2 * Common LCD routines for supported CPUs
4 * (C) Copyright 2001-2002
5 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 /************************************************************************/
28 /************************************************************************/
36 #include <linux/types.h>
37 #include <stdio_dev.h>
38 #if defined(CONFIG_POST)
44 #if defined(CONFIG_PXA250)
45 #include <asm/byteorder.h>
48 #if defined(CONFIG_MPC823)
52 #if defined(CONFIG_ATMEL_LCD)
53 #include <atmel_lcdc.h>
56 /************************************************************************/
58 /************************************************************************/
59 #include <video_font.h> /* Get font data, width and height */
61 /************************************************************************/
63 /************************************************************************/
64 #ifdef CONFIG_LCD_LOGO
65 # include <bmp_logo.h> /* Get logo data, width and height */
66 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
67 # error Default Color Map overlaps with Logo Color Map
71 DECLARE_GLOBAL_DATA_PTR;
73 ulong lcd_setmem (ulong addr);
75 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count);
76 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
77 static inline void lcd_putc_xy (ushort x, ushort y, uchar c);
79 static int lcd_init (void *lcdbase);
81 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
82 static void *lcd_logo (void);
84 static int lcd_getbgcolor (void);
85 static void lcd_setfgcolor (int color);
86 static void lcd_setbgcolor (int color);
88 char lcd_is_enabled = 0;
90 #ifdef NOT_USED_SO_FAR
91 static void lcd_getcolreg (ushort regno,
92 ushort *red, ushort *green, ushort *blue);
93 static int lcd_getfgcolor (void);
94 #endif /* NOT_USED_SO_FAR */
96 /************************************************************************/
98 /*----------------------------------------------------------------------*/
100 static void console_scrollup (void)
102 /* Copy up rows ignoring the first one */
103 memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);
105 /* Clear the last one */
106 memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
109 /*----------------------------------------------------------------------*/
111 static inline void console_back (void)
113 if (--console_col < 0) {
114 console_col = CONSOLE_COLS-1 ;
115 if (--console_row < 0) {
120 lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
121 console_row * VIDEO_FONT_HEIGHT,
125 /*----------------------------------------------------------------------*/
127 static inline void console_newline (void)
132 /* Check if we need to scroll the terminal */
133 if (console_row >= CONSOLE_ROWS) {
134 /* Scroll everything up */
135 console_scrollup () ;
140 /*----------------------------------------------------------------------*/
142 void lcd_putc (const char c)
144 if (!lcd_is_enabled) {
150 case '\r': console_col = 0;
153 case '\n': console_newline();
156 case '\t': /* Tab (8 chars alignment) */
160 if (console_col >= CONSOLE_COLS) {
165 case '\b': console_back();
168 default: lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
169 console_row * VIDEO_FONT_HEIGHT,
171 if (++console_col >= CONSOLE_COLS) {
179 /*----------------------------------------------------------------------*/
181 void lcd_puts (const char *s)
183 if (!lcd_is_enabled) {
193 /*----------------------------------------------------------------------*/
195 void lcd_printf(const char *fmt, ...)
198 char buf[CONFIG_SYS_PBSIZE];
201 vsprintf(buf, fmt, args);
207 /************************************************************************/
208 /* ** Low-Level Graphics Routines */
209 /************************************************************************/
211 static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
216 dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
217 off = x * (1 << LCD_BPP) % 8;
219 for (row=0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
224 #if LCD_BPP == LCD_MONOCHROME
225 uchar rest = *d & -(1 << (8-off));
228 for (i=0; i<count; ++i) {
232 bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
234 #if LCD_BPP == LCD_MONOCHROME
235 sym = (COLOR_MASK(lcd_color_fg) & bits) |
236 (COLOR_MASK(lcd_color_bg) & ~bits);
238 *d++ = rest | (sym >> off);
239 rest = sym << (8-off);
240 #elif LCD_BPP == LCD_COLOR8
241 for (c=0; c<8; ++c) {
242 *d++ = (bits & 0x80) ?
243 lcd_color_fg : lcd_color_bg;
246 #elif LCD_BPP == LCD_COLOR16
247 for (c=0; c<16; ++c) {
248 *d++ = (bits & 0x80) ?
249 lcd_color_fg : lcd_color_bg;
254 #if LCD_BPP == LCD_MONOCHROME
255 *d = rest | (*d & ((1 << (8-off)) - 1));
260 /*----------------------------------------------------------------------*/
262 static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
264 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
265 lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen ((char *)s));
267 lcd_drawchars (x, y, s, strlen ((char *)s));
271 /*----------------------------------------------------------------------*/
273 static inline void lcd_putc_xy (ushort x, ushort y, uchar c)
275 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
276 lcd_drawchars (x, y+BMP_LOGO_HEIGHT, &c, 1);
278 lcd_drawchars (x, y, &c, 1);
282 /************************************************************************/
283 /** Small utility to check that you got the colours right */
284 /************************************************************************/
285 #ifdef LCD_TEST_PATTERN
290 static int test_colors[N_BLK_HOR*N_BLK_VERT] = {
291 CONSOLE_COLOR_RED, CONSOLE_COLOR_GREEN, CONSOLE_COLOR_YELLOW,
292 CONSOLE_COLOR_BLUE, CONSOLE_COLOR_MAGENTA, CONSOLE_COLOR_CYAN,
295 static void test_pattern (void)
297 ushort v_max = panel_info.vl_row;
298 ushort h_max = panel_info.vl_col;
299 ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
300 ushort h_step = (h_max + N_BLK_HOR - 1) / N_BLK_HOR;
302 uchar *pix = (uchar *)lcd_base;
304 printf ("[LCD] Test Pattern: %d x %d [%d x %d]\n",
305 h_max, v_max, h_step, v_step);
307 /* WARNING: Code silently assumes 8bit/pixel */
308 for (v=0; v<v_max; ++v) {
309 uchar iy = v / v_step;
310 for (h=0; h<h_max; ++h) {
311 uchar ix = N_BLK_HOR * iy + (h/h_step);
312 *pix++ = test_colors[ix];
316 #endif /* LCD_TEST_PATTERN */
319 /************************************************************************/
320 /* ** GENERIC Initialization Routines */
321 /************************************************************************/
323 int drv_lcd_init (void)
325 struct stdio_dev lcddev;
328 lcd_base = (void *)(gd->fb_base);
330 lcd_line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
332 lcd_init (lcd_base); /* LCD initialization */
334 /* Device initialization */
335 memset (&lcddev, 0, sizeof (lcddev));
337 strcpy (lcddev.name, "lcd");
338 lcddev.ext = 0; /* No extensions */
339 lcddev.flags = DEV_FLAGS_OUTPUT; /* Output only */
340 lcddev.putc = lcd_putc; /* 'putc' function */
341 lcddev.puts = lcd_puts; /* 'puts' function */
343 rc = stdio_register (&lcddev);
345 return (rc == 0) ? 1 : rc;
348 /*----------------------------------------------------------------------*/
349 static int lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
351 #if LCD_BPP == LCD_MONOCHROME
352 /* Setting the palette */
355 #elif LCD_BPP == LCD_COLOR8
356 /* Setting the palette */
357 lcd_setcolreg (CONSOLE_COLOR_BLACK, 0, 0, 0);
358 lcd_setcolreg (CONSOLE_COLOR_RED, 0xFF, 0, 0);
359 lcd_setcolreg (CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
360 lcd_setcolreg (CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
361 lcd_setcolreg (CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
362 lcd_setcolreg (CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
363 lcd_setcolreg (CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
364 lcd_setcolreg (CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
365 lcd_setcolreg (CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
368 #ifndef CONFIG_SYS_WHITE_ON_BLACK
369 lcd_setfgcolor (CONSOLE_COLOR_BLACK);
370 lcd_setbgcolor (CONSOLE_COLOR_WHITE);
372 lcd_setfgcolor (CONSOLE_COLOR_WHITE);
373 lcd_setbgcolor (CONSOLE_COLOR_BLACK);
374 #endif /* CONFIG_SYS_WHITE_ON_BLACK */
376 #ifdef LCD_TEST_PATTERN
379 /* set framebuffer to background color */
380 memset ((char *)lcd_base,
381 COLOR_MASK(lcd_getbgcolor()),
382 lcd_line_length*panel_info.vl_row);
384 /* Paint the logo and retrieve LCD base address */
385 debug ("[LCD] Drawing the logo...\n");
386 lcd_console_address = lcd_logo ();
395 cls, 1, 1, lcd_clear,
400 /*----------------------------------------------------------------------*/
402 static int lcd_init (void *lcdbase)
404 /* Initialize the lcd controller */
405 debug ("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
407 lcd_ctrl_init (lcdbase);
409 lcd_clear (NULL, 1, 1, NULL); /* dummy args */
412 /* Initialize the console */
414 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
415 console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
417 console_row = 1; /* leave 1 blank line below logo */
424 /************************************************************************/
425 /* ** ROM capable initialization part - needed to reserve FB memory */
426 /************************************************************************/
428 * This is called early in the system initialization to grab memory
429 * for the LCD controller.
430 * Returns new address for monitor, after reserving LCD buffer memory
432 * Note that this is running from ROM, so no write access to global data.
434 ulong lcd_setmem (ulong addr)
437 int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
439 debug ("LCD panel info: %d x %d, %d bit/pix\n",
440 panel_info.vl_col, panel_info.vl_row, NBITS (panel_info.vl_bpix) );
442 size = line_length * panel_info.vl_row;
444 /* Round up to nearest full page */
445 size = (size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
447 /* Allocate pages for the frame buffer. */
450 debug ("Reserving %ldk for LCD Framebuffer at: %08lx\n", size>>10, addr);
455 /*----------------------------------------------------------------------*/
457 static void lcd_setfgcolor (int color)
459 lcd_color_fg = color;
462 /*----------------------------------------------------------------------*/
464 static void lcd_setbgcolor (int color)
466 lcd_color_bg = color;
469 /*----------------------------------------------------------------------*/
471 #ifdef NOT_USED_SO_FAR
472 static int lcd_getfgcolor (void)
476 #endif /* NOT_USED_SO_FAR */
478 /*----------------------------------------------------------------------*/
480 static int lcd_getbgcolor (void)
485 /*----------------------------------------------------------------------*/
487 /************************************************************************/
488 /* ** Chipset depending Bitmap / Logo stuff... */
489 /************************************************************************/
490 #ifdef CONFIG_LCD_LOGO
491 void bitmap_plot (int x, int y)
493 #ifdef CONFIG_ATMEL_LCD
502 #if defined(CONFIG_PXA250)
503 struct pxafb_info *fbi = &panel_info.pxa;
504 #elif defined(CONFIG_MPC823)
505 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
506 volatile cpm8xx_t *cp = &(immr->im_cpm);
509 debug ("Logo: width %d height %d colors %d cmap %d\n",
510 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
511 (int)(sizeof(bmp_logo_palette)/(sizeof(ushort))));
513 bmap = &bmp_logo_bitmap[0];
514 fb = (uchar *)(lcd_base + y * lcd_line_length + x);
516 if (NBITS(panel_info.vl_bpix) < 12) {
517 /* Leave room for default color map */
518 #if defined(CONFIG_PXA250)
519 cmap = (ushort *)fbi->palette;
520 #elif defined(CONFIG_MPC823)
521 cmap = (ushort *)&(cp->lcd_cmap[BMP_LOGO_OFFSET*sizeof(ushort)]);
522 #elif defined(CONFIG_ATMEL_LCD)
523 cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
529 for (i=0; i<(sizeof(bmp_logo_palette)/(sizeof(ushort))); ++i) {
530 ushort colreg = bmp_logo_palette[i];
531 #ifdef CONFIG_ATMEL_LCD
533 #ifdef CONFIG_ATMEL_LCD_BGR555
534 lut_entry = ((colreg & 0x000F) << 11) |
535 ((colreg & 0x00F0) << 2) |
536 ((colreg & 0x0F00) >> 7);
537 #else /* CONFIG_ATMEL_LCD_RGB565 */
538 lut_entry = ((colreg & 0x000F) << 1) |
539 ((colreg & 0x00F0) << 3) |
540 ((colreg & 0x0F00) << 4);
542 *(cmap + BMP_LOGO_OFFSET) = lut_entry;
544 #else /* !CONFIG_ATMEL_LCD */
545 #ifdef CONFIG_SYS_INVERT_COLORS
546 *cmap++ = 0xffff - colreg;
550 #endif /* CONFIG_ATMEL_LCD */
555 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
556 memcpy (fb, bmap, BMP_LOGO_WIDTH);
557 bmap += BMP_LOGO_WIDTH;
558 fb += panel_info.vl_col;
561 else { /* true color mode */
562 fb16 = (ushort *)(lcd_base + y * lcd_line_length + x);
563 for (i=0; i<BMP_LOGO_HEIGHT; ++i) {
564 for (j=0; j<BMP_LOGO_WIDTH; j++) {
565 fb16[j] = bmp_logo_palette[(bmap[j])];
567 bmap += BMP_LOGO_WIDTH;
568 fb16 += panel_info.vl_col;
574 #endif /* CONFIG_LCD_LOGO */
576 /*----------------------------------------------------------------------*/
577 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
579 * Display the BMP file located at address bmp_image.
583 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
584 #define BMP_ALIGN_CENTER 0x7FFF
587 int lcd_display_bitmap(ulong bmp_image, int x, int y)
589 #if !defined(CONFIG_MCC200)
592 ushort *cmap_base = NULL;
595 bmp_image_t *bmp=(bmp_image_t *)bmp_image;
598 unsigned long width, height, byte_width;
599 unsigned long pwidth = panel_info.vl_col;
600 unsigned colors, bpix, bmp_bpix;
601 unsigned long compression;
602 #if defined(CONFIG_PXA250)
603 struct pxafb_info *fbi = &panel_info.pxa;
604 #elif defined(CONFIG_MPC823)
605 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
606 volatile cpm8xx_t *cp = &(immr->im_cpm);
609 if (!((bmp->header.signature[0]=='B') &&
610 (bmp->header.signature[1]=='M'))) {
611 printf ("Error: no valid bmp image at %lx\n", bmp_image);
615 width = le32_to_cpu (bmp->header.width);
616 height = le32_to_cpu (bmp->header.height);
617 bmp_bpix = le16_to_cpu(bmp->header.bit_count);
618 colors = 1 << bmp_bpix;
619 compression = le32_to_cpu (bmp->header.compression);
621 bpix = NBITS(panel_info.vl_bpix);
623 if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
624 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
629 /* We support displaying 8bpp BMPs on 16bpp LCDs */
630 if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16)) {
631 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
633 le16_to_cpu(bmp->header.bit_count));
637 debug ("Display-bmp: %d x %d with %d colors\n",
638 (int)width, (int)height, (int)colors);
640 #if !defined(CONFIG_MCC200)
641 /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
643 #if defined(CONFIG_PXA250)
644 cmap = (ushort *)fbi->palette;
645 #elif defined(CONFIG_MPC823)
646 cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
647 #elif !defined(CONFIG_ATMEL_LCD)
648 cmap = panel_info.cmap;
654 for (i=0; i<colors; ++i) {
655 bmp_color_table_entry_t cte = bmp->color_table[i];
656 #if !defined(CONFIG_ATMEL_LCD)
658 ( ((cte.red) << 8) & 0xf800) |
659 ( ((cte.green) << 3) & 0x07e0) |
660 ( ((cte.blue) >> 3) & 0x001f) ;
661 #ifdef CONFIG_SYS_INVERT_COLORS
662 *cmap = 0xffff - colreg;
666 #if defined(CONFIG_MPC823)
671 #else /* CONFIG_ATMEL_LCD */
672 lcd_setcolreg(i, cte.red, cte.green, cte.blue);
679 * BMP format for Monochrome assumes that the state of a
680 * pixel is described on a per Bit basis, not per Byte.
681 * So, in case of Monochrome BMP we should align widths
682 * on a byte boundary and convert them from Bit to Byte
684 * Probably, PXA250 and MPC823 process 1bpp BMP images in
685 * their own ways, so make the converting to be MCC200
688 #if defined(CONFIG_MCC200)
691 width = ((width + 7) & ~7) >> 3;
692 x = ((x + 7) & ~7) >> 3;
693 pwidth= ((pwidth + 7) & ~7) >> 3;
697 padded_line = (width&0x3) ? ((width&~0x3)+4) : (width);
699 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
700 if (x == BMP_ALIGN_CENTER)
701 x = max(0, (pwidth - width) / 2);
703 x = max(0, pwidth - width + x + 1);
705 if (y == BMP_ALIGN_CENTER)
706 y = max(0, (panel_info.vl_row - height) / 2);
708 y = max(0, panel_info.vl_row - height + y + 1);
709 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
711 if ((x + width)>pwidth)
713 if ((y + height)>panel_info.vl_row)
714 height = panel_info.vl_row - y;
716 bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
717 fb = (uchar *) (lcd_base +
718 (y + height - 1) * lcd_line_length + x);
721 case 1: /* pass through */
726 byte_width = width * 2;
728 for (i = 0; i < height; ++i) {
730 for (j = 0; j < width; j++) {
732 #if defined(CONFIG_PXA250) || defined(CONFIG_ATMEL_LCD)
734 #elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
735 *(fb++) = 255 - *(bmap++);
738 *(uint16_t *)fb = cmap_base[*(bmap++)];
739 fb += sizeof(uint16_t) / sizeof(*fb);
742 bmap += (width - padded_line);
743 fb -= (byte_width + lcd_line_length);
747 #if defined(CONFIG_BMP_16BPP)
749 for (i = 0; i < height; ++i) {
751 for (j = 0; j < width; j++) {
752 #if defined(CONFIG_ATMEL_LCD_BGR555)
753 *(fb++) = ((bmap[0] & 0x1f) << 2) |
755 *(fb++) = (bmap[0] & 0xe0) |
756 ((bmap[1] & 0x7c) >> 2);
763 bmap += (padded_line - width) * 2;
764 fb -= (width * 2 + lcd_line_length);
767 #endif /* CONFIG_BMP_16BPP */
777 static void *lcd_logo (void)
779 #ifdef CONFIG_SPLASH_SCREEN
782 static int do_splash = 1;
784 if (do_splash && (s = getenv("splashimage")) != NULL) {
788 addr = simple_strtoul (s, NULL, 16);
789 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
790 if ((s = getenv ("splashpos")) != NULL) {
792 x = BMP_ALIGN_CENTER;
794 x = simple_strtol (s, NULL, 0);
796 if ((s = strchr (s + 1, ',')) != NULL) {
798 y = BMP_ALIGN_CENTER;
800 y = simple_strtol (s + 1, NULL, 0);
803 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
805 #ifdef CONFIG_VIDEO_BMP_GZIP
806 bmp_image_t *bmp = (bmp_image_t *)addr;
809 if (!((bmp->header.signature[0]=='B') &&
810 (bmp->header.signature[1]=='M'))) {
811 addr = (ulong)gunzip_bmp(addr, &len);
815 if (lcd_display_bitmap (addr, x, y) == 0) {
816 return ((void *)lcd_base);
819 #endif /* CONFIG_SPLASH_SCREEN */
821 #ifdef CONFIG_LCD_LOGO
823 #endif /* CONFIG_LCD_LOGO */
825 #ifdef CONFIG_LCD_INFO
826 console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
827 console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
828 lcd_show_board_info();
829 #endif /* CONFIG_LCD_INFO */
831 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
832 return ((void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length));
834 return ((void *)lcd_base);
835 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
838 /************************************************************************/
839 /************************************************************************/