drivers/video/sis/initextlfb.c

   1 /*
   2  * SiS 300/540/630[S]/730[S]
   3  * SiS 315[E|PRO]/550/[M]65x/[M]66x[F|M|G]X/[M]74x[GX]/330/[M]76x[GX]
   4  * XGI V3XT/V5/V8, Z7
   5  * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
   6  *
   7  * Linux kernel specific extensions to init.c/init301.c
   8  *
   9  * Copyright (C) 2001-2005 Thomas Winischhofer, Vienna, Austria.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the named License,
  14  * or any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
  24  *
  25  * Author:      Thomas Winischhofer <thomas@winischhofer.net>
  26  */
  27
  28 #include "osdef.h"
  29 #include "initdef.h"
  30 #include "vgatypes.h"
  31 #include "vstruct.h"
  32
  33 #include <linux/version.h>
  34 #include <linux/types.h>
  35 #include <linux/fb.h>
  36
  37 int             sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
  38                         unsigned char modeno, unsigned char rateindex);
  39 int             sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  40                         unsigned char rateindex, struct fb_var_screeninfo *var);
  41 bool            sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
  42                         int *htotal, int *vtotal, unsigned char rateindex);
  43
  44 extern bool     SiSInitPtr(struct SiS_Private *SiS_Pr);
  45 extern bool     SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
  46                         unsigned short *ModeIdIndex);
  47 extern void     SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
  48                         int xres, int yres, struct fb_var_screeninfo *var, bool writeres);
  49
  50 int
  51 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
  52                         unsigned char rateindex)
  53 {
  54     unsigned short ModeNo = modeno;
  55     unsigned short ModeIdIndex = 0, ClockIndex = 0;
  56     unsigned short RRTI = 0;
  57     int Clock;
  58
  59     if(!SiSInitPtr(SiS_Pr)) return 65000;
  60
  61     if(rateindex > 0) rateindex--;
  62
  63 #ifdef SIS315H
  64     switch(ModeNo) {
  65     case 0x5a: ModeNo = 0x50; break;
  66     case 0x5b: ModeNo = 0x56;
  67     }
  68 #endif
  69
  70     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {;
  71        printk(KERN_ERR "Could not find mode %x\n", ModeNo);
  72        return 65000;
  73     }
  74
  75     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
  76
  77     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
  78        if(SiS_Pr->SiS_UseWide == 1) {
  79           /* Wide screen: Ignore rateindex */
  80           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE;
  81        } else {
  82           RRTI += rateindex;
  83           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
  84        }
  85     } else {
  86        RRTI += rateindex;
  87        ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
  88     }
  89
  90     Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
  91
  92     return Clock;
  93 }
  94
  95 int
  96 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  97                         unsigned char rateindex, struct fb_var_screeninfo *var)
  98 {
  99     unsigned short ModeNo = modeno;
 100     unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
 101     int            j;
 102
 103     if(!SiSInitPtr(SiS_Pr)) return 0;
 104
 105     if(rateindex > 0) rateindex--;
 106
 107 #ifdef SIS315H
 108     switch(ModeNo) {
 109        case 0x5a: ModeNo = 0x50; break;
 110        case 0x5b: ModeNo = 0x56;
 111     }
 112 #endif
 113
 114     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
 115
 116     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 117     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 118        if(SiS_Pr->SiS_UseWide == 1) {
 119           /* Wide screen: Ignore rateindex */
 120           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 121        } else {
 122           RRTI += rateindex;
 123           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 124        }
 125     } else {
 126        RRTI += rateindex;
 127        index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 128     }
 129
 130     SiS_Generic_ConvertCRData(SiS_Pr,
 131                         (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0],
 132                         SiS_Pr->SiS_RefIndex[RRTI].XRes,
 133                         SiS_Pr->SiS_RefIndex[RRTI].YRes,
 134                         var, false);
 135
 136     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
 137        var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
 138     else
 139        var->sync |= FB_SYNC_VERT_HIGH_ACT;
 140
 141     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
 142        var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
 143     else
 144        var->sync |= FB_SYNC_HOR_HIGH_ACT;
 145
 146     var->vmode = FB_VMODE_NONINTERLACED;
 147     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
 148        var->vmode = FB_VMODE_INTERLACED;
 149     else {
 150        j = 0;
 151        while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) {
 152           if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID ==
 153                           SiS_Pr->SiS_RefIndex[RRTI].ModeID) {
 154               if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) {
 155                   var->vmode = FB_VMODE_DOUBLE;
 156               }
 157               break;
 158           }
 159           j++;
 160        }
 161     }
 162
 163     if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
 164 #if 0  /* Do this? */
 165        var->upper_margin <<= 1;
 166        var->lower_margin <<= 1;
 167        var->vsync_len <<= 1;
 168 #endif
 169     } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
 170        var->upper_margin >>= 1;
 171        var->lower_margin >>= 1;
 172        var->vsync_len >>= 1;
 173     }
 174
 175     return 1;
 176 }
 177
 178 bool
 179 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
 180                         int *vtotal, unsigned char rateindex)
 181 {
 182     unsigned short ModeNo = modeno;
 183     unsigned short ModeIdIndex = 0, CRT1Index = 0;
 184     unsigned short RRTI = 0;
 185     unsigned char  sr_data, cr_data, cr_data2;
 186
 187     if(!SiSInitPtr(SiS_Pr)) return false;
 188
 189     if(rateindex > 0) rateindex--;
 190
 191 #ifdef SIS315H
 192     switch(ModeNo) {
 193        case 0x5a: ModeNo = 0x50; break;
 194        case 0x5b: ModeNo = 0x56;
 195     }
 196 #endif
 197
 198     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
 199
 200     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 201     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 202        if(SiS_Pr->SiS_UseWide == 1) {
 203           /* Wide screen: Ignore rateindex */
 204           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 205        } else {
 206           RRTI += rateindex;
 207           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 208        }
 209     } else {
 210        RRTI += rateindex;
 211        CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 212     }
 213
 214     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14];
 215     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0];
 216     *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8;
 217
 218     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13];
 219     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6];
 220     cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7];
 221     *vtotal = ((cr_data & 0xFF) |
 222                ((unsigned short)(cr_data2 & 0x01) <<  8) |
 223                ((unsigned short)(cr_data2 & 0x20) <<  4) |
 224                ((unsigned short)(sr_data  & 0x01) << 10)) + 2;
 225
 226     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)
 227        *vtotal *= 2;
 228
 229     return true;
 230 }
 231
 232
 233