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 extern struct vidinfo panel_info;
  47
  48 extern void lcd_ctrl_init (void *lcdbase);
  49 extern void lcd_enable (void);
  50
  51 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
  52 extern void lcd_setcolreg (ushort regno,
  53                                 ushort red, ushort green, ushort blue);
  54 extern void lcd_initcolregs (void);
  55
  56 /* gunzip_bmp used if CONFIG_VIDEO_BMP_GZIP */
  57 extern struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp);
  58
  59 #if defined CONFIG_MPC823
  60 /*
  61  * LCD controller stucture for MPC823 CPU
  62  */
  63 typedef struct vidinfo {
  64         ushort  vl_col;         /* Number of columns (i.e. 640) */
  65         ushort  vl_row;         /* Number of rows (i.e. 480) */
  66         ushort  vl_width;       /* Width of display area in millimeters */
  67         ushort  vl_height;      /* Height of display area in millimeters */
  68
  69         /* LCD configuration register */
  70         u_char  vl_clkp;        /* Clock polarity */
  71         u_char  vl_oep;         /* Output Enable polarity */
  72         u_char  vl_hsp;         /* Horizontal Sync polarity */
  73         u_char  vl_vsp;         /* Vertical Sync polarity */
  74         u_char  vl_dp;          /* Data polarity */
  75         u_char  vl_bpix;        /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8 */
  76         u_char  vl_lbw;         /* LCD Bus width, 0 = 4, 1 = 8 */
  77         u_char  vl_splt;        /* Split display, 0 = single-scan, 1 = dual-scan */
  78         u_char  vl_clor;        /* Color, 0 = mono, 1 = color */
  79         u_char  vl_tft;         /* 0 = passive, 1 = TFT */
  80
  81         /* Horizontal control register. Timing from data sheet */
  82         ushort  vl_wbl;         /* Wait between lines */
  83
  84         /* Vertical control register */
  85         u_char  vl_vpw;         /* Vertical sync pulse width */
  86         u_char  vl_lcdac;       /* LCD AC timing */
  87         u_char  vl_wbf;         /* Wait between frames */
  88 } vidinfo_t;
  89
  90 #elif defined CONFIG_PXA250 || defined CONFIG_PXA27X || defined CONFIG_CPU_MONAHANS
  91 /*
  92  * PXA LCD DMA descriptor
  93  */
  94 struct pxafb_dma_descriptor {
  95         u_long  fdadr;          /* Frame descriptor address register */
  96         u_long  fsadr;          /* Frame source address register */
  97         u_long  fidr;           /* Frame ID register */
  98         u_long  ldcmd;          /* Command register */
  99 };
 100
 101 /*
 102  * PXA LCD info
 103  */
 104 struct pxafb_info {
 105
 106         /* Misc registers */
 107         u_long  reg_lccr3;
 108         u_long  reg_lccr2;
 109         u_long  reg_lccr1;
 110         u_long  reg_lccr0;
 111         u_long  fdadr0;
 112         u_long  fdadr1;
 113
 114         /* DMA descriptors */
 115         struct  pxafb_dma_descriptor *  dmadesc_fblow;
 116         struct  pxafb_dma_descriptor *  dmadesc_fbhigh;
 117         struct  pxafb_dma_descriptor *  dmadesc_palette;
 118
 119         u_long  screen;         /* physical address of frame buffer */
 120         u_long  palette;        /* physical address of palette memory */
 121         u_int   palette_size;
 122 };
 123
 124 /*
 125  * LCD controller stucture for PXA CPU
 126  */
 127 typedef struct vidinfo {
 128         ushort  vl_col;         /* Number of columns (i.e. 640) */
 129         ushort  vl_row;         /* Number of rows (i.e. 480) */
 130         ushort  vl_width;       /* Width of display area in millimeters */
 131         ushort  vl_height;      /* Height of display area in millimeters */
 132
 133         /* LCD configuration register */
 134         u_char  vl_clkp;        /* Clock polarity */
 135         u_char  vl_oep;         /* Output Enable polarity */
 136         u_char  vl_hsp;         /* Horizontal Sync polarity */
 137         u_char  vl_vsp;         /* Vertical Sync polarity */
 138         u_char  vl_dp;          /* Data polarity */
 139         u_char  vl_bpix;        /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
 140         u_char  vl_lbw;         /* LCD Bus width, 0 = 4, 1 = 8 */
 141         u_char  vl_splt;        /* Split display, 0 = single-scan, 1 = dual-scan */
 142         u_char  vl_clor;        /* Color, 0 = mono, 1 = color */
 143         u_char  vl_tft;         /* 0 = passive, 1 = TFT */
 144
 145         /* Horizontal control register. Timing from data sheet */
 146         ushort  vl_hpw;         /* Horz sync pulse width */
 147         u_char  vl_blw;         /* Wait before of line */
 148         u_char  vl_elw;         /* Wait end of line */
 149
 150         /* Vertical control register. */
 151         u_char  vl_vpw;         /* Vertical sync pulse width */
 152         u_char  vl_bfw;         /* Wait before of frame */
 153         u_char  vl_efw;         /* Wait end of frame */
 154
 155         /* PXA LCD controller params */
 156         struct  pxafb_info pxa;
 157 } vidinfo_t;
 158
 159 #elif defined(CONFIG_ATMEL_LCD)
 160
 161 typedef struct vidinfo {
 162         u_long vl_col;          /* Number of columns (i.e. 640) */
 163         u_long vl_row;          /* Number of rows (i.e. 480) */
 164         u_long vl_clk;  /* pixel clock in ps    */
 165
 166         /* LCD configuration register */
 167         u_long vl_sync;         /* Horizontal / vertical sync */
 168         u_long vl_bpix;         /* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
 169         u_long vl_tft;          /* 0 = passive, 1 = TFT */
 170         u_long vl_cont_pol_low; /* contrast polarity is low */
 171
 172         /* Horizontal control register. */
 173         u_long vl_hsync_len;    /* Length of horizontal sync */
 174         u_long vl_left_margin;  /* Time from sync to picture */
 175         u_long vl_right_margin; /* Time from picture to sync */
 176
 177         /* Vertical control register. */
 178         u_long vl_vsync_len;    /* Length of vertical sync */
 179         u_long vl_upper_margin; /* Time from sync to picture */
 180         u_long vl_lower_margin; /* Time from picture to sync */
 181
 182         u_long  mmio;           /* Memory mapped registers */
 183 } vidinfo_t;
 184
 185 #else
 186
 187 typedef struct vidinfo {
 188         ushort  vl_col;         /* Number of columns (i.e. 160) */
 189         ushort  vl_row;         /* Number of rows (i.e. 100) */
 190
 191         u_char  vl_bpix;        /* Bits per pixel, 0 = 1 */
 192
 193         ushort  *cmap;          /* Pointer to the colormap */
 194
 195         void    *priv;          /* Pointer to driver-specific data */
 196 } vidinfo_t;
 197
 198 #endif /* CONFIG_MPC823, CONFIG_PXA250 or CONFIG_MCC200 or CONFIG_ATMEL_LCD */
 199
 200 extern vidinfo_t panel_info;
 201
 202 /* Video functions */
 203
 204 #if defined(CONFIG_RBC823)
 205 void    lcd_disable     (void);
 206 #endif
 207
 208
 209 /* int  lcd_init        (void *lcdbase); */
 210 void    lcd_putc        (const char c);
 211 void    lcd_puts        (const char *s);
 212 void    lcd_printf      (const char *fmt, ...);
 213
 214 /* Allow boards to customize the information displayed */
 215 void lcd_show_board_info(void);
 216
 217 /************************************************************************/
 218 /* ** BITMAP DISPLAY SUPPORT                                            */
 219 /************************************************************************/
 220 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
 221 # include <bmp_layout.h>
 222 # include <asm/byteorder.h>
 223 #endif
 224
 225 /*
 226  *  Information about displays we are using. This is for configuring
 227  *  the LCD controller and memory allocation. Someone has to know what
 228  *  is connected, as we can't autodetect anything.
 229  */
 230 #define CONFIG_SYS_HIGH 0       /* Pins are active high                 */
 231 #define CONFIG_SYS_LOW          1       /* Pins are active low                  */
 232
 233 #define LCD_MONOCHROME  0
 234 #define LCD_COLOR2      1
 235 #define LCD_COLOR4      2
 236 #define LCD_COLOR8      3
 237 #define LCD_COLOR16     4
 238
 239 /*----------------------------------------------------------------------*/
 240 #if defined(CONFIG_LCD_INFO_BELOW_LOGO)
 241 # define LCD_INFO_X             0
 242 # define LCD_INFO_Y             (BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
 243 #elif defined(CONFIG_LCD_LOGO)
 244 # define LCD_INFO_X             (BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
 245 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 246 #else
 247 # define LCD_INFO_X             (VIDEO_FONT_WIDTH)
 248 # define LCD_INFO_Y             (VIDEO_FONT_HEIGHT)
 249 #endif
 250
 251 /* Default to 8bpp if bit depth not specified */
 252 #ifndef LCD_BPP
 253 # define LCD_BPP                        LCD_COLOR8
 254 #endif
 255 #ifndef LCD_DF
 256 # define LCD_DF                 1
 257 #endif
 258
 259 /* Calculate nr. of bits per pixel  and nr. of colors */
 260 #define NBITS(bit_code)         (1 << (bit_code))
 261 #define NCOLORS(bit_code)       (1 << NBITS(bit_code))
 262
 263 /************************************************************************/
 264 /* ** CONSOLE CONSTANTS                                                 */
 265 /************************************************************************/
 266 #if LCD_BPP == LCD_MONOCHROME
 267
 268 /*
 269  * Simple black/white definitions
 270  */
 271 # define CONSOLE_COLOR_BLACK    0
 272 # define CONSOLE_COLOR_WHITE    1       /* Must remain last / highest   */
 273
 274 #elif LCD_BPP == LCD_COLOR8
 275
 276 /*
 277  * 8bpp color definitions
 278  */
 279 # define CONSOLE_COLOR_BLACK    0
 280 # define CONSOLE_COLOR_RED      1
 281 # define CONSOLE_COLOR_GREEN    2
 282 # define CONSOLE_COLOR_YELLOW   3
 283 # define CONSOLE_COLOR_BLUE     4
 284 # define CONSOLE_COLOR_MAGENTA  5
 285 # define CONSOLE_COLOR_CYAN     6
 286 # define CONSOLE_COLOR_GREY     14
 287 # define CONSOLE_COLOR_WHITE    15      /* Must remain last / highest   */
 288
 289 #else
 290
 291 /*
 292  * 16bpp color definitions
 293  */
 294 # define CONSOLE_COLOR_BLACK    0x0000
 295 # define CONSOLE_COLOR_WHITE    0xffff  /* Must remain last / highest   */
 296
 297 #endif /* color definitions */
 298
 299 /************************************************************************/
 300 #ifndef PAGE_SIZE
 301 # define PAGE_SIZE      4096
 302 #endif
 303
 304 /************************************************************************/
 305 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
 306 /************************************************************************/
 307 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 308 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
 309                                         / VIDEO_FONT_HEIGHT)
 310 #else
 311 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
 312 #endif
 313
 314 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
 315 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
 316 #define CONSOLE_ROW_FIRST       (lcd_console_address)
 317 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
 318 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
 319                                         - CONSOLE_ROW_SIZE)
 320 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
 321 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
 322
 323 #if LCD_BPP == LCD_MONOCHROME
 324 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
 325                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
 326 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
 327 # define COLOR_MASK(c)          (c)
 328 #else
 329 # error Unsupported LCD BPP.
 330 #endif
 331
 332 /************************************************************************/
 333
 334 #endif  /* _LCD_H_ */