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video: tegra: Scale colors in pseudopalette

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This fixes incorrect colors drawn by clients such as fbconsole.  As
described by skeletonfb's fb_setcolreg: "The values supplied have a 16
bit magnitude which needs to be scaled in this function for the
hardware."

Tested with both r8g8b8 and r5g6b5 pixel depths and fbconsole.

Change-Id: Ie3c3579502ddab8843a8a4dc7049c6efaa5d0ac1
Signed-off-by: Robert Morell <rmorell@nvidia.com>
Acked-by: Erik Gilling <konkers@android.com>
This commit is contained in:
Robert Morell
2010-11-19 18:55:51 -08:00
committed by Erik Gilling
parent a60ea58ebe
commit d340f9224d
1 changed files with 4 additions and 0 deletions
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4
drivers/video/tegra/fb.c
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@@ -198,6 +198,10 @@ static int tegra_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
if (regno >= 16)
return -EINVAL;
red = (red >> (16 - info->var.red.length));
green = (green >> (16 - info->var.green.length));
blue = (blue >> (16 - info->var.blue.length));
v = (red << var->red.offset) |
(green << var->green.offset) |
(blue << var->blue.offset);