sis672 linux 显卡驱动

/* $XFree86$ */ /* $XdotOrg$ */ /* * 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. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #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 SIS300 #include "oem300.h" #endif #ifdef SIS315H #include "oem310.h" #endif #define SiS_I2CDELAY 1000 #define SiS_I2CDELAYSHORT 150 static unsigned short SiS_GetBIOSLCDResInfo(struct SiS_Private *SiS_Pr); #ifdef SIS_LINUX_KERNEL static void SiS_SetCH70xx(struct SiS_Private *SiS_Pr, unsigned short reg, unsigned char val); #endif /*********************************************/ /* 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); } #ifdef SIS_LINUX_KERNEL static #endif 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 SIS315H /* This function is used to get vesa timeing table offset in VBIOS*/ 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; if(SiS_Pr->ChipType >= SIS_761) { idx = (SiS_GetReg(SiS_Pr->SiS_P3d4,reg) & 0x1f) * 25; romindex = SISGETROMW(0x9a); if(romindex) { romindex += idx; myptr = &ROMAddr[romindex]; } } else { 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; } /* This function is used to get LCDID table offset in VBIOS*/ 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->ChipType < SIS_761) { 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); } } else { if((SiS_Pr->SiS_ROMNew) && ( (SiS_Pr->SiS_VBType & VB_SISLVDS) || (!SiS_Pr->PanelSelfDetected) )) { romptr = SISGETROMW(0x9c); romptr += ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x39) & 0x7C)>>2)*SiS_Pr->SiS661LCD2TableSize; } } return romptr; } #endif /*********************************************/ /* Adjust Rate for CRT2 */ /*********************************************/ static BOOLEAN 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) {