cpu/pxa/pxafb.c

   1 /*
   2  * (C) Copyright 2001-2002
   3  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /************************************************************************/
  25 /* ** HEADER FILES                                                      */
  26 /************************************************************************/
  27
  28 #define DEBUG 1
  29 #include <config.h>
  30 #include <common.h>
  31 #include <version.h>
  32 #include <stdarg.h>
  33 #include <lcdvideo.h>
  34 #include <linux/types.h>
  35 #include <devices.h>
  36 #include <asm/arch/pxa-regs.h>
  37
  38 #ifdef CONFIG_LCD
  39
  40 /************************************************************************/
  41 /* ** CONFIG STUFF -- should be moved to board config file              */
  42 /************************************************************************/
  43 #ifndef CONFIG_EDT32F10
  44 #define CONFIG_LCD_LOGO
  45 #define LCD_INFO                /* Display Logo, (C) and system info    */
  46 #endif
  47
  48 #ifdef CONFIG_V37
  49 #undef CONFIG_LCD_LOGO
  50 #undef LCD_INFO
  51 #endif
  52
  53 #undef CONFIG_LCD_LOGO
  54
  55 #define LCD_TEST_PATTERN
  56 /* #define LCD_TEST_PATTERN */  /* color backgnd for frame/color adjust */
  57 /* #define CFG_INVERT_COLORS */ /* Not needed - adjust vl_dp instead    */
  58 /************************************************************************/
  59
  60 /************************************************************************/
  61 /* ** FONT AND LOGO DATA                                                */
  62 /************************************************************************/
  63
  64 #include <video_font.h>         /* Get font data, width and height      */
  65
  66 #ifdef CONFIG_LCD_LOGO
  67 # include <bmp_nexus.h>         /* Get logo data, width and height      */
  68 #endif
  69
  70 /************************************************************************/
  71 /************************************************************************/
  72
  73 /*
  74  *  Information about displays we are using.  This is for configuring
  75  *  the LCD controller and memory allocation.  Someone has to know what
  76  *  is connected, as we can't autodetect anything.
  77  */
  78 #define CFG_HIGH        0       /* Pins are active high */
  79 #define CFG_LOW         1       /* Pins are active low */
  80
  81 /* PXA LCD DMA descriptor */
  82 struct pxafb_dma_descriptor {
  83         u_long fdadr;
  84         u_long fsadr;
  85         u_long fidr;
  86         u_long ldcmd;
  87 };
  88
  89 /* PXA LCD info */
  90 struct pxafb_info {
  91
  92         /* Misc registers */
  93         u_long reg_lccr3;
  94         u_long reg_lccr2;
  95         u_long reg_lccr1;
  96         u_long reg_lccr0;
  97         u_long fdadr0;
  98         u_long fdadr1;
  99
 100         /* DMA descriptors */
 101         struct pxafb_dma_descriptor *   dmadesc_fblow;
 102         struct pxafb_dma_descriptor *   dmadesc_fbhigh;
 103         struct pxafb_dma_descriptor *   dmadesc_palette;
 104
 105         u_long          screen;         /* physical address of frame buffer */
 106         u_long          palette;        /* physical address of palette memory */
 107         u_int           palette_size;
 108 };
 109
 110 typedef struct vidinfo {
 111     ushort      vl_col;         /* Number of columns (i.e. 640) */
 112     ushort      vl_row;         /* Number of rows (i.e. 480) */
 113     ushort      vl_width;       /* Width of display area in millimeters */
 114     ushort      vl_height;      /* Height of display area in millimeters */
 115
 116     /* LCD configuration register.
 117     */
 118     u_char      vl_clkp;        /* Clock polarity */
 119     u_char      vl_oep;         /* Output Enable polarity */
 120     u_char      vl_hsp;         /* Horizontal Sync polarity */
 121     u_char      vl_vsp;         /* Vertical Sync polarity */
 122     u_char      vl_dp;          /* Data polarity */
 123     u_char      vl_bpix;        /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
 124     u_char      vl_lbw;         /* LCD Bus width, 0 = 4, 1 = 8 */
 125     u_char      vl_splt;        /* Split display, 0 = single-scan, 1 = dual-scan */
 126     u_char      vl_clor;        /* Color, 0 = mono, 1 = color */
 127     u_char      vl_tft;         /* 0 = passive, 1 = TFT */
 128
 129     /* Horizontal control register.  Timing from data sheet.
 130     */
 131     ushort      vl_hpw;         /* Horz sync pulse width */
 132     u_char      vl_blw;         /* Wait before of line */
 133     u_char      vl_elw;         /* Wait end of line */
 134
 135     /* Vertical control register.
 136     */
 137     u_char      vl_vpw;         /* Vertical sync pulse width */
 138     u_char      vl_bfw;         /* Wait before of frame */
 139     u_char      vl_efw;         /* Wait end of frame */
 140
 141     u_char      vl_lcdac;       /* LCD AC timing */
 142
 143     /* PXA LCD controller params
 144      */
 145     struct pxafb_info pxa;
 146
 147 } vidinfo_t;
 148
 149 #define LCD_MONOCHROME  0
 150 #define LCD_COLOR2      1
 151 #define LCD_COLOR4      2
 152 #define LCD_COLOR8      3
 153 #define LCD_COLOR16     4
 154
 155 /*----------------------------------------------------------------------*/
 156 #define CONFIG_PXA_VGA
 157 #ifdef CONFIG_PXA_VGA
 158 /*
 159  *  LCD outputs connected to a video DAC
 160  */
 161
 162 #define LCD_BPP LCD_COLOR8
 163
 164 /* you have to set lccr0 and lccr3 (including pcd) */
 165 #define REG_LCCR0       0x003008f8
 166 #define REG_LCCR3       0x0300FF01
 167
 168 /* 640x480x16 @ 61 Hz */
 169 static vidinfo_t panel_info = {
 170         vl_col:         640,
 171         vl_row:         480,
 172         vl_width:       640,
 173         vl_height:      480,
 174         vl_clkp:        CFG_HIGH,
 175         vl_oep:         CFG_HIGH,
 176         vl_hsp:         CFG_HIGH,
 177         vl_vsp:         CFG_HIGH,
 178         vl_dp:          CFG_HIGH,
 179         vl_bpix:        LCD_BPP,
 180         vl_lbw:         0,
 181         vl_splt:        0,
 182         vl_clor:        0,
 183         vl_lcdac:       0,
 184         vl_tft:         1,
 185         vl_hpw:         40,
 186         vl_blw:         56,
 187         vl_elw:         56,
 188         vl_vpw:         20,
 189         vl_bfw:         8,
 190         vl_efw:         8,
 191 };
 192 #endif /* CONFIG_PXA_VIDEO */
 193
 194 #ifdef CONFIG_SHARP_LM8V31
 195
 196 #define LCD_BPP LCD_COLOR8
 197 #define LCD_INVERT_COLORS       /* Needed for colors to be correct, but why? */
 198
 199 /* you have to set lccr0 and lccr3 (including pcd) */
 200 #define REG_LCCR0       0x0030087C
 201 #define REG_LCCR3       0x0340FF08
 202
 203 static vidinfo_t panel_info = {
 204         vl_col:         640,
 205         vl_row:         480,
 206         vl_width:       157,
 207         vl_height:      118,
 208         vl_clkp:        CFG_HIGH,
 209         vl_oep:         CFG_HIGH,
 210         vl_hsp:         CFG_HIGH,
 211         vl_vsp:         CFG_HIGH,
 212         vl_dp:          CFG_HIGH,
 213         vl_bpix:        LCD_BPP,
 214         vl_lbw:         0,
 215         vl_splt:        1,
 216         vl_clor:        1,
 217         vl_lcdac:       0,
 218         vl_tft:         0,
 219         vl_hpw:         1,
 220         vl_blw:         3,
 221         vl_elw:         3,
 222         vl_vpw:         1,
 223         vl_bfw:         0,
 224         vl_efw:         0,
 225 };
 226 #endif /* CONFIG_SHARP_LM8V31 */
 227
 228 /*----------------------------------------------------------------------*/
 229
 230 /*----------------------------------------------------------------------*/
 231
 232 #if defined(LCD_INFO_BELOW_LOGO)
 233 # define LCD_INFO_X             0
 234 # define LCD_INFO_Y             (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
 235 #elif defined(CONFIG_LCD_LOGO)
 236 # define LCD_INFO_X             (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
 237 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 238 #else
 239 # define LCD_INFO_X             (VIDEO_FONT_WIDTH)
 240 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 241 #endif
 242
 243 #ifndef LCD_BPP
 244 #define LCD_BPP                 LCD_COLOR8
 245 #endif
 246 #ifndef LCD_DF
 247 #define LCD_DF                  1
 248 #endif
 249
 250 #define NBITS(bit_code)         (1 << (bit_code))
 251 #define NCOLORS(bit_code)       (1 << NBITS(bit_code))
 252
 253 static int lcd_line_length;
 254
 255 static int lcd_color_fg;
 256 static int lcd_color_bg;
 257
 258 static char lcd_is_enabled = 0;         /* Indicate that LCD is enabled */
 259
 260 /*
 261  * Frame buffer memory information
 262  */
 263 static void *lcd_base;                  /* Start of framebuffer memory  */
 264 static void *lcd_console_address;       /* Start of console buffer      */
 265
 266
 267 /************************************************************************/
 268 /* ** CONSOLE CONSTANTS                                                 */
 269 /************************************************************************/
 270
 271 #if LCD_BPP == LCD_MONOCHROME
 272
 273 /*
 274  * Simple color definitions
 275  */
 276 #define CONSOLE_COLOR_BLACK      0
 277 #define CONSOLE_COLOR_WHITE      1      /* Must remain last / highest */
 278
 279 #elif   LCD_BPP == LCD_COLOR8
 280
 281 /*
 282  * Simple color definitions
 283  */
 284 #define CONSOLE_COLOR_BLACK      0
 285 #define CONSOLE_COLOR_RED        1
 286 #define CONSOLE_COLOR_GREEN      2
 287 #define CONSOLE_COLOR_YELLOW     3
 288 #define CONSOLE_COLOR_BLUE       4
 289 #define CONSOLE_COLOR_MAGENTA    5
 290 #define CONSOLE_COLOR_CYAN       6
 291 #define CONSOLE_COLOR_GREY      14
 292 #define CONSOLE_COLOR_WHITE     15      /* Must remain last / highest */
 293
 294 #else /* 16 bit */
 295
 296 #define CONSOLE_COLOR_BLACK      0x0000
 297 #define CONSOLE_COLOR_WHITE      0xffff /* Must remain last / highest */
 298
 299 #endif
 300
 301 #if defined(CONFIG_LCD_LOGO) && (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
 302 #error Default Color Map overlaps with Logo Color Map
 303 #endif
 304
 305 /************************************************************************/
 306
 307 #ifndef PAGE_SIZE
 308 #define PAGE_SIZE       4096
 309 #endif
 310
 311
 312 /************************************************************************/
 313 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
 314 /************************************************************************/
 315
 316 #if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
 317 #define CONSOLE_ROWS            ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
 318                                         / VIDEO_FONT_HEIGHT)
 319 #else
 320 #define CONSOLE_ROWS            (panel_info.vl_row / VIDEO_FONT_HEIGHT)
 321 #endif
 322 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 323 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 324 #define CONSOLE_ROW_FIRST       (lcd_console_address)
 325 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 326 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 327                                         - CONSOLE_ROW_SIZE)
 328 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 329 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 330
 331 #if  LCD_BPP == LCD_MONOCHROME
 332 #define COLOR_MASK(c)           ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 333                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 334 #elif LCD_BPP == LCD_COLOR8
 335 #define COLOR_MASK(c)           (c)
 336 #elif LCD_BPP == LCD_COLOR16
 337 #define COLOR_MASK(c)           (c)
 338 #else
 339 #error Unsupported LCD BPP.
 340 #endif
 341
 342 static short console_col;
 343 static short console_row;
 344
 345 /************************************************************************/
 346
 347 ulong   lcd_setmem (ulong addr);
 348
 349 static void     lcd_drawchars  (ushort x, ushort y, uchar *str, int count);
 350 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
 351 static inline void lcd_putc_xy (ushort x, ushort y, uchar  c);
 352
 353 static int      lcd_init (void *lcdbase);
 354 static void     lcd_ctrl_init (void *lcdbase);
 355 static void     lcd_enable (void);
 356 static void    *lcd_logo (void);
 357 #if LCD_BPP == LCD_COLOR8
 358 static void     lcd_setcolreg (ushort regno,
 359                                 ushort red, ushort green, ushort blue);
 360 #endif
 361 #if LCD_BPP == LCD_MONOCHROME
 362 static void     lcd_initcolregs (void);
 363 #endif
 364 static void     lcd_setfgcolor (int color);
 365 static void     lcd_setbgcolor (int color);
 366
 367 #ifdef  NOT_USED_SO_FAR
 368 static int      lcd_getbgcolor (void);
 369 static void     lcd_disable (void);
 370 static void     lcd_getcolreg (ushort regno,
 371                                 ushort *red, ushort *green, ushort *blue);
 372 static int      lcd_getfgcolor (void);
 373 #endif  /* NOT_USED_SO_FAR */
 374
 375
 376 static int pxafb_init_mem(void *lcdbase, vidinfo_t *vid);
 377 static void pxafb_setup_gpio(vidinfo_t *vid);
 378 static void pxafb_enable_controller(vidinfo_t *vid);
 379 static int pxafb_init(vidinfo_t *vid);
 380
 381 /************************************************************************/
 382
 383 /*----------------------------------------------------------------------*/
 384
 385 static void console_scrollup (void)
 386 {
 387         /* Copy up rows ignoring the first one */
 388         memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
 389
 390         /* Clear the last one */
 391         memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
 392 }
 393
 394 /*----------------------------------------------------------------------*/
 395
 396 static inline void console_back (void)
 397 {
 398         if (--console_col < 0) {
 399                 console_col = CONSOLE_COLS-1 ;
 400                 if (--console_row < 0) {
 401                         console_row = 0;
 402                 }
 403         }
 404
 405         lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
 406                      console_row * VIDEO_FONT_HEIGHT,
 407                      ' ');
 408 }
 409
 410 /*----------------------------------------------------------------------*/
 411
 412 static inline void console_newline (void)
 413 {
 414         ++console_row;
 415         console_col = 0;
 416
 417         /* Check if we need to scroll the terminal */
 418         if (console_row >= CONSOLE_ROWS) {
 419                 /* Scroll everything up */
 420                 console_scrollup () ;
 421                 --console_row;
 422         }
 423 }
 424
 425 /*----------------------------------------------------------------------*/
 426
 427 void lcd_putc (const char c)
 428 {
 429         if (!lcd_is_enabled) {
 430                 serial_putc(c);
 431                 return;
 432         }
 433
 434         switch (c) {
 435         case '\r':      console_col = 0;
 436                         return;
 437
 438         case '\n':      console_newline();
 439                         return;
 440
 441         case '\t':      /* Tab (8 chars alignment) */
 442                         console_col |=  8;
 443                         console_col &= ~7;
 444
 445                         if (console_col >= CONSOLE_COLS) {
 446                                 console_newline();
 447                         }
 448                         return;
 449
 450         case '\b':      console_back();
 451                         return;
 452
 453         default:        lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
 454                                      console_row * VIDEO_FONT_HEIGHT,
 455                                      c);
 456                         if (++console_col >= CONSOLE_COLS) {
 457                                 console_newline();
 458                         }
 459                         return;
 460         }
 461         /* NOTREACHED */
 462 }
 463
 464 /*----------------------------------------------------------------------*/
 465
 466 void lcd_puts (const char *s)
 467 {
 468         if (!lcd_is_enabled) {
 469                 serial_puts (s);
 470                 return;
 471         }
 472
 473         while (*s) {
 474                 lcd_putc (*s++);
 475         }
 476 }
 477
 478 /************************************************************************/
 479 /* ** Low-Level Graphics Routines                                       */
 480 /************************************************************************/
 481
 482 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
 483 {
 484         uchar *dest;
 485         ushort off, row;
 486
 487         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
 488         off  = x * (1 << LCD_BPP) % 8;
 489
 490         for (row=0;  row < VIDEO_FONT_HEIGHT;  ++row, dest += lcd_line_length)  {
 491                 uchar *s = str;
 492                 uchar *d = dest;
 493                 int i;
 494
 495 #if LCD_BPP == LCD_MONOCHROME
 496                 uchar rest = *d & -(1 << (8-off));
 497                 uchar sym;
 498 #endif
 499                 for (i=0; i<count; ++i) {
 500                         uchar c, bits;
 501
 502                         c = *s++;
 503                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
 504
 505 #if LCD_BPP == LCD_MONOCHROME
 506                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
 507                                (COLOR_MASK(lcd_color_bg) & ~bits);
 508
 509                         *d++ = rest | (sym >> off);
 510                         rest = sym << (8-off);
 511 #elif LCD_BPP == LCD_COLOR8
 512                         for (c=0; c<8; ++c) {
 513                                 *d++ = (bits & 0x80) ?
 514                                                 lcd_color_fg : lcd_color_bg;
 515                                 bits <<= 1;
 516                         }
 517 #elif LCD_BPP == LCD_COLOR16
 518                         for (c=0; c<16; ++c) {
 519                                 *d++ = (bits & 0x80) ?
 520                                                 lcd_color_fg : lcd_color_bg;
 521                                 bits <<= 1;
 522                         }
 523 #endif
 524                 }
 525
 526 #if LCD_BPP == LCD_MONOCHROME
 527                 *d  = rest | (*d & ((1 << (8-off)) - 1));
 528 #endif
 529         }
 530 }
 531
 532 /*----------------------------------------------------------------------*/
 533
 534 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
 535 {
 536 #if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
 537         lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen (s));
 538 #else
 539         lcd_drawchars (x, y, s, strlen (s));
 540 #endif
 541 }
 542
 543 /*----------------------------------------------------------------------*/
 544
 545 static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
 546 {
 547 #if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
 548         lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
 549 #else
 550         lcd_drawchars (x, y, &c, 1);
 551 #endif
 552 }
 553
 554 /************************************************************************/
 555 /**  Small utility to check that you got the colours right              */
 556 /************************************************************************/
 557 #ifdef LCD_TEST_PATTERN
 558
 559 #define N_BLK_VERT      2
 560 #define N_BLK_HOR       3
 561
 562 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
 563         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
 564         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
 565 };
 566
 567 static void test_pattern (void)
 568 {
 569         ushort v_max  = panel_info.vl_row;
 570         ushort h_max  = panel_info.vl_col;
 571         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
 572         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
 573         ushort v, h;
 574         uchar *pix = (uchar *)lcd_base;
 575
 576         printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
 577                 h_max, v_max, h_step, v_step);
 578
 579         /* WARNING: Code silently assumes 8bit/pixel */
 580         for (v=0; v<v_max; ++v) {
 581                 uchar iy = v / v_step;
 582                 for (h=0; h<h_max; ++h) {
 583                         uchar ix = N_BLK_HOR * iy + (h/h_step);
 584                         *pix++ = test_colors[ix];
 585                 }
 586         }
 587 }
 588 #endif /* LCD_TEST_PATTERN */
 589
 590
 591 /************************************************************************/
 592 /* ** GENERIC Initialization Routines                                   */
 593 /************************************************************************/
 594
 595 int drv_lcd_init (void)
 596 {
 597         DECLARE_GLOBAL_DATA_PTR;
 598
 599         device_t lcddev;
 600         int rc;
 601
 602         lcd_base = (void *)(gd->fb_base);
 603
 604         lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 605
 606         lcd_init (lcd_base);            /* LCD initialization */
 607
 608         /* Device initialization */
 609         memset (&lcddev, 0, sizeof (lcddev));
 610
 611         strcpy (lcddev.name, "lcd");
 612         lcddev.ext   = 0;                       /* No extensions */
 613         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
 614         lcddev.putc  = lcd_putc;                /* 'putc' function */
 615         lcddev.puts  = lcd_puts;                /* 'puts' function */
 616
 617         rc = device_register (&lcddev);
 618         return (rc == 0) ? 1 : rc;
 619 }
 620
 621 /*----------------------------------------------------------------------*/
 622
 623 static int lcd_init (void *lcdbase)
 624 {
 625         /* Initialize the lcd controller */
 626         debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
 627
 628         lcd_ctrl_init (lcdbase);
 629
 630 #if LCD_BPP == LCD_MONOCHROME
 631         /* Setting the palette */
 632         lcd_initcolregs();
 633
 634 #elif LCD_BPP == LCD_COLOR8
 635         /* Setting the palette */
 636         lcd_setcolreg  (CONSOLE_COLOR_BLACK,       0,    0,    0);
 637         lcd_setcolreg  (CONSOLE_COLOR_RED,      0xFF,    0,    0);
 638         lcd_setcolreg  (CONSOLE_COLOR_GREEN,       0, 0xFF,    0);
 639         lcd_setcolreg  (CONSOLE_COLOR_YELLOW,   0xFF, 0xFF,    0);
 640         lcd_setcolreg  (CONSOLE_COLOR_BLUE,     0,    0, 0xFF);
 641         lcd_setcolreg  (CONSOLE_COLOR_MAGENTA,  0xFF,    0, 0xFF);
 642         lcd_setcolreg  (CONSOLE_COLOR_CYAN,        0, 0xFF, 0xFF);
 643         lcd_setcolreg  (CONSOLE_COLOR_GREY,     0xAA, 0xAA, 0xAA);
 644         lcd_setcolreg  (CONSOLE_COLOR_WHITE,    0xFF, 0xFF, 0xFF);
 645 #endif
 646
 647 #define CFG_WHITE_ON_BLACK
 648 #ifndef CFG_WHITE_ON_BLACK
 649         lcd_setfgcolor (CONSOLE_COLOR_BLACK);
 650         lcd_setbgcolor (CONSOLE_COLOR_WHITE);
 651 #else
 652         lcd_setfgcolor (CONSOLE_COLOR_WHITE);
 653         lcd_setbgcolor (CONSOLE_COLOR_BLACK);
 654 #endif  /* CFG_WHITE_ON_BLACK */
 655
 656 #ifdef  LCD_TEST_PATTERN
 657         test_pattern();
 658 #else
 659         /* set framebuffer to background color */
 660         memset ((char *)lcd_base,
 661                 COLOR_MASK(lcd_getbgcolor()),
 662                 lcd_line_length*panel_info.vl_row);
 663 #endif
 664
 665         lcd_enable ();
 666
 667         /* Paint the logo and retrieve LCD base address */
 668         debug ("[LCD] Drawing the logo...\n");
 669         lcd_console_address = lcd_logo ();
 670
 671         /* Initialize the console */
 672         console_col = 0;
 673 #ifdef LCD_INFO_BELOW_LOGO
 674         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
 675 #else
 676         console_row = 1;        /* leave 1 blank line below logo */
 677 #endif
 678         lcd_is_enabled = 1;
 679
 680         return 0;
 681 }
 682
 683
 684 /************************************************************************/
 685 /* ** ROM capable initialization part - needed to reserve FB memory     */
 686 /************************************************************************/
 687
 688 /*
 689  * This is called early in the system initialization to grab memory
 690  * for the LCD controller.
 691  * Returns new address for monitor, after reserving LCD buffer memory
 692  *
 693  * Note that this is running from ROM, so no write access to global data.
 694  */
 695 ulong lcd_setmem (ulong addr)
 696 {
 697         ulong size;
 698         int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
 699
 700         debug ("LCD panel info: %d x %d, %d bit/pix\n",
 701                 panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
 702
 703         /* extra page for dma descriptors and palette */
 704         size = line_length * panel_info.vl_row + PAGE_SIZE;
 705
 706         /* Round up to nearest full page */
 707         size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 708
 709         /* Allocate pages for the frame buffer. */
 710         addr -= size;
 711
 712         debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
 713
 714         return (addr);
 715 }
 716
 717
 718 /************************************************************************/
 719 /* ----------------- chipset specific functions ----------------------- */
 720 /************************************************************************/
 721
 722 static void lcd_ctrl_init (void *lcdbase)
 723 {
 724         pxafb_init_mem(lcdbase, &panel_info);
 725         pxafb_init(&panel_info);
 726         pxafb_setup_gpio(&panel_info);
 727         pxafb_enable_controller(&panel_info);
 728 }
 729
 730 /*----------------------------------------------------------------------*/
 731
 732 #ifdef  NOT_USED_SO_FAR
 733 static void
 734 lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue)
 735 {
 736 }
 737 #endif  /* NOT_USED_SO_FAR */
 738
 739 /*----------------------------------------------------------------------*/
 740
 741 #if LCD_BPP == LCD_COLOR8
 742 static void
 743 lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
 744 {
 745         struct pxafb_info *fbi = &panel_info.pxa;
 746         unsigned short *palette = (unsigned short *)fbi->palette;
 747         u_int val;
 748
 749         if (regno < fbi->palette_size) {
 750                 val = ((red << 8) & 0xf800);
 751                 val |= ((green << 4) & 0x07e0);
 752                 val |= (blue & 0x001f);
 753
 754 #ifdef LCD_INVERT_COLORS
 755                 palette[regno] = ~val;
 756 #else
 757                 palette[regno] = ~val;
 758 #endif
 759         }
 760
 761         debug ("setcolreg: reg %2d @ %p: R=%02X G=%02X B=%02X => %04X\n",
 762                 regno, &palette[regno],
 763                 red, green, blue,
 764                 palette[regno]);
 765 }
 766 #endif  /* LCD_COLOR8 */
 767
 768 /*----------------------------------------------------------------------*/
 769
 770 #if LCD_BPP == LCD_MONOCHROME
 771 static
 772 void lcd_initcolregs (void)
 773 {
 774         volatile immap_t *immr = (immap_t *) CFG_IMMR;
 775         volatile cpm8xx_t *cp = &(immr->im_cpm);
 776         ushort regno;
 777
 778         for (regno = 0; regno < 16; regno++) {
 779                 cp->lcd_cmap[regno * 2] = 0;
 780                 cp->lcd_cmap[(regno * 2) + 1] = regno & 0x0f;
 781         }
 782 }
 783 #endif
 784
 785 /*----------------------------------------------------------------------*/
 786
 787 static void lcd_setfgcolor (int color)
 788 {
 789         lcd_color_fg = color & 0x0F;
 790 }
 791
 792 /*----------------------------------------------------------------------*/
 793
 794 static void lcd_setbgcolor (int color)
 795 {
 796         lcd_color_bg = color & 0x0F;
 797 }
 798
 799 /*----------------------------------------------------------------------*/
 800
 801 #ifdef  NOT_USED_SO_FAR
 802 static int lcd_getfgcolor (void)
 803 {
 804         return lcd_color_fg;
 805 }
 806 #endif  /* NOT_USED_SO_FAR */
 807
 808 /*----------------------------------------------------------------------*/
 809
 810 #ifdef  NOT_USED_SO_FAR
 811 static int lcd_getbgcolor (void)
 812 {
 813         return lcd_color_bg;
 814 }
 815 #endif  /* NOT_USED_SO_FAR */
 816
 817 /*----------------------------------------------------------------------*/
 818
 819 static void lcd_enable (void)
 820 {
 821 }
 822
 823 /*----------------------------------------------------------------------*/
 824
 825 #ifdef  NOT_USED_SO_FAR
 826 static void lcd_disable (void)
 827 {
 828 }
 829 #endif  /* NOT_USED_SO_FAR */
 830
 831
 832 /************************************************************************/
 833 /* ** Chipset depending Bitmap / Logo stuff...                          */
 834 /************************************************************************/
 835
 836 #ifdef CONFIG_LCD_LOGO
 837 static void bitmap_plot (int x, int y)
 838 {
 839         ushort *cmap;
 840         ushort i;
 841         uchar *bmap;
 842         uchar *fb;
 843         struct pxafb_info *fbi = &panel_info.pxa;
 844
 845         debug ("Logo: width %d  height %d  colors %d  cmap %d\n",
 846                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
 847                 sizeof(bmp_logo_palette)/(sizeof(ushort))
 848         );
 849
 850         /* Leave room for default color map */
 851         cmap = (ushort *)fbi->palette;
 852
 853         /* Set color map */
 854         for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
 855                 ushort colreg = bmp_logo_palette[i];
 856 #ifdef  CFG_INVERT_COLORS
 857                 colreg ^= 0xFFF;
 858 #endif
 859                 *cmap++ = colreg;
 860         }
 861
 862         bmap = &bmp_logo_bitmap[0];
 863         fb   = (char *)(lcd_base + y * lcd_line_length + x);
 864
 865         for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
 866                 memcpy (fb, bmap, BMP_LOGO_WIDTH);
 867                 bmap += BMP_LOGO_WIDTH;
 868                 fb   += panel_info.vl_col;
 869         }
 870 }
 871 #endif /* CONFIG_LCD_LOGO */
 872
 873 /*----------------------------------------------------------------------*/
 874
 875 static void *lcd_logo (void)
 876 {
 877 #ifdef CONFIG_LCD_LOGO
 878         DECLARE_GLOBAL_DATA_PTR;
 879         char info[80];
 880         char temp[32];
 881
 882         bitmap_plot (0, 0);
 883 #endif /* CONFIG_LCD_LOGO */
 884
 885 #if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
 886         return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
 887 #else
 888         return ((void *)lcd_base);
 889 #endif  /* CONFIG_LCD_LOGO */
 890 }
 891
 892 /************************************************************************
 893    PXA255 specific routines
 894 ************************************************************************/
 895
 896 static int pxafb_init_mem(void *lcdbase, vidinfo_t *vid)
 897 {
 898         u_long palette_mem_size;
 899         struct pxafb_info *fbi = &vid->pxa;
 900         int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
 901
 902         fbi->screen = (u_long)lcdbase;
 903
 904         fbi->palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
 905         palette_mem_size = fbi->palette_size * sizeof(u16);
 906         debug("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
 907         /* locate palette and descs at end of page following fb */
 908         fbi->palette = (u_long)lcdbase + fb_size + 2*PAGE_SIZE - palette_mem_size;
 909
 910         return 0;
 911 }
 912
 913 static void pxafb_setup_gpio(vidinfo_t *vid)
 914 {
 915         u_long lccr0;
 916
 917         /*
 918          * setup is based on type of panel supported
 919          */
 920
 921         lccr0 = vid->pxa.reg_lccr0;
 922
 923         /* 4 bit interface */
 924         if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
 925         {
 926                 debug("Setting GPIO for 4 bit data\n");
 927                 /* bits 58-61 */
 928                 GPDR1 |= (0xf << 26);
 929                 GAFR1_U = (GAFR1_U & ~(0xff << 20)) | (0xaa << 20);
 930
 931                 /* bits 74-77 */
 932                 GPDR2 |= (0xf << 10);
 933                 GAFR2_L = (GAFR2_L & ~(0xff << 20)) | (0xaa << 20);
 934         }
 935
 936         /* 8 bit interface */
 937         else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
 938             (!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
 939         {
 940                 debug("Setting GPIO for 8 bit data\n");
 941                 /* bits 58-65 */
 942                 GPDR1 |= (0x3f << 26);
 943                 GPDR2 |= (0x3);
 944
 945                 GAFR1_U = (GAFR1_U & ~(0xfff << 20)) | (0xaaa << 20);
 946                 GAFR2_L = (GAFR2_L & ~0xf) | (0xa);
 947
 948                 /* bits 74-77 */
 949                 GPDR2 |= (0xf << 10);
 950                 GAFR2_L = (GAFR2_L & ~(0xff << 20)) | (0xaa << 20);
 951         }
 952
 953         /* 16 bit interface */
 954         else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
 955         {
 956                 debug("Setting GPIO for 16 bit data\n");
 957                 /* bits 58-77 */
 958                 GPDR1 |= (0x3f << 26);
 959                 GPDR2 |= 0x00003fff;
 960
 961                 GAFR1_U = (GAFR1_U & ~(0xfff << 20)) | (0xaaa << 20);
 962                 GAFR2_L = (GAFR2_L & 0xf0000000) | 0x0aaaaaaa;
 963         }
 964         else
 965         {
 966                 printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
 967         }
 968 }
 969
 970 static void pxafb_enable_controller(vidinfo_t *vid)
 971 {
 972         debug("Enabling LCD controller\n");
 973
 974         /* Sequence from 11.7.10 */
 975         LCCR3  = vid->pxa.reg_lccr3;
 976         LCCR2  = vid->pxa.reg_lccr2;
 977         LCCR1  = vid->pxa.reg_lccr1;
 978         LCCR0  = vid->pxa.reg_lccr0 & ~LCCR0_ENB;
 979         FDADR0 = vid->pxa.fdadr0;
 980         FDADR1 = vid->pxa.fdadr1;
 981         LCCR0 |= LCCR0_ENB;
 982
 983         CKEN |= CKEN16_LCD;
 984
 985         debug("FDADR0 = 0x%08x\n", (unsigned int)FDADR0);
 986         debug("FDADR1 = 0x%08x\n", (unsigned int)FDADR1);
 987         debug("LCCR0 = 0x%08x\n", (unsigned int)LCCR0);
 988         debug("LCCR1 = 0x%08x\n", (unsigned int)LCCR1);
 989         debug("LCCR2 = 0x%08x\n", (unsigned int)LCCR2);
 990         debug("LCCR3 = 0x%08x\n", (unsigned int)LCCR3);
 991 }
 992
 993 static int pxafb_init(vidinfo_t *vid)
 994 {
 995         struct pxafb_info *fbi = &vid->pxa;
 996
 997         debug("Configuring PXA LCD\n");
 998
 999         fbi->reg_lccr0 = REG_LCCR0;
1000         fbi->reg_lccr3 = REG_LCCR3;
1001
1002         debug("vid: vl_col=%d hslen=%d lm=%d rm=%d\n",
1003                 vid->vl_col, vid->vl_hpw,
1004                 vid->vl_blw, vid->vl_elw);
1005         debug("vid: vl_row=%d vslen=%d um=%d bm=%d\n",
1006                 vid->vl_row, vid->vl_vpw,
1007                 vid->vl_bfw, vid->vl_efw);
1008
1009         fbi->reg_lccr1 =
1010                 LCCR1_DisWdth(vid->vl_col) +
1011                 LCCR1_HorSnchWdth(vid->vl_hpw) +
1012                 LCCR1_BegLnDel(vid->vl_blw) +
1013                 LCCR1_EndLnDel(vid->vl_elw);
1014
1015         fbi->reg_lccr2 =
1016                 LCCR2_DisHght(vid->vl_row) +
1017                 LCCR2_VrtSnchWdth(vid->vl_vpw) +
1018                 LCCR2_BegFrmDel(vid->vl_bfw) +
1019                 LCCR2_EndFrmDel(vid->vl_efw);
1020
1021         fbi->reg_lccr3 = REG_LCCR3 & ~(LCCR3_HSP | LCCR3_VSP);
1022         fbi->reg_lccr3 |=
1023                   (vid->vl_hsp ? LCCR3_HorSnchL : LCCR3_HorSnchH)
1024                 | (vid->vl_vsp ? LCCR3_VrtSnchL : LCCR3_VrtSnchH);
1025
1026
1027         /* setup dma descriptors */
1028         fbi->dmadesc_fblow = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
1029         fbi->dmadesc_fbhigh = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
1030         fbi->dmadesc_palette = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
1031
1032         #define BYTES_PER_PANEL ((fbi->reg_lccr0 & LCCR0_SDS) ? \
1033                 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8 / 2) : \
1034                 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8))
1035
1036         /* populate descriptors */
1037         fbi->dmadesc_fblow->fdadr = (u_long)fbi->dmadesc_fblow;
1038         fbi->dmadesc_fblow->fsadr = fbi->screen + BYTES_PER_PANEL;
1039         fbi->dmadesc_fblow->fidr  = 0;
1040         fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
1041
1042         fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
1043
1044         fbi->dmadesc_fbhigh->fsadr = fbi->screen;
1045         fbi->dmadesc_fbhigh->fidr = 0;
1046         fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL;
1047
1048         fbi->dmadesc_palette->fsadr = fbi->palette;
1049         fbi->dmadesc_palette->fidr  = 0;
1050         fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
1051
1052         if( NBITS(vid->vl_bpix) < 12)
1053         {
1054                 /* assume any mode with <12 bpp is palette driven */
1055                 fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
1056                 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
1057                 /* flips back and forth between pal and fbhigh */
1058                 fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
1059         }
1060         else
1061         {
1062                 /* palette shouldn't be loaded in true-color mode */
1063                 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
1064                 fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */
1065         }
1066
1067         debug("fbi->dmadesc_fblow = 0x%lx\n", (u_long)fbi->dmadesc_fblow);
1068         debug("fbi->dmadesc_fbhigh = 0x%lx\n", (u_long)fbi->dmadesc_fbhigh);
1069         debug("fbi->dmadesc_palette = 0x%lx\n", (u_long)fbi->dmadesc_palette);
1070
1071         debug("fbi->dmadesc_fblow->fdadr = 0x%lx\n", fbi->dmadesc_fblow->fdadr);
1072         debug("fbi->dmadesc_fbhigh->fdadr = 0x%lx\n", fbi->dmadesc_fbhigh->fdadr);
1073         debug("fbi->dmadesc_palette->fdadr = 0x%lx\n", fbi->dmadesc_palette->fdadr);
1074
1075         debug("fbi->dmadesc_fblow->fsadr = 0x%lx\n", fbi->dmadesc_fblow->fsadr);
1076         debug("fbi->dmadesc_fbhigh->fsadr = 0x%lx\n", fbi->dmadesc_fbhigh->fsadr);
1077         debug("fbi->dmadesc_palette->fsadr = 0x%lx\n", fbi->dmadesc_palette->fsadr);
1078
1079         debug("fbi->dmadesc_fblow->ldcmd = 0x%lx\n", fbi->dmadesc_fblow->ldcmd);
1080         debug("fbi->dmadesc_fbhigh->ldcmd = 0x%lx\n", fbi->dmadesc_fbhigh->ldcmd);
1081         debug("fbi->dmadesc_palette->ldcmd = 0x%lx\n", fbi->dmadesc_palette->ldcmd);
1082
1083         return 0;
1084 }
1085
1086 /************************************************************************/
1087 /************************************************************************/
1088
1089 #endif /* CONFIG_LCD */