>From 2f873819a4b9eb0bd658db1e59408d8f0aeb14b6 Mon Sep 17 00:00:00 2001
From: Sudeep Basavaraj <sudeep.basavaraj@xxxxxx>
Date: Mon, 14 Dec 2009 18:54:51 +0530
Subject: [PATCH] OMAP3630:DSS2:Enable Pre-Multiplied Alpha Support
Enables dss to process color formats with pre-mulitplied alpha values.
With this we can have alpha values defined for each pixel
and hence can have different blending values for each pixel.
Signed-off-by: Sudeep Basavaraj <sudeep.basavaraj@xxxxxx>
Signed-off-by: Kishore Y <kishore.y@xxxxxx>
---
drivers/video/omap2/dss/dispc.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 6dabf4b..5f7819b 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -913,6 +913,11 @@ static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable)
dispc_write_reg(dispc_reg_att[plane], val);
}
+static void _dispc_set_alpha_blend_attrs(enum omap_plane plane, bool enable)
+{
+ REG_FLD_MOD(dispc_reg_att[plane], enable ? 1 : 0, 28, 28);
+}
+
void dispc_enable_replication(enum omap_plane plane, bool enable)
{
int bit;
@@ -1689,6 +1694,9 @@ static int _dispc_setup_plane(enum omap_plane plane,
_dispc_set_rotation_attrs(plane, rotation, mirror, color_mode);
+ if (cpu_is_omap3630() && (plane != OMAP_DSS_VIDEO1))
+ _dispc_set_alpha_blend_attrs(plane, 1);
+
if (plane != OMAP_DSS_VIDEO1)
_dispc_setup_global_alpha(plane, global_alpha);
--
1.5.4.3
Regards,
Kishore Y
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