linux-kernel - [PATCH v2 3/5] gxt4500: fix color order

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Message-Id: <1443734575-12468-4-git-send-email-linux@rainbow-software.org>
Date:	Thu,  1 Oct 2015 23:22:53 +0200
From:	Ondrej Zary <linux@...nbow-software.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	=Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-fbdev@...r.kernel.org,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 3/5] gxt4500: fix color order

The color order in truecolor modes is wrong. This does not affect console but
is visible e.g. in X11 which has wrong colors.

Swap blue and red colors to fix the problem.
Fixes https://forums.gentoo.org/viewtopic-t-692740-start-0.html

Signed-off-by: Ondrej Zary <linux@...nbow-software.org>
---
 drivers/video/fbdev/gxt4500.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/video/fbdev/gxt4500.c b/drivers/video/fbdev/gxt4500.c
index 3c481d0..3ceddb8 100644
--- a/drivers/video/fbdev/gxt4500.c
+++ b/drivers/video/fbdev/gxt4500.c
@@ -347,11 +347,12 @@ static void gxt4500_unpack_pixfmt(struct fb_var_screeninfo *var,
 		break;
 	}
 	if (pixfmt != DFA_PIX_8BIT) {
-		var->green.offset = var->red.length;
-		var->blue.offset = var->green.offset + var->green.length;
+		var->blue.offset = 0;
+		var->green.offset = var->blue.length;
+		var->red.offset = var->green.offset + var->green.length;
 		if (var->transp.length)
 			var->transp.offset =
-				var->blue.offset + var->blue.length;
+				var->red.offset + var->red.length;
 	}
 }
 
-- 
Ondrej Zary

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