[U-Boot] [PATCH v2] video: cfb_console: add support for 4bpp bitmaps with GDF_32BIT_X888RGB
Anatolij Gustschin
agust at denx.de
Sun Sep 19 00:56:37 CEST 2010
From: Timur Tabi <timur at freescale.com>
Add support for 4bpp bitmaps, currently only for GDF_32BIT_X888RGB
frame buffer format.
Signed-off-by: Timur Tabi <timur at freescale.com>
Signed-off-by: Anatolij Gustschin <agust at denx.de>
---
Hi Timur,
I slighlty modified original patch, the result is this v2.
Hope this is okay.
Anatolij
v2:
- slightly changed commit message
- fixed too long lines (> 80)
- added info output about unsupported frame buffer formats
drivers/video/cfb_console.c | 38 +++++++++++++++++++++++++++++++++++++-
1 files changed, 37 insertions(+), 1 deletions(-)
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 3d047f2..dd849c2 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -1118,8 +1118,44 @@ int video_display_bitmap (ulong bmp_image, int x, int y)
}
#endif
- /* We handle only 8bpp or 24 bpp bitmap */
+ /* We handle only 4, 8, or 24 bpp bitmaps */
switch (le16_to_cpu (bmp->header.bit_count)) {
+ case 4:
+ padded_line -= width / 2;
+ ycount = height;
+
+ switch (VIDEO_DATA_FORMAT) {
+ case GDF_32BIT_X888RGB:
+ while (ycount--) {
+ WATCHDOG_RESET ();
+ /*
+ * Don't assume that 'width' is an
+ * even number
+ */
+ for (xcount = 0; xcount < width; xcount++) {
+ uchar idx;
+
+ if (xcount & 1) {
+ idx = *bmap & 0xF;
+ bmap++;
+ } else
+ idx = *bmap >> 4;
+ cte = bmp->color_table[idx];
+ FILL_32BIT_X888RGB(cte.red, cte.green,
+ cte.blue);
+ }
+ bmap += padded_line;
+ fb -= (VIDEO_VISIBLE_COLS + width) *
+ VIDEO_PIXEL_SIZE;
+ }
+ break;
+ default:
+ puts("4bpp bitmap unsupported with current "
+ "video mode\n");
+ break;
+ }
+ break;
+
case 8:
padded_line -= width;
if (VIDEO_DATA_FORMAT == GDF__8BIT_INDEX) {
--
1.7.0.4
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