common/lcd_console.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2001-2015
   4  * DENX Software Engineering -- wd@denx.de
   5  * Compulab Ltd - http://compulab.co.il/
   6  * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
   7  */
   8
   9 #include <common.h>
  10 #include <command.h>
  11 #include <lcd.h>
  12 #include <log.h>
  13 #include <serial.h>
  14 #include <video_font.h>         /* Get font data, width and height */
  15 #if defined(CONFIG_LCD_LOGO)
  16 #include <bmp_logo.h>
  17 #endif
  18
  19 static struct console_t cons;
  20
  21 void lcd_set_col(short col)
  22 {
  23         cons.curr_col = col;
  24 }
  25
  26 void lcd_set_row(short row)
  27 {
  28         cons.curr_row = row;
  29 }
  30
  31 void lcd_position_cursor(unsigned col, unsigned row)
  32 {
  33         cons.curr_col = min_t(short, col, cons.cols - 1);
  34         cons.curr_row = min_t(short, row, cons.rows - 1);
  35 }
  36
  37 int lcd_get_screen_rows(void)
  38 {
  39         return cons.rows;
  40 }
  41
  42 int lcd_get_screen_columns(void)
  43 {
  44         return cons.cols;
  45 }
  46
  47 static void lcd_putc_xy0(struct console_t *pcons, ushort x, ushort y, char c)
  48 {
  49         int fg_color = lcd_getfgcolor();
  50         int bg_color = lcd_getbgcolor();
  51         int i, row;
  52         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
  53                                   y * pcons->lcdsizex +
  54                                   x;
  55
  56         for (row = 0; row < VIDEO_FONT_HEIGHT; row++) {
  57                 uchar bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
  58                 for (i = 0; i < VIDEO_FONT_WIDTH; ++i) {
  59                         *dst++ = (bits & 0x80) ? fg_color : bg_color;
  60                         bits <<= 1;
  61                 }
  62                 dst += (pcons->lcdsizex - VIDEO_FONT_WIDTH);
  63         }
  64 }
  65
  66 static inline void console_setrow0(struct console_t *pcons, u32 row, int clr)
  67 {
  68         int i;
  69         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
  70                                   row * VIDEO_FONT_HEIGHT *
  71                                   pcons->lcdsizex;
  72
  73         for (i = 0; i < (VIDEO_FONT_HEIGHT * pcons->lcdsizex); i++)
  74                 *dst++ = clr;
  75 }
  76
  77 static inline void console_moverow0(struct console_t *pcons,
  78                                     u32 rowdst, u32 rowsrc)
  79 {
  80         int i;
  81         fbptr_t *dst = (fbptr_t *)pcons->fbbase +
  82                                   rowdst * VIDEO_FONT_HEIGHT *
  83                                   pcons->lcdsizex;
  84
  85         fbptr_t *src = (fbptr_t *)pcons->fbbase +
  86                                   rowsrc * VIDEO_FONT_HEIGHT *
  87                                   pcons->lcdsizex;
  88
  89         for (i = 0; i < (VIDEO_FONT_HEIGHT * pcons->lcdsizex); i++)
  90                 *dst++ = *src++;
  91 }
  92
  93 static inline void console_back(void)
  94 {
  95         if (--cons.curr_col < 0) {
  96                 cons.curr_col = cons.cols - 1;
  97                 if (--cons.curr_row < 0)
  98                         cons.curr_row = 0;
  99         }
 100
 101         cons.fp_putc_xy(&cons,
 102                         cons.curr_col * VIDEO_FONT_WIDTH,
 103                         cons.curr_row * VIDEO_FONT_HEIGHT, ' ');
 104 }
 105
 106 static inline void console_newline(void)
 107 {
 108         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
 109         int bg_color = lcd_getbgcolor();
 110         int i;
 111
 112         cons.curr_col = 0;
 113
 114         /* Check if we need to scroll the terminal */
 115         if (++cons.curr_row >= cons.rows) {
 116                 for (i = 0; i < cons.rows-rows; i++)
 117                         cons.fp_console_moverow(&cons, i, i+rows);
 118                 for (i = 0; i < rows; i++)
 119                         cons.fp_console_setrow(&cons, cons.rows-i-1, bg_color);
 120                 cons.curr_row -= rows;
 121         }
 122         lcd_sync();
 123 }
 124
 125 void console_calc_rowcol(struct console_t *pcons, u32 sizex, u32 sizey)
 126 {
 127         pcons->cols = sizex / VIDEO_FONT_WIDTH;
 128 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
 129         pcons->rows = (pcons->lcdsizey - BMP_LOGO_HEIGHT);
 130         pcons->rows /= VIDEO_FONT_HEIGHT;
 131 #else
 132         pcons->rows = sizey / VIDEO_FONT_HEIGHT;
 133 #endif
 134 }
 135
 136 void __weak lcd_init_console_rot(struct console_t *pcons)
 137 {
 138         return;
 139 }
 140
 141 void lcd_init_console(void *address, int vl_cols, int vl_rows, int vl_rot)
 142 {
 143         memset(&cons, 0, sizeof(cons));
 144         cons.fbbase = address;
 145
 146         cons.lcdsizex = vl_cols;
 147         cons.lcdsizey = vl_rows;
 148         cons.lcdrot = vl_rot;
 149
 150         cons.fp_putc_xy = &lcd_putc_xy0;
 151         cons.fp_console_moverow = &console_moverow0;
 152         cons.fp_console_setrow = &console_setrow0;
 153         console_calc_rowcol(&cons, cons.lcdsizex, cons.lcdsizey);
 154
 155         lcd_init_console_rot(&cons);
 156
 157         debug("lcd_console: have %d/%d col/rws on scr %dx%d (%d deg rotated)\n",
 158               cons.cols, cons.rows, cons.lcdsizex, cons.lcdsizey, vl_rot);
 159 }
 160
 161 void lcd_putc(const char c)
 162 {
 163         if (!lcd_is_enabled) {
 164                 serial_putc(c);
 165
 166                 return;
 167         }
 168
 169         switch (c) {
 170         case '\r':
 171                 cons.curr_col = 0;
 172                 return;
 173         case '\n':
 174                 console_newline();
 175
 176                 return;
 177         case '\t':      /* Tab (8 chars alignment) */
 178                 cons.curr_col +=  8;
 179                 cons.curr_col &= ~7;
 180
 181                 if (cons.curr_col >= cons.cols)
 182                         console_newline();
 183
 184                 return;
 185         case '\b':
 186                 console_back();
 187
 188                 return;
 189         default:
 190                 cons.fp_putc_xy(&cons,
 191                                 cons.curr_col * VIDEO_FONT_WIDTH,
 192                                 cons.curr_row * VIDEO_FONT_HEIGHT, c);
 193                 if (++cons.curr_col >= cons.cols)
 194                         console_newline();
 195         }
 196 }
 197
 198 void lcd_puts(const char *s)
 199 {
 200         if (!lcd_is_enabled) {
 201                 serial_puts(s);
 202
 203                 return;
 204         }
 205
 206         while (*s)
 207                 lcd_putc(*s++);
 208
 209         lcd_sync();
 210 }
 211
 212 void lcd_printf(const char *fmt, ...)
 213 {
 214         va_list args;
 215         char buf[CONFIG_SYS_PBSIZE];
 216
 217         va_start(args, fmt);
 218         vsprintf(buf, fmt, args);
 219         va_end(args);
 220
 221         lcd_puts(buf);
 222 }
 223
 224 static int do_lcd_setcursor(struct cmd_tbl *cmdtp, int flag, int argc,
 225                             char *const argv[])
 226 {
 227         unsigned int col, row;
 228
 229         if (argc != 3)
 230                 return CMD_RET_USAGE;
 231
 232         col = dectoul(argv[1], NULL);
 233         row = dectoul(argv[2], NULL);
 234         lcd_position_cursor(col, row);
 235
 236         return 0;
 237 }
 238
 239 static int do_lcd_puts(struct cmd_tbl *cmdtp, int flag, int argc,
 240                        char *const argv[])
 241 {
 242         if (argc != 2)
 243                 return CMD_RET_USAGE;
 244
 245         lcd_puts(argv[1]);
 246
 247         return 0;
 248 }
 249
 250 U_BOOT_CMD(
 251         setcurs, 3,     1,      do_lcd_setcursor,
 252         "set cursor position within screen",
 253         "    <col> <row> in character"
 254 );
 255
 256 U_BOOT_CMD(
 257         lcdputs, 2,     1,      do_lcd_puts,
 258         "print string on lcd-framebuffer",
 259         "    <string>"
 260 );