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218 lines
6.3 KiB
218 lines
6.3 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* SiS 300/540/630[S]/730[S] |
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* SiS 315[E|PRO]/550/[M]65x/[M]66x[F|M|G]X/[M]74x[GX]/330/[M]76x[GX] |
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* XGI V3XT/V5/V8, Z7 |
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* frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 |
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* |
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* Linux kernel specific extensions to init.c/init301.c |
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* |
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* Copyright (C) 2001-2005 Thomas Winischhofer, Vienna, Austria. |
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* |
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* Author: Thomas Winischhofer <[email protected]> |
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*/ |
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#include "initdef.h" |
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#include "vgatypes.h" |
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#include "vstruct.h" |
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#include <linux/types.h> |
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#include <linux/fb.h> |
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int sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, |
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unsigned char modeno, unsigned char rateindex); |
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int sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno, |
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unsigned char rateindex, struct fb_var_screeninfo *var); |
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bool sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, |
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int *htotal, int *vtotal, unsigned char rateindex); |
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extern bool SiSInitPtr(struct SiS_Private *SiS_Pr); |
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extern bool SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo, |
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unsigned short *ModeIdIndex); |
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extern void SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, |
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int xres, int yres, struct fb_var_screeninfo *var, bool writeres); |
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int |
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sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno, |
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unsigned char rateindex) |
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{ |
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unsigned short ModeNo = modeno; |
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unsigned short ModeIdIndex = 0, ClockIndex = 0; |
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unsigned short RRTI = 0; |
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int Clock; |
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if(!SiSInitPtr(SiS_Pr)) return 65000; |
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if(rateindex > 0) rateindex--; |
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#ifdef CONFIG_FB_SIS_315 |
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switch(ModeNo) { |
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case 0x5a: ModeNo = 0x50; break; |
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case 0x5b: ModeNo = 0x56; |
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} |
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#endif |
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if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) { |
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printk(KERN_ERR "Could not find mode %x\n", ModeNo); |
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return 65000; |
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} |
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RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { |
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if(SiS_Pr->SiS_UseWide == 1) { |
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/* Wide screen: Ignore rateindex */ |
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ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE; |
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} else { |
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RRTI += rateindex; |
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ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM; |
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} |
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} else { |
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RRTI += rateindex; |
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ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK; |
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} |
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Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000; |
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return Clock; |
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} |
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int |
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sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno, |
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unsigned char rateindex, struct fb_var_screeninfo *var) |
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{ |
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unsigned short ModeNo = modeno; |
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unsigned short ModeIdIndex = 0, index = 0, RRTI = 0; |
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int j; |
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if(!SiSInitPtr(SiS_Pr)) return 0; |
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if(rateindex > 0) rateindex--; |
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#ifdef CONFIG_FB_SIS_315 |
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switch(ModeNo) { |
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case 0x5a: ModeNo = 0x50; break; |
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case 0x5b: ModeNo = 0x56; |
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} |
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#endif |
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if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0; |
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RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { |
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if(SiS_Pr->SiS_UseWide == 1) { |
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/* Wide screen: Ignore rateindex */ |
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index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE; |
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} else { |
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RRTI += rateindex; |
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index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM; |
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} |
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} else { |
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RRTI += rateindex; |
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index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC; |
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} |
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SiS_Generic_ConvertCRData(SiS_Pr, |
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(unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0], |
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SiS_Pr->SiS_RefIndex[RRTI].XRes, |
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SiS_Pr->SiS_RefIndex[RRTI].YRes, |
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var, false); |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000) |
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var->sync &= ~FB_SYNC_VERT_HIGH_ACT; |
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else |
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var->sync |= FB_SYNC_VERT_HIGH_ACT; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000) |
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var->sync &= ~FB_SYNC_HOR_HIGH_ACT; |
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else |
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var->sync |= FB_SYNC_HOR_HIGH_ACT; |
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var->vmode = FB_VMODE_NONINTERLACED; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080) |
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var->vmode = FB_VMODE_INTERLACED; |
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else { |
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j = 0; |
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while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) { |
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if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID == |
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SiS_Pr->SiS_RefIndex[RRTI].ModeID) { |
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if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) { |
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var->vmode = FB_VMODE_DOUBLE; |
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} |
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break; |
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} |
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j++; |
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} |
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} |
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if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) { |
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#if 0 /* Do this? */ |
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var->upper_margin <<= 1; |
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var->lower_margin <<= 1; |
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var->vsync_len <<= 1; |
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#endif |
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} else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) { |
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var->upper_margin >>= 1; |
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var->lower_margin >>= 1; |
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var->vsync_len >>= 1; |
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} |
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return 1; |
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} |
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bool |
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sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal, |
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int *vtotal, unsigned char rateindex) |
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{ |
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unsigned short ModeNo = modeno; |
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unsigned short ModeIdIndex = 0, CRT1Index = 0; |
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unsigned short RRTI = 0; |
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unsigned char sr_data, cr_data, cr_data2; |
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if(!SiSInitPtr(SiS_Pr)) return false; |
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if(rateindex > 0) rateindex--; |
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#ifdef CONFIG_FB_SIS_315 |
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switch(ModeNo) { |
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case 0x5a: ModeNo = 0x50; break; |
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case 0x5b: ModeNo = 0x56; |
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} |
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#endif |
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if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false; |
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RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { |
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if(SiS_Pr->SiS_UseWide == 1) { |
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/* Wide screen: Ignore rateindex */ |
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CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE; |
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} else { |
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RRTI += rateindex; |
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CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM; |
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} |
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} else { |
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RRTI += rateindex; |
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CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC; |
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} |
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sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14]; |
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cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0]; |
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*htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8; |
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sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13]; |
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cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6]; |
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cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7]; |
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*vtotal = ((cr_data & 0xFF) | |
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((unsigned short)(cr_data2 & 0x01) << 8) | |
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((unsigned short)(cr_data2 & 0x20) << 4) | |
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((unsigned short)(sr_data & 0x01) << 10)) + 2; |
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if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode) |
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*vtotal *= 2; |
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return true; |
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} |
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