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authorGuennadi Liakhovetski <lg@denx.de>2009-02-06 10:37:53 +0100
committerAnatolij Gustschin <agust@denx.de>2009-02-24 10:19:00 +0100
commitb245e65ee3c4cce3ccf008a21f4528239655876c (patch)
treeca587d380503291ea2729b712e8d80143ca61dfc /common/lcd.c
parenta303dfb0e9a93e516ea9427b5c09543d5f74ade1 (diff)
downloadu-boot-linaro-stable-b245e65ee3c4cce3ccf008a21f4528239655876c.tar.gz
LCD: support 8bpp BMPs on 16bpp displays
This patch also simplifies some ifdefs in lcd.c, introduces a generic vidinfo_t, which new drivers are encouraged to use and old drivers to switch over to. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Acked-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'common/lcd.c')
-rw-r--r--common/lcd.c59
1 files changed, 34 insertions, 25 deletions
diff --git a/common/lcd.c b/common/lcd.c
index f459a7498..d238fdde8 100644
--- a/common/lcd.c
+++ b/common/lcd.c
@@ -622,19 +622,15 @@ void bitmap_plot (int x, int y)
*/
int lcd_display_bitmap(ulong bmp_image, int x, int y)
{
-#ifdef CONFIG_ATMEL_LCD
- uint *cmap;
-#elif !defined(CONFIG_MCC200)
- ushort *cmap;
-#endif
+ ushort *cmap = NULL, *cmap_base = NULL;
ushort i, j;
uchar *fb;
bmp_image_t *bmp=(bmp_image_t *)bmp_image;
uchar *bmap;
ushort padded_line;
- unsigned long width, height;
+ unsigned long width, height, byte_width;
unsigned long pwidth = panel_info.vl_col;
- unsigned colors,bpix;
+ unsigned colors, bpix, bmp_bpix;
unsigned long compression;
#if defined(CONFIG_PXA250)
struct pxafb_info *fbi = &panel_info.pxa;
@@ -647,22 +643,24 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
(bmp->header.signature[1]=='M'))) {
printf ("Error: no valid bmp image at %lx\n", bmp_image);
return 1;
-}
+ }
width = le32_to_cpu (bmp->header.width);
height = le32_to_cpu (bmp->header.height);
- colors = 1<<le16_to_cpu (bmp->header.bit_count);
+ bmp_bpix = le16_to_cpu(bmp->header.bit_count);
+ colors = 1 << bmp_bpix;
compression = le32_to_cpu (bmp->header.compression);
bpix = NBITS(panel_info.vl_bpix);
if ((bpix != 1) && (bpix != 8) && (bpix != 16)) {
- printf ("Error: %d bit/pixel mode not supported by U-Boot\n",
- bpix);
+ printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
+ bpix, bmp_bpix);
return 1;
}
- if (bpix != le16_to_cpu(bmp->header.bit_count)) {
+ /* We support displaying 8bpp BMPs on 16bpp LCDs */
+ if (bpix != bmp_bpix && (bmp_bpix != 8 || bpix != 16)) {
printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
bpix,
le16_to_cpu(bmp->header.bit_count));
@@ -674,17 +672,17 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
#if !defined(CONFIG_MCC200)
/* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
- if (bpix==8) {
+ if (bmp_bpix == 8) {
#if defined(CONFIG_PXA250)
cmap = (ushort *)fbi->palette;
#elif defined(CONFIG_MPC823)
cmap = (ushort *)&(cp->lcd_cmap[255*sizeof(ushort)]);
-#elif defined(CONFIG_ATMEL_LCD)
- cmap = (uint *) (panel_info.mmio + ATMEL_LCDC_LUT(0));
-#else
-# error "Don't know location of color map"
+#elif !defined(CONFIG_ATMEL_LCD)
+ cmap = panel_info.cmap;
#endif
+ cmap_base = cmap;
+
/* Set color map */
for (i=0; i<colors; ++i) {
bmp_color_table_entry_t cte = bmp->color_table[i];
@@ -698,10 +696,10 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
#else
*cmap = colreg;
#endif
-#if defined(CONFIG_PXA250)
- cmap++;
-#elif defined(CONFIG_MPC823)
+#if defined(CONFIG_MPC823)
cmap--;
+#else
+ cmap++;
#endif
#else /* CONFIG_ATMEL_LCD */
lcd_setcolreg(i, cte.red, cte.green, cte.blue);
@@ -739,19 +737,30 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
fb = (uchar *) (lcd_base +
(y + height - 1) * lcd_line_length + x);
- switch (bpix) {
+ switch (bmp_bpix) {
case 1: /* pass through */
case 8:
+ if (bpix != 16)
+ byte_width = width;
+ else
+ byte_width = width * 2;
+
for (i = 0; i < height; ++i) {
WATCHDOG_RESET();
- for (j = 0; j < width ; j++)
+ for (j = 0; j < width; j++) {
+ if (bpix != 16) {
#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
+ } else {
+ *(uint16_t *)fb = cmap_base[*(bmap++)];
+ fb += sizeof(uint16_t) / sizeof(*fb);
+ }
+ }
bmap += (width - padded_line);
- fb -= (width + lcd_line_length);
+ fb -= (byte_width + lcd_line_length);
}
break;