[U-Boot] [PATCH v3] Add 16bpp BMP support

Mark Jackson
2009-01-27T14:16:18Z

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>
---

common/lcd.c | 49 +++++++++++++++++++++++++++++++++++++++----------
1 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/common/lcd.c b/common/lcd.c
index ae79051..16d6f2a 100644
--- a/common/lcd.c
+++ b/common/lcd.c
@@ -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;
@@ -738,17 +738,46 @@ 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);
- for (i = 0; i < height; ++i) {
- WATCHDOG_RESET();
- for (j = 0; j < width ; j++)
+
+ switch (bpix) {
+ case 1: /* pass through */
+ case 8:
+ for (i = 0; i < height; ++i) {
+ WATCHDOG_RESET();
+ for (j = 0; j < width ; j++)
#if defined(CONFIG_PXA250) || defined(CONFIG_ATMEL_LCD)
- *(fb++) = *(bmap++);
+ *(fb++) = *(bmap++);
#elif defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
- *(fb++)=255-*(bmap++);
+ *(fb++)=255-*(bmap++);
#endif
- bmap += (width - padded_line);
- fb -= (width + lcd_line_length);
- }
+ 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);
}