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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
  38 int             sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
  39                         unsigned char modeno, unsigned char rateindex);
  40 int             sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  41                         unsigned char rateindex, struct fb_var_screeninfo *var);
  42 #endif
  43 BOOLEAN         sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
  44                         int *htotal, int *vtotal, unsigned char rateindex);
  45
  46 extern BOOLEAN  SiSInitPtr(struct SiS_Private *SiS_Pr);
  47 extern BOOLEAN  SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
  48                         unsigned short *ModeIdIndex);
  49 extern void     SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
  50                         int xres, int yres, struct fb_var_screeninfo *var, BOOLEAN writeres);
  51
  52 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
  53 int
  54 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
  55                         unsigned char rateindex)
  56 {
  57     unsigned short ModeNo = modeno;
  58     unsigned short ModeIdIndex = 0, ClockIndex = 0;
  59     unsigned short RRTI = 0;
  60     int Clock;
  61
  62     if(!SiSInitPtr(SiS_Pr)) return 65000;
  63
  64     if(rateindex > 0) rateindex--;
  65
  66 #ifdef SIS315H
  67     switch(ModeNo) {
  68     case 0x5a: ModeNo = 0x50; break;
  69     case 0x5b: ModeNo = 0x56;
  70     }
  71 #endif
  72
  73     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {;
  74        printk(KERN_ERR "Could not find mode %x\n", ModeNo);
  75        return 65000;
  76     }
  77
  78     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
  79
  80     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
  81        if(SiS_Pr->SiS_UseWide == 1) {
  82           /* Wide screen: Ignore rateindex */
  83           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE;
  84        } else {
  85           RRTI += rateindex;
  86           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
  87        }
  88     } else {
  89        RRTI += rateindex;
  90        ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
  91     }
  92
  93     Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
  94
  95     return Clock;
  96 }
  97
  98 int
  99 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
 100                         unsigned char rateindex, struct fb_var_screeninfo *var)
 101 {
 102     unsigned short ModeNo = modeno;
 103     unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
 104     int            j;
 105
 106     if(!SiSInitPtr(SiS_Pr)) return 0;
 107
 108     if(rateindex > 0) rateindex--;
 109
 110 #ifdef SIS315H
 111     switch(ModeNo) {
 112        case 0x5a: ModeNo = 0x50; break;
 113        case 0x5b: ModeNo = 0x56;
 114     }
 115 #endif
 116
 117     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
 118
 119     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 120     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 121        if(SiS_Pr->SiS_UseWide == 1) {
 122           /* Wide screen: Ignore rateindex */
 123           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 124        } else {
 125           RRTI += rateindex;
 126           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 127        }
 128     } else {
 129        RRTI += rateindex;
 130        index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 131     }
 132
 133     SiS_Generic_ConvertCRData(SiS_Pr,
 134                         (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0],
 135                         SiS_Pr->SiS_RefIndex[RRTI].XRes,
 136                         SiS_Pr->SiS_RefIndex[RRTI].YRes,
 137                         var, FALSE);
 138
 139     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
 140        var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
 141     else
 142        var->sync |= FB_SYNC_VERT_HIGH_ACT;
 143
 144     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
 145        var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
 146     else
 147        var->sync |= FB_SYNC_HOR_HIGH_ACT;
 148
 149     var->vmode = FB_VMODE_NONINTERLACED;
 150     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
 151        var->vmode = FB_VMODE_INTERLACED;
 152     else {
 153        j = 0;
 154        while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) {
 155           if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID ==
 156                           SiS_Pr->SiS_RefIndex[RRTI].ModeID) {
 157               if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) {
 158                   var->vmode = FB_VMODE_DOUBLE;
 159               }
 160               break;
 161           }
 162           j++;
 163        }
 164     }
 165
 166     if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
 167 #if 0  /* Do this? */
 168        var->upper_margin <<= 1;
 169        var->lower_margin <<= 1;
 170        var->vsync_len <<= 1;
 171 #endif
 172     } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
 173        var->upper_margin >>= 1;
 174        var->lower_margin >>= 1;
 175        var->vsync_len >>= 1;
 176     }
 177
 178     return 1;
 179 }
 180 #endif /* Linux >= 2.5 */
 181
 182 BOOLEAN
 183 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
 184                         int *vtotal, unsigned char rateindex)
 185 {
 186     unsigned short ModeNo = modeno;
 187     unsigned short ModeIdIndex = 0, CRT1Index = 0;
 188     unsigned short RRTI = 0;
 189     unsigned char  sr_data, cr_data, cr_data2;
 190
 191     if(!SiSInitPtr(SiS_Pr)) return FALSE;
 192
 193     if(rateindex > 0) rateindex--;
 194
 195 #ifdef SIS315H
 196     switch(ModeNo) {
 197        case 0x5a: ModeNo = 0x50; break;
 198        case 0x5b: ModeNo = 0x56;
 199     }
 200 #endif
 201
 202     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return FALSE;
 203
 204     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 205     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 206        if(SiS_Pr->SiS_UseWide == 1) {
 207           /* Wide screen: Ignore rateindex */
 208           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 209        } else {
 210           RRTI += rateindex;
 211           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 212        }
 213     } else {
 214        RRTI += rateindex;
 215        CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 216     }
 217
 218     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14];
 219     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0];
 220     *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8;
 221
 222     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13];
 223     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6];
 224     cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7];
 225     *vtotal = ((cr_data & 0xFF) |
 226                ((unsigned short)(cr_data2 & 0x01) <<  8) |
 227                ((unsigned short)(cr_data2 & 0x20) <<  4) |
 228                ((unsigned short)(sr_data  & 0x01) << 10)) + 2;
 229
 230     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)
 231        *vtotal *= 2;
 232
 233     return TRUE;
 234 }
 235
 236
 237