Nico Huber has uploaded this change for review.

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gma config_helpers: Add Maximum_Dotclock() function

Change-Id: Iaa25e774d38c7af12150523739d902cf8e758674
Signed-off-by: Nico Huber <nico.h@gmx.de>
---
M common/hw-gfx-gma-config_helpers.adb
M common/hw-gfx-gma-config_helpers.ads
2 files changed, 14 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/libgfxinit refs/changes/29/35529/1

diff --git a/common/hw-gfx-gma-config_helpers.adb b/common/hw-gfx-gma-config_helpers.adb
index a86af9e..8614787 100644
--- a/common/hw-gfx-gma-config_helpers.adb
+++ b/common/hw-gfx-gma-config_helpers.adb
@@ -79,6 +79,18 @@
             when DP1 .. DP3      => DP);
    end To_Display_Type;
 
+   function Maximum_Dotclock (Configs : Pipe_Configs) return Frequency_Type
+   is
+      Max : Frequency_Type := Frequency_Type'First;
+   begin
+      for I in Pipe_Index loop
+         if Max < Configs (I).Mode.Dotclock then
+            Max := Configs (I).Mode.Dotclock;
+         end if;
+      end loop;
+      return Max;
+   end Maximum_Dotclock;
+
    ----------------------------------------------------------------------------
 
    -- Prepares link rate and lane count settings for an FDI connection.
diff --git a/common/hw-gfx-gma-config_helpers.ads b/common/hw-gfx-gma-config_helpers.ads
index a2aeb06..4756af2 100644
--- a/common/hw-gfx-gma-config_helpers.ads
+++ b/common/hw-gfx-gma-config_helpers.ads
@@ -28,6 +28,8 @@
 
    function To_Display_Type (Port : Active_Port_Type) return Display_Type;
 
+   function Maximum_Dotclock (Configs : Pipe_Configs) return Frequency_Type;
+
    procedure Fill_Port_Config
      (Port_Cfg :    out Port_Config;
       Pipe     : in     Pipe_Index;

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