board/esd/common/lcd.c

   1 /*
   2  * (C) Copyright 2003-2004
   3  * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4  *
   5  * (C) Copyright 2005
   6  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include "lcd.h"
  28
  29
  30 extern int video_display_bitmap (ulong, int, int);
  31
  32
  33 int palette_index;
  34 int palette_value;
  35 int lcd_depth;
  36 unsigned char *glob_lcd_reg;
  37 unsigned char *glob_lcd_mem;
  38
  39 #ifdef CFG_LCD_ENDIAN
  40 void lcd_setup(int lcd, int config)
  41 {
  42         if (lcd == 0) {
  43                 /*
  44                  * Set endianess and reset lcd controller 0 (small)
  45                  */
  46                 out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD0_RST); /* set reset to low */
  47                 udelay(10); /* wait 10us */
  48                 if (config == 1) {
  49                         out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
  50                 } else {
  51                         out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
  52                 }
  53                 udelay(10); /* wait 10us */
  54                 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD0_RST); /* set reset to high */
  55         } else {
  56                 /*
  57                  * Set endianess and reset lcd controller 1 (big)
  58                  */
  59                 out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD1_RST); /* set reset to low */
  60                 udelay(10); /* wait 10us */
  61                 if (config == 1) {
  62                         out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
  63                 } else {
  64                         out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
  65                 }
  66                 udelay(10); /* wait 10us */
  67                 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD1_RST); /* set reset to high */
  68         }
  69
  70         /*
  71          * CFG_LCD_ENDIAN may also be FPGA_RESET, so set inactive
  72          */
  73         out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* set reset high again */
  74 }
  75 #endif /* #ifdef CFG_LCD_ENDIAN */
  76
  77
  78 void lcd_bmp(uchar *logo_bmp)
  79 {
  80         int i;
  81         uchar *ptr;
  82         ushort *ptr2;
  83         ushort val;
  84         unsigned char *dst;
  85         int x, y;
  86         int width, height, bpp, colors, line_size;
  87         int header_size;
  88         unsigned char *bmp;
  89         unsigned char r, g, b;
  90         BITMAPINFOHEADER *bm_info;
  91         ulong len;
  92         int do_free = 0;
  93
  94         /*
  95          * Check for bmp mark 'BM'
  96          */
  97         if (*(ushort *)logo_bmp != 0x424d) {
  98
  99                 /*
 100                  * Decompress bmp image
 101                  */
 102                 len = CFG_LCD_LOGO_MAX_SIZE;
 103                 dst = malloc(CFG_LCD_LOGO_MAX_SIZE);
 104                 do_free = 1;
 105                 if (gunzip(dst, CFG_LCD_LOGO_MAX_SIZE, (uchar *)logo_bmp, &len) != 0) {
 106                         return;
 107                 }
 108
 109                 /*
 110                  * Check for bmp mark 'BM'
 111                  */
 112                 if (*(ushort *)dst != 0x424d) {
 113                         printf("LCD: Unknown image format!\n");
 114                         free(dst);
 115                         return;
 116                 }
 117         } else {
 118                 /*
 119                  * Uncompressed BMP image, just use this pointer
 120                  */
 121                 dst = (uchar *)logo_bmp;
 122         }
 123
 124         /*
 125          * Get image info from bmp-header
 126          */
 127         bm_info = (BITMAPINFOHEADER *)(dst + 14);
 128         bpp = LOAD_SHORT(bm_info->biBitCount);
 129         width = LOAD_LONG(bm_info->biWidth);
 130         height = LOAD_LONG(bm_info->biHeight);
 131         switch (bpp) {
 132         case 1:
 133                 colors = 1;
 134                 line_size = width >> 3;
 135                 break;
 136         case 4:
 137                 colors = 16;
 138                 line_size = width >> 1;
 139                 break;
 140         case 8:
 141                 colors = 256;
 142                 line_size = width;
 143                 break;
 144         case 24:
 145                 colors = 0;
 146                 line_size = width * 3;
 147                 break;
 148         default:
 149                 printf("LCD: Unknown bpp (%d) im image!\n", bpp);
 150                 free(dst);
 151                 return;
 152         }
 153         printf(" (%d*%d, %dbpp)\n", width, height, bpp);
 154
 155         /*
 156          * Write color palette
 157          */
 158         if ((colors <= 256) && (lcd_depth <= 8)) {
 159                 ptr = (unsigned char *)(dst + 14 + 40);
 160                 for (i=0; i<colors; i++) {
 161                         b = *ptr++;
 162                         g = *ptr++;
 163                         r = *ptr++;
 164                         ptr++;
 165                         S1D_WRITE_PALETTE(glob_lcd_reg, i, r, g, b);
 166                 }
 167         }
 168
 169         /*
 170          * Write bitmap data into framebuffer
 171          */
 172         ptr = glob_lcd_mem;
 173         ptr2 = (ushort *)glob_lcd_mem;
 174         header_size = 14 + 40 + 4*colors;          /* skip bmp header */
 175         for (y=0; y<height; y++) {
 176                 bmp = &dst[(height-1-y)*line_size + header_size];
 177                 if (lcd_depth == 16) {
 178                         if (bpp == 24) {
 179                                 for (x=0; x<width; x++) {
 180                                         /*
 181                                          * Generate epson 16bpp fb-format from 24bpp image
 182                                          */
 183                                         b = *bmp++ >> 3;
 184                                         g = *bmp++ >> 2;
 185                                         r = *bmp++ >> 3;
 186                                         val = ((r & 0x1f) << 11) | ((g & 0x3f) << 5) | (b & 0x1f);
 187                                         *ptr2++ = val;
 188                                 }
 189                         } else if (bpp == 8) {
 190                                 for (x=0; x<line_size; x++) {
 191                                         /* query rgb value from palette */
 192                                         ptr = (unsigned char *)(dst + 14 + 40) ;
 193                                         ptr += (*bmp++) << 2;
 194                                         b = *ptr++ >> 3;
 195                                         g = *ptr++ >> 2;
 196                                         r = *ptr++ >> 3;
 197                                         val = ((r & 0x1f) << 11) | ((g & 0x3f) << 5) | (b & 0x1f);
 198                                         *ptr2++ = val;
 199                                 }
 200                         }
 201                 } else {
 202                         for (x=0; x<line_size; x++) {
 203                                 *ptr++ = *bmp++;
 204                         }
 205                 }
 206         }
 207
 208         if (do_free) {
 209                 free(dst);
 210         }
 211 }
 212
 213
 214 void lcd_init(uchar *lcd_reg, uchar *lcd_mem, S1D_REGS *regs, int reg_count,
 215               uchar *logo_bmp, ulong len)
 216 {
 217         int i;
 218         ushort s1dReg;
 219         uchar s1dValue;
 220         int reg_byte_swap;
 221
 222         /*
 223          * Detect epson
 224          */
 225         if (lcd_reg[0] == 0x1c) {
 226                 /*
 227                  * Big epson detected
 228                  */
 229                 reg_byte_swap = FALSE;
 230                 palette_index = 0x1e2;
 231                 palette_value = 0x1e4;
 232                 lcd_depth = 16;
 233                 puts("LCD:   S1D13806");
 234         } else if (lcd_reg[1] == 0x1c) {
 235                 /*
 236                  * Big epson detected (with register swap bug)
 237                  */
 238                 reg_byte_swap = TRUE;
 239                 palette_index = 0x1e3;
 240                 palette_value = 0x1e5;
 241                 lcd_depth = 16;
 242                 puts("LCD:   S1D13806S");
 243         } else if (lcd_reg[0] == 0x18) {
 244                 /*
 245                  * Small epson detected (704)
 246                  */
 247                 reg_byte_swap = FALSE;
 248                 palette_index = 0x15;
 249                 palette_value = 0x17;
 250                 lcd_depth = 8;
 251                 puts("LCD:   S1D13704");
 252         } else if (lcd_reg[0x10000] == 0x24) {
 253                 /*
 254                  * Small epson detected (705)
 255                  */
 256                 reg_byte_swap = FALSE;
 257                 palette_index = 0x15;
 258                 palette_value = 0x17;
 259                 lcd_depth = 8;
 260                 lcd_reg += 0x10000; /* add offset for 705 regs */
 261                 puts("LCD:   S1D13705");
 262         } else {
 263                 puts("LCD:   No controller detected!\n");
 264                 return;
 265         }
 266
 267         /*
 268          * Setup lcd controller regs
 269          */
 270         for (i = 0; i<reg_count; i++) {
 271                 s1dReg = regs[i].Index;
 272                 if (reg_byte_swap) {
 273                         if ((s1dReg & 0x0001) == 0)
 274                                 s1dReg |= 0x0001;
 275                         else
 276                                 s1dReg &= ~0x0001;
 277                 }
 278                 s1dValue = regs[i].Value;
 279                 lcd_reg[s1dReg] = s1dValue;
 280         }
 281
 282         /*
 283          * Save reg & mem pointer for later usage (e.g. bmp command)
 284          */
 285         glob_lcd_reg = lcd_reg;
 286         glob_lcd_mem = lcd_mem;
 287
 288         /*
 289          * Display bmp image
 290          */
 291         lcd_bmp(logo_bmp);
 292 }
 293
 294 #ifdef CONFIG_VIDEO_SM501
 295 int do_esdbmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 296 {
 297         ulong addr;
 298         char *str;
 299
 300         if (argc != 2) {
 301                 printf ("Usage:\n%s\n", cmdtp->usage);
 302                 return 1;
 303         }
 304
 305         addr = simple_strtoul(argv[1], NULL, 16);
 306
 307         str = getenv("bd_type");
 308         if ((strcmp(str, "ppc221") == 0) || (strcmp(str, "ppc231") == 0)) {
 309                 /*
 310                  * SM501 available, use standard bmp command
 311                  */
 312                 return (video_display_bitmap(addr, 0, 0));
 313         } else {
 314                 /*
 315                  * No SM501 available, use esd epson bmp command
 316                  */
 317                 lcd_bmp((uchar *)addr);
 318                 return 0;
 319         }
 320 }
 321
 322 U_BOOT_CMD(
 323         esdbmp, 2,      1,      do_esdbmp,
 324         "esdbmp   - display BMP image\n",
 325         "<imageAddr> - display image\n"
 326 );
 327 #endif