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/drivers/video/sis/init.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C | 3654 lines | 2881 code | 474 blank | 299 comment | 1070 complexity | 0446235e90d6fea09f8a38cd3ec6a989 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0 
    

  1. /* $XFree86$ */
    2. 

  2. /* $XdotOrg$ */
    3. 

  3. /*
    4. 

  4.  * Mode initializing code (CRT1 section) for
    5. 

  5.  * for SiS 300/305/540/630/730,
    6. 

  6.  *     SiS 315/550/[M]650/651/[M]661[FGM]X/[M]74x[GX]/330/[M]76x[GX],
    7. 

  7.  *     XGI Volari V3XT/V5/V8, Z7
    8. 

  8.  * (Universal module for Linux kernel framebuffer and X.org/XFree86 4.x)
    9. 

  9.  *
    10. 

  10.  * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
    11. 

  11.  *
    12. 

  12.  * If distributed as part of the Linux kernel, the following license terms
    13. 

  13.  * apply:
    14. 

  14.  *
    15. 

  15.  * * This program is free software; you can redistribute it and/or modify
    16. 

  16.  * * it under the terms of the GNU General Public License as published by
    17. 

  17.  * * the Free Software Foundation; either version 2 of the named License,
    18. 

  18.  * * or any later version.
    19. 

  19.  * *
    20. 

  20.  * * This program is distributed in the hope that it will be useful,
    21. 

  21.  * * but WITHOUT ANY WARRANTY; without even the implied warranty of
    22. 

  22.  * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    23. 

  23.  * * GNU General Public License for more details.
    24. 

  24.  * *
    25. 

  25.  * * You should have received a copy of the GNU General Public License
    26. 

  26.  * * along with this program; if not, write to the Free Software
    27. 

  27.  * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
    28. 

  28.  *
    29. 

  29.  * Otherwise, the following license terms apply:
    30. 

  30.  *
    31. 

  31.  * * Redistribution and use in source and binary forms, with or without
    32. 

  32.  * * modification, are permitted provided that the following conditions
    33. 

  33.  * * are met:
    34. 

  34.  * * 1) Redistributions of source code must retain the above copyright
    35. 

  35.  * *    notice, this list of conditions and the following disclaimer.
    36. 

  36.  * * 2) Redistributions in binary form must reproduce the above copyright
    37. 

  37.  * *    notice, this list of conditions and the following disclaimer in the
    38. 

  38.  * *    documentation and/or other materials provided with the distribution.
    39. 

  39.  * * 3) The name of the author may not be used to endorse or promote products
    40. 

  40.  * *    derived from this software without specific prior written permission.
    41. 

  41.  * *
    42. 

  42.  * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    43. 

  43.  * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    44. 

  44.  * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
    45. 

  45.  * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
    46. 

  46.  * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
    47. 

  47.  * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    48. 

  48.  * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    49. 

  49.  * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    50. 

  50.  * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    51. 

  51.  * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    52. 

  52.  *
    53. 

  53.  * Author: 	Thomas Winischhofer <thomas@winischhofer.net>
    54. 

  54.  *
    55. 

  55.  * Formerly based on non-functional code-fragements for 300 series by SiS, Inc.
    56. 

  56.  * Used by permission.
    57. 

  57.  */
    58. 

  58. 

  59. #include "init.h"
    60. 

  60. 

  61. #ifdef CONFIG_FB_SIS_300
    62. 

  62. #include "300vtbl.h"
    63. 

  63. #endif
    64. 

  64. 

  65. #ifdef CONFIG_FB_SIS_315
    66. 

  66. #include "310vtbl.h"
    67. 

  67. #endif
    68. 

  68. 

  69. #if defined(ALLOC_PRAGMA)
    70. 

  70. #pragma alloc_text(PAGE,SiSSetMode)
    71. 

  71. #endif
    72. 

  72. 

  73. /*********************************************/
    74. 

  74. /*         POINTER INITIALIZATION            */
    75. 

  75. /*********************************************/
    76. 

  76. 

  77. #if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
    78. 

  78. static void
    79. 

  79. InitCommonPointer(struct SiS_Private *SiS_Pr)
    80. 

  80. {
    81. 

  81.    SiS_Pr->SiS_SModeIDTable  = SiS_SModeIDTable;
    82. 

  82.    SiS_Pr->SiS_StResInfo     = SiS_StResInfo;
    83. 

  83.    SiS_Pr->SiS_ModeResInfo   = SiS_ModeResInfo;
    84. 

  84.    SiS_Pr->SiS_StandTable    = SiS_StandTable;
    85. 

  85. 

  86.    SiS_Pr->SiS_NTSCTiming     = SiS_NTSCTiming;
    87. 

  87.    SiS_Pr->SiS_PALTiming      = SiS_PALTiming;
    88. 

  88.    SiS_Pr->SiS_HiTVSt1Timing  = SiS_HiTVSt1Timing;
    89. 

  89.    SiS_Pr->SiS_HiTVSt2Timing  = SiS_HiTVSt2Timing;
    90. 

  90. 

  91.    SiS_Pr->SiS_HiTVExtTiming  = SiS_HiTVExtTiming;
    92. 

  92.    SiS_Pr->SiS_HiTVGroup3Data = SiS_HiTVGroup3Data;
    93. 

  93.    SiS_Pr->SiS_HiTVGroup3Simu = SiS_HiTVGroup3Simu;
    94. 

  94. #if 0
    95. 

  95.    SiS_Pr->SiS_HiTVTextTiming = SiS_HiTVTextTiming;
    96. 

  96.    SiS_Pr->SiS_HiTVGroup3Text = SiS_HiTVGroup3Text;
    97. 

  97. #endif
    98. 

  98. 

  99.    SiS_Pr->SiS_StPALData   = SiS_StPALData;
    100. 

  100.    SiS_Pr->SiS_ExtPALData  = SiS_ExtPALData;
    101. 

  101.    SiS_Pr->SiS_StNTSCData  = SiS_StNTSCData;
    102. 

  102.    SiS_Pr->SiS_ExtNTSCData = SiS_ExtNTSCData;
    103. 

  103.    SiS_Pr->SiS_St1HiTVData = SiS_StHiTVData;
    104. 

  104.    SiS_Pr->SiS_St2HiTVData = SiS_St2HiTVData;
    105. 

  105.    SiS_Pr->SiS_ExtHiTVData = SiS_ExtHiTVData;
    106. 

  106.    SiS_Pr->SiS_St525iData  = SiS_StNTSCData;
    107. 

  107.    SiS_Pr->SiS_St525pData  = SiS_St525pData;
    108. 

  108.    SiS_Pr->SiS_St750pData  = SiS_St750pData;
    109. 

  109.    SiS_Pr->SiS_Ext525iData = SiS_ExtNTSCData;
    110. 

  110.    SiS_Pr->SiS_Ext525pData = SiS_ExtNTSCData;
    111. 

  111.    SiS_Pr->SiS_Ext750pData = SiS_Ext750pData;
    112. 

  112. 

  113.    SiS_Pr->pSiS_OutputSelect = &SiS_OutputSelect;
    114. 

  114.    SiS_Pr->pSiS_SoftSetting  = &SiS_SoftSetting;
    115. 

  115. 

  116.    SiS_Pr->SiS_LCD1280x720Data      = SiS_LCD1280x720Data;
    117. 

  117.    SiS_Pr->SiS_StLCD1280x768_2Data  = SiS_StLCD1280x768_2Data;
    118. 

  118.    SiS_Pr->SiS_ExtLCD1280x768_2Data = SiS_ExtLCD1280x768_2Data;
    119. 

  119.    SiS_Pr->SiS_LCD1280x800Data      = SiS_LCD1280x800Data;
    120. 

  120.    SiS_Pr->SiS_LCD1280x800_2Data    = SiS_LCD1280x800_2Data;
    121. 

  121.    SiS_Pr->SiS_LCD1280x854Data      = SiS_LCD1280x854Data;
    122. 

  122.    SiS_Pr->SiS_LCD1280x960Data      = SiS_LCD1280x960Data;
    123. 

  123.    SiS_Pr->SiS_StLCD1400x1050Data   = SiS_StLCD1400x1050Data;
    124. 

  124.    SiS_Pr->SiS_ExtLCD1400x1050Data  = SiS_ExtLCD1400x1050Data;
    125. 

  125.    SiS_Pr->SiS_LCD1680x1050Data     = SiS_LCD1680x1050Data;
    126. 

  126.    SiS_Pr->SiS_StLCD1600x1200Data   = SiS_StLCD1600x1200Data;
    127. 

  127.    SiS_Pr->SiS_ExtLCD1600x1200Data  = SiS_ExtLCD1600x1200Data;
    128. 

  128.    SiS_Pr->SiS_NoScaleData          = SiS_NoScaleData;
    129. 

  129. 

  130.    SiS_Pr->SiS_LVDS320x240Data_1   = SiS_LVDS320x240Data_1;
    131. 

  131.    SiS_Pr->SiS_LVDS320x240Data_2   = SiS_LVDS320x240Data_2;
    132. 

  132.    SiS_Pr->SiS_LVDS640x480Data_1   = SiS_LVDS640x480Data_1;
    133. 

  133.    SiS_Pr->SiS_LVDS800x600Data_1   = SiS_LVDS800x600Data_1;
    134. 

  134.    SiS_Pr->SiS_LVDS1024x600Data_1  = SiS_LVDS1024x600Data_1;
    135. 

  135.    SiS_Pr->SiS_LVDS1024x768Data_1  = SiS_LVDS1024x768Data_1;
    136. 

  136. 

  137.    SiS_Pr->SiS_LVDSCRT1320x240_1     = SiS_LVDSCRT1320x240_1;
    138. 

  138.    SiS_Pr->SiS_LVDSCRT1320x240_2     = SiS_LVDSCRT1320x240_2;
    139. 

  139.    SiS_Pr->SiS_LVDSCRT1320x240_2_H   = SiS_LVDSCRT1320x240_2_H;
    140. 

  140.    SiS_Pr->SiS_LVDSCRT1320x240_3     = SiS_LVDSCRT1320x240_3;
    141. 

  141.    SiS_Pr->SiS_LVDSCRT1320x240_3_H   = SiS_LVDSCRT1320x240_3_H;
    142. 

  142.    SiS_Pr->SiS_LVDSCRT1640x480_1     = SiS_LVDSCRT1640x480_1;
    143. 

  143.    SiS_Pr->SiS_LVDSCRT1640x480_1_H   = SiS_LVDSCRT1640x480_1_H;
    144. 

  144. #if 0
    145. 

  145.    SiS_Pr->SiS_LVDSCRT11024x600_1    = SiS_LVDSCRT11024x600_1;
    146. 

  146.    SiS_Pr->SiS_LVDSCRT11024x600_1_H  = SiS_LVDSCRT11024x600_1_H;
    147. 

  147.    SiS_Pr->SiS_LVDSCRT11024x600_2    = SiS_LVDSCRT11024x600_2;
    148. 

  148.    SiS_Pr->SiS_LVDSCRT11024x600_2_H  = SiS_LVDSCRT11024x600_2_H;
    149. 

  149. #endif
    150. 

  150. 

  151.    SiS_Pr->SiS_CHTVUNTSCData = SiS_CHTVUNTSCData;
    152. 

  152.    SiS_Pr->SiS_CHTVONTSCData = SiS_CHTVONTSCData;
    153. 

  153. 

  154.    SiS_Pr->SiS_PanelMinLVDS   = Panel_800x600;    /* lowest value LVDS/LCDA */
    155. 

  155.    SiS_Pr->SiS_PanelMin301    = Panel_1024x768;   /* lowest value 301 */
    156. 

  156. }
    157. 

  157. #endif
    158. 

  158. 

  159. #ifdef CONFIG_FB_SIS_300
    160. 

  160. static void
    161. 

  161. InitTo300Pointer(struct SiS_Private *SiS_Pr)
    162. 

  162. {
    163. 

  163.    InitCommonPointer(SiS_Pr);
    164. 

  164. 

  165.    SiS_Pr->SiS_VBModeIDTable = SiS300_VBModeIDTable;
    166. 

  166.    SiS_Pr->SiS_EModeIDTable  = SiS300_EModeIDTable;
    167. 

  167.    SiS_Pr->SiS_RefIndex      = SiS300_RefIndex;
    168. 

  168.    SiS_Pr->SiS_CRT1Table     = SiS300_CRT1Table;
    169. 

  169.    if(SiS_Pr->ChipType == SIS_300) {
    170. 

  170.       SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_300; /* 300 */
    171. 

  171.    } else {
    172. 

  172.       SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_630; /* 630, 730 */
    173. 

  173.    }
    174. 

  174.    SiS_Pr->SiS_VCLKData      = SiS300_VCLKData;
    175. 

  175.    SiS_Pr->SiS_VBVCLKData    = (struct SiS_VBVCLKData *)SiS300_VCLKData;
    176. 

  176. 

  177.    SiS_Pr->SiS_SR15  = SiS300_SR15;
    178. 

  178. 

  179.    SiS_Pr->SiS_PanelDelayTbl     = SiS300_PanelDelayTbl;
    180. 

  180.    SiS_Pr->SiS_PanelDelayTblLVDS = SiS300_PanelDelayTbl;
    181. 

  181. 

  182.    SiS_Pr->SiS_ExtLCD1024x768Data   = SiS300_ExtLCD1024x768Data;
    183. 

  183.    SiS_Pr->SiS_St2LCD1024x768Data   = SiS300_St2LCD1024x768Data;
    184. 

  184.    SiS_Pr->SiS_ExtLCD1280x1024Data  = SiS300_ExtLCD1280x1024Data;
    185. 

  185.    SiS_Pr->SiS_St2LCD1280x1024Data  = SiS300_St2LCD1280x1024Data;
    186. 

  186. 

  187.    SiS_Pr->SiS_CRT2Part2_1024x768_1  = SiS300_CRT2Part2_1024x768_1;
    188. 

  188.    SiS_Pr->SiS_CRT2Part2_1024x768_2  = SiS300_CRT2Part2_1024x768_2;
    189. 

  189.    SiS_Pr->SiS_CRT2Part2_1024x768_3  = SiS300_CRT2Part2_1024x768_3;
    190. 

  190. 

  191.    SiS_Pr->SiS_CHTVUPALData  = SiS300_CHTVUPALData;
    192. 

  192.    SiS_Pr->SiS_CHTVOPALData  = SiS300_CHTVOPALData;
    193. 

  193.    SiS_Pr->SiS_CHTVUPALMData = SiS_CHTVUNTSCData;    /* not supported on 300 series */
    194. 

  194.    SiS_Pr->SiS_CHTVOPALMData = SiS_CHTVONTSCData;    /* not supported on 300 series */
    195. 

  195.    SiS_Pr->SiS_CHTVUPALNData = SiS300_CHTVUPALData;  /* not supported on 300 series */
    196. 

  196.    SiS_Pr->SiS_CHTVOPALNData = SiS300_CHTVOPALData;  /* not supported on 300 series */
    197. 

  197.    SiS_Pr->SiS_CHTVSOPALData = SiS300_CHTVSOPALData;
    198. 

  198. 

  199.    SiS_Pr->SiS_LVDS848x480Data_1   = SiS300_LVDS848x480Data_1;
    200. 

  200.    SiS_Pr->SiS_LVDS848x480Data_2   = SiS300_LVDS848x480Data_2;
    201. 

  201.    SiS_Pr->SiS_LVDSBARCO1024Data_1 = SiS300_LVDSBARCO1024Data_1;
    202. 

  202.    SiS_Pr->SiS_LVDSBARCO1366Data_1 = SiS300_LVDSBARCO1366Data_1;
    203. 

  203.    SiS_Pr->SiS_LVDSBARCO1366Data_2 = SiS300_LVDSBARCO1366Data_2;
    204. 

  204. 

  205.    SiS_Pr->SiS_PanelType04_1a = SiS300_PanelType04_1a;
    206. 

  206.    SiS_Pr->SiS_PanelType04_2a = SiS300_PanelType04_2a;
    207. 

  207.    SiS_Pr->SiS_PanelType04_1b = SiS300_PanelType04_1b;
    208. 

  208.    SiS_Pr->SiS_PanelType04_2b = SiS300_PanelType04_2b;
    209. 

  209. 

  210.    SiS_Pr->SiS_CHTVCRT1UNTSC = SiS300_CHTVCRT1UNTSC;
    211. 

  211.    SiS_Pr->SiS_CHTVCRT1ONTSC = SiS300_CHTVCRT1ONTSC;
    212. 

  212.    SiS_Pr->SiS_CHTVCRT1UPAL  = SiS300_CHTVCRT1UPAL;
    213. 

  213.    SiS_Pr->SiS_CHTVCRT1OPAL  = SiS300_CHTVCRT1OPAL;
    214. 

  214.    SiS_Pr->SiS_CHTVCRT1SOPAL = SiS300_CHTVCRT1SOPAL;
    215. 

  215.    SiS_Pr->SiS_CHTVReg_UNTSC = SiS300_CHTVReg_UNTSC;
    216. 

  216.    SiS_Pr->SiS_CHTVReg_ONTSC = SiS300_CHTVReg_ONTSC;
    217. 

  217.    SiS_Pr->SiS_CHTVReg_UPAL  = SiS300_CHTVReg_UPAL;
    218. 

  218.    SiS_Pr->SiS_CHTVReg_OPAL  = SiS300_CHTVReg_OPAL;
    219. 

  219.    SiS_Pr->SiS_CHTVReg_UPALM = SiS300_CHTVReg_UNTSC;  /* not supported on 300 series */
    220. 

  220.    SiS_Pr->SiS_CHTVReg_OPALM = SiS300_CHTVReg_ONTSC;  /* not supported on 300 series */
    221. 

  221.    SiS_Pr->SiS_CHTVReg_UPALN = SiS300_CHTVReg_UPAL;   /* not supported on 300 series */
    222. 

  222.    SiS_Pr->SiS_CHTVReg_OPALN = SiS300_CHTVReg_OPAL;   /* not supported on 300 series */
    223. 

  223.    SiS_Pr->SiS_CHTVReg_SOPAL = SiS300_CHTVReg_SOPAL;
    224. 

  224.    SiS_Pr->SiS_CHTVVCLKUNTSC = SiS300_CHTVVCLKUNTSC;
    225. 

  225.    SiS_Pr->SiS_CHTVVCLKONTSC = SiS300_CHTVVCLKONTSC;
    226. 

  226.    SiS_Pr->SiS_CHTVVCLKUPAL  = SiS300_CHTVVCLKUPAL;
    227. 

  227.    SiS_Pr->SiS_CHTVVCLKOPAL  = SiS300_CHTVVCLKOPAL;
    228. 

  228.    SiS_Pr->SiS_CHTVVCLKUPALM = SiS300_CHTVVCLKUNTSC;  /* not supported on 300 series */
    229. 

  229.    SiS_Pr->SiS_CHTVVCLKOPALM = SiS300_CHTVVCLKONTSC;  /* not supported on 300 series */
    230. 

  230.    SiS_Pr->SiS_CHTVVCLKUPALN = SiS300_CHTVVCLKUPAL;   /* not supported on 300 series */
    231. 

  231.    SiS_Pr->SiS_CHTVVCLKOPALN = SiS300_CHTVVCLKOPAL;   /* not supported on 300 series */
    232. 

  232.    SiS_Pr->SiS_CHTVVCLKSOPAL = SiS300_CHTVVCLKSOPAL;
    233. 

  233. }
    234. 

  234. #endif
    235. 

  235. 

  236. #ifdef CONFIG_FB_SIS_315
    237. 

  237. static void
    238. 

  238. InitTo310Pointer(struct SiS_Private *SiS_Pr)
    239. 

  239. {
    240. 

  240.    InitCommonPointer(SiS_Pr);
    241. 

  241. 

  242.    SiS_Pr->SiS_EModeIDTable  = SiS310_EModeIDTable;
    243. 

  243.    SiS_Pr->SiS_RefIndex      = SiS310_RefIndex;
    244. 

  244.    SiS_Pr->SiS_CRT1Table     = SiS310_CRT1Table;
    245. 

  245.    if(SiS_Pr->ChipType >= SIS_340) {
    246. 

  246.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_340;  /* 340 + XGI */
    247. 

  247.    } else if(SiS_Pr->ChipType >= SIS_761) {
    248. 

  248.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_761;  /* 761 - preliminary */
    249. 

  249.    } else if(SiS_Pr->ChipType >= SIS_760) {
    250. 

  250.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_760;  /* 760 */
    251. 

  251.    } else if(SiS_Pr->ChipType >= SIS_661) {
    252. 

  252.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_660;  /* 661/741 */
    253. 

  253.    } else if(SiS_Pr->ChipType == SIS_330) {
    254. 

  254.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_330;  /* 330 */
    255. 

  255.    } else if(SiS_Pr->ChipType > SIS_315PRO) {
    256. 

  256.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_650;  /* 550, 650, 740 */
    257. 

  257.    } else {
    258. 

  258.       SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_315;  /* 315 */
    259. 

  259.    }
    260. 

  260.    if(SiS_Pr->ChipType >= SIS_340) {
    261. 

  261.       SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1_340;
    262. 

  262.    } else {
    263. 

  263.       SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1;
    264. 

  264.    }
    265. 

  265.    SiS_Pr->SiS_VCLKData      = SiS310_VCLKData;
    266. 

  266.    SiS_Pr->SiS_VBVCLKData    = SiS310_VBVCLKData;
    267. 

  267. 

  268.    SiS_Pr->SiS_SR15  = SiS310_SR15;
    269. 

  269. 

  270.    SiS_Pr->SiS_PanelDelayTbl     = SiS310_PanelDelayTbl;
    271. 

  271.    SiS_Pr->SiS_PanelDelayTblLVDS = SiS310_PanelDelayTblLVDS;
    272. 

  272. 

  273.    SiS_Pr->SiS_St2LCD1024x768Data   = SiS310_St2LCD1024x768Data;
    274. 

  274.    SiS_Pr->SiS_ExtLCD1024x768Data   = SiS310_ExtLCD1024x768Data;
    275. 

  275.    SiS_Pr->SiS_St2LCD1280x1024Data  = SiS310_St2LCD1280x1024Data;
    276. 

  276.    SiS_Pr->SiS_ExtLCD1280x1024Data  = SiS310_ExtLCD1280x1024Data;
    277. 

  277. 

  278.    SiS_Pr->SiS_CRT2Part2_1024x768_1  = SiS310_CRT2Part2_1024x768_1;
    279. 

  279. 

  280.    SiS_Pr->SiS_CHTVUPALData  = SiS310_CHTVUPALData;
    281. 

  281.    SiS_Pr->SiS_CHTVOPALData  = SiS310_CHTVOPALData;
    282. 

  282.    SiS_Pr->SiS_CHTVUPALMData = SiS310_CHTVUPALMData;
    283. 

  283.    SiS_Pr->SiS_CHTVOPALMData = SiS310_CHTVOPALMData;
    284. 

  284.    SiS_Pr->SiS_CHTVUPALNData = SiS310_CHTVUPALNData;
    285. 

  285.    SiS_Pr->SiS_CHTVOPALNData = SiS310_CHTVOPALNData;
    286. 

  286.    SiS_Pr->SiS_CHTVSOPALData = SiS310_CHTVSOPALData;
    287. 

  287. 

  288.    SiS_Pr->SiS_CHTVCRT1UNTSC = SiS310_CHTVCRT1UNTSC;
    289. 

  289.    SiS_Pr->SiS_CHTVCRT1ONTSC = SiS310_CHTVCRT1ONTSC;
    290. 

  290.    SiS_Pr->SiS_CHTVCRT1UPAL  = SiS310_CHTVCRT1UPAL;
    291. 

  291.    SiS_Pr->SiS_CHTVCRT1OPAL  = SiS310_CHTVCRT1OPAL;
    292. 

  292.    SiS_Pr->SiS_CHTVCRT1SOPAL = SiS310_CHTVCRT1OPAL;
    293. 

  293. 

  294.    SiS_Pr->SiS_CHTVReg_UNTSC = SiS310_CHTVReg_UNTSC;
    295. 

  295.    SiS_Pr->SiS_CHTVReg_ONTSC = SiS310_CHTVReg_ONTSC;
    296. 

  296.    SiS_Pr->SiS_CHTVReg_UPAL  = SiS310_CHTVReg_UPAL;
    297. 

  297.    SiS_Pr->SiS_CHTVReg_OPAL  = SiS310_CHTVReg_OPAL;
    298. 

  298.    SiS_Pr->SiS_CHTVReg_UPALM = SiS310_CHTVReg_UPALM;
    299. 

  299.    SiS_Pr->SiS_CHTVReg_OPALM = SiS310_CHTVReg_OPALM;
    300. 

  300.    SiS_Pr->SiS_CHTVReg_UPALN = SiS310_CHTVReg_UPALN;
    301. 

  301.    SiS_Pr->SiS_CHTVReg_OPALN = SiS310_CHTVReg_OPALN;
    302. 

  302.    SiS_Pr->SiS_CHTVReg_SOPAL = SiS310_CHTVReg_OPAL;
    303. 

  303. 

  304.    SiS_Pr->SiS_CHTVVCLKUNTSC = SiS310_CHTVVCLKUNTSC;
    305. 

  305.    SiS_Pr->SiS_CHTVVCLKONTSC = SiS310_CHTVVCLKONTSC;
    306. 

  306.    SiS_Pr->SiS_CHTVVCLKUPAL  = SiS310_CHTVVCLKUPAL;
    307. 

  307.    SiS_Pr->SiS_CHTVVCLKOPAL  = SiS310_CHTVVCLKOPAL;
    308. 

  308.    SiS_Pr->SiS_CHTVVCLKUPALM = SiS310_CHTVVCLKUPALM;
    309. 

  309.    SiS_Pr->SiS_CHTVVCLKOPALM = SiS310_CHTVVCLKOPALM;
    310. 

  310.    SiS_Pr->SiS_CHTVVCLKUPALN = SiS310_CHTVVCLKUPALN;
    311. 

  311.    SiS_Pr->SiS_CHTVVCLKOPALN = SiS310_CHTVVCLKOPALN;
    312. 

  312.    SiS_Pr->SiS_CHTVVCLKSOPAL = SiS310_CHTVVCLKOPAL;
    313. 

  313. }
    314. 

  314. #endif
    315. 

  315. 

  316. bool
    317. 

  317. SiSInitPtr(struct SiS_Private *SiS_Pr)
    318. 

  318. {
    319. 

  319.    if(SiS_Pr->ChipType < SIS_315H) {
    320. 

  320. #ifdef CONFIG_FB_SIS_300
    321. 

  321.       InitTo300Pointer(SiS_Pr);
    322. 

  322. #else
    323. 

  323.       return false;
    324. 

  324. #endif
    325. 

  325.    } else {
    326. 

  326. #ifdef CONFIG_FB_SIS_315
    327. 

  327.       InitTo310Pointer(SiS_Pr);
    328. 

  328. #else
    329. 

  329.       return false;
    330. 

  330. #endif
    331. 

  331.    }
    332. 

  332.    return true;
    333. 

  333. }
    334. 

  334. 

  335. /*********************************************/
    336. 

  336. /*            HELPER: Get ModeID             */
    337. 

  337. /*********************************************/
    338. 

  338. 

  339. static
    340. 

  340. unsigned short
    341. 

  341. SiS_GetModeID(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
    342. 

  342. 		int Depth, bool FSTN, int LCDwidth, int LCDheight)
    343. 

  343. {
    344. 

  344.    unsigned short ModeIndex = 0;
    345. 

  345. 

  346.    switch(HDisplay)
    347. 

  347.    {
    348. 

  348. 	case 320:
    349. 

  349. 		if(VDisplay == 200) ModeIndex = ModeIndex_320x200[Depth];
    350. 

  350. 		else if(VDisplay == 240) {
    351. 

  351. 			if((VBFlags & CRT2_LCD) && (FSTN))
    352. 

  352. 				ModeIndex = ModeIndex_320x240_FSTN[Depth];
    353. 

  353. 			else
    354. 

  354. 				ModeIndex = ModeIndex_320x240[Depth];
    355. 

  355. 		}
    356. 

  356. 		break;
    357. 

  357. 	case 400:
    358. 

  358. 		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 800) && (LCDwidth >= 600))) {
    359. 

  359. 			if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
    360. 

  360. 		}
    361. 

  361. 		break;
    362. 

  362. 	case 512:
    363. 

  363. 		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 1024) && (LCDwidth >= 768))) {
    364. 

  364. 			if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
    365. 

  365. 		}
    366. 

  366. 		break;
    367. 

  367. 	case 640:
    368. 

  368. 		if(VDisplay == 480)      ModeIndex = ModeIndex_640x480[Depth];
    369. 

  369. 		else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
    370. 

  370. 		break;
    371. 

  371. 	case 720:
    372. 

  372. 		if(VDisplay == 480)      ModeIndex = ModeIndex_720x480[Depth];
    373. 

  373. 		else if(VDisplay == 576) ModeIndex = ModeIndex_720x576[Depth];
    374. 

  374. 		break;
    375. 

  375. 	case 768:
    376. 

  376. 		if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
    377. 

  377. 		break;
    378. 

  378. 	case 800:
    379. 

  379. 		if(VDisplay == 600)      ModeIndex = ModeIndex_800x600[Depth];
    380. 

  380. 		else if(VDisplay == 480) ModeIndex = ModeIndex_800x480[Depth];
    381. 

  381. 		break;
    382. 

  382. 	case 848:
    383. 

  383. 		if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
    384. 

  384. 		break;
    385. 

  385. 	case 856:
    386. 

  386. 		if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
    387. 

  387. 		break;
    388. 

  388. 	case 960:
    389. 

  389. 		if(VGAEngine == SIS_315_VGA) {
    390. 

  390. 			if(VDisplay == 540)      ModeIndex = ModeIndex_960x540[Depth];
    391. 

  391. 			else if(VDisplay == 600) ModeIndex = ModeIndex_960x600[Depth];
    392. 

  392. 		}
    393. 

  393. 		break;
    394. 

  394. 	case 1024:
    395. 

  395. 		if(VDisplay == 576)      ModeIndex = ModeIndex_1024x576[Depth];
    396. 

  396. 		else if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
    397. 

  397. 		else if(VGAEngine == SIS_300_VGA) {
    398. 

  398. 			if(VDisplay == 600) ModeIndex = ModeIndex_1024x600[Depth];
    399. 

  399. 		}
    400. 

  400. 		break;
    401. 

  401. 	case 1152:
    402. 

  402. 		if(VDisplay == 864) ModeIndex = ModeIndex_1152x864[Depth];
    403. 

  403. 		if(VGAEngine == SIS_300_VGA) {
    404. 

  404. 			if(VDisplay == 768) ModeIndex = ModeIndex_1152x768[Depth];
    405. 

  405. 		}
    406. 

  406. 		break;
    407. 

  407. 	case 1280:
    408. 

  408. 		switch(VDisplay) {
    409. 

  409. 			case 720:
    410. 

  410. 				ModeIndex = ModeIndex_1280x720[Depth];
    411. 

  411. 				break;
    412. 

  412. 			case 768:
    413. 

  413. 				if(VGAEngine == SIS_300_VGA) {
    414. 

  414. 					ModeIndex = ModeIndex_300_1280x768[Depth];
    415. 

  415. 				} else {
    416. 

  416. 					ModeIndex = ModeIndex_310_1280x768[Depth];
    417. 

  417. 				}
    418. 

  418. 				break;
    419. 

  419. 			case 800:
    420. 

  420. 				if(VGAEngine == SIS_315_VGA) {
    421. 

  421. 					ModeIndex = ModeIndex_1280x800[Depth];
    422. 

  422. 				}
    423. 

  423. 				break;
    424. 

  424. 			case 854:
    425. 

  425. 				if(VGAEngine == SIS_315_VGA) {
    426. 

  426. 					ModeIndex = ModeIndex_1280x854[Depth];
    427. 

  427. 				}
    428. 

  428. 				break;
    429. 

  429. 			case 960:
    430. 

  430. 				ModeIndex = ModeIndex_1280x960[Depth];
    431. 

  431. 				break;
    432. 

  432. 			case 1024:
    433. 

  433. 				ModeIndex = ModeIndex_1280x1024[Depth];
    434. 

  434. 				break;
    435. 

  435. 		}
    436. 

  436. 		break;
    437. 

  437. 	case 1360:
    438. 

  438. 		if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
    439. 

  439. 		if(VGAEngine == SIS_300_VGA) {
    440. 

  440. 			if(VDisplay == 1024) ModeIndex = ModeIndex_300_1360x1024[Depth];
    441. 

  441. 		}
    442. 

  442. 		break;
    443. 

  443. 	case 1400:
    444. 

  444. 		if(VGAEngine == SIS_315_VGA) {
    445. 

  445. 			if(VDisplay == 1050) {
    446. 

  446. 				ModeIndex = ModeIndex_1400x1050[Depth];
    447. 

  447. 			}
    448. 

  448. 		}
    449. 

  449. 		break;
    450. 

  450. 	case 1600:
    451. 

  451. 		if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
    452. 

  452. 		break;
    453. 

  453. 	case 1680:
    454. 

  454. 		if(VGAEngine == SIS_315_VGA) {
    455. 

  455. 			if(VDisplay == 1050) ModeIndex = ModeIndex_1680x1050[Depth];
    456. 

  456. 		}
    457. 

  457. 		break;
    458. 

  458. 	case 1920:
    459. 

  459. 		if(VDisplay == 1440) ModeIndex = ModeIndex_1920x1440[Depth];
    460. 

  460. 		else if(VGAEngine == SIS_315_VGA) {
    461. 

  461. 			if(VDisplay == 1080) ModeIndex = ModeIndex_1920x1080[Depth];
    462. 

  462. 		}
    463. 

  463. 		break;
    464. 

  464. 	case 2048:
    465. 

  465. 		if(VDisplay == 1536) {
    466. 

  466. 			if(VGAEngine == SIS_300_VGA) {
    467. 

  467. 				ModeIndex = ModeIndex_300_2048x1536[Depth];
    468. 

  468. 			} else {
    469. 

  469. 				ModeIndex = ModeIndex_310_2048x1536[Depth];
    470. 

  470. 			}
    471. 

  471. 		}
    472. 

  472. 		break;
    473. 

  473.    }
    474. 

  474. 

  475.    return ModeIndex;
    476. 

  476. }
    477. 

  477. 

  478. unsigned short
    479. 

  479. SiS_GetModeID_LCD(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
    480. 

  480. 		int Depth, bool FSTN, unsigned short CustomT, int LCDwidth, int LCDheight,
    481. 

  481. 		unsigned int VBFlags2)
    482. 

  482. {
    483. 

  483.    unsigned short ModeIndex = 0;
    484. 

  484. 

  485.    if(VBFlags2 & (VB2_LVDS | VB2_30xBDH)) {
    486. 

  486. 

  487.       switch(HDisplay)
    488. 

  488.       {
    489. 

  489. 	case 320:
    490. 

  490. 	     if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
    491. 

  491. 		if(VDisplay == 200) {
    492. 

  492. 		   if(!FSTN) ModeIndex = ModeIndex_320x200[Depth];
    493. 

  493. 		} else if(VDisplay == 240) {
    494. 

  494. 		   if(!FSTN) ModeIndex = ModeIndex_320x240[Depth];
    495. 

  495. 		   else if(VGAEngine == SIS_315_VGA) {
    496. 

  496. 		      ModeIndex = ModeIndex_320x240_FSTN[Depth];
    497. 

  497. 		   }
    498. 

  498. 		}
    499. 

  499. 	     }
    500. 

  500. 	     break;
    501. 

  501. 	case 400:
    502. 

  502. 	     if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
    503. 

  503. 		if(!((VGAEngine == SIS_300_VGA) && (VBFlags2 & VB2_TRUMPION))) {
    504. 

  504. 		   if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
    505. 

  505. 		}
    506. 

  506. 	     }
    507. 

  507. 	     break;
    508. 

  508. 	case 512:
    509. 

  509. 	     if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
    510. 

  510. 		if(!((VGAEngine == SIS_300_VGA) && (VBFlags2 & VB2_TRUMPION))) {
    511. 

  511. 		   if(LCDwidth >= 1024 && LCDwidth != 1152 && LCDheight >= 768) {
    512. 

  512. 		      if(VDisplay == 384) {
    513. 

  513. 		         ModeIndex = ModeIndex_512x384[Depth];
    514. 

  514. 		      }
    515. 

  515. 		   }
    516. 

  516. 		}
    517. 

  517. 	     }
    518. 

  518. 	     break;
    519. 

  519. 	case 640:
    520. 

  520. 	     if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
    521. 

  521. 	     else if(VDisplay == 400) {
    522. 

  522. 		if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856))
    523. 

  523. 		   ModeIndex = ModeIndex_640x400[Depth];
    524. 

  524. 	     }
    525. 

  525. 	     break;
    526. 

  526. 	case 800:
    527. 

  527. 	     if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
    528. 

  528. 	     break;
    529. 

  529. 	case 848:
    530. 

  530. 	     if(CustomT == CUT_PANEL848) {
    531. 

  531. 	        if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
    532. 

  532. 	     }
    533. 

  533. 	     break;
    534. 

  534. 	case 856:
    535. 

  535. 	     if(CustomT == CUT_PANEL856) {
    536. 

  536. 	        if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
    537. 

  537. 	     }
    538. 

  538. 	     break;
    539. 

  539. 	case 1024:
    540. 

  540. 	     if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
    541. 

  541. 	     else if(VGAEngine == SIS_300_VGA) {
    542. 

  542. 		if((VDisplay == 600) && (LCDheight == 600)) {
    543. 

  543. 		   ModeIndex = ModeIndex_1024x600[Depth];
    544. 

  544. 		}
    545. 

  545. 	     }
    546. 

  546. 	     break;
    547. 

  547. 	case 1152:
    548. 

  548. 	     if(VGAEngine == SIS_300_VGA) {
    549. 

  549. 		if((VDisplay == 768) && (LCDheight == 768)) {
    550. 

  550. 		   ModeIndex = ModeIndex_1152x768[Depth];
    551. 

  551. 		}
    552. 

  552. 	     }
    553. 

  553. 	     break;
    554. 

  554.         case 1280:
    555. 

  555. 	     if(VDisplay == 1024) ModeIndex = ModeIndex_1280x1024[Depth];
    556. 

  556. 	     else if(VGAEngine == SIS_315_VGA) {
    557. 

  557. 		if((VDisplay == 768) && (LCDheight == 768)) {
    558. 

  558. 		   ModeIndex = ModeIndex_310_1280x768[Depth];
    559. 

  559. 		}
    560. 

  560. 	     }
    561. 

  561. 	     break;
    562. 

  562. 	case 1360:
    563. 

  563. 	     if(VGAEngine == SIS_300_VGA) {
    564. 

  564. 		if(CustomT == CUT_BARCO1366) {
    565. 

  565. 		   if(VDisplay == 1024) ModeIndex = ModeIndex_300_1360x1024[Depth];
    566. 

  566. 		}
    567. 

  567. 	     }
    568. 

  568. 	     if(CustomT == CUT_PANEL848) {
    569. 

  569. 		if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
    570. 

  570. 	     }
    571. 

  571. 	     break;
    572. 

  572. 	case 1400:
    573. 

  573. 	     if(VGAEngine == SIS_315_VGA) {
    574. 

  574. 		if(VDisplay == 1050) ModeIndex = ModeIndex_1400x1050[Depth];
    575. 

  575. 	     }
    576. 

  576. 	     break;
    577. 

  577. 	case 1600:
    578. 

  578. 	     if(VGAEngine == SIS_315_VGA) {
    579. 

  579. 		if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
    580. 

  580. 	     }
    581. 

  581. 	     break;
    582. 

  582.       }
    583. 

  583. 

  584.    } else if(VBFlags2 & VB2_SISBRIDGE) {
    585. 

  585. 

  586.       switch(HDisplay)
    587. 

  587.       {
    588. 

  588. 	case 320:
    589. 

  589. 	     if(VDisplay == 200)      ModeIndex = ModeIndex_320x200[Depth];
    590. 

  590. 	     else if(VDisplay == 240) ModeIndex = ModeIndex_320x240[Depth];
    591. 

  591. 	     break;
    592. 

  592. 	case 400:
    593. 

  593. 	     if(LCDwidth >= 800 && LCDheight >= 600) {
    594. 

  594. 		if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
    595. 

  595. 	     }
    596. 

  596. 	     break;
    597. 

  597. 	case 512:
    598. 

  598. 	     if(LCDwidth >= 1024 && LCDheight >= 768 && LCDwidth != 1152) {
    599. 

  599. 		if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
    600. 

  600. 	     }
    601. 

  601. 	     break;
    602. 

  602. 	case 640:
    603. 

  603. 	     if(VDisplay == 480)      ModeIndex = ModeIndex_640x480[Depth];
    604. 

  604. 	     else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
    605. 

  605. 	     break;
    606. 

  606. 	case 720:
    607. 

  607. 	     if(VGAEngine == SIS_315_VGA) {
    608. 

  608. 		if(VDisplay == 480)      ModeIndex = ModeIndex_720x480[Depth];
    609. 

  609. 		else if(VDisplay == 576) ModeIndex = ModeIndex_720x576[Depth];
    610. 

  610. 	     }
    611. 

  611. 	     break;
    612. 

  612. 	case 768:
    613. 

  613. 	     if(VGAEngine == SIS_315_VGA) {
    614. 

  614. 		if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
    615. 

  615. 	     }
    616. 

  616. 	     break;
    617. 

  617. 	case 800:
    618. 

  618. 	     if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
    619. 

  619. 	     if(VGAEngine == SIS_315_VGA) {
    620. 

  620. 		if(VDisplay == 480) ModeIndex = ModeIndex_800x480[Depth];
    621. 

  621. 	     }
    622. 

  622. 	     break;
    623. 

  623. 	case 848:
    624. 

  624. 	     if(VGAEngine == SIS_315_VGA) {
    625. 

  625. 		if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
    626. 

  626. 	     }
    627. 

  627. 	     break;
    628. 

  628. 	case 856:
    629. 

  629. 	     if(VGAEngine == SIS_315_VGA) {
    630. 

  630. 		if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
    631. 

  631. 	     }
    632. 

  632. 	     break;
    633. 

  633. 	case 960:
    634. 

  634. 	     if(VGAEngine == SIS_315_VGA) {
    635. 

  635. 		if(VDisplay == 540)      ModeIndex = ModeIndex_960x540[Depth];
    636. 

  636. 		else if(VDisplay == 600) ModeIndex = ModeIndex_960x600[Depth];
    637. 

  637. 	     }
    638. 

  638. 	     break;
    639. 

  639. 	case 1024:
    640. 

  640. 	     if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
    641. 

  641. 	     if(VGAEngine == SIS_315_VGA) {
    642. 

  642. 		if(VDisplay == 576) ModeIndex = ModeIndex_1024x576[Depth];
    643. 

  643. 	     }
    644. 

  644. 	     break;
    645. 

  645. 	case 1152:
    646. 

  646. 	     if(VGAEngine == SIS_315_VGA) {
    647. 

  647. 		if(VDisplay == 864) ModeIndex = ModeIndex_1152x864[Depth];
    648. 

  648. 	     }
    649. 

  649. 	     break;
    650. 

  650. 	case 1280:
    651. 

  651. 	     switch(VDisplay) {
    652. 

  652. 	     case 720:
    653. 

  653. 		ModeIndex = ModeIndex_1280x720[Depth];
    654. 

  654. 	     case 768:
    655. 

  655. 		if(VGAEngine == SIS_300_VGA) {
    656. 

  656. 		   ModeIndex = ModeIndex_300_1280x768[Depth];
    657. 

  657. 		} else {
    658. 

  658. 		   ModeIndex = ModeIndex_310_1280x768[Depth];
    659. 

  659. 		}
    660. 

  660. 		break;
    661. 

  661. 	     case 800:
    662. 

  662. 		if(VGAEngine == SIS_315_VGA) {
    663. 

  663. 		   ModeIndex = ModeIndex_1280x800[Depth];
    664. 

  664. 		}
    665. 

  665. 		break;
    666. 

  666. 	     case 854:
    667. 

  667. 		if(VGAEngine == SIS_315_VGA) {
    668. 

  668. 		   ModeIndex = ModeIndex_1280x854[Depth];
    669. 

  669. 		}
    670. 

  670. 		break;
    671. 

  671. 	     case 960:
    672. 

  672. 		ModeIndex = ModeIndex_1280x960[Depth];
    673. 

  673. 		break;
    674. 

  674. 	     case 1024:
    675. 

  675. 		ModeIndex = ModeIndex_1280x1024[Depth];
    676. 

  676. 		break;
    677. 

  677. 	     }
    678. 

  678. 	     break;
    679. 

  679. 	case 1360:
    680. 

  680. 	     if(VGAEngine == SIS_315_VGA) {  /* OVER1280 only? */
    681. 

  681. 		if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
    682. 

  682. 	     }
    683. 

  683. 	     break;
    684. 

  684. 	case 1400:
    685. 

  685. 	     if(VGAEngine == SIS_315_VGA) {
    686. 

  686. 		if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
    687. 

  687. 		   if(VDisplay == 1050) ModeIndex = ModeIndex_1400x1050[Depth];
    688. 

  688. 		}
    689. 

  689. 	     }
    690. 

  690. 	     break;
    691. 

  691. 	case 1600:
    692. 

  692. 	     if(VGAEngine == SIS_315_VGA) {
    693. 

  693. 		if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
    694. 

  694. 		   if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
    695. 

  695. 		}
    696. 

  696. 	     }
    697. 

  697. 	     break;
    698. 

  698. #ifndef VB_FORBID_CRT2LCD_OVER_1600
    699. 

  699. 	case 1680:
    700. 

  700. 	     if(VGAEngine == SIS_315_VGA) {
    701. 

  701. 		if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
    702. 

  702. 		   if(VDisplay == 1050) ModeIndex = ModeIndex_1680x1050[Depth];
    703. 

  703. 		}
    704. 

  704. 	     }
    705. 

  705. 	     break;
    706. 

  706. 	case 1920:
    707. 

  707. 	     if(VGAEngine == SIS_315_VGA) {
    708. 

  708. 		if(VBFlags2 & VB2_LCDOVER1600BRIDGE) {
    709. 

  709. 		   if(VDisplay == 1440) ModeIndex = ModeIndex_1920x1440[Depth];
    710. 

  710. 		}
    711. 

  711. 	     }
    712. 

  712. 	     break;
    713. 

  713. 	case 2048:
    714. 

  714. 	     if(VGAEngine == SIS_315_VGA) {
    715. 

  715. 		if(VBFlags2 & VB2_LCDOVER1600BRIDGE) {
    716. 

  716. 		   if(VDisplay == 1536) ModeIndex = ModeIndex_310_2048x1536[Depth];
    717. 

  717. 		}
    718. 

  718. 	     }
    719. 

  719. 	     break;
    720. 

  720. #endif
    721. 

  721.       }
    722. 

  722.    }
    723. 

  723. 

  724.    return ModeIndex;
    725. 

  725. }
    726. 

  726. 

  727. unsigned short
    728. 

  728. SiS_GetModeID_TV(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay, int Depth,
    729. 

  729. 			unsigned int VBFlags2)
    730. 

  730. {
    731. 

  731.    unsigned short ModeIndex = 0;
    732. 

  732. 

  733.    if(VBFlags2 & VB2_CHRONTEL) {
    734. 

  734. 

  735.       switch(HDisplay)
    736. 

  736.       {
    737. 

  737. 	case 512:
    738. 

  738. 	     if(VGAEngine == SIS_315_VGA) {
    739. 

  739. 		if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
    740. 

  740. 	     }
    741. 

  741. 	     break;
    742. 

  742. 	case 640:
    743. 

  743. 	     if(VDisplay == 480)      ModeIndex = ModeIndex_640x480[Depth];
    744. 

  744. 	     else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
    745. 

  745. 	     break;
    746. 

  746. 	case 800:
    747. 

  747. 	     if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
    748. 

  748. 	     break;
    749. 

  749. 	case 1024:
    750. 

  750. 	     if(VGAEngine == SIS_315_VGA) {
    751. 

  751. 		if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
    752. 

  752. 	     }
    753. 

  753. 	     break;
    754. 

  754.       }
    755. 

  755. 

  756.    } else if(VBFlags2 & VB2_SISTVBRIDGE) {
    757. 

  757. 

  758.       switch(HDisplay)
    759. 

  759.       {
    760. 

  760. 	case 320:
    761. 

  761. 	     if(VDisplay == 200)      ModeIndex = ModeIndex_320x200[Depth];
    762. 

  762. 	     else if(VDisplay == 240) ModeIndex = ModeIndex_320x240[Depth];
    763. 

  763. 	     break;
    764. 

  764. 	case 400:
    765. 

  765. 	     if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
    766. 

  766. 	     break;
    767. 

  767. 	case 512:
    768. 

  768. 	     if( ((VBFlags & TV_YPBPR) && (VBFlags & (TV_YPBPR750P | TV_YPBPR1080I))) ||
    769. 

  769. 		 (VBFlags & TV_HIVISION) 					      ||
    770. 

  770. 		 ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) ) {
    771. 

  771. 		if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
    772. 

  772. 	     }
    773. 

  773. 	     break;
    774. 

  774. 	case 640:
    775. 

  775. 	     if(VDisplay == 480)      ModeIndex = ModeIndex_640x480[Depth];
    776. 

  776. 	     else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
    777. 

  777. 	     break;
    778. 

  778. 	case 720:
    779. 

  779. 	     if((!(VBFlags & TV_HIVISION)) && (!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)))) {
    780. 

  780. 		if(VDisplay == 480) {
    781. 

  781. 		   ModeIndex = ModeIndex_720x480[Depth];
    782. 

  782. 		} else if(VDisplay == 576) {
    783. 

  783. 		   if( ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P)) ||
    784. 

  784. 		       ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) )
    785. 

  785. 		      ModeIndex = ModeIndex_720x576[Depth];
    786. 

  786. 		}
    787. 

  787. 	     }
    788. 

  788.              break;
    789. 

  789. 	case 768:
    790. 

  790. 	     if((!(VBFlags & TV_HIVISION)) && (!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)))) {
    791. 

  791. 		if( ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P)) ||
    792. 

  792. 		    ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) ) {
    793. 

  793. 		   if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
    794. 

  794. 		}
    795. 

  795.              }
    796. 

  796. 	     break;
    797. 

  797. 	case 800:
    798. 

  798. 	     if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
    799. 

  799. 	     else if(VDisplay == 480) {
    800. 

  800. 		if(!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P))) {
    801. 

  801. 		   ModeIndex = ModeIndex_800x480[Depth];
    802. 

  802. 		}
    803. 

  803. 	     }
    804. 

  804. 	     break;
    805. 

  805. 	case 960:
    806. 

  806. 	     if(VGAEngine == SIS_315_VGA) {
    807. 

  807. 		if(VDisplay == 600) {
    808. 

  808. 		   if((VBFlags & TV_HIVISION) || ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I))) {
    809. 

  809. 		      ModeIndex = ModeIndex_960x600[Depth];
    810. 

  810. 		   }
    811. 

  811. 		}
    812. 

  812. 	     }
    813. 

  813. 	     break;
    814. 

  814. 	case 1024:
    815. 

  815. 	     if(VDisplay == 768) {
    816. 

  816. 		if(VBFlags2 & VB2_30xBLV) {
    817. 

  817. 		   ModeIndex = ModeIndex_1024x768[Depth];
    818. 

  818. 		}
    819. 

  819. 	     } else if(VDisplay == 576) {
    820. 

  820. 		if( (VBFlags & TV_HIVISION) ||
    821. 

  821. 		    ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)) ||
    822. 

  822. 		    ((VBFlags2 & VB2_30xBLV) &&
    823. 

  823. 		     ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL))) ) {
    824. 

  824. 		   ModeIndex = ModeIndex_1024x576[Depth];
    825. 

  825. 		}
    826. 

  826. 	     }
    827. 

  827. 	     break;
    828. 

  828. 	case 1280:
    829. 

  829. 	     if(VDisplay == 720) {
    830. 

  830. 		if((VBFlags & TV_HIVISION) ||
    831. 

  831. 		   ((VBFlags & TV_YPBPR) && (VBFlags & (TV_YPBPR1080I | TV_YPBPR750P)))) {
    832. 

  832. 		   ModeIndex = ModeIndex_1280x720[Depth];
    833. 

  833. 		}
    834. 

  834. 	     } else if(VDisplay == 1024) {
    835. 

  835. 		if((VBFlags & TV_HIVISION) ||
    836. 

  836. 		   ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I))) {
    837. 

  837. 		   ModeIndex = ModeIndex_1280x1024[Depth];
    838. 

  838. 		}
    839. 

  839. 	     }
    840. 

  840. 	     break;
    841. 

  841.       }
    842. 

  842.    }
    843. 

  843.    return ModeIndex;
    844. 

  844. }
    845. 

  845. 

  846. unsigned short
    847. 

  847. SiS_GetModeID_VGA2(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay, int Depth,
    848. 

  848. 			unsigned int VBFlags2)
    849. 

  849. {
    850. 

  850.    if(!(VBFlags2 & VB2_SISVGA2BRIDGE)) return 0;
    851. 

  851. 

  852.    if(HDisplay >= 1920) return 0;
    853. 

  853. 

  854.    switch(HDisplay)
    855. 

  855.    {
    856. 

  856. 	case 1600:
    857. 

  857. 		if(VDisplay == 1200) {
    858. 

  858. 			if(VGAEngine != SIS_315_VGA) return 0;
    859. 

  859. 			if(!(VBFlags2 & VB2_30xB)) return 0;
    860. 

  860. 		}
    861. 

  861. 		break;
    862. 

  862. 	case 1680:
    863. 

  863. 		if(VDisplay == 1050) {
    864. 

  864. 			if(VGAEngine != SIS_315_VGA) return 0;
    865. 

  865. 			if(!(VBFlags2 & VB2_30xB)) return 0;
    866. 

  866. 		}
    867. 

  867. 		break;
    868. 

  868.    }
    869. 

  869. 

  870.    return SiS_GetModeID(VGAEngine, 0, HDisplay, VDisplay, Depth, false, 0, 0);
    871. 

  871. }
    872. 

  872. 

  873. 

  874. /*********************************************/
    875. 

  875. /*          HELPER: SetReg, GetReg           */
    876. 

  876. /*********************************************/
    877. 

  877. 

  878. void
    879. 

  879. SiS_SetReg(SISIOADDRESS port, u8 index, u8 data)
    880. 

  880. {
    881. 

  881. 	outb(index, port);
    882. 

  882. 	outb(data, port + 1);
    883. 

  883. }
    884. 

  884. 

  885. void
    886. 

  886. SiS_SetRegByte(SISIOADDRESS port, u8 data)
    887. 

  887. {
    888. 

  888. 	outb(data, port);
    889. 

  889. }
    890. 

  890. 

  891. void
    892. 

  892. SiS_SetRegShort(SISIOADDRESS port, u16 data)
    893. 

  893. {
    894. 

  894. 	outw(data, port);
    895. 

  895. }
    896. 

  896. 

  897. void
    898. 

  898. SiS_SetRegLong(SISIOADDRESS port, u32 data)
    899. 

  899. {
    900. 

  900. 	outl(data, port);
    901. 

  901. }
    902. 

  902. 

  903. u8
    904. 

  904. SiS_GetReg(SISIOADDRESS port, u8 index)
    905. 

  905. {
    906. 

  906. 	outb(index, port);
    907. 

  907. 	return inb(port + 1);
    908. 

  908. }
    909. 

  909. 

  910. u8
    911. 

  911. SiS_GetRegByte(SISIOADDRESS port)
    912. 

  912. {
    913. 

  913. 	return inb(port);
    914. 

  914. }
    915. 

  915. 

  916. u16
    917. 

  917. SiS_GetRegShort(SISIOADDRESS port)
    918. 

  918. {
    919. 

  919. 	return inw(port);
    920. 

  920. }
    921. 

  921. 

  922. u32
    923. 

  923. SiS_GetRegLong(SISIOADDRESS port)
    924. 

  924. {
    925. 

  925. 	return inl(port);
    926. 

  926. }
    927. 

  927. 

  928. void
    929. 

  929. SiS_SetRegANDOR(SISIOADDRESS Port, u8 Index, u8 DataAND, u8 DataOR)
    930. 

  930. {
    931. 

  931.    u8 temp;
    932. 

  932. 

  933.    temp = SiS_GetReg(Port, Index);
    934. 

  934.    temp = (temp & (DataAND)) | DataOR;
    935. 

  935.    SiS_SetReg(Port, Index, temp);
    936. 

  936. }
    937. 

  937. 

  938. void
    939. 

  939. SiS_SetRegAND(SISIOADDRESS Port, u8 Index, u8 DataAND)
    940. 

  940. {
    941. 

  941.    u8 temp;
    942. 

  942. 

  943.    temp = SiS_GetReg(Port, Index);
    944. 

  944.    temp &= DataAND;
    945. 

  945.    SiS_SetReg(Port, Index, temp);
    946. 

  946. }
    947. 

  947. 

  948. void
    949. 

  949. SiS_SetRegOR(SISIOADDRESS Port, u8 Index, u8 DataOR)
    950. 

  950. {
    951. 

  951.    u8 temp;
    952. 

  952. 

  953.    temp = SiS_GetReg(Port, Index);
    954. 

  954.    temp |= DataOR;
    955. 

  955.    SiS_SetReg(Port, Index, temp);
    956. 

  956. }
    957. 

  957. 

  958. /*********************************************/
    959. 

  959. /*      HELPER: DisplayOn, DisplayOff        */
    960. 

  960. /*********************************************/
    961. 

  961. 

  962. void
    963. 

  963. SiS_DisplayOn(struct SiS_Private *SiS_Pr)
    964. 

  964. {
    965. 

  965.    SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x01,0xDF);
    966. 

  966. }
    967. 

  967. 

  968. void
    969. 

  969. SiS_DisplayOff(struct SiS_Private *SiS_Pr)
    970. 

  970. {
    971. 

  971.    SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x01,0x20);
    972. 

  972. }
    973. 

  973. 

  974. 

  975. /*********************************************/
    976. 

  976. /*        HELPER: Init Port Addresses        */
    977. 

  977. /*********************************************/
    978. 

  978. 

  979. void
    980. 

  980. SiSRegInit(struct SiS_Private *SiS_Pr, SISIOADDRESS BaseAddr)
    981. 

  981. {
    982. 

  982.    SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
    983. 

  983.    SiS_Pr->SiS_P3d4 = BaseAddr + 0x24;
    984. 

  984.    SiS_Pr->SiS_P3c0 = BaseAddr + 0x10;
    985. 

  985.    SiS_Pr->SiS_P3ce = BaseAddr + 0x1e;
    986. 

  986.    SiS_Pr->SiS_P3c2 = BaseAddr + 0x12;
    987. 

  987.    SiS_Pr->SiS_P3ca = BaseAddr + 0x1a;
    988. 

  988.    SiS_Pr->SiS_P3c6 = BaseAddr + 0x16;
    989. 

  989.    SiS_Pr->SiS_P3c7 = BaseAddr + 0x17;
    990. 

  990.    SiS_Pr->SiS_P3c8 = BaseAddr + 0x18;
    991. 

  991.    SiS_Pr->SiS_P3c9 = BaseAddr + 0x19;
    992. 

  992.    SiS_Pr->SiS_P3cb = BaseAddr + 0x1b;
    993. 

  993.    SiS_Pr->SiS_P3cc = BaseAddr + 0x1c;
    994. 

  994.    SiS_Pr->SiS_P3cd = BaseAddr + 0x1d;
    995. 

  995.    SiS_Pr->SiS_P3da = BaseAddr + 0x2a;
    996. 

  996.    SiS_Pr->SiS_Part1Port = BaseAddr + SIS_CRT2_PORT_04;
    997. 

  997.    SiS_Pr->SiS_Part2Port = BaseAddr + SIS_CRT2_PORT_10;
    998. 

  998.    SiS_Pr->SiS_Part3Port = BaseAddr + SIS_CRT2_PORT_12;
    999. 

  999.    SiS_Pr->SiS_Part4Port = BaseAddr + SIS_CRT2_PORT_14;
    1000. 

  1000.    SiS_Pr->SiS_Part5Port = BaseAddr + SIS_CRT2_PORT_14 + 2;
    1001. 

  1001.    SiS_Pr->SiS_DDC_Port  = BaseAddr + 0x14;
    1002. 

  1002.    SiS_Pr->SiS_VidCapt   = BaseAddr + SIS_VIDEO_CAPTURE;
    1003. 

  1003.    SiS_Pr->SiS_VidPlay   = BaseAddr + SIS_VIDEO_PLAYBACK;
    1004. 

  1004. }
    1005. 

  1005. 

  1006. /*********************************************/
    1007. 

  1007. /*             HELPER: GetSysFlags           */
    1008. 

  1008. /*********************************************/
    1009. 

  1009. 

  1010. static void
    1011. 

  1011. SiS_GetSysFlags(struct SiS_Private *SiS_Pr)
    1012. 

  1012. {
    1013. 

  1013.    unsigned char cr5f, temp1, temp2;
    1014. 

  1014. 

  1015.    /* 661 and newer: NEVER write non-zero to SR11[7:4] */
    1016. 

  1016.    /* (SR11 is used for DDC and in enable/disablebridge) */
    1017. 

  1017.    SiS_Pr->SiS_SensibleSR11 = false;
    1018. 

  1018.    SiS_Pr->SiS_MyCR63 = 0x63;
    1019. 

  1019.    if(SiS_Pr->ChipType >= SIS_330) {
    1020. 

  1020.       SiS_Pr->SiS_MyCR63 = 0x53;
    1021. 

  1021.       if(SiS_Pr->ChipType >= SIS_661) {
    1022. 

  1022.          SiS_Pr->SiS_SensibleSR11 = true;
    1023. 

  1023.       }
    1024. 

  1024.    }
    1025. 

  1025. 

  1026.    /* You should use the macros, not these flags directly */
    1027. 

  1027. 

  1028.    SiS_Pr->SiS_SysFlags = 0;
    1029. 

  1029.    if(SiS_Pr->ChipType == SIS_650) {
    1030. 

  1030.       cr5f = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0xf0;
    1031. 

  1031.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x5c,0x07);
    1032. 

  1032.       temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
    1033. 

  1033.       SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x5c,0xf8);
    1034. 

  1034.       temp2 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
    1035. 

  1035.       if((!temp1) || (temp2)) {
    1036. 

  1036. 	 switch(cr5f) {
    1037. 

  1037. 	    case 0x80:
    1038. 

  1038. 	    case 0x90:
    1039. 

  1039. 	    case 0xc0:
    1040. 

  1040. 	       SiS_Pr->SiS_SysFlags |= SF_IsM650;
    1041. 

  1041. 	       break;
    1042. 

  1042. 	    case 0xa0:
    1043. 

  1043. 	    case 0xb0:
    1044. 

  1044. 	    case 0xe0:
    1045. 

  1045. 	       SiS_Pr->SiS_SysFlags |= SF_Is651;
    1046. 

  1046. 	       break;
    1047. 

  1047. 	 }
    1048. 

  1048.       } else {
    1049. 

  1049. 	 switch(cr5f) {
    1050. 

  1050. 	    case 0x90:
    1051. 

  1051. 	       temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
    1052. 

  1052. 	       switch(temp1) {
    1053. 

  1053. 		  case 0x00: SiS_Pr->SiS_SysFlags |= SF_IsM652; break;
    1054. 

  1054. 		  case 0x40: SiS_Pr->SiS_SysFlags |= SF_IsM653; break;
    1055. 

  1055. 		  default:   SiS_Pr->SiS_SysFlags |= SF_IsM650; break;
    1056. 

  1056. 	       }
    1057. 

  1057. 	       break;
    1058. 

  1058. 	    case 0xb0:
    1059. 

  1059. 	       SiS_Pr->SiS_SysFlags |= SF_Is652;
    1060. 

  1060. 	       break;
    1061. 

  1061. 	    default:
    1062. 

  1062. 	       SiS_Pr->SiS_SysFlags |= SF_IsM650;
    1063. 

  1063. 	       break;
    1064. 

  1064. 	 }
    1065. 

  1065.       }
    1066. 

  1066.    }
    1067. 

  1067. 

  1068.    if(SiS_Pr->ChipType >= SIS_760 && SiS_Pr->ChipType <= SIS_761) {
    1069. 

  1069.       if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0x30) {
    1070. 

  1070.          SiS_Pr->SiS_SysFlags |= SF_760LFB;
    1071. 

  1071.       }
    1072. 

  1072.       if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x79) & 0xf0) {
    1073. 

  1073.          SiS_Pr->SiS_SysFlags |= SF_760UMA;
    1074. 

  1074.       }
    1075. 

  1075.    }
    1076. 

  1076. }
    1077. 

  1077. 

  1078. /*********************************************/
    1079. 

  1079. /*         HELPER: Init PCI & Engines        */
    1080. 

  1080. /*********************************************/
    1081. 

  1081. 

  1082. static void
    1083. 

  1083. SiSInitPCIetc(struct SiS_Private *SiS_Pr)
    1084. 

  1084. {
    1085. 

  1085.    switch(SiS_Pr->ChipType) {
    1086. 

  1086. #ifdef CONFIG_FB_SIS_300
    1087. 

  1087.    case SIS_300:
    1088. 

  1088.    case SIS_540:
    1089. 

  1089.    case SIS_630:
    1090. 

  1090.    case SIS_730:
    1091. 

  1091.       /* Set - PCI LINEAR ADDRESSING ENABLE (0x80)
    1092. 

  1092.        *     - RELOCATED VGA IO ENABLED (0x20)
    1093. 

  1093.        *     - MMIO ENABLED (0x01)
    1094. 

  1094.        * Leave other bits untouched.
    1095. 

  1095.        */
    1096. 

  1096.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
    1097. 

  1097.       /*  - Enable 2D (0x40)
    1098. 

  1098.        *  - Enable 3D (0x02)
    1099. 

  1099.        *  - Enable 3D Vertex command fetch (0x10) ?
    1100. 

  1100.        *  - Enable 3D command parser (0x08) ?
    1101. 

  1101.        */
    1102. 

  1102.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x1E,0x5A);
    1103. 

  1103.       break;
    1104. 

  1104. #endif
    1105. 

  1105. #ifdef CONFIG_FB_SIS_315
    1106. 

  1106.    case SIS_315H:
    1107. 

  1107.    case SIS_315:
    1108. 

  1108.    case SIS_315PRO:
    1109. 

  1109.    case SIS_650:
    1110. 

  1110.    case SIS_740:
    1111. 

  1111.    case SIS_330:
    1112. 

  1112.    case SIS_661:
    1113. 

  1113.    case SIS_741:
    1114. 

  1114.    case SIS_660:
    1115. 

  1115.    case SIS_760:
    1116. 

  1116.    case SIS_761:
    1117. 

  1117.    case SIS_340:
    1118. 

  1118.    case XGI_40:
    1119. 

  1119.       /* See above */
    1120. 

  1120.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
    1121. 

  1121.       /*  - Enable 3D G/L transformation engine (0x80)
    1122. 

  1122.        *  - Enable 2D (0x40)
    1123. 

  1123.        *  - Enable 3D vertex command fetch (0x10)
    1124. 

  1124.        *  - Enable 3D command parser (0x08)
    1125. 

  1125.        *  - Enable 3D (0x02)
    1126. 

  1126.        */
    1127. 

  1127.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x1E,0xDA);
    1128. 

  1128.       break;
    1129. 

  1129.    case XGI_20:
    1130. 

  1130.    case SIS_550:
    1131. 

  1131.       /* See above */
    1132. 

  1132.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
    1133. 

  1133.       /* No 3D engine ! */
    1134. 

  1134.       /*  - Enable 2D (0x40)
    1135. 

  1135.        *  - disable 3D
    1136. 

  1136.        */
    1137. 

  1137.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x1E,0x60,0x40);
    1138. 

  1138.       break;
    1139. 

  1139. #endif
    1140. 

  1140.    default:
    1141. 

  1141.       break;
    1142. 

  1142.    }
    1143. 

  1143. }
    1144. 

  1144. 

  1145. /*********************************************/
    1146. 

  1146. /*             HELPER: SetLVDSetc            */
    1147. 

  1147. /*********************************************/
    1148. 

  1148. 

  1149. static
    1150. 

  1150. void
    1151. 

  1151. SiSSetLVDSetc(struct SiS_Private *SiS_Pr)
    1152. 

  1152. {
    1153. 

  1153.    unsigned short temp;
    1154. 

  1154. 

  1155.    SiS_Pr->SiS_IF_DEF_LVDS = 0;
    1156. 

  1156.    SiS_Pr->SiS_IF_DEF_TRUMPION = 0;
    1157. 

  1157.    SiS_Pr->SiS_IF_DEF_CH70xx = 0;
    1158. 

  1158.    SiS_Pr->SiS_IF_DEF_CONEX = 0;
    1159. 

  1159. 

  1160.    SiS_Pr->SiS_ChrontelInit = 0;
    1161. 

  1161. 

  1162.    if(SiS_Pr->ChipType == XGI_20) return;
    1163. 

  1163. 

  1164.    /* Check for SiS30x first */
    1165. 

  1165.    temp = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x00);
    1166. 

  1166.    if((temp == 1) || (temp == 2)) return;
    1167. 

  1167. 

  1168.    switch(SiS_Pr->ChipType) {
    1169. 

  1169. #ifdef CONFIG_FB_SIS_300
    1170. 

  1170.    case SIS_540:
    1171. 

  1171.    case SIS_630:
    1172. 

  1172.    case SIS_730:
    1173. 

  1173. 	temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x37) & 0x0e) >> 1;
    1174. 

  1174. 	if((temp >= 2) && (temp <= 5))	SiS_Pr->SiS_IF_DEF_LVDS = 1;
    1175. 

  1175. 	if(temp == 3)			SiS_Pr->SiS_IF_DEF_TRUMPION = 1;
    1176. 

  1176. 	if((temp == 4) || (temp == 5)) {
    1177. 

  1177. 		/* Save power status (and error check) - UNUSED */
    1178. 

  1178. 		SiS_Pr->SiS_Backup70xx = SiS_GetCH700x(SiS_Pr, 0x0e);
    1179. 

  1179. 		SiS_Pr->SiS_IF_DEF_CH70xx = 1;
    1180. 

  1180. 	}
    1181. 

  1181. 	break;
    1182. 

  1182. #endif
    1183. 

  1183. #ifdef CONFIG_FB_SIS_315
    1184. 

  1184.    case SIS_550:
    1185. 

  1185.    case SIS_650:
    1186. 

  1186.    case SIS_740:
    1187. 

  1187.    case SIS_330:
    1188. 

  1188. 	temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x37) & 0x0e) >> 1;
    1189. 

  1189. 	if((temp >= 2) && (temp <= 3))	SiS_Pr->SiS_IF_DEF_LVDS = 1;
    1190. 

  1190. 	if(temp == 3)			SiS_Pr->SiS_IF_DEF_CH70xx = 2;
    1191. 

  1191. 	break;
    1192. 

  1192.    case SIS_661:
    1193. 

  1193.    case SIS_741:
    1194. 

  1194.    case SIS_660:
    1195. 

  1195.    case SIS_760:
    1196. 

  1196.    case SIS_761:
    1197. 

  1197.    case SIS_340:
    1198. 

  1198.    case XGI_20:
    1199. 

  1199.    case XGI_40:
    1200. 

  1200. 	temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & 0xe0) >> 5;
    1201. 

  1201. 	if((temp >= 2) && (temp <= 3)) 	SiS_Pr->SiS_IF_DEF_LVDS = 1;
    1202. 

  1202. 	if(temp == 3)			SiS_Pr->SiS_IF_DEF_CH70xx = 2;
    1203. 

  1203. 	if(temp == 4)			SiS_Pr->SiS_IF_DEF_CONEX = 1;  /* Not yet supported */
    1204. 

  1204. 	break;
    1205. 

  1205. #endif
    1206. 

  1206.    default:
    1207. 

  1207. 	break;
    1208. 

  1208.    }
    1209. 

  1209. }
    1210. 

  1210. 

  1211. /*********************************************/
    1212. 

  1212. /*          HELPER: Enable DSTN/FSTN         */
    1213. 

  1213. /*********************************************/
    1214. 

  1214. 

  1215. void
    1216. 

  1216. SiS_SetEnableDstn(struct SiS_Private *SiS_Pr, int enable)
    1217. 

  1217. {
    1218. 

  1218.    SiS_Pr->SiS_IF_DEF_DSTN = enable ? 1 : 0;
    1219. 

  1219. }
    1220. 

  1220. 

  1221. void
    1222. 

  1222. SiS_SetEnableFstn(struct SiS_Private *SiS_Pr, int enable)
    1223. 

  1223. {
    1224. 

  1224.    SiS_Pr->SiS_IF_DEF_FSTN = enable ? 1 : 0;
    1225. 

  1225. }
    1226. 

  1226. 

  1227. /*********************************************/
    1228. 

  1228. /*            HELPER: Get modeflag           */
    1229. 

  1229. /*********************************************/
    1230. 

  1230. 

  1231. unsigned short
    1232. 

  1232. SiS_GetModeFlag(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    1233. 

  1233. 		unsigned short ModeIdIndex)
    1234. 

  1234. {
    1235. 

  1235.    if(SiS_Pr->UseCustomMode) {
    1236. 

  1236.       return SiS_Pr->CModeFlag;
    1237. 

  1237.    } else if(ModeNo <= 0x13) {
    1238. 

  1238.       return SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
    1239. 

  1239.    } else {
    1240. 

  1240.       return SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
    1241. 

  1241.    }
    1242. 

  1242. }
    1243. 

  1243. 

  1244. /*********************************************/
    1245. 

  1245. /*        HELPER: Determine ROM usage        */
    1246. 

  1246. /*********************************************/
    1247. 

  1247. 

  1248. bool
    1249. 

  1249. SiSDetermineROMLayout661(struct SiS_Private *SiS_Pr)
    1250. 

  1250. {
    1251. 

  1251.    unsigned char  *ROMAddr  = SiS_Pr->VirtualRomBase;
    1252. 

  1252.    unsigned short romversoffs, romvmaj = 1, romvmin = 0;
    1253. 

  1253. 

  1254.    if(SiS_Pr->ChipType >= XGI_20) {
    1255. 

  1255.       /* XGI ROMs don't qualify */
    1256. 

  1256.       return false;
    1257. 

  1257.    } else if(SiS_Pr->ChipType >= SIS_761) {
    1258. 

  1258.       /* I very much assume 761, 340 and newer will use new layout */
    1259. 

  1259.       return true;
    1260. 

  1260.    } else if(SiS_Pr->ChipType >= SIS_661) {
    1261. 

  1261.       if((ROMAddr[0x1a] == 'N') &&
    1262. 

  1262. 	 (ROMAddr[0x1b] == 'e') &&
    1263. 

  1263. 	 (ROMAddr[0x1c] == 'w') &&
    1264. 

  1264. 	 (ROMAddr[0x1d] == 'V')) {
    1265. 

  1265. 	 return true;
    1266. 

  1266.       }
    1267. 

  1267.       romversoffs = ROMAddr[0x16] | (ROMAddr[0x17] << 8);
    1268. 

  1268.       if(romversoffs) {
    1269. 

  1269. 	 if((ROMAddr[romversoffs+1] == '.') || (ROMAddr[romversoffs+4] == '.')) {
    1270. 

  1270. 	    romvmaj = ROMAddr[romversoffs] - '0';
    1271. 

  1271. 	    romvmin = ((ROMAddr[romversoffs+2] -'0') * 10) + (ROMAddr[romversoffs+3] - '0');
    1272. 

  1272. 	 }
    1273. 

  1273.       }
    1274. 

  1274.       if((romvmaj != 0) || (romvmin >= 92)) {
    1275. 

  1275. 	 return true;
    1276. 

  1276.       }
    1277. 

  1277.    } else if(IS_SIS650740) {
    1278. 

  1278.       if((ROMAddr[0x1a] == 'N') &&
    1279. 

  1279. 	 (ROMAddr[0x1b] == 'e') &&
    1280. 

  1280. 	 (ROMAddr[0x1c] == 'w') &&
    1281. 

  1281. 	 (ROMAddr[0x1d] == 'V')) {
    1282. 

  1282. 	 return true;
    1283. 

  1283.       }
    1284. 

  1284.    }
    1285. 

  1285.    return false;
    1286. 

  1286. }
    1287. 

  1287. 

  1288. static void
    1289. 

  1289. SiSDetermineROMUsage(struct SiS_Private *SiS_Pr)
    1290. 

  1290. {
    1291. 

  1291.    unsigned char  *ROMAddr  = SiS_Pr->VirtualRomBase;
    1292. 

  1292.    unsigned short romptr = 0;
    1293. 

  1293. 

  1294.    SiS_Pr->SiS_UseROM = false;
    1295. 

  1295.    SiS_Pr->SiS_ROMNew = false;
    1296. 

  1296.    SiS_Pr->SiS_PWDOffset = 0;
    1297. 

  1297. 

  1298.    if(SiS_Pr->ChipType >= XGI_20) return;
    1299. 

  1299. 

  1300.    if((ROMAddr) && (SiS_Pr->UseROM)) {
    1301. 

  1301.       if(SiS_Pr->ChipType == SIS_300) {
    1302. 

  1302. 	 /* 300: We check if the code starts below 0x220 by
    1303. 

  1303. 	  * checking the jmp instruction at the beginning
    1304. 

  1304. 	  * of the BIOS image.
    1305. 

  1305. 	  */
    1306. 

  1306. 	 if((ROMAddr[3] == 0xe9) && ((ROMAddr[5] << 8) | ROMAddr[4]) > 0x21a)
    1307. 

  1307. 	    SiS_Pr->SiS_UseROM = true;
    1308. 

  1308.       } else if(SiS_Pr->ChipType < SIS_315H) {
    1309. 

  1309. 	 /* Sony's VAIO BIOS 1.09 follows the standard, so perhaps
    1310. 

  1310. 	  * the others do as well
    1311. 

  1311. 	  */
    1312. 

  1312. 	 SiS_Pr->SiS_UseROM = true;
    1313. 

  1313.       } else {
    1314. 

  1314. 	 /* 315/330 series stick to the standard(s) */
    1315. 

  1315. 	 SiS_Pr->SiS_UseROM = true;
    1316. 

  1316. 	 if((SiS_Pr->SiS_ROMNew = SiSDetermineROMLayout661(SiS_Pr))) {
    1317. 

  1317. 	    SiS_Pr->SiS_EMIOffset = 14;
    1318. 

  1318. 	    SiS_Pr->SiS_PWDOffset = 17;
    1319. 

  1319. 	    SiS_Pr->SiS661LCD2TableSize = 36;
    1320. 

  1320. 	    /* Find out about LCD data table entry size */
    1321. 

  1321. 	    if((romptr = SISGETROMW(0x0102))) {
    1322. 

  1322. 	       if(ROMAddr[romptr + (32 * 16)] == 0xff)
    1323. 

  1323. 		  SiS_Pr->SiS661LCD2TableSize = 32;
    1324. 

  1324. 	       else if(ROMAddr[romptr + (34 * 16)] == 0xff)
    1325. 

  1325. 		  SiS_Pr->SiS661LCD2TableSize = 34;
    1326. 

  1326. 	       else if(ROMAddr[romptr + (36 * 16)] == 0xff)	   /* 0.94, 2.05.00+ */
    1327. 

  1327. 		  SiS_Pr->SiS661LCD2TableSize = 36;
    1328. 

  1328. 	       else if( (ROMAddr[romptr + (38 * 16)] == 0xff) ||   /* 2.00.00 - 2.02.00 */
    1329. 

  1329. 		 	(ROMAddr[0x6F] & 0x01) ) {		   /* 2.03.00 - <2.05.00 */
    1330. 

  1330. 		  SiS_Pr->SiS661LCD2TableSize = 38;		   /* UMC data layout abandoned at 2.05.00 */
    1331. 

  1331. 		  SiS_Pr->SiS_EMIOffset = 16;
    1332. 

  1332. 		  SiS_Pr->SiS_PWDOffset = 19;
    1333. 

  1333. 	       }
    1334. 

  1334. 	    }
    1335. 

  1335. 	 }
    1336. 

  1336.       }
    1337. 

  1337.    }
    1338. 

  1338. }
    1339. 

  1339. 

  1340. /*********************************************/
    1341. 

  1341. /*        HELPER: SET SEGMENT REGISTERS      */
    1342. 

  1342. /*********************************************/
    1343. 

  1343. 

  1344. static void
    1345. 

  1345. SiS_SetSegRegLower(struct SiS_Private *SiS_Pr, unsigned short value)
    1346. 

  1346. {
    1347. 

  1347.    unsigned short temp;
    1348. 

  1348. 

  1349.    value &= 0x00ff;
    1350. 

  1350.    temp = SiS_GetRegByte(SiS_Pr->SiS_P3cb) & 0xf0;
    1351. 

  1351.    temp |= (value >> 4);
    1352. 

  1352.    SiS_SetRegByte(SiS_Pr->SiS_P3cb, temp);
    1353. 

  1353.    temp = SiS_GetRegByte(SiS_Pr->SiS_P3cd) & 0xf0;
    1354. 

  1354.    temp |= (value & 0x0f);
    1355. 

  1355.    SiS_SetRegByte(SiS_Pr->SiS_P3cd, temp);
    1356. 

  1356. }
    1357. 

  1357. 

  1358. static void
    1359. 

  1359. SiS_SetSegRegUpper(struct SiS_Private *SiS_Pr, unsigned short value)
    1360. 

  1360. {
    1361. 

  1361.    unsigned short temp;
    1362. 

  1362. 

  1363.    value &= 0x00ff;
    1364. 

  1364.    temp = SiS_GetRegByte(SiS_Pr->SiS_P3cb) & 0x0f;
    1365. 

  1365.    temp |= (value & 0xf0);
    1366. 

  1366.    SiS_SetRegByte(SiS_Pr->SiS_P3cb, temp);
    1367. 

  1367.    temp = SiS_GetRegByte(SiS_Pr->SiS_P3cd) & 0x0f;
    1368. 

  1368.    temp |= (value << 4);
    1369. 

  1369.    SiS_SetRegByte(SiS_Pr->SiS_P3cd, temp);
    1370. 

  1370. }
    1371. 

  1371. 

  1372. static void
    1373. 

  1373. SiS_SetSegmentReg(struct SiS_Private *SiS_Pr, unsigned short value)
    1374. 

  1374. {
    1375. 

  1375.    SiS_SetSegRegLower(SiS_Pr, value);
    1376. 

  1376.    SiS_SetSegRegUpper(SiS_Pr, value);
    1377. 

  1377. }
    1378. 

  1378. 

  1379. static void
    1380. 

  1380. SiS_ResetSegmentReg(struct SiS_Private *SiS_Pr)
    1381. 

  1381. {
    1382. 

  1382.    SiS_SetSegmentReg(SiS_Pr, 0);
    1383. 

  1383. }
    1384. 

  1384. 

  1385. static void
    1386. 

  1386. SiS_SetSegmentRegOver(struct SiS_Private *SiS_Pr, unsigned short value)
    1387. 

  1387. {
    1388. 

  1388.    unsigned short temp = value >> 8;
    1389. 

  1389. 

  1390.    temp &= 0x07;
    1391. 

  1391.    temp |= (temp << 4);
    1392. 

  1392.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x1d,temp);
    1393. 

  1393.    SiS_SetSegmentReg(SiS_Pr, value);
    1394. 

  1394. }
    1395. 

  1395. 

  1396. static void
    1397. 

  1397. SiS_ResetSegmentRegOver(struct SiS_Private *SiS_Pr)
    1398. 

  1398. {
    1399. 

  1399.    SiS_SetSegmentRegOver(SiS_Pr, 0);
    1400. 

  1400. }
    1401. 

  1401. 

  1402. static void
    1403. 

  1403. SiS_ResetSegmentRegisters(struct SiS_Private *SiS_Pr)
    1404. 

  1404. {
    1405. 

  1405.    if((IS_SIS65x) || (SiS_Pr->ChipType >= SIS_661)) {
    1406. 

  1406.       SiS_ResetSegmentReg(SiS_Pr);
    1407. 

  1407.       SiS_ResetSegmentRegOver(SiS_Pr);
    1408. 

  1408.    }
    1409. 

  1409. }
    1410. 

  1410. 

  1411. /*********************************************/
    1412. 

  1412. /*             HELPER: GetVBType             */
    1413. 

  1413. /*********************************************/
    1414. 

  1414. 

  1415. static
    1416. 

  1416. void
    1417. 

  1417. SiS_GetVBType(struct SiS_Private *SiS_Pr)
    1418. 

  1418. {
    1419. 

  1419.    unsigned short flag = 0, rev = 0, nolcd = 0;
    1420. 

  1420.    unsigned short p4_0f, p4_25, p4_27;
    1421. 

  1421. 

  1422.    SiS_Pr->SiS_VBType = 0;
    1423. 

  1423. 

  1424.    if((SiS_Pr->SiS_IF_DEF_LVDS) || (SiS_Pr->SiS_IF_DEF_CONEX))
    1425. 

  1425.       return;
    1426. 

  1426. 

  1427.    if(SiS_Pr->ChipType == XGI_20)
    1428. 

  1428.       return;
    1429. 

  1429. 

  1430.    flag = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x00);
    1431. 

  1431. 

  1432.    if(flag > 3)
    1433. 

  1433.       return;
    1434. 

  1434. 

  1435.    rev = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x01);
    1436. 

  1436. 

  1437.    if(flag >= 2) {
    1438. 

  1438.       SiS_Pr->SiS_VBType = VB_SIS302B;
    1439. 

  1439.    } else if(flag == 1) {
    1440. 

  1440.       if(rev >= 0xC0) {
    1441. 

  1441. 	 SiS_Pr->SiS_VBType = VB_SIS301C;
    1442. 

  1442.       } else if(rev >= 0xB0) {
    1443. 

  1443. 	 SiS_Pr->SiS_VBType = VB_SIS301B;
    1444. 

  1444. 	 /* Check if 30xB DH version (no LCD support, use Panel Link instead) */
    1445. 

  1445. 	 nolcd = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x23);
    1446. 

  1446. 	 if(!(nolcd & 0x02)) SiS_Pr->SiS_VBType |= VB_NoLCD;
    1447. 

  1447.       } else {
    1448. 

  1448. 	 SiS_Pr->SiS_VBType = VB_SIS301;
    1449. 

  1449.       }
    1450. 

  1450.    }
    1451. 

  1451.    if(SiS_Pr->SiS_VBType & (VB_SIS301B | VB_SIS301C | VB_SIS302B)) {
    1452. 

  1452.       if(rev >= 0xE0) {
    1453. 

  1453. 	 flag = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x39);
    1454. 

  1454. 	 if(flag == 0xff) SiS_Pr->SiS_VBType = VB_SIS302LV;
    1455. 

  1455. 	 else 	 	  SiS_Pr->SiS_VBType = VB_SIS301C;  /* VB_SIS302ELV; */
    1456. 

  1456.       } else if(rev >= 0xD0) {
    1457. 

  1457. 	 SiS_Pr->SiS_VBType = VB_SIS301LV;
    1458. 

  1458.       }
    1459. 

  1459.    }
    1460. 

  1460.    if(SiS_Pr->SiS_VBType & (VB_SIS301C | VB_SIS301LV | VB_SIS302LV | VB_SIS302ELV)) {
    1461. 

  1461.       p4_0f = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x0f);
    1462. 

  1462.       p4_25 = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x25);
    1463. 

  1463.       p4_27 = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x27);
    1464. 

  1464.       SiS_SetRegAND(SiS_Pr->SiS_Part4Port,0x0f,0x7f);
    1465. 

  1465.       SiS_SetRegOR(SiS_Pr->SiS_Part4Port,0x25,0x08);
    1466. 

  1466.       SiS_SetRegAND(SiS_Pr->SiS_Part4Port,0x27,0xfd);
    1467. 

  1467.       if(SiS_GetReg(SiS_Pr->SiS_Part4Port,0x26) & 0x08) {
    1468. 

  1468.          SiS_Pr->SiS_VBType |= VB_UMC;
    1469. 

  1469.       }
    1470. 

  1470.       SiS_SetReg(SiS_Pr->SiS_Part4Port,0x27,p4_27);
    1471. 

  1471.       SiS_SetReg(SiS_Pr->SiS_Part4Port,0x25,p4_25);
    1472. 

  1472.       SiS_SetReg(SiS_Pr->SiS_Part4Port,0x0f,p4_0f);
    1473. 

  1473.    }
    1474. 

  1474. }
    1475. 

  1475. 

  1476. /*********************************************/
    1477. 

  1477. /*           HELPER: Check RAM size          */
    1478. 

  1478. /*********************************************/
    1479. 

  1479. 

  1480. static bool
    1481. 

  1481. SiS_CheckMemorySize(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    1482. 

  1482. 		unsigned short ModeIdIndex)
    1483. 

  1483. {
    1484. 

  1484.    unsigned short AdapterMemSize = SiS_Pr->VideoMemorySize / (1024*1024);
    1485. 

  1485.    unsigned short modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    1486. 

  1486.    unsigned short memorysize = ((modeflag & MemoryInfoFlag) >> MemorySizeShift) + 1;
    1487. 

  1487. 

  1488.    if(!AdapterMemSize) return true;
    1489. 

  1489. 

  1490.    if(AdapterMemSize < memorysize) return false;
    1491. 

  1491.    return true;
    1492. 

  1492. }
    1493. 

  1493. 

  1494. /*********************************************/
    1495. 

  1495. /*           HELPER: Get DRAM type           */
    1496. 

  1496. /*********************************************/
    1497. 

  1497. 

  1498. #ifdef CONFIG_FB_SIS_315
    1499. 

  1499. static unsigned char
    1500. 

  1500. SiS_Get310DRAMType(struct SiS_Private *SiS_Pr)
    1501. 

  1501. {
    1502. 

  1502.    unsigned char data;
    1503. 

  1503. 

  1504.    if((*SiS_Pr->pSiS_SoftSetting) & SoftDRAMType) {
    1505. 

  1505.       data = (*SiS_Pr->pSiS_SoftSetting) & 0x03;
    1506. 

  1506.    } else {
    1507. 

  1507.       if(SiS_Pr->ChipType >= XGI_20) {
    1508. 

  1508.          /* Do I need this? SR17 seems to be zero anyway... */
    1509. 

  1509. 	 data = 0;
    1510. 

  1510.       } else if(SiS_Pr->ChipType >= SIS_340) {
    1511. 

  1511. 	 /* TODO */
    1512. 

  1512. 	 data = 0;
    1513. 

  1513.       } if(SiS_Pr->ChipType >= SIS_661) {
    1514. 

  1514. 	 if(SiS_Pr->SiS_ROMNew) {
    1515. 

  1515. 	    data = ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0xc0) >> 6);
    1516. 

  1516. 	 } else {
    1517. 

  1517. 	    data = SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0x07;
    1518. 

  1518. 	 }
    1519. 

  1519.       } else if(IS_SIS550650740) {
    1520. 

  1520. 	 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x13) & 0x07;
    1521. 

  1521.       } else {	/* 315, 330 */
    1522. 

  1522. 	 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x3a) & 0x03;
    1523. 

  1523. 	 if(SiS_Pr->ChipType == SIS_330) {
    1524. 

  1524. 	    if(data > 1) {
    1525. 

  1525. 	       switch(SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0x30) {
    1526. 

  1526. 	       case 0x00: data = 1; break;
    1527. 

  1527. 	       case 0x10: data = 3; break;
    1528. 

  1528. 	       case 0x20: data = 3; break;
    1529. 

  1529. 	       case 0x30: data = 2; break;
    1530. 

  1530. 	       }
    1531. 

  1531. 	    } else {
    1532. 

  1532. 	       data = 0;
    1533. 

  1533. 	    }
    1534. 

  1534. 	 }
    1535. 

  1535.       }
    1536. 

  1536.    }
    1537. 

  1537. 

  1538.    return data;
    1539. 

  1539. }
    1540. 

  1540. 

  1541. static unsigned short
    1542. 

  1542. SiS_GetMCLK(struct SiS_Private *SiS_Pr)
    1543. 

  1543. {
    1544. 

  1544.    unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
    1545. 

  1545.    unsigned short index;
    1546. 

  1546. 

  1547.    index = SiS_Get310DRAMType(SiS_Pr);
    1548. 

  1548.    if(SiS_Pr->ChipType >= SIS_661) {
    1549. 

  1549.       if(SiS_Pr->SiS_ROMNew) {
    1550. 

  1550. 	 return((unsigned short)(SISGETROMW((0x90 + (index * 5) + 3))));
    1551. 

  1551.       }
    1552. 

  1552.       return(SiS_Pr->SiS_MCLKData_0[index].CLOCK);
    1553. 

  1553.    } else if(index >= 4) {
    1554. 

  1554.       return(SiS_Pr->SiS_MCLKData_1[index - 4].CLOCK);
    1555. 

  1555.    } else {
    1556. 

  1556.       return(SiS_Pr->SiS_MCLKData_0[index].CLOCK);
    1557. 

  1557.    }
    1558. 

  1558. }
    1559. 

  1559. #endif
    1560. 

  1560. 

  1561. /*********************************************/
    1562. 

  1562. /*           HELPER: ClearBuffer             */
    1563. 

  1563. /*********************************************/
    1564. 

  1564. 

  1565. static void
    1566. 

  1566. SiS_ClearBuffer(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
    1567. 

  1567. {
    1568. 

  1568.    unsigned char  SISIOMEMTYPE *memaddr = SiS_Pr->VideoMemoryAddress;
    1569. 

  1569.    unsigned int   memsize = SiS_Pr->VideoMemorySize;
    1570. 

  1570.    unsigned short SISIOMEMTYPE *pBuffer;
    1571. 

  1571.    int i;
    1572. 

  1572. 

  1573.    if(!memaddr || !memsize) return;
    1574. 

  1574. 

  1575.    if(SiS_Pr->SiS_ModeType >= ModeEGA) {
    1576. 

  1576.       if(ModeNo > 0x13) {
    1577. 

  1577. 	 memset_io(memaddr, 0, memsize);
    1578. 

  1578.       } else {
    1579. 

  1579. 	 pBuffer = (unsigned short SISIOMEMTYPE *)memaddr;
    1580. 

  1580. 	 for(i = 0; i < 0x4000; i++) writew(0x0000, &pBuffer[i]);
    1581. 

  1581.       }
    1582. 

  1582.    } else if(SiS_Pr->SiS_ModeType < ModeCGA) {
    1583. 

  1583.       pBuffer = (unsigned short SISIOMEMTYPE *)memaddr;
    1584. 

  1584.       for(i = 0; i < 0x4000; i++) writew(0x0720, &pBuffer[i]);
    1585. 

  1585.    } else {
    1586. 

  1586.       memset_io(memaddr, 0, 0x8000);
    1587. 

  1587.    }
    1588. 

  1588. }
    1589. 

  1589. 

  1590. /*********************************************/
    1591. 

  1591. /*           HELPER: SearchModeID            */
    1592. 

  1592. /*********************************************/
    1593. 

  1593. 

  1594. bool
    1595. 

  1595. SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
    1596. 

  1596. 		unsigned short *ModeIdIndex)
    1597. 

  1597. {
    1598. 

  1598.    unsigned char VGAINFO = SiS_Pr->SiS_VGAINFO;
    1599. 

  1599. 

  1600.    if((*ModeNo) <= 0x13) {
    1601. 

  1601. 

  1602.       if((*ModeNo) <= 0x05) (*ModeNo) |= 0x01;
    1603. 

  1603. 

  1604.       for((*ModeIdIndex) = 0; ;(*ModeIdIndex)++) {
    1605. 

  1605. 	 if(SiS_Pr->SiS_SModeIDTable[(*ModeIdIndex)].St_ModeID == (*ModeNo)) break;
    1606. 

  1606. 	 if(SiS_Pr->SiS_SModeIDTable[(*ModeIdIndex)].St_ModeID == 0xFF) return false;
    1607. 

  1607.       }
    1608. 

  1608. 

  1609.       if((*ModeNo) == 0x07) {
    1610. 

  1610. 	  if(VGAINFO & 0x10) (*ModeIdIndex)++;   /* 400 lines */
    1611. 

  1611. 	  /* else 350 lines */
    1612. 

  1612.       }
    1613. 

  1613.       if((*ModeNo) <= 0x03) {
    1614. 

  1614. 	 if(!(VGAINFO & 0x80)) (*ModeIdIndex)++;
    1615. 

  1615. 	 if(VGAINFO & 0x10)    (*ModeIdIndex)++; /* 400 lines  */
    1616. 

  1616. 	 /* else 350 lines  */
    1617. 

  1617.       }
    1618. 

  1618.       /* else 200 lines  */
    1619. 

  1619. 

  1620.    } else {
    1621. 

  1621. 

  1622.       for((*ModeIdIndex) = 0; ;(*ModeIdIndex)++) {
    1623. 

  1623. 	 if(SiS_Pr->SiS_EModeIDTable[(*ModeIdIndex)].Ext_ModeID == (*ModeNo)) break;
    1624. 

  1624. 	 if(SiS_Pr->SiS_EModeIDTable[(*ModeIdIndex)].Ext_ModeID == 0xFF) return false;
    1625. 

  1625.       }
    1626. 

  1626. 

  1627.    }
    1628. 

  1628.    return true;
    1629. 

  1629. }
    1630. 

  1630. 

  1631. /*********************************************/
    1632. 

  1632. /*            HELPER: GetModePtr             */
    1633. 

  1633. /*********************************************/
    1634. 

  1634. 

  1635. unsigned short
    1636. 

  1636. SiS_GetModePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
    1637. 

  1637. {
    1638. 

  1638.    unsigned short index;
    1639. 

  1639. 

  1640.    if(ModeNo <= 0x13) {
    1641. 

  1641.       index = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_StTableIndex;
    1642. 

  1642.    } else {
    1643. 

  1643.       if(SiS_Pr->SiS_ModeType <= ModeEGA) index = 0x1B;
    1644. 

  1644.       else index = 0x0F;
    1645. 

  1645.    }
    1646. 

  1646.    return index;
    1647. 

  1647. }
    1648. 

  1648. 

  1649. /*********************************************/
    1650. 

  1650. /*         HELPERS: Get some indices         */
    1651. 

  1651. /*********************************************/
    1652. 

  1652. 

  1653. unsigned short
    1654. 

  1654. SiS_GetRefCRTVCLK(struct SiS_Private *SiS_Pr, unsigned short Index, int UseWide)
    1655. 

  1655. {
    1656. 

  1656.    if(SiS_Pr->SiS_RefIndex[Index].Ext_InfoFlag & HaveWideTiming) {
    1657. 

  1657.       if(UseWide == 1) {
    1658. 

  1658.          return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK_WIDE;
    1659. 

  1659.       } else {
    1660. 

  1660.          return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK_NORM;
    1661. 

  1661.       }
    1662. 

  1662.    } else {
    1663. 

  1663.       return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK;
    1664. 

  1664.    }
    1665. 

  1665. }
    1666. 

  1666. 

  1667. unsigned short
    1668. 

  1668. SiS_GetRefCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short Index, int UseWide)
    1669. 

  1669. {
    1670. 

  1670.    if(SiS_Pr->SiS_RefIndex[Index].Ext_InfoFlag & HaveWideTiming) {
    1671. 

  1671.       if(UseWide == 1) {
    1672. 

  1672.          return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC_WIDE;
    1673. 

  1673.       } else {
    1674. 

  1674.          return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC_NORM;
    1675. 

  1675.       }
    1676. 

  1676.    } else {
    1677. 

  1677.       return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC;
    1678. 

  1678.    }
    1679. 

  1679. }
    1680. 

  1680. 

  1681. /*********************************************/
    1682. 

  1682. /*           HELPER: LowModeTests            */
    1683. 

  1683. /*********************************************/
    1684. 

  1684. 

  1685. static bool
    1686. 

  1686. SiS_DoLowModeTest(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
    1687. 

  1687. {
    1688. 

  1688.    unsigned short temp, temp1, temp2;
    1689. 

  1689. 

  1690.    if((ModeNo != 0x03) && (ModeNo != 0x10) && (ModeNo != 0x12))
    1691. 

  1691.       return true;
    1692. 

  1692.    temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x11);
    1693. 

  1693.    SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x11,0x80);
    1694. 

  1694.    temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x00);
    1695. 

  1695.    SiS_SetReg(SiS_Pr->SiS_P3d4,0x00,0x55);
    1696. 

  1696.    temp2 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x00);
    1697. 

  1697.    SiS_SetReg(SiS_Pr->SiS_P3d4,0x00,temp1);
    1698. 

  1698.    SiS_SetReg(SiS_Pr->SiS_P3d4,0x11,temp);
    1699. 

  1699.    if((SiS_Pr->ChipType >= SIS_315H) ||
    1700. 

  1700.       (SiS_Pr->ChipType == SIS_300)) {
    1701. 

  1701.       if(temp2 == 0x55) return false;
    1702. 

  1702.       else return true;
    1703. 

  1703.    } else {
    1704. 

  1704.       if(temp2 != 0x55) return true;
    1705. 

  1705.       else {
    1706. 

  1706. 	 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x35,0x01);
    1707. 

  1707. 	 return false;
    1708. 

  1708.       }
    1709. 

  1709.    }
    1710. 

  1710. }
    1711. 

  1711. 

  1712. static void
    1713. 

  1713. SiS_SetLowModeTest(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
    1714. 

  1714. {
    1715. 

  1715.    if(SiS_DoLowModeTest(SiS_Pr, ModeNo)) {
    1716. 

  1716.       SiS_Pr->SiS_SetFlag |= LowModeTests;
    1717. 

  1717.    }
    1718. 

  1718. }
    1719. 

  1719. 

  1720. /*********************************************/
    1721. 

  1721. /*        HELPER: OPEN/CLOSE CRT1 CRTC       */
    1722. 

  1722. /*********************************************/
    1723. 

  1723. 

  1724. static void
    1725. 

  1725. SiS_OpenCRTC(struct SiS_Private *SiS_Pr)
    1726. 

  1726. {
    1727. 

  1727.    if(IS_SIS650) {
    1728. 

  1728.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x51,0x1f);
    1729. 

  1729.       if(IS_SIS651) SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x51,0x20);
    1730. 

  1730.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x56,0xe7);
    1731. 

  1731.    } else if(IS_SIS661741660760) {
    1732. 

  1732.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x61,0xf7);
    1733. 

  1733.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x51,0x1f);
    1734. 

  1734.       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x56,0xe7);
    1735. 

  1735.       if(!SiS_Pr->SiS_ROMNew) {
    1736. 

  1736. 	 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x3a,0xef);
    1737. 

  1737.       }
    1738. 

  1738.    }
    1739. 

  1739. }
    1740. 

  1740. 

  1741. static void
    1742. 

  1742. SiS_CloseCRTC(struct SiS_Private *SiS_Pr)
    1743. 

  1743. {
    1744. 

  1744. #if 0 /* This locks some CRTC registers. We don't want that. */
    1745. 

  1745.    unsigned short temp1 = 0, temp2 = 0;
    1746. 

  1746. 

  1747.    if(IS_SIS661741660760) {
    1748. 

  1748.       if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
    1749. 

  1749.          temp1 = 0xa0; temp2 = 0x08;
    1750. 

  1750.       }
    1751. 

  1751.       SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x51,0x1f,temp1);
    1752. 

  1752.       SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x56,0xe7,temp2);
    1753. 

  1753.    }
    1754. 

  1754. #endif
    1755. 

  1755. }
    1756. 

  1756. 

  1757. static void
    1758. 

  1758. SiS_HandleCRT1(struct SiS_Private *SiS_Pr)
    1759. 

  1759. {
    1760. 

  1760.    /* Enable CRT1 gating */
    1761. 

  1761.    SiS_SetRegAND(SiS_Pr->SiS_P3d4,SiS_Pr->SiS_MyCR63,0xbf);
    1762. 

  1762. #if 0
    1763. 

  1763.    if(!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x15) & 0x01)) {
    1764. 

  1764.       if((SiS_GetReg(SiS_Pr->SiS_P3c4,0x15) & 0x0a) ||
    1765. 

  1765.          (SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) & 0x01)) {
    1766. 

  1766.          SiS_SetRegOR(SiS_Pr->SiS_P3d4,SiS_Pr->SiS_MyCR63,0x40);
    1767. 

  1767.       }
    1768. 

  1768.    }
    1769. 

  1769. #endif
    1770. 

  1770. }
    1771. 

  1771. 

  1772. /*********************************************/
    1773. 

  1773. /*           HELPER: GetColorDepth           */
    1774. 

  1774. /*********************************************/
    1775. 

  1775. 

  1776. unsigned short
    1777. 

  1777. SiS_GetColorDepth(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    1778. 

  1778. 		unsigned short ModeIdIndex)
    1779. 

  1779. {
    1780. 

  1780.    static const unsigned short ColorDepth[6] = { 1, 2, 4, 4, 6, 8 };
    1781. 

  1781.    unsigned short modeflag;
    1782. 

  1782.    short index;
    1783. 

  1783. 

  1784.    /* Do NOT check UseCustomMode, will skrew up FIFO */
    1785. 

  1785.    if(ModeNo == 0xfe) {
    1786. 

  1786.       modeflag = SiS_Pr->CModeFlag;
    1787. 

  1787.    } else if(ModeNo <= 0x13) {
    1788. 

  1788.       modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
    1789. 

  1789.    } else {
    1790. 

  1790.       modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
    1791. 

  1791.    }
    1792. 

  1792. 

  1793.    index = (modeflag & ModeTypeMask) - ModeEGA;
    1794. 

  1794.    if(index < 0) index = 0;
    1795. 

  1795.    return ColorDepth[index];
    1796. 

  1796. }
    1797. 

  1797. 

  1798. /*********************************************/
    1799. 

  1799. /*             HELPER: GetOffset             */
    1800. 

  1800. /*********************************************/
    1801. 

  1801. 

  1802. unsigned short
    1803. 

  1803. SiS_GetOffset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    1804. 

  1804. 		unsigned short ModeIdIndex, unsigned short RRTI)
    1805. 

  1805. {
    1806. 

  1806.    unsigned short xres, temp, colordepth, infoflag;
    1807. 

  1807. 

  1808.    if(SiS_Pr->UseCustomMode) {
    1809. 

  1809.       infoflag = SiS_Pr->CInfoFlag;
    1810. 

  1810.       xres = SiS_Pr->CHDisplay;
    1811. 

  1811.    } else {
    1812. 

  1812.       infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
    1813. 

  1813.       xres = SiS_Pr->SiS_RefIndex[RRTI].XRes;
    1814. 

  1814.    }
    1815. 

  1815. 

  1816.    colordepth = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex);
    1817. 

  1817. 

  1818.    temp = xres / 16;
    1819. 

  1819.    if(infoflag & InterlaceMode) temp <<= 1;
    1820. 

  1820.    temp *= colordepth;
    1821. 

  1821.    if(xres % 16) temp += (colordepth >> 1);
    1822. 

  1822. 

  1823.    return temp;
    1824. 

  1824. }
    1825. 

  1825. 

  1826. /*********************************************/
    1827. 

  1827. /*                   SEQ                     */
    1828. 

  1828. /*********************************************/
    1829. 

  1829. 

  1830. static void
    1831. 

  1831. SiS_SetSeqRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
    1832. 

  1832. {
    1833. 

  1833.    unsigned char SRdata;
    1834. 

  1834.    int i;
    1835. 

  1835. 

  1836.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x00,0x03);
    1837. 

  1837. 

  1838.    /* or "display off"  */
    1839. 

  1839.    SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[0] | 0x20;
    1840. 

  1840. 

  1841.    /* determine whether to force x8 dotclock */
    1842. 

  1842.    if((SiS_Pr->SiS_VBType & VB_SISVB) || (SiS_Pr->SiS_IF_DEF_LVDS)) {
    1843. 

  1843. 

  1844.       if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToTV)) {
    1845. 

  1845.          if(SiS_Pr->SiS_VBInfo & SetInSlaveMode)    SRdata |= 0x01;
    1846. 

  1846.       } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) SRdata |= 0x01;
    1847. 

  1847. 

  1848.    }
    1849. 

  1849. 

  1850.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x01,SRdata);
    1851. 

  1851. 

  1852.    for(i = 2; i <= 4; i++) {
    1853. 

  1853.       SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[i - 1];
    1854. 

  1854.       SiS_SetReg(SiS_Pr->SiS_P3c4,i,SRdata);
    1855. 

  1855.    }
    1856. 

  1856. }
    1857. 

  1857. 

  1858. /*********************************************/
    1859. 

  1859. /*                  MISC                     */
    1860. 

  1860. /*********************************************/
    1861. 

  1861. 

  1862. static void
    1863. 

  1863. SiS_SetMiscRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
    1864. 

  1864. {
    1865. 

  1865.    unsigned char Miscdata;
    1866. 

  1866. 

  1867.    Miscdata = SiS_Pr->SiS_StandTable[StandTableIndex].MISC;
    1868. 

  1868. 

  1869.    if(SiS_Pr->ChipType < SIS_661) {
    1870. 

  1870.       if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
    1871. 

  1871. 	 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
    1872. 

  1872. 	   Miscdata |= 0x0C;
    1873. 

  1873. 	 }
    1874. 

  1874.       }
    1875. 

  1875.    }
    1876. 

  1876. 

  1877.    SiS_SetRegByte(SiS_Pr->SiS_P3c2,Miscdata);
    1878. 

  1878. }
    1879. 

  1879. 

  1880. /*********************************************/
    1881. 

  1881. /*                  CRTC                     */
    1882. 

  1882. /*********************************************/
    1883. 

  1883. 

  1884. static void
    1885. 

  1885. SiS_SetCRTCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
    1886. 

  1886. {
    1887. 

  1887.    unsigned char  CRTCdata;
    1888. 

  1888.    unsigned short i;
    1889. 

  1889. 

  1890.    /* Unlock CRTC */
    1891. 

  1891.    SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
    1892. 

  1892. 

  1893.    for(i = 0; i <= 0x18; i++) {
    1894. 

  1894.       CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
    1895. 

  1895.       SiS_SetReg(SiS_Pr->SiS_P3d4,i,CRTCdata);
    1896. 

  1896.    }
    1897. 

  1897. 

  1898.    if(SiS_Pr->ChipType >= SIS_661) {
    1899. 

  1899.       SiS_OpenCRTC(SiS_Pr);
    1900. 

  1900.       for(i = 0x13; i <= 0x14; i++) {
    1901. 

  1901. 	 CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
    1902. 

  1902. 	 SiS_SetReg(SiS_Pr->SiS_P3d4,i,CRTCdata);
    1903. 

  1903.       }
    1904. 

  1904.    } else if( ( (SiS_Pr->ChipType == SIS_630) ||
    1905. 

  1905. 	        (SiS_Pr->ChipType == SIS_730) )  &&
    1906. 

  1906. 	      (SiS_Pr->ChipRevision >= 0x30) ) {
    1907. 

  1907.       if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
    1908. 

  1908. 	 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToTV)) {
    1909. 

  1909. 	    SiS_SetReg(SiS_Pr->SiS_P3d4,0x18,0xFE);
    1910. 

  1910. 	 }
    1911. 

  1911.       }
    1912. 

  1912.    }
    1913. 

  1913. }
    1914. 

  1914. 

  1915. /*********************************************/
    1916. 

  1916. /*                   ATT                     */
    1917. 

  1917. /*********************************************/
    1918. 

  1918. 

  1919. static void
    1920. 

  1920. SiS_SetATTRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
    1921. 

  1921. {
    1922. 

  1922.    unsigned char  ARdata;
    1923. 

  1923.    unsigned short i;
    1924. 

  1924. 

  1925.    for(i = 0; i <= 0x13; i++) {
    1926. 

  1926.       ARdata = SiS_Pr->SiS_StandTable[StandTableIndex].ATTR[i];
    1927. 

  1927. 

  1928.       if(i == 0x13) {
    1929. 

  1929. 	 /* Pixel shift. If screen on LCD or TV is shifted left or right,
    1930. 

  1930. 	  * this might be the cause.
    1931. 

  1931. 	  */
    1932. 

  1932. 	 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
    1933. 

  1933. 	    if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) ARdata = 0;
    1934. 

  1934. 	 }
    1935. 

  1935. 	 if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
    1936. 

  1936. 	    if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
    1937. 

  1937. 	       if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
    1938. 

  1938. 		  if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
    1939. 

  1939. 	       }
    1940. 

  1940. 	    }
    1941. 

  1941. 	 }
    1942. 

  1942. 	 if(SiS_Pr->ChipType >= SIS_661) {
    1943. 

  1943. 	    if(SiS_Pr->SiS_VBInfo & (SetCRT2ToTV | SetCRT2ToLCD)) {
    1944. 

  1944. 	       if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
    1945. 

  1945. 	    }
    1946. 

  1946. 	 } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
    1947. 

  1947. 	    if(SiS_Pr->ChipType >= SIS_315H) {
    1948. 

  1948. 	       if(IS_SIS550650740660) {
    1949. 

  1949. 		  /* 315, 330 don't do this */
    1950. 

  1950. 		  if(SiS_Pr->SiS_VBType & VB_SIS30xB) {
    1951. 

  1951. 		     if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
    1952. 

  1952. 		  } else {
    1953. 

  1953. 		     ARdata = 0;
    1954. 

  1954. 		  }
    1955. 

  1955. 	       }
    1956. 

  1956. 	    } else {
    1957. 

  1957. 	       if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
    1958. 

  1958. 	    }
    1959. 

  1959. 	 }
    1960. 

  1960.       }
    1961. 

  1961.       SiS_GetRegByte(SiS_Pr->SiS_P3da);		/* reset 3da  */
    1962. 

  1962.       SiS_SetRegByte(SiS_Pr->SiS_P3c0,i);	/* set index  */
    1963. 

  1963.       SiS_SetRegByte(SiS_Pr->SiS_P3c0,ARdata);	/* set data   */
    1964. 

  1964.    }
    1965. 

  1965. 

  1966.    SiS_GetRegByte(SiS_Pr->SiS_P3da);		/* reset 3da  */
    1967. 

  1967.    SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x14);	/* set index  */
    1968. 

  1968.    SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x00);	/* set data   */
    1969. 

  1969. 

  1970.    SiS_GetRegByte(SiS_Pr->SiS_P3da);
    1971. 

  1971.    SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x20);	/* Enable Attribute  */
    1972. 

  1972.    SiS_GetRegByte(SiS_Pr->SiS_P3da);
    1973. 

  1973. }
    1974. 

  1974. 

  1975. /*********************************************/
    1976. 

  1976. /*                   GRC                     */
    1977. 

  1977. /*********************************************/
    1978. 

  1978. 

  1979. static void
    1980. 

  1980. SiS_SetGRCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
    1981. 

  1981. {
    1982. 

  1982.    unsigned char  GRdata;
    1983. 

  1983.    unsigned short i;
    1984. 

  1984. 

  1985.    for(i = 0; i <= 0x08; i++) {
    1986. 

  1986.       GRdata = SiS_Pr->SiS_StandTable[StandTableIndex].GRC[i];
    1987. 

  1987.       SiS_SetReg(SiS_Pr->SiS_P3ce,i,GRdata);
    1988. 

  1988.    }
    1989. 

  1989. 

  1990.    if(SiS_Pr->SiS_ModeType > ModeVGA) {
    1991. 

  1991.       /* 256 color disable */
    1992. 

  1992.       SiS_SetRegAND(SiS_Pr->SiS_P3ce,0x05,0xBF);
    1993. 

  1993.    }
    1994. 

  1994. }
    1995. 

  1995. 

  1996. /*********************************************/
    1997. 

  1997. /*          CLEAR EXTENDED REGISTERS         */
    1998. 

  1998. /*********************************************/
    1999. 

  1999. 

  2000. static void
    2001. 

  2001. SiS_ClearExt1Regs(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
    2002. 

  2002. {
    2003. 

  2003.    unsigned short i;
    2004. 

  2004. 

  2005.    for(i = 0x0A; i <= 0x0E; i++) {
    2006. 

  2006.       SiS_SetReg(SiS_Pr->SiS_P3c4,i,0x00);
    2007. 

  2007.    }
    2008. 

  2008. 

  2009.    if(SiS_Pr->ChipType >= SIS_315H) {
    2010. 

  2010.       SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x37,0xFE);
    2011. 

  2011.       if(ModeNo <= 0x13) {
    2012. 

  2012. 	 if(ModeNo == 0x06 || ModeNo >= 0x0e) {
    2013. 

  2013. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x0e,0x20);
    2014. 

  2014. 	 }
    2015. 

  2015.       }
    2016. 

  2016.    }
    2017. 

  2017. }
    2018. 

  2018. 

  2019. /*********************************************/
    2020. 

  2020. /*                 RESET VCLK                */
    2021. 

  2021. /*********************************************/
    2022. 

  2022. 

  2023. static void
    2024. 

  2024. SiS_ResetCRT1VCLK(struct SiS_Private *SiS_Pr)
    2025. 

  2025. {
    2026. 

  2026.    if(SiS_Pr->ChipType >= SIS_315H) {
    2027. 

  2027.       if(SiS_Pr->ChipType < SIS_661) {
    2028. 

  2028. 	 if(SiS_Pr->SiS_IF_DEF_LVDS == 0) return;
    2029. 

  2029.       }
    2030. 

  2030.    } else {
    2031. 

  2031.       if((SiS_Pr->SiS_IF_DEF_LVDS == 0) &&
    2032. 

  2032. 	 (!(SiS_Pr->SiS_VBType & VB_SIS30xBLV)) ) {
    2033. 

  2033. 	 return;
    2034. 

  2034.       }
    2035. 

  2035.    }
    2036. 

  2036. 

  2037.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x31,0xcf,0x20);
    2038. 

  2038.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2B,SiS_Pr->SiS_VCLKData[1].SR2B);
    2039. 

  2039.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2C,SiS_Pr->SiS_VCLKData[1].SR2C);
    2040. 

  2040.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
    2041. 

  2041.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x31,0xcf,0x10);
    2042. 

  2042.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2B,SiS_Pr->SiS_VCLKData[0].SR2B);
    2043. 

  2043.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2C,SiS_Pr->SiS_VCLKData[0].SR2C);
    2044. 

  2044.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
    2045. 

  2045. }
    2046. 

  2046. 

  2047. /*********************************************/
    2048. 

  2048. /*                  SYNC                     */
    2049. 

  2049. /*********************************************/
    2050. 

  2050. 

  2051. static void
    2052. 

  2052. SiS_SetCRT1Sync(struct SiS_Private *SiS_Pr, unsigned short RRTI)
    2053. 

  2053. {
    2054. 

  2054.    unsigned short sync;
    2055. 

  2055. 

  2056.    if(SiS_Pr->UseCustomMode) {
    2057. 

  2057.       sync = SiS_Pr->CInfoFlag >> 8;
    2058. 

  2058.    } else {
    2059. 

  2059.       sync = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag >> 8;
    2060. 

  2060.    }
    2061. 

  2061. 

  2062.    sync &= 0xC0;
    2063. 

  2063.    sync |= 0x2f;
    2064. 

  2064.    SiS_SetRegByte(SiS_Pr->SiS_P3c2,sync);
    2065. 

  2065. }
    2066. 

  2066. 

  2067. /*********************************************/
    2068. 

  2068. /*                  CRTC/2                   */
    2069. 

  2069. /*********************************************/
    2070. 

  2070. 

  2071. static void
    2072. 

  2072. SiS_SetCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2073. 

  2073. 		unsigned short ModeIdIndex, unsigned short RRTI)
    2074. 

  2074. {
    2075. 

  2075.    unsigned short temp, i, j, modeflag;
    2076. 

  2076.    unsigned char  *crt1data = NULL;
    2077. 

  2077. 

  2078.    modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    2079. 

  2079. 

  2080.    if(SiS_Pr->UseCustomMode) {
    2081. 

  2081. 

  2082.       crt1data = &SiS_Pr->CCRT1CRTC[0];
    2083. 

  2083. 

  2084.    } else {
    2085. 

  2085. 

  2086.       temp = SiS_GetRefCRT1CRTC(SiS_Pr, RRTI, SiS_Pr->SiS_UseWide);
    2087. 

  2087. 

  2088.       /* Alternate for 1600x1200 LCDA */
    2089. 

  2089.       if((temp == 0x20) && (SiS_Pr->Alternate1600x1200)) temp = 0x57;
    2090. 

  2090. 

  2091.       crt1data = (unsigned char *)&SiS_Pr->SiS_CRT1Table[temp].CR[0];
    2092. 

  2092. 

  2093.    }
    2094. 

  2094. 

  2095.    /* unlock cr0-7 */
    2096. 

  2096.    SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
    2097. 

  2097. 

  2098.    for(i = 0, j = 0; i <= 7; i++, j++) {
    2099. 

  2099.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
    2100. 

  2100.    }
    2101. 

  2101.    for(j = 0x10; i <= 10; i++, j++) {
    2102. 

  2102.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
    2103. 

  2103.    }
    2104. 

  2104.    for(j = 0x15; i <= 12; i++, j++) {
    2105. 

  2105.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
    2106. 

  2106.    }
    2107. 

  2107.    for(j = 0x0A; i <= 15; i++, j++) {
    2108. 

  2108.       SiS_SetReg(SiS_Pr->SiS_P3c4,j,crt1data[i]);
    2109. 

  2109.    }
    2110. 

  2110. 

  2111.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x0E,crt1data[16] & 0xE0);
    2112. 

  2112. 

  2113.    temp = (crt1data[16] & 0x01) << 5;
    2114. 

  2114.    if(modeflag & DoubleScanMode) temp |= 0x80;
    2115. 

  2115.    SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x09,0x5F,temp);
    2116. 

  2116. 

  2117.    if(SiS_Pr->SiS_ModeType > ModeVGA) {
    2118. 

  2118.       SiS_SetReg(SiS_Pr->SiS_P3d4,0x14,0x4F);
    2119. 

  2119.    }
    2120. 

  2120. 

  2121. #ifdef CONFIG_FB_SIS_315
    2122. 

  2122.    if(SiS_Pr->ChipType == XGI_20) {
    2123. 

  2123.       SiS_SetReg(SiS_Pr->SiS_P3d4,0x04,crt1data[4] - 1);
    2124. 

  2124.       if(!(temp = crt1data[5] & 0x1f)) {
    2125. 

  2125.          SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x0c,0xfb);
    2126. 

  2126.       }
    2127. 

  2127.       SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x05,0xe0,((temp - 1) & 0x1f));
    2128. 

  2128.       temp = (crt1data[16] >> 5) + 3;
    2129. 

  2129.       if(temp > 7) temp -= 7;
    2130. 

  2130.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0e,0x1f,(temp << 5));
    2131. 

  2131.    }
    2132. 

  2132. #endif
    2133. 

  2133. }
    2134. 

  2134. 

  2135. /*********************************************/
    2136. 

  2136. /*               OFFSET & PITCH              */
    2137. 

  2137. /*********************************************/
    2138. 

  2138. /*  (partly overruled by SetPitch() in XF86) */
    2139. 

  2139. /*********************************************/
    2140. 

  2140. 

  2141. static void
    2142. 

  2142. SiS_SetCRT1Offset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2143. 

  2143. 		unsigned short ModeIdIndex, unsigned short RRTI)
    2144. 

  2144. {
    2145. 

  2145.    unsigned short temp, DisplayUnit, infoflag;
    2146. 

  2146. 

  2147.    if(SiS_Pr->UseCustomMode) {
    2148. 

  2148.       infoflag = SiS_Pr->CInfoFlag;
    2149. 

  2149.    } else {
    2150. 

  2150.       infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
    2151. 

  2151.    }
    2152. 

  2152. 

  2153.    DisplayUnit = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
    2154. 

  2154. 

  2155.    temp = (DisplayUnit >> 8) & 0x0f;
    2156. 

  2156.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0E,0xF0,temp);
    2157. 

  2157. 

  2158.    SiS_SetReg(SiS_Pr->SiS_P3d4,0x13,DisplayUnit & 0xFF);
    2159. 

  2159. 

  2160.    if(infoflag & InterlaceMode) DisplayUnit >>= 1;
    2161. 

  2161. 

  2162.    DisplayUnit <<= 5;
    2163. 

  2163.    temp = (DisplayUnit >> 8) + 1;
    2164. 

  2164.    if(DisplayUnit & 0xff) temp++;
    2165. 

  2165.    if(SiS_Pr->ChipType == XGI_20) {
    2166. 

  2166.       if(ModeNo == 0x4a || ModeNo == 0x49) temp--;
    2167. 

  2167.    }
    2168. 

  2168.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x10,temp);
    2169. 

  2169. }
    2170. 

  2170. 

  2171. /*********************************************/
    2172. 

  2172. /*                  VCLK                     */
    2173. 

  2173. /*********************************************/
    2174. 

  2174. 

  2175. static void
    2176. 

  2176. SiS_SetCRT1VCLK(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2177. 

  2177. 		unsigned short ModeIdIndex, unsigned short RRTI)
    2178. 

  2178. {
    2179. 

  2179.    unsigned short index = 0, clka, clkb;
    2180. 

  2180. 

  2181.    if(SiS_Pr->UseCustomMode) {
    2182. 

  2182.       clka = SiS_Pr->CSR2B;
    2183. 

  2183.       clkb = SiS_Pr->CSR2C;
    2184. 

  2184.    } else {
    2185. 

  2185.       index = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
    2186. 

  2186.       if((SiS_Pr->SiS_VBType & VB_SIS30xBLV) &&
    2187. 

  2187. 	 (SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA)) {
    2188. 

  2188. 	 /* Alternate for 1600x1200 LCDA */
    2189. 

  2189. 	 if((index == 0x21) && (SiS_Pr->Alternate1600x1200)) index = 0x72;
    2190. 

  2190. 	 clka = SiS_Pr->SiS_VBVCLKData[index].Part4_A;
    2191. 

  2191. 	 clkb = SiS_Pr->SiS_VBVCLKData[index].Part4_B;
    2192. 

  2192.       } else {
    2193. 

  2193. 	 clka = SiS_Pr->SiS_VCLKData[index].SR2B;
    2194. 

  2194. 	 clkb = SiS_Pr->SiS_VCLKData[index].SR2C;
    2195. 

  2195.       }
    2196. 

  2196.    }
    2197. 

  2197. 

  2198.    SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x31,0xCF);
    2199. 

  2199. 

  2200.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,clka);
    2201. 

  2201.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,clkb);
    2202. 

  2202. 

  2203.    if(SiS_Pr->ChipType >= SIS_315H) {
    2204. 

  2204. #ifdef CONFIG_FB_SIS_315
    2205. 

  2205.       SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x01);
    2206. 

  2206.       if(SiS_Pr->ChipType == XGI_20) {
    2207. 

  2207.          unsigned short mf = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    2208. 

  2208. 	 if(mf & HalfDCLK) {
    2209. 

  2209. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,SiS_GetReg(SiS_Pr->SiS_P3c4,0x2b));
    2210. 

  2210. 	    clkb = SiS_GetReg(SiS_Pr->SiS_P3c4,0x2c);
    2211. 

  2211. 	    clkb = (((clkb & 0x1f) << 1) + 1) | (clkb & 0xe0);
    2212. 

  2212. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,clkb);
    2213. 

  2213. 	 }
    2214. 

  2214.       }
    2215. 

  2215. #endif
    2216. 

  2216.    } else {
    2217. 

  2217.       SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
    2218. 

  2218.    }
    2219. 

  2219. }
    2220. 

  2220. 

  2221. /*********************************************/
    2222. 

  2222. /*                  FIFO                     */
    2223. 

  2223. /*********************************************/
    2224. 

  2224. 

  2225. #ifdef CONFIG_FB_SIS_300
    2226. 

  2226. void
    2227. 

  2227. SiS_GetFIFOThresholdIndex300(struct SiS_Private *SiS_Pr, unsigned short *idx1,
    2228. 

  2228. 		unsigned short *idx2)
    2229. 

  2229. {
    2230. 

  2230.    unsigned short temp1, temp2;
    2231. 

  2231.    static const unsigned char ThTiming[8] = {
    2232. 

  2232. 		1, 2, 2, 3, 0, 1, 1, 2
    2233. 

  2233.    };
    2234. 

  2234. 

  2235.    temp1 = temp2 = (SiS_GetReg(SiS_Pr->SiS_P3c4,0x18) & 0x62) >> 1;
    2236. 

  2236.    (*idx2) = (unsigned short)(ThTiming[((temp2 >> 3) | temp1) & 0x07]);
    2237. 

  2237.    (*idx1) = (unsigned short)(SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) >> 6) & 0x03;
    2238. 

  2238.    (*idx1) |= (unsigned short)(((SiS_GetReg(SiS_Pr->SiS_P3c4,0x14) >> 4) & 0x0c));
    2239. 

  2239.    (*idx1) <<= 1;
    2240. 

  2240. }
    2241. 

  2241. 

  2242. static unsigned short
    2243. 

  2243. SiS_GetFIFOThresholdA300(unsigned short idx1, unsigned short idx2)
    2244. 

  2244. {
    2245. 

  2245.    static const unsigned char ThLowA[8 * 3] = {
    2246. 

  2246. 		61, 3,52, 5,68, 7,100,11,
    2247. 

  2247. 		43, 3,42, 5,54, 7, 78,11,
    2248. 

  2248. 		34, 3,37, 5,47, 7, 67,11
    2249. 

  2249.    };
    2250. 

  2250. 

  2251.    return (unsigned short)((ThLowA[idx1 + 1] * idx2) + ThLowA[idx1]);
    2252. 

  2252. }
    2253. 

  2253. 

  2254. unsigned short
    2255. 

  2255. SiS_GetFIFOThresholdB300(unsigned short idx1, unsigned short idx2)
    2256. 

  2256. {
    2257. 

  2257.    static const unsigned char ThLowB[8 * 3] = {
    2258. 

  2258. 		81, 4,72, 6,88, 8,120,12,
    2259. 

  2259. 		55, 4,54, 6,66, 8, 90,12,
    2260. 

  2260. 		42, 4,45, 6,55, 8, 75,12
    2261. 

  2261.    };
    2262. 

  2262. 

  2263.    return (unsigned short)((ThLowB[idx1 + 1] * idx2) + ThLowB[idx1]);
    2264. 

  2264. }
    2265. 

  2265. 

  2266. static unsigned short
    2267. 

  2267. SiS_DoCalcDelay(struct SiS_Private *SiS_Pr, unsigned short MCLK, unsigned short VCLK,
    2268. 

  2268. 		unsigned short colordepth, unsigned short key)
    2269. 

  2269. {
    2270. 

  2270.    unsigned short idx1, idx2;
    2271. 

  2271.    unsigned int   longtemp = VCLK * colordepth;
    2272. 

  2272. 

  2273.    SiS_GetFIFOThresholdIndex300(SiS_Pr, &idx1, &idx2);
    2274. 

  2274. 

  2275.    if(key == 0) {
    2276. 

  2276.       longtemp *= SiS_GetFIFOThresholdA300(idx1, idx2);
    2277. 

  2277.    } else {
    2278. 

  2278.       longtemp *= SiS_GetFIFOThresholdB300(idx1, idx2);
    2279. 

  2279.    }
    2280. 

  2280.    idx1 = longtemp % (MCLK * 16);
    2281. 

  2281.    longtemp /= (MCLK * 16);
    2282. 

  2282.    if(idx1) longtemp++;
    2283. 

  2283.    return (unsigned short)longtemp;
    2284. 

  2284. }
    2285. 

  2285. 

  2286. static unsigned short
    2287. 

  2287. SiS_CalcDelay(struct SiS_Private *SiS_Pr, unsigned short VCLK,
    2288. 

  2288. 		unsigned short colordepth, unsigned short MCLK)
    2289. 

  2289. {
    2290. 

  2290.    unsigned short temp1, temp2;
    2291. 

  2291. 

  2292.    temp2 = SiS_DoCalcDelay(SiS_Pr, MCLK, VCLK, colordepth, 0);
    2293. 

  2293.    temp1 = SiS_DoCalcDelay(SiS_Pr, MCLK, VCLK, colordepth, 1);
    2294. 

  2294.    if(temp1 < 4) temp1 = 4;
    2295. 

  2295.    temp1 -= 4;
    2296. 

  2296.    if(temp2 < temp1) temp2 = temp1;
    2297. 

  2297.    return temp2;
    2298. 

  2298. }
    2299. 

  2299. 

  2300. static void
    2301. 

  2301. SiS_SetCRT1FIFO_300(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2302. 

  2302. 		unsigned short RefreshRateTableIndex)
    2303. 

  2303. {
    2304. 

  2304.    unsigned short ThresholdLow = 0;
    2305. 

  2305.    unsigned short temp, index, VCLK, MCLK, colorth;
    2306. 

  2306.    static const unsigned short colortharray[6] = { 1, 1, 2, 2, 3, 4 };
    2307. 

  2307. 

  2308.    if(ModeNo > 0x13) {
    2309. 

  2309. 

  2310.       /* Get VCLK  */
    2311. 

  2311.       if(SiS_Pr->UseCustomMode) {
    2312. 

  2312. 	 VCLK = SiS_Pr->CSRClock;
    2313. 

  2313.       } else {
    2314. 

  2314. 	 index = SiS_GetRefCRTVCLK(SiS_Pr, RefreshRateTableIndex, SiS_Pr->SiS_UseWide);
    2315. 

  2315. 	 VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
    2316. 

  2316.       }
    2317. 

  2317. 

  2318.       /* Get half colordepth */
    2319. 

  2319.       colorth = colortharray[(SiS_Pr->SiS_ModeType - ModeEGA)];
    2320. 

  2320. 

  2321.       /* Get MCLK  */
    2322. 

  2322.       index = SiS_GetReg(SiS_Pr->SiS_P3c4,0x3A) & 0x07;
    2323. 

  2323.       MCLK = SiS_Pr->SiS_MCLKData_0[index].CLOCK;
    2324. 

  2324. 

  2325.       temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35) & 0xc3;
    2326. 

  2326.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x16,0x3c,temp);
    2327. 

  2327. 

  2328.       do {
    2329. 

  2329. 	 ThresholdLow = SiS_CalcDelay(SiS_Pr, VCLK, colorth, MCLK) + 1;
    2330. 

  2330. 	 if(ThresholdLow < 0x13) break;
    2331. 

  2331. 	 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x16,0xfc);
    2332. 

  2332. 	 ThresholdLow = 0x13;
    2333. 

  2333. 	 temp = SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) >> 6;
    2334. 

  2334. 	 if(!temp) break;
    2335. 

  2335. 	 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x16,0x3f,((temp - 1) << 6));
    2336. 

  2336.       } while(0);
    2337. 

  2337. 

  2338.    } else ThresholdLow = 2;
    2339. 

  2339. 

  2340.    /* Write CRT/CPU threshold low, CRT/Engine threshold high */
    2341. 

  2341.    temp = (ThresholdLow << 4) | 0x0f;
    2342. 

  2342.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,temp);
    2343. 

  2343. 

  2344.    temp = (ThresholdLow & 0x10) << 1;
    2345. 

  2345.    if(ModeNo > 0x13) temp |= 0x40;
    2346. 

  2346.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0f,0x9f,temp);
    2347. 

  2347. 

  2348.    /* What is this? */
    2349. 

  2349.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x3B,0x09);
    2350. 

  2350. 

  2351.    /* Write CRT/CPU threshold high */
    2352. 

  2352.    temp = ThresholdLow + 3;
    2353. 

  2353.    if(temp > 0x0f) temp = 0x0f;
    2354. 

  2354.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x09,temp);
    2355. 

  2355. }
    2356. 

  2356. 

  2357. unsigned short
    2358. 

  2358. SiS_GetLatencyFactor630(struct SiS_Private *SiS_Pr, unsigned short index)
    2359. 

  2359. {
    2360. 

  2360.    static const unsigned char LatencyFactor[] = {
    2361. 

  2361. 		97, 88, 86, 79, 77,  0,       /* 64  bit    BQ=2   */
    2362. 

  2362. 		 0, 87, 85, 78, 76, 54,       /* 64  bit    BQ=1   */
    2363. 

  2363. 		97, 88, 86, 79, 77,  0,       /* 128 bit    BQ=2   */
    2364. 

  2364. 		 0, 79, 77, 70, 68, 48,       /* 128 bit    BQ=1   */
    2365. 

  2365. 		80, 72, 69, 63, 61,  0,       /* 64  bit    BQ=2   */
    2366. 

  2366. 		 0, 70, 68, 61, 59, 37,       /* 64  bit    BQ=1   */
    2367. 

  2367. 		86, 77, 75, 68, 66,  0,       /* 128 bit    BQ=2   */
    2368. 

  2368. 		 0, 68, 66, 59, 57, 37        /* 128 bit    BQ=1   */
    2369. 

  2369.    };
    2370. 

  2370.    static const unsigned char LatencyFactor730[] = {
    2371. 

  2371. 		 69, 63, 61,
    2372. 

  2372. 		 86, 79, 77,
    2373. 

  2373. 		103, 96, 94,
    2374. 

  2374. 		120,113,111,
    2375. 

  2375. 		137,130,128
    2376. 

  2376.    };
    2377. 

  2377. 

  2378.    if(SiS_Pr->ChipType == SIS_730) {
    2379. 

  2379.       return (unsigned short)LatencyFactor730[index];
    2380. 

  2380.    } else {
    2381. 

  2381.       return (unsigned short)LatencyFactor[index];
    2382. 

  2382.    }
    2383. 

  2383. }
    2384. 

  2384. 

  2385. static unsigned short
    2386. 

  2386. SiS_CalcDelay2(struct SiS_Private *SiS_Pr, unsigned char key)
    2387. 

  2387. {
    2388. 

  2388.    unsigned short index;
    2389. 

  2389. 

  2390.    if(SiS_Pr->ChipType == SIS_730) {
    2391. 

  2391.       index = ((key & 0x0f) * 3) + ((key & 0xc0) >> 6);
    2392. 

  2392.    } else {
    2393. 

  2393.       index = (key & 0xe0) >> 5;
    2394. 

  2394.       if(key & 0x10)    index +=  6;
    2395. 

  2395.       if(!(key & 0x01)) index += 24;
    2396. 

  2396.       if(SiS_GetReg(SiS_Pr->SiS_P3c4,0x14) & 0x80) index += 12;
    2397. 

  2397.    }
    2398. 

  2398.    return SiS_GetLatencyFactor630(SiS_Pr, index);
    2399. 

  2399. }
    2400. 

  2400. 

  2401. static void
    2402. 

  2402. SiS_SetCRT1FIFO_630(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2403. 

  2403.                     unsigned short RefreshRateTableIndex)
    2404. 

  2404. {
    2405. 

  2405.    unsigned short  ThresholdLow = 0;
    2406. 

  2406.    unsigned short  i, data, VCLK, MCLK16, colorth = 0;
    2407. 

  2407.    unsigned int    templ, datal;
    2408. 

  2408.    const unsigned char *queuedata = NULL;
    2409. 

  2409.    static const unsigned char FQBQData[21] = {
    2410. 

  2410. 		0x01,0x21,0x41,0x61,0x81,
    2411. 

  2411. 		0x31,0x51,0x71,0x91,0xb1,
    2412. 

  2412. 		0x00,0x20,0x40,0x60,0x80,
    2413. 

  2413. 		0x30,0x50,0x70,0x90,0xb0,
    2414. 

  2414. 		0xff
    2415. 

  2415.    };
    2416. 

  2416.    static const unsigned char FQBQData730[16] = {
    2417. 

  2417. 		0x34,0x74,0xb4,
    2418. 

  2418. 		0x23,0x63,0xa3,
    2419. 

  2419. 		0x12,0x52,0x92,
    2420. 

  2420. 		0x01,0x41,0x81,
    2421. 

  2421. 		0x00,0x40,0x80,
    2422. 

  2422. 		0xff
    2423. 

  2423.    };
    2424. 

  2424.    static const unsigned short colortharray[6] = {
    2425. 

  2425. 		1, 1, 2, 2, 3, 4
    2426. 

  2426.    };
    2427. 

  2427. 

  2428.    i = 0;
    2429. 

  2429. 

  2430.    if(ModeNo > 0x13) {
    2431. 

  2431. 

  2432.       /* Get VCLK  */
    2433. 

  2433.       if(SiS_Pr->UseCustomMode) {
    2434. 

  2434. 	 VCLK = SiS_Pr->CSRClock;
    2435. 

  2435.       } else {
    2436. 

  2436. 	 data = SiS_GetRefCRTVCLK(SiS_Pr, RefreshRateTableIndex, SiS_Pr->SiS_UseWide);
    2437. 

  2437. 	 VCLK = SiS_Pr->SiS_VCLKData[data].CLOCK;
    2438. 

  2438.       }
    2439. 

  2439. 

  2440.       /* Get MCLK * 16 */
    2441. 

  2441.       data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x1A) & 0x07;
    2442. 

  2442.       MCLK16 = SiS_Pr->SiS_MCLKData_0[data].CLOCK * 16;
    2443. 

  2443. 

  2444.       /* Get half colordepth */
    2445. 

  2445.       colorth = colortharray[(SiS_Pr->SiS_ModeType - ModeEGA)];
    2446. 

  2446. 

  2447.       if(SiS_Pr->ChipType == SIS_730) {
    2448. 

  2448. 	 queuedata = &FQBQData730[0];
    2449. 

  2449.       } else {
    2450. 

  2450. 	 queuedata = &FQBQData[0];
    2451. 

  2451.       }
    2452. 

  2452. 

  2453.       do {
    2454. 

  2454. 	 templ = SiS_CalcDelay2(SiS_Pr, queuedata[i]) * VCLK * colorth;
    2455. 

  2455. 

  2456. 	 datal = templ % MCLK16;
    2457. 

  2457. 	 templ = (templ / MCLK16) + 1;
    2458. 

  2458. 	 if(datal) templ++;
    2459. 

  2459. 

  2460. 	 if(templ > 0x13) {
    2461. 

  2461. 	    if(queuedata[i + 1] == 0xFF) {
    2462. 

  2462. 	       ThresholdLow = 0x13;
    2463. 

  2463. 	       break;
    2464. 

  2464. 	    }
    2465. 

  2465. 	    i++;
    2466. 

  2466. 	 } else {
    2467. 

  2467. 	    ThresholdLow = templ;
    2468. 

  2468. 	    break;
    2469. 

  2469. 	 }
    2470. 

  2470.       } while(queuedata[i] != 0xFF);
    2471. 

  2471. 

  2472.    } else {
    2473. 

  2473. 

  2474.       if(SiS_Pr->ChipType != SIS_730) i = 9;
    2475. 

  2475.       ThresholdLow = 0x02;
    2476. 

  2476. 

  2477.    }
    2478. 

  2478. 

  2479.    /* Write CRT/CPU threshold low, CRT/Engine threshold high */
    2480. 

  2480.    data = ((ThresholdLow & 0x0f) << 4) | 0x0f;
    2481. 

  2481.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,data);
    2482. 

  2482. 

  2483.    data = (ThresholdLow & 0x10) << 1;
    2484. 

  2484.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xDF,data);
    2485. 

  2485. 

  2486.    /* What is this? */
    2487. 

  2487.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x3B,0x09);
    2488. 

  2488. 

  2489.    /* Write CRT/CPU threshold high (gap = 3) */
    2490. 

  2490.    data = ThresholdLow + 3;
    2491. 

  2491.    if(data > 0x0f) data = 0x0f;
    2492. 

  2492.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x09,0x80,data);
    2493. 

  2493. 

  2494.   /* Write foreground and background queue */
    2495. 

  2495.    templ = sisfb_read_nbridge_pci_dword(SiS_Pr, 0x50);
    2496. 

  2496. 

  2497.    if(SiS_Pr->ChipType == SIS_730) {
    2498. 

  2498. 

  2499.       templ &= 0xfffff9ff;
    2500. 

  2500.       templ |= ((queuedata[i] & 0xc0) << 3);
    2501. 

  2501. 

  2502.    } else {
    2503. 

  2503. 

  2504.       templ &= 0xf0ffffff;
    2505. 

  2505.       if( (ModeNo <= 0x13) &&
    2506. 

  2506.           (SiS_Pr->ChipType == SIS_630) &&
    2507. 

  2507. 	  (SiS_Pr->ChipRevision >= 0x30) ) {
    2508. 

  2508. 	 templ |= 0x0b000000;
    2509. 

  2509.       } else {
    2510. 

  2510.          templ |= ((queuedata[i] & 0xf0) << 20);
    2511. 

  2511.       }
    2512. 

  2512. 

  2513.    }
    2514. 

  2514. 

  2515.    sisfb_write_nbridge_pci_dword(SiS_Pr, 0x50, templ);
    2516. 

  2516.    templ = sisfb_read_nbridge_pci_dword(SiS_Pr, 0xA0);
    2517. 

  2517. 

  2518.    /* GUI grant timer (PCI config 0xA3) */
    2519. 

  2519.    if(SiS_Pr->ChipType == SIS_730) {
    2520. 

  2520. 

  2521.       templ &= 0x00ffffff;
    2522. 

  2522.       datal = queuedata[i] << 8;
    2523. 

  2523.       templ |= (((datal & 0x0f00) | ((datal & 0x3000) >> 8)) << 20);
    2524. 

  2524. 

  2525.    } else {
    2526. 

  2526. 

  2527.       templ &= 0xf0ffffff;
    2528. 

  2528.       templ |= ((queuedata[i] & 0x0f) << 24);
    2529. 

  2529. 

  2530.    }
    2531. 

  2531. 

  2532.    sisfb_write_nbridge_pci_dword(SiS_Pr, 0xA0, templ);
    2533. 

  2533. }
    2534. 

  2534. #endif /* CONFIG_FB_SIS_300 */
    2535. 

  2535. 

  2536. #ifdef CONFIG_FB_SIS_315
    2537. 

  2537. static void
    2538. 

  2538. SiS_SetCRT1FIFO_310(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
    2539. 

  2539. {
    2540. 

  2540.    unsigned short modeflag;
    2541. 

  2541. 

  2542.    /* disable auto-threshold */
    2543. 

  2543.    SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x3D,0xFE);
    2544. 

  2544. 

  2545.    modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    2546. 

  2546. 

  2547.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0xAE);
    2548. 

  2548.    SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x09,0xF0);
    2549. 

  2549.    if(ModeNo > 0x13) {
    2550. 

  2550.       if(SiS_Pr->ChipType >= XGI_20) {
    2551. 

  2551. 	 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
    2552. 

  2552. 	 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
    2553. 

  2553.       } else if(SiS_Pr->ChipType >= SIS_661) {
    2554. 

  2554. 	 if(!(modeflag & HalfDCLK)) {
    2555. 

  2555. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
    2556. 

  2556. 	    SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
    2557. 

  2557. 	 }
    2558. 

  2558.       } else {
    2559. 

  2559. 	 if((!(modeflag & DoubleScanMode)) || (!(modeflag & HalfDCLK))) {
    2560. 

  2560. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
    2561. 

  2561. 	    SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
    2562. 

  2562. 	 }
    2563. 

  2563.       }
    2564. 

  2564.    }
    2565. 

  2565. }
    2566. 

  2566. #endif
    2567. 

  2567. 

  2568. /*********************************************/
    2569. 

  2569. /*              MODE REGISTERS               */
    2570. 

  2570. /*********************************************/
    2571. 

  2571. 

  2572. static void
    2573. 

  2573. SiS_SetVCLKState(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2574. 

  2574. 		unsigned short RefreshRateTableIndex, unsigned short ModeIdIndex)
    2575. 

  2575. {
    2576. 

  2576.    unsigned short data = 0, VCLK = 0, index = 0;
    2577. 

  2577. 

  2578.    if(ModeNo > 0x13) {
    2579. 

  2579.       if(SiS_Pr->UseCustomMode) {
    2580. 

  2580.          VCLK = SiS_Pr->CSRClock;
    2581. 

  2581.       } else {
    2582. 

  2582.          index = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
    2583. 

  2583.          VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
    2584. 

  2584.       }
    2585. 

  2585.    }
    2586. 

  2586. 

  2587.    if(SiS_Pr->ChipType < SIS_315H) {
    2588. 

  2588. #ifdef CONFIG_FB_SIS_300
    2589. 

  2589.       if(VCLK > 150) data |= 0x80;
    2590. 

  2590.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0x7B,data);
    2591. 

  2591. 

  2592.       data = 0x00;
    2593. 

  2593.       if(VCLK >= 150) data |= 0x08;
    2594. 

  2594.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xF7,data);
    2595. 

  2595. #endif
    2596. 

  2596.    } else if(SiS_Pr->ChipType < XGI_20) {
    2597. 

  2597. #ifdef CONFIG_FB_SIS_315
    2598. 

  2598.       if(VCLK >= 166) data |= 0x0c;
    2599. 

  2599.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xf3,data);
    2600. 

  2600. 

  2601.       if(VCLK >= 166) {
    2602. 

  2602.          SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x1f,0xe7);
    2603. 

  2603.       }
    2604. 

  2604. #endif
    2605. 

  2605.    } else {
    2606. 

  2606. #ifdef CONFIG_FB_SIS_315
    2607. 

  2607.       if(VCLK >= 200) data |= 0x0c;
    2608. 

  2608.       if(SiS_Pr->ChipType == XGI_20) data &= ~0x04;
    2609. 

  2609.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xf3,data);
    2610. 

  2610.       if(SiS_Pr->ChipType != XGI_20) {
    2611. 

  2611.          data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x1f) & 0xe7;
    2612. 

  2612. 	 if(VCLK < 200) data |= 0x10;
    2613. 

  2613. 	 SiS_SetReg(SiS_Pr->SiS_P3c4,0x1f,data);
    2614. 

  2614.       }
    2615. 

  2615. #endif
    2616. 

  2616.    }
    2617. 

  2617. 

  2618.    /* DAC speed */
    2619. 

  2619.    if(SiS_Pr->ChipType >= SIS_661) {
    2620. 

  2620. 

  2621.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xE8,0x10);
    2622. 

  2622. 

  2623.    } else {
    2624. 

  2624. 

  2625.       data = 0x03;
    2626. 

  2626.       if(VCLK >= 260)      data = 0x00;
    2627. 

  2627.       else if(VCLK >= 160) data = 0x01;
    2628. 

  2628.       else if(VCLK >= 135) data = 0x02;
    2629. 

  2629. 

  2630.       if(SiS_Pr->ChipType == SIS_540) {
    2631. 

  2631.          if((VCLK == 203) || (VCLK < 234)) data = 0x02;
    2632. 

  2632.       }
    2633. 

  2633. 

  2634.       if(SiS_Pr->ChipType < SIS_315H) {
    2635. 

  2635.          SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xFC,data);
    2636. 

  2636.       } else {
    2637. 

  2637.          if(SiS_Pr->ChipType > SIS_315PRO) {
    2638. 

  2638.             if(ModeNo > 0x13) data &= 0xfc;
    2639. 

  2639.          }
    2640. 

  2640.          SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xF8,data);
    2641. 

  2641.       }
    2642. 

  2642. 

  2643.    }
    2644. 

  2644. }
    2645. 

  2645. 

  2646. static void
    2647. 

  2647. SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    2648. 

  2648. 		unsigned short ModeIdIndex, unsigned short RRTI)
    2649. 

  2649. {
    2650. 

  2650.    unsigned short data, infoflag = 0, modeflag, resindex;
    2651. 

  2651. #ifdef CONFIG_FB_SIS_315
    2652. 

  2652.    unsigned char  *ROMAddr  = SiS_Pr->VirtualRomBase;
    2653. 

  2653.    unsigned short data2, data3;
    2654. 

  2654. #endif
    2655. 

  2655. 

  2656.    modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    2657. 

  2657. 

  2658.    if(SiS_Pr->UseCustomMode) {
    2659. 

  2659.       infoflag = SiS_Pr->CInfoFlag;
    2660. 

  2660.    } else {
    2661. 

  2661.       resindex = SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex);
    2662. 

  2662.       if(ModeNo > 0x13) {
    2663. 

  2663. 	 infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
    2664. 

  2664.       }
    2665. 

  2665.    }
    2666. 

  2666. 

  2667.    /* Disable DPMS */
    2668. 

  2668.    SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x1F,0x3F);
    2669. 

  2669. 

  2670.    data = 0;
    2671. 

  2671.    if(ModeNo > 0x13) {
    2672. 

  2672.       if(SiS_Pr->SiS_ModeType > ModeEGA) {
    2673. 

  2673.          data |= 0x02;
    2674. 

  2674.          data |= ((SiS_Pr->SiS_ModeType - ModeVGA) << 2);
    2675. 

  2675.       }
    2676. 

  2676.       if(infoflag & InterlaceMode) data |= 0x20;
    2677. 

  2677.    }
    2678. 

  2678.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x06,0xC0,data);
    2679. 

  2679. 

  2680.    if(SiS_Pr->ChipType != SIS_300) {
    2681. 

  2681.       data = 0;
    2682. 

  2682.       if(infoflag & InterlaceMode) {
    2683. 

  2683. 	 /* data = (Hsync / 8) - ((Htotal / 8) / 2) + 3 */
    2684. 

  2684. 	 int hrs = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x04) |
    2685. 

  2685. 		    ((SiS_GetReg(SiS_Pr->SiS_P3c4,0x0b) & 0xc0) << 2)) - 3;
    2686. 

  2686. 	 int hto = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x00) |
    2687. 

  2687. 		    ((SiS_GetReg(SiS_Pr->SiS_P3c4,0x0b) & 0x03) << 8)) + 5;
    2688. 

  2688. 	 data = hrs - (hto >> 1) + 3;
    2689. 

  2689.       }
    2690. 

  2690.       SiS_SetReg(SiS_Pr->SiS_P3d4,0x19,data);
    2691. 

  2691.       SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x1a,0xFC,((data >> 8) & 0x03));
    2692. 

  2692.    }
    2693. 

  2693. 

  2694.    if(modeflag & HalfDCLK) {
    2695. 

  2695.       SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x01,0x08);
    2696. 

  2696.    }
    2697. 

  2697. 

  2698.    data = 0;
    2699. 

  2699.    if(modeflag & LineCompareOff) data = 0x08;
    2700. 

  2700.    if(SiS_Pr->ChipType == SIS_300) {
    2701. 

  2701.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xF7,data);
    2702. 

  2702.    } else {
    2703. 

  2703.       if(SiS_Pr->ChipType >= XGI_20) data |= 0x20;
    2704. 

  2704.       if(SiS_Pr->SiS_ModeType == ModeEGA) {
    2705. 

  2705. 	 if(ModeNo > 0x13) {
    2706. 

  2706. 	    data |= 0x40;
    2707. 

  2707. 	 }
    2708. 

  2708.       }
    2709. 

  2709.       SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xB7,data);
    2710. 

  2710.    }
    2711. 

  2711. 

  2712. #ifdef CONFIG_FB_SIS_315
    2713. 

  2713.    if(SiS_Pr->ChipType >= SIS_315H) {
    2714. 

  2714.       SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x31,0xfb);
    2715. 

  2715.    }
    2716. 

  2716. 

  2717.    if(SiS_Pr->ChipType == SIS_315PRO) {
    2718. 

  2718. 

  2719.       data = SiS_Pr->SiS_SR15[(2 * 4) + SiS_Get310DRAMType(SiS_Pr)];
    2720. 

  2720.       if(SiS_Pr->SiS_ModeType == ModeText) {
    2721. 

  2721. 	 data &= 0xc7;
    2722. 

  2722.       } else {
    2723. 

  2723. 	 data2 = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, RRTI) >> 1;
    2724. 

  2724. 	 if(infoflag & InterlaceMode) data2 >>= 1;
    2725. 

  2725. 	 data3 = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex) >> 1;
    2726. 

  2726. 	 if(data3) data2 /= data3;
    2727. 

  2727. 	 if(data2 >= 0x50) {
    2728. 

  2728. 	    data &= 0x0f;
    2729. 

  2729. 	    data |= 0x50;
    2730. 

  2730. 	 }
    2731. 

  2731.       }
    2732. 

  2732.       SiS_SetReg(SiS_Pr->SiS_P3c4,0x17,data);
    2733. 

  2733. 

  2734.    } else if((SiS_Pr->ChipType == SIS_330) || (SiS_Pr->SiS_SysFlags & SF_760LFB)) {
    2735. 

  2735. 

  2736.       data = SiS_Get310DRAMType(SiS_Pr);
    2737. 

  2737.       if(SiS_Pr->ChipType == SIS_330) {
    2738. 

  2738. 	 data = SiS_Pr->SiS_SR15[(2 * 4) + data];
    2739. 

  2739.       } else {
    2740. 

  2740. 	 if(SiS_Pr->SiS_ROMNew)	     data = ROMAddr[0xf6];
    2741. 

  2741. 	 else if(SiS_Pr->SiS_UseROM) data = ROMAddr[0x100 + data];
    2742. 

  2742. 	 else			     data = 0xba;
    2743. 

  2743.       }
    2744. 

  2744.       if(SiS_Pr->SiS_ModeType <= ModeEGA) {
    2745. 

  2745. 	 data &= 0xc7;
    2746. 

  2746.       } else {
    2747. 

  2747. 	 if(SiS_Pr->UseCustomMode) {
    2748. 

  2748. 	    data2 = SiS_Pr->CSRClock;
    2749. 

  2749. 	 } else {
    2750. 

  2750. 	    data2 = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
    2751. 

  2751. 	    data2 = SiS_Pr->SiS_VCLKData[data2].CLOCK;
    2752. 

  2752. 	 }
    2753. 

  2753. 

  2754. 	 data3 = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex) >> 1;
    2755. 

  2755. 	 if(data3) data2 *= data3;
    2756. 

  2756. 

  2757. 	 data2 = ((unsigned int)(SiS_GetMCLK(SiS_Pr) * 1024)) / data2;
    2758. 

  2758. 

  2759. 	 if(SiS_Pr->ChipType == SIS_330) {
    2760. 

  2760. 	    if(SiS_Pr->SiS_ModeType != Mode16Bpp) {
    2761. 

  2761. 	       if     (data2 >= 0x19c) data = 0xba;
    2762. 

  2762. 	       else if(data2 >= 0x140) data = 0x7a;
    2763. 

  2763. 	       else if(data2 >= 0x101) data = 0x3a;
    2764. 

  2764. 	       else if(data2 >= 0xf5)  data = 0x32;
    2765. 

  2765. 	       else if(data2 >= 0xe2)  data = 0x2a;
    2766. 

  2766. 	       else if(data2 >= 0xc4)  data = 0x22;
    2767. 

  2767. 	       else if(data2 >= 0xac)  data = 0x1a;
    2768. 

  2768. 	       else if(data2 >= 0x9e)  data = 0x12;
    2769. 

  2769. 	       else if(data2 >= 0x8e)  data = 0x0a;
    2770. 

  2770. 	       else                    data = 0x02;
    2771. 

  2771. 	    } else {
    2772. 

  2772. 	       if(data2 >= 0x127)      data = 0xba;
    2773. 

  2773. 	       else                    data = 0x7a;
    2774. 

  2774. 	    }
    2775. 

  2775. 	 } else {  /* 76x+LFB */
    2776. 

  2776. 	    if     (data2 >= 0x190) data = 0xba;
    2777. 

  2777. 	    else if(data2 >= 0xff)  data = 0x7a;
    2778. 

  2778. 	    else if(data2 >= 0xd3)  data = 0x3a;
    2779. 

  2779. 	    else if(data2 >= 0xa9)  data = 0x1a;
    2780. 

  2780. 	    else if(data2 >= 0x93)  data = 0x0a;
    2781. 

  2781. 	    else                    data = 0x02;
    2782. 

  2782. 	 }
    2783. 

  2783.       }
    2784. 

  2784.       SiS_SetReg(SiS_Pr->SiS_P3c4,0x17,data);
    2785. 

  2785. 

  2786.    }
    2787. 

  2787.       /* XGI: Nothing. */
    2788. 

  2788.       /* TODO: Check SiS340 */
    2789. 

  2789. #endif
    2790. 

  2790. 

  2791.    data = 0x60;
    2792. 

  2792.    if(SiS_Pr->SiS_ModeType != ModeText) {
    2793. 

  2793.       data ^= 0x60;
    2794. 

  2794.       if(SiS_Pr->SiS_ModeType != ModeEGA) {
    2795. 

  2795.          data ^= 0xA0;
    2796. 

  2796.       }
    2797. 

  2797.    }
    2798. 

  2798.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x21,0x1F,data);
    2799. 

  2799. 

  2800.    SiS_SetVCLKState(SiS_Pr, ModeNo, RRTI, ModeIdIndex);
    2801. 

  2801. 

  2802. #ifdef CONFIG_FB_SIS_315
    2803. 

  2803.    if(((SiS_Pr->ChipType >= SIS_315H) && (SiS_Pr->ChipType < SIS_661)) ||
    2804. 

  2804.        (SiS_Pr->ChipType == XGI_40)) {
    2805. 

  2805.       if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
    2806. 

  2806.          SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x2c);
    2807. 

  2807.       } else {
    2808. 

  2808.          SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x6c);
    2809. 

  2809.       }
    2810. 

  2810.    } else if(SiS_Pr->ChipType == XGI_20) {
    2811. 

  2811.       if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
    2812. 

  2812.          SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x33);
    2813. 

  2813.       } else {
    2814. 

  2814.          SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x73);
    2815. 

  2815.       }
    2816. 

  2816.       SiS_SetReg(SiS_Pr->SiS_P3d4,0x51,0x02);
    2817. 

  2817.    }
    2818. 

  2818. #endif
    2819. 

  2819. }
    2820. 

  2820. 

  2821. #ifdef CONFIG_FB_SIS_315
    2822. 

  2822. static void
    2823. 

  2823. SiS_SetupDualChip(struct SiS_Private *SiS_Pr)
    2824. 

  2824. {
    2825. 

  2825. #if 0
    2826. 

  2826.    /* TODO: Find out about IOAddress2 */
    2827. 

  2827.    SISIOADDRESS P2_3c2 = SiS_Pr->IOAddress2 + 0x12;
    2828. 

  2828.    SISIOADDRESS P2_3c4 = SiS_Pr->IOAddress2 + 0x14;
    2829. 

  2829.    SISIOADDRESS P2_3ce = SiS_Pr->IOAddress2 + 0x1e;
    2830. 

  2830.    int i;
    2831. 

  2831. 

  2832.    if((SiS_Pr->ChipRevision != 0) ||
    2833. 

  2833.       (!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x3a) & 0x04)))
    2834. 

  2834.       return;
    2835. 

  2835. 

  2836.    for(i = 0; i <= 4; i++) {					/* SR00 - SR04 */
    2837. 

  2837.       SiS_SetReg(P2_3c4,i,SiS_GetReg(SiS_Pr->SiS_P3c4,i));
    2838. 

  2838.    }
    2839. 

  2839.    for(i = 0; i <= 8; i++) {					/* GR00 - GR08 */
    2840. 

  2840.       SiS_SetReg(P2_3ce,i,SiS_GetReg(SiS_Pr->SiS_P3ce,i));
    2841. 

  2841.    }
    2842. 

  2842.    SiS_SetReg(P2_3c4,0x05,0x86);
    2843. 

  2843.    SiS_SetReg(P2_3c4,0x06,SiS_GetReg(SiS_Pr->SiS_P3c4,0x06));	/* SR06 */
    2844. 

  2844.    SiS_SetReg(P2_3c4,0x21,SiS_GetReg(SiS_Pr->SiS_P3c4,0x21));	/* SR21 */
    2845. 

  2845.    SiS_SetRegByte(P2_3c2,SiS_GetRegByte(SiS_Pr->SiS_P3cc));	/* MISC */
    2846. 

  2846.    SiS_SetReg(P2_3c4,0x05,0x00);
    2847. 

  2847. #endif
    2848. 

  2848. }
    2849. 

  2849. #endif
    2850. 

  2850. 

  2851. /*********************************************/
    2852. 

  2852. /*                 LOAD DAC                  */
    2853. 

  2853. /*********************************************/
    2854. 

  2854. 

  2855. static void
    2856. 

  2856. SiS_WriteDAC(struct SiS_Private *SiS_Pr, SISIOADDRESS DACData, unsigned short shiftflag,
    2857. 

  2857.              unsigned short dl, unsigned short ah, unsigned short al, unsigned short dh)
    2858. 

  2858. {
    2859. 

  2859.    unsigned short d1, d2, d3;
    2860. 

  2860. 

  2861.    switch(dl) {
    2862. 

  2862.    case  0: d1 = dh; d2 = ah; d3 = al; break;
    2863. 

  2863.    case  1: d1 = ah; d2 = al; d3 = dh; break;
    2864. 

  2864.    default: d1 = al; d2 = dh; d3 = ah;
    2865. 

  2865.    }
    2866. 

  2866.    SiS_SetRegByte(DACData, (d1 << shiftflag));
    2867. 

  2867.    SiS_SetRegByte(DACData, (d2 << shiftflag));
    2868. 

  2868.    SiS_SetRegByte(DACData, (d3 << shiftflag));
    2869. 

  2869. }
    2870. 

  2870. 

  2871. void
    2872. 

  2872. SiS_LoadDAC(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
    2873. 

  2873. {
    2874. 

  2874.    unsigned short data, data2, time, i, j, k, m, n, o;
    2875. 

  2875.    unsigned short si, di, bx, sf;
    2876. 

  2876.    SISIOADDRESS DACAddr, DACData;
    2877. 

  2877.    const unsigned char *table = NULL;
    2878. 

  2878. 

  2879.    data = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex) & DACInfoFlag;
    2880. 

  2880. 

  2881.    j = time = 64;
    2882. 

  2882.    if(data == 0x00)      table = SiS_MDA_DAC;
    2883. 

  2883.    else if(data == 0x08) table = SiS_CGA_DAC;
    2884. 

  2884.    else if(data == 0x10) table = SiS_EGA_DAC;
    2885. 

  2885.    else if(data == 0x18) {
    2886. 

  2886.       j = 16;
    2887. 

  2887.       time = 256;
    2888. 

  2888.       table = SiS_VGA_DAC;
    2889. 

  2889.    }
    2890. 

  2890. 

  2891.    if( ( (SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) &&        /* 301B-DH LCD */
    2892. 

  2892.          (SiS_Pr->SiS_VBType & VB_NoLCD) )        ||
    2893. 

  2893.        (SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA)       ||   /* LCDA */
    2894. 

  2894.        (!(SiS_Pr->SiS_SetFlag & ProgrammingCRT2)) ) {  /* Programming CRT1 */
    2895. 

  2895.       SiS_SetRegByte(SiS_Pr->SiS_P3c6,0xFF);
    2896. 

  2896.       DACAddr = SiS_Pr->SiS_P3c8;
    2897. 

  2897.       DACData = SiS_Pr->SiS_P3c9;
    2898. 

  2898.       sf = 0;
    2899. 

  2899.    } else {
    2900. 

  2900.       DACAddr = SiS_Pr->SiS_Part5Port;
    2901. 

  2901.       DACData = SiS_Pr->SiS_Part5Port + 1;
    2902. 

  2902.       sf = 2;
    2903. 

  2903.    }
    2904. 

  2904. 

  2905.    SiS_SetRegByte(DACAddr,0x00);
    2906. 

  2906. 

  2907.    for(i = 0; i < j; i++) {
    2908. 

  2908.       data = table[i];
    2909. 

  2909.       for(k = 0; k < 3; k++) {
    2910. 

  2910. 	data2 = 0;
    2911. 

  2911. 	if(data & 0x01) data2 += 0x2A;
    2912. 

  2912. 	if(data & 0x02) data2 += 0x15;
    2913. 

  2913. 	SiS_SetRegByte(DACData, (data2 << sf));
    2914. 

  2914. 	data >>= 2;
    2915. 

  2915.       }
    2916. 

  2916.    }
    2917. 

  2917. 

  2918.    if(time == 256) {
    2919. 

  2919.       for(i = 16; i < 32; i++) {
    2920. 

  2920. 	 data = table[i] << sf;
    2921. 

  2921. 	 for(k = 0; k < 3; k++) SiS_SetRegByte(DACData, data);
    2922. 

  2922.       }
    2923. 

  2923.       si = 32;
    2924. 

  2924.       for(m = 0; m < 9; m++) {
    2925. 

  2925. 	 di = si;
    2926. 

  2926. 	 bx = si + 4;
    2927. 

  2927. 	 for(n = 0; n < 3; n++) {
    2928. 

  2928. 	    for(o = 0; o < 5; o++) {
    2929. 

  2929. 	       SiS_WriteDAC(SiS_Pr, DACData, sf, n, table[di], table[bx], table[si]);
    2930. 

  2930. 	       si++;
    2931. 

  2931. 	    }
    2932. 

  2932. 	    si -= 2;
    2933. 

  2933. 	    for(o = 0; o < 3; o++) {
    2934. 

  2934. 	       SiS_WriteDAC(SiS_Pr, DACData, sf, n, table[di], table[si], table[bx]);
    2935. 

  2935. 	       si--;
    2936. 

  2936. 	    }
    2937. 

  2937. 	 }            /* for n < 3 */
    2938. 

  2938. 	 si += 5;
    2939. 

  2939.       }               /* for m < 9 */
    2940. 

  2940.    }
    2941. 

  2941. }
    2942. 

  2942. 

  2943. /*********************************************/
    2944. 

  2944. /*         SET CRT1 REGISTER GROUP           */
    2945. 

  2945. /*********************************************/
    2946. 

  2946. 

  2947. static void
    2948. 

  2948. SiS_SetCRT1Group(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
    2949. 

  2949. {
    2950. 

  2950.    unsigned short StandTableIndex, RefreshRateTableIndex;
    2951. 

  2951. 

  2952.    SiS_Pr->SiS_CRT1Mode = ModeNo;
    2953. 

  2953. 

  2954.    StandTableIndex = SiS_GetModePtr(SiS_Pr, ModeNo, ModeIdIndex);
    2955. 

  2955. 

  2956.    if(SiS_Pr->SiS_SetFlag & LowModeTests) {
    2957. 

  2957.       if(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2)) {
    2958. 

  2958.          SiS_DisableBridge(SiS_Pr);
    2959. 

  2959.       }
    2960. 

  2960.    }
    2961. 

  2961. 

  2962.    SiS_ResetSegmentRegisters(SiS_Pr);
    2963. 

  2963. 

  2964.    SiS_SetSeqRegs(SiS_Pr, StandTableIndex);
    2965. 

  2965.    SiS_SetMiscRegs(SiS_Pr, StandTableIndex);
    2966. 

  2966.    SiS_SetCRTCRegs(SiS_Pr, StandTableIndex);
    2967. 

  2967.    SiS_SetATTRegs(SiS_Pr, StandTableIndex);
    2968. 

  2968.    SiS_SetGRCRegs(SiS_Pr, StandTableIndex);
    2969. 

  2969.    SiS_ClearExt1Regs(SiS_Pr, ModeNo);
    2970. 

  2970.    SiS_ResetCRT1VCLK(SiS_Pr);
    2971. 

  2971. 

  2972.    SiS_Pr->SiS_SelectCRT2Rate = 0;
    2973. 

  2973.    SiS_Pr->SiS_SetFlag &= (~ProgrammingCRT2);
    2974. 

  2974. 

  2975.    if(SiS_Pr->SiS_VBInfo & SetSimuScanMode) {
    2976. 

  2976.       if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
    2977. 

  2977.          SiS_Pr->SiS_SetFlag |= ProgrammingCRT2;
    2978. 

  2978.       }
    2979. 

  2979.    }
    2980. 

  2980. 

  2981.    if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
    2982. 

  2982.       SiS_Pr->SiS_SetFlag |= ProgrammingCRT2;
    2983. 

  2983.    }
    2984. 

  2984. 

  2985.    RefreshRateTableIndex = SiS_GetRatePtr(SiS_Pr, ModeNo, ModeIdIndex);
    2986. 

  2986. 

  2987.    if(!(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA)) {
    2988. 

  2988.       SiS_Pr->SiS_SetFlag &= ~ProgrammingCRT2;
    2989. 

  2989.    }
    2990. 

  2990. 

  2991.    if(RefreshRateTableIndex != 0xFFFF) {
    2992. 

  2992.       SiS_SetCRT1Sync(SiS_Pr, RefreshRateTableIndex);
    2993. 

  2993.       SiS_SetCRT1CRTC(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
    2994. 

  2994.       SiS_SetCRT1Offset(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
    2995. 

  2995.       SiS_SetCRT1VCLK(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
    2996. 

  2996.    }
    2997. 

  2997. 

  2998.    switch(SiS_Pr->ChipType) {
    2999. 

  2999. #ifdef CONFIG_FB_SIS_300
    3000. 

  3000.    case SIS_300:
    3001. 

  3001.       SiS_SetCRT1FIFO_300(SiS_Pr, ModeNo, RefreshRateTableIndex);
    3002. 

  3002.       break;
    3003. 

  3003.    case SIS_540:
    3004. 

  3004.    case SIS_630:
    3005. 

  3005.    case SIS_730:
    3006. 

  3006.       SiS_SetCRT1FIFO_630(SiS_Pr, ModeNo, RefreshRateTableIndex);
    3007. 

  3007.       break;
    3008. 

  3008. #endif
    3009. 

  3009.    default:
    3010. 

  3010. #ifdef CONFIG_FB_SIS_315
    3011. 

  3011.       if(SiS_Pr->ChipType == XGI_20) {
    3012. 

  3012.          unsigned char sr2b = 0, sr2c = 0;
    3013. 

  3013.          switch(ModeNo) {
    3014. 

  3014. 	 case 0x00:
    3015. 

  3015. 	 case 0x01: sr2b = 0x4e; sr2c = 0xe9; break;
    3016. 

  3016. 	 case 0x04:
    3017. 

  3017. 	 case 0x05:
    3018. 

  3018. 	 case 0x0d: sr2b = 0x1b; sr2c = 0xe3; break;
    3019. 

  3019. 	 }
    3020. 

  3020. 	 if(sr2b) {
    3021. 

  3021.             SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,sr2b);
    3022. 

  3022. 	    SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,sr2c);
    3023. 

  3023. 	    SiS_SetRegByte(SiS_Pr->SiS_P3c2,(SiS_GetRegByte(SiS_Pr->SiS_P3cc) | 0x0c));
    3024. 

  3024. 	 }
    3025. 

  3025.       }
    3026. 

  3026.       SiS_SetCRT1FIFO_310(SiS_Pr, ModeNo, ModeIdIndex);
    3027. 

  3027. #endif
    3028. 

  3028.       break;
    3029. 

  3029.    }
    3030. 

  3030. 

  3031.    SiS_SetCRT1ModeRegs(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
    3032. 

  3032. 

  3033. #ifdef CONFIG_FB_SIS_315
    3034. 

  3034.    if(SiS_Pr->ChipType == XGI_40) {
    3035. 

  3035.       SiS_SetupDualChip(SiS_Pr);
    3036. 

  3036.    }
    3037. 

  3037. #endif
    3038. 

  3038. 

  3039.    SiS_LoadDAC(SiS_Pr, ModeNo, ModeIdIndex);
    3040. 

  3040. 

  3041.    if(SiS_Pr->SiS_flag_clearbuffer) {
    3042. 

  3042.       SiS_ClearBuffer(SiS_Pr, ModeNo);
    3043. 

  3043.    }
    3044. 

  3044. 

  3045.    if(!(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2 | SetCRT2ToLCDA))) {
    3046. 

  3046.       SiS_WaitRetrace1(SiS_Pr);
    3047. 

  3047.       SiS_DisplayOn(SiS_Pr);
    3048. 

  3048.    }
    3049. 

  3049. }
    3050. 

  3050. 

  3051. /*********************************************/
    3052. 

  3052. /*       HELPER: VIDEO BRIDGE PROG CLK       */
    3053. 

  3053. /*********************************************/
    3054. 

  3054. 

  3055. static void
    3056. 

  3056. SiS_InitVB(struct SiS_Private *SiS_Pr)
    3057. 

  3057. {
    3058. 

  3058.    unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
    3059. 

  3059. 

  3060.    SiS_Pr->Init_P4_0E = 0;
    3061. 

  3061.    if(SiS_Pr->SiS_ROMNew) {
    3062. 

  3062.       SiS_Pr->Init_P4_0E = ROMAddr[0x82];
    3063. 

  3063.    } else if(SiS_Pr->ChipType >= XGI_40) {
    3064. 

  3064.       if(SiS_Pr->SiS_XGIROM) {
    3065. 

  3065.          SiS_Pr->Init_P4_0E = ROMAddr[0x80];
    3066. 

  3066.       }
    3067. 

  3067.    }
    3068. 

  3068. }
    3069. 

  3069. 

  3070. static void
    3071. 

  3071. SiS_ResetVB(struct SiS_Private *SiS_Pr)
    3072. 

  3072. {
    3073. 

  3073. #ifdef CONFIG_FB_SIS_315
    3074. 

  3074.    unsigned char  *ROMAddr = SiS_Pr->VirtualRomBase;
    3075. 

  3075.    unsigned short temp;
    3076. 

  3076. 

  3077.    /* VB programming clock */
    3078. 

  3078.    if(SiS_Pr->SiS_UseROM) {
    3079. 

  3079.       if(SiS_Pr->ChipType < SIS_330) {
    3080. 

  3080. 	 temp = ROMAddr[VB310Data_1_2_Offset] | 0x40;
    3081. 

  3081. 	 if(SiS_Pr->SiS_ROMNew) temp = ROMAddr[0x80] | 0x40;
    3082. 

  3082. 	 SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
    3083. 

  3083.       } else if(SiS_Pr->ChipType >= SIS_661 && SiS_Pr->ChipType < XGI_20) {
    3084. 

  3084. 	 temp = ROMAddr[0x7e] | 0x40;
    3085. 

  3085. 	 if(SiS_Pr->SiS_ROMNew) temp = ROMAddr[0x80] | 0x40;
    3086. 

  3086. 	 SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
    3087. 

  3087.       }
    3088. 

  3088.    } else if(SiS_Pr->ChipType >= XGI_40) {
    3089. 

  3089.       temp = 0x40;
    3090. 

  3090.       if(SiS_Pr->SiS_XGIROM) temp |= ROMAddr[0x7e];
    3091. 

  3091.       /* Can we do this on any chipset? */
    3092. 

  3092.       SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
    3093. 

  3093.    }
    3094. 

  3094. #endif
    3095. 

  3095. }
    3096. 

  3096. 

  3097. /*********************************************/
    3098. 

  3098. /*    HELPER: SET VIDEO/CAPTURE REGISTERS    */
    3099. 

  3099. /*********************************************/
    3100. 

  3100. 

  3101. static void
    3102. 

  3102. SiS_StrangeStuff(struct SiS_Private *SiS_Pr)
    3103. 

  3103. {
    3104. 

  3104.    /* SiS65x and XGI set up some sort of "lock mode" for text
    3105. 

  3105.     * which locks CRT2 in some way to CRT1 timing. Disable
    3106. 

  3106.     * this here.
    3107. 

  3107.     */
    3108. 

  3108. #ifdef CONFIG_FB_SIS_315
    3109. 

  3109.    if((IS_SIS651) || (IS_SISM650) ||
    3110. 

  3110.       SiS_Pr->ChipType == SIS_340 ||
    3111. 

  3111.       SiS_Pr->ChipType == XGI_40) {
    3112. 

  3112.       SiS_SetReg(SiS_Pr->SiS_VidCapt, 0x3f, 0x00);   /* Fiddle with capture regs */
    3113. 

  3113.       SiS_SetReg(SiS_Pr->SiS_VidCapt, 0x00, 0x00);
    3114. 

  3114.       SiS_SetReg(SiS_Pr->SiS_VidPlay, 0x00, 0x86);   /* (BIOS does NOT unlock) */
    3115. 

  3115.       SiS_SetRegAND(SiS_Pr->SiS_VidPlay, 0x30, 0xfe); /* Fiddle with video regs */
    3116. 

  3116.       SiS_SetRegAND(SiS_Pr->SiS_VidPlay, 0x3f, 0xef);
    3117. 

  3117.    }
    3118. 

  3118.    /* !!! This does not support modes < 0x13 !!! */
    3119. 

  3119. #endif
    3120. 

  3120. }
    3121. 

  3121. 

  3122. /*********************************************/
    3123. 

  3123. /*     HELPER: SET AGP TIMING FOR SiS760     */
    3124. 

  3124. /*********************************************/
    3125. 

  3125. 

  3126. static void
    3127. 

  3127. SiS_Handle760(struct SiS_Private *SiS_Pr)
    3128. 

  3128. {
    3129. 

  3129. #ifdef CONFIG_FB_SIS_315
    3130. 

  3130.    unsigned int somebase;
    3131. 

  3131.    unsigned char temp1, temp2, temp3;
    3132. 

  3132. 

  3133.    if( (SiS_Pr->ChipType != SIS_760)                         ||
    3134. 

  3134.        ((SiS_GetReg(SiS_Pr->SiS_P3d4, 0x5c) & 0xf8) != 0x80) ||
    3135. 

  3135.        (!(SiS_Pr->SiS_SysFlags & SF_760LFB))                 ||
    3136. 

  3136.        (!(SiS_Pr->SiS_SysFlags & SF_760UMA)) )
    3137. 

  3137.       return;
    3138. 

  3138. 

  3139.    somebase = sisfb_read_mio_pci_word(SiS_Pr, 0x74);
    3140. 

  3140.    somebase &= 0xffff;
    3141. 

  3141. 

  3142.    if(somebase == 0) return;
    3143. 

  3143. 

  3144.    temp3 = SiS_GetRegByte((somebase + 0x85)) & 0xb7;
    3145. 

  3145. 

  3146.    if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
    3147. 

  3147.       temp1 = 0x21;
    3148. 

  3148.       temp2 = 0x03;
    3149. 

  3149.       temp3 |= 0x08;
    3150. 

  3150.    } else {
    3151. 

  3151.       temp1 = 0x25;
    3152. 

  3152.       temp2 = 0x0b;
    3153. 

  3153.    }
    3154. 

  3154. 

  3155.    sisfb_write_nbridge_pci_byte(SiS_Pr, 0x7e, temp1);
    3156. 

  3156.    sisfb_write_nbridge_pci_byte(SiS_Pr, 0x8d, temp2);
    3157. 

  3157. 

  3158.    SiS_SetRegByte((somebase + 0x85), temp3);
    3159. 

  3159. #endif
    3160. 

  3160. }
    3161. 

  3161. 

  3162. /*********************************************/
    3163. 

  3163. /*                 SiSSetMode()              */
    3164. 

  3164. /*********************************************/
    3165. 

  3165. 

  3166. bool
    3167. 

  3167. SiSSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
    3168. 

  3168. {
    3169. 

  3169.    SISIOADDRESS BaseAddr = SiS_Pr->IOAddress;
    3170. 

  3170.    unsigned short RealModeNo, ModeIdIndex;
    3171. 

  3171.    unsigned char  backupreg = 0;
    3172. 

  3172.    unsigned short KeepLockReg;
    3173. 

  3173. 

  3174.    SiS_Pr->UseCustomMode = false;
    3175. 

  3175.    SiS_Pr->CRT1UsesCustomMode = false;
    3176. 

  3176. 

  3177.    SiS_Pr->SiS_flag_clearbuffer = 0;
    3178. 

  3178. 

  3179.    if(SiS_Pr->UseCustomMode) {
    3180. 

  3180.       ModeNo = 0xfe;
    3181. 

  3181.    } else {
    3182. 

  3182.       if(!(ModeNo & 0x80)) SiS_Pr->SiS_flag_clearbuffer = 1;
    3183. 

  3183.       ModeNo &= 0x7f;
    3184. 

  3184.    }
    3185. 

  3185. 

  3186.    /* Don't use FSTN mode for CRT1 */
    3187. 

  3187.    RealModeNo = ModeNo;
    3188. 

  3188.    if(ModeNo == 0x5b) ModeNo = 0x56;
    3189. 

  3189. 

  3190.    SiSInitPtr(SiS_Pr);
    3191. 

  3191.    SiSRegInit(SiS_Pr, BaseAddr);
    3192. 

  3192.    SiS_GetSysFlags(SiS_Pr);
    3193. 

  3193. 

  3194.    SiS_Pr->SiS_VGAINFO = 0x11;
    3195. 

  3195. 

  3196.    KeepLockReg = SiS_GetReg(SiS_Pr->SiS_P3c4,0x05);
    3197. 

  3197.    SiS_SetReg(SiS_Pr->SiS_P3c4,0x05,0x86);
    3198. 

  3198. 

  3199.    SiSInitPCIetc(SiS_Pr);
    3200. 

  3200.    SiSSetLVDSetc(SiS_Pr);
    3201. 

  3201.    SiSDetermineROMUsage(SiS_Pr);
    3202. 

  3202. 

  3203.    SiS_UnLockCRT2(SiS_Pr);
    3204. 

  3204. 

  3205.    if(!SiS_Pr->UseCustomMode) {
    3206. 

  3206.       if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
    3207. 

  3207.    } else {
    3208. 

  3208.       ModeIdIndex = 0;
    3209. 

  3209.    }
    3210. 

  3210. 

  3211.    SiS_GetVBType(SiS_Pr);
    3212. 

  3212. 

  3213.    /* Init/restore some VB registers */
    3214. 

  3214.    SiS_InitVB(SiS_Pr);
    3215. 

  3215.    if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
    3216. 

  3216.       if(SiS_Pr->ChipType >= SIS_315H) {
    3217. 

  3217.          SiS_ResetVB(SiS_Pr);
    3218. 

  3218. 	 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x32,0x10);
    3219. 

  3219. 	 SiS_SetRegOR(SiS_Pr->SiS_Part2Port,0x00,0x0c);
    3220. 

  3220.          backupreg = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
    3221. 

  3221.       } else {
    3222. 

  3222.          backupreg = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35);
    3223. 

  3223.       }
    3224. 

  3224.    }
    3225. 

  3225. 

  3226.    /* Get VB information (connectors, connected devices) */
    3227. 

  3227.    SiS_GetVBInfo(SiS_Pr, ModeNo, ModeIdIndex, (SiS_Pr->UseCustomMode) ? 0 : 1);
    3228. 

  3228.    SiS_SetYPbPr(SiS_Pr);
    3229. 

  3229.    SiS_SetTVMode(SiS_Pr, ModeNo, ModeIdIndex);
    3230. 

  3230.    SiS_GetLCDResInfo(SiS_Pr, ModeNo, ModeIdIndex);
    3231. 

  3231.    SiS_SetLowModeTest(SiS_Pr, ModeNo);
    3232. 

  3232. 

  3233.    /* Check memory size (kernel framebuffer driver only) */
    3234. 

  3234.    if(!SiS_CheckMemorySize(SiS_Pr, ModeNo, ModeIdIndex)) {
    3235. 

  3235.       return false;
    3236. 

  3236.    }
    3237. 

  3237. 

  3238.    SiS_OpenCRTC(SiS_Pr);
    3239. 

  3239. 

  3240.    if(SiS_Pr->UseCustomMode) {
    3241. 

  3241.       SiS_Pr->CRT1UsesCustomMode = true;
    3242. 

  3242.       SiS_Pr->CSRClock_CRT1 = SiS_Pr->CSRClock;
    3243. 

  3243.       SiS_Pr->CModeFlag_CRT1 = SiS_Pr->CModeFlag;
    3244. 

  3244.    } else {
    3245. 

  3245.       SiS_Pr->CRT1UsesCustomMode = false;
    3246. 

  3246.    }
    3247. 

  3247. 

  3248.    /* Set mode on CRT1 */
    3249. 

  3249.    if( (SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SetCRT2ToLCDA)) ||
    3250. 

  3250.        (!(SiS_Pr->SiS_VBInfo & SwitchCRT2)) ) {
    3251. 

  3251.       SiS_SetCRT1Group(SiS_Pr, ModeNo, ModeIdIndex);
    3252. 

  3252.    }
    3253. 

  3253. 

  3254.    /* Set mode on CRT2 */
    3255. 

  3255.    if(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2 | SetCRT2ToLCDA)) {
    3256. 

  3256.       if( (SiS_Pr->SiS_VBType & VB_SISVB)    ||
    3257. 

  3257. 	  (SiS_Pr->SiS_IF_DEF_LVDS     == 1) ||
    3258. 

  3258. 	  (SiS_Pr->SiS_IF_DEF_CH70xx   != 0) ||
    3259. 

  3259. 	  (SiS_Pr->SiS_IF_DEF_TRUMPION != 0) ) {
    3260. 

  3260. 	 SiS_SetCRT2Group(SiS_Pr, RealModeNo);
    3261. 

  3261.       }
    3262. 

  3262.    }
    3263. 

  3263. 

  3264.    SiS_HandleCRT1(SiS_Pr);
    3265. 

  3265. 

  3266.    SiS_StrangeStuff(SiS_Pr);
    3267. 

  3267. 

  3268.    SiS_DisplayOn(SiS_Pr);
    3269. 

  3269.    SiS_SetRegByte(SiS_Pr->SiS_P3c6,0xFF);
    3270. 

  3270. 

  3271. #ifdef CONFIG_FB_SIS_315
    3272. 

  3272.    if(SiS_Pr->ChipType >= SIS_315H) {
    3273. 

  3273.       if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
    3274. 

  3274. 	 if(!(SiS_IsDualEdge(SiS_Pr))) {
    3275. 

  3275. 	    SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x13,0xfb);
    3276. 

  3276. 	 }
    3277. 

  3277.       }
    3278. 

  3278.    }
    3279. 

  3279. #endif
    3280. 

  3280. 

  3281.    if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
    3282. 

  3282.       if(SiS_Pr->ChipType >= SIS_315H) {
    3283. 

  3283. #ifdef CONFIG_FB_SIS_315
    3284. 

  3284. 	 if(!SiS_Pr->SiS_ROMNew) {
    3285. 

  3285. 	    if(SiS_IsVAMode(SiS_Pr)) {
    3286. 

  3286. 	       SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x35,0x01);
    3287. 

  3287. 	    } else {
    3288. 

  3288. 	       SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x35,0xFE);
    3289. 

  3289. 	    }
    3290. 

  3290. 	 }
    3291. 

  3291. 

  3292. 	 SiS_SetReg(SiS_Pr->SiS_P3d4,0x38,backupreg);
    3293. 

  3293. 

  3294. 	 if((IS_SIS650) && (SiS_GetReg(SiS_Pr->SiS_P3d4,0x30) & 0xfc)) {
    3295. 

  3295. 	    if((ModeNo == 0x03) || (ModeNo == 0x10)) {
    3296. 

  3296. 	       SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x51,0x80);
    3297. 

  3297. 	       SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x56,0x08);
    3298. 

  3298. 	    }
    3299. 

  3299. 	 }
    3300. 

  3300. 

  3301. 	 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x30) & SetCRT2ToLCD) {
    3302. 

  3302. 	    SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x38,0xfc);
    3303. 

  3303. 	 }
    3304. 

  3304. #endif
    3305. 

  3305.       } else if((SiS_Pr->ChipType == SIS_630) ||
    3306. 

  3306. 	        (SiS_Pr->ChipType == SIS_730)) {
    3307. 

  3307. 	 SiS_SetReg(SiS_Pr->SiS_P3d4,0x35,backupreg);
    3308. 

  3308.       }
    3309. 

  3309.    }
    3310. 

  3310. 

  3311.    SiS_CloseCRTC(SiS_Pr);
    3312. 

  3312. 

  3313.    SiS_Handle760(SiS_Pr);
    3314. 

  3314. 

  3315.    /* We never lock registers in XF86 */
    3316. 

  3316.    if(KeepLockReg != 0xA1) SiS_SetReg(SiS_Pr->SiS_P3c4,0x05,0x00);
    3317. 

  3317. 

  3318.    return true;
    3319. 

  3319. }
    3320. 

  3320. 

  3321. #ifndef GETBITSTR
    3322. 

  3322. #define BITMASK(h,l)    	(((unsigned)(1U << ((h)-(l)+1))-1)<<(l))
    3323. 

  3323. #define GENMASK(mask)   	BITMASK(1?mask,0?mask)
    3324. 

  3324. #define GETBITS(var,mask)   	(((var) & GENMASK(mask)) >> (0?mask))
    3325. 

  3325. #define GETBITSTR(val,from,to)  ((GETBITS(val,from)) << (0?to))
    3326. 

  3326. #endif
    3327. 

  3327. 

  3328. void
    3329. 

  3329. SiS_CalcCRRegisters(struct SiS_Private *SiS_Pr, int depth)
    3330. 

  3330. {
    3331. 

  3331.    int x = 1; /* Fix sync */
    3332. 

  3332. 

  3333.    SiS_Pr->CCRT1CRTC[0]  =  ((SiS_Pr->CHTotal >> 3) - 5) & 0xff;		/* CR0 */
    3334. 

  3334.    SiS_Pr->CCRT1CRTC[1]  =  (SiS_Pr->CHDisplay >> 3) - 1;			/* CR1 */
    3335. 

  3335.    SiS_Pr->CCRT1CRTC[2]  =  (SiS_Pr->CHBlankStart >> 3) - 1;			/* CR2 */
    3336. 

  3336.    SiS_Pr->CCRT1CRTC[3]  =  (((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x1F) | 0x80;	/* CR3 */
    3337. 

  3337.    SiS_Pr->CCRT1CRTC[4]  =  (SiS_Pr->CHSyncStart >> 3) + 3;			/* CR4 */
    3338. 

  3338.    SiS_Pr->CCRT1CRTC[5]  =  ((((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x20) << 2) |	/* CR5 */
    3339. 

  3339. 			    (((SiS_Pr->CHSyncEnd >> 3) + 3) & 0x1F);
    3340. 

  3340. 

  3341.    SiS_Pr->CCRT1CRTC[6]  =  (SiS_Pr->CVTotal       - 2) & 0xFF;			/* CR6 */
    3342. 

  3342.    SiS_Pr->CCRT1CRTC[7]  =  (((SiS_Pr->CVTotal     - 2) & 0x100) >> 8)		/* CR7 */
    3343. 

  3343. 			  | (((SiS_Pr->CVDisplay   - 1) & 0x100) >> 7)
    3344. 

  3344. 			  | (((SiS_Pr->CVSyncStart - x) & 0x100) >> 6)
    3345. 

  3345. 			  | (((SiS_Pr->CVBlankStart- 1) & 0x100) >> 5)
    3346. 

  3346. 			  | 0x10
    3347. 

  3347. 			  | (((SiS_Pr->CVTotal     - 2) & 0x200) >> 4)
    3348. 

  3348. 			  | (((SiS_Pr->CVDisplay   - 1) & 0x200) >> 3)
    3349. 

  3349. 			  | (((SiS_Pr->CVSyncStart - x) & 0x200) >> 2);
    3350. 

  3350. 

  3351.    SiS_Pr->CCRT1CRTC[16] = ((((SiS_Pr->CVBlankStart - 1) & 0x200) >> 4) >> 5); 	/* CR9 */
    3352. 

  3352. 

  3353.    if(depth != 8) {
    3354. 

  3354.       if(SiS_Pr->CHDisplay >= 1600)      SiS_Pr->CCRT1CRTC[16] |= 0x60;		/* SRE */
    3355. 

  3355.       else if(SiS_Pr->CHDisplay >= 640)  SiS_Pr->CCRT1CRTC[16] |= 0x40;
    3356. 

  3356.    }
    3357. 

  3357. 

  3358.    SiS_Pr->CCRT1CRTC[8] =  (SiS_Pr->CVSyncStart  - x) & 0xFF;			/* CR10 */
    3359. 

  3359.    SiS_Pr->CCRT1CRTC[9] =  ((SiS_Pr->CVSyncEnd   - x) & 0x0F) | 0x80;		/* CR11 */
    3360. 

  3360.    SiS_Pr->CCRT1CRTC[10] = (SiS_Pr->CVDisplay    - 1) & 0xFF;			/* CR12 */
    3361. 

  3361.    SiS_Pr->CCRT1CRTC[11] = (SiS_Pr->CVBlankStart - 1) & 0xFF;			/* CR15 */
    3362. 

  3362.    SiS_Pr->CCRT1CRTC[12] = (SiS_Pr->CVBlankEnd   - 1) & 0xFF;			/* CR16 */
    3363. 

  3363. 

  3364.    SiS_Pr->CCRT1CRTC[13] =							/* SRA */
    3365. 

  3365. 			GETBITSTR((SiS_Pr->CVTotal     -2), 10:10, 0:0) |
    3366. 

  3366. 			GETBITSTR((SiS_Pr->CVDisplay   -1), 10:10, 1:1) |
    3367. 

  3367. 			GETBITSTR((SiS_Pr->CVBlankStart-1), 10:10, 2:2) |
    3368. 

  3368. 			GETBITSTR((SiS_Pr->CVSyncStart -x), 10:10, 3:3) |
    3369. 

  3369. 			GETBITSTR((SiS_Pr->CVBlankEnd  -1),   8:8, 4:4) |
    3370. 

  3370. 			GETBITSTR((SiS_Pr->CVSyncEnd     ),   4:4, 5:5) ;
    3371. 

  3371. 

  3372.    SiS_Pr->CCRT1CRTC[14] =							/* SRB */
    3373. 

  3373. 			GETBITSTR((SiS_Pr->CHTotal      >> 3) - 5, 9:8, 1:0) |
    3374. 

  3374. 			GETBITSTR((SiS_Pr->CHDisplay    >> 3) - 1, 9:8, 3:2) |
    3375. 

  3375. 			GETBITSTR((SiS_Pr->CHBlankStart >> 3) - 1, 9:8, 5:4) |
    3376. 

  3376. 			GETBITSTR((SiS_Pr->CHSyncStart  >> 3) + 3, 9:8, 7:6) ;
    3377. 

  3377. 

  3378. 

  3379.    SiS_Pr->CCRT1CRTC[15] =							/* SRC */
    3380. 

  3380. 			GETBITSTR((SiS_Pr->CHBlankEnd >> 3) - 1, 7:6, 1:0) |
    3381. 

  3381. 			GETBITSTR((SiS_Pr->CHSyncEnd  >> 3) + 3, 5:5, 2:2) ;
    3382. 

  3382. }
    3383. 

  3383. 

  3384. void
    3385. 

  3385. SiS_CalcLCDACRT1Timing(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    3386. 

  3386. 		unsigned short ModeIdIndex)
    3387. 

  3387. {
    3388. 

  3388.    unsigned short modeflag, tempax, tempbx = 0, remaining = 0;
    3389. 

  3389.    unsigned short VGAHDE = SiS_Pr->SiS_VGAHDE;
    3390. 

  3390.    int i, j;
    3391. 

  3391. 

  3392.    /* 1:1 data: use data set by setcrt1crtc() */
    3393. 

  3393.    if(SiS_Pr->SiS_LCDInfo & LCDPass11) return;
    3394. 

  3394. 

  3395.    modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
    3396. 

  3396. 

  3397.    if(modeflag & HalfDCLK) VGAHDE >>= 1;
    3398. 

  3398. 

  3399.    SiS_Pr->CHDisplay = VGAHDE;
    3400. 

  3400.    SiS_Pr->CHBlankStart = VGAHDE;
    3401. 

  3401. 

  3402.    SiS_Pr->CVDisplay = SiS_Pr->SiS_VGAVDE;
    3403. 

  3403.    SiS_Pr->CVBlankStart = SiS_Pr->SiS_VGAVDE;
    3404. 

  3404. 

  3405.    if(SiS_Pr->ChipType < SIS_315H) {
    3406. 

  3406. #ifdef CONFIG_FB_SIS_300
    3407. 

  3407.       tempbx = SiS_Pr->SiS_VGAHT;
    3408. 

  3408.       if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3409. 

  3409.          tempbx = SiS_Pr->PanelHT;
    3410. 

  3410.       }
    3411. 

  3411.       if(modeflag & HalfDCLK) tempbx >>= 1;
    3412. 

  3412.       remaining = tempbx % 8;
    3413. 

  3413. #endif
    3414. 

  3414.    } else {
    3415. 

  3415. #ifdef CONFIG_FB_SIS_315
    3416. 

  3416.       /* OK for LCDA, LVDS */
    3417. 

  3417.       tempbx = SiS_Pr->PanelHT - SiS_Pr->PanelXRes;
    3418. 

  3418.       tempax = SiS_Pr->SiS_VGAHDE;  /* not /2 ! */
    3419. 

  3419.       if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3420. 

  3420.          tempax = SiS_Pr->PanelXRes;
    3421. 

  3421.       }
    3422. 

  3422.       tempbx += tempax;
    3423. 

  3423.       if(modeflag & HalfDCLK) tempbx -= VGAHDE;
    3424. 

  3424. #endif
    3425. 

  3425.    }
    3426. 

  3426.    SiS_Pr->CHTotal = SiS_Pr->CHBlankEnd = tempbx;
    3427. 

  3427. 

  3428.    if(SiS_Pr->ChipType < SIS_315H) {
    3429. 

  3429. #ifdef CONFIG_FB_SIS_300
    3430. 

  3430.       if(SiS_Pr->SiS_VGAHDE == SiS_Pr->PanelXRes) {
    3431. 

  3431. 	 SiS_Pr->CHSyncStart = SiS_Pr->SiS_VGAHDE + ((SiS_Pr->PanelHRS + 1) & ~1);
    3432. 

  3432. 	 SiS_Pr->CHSyncEnd = SiS_Pr->CHSyncStart + SiS_Pr->PanelHRE;
    3433. 

  3433. 	 if(modeflag & HalfDCLK) {
    3434. 

  3434. 	    SiS_Pr->CHSyncStart >>= 1;
    3435. 

  3435. 	    SiS_Pr->CHSyncEnd >>= 1;
    3436. 

  3436. 	 }
    3437. 

  3437.       } else if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3438. 

  3438. 	 tempax = (SiS_Pr->PanelXRes - SiS_Pr->SiS_VGAHDE) >> 1;
    3439. 

  3439. 	 tempbx = (SiS_Pr->PanelHRS + 1) & ~1;
    3440. 

  3440. 	 if(modeflag & HalfDCLK) {
    3441. 

  3441. 	    tempax >>= 1;
    3442. 

  3442. 	    tempbx >>= 1;
    3443. 

  3443. 	 }
    3444. 

  3444. 	 SiS_Pr->CHSyncStart = (VGAHDE + tempax + tempbx + 7) & ~7;
    3445. 

  3445. 	 tempax = SiS_Pr->PanelHRE + 7;
    3446. 

  3446. 	 if(modeflag & HalfDCLK) tempax >>= 1;
    3447. 

  3447. 	 SiS_Pr->CHSyncEnd = (SiS_Pr->CHSyncStart + tempax) & ~7;
    3448. 

  3448.       } else {
    3449. 

  3449. 	 SiS_Pr->CHSyncStart = SiS_Pr->SiS_VGAHDE;
    3450. 

  3450. 	 if(modeflag & HalfDCLK) {
    3451. 

  3451. 	    SiS_Pr->CHSyncStart >>= 1;
    3452. 

  3452. 	    tempax = ((SiS_Pr->CHTotal - SiS_Pr->CHSyncStart) / 3) << 1;
    3453. 

  3453. 	    SiS_Pr->CHSyncEnd = SiS_Pr->CHSyncStart + tempax;
    3454. 

  3454. 	 } else {
    3455. 

  3455. 	    SiS_Pr->CHSyncEnd = (SiS_Pr->CHSyncStart + (SiS_Pr->CHTotal / 10) + 7) & ~7;
    3456. 

  3456. 	    SiS_Pr->CHSyncStart += 8;
    3457. 

  3457. 	 }
    3458. 

  3458.       }
    3459. 

  3459. #endif
    3460. 

  3460.    } else {
    3461. 

  3461. #ifdef CONFIG_FB_SIS_315
    3462. 

  3462.       tempax = VGAHDE;
    3463. 

  3463.       if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3464. 

  3464. 	 tempbx = SiS_Pr->PanelXRes;
    3465. 

  3465. 	 if(modeflag & HalfDCLK) tempbx >>= 1;
    3466. 

  3466. 	 tempax += ((tempbx - tempax) >> 1);
    3467. 

  3467.       }
    3468. 

  3468.       tempax += SiS_Pr->PanelHRS;
    3469. 

  3469.       SiS_Pr->CHSyncStart = tempax;
    3470. 

  3470.       tempax += SiS_Pr->PanelHRE;
    3471. 

  3471.       SiS_Pr->CHSyncEnd = tempax;
    3472. 

  3472. #endif
    3473. 

  3473.    }
    3474. 

  3474. 

  3475.    tempbx = SiS_Pr->PanelVT - SiS_Pr->PanelYRes;
    3476. 

  3476.    tempax = SiS_Pr->SiS_VGAVDE;
    3477. 

  3477.    if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3478. 

  3478.       tempax = SiS_Pr->PanelYRes;
    3479. 

  3479.    } else if(SiS_Pr->ChipType < SIS_315H) {
    3480. 

  3480. #ifdef CONFIG_FB_SIS_300
    3481. 

  3481.       /* Stupid hack for 640x400/320x200 */
    3482. 

  3482.       if(SiS_Pr->SiS_LCDResInfo == Panel_1024x768) {
    3483. 

  3483. 	 if((tempax + tempbx) == 438) tempbx += 16;
    3484. 

  3484.       } else if((SiS_Pr->SiS_LCDResInfo == Panel_800x600) ||
    3485. 

  3485. 		(SiS_Pr->SiS_LCDResInfo == Panel_1024x600)) {
    3486. 

  3486. 	 tempax = 0;
    3487. 

  3487. 	 tempbx = SiS_Pr->SiS_VGAVT;
    3488. 

  3488.       }
    3489. 

  3489. #endif
    3490. 

  3490.    }
    3491. 

  3491.    SiS_Pr->CVTotal = SiS_Pr->CVBlankEnd = tempbx + tempax;
    3492. 

  3492. 

  3493.    tempax = SiS_Pr->SiS_VGAVDE;
    3494. 

  3494.    if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
    3495. 

  3495.       tempax += (SiS_Pr->PanelYRes - tempax) >> 1;
    3496. 

  3496.    }
    3497. 

  3497.    tempax += SiS_Pr->PanelVRS;
    3498. 

  3498.    SiS_Pr->CVSyncStart = tempax;
    3499. 

  3499.    tempax += SiS_Pr->PanelVRE;
    3500. 

  3500.    SiS_Pr->CVSyncEnd = tempax;
    3501. 

  3501.    if(SiS_Pr->ChipType < SIS_315H) {
    3502. 

  3502.       SiS_Pr->CVSyncStart--;
    3503. 

  3503.       SiS_Pr->CVSyncEnd--;
    3504. 

  3504.    }
    3505. 

  3505. 

  3506.    SiS_CalcCRRegisters(SiS_Pr, 8);
    3507. 

  3507.    SiS_Pr->CCRT1CRTC[15] &= ~0xF8;
    3508. 

  3508.    SiS_Pr->CCRT1CRTC[15] |= (remaining << 4);
    3509. 

  3509.    SiS_Pr->CCRT1CRTC[16] &= ~0xE0;
    3510. 

  3510. 

  3511.    SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
    3512. 

  3512. 

  3513.    for(i = 0, j = 0; i <= 7; i++, j++) {
    3514. 

  3514.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
    3515. 

  3515.    }
    3516. 

  3516.    for(j = 0x10; i <= 10; i++, j++) {
    3517. 

  3517.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
    3518. 

  3518.    }
    3519. 

  3519.    for(j = 0x15; i <= 12; i++, j++) {
    3520. 

  3520.       SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
    3521. 

  3521.    }
    3522. 

  3522.    for(j = 0x0A; i <= 15; i++, j++) {
    3523. 

  3523.       SiS_SetReg(SiS_Pr->SiS_P3c4,j,SiS_Pr->CCRT1CRTC[i]);
    3524. 

  3524.    }
    3525. 

  3525. 

  3526.    tempax = SiS_Pr->CCRT1CRTC[16] & 0xE0;
    3527. 

  3527.    SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0E,0x1F,tempax);
    3528. 

  3528. 

  3529.    tempax = (SiS_Pr->CCRT1CRTC[16] & 0x01) << 5;
    3530. 

  3530.    if(modeflag & DoubleScanMode) tempax |= 0x80;
    3531. 

  3531.    SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x09,0x5F,tempax);
    3532. 

  3532. 

  3533. }
    3534. 

  3534. 

  3535. void
    3536. 

  3536. SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
    3537. 

  3537. 			int xres, int yres,
    3538. 

  3538. 			struct fb_var_screeninfo *var, bool writeres
    3539. 

  3539. )
    3540. 

  3540. {
    3541. 

  3541.    unsigned short HRE, HBE, HRS, HBS, HDE, HT;
    3542. 

  3542.    unsigned short VRE, VBE, VRS, VBS, VDE, VT;
    3543. 

  3543.    unsigned char  sr_data, cr_data, cr_data2;
    3544. 

  3544.    int            A, B, C, D, E, F, temp;
    3545. 

  3545. 

  3546.    sr_data = crdata[14];
    3547. 

  3547. 

  3548.    /* Horizontal total */
    3549. 

  3549.    HT =  crdata[0] | ((unsigned short)(sr_data & 0x03) << 8);
    3550. 

  3550.    A = HT + 5;
    3551. 

  3551. 

  3552.    /* Horizontal display enable end */
    3553. 

  3553.    HDE = crdata[1] | ((unsigned short)(sr_data & 0x0C) << 6);
    3554. 

  3554.    E = HDE + 1;
    3555. 

  3555. 

  3556.    /* Horizontal retrace (=sync) start */
    3557. 

  3557.    HRS = crdata[4] | ((unsigned short)(sr_data & 0xC0) << 2);
    3558. 

  3558.    F = HRS - E - 3;
    3559. 

  3559. 

  3560.    /* Horizontal blank start */
    3561. 

  3561.    HBS = crdata[2] | ((unsigned short)(sr_data & 0x30) << 4);
    3562. 

  3562. 

  3563.    sr_data = crdata[15];
    3564. 

  3564.    cr_data = crdata[5];
    3565. 

  3565. 

  3566.    /* Horizontal blank end */
    3567. 

  3567.    HBE = (crdata[3] & 0x1f) |
    3568. 

  3568.          ((unsigned short)(cr_data & 0x80) >> 2) |
    3569. 

  3569.          ((unsigned short)(sr_data & 0x03) << 6);
    3570. 

  3570. 

  3571.    /* Horizontal retrace (=sync) end */
    3572. 

  3572.    HRE = (cr_data & 0x1f) | ((sr_data & 0x04) << 3);
    3573. 

  3573. 

  3574.    temp = HBE - ((E - 1) & 255);
    3575. 

  3575.    B = (temp > 0) ? temp : (temp + 256);
    3576. 

  3576. 

  3577.    temp = HRE - ((E + F + 3) & 63);
    3578. 

  3578.    C = (temp > 0) ? temp : (temp + 64);
    3579. 

  3579. 

  3580.    D = B - F - C;
    3581. 

  3581. 

  3582.    if(writeres) var->xres = xres = E * 8;
    3583. 

  3583.    var->left_margin = D * 8;
    3584. 

  3584.    var->right_margin = F * 8;
    3585. 

  3585.    var->hsync_len = C * 8;
    3586. 

  3586. 

  3587.    /* Vertical */
    3588. 

  3588.    sr_data = crdata[13];
    3589. 

  3589.    cr_data = crdata[7];
    3590. 

  3590. 

  3591.    /* Vertical total */
    3592. 

  3592.    VT  = crdata[6] |
    3593. 

  3593. 	 ((unsigned short)(cr_data & 0x01) << 8) |
    3594. 

  3594. 	 ((unsigned short)(cr_data & 0x20) << 4) |
    3595. 

  3595. 	 ((unsigned short)(sr_data & 0x01) << 10);
    3596. 

  3596.    A = VT + 2;
    3597. 

  3597. 

  3598.    /* Vertical display enable end */
    3599. 

  3599.    VDE = crdata[10] |
    3600. 

  3600. 	 ((unsigned short)(cr_data & 0x02) << 7) |
    3601. 

  3601. 	 ((unsigned short)(cr_data & 0x40) << 3) |
    3602. 

  3602. 	 ((unsigned short)(sr_data & 0x02) << 9);
    3603. 

  3603.    E = VDE + 1;
    3604. 

  3604. 

  3605.    /* Vertical retrace (=sync) start */
    3606. 

  3606.    VRS = crdata[8] |
    3607. 

  3607. 	 ((unsigned short)(cr_data & 0x04) << 6) |
    3608. 

  3608. 	 ((unsigned short)(cr_data & 0x80) << 2) |
    3609. 

  3609. 	 ((unsigned short)(sr_data & 0x08) << 7);
    3610. 

  3610.    F = VRS + 1 - E;
    3611. 

  3611. 

  3612.    cr_data2 = (crdata[16] & 0x01) << 5;
    3613. 

  3613. 

  3614.    /* Vertical blank start */
    3615. 

  3615.    VBS = crdata[11] |
    3616. 

  3616. 	 ((unsigned short)(cr_data  & 0x08) << 5) |
    3617. 

  3617. 	 ((unsigned short)(cr_data2 & 0x20) << 4) |
    3618. 

  3618. 	 ((unsigned short)(sr_data  & 0x04) << 8);
    3619. 

  3619. 

  3620.    /* Vertical blank end */
    3621. 

  3621.    VBE = crdata[12] | ((unsigned short)(sr_data & 0x10) << 4);
    3622. 

  3622.    temp = VBE - ((E - 1) & 511);
    3623. 

  3623.    B = (temp > 0) ? temp : (temp + 512);
    3624. 

  3624. 

  3625.    /* Vertical retrace (=sync) end */
    3626. 

  3626.    VRE = (crdata[9] & 0x0f) | ((sr_data & 0x20) >> 1);
    3627. 

  3627.    temp = VRE - ((E + F - 1) & 31);
    3628. 

  3628.    C = (temp > 0) ? temp : (temp + 32);
    3629. 

  3629. 

  3630.    D = B - F - C;
    3631. 

  3631. 

  3632.    if(writeres) var->yres = yres = E;
    3633. 

  3633.    var->upper_margin = D;
    3634. 

  3634.    var->lower_margin = F;
    3635. 

  3635.    var->vsync_len = C;
    3636. 

  3636. 

  3637.    if((xres == 320) && ((yres == 200) || (yres == 240))) {
    3638. 

  3638. 	/* Terrible hack, but correct CRTC data for
    3639. 

  3639. 	 * these modes only produces a black screen...
    3640. 

  3640. 	 * (HRE is 0, leading into a too large C and
    3641. 

  3641. 	 * a negative D. The CRT controller does not
    3642. 

  3642. 	 * seem to like correcting HRE to 50)
    3643. 

  3643. 	 */
    3644. 

  3644.       var->left_margin = (400 - 376);
    3645. 

  3645.       var->right_margin = (328 - 320);
    3646. 

  3646.       var->hsync_len = (376 - 328);
    3647. 

  3647. 

  3648.    }
    3649. 

  3649. 

  3650. }
    3651. 

  3651. 

  3652. 

  3653. 

  3654. 

  3655.