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_MCC200)
 152 typedef struct vidinfo {
 153         ushort  vl_col;         /* Number of columns (i.e. 160) */
 154         ushort  vl_row;         /* Number of rows (i.e. 100) */
 155
 156         u_char  vl_bpix;        /* Bits per pixel, 0 = 1 */
 157 } vidinfo_t;
 158 #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 */
 159
 160 /* Video functions */
 161
 162 #if defined(CONFIG_RBC823)
 163 void    lcd_disable     (void);
 164 #endif
 165
 166
 167 /* int  lcd_init        (void *lcdbase); */
 168 void    lcd_putc        (const char c);
 169 void    lcd_puts        (const char *s);
 170 void    lcd_printf      (const char *fmt, ...);
 171
 172
 173 /************************************************************************/
 174 /* ** BITMAP DISPLAY SUPPORT                                            */
 175 /************************************************************************/
 176 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 177 # include <bmp_layout.h>
 178 # include <asm/byteorder.h>
 179 #endif
 180
 181 /*
 182  *  Information about displays we are using. This is for configuring
 183  *  the LCD controller and memory allocation. Someone has to know what
 184  *  is connected, as we can't autodetect anything.
 185  */
 186 #define CFG_HIGH        0       /* Pins are active high                 */
 187 #define CFG_LOW         1       /* Pins are active low                  */
 188
 189 #define LCD_MONOCHROME  0
 190 #define LCD_COLOR2      1
 191 #define LCD_COLOR4      2
 192 #define LCD_COLOR8      3
 193 #define LCD_COLOR16     4
 194
 195 /*----------------------------------------------------------------------*/
 196 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
 197 # define LCD_INFO_X             0
 198 # define LCD_INFO_Y             (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
 199 #elif defined(CONFIG_LCD_LOGO)
 200 # define LCD_INFO_X             (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
 201 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 202 #else
 203 # define LCD_INFO_X             (VIDEO_FONT_WIDTH)
 204 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 205 #endif
 206
 207 /* Default to 8bpp if bit depth not specified */
 208 #ifndef LCD_BPP
 209 # define LCD_BPP                        LCD_COLOR8
 210 #endif
 211 #ifndef LCD_DF
 212 # define LCD_DF                 1
 213 #endif
 214
 215 /* Calculate nr. of bits per pixel  and nr. of colors */
 216 #define NBITS(bit_code)         (1 << (bit_code))
 217 #define NCOLORS(bit_code)       (1 << NBITS(bit_code))
 218
 219 /************************************************************************/
 220 /* ** CONSOLE CONSTANTS                                                 */
 221 /************************************************************************/
 222 #if LCD_BPP == LCD_MONOCHROME
 223
 224 /*
 225  * Simple black/white definitions
 226  */
 227 # define CONSOLE_COLOR_BLACK    0
 228 # define CONSOLE_COLOR_WHITE    1       /* Must remain last / highest   */
 229
 230 #elif LCD_BPP == LCD_COLOR8
 231
 232 /*
 233  * 8bpp color definitions
 234  */
 235 # define CONSOLE_COLOR_BLACK    0
 236 # define CONSOLE_COLOR_RED      1
 237 # define CONSOLE_COLOR_GREEN    2
 238 # define CONSOLE_COLOR_YELLOW   3
 239 # define CONSOLE_COLOR_BLUE     4
 240 # define CONSOLE_COLOR_MAGENTA  5
 241 # define CONSOLE_COLOR_CYAN     6
 242 # define CONSOLE_COLOR_GREY     14
 243 # define CONSOLE_COLOR_WHITE    15      /* Must remain last / highest   */
 244
 245 #else
 246
 247 /*
 248  * 16bpp color definitions
 249  */
 250 # define CONSOLE_COLOR_BLACK    0x0000
 251 # define CONSOLE_COLOR_WHITE    0xffff  /* Must remain last / highest   */
 252
 253 #endif /* color definitions */
 254
 255 /************************************************************************/
 256 #ifndef PAGE_SIZE
 257 # define PAGE_SIZE      4096
 258 #endif
 259
 260 /************************************************************************/
 261 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
 262 /************************************************************************/
 263 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 264 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
 265                                         / VIDEO_FONT_HEIGHT)
 266 #else
 267 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
 268 #endif
 269
 270 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 271 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 272 #define CONSOLE_ROW_FIRST       (lcd_console_address)
 273 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 274 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 275                                         - CONSOLE_ROW_SIZE)
 276 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 277 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 278
 279 #if LCD_BPP == LCD_MONOCHROME
 280 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 281                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 282 #elif LCD_BPP == LCD_COLOR8
 283 # define COLOR_MASK(c)          (c)
 284 #else
 285 # error Unsupported LCD BPP.
 286 #endif
 287
 288 /************************************************************************/
 289
 290 #endif  /* _LCD_H_ */