_VBInfo & SetCRT2ToTV)) return;
   if(SiS_Pr->UseCustomMode) return;

   if(ModeNo > 0x13) {
      resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
   }

   if(SiS_Pr->ChipType < SIS_661) {

      if(SiS_Pr->SiS_VBInfo & SetPALTV) SiS_Pr->SiS_TVMode |= TVSetPAL;

      if(SiS_Pr->SiS_VBType & VB_SISVB) {
  temp = 0;
  if((SiS_Pr->ChipType == SIS_630) ||
     (SiS_Pr->ChipType == SIS_730)) {
     temp = 0x35;
     romindex = 0xfe;
  } else if(SiS_Pr->ChipType >= SIS_315H) {
     temp = 0x38;
     if(SiS_Pr->ChipType < XGI_20) {
        romindex = 0xf3;
        if(SiS_Pr->ChipType >= SIS_330) romindex = 0x11b;
     }
  }
  if(temp) {
     if(romindex && SiS_Pr->SiS_UseROM && (!(SiS_Pr->SiS_ROMNew))) {
        OutputSelect = ROMAddr[romindex];
        if(!(OutputSelect & EnablePALMN)) {
    SiS_SetRegAND(SiS_Pr->SiS_P3d4,temp,0x3F);
        }
     }
     temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,temp);
     if(SiS_Pr->SiS_TVMode & TVSetPAL) {
        if(temp1 & EnablePALM) {  /* 0x40 */
    SiS_Pr->SiS_TVMode |= TVSetPALM;
    SiS_Pr->SiS_TVMode &= ~TVSetPAL;
        } else if(temp1 & EnablePALN) { /* 0x80 */
    SiS_Pr->SiS_TVMode |= TVSetPALN;
        }
     } else {
        if(temp1 & EnableNTSCJ) { /* 0x40 */
    SiS_Pr->SiS_TVMode |= TVSetNTSCJ;
        }
     }
  }
  /* Translate HiVision/YPbPr to our new flags */
  if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {
     if(SiS_Pr->SiS_YPbPr == YPbPr750p)          SiS_Pr->SiS_TVMode |= TVSetYPbPr750p;
     else if(SiS_Pr->SiS_YPbPr == YPbPr525p)     SiS_Pr->SiS_TVMode |= TVSetYPbPr525p;
     else if(SiS_Pr->SiS_YPbPr == YPbPrHiVision) SiS_Pr->SiS_TVMode |= TVSetHiVision;
     else            SiS_Pr->SiS_TVMode |= TVSetYPbPr525i;
     if(SiS_Pr->SiS_TVMode & (TVSetYPbPr750p | TVSetYPbPr525p | TVSetYPbPr525i)) {
        SiS_Pr->SiS_VBInfo &= ~SetCRT2ToHiVision;
        SiS_Pr->SiS_VBInfo |= SetCRT2ToYPbPr525750;
     } else if(SiS_Pr->SiS_TVMode & TVSetHiVision) {
        SiS_Pr->SiS_TVMode |= TVSetPAL;
     }
  }
      } else if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
  if(SiS_Pr->SiS_CHOverScan) {
     if(SiS_Pr->SiS_IF_DEF_CH70xx == 1) {
        temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35);
        if((temp & TVOverScan) || (SiS_Pr->SiS_CHOverScan == 1)) {
    SiS_Pr->SiS_TVMode |= TVSetCHOverScan;
        }
     } else if(SiS_Pr->SiS_IF_DEF_CH70xx == 2) {
        temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x79);
        if((temp & 0x80) || (SiS_Pr->SiS_CHOverScan == 1)) {
    SiS_Pr->SiS_TVMode |= TVSetCHOverScan;
        }
     }
     if(SiS_Pr->SiS_CHSOverScan) {
        SiS_Pr->SiS_TVMode |= TVSetCHOverScan;
     }
  }
  if(SiS_Pr->SiS_IF_DEF_CH70xx == 2) {
     temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
     if(SiS_Pr->SiS_TVMode & TVSetPAL) {
        if(temp & EnablePALM)      SiS_Pr->SiS_TVMode |= TVSetPALM;
        else if(temp & EnablePALN) SiS_Pr->SiS_TVMode |= TVSetPALN;
     } else {
        if(temp & EnableNTSCJ) {
    SiS_Pr->SiS_TVMode |= TVSetNTSCJ;
        }
     }
  }
      }

   } else {  /* 661 and later */

      temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35);
      if(temp1 & 0x01) {
  SiS_Pr->SiS_TVMode |= TVSetPAL;
  if(temp1 & 0x08) {
     SiS_Pr->SiS_TVMode |= TVSetPALN;
  } else if(temp1 & 0x04) {
     if(SiS_Pr->SiS_VBType & VB_SISVB) {
        SiS_Pr->SiS_TVMode &= ~TVSetPAL;
     }
     SiS_Pr->SiS_TVMode |= TVSetPALM;
  }
      } else {
  if(temp1 & 0x02) {
     SiS_Pr->SiS_TVMode |= TVSetNTSCJ;
  }
      }
      if(SiS_Pr->SiS_IF_DEF_CH70xx == 2) {
  if(SiS_Pr->SiS_CHOverScan) {
     if((temp1 & 0x10) || (SiS_Pr->SiS_CHOverScan == 1)) {
        SiS_Pr->SiS_TVMode |= TVSetCHOverScan;
     }
  }
      }
      if(SiS_Pr->SiS_VBType & VB_SISVB) {
  if(SiS_Pr->SiS_VBInfo & SetCRT2ToYPbPr525750) {
     temp1 &= 0xe0;
     if(temp1 == 0x00)      SiS_Pr->SiS_TVMode |= TVSetYPbPr525i;
     else if(temp1 == 0x20) SiS_Pr->SiS_TVMode |= TVSetYPbPr525p;
     else if(temp1 == 0x40) SiS_Pr->SiS_TVMode |= TVSetYPbPr750p;
  } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {
     SiS_Pr->SiS_TVMode |= (TVSetHiVision | TVSetPAL);
  }
  if(SiS_Pr->SiS_VBInfo & (SetCRT2ToYPbPr525750 | SetCRT2ToHiVision)) {
     if(resinfo == SIS_RI_800x480 || resinfo == SIS_RI_1024x576 || resinfo == SIS_RI_1280x720) {
        SiS_Pr->SiS_TVMode |= TVAspect169;
     } else {
        temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x39);
        if(temp1 & 0x02) {
    if(SiS_Pr->SiS_TVMode & (TVSetYPbPr750p | TVSetHiVision)) {
       SiS_Pr->SiS_TVMode |= TVAspect169;
    } else {
       SiS_Pr->SiS_TVMode |= TVAspect43LB;
    }
        } else {
    SiS_Pr->SiS_TVMode |= TVAspect43;
        }
     }
  }
      }
   }

   if(SiS_Pr->SiS_VBInfo & SetCRT2ToSCART) SiS_Pr->SiS_TVMode |= TVSetPAL;

   if(SiS_Pr->SiS_VBType & VB_SISVB) {

      if(SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) {
  SiS_Pr->SiS_TVMode |= TVSetPAL;
  SiS_Pr->SiS_TVMode &= ~(TVSetPALM | TVSetPALN | TVSetNTSCJ);
      } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToYPbPr525750) {
  if(SiS_Pr->SiS_TVMode & (TVSetYPbPr525i | TVSetYPbPr525p | TVSetYPbPr750p)) {
     SiS_Pr->SiS_TVMode &= ~(TVSetPAL | TVSetNTSCJ | TVSetPALM | TVSetPALN);
  }
      }

      if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
  if(!(SiS_Pr->SiS_VBInfo & SetNotSimuMode)) {
     SiS_Pr->SiS_TVMode |= TVSetTVSimuMode;
  }
      }

      if(!(SiS_Pr->SiS_TVMode & TVSetPAL)) {
  if(resinfo == SIS_RI_1024x768) {
     if(SiS_Pr->SiS_TVMode & TVSetYPbPr525p) {
        SiS_Pr->SiS_TVMode |= TVSet525p1024;
     } else if(!(SiS_Pr->SiS_TVMode & (TVSetHiVision | TVSetYPbPr750p))) {
        SiS_Pr->SiS_TVMode |= TVSetNTSC1024;
     }
  }
      }

      SiS_Pr->SiS_TVMode |= TVRPLLDIV2XO;
      if((SiS_Pr->SiS_VBInfo & SetCRT2ToHiVision) &&
  (SiS_Pr->SiS_VBInfo & SetInSlaveMode)) {
  SiS_Pr->SiS_TVMode &= ~TVRPLLDIV2XO;
      } else if(SiS_Pr->SiS_TVMode & (TVSetYPbPr525p | TVSetYPbPr750p)) {
  SiS_Pr->SiS_TVMode &= ~TVRPLLDIV2XO;
      } else if(!(SiS_Pr->SiS_VBType & VB_SIS30xBLV)) {
  if(SiS_Pr->SiS_TVMode & TVSetTVSimuMode) {
     SiS_Pr->SiS_TVMode &= ~TVRPLLDIV2XO;
  }
      }

   }

   SiS_Pr->SiS_VBInfo &= ~SetPALTV;
}

/*********************************************/
/*               GET LCD INFO                */
/*********************************************/

static unsigned short
SiS_GetBIOSLCDResInfo(struct SiS_Private *SiS_Pr)
{
   unsigned short temp = SiS_Pr->SiS_LCDResInfo;
   /* Translate my LCDResInfo to BIOS value */
   switch(temp) {
   case Panel_1280x768_2: temp = Panel_1280x768;    break;
   case Panel_1280x800_2: temp = Panel_1280x800;    break;
   case Panel_1280x854:   temp = Panel661_1280x854; break;
   }
   return temp;
}

static void
SiS_GetLCDInfoBIOS(struct SiS_Private *SiS_Pr)
{
#ifdef CONFIG_FB_SIS_315
   unsigned char  *ROMAddr;
   unsigned short temp;

   if((ROMAddr = GetLCDStructPtr661(SiS_Pr))) {
      if((temp = SISGETROMW(6)) != SiS_Pr->PanelHT) {
  SiS_Pr->SiS_NeedRomModeData = true;
  SiS_Pr->PanelHT  = temp;
      }
      if((temp = SISGETROMW(8)) != SiS_Pr->PanelVT) {
  SiS_Pr->SiS_NeedRomModeData = true;
  SiS_Pr->PanelVT  = temp;
      }
      SiS_Pr->PanelHRS = SISGETROMW(10);
      SiS_Pr->PanelHRE = SISGETROMW(12);
      SiS_Pr->PanelVRS = SISGETROMW(14);
      SiS_Pr->PanelVRE = SISGETROMW(16);
      SiS_Pr->PanelVCLKIdx315 = VCLK_CUSTOM_315;
      SiS_Pr->SiS_VCLKData[VCLK_CUSTOM_315].CLOCK =
  SiS_Pr->SiS_VBVCLKData[VCLK_CUSTOM_315].CLOCK = (unsigned short)((unsigned char)ROMAddr[18]);
      SiS_Pr->SiS_VCLKData[VCLK_CUSTOM_315].SR2B =
  SiS_Pr->SiS_VBVCLKData[VCLK_CUSTOM_315].Part4_A = ROMAddr[19];
      SiS_Pr->SiS_VCLKData[VCLK_CUSTOM_315].SR2C =
  SiS_Pr->SiS_VBVCLKData[VCLK_CUSTOM_315].Part4_B = ROMAddr[20];

   }
#endif
}

static void
SiS_CheckScaling(struct SiS_Private *SiS_Pr, unsigned short resinfo,
   const unsigned char *nonscalingmodes)
{
   int i = 0;
   while(nonscalingmodes[i] != 0xff) {
      if(nonscalingmodes[i++] == resinfo) {
  if((SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) ||
     (SiS_Pr->UsePanelScaler == -1)) {
     SiS_Pr->SiS_LCDInfo |= DontExpandLCD;
  }
  break;
      }
   }
}

void
SiS_GetLCDResInfo(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
{
  unsigned short temp,modeflag,resinfo=0,modexres=0,modeyres=0;
  bool panelcanscale = false;
#ifdef CONFIG_FB_SIS_300
  unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
  static const unsigned char SiS300SeriesLCDRes[] =
          { 0,  1,  2,  3,  7,  4,  5,  8,
     0,  0, 10,  0,  0,  0,  0, 15 };
#endif
#ifdef CONFIG_FB_SIS_315
  unsigned char   *myptr = NULL;
#endif

  SiS_Pr->SiS_LCDResInfo  = 0;
  SiS_Pr->SiS_LCDTypeInfo = 0;
  SiS_Pr->SiS_LCDInfo     = 0;
  SiS_Pr->PanelHRS        = 999; /* HSync start */
  SiS_Pr->PanelHRE        = 999; /* HSync end */
  SiS_Pr->PanelVRS        = 999; /* VSync start */
  SiS_Pr->PanelVRE        = 999; /* VSync end */
  SiS_Pr->SiS_NeedRomModeData = false;

  /* Alternative 1600x1200@60 timing for 1600x1200 LCDA */
  SiS_Pr->Alternate1600x1200 = false;

  if(!(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToLCDA))) return;

  modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);

  if((ModeNo > 0x13) && (!SiS_Pr->UseCustomMode)) {
     resinfo = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_RESINFO;
     modexres = SiS_Pr->SiS_ModeResInfo[resinfo].HTotal;
     modeyres = SiS_Pr->SiS_ModeResInfo[resinfo].VTotal;
  }

  temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x36);

  /* For broken BIOSes: Assume 1024x768 */
  if(temp == 0) temp = 0x02;

  if((SiS_Pr->ChipType >= SIS_661) || (SiS_Pr->SiS_ROMNew)) {
     SiS_Pr->SiS_LCDTypeInfo = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x39) & 0x7c) >> 2;
  } else if((SiS_Pr->ChipType < SIS_315H) || (SiS_Pr->ChipType >= SIS_661)) {
     SiS_Pr->SiS_LCDTypeInfo = temp >> 4;
  } else {
     SiS_Pr->SiS_LCDTypeInfo = (temp & 0x0F) - 1;
  }
  temp &= 0x0f;
#ifdef CONFIG_FB_SIS_300
  if(SiS_Pr->ChipType < SIS_315H) {
     /* Very old BIOSes only know 7 sizes (NetVista 2179, 1.01g) */
     if(SiS_Pr->SiS_VBType & VB_SIS301) {
        if(temp < 0x0f) temp &= 0x07;
     }
     /* Translate 300 series LCDRes to 315 series for unified usage */
     temp = SiS300SeriesLCDRes[temp];
  }
#endif

  /* Translate to our internal types */
#ifdef CONFIG_FB_SIS_315
  if(SiS_Pr->ChipType == SIS_550) {
     if     (temp == Panel310_1152x768)  temp = Panel_320x240_2; /* Verified working */
     else if(temp == Panel310_320x240_2) temp = Panel_320x240_2;
     else if(temp == Panel310_320x240_3) temp = Panel_320x240_3;
  } else if(SiS_Pr->ChipType >= SIS_661) {
     if(temp == Panel661_1280x854)       temp = Panel_1280x854;
  }
#endif

  if(SiS_Pr->SiS_VBType & VB_SISLVDS) {  /* SiS LVDS */
     if(temp == Panel310_1280x768) {
        temp = Panel_1280x768_2;
     }
     if(SiS_Pr->SiS_ROMNew) {
 if(temp == Panel661_1280x800) {
    temp = Panel_1280x800_2;
 }
     }
  }

  SiS_Pr->SiS_LCDResInfo = temp;

#ifdef CONFIG_FB_SIS_300
  if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
     if(SiS_Pr->SiS_CustomT == CUT_BARCO1366) {
 SiS_Pr->SiS_LCDResInfo = Panel_Barco1366;
     } else if(SiS_Pr->SiS_CustomT == CUT_PANEL848) {
 SiS_Pr->SiS_LCDResInfo = Panel_848x480;
     } else if(SiS_Pr->SiS_CustomT == CUT_PANEL856) {
 SiS_Pr->SiS_LCDResInfo = Panel_856x480;
     }
  }
#endif

  if(SiS_Pr->SiS_VBType & VB_SISVB) {
     if(SiS_Pr->SiS_LCDResInfo < SiS_Pr->SiS_PanelMin301)
 SiS_Pr->SiS_LCDResInfo = SiS_Pr->SiS_PanelMin301;
  } else {
     if(SiS_Pr->SiS_LCDResInfo < SiS_Pr->SiS_PanelMinLVDS)
 SiS_Pr->SiS_LCDResInfo = SiS_Pr->SiS_PanelMinLVDS;
  }

  temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x37);
  SiS_Pr->SiS_LCDInfo = temp & ~0x000e;
  /* Need temp below! */

  /* These must/can't scale no matter what */
  switch(SiS_Pr->SiS_LCDResInfo) {
  case Panel_320x240_1:
  case Panel_320x240_2:
  case Panel_320x240_3:
  case Panel_1280x960:
      SiS_Pr->SiS_LCDInfo &= ~DontExpandLCD;
      break;
  case Panel_640x480:
      SiS_Pr->SiS_LCDInfo |= DontExpandLCD;
  }

  panelcanscale = (bool)(SiS_Pr->SiS_LCDInfo & DontExpandLCD);

  if(!SiS_Pr->UsePanelScaler)          SiS_Pr->SiS_LCDInfo &= ~DontExpandLCD;
  else if(SiS_Pr->UsePanelScaler == 1) SiS_Pr->SiS_LCDInfo |= DontExpandLCD;

  /* Dual link, Pass 1:1 BIOS default, etc. */
#ifdef CONFIG_FB_SIS_315
  if(SiS_Pr->ChipType >= SIS_661) {
     if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
 if(temp & 0x08) SiS_Pr->SiS_LCDInfo |= LCDPass11;
     }
     if(SiS_Pr->SiS_VBType & VB_SISDUALLINK) {
 if(SiS_Pr->SiS_ROMNew) {
    if(temp & 0x02) SiS_Pr->SiS_LCDInfo |= LCDDualLink;
 } else if((myptr = GetLCDStructPtr661(SiS_Pr))) {
    if(myptr[2] & 0x01) SiS_Pr->SiS_LCDInfo |= LCDDualLink;
 }
     }
  } else if(SiS_Pr->ChipType >= SIS_315H) {
     if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x39) & 0x01) SiS_Pr->SiS_LCDInfo |= LCDPass11;
     }
     if((SiS_Pr->SiS_ROMNew) && (!(SiS_Pr->PanelSelfDetected))) {
 SiS_Pr->SiS_LCDInfo &= ~(LCDRGB18Bit);
 temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35);
 if(temp & 0x01) SiS_Pr->SiS_LCDInfo |= LCDRGB18Bit;
 if(SiS_Pr->SiS_VBType & VB_SISDUALLINK) {
    if(temp & 0x02) SiS_Pr->SiS_LCDInfo |= LCDDualLink;
 }
     } else if(!(SiS_Pr->SiS_ROMNew)) {
 if(SiS_Pr->SiS_VBType & VB_SISDUALLINK) {
    if((SiS_Pr->SiS_CustomT == CUT_CLEVO1024) &&
       (SiS_Pr->SiS_LCDResInfo == Panel_1024x768)) {
       SiS_Pr->SiS_LCDInfo |= LCDDualLink;
    }
    if((SiS_Pr->SiS_LCDResInfo == Panel_1280x1024) ||
       (SiS_Pr->SiS_LCDResInfo == Panel_1400x1050) ||
       (SiS_Pr->SiS_LCDResInfo == Panel_1600x1200) ||
       (SiS_Pr->SiS_LCDResInfo == Panel_1680x1050)) {
       SiS_Pr->SiS_LCDInfo |= LCDDualLink;
    }
 }
     }
  }
#endif

  /* Pass 1:1 */
  if((SiS_Pr->SiS_IF_DEF_LVDS == 1) || (SiS_Pr->SiS_VBType & VB_NoLCD)) {
     /* Always center screen on LVDS (if scaling is disabled) */
     SiS_Pr->SiS_LCDInfo &= ~LCDPass11;
  } else if(SiS_Pr->SiS_VBType & VB_SISVB) {
     if(SiS_Pr->SiS_VBType & VB_SISLVDS) {
 /* Always center screen on SiS LVDS (if scaling is disabled) */
 SiS_Pr->SiS_LCDInfo &= ~LCDPass11;
     } else {
 /* By default, pass 1:1 on SiS TMDS (if scaling is supported) */
 if(panelcanscale)             SiS_Pr->SiS_LCDInfo |= LCDPass11;
 if(SiS_Pr->CenterScreen == 1) SiS_Pr->SiS_LCDInfo &= ~LCDPass11;
     }
  }

  SiS_Pr->PanelVCLKIdx300 = VCLK65_300;
  SiS_Pr->PanelVCLKIdx315 = VCLK108_2_315;

  switch(SiS_Pr->SiS_LCDResInfo) {
     case Panel_320x240_1:
     case Panel_320x240_2:
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