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 ushort vl_col; /* Number of columns (i.e. 640) */ 163 ushort 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_ */ 335