1 /* 2 * (C) Copyright 2001-2014 3 * DENX Software Engineering -- wd@denx.de 4 * Compulab Ltd - http://compulab.co.il/ 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <lcd.h> 11 #include <video_font.h> /* Get font data, width and height */ 12 13 #define CONSOLE_ROW_SIZE (VIDEO_FONT_HEIGHT * lcd_line_length) 14 #define CONSOLE_ROW_FIRST lcd_console_address 15 #define CONSOLE_SIZE (CONSOLE_ROW_SIZE * console_rows) 16 17 static short console_curr_col; 18 static short console_curr_row; 19 static short console_cols; 20 static short console_rows; 21 static void *lcd_console_address; 22 23 void lcd_init_console(void *address, int rows, int cols) 24 { 25 console_curr_col = 0; 26 console_curr_row = 0; 27 console_cols = cols; 28 console_rows = rows; 29 lcd_console_address = address; 30 } 31 32 void lcd_set_col(short col) 33 { 34 console_curr_col = col; 35 } 36 37 void lcd_set_row(short row) 38 { 39 console_curr_row = row; 40 } 41 42 void lcd_position_cursor(unsigned col, unsigned row) 43 { 44 console_curr_col = min_t(short, col, console_cols - 1); 45 console_curr_row = min_t(short, row, console_rows - 1); 46 } 47 48 int lcd_get_screen_rows(void) 49 { 50 return console_rows; 51 } 52 53 int lcd_get_screen_columns(void) 54 { 55 return console_cols; 56 } 57 58 static void lcd_putc_xy(ushort x, ushort y, char c) 59 { 60 uchar *dest; 61 ushort row; 62 int fg_color = lcd_getfgcolor(); 63 int bg_color = lcd_getbgcolor(); 64 int i; 65 66 dest = (uchar *)(lcd_console_address + 67 y * lcd_line_length + x * NBITS(LCD_BPP) / 8); 68 69 for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) { 70 #if LCD_BPP == LCD_COLOR16 71 ushort *d = (ushort *)dest; 72 #elif LCD_BPP == LCD_COLOR32 73 u32 *d = (u32 *)dest; 74 #else 75 uchar *d = dest; 76 #endif 77 uchar bits; 78 bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row]; 79 80 for (i = 0; i < 8; ++i) { 81 *d++ = (bits & 0x80) ? fg_color : bg_color; 82 bits <<= 1; 83 } 84 } 85 } 86 87 static void console_scrollup(void) 88 { 89 const int rows = CONFIG_CONSOLE_SCROLL_LINES; 90 int bg_color = lcd_getbgcolor(); 91 92 /* Copy up rows ignoring those that will be overwritten */ 93 memcpy(CONSOLE_ROW_FIRST, 94 lcd_console_address + CONSOLE_ROW_SIZE * rows, 95 CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows); 96 97 /* Clear the last rows */ 98 #if (LCD_BPP != LCD_COLOR32) 99 memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows, 100 bg_color, CONSOLE_ROW_SIZE * rows); 101 #else 102 u32 *ppix = lcd_console_address + 103 CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows; 104 u32 i; 105 for (i = 0; 106 i < (CONSOLE_ROW_SIZE * rows) / NBYTES(panel_info.vl_bpix); 107 i++) { 108 *ppix++ = bg_color; 109 } 110 #endif 111 lcd_sync(); 112 console_curr_row -= rows; 113 } 114 115 static inline void console_back(void) 116 { 117 if (--console_curr_col < 0) { 118 console_curr_col = console_cols - 1; 119 if (--console_curr_row < 0) 120 console_curr_row = 0; 121 } 122 123 lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH, 124 console_curr_row * VIDEO_FONT_HEIGHT, ' '); 125 } 126 127 static inline void console_newline(void) 128 { 129 console_curr_col = 0; 130 131 /* Check if we need to scroll the terminal */ 132 if (++console_curr_row >= console_rows) 133 console_scrollup(); 134 else 135 lcd_sync(); 136 } 137 138 void lcd_putc(const char c) 139 { 140 if (!lcd_is_enabled) { 141 serial_putc(c); 142 143 return; 144 } 145 146 switch (c) { 147 case '\r': 148 console_curr_col = 0; 149 150 return; 151 case '\n': 152 console_newline(); 153 154 return; 155 case '\t': /* Tab (8 chars alignment) */ 156 console_curr_col += 8; 157 console_curr_col &= ~7; 158 159 if (console_curr_col >= console_cols) 160 console_newline(); 161 162 return; 163 case '\b': 164 console_back(); 165 166 return; 167 default: 168 lcd_putc_xy(console_curr_col * VIDEO_FONT_WIDTH, 169 console_curr_row * VIDEO_FONT_HEIGHT, c); 170 if (++console_curr_col >= console_cols) 171 console_newline(); 172 } 173 } 174 175 void lcd_puts(const char *s) 176 { 177 if (!lcd_is_enabled) { 178 serial_puts(s); 179 180 return; 181 } 182 183 while (*s) 184 lcd_putc(*s++); 185 186 lcd_sync(); 187 } 188 189 void lcd_printf(const char *fmt, ...) 190 { 191 va_list args; 192 char buf[CONFIG_SYS_PBSIZE]; 193 194 va_start(args, fmt); 195 vsprintf(buf, fmt, args); 196 va_end(args); 197 198 lcd_puts(buf); 199 } 200 201 static int do_lcd_setcursor(cmd_tbl_t *cmdtp, int flag, int argc, 202 char *const argv[]) 203 { 204 unsigned int col, row; 205 206 if (argc != 3) 207 return CMD_RET_USAGE; 208 209 col = simple_strtoul(argv[1], NULL, 10); 210 row = simple_strtoul(argv[2], NULL, 10); 211 lcd_position_cursor(col, row); 212 213 return 0; 214 } 215 216 static int do_lcd_puts(cmd_tbl_t *cmdtp, int flag, int argc, 217 char *const argv[]) 218 { 219 if (argc != 2) 220 return CMD_RET_USAGE; 221 222 lcd_puts(argv[1]); 223 224 return 0; 225 } 226 227 U_BOOT_CMD( 228 setcurs, 3, 1, do_lcd_setcursor, 229 "set cursor position within screen", 230 " <col> <row> in character" 231 ); 232 233 U_BOOT_CMD( 234 lcdputs, 2, 1, do_lcd_puts, 235 "print string on lcd-framebuffer", 236 " <string>" 237 ); 238 239