From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/video/fbdev/sis/initextlfb.c | 218 +++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 drivers/video/fbdev/sis/initextlfb.c (limited to 'drivers/video/fbdev/sis/initextlfb.c') diff --git a/drivers/video/fbdev/sis/initextlfb.c b/drivers/video/fbdev/sis/initextlfb.c new file mode 100644 index 000000000..8129156f9 --- /dev/null +++ b/drivers/video/fbdev/sis/initextlfb.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * SiS 300/540/630[S]/730[S] + * SiS 315[E|PRO]/550/[M]65x/[M]66x[F|M|G]X/[M]74x[GX]/330/[M]76x[GX] + * XGI V3XT/V5/V8, Z7 + * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3 + * + * Linux kernel specific extensions to init.c/init301.c + * + * Copyright (C) 2001-2005 Thomas Winischhofer, Vienna, Austria. + * + * Author: Thomas Winischhofer + */ + +#include "initdef.h" +#include "vgatypes.h" +#include "vstruct.h" + +#include +#include + +int sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, + unsigned char modeno, unsigned char rateindex); +int sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno, + unsigned char rateindex, struct fb_var_screeninfo *var); +bool sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, + int *htotal, int *vtotal, unsigned char rateindex); + +extern bool SiSInitPtr(struct SiS_Private *SiS_Pr); +extern bool SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo, + unsigned short *ModeIdIndex); +extern void SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, + int xres, int yres, struct fb_var_screeninfo *var, bool writeres); + +int +sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno, + unsigned char rateindex) +{ + unsigned short ModeNo = modeno; + unsigned short ModeIdIndex = 0, ClockIndex = 0; + unsigned short RRTI = 0; + int Clock; + + if(!SiSInitPtr(SiS_Pr)) return 65000; + + if(rateindex > 0) rateindex--; + +#ifdef CONFIG_FB_SIS_315 + switch(ModeNo) { + case 0x5a: ModeNo = 0x50; break; + case 0x5b: ModeNo = 0x56; + } +#endif + + if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) { + printk(KERN_ERR "Could not find mode %x\n", ModeNo); + return 65000; + } + + RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; + + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { + if(SiS_Pr->SiS_UseWide == 1) { + /* Wide screen: Ignore rateindex */ + ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE; + } else { + RRTI += rateindex; + ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM; + } + } else { + RRTI += rateindex; + ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK; + } + + Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000; + + return Clock; +} + +int +sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno, + unsigned char rateindex, struct fb_var_screeninfo *var) +{ + unsigned short ModeNo = modeno; + unsigned short ModeIdIndex = 0, index = 0, RRTI = 0; + int j; + + if(!SiSInitPtr(SiS_Pr)) return 0; + + if(rateindex > 0) rateindex--; + +#ifdef CONFIG_FB_SIS_315 + switch(ModeNo) { + case 0x5a: ModeNo = 0x50; break; + case 0x5b: ModeNo = 0x56; + } +#endif + + if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0; + + RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { + if(SiS_Pr->SiS_UseWide == 1) { + /* Wide screen: Ignore rateindex */ + index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE; + } else { + RRTI += rateindex; + index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM; + } + } else { + RRTI += rateindex; + index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC; + } + + SiS_Generic_ConvertCRData(SiS_Pr, + (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0], + SiS_Pr->SiS_RefIndex[RRTI].XRes, + SiS_Pr->SiS_RefIndex[RRTI].YRes, + var, false); + + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000) + var->sync &= ~FB_SYNC_VERT_HIGH_ACT; + else + var->sync |= FB_SYNC_VERT_HIGH_ACT; + + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000) + var->sync &= ~FB_SYNC_HOR_HIGH_ACT; + else + var->sync |= FB_SYNC_HOR_HIGH_ACT; + + var->vmode = FB_VMODE_NONINTERLACED; + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080) + var->vmode = FB_VMODE_INTERLACED; + else { + j = 0; + while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) { + if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID == + SiS_Pr->SiS_RefIndex[RRTI].ModeID) { + if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) { + var->vmode = FB_VMODE_DOUBLE; + } + break; + } + j++; + } + } + + if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) { +#if 0 /* Do this? */ + var->upper_margin <<= 1; + var->lower_margin <<= 1; + var->vsync_len <<= 1; +#endif + } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) { + var->upper_margin >>= 1; + var->lower_margin >>= 1; + var->vsync_len >>= 1; + } + + return 1; +} + +bool +sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal, + int *vtotal, unsigned char rateindex) +{ + unsigned short ModeNo = modeno; + unsigned short ModeIdIndex = 0, CRT1Index = 0; + unsigned short RRTI = 0; + unsigned char sr_data, cr_data, cr_data2; + + if(!SiSInitPtr(SiS_Pr)) return false; + + if(rateindex > 0) rateindex--; + +#ifdef CONFIG_FB_SIS_315 + switch(ModeNo) { + case 0x5a: ModeNo = 0x50; break; + case 0x5b: ModeNo = 0x56; + } +#endif + + if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false; + + RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex; + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) { + if(SiS_Pr->SiS_UseWide == 1) { + /* Wide screen: Ignore rateindex */ + CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE; + } else { + RRTI += rateindex; + CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM; + } + } else { + RRTI += rateindex; + CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC; + } + + sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14]; + cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0]; + *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8; + + sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13]; + cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6]; + cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7]; + *vtotal = ((cr_data & 0xFF) | + ((unsigned short)(cr_data2 & 0x01) << 8) | + ((unsigned short)(cr_data2 & 0x20) << 4) | + ((unsigned short)(sr_data & 0x01) << 10)) + 2; + + if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode) + *vtotal *= 2; + + return true; +} + + + -- cgit v1.2.3