drivers/video/pxa_lcd.c

   1 /*
   2  * PXA LCD Controller
   3  *
   4  * (C) Copyright 2001-2002
   5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 /************************************************************************/
  11 /* ** HEADER FILES                                                      */
  12 /************************************************************************/
  13
  14 #include <config.h>
  15 #include <common.h>
  16 #include <stdarg.h>
  17 #include <linux/types.h>
  18 #include <stdio_dev.h>
  19 #include <lcd.h>
  20 #include <asm/arch/pxa-regs.h>
  21 #include <asm/io.h>
  22
  23 /* #define DEBUG */
  24
  25 #ifdef CONFIG_LCD
  26
  27 /*----------------------------------------------------------------------*/
  28 /*
  29  * Define panel bpp, LCCR0, LCCR3 and panel_info video struct for
  30  * your display.
  31  */
  32
  33 #ifdef CONFIG_PXA_VGA
  34 /* LCD outputs connected to a video DAC  */
  35 # define LCD_BPP        LCD_COLOR8
  36
  37 /* you have to set lccr0 and lccr3 (including pcd) */
  38 # define REG_LCCR0      0x003008f8
  39 # define REG_LCCR3      0x0300FF01
  40
  41 /* 640x480x16 @ 61 Hz */
  42 vidinfo_t panel_info = {
  43         .vl_col         = 640,
  44         .vl_row         = 480,
  45         .vl_width       = 640,
  46         .vl_height      = 480,
  47         .vl_clkp        = CONFIG_SYS_HIGH,
  48         .vl_oep         = CONFIG_SYS_HIGH,
  49         .vl_hsp         = CONFIG_SYS_HIGH,
  50         .vl_vsp         = CONFIG_SYS_HIGH,
  51         .vl_dp          = CONFIG_SYS_HIGH,
  52         .vl_bpix        = LCD_BPP,
  53         .vl_lbw         = 0,
  54         .vl_splt        = 0,
  55         .vl_clor        = 0,
  56         .vl_tft         = 1,
  57         .vl_hpw         = 40,
  58         .vl_blw         = 56,
  59         .vl_elw         = 56,
  60         .vl_vpw         = 20,
  61         .vl_bfw         = 8,
  62         .vl_efw         = 8,
  63 };
  64 #endif /* CONFIG_PXA_VIDEO */
  65
  66 /*----------------------------------------------------------------------*/
  67 #ifdef CONFIG_SHARP_LM8V31
  68
  69 # define LCD_BPP        LCD_COLOR8
  70 # define LCD_INVERT_COLORS      /* Needed for colors to be correct, but why?    */
  71
  72 /* you have to set lccr0 and lccr3 (including pcd) */
  73 # define REG_LCCR0      0x0030087C
  74 # define REG_LCCR3      0x0340FF08
  75
  76 vidinfo_t panel_info = {
  77         .vl_col         = 640,
  78         .vl_row         = 480,
  79         .vl_width       = 157,
  80         .vl_height      = 118,
  81         .vl_clkp        = CONFIG_SYS_HIGH,
  82         .vl_oep         = CONFIG_SYS_HIGH,
  83         .vl_hsp         = CONFIG_SYS_HIGH,
  84         .vl_vsp         = CONFIG_SYS_HIGH,
  85         .vl_dp          = CONFIG_SYS_HIGH,
  86         .vl_bpix        = LCD_BPP,
  87         .vl_lbw         = 0,
  88         .vl_splt        = 1,
  89         .vl_clor        = 1,
  90         .vl_tft         = 0,
  91         .vl_hpw         = 1,
  92         .vl_blw         = 3,
  93         .vl_elw         = 3,
  94         .vl_vpw         = 1,
  95         .vl_bfw         = 0,
  96         .vl_efw         = 0,
  97 };
  98 #endif /* CONFIG_SHARP_LM8V31 */
  99 /*----------------------------------------------------------------------*/
 100 #ifdef CONFIG_VOIPAC_LCD
 101
 102 # define LCD_BPP        LCD_COLOR8
 103 # define LCD_INVERT_COLORS
 104
 105 /* you have to set lccr0 and lccr3 (including pcd) */
 106 # define REG_LCCR0      0x043008f8
 107 # define REG_LCCR3      0x0340FF08
 108
 109 vidinfo_t panel_info = {
 110         .vl_col         = 640,
 111         .vl_row         = 480,
 112         .vl_width       = 157,
 113         .vl_height      = 118,
 114         .vl_clkp        = CONFIG_SYS_HIGH,
 115         .vl_oep         = CONFIG_SYS_HIGH,
 116         .vl_hsp         = CONFIG_SYS_HIGH,
 117         .vl_vsp         = CONFIG_SYS_HIGH,
 118         .vl_dp          = CONFIG_SYS_HIGH,
 119         .vl_bpix        = LCD_BPP,
 120         .vl_lbw         = 0,
 121         .vl_splt        = 1,
 122         .vl_clor        = 1,
 123         .vl_tft         = 1,
 124         .vl_hpw         = 32,
 125         .vl_blw         = 144,
 126         .vl_elw         = 32,
 127         .vl_vpw         = 2,
 128         .vl_bfw         = 13,
 129         .vl_efw         = 30,
 130 };
 131 #endif /* CONFIG_VOIPAC_LCD */
 132
 133 /*----------------------------------------------------------------------*/
 134 #ifdef CONFIG_HITACHI_SX14
 135 /* Hitachi SX14Q004-ZZA color STN LCD */
 136 #define LCD_BPP         LCD_COLOR8
 137
 138 /* you have to set lccr0 and lccr3 (including pcd) */
 139 #define REG_LCCR0       0x00301079
 140 #define REG_LCCR3       0x0340FF20
 141
 142 vidinfo_t panel_info = {
 143         .vl_col         = 320,
 144         .vl_row         = 240,
 145         .vl_width       = 167,
 146         .vl_height      = 109,
 147         .vl_clkp        = CONFIG_SYS_HIGH,
 148         .vl_oep         = CONFIG_SYS_HIGH,
 149         .vl_hsp         = CONFIG_SYS_HIGH,
 150         .vl_vsp         = CONFIG_SYS_HIGH,
 151         .vl_dp          = CONFIG_SYS_HIGH,
 152         .vl_bpix        = LCD_BPP,
 153         .vl_lbw         = 1,
 154         .vl_splt        = 0,
 155         .vl_clor        = 1,
 156         .vl_tft         = 0,
 157         .vl_hpw         = 1,
 158         .vl_blw         = 1,
 159         .vl_elw         = 1,
 160         .vl_vpw         = 7,
 161         .vl_bfw         = 0,
 162         .vl_efw         = 0,
 163 };
 164 #endif /* CONFIG_HITACHI_SX14 */
 165
 166 /*----------------------------------------------------------------------*/
 167 #ifdef CONFIG_LMS283GF05
 168
 169 # define LCD_BPP        LCD_COLOR8
 170 /*# define LCD_INVERT_COLORS*/
 171
 172 /* you have to set lccr0 and lccr3 (including pcd) */
 173 # define REG_LCCR0      0x043008f8
 174 # define REG_LCCR3      0x03b00009
 175
 176 vidinfo_t panel_info = {
 177         .vl_col         = 240,
 178         .vl_row         = 320,
 179         .vl_width       = 240,
 180         .vl_height      = 320,
 181         .vl_clkp        = CONFIG_SYS_HIGH,
 182         .vl_oep         = CONFIG_SYS_LOW,
 183         .vl_hsp         = CONFIG_SYS_LOW,
 184         .vl_vsp         = CONFIG_SYS_LOW,
 185         .vl_dp          = CONFIG_SYS_HIGH,
 186         .vl_bpix        = LCD_BPP,
 187         .vl_lbw         = 0,
 188         .vl_splt        = 1,
 189         .vl_clor        = 1,
 190         .vl_tft         = 1,
 191         .vl_hpw         = 4,
 192         .vl_blw         = 4,
 193         .vl_elw         = 8,
 194         .vl_vpw         = 4,
 195         .vl_bfw         = 4,
 196         .vl_efw         = 8,
 197 };
 198 #endif /* CONFIG_LMS283GF05 */
 199
 200 /*----------------------------------------------------------------------*/
 201
 202 #ifdef CONFIG_ACX517AKN
 203
 204 # define LCD_BPP        LCD_COLOR8
 205
 206 /* you have to set lccr0 and lccr3 (including pcd) */
 207 # define REG_LCCR0      0x003008f9
 208 # define REG_LCCR3      0x03700006
 209
 210 vidinfo_t panel_info = {
 211         .vl_col         = 320,
 212         .vl_row         = 320,
 213         .vl_width       = 320,
 214         .vl_height      = 320,
 215         .vl_clkp        = CONFIG_SYS_HIGH,
 216         .vl_oep         = CONFIG_SYS_LOW,
 217         .vl_hsp         = CONFIG_SYS_LOW,
 218         .vl_vsp         = CONFIG_SYS_LOW,
 219         .vl_dp          = CONFIG_SYS_HIGH,
 220         .vl_bpix        = LCD_BPP,
 221         .vl_lbw         = 0,
 222         .vl_splt        = 1,
 223         .vl_clor        = 1,
 224         .vl_tft         = 1,
 225         .vl_hpw         = 0x04,
 226         .vl_blw         = 0x1c,
 227         .vl_elw         = 0x08,
 228         .vl_vpw         = 0x01,
 229         .vl_bfw         = 0x07,
 230         .vl_efw         = 0x08,
 231 };
 232 #endif /* CONFIG_ACX517AKN */
 233
 234 #ifdef CONFIG_ACX544AKN
 235
 236 # define LCD_BPP        LCD_COLOR16
 237
 238 /* you have to set lccr0 and lccr3 (including pcd) */
 239 # define REG_LCCR0      0x003008f9
 240 # define REG_LCCR3      0x04700007 /* 16bpp */
 241
 242 vidinfo_t panel_info = {
 243         .vl_col         = 320,
 244         .vl_row         = 320,
 245         .vl_width       = 320,
 246         .vl_height      = 320,
 247         .vl_clkp        = CONFIG_SYS_LOW,
 248         .vl_oep         = CONFIG_SYS_LOW,
 249         .vl_hsp         = CONFIG_SYS_LOW,
 250         .vl_vsp         = CONFIG_SYS_LOW,
 251         .vl_dp          = CONFIG_SYS_LOW,
 252         .vl_bpix        = LCD_BPP,
 253         .vl_lbw         = 0,
 254         .vl_splt        = 0,
 255         .vl_clor        = 1,
 256         .vl_tft         = 1,
 257         .vl_hpw         = 0x05,
 258         .vl_blw         = 0x13,
 259         .vl_elw         = 0x08,
 260         .vl_vpw         = 0x02,
 261         .vl_bfw         = 0x07,
 262         .vl_efw         = 0x05,
 263 };
 264 #endif /* CONFIG_ACX544AKN */
 265
 266 /*----------------------------------------------------------------------*/
 267
 268 #ifdef CONFIG_LQ038J7DH53
 269
 270 # define LCD_BPP        LCD_COLOR8
 271
 272 /* you have to set lccr0 and lccr3 (including pcd) */
 273 # define REG_LCCR0      0x003008f9
 274 # define REG_LCCR3      0x03700004
 275
 276 vidinfo_t panel_info = {
 277         .vl_col         = 320,
 278         .vl_row         = 480,
 279         .vl_width       = 320,
 280         .vl_height      = 480,
 281         .vl_clkp        = CONFIG_SYS_HIGH,
 282         .vl_oep         = CONFIG_SYS_LOW,
 283         .vl_hsp         = CONFIG_SYS_LOW,
 284         .vl_vsp         = CONFIG_SYS_LOW,
 285         .vl_dp          = CONFIG_SYS_HIGH,
 286         .vl_bpix        = LCD_BPP,
 287         .vl_lbw         = 0,
 288         .vl_splt        = 1,
 289         .vl_clor        = 1,
 290         .vl_tft         = 1,
 291         .vl_hpw         = 0x04,
 292         .vl_blw         = 0x20,
 293         .vl_elw         = 0x01,
 294         .vl_vpw         = 0x01,
 295         .vl_bfw         = 0x04,
 296         .vl_efw         = 0x01,
 297 };
 298 #endif /* CONFIG_ACX517AKN */
 299
 300 /*----------------------------------------------------------------------*/
 301
 302 #ifdef CONFIG_LITTLETON_LCD
 303 # define LCD_BPP        LCD_COLOR8
 304
 305 /* you have to set lccr0 and lccr3 (including pcd) */
 306 # define REG_LCCR0      0x003008f8
 307 # define REG_LCCR3      0x0300FF04
 308
 309 vidinfo_t panel_info = {
 310         .vl_col         = 480,
 311         .vl_row         = 640,
 312         .vl_width       = 480,
 313         .vl_height      = 640,
 314         .vl_clkp        = CONFIG_SYS_HIGH,
 315         .vl_oep         = CONFIG_SYS_HIGH,
 316         .vl_hsp         = CONFIG_SYS_HIGH,
 317         .vl_vsp         = CONFIG_SYS_HIGH,
 318         .vl_dp          = CONFIG_SYS_HIGH,
 319         .vl_bpix        = LCD_BPP,
 320         .vl_lbw         = 0,
 321         .vl_splt        = 0,
 322         .vl_clor        = 0,
 323         .vl_tft         = 1,
 324         .vl_hpw         = 9,
 325         .vl_blw         = 8,
 326         .vl_elw         = 24,
 327         .vl_vpw         = 2,
 328         .vl_bfw         = 2,
 329         .vl_efw         = 4,
 330 };
 331 #endif /* CONFIG_LITTLETON_LCD */
 332
 333 /*----------------------------------------------------------------------*/
 334
 335 static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid);
 336 static void pxafb_setup_gpio (vidinfo_t *vid);
 337 static void pxafb_enable_controller (vidinfo_t *vid);
 338 static int pxafb_init (vidinfo_t *vid);
 339
 340 /************************************************************************/
 341 /* ---------------  PXA chipset specific functions  ------------------- */
 342 /************************************************************************/
 343
 344 ushort *configuration_get_cmap(void)
 345 {
 346         struct pxafb_info *fbi = &panel_info.pxa;
 347         return (ushort *)fbi->palette;
 348 }
 349
 350 void lcd_ctrl_init (void *lcdbase)
 351 {
 352         pxafb_init_mem(lcdbase, &panel_info);
 353         pxafb_init(&panel_info);
 354         pxafb_setup_gpio(&panel_info);
 355         pxafb_enable_controller(&panel_info);
 356 }
 357
 358 /*----------------------------------------------------------------------*/
 359 #if LCD_BPP == LCD_COLOR8
 360 void
 361 lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
 362 {
 363         struct pxafb_info *fbi = &panel_info.pxa;
 364         unsigned short *palette = (unsigned short *)fbi->palette;
 365         u_int val;
 366
 367         if (regno < fbi->palette_size) {
 368                 val = ((red << 8) & 0xf800);
 369                 val |= ((green << 4) & 0x07e0);
 370                 val |= (blue & 0x001f);
 371
 372 #ifdef LCD_INVERT_COLORS
 373                 palette[regno] = ~val;
 374 #else
 375                 palette[regno] = val;
 376 #endif
 377         }
 378
 379         debug ("setcolreg: reg %2d @ %p: R=%02X G=%02X B=%02X => %04X\n",
 380                 regno, &palette[regno],
 381                 red, green, blue,
 382                 palette[regno]);
 383 }
 384 #endif /* LCD_COLOR8 */
 385
 386 /*----------------------------------------------------------------------*/
 387 __weak void lcd_enable(void)
 388 {
 389 }
 390
 391 /************************************************************************/
 392 /* ** PXA255 specific routines                                          */
 393 /************************************************************************/
 394
 395 /*
 396  * Calculate fb size for VIDEOLFB_ATAG. Size returned contains fb,
 397  * descriptors and palette areas.
 398  */
 399 ulong calc_fbsize (void)
 400 {
 401         ulong size;
 402         int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 403
 404         size = line_length * panel_info.vl_row;
 405         size += PAGE_SIZE;
 406
 407         return size;
 408 }
 409
 410 static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid)
 411 {
 412         u_long palette_mem_size;
 413         struct pxafb_info *fbi = &vid->pxa;
 414         int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
 415
 416         fbi->screen = (u_long)lcdbase;
 417
 418         fbi->palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
 419         palette_mem_size = fbi->palette_size * sizeof(u16);
 420
 421         debug("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
 422         /* locate palette and descs at end of page following fb */
 423         fbi->palette = (u_long)lcdbase + fb_size + PAGE_SIZE - palette_mem_size;
 424
 425         return 0;
 426 }
 427 #ifdef  CONFIG_CPU_MONAHANS
 428 static inline void pxafb_setup_gpio (vidinfo_t *vid) {}
 429 #else
 430 static void pxafb_setup_gpio (vidinfo_t *vid)
 431 {
 432         u_long lccr0;
 433
 434         /*
 435          * setup is based on type of panel supported
 436          */
 437
 438         lccr0 = vid->pxa.reg_lccr0;
 439
 440         /* 4 bit interface */
 441         if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
 442         {
 443                 debug("Setting GPIO for 4 bit data\n");
 444                 /* bits 58-61 */
 445                 writel(readl(GPDR1) | (0xf << 26), GPDR1);
 446                 writel((readl(GAFR1_U) & ~(0xff << 20)) | (0xaa << 20),
 447                         GAFR1_U);
 448
 449                 /* bits 74-77 */
 450                 writel(readl(GPDR2) | (0xf << 10), GPDR2);
 451                 writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
 452                         GAFR2_L);
 453         }
 454
 455         /* 8 bit interface */
 456         else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
 457                 (!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
 458         {
 459                 debug("Setting GPIO for 8 bit data\n");
 460                 /* bits 58-65 */
 461                 writel(readl(GPDR1) | (0x3f << 26), GPDR1);
 462                 writel(readl(GPDR2) | (0x3), GPDR2);
 463
 464                 writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
 465                         GAFR1_U);
 466                 writel((readl(GAFR2_L) & ~0xf) | (0xa), GAFR2_L);
 467
 468                 /* bits 74-77 */
 469                 writel(readl(GPDR2) | (0xf << 10), GPDR2);
 470                 writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
 471                         GAFR2_L);
 472         }
 473
 474         /* 16 bit interface */
 475         else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
 476         {
 477                 debug("Setting GPIO for 16 bit data\n");
 478                 /* bits 58-77 */
 479                 writel(readl(GPDR1) | (0x3f << 26), GPDR1);
 480                 writel(readl(GPDR2) | 0x00003fff, GPDR2);
 481
 482                 writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
 483                         GAFR1_U);
 484                 writel((readl(GAFR2_L) & 0xf0000000) | 0x0aaaaaaa, GAFR2_L);
 485         }
 486         else
 487         {
 488                 printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
 489         }
 490 }
 491 #endif
 492
 493 static void pxafb_enable_controller (vidinfo_t *vid)
 494 {
 495         debug("Enabling LCD controller\n");
 496
 497         /* Sequence from 11.7.10 */
 498         writel(vid->pxa.reg_lccr3, LCCR3);
 499         writel(vid->pxa.reg_lccr2, LCCR2);
 500         writel(vid->pxa.reg_lccr1, LCCR1);
 501         writel(vid->pxa.reg_lccr0 & ~LCCR0_ENB, LCCR0);
 502         writel(vid->pxa.fdadr0, FDADR0);
 503         writel(vid->pxa.fdadr1, FDADR1);
 504         writel(readl(LCCR0) | LCCR0_ENB, LCCR0);
 505
 506 #ifdef  CONFIG_CPU_MONAHANS
 507         writel(readl(CKENA) | CKENA_1_LCD, CKENA);
 508 #else
 509         writel(readl(CKEN) | CKEN16_LCD, CKEN);
 510 #endif
 511
 512         debug("FDADR0 = 0x%08x\n", readl(FDADR0));
 513         debug("FDADR1 = 0x%08x\n", readl(FDADR1));
 514         debug("LCCR0 = 0x%08x\n", readl(LCCR0));
 515         debug("LCCR1 = 0x%08x\n", readl(LCCR1));
 516         debug("LCCR2 = 0x%08x\n", readl(LCCR2));
 517         debug("LCCR3 = 0x%08x\n", readl(LCCR3));
 518 }
 519
 520 static int pxafb_init (vidinfo_t *vid)
 521 {
 522         struct pxafb_info *fbi = &vid->pxa;
 523
 524         debug("Configuring PXA LCD\n");
 525
 526         fbi->reg_lccr0 = REG_LCCR0;
 527         fbi->reg_lccr3 = REG_LCCR3;
 528
 529         debug("vid: vl_col=%d hslen=%d lm=%d rm=%d\n",
 530                 vid->vl_col, vid->vl_hpw,
 531                 vid->vl_blw, vid->vl_elw);
 532         debug("vid: vl_row=%d vslen=%d um=%d bm=%d\n",
 533                 vid->vl_row, vid->vl_vpw,
 534                 vid->vl_bfw, vid->vl_efw);
 535
 536         fbi->reg_lccr1 =
 537                 LCCR1_DisWdth(vid->vl_col) +
 538                 LCCR1_HorSnchWdth(vid->vl_hpw) +
 539                 LCCR1_BegLnDel(vid->vl_blw) +
 540                 LCCR1_EndLnDel(vid->vl_elw);
 541
 542         fbi->reg_lccr2 =
 543                 LCCR2_DisHght(vid->vl_row) +
 544                 LCCR2_VrtSnchWdth(vid->vl_vpw) +
 545                 LCCR2_BegFrmDel(vid->vl_bfw) +
 546                 LCCR2_EndFrmDel(vid->vl_efw);
 547
 548         fbi->reg_lccr3 = REG_LCCR3 & ~(LCCR3_HSP | LCCR3_VSP);
 549         fbi->reg_lccr3 |= (vid->vl_hsp ? LCCR3_HorSnchL : LCCR3_HorSnchH)
 550                         | (vid->vl_vsp ? LCCR3_VrtSnchL : LCCR3_VrtSnchH);
 551
 552
 553         /* setup dma descriptors */
 554         fbi->dmadesc_fblow = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
 555         fbi->dmadesc_fbhigh = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
 556         fbi->dmadesc_palette = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
 557
 558         #define BYTES_PER_PANEL ((fbi->reg_lccr0 & LCCR0_SDS) ? \
 559                 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8 / 2) : \
 560                 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8))
 561
 562         /* populate descriptors */
 563         fbi->dmadesc_fblow->fdadr = (u_long)fbi->dmadesc_fblow;
 564         fbi->dmadesc_fblow->fsadr = fbi->screen + BYTES_PER_PANEL;
 565         fbi->dmadesc_fblow->fidr  = 0;
 566         fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
 567
 568         fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
 569
 570         fbi->dmadesc_fbhigh->fsadr = fbi->screen;
 571         fbi->dmadesc_fbhigh->fidr = 0;
 572         fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL;
 573
 574         fbi->dmadesc_palette->fsadr = fbi->palette;
 575         fbi->dmadesc_palette->fidr  = 0;
 576         fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
 577
 578         if( NBITS(vid->vl_bpix) < 12)
 579         {
 580                 /* assume any mode with <12 bpp is palette driven */
 581                 fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
 582                 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
 583                 /* flips back and forth between pal and fbhigh */
 584                 fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
 585         }
 586         else
 587         {
 588                 /* palette shouldn't be loaded in true-color mode */
 589                 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
 590                 fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */
 591         }
 592
 593         debug("fbi->dmadesc_fblow = 0x%lx\n", (u_long)fbi->dmadesc_fblow);
 594         debug("fbi->dmadesc_fbhigh = 0x%lx\n", (u_long)fbi->dmadesc_fbhigh);
 595         debug("fbi->dmadesc_palette = 0x%lx\n", (u_long)fbi->dmadesc_palette);
 596
 597         debug("fbi->dmadesc_fblow->fdadr = 0x%lx\n", fbi->dmadesc_fblow->fdadr);
 598         debug("fbi->dmadesc_fbhigh->fdadr = 0x%lx\n", fbi->dmadesc_fbhigh->fdadr);
 599         debug("fbi->dmadesc_palette->fdadr = 0x%lx\n", fbi->dmadesc_palette->fdadr);
 600
 601         debug("fbi->dmadesc_fblow->fsadr = 0x%lx\n", fbi->dmadesc_fblow->fsadr);
 602         debug("fbi->dmadesc_fbhigh->fsadr = 0x%lx\n", fbi->dmadesc_fbhigh->fsadr);
 603         debug("fbi->dmadesc_palette->fsadr = 0x%lx\n", fbi->dmadesc_palette->fsadr);
 604
 605         debug("fbi->dmadesc_fblow->ldcmd = 0x%lx\n", fbi->dmadesc_fblow->ldcmd);
 606         debug("fbi->dmadesc_fbhigh->ldcmd = 0x%lx\n", fbi->dmadesc_fbhigh->ldcmd);
 607         debug("fbi->dmadesc_palette->ldcmd = 0x%lx\n", fbi->dmadesc_palette->ldcmd);
 608
 609         return 0;
 610 }
 611
 612 /************************************************************************/
 613 /************************************************************************/
 614
 615 #endif /* CONFIG_LCD */