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>
32 #include <linux/types.h>
35 int sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
36 unsigned char modeno, unsigned char rateindex);
37 int sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
38 unsigned char rateindex, struct fb_var_screeninfo *var);
39 bool sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
40 int *htotal, int *vtotal, unsigned char rateindex);
42 extern bool SiSInitPtr(struct SiS_Private *SiS_Pr);
43 extern bool SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
44 unsigned short *ModeIdIndex);
45 extern void SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
46 int xres, int yres, struct fb_var_screeninfo *var, bool writeres);
49 sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr, unsigned char modeno,
50 unsigned char rateindex)
52 unsigned short ModeNo = modeno;
53 unsigned short ModeIdIndex = 0, ClockIndex = 0;
54 unsigned short RRTI = 0;
57 if(!SiSInitPtr(SiS_Pr)) return 65000;
59 if(rateindex > 0) rateindex--;
61 #ifdef CONFIG_FB_SIS_315
63 case 0x5a: ModeNo = 0x50; break;
64 case 0x5b: ModeNo = 0x56;
68 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) {
69 printk(KERN_ERR "Could not find mode %x\n", ModeNo);
73 RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
75 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
76 if(SiS_Pr->SiS_UseWide == 1) {
77 /* Wide screen: Ignore rateindex */
78 ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_WIDE;
81 ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK_NORM;
85 ClockIndex = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRTVCLK;
88 Clock = SiS_Pr->SiS_VCLKData[ClockIndex].CLOCK * 1000;
94 sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
95 unsigned char rateindex, struct fb_var_screeninfo *var)
97 unsigned short ModeNo = modeno;
98 unsigned short ModeIdIndex = 0, index = 0, RRTI = 0;
101 if(!SiSInitPtr(SiS_Pr)) return 0;
103 if(rateindex > 0) rateindex--;
105 #ifdef CONFIG_FB_SIS_315
107 case 0x5a: ModeNo = 0x50; break;
108 case 0x5b: ModeNo = 0x56;
112 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return 0;
114 RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
115 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
116 if(SiS_Pr->SiS_UseWide == 1) {
117 /* Wide screen: Ignore rateindex */
118 index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
121 index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
125 index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
128 SiS_Generic_ConvertCRData(SiS_Pr,
129 (unsigned char *)&SiS_Pr->SiS_CRT1Table[index].CR[0],
130 SiS_Pr->SiS_RefIndex[RRTI].XRes,
131 SiS_Pr->SiS_RefIndex[RRTI].YRes,
134 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x8000)
135 var->sync &= ~FB_SYNC_VERT_HIGH_ACT;
137 var->sync |= FB_SYNC_VERT_HIGH_ACT;
139 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x4000)
140 var->sync &= ~FB_SYNC_HOR_HIGH_ACT;
142 var->sync |= FB_SYNC_HOR_HIGH_ACT;
144 var->vmode = FB_VMODE_NONINTERLACED;
145 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & 0x0080)
146 var->vmode = FB_VMODE_INTERLACED;
149 while(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID != 0xff) {
150 if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeID ==
151 SiS_Pr->SiS_RefIndex[RRTI].ModeID) {
152 if(SiS_Pr->SiS_EModeIDTable[j].Ext_ModeFlag & DoubleScanMode) {
153 var->vmode = FB_VMODE_DOUBLE;
161 if((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
163 var->upper_margin <<= 1;
164 var->lower_margin <<= 1;
165 var->vsync_len <<= 1;
167 } else if((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
168 var->upper_margin >>= 1;
169 var->lower_margin >>= 1;
170 var->vsync_len >>= 1;
177 sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno, int *htotal,
178 int *vtotal, unsigned char rateindex)
180 unsigned short ModeNo = modeno;
181 unsigned short ModeIdIndex = 0, CRT1Index = 0;
182 unsigned short RRTI = 0;
183 unsigned char sr_data, cr_data, cr_data2;
185 if(!SiSInitPtr(SiS_Pr)) return false;
187 if(rateindex > 0) rateindex--;
189 #ifdef CONFIG_FB_SIS_315
191 case 0x5a: ModeNo = 0x50; break;
192 case 0x5b: ModeNo = 0x56;
196 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
198 RRTI = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
199 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & HaveWideTiming) {
200 if(SiS_Pr->SiS_UseWide == 1) {
201 /* Wide screen: Ignore rateindex */
202 CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_WIDE;
205 CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC_NORM;
209 CRT1Index = SiS_Pr->SiS_RefIndex[RRTI].Ext_CRT1CRTC;
212 sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[14];
213 cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[0];
214 *htotal = (((cr_data & 0xff) | ((unsigned short) (sr_data & 0x03) << 8)) + 5) * 8;
216 sr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[13];
217 cr_data = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[6];
218 cr_data2 = SiS_Pr->SiS_CRT1Table[CRT1Index].CR[7];
219 *vtotal = ((cr_data & 0xFF) |
220 ((unsigned short)(cr_data2 & 0x01) << 8) |
221 ((unsigned short)(cr_data2 & 0x20) << 4) |
222 ((unsigned short)(sr_data & 0x01) << 10)) + 2;
224 if(SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag & InterlaceMode)