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Add 16bpp BMP support

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This patch adds 16bpp BMP support to the common lcd code.

Use CONFIG_BMP_16BPP and set LCD_BPP to LCD_COLOR16 to enable the code.

At the moment it's only been tested on the MIMC200 AVR32 board, but extending
this to other platforms should be a simple task !!

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Mark Jackson 2009-02-06 10:37:49 +01:00 committed by Anatolij Gustschin
parent 689551c5ff
commit a303dfb0e9
1 changed files with 41 additions and 10 deletions
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35
common/lcd.c
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@ -84,7 +84,7 @@ extern void lcd_enable (void);
static void *lcd_logo (void);
#if LCD_BPP == LCD_COLOR8
#if (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
extern void lcd_setcolreg (ushort regno,
ushort red, ushort green, ushort blue);
#endif
@ -656,7 +656,7 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
bpix = NBITS(panel_info.vl_bpix);
if ((bpix != 1) && (bpix != 8)) {
if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
printf ("Error: %d bit/pixel mode not supported by U-Boot\n",
bpix);
return 1;
@ -738,6 +738,10 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
bmap = (uchar *)bmp + le32_to_cpu (bmp->header.data_offset);
fb = (uchar *) (lcd_base +
(y + height - 1) * lcd_line_length + x);
switch (bpix) {
case 1: /* pass through */
case 8:
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width ; j++)
@ -749,6 +753,33 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
bmap += (width - padded_line);
fb -= (width + lcd_line_length);
}
break;
#if defined(CONFIG_BMP_16BPP)
case 16:
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
for (j = 0; j < width; j++) {
#if defined(CONFIG_ATMEL_LCD_BGR555)
*(fb++) = ((bmap[0] & 0x1f) << 2) |
(bmap[1] & 0x03);
*(fb++) = (bmap[0] & 0xe0) |
((bmap[1] & 0x7c) >> 2);
bmap += 2;
#else
*(fb++) = *(bmap++);
*(fb++) = *(bmap++);
#endif
}
bmap += (padded_line - width) * 2;
fb -= (width * 2 + lcd_line_length);
}
break;
#endif /* CONFIG_BMP_16BPP */
default:
break;
};
return (0);
}