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/config.h>
  34 #include <linux/version.h>
  35 #include <linux/types.h>
  36 #include <linux/fb.h>
  37
  38 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
  39 int             sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
  40                         unsigned char modeno, unsigned char rateindex);
  41 int             sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
  42                         unsigned char rateindex, struct fb_var_screeninfo *var);
  43 #endif
  44 BOOLEAN         sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
  45                         int *htotal, int *vtotal, unsigned char rateindex);
  46
  47 extern BOOLEAN  SiSInitPtr(struct SiS_Private *SiS_Pr);
  48 extern BOOLEAN  SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
  49                         unsigned short *ModeIdIndex);
  50 extern void     SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
  51                         int xres, int yres, struct fb_var_screeninfo *var, BOOLEAN writeres);
  52
  53 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
  54 int
  55 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
  56                         unsigned char rateindex)
  57 {
  58     unsigned short ModeNo = modeno;
  59     unsigned short ModeIdIndex = 0, ClockIndex = 0;
  60     unsigned short RRTI = 0;
  61     int Clock;
  62
  63     if(!SiSInitPtr(SiS_Pr)) return 65000;
  64
  65     if(rateindex > 0) rateindex--;
  66
  67 #ifdef SIS315H
  68     switch(ModeNo) {
  69     case 0x5a: ModeNo = 0x50; break;
  70     case 0x5b: ModeNo = 0x56;
  71     }
  72 #endif
  73
  74     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {;
  75        printk(KERN_ERR "Could not find mode %x\n", ModeNo);
  76        return 65000;
  77     }
  78
  79     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
  80
  81     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
  82        if(SiS_Pr->SiS_UseWide == 1) {
  83           /* Wide screen: Ignore rateindex */
  84           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE;
  85        } else {
  86           RRTI += rateindex;
  87           ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
  88        }
  89     } else {
  90        RRTI += rateindex;
  91        ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
  92     }
  93
  94     Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
  95
  96     return Clock;
  97 }
  98
  99 int
 100 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
 101                         unsigned char rateindex, struct fb_var_screeninfo *var)
 102 {
 103     unsigned short ModeNo = modeno;
 104     unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
 105     int            j;
 106
 107     if(!SiSInitPtr(SiS_Pr)) return 0;
 108
 109     if(rateindex > 0) rateindex--;
 110
 111 #ifdef SIS315H
 112     switch(ModeNo) {
 113        case 0x5a: ModeNo = 0x50; break;
 114        case 0x5b: ModeNo = 0x56;
 115     }
 116 #endif
 117
 118     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
 119
 120     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 121     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 122        if(SiS_Pr->SiS_UseWide == 1) {
 123           /* Wide screen: Ignore rateindex */
 124           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 125        } else {
 126           RRTI += rateindex;
 127           index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 128        }
 129     } else {
 130        RRTI += rateindex;
 131        index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 132     }
 133
 134     SiS_Generic_ConvertCRData(SiS_Pr,
 135                         (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0],
 136                         SiS_Pr->SiS_RefIndex[RRTI].XRes,
 137                         SiS_Pr->SiS_RefIndex[RRTI].YRes,
 138                         var, FALSE);
 139
 140     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
 141        var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
 142     else
 143        var->sync |= FB_SYNC_VERT_HIGH_ACT;
 144
 145     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
 146        var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
 147     else
 148        var->sync |= FB_SYNC_HOR_HIGH_ACT;
 149
 150     var->vmode = FB_VMODE_NONINTERLACED;
 151     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
 152        var->vmode = FB_VMODE_INTERLACED;
 153     else {
 154        j = 0;
 155        while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) {
 156           if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID ==
 157                           SiS_Pr->SiS_RefIndex[RRTI].ModeID) {
 158               if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) {
 159                   var->vmode = FB_VMODE_DOUBLE;
 160               }
 161               break;
 162           }
 163           j++;
 164        }
 165     }
 166
 167     if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
 168 #if 0  /* Do this? */
 169        var->upper_margin <<= 1;
 170        var->lower_margin <<= 1;
 171        var->vsync_len <<= 1;
 172 #endif
 173     } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
 174        var->upper_margin >>= 1;
 175        var->lower_margin >>= 1;
 176        var->vsync_len >>= 1;
 177     }
 178
 179     return 1;
 180 }
 181 #endif /* Linux >= 2.5 */
 182
 183 BOOLEAN
 184 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
 185                         int *vtotal, unsigned char rateindex)
 186 {
 187     unsigned short ModeNo = modeno;
 188     unsigned short ModeIdIndex = 0, CRT1Index = 0;
 189     unsigned short RRTI = 0;
 190     unsigned char  sr_data, cr_data, cr_data2;
 191
 192     if(!SiSInitPtr(SiS_Pr)) return FALSE;
 193
 194     if(rateindex > 0) rateindex--;
 195
 196 #ifdef SIS315H
 197     switch(ModeNo) {
 198        case 0x5a: ModeNo = 0x50; break;
 199        case 0x5b: ModeNo = 0x56;
 200     }
 201 #endif
 202
 203     if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return FALSE;
 204
 205     RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 206     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
 207        if(SiS_Pr->SiS_UseWide == 1) {
 208           /* Wide screen: Ignore rateindex */
 209           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
 210        } else {
 211           RRTI += rateindex;
 212           CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
 213        }
 214     } else {
 215        RRTI += rateindex;
 216        CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
 217     }
 218
 219     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14];
 220     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0];
 221     *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8;
 222
 223     sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13];
 224     cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6];
 225     cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7];
 226     *vtotal = ((cr_data & 0xFF) |
 227                ((unsigned short)(cr_data2 & 0x01) <<  8) |
 228                ((unsigned short)(cr_data2 & 0x20) <<  4) |
 229                ((unsigned short)(sr_data  & 0x01) << 10)) + 2;
 230
 231     if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)
 232        *vtotal *= 2;
 233
 234     return TRUE;
 235 }
 236
 237
 238