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-rw-r--r--drivers/video/sis/initextlfb.c238
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diff --git a/drivers/video/sis/initextlfb.c b/drivers/video/sis/initextlfb.c
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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)
39int sisfb_mode_rate_to_dclock(struct SiS_Private *SiS_Pr,
40 unsigned char modeno, unsigned char rateindex);
41int sisfb_mode_rate_to_ddata(struct SiS_Private *SiS_Pr, unsigned char modeno,
42 unsigned char rateindex, struct fb_var_screeninfo *var);
43#endif
44BOOLEAN sisfb_gettotalfrommode(struct SiS_Private *SiS_Pr, unsigned char modeno,
45 int *htotal, int *vtotal, unsigned char rateindex);
46
47extern BOOLEAN SiSInitPtr(struct SiS_Private *SiS_Pr);
48extern BOOLEAN SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
49 unsigned short *ModeIdIndex);
50extern 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)
54int
55sisfb_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
99int
100sisfb_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
183BOOLEAN
184sisfb_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