drivers/video/via/hw.c

   1 /*
   2  * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
   4
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public
   7  * License as published by the Free Software Foundation;
   8  * either version 2, or (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
  12  * the implied warranty of MERCHANTABILITY or FITNESS FOR
  13  * A PARTICULAR PURPOSE.See the GNU General Public License
  14  * for more details.
  15
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <linux/via-core.h>
  23 #include "global.h"
  24
  25 static struct pll_config cle266_pll_config[] = {
  26         {19, 4, 0},
  27         {26, 5, 0},
  28         {28, 5, 0},
  29         {31, 5, 0},
  30         {33, 5, 0},
  31         {55, 5, 0},
  32         {102, 5, 0},
  33         {53, 6, 0},
  34         {92, 6, 0},
  35         {98, 6, 0},
  36         {112, 6, 0},
  37         {41, 7, 0},
  38         {60, 7, 0},
  39         {99, 7, 0},
  40         {100, 7, 0},
  41         {83, 8, 0},
  42         {86, 8, 0},
  43         {108, 8, 0},
  44         {87, 9, 0},
  45         {118, 9, 0},
  46         {95, 12, 0},
  47         {115, 12, 0},
  48         {108, 13, 0},
  49         {83, 17, 0},
  50         {67, 20, 0},
  51         {86, 20, 0},
  52         {98, 20, 0},
  53         {121, 24, 0},
  54         {99, 29, 0},
  55         {33, 3, 1},
  56         {15, 4, 1},
  57         {23, 4, 1},
  58         {37, 5, 1},
  59         {83, 5, 1},
  60         {85, 5, 1},
  61         {94, 5, 1},
  62         {103, 5, 1},
  63         {109, 5, 1},
  64         {113, 5, 1},
  65         {121, 5, 1},
  66         {82, 6, 1},
  67         {31, 7, 1},
  68         {55, 7, 1},
  69         {84, 7, 1},
  70         {83, 8, 1},
  71         {76, 9, 1},
  72         {127, 9, 1},
  73         {33, 4, 2},
  74         {75, 4, 2},
  75         {119, 4, 2},
  76         {121, 4, 2},
  77         {91, 5, 2},
  78         {118, 5, 2},
  79         {83, 6, 2},
  80         {109, 6, 2},
  81         {90, 7, 2},
  82         {93, 2, 3},
  83         {53, 3, 3},
  84         {73, 4, 3},
  85         {89, 4, 3},
  86         {105, 4, 3},
  87         {117, 4, 3},
  88         {101, 5, 3},
  89         {121, 5, 3},
  90         {127, 5, 3},
  91         {99, 7, 3}
  92 };
  93
  94 static struct pll_config k800_pll_config[] = {
  95         {22, 2, 0},
  96         {28, 3, 0},
  97         {81, 3, 1},
  98         {85, 3, 1},
  99         {98, 3, 1},
 100         {112, 3, 1},
 101         {86, 4, 1},
 102         {166, 4, 1},
 103         {109, 5, 1},
 104         {113, 5, 1},
 105         {121, 5, 1},
 106         {131, 5, 1},
 107         {143, 5, 1},
 108         {153, 5, 1},
 109         {66, 3, 2},
 110         {68, 3, 2},
 111         {95, 3, 2},
 112         {106, 3, 2},
 113         {116, 3, 2},
 114         {93, 4, 2},
 115         {119, 4, 2},
 116         {121, 4, 2},
 117         {133, 4, 2},
 118         {137, 4, 2},
 119         {117, 5, 2},
 120         {118, 5, 2},
 121         {120, 5, 2},
 122         {124, 5, 2},
 123         {132, 5, 2},
 124         {137, 5, 2},
 125         {141, 5, 2},
 126         {166, 5, 2},
 127         {170, 5, 2},
 128         {191, 5, 2},
 129         {206, 5, 2},
 130         {208, 5, 2},
 131         {30, 2, 3},
 132         {69, 3, 3},
 133         {82, 3, 3},
 134         {83, 3, 3},
 135         {109, 3, 3},
 136         {114, 3, 3},
 137         {125, 3, 3},
 138         {89, 4, 3},
 139         {103, 4, 3},
 140         {117, 4, 3},
 141         {126, 4, 3},
 142         {150, 4, 3},
 143         {161, 4, 3},
 144         {121, 5, 3},
 145         {127, 5, 3},
 146         {131, 5, 3},
 147         {134, 5, 3},
 148         {148, 5, 3},
 149         {169, 5, 3},
 150         {172, 5, 3},
 151         {182, 5, 3},
 152         {195, 5, 3},
 153         {196, 5, 3},
 154         {208, 5, 3},
 155         {66, 2, 4},
 156         {85, 3, 4},
 157         {141, 4, 4},
 158         {146, 4, 4},
 159         {161, 4, 4},
 160         {177, 5, 4}
 161 };
 162
 163 static struct pll_config cx700_pll_config[] = {
 164         {98, 3, 1},
 165         {86, 4, 1},
 166         {109, 5, 1},
 167         {110, 5, 1},
 168         {113, 5, 1},
 169         {121, 5, 1},
 170         {131, 5, 1},
 171         {135, 5, 1},
 172         {142, 5, 1},
 173         {143, 5, 1},
 174         {153, 5, 1},
 175         {187, 5, 1},
 176         {208, 5, 1},
 177         {68, 2, 2},
 178         {95, 3, 2},
 179         {116, 3, 2},
 180         {93, 4, 2},
 181         {119, 4, 2},
 182         {133, 4, 2},
 183         {137, 4, 2},
 184         {151, 4, 2},
 185         {166, 4, 2},
 186         {110, 5, 2},
 187         {112, 5, 2},
 188         {117, 5, 2},
 189         {118, 5, 2},
 190         {120, 5, 2},
 191         {132, 5, 2},
 192         {137, 5, 2},
 193         {141, 5, 2},
 194         {151, 5, 2},
 195         {166, 5, 2},
 196         {175, 5, 2},
 197         {191, 5, 2},
 198         {206, 5, 2},
 199         {174, 7, 2},
 200         {82, 3, 3},
 201         {109, 3, 3},
 202         {117, 4, 3},
 203         {150, 4, 3},
 204         {161, 4, 3},
 205         {112, 5, 3},
 206         {115, 5, 3},
 207         {121, 5, 3},
 208         {127, 5, 3},
 209         {129, 5, 3},
 210         {131, 5, 3},
 211         {134, 5, 3},
 212         {138, 5, 3},
 213         {148, 5, 3},
 214         {157, 5, 3},
 215         {169, 5, 3},
 216         {172, 5, 3},
 217         {190, 5, 3},
 218         {195, 5, 3},
 219         {196, 5, 3},
 220         {208, 5, 3},
 221         {141, 5, 4},
 222         {150, 5, 4},
 223         {166, 5, 4},
 224         {176, 5, 4},
 225         {177, 5, 4},
 226         {183, 5, 4},
 227         {202, 5, 4}
 228 };
 229
 230 static struct pll_config vx855_pll_config[] = {
 231         {86, 4, 1},
 232         {108, 5, 1},
 233         {110, 5, 1},
 234         {113, 5, 1},
 235         {121, 5, 1},
 236         {131, 5, 1},
 237         {135, 5, 1},
 238         {142, 5, 1},
 239         {143, 5, 1},
 240         {153, 5, 1},
 241         {164, 5, 1},
 242         {187, 5, 1},
 243         {208, 5, 1},
 244         {110, 5, 2},
 245         {112, 5, 2},
 246         {117, 5, 2},
 247         {118, 5, 2},
 248         {124, 5, 2},
 249         {132, 5, 2},
 250         {137, 5, 2},
 251         {141, 5, 2},
 252         {149, 5, 2},
 253         {151, 5, 2},
 254         {159, 5, 2},
 255         {166, 5, 2},
 256         {167, 5, 2},
 257         {172, 5, 2},
 258         {189, 5, 2},
 259         {191, 5, 2},
 260         {194, 5, 2},
 261         {206, 5, 2},
 262         {208, 5, 2},
 263         {83, 3, 3},
 264         {88, 3, 3},
 265         {109, 3, 3},
 266         {112, 3, 3},
 267         {103, 4, 3},
 268         {105, 4, 3},
 269         {161, 4, 3},
 270         {112, 5, 3},
 271         {115, 5, 3},
 272         {121, 5, 3},
 273         {127, 5, 3},
 274         {134, 5, 3},
 275         {137, 5, 3},
 276         {148, 5, 3},
 277         {157, 5, 3},
 278         {169, 5, 3},
 279         {172, 5, 3},
 280         {182, 5, 3},
 281         {191, 5, 3},
 282         {195, 5, 3},
 283         {209, 5, 3},
 284         {142, 4, 4},
 285         {146, 4, 4},
 286         {161, 4, 4},
 287         {141, 5, 4},
 288         {150, 5, 4},
 289         {165, 5, 4},
 290         {176, 5, 4}
 291 };
 292
 293 /* according to VIA Technologies these values are based on experiment */
 294 static struct io_reg scaling_parameters[] = {
 295         {VIACR, CR7A, 0xFF, 0x01},      /* LCD Scaling Parameter 1 */
 296         {VIACR, CR7B, 0xFF, 0x02},      /* LCD Scaling Parameter 2 */
 297         {VIACR, CR7C, 0xFF, 0x03},      /* LCD Scaling Parameter 3 */
 298         {VIACR, CR7D, 0xFF, 0x04},      /* LCD Scaling Parameter 4 */
 299         {VIACR, CR7E, 0xFF, 0x07},      /* LCD Scaling Parameter 5 */
 300         {VIACR, CR7F, 0xFF, 0x0A},      /* LCD Scaling Parameter 6 */
 301         {VIACR, CR80, 0xFF, 0x0D},      /* LCD Scaling Parameter 7 */
 302         {VIACR, CR81, 0xFF, 0x13},      /* LCD Scaling Parameter 8 */
 303         {VIACR, CR82, 0xFF, 0x16},      /* LCD Scaling Parameter 9 */
 304         {VIACR, CR83, 0xFF, 0x19},      /* LCD Scaling Parameter 10 */
 305         {VIACR, CR84, 0xFF, 0x1C},      /* LCD Scaling Parameter 11 */
 306         {VIACR, CR85, 0xFF, 0x1D},      /* LCD Scaling Parameter 12 */
 307         {VIACR, CR86, 0xFF, 0x1E},      /* LCD Scaling Parameter 13 */
 308         {VIACR, CR87, 0xFF, 0x1F},      /* LCD Scaling Parameter 14 */
 309 };
 310
 311 static struct fifo_depth_select display_fifo_depth_reg = {
 312         /* IGA1 FIFO Depth_Select */
 313         {IGA1_FIFO_DEPTH_SELECT_REG_NUM, {{SR17, 0, 7} } },
 314         /* IGA2 FIFO Depth_Select */
 315         {IGA2_FIFO_DEPTH_SELECT_REG_NUM,
 316          {{CR68, 4, 7}, {CR94, 7, 7}, {CR95, 7, 7} } }
 317 };
 318
 319 static struct fifo_threshold_select fifo_threshold_select_reg = {
 320         /* IGA1 FIFO Threshold Select */
 321         {IGA1_FIFO_THRESHOLD_REG_NUM, {{SR16, 0, 5}, {SR16, 7, 7} } },
 322         /* IGA2 FIFO Threshold Select */
 323         {IGA2_FIFO_THRESHOLD_REG_NUM, {{CR68, 0, 3}, {CR95, 4, 6} } }
 324 };
 325
 326 static struct fifo_high_threshold_select fifo_high_threshold_select_reg = {
 327         /* IGA1 FIFO High Threshold Select */
 328         {IGA1_FIFO_HIGH_THRESHOLD_REG_NUM, {{SR18, 0, 5}, {SR18, 7, 7} } },
 329         /* IGA2 FIFO High Threshold Select */
 330         {IGA2_FIFO_HIGH_THRESHOLD_REG_NUM, {{CR92, 0, 3}, {CR95, 0, 2} } }
 331 };
 332
 333 static struct display_queue_expire_num display_queue_expire_num_reg = {
 334         /* IGA1 Display Queue Expire Num */
 335         {IGA1_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{SR22, 0, 4} } },
 336         /* IGA2 Display Queue Expire Num */
 337         {IGA2_DISPLAY_QUEUE_EXPIRE_NUM_REG_NUM, {{CR94, 0, 6} } }
 338 };
 339
 340 /* Definition Fetch Count Registers*/
 341 static struct fetch_count fetch_count_reg = {
 342         /* IGA1 Fetch Count Register */
 343         {IGA1_FETCH_COUNT_REG_NUM, {{SR1C, 0, 7}, {SR1D, 0, 1} } },
 344         /* IGA2 Fetch Count Register */
 345         {IGA2_FETCH_COUNT_REG_NUM, {{CR65, 0, 7}, {CR67, 2, 3} } }
 346 };
 347
 348 static struct iga1_crtc_timing iga1_crtc_reg = {
 349         /* IGA1 Horizontal Total */
 350         {IGA1_HOR_TOTAL_REG_NUM, {{CR00, 0, 7}, {CR36, 3, 3} } },
 351         /* IGA1 Horizontal Addressable Video */
 352         {IGA1_HOR_ADDR_REG_NUM, {{CR01, 0, 7} } },
 353         /* IGA1 Horizontal Blank Start */
 354         {IGA1_HOR_BLANK_START_REG_NUM, {{CR02, 0, 7} } },
 355         /* IGA1 Horizontal Blank End */
 356         {IGA1_HOR_BLANK_END_REG_NUM,
 357          {{CR03, 0, 4}, {CR05, 7, 7}, {CR33, 5, 5} } },
 358         /* IGA1 Horizontal Sync Start */
 359         {IGA1_HOR_SYNC_START_REG_NUM, {{CR04, 0, 7}, {CR33, 4, 4} } },
 360         /* IGA1 Horizontal Sync End */
 361         {IGA1_HOR_SYNC_END_REG_NUM, {{CR05, 0, 4} } },
 362         /* IGA1 Vertical Total */
 363         {IGA1_VER_TOTAL_REG_NUM,
 364          {{CR06, 0, 7}, {CR07, 0, 0}, {CR07, 5, 5}, {CR35, 0, 0} } },
 365         /* IGA1 Vertical Addressable Video */
 366         {IGA1_VER_ADDR_REG_NUM,
 367          {{CR12, 0, 7}, {CR07, 1, 1}, {CR07, 6, 6}, {CR35, 2, 2} } },
 368         /* IGA1 Vertical Blank Start */
 369         {IGA1_VER_BLANK_START_REG_NUM,
 370          {{CR15, 0, 7}, {CR07, 3, 3}, {CR09, 5, 5}, {CR35, 3, 3} } },
 371         /* IGA1 Vertical Blank End */
 372         {IGA1_VER_BLANK_END_REG_NUM, {{CR16, 0, 7} } },
 373         /* IGA1 Vertical Sync Start */
 374         {IGA1_VER_SYNC_START_REG_NUM,
 375          {{CR10, 0, 7}, {CR07, 2, 2}, {CR07, 7, 7}, {CR35, 1, 1} } },
 376         /* IGA1 Vertical Sync End */
 377         {IGA1_VER_SYNC_END_REG_NUM, {{CR11, 0, 3} } }
 378 };
 379
 380 static struct iga2_crtc_timing iga2_crtc_reg = {
 381         /* IGA2 Horizontal Total */
 382         {IGA2_HOR_TOTAL_REG_NUM, {{CR50, 0, 7}, {CR55, 0, 3} } },
 383         /* IGA2 Horizontal Addressable Video */
 384         {IGA2_HOR_ADDR_REG_NUM, {{CR51, 0, 7}, {CR55, 4, 6} } },
 385         /* IGA2 Horizontal Blank Start */
 386         {IGA2_HOR_BLANK_START_REG_NUM, {{CR52, 0, 7}, {CR54, 0, 2} } },
 387         /* IGA2 Horizontal Blank End */
 388         {IGA2_HOR_BLANK_END_REG_NUM,
 389          {{CR53, 0, 7}, {CR54, 3, 5}, {CR5D, 6, 6} } },
 390         /* IGA2 Horizontal Sync Start */
 391         {IGA2_HOR_SYNC_START_REG_NUM,
 392          {{CR56, 0, 7}, {CR54, 6, 7}, {CR5C, 7, 7}, {CR5D, 7, 7} } },
 393         /* IGA2 Horizontal Sync End */
 394         {IGA2_HOR_SYNC_END_REG_NUM, {{CR57, 0, 7}, {CR5C, 6, 6} } },
 395         /* IGA2 Vertical Total */
 396         {IGA2_VER_TOTAL_REG_NUM, {{CR58, 0, 7}, {CR5D, 0, 2} } },
 397         /* IGA2 Vertical Addressable Video */
 398         {IGA2_VER_ADDR_REG_NUM, {{CR59, 0, 7}, {CR5D, 3, 5} } },
 399         /* IGA2 Vertical Blank Start */
 400         {IGA2_VER_BLANK_START_REG_NUM, {{CR5A, 0, 7}, {CR5C, 0, 2} } },
 401         /* IGA2 Vertical Blank End */
 402         {IGA2_VER_BLANK_END_REG_NUM, {{CR5B, 0, 7}, {CR5C, 3, 5} } },
 403         /* IGA2 Vertical Sync Start */
 404         {IGA2_VER_SYNC_START_REG_NUM, {{CR5E, 0, 7}, {CR5F, 5, 7} } },
 405         /* IGA2 Vertical Sync End */
 406         {IGA2_VER_SYNC_END_REG_NUM, {{CR5F, 0, 4} } }
 407 };
 408
 409 static struct rgbLUT palLUT_table[] = {
 410         /* {R,G,B} */
 411         /* Index 0x00~0x03 */
 412         {0x00, 0x00, 0x00}, {0x00, 0x00, 0x2A}, {0x00, 0x2A, 0x00}, {0x00,
 413                                                                      0x2A,
 414                                                                      0x2A},
 415         /* Index 0x04~0x07 */
 416         {0x2A, 0x00, 0x00}, {0x2A, 0x00, 0x2A}, {0x2A, 0x15, 0x00}, {0x2A,
 417                                                                      0x2A,
 418                                                                      0x2A},
 419         /* Index 0x08~0x0B */
 420         {0x15, 0x15, 0x15}, {0x15, 0x15, 0x3F}, {0x15, 0x3F, 0x15}, {0x15,
 421                                                                      0x3F,
 422                                                                      0x3F},
 423         /* Index 0x0C~0x0F */
 424         {0x3F, 0x15, 0x15}, {0x3F, 0x15, 0x3F}, {0x3F, 0x3F, 0x15}, {0x3F,
 425                                                                      0x3F,
 426                                                                      0x3F},
 427         /* Index 0x10~0x13 */
 428         {0x00, 0x00, 0x00}, {0x05, 0x05, 0x05}, {0x08, 0x08, 0x08}, {0x0B,
 429                                                                      0x0B,
 430                                                                      0x0B},
 431         /* Index 0x14~0x17 */
 432         {0x0E, 0x0E, 0x0E}, {0x11, 0x11, 0x11}, {0x14, 0x14, 0x14}, {0x18,
 433                                                                      0x18,
 434                                                                      0x18},
 435         /* Index 0x18~0x1B */
 436         {0x1C, 0x1C, 0x1C}, {0x20, 0x20, 0x20}, {0x24, 0x24, 0x24}, {0x28,
 437                                                                      0x28,
 438                                                                      0x28},
 439         /* Index 0x1C~0x1F */
 440         {0x2D, 0x2D, 0x2D}, {0x32, 0x32, 0x32}, {0x38, 0x38, 0x38}, {0x3F,
 441                                                                      0x3F,
 442                                                                      0x3F},
 443         /* Index 0x20~0x23 */
 444         {0x00, 0x00, 0x3F}, {0x10, 0x00, 0x3F}, {0x1F, 0x00, 0x3F}, {0x2F,
 445                                                                      0x00,
 446                                                                      0x3F},
 447         /* Index 0x24~0x27 */
 448         {0x3F, 0x00, 0x3F}, {0x3F, 0x00, 0x2F}, {0x3F, 0x00, 0x1F}, {0x3F,
 449                                                                      0x00,
 450                                                                      0x10},
 451         /* Index 0x28~0x2B */
 452         {0x3F, 0x00, 0x00}, {0x3F, 0x10, 0x00}, {0x3F, 0x1F, 0x00}, {0x3F,
 453                                                                      0x2F,
 454                                                                      0x00},
 455         /* Index 0x2C~0x2F */
 456         {0x3F, 0x3F, 0x00}, {0x2F, 0x3F, 0x00}, {0x1F, 0x3F, 0x00}, {0x10,
 457                                                                      0x3F,
 458                                                                      0x00},
 459         /* Index 0x30~0x33 */
 460         {0x00, 0x3F, 0x00}, {0x00, 0x3F, 0x10}, {0x00, 0x3F, 0x1F}, {0x00,
 461                                                                      0x3F,
 462                                                                      0x2F},
 463         /* Index 0x34~0x37 */
 464         {0x00, 0x3F, 0x3F}, {0x00, 0x2F, 0x3F}, {0x00, 0x1F, 0x3F}, {0x00,
 465                                                                      0x10,
 466                                                                      0x3F},
 467         /* Index 0x38~0x3B */
 468         {0x1F, 0x1F, 0x3F}, {0x27, 0x1F, 0x3F}, {0x2F, 0x1F, 0x3F}, {0x37,
 469                                                                      0x1F,
 470                                                                      0x3F},
 471         /* Index 0x3C~0x3F */
 472         {0x3F, 0x1F, 0x3F}, {0x3F, 0x1F, 0x37}, {0x3F, 0x1F, 0x2F}, {0x3F,
 473                                                                      0x1F,
 474                                                                      0x27},
 475         /* Index 0x40~0x43 */
 476         {0x3F, 0x1F, 0x1F}, {0x3F, 0x27, 0x1F}, {0x3F, 0x2F, 0x1F}, {0x3F,
 477                                                                      0x3F,
 478                                                                      0x1F},
 479         /* Index 0x44~0x47 */
 480         {0x3F, 0x3F, 0x1F}, {0x37, 0x3F, 0x1F}, {0x2F, 0x3F, 0x1F}, {0x27,
 481                                                                      0x3F,
 482                                                                      0x1F},
 483         /* Index 0x48~0x4B */
 484         {0x1F, 0x3F, 0x1F}, {0x1F, 0x3F, 0x27}, {0x1F, 0x3F, 0x2F}, {0x1F,
 485                                                                      0x3F,
 486                                                                      0x37},
 487         /* Index 0x4C~0x4F */
 488         {0x1F, 0x3F, 0x3F}, {0x1F, 0x37, 0x3F}, {0x1F, 0x2F, 0x3F}, {0x1F,
 489                                                                      0x27,
 490                                                                      0x3F},
 491         /* Index 0x50~0x53 */
 492         {0x2D, 0x2D, 0x3F}, {0x31, 0x2D, 0x3F}, {0x36, 0x2D, 0x3F}, {0x3A,
 493                                                                      0x2D,
 494                                                                      0x3F},
 495         /* Index 0x54~0x57 */
 496         {0x3F, 0x2D, 0x3F}, {0x3F, 0x2D, 0x3A}, {0x3F, 0x2D, 0x36}, {0x3F,
 497                                                                      0x2D,
 498                                                                      0x31},
 499         /* Index 0x58~0x5B */
 500         {0x3F, 0x2D, 0x2D}, {0x3F, 0x31, 0x2D}, {0x3F, 0x36, 0x2D}, {0x3F,
 501                                                                      0x3A,
 502                                                                      0x2D},
 503         /* Index 0x5C~0x5F */
 504         {0x3F, 0x3F, 0x2D}, {0x3A, 0x3F, 0x2D}, {0x36, 0x3F, 0x2D}, {0x31,
 505                                                                      0x3F,
 506                                                                      0x2D},
 507         /* Index 0x60~0x63 */
 508         {0x2D, 0x3F, 0x2D}, {0x2D, 0x3F, 0x31}, {0x2D, 0x3F, 0x36}, {0x2D,
 509                                                                      0x3F,
 510                                                                      0x3A},
 511         /* Index 0x64~0x67 */
 512         {0x2D, 0x3F, 0x3F}, {0x2D, 0x3A, 0x3F}, {0x2D, 0x36, 0x3F}, {0x2D,
 513                                                                      0x31,
 514                                                                      0x3F},
 515         /* Index 0x68~0x6B */
 516         {0x00, 0x00, 0x1C}, {0x07, 0x00, 0x1C}, {0x0E, 0x00, 0x1C}, {0x15,
 517                                                                      0x00,
 518                                                                      0x1C},
 519         /* Index 0x6C~0x6F */
 520         {0x1C, 0x00, 0x1C}, {0x1C, 0x00, 0x15}, {0x1C, 0x00, 0x0E}, {0x1C,
 521                                                                      0x00,
 522                                                                      0x07},
 523         /* Index 0x70~0x73 */
 524         {0x1C, 0x00, 0x00}, {0x1C, 0x07, 0x00}, {0x1C, 0x0E, 0x00}, {0x1C,
 525                                                                      0x15,
 526                                                                      0x00},
 527         /* Index 0x74~0x77 */
 528         {0x1C, 0x1C, 0x00}, {0x15, 0x1C, 0x00}, {0x0E, 0x1C, 0x00}, {0x07,
 529                                                                      0x1C,
 530                                                                      0x00},
 531         /* Index 0x78~0x7B */
 532         {0x00, 0x1C, 0x00}, {0x00, 0x1C, 0x07}, {0x00, 0x1C, 0x0E}, {0x00,
 533                                                                      0x1C,
 534                                                                      0x15},
 535         /* Index 0x7C~0x7F */
 536         {0x00, 0x1C, 0x1C}, {0x00, 0x15, 0x1C}, {0x00, 0x0E, 0x1C}, {0x00,
 537                                                                      0x07,
 538                                                                      0x1C},
 539         /* Index 0x80~0x83 */
 540         {0x0E, 0x0E, 0x1C}, {0x11, 0x0E, 0x1C}, {0x15, 0x0E, 0x1C}, {0x18,
 541                                                                      0x0E,
 542                                                                      0x1C},
 543         /* Index 0x84~0x87 */
 544         {0x1C, 0x0E, 0x1C}, {0x1C, 0x0E, 0x18}, {0x1C, 0x0E, 0x15}, {0x1C,
 545                                                                      0x0E,
 546                                                                      0x11},
 547         /* Index 0x88~0x8B */
 548         {0x1C, 0x0E, 0x0E}, {0x1C, 0x11, 0x0E}, {0x1C, 0x15, 0x0E}, {0x1C,
 549                                                                      0x18,
 550                                                                      0x0E},
 551         /* Index 0x8C~0x8F */
 552         {0x1C, 0x1C, 0x0E}, {0x18, 0x1C, 0x0E}, {0x15, 0x1C, 0x0E}, {0x11,
 553                                                                      0x1C,
 554                                                                      0x0E},
 555         /* Index 0x90~0x93 */
 556         {0x0E, 0x1C, 0x0E}, {0x0E, 0x1C, 0x11}, {0x0E, 0x1C, 0x15}, {0x0E,
 557                                                                      0x1C,
 558                                                                      0x18},
 559         /* Index 0x94~0x97 */
 560         {0x0E, 0x1C, 0x1C}, {0x0E, 0x18, 0x1C}, {0x0E, 0x15, 0x1C}, {0x0E,
 561                                                                      0x11,
 562                                                                      0x1C},
 563         /* Index 0x98~0x9B */
 564         {0x14, 0x14, 0x1C}, {0x16, 0x14, 0x1C}, {0x18, 0x14, 0x1C}, {0x1A,
 565                                                                      0x14,
 566                                                                      0x1C},
 567         /* Index 0x9C~0x9F */
 568         {0x1C, 0x14, 0x1C}, {0x1C, 0x14, 0x1A}, {0x1C, 0x14, 0x18}, {0x1C,
 569                                                                      0x14,
 570                                                                      0x16},
 571         /* Index 0xA0~0xA3 */
 572         {0x1C, 0x14, 0x14}, {0x1C, 0x16, 0x14}, {0x1C, 0x18, 0x14}, {0x1C,
 573                                                                      0x1A,
 574                                                                      0x14},
 575         /* Index 0xA4~0xA7 */
 576         {0x1C, 0x1C, 0x14}, {0x1A, 0x1C, 0x14}, {0x18, 0x1C, 0x14}, {0x16,
 577                                                                      0x1C,
 578                                                                      0x14},
 579         /* Index 0xA8~0xAB */
 580         {0x14, 0x1C, 0x14}, {0x14, 0x1C, 0x16}, {0x14, 0x1C, 0x18}, {0x14,
 581                                                                      0x1C,
 582                                                                      0x1A},
 583         /* Index 0xAC~0xAF */
 584         {0x14, 0x1C, 0x1C}, {0x14, 0x1A, 0x1C}, {0x14, 0x18, 0x1C}, {0x14,
 585                                                                      0x16,
 586                                                                      0x1C},
 587         /* Index 0xB0~0xB3 */
 588         {0x00, 0x00, 0x10}, {0x04, 0x00, 0x10}, {0x08, 0x00, 0x10}, {0x0C,
 589                                                                      0x00,
 590                                                                      0x10},
 591         /* Index 0xB4~0xB7 */
 592         {0x10, 0x00, 0x10}, {0x10, 0x00, 0x0C}, {0x10, 0x00, 0x08}, {0x10,
 593                                                                      0x00,
 594                                                                      0x04},
 595         /* Index 0xB8~0xBB */
 596         {0x10, 0x00, 0x00}, {0x10, 0x04, 0x00}, {0x10, 0x08, 0x00}, {0x10,
 597                                                                      0x0C,
 598                                                                      0x00},
 599         /* Index 0xBC~0xBF */
 600         {0x10, 0x10, 0x00}, {0x0C, 0x10, 0x00}, {0x08, 0x10, 0x00}, {0x04,
 601                                                                      0x10,
 602                                                                      0x00},
 603         /* Index 0xC0~0xC3 */
 604         {0x00, 0x10, 0x00}, {0x00, 0x10, 0x04}, {0x00, 0x10, 0x08}, {0x00,
 605                                                                      0x10,
 606                                                                      0x0C},
 607         /* Index 0xC4~0xC7 */
 608         {0x00, 0x10, 0x10}, {0x00, 0x0C, 0x10}, {0x00, 0x08, 0x10}, {0x00,
 609                                                                      0x04,
 610                                                                      0x10},
 611         /* Index 0xC8~0xCB */
 612         {0x08, 0x08, 0x10}, {0x0A, 0x08, 0x10}, {0x0C, 0x08, 0x10}, {0x0E,
 613                                                                      0x08,
 614                                                                      0x10},
 615         /* Index 0xCC~0xCF */
 616         {0x10, 0x08, 0x10}, {0x10, 0x08, 0x0E}, {0x10, 0x08, 0x0C}, {0x10,
 617                                                                      0x08,
 618                                                                      0x0A},
 619         /* Index 0xD0~0xD3 */
 620         {0x10, 0x08, 0x08}, {0x10, 0x0A, 0x08}, {0x10, 0x0C, 0x08}, {0x10,
 621                                                                      0x0E,
 622                                                                      0x08},
 623         /* Index 0xD4~0xD7 */
 624         {0x10, 0x10, 0x08}, {0x0E, 0x10, 0x08}, {0x0C, 0x10, 0x08}, {0x0A,
 625                                                                      0x10,
 626                                                                      0x08},
 627         /* Index 0xD8~0xDB */
 628         {0x08, 0x10, 0x08}, {0x08, 0x10, 0x0A}, {0x08, 0x10, 0x0C}, {0x08,
 629                                                                      0x10,
 630                                                                      0x0E},
 631         /* Index 0xDC~0xDF */
 632         {0x08, 0x10, 0x10}, {0x08, 0x0E, 0x10}, {0x08, 0x0C, 0x10}, {0x08,
 633                                                                      0x0A,
 634                                                                      0x10},
 635         /* Index 0xE0~0xE3 */
 636         {0x0B, 0x0B, 0x10}, {0x0C, 0x0B, 0x10}, {0x0D, 0x0B, 0x10}, {0x0F,
 637                                                                      0x0B,
 638                                                                      0x10},
 639         /* Index 0xE4~0xE7 */
 640         {0x10, 0x0B, 0x10}, {0x10, 0x0B, 0x0F}, {0x10, 0x0B, 0x0D}, {0x10,
 641                                                                      0x0B,
 642                                                                      0x0C},
 643         /* Index 0xE8~0xEB */
 644         {0x10, 0x0B, 0x0B}, {0x10, 0x0C, 0x0B}, {0x10, 0x0D, 0x0B}, {0x10,
 645                                                                      0x0F,
 646                                                                      0x0B},
 647         /* Index 0xEC~0xEF */
 648         {0x10, 0x10, 0x0B}, {0x0F, 0x10, 0x0B}, {0x0D, 0x10, 0x0B}, {0x0C,
 649                                                                      0x10,
 650                                                                      0x0B},
 651         /* Index 0xF0~0xF3 */
 652         {0x0B, 0x10, 0x0B}, {0x0B, 0x10, 0x0C}, {0x0B, 0x10, 0x0D}, {0x0B,
 653                                                                      0x10,
 654                                                                      0x0F},
 655         /* Index 0xF4~0xF7 */
 656         {0x0B, 0x10, 0x10}, {0x0B, 0x0F, 0x10}, {0x0B, 0x0D, 0x10}, {0x0B,
 657                                                                      0x0C,
 658                                                                      0x10},
 659         /* Index 0xF8~0xFB */
 660         {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
 661                                                                      0x00,
 662                                                                      0x00},
 663         /* Index 0xFC~0xFF */
 664         {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00, 0x00, 0x00}, {0x00,
 665                                                                      0x00,
 666                                                                      0x00}
 667 };
 668
 669 static struct via_device_mapping device_mapping[] = {
 670         {VIA_LDVP0, "LDVP0"},
 671         {VIA_LDVP1, "LDVP1"},
 672         {VIA_DVP0, "DVP0"},
 673         {VIA_CRT, "CRT"},
 674         {VIA_DVP1, "DVP1"},
 675         {VIA_LVDS1, "LVDS1"},
 676         {VIA_LVDS2, "LVDS2"}
 677 };
 678
 679 static void load_fix_bit_crtc_reg(void);
 680 static void __devinit init_gfx_chip_info(int chip_type);
 681 static void __devinit init_tmds_chip_info(void);
 682 static void __devinit init_lvds_chip_info(void);
 683 static void device_screen_off(void);
 684 static void device_screen_on(void);
 685 static void set_display_channel(void);
 686 static void device_off(void);
 687 static void device_on(void);
 688 static void enable_second_display_channel(void);
 689 static void disable_second_display_channel(void);
 690
 691 void viafb_lock_crt(void)
 692 {
 693         viafb_write_reg_mask(CR11, VIACR, BIT7, BIT7);
 694 }
 695
 696 void viafb_unlock_crt(void)
 697 {
 698         viafb_write_reg_mask(CR11, VIACR, 0, BIT7);
 699         viafb_write_reg_mask(CR47, VIACR, 0, BIT0);
 700 }
 701
 702 static void write_dac_reg(u8 index, u8 r, u8 g, u8 b)
 703 {
 704         outb(index, LUT_INDEX_WRITE);
 705         outb(r, LUT_DATA);
 706         outb(g, LUT_DATA);
 707         outb(b, LUT_DATA);
 708 }
 709
 710 static u32 get_dvi_devices(int output_interface)
 711 {
 712         switch (output_interface) {
 713         case INTERFACE_DVP0:
 714                 return VIA_DVP0 | VIA_LDVP0;
 715
 716         case INTERFACE_DVP1:
 717                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
 718                         return VIA_LDVP1;
 719                 else
 720                         return VIA_DVP1;
 721
 722         case INTERFACE_DFP_HIGH:
 723                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
 724                         return 0;
 725                 else
 726                         return VIA_LVDS2 | VIA_DVP0;
 727
 728         case INTERFACE_DFP_LOW:
 729                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
 730                         return 0;
 731                 else
 732                         return VIA_DVP1 | VIA_LVDS1;
 733
 734         case INTERFACE_TMDS:
 735                 return VIA_LVDS1;
 736         }
 737
 738         return 0;
 739 }
 740
 741 static u32 get_lcd_devices(int output_interface)
 742 {
 743         switch (output_interface) {
 744         case INTERFACE_DVP0:
 745                 return VIA_DVP0;
 746
 747         case INTERFACE_DVP1:
 748                 return VIA_DVP1;
 749
 750         case INTERFACE_DFP_HIGH:
 751                 return VIA_LVDS2 | VIA_DVP0;
 752
 753         case INTERFACE_DFP_LOW:
 754                 return VIA_LVDS1 | VIA_DVP1;
 755
 756         case INTERFACE_DFP:
 757                 return VIA_LVDS1 | VIA_LVDS2;
 758
 759         case INTERFACE_LVDS0:
 760         case INTERFACE_LVDS0LVDS1:
 761                 return VIA_LVDS1;
 762
 763         case INTERFACE_LVDS1:
 764                 return VIA_LVDS2;
 765         }
 766
 767         return 0;
 768 }
 769
 770 /*Set IGA path for each device*/
 771 void viafb_set_iga_path(void)
 772 {
 773
 774         if (viafb_SAMM_ON == 1) {
 775                 if (viafb_CRT_ON) {
 776                         if (viafb_primary_dev == CRT_Device)
 777                                 viaparinfo->crt_setting_info->iga_path = IGA1;
 778                         else
 779                                 viaparinfo->crt_setting_info->iga_path = IGA2;
 780                 }
 781
 782                 if (viafb_DVI_ON) {
 783                         if (viafb_primary_dev == DVI_Device)
 784                                 viaparinfo->tmds_setting_info->iga_path = IGA1;
 785                         else
 786                                 viaparinfo->tmds_setting_info->iga_path = IGA2;
 787                 }
 788
 789                 if (viafb_LCD_ON) {
 790                         if (viafb_primary_dev == LCD_Device) {
 791                                 if (viafb_dual_fb &&
 792                                         (viaparinfo->chip_info->gfx_chip_name ==
 793                                         UNICHROME_CLE266)) {
 794                                         viaparinfo->
 795                                         lvds_setting_info->iga_path = IGA2;
 796                                         viaparinfo->
 797                                         crt_setting_info->iga_path = IGA1;
 798                                         viaparinfo->
 799                                         tmds_setting_info->iga_path = IGA1;
 800                                 } else
 801                                         viaparinfo->
 802                                         lvds_setting_info->iga_path = IGA1;
 803                         } else {
 804                                 viaparinfo->lvds_setting_info->iga_path = IGA2;
 805                         }
 806                 }
 807                 if (viafb_LCD2_ON) {
 808                         if (LCD2_Device == viafb_primary_dev)
 809                                 viaparinfo->lvds_setting_info2->iga_path = IGA1;
 810                         else
 811                                 viaparinfo->lvds_setting_info2->iga_path = IGA2;
 812                 }
 813         } else {
 814                 viafb_SAMM_ON = 0;
 815
 816                 if (viafb_CRT_ON && viafb_LCD_ON) {
 817                         viaparinfo->crt_setting_info->iga_path = IGA1;
 818                         viaparinfo->lvds_setting_info->iga_path = IGA2;
 819                 } else if (viafb_CRT_ON && viafb_DVI_ON) {
 820                         viaparinfo->crt_setting_info->iga_path = IGA1;
 821                         viaparinfo->tmds_setting_info->iga_path = IGA2;
 822                 } else if (viafb_LCD_ON && viafb_DVI_ON) {
 823                         viaparinfo->tmds_setting_info->iga_path = IGA1;
 824                         viaparinfo->lvds_setting_info->iga_path = IGA2;
 825                 } else if (viafb_LCD_ON && viafb_LCD2_ON) {
 826                         viaparinfo->lvds_setting_info->iga_path = IGA2;
 827                         viaparinfo->lvds_setting_info2->iga_path = IGA2;
 828                 } else if (viafb_CRT_ON) {
 829                         viaparinfo->crt_setting_info->iga_path = IGA1;
 830                 } else if (viafb_LCD_ON) {
 831                         viaparinfo->lvds_setting_info->iga_path = IGA2;
 832                 } else if (viafb_DVI_ON) {
 833                         viaparinfo->tmds_setting_info->iga_path = IGA1;
 834                 }
 835         }
 836
 837         viaparinfo->shared->iga1_devices = 0;
 838         viaparinfo->shared->iga2_devices = 0;
 839         if (viafb_CRT_ON) {
 840                 if (viaparinfo->crt_setting_info->iga_path == IGA1)
 841                         viaparinfo->shared->iga1_devices |= VIA_CRT;
 842                 else
 843                         viaparinfo->shared->iga2_devices |= VIA_CRT;
 844         }
 845
 846         if (viafb_DVI_ON) {
 847                 if (viaparinfo->tmds_setting_info->iga_path == IGA1)
 848                         viaparinfo->shared->iga1_devices |= get_dvi_devices(
 849                                 viaparinfo->chip_info->
 850                                 tmds_chip_info.output_interface);
 851                 else
 852                         viaparinfo->shared->iga2_devices |= get_dvi_devices(
 853                                 viaparinfo->chip_info->
 854                                 tmds_chip_info.output_interface);
 855         }
 856
 857         if (viafb_LCD_ON) {
 858                 if (viaparinfo->lvds_setting_info->iga_path == IGA1)
 859                         viaparinfo->shared->iga1_devices |= get_lcd_devices(
 860                                 viaparinfo->chip_info->
 861                                 lvds_chip_info.output_interface);
 862                 else
 863                         viaparinfo->shared->iga2_devices |= get_lcd_devices(
 864                                 viaparinfo->chip_info->
 865                                 lvds_chip_info.output_interface);
 866         }
 867
 868         if (viafb_LCD2_ON) {
 869                 if (viaparinfo->lvds_setting_info2->iga_path == IGA1)
 870                         viaparinfo->shared->iga1_devices |= get_lcd_devices(
 871                                 viaparinfo->chip_info->
 872                                 lvds_chip_info2.output_interface);
 873                 else
 874                         viaparinfo->shared->iga2_devices |= get_lcd_devices(
 875                                 viaparinfo->chip_info->
 876                                 lvds_chip_info2.output_interface);
 877         }
 878 }
 879
 880 static void set_color_register(u8 index, u8 red, u8 green, u8 blue)
 881 {
 882         outb(0xFF, 0x3C6); /* bit mask of palette */
 883         outb(index, 0x3C8);
 884         outb(red, 0x3C9);
 885         outb(green, 0x3C9);
 886         outb(blue, 0x3C9);
 887 }
 888
 889 void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue)
 890 {
 891         viafb_write_reg_mask(0x1A, VIASR, 0x00, 0x01);
 892         set_color_register(index, red, green, blue);
 893 }
 894
 895 void viafb_set_secondary_color_register(u8 index, u8 red, u8 green, u8 blue)
 896 {
 897         viafb_write_reg_mask(0x1A, VIASR, 0x01, 0x01);
 898         set_color_register(index, red, green, blue);
 899 }
 900
 901 static void set_source_common(u8 index, u8 offset, u8 iga)
 902 {
 903         u8 value, mask = 1 << offset;
 904
 905         switch (iga) {
 906         case IGA1:
 907                 value = 0x00;
 908                 break;
 909         case IGA2:
 910                 value = mask;
 911                 break;
 912         default:
 913                 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
 914                 return;
 915         }
 916
 917         via_write_reg_mask(VIACR, index, value, mask);
 918 }
 919
 920 static void set_crt_source(u8 iga)
 921 {
 922         u8 value;
 923
 924         switch (iga) {
 925         case IGA1:
 926                 value = 0x00;
 927                 break;
 928         case IGA2:
 929                 value = 0x40;
 930                 break;
 931         default:
 932                 printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga);
 933                 return;
 934         }
 935
 936         via_write_reg_mask(VIASR, 0x16, value, 0x40);
 937 }
 938
 939 static inline void set_ldvp0_source(u8 iga)
 940 {
 941         set_source_common(0x6C, 7, iga);
 942 }
 943
 944 static inline void set_ldvp1_source(u8 iga)
 945 {
 946         set_source_common(0x93, 7, iga);
 947 }
 948
 949 static inline void set_dvp0_source(u8 iga)
 950 {
 951         set_source_common(0x96, 4, iga);
 952 }
 953
 954 static inline void set_dvp1_source(u8 iga)
 955 {
 956         set_source_common(0x9B, 4, iga);
 957 }
 958
 959 static inline void set_lvds1_source(u8 iga)
 960 {
 961         set_source_common(0x99, 4, iga);
 962 }
 963
 964 static inline void set_lvds2_source(u8 iga)
 965 {
 966         set_source_common(0x97, 4, iga);
 967 }
 968
 969 void via_set_source(u32 devices, u8 iga)
 970 {
 971         if (devices & VIA_LDVP0)
 972                 set_ldvp0_source(iga);
 973         if (devices & VIA_LDVP1)
 974                 set_ldvp1_source(iga);
 975         if (devices & VIA_DVP0)
 976                 set_dvp0_source(iga);
 977         if (devices & VIA_CRT)
 978                 set_crt_source(iga);
 979         if (devices & VIA_DVP1)
 980                 set_dvp1_source(iga);
 981         if (devices & VIA_LVDS1)
 982                 set_lvds1_source(iga);
 983         if (devices & VIA_LVDS2)
 984                 set_lvds2_source(iga);
 985 }
 986
 987 static void set_crt_state(u8 state)
 988 {
 989         u8 value;
 990
 991         switch (state) {
 992         case VIA_STATE_ON:
 993                 value = 0x00;
 994                 break;
 995         case VIA_STATE_STANDBY:
 996                 value = 0x10;
 997                 break;
 998         case VIA_STATE_SUSPEND:
 999                 value = 0x20;
1000                 break;
1001         case VIA_STATE_OFF:
1002                 value = 0x30;
1003                 break;
1004         default:
1005                 return;
1006         }
1007
1008         via_write_reg_mask(VIACR, 0x36, value, 0x30);
1009 }
1010
1011 static void set_dvp0_state(u8 state)
1012 {
1013         u8 value;
1014
1015         switch (state) {
1016         case VIA_STATE_ON:
1017                 value = 0xC0;
1018                 break;
1019         case VIA_STATE_OFF:
1020                 value = 0x00;
1021                 break;
1022         default:
1023                 return;
1024         }
1025
1026         via_write_reg_mask(VIASR, 0x1E, value, 0xC0);
1027 }
1028
1029 static void set_dvp1_state(u8 state)
1030 {
1031         u8 value;
1032
1033         switch (state) {
1034         case VIA_STATE_ON:
1035                 value = 0x30;
1036                 break;
1037         case VIA_STATE_OFF:
1038                 value = 0x00;
1039                 break;
1040         default:
1041                 return;
1042         }
1043
1044         via_write_reg_mask(VIASR, 0x1E, value, 0x30);
1045 }
1046
1047 static void set_lvds1_state(u8 state)
1048 {
1049         u8 value;
1050
1051         switch (state) {
1052         case VIA_STATE_ON:
1053                 value = 0x03;
1054                 break;
1055         case VIA_STATE_OFF:
1056                 value = 0x00;
1057                 break;
1058         default:
1059                 return;
1060         }
1061
1062         via_write_reg_mask(VIASR, 0x2A, value, 0x03);
1063 }
1064
1065 static void set_lvds2_state(u8 state)
1066 {
1067         u8 value;
1068
1069         switch (state) {
1070         case VIA_STATE_ON:
1071                 value = 0x0C;
1072                 break;
1073         case VIA_STATE_OFF:
1074                 value = 0x00;
1075                 break;
1076         default:
1077                 return;
1078         }
1079
1080         via_write_reg_mask(VIASR, 0x2A, value, 0x0C);
1081 }
1082
1083 void via_set_state(u32 devices, u8 state)
1084 {
1085         /*
1086         TODO: Can we enable/disable these devices? How?
1087         if (devices & VIA_LDVP0)
1088         if (devices & VIA_LDVP1)
1089         */
1090         if (devices & VIA_DVP0)
1091                 set_dvp0_state(state);
1092         if (devices & VIA_CRT)
1093                 set_crt_state(state);
1094         if (devices & VIA_DVP1)
1095                 set_dvp1_state(state);
1096         if (devices & VIA_LVDS1)
1097                 set_lvds1_state(state);
1098         if (devices & VIA_LVDS2)
1099                 set_lvds2_state(state);
1100 }
1101
1102 void via_set_sync_polarity(u32 devices, u8 polarity)
1103 {
1104         if (polarity & ~(VIA_HSYNC_NEGATIVE | VIA_VSYNC_NEGATIVE)) {
1105                 printk(KERN_WARNING "viafb: Unsupported polarity: %d\n",
1106                         polarity);
1107                 return;
1108         }
1109
1110         if (devices & VIA_CRT)
1111                 via_write_misc_reg_mask(polarity << 6, 0xC0);
1112         if (devices & VIA_DVP1)
1113                 via_write_reg_mask(VIACR, 0x9B, polarity << 5, 0x60);
1114         if (devices & VIA_LVDS1)
1115                 via_write_reg_mask(VIACR, 0x99, polarity << 5, 0x60);
1116         if (devices & VIA_LVDS2)
1117                 via_write_reg_mask(VIACR, 0x97, polarity << 5, 0x60);
1118 }
1119
1120 u32 via_parse_odev(char *input, char **end)
1121 {
1122         char *ptr = input;
1123         u32 odev = 0;
1124         bool next = true;
1125         int i, len;
1126
1127         while (next) {
1128                 next = false;
1129                 for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
1130                         len = strlen(device_mapping[i].name);
1131                         if (!strncmp(ptr, device_mapping[i].name, len)) {
1132                                 odev |= device_mapping[i].device;
1133                                 ptr += len;
1134                                 if (*ptr == ',') {
1135                                         ptr++;
1136                                         next = true;
1137                                 }
1138                         }
1139                 }
1140         }
1141
1142         *end = ptr;
1143         return odev;
1144 }
1145
1146 void via_odev_to_seq(struct seq_file *m, u32 odev)
1147 {
1148         int i, count = 0;
1149
1150         for (i = 0; i < ARRAY_SIZE(device_mapping); i++) {
1151                 if (odev & device_mapping[i].device) {
1152                         if (count > 0)
1153                                 seq_putc(m, ',');
1154
1155                         seq_puts(m, device_mapping[i].name);
1156                         count++;
1157                 }
1158         }
1159
1160         seq_putc(m, '\n');
1161 }
1162
1163 static void load_fix_bit_crtc_reg(void)
1164 {
1165         /* always set to 1 */
1166         viafb_write_reg_mask(CR03, VIACR, 0x80, BIT7);
1167         /* line compare should set all bits = 1 (extend modes) */
1168         viafb_write_reg(CR18, VIACR, 0xff);
1169         /* line compare should set all bits = 1 (extend modes) */
1170         viafb_write_reg_mask(CR07, VIACR, 0x10, BIT4);
1171         /* line compare should set all bits = 1 (extend modes) */
1172         viafb_write_reg_mask(CR09, VIACR, 0x40, BIT6);
1173         /* line compare should set all bits = 1 (extend modes) */
1174         viafb_write_reg_mask(CR35, VIACR, 0x10, BIT4);
1175         /* line compare should set all bits = 1 (extend modes) */
1176         viafb_write_reg_mask(CR33, VIACR, 0x06, BIT0 + BIT1 + BIT2);
1177         /*viafb_write_reg_mask(CR32, VIACR, 0x01, BIT0); */
1178         /* extend mode always set to e3h */
1179         viafb_write_reg(CR17, VIACR, 0xe3);
1180         /* extend mode always set to 0h */
1181         viafb_write_reg(CR08, VIACR, 0x00);
1182         /* extend mode always set to 0h */
1183         viafb_write_reg(CR14, VIACR, 0x00);
1184
1185         /* If K8M800, enable Prefetch Mode. */
1186         if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
1187                 || (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890))
1188                 viafb_write_reg_mask(CR33, VIACR, 0x08, BIT3);
1189         if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
1190             && (viaparinfo->chip_info->gfx_chip_revision == CLE266_REVISION_AX))
1191                 viafb_write_reg_mask(SR1A, VIASR, 0x02, BIT1);
1192
1193 }
1194
1195 void viafb_load_reg(int timing_value, int viafb_load_reg_num,
1196         struct io_register *reg,
1197               int io_type)
1198 {
1199         int reg_mask;
1200         int bit_num = 0;
1201         int data;
1202         int i, j;
1203         int shift_next_reg;
1204         int start_index, end_index, cr_index;
1205         u16 get_bit;
1206
1207         for (i = 0; i < viafb_load_reg_num; i++) {
1208                 reg_mask = 0;
1209                 data = 0;
1210                 start_index = reg[i].start_bit;
1211                 end_index = reg[i].end_bit;
1212                 cr_index = reg[i].io_addr;
1213
1214                 shift_next_reg = bit_num;
1215                 for (j = start_index; j <= end_index; j++) {
1216                         /*if (bit_num==8) timing_value = timing_value >>8; */
1217                         reg_mask = reg_mask | (BIT0 << j);
1218                         get_bit = (timing_value & (BIT0 << bit_num));
1219                         data =
1220                             data | ((get_bit >> shift_next_reg) << start_index);
1221                         bit_num++;
1222                 }
1223                 if (io_type == VIACR)
1224                         viafb_write_reg_mask(cr_index, VIACR, data, reg_mask);
1225                 else
1226                         viafb_write_reg_mask(cr_index, VIASR, data, reg_mask);
1227         }
1228
1229 }
1230
1231 /* Write Registers */
1232 void viafb_write_regx(struct io_reg RegTable[], int ItemNum)
1233 {
1234         int i;
1235
1236         /*DEBUG_MSG(KERN_INFO "Table Size : %x!!\n",ItemNum ); */
1237
1238         for (i = 0; i < ItemNum; i++)
1239                 via_write_reg_mask(RegTable[i].port, RegTable[i].index,
1240                         RegTable[i].value, RegTable[i].mask);
1241 }
1242
1243 void viafb_load_fetch_count_reg(int h_addr, int bpp_byte, int set_iga)
1244 {
1245         int reg_value;
1246         int viafb_load_reg_num;
1247         struct io_register *reg = NULL;
1248
1249         switch (set_iga) {
1250         case IGA1:
1251                 reg_value = IGA1_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1252                 viafb_load_reg_num = fetch_count_reg.
1253                         iga1_fetch_count_reg.reg_num;
1254                 reg = fetch_count_reg.iga1_fetch_count_reg.reg;
1255                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1256                 break;
1257         case IGA2:
1258                 reg_value = IGA2_FETCH_COUNT_FORMULA(h_addr, bpp_byte);
1259                 viafb_load_reg_num = fetch_count_reg.
1260                         iga2_fetch_count_reg.reg_num;
1261                 reg = fetch_count_reg.iga2_fetch_count_reg.reg;
1262                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1263                 break;
1264         }
1265
1266 }
1267
1268 void viafb_load_FIFO_reg(int set_iga, int hor_active, int ver_active)
1269 {
1270         int reg_value;
1271         int viafb_load_reg_num;
1272         struct io_register *reg = NULL;
1273         int iga1_fifo_max_depth = 0, iga1_fifo_threshold =
1274             0, iga1_fifo_high_threshold = 0, iga1_display_queue_expire_num = 0;
1275         int iga2_fifo_max_depth = 0, iga2_fifo_threshold =
1276             0, iga2_fifo_high_threshold = 0, iga2_display_queue_expire_num = 0;
1277
1278         if (set_iga == IGA1) {
1279                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1280                         iga1_fifo_max_depth = K800_IGA1_FIFO_MAX_DEPTH;
1281                         iga1_fifo_threshold = K800_IGA1_FIFO_THRESHOLD;
1282                         iga1_fifo_high_threshold =
1283                             K800_IGA1_FIFO_HIGH_THRESHOLD;
1284                         /* If resolution > 1280x1024, expire length = 64, else
1285                            expire length = 128 */
1286                         if ((hor_active > 1280) && (ver_active > 1024))
1287                                 iga1_display_queue_expire_num = 16;
1288                         else
1289                                 iga1_display_queue_expire_num =
1290                                     K800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1291
1292                 }
1293
1294                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1295                         iga1_fifo_max_depth = P880_IGA1_FIFO_MAX_DEPTH;
1296                         iga1_fifo_threshold = P880_IGA1_FIFO_THRESHOLD;
1297                         iga1_fifo_high_threshold =
1298                             P880_IGA1_FIFO_HIGH_THRESHOLD;
1299                         iga1_display_queue_expire_num =
1300                             P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1301
1302                         /* If resolution > 1280x1024, expire length = 64, else
1303                            expire length = 128 */
1304                         if ((hor_active > 1280) && (ver_active > 1024))
1305                                 iga1_display_queue_expire_num = 16;
1306                         else
1307                                 iga1_display_queue_expire_num =
1308                                     P880_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1309                 }
1310
1311                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1312                         iga1_fifo_max_depth = CN700_IGA1_FIFO_MAX_DEPTH;
1313                         iga1_fifo_threshold = CN700_IGA1_FIFO_THRESHOLD;
1314                         iga1_fifo_high_threshold =
1315                             CN700_IGA1_FIFO_HIGH_THRESHOLD;
1316
1317                         /* If resolution > 1280x1024, expire length = 64,
1318                            else expire length = 128 */
1319                         if ((hor_active > 1280) && (ver_active > 1024))
1320                                 iga1_display_queue_expire_num = 16;
1321                         else
1322                                 iga1_display_queue_expire_num =
1323                                     CN700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1324                 }
1325
1326                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1327                         iga1_fifo_max_depth = CX700_IGA1_FIFO_MAX_DEPTH;
1328                         iga1_fifo_threshold = CX700_IGA1_FIFO_THRESHOLD;
1329                         iga1_fifo_high_threshold =
1330                             CX700_IGA1_FIFO_HIGH_THRESHOLD;
1331                         iga1_display_queue_expire_num =
1332                             CX700_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1333                 }
1334
1335                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1336                         iga1_fifo_max_depth = K8M890_IGA1_FIFO_MAX_DEPTH;
1337                         iga1_fifo_threshold = K8M890_IGA1_FIFO_THRESHOLD;
1338                         iga1_fifo_high_threshold =
1339                             K8M890_IGA1_FIFO_HIGH_THRESHOLD;
1340                         iga1_display_queue_expire_num =
1341                             K8M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1342                 }
1343
1344                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1345                         iga1_fifo_max_depth = P4M890_IGA1_FIFO_MAX_DEPTH;
1346                         iga1_fifo_threshold = P4M890_IGA1_FIFO_THRESHOLD;
1347                         iga1_fifo_high_threshold =
1348                             P4M890_IGA1_FIFO_HIGH_THRESHOLD;
1349                         iga1_display_queue_expire_num =
1350                             P4M890_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1351                 }
1352
1353                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1354                         iga1_fifo_max_depth = P4M900_IGA1_FIFO_MAX_DEPTH;
1355                         iga1_fifo_threshold = P4M900_IGA1_FIFO_THRESHOLD;
1356                         iga1_fifo_high_threshold =
1357                             P4M900_IGA1_FIFO_HIGH_THRESHOLD;
1358                         iga1_display_queue_expire_num =
1359                             P4M900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1360                 }
1361
1362                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1363                         iga1_fifo_max_depth = VX800_IGA1_FIFO_MAX_DEPTH;
1364                         iga1_fifo_threshold = VX800_IGA1_FIFO_THRESHOLD;
1365                         iga1_fifo_high_threshold =
1366                             VX800_IGA1_FIFO_HIGH_THRESHOLD;
1367                         iga1_display_queue_expire_num =
1368                             VX800_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1369                 }
1370
1371                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1372                         iga1_fifo_max_depth = VX855_IGA1_FIFO_MAX_DEPTH;
1373                         iga1_fifo_threshold = VX855_IGA1_FIFO_THRESHOLD;
1374                         iga1_fifo_high_threshold =
1375                             VX855_IGA1_FIFO_HIGH_THRESHOLD;
1376                         iga1_display_queue_expire_num =
1377                             VX855_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1378                 }
1379
1380                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1381                         iga1_fifo_max_depth = VX900_IGA1_FIFO_MAX_DEPTH;
1382                         iga1_fifo_threshold = VX900_IGA1_FIFO_THRESHOLD;
1383                         iga1_fifo_high_threshold =
1384                             VX900_IGA1_FIFO_HIGH_THRESHOLD;
1385                         iga1_display_queue_expire_num =
1386                             VX900_IGA1_DISPLAY_QUEUE_EXPIRE_NUM;
1387                 }
1388
1389                 /* Set Display FIFO Depath Select */
1390                 reg_value = IGA1_FIFO_DEPTH_SELECT_FORMULA(iga1_fifo_max_depth);
1391                 viafb_load_reg_num =
1392                     display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg_num;
1393                 reg = display_fifo_depth_reg.iga1_fifo_depth_select_reg.reg;
1394                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1395
1396                 /* Set Display FIFO Threshold Select */
1397                 reg_value = IGA1_FIFO_THRESHOLD_FORMULA(iga1_fifo_threshold);
1398                 viafb_load_reg_num =
1399                     fifo_threshold_select_reg.
1400                     iga1_fifo_threshold_select_reg.reg_num;
1401                 reg =
1402                     fifo_threshold_select_reg.
1403                     iga1_fifo_threshold_select_reg.reg;
1404                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1405
1406                 /* Set FIFO High Threshold Select */
1407                 reg_value =
1408                     IGA1_FIFO_HIGH_THRESHOLD_FORMULA(iga1_fifo_high_threshold);
1409                 viafb_load_reg_num =
1410                     fifo_high_threshold_select_reg.
1411                     iga1_fifo_high_threshold_select_reg.reg_num;
1412                 reg =
1413                     fifo_high_threshold_select_reg.
1414                     iga1_fifo_high_threshold_select_reg.reg;
1415                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1416
1417                 /* Set Display Queue Expire Num */
1418                 reg_value =
1419                     IGA1_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1420                     (iga1_display_queue_expire_num);
1421                 viafb_load_reg_num =
1422                     display_queue_expire_num_reg.
1423                     iga1_display_queue_expire_num_reg.reg_num;
1424                 reg =
1425                     display_queue_expire_num_reg.
1426                     iga1_display_queue_expire_num_reg.reg;
1427                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIASR);
1428
1429         } else {
1430                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1431                         iga2_fifo_max_depth = K800_IGA2_FIFO_MAX_DEPTH;
1432                         iga2_fifo_threshold = K800_IGA2_FIFO_THRESHOLD;
1433                         iga2_fifo_high_threshold =
1434                             K800_IGA2_FIFO_HIGH_THRESHOLD;
1435
1436                         /* If resolution > 1280x1024, expire length = 64,
1437                            else  expire length = 128 */
1438                         if ((hor_active > 1280) && (ver_active > 1024))
1439                                 iga2_display_queue_expire_num = 16;
1440                         else
1441                                 iga2_display_queue_expire_num =
1442                                     K800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1443                 }
1444
1445                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_PM800) {
1446                         iga2_fifo_max_depth = P880_IGA2_FIFO_MAX_DEPTH;
1447                         iga2_fifo_threshold = P880_IGA2_FIFO_THRESHOLD;
1448                         iga2_fifo_high_threshold =
1449                             P880_IGA2_FIFO_HIGH_THRESHOLD;
1450
1451                         /* If resolution > 1280x1024, expire length = 64,
1452                            else  expire length = 128 */
1453                         if ((hor_active > 1280) && (ver_active > 1024))
1454                                 iga2_display_queue_expire_num = 16;
1455                         else
1456                                 iga2_display_queue_expire_num =
1457                                     P880_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1458                 }
1459
1460                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CN700) {
1461                         iga2_fifo_max_depth = CN700_IGA2_FIFO_MAX_DEPTH;
1462                         iga2_fifo_threshold = CN700_IGA2_FIFO_THRESHOLD;
1463                         iga2_fifo_high_threshold =
1464                             CN700_IGA2_FIFO_HIGH_THRESHOLD;
1465
1466                         /* If resolution > 1280x1024, expire length = 64,
1467                            else expire length = 128 */
1468                         if ((hor_active > 1280) && (ver_active > 1024))
1469                                 iga2_display_queue_expire_num = 16;
1470                         else
1471                                 iga2_display_queue_expire_num =
1472                                     CN700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1473                 }
1474
1475                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1476                         iga2_fifo_max_depth = CX700_IGA2_FIFO_MAX_DEPTH;
1477                         iga2_fifo_threshold = CX700_IGA2_FIFO_THRESHOLD;
1478                         iga2_fifo_high_threshold =
1479                             CX700_IGA2_FIFO_HIGH_THRESHOLD;
1480                         iga2_display_queue_expire_num =
1481                             CX700_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1482                 }
1483
1484                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K8M890) {
1485                         iga2_fifo_max_depth = K8M890_IGA2_FIFO_MAX_DEPTH;
1486                         iga2_fifo_threshold = K8M890_IGA2_FIFO_THRESHOLD;
1487                         iga2_fifo_high_threshold =
1488                             K8M890_IGA2_FIFO_HIGH_THRESHOLD;
1489                         iga2_display_queue_expire_num =
1490                             K8M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1491                 }
1492
1493                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M890) {
1494                         iga2_fifo_max_depth = P4M890_IGA2_FIFO_MAX_DEPTH;
1495                         iga2_fifo_threshold = P4M890_IGA2_FIFO_THRESHOLD;
1496                         iga2_fifo_high_threshold =
1497                             P4M890_IGA2_FIFO_HIGH_THRESHOLD;
1498                         iga2_display_queue_expire_num =
1499                             P4M890_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1500                 }
1501
1502                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_P4M900) {
1503                         iga2_fifo_max_depth = P4M900_IGA2_FIFO_MAX_DEPTH;
1504                         iga2_fifo_threshold = P4M900_IGA2_FIFO_THRESHOLD;
1505                         iga2_fifo_high_threshold =
1506                             P4M900_IGA2_FIFO_HIGH_THRESHOLD;
1507                         iga2_display_queue_expire_num =
1508                             P4M900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1509                 }
1510
1511                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX800) {
1512                         iga2_fifo_max_depth = VX800_IGA2_FIFO_MAX_DEPTH;
1513                         iga2_fifo_threshold = VX800_IGA2_FIFO_THRESHOLD;
1514                         iga2_fifo_high_threshold =
1515                             VX800_IGA2_FIFO_HIGH_THRESHOLD;
1516                         iga2_display_queue_expire_num =
1517                             VX800_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1518                 }
1519
1520                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX855) {
1521                         iga2_fifo_max_depth = VX855_IGA2_FIFO_MAX_DEPTH;
1522                         iga2_fifo_threshold = VX855_IGA2_FIFO_THRESHOLD;
1523                         iga2_fifo_high_threshold =
1524                             VX855_IGA2_FIFO_HIGH_THRESHOLD;
1525                         iga2_display_queue_expire_num =
1526                             VX855_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1527                 }
1528
1529                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_VX900) {
1530                         iga2_fifo_max_depth = VX900_IGA2_FIFO_MAX_DEPTH;
1531                         iga2_fifo_threshold = VX900_IGA2_FIFO_THRESHOLD;
1532                         iga2_fifo_high_threshold =
1533                             VX900_IGA2_FIFO_HIGH_THRESHOLD;
1534                         iga2_display_queue_expire_num =
1535                             VX900_IGA2_DISPLAY_QUEUE_EXPIRE_NUM;
1536                 }
1537
1538                 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800) {
1539                         /* Set Display FIFO Depath Select */
1540                         reg_value =
1541                             IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth)
1542                             - 1;
1543                         /* Patch LCD in IGA2 case */
1544                         viafb_load_reg_num =
1545                             display_fifo_depth_reg.
1546                             iga2_fifo_depth_select_reg.reg_num;
1547                         reg =
1548                             display_fifo_depth_reg.
1549                             iga2_fifo_depth_select_reg.reg;
1550                         viafb_load_reg(reg_value,
1551                                 viafb_load_reg_num, reg, VIACR);
1552                 } else {
1553
1554                         /* Set Display FIFO Depath Select */
1555                         reg_value =
1556                             IGA2_FIFO_DEPTH_SELECT_FORMULA(iga2_fifo_max_depth);
1557                         viafb_load_reg_num =
1558                             display_fifo_depth_reg.
1559                             iga2_fifo_depth_select_reg.reg_num;
1560                         reg =
1561                             display_fifo_depth_reg.
1562                             iga2_fifo_depth_select_reg.reg;
1563                         viafb_load_reg(reg_value,
1564                                 viafb_load_reg_num, reg, VIACR);
1565                 }
1566
1567                 /* Set Display FIFO Threshold Select */
1568                 reg_value = IGA2_FIFO_THRESHOLD_FORMULA(iga2_fifo_threshold);
1569                 viafb_load_reg_num =
1570                     fifo_threshold_select_reg.
1571                     iga2_fifo_threshold_select_reg.reg_num;
1572                 reg =
1573                     fifo_threshold_select_reg.
1574                     iga2_fifo_threshold_select_reg.reg;
1575                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1576
1577                 /* Set FIFO High Threshold Select */
1578                 reg_value =
1579                     IGA2_FIFO_HIGH_THRESHOLD_FORMULA(iga2_fifo_high_threshold);
1580                 viafb_load_reg_num =
1581                     fifo_high_threshold_select_reg.
1582                     iga2_fifo_high_threshold_select_reg.reg_num;
1583                 reg =
1584                     fifo_high_threshold_select_reg.
1585                     iga2_fifo_high_threshold_select_reg.reg;
1586                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1587
1588                 /* Set Display Queue Expire Num */
1589                 reg_value =
1590                     IGA2_DISPLAY_QUEUE_EXPIRE_NUM_FORMULA
1591                     (iga2_display_queue_expire_num);
1592                 viafb_load_reg_num =
1593                     display_queue_expire_num_reg.
1594                     iga2_display_queue_expire_num_reg.reg_num;
1595                 reg =
1596                     display_queue_expire_num_reg.
1597                     iga2_display_queue_expire_num_reg.reg;
1598                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1599
1600         }
1601
1602 }
1603
1604 static u32 cle266_encode_pll(struct pll_config pll)
1605 {
1606         return (pll.multiplier << 8)
1607                 | (pll.rshift << 6)
1608                 | pll.divisor;
1609 }
1610
1611 static u32 k800_encode_pll(struct pll_config pll)
1612 {
1613         return ((pll.divisor - 2) << 16)
1614                 | (pll.rshift << 10)
1615                 | (pll.multiplier - 2);
1616 }
1617
1618 static u32 vx855_encode_pll(struct pll_config pll)
1619 {
1620         return (pll.divisor << 16)
1621                 | (pll.rshift << 10)
1622                 | pll.multiplier;
1623 }
1624
1625 static inline u32 get_pll_internal_frequency(u32 ref_freq,
1626         struct pll_config pll)
1627 {
1628         return ref_freq / pll.divisor * pll.multiplier;
1629 }
1630
1631 static inline u32 get_pll_output_frequency(u32 ref_freq, struct pll_config pll)
1632 {
1633         return get_pll_internal_frequency(ref_freq, pll)>>pll.rshift;
1634 }
1635
1636 static struct pll_config get_pll_config(struct pll_config *config, int size,
1637         int clk)
1638 {
1639         struct pll_config best = config[0];
1640         const u32 f0 = 14318180; /* X1 frequency */
1641         int i;
1642
1643         for (i = 1; i < size; i++) {
1644                 if (abs(get_pll_output_frequency(f0, config[i]) - clk)
1645                         < abs(get_pll_output_frequency(f0, best) - clk))
1646                         best = config[i];
1647         }
1648
1649         return best;
1650 }
1651
1652 u32 viafb_get_clk_value(int clk)
1653 {
1654         u32 value = 0;
1655
1656         switch (viaparinfo->chip_info->gfx_chip_name) {
1657         case UNICHROME_CLE266:
1658         case UNICHROME_K400:
1659                 value = cle266_encode_pll(get_pll_config(cle266_pll_config,
1660                         ARRAY_SIZE(cle266_pll_config), clk));
1661                 break;
1662         case UNICHROME_K800:
1663         case UNICHROME_PM800:
1664         case UNICHROME_CN700:
1665                 value = k800_encode_pll(get_pll_config(k800_pll_config,
1666                         ARRAY_SIZE(k800_pll_config), clk));
1667                 break;
1668         case UNICHROME_CX700:
1669         case UNICHROME_CN750:
1670         case UNICHROME_K8M890:
1671         case UNICHROME_P4M890:
1672         case UNICHROME_P4M900:
1673         case UNICHROME_VX800:
1674                 value = k800_encode_pll(get_pll_config(cx700_pll_config,
1675                         ARRAY_SIZE(cx700_pll_config), clk));
1676                 break;
1677         case UNICHROME_VX855:
1678         case UNICHROME_VX900:
1679                 value = vx855_encode_pll(get_pll_config(vx855_pll_config,
1680                         ARRAY_SIZE(vx855_pll_config), clk));
1681                 break;
1682         }
1683
1684         return value;
1685 }
1686
1687 /* Set VCLK*/
1688 void viafb_set_vclock(u32 clk, int set_iga)
1689 {
1690         /* H.W. Reset : ON */
1691         viafb_write_reg_mask(CR17, VIACR, 0x00, BIT7);
1692
1693         if (set_iga == IGA1) {
1694                 /* Change D,N FOR VCLK */
1695                 switch (viaparinfo->chip_info->gfx_chip_name) {
1696                 case UNICHROME_CLE266:
1697                 case UNICHROME_K400:
1698                         via_write_reg(VIASR, SR46, (clk & 0x00FF));
1699                         via_write_reg(VIASR, SR47, (clk & 0xFF00) >> 8);
1700                         break;
1701
1702                 case UNICHROME_K800:
1703                 case UNICHROME_PM800:
1704                 case UNICHROME_CN700:
1705                 case UNICHROME_CX700:
1706                 case UNICHROME_CN750:
1707                 case UNICHROME_K8M890:
1708                 case UNICHROME_P4M890:
1709                 case UNICHROME_P4M900:
1710                 case UNICHROME_VX800:
1711                 case UNICHROME_VX855:
1712                 case UNICHROME_VX900:
1713                         via_write_reg(VIASR, SR44, (clk & 0x0000FF));
1714                         via_write_reg(VIASR, SR45, (clk & 0x00FF00) >> 8);
1715                         via_write_reg(VIASR, SR46, (clk & 0xFF0000) >> 16);
1716                         break;
1717                 }
1718         }
1719
1720         if (set_iga == IGA2) {
1721                 /* Change D,N FOR LCK */
1722                 switch (viaparinfo->chip_info->gfx_chip_name) {
1723                 case UNICHROME_CLE266:
1724                 case UNICHROME_K400:
1725                         via_write_reg(VIASR, SR44, (clk & 0x00FF));
1726                         via_write_reg(VIASR, SR45, (clk & 0xFF00) >> 8);
1727                         break;
1728
1729                 case UNICHROME_K800:
1730                 case UNICHROME_PM800:
1731                 case UNICHROME_CN700:
1732                 case UNICHROME_CX700:
1733                 case UNICHROME_CN750:
1734                 case UNICHROME_K8M890:
1735                 case UNICHROME_P4M890:
1736                 case UNICHROME_P4M900:
1737                 case UNICHROME_VX800:
1738                 case UNICHROME_VX855:
1739                 case UNICHROME_VX900:
1740                         via_write_reg(VIASR, SR4A, (clk & 0x0000FF));
1741                         via_write_reg(VIASR, SR4B, (clk & 0x00FF00) >> 8);
1742                         via_write_reg(VIASR, SR4C, (clk & 0xFF0000) >> 16);
1743                         break;
1744                 }
1745         }
1746
1747         /* H.W. Reset : OFF */
1748         viafb_write_reg_mask(CR17, VIACR, 0x80, BIT7);
1749
1750         /* Reset PLL */
1751         if (set_iga == IGA1) {
1752                 viafb_write_reg_mask(SR40, VIASR, 0x02, BIT1);
1753                 viafb_write_reg_mask(SR40, VIASR, 0x00, BIT1);
1754         }
1755
1756         if (set_iga == IGA2) {
1757                 viafb_write_reg_mask(SR40, VIASR, 0x04, BIT2);
1758                 viafb_write_reg_mask(SR40, VIASR, 0x00, BIT2);
1759         }
1760
1761         /* Fire! */
1762         via_write_misc_reg_mask(0x0C, 0x0C); /* select external clock */
1763 }
1764
1765 void viafb_load_crtc_timing(struct display_timing device_timing,
1766         int set_iga)
1767 {
1768         int i;
1769         int viafb_load_reg_num = 0;
1770         int reg_value = 0;
1771         struct io_register *reg = NULL;
1772
1773         viafb_unlock_crt();
1774
1775         for (i = 0; i < 12; i++) {
1776                 if (set_iga == IGA1) {
1777                         switch (i) {
1778                         case H_TOTAL_INDEX:
1779                                 reg_value =
1780                                     IGA1_HOR_TOTAL_FORMULA(device_timing.
1781                                                            hor_total);
1782                                 viafb_load_reg_num =
1783                                         iga1_crtc_reg.hor_total.reg_num;
1784                                 reg = iga1_crtc_reg.hor_total.reg;
1785                                 break;
1786                         case H_ADDR_INDEX:
1787                                 reg_value =
1788                                     IGA1_HOR_ADDR_FORMULA(device_timing.
1789                                                           hor_addr);
1790                                 viafb_load_reg_num =
1791                                         iga1_crtc_reg.hor_addr.reg_num;
1792                                 reg = iga1_crtc_reg.hor_addr.reg;
1793                                 break;
1794                         case H_BLANK_START_INDEX:
1795                                 reg_value =
1796                                     IGA1_HOR_BLANK_START_FORMULA
1797                                     (device_timing.hor_blank_start);
1798                                 viafb_load_reg_num =
1799                                     iga1_crtc_reg.hor_blank_start.reg_num;
1800                                 reg = iga1_crtc_reg.hor_blank_start.reg;
1801                                 break;
1802                         case H_BLANK_END_INDEX:
1803                                 reg_value =
1804                                     IGA1_HOR_BLANK_END_FORMULA
1805                                     (device_timing.hor_blank_start,
1806                                      device_timing.hor_blank_end);
1807                                 viafb_load_reg_num =
1808                                     iga1_crtc_reg.hor_blank_end.reg_num;
1809                                 reg = iga1_crtc_reg.hor_blank_end.reg;
1810                                 break;
1811                         case H_SYNC_START_INDEX:
1812                                 reg_value =
1813                                     IGA1_HOR_SYNC_START_FORMULA
1814                                     (device_timing.hor_sync_start);
1815                                 viafb_load_reg_num =
1816                                     iga1_crtc_reg.hor_sync_start.reg_num;
1817                                 reg = iga1_crtc_reg.hor_sync_start.reg;
1818                                 break;
1819                         case H_SYNC_END_INDEX:
1820                                 reg_value =
1821                                     IGA1_HOR_SYNC_END_FORMULA
1822                                     (device_timing.hor_sync_start,
1823                                      device_timing.hor_sync_end);
1824                                 viafb_load_reg_num =
1825                                     iga1_crtc_reg.hor_sync_end.reg_num;
1826                                 reg = iga1_crtc_reg.hor_sync_end.reg;
1827                                 break;
1828                         case V_TOTAL_INDEX:
1829                                 reg_value =
1830                                     IGA1_VER_TOTAL_FORMULA(device_timing.
1831                                                            ver_total);
1832                                 viafb_load_reg_num =
1833                                         iga1_crtc_reg.ver_total.reg_num;
1834                                 reg = iga1_crtc_reg.ver_total.reg;
1835                                 break;
1836                         case V_ADDR_INDEX:
1837                                 reg_value =
1838                                     IGA1_VER_ADDR_FORMULA(device_timing.
1839                                                           ver_addr);
1840                                 viafb_load_reg_num =
1841                                         iga1_crtc_reg.ver_addr.reg_num;
1842                                 reg = iga1_crtc_reg.ver_addr.reg;
1843                                 break;
1844                         case V_BLANK_START_INDEX:
1845                                 reg_value =
1846                                     IGA1_VER_BLANK_START_FORMULA
1847                                     (device_timing.ver_blank_start);
1848                                 viafb_load_reg_num =
1849                                     iga1_crtc_reg.ver_blank_start.reg_num;
1850                                 reg = iga1_crtc_reg.ver_blank_start.reg;
1851                                 break;
1852                         case V_BLANK_END_INDEX:
1853                                 reg_value =
1854                                     IGA1_VER_BLANK_END_FORMULA
1855                                     (device_timing.ver_blank_start,
1856                                      device_timing.ver_blank_end);
1857                                 viafb_load_reg_num =
1858                                     iga1_crtc_reg.ver_blank_end.reg_num;
1859                                 reg = iga1_crtc_reg.ver_blank_end.reg;
1860                                 break;
1861                         case V_SYNC_START_INDEX:
1862                                 reg_value =
1863                                     IGA1_VER_SYNC_START_FORMULA
1864                                     (device_timing.ver_sync_start);
1865                                 viafb_load_reg_num =
1866                                     iga1_crtc_reg.ver_sync_start.reg_num;
1867                                 reg = iga1_crtc_reg.ver_sync_start.reg;
1868                                 break;
1869                         case V_SYNC_END_INDEX:
1870                                 reg_value =
1871                                     IGA1_VER_SYNC_END_FORMULA
1872                                     (device_timing.ver_sync_start,
1873                                      device_timing.ver_sync_end);
1874                                 viafb_load_reg_num =
1875                                     iga1_crtc_reg.ver_sync_end.reg_num;
1876                                 reg = iga1_crtc_reg.ver_sync_end.reg;
1877                                 break;
1878
1879                         }
1880                 }
1881
1882                 if (set_iga == IGA2) {
1883                         switch (i) {
1884                         case H_TOTAL_INDEX:
1885                                 reg_value =
1886                                     IGA2_HOR_TOTAL_FORMULA(device_timing.
1887                                                            hor_total);
1888                                 viafb_load_reg_num =
1889                                         iga2_crtc_reg.hor_total.reg_num;
1890                                 reg = iga2_crtc_reg.hor_total.reg;
1891                                 break;
1892                         case H_ADDR_INDEX:
1893                                 reg_value =
1894                                     IGA2_HOR_ADDR_FORMULA(device_timing.
1895                                                           hor_addr);
1896                                 viafb_load_reg_num =
1897                                         iga2_crtc_reg.hor_addr.reg_num;
1898                                 reg = iga2_crtc_reg.hor_addr.reg;
1899                                 break;
1900                         case H_BLANK_START_INDEX:
1901                                 reg_value =
1902                                     IGA2_HOR_BLANK_START_FORMULA
1903                                     (device_timing.hor_blank_start);
1904                                 viafb_load_reg_num =
1905                                     iga2_crtc_reg.hor_blank_start.reg_num;
1906                                 reg = iga2_crtc_reg.hor_blank_start.reg;
1907                                 break;
1908                         case H_BLANK_END_INDEX:
1909                                 reg_value =
1910                                     IGA2_HOR_BLANK_END_FORMULA
1911                                     (device_timing.hor_blank_start,
1912                                      device_timing.hor_blank_end);
1913                                 viafb_load_reg_num =
1914                                     iga2_crtc_reg.hor_blank_end.reg_num;
1915                                 reg = iga2_crtc_reg.hor_blank_end.reg;
1916                                 break;
1917                         case H_SYNC_START_INDEX:
1918                                 reg_value =
1919                                     IGA2_HOR_SYNC_START_FORMULA
1920                                     (device_timing.hor_sync_start);
1921                                 if (UNICHROME_CN700 <=
1922                                         viaparinfo->chip_info->gfx_chip_name)
1923                                         viafb_load_reg_num =
1924                                             iga2_crtc_reg.hor_sync_start.
1925                                             reg_num;
1926                                 else
1927                                         viafb_load_reg_num = 3;
1928                                 reg = iga2_crtc_reg.hor_sync_start.reg;
1929                                 break;
1930                         case H_SYNC_END_INDEX:
1931                                 reg_value =
1932                                     IGA2_HOR_SYNC_END_FORMULA
1933                                     (device_timing.hor_sync_start,
1934                                      device_timing.hor_sync_end);
1935                                 viafb_load_reg_num =
1936                                     iga2_crtc_reg.hor_sync_end.reg_num;
1937                                 reg = iga2_crtc_reg.hor_sync_end.reg;
1938                                 break;
1939                         case V_TOTAL_INDEX:
1940                                 reg_value =
1941                                     IGA2_VER_TOTAL_FORMULA(device_timing.
1942                                                            ver_total);
1943                                 viafb_load_reg_num =
1944                                         iga2_crtc_reg.ver_total.reg_num;
1945                                 reg = iga2_crtc_reg.ver_total.reg;
1946                                 break;
1947                         case V_ADDR_INDEX:
1948                                 reg_value =
1949                                     IGA2_VER_ADDR_FORMULA(device_timing.
1950                                                           ver_addr);
1951                                 viafb_load_reg_num =
1952                                         iga2_crtc_reg.ver_addr.reg_num;
1953                                 reg = iga2_crtc_reg.ver_addr.reg;
1954                                 break;
1955                         case V_BLANK_START_INDEX:
1956                                 reg_value =
1957                                     IGA2_VER_BLANK_START_FORMULA
1958                                     (device_timing.ver_blank_start);
1959                                 viafb_load_reg_num =
1960                                     iga2_crtc_reg.ver_blank_start.reg_num;
1961                                 reg = iga2_crtc_reg.ver_blank_start.reg;
1962                                 break;
1963                         case V_BLANK_END_INDEX:
1964                                 reg_value =
1965                                     IGA2_VER_BLANK_END_FORMULA
1966                                     (device_timing.ver_blank_start,
1967                                      device_timing.ver_blank_end);
1968                                 viafb_load_reg_num =
1969                                     iga2_crtc_reg.ver_blank_end.reg_num;
1970                                 reg = iga2_crtc_reg.ver_blank_end.reg;
1971                                 break;
1972                         case V_SYNC_START_INDEX:
1973                                 reg_value =
1974                                     IGA2_VER_SYNC_START_FORMULA
1975                                     (device_timing.ver_sync_start);
1976                                 viafb_load_reg_num =
1977                                     iga2_crtc_reg.ver_sync_start.reg_num;
1978                                 reg = iga2_crtc_reg.ver_sync_start.reg;
1979                                 break;
1980                         case V_SYNC_END_INDEX:
1981                                 reg_value =
1982                                     IGA2_VER_SYNC_END_FORMULA
1983                                     (device_timing.ver_sync_start,
1984                                      device_timing.ver_sync_end);
1985                                 viafb_load_reg_num =
1986                                     iga2_crtc_reg.ver_sync_end.reg_num;
1987                                 reg = iga2_crtc_reg.ver_sync_end.reg;
1988                                 break;
1989
1990                         }
1991                 }
1992                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1993         }
1994
1995         viafb_lock_crt();
1996 }
1997
1998 void viafb_fill_crtc_timing(struct crt_mode_table *crt_table,
1999         struct VideoModeTable *video_mode, int bpp_byte, int set_iga)
2000 {
2001         struct display_timing crt_reg;
2002         int i;
2003         int index = 0;
2004         int h_addr, v_addr;
2005         u32 pll_D_N, clock;
2006
2007         for (i = 0; i < video_mode->mode_array; i++) {
2008                 index = i;
2009
2010                 if (crt_table[i].refresh_rate == viaparinfo->
2011                         crt_setting_info->refresh_rate)
2012                         break;
2013         }
2014
2015         crt_reg = crt_table[index].crtc;
2016
2017         /* Mode 640x480 has border, but LCD/DFP didn't have border. */
2018         /* So we would delete border. */
2019         if ((viafb_LCD_ON | viafb_DVI_ON)
2020             && video_mode->crtc[0].crtc.hor_addr == 640
2021             && video_mode->crtc[0].crtc.ver_addr == 480
2022             && viaparinfo->crt_setting_info->refresh_rate == 60) {
2023                 /* The border is 8 pixels. */
2024                 crt_reg.hor_blank_start = crt_reg.hor_blank_start - 8;
2025
2026                 /* Blanking time should add left and right borders. */
2027                 crt_reg.hor_blank_end = crt_reg.hor_blank_end + 16;
2028         }
2029
2030         h_addr = crt_reg.hor_addr;
2031         v_addr = crt_reg.ver_addr;
2032         if (set_iga == IGA1) {
2033                 viafb_unlock_crt();
2034                 viafb_write_reg(CR09, VIACR, 0x00);     /*initial CR09=0 */
2035                 viafb_write_reg_mask(CR11, VIACR, 0x00, BIT4 + BIT5 + BIT6);
2036                 viafb_write_reg_mask(CR17, VIACR, 0x00, BIT7);
2037         }
2038
2039         switch (set_iga) {
2040         case IGA1:
2041                 viafb_load_crtc_timing(crt_reg, IGA1);
2042                 break;
2043         case IGA2:
2044                 viafb_load_crtc_timing(crt_reg, IGA2);
2045                 break;
2046         }
2047
2048         load_fix_bit_crtc_reg();
2049         viafb_lock_crt();
2050         viafb_write_reg_mask(CR17, VIACR, 0x80, BIT7);
2051         viafb_load_fetch_count_reg(h_addr, bpp_byte, set_iga);
2052
2053         /* load FIFO */
2054         if ((viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
2055             && (viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400))
2056                 viafb_load_FIFO_reg(set_iga, h_addr, v_addr);
2057
2058         clock = crt_reg.hor_total * crt_reg.ver_total
2059                 * crt_table[index].refresh_rate;
2060         pll_D_N = viafb_get_clk_value(clock);
2061         DEBUG_MSG(KERN_INFO "PLL=%x", pll_D_N);
2062         viafb_set_vclock(pll_D_N, set_iga);
2063
2064 }
2065
2066 void __devinit viafb_init_chip_info(int chip_type)
2067 {
2068         init_gfx_chip_info(chip_type);
2069         init_tmds_chip_info();
2070         init_lvds_chip_info();
2071
2072         viaparinfo->crt_setting_info->iga_path = IGA1;
2073         viaparinfo->crt_setting_info->refresh_rate = viafb_refresh;
2074
2075         /*Set IGA path for each device */
2076         viafb_set_iga_path();
2077
2078         viaparinfo->lvds_setting_info->display_method = viafb_lcd_dsp_method;
2079         viaparinfo->lvds_setting_info->lcd_mode = viafb_lcd_mode;
2080         viaparinfo->lvds_setting_info2->display_method =
2081                 viaparinfo->lvds_setting_info->display_method;
2082         viaparinfo->lvds_setting_info2->lcd_mode =
2083                 viaparinfo->lvds_setting_info->lcd_mode;
2084 }
2085
2086 void viafb_update_device_setting(int hres, int vres,
2087         int bpp, int vmode_refresh, int flag)
2088 {
2089         if (flag == 0) {
2090                 viaparinfo->crt_setting_info->refresh_rate =
2091                         vmode_refresh;
2092
2093                 viaparinfo->tmds_setting_info->h_active = hres;
2094                 viaparinfo->tmds_setting_info->v_active = vres;
2095
2096                 viaparinfo->lvds_setting_info->h_active = hres;
2097                 viaparinfo->lvds_setting_info->v_active = vres;
2098                 viaparinfo->lvds_setting_info->bpp = bpp;
2099                 viaparinfo->lvds_setting_info2->h_active = hres;
2100                 viaparinfo->lvds_setting_info2->v_active = vres;
2101                 viaparinfo->lvds_setting_info2->bpp = bpp;
2102         } else {
2103
2104                 if (viaparinfo->tmds_setting_info->iga_path == IGA2) {
2105                         viaparinfo->tmds_setting_info->h_active = hres;
2106                         viaparinfo->tmds_setting_info->v_active = vres;
2107                 }
2108
2109                 if (viaparinfo->lvds_setting_info->iga_path == IGA2) {
2110                         viaparinfo->lvds_setting_info->h_active = hres;
2111                         viaparinfo->lvds_setting_info->v_active = vres;
2112                         viaparinfo->lvds_setting_info->bpp = bpp;
2113                 }
2114                 if (IGA2 == viaparinfo->lvds_setting_info2->iga_path) {
2115                         viaparinfo->lvds_setting_info2->h_active = hres;
2116                         viaparinfo->lvds_setting_info2->v_active = vres;
2117                         viaparinfo->lvds_setting_info2->bpp = bpp;
2118                 }
2119         }
2120 }
2121
2122 static void __devinit init_gfx_chip_info(int chip_type)
2123 {
2124         u8 tmp;
2125
2126         viaparinfo->chip_info->gfx_chip_name = chip_type;
2127
2128         /* Check revision of CLE266 Chip */
2129         if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
2130                 /* CR4F only define in CLE266.CX chip */
2131                 tmp = viafb_read_reg(VIACR, CR4F);
2132                 viafb_write_reg(CR4F, VIACR, 0x55);
2133                 if (viafb_read_reg(VIACR, CR4F) != 0x55)
2134                         viaparinfo->chip_info->gfx_chip_revision =
2135                         CLE266_REVISION_AX;
2136                 else
2137                         viaparinfo->chip_info->gfx_chip_revision =
2138                         CLE266_REVISION_CX;
2139                 /* restore orignal CR4F value */
2140                 viafb_write_reg(CR4F, VIACR, tmp);
2141         }
2142
2143         if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
2144                 tmp = viafb_read_reg(VIASR, SR43);
2145                 DEBUG_MSG(KERN_INFO "SR43:%X\n", tmp);
2146                 if (tmp & 0x02) {
2147                         viaparinfo->chip_info->gfx_chip_revision =
2148                                 CX700_REVISION_700M2;
2149                 } else if (tmp & 0x40) {
2150                         viaparinfo->chip_info->gfx_chip_revision =
2151                                 CX700_REVISION_700M;
2152                 } else {
2153                         viaparinfo->chip_info->gfx_chip_revision =
2154                                 CX700_REVISION_700;
2155                 }
2156         }
2157
2158         /* Determine which 2D engine we have */
2159         switch (viaparinfo->chip_info->gfx_chip_name) {
2160         case UNICHROME_VX800:
2161         case UNICHROME_VX855:
2162         case UNICHROME_VX900:
2163                 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_M1;
2164                 break;
2165         case UNICHROME_K8M890:
2166         case UNICHROME_P4M900:
2167                 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H5;
2168                 break;
2169         default:
2170                 viaparinfo->chip_info->twod_engine = VIA_2D_ENG_H2;
2171                 break;
2172         }
2173 }
2174
2175 static void __devinit init_tmds_chip_info(void)
2176 {
2177         viafb_tmds_trasmitter_identify();
2178
2179         if (INTERFACE_NONE == viaparinfo->chip_info->tmds_chip_info.
2180                 output_interface) {
2181                 switch (viaparinfo->chip_info->gfx_chip_name) {
2182                 case UNICHROME_CX700:
2183                         {
2184                                 /* we should check support by hardware layout.*/
2185                                 if ((viafb_display_hardware_layout ==
2186                                      HW_LAYOUT_DVI_ONLY)
2187                                     || (viafb_display_hardware_layout ==
2188                                         HW_LAYOUT_LCD_DVI)) {
2189                                         viaparinfo->chip_info->tmds_chip_info.
2190                                             output_interface = INTERFACE_TMDS;
2191                                 } else {
2192                                         viaparinfo->chip_info->tmds_chip_info.
2193                                                 output_interface =
2194                                                 INTERFACE_NONE;
2195                                 }
2196                                 break;
2197                         }
2198                 case UNICHROME_K8M890:
2199                 case UNICHROME_P4M900:
2200                 case UNICHROME_P4M890:
2201                         /* TMDS on PCIE, we set DFPLOW as default. */
2202                         viaparinfo->chip_info->tmds_chip_info.output_interface =
2203                             INTERFACE_DFP_LOW;
2204                         break;
2205                 default:
2206                         {
2207                                 /* set DVP1 default for DVI */
2208                                 viaparinfo->chip_info->tmds_chip_info
2209                                 .output_interface = INTERFACE_DVP1;
2210                         }
2211                 }
2212         }
2213
2214         DEBUG_MSG(KERN_INFO "TMDS Chip = %d\n",
2215                   viaparinfo->chip_info->tmds_chip_info.tmds_chip_name);
2216         viafb_init_dvi_size(&viaparinfo->shared->chip_info.tmds_chip_info,
2217                 &viaparinfo->shared->tmds_setting_info);
2218 }
2219
2220 static void __devinit init_lvds_chip_info(void)
2221 {
2222         viafb_lvds_trasmitter_identify();
2223         viafb_init_lcd_size();
2224         viafb_init_lvds_output_interface(&viaparinfo->chip_info->lvds_chip_info,
2225                                    viaparinfo->lvds_setting_info);
2226         if (viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name) {
2227                 viafb_init_lvds_output_interface(&viaparinfo->chip_info->
2228                         lvds_chip_info2, viaparinfo->lvds_setting_info2);
2229         }
2230         /*If CX700,two singel LCD, we need to reassign
2231            LCD interface to different LVDS port */
2232         if ((UNICHROME_CX700 == viaparinfo->chip_info->gfx_chip_name)
2233             && (HW_LAYOUT_LCD1_LCD2 == viafb_display_hardware_layout)) {
2234                 if ((INTEGRATED_LVDS == viaparinfo->chip_info->lvds_chip_info.
2235                         lvds_chip_name) && (INTEGRATED_LVDS ==
2236                         viaparinfo->chip_info->
2237                         lvds_chip_info2.lvds_chip_name)) {
2238                         viaparinfo->chip_info->lvds_chip_info.output_interface =
2239                                 INTERFACE_LVDS0;
2240                         viaparinfo->chip_info->lvds_chip_info2.
2241                                 output_interface =
2242                             INTERFACE_LVDS1;
2243                 }
2244         }
2245
2246         DEBUG_MSG(KERN_INFO "LVDS Chip = %d\n",
2247                   viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
2248         DEBUG_MSG(KERN_INFO "LVDS1 output_interface = %d\n",
2249                   viaparinfo->chip_info->lvds_chip_info.output_interface);
2250         DEBUG_MSG(KERN_INFO "LVDS2 output_interface = %d\n",
2251                   viaparinfo->chip_info->lvds_chip_info.output_interface);
2252 }
2253
2254 void __devinit viafb_init_dac(int set_iga)
2255 {
2256         int i;
2257         u8 tmp;
2258
2259         if (set_iga == IGA1) {
2260                 /* access Primary Display's LUT */
2261                 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
2262                 /* turn off LCK */
2263                 viafb_write_reg_mask(SR1B, VIASR, 0x00, BIT7 + BIT6);
2264                 for (i = 0; i < 256; i++) {
2265                         write_dac_reg(i, palLUT_table[i].red,
2266                                       palLUT_table[i].green,
2267                                       palLUT_table[i].blue);
2268                 }
2269                 /* turn on LCK */
2270                 viafb_write_reg_mask(SR1B, VIASR, 0xC0, BIT7 + BIT6);
2271         } else {
2272                 tmp = viafb_read_reg(VIACR, CR6A);
2273                 /* access Secondary Display's LUT */
2274                 viafb_write_reg_mask(CR6A, VIACR, 0x40, BIT6);
2275                 viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
2276                 for (i = 0; i < 256; i++) {
2277                         write_dac_reg(i, palLUT_table[i].red,
2278                                       palLUT_table[i].green,
2279                                       palLUT_table[i].blue);
2280                 }
2281                 /* set IGA1 DAC for default */
2282                 viafb_write_reg_mask(SR1A, VIASR, 0x00, BIT0);
2283                 viafb_write_reg(CR6A, VIACR, tmp);
2284         }
2285 }
2286
2287 static void device_screen_off(void)
2288 {
2289         /* turn off CRT screen (IGA1) */
2290         viafb_write_reg_mask(SR01, VIASR, 0x20, BIT5);
2291 }
2292
2293 static void device_screen_on(void)
2294 {
2295         /* turn on CRT screen (IGA1) */
2296         viafb_write_reg_mask(SR01, VIASR, 0x00, BIT5);
2297 }
2298
2299 static void set_display_channel(void)
2300 {
2301         /*If viafb_LCD2_ON, on cx700, internal lvds's information
2302         is keeped on lvds_setting_info2 */
2303         if (viafb_LCD2_ON &&
2304                 viaparinfo->lvds_setting_info2->device_lcd_dualedge) {
2305                 /* For dual channel LCD: */
2306                 /* Set to Dual LVDS channel. */
2307                 viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
2308         } else if (viafb_LCD_ON && viafb_DVI_ON) {
2309                 /* For LCD+DFP: */
2310                 /* Set to LVDS1 + TMDS channel. */
2311                 viafb_write_reg_mask(CRD2, VIACR, 0x10, BIT4 + BIT5);
2312         } else if (viafb_DVI_ON) {
2313                 /* Set to single TMDS channel. */
2314                 viafb_write_reg_mask(CRD2, VIACR, 0x30, BIT4 + BIT5);
2315         } else if (viafb_LCD_ON) {
2316                 if (viaparinfo->lvds_setting_info->device_lcd_dualedge) {
2317                         /* For dual channel LCD: */
2318                         /* Set to Dual LVDS channel. */
2319                         viafb_write_reg_mask(CRD2, VIACR, 0x20, BIT4 + BIT5);
2320                 } else {
2321                         /* Set to LVDS0 + LVDS1 channel. */
2322                         viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT4 + BIT5);
2323                 }
2324         }
2325 }
2326
2327 static u8 get_sync(struct fb_info *info)
2328 {
2329         u8 polarity = 0;
2330
2331         if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
2332                 polarity |= VIA_HSYNC_NEGATIVE;
2333         if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
2334                 polarity |= VIA_VSYNC_NEGATIVE;
2335         return polarity;
2336 }
2337
2338 int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp,
2339         struct VideoModeTable *vmode_tbl1, int video_bpp1)
2340 {
2341         int i, j;
2342         int port;
2343         u32 devices = viaparinfo->shared->iga1_devices
2344                 | viaparinfo->shared->iga2_devices;
2345         u8 value, index, mask;
2346         struct crt_mode_table *crt_timing;
2347         struct crt_mode_table *crt_timing1 = NULL;
2348
2349         device_screen_off();
2350         crt_timing = vmode_tbl->crtc;
2351
2352         if (viafb_SAMM_ON == 1) {
2353                 crt_timing1 = vmode_tbl1->crtc;
2354         }
2355
2356         inb(VIAStatus);
2357         outb(0x00, VIAAR);
2358
2359         /* Write Common Setting for Video Mode */
2360         switch (viaparinfo->chip_info->gfx_chip_name) {
2361         case UNICHROME_CLE266:
2362                 viafb_write_regx(CLE266_ModeXregs, NUM_TOTAL_CLE266_ModeXregs);
2363                 break;
2364
2365         case UNICHROME_K400:
2366                 viafb_write_regx(KM400_ModeXregs, NUM_TOTAL_KM400_ModeXregs);
2367                 break;
2368
2369         case UNICHROME_K800:
2370         case UNICHROME_PM800:
2371                 viafb_write_regx(CN400_ModeXregs, NUM_TOTAL_CN400_ModeXregs);
2372                 break;
2373
2374         case UNICHROME_CN700:
2375         case UNICHROME_K8M890:
2376         case UNICHROME_P4M890:
2377         case UNICHROME_P4M900:
2378                 viafb_write_regx(CN700_ModeXregs, NUM_TOTAL_CN700_ModeXregs);
2379                 break;
2380
2381         case UNICHROME_CX700:
2382         case UNICHROME_VX800:
2383                 viafb_write_regx(CX700_ModeXregs, NUM_TOTAL_CX700_ModeXregs);
2384                 break;
2385
2386         case UNICHROME_VX855:
2387         case UNICHROME_VX900:
2388                 viafb_write_regx(VX855_ModeXregs, NUM_TOTAL_VX855_ModeXregs);
2389                 break;
2390         }
2391
2392         viafb_write_regx(scaling_parameters, ARRAY_SIZE(scaling_parameters));
2393         device_off();
2394         via_set_state(devices, VIA_STATE_OFF);
2395
2396         /* Fill VPIT Parameters */
2397         /* Write Misc Register */
2398         outb(VPIT.Misc, VIA_MISC_REG_WRITE);
2399
2400         /* Write Sequencer */
2401         for (i = 1; i <= StdSR; i++)
2402                 via_write_reg(VIASR, i, VPIT.SR[i - 1]);
2403
2404         viafb_write_reg_mask(0x15, VIASR, 0xA2, 0xA2);
2405
2406         /* Write CRTC */
2407         viafb_fill_crtc_timing(crt_timing, vmode_tbl, video_bpp / 8, IGA1);
2408
2409         /* Write Graphic Controller */
2410         for (i = 0; i < StdGR; i++)
2411                 via_write_reg(VIAGR, i, VPIT.GR[i]);
2412
2413         /* Write Attribute Controller */
2414         for (i = 0; i < StdAR; i++) {
2415                 inb(VIAStatus);
2416                 outb(i, VIAAR);
2417                 outb(VPIT.AR[i], VIAAR);
2418         }
2419
2420         inb(VIAStatus);
2421         outb(0x20, VIAAR);
2422
2423         /* Update Patch Register */
2424
2425         if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266
2426             || viaparinfo->chip_info->gfx_chip_name == UNICHROME_K400)
2427             && vmode_tbl->crtc[0].crtc.hor_addr == 1024
2428             && vmode_tbl->crtc[0].crtc.ver_addr == 768) {
2429                 for (j = 0; j < res_patch_table[0].table_length; j++) {
2430                         index = res_patch_table[0].io_reg_table[j].index;
2431                         port = res_patch_table[0].io_reg_table[j].port;
2432                         value = res_patch_table[0].io_reg_table[j].value;
2433                         mask = res_patch_table[0].io_reg_table[j].mask;
2434                         viafb_write_reg_mask(index, port, value, mask);
2435                 }
2436         }
2437
2438         via_set_primary_pitch(viafbinfo->fix.line_length);
2439         via_set_secondary_pitch(viafb_dual_fb ? viafbinfo1->fix.line_length
2440                 : viafbinfo->fix.line_length);
2441         via_set_primary_color_depth(viaparinfo->depth);
2442         via_set_secondary_color_depth(viafb_dual_fb ? viaparinfo1->depth
2443                 : viaparinfo->depth);
2444         via_set_source(viaparinfo->shared->iga1_devices, IGA1);
2445         via_set_source(viaparinfo->shared->iga2_devices, IGA2);
2446         if (viaparinfo->shared->iga2_devices)
2447                 enable_second_display_channel();
2448         else
2449                 disable_second_display_channel();
2450
2451         /* Update Refresh Rate Setting */
2452
2453         /* Clear On Screen */
2454
2455         /* CRT set mode */
2456         if (viafb_CRT_ON) {
2457                 if (viafb_SAMM_ON && (viaparinfo->crt_setting_info->iga_path ==
2458                         IGA2)) {
2459                         viafb_fill_crtc_timing(crt_timing1, vmode_tbl1,
2460                                 video_bpp1 / 8,
2461                                 viaparinfo->crt_setting_info->iga_path);
2462                 } else {
2463                         viafb_fill_crtc_timing(crt_timing, vmode_tbl,
2464                                 video_bpp / 8,
2465                                 viaparinfo->crt_setting_info->iga_path);
2466                 }
2467
2468                 /* Patch if set_hres is not 8 alignment (1366) to viafb_setmode
2469                 to 8 alignment (1368),there is several pixels (2 pixels)
2470                 on right side of screen. */
2471                 if (vmode_tbl->crtc[0].crtc.hor_addr % 8) {
2472                         viafb_unlock_crt();
2473                         viafb_write_reg(CR02, VIACR,
2474                                 viafb_read_reg(VIACR, CR02) - 1);
2475                         viafb_lock_crt();
2476                 }
2477         }
2478
2479         if (viafb_DVI_ON) {
2480                 if (viafb_SAMM_ON &&
2481                         (viaparinfo->tmds_setting_info->iga_path == IGA2)) {
2482                         viafb_dvi_set_mode(viafb_get_mode
2483                                      (viaparinfo->tmds_setting_info->h_active,
2484                                       viaparinfo->tmds_setting_info->
2485                                       v_active),
2486                                      video_bpp1, viaparinfo->
2487                                      tmds_setting_info->iga_path);
2488                 } else {
2489                         viafb_dvi_set_mode(viafb_get_mode
2490                                      (viaparinfo->tmds_setting_info->h_active,
2491                                       viaparinfo->
2492                                       tmds_setting_info->v_active),
2493                                      video_bpp, viaparinfo->
2494                                      tmds_setting_info->iga_path);
2495                 }
2496         }
2497
2498         if (viafb_LCD_ON) {
2499                 if (viafb_SAMM_ON &&
2500                         (viaparinfo->lvds_setting_info->iga_path == IGA2)) {
2501                         viaparinfo->lvds_setting_info->bpp = video_bpp1;
2502                         viafb_lcd_set_mode(crt_timing1, viaparinfo->
2503                                 lvds_setting_info,
2504                                      &viaparinfo->chip_info->lvds_chip_info);
2505                 } else {
2506                         /* IGA1 doesn't have LCD scaling, so set it center. */
2507                         if (viaparinfo->lvds_setting_info->iga_path == IGA1) {
2508                                 viaparinfo->lvds_setting_info->display_method =
2509                                     LCD_CENTERING;
2510                         }
2511                         viaparinfo->lvds_setting_info->bpp = video_bpp;
2512                         viafb_lcd_set_mode(crt_timing, viaparinfo->
2513                                 lvds_setting_info,
2514                                      &viaparinfo->chip_info->lvds_chip_info);
2515                 }
2516         }
2517         if (viafb_LCD2_ON) {
2518                 if (viafb_SAMM_ON &&
2519                         (viaparinfo->lvds_setting_info2->iga_path == IGA2)) {
2520                         viaparinfo->lvds_setting_info2->bpp = video_bpp1;
2521                         viafb_lcd_set_mode(crt_timing1, viaparinfo->
2522                                 lvds_setting_info2,
2523                                      &viaparinfo->chip_info->lvds_chip_info2);
2524                 } else {
2525                         /* IGA1 doesn't have LCD scaling, so set it center. */
2526                         if (viaparinfo->lvds_setting_info2->iga_path == IGA1) {
2527                                 viaparinfo->lvds_setting_info2->display_method =
2528                                     LCD_CENTERING;
2529                         }
2530                         viaparinfo->lvds_setting_info2->bpp = video_bpp;
2531                         viafb_lcd_set_mode(crt_timing, viaparinfo->
2532                                 lvds_setting_info2,
2533                                      &viaparinfo->chip_info->lvds_chip_info2);
2534                 }
2535         }
2536
2537         if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
2538             && (viafb_LCD_ON || viafb_DVI_ON))
2539                 set_display_channel();
2540
2541         /* If set mode normally, save resolution information for hot-plug . */
2542         if (!viafb_hotplug) {
2543                 viafb_hotplug_Xres = vmode_tbl->crtc[0].crtc.hor_addr;
2544                 viafb_hotplug_Yres = vmode_tbl->crtc[0].crtc.ver_addr;
2545                 viafb_hotplug_bpp = video_bpp;
2546                 viafb_hotplug_refresh = viafb_refresh;
2547
2548                 if (viafb_DVI_ON)
2549                         viafb_DeviceStatus = DVI_Device;
2550                 else
2551                         viafb_DeviceStatus = CRT_Device;
2552         }
2553         device_on();
2554         if (!viafb_dual_fb)
2555                 via_set_sync_polarity(devices, get_sync(viafbinfo));
2556         else {
2557                 via_set_sync_polarity(viaparinfo->shared->iga1_devices,
2558                         get_sync(viafbinfo));
2559                 via_set_sync_polarity(viaparinfo->shared->iga2_devices,
2560                         get_sync(viafbinfo1));
2561         }
2562
2563         via_set_state(devices, VIA_STATE_ON);
2564         device_screen_on();
2565         return 1;
2566 }
2567
2568 int viafb_get_pixclock(int hres, int vres, int vmode_refresh)
2569 {
2570         int i;
2571         struct crt_mode_table *best;
2572         struct VideoModeTable *vmode = viafb_get_mode(hres, vres);
2573
2574         if (!vmode)
2575                 return RES_640X480_60HZ_PIXCLOCK;
2576
2577         best = &vmode->crtc[0];
2578         for (i = 1; i < vmode->mode_array; i++) {
2579                 if (abs(vmode->crtc[i].refresh_rate - vmode_refresh)
2580                         < abs(best->refresh_rate - vmode_refresh))
2581                         best = &vmode->crtc[i];
2582         }
2583
2584         return 1000000000 / (best->crtc.hor_total * best->crtc.ver_total)
2585                 * 1000 / best->refresh_rate;
2586 }
2587
2588 int viafb_get_refresh(int hres, int vres, u32 long_refresh)
2589 {
2590         int i;
2591         struct crt_mode_table *best;
2592         struct VideoModeTable *vmode = viafb_get_mode(hres, vres);
2593
2594         if (!vmode)
2595                 return 60;
2596
2597         best = &vmode->crtc[0];
2598         for (i = 1; i < vmode->mode_array; i++) {
2599                 if (abs(vmode->crtc[i].refresh_rate - long_refresh)
2600                         < abs(best->refresh_rate - long_refresh))
2601                         best = &vmode->crtc[i];
2602         }
2603
2604         if (abs(best->refresh_rate - long_refresh) > 3)
2605                 return 60;
2606
2607         return best->refresh_rate;
2608 }
2609
2610 static void device_off(void)
2611 {
2612         viafb_dvi_disable();
2613         viafb_lcd_disable();
2614 }
2615
2616 static void device_on(void)
2617 {
2618         if (viafb_DVI_ON == 1)
2619                 viafb_dvi_enable();
2620         if (viafb_LCD_ON == 1)
2621                 viafb_lcd_enable();
2622 }
2623
2624 static void enable_second_display_channel(void)
2625 {
2626         /* to enable second display channel. */
2627         viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2628         viafb_write_reg_mask(CR6A, VIACR, BIT7, BIT7);
2629         viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2630 }
2631
2632 static void disable_second_display_channel(void)
2633 {
2634         /* to disable second display channel. */
2635         viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT6);
2636         viafb_write_reg_mask(CR6A, VIACR, 0x00, BIT7);
2637         viafb_write_reg_mask(CR6A, VIACR, BIT6, BIT6);
2638 }
2639
2640 void viafb_set_dpa_gfx(int output_interface, struct GFX_DPA_SETTING\
2641                                         *p_gfx_dpa_setting)
2642 {
2643         switch (output_interface) {
2644         case INTERFACE_DVP0:
2645                 {
2646                         /* DVP0 Clock Polarity and Adjust: */
2647                         viafb_write_reg_mask(CR96, VIACR,
2648                                        p_gfx_dpa_setting->DVP0, 0x0F);
2649
2650                         /* DVP0 Clock and Data Pads Driving: */
2651                         viafb_write_reg_mask(SR1E, VIASR,
2652                                        p_gfx_dpa_setting->DVP0ClockDri_S, BIT2);
2653                         viafb_write_reg_mask(SR2A, VIASR,
2654                                        p_gfx_dpa_setting->DVP0ClockDri_S1,
2655                                        BIT4);
2656                         viafb_write_reg_mask(SR1B, VIASR,
2657                                        p_gfx_dpa_setting->DVP0DataDri_S, BIT1);
2658                         viafb_write_reg_mask(SR2A, VIASR,
2659                                        p_gfx_dpa_setting->DVP0DataDri_S1, BIT5);
2660                         break;
2661                 }
2662
2663         case INTERFACE_DVP1:
2664                 {
2665                         /* DVP1 Clock Polarity and Adjust: */
2666                         viafb_write_reg_mask(CR9B, VIACR,
2667                                        p_gfx_dpa_setting->DVP1, 0x0F);
2668
2669                         /* DVP1 Clock and Data Pads Driving: */
2670                         viafb_write_reg_mask(SR65, VIASR,
2671                                        p_gfx_dpa_setting->DVP1Driving, 0x0F);
2672                         break;
2673                 }
2674
2675         case INTERFACE_DFP_HIGH:
2676                 {
2677                         viafb_write_reg_mask(CR97, VIACR,
2678                                        p_gfx_dpa_setting->DFPHigh, 0x0F);
2679                         break;
2680                 }
2681
2682         case INTERFACE_DFP_LOW:
2683                 {
2684                         viafb_write_reg_mask(CR99, VIACR,
2685                                        p_gfx_dpa_setting->DFPLow, 0x0F);
2686                         break;
2687                 }
2688
2689         case INTERFACE_DFP:
2690                 {
2691                         viafb_write_reg_mask(CR97, VIACR,
2692                                        p_gfx_dpa_setting->DFPHigh, 0x0F);
2693                         viafb_write_reg_mask(CR99, VIACR,
2694                                        p_gfx_dpa_setting->DFPLow, 0x0F);
2695                         break;
2696                 }
2697         }
2698 }
2699
2700 /*According var's xres, yres fill var's other timing information*/
2701 void viafb_fill_var_timing_info(struct fb_var_screeninfo *var, int refresh,
2702         struct VideoModeTable *vmode_tbl)
2703 {
2704         struct crt_mode_table *crt_timing = NULL;
2705         struct display_timing crt_reg;
2706         int i = 0, index = 0;
2707         crt_timing = vmode_tbl->crtc;
2708         for (i = 0; i < vmode_tbl->mode_array; i++) {
2709                 index = i;
2710                 if (crt_timing[i].refresh_rate == refresh)
2711                         break;
2712         }
2713
2714         crt_reg = crt_timing[index].crtc;
2715         var->pixclock = viafb_get_pixclock(var->xres, var->yres, refresh);
2716         var->left_margin =
2717             crt_reg.hor_total - (crt_reg.hor_sync_start + crt_reg.hor_sync_end);
2718         var->right_margin = crt_reg.hor_sync_start - crt_reg.hor_addr;
2719         var->hsync_len = crt_reg.hor_sync_end;
2720         var->upper_margin =
2721             crt_reg.ver_total - (crt_reg.ver_sync_start + crt_reg.ver_sync_end);
2722         var->lower_margin = crt_reg.ver_sync_start - crt_reg.ver_addr;
2723         var->vsync_len = crt_reg.ver_sync_end;
2724         var->sync = 0;
2725         if (crt_timing[index].h_sync_polarity == POSITIVE)
2726                 var->sync |= FB_SYNC_HOR_HIGH_ACT;
2727         if (crt_timing[index].v_sync_polarity == POSITIVE)
2728                 var->sync |= FB_SYNC_VERT_HIGH_ACT;
2729 }