include/lcd.h

   1 /*
   2  * MPC823 and PXA LCD Controller
   3  *
   4  * Modeled after video interface by Paolo Scaffardi
   5  *
   6  *
   7  * (C) Copyright 2001
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #ifndef _LCD_H_
  30 #define _LCD_H_
  31
  32 extern char lcd_is_enabled;
  33
  34 extern int lcd_line_length;
  35 extern int lcd_color_fg;
  36 extern int lcd_color_bg;
  37
  38 /*
  39  * Frame buffer memory information
  40  */
  41 extern void *lcd_base;          /* Start of framebuffer memory  */
  42 extern void *lcd_console_address;       /* Start of console buffer      */
  43
  44 extern short console_col;
  45 extern short console_row;
  46
  47 #if defined CONFIG_MPC823
  48 /*
  49  * LCD controller stucture for MPC823 CPU
  50  */
  51 typedef struct vidinfo {
  52         ushort  vl_col;         /* Number of columns (i.e. 640) */
  53         ushort  vl_row;         /* Number of rows (i.e. 480) */
  54         ushort  vl_width;       /* Width of display area in millimeters */
  55         ushort  vl_height;      /* Height of display area in millimeters */
  56
  57         /* LCD configuration register */
  58         u_char  vl_clkp;        /* Clock polarity */
  59         u_char  vl_oep;         /* Output Enable polarity */
  60         u_char  vl_hsp;         /* Horizontal Sync polarity */
  61         u_char  vl_vsp;         /* Vertical Sync polarity */
  62         u_char  vl_dp;          /* Data polarity */
  63         u_char  vl_bpix;        /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
  64         u_char  vl_lbw;         /* LCD Bus width, 0 = 4, 1 = 8 */
  65         u_char  vl_splt;        /* Split display, 0 = single-scan, 1 = dual-scan */
  66         u_char  vl_clor;        /* Color, 0 = mono, 1 = color */
  67         u_char  vl_tft;         /* 0 = passive, 1 = TFT */
  68
  69         /* Horizontal control register. Timing from data sheet */
  70         ushort  vl_wbl;         /* Wait between lines */
  71
  72         /* Vertical control register */
  73         u_char  vl_vpw;         /* Vertical sync pulse width */
  74         u_char  vl_lcdac;       /* LCD AC timing */
  75         u_char  vl_wbf;         /* Wait between frames */
  76 } vidinfo_t;
  77
  78 extern vidinfo_t panel_info;
  79
  80 #elif defined CONFIG_PXA250
  81 /*
  82  * PXA LCD DMA descriptor
  83  */
  84 struct pxafb_dma_descriptor {
  85         u_long  fdadr;          /* Frame descriptor address register */
  86         u_long  fsadr;          /* Frame source address register */
  87         u_long  fidr;           /* Frame ID register */
  88         u_long  ldcmd;          /* Command register */
  89 };
  90
  91 /*
  92  * PXA LCD info
  93  */
  94 struct pxafb_info {
  95
  96         /* Misc registers */
  97         u_long  reg_lccr3;
  98         u_long  reg_lccr2;
  99         u_long  reg_lccr1;
 100         u_long  reg_lccr0;
 101         u_long  fdadr0;
 102         u_long  fdadr1;
 103
 104         /* DMA descriptors */
 105         struct  pxafb_dma_descriptor *  dmadesc_fblow;
 106         struct  pxafb_dma_descriptor *  dmadesc_fbhigh;
 107         struct  pxafb_dma_descriptor *  dmadesc_palette;
 108
 109         u_long  screen;         /* physical address of frame buffer */
 110         u_long  palette;        /* physical address of palette memory */
 111         u_int   palette_size;
 112 };
 113
 114 /*
 115  * LCD controller stucture for PXA CPU
 116  */
 117 typedef struct vidinfo {
 118         ushort  vl_col;         /* Number of columns (i.e. 640) */
 119         ushort  vl_row;         /* Number of rows (i.e. 480) */
 120         ushort  vl_width;       /* Width of display area in millimeters */
 121         ushort  vl_height;      /* Height of display area in millimeters */
 122
 123         /* LCD configuration register */
 124         u_char  vl_clkp;        /* Clock polarity */
 125         u_char  vl_oep;         /* Output Enable polarity */
 126         u_char  vl_hsp;         /* Horizontal Sync polarity */
 127         u_char  vl_vsp;         /* Vertical Sync polarity */
 128         u_char  vl_dp;          /* Data polarity */
 129         u_char  vl_bpix;        /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
 130         u_char  vl_lbw;         /* LCD Bus width, 0 = 4, 1 = 8 */
 131         u_char  vl_splt;        /* Split display, 0 = single-scan, 1 = dual-scan */
 132         u_char  vl_clor;        /* Color, 0 = mono, 1 = color */
 133         u_char  vl_tft;         /* 0 = passive, 1 = TFT */
 134
 135         /* Horizontal control register. Timing from data sheet */
 136         ushort  vl_hpw;         /* Horz sync pulse width */
 137         u_char  vl_blw;         /* Wait before of line */
 138         u_char  vl_elw;         /* Wait end of line */
 139
 140         /* Vertical control register. */
 141         u_char  vl_vpw;         /* Vertical sync pulse width */
 142         u_char  vl_bfw;         /* Wait before of frame */
 143         u_char  vl_efw;         /* Wait end of frame */
 144
 145         /* PXA LCD controller params */
 146         struct  pxafb_info pxa;
 147 } vidinfo_t;
 148
 149 extern vidinfo_t panel_info;
 150
 151 #elif defined(CONFIG_ATMEL_LCD)
 152
 153 typedef struct vidinfo {
 154         u_long vl_col;          /* Number of columns (i.e. 640) */
 155         u_long vl_row;          /* Number of rows (i.e. 480) */
 156         u_long vl_clk;  /* pixel clock in ps    */
 157
 158         /* LCD configuration register */
 159         u_long vl_sync;         /* Horizontal / vertical sync */
 160         u_long vl_bpix;         /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
 161         u_long vl_tft;          /* 0 = passive, 1 = TFT */
 162
 163         /* Horizontal control register. */
 164         u_long vl_hsync_len;    /* Length of horizontal sync */
 165         u_long vl_left_margin;  /* Time from sync to picture */
 166         u_long vl_right_margin; /* Time from picture to sync */
 167
 168         /* Vertical control register. */
 169         u_long vl_vsync_len;    /* Length of vertical sync */
 170         u_long vl_upper_margin; /* Time from sync to picture */
 171         u_long vl_lower_margin; /* Time from picture to sync */
 172
 173         u_long  mmio;           /* Memory mapped registers */
 174 } vidinfo_t;
 175
 176 extern vidinfo_t panel_info;
 177
 178 #else
 179
 180 typedef struct vidinfo {
 181         ushort  vl_col;         /* Number of columns (i.e. 160) */
 182         ushort  vl_row;         /* Number of rows (i.e. 100) */
 183
 184         u_char  vl_bpix;        /* Bits per pixel, 0 = 1 */
 185
 186         ushort  *cmap;          /* Pointer to the colormap */
 187
 188         void    *priv;          /* Pointer to driver-specific data */
 189 } vidinfo_t;
 190
 191 #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 or CONFIG_ATMEL_LCD */
 192
 193 /* Video functions */
 194
 195 #if defined(CONFIG_RBC823)
 196 void    lcd_disable     (void);
 197 #endif
 198
 199
 200 /* int  lcd_init        (void *lcdbase); */
 201 void    lcd_putc        (const char c);
 202 void    lcd_puts        (const char *s);
 203 void    lcd_printf      (const char *fmt, ...);
 204
 205 /* Allow boards to customize the information displayed */
 206 void lcd_show_board_info(void);
 207
 208 /************************************************************************/
 209 /* ** BITMAP DISPLAY SUPPORT                                            */
 210 /************************************************************************/
 211 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 212 # include <bmp_layout.h>
 213 # include <asm/byteorder.h>
 214 #endif
 215
 216 /*
 217  *  Information about displays we are using. This is for configuring
 218  *  the LCD controller and memory allocation. Someone has to know what
 219  *  is connected, as we can't autodetect anything.
 220  */
 221 #define CONFIG_SYS_HIGH 0       /* Pins are active high                 */
 222 #define CONFIG_SYS_LOW          1       /* Pins are active low                  */
 223
 224 #define LCD_MONOCHROME  0
 225 #define LCD_COLOR2      1
 226 #define LCD_COLOR4      2
 227 #define LCD_COLOR8      3
 228 #define LCD_COLOR16     4
 229
 230 /*----------------------------------------------------------------------*/
 231 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
 232 # define LCD_INFO_X             0
 233 # define LCD_INFO_Y             (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
 234 #elif defined(CONFIG_LCD_LOGO)
 235 # define LCD_INFO_X             (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
 236 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 237 #else
 238 # define LCD_INFO_X             (VIDEO_FONT_WIDTH)
 239 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 240 #endif
 241
 242 /* Default to 8bpp if bit depth not specified */
 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 /* Calculate nr. of bits per pixel  and nr. of colors */
 251 #define NBITS(bit_code)         (1 << (bit_code))
 252 #define NCOLORS(bit_code)       (1 << NBITS(bit_code))
 253
 254 /************************************************************************/
 255 /* ** CONSOLE CONSTANTS                                                 */
 256 /************************************************************************/
 257 #if LCD_BPP == LCD_MONOCHROME
 258
 259 /*
 260  * Simple black/white definitions
 261  */
 262 # define CONSOLE_COLOR_BLACK    0
 263 # define CONSOLE_COLOR_WHITE    1       /* Must remain last / highest   */
 264
 265 #elif LCD_BPP == LCD_COLOR8
 266
 267 /*
 268  * 8bpp color definitions
 269  */
 270 # define CONSOLE_COLOR_BLACK    0
 271 # define CONSOLE_COLOR_RED      1
 272 # define CONSOLE_COLOR_GREEN    2
 273 # define CONSOLE_COLOR_YELLOW   3
 274 # define CONSOLE_COLOR_BLUE     4
 275 # define CONSOLE_COLOR_MAGENTA  5
 276 # define CONSOLE_COLOR_CYAN     6
 277 # define CONSOLE_COLOR_GREY     14
 278 # define CONSOLE_COLOR_WHITE    15      /* Must remain last / highest   */
 279
 280 #else
 281
 282 /*
 283  * 16bpp color definitions
 284  */
 285 # define CONSOLE_COLOR_BLACK    0x0000
 286 # define CONSOLE_COLOR_WHITE    0xffff  /* Must remain last / highest   */
 287
 288 #endif /* color definitions */
 289
 290 /************************************************************************/
 291 #ifndef PAGE_SIZE
 292 # define PAGE_SIZE      4096
 293 #endif
 294
 295 /************************************************************************/
 296 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
 297 /************************************************************************/
 298 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 299 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
 300                                         / VIDEO_FONT_HEIGHT)
 301 #else
 302 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
 303 #endif
 304
 305 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 306 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 307 #define CONSOLE_ROW_FIRST       (lcd_console_address)
 308 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 309 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 310                                         - CONSOLE_ROW_SIZE)
 311 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 312 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 313
 314 #if LCD_BPP == LCD_MONOCHROME
 315 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 316                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 317 #elif LCD_BPP == LCD_COLOR8
 318 # define COLOR_MASK(c)          (c)
 319 #else
 320 # error Unsupported LCD BPP.
 321 #endif
 322
 323 /************************************************************************/
 324
 325 #endif  /* _LCD_H_ */