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/types.h>
  34 #include <linux/fb.h>
  35
  36 int             sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
  37                         unsigned char modeno, unsigned char rateindex);
  38 int             sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  39                         unsigned char rateindex, struct fb_var_screeninfo *var);
  40 bool            sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
  41                         int *htotal, int *vtotal, unsigned char rateindex);
  42
  43 extern bool     SiSInitPtr(struct SiS_Private *SiS_Pr);
  44 extern bool     SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
  45                         unsigned short *ModeIdIndex);
  46 extern void     SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
  47                         int xres, int yres, struct fb_var_screeninfo *var, bool writeres);
  48
  49 int
  50 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
  51                         unsigned char rateindex)
  52 {
  53     unsigned short ModeNo = modeno;
  54     unsigned short ModeIdIndex = 0, ClockIndex = 0;
  55     unsigned short RRTI = 0;
  56     int Clock;
  57
  58     if(!SiSInitPtr(SiS_Pr)) return 65000;
  59
  60     if(rateindex > 0) rateindex--;
  61
  62 #ifdef SIS315H
  63     switch(ModeNo) {
  64     case 0x5a: ModeNo = 0x50; break;
  65     case 0x5b: ModeNo = 0x56;
  66     }
  67 #endif
  68
  69     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {;
  70        printk(KERN_ERR "Could not find mode %x\n", ModeNo);
  71        return 65000;
  72     }
  73
  74     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
  75
  76     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
  77        if(SiS_Pr->SiS_UseWide == 1) {
  78           /* Wide screen: Ignore rateindex */
  79           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE;
  80        } else {
  81           RRTI += rateindex;
  82           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
  83        }
  84     } else {
  85        RRTI += rateindex;
  86        ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
  87     }
  88
  89     Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
  90
  91     return Clock;
  92 }
  93
  94 int
  95 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  96                         unsigned char rateindex, struct fb_var_screeninfo *var)
  97 {
  98     unsigned short ModeNo = modeno;
  99     unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
 100     int            j;
 101
 102     if(!SiSInitPtr(SiS_Pr)) return 0;
 103
 104     if(rateindex > 0) rateindex--;
 105
 106 #ifdef SIS315H
 107     switch(ModeNo) {
 108        case 0x5a: ModeNo = 0x50; break;
 109        case 0x5b: ModeNo = 0x56;
 110     }
 111 #endif
 112
 113     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
 114
 115     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 116     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 117        if(SiS_Pr->SiS_UseWide == 1) {
 118           /* Wide screen: Ignore rateindex */
 119           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 120        } else {
 121           RRTI += rateindex;
 122           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 123        }
 124     } else {
 125        RRTI += rateindex;
 126        index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 127     }
 128
 129     SiS_Generic_ConvertCRData(SiS_Pr,
 130                         (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0],
 131                         SiS_Pr->SiS_RefIndex[RRTI].XRes,
 132                         SiS_Pr->SiS_RefIndex[RRTI].YRes,
 133                         var, false);
 134
 135     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
 136        var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
 137     else
 138        var->sync |= FB_SYNC_VERT_HIGH_ACT;
 139
 140     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
 141        var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
 142     else
 143        var->sync |= FB_SYNC_HOR_HIGH_ACT;
 144
 145     var->vmode = FB_VMODE_NONINTERLACED;
 146     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
 147        var->vmode = FB_VMODE_INTERLACED;
 148     else {
 149        j = 0;
 150        while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) {
 151           if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID ==
 152                           SiS_Pr->SiS_RefIndex[RRTI].ModeID) {
 153               if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) {
 154                   var->vmode = FB_VMODE_DOUBLE;
 155               }
 156               break;
 157           }
 158           j++;
 159        }
 160     }
 161
 162     if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
 163 #if 0  /* Do this? */
 164        var->upper_margin <<= 1;
 165        var->lower_margin <<= 1;
 166        var->vsync_len <<= 1;
 167 #endif
 168     } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
 169        var->upper_margin >>= 1;
 170        var->lower_margin >>= 1;
 171        var->vsync_len >>= 1;
 172     }
 173
 174     return 1;
 175 }
 176
 177 bool
 178 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
 179                         int *vtotal, unsigned char rateindex)
 180 {
 181     unsigned short ModeNo = modeno;
 182     unsigned short ModeIdIndex = 0, CRT1Index = 0;
 183     unsigned short RRTI = 0;
 184     unsigned char  sr_data, cr_data, cr_data2;
 185
 186     if(!SiSInitPtr(SiS_Pr)) return false;
 187
 188     if(rateindex > 0) rateindex--;
 189
 190 #ifdef SIS315H
 191     switch(ModeNo) {
 192        case 0x5a: ModeNo = 0x50; break;
 193        case 0x5b: ModeNo = 0x56;
 194     }
 195 #endif
 196
 197     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
 198
 199     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 200     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 201        if(SiS_Pr->SiS_UseWide == 1) {
 202           /* Wide screen: Ignore rateindex */
 203           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 204        } else {
 205           RRTI += rateindex;
 206           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 207        }
 208     } else {
 209        RRTI += rateindex;
 210        CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 211     }
 212
 213     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14];
 214     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0];
 215     *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8;
 216
 217     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13];
 218     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6];
 219     cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7];
 220     *vtotal = ((cr_data & 0xFF) |
 221                ((unsigned short)(cr_data2 & 0x01) <<  8) |
 222                ((unsigned short)(cr_data2 & 0x20) <<  4) |
 223                ((unsigned short)(sr_data  & 0x01) << 10)) + 2;
 224
 225     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)
 226        *vtotal *= 2;
 227
 228     return true;
 229 }
 230
 231
 232