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 (CONFIG_COMMANDS & CFG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN) 177 # include <bmp_layout.h> 178 # include <asm/byteorder.h> 179 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) || CONFIG_SPLASH_SCREEN */ 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_ */ 291