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]
5 * frame buffer driver for Linux kernels >= 2.4.14 and >=2.6.3
7 * Linux kernel specific extensions to init.c/init301.c
9 * Copyright (C) 2001-2005 Thomas Winischhofer, Vienna, Austria.
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.
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.
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
25 * Author: Thomas Winischhofer <thomas@winischhofer.net>
33 #include <linux/version.h>
34 #include <linux/types.h>
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);
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);
51 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
52 unsigned char rateindex)
54 unsigned short ModeNo = modeno;
55 unsigned short ModeIdIndex = 0, ClockIndex = 0;
56 unsigned short RRTI = 0;
59 if(!SiSInitPtr(SiS_Pr)) return 65000;
61 if(rateindex > 0) rateindex--;
65 case 0x5a: ModeNo = 0x50; break;
66 case 0x5b: ModeNo = 0x56;
70 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {;
71 printk(KERN_ERR "Could not find mode %x\n", ModeNo);
75 RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
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;
83 ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
87 ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
90 Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
96 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
97 unsigned char rateindex, struct fb_var_screeninfo *var)
99 unsigned short ModeNo = modeno;
100 unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
103 if(!SiSInitPtr(SiS_Pr)) return 0;
105 if(rateindex > 0) rateindex--;
109 case 0x5a: ModeNo = 0x50; break;
110 case 0x5b: ModeNo = 0x56;
114 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
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;
123 index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
127 index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
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,
136 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
137 var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
139 var->sync |= FB_SYNC_VERT_HIGH_ACT;
141 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
142 var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
144 var->sync |= FB_SYNC_HOR_HIGH_ACT;
146 var->vmode = FB_VMODE_NONINTERLACED;
147 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
148 var->vmode = FB_VMODE_INTERLACED;
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;
163 if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
165 var->upper_margin <<= 1;
166 var->lower_margin <<= 1;
167 var->vsync_len <<= 1;
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;
179 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
180 int *vtotal, unsigned char rateindex)
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;
187 if(!SiSInitPtr(SiS_Pr)) return false;
189 if(rateindex > 0) rateindex--;
193 case 0x5a: ModeNo = 0x50; break;
194 case 0x5b: ModeNo = 0x56;
198 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
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;
207 CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
211 CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
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;
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;
226 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)