drivers/video/via/lcd.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 "global.h"
  23 #include "lcdtbl.h"
  24
  25 static struct iga2_shadow_crtc_timing iga2_shadow_crtc_reg = {
  26         /* IGA2 Shadow Horizontal Total */
  27         {IGA2_SHADOW_HOR_TOTAL_REG_NUM, {{CR6D, 0, 7}, {CR71, 3, 3} } },
  28         /* IGA2 Shadow Horizontal Blank End */
  29         {IGA2_SHADOW_HOR_BLANK_END_REG_NUM, {{CR6E, 0, 7} } },
  30         /* IGA2 Shadow Vertical Total */
  31         {IGA2_SHADOW_VER_TOTAL_REG_NUM, {{CR6F, 0, 7}, {CR71, 0, 2} } },
  32         /* IGA2 Shadow Vertical Addressable Video */
  33         {IGA2_SHADOW_VER_ADDR_REG_NUM, {{CR70, 0, 7}, {CR71, 4, 6} } },
  34         /* IGA2 Shadow Vertical Blank Start */
  35         {IGA2_SHADOW_VER_BLANK_START_REG_NUM,
  36          {{CR72, 0, 7}, {CR74, 4, 6} } },
  37         /* IGA2 Shadow Vertical Blank End */
  38         {IGA2_SHADOW_VER_BLANK_END_REG_NUM, {{CR73, 0, 7}, {CR74, 0, 2} } },
  39         /* IGA2 Shadow Vertical Sync Start */
  40         {IGA2_SHADOW_VER_SYNC_START_REG_NUM, {{CR75, 0, 7}, {CR76, 4, 6} } },
  41         /* IGA2 Shadow Vertical Sync End */
  42         {IGA2_SHADOW_VER_SYNC_END_REG_NUM, {{CR76, 0, 3} } }
  43 };
  44
  45 static struct _lcd_scaling_factor lcd_scaling_factor = {
  46         /* LCD Horizontal Scaling Factor Register */
  47         {LCD_HOR_SCALING_FACTOR_REG_NUM,
  48          {{CR9F, 0, 1}, {CR77, 0, 7}, {CR79, 4, 5} } },
  49         /* LCD Vertical Scaling Factor Register */
  50         {LCD_VER_SCALING_FACTOR_REG_NUM,
  51          {{CR79, 3, 3}, {CR78, 0, 7}, {CR79, 6, 7} } }
  52 };
  53 static struct _lcd_scaling_factor lcd_scaling_factor_CLE = {
  54         /* LCD Horizontal Scaling Factor Register */
  55         {LCD_HOR_SCALING_FACTOR_REG_NUM_CLE, {{CR77, 0, 7}, {CR79, 4, 5} } },
  56         /* LCD Vertical Scaling Factor Register */
  57         {LCD_VER_SCALING_FACTOR_REG_NUM_CLE, {{CR78, 0, 7}, {CR79, 6, 7} } }
  58 };
  59
  60 static int check_lvds_chip(int device_id_subaddr, int device_id);
  61 static bool lvds_identify_integratedlvds(void);
  62 static int fp_id_to_vindex(int panel_id);
  63 static int lvds_register_read(int index);
  64 static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
  65                       int panel_vres);
  66 static void load_lcd_k400_patch_tbl(int set_hres, int set_vres,
  67         int panel_id);
  68 static void load_lcd_p880_patch_tbl(int set_hres, int set_vres,
  69         int panel_id);
  70 static void load_lcd_patch_regs(int set_hres, int set_vres,
  71         int panel_id, int set_iga);
  72 static void via_pitch_alignment_patch_lcd(
  73         struct lvds_setting_information *plvds_setting_info,
  74                                    struct lvds_chip_information
  75                                    *plvds_chip_info);
  76 static void lcd_patch_skew_dvp0(struct lvds_setting_information
  77                          *plvds_setting_info,
  78                          struct lvds_chip_information *plvds_chip_info);
  79 static void lcd_patch_skew_dvp1(struct lvds_setting_information
  80                          *plvds_setting_info,
  81                          struct lvds_chip_information *plvds_chip_info);
  82 static void lcd_patch_skew(struct lvds_setting_information
  83         *plvds_setting_info, struct lvds_chip_information *plvds_chip_info);
  84
  85 static void integrated_lvds_disable(struct lvds_setting_information
  86                              *plvds_setting_info,
  87                              struct lvds_chip_information *plvds_chip_info);
  88 static void integrated_lvds_enable(struct lvds_setting_information
  89                             *plvds_setting_info,
  90                             struct lvds_chip_information *plvds_chip_info);
  91 static void lcd_powersequence_off(void);
  92 static void lcd_powersequence_on(void);
  93 static void fill_lcd_format(void);
  94 static void check_diport_of_integrated_lvds(
  95         struct lvds_chip_information *plvds_chip_info,
  96                                      struct lvds_setting_information
  97                                      *plvds_setting_info);
  98 static struct display_timing lcd_centering_timging(struct display_timing
  99                                             mode_crt_reg,
 100                                            struct display_timing panel_crt_reg);
 101 static void load_crtc_shadow_timing(struct display_timing mode_timing,
 102                              struct display_timing panel_timing);
 103 static void viafb_load_scaling_factor_for_p4m900(int set_hres,
 104         int set_vres, int panel_hres, int panel_vres);
 105
 106 static int check_lvds_chip(int device_id_subaddr, int device_id)
 107 {
 108         if (lvds_register_read(device_id_subaddr) == device_id)
 109                 return OK;
 110         else
 111                 return FAIL;
 112 }
 113
 114 void viafb_init_lcd_size(void)
 115 {
 116         DEBUG_MSG(KERN_INFO "viafb_init_lcd_size()\n");
 117         DEBUG_MSG(KERN_INFO
 118                 "viaparinfo->lvds_setting_info->get_lcd_size_method %d\n",
 119                 viaparinfo->lvds_setting_info->get_lcd_size_method);
 120
 121         switch (viaparinfo->lvds_setting_info->get_lcd_size_method) {
 122         case GET_LCD_SIZE_BY_SYSTEM_BIOS:
 123                 break;
 124         case GET_LCD_SZIE_BY_HW_STRAPPING:
 125                 break;
 126         case GET_LCD_SIZE_BY_VGA_BIOS:
 127                 DEBUG_MSG(KERN_INFO "Get LCD Size method by VGA BIOS !!\n");
 128                 viaparinfo->lvds_setting_info->lcd_panel_size =
 129                     fp_id_to_vindex(viafb_lcd_panel_id);
 130                 DEBUG_MSG(KERN_INFO "LCD Panel_ID = %d\n",
 131                           viaparinfo->lvds_setting_info->lcd_panel_id);
 132                 DEBUG_MSG(KERN_INFO "LCD Panel Size = %d\n",
 133                           viaparinfo->lvds_setting_info->lcd_panel_size);
 134                 break;
 135         case GET_LCD_SIZE_BY_USER_SETTING:
 136                 DEBUG_MSG(KERN_INFO "Get LCD Size method by user setting !!\n");
 137                 viaparinfo->lvds_setting_info->lcd_panel_size =
 138                     fp_id_to_vindex(viafb_lcd_panel_id);
 139                 DEBUG_MSG(KERN_INFO "LCD Panel_ID = %d\n",
 140                           viaparinfo->lvds_setting_info->lcd_panel_id);
 141                 DEBUG_MSG(KERN_INFO "LCD Panel Size = %d\n",
 142                           viaparinfo->lvds_setting_info->lcd_panel_size);
 143                 break;
 144         default:
 145                 DEBUG_MSG(KERN_INFO "viafb_init_lcd_size fail\n");
 146                 viaparinfo->lvds_setting_info->lcd_panel_id =
 147                         LCD_PANEL_ID1_800X600;
 148                 viaparinfo->lvds_setting_info->lcd_panel_size =
 149                     fp_id_to_vindex(LCD_PANEL_ID1_800X600);
 150         }
 151         viaparinfo->lvds_setting_info2->lcd_panel_id =
 152                 viaparinfo->lvds_setting_info->lcd_panel_id;
 153         viaparinfo->lvds_setting_info2->lcd_panel_size =
 154                 viaparinfo->lvds_setting_info->lcd_panel_size;
 155         viaparinfo->lvds_setting_info2->lcd_panel_hres =
 156                 viaparinfo->lvds_setting_info->lcd_panel_hres;
 157         viaparinfo->lvds_setting_info2->lcd_panel_vres =
 158                 viaparinfo->lvds_setting_info->lcd_panel_vres;
 159         viaparinfo->lvds_setting_info2->device_lcd_dualedge =
 160             viaparinfo->lvds_setting_info->device_lcd_dualedge;
 161         viaparinfo->lvds_setting_info2->LCDDithering =
 162                 viaparinfo->lvds_setting_info->LCDDithering;
 163 }
 164
 165 static bool lvds_identify_integratedlvds(void)
 166 {
 167         if (viafb_display_hardware_layout == HW_LAYOUT_LCD_EXTERNAL_LCD2) {
 168                 /* Two dual channel LCD (Internal LVDS + External LVDS): */
 169                 /* If we have an external LVDS, such as VT1636, we should
 170                    have its chip ID already. */
 171                 if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
 172                         viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
 173                             INTEGRATED_LVDS;
 174                         DEBUG_MSG(KERN_INFO "Support two dual channel LVDS!\
 175                                   (Internal LVDS + External LVDS)\n");
 176                 } else {
 177                         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
 178                             INTEGRATED_LVDS;
 179                         DEBUG_MSG(KERN_INFO "Not found external LVDS,\
 180                                   so can't support two dual channel LVDS!\n");
 181                 }
 182         } else if (viafb_display_hardware_layout == HW_LAYOUT_LCD1_LCD2) {
 183                 /* Two single channel LCD (Internal LVDS + Internal LVDS): */
 184                 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
 185                 INTEGRATED_LVDS;
 186                 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
 187                         INTEGRATED_LVDS;
 188                 DEBUG_MSG(KERN_INFO "Support two single channel LVDS!\
 189                           (Internal LVDS + Internal LVDS)\n");
 190         } else if (viafb_display_hardware_layout != HW_LAYOUT_DVI_ONLY) {
 191                 /* If we have found external LVDS, just use it,
 192                    otherwise, we will use internal LVDS as default. */
 193                 if (!viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
 194                         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
 195                             INTEGRATED_LVDS;
 196                         DEBUG_MSG(KERN_INFO "Found Integrated LVDS!\n");
 197                 }
 198         } else {
 199                 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
 200                         NON_LVDS_TRANSMITTER;
 201                 DEBUG_MSG(KERN_INFO "Do not support LVDS!\n");
 202                 return false;
 203         }
 204
 205         return true;
 206 }
 207
 208 int viafb_lvds_trasmitter_identify(void)
 209 {
 210         viaparinfo->i2c_stuff.i2c_port = I2CPORTINDEX;
 211         if (viafb_lvds_identify_vt1636()) {
 212                 viaparinfo->chip_info->lvds_chip_info.i2c_port = I2CPORTINDEX;
 213                 DEBUG_MSG(KERN_INFO
 214                           "Found VIA VT1636 LVDS on port i2c 0x31 \n");
 215         } else {
 216                 viaparinfo->i2c_stuff.i2c_port = GPIOPORTINDEX;
 217                 if (viafb_lvds_identify_vt1636()) {
 218                         viaparinfo->chip_info->lvds_chip_info.i2c_port =
 219                                 GPIOPORTINDEX;
 220                         DEBUG_MSG(KERN_INFO
 221                                   "Found VIA VT1636 LVDS on port gpio 0x2c \n");
 222                 }
 223         }
 224
 225         if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
 226                 lvds_identify_integratedlvds();
 227
 228         if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
 229                 return true;
 230         /* Check for VT1631: */
 231         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = VT1631_LVDS;
 232         viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
 233                 VT1631_LVDS_I2C_ADDR;
 234
 235         if (check_lvds_chip(VT1631_DEVICE_ID_REG, VT1631_DEVICE_ID) != FAIL) {
 236                 DEBUG_MSG(KERN_INFO "\n VT1631 LVDS ! \n");
 237                 DEBUG_MSG(KERN_INFO "\n %2d",
 238                           viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
 239                 DEBUG_MSG(KERN_INFO "\n %2d",
 240                           viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
 241                 return OK;
 242         }
 243
 244         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
 245                 NON_LVDS_TRANSMITTER;
 246         viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
 247                 VT1631_LVDS_I2C_ADDR;
 248         return FAIL;
 249 }
 250
 251 static int fp_id_to_vindex(int panel_id)
 252 {
 253         DEBUG_MSG(KERN_INFO "fp_get_panel_id()\n");
 254
 255         if (panel_id > LCD_PANEL_ID_MAXIMUM)
 256                 viafb_lcd_panel_id = panel_id =
 257                 viafb_read_reg(VIACR, CR3F) & 0x0F;
 258
 259         switch (panel_id) {
 260         case 0x0:
 261                 viaparinfo->lvds_setting_info->lcd_panel_hres = 640;
 262                 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
 263                 viaparinfo->lvds_setting_info->lcd_panel_id =
 264                         LCD_PANEL_ID0_640X480;
 265                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 266                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 267                 return VIA_RES_640X480;
 268                 break;
 269         case 0x1:
 270                 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
 271                 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
 272                 viaparinfo->lvds_setting_info->lcd_panel_id =
 273                         LCD_PANEL_ID1_800X600;
 274                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 275                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 276                 return VIA_RES_800X600;
 277                 break;
 278         case 0x2:
 279                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
 280                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 281                 viaparinfo->lvds_setting_info->lcd_panel_id =
 282                         LCD_PANEL_ID2_1024X768;
 283                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 284                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 285                 return VIA_RES_1024X768;
 286                 break;
 287         case 0x3:
 288                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 289                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 290                 viaparinfo->lvds_setting_info->lcd_panel_id =
 291                         LCD_PANEL_ID3_1280X768;
 292                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 293                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 294                 return VIA_RES_1280X768;
 295                 break;
 296         case 0x4:
 297                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 298                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
 299                 viaparinfo->lvds_setting_info->lcd_panel_id =
 300                         LCD_PANEL_ID4_1280X1024;
 301                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 302                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 303                 return VIA_RES_1280X1024;
 304                 break;
 305         case 0x5:
 306                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
 307                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
 308                 viaparinfo->lvds_setting_info->lcd_panel_id =
 309                         LCD_PANEL_ID5_1400X1050;
 310                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 311                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 312                 return VIA_RES_1400X1050;
 313                 break;
 314         case 0x6:
 315                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
 316                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
 317                 viaparinfo->lvds_setting_info->lcd_panel_id =
 318                         LCD_PANEL_ID6_1600X1200;
 319                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 320                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 321                 return VIA_RES_1600X1200;
 322                 break;
 323         case 0x8:
 324                 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
 325                 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
 326                 viaparinfo->lvds_setting_info->lcd_panel_id =
 327                         LCD_PANEL_IDA_800X480;
 328                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 329                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 330                 return VIA_RES_800X480;
 331                 break;
 332         case 0x9:
 333                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
 334                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 335                 viaparinfo->lvds_setting_info->lcd_panel_id =
 336                         LCD_PANEL_ID2_1024X768;
 337                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 338                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 339                 return VIA_RES_1024X768;
 340                 break;
 341         case 0xA:
 342                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
 343                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 344                 viaparinfo->lvds_setting_info->lcd_panel_id =
 345                         LCD_PANEL_ID2_1024X768;
 346                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 347                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 348                 return VIA_RES_1024X768;
 349                 break;
 350         case 0xB:
 351                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
 352                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 353                 viaparinfo->lvds_setting_info->lcd_panel_id =
 354                         LCD_PANEL_ID2_1024X768;
 355                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 356                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 357                 return VIA_RES_1024X768;
 358                 break;
 359         case 0xC:
 360                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 361                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 362                 viaparinfo->lvds_setting_info->lcd_panel_id =
 363                         LCD_PANEL_ID3_1280X768;
 364                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 365                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 366                 return VIA_RES_1280X768;
 367                 break;
 368         case 0xD:
 369                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 370                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
 371                 viaparinfo->lvds_setting_info->lcd_panel_id =
 372                         LCD_PANEL_ID4_1280X1024;
 373                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 374                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 375                 return VIA_RES_1280X1024;
 376                 break;
 377         case 0xE:
 378                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
 379                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
 380                 viaparinfo->lvds_setting_info->lcd_panel_id =
 381                         LCD_PANEL_ID5_1400X1050;
 382                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 383                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 384                 return VIA_RES_1400X1050;
 385                 break;
 386         case 0xF:
 387                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
 388                 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
 389                 viaparinfo->lvds_setting_info->lcd_panel_id =
 390                         LCD_PANEL_ID6_1600X1200;
 391                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 392                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 393                 return VIA_RES_1600X1200;
 394                 break;
 395         case 0x10:
 396                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1366;
 397                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 398                 viaparinfo->lvds_setting_info->lcd_panel_id =
 399                         LCD_PANEL_ID7_1366X768;
 400                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 401                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 402                 return VIA_RES_1368X768;
 403                 break;
 404         case 0x11:
 405                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
 406                 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
 407                 viaparinfo->lvds_setting_info->lcd_panel_id =
 408                         LCD_PANEL_ID8_1024X600;
 409                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 410                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 411                 return VIA_RES_1024X600;
 412                 break;
 413         case 0x12:
 414                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 415                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 416                 viaparinfo->lvds_setting_info->lcd_panel_id =
 417                         LCD_PANEL_ID3_1280X768;
 418                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 419                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 420                 return VIA_RES_1280X768;
 421                 break;
 422         case 0x13:
 423                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 424                 viaparinfo->lvds_setting_info->lcd_panel_vres = 800;
 425                 viaparinfo->lvds_setting_info->lcd_panel_id =
 426                         LCD_PANEL_ID9_1280X800;
 427                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 428                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 429                 return VIA_RES_1280X800;
 430                 break;
 431         case 0x14:
 432                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1360;
 433                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 434                 viaparinfo->lvds_setting_info->lcd_panel_id =
 435                         LCD_PANEL_IDB_1360X768;
 436                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 437                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 438                 return VIA_RES_1360X768;
 439                 break;
 440         case 0x15:
 441                 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
 442                 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
 443                 viaparinfo->lvds_setting_info->lcd_panel_id =
 444                         LCD_PANEL_ID3_1280X768;
 445                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
 446                 viaparinfo->lvds_setting_info->LCDDithering = 0;
 447                 return VIA_RES_1280X768;
 448                 break;
 449         case 0x16:
 450                 viaparinfo->lvds_setting_info->lcd_panel_hres = 480;
 451                 viaparinfo->lvds_setting_info->lcd_panel_vres = 640;
 452                 viaparinfo->lvds_setting_info->lcd_panel_id =
 453                         LCD_PANEL_IDC_480X640;
 454                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 455                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 456                 return VIA_RES_480X640;
 457                 break;
 458         default:
 459                 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
 460                 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
 461                 viaparinfo->lvds_setting_info->lcd_panel_id =
 462                         LCD_PANEL_ID1_800X600;
 463                 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
 464                 viaparinfo->lvds_setting_info->LCDDithering = 1;
 465                 return VIA_RES_800X600;
 466         }
 467 }
 468
 469 static int lvds_register_read(int index)
 470 {
 471         u8 data;
 472
 473         viaparinfo->i2c_stuff.i2c_port = GPIOPORTINDEX;
 474         viafb_i2c_readbyte((u8) viaparinfo->chip_info->
 475             lvds_chip_info.lvds_chip_slave_addr,
 476                         (u8) index, &data);
 477         return data;
 478 }
 479
 480 static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
 481                       int panel_vres)
 482 {
 483         int reg_value = 0;
 484         int viafb_load_reg_num;
 485         struct io_register *reg = NULL;
 486
 487         DEBUG_MSG(KERN_INFO "load_lcd_scaling()!!\n");
 488
 489         /* LCD Scaling Enable */
 490         viafb_write_reg_mask(CR79, VIACR, 0x07, BIT0 + BIT1 + BIT2);
 491         if (UNICHROME_P4M900 == viaparinfo->chip_info->gfx_chip_name) {
 492                 viafb_load_scaling_factor_for_p4m900(set_hres, set_vres,
 493                                                panel_hres, panel_vres);
 494                 return;
 495         }
 496
 497         /* Check if expansion for horizontal */
 498         if (set_hres != panel_hres) {
 499                 /* Load Horizontal Scaling Factor */
 500                 switch (viaparinfo->chip_info->gfx_chip_name) {
 501                 case UNICHROME_CLE266:
 502                 case UNICHROME_K400:
 503                         reg_value =
 504                             CLE266_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
 505                         viafb_load_reg_num =
 506                             lcd_scaling_factor_CLE.lcd_hor_scaling_factor.
 507                             reg_num;
 508                         reg = lcd_scaling_factor_CLE.lcd_hor_scaling_factor.reg;
 509                         viafb_load_reg(reg_value,
 510                                 viafb_load_reg_num, reg, VIACR);
 511                         break;
 512                 case UNICHROME_K800:
 513                 case UNICHROME_PM800:
 514                 case UNICHROME_CN700:
 515                 case UNICHROME_CX700:
 516                 case UNICHROME_K8M890:
 517                 case UNICHROME_P4M890:
 518                         reg_value =
 519                             K800_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
 520                         /* Horizontal scaling enabled */
 521                         viafb_write_reg_mask(CRA2, VIACR, 0xC0, BIT7 + BIT6);
 522                         viafb_load_reg_num =
 523                             lcd_scaling_factor.lcd_hor_scaling_factor.reg_num;
 524                         reg = lcd_scaling_factor.lcd_hor_scaling_factor.reg;
 525                         viafb_load_reg(reg_value,
 526                                 viafb_load_reg_num, reg, VIACR);
 527                         break;
 528                 }
 529
 530                 DEBUG_MSG(KERN_INFO "Horizontal Scaling value = %d", reg_value);
 531         } else {
 532                 /* Horizontal scaling disabled */
 533                 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT7);
 534         }
 535
 536         /* Check if expansion for vertical */
 537         if (set_vres != panel_vres) {
 538                 /* Load Vertical Scaling Factor */
 539                 switch (viaparinfo->chip_info->gfx_chip_name) {
 540                 case UNICHROME_CLE266:
 541                 case UNICHROME_K400:
 542                         reg_value =
 543                             CLE266_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
 544                         viafb_load_reg_num =
 545                             lcd_scaling_factor_CLE.lcd_ver_scaling_factor.
 546                             reg_num;
 547                         reg = lcd_scaling_factor_CLE.lcd_ver_scaling_factor.reg;
 548                         viafb_load_reg(reg_value,
 549                                 viafb_load_reg_num, reg, VIACR);
 550                         break;
 551                 case UNICHROME_K800:
 552                 case UNICHROME_PM800:
 553                 case UNICHROME_CN700:
 554                 case UNICHROME_CX700:
 555                 case UNICHROME_K8M890:
 556                 case UNICHROME_P4M890:
 557                         reg_value =
 558                             K800_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
 559                         /* Vertical scaling enabled */
 560                         viafb_write_reg_mask(CRA2, VIACR, 0x08, BIT3);
 561                         viafb_load_reg_num =
 562                             lcd_scaling_factor.lcd_ver_scaling_factor.reg_num;
 563                         reg = lcd_scaling_factor.lcd_ver_scaling_factor.reg;
 564                         viafb_load_reg(reg_value,
 565                                 viafb_load_reg_num, reg, VIACR);
 566                         break;
 567                 }
 568
 569                 DEBUG_MSG(KERN_INFO "Vertical Scaling value = %d", reg_value);
 570         } else {
 571                 /* Vertical scaling disabled */
 572                 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT3);
 573         }
 574 }
 575
 576 static void load_lcd_k400_patch_tbl(int set_hres, int set_vres,
 577         int panel_id)
 578 {
 579         int vmode_index;
 580         int reg_num = 0;
 581         struct io_reg *lcd_patch_reg = NULL;
 582
 583         vmode_index = viafb_get_mode_index(set_hres, set_vres);
 584         switch (panel_id) {
 585                 /* LCD 800x600 */
 586         case LCD_PANEL_ID1_800X600:
 587                 switch (vmode_index) {
 588                 case VIA_RES_640X400:
 589                 case VIA_RES_640X480:
 590                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_8X6;
 591                         lcd_patch_reg = K400_LCD_RES_6X4_8X6;
 592                         break;
 593                 case VIA_RES_720X480:
 594                 case VIA_RES_720X576:
 595                         reg_num = NUM_TOTAL_K400_LCD_RES_7X4_8X6;
 596                         lcd_patch_reg = K400_LCD_RES_7X4_8X6;
 597                         break;
 598                 }
 599                 break;
 600
 601                 /* LCD 1024x768 */
 602         case LCD_PANEL_ID2_1024X768:
 603                 switch (vmode_index) {
 604                 case VIA_RES_640X400:
 605                 case VIA_RES_640X480:
 606                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_10X7;
 607                         lcd_patch_reg = K400_LCD_RES_6X4_10X7;
 608                         break;
 609                 case VIA_RES_720X480:
 610                 case VIA_RES_720X576:
 611                         reg_num = NUM_TOTAL_K400_LCD_RES_7X4_10X7;
 612                         lcd_patch_reg = K400_LCD_RES_7X4_10X7;
 613                         break;
 614                 case VIA_RES_800X600:
 615                         reg_num = NUM_TOTAL_K400_LCD_RES_8X6_10X7;
 616                         lcd_patch_reg = K400_LCD_RES_8X6_10X7;
 617                         break;
 618                 }
 619                 break;
 620
 621                 /* LCD 1280x1024 */
 622         case LCD_PANEL_ID4_1280X1024:
 623                 switch (vmode_index) {
 624                 case VIA_RES_640X400:
 625                 case VIA_RES_640X480:
 626                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_12X10;
 627                         lcd_patch_reg = K400_LCD_RES_6X4_12X10;
 628                         break;
 629                 case VIA_RES_720X480:
 630                 case VIA_RES_720X576:
 631                         reg_num = NUM_TOTAL_K400_LCD_RES_7X4_12X10;
 632                         lcd_patch_reg = K400_LCD_RES_7X4_12X10;
 633                         break;
 634                 case VIA_RES_800X600:
 635                         reg_num = NUM_TOTAL_K400_LCD_RES_8X6_12X10;
 636                         lcd_patch_reg = K400_LCD_RES_8X6_12X10;
 637                         break;
 638                 case VIA_RES_1024X768:
 639                         reg_num = NUM_TOTAL_K400_LCD_RES_10X7_12X10;
 640                         lcd_patch_reg = K400_LCD_RES_10X7_12X10;
 641                         break;
 642
 643                 }
 644                 break;
 645
 646                 /* LCD 1400x1050 */
 647         case LCD_PANEL_ID5_1400X1050:
 648                 switch (vmode_index) {
 649                 case VIA_RES_640X480:
 650                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_14X10;
 651                         lcd_patch_reg = K400_LCD_RES_6X4_14X10;
 652                         break;
 653                 case VIA_RES_800X600:
 654                         reg_num = NUM_TOTAL_K400_LCD_RES_8X6_14X10;
 655                         lcd_patch_reg = K400_LCD_RES_8X6_14X10;
 656                         break;
 657                 case VIA_RES_1024X768:
 658                         reg_num = NUM_TOTAL_K400_LCD_RES_10X7_14X10;
 659                         lcd_patch_reg = K400_LCD_RES_10X7_14X10;
 660                         break;
 661                 case VIA_RES_1280X768:
 662                 case VIA_RES_1280X800:
 663                 case VIA_RES_1280X960:
 664                 case VIA_RES_1280X1024:
 665                         reg_num = NUM_TOTAL_K400_LCD_RES_12X10_14X10;
 666                         lcd_patch_reg = K400_LCD_RES_12X10_14X10;
 667                         break;
 668                 }
 669                 break;
 670
 671                 /* LCD 1600x1200 */
 672         case LCD_PANEL_ID6_1600X1200:
 673                 switch (vmode_index) {
 674                 case VIA_RES_640X400:
 675                 case VIA_RES_640X480:
 676                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_16X12;
 677                         lcd_patch_reg = K400_LCD_RES_6X4_16X12;
 678                         break;
 679                 case VIA_RES_720X480:
 680                 case VIA_RES_720X576:
 681                         reg_num = NUM_TOTAL_K400_LCD_RES_7X4_16X12;
 682                         lcd_patch_reg = K400_LCD_RES_7X4_16X12;
 683                         break;
 684                 case VIA_RES_800X600:
 685                         reg_num = NUM_TOTAL_K400_LCD_RES_8X6_16X12;
 686                         lcd_patch_reg = K400_LCD_RES_8X6_16X12;
 687                         break;
 688                 case VIA_RES_1024X768:
 689                         reg_num = NUM_TOTAL_K400_LCD_RES_10X7_16X12;
 690                         lcd_patch_reg = K400_LCD_RES_10X7_16X12;
 691                         break;
 692                 case VIA_RES_1280X768:
 693                 case VIA_RES_1280X800:
 694                 case VIA_RES_1280X960:
 695                 case VIA_RES_1280X1024:
 696                         reg_num = NUM_TOTAL_K400_LCD_RES_12X10_16X12;
 697                         lcd_patch_reg = K400_LCD_RES_12X10_16X12;
 698                         break;
 699                 }
 700                 break;
 701
 702                 /* LCD 1366x768 */
 703         case LCD_PANEL_ID7_1366X768:
 704                 switch (vmode_index) {
 705                 case VIA_RES_640X480:
 706                         reg_num = NUM_TOTAL_K400_LCD_RES_6X4_1366X7;
 707                         lcd_patch_reg = K400_LCD_RES_6X4_1366X7;
 708                         break;
 709                 case VIA_RES_720X480:
 710                 case VIA_RES_720X576:
 711                         reg_num = NUM_TOTAL_K400_LCD_RES_7X4_1366X7;
 712                         lcd_patch_reg = K400_LCD_RES_7X4_1366X7;
 713                         break;
 714                 case VIA_RES_800X600:
 715                         reg_num = NUM_TOTAL_K400_LCD_RES_8X6_1366X7;
 716                         lcd_patch_reg = K400_LCD_RES_8X6_1366X7;
 717                         break;
 718                 case VIA_RES_1024X768:
 719                         reg_num = NUM_TOTAL_K400_LCD_RES_10X7_1366X7;
 720                         lcd_patch_reg = K400_LCD_RES_10X7_1366X7;
 721                         break;
 722                 case VIA_RES_1280X768:
 723                 case VIA_RES_1280X800:
 724                 case VIA_RES_1280X960:
 725                 case VIA_RES_1280X1024:
 726                         reg_num = NUM_TOTAL_K400_LCD_RES_12X10_1366X7;
 727                         lcd_patch_reg = K400_LCD_RES_12X10_1366X7;
 728                         break;
 729                 }
 730                 break;
 731
 732                 /* LCD 1360x768 */
 733         case LCD_PANEL_IDB_1360X768:
 734                 break;
 735         }
 736         if (reg_num != 0) {
 737                 /* H.W. Reset : ON */
 738                 viafb_write_reg_mask(CR17, VIACR, 0x00, BIT7);
 739
 740                 viafb_write_regx(lcd_patch_reg, reg_num);
 741
 742                 /* H.W. Reset : OFF */
 743                 viafb_write_reg_mask(CR17, VIACR, 0x80, BIT7);
 744
 745                 /* Reset PLL */
 746                 viafb_write_reg_mask(SR40, VIASR, 0x02, BIT1);
 747                 viafb_write_reg_mask(SR40, VIASR, 0x00, BIT1);
 748
 749                 /* Fire! */
 750                 outb(inb(VIARMisc) | (BIT2 + BIT3), VIAWMisc);
 751         }
 752 }
 753
 754 static void load_lcd_p880_patch_tbl(int set_hres, int set_vres,
 755         int panel_id)
 756 {
 757         int vmode_index;
 758         int reg_num = 0;
 759         struct io_reg *lcd_patch_reg = NULL;
 760
 761         vmode_index = viafb_get_mode_index(set_hres, set_vres);
 762
 763         switch (panel_id) {
 764         case LCD_PANEL_ID5_1400X1050:
 765                 switch (vmode_index) {
 766                 case VIA_RES_640X480:
 767                         reg_num = NUM_TOTAL_P880_LCD_RES_6X4_14X10;
 768                         lcd_patch_reg = P880_LCD_RES_6X4_14X10;
 769                         break;
 770                 case VIA_RES_800X600:
 771                         reg_num = NUM_TOTAL_P880_LCD_RES_8X6_14X10;
 772                         lcd_patch_reg = P880_LCD_RES_8X6_14X10;
 773                         break;
 774                 }
 775                 break;
 776         case LCD_PANEL_ID6_1600X1200:
 777                 switch (vmode_index) {
 778                 case VIA_RES_640X400:
 779                 case VIA_RES_640X480:
 780                         reg_num = NUM_TOTAL_P880_LCD_RES_6X4_16X12;
 781                         lcd_patch_reg = P880_LCD_RES_6X4_16X12;
 782                         break;
 783                 case VIA_RES_720X480:
 784                 case VIA_RES_720X576:
 785                         reg_num = NUM_TOTAL_P880_LCD_RES_7X4_16X12;
 786                         lcd_patch_reg = P880_LCD_RES_7X4_16X12;
 787                         break;
 788                 case VIA_RES_800X600:
 789                         reg_num = NUM_TOTAL_P880_LCD_RES_8X6_16X12;
 790                         lcd_patch_reg = P880_LCD_RES_8X6_16X12;
 791                         break;
 792                 case VIA_RES_1024X768:
 793                         reg_num = NUM_TOTAL_P880_LCD_RES_10X7_16X12;
 794                         lcd_patch_reg = P880_LCD_RES_10X7_16X12;
 795                         break;
 796                 case VIA_RES_1280X768:
 797                 case VIA_RES_1280X960:
 798                 case VIA_RES_1280X1024:
 799                         reg_num = NUM_TOTAL_P880_LCD_RES_12X10_16X12;
 800                         lcd_patch_reg = P880_LCD_RES_12X10_16X12;
 801                         break;
 802                 }
 803                 break;
 804
 805         }
 806         if (reg_num != 0) {
 807                 /* H.W. Reset : ON */
 808                 viafb_write_reg_mask(CR17, VIACR, 0x00, BIT7);
 809
 810                 viafb_write_regx(lcd_patch_reg, reg_num);
 811
 812                 /* H.W. Reset : OFF */
 813                 viafb_write_reg_mask(CR17, VIACR, 0x80, BIT7);
 814
 815                 /* Reset PLL */
 816                 viafb_write_reg_mask(SR40, VIASR, 0x02, BIT1);
 817                 viafb_write_reg_mask(SR40, VIASR, 0x00, BIT1);
 818
 819                 /* Fire! */
 820                 outb(inb(VIARMisc) | (BIT2 + BIT3), VIAWMisc);
 821         }
 822 }
 823
 824 static void load_lcd_patch_regs(int set_hres, int set_vres,
 825         int panel_id, int set_iga)
 826 {
 827         int vmode_index;
 828
 829         vmode_index = viafb_get_mode_index(set_hres, set_vres);
 830
 831         viafb_unlock_crt();
 832
 833         /* Patch for simultaneous & Expansion */
 834         if ((set_iga == IGA1_IGA2) &&
 835                 (viaparinfo->lvds_setting_info->display_method ==
 836             LCD_EXPANDSION)) {
 837                 switch (viaparinfo->chip_info->gfx_chip_name) {
 838                 case UNICHROME_CLE266:
 839                 case UNICHROME_K400:
 840                         load_lcd_k400_patch_tbl(set_hres, set_vres, panel_id);
 841                         break;
 842                 case UNICHROME_K800:
 843                         break;
 844                 case UNICHROME_PM800:
 845                 case UNICHROME_CN700:
 846                 case UNICHROME_CX700:
 847                         load_lcd_p880_patch_tbl(set_hres, set_vres, panel_id);
 848                 }
 849         }
 850
 851         viafb_lock_crt();
 852 }
 853
 854 static void via_pitch_alignment_patch_lcd(
 855         struct lvds_setting_information *plvds_setting_info,
 856                                    struct lvds_chip_information
 857                                    *plvds_chip_info)
 858 {
 859         unsigned char cr13, cr35, cr65, cr66, cr67;
 860         unsigned long dwScreenPitch = 0;
 861         unsigned long dwPitch;
 862
 863         dwPitch = plvds_setting_info->h_active * (plvds_setting_info->bpp >> 3);
 864         if (dwPitch & 0x1F) {
 865                 dwScreenPitch = ((dwPitch + 31) & ~31) >> 3;
 866                 if (plvds_setting_info->iga_path == IGA2) {
 867                         if (plvds_setting_info->bpp > 8) {
 868                                 cr66 = (unsigned char)(dwScreenPitch & 0xFF);
 869                                 viafb_write_reg(CR66, VIACR, cr66);
 870                                 cr67 = viafb_read_reg(VIACR, CR67) & 0xFC;
 871                                 cr67 |=
 872                                     (unsigned
 873                                      char)((dwScreenPitch & 0x300) >> 8);
 874                                 viafb_write_reg(CR67, VIACR, cr67);
 875                         }
 876
 877                         /* Fetch Count */
 878                         cr67 = viafb_read_reg(VIACR, CR67) & 0xF3;
 879                         cr67 |= (unsigned char)((dwScreenPitch & 0x600) >> 7);
 880                         viafb_write_reg(CR67, VIACR, cr67);
 881                         cr65 = (unsigned char)((dwScreenPitch >> 1) & 0xFF);
 882                         cr65 += 2;
 883                         viafb_write_reg(CR65, VIACR, cr65);
 884                 } else {
 885                         if (plvds_setting_info->bpp > 8) {
 886                                 cr13 = (unsigned char)(dwScreenPitch & 0xFF);
 887                                 viafb_write_reg(CR13, VIACR, cr13);
 888                                 cr35 = viafb_read_reg(VIACR, CR35) & 0x1F;
 889                                 cr35 |=
 890                                     (unsigned
 891                                      char)((dwScreenPitch & 0x700) >> 3);
 892                                 viafb_write_reg(CR35, VIACR, cr35);
 893                         }
 894                 }
 895         }
 896 }
 897 static void lcd_patch_skew_dvp0(struct lvds_setting_information
 898                          *plvds_setting_info,
 899                          struct lvds_chip_information *plvds_chip_info)
 900 {
 901         if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
 902                 switch (viaparinfo->chip_info->gfx_chip_name) {
 903                 case UNICHROME_P4M900:
 904                         viafb_vt1636_patch_skew_on_vt3364(plvds_setting_info,
 905                                                     plvds_chip_info);
 906                         break;
 907                 case UNICHROME_P4M890:
 908                         viafb_vt1636_patch_skew_on_vt3327(plvds_setting_info,
 909                                                     plvds_chip_info);
 910                         break;
 911                 }
 912         }
 913 }
 914 static void lcd_patch_skew_dvp1(struct lvds_setting_information
 915                          *plvds_setting_info,
 916                          struct lvds_chip_information *plvds_chip_info)
 917 {
 918         if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
 919                 switch (viaparinfo->chip_info->gfx_chip_name) {
 920                 case UNICHROME_CX700:
 921                         viafb_vt1636_patch_skew_on_vt3324(plvds_setting_info,
 922                                                     plvds_chip_info);
 923                         break;
 924                 }
 925         }
 926 }
 927 static void lcd_patch_skew(struct lvds_setting_information
 928         *plvds_setting_info, struct lvds_chip_information *plvds_chip_info)
 929 {
 930         DEBUG_MSG(KERN_INFO "lcd_patch_skew\n");
 931         switch (plvds_chip_info->output_interface) {
 932         case INTERFACE_DVP0:
 933                 lcd_patch_skew_dvp0(plvds_setting_info, plvds_chip_info);
 934                 break;
 935         case INTERFACE_DVP1:
 936                 lcd_patch_skew_dvp1(plvds_setting_info, plvds_chip_info);
 937                 break;
 938         case INTERFACE_DFP_LOW:
 939                 if (UNICHROME_P4M900 == viaparinfo->chip_info->gfx_chip_name) {
 940                         viafb_write_reg_mask(CR99, VIACR, 0x08,
 941                                        BIT0 + BIT1 + BIT2 + BIT3);
 942                 }
 943                 break;
 944         }
 945 }
 946
 947 /* LCD Set Mode */
 948 void viafb_lcd_set_mode(struct crt_mode_table *mode_crt_table,
 949                   struct lvds_setting_information *plvds_setting_info,
 950                   struct lvds_chip_information *plvds_chip_info)
 951 {
 952         int video_index = plvds_setting_info->lcd_panel_size;
 953         int set_iga = plvds_setting_info->iga_path;
 954         int mode_bpp = plvds_setting_info->bpp;
 955         int viafb_load_reg_num = 0;
 956         int reg_value = 0;
 957         int set_hres, set_vres;
 958         int panel_hres, panel_vres;
 959         u32 pll_D_N;
 960         int offset;
 961         struct io_register *reg = NULL;
 962         struct display_timing mode_crt_reg, panel_crt_reg;
 963         struct crt_mode_table *panel_crt_table = NULL;
 964         struct VideoModeTable *vmode_tbl = NULL;
 965
 966         DEBUG_MSG(KERN_INFO "viafb_lcd_set_mode!!\n");
 967         /* Get mode table */
 968         mode_crt_reg = mode_crt_table->crtc;
 969         /* Get panel table Pointer */
 970         vmode_tbl = viafb_get_modetbl_pointer(video_index);
 971         panel_crt_table = vmode_tbl->crtc;
 972         panel_crt_reg = panel_crt_table->crtc;
 973         DEBUG_MSG(KERN_INFO "bellow viafb_lcd_set_mode!!\n");
 974         set_hres = plvds_setting_info->h_active;
 975         set_vres = plvds_setting_info->v_active;
 976         panel_hres = plvds_setting_info->lcd_panel_hres;
 977         panel_vres = plvds_setting_info->lcd_panel_vres;
 978         if (VT1636_LVDS == plvds_chip_info->lvds_chip_name)
 979                 viafb_init_lvds_vt1636(plvds_setting_info, plvds_chip_info);
 980         plvds_setting_info->vclk = panel_crt_table->clk;
 981         if (set_iga == IGA1) {
 982                 /* IGA1 doesn't have LCD scaling, so set it as centering. */
 983                 viafb_load_crtc_timing(lcd_centering_timging
 984                                  (mode_crt_reg, panel_crt_reg), IGA1);
 985         } else {
 986                 /* Expansion */
 987                 if ((plvds_setting_info->display_method ==
 988                      LCD_EXPANDSION) & ((set_hres != panel_hres)
 989                                         || (set_vres != panel_vres))) {
 990                         /* expansion timing IGA2 loaded panel set timing*/
 991                         viafb_load_crtc_timing(panel_crt_reg, IGA2);
 992                         DEBUG_MSG(KERN_INFO "viafb_load_crtc_timing!!\n");
 993                         load_lcd_scaling(set_hres, set_vres, panel_hres,
 994                                          panel_vres);
 995                         DEBUG_MSG(KERN_INFO "load_lcd_scaling!!\n");
 996                 } else {        /* Centering */
 997                         /* centering timing IGA2 always loaded panel
 998                            and mode releative timing */
 999                         viafb_load_crtc_timing(lcd_centering_timging
1000                                          (mode_crt_reg, panel_crt_reg), IGA2);
1001                         viafb_write_reg_mask(CR79, VIACR, 0x00,
1002                                 BIT0 + BIT1 + BIT2);
1003                         /* LCD scaling disabled */
1004                 }
1005         }
1006
1007         if (set_iga == IGA1_IGA2) {
1008                 load_crtc_shadow_timing(mode_crt_reg, panel_crt_reg);
1009                 /* Fill shadow registers */
1010
1011                 switch (plvds_setting_info->lcd_panel_id) {
1012                 case LCD_PANEL_ID0_640X480:
1013                         offset = 80;
1014                         break;
1015                 case LCD_PANEL_ID1_800X600:
1016                 case LCD_PANEL_IDA_800X480:
1017                         offset = 110;
1018                         break;
1019                 case LCD_PANEL_ID2_1024X768:
1020                         offset = 150;
1021                         break;
1022                 case LCD_PANEL_ID3_1280X768:
1023                 case LCD_PANEL_ID4_1280X1024:
1024                 case LCD_PANEL_ID5_1400X1050:
1025                 case LCD_PANEL_ID9_1280X800:
1026                         offset = 190;
1027                         break;
1028                 case LCD_PANEL_ID6_1600X1200:
1029                         offset = 250;
1030                         break;
1031                 case LCD_PANEL_ID7_1366X768:
1032                 case LCD_PANEL_IDB_1360X768:
1033                         offset = 212;
1034                         break;
1035                 default:
1036                         offset = 140;
1037                         break;
1038                 }
1039
1040                 /* Offset for simultaneous */
1041                 reg_value = offset;
1042                 viafb_load_reg_num = offset_reg.iga2_offset_reg.reg_num;
1043                 reg = offset_reg.iga2_offset_reg.reg;
1044                 viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
1045                 DEBUG_MSG(KERN_INFO "viafb_load_reg!!\n");
1046                 viafb_load_fetch_count_reg(set_hres, 4, IGA2);
1047                 /* Fetch count for simultaneous */
1048         } else {                /* SAMM */
1049                 /* Offset for IGA2 only */
1050                 viafb_load_offset_reg(set_hres, mode_bpp / 8, set_iga);
1051                 /* Fetch count for IGA2 only */
1052                 viafb_load_fetch_count_reg(set_hres, mode_bpp / 8, set_iga);
1053
1054                 if ((viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
1055                     && (viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400))
1056                         viafb_load_FIFO_reg(set_iga, set_hres, set_vres);
1057
1058                 viafb_set_color_depth(mode_bpp / 8, set_iga);
1059         }
1060
1061         fill_lcd_format();
1062
1063         pll_D_N = viafb_get_clk_value(panel_crt_table[0].clk);
1064         DEBUG_MSG(KERN_INFO "PLL=0x%x", pll_D_N);
1065         viafb_set_vclock(pll_D_N, set_iga);
1066
1067         viafb_set_output_path(DEVICE_LCD, set_iga,
1068                 plvds_chip_info->output_interface);
1069         lcd_patch_skew(plvds_setting_info, plvds_chip_info);
1070
1071         /* If K8M800, enable LCD Prefetch Mode. */
1072         if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
1073             || (UNICHROME_K8M890 == viaparinfo->chip_info->gfx_chip_name))
1074                 viafb_write_reg_mask(CR6A, VIACR, 0x01, BIT0);
1075
1076         load_lcd_patch_regs(set_hres, set_vres,
1077                             plvds_setting_info->lcd_panel_id, set_iga);
1078
1079         DEBUG_MSG(KERN_INFO "load_lcd_patch_regs!!\n");
1080
1081         /* Patch for non 32bit alignment mode */
1082         via_pitch_alignment_patch_lcd(plvds_setting_info, plvds_chip_info);
1083 }
1084
1085 static void integrated_lvds_disable(struct lvds_setting_information
1086                              *plvds_setting_info,
1087                              struct lvds_chip_information *plvds_chip_info)
1088 {
1089         bool turn_off_first_powersequence = false;
1090         bool turn_off_second_powersequence = false;
1091         if (INTERFACE_LVDS0LVDS1 == plvds_chip_info->output_interface)
1092                 turn_off_first_powersequence = true;
1093         if (INTERFACE_LVDS0 == plvds_chip_info->output_interface)
1094                 turn_off_first_powersequence = true;
1095         if (INTERFACE_LVDS1 == plvds_chip_info->output_interface)
1096                 turn_off_second_powersequence = true;
1097         if (turn_off_second_powersequence) {
1098                 /* Use second power sequence control: */
1099
1100                 /* Turn off power sequence. */
1101                 viafb_write_reg_mask(CRD4, VIACR, 0, BIT1);
1102
1103                 /* Turn off back light. */
1104                 viafb_write_reg_mask(CRD3, VIACR, 0xC0, BIT6 + BIT7);
1105         }
1106         if (turn_off_first_powersequence) {
1107                 /* Use first power sequence control: */
1108
1109                 /* Turn off power sequence. */
1110                 viafb_write_reg_mask(CR6A, VIACR, 0, BIT3);
1111
1112                 /* Turn off back light. */
1113                 viafb_write_reg_mask(CR91, VIACR, 0xC0, BIT6 + BIT7);
1114         }
1115
1116         /* Turn DFP High/Low Pad off. */
1117         viafb_write_reg_mask(SR2A, VIASR, 0, BIT0 + BIT1 + BIT2 + BIT3);
1118
1119         /* Power off LVDS channel. */
1120         switch (plvds_chip_info->output_interface) {
1121         case INTERFACE_LVDS0:
1122                 {
1123                         viafb_write_reg_mask(CRD2, VIACR, 0x80, BIT7);
1124                         break;
1125                 }
1126
1127         case INTERFACE_LVDS1:
1128                 {
1129                         viafb_write_reg_mask(CRD2, VIACR, 0x40, BIT6);
1130                         break;
1131                 }
1132
1133         case INTERFACE_LVDS0LVDS1:
1134                 {
1135                         viafb_write_reg_mask(CRD2, VIACR, 0xC0, BIT6 + BIT7);
1136                         break;
1137                 }
1138         }
1139 }
1140
1141 static void integrated_lvds_enable(struct lvds_setting_information
1142                             *plvds_setting_info,
1143                             struct lvds_chip_information *plvds_chip_info)
1144 {
1145         bool turn_on_first_powersequence = false;
1146         bool turn_on_second_powersequence = false;
1147
1148         DEBUG_MSG(KERN_INFO "integrated_lvds_enable, out_interface:%d\n",
1149                   plvds_chip_info->output_interface);
1150         if (plvds_setting_info->lcd_mode == LCD_SPWG)
1151                 viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT0 + BIT1);
1152          else
1153                 viafb_write_reg_mask(CRD2, VIACR, 0x03, BIT0 + BIT1);
1154         if (INTERFACE_LVDS0LVDS1 == plvds_chip_info->output_interface)
1155                 turn_on_first_powersequence = true;
1156         if (INTERFACE_LVDS0 == plvds_chip_info->output_interface)
1157                 turn_on_first_powersequence = true;
1158         if (INTERFACE_LVDS1 == plvds_chip_info->output_interface)
1159                 turn_on_second_powersequence = true;
1160
1161         if (turn_on_second_powersequence) {
1162                 /* Use second power sequence control: */
1163
1164                 /* Use hardware control power sequence. */
1165                 viafb_write_reg_mask(CRD3, VIACR, 0, BIT0);
1166
1167                 /* Turn on back light. */
1168                 viafb_write_reg_mask(CRD3, VIACR, 0, BIT6 + BIT7);
1169
1170                 /* Turn on hardware power sequence. */
1171                 viafb_write_reg_mask(CRD4, VIACR, 0x02, BIT1);
1172         }
1173         if (turn_on_first_powersequence) {
1174                 /* Use first power sequence control: */
1175
1176                 /* Use hardware control power sequence. */
1177                 viafb_write_reg_mask(CR91, VIACR, 0, BIT0);
1178
1179                 /* Turn on back light. */
1180                 viafb_write_reg_mask(CR91, VIACR, 0, BIT6 + BIT7);
1181
1182                 /* Turn on hardware power sequence. */
1183                 viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
1184         }
1185
1186         /* Turn DFP High/Low pad on. */
1187         viafb_write_reg_mask(SR2A, VIASR, 0x0F, BIT0 + BIT1 + BIT2 + BIT3);
1188
1189         /* Power on LVDS channel. */
1190         switch (plvds_chip_info->output_interface) {
1191         case INTERFACE_LVDS0:
1192                 {
1193                         viafb_write_reg_mask(CRD2, VIACR, 0, BIT7);
1194                         break;
1195                 }
1196
1197         case INTERFACE_LVDS1:
1198                 {
1199                         viafb_write_reg_mask(CRD2, VIACR, 0, BIT6);
1200                         break;
1201                 }
1202
1203         case INTERFACE_LVDS0LVDS1:
1204                 {
1205                         viafb_write_reg_mask(CRD2, VIACR, 0, BIT6 + BIT7);
1206                         break;
1207                 }
1208         }
1209 }
1210
1211 void viafb_lcd_disable(void)
1212 {
1213
1214         if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
1215                 lcd_powersequence_off();
1216                 /* DI1 pad off */
1217                 viafb_write_reg_mask(SR1E, VIASR, 0x00, 0x30);
1218         } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1219                 if (viafb_LCD2_ON
1220                     && (INTEGRATED_LVDS ==
1221                         viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
1222                         integrated_lvds_disable(viaparinfo->lvds_setting_info,
1223                                 &viaparinfo->chip_info->lvds_chip_info2);
1224                 if (INTEGRATED_LVDS ==
1225                         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
1226                         integrated_lvds_disable(viaparinfo->lvds_setting_info,
1227                                 &viaparinfo->chip_info->lvds_chip_info);
1228                 if (VT1636_LVDS == viaparinfo->chip_info->
1229                         lvds_chip_info.lvds_chip_name)
1230                         viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
1231                                 &viaparinfo->chip_info->lvds_chip_info);
1232         } else if (VT1636_LVDS ==
1233         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
1234                 viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
1235                                     &viaparinfo->chip_info->lvds_chip_info);
1236         } else {
1237                 /* DFP-HL pad off          */
1238                 viafb_write_reg_mask(SR2A, VIASR, 0x00, 0x0F);
1239                 /* Backlight off           */
1240                 viafb_write_reg_mask(SR3D, VIASR, 0x00, 0x20);
1241                 /* 24 bit DI data paht off */
1242                 viafb_write_reg_mask(CR91, VIACR, 0x80, 0x80);
1243                 /* Simultaneout disabled   */
1244                 viafb_write_reg_mask(CR6B, VIACR, 0x00, 0x08);
1245         }
1246
1247         /* Disable expansion bit   */
1248         viafb_write_reg_mask(CR79, VIACR, 0x00, 0x01);
1249         /* CRT path set to IGA1    */
1250         viafb_write_reg_mask(SR16, VIASR, 0x00, 0x40);
1251         /* Simultaneout disabled   */
1252         viafb_write_reg_mask(CR6B, VIACR, 0x00, 0x08);
1253         /* IGA2 path disabled      */
1254         viafb_write_reg_mask(CR6A, VIACR, 0x00, 0x80);
1255
1256 }
1257
1258 void viafb_lcd_enable(void)
1259 {
1260         if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
1261                 /* DI1 pad on */
1262                 viafb_write_reg_mask(SR1E, VIASR, 0x30, 0x30);
1263                 lcd_powersequence_on();
1264         } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
1265                 if (viafb_LCD2_ON && (INTEGRATED_LVDS ==
1266                         viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
1267                         integrated_lvds_enable(viaparinfo->lvds_setting_info2, \
1268                                 &viaparinfo->chip_info->lvds_chip_info2);
1269                 if (INTEGRATED_LVDS ==
1270                         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
1271                         integrated_lvds_enable(viaparinfo->lvds_setting_info,
1272                                 &viaparinfo->chip_info->lvds_chip_info);
1273                 if (VT1636_LVDS == viaparinfo->chip_info->
1274                         lvds_chip_info.lvds_chip_name)
1275                         viafb_enable_lvds_vt1636(viaparinfo->
1276                         lvds_setting_info, &viaparinfo->chip_info->
1277                         lvds_chip_info);
1278         } else if (VT1636_LVDS ==
1279         viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
1280                 viafb_enable_lvds_vt1636(viaparinfo->lvds_setting_info,
1281                                    &viaparinfo->chip_info->lvds_chip_info);
1282         } else {
1283                 /* DFP-HL pad on           */
1284                 viafb_write_reg_mask(SR2A, VIASR, 0x0F, 0x0F);
1285                 /* Backlight on            */
1286                 viafb_write_reg_mask(SR3D, VIASR, 0x20, 0x20);
1287                 /* 24 bit DI data paht on  */
1288                 viafb_write_reg_mask(CR91, VIACR, 0x00, 0x80);
1289
1290                 /* Set data source selection bit by iga path */
1291                 if (viaparinfo->lvds_setting_info->iga_path == IGA1) {
1292                         /* DFP-H set to IGA1       */
1293                         viafb_write_reg_mask(CR97, VIACR, 0x00, 0x10);
1294                         /* DFP-L set to IGA1       */
1295                         viafb_write_reg_mask(CR99, VIACR, 0x00, 0x10);
1296                 } else {
1297                         /* DFP-H set to IGA2       */
1298                         viafb_write_reg_mask(CR97, VIACR, 0x10, 0x10);
1299                         /* DFP-L set to IGA2       */
1300                         viafb_write_reg_mask(CR99, VIACR, 0x10, 0x10);
1301                 }
1302                 /* LCD enabled             */
1303                 viafb_write_reg_mask(CR6A, VIACR, 0x48, 0x48);
1304         }
1305
1306         if ((viaparinfo->lvds_setting_info->iga_path == IGA1)
1307             || (viaparinfo->lvds_setting_info->iga_path == IGA1_IGA2)) {
1308                 /* CRT path set to IGA2    */
1309                 viafb_write_reg_mask(SR16, VIASR, 0x40, 0x40);
1310                 /* IGA2 path disabled      */
1311                 viafb_write_reg_mask(CR6A, VIACR, 0x00, 0x80);
1312                 /* IGA2 path enabled       */
1313         } else {                /* IGA2 */
1314                 viafb_write_reg_mask(CR6A, VIACR, 0x80, 0x80);
1315         }
1316
1317 }
1318
1319 static void lcd_powersequence_off(void)
1320 {
1321         int i, mask, data;
1322
1323         /* Software control power sequence */
1324         viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
1325
1326         for (i = 0; i < 3; i++) {
1327                 mask = PowerSequenceOff[0][i];
1328                 data = PowerSequenceOff[1][i] & mask;
1329                 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
1330                 udelay(PowerSequenceOff[2][i]);
1331         }
1332
1333         /* Disable LCD */
1334         viafb_write_reg_mask(CR6A, VIACR, 0x00, 0x08);
1335 }
1336
1337 static void lcd_powersequence_on(void)
1338 {
1339         int i, mask, data;
1340
1341         /* Software control power sequence */
1342         viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
1343
1344         /* Enable LCD */
1345         viafb_write_reg_mask(CR6A, VIACR, 0x08, 0x08);
1346
1347         for (i = 0; i < 3; i++) {
1348                 mask = PowerSequenceOn[0][i];
1349                 data = PowerSequenceOn[1][i] & mask;
1350                 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
1351                 udelay(PowerSequenceOn[2][i]);
1352         }
1353
1354         udelay(1);
1355 }
1356
1357 static void fill_lcd_format(void)
1358 {
1359         u8 bdithering = 0, bdual = 0;
1360
1361         if (viaparinfo->lvds_setting_info->device_lcd_dualedge)
1362                 bdual = BIT4;
1363         if (viaparinfo->lvds_setting_info->LCDDithering)
1364                 bdithering = BIT0;
1365         /* Dual & Dithering */
1366         viafb_write_reg_mask(CR88, VIACR, (bdithering | bdual), BIT4 + BIT0);
1367 }
1368
1369 static void check_diport_of_integrated_lvds(
1370         struct lvds_chip_information *plvds_chip_info,
1371                                      struct lvds_setting_information
1372                                      *plvds_setting_info)
1373 {
1374         /* Determine LCD DI Port by hardware layout. */
1375         switch (viafb_display_hardware_layout) {
1376         case HW_LAYOUT_LCD_ONLY:
1377                 {
1378                         if (plvds_setting_info->device_lcd_dualedge) {
1379                                 plvds_chip_info->output_interface =
1380                                     INTERFACE_LVDS0LVDS1;
1381                         } else {
1382                                 plvds_chip_info->output_interface =
1383                                     INTERFACE_LVDS0;
1384                         }
1385
1386                         break;
1387                 }
1388
1389         case HW_LAYOUT_DVI_ONLY:
1390                 {
1391                         plvds_chip_info->output_interface = INTERFACE_NONE;
1392                         break;
1393                 }
1394
1395         case HW_LAYOUT_LCD1_LCD2:
1396         case HW_LAYOUT_LCD_EXTERNAL_LCD2:
1397                 {
1398                         plvds_chip_info->output_interface =
1399                             INTERFACE_LVDS0LVDS1;
1400                         break;
1401                 }
1402
1403         case HW_LAYOUT_LCD_DVI:
1404                 {
1405                         plvds_chip_info->output_interface = INTERFACE_LVDS1;
1406                         break;
1407                 }
1408
1409         default:
1410                 {
1411                         plvds_chip_info->output_interface = INTERFACE_LVDS1;
1412                         break;
1413                 }
1414         }
1415
1416         DEBUG_MSG(KERN_INFO
1417                   "Display Hardware Layout: 0x%x, LCD DI Port: 0x%x\n",
1418                   viafb_display_hardware_layout,
1419                   plvds_chip_info->output_interface);
1420 }
1421
1422 void viafb_init_lvds_output_interface(struct lvds_chip_information
1423                                 *plvds_chip_info,
1424                                 struct lvds_setting_information
1425                                 *plvds_setting_info)
1426 {
1427         if (INTERFACE_NONE != plvds_chip_info->output_interface) {
1428                 /*Do nothing, lcd port is specified by module parameter */
1429                 return;
1430         }
1431
1432         switch (plvds_chip_info->lvds_chip_name) {
1433
1434         case VT1636_LVDS:
1435                 switch (viaparinfo->chip_info->gfx_chip_name) {
1436                 case UNICHROME_CX700:
1437                         plvds_chip_info->output_interface = INTERFACE_DVP1;
1438                         break;
1439                 case UNICHROME_CN700:
1440                         plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
1441                         break;
1442                 default:
1443                         plvds_chip_info->output_interface = INTERFACE_DVP0;
1444                         break;
1445                 }
1446                 break;
1447
1448         case INTEGRATED_LVDS:
1449                 check_diport_of_integrated_lvds(plvds_chip_info,
1450                                                 plvds_setting_info);
1451                 break;
1452
1453         default:
1454                 switch (viaparinfo->chip_info->gfx_chip_name) {
1455                 case UNICHROME_K8M890:
1456                 case UNICHROME_P4M900:
1457                 case UNICHROME_P4M890:
1458                         plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
1459                         break;
1460                 default:
1461                         plvds_chip_info->output_interface = INTERFACE_DFP;
1462                         break;
1463                 }
1464                 break;
1465         }
1466 }
1467
1468 static struct display_timing lcd_centering_timging(struct display_timing
1469                                             mode_crt_reg,
1470                                             struct display_timing panel_crt_reg)
1471 {
1472         struct display_timing crt_reg;
1473
1474         crt_reg.hor_total = panel_crt_reg.hor_total;
1475         crt_reg.hor_addr = mode_crt_reg.hor_addr;
1476         crt_reg.hor_blank_start =
1477             (panel_crt_reg.hor_addr - mode_crt_reg.hor_addr) / 2 +
1478             crt_reg.hor_addr;
1479         crt_reg.hor_blank_end = panel_crt_reg.hor_blank_end;
1480         crt_reg.hor_sync_start =
1481             (panel_crt_reg.hor_sync_start -
1482              panel_crt_reg.hor_blank_start) + crt_reg.hor_blank_start;
1483         crt_reg.hor_sync_end = panel_crt_reg.hor_sync_end;
1484
1485         crt_reg.ver_total = panel_crt_reg.ver_total;
1486         crt_reg.ver_addr = mode_crt_reg.ver_addr;
1487         crt_reg.ver_blank_start =
1488             (panel_crt_reg.ver_addr - mode_crt_reg.ver_addr) / 2 +
1489             crt_reg.ver_addr;
1490         crt_reg.ver_blank_end = panel_crt_reg.ver_blank_end;
1491         crt_reg.ver_sync_start =
1492             (panel_crt_reg.ver_sync_start -
1493              panel_crt_reg.ver_blank_start) + crt_reg.ver_blank_start;
1494         crt_reg.ver_sync_end = panel_crt_reg.ver_sync_end;
1495
1496         return crt_reg;
1497 }
1498
1499 static void load_crtc_shadow_timing(struct display_timing mode_timing,
1500                              struct display_timing panel_timing)
1501 {
1502         struct io_register *reg = NULL;
1503         int i;
1504         int viafb_load_reg_Num = 0;
1505         int reg_value = 0;
1506
1507         if (viaparinfo->lvds_setting_info->display_method == LCD_EXPANDSION) {
1508                 /* Expansion */
1509                 for (i = 12; i < 20; i++) {
1510                         switch (i) {
1511                         case H_TOTAL_SHADOW_INDEX:
1512                                 reg_value =
1513                                     IGA2_HOR_TOTAL_SHADOW_FORMULA
1514                                     (panel_timing.hor_total);
1515                                 viafb_load_reg_Num =
1516                                     iga2_shadow_crtc_reg.hor_total_shadow.
1517                                     reg_num;
1518                                 reg = iga2_shadow_crtc_reg.hor_total_shadow.reg;
1519                                 break;
1520                         case H_BLANK_END_SHADOW_INDEX:
1521                                 reg_value =
1522                                     IGA2_HOR_BLANK_END_SHADOW_FORMULA
1523                                     (panel_timing.hor_blank_start,
1524                                      panel_timing.hor_blank_end);
1525                                 viafb_load_reg_Num =
1526                                     iga2_shadow_crtc_reg.
1527                                     hor_blank_end_shadow.reg_num;
1528                                 reg =
1529                                     iga2_shadow_crtc_reg.
1530                                     hor_blank_end_shadow.reg;
1531                                 break;
1532                         case V_TOTAL_SHADOW_INDEX:
1533                                 reg_value =
1534                                     IGA2_VER_TOTAL_SHADOW_FORMULA
1535                                     (panel_timing.ver_total);
1536                                 viafb_load_reg_Num =
1537                                     iga2_shadow_crtc_reg.ver_total_shadow.
1538                                     reg_num;
1539                                 reg = iga2_shadow_crtc_reg.ver_total_shadow.reg;
1540                                 break;
1541                         case V_ADDR_SHADOW_INDEX:
1542                                 reg_value =
1543                                     IGA2_VER_ADDR_SHADOW_FORMULA
1544                                     (panel_timing.ver_addr);
1545                                 viafb_load_reg_Num =
1546                                     iga2_shadow_crtc_reg.ver_addr_shadow.
1547                                     reg_num;
1548                                 reg = iga2_shadow_crtc_reg.ver_addr_shadow.reg;
1549                                 break;
1550                         case V_BLANK_SATRT_SHADOW_INDEX:
1551                                 reg_value =
1552                                     IGA2_VER_BLANK_START_SHADOW_FORMULA
1553                                     (panel_timing.ver_blank_start);
1554                                 viafb_load_reg_Num =
1555                                     iga2_shadow_crtc_reg.
1556                                     ver_blank_start_shadow.reg_num;
1557                                 reg =
1558                                     iga2_shadow_crtc_reg.
1559                                     ver_blank_start_shadow.reg;
1560                                 break;
1561                         case V_BLANK_END_SHADOW_INDEX:
1562                                 reg_value =
1563                                     IGA2_VER_BLANK_END_SHADOW_FORMULA
1564                                     (panel_timing.ver_blank_start,
1565                                      panel_timing.ver_blank_end);
1566                                 viafb_load_reg_Num =
1567                                     iga2_shadow_crtc_reg.
1568                                     ver_blank_end_shadow.reg_num;
1569                                 reg =
1570                                     iga2_shadow_crtc_reg.
1571                                     ver_blank_end_shadow.reg;
1572                                 break;
1573                         case V_SYNC_SATRT_SHADOW_INDEX:
1574                                 reg_value =
1575                                     IGA2_VER_SYNC_START_SHADOW_FORMULA
1576                                     (panel_timing.ver_sync_start);
1577                                 viafb_load_reg_Num =
1578                                     iga2_shadow_crtc_reg.
1579                                     ver_sync_start_shadow.reg_num;
1580                                 reg =
1581                                     iga2_shadow_crtc_reg.
1582                                     ver_sync_start_shadow.reg;
1583                                 break;
1584                         case V_SYNC_END_SHADOW_INDEX:
1585                                 reg_value =
1586                                     IGA2_VER_SYNC_END_SHADOW_FORMULA
1587                                     (panel_timing.ver_sync_start,
1588                                      panel_timing.ver_sync_end);
1589                                 viafb_load_reg_Num =
1590                                     iga2_shadow_crtc_reg.
1591                                     ver_sync_end_shadow.reg_num;
1592                                 reg =
1593                                     iga2_shadow_crtc_reg.
1594                                     ver_sync_end_shadow.reg;
1595                                 break;
1596                         }
1597                         viafb_load_reg(reg_value,
1598                                 viafb_load_reg_Num, reg, VIACR);
1599                 }
1600         } else {                /* Centering */
1601                 for (i = 12; i < 20; i++) {
1602                         switch (i) {
1603                         case H_TOTAL_SHADOW_INDEX:
1604                                 reg_value =
1605                                     IGA2_HOR_TOTAL_SHADOW_FORMULA
1606                                     (panel_timing.hor_total);
1607                                 viafb_load_reg_Num =
1608                                     iga2_shadow_crtc_reg.hor_total_shadow.
1609                                     reg_num;
1610                                 reg = iga2_shadow_crtc_reg.hor_total_shadow.reg;
1611                                 break;
1612                         case H_BLANK_END_SHADOW_INDEX:
1613                                 reg_value =
1614                                     IGA2_HOR_BLANK_END_SHADOW_FORMULA
1615                                     (panel_timing.hor_blank_start,
1616                                      panel_timing.hor_blank_end);
1617                                 viafb_load_reg_Num =
1618                                     iga2_shadow_crtc_reg.
1619                                     hor_blank_end_shadow.reg_num;
1620                                 reg =
1621                                     iga2_shadow_crtc_reg.
1622                                     hor_blank_end_shadow.reg;
1623                                 break;
1624                         case V_TOTAL_SHADOW_INDEX:
1625                                 reg_value =
1626                                     IGA2_VER_TOTAL_SHADOW_FORMULA
1627                                     (panel_timing.ver_total);
1628                                 viafb_load_reg_Num =
1629                                     iga2_shadow_crtc_reg.ver_total_shadow.
1630                                     reg_num;
1631                                 reg = iga2_shadow_crtc_reg.ver_total_shadow.reg;
1632                                 break;
1633                         case V_ADDR_SHADOW_INDEX:
1634                                 reg_value =
1635                                     IGA2_VER_ADDR_SHADOW_FORMULA
1636                                     (mode_timing.ver_addr);
1637                                 viafb_load_reg_Num =
1638                                     iga2_shadow_crtc_reg.ver_addr_shadow.
1639                                     reg_num;
1640                                 reg = iga2_shadow_crtc_reg.ver_addr_shadow.reg;
1641                                 break;
1642                         case V_BLANK_SATRT_SHADOW_INDEX:
1643                                 reg_value =
1644                                     IGA2_VER_BLANK_START_SHADOW_FORMULA
1645                                     (mode_timing.ver_blank_start);
1646                                 viafb_load_reg_Num =
1647                                     iga2_shadow_crtc_reg.
1648                                     ver_blank_start_shadow.reg_num;
1649                                 reg =
1650                                     iga2_shadow_crtc_reg.
1651                                     ver_blank_start_shadow.reg;
1652                                 break;
1653                         case V_BLANK_END_SHADOW_INDEX:
1654                                 reg_value =
1655                                     IGA2_VER_BLANK_END_SHADOW_FORMULA
1656                                     (panel_timing.ver_blank_start,
1657                                      panel_timing.ver_blank_end);
1658                                 viafb_load_reg_Num =
1659                                     iga2_shadow_crtc_reg.
1660                                     ver_blank_end_shadow.reg_num;
1661                                 reg =
1662                                     iga2_shadow_crtc_reg.
1663                                     ver_blank_end_shadow.reg;
1664                                 break;
1665                         case V_SYNC_SATRT_SHADOW_INDEX:
1666                                 reg_value =
1667                                     IGA2_VER_SYNC_START_SHADOW_FORMULA(
1668                                     (panel_timing.ver_sync_start -
1669                                     panel_timing.ver_blank_start) +
1670                                     (panel_timing.ver_addr -
1671                                     mode_timing.ver_addr) / 2 +
1672                                     mode_timing.ver_addr);
1673                                 viafb_load_reg_Num =
1674                                     iga2_shadow_crtc_reg.ver_sync_start_shadow.
1675                                     reg_num;
1676                                 reg =
1677                                     iga2_shadow_crtc_reg.ver_sync_start_shadow.
1678                                     reg;
1679                                 break;
1680                         case V_SYNC_END_SHADOW_INDEX:
1681                                 reg_value =
1682                                     IGA2_VER_SYNC_END_SHADOW_FORMULA(
1683                                     (panel_timing.ver_sync_start -
1684                                     panel_timing.ver_blank_start) +
1685                                     (panel_timing.ver_addr -
1686                                     mode_timing.ver_addr) / 2 +
1687                                     mode_timing.ver_addr,
1688                                     panel_timing.ver_sync_end);
1689                                 viafb_load_reg_Num =
1690                                     iga2_shadow_crtc_reg.ver_sync_end_shadow.
1691                                     reg_num;
1692                                 reg =
1693                                     iga2_shadow_crtc_reg.ver_sync_end_shadow.
1694                                     reg;
1695                                 break;
1696                         }
1697                         viafb_load_reg(reg_value,
1698                                 viafb_load_reg_Num, reg, VIACR);
1699                 }
1700         }
1701 }
1702
1703 bool viafb_lcd_get_mobile_state(bool *mobile)
1704 {
1705         unsigned char *romptr, *tableptr;
1706         u8 core_base;
1707         unsigned char *biosptr;
1708         /* Rom address */
1709         u32 romaddr = 0x000C0000;
1710         u16 start_pattern = 0;
1711
1712         biosptr = ioremap(romaddr, 0x10000);
1713
1714         memcpy(&start_pattern, biosptr, 2);
1715         /* Compare pattern */
1716         if (start_pattern == 0xAA55) {
1717                 /* Get the start of Table */
1718                 /* 0x1B means BIOS offset position */
1719                 romptr = biosptr + 0x1B;
1720                 tableptr = biosptr + *((u16 *) romptr);
1721
1722                 /* Get the start of biosver structure */
1723                 /* 18 means BIOS version position. */
1724                 romptr = tableptr + 18;
1725                 romptr = biosptr + *((u16 *) romptr);
1726
1727                 /* The offset should be 44, but the
1728                    actual image is less three char. */
1729                 /* pRom += 44; */
1730                 romptr += 41;
1731
1732                 core_base = *romptr++;
1733
1734                 if (core_base & 0x8)
1735                         *mobile = false;
1736                 else
1737                         *mobile = true;
1738                 /* release memory */
1739                 iounmap(biosptr);
1740
1741                 return true;
1742         } else {
1743                 iounmap(biosptr);
1744                 return false;
1745         }
1746 }
1747
1748 static void viafb_load_scaling_factor_for_p4m900(int set_hres,
1749         int set_vres, int panel_hres, int panel_vres)
1750 {
1751         int h_scaling_factor;
1752         int v_scaling_factor;
1753         u8 cra2 = 0;
1754         u8 cr77 = 0;
1755         u8 cr78 = 0;
1756         u8 cr79 = 0;
1757         u8 cr9f = 0;
1758         /* Check if expansion for horizontal */
1759         if (set_hres < panel_hres) {
1760                 /* Load Horizontal Scaling Factor */
1761
1762                 /* For VIA_K8M800 or later chipsets. */
1763                 h_scaling_factor =
1764                     K800_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
1765                 /* HSCaleFactor[1:0] at CR9F[1:0] */
1766                 cr9f = h_scaling_factor & 0x0003;
1767                 /* HSCaleFactor[9:2] at CR77[7:0] */
1768                 cr77 = (h_scaling_factor & 0x03FC) >> 2;
1769                 /* HSCaleFactor[11:10] at CR79[5:4] */
1770                 cr79 = (h_scaling_factor & 0x0C00) >> 10;
1771                 cr79 <<= 4;
1772
1773                 /* Horizontal scaling enabled */
1774                 cra2 = 0xC0;
1775
1776                 DEBUG_MSG(KERN_INFO "Horizontal Scaling value = %d\n",
1777                           h_scaling_factor);
1778         } else {
1779                 /* Horizontal scaling disabled */
1780                 cra2 = 0x00;
1781         }
1782
1783         /* Check if expansion for vertical */
1784         if (set_vres < panel_vres) {
1785                 /* Load Vertical Scaling Factor */
1786
1787                 /* For VIA_K8M800 or later chipsets. */
1788                 v_scaling_factor =
1789                     K800_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
1790
1791                 /* Vertical scaling enabled */
1792                 cra2 |= 0x08;
1793                 /* VSCaleFactor[0] at CR79[3] */
1794                 cr79 |= ((v_scaling_factor & 0x0001) << 3);
1795                 /* VSCaleFactor[8:1] at CR78[7:0] */
1796                 cr78 |= (v_scaling_factor & 0x01FE) >> 1;
1797                 /* VSCaleFactor[10:9] at CR79[7:6] */
1798                 cr79 |= ((v_scaling_factor & 0x0600) >> 9) << 6;
1799
1800                 DEBUG_MSG(KERN_INFO "Vertical Scaling value = %d\n",
1801                           v_scaling_factor);
1802         } else {
1803                 /* Vertical scaling disabled */
1804                 cra2 |= 0x00;
1805         }
1806
1807         viafb_write_reg_mask(CRA2, VIACR, cra2, BIT3 + BIT6 + BIT7);
1808         viafb_write_reg_mask(CR77, VIACR, cr77, 0xFF);
1809         viafb_write_reg_mask(CR78, VIACR, cr78, 0xFF);
1810         viafb_write_reg_mask(CR79, VIACR, cr79, 0xF8);
1811         viafb_write_reg_mask(CR9F, VIACR, cr9f, BIT0 + BIT1);
1812 }