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drivers/intel/gma: Use scaling to simplify fb config 

Utilize libgfxinit's support for scaling to simplify the framebuffer
configuration. In case of multiple displays of different resolutions,
we had configured one framebuffer big enough for their union, each
display only showing its respective upper left window. Instead, we use
the smallest resolution now and show the whole image on all displays.

Change-Id: I70a9d92f88ef891703829945264f94ac7eff09b0
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17492
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Nico Huber 2016-11-08 12:29:50 +01:00 committed by Nico Huber
parent 66203df660
commit a4facf80f2
1 changed files with 11 additions and 18 deletions
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29
src/drivers/intel/gma/hires_fb/gma.adb
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@ -59,9 +59,8 @@ is
success : boolean;
stride : Width_Type;
max_h : pos16 := 1;
max_v : pos16 := 1;
min_h : pos16 := pos16'last;
min_v : pos16 := pos16'last;
begin
lightup_ok := 0;
@ -77,30 +76,24 @@ is
for i in Config_Index loop
exit when configs (i).Port = Disabled;
max_h := pos16'max (max_h, configs (i).Mode.H_Visible);
max_v := pos16'max (max_v, configs (i).Mode.V_Visible);
min_h := pos16'min (min_h, configs (i).Mode.H_Visible);
min_v := pos16'min (min_v, configs (i).Mode.V_Visible);
end loop;
stride := ((Width_Type (max_h) + 63) / 64) * 64;
fb :=
(Width => Width_Type (min_h),
Height => Height_Type (min_v),
BPC => 8,
Stride => ((Width_Type (min_h) + 63) / 64) * 64,
Offset => 0);
for i in Config_Index loop
exit when configs (i).Port = Disabled;
configs (i).Framebuffer :=
(Width => Width_Type (configs (i).Mode.H_Visible),
Height => Height_Type (configs (i).Mode.V_Visible),
BPC => 8,
Stride => stride,
Offset => 0);
configs (i).Framebuffer := fb;
end loop;
HW.GFX.GMA.Dump_Configs (configs);
fb :=
(Width => Width_Type (max_h),
Height => Height_Type (max_v),
BPC => 8,
Stride => stride,
Offset => 0);
HW.GFX.GMA.Setup_Default_GTT (fb, phys_fb);
HW.GFX.Framebuffer_Filler.Fill (linear_fb, fb);