Initial upstream commit
The history contained unlicensed code so everything got squashed, sorry.
Change-Id: I9f5775208f9df6fb29074bf3bc498f68cb17b3a0
Signed-off-by: Nico Huber <nico.huber@secunet.com>
diff --git a/common/hw-gfx-gma-connector_info.adb b/common/hw-gfx-gma-connector_info.adb
new file mode 100644
index 0000000..bec59fa
--- /dev/null
+++ b/common/hw-gfx-gma-connector_info.adb
@@ -0,0 +1,136 @@
+--
+-- Copyright (C) 2015-2016 secunet Security Networks AG
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; version 2 of the License.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU General Public License for more details.
+--
+
+with HW.GFX.I2C;
+with HW.GFX.GMA.Config;
+with HW.GFX.GMA.Panel;
+with HW.GFX.GMA.I2C;
+with HW.GFX.GMA.DP_Info;
+with HW.GFX.GMA.DP_Aux_Ch;
+
+with HW.Debug;
+with GNAT.Source_Info;
+
+package body HW.GFX.GMA.Connector_Info is
+
+ function To_DP (Port_Cfg : Port_Config) return DP_Port
+ is
+ begin
+ return
+ (if Port_Cfg.Port = DIGI_A then
+ DP_A
+ else
+ (case Port_Cfg.PCH_Port is
+ when PCH_DP_B => DP_B,
+ when PCH_DP_C => DP_C,
+ when PCH_DP_D => DP_D,
+ when others => DP_Port'First));
+ end To_DP;
+
+ ----------------------------------------------------------------------------
+
+ procedure Read_EDID
+ (Raw_EDID : out EDID.Raw_EDID_Data;
+ Port_Cfg : in Port_Config;
+ Success : out Boolean)
+ is
+ Raw_EDID_Length : GFX.I2C.Transfer_Length := Raw_EDID'Length;
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ for I in 1 .. 2 loop
+ if Port_Cfg.Display = DP then
+ DP_Aux_Ch.I2C_Read
+ (Port => To_DP (Port_Cfg),
+ Address => 16#50#,
+ Length => Raw_EDID_Length,
+ Data => Raw_EDID,
+ Success => Success);
+ else
+ I2C.I2C_Read
+ (Port => Port_Cfg.PCH_Port,
+ Address => 16#50#,
+ Length => Raw_EDID_Length,
+ Data => Raw_EDID,
+ Success => Success);
+ end if;
+ exit when not Success; -- don't retry if reading itself failed
+
+ pragma Debug (Debug.Put_Buffer ("EDID", Raw_EDID, Raw_EDID_Length));
+ Success := EDID.Valid (Raw_EDID);
+ exit when Success;
+ end loop;
+ end Read_EDID;
+
+ ----------------------------------------------------------------------------
+
+ procedure Preferred_Link_Setting
+ (Port_Cfg : in out Port_Config;
+ Success : out Boolean) is
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ if Port_Cfg.Display = DP then
+ if Port_Cfg.Port = DIGI_A then
+ if GMA.Config.Use_PP_VDD_Override then
+ Panel.VDD_Override;
+ else
+ Panel.On;
+ end if;
+ end if;
+
+ DP_Info.Read_Caps
+ (Link => Port_Cfg.DP,
+ Port => To_DP (Port_Cfg),
+ Success => Success);
+ if Success then
+ DP_Info.Preferred_Link_Setting
+ (Link => Port_Cfg.DP,
+ Mode => Port_Cfg.Mode,
+ Success => Success);
+ end if;
+ else
+ Success := True;
+ end if;
+ end Preferred_Link_Setting;
+
+ procedure Next_Link_Setting
+ (Port_Cfg : in out Port_Config;
+ Success : out Boolean)
+ is
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ if Port_Cfg.Display = DP then
+ DP_Info.Next_Link_Setting
+ (Link => Port_Cfg.DP,
+ Mode => Port_Cfg.Mode,
+ Success => Success);
+ else
+ Success := False;
+ end if;
+ end Next_Link_Setting;
+
+ ----------------------------------------------------------------------------
+
+ function Default_BPC (Port_Cfg : Port_Config) return HW.GFX.BPC_Type
+ is
+ begin
+ return
+ (if Port_Cfg.Port = DIGI_A or
+ (Port_Cfg.Is_FDI and Port_Cfg.PCH_Port = PCH_LVDS)
+ then 6
+ else 8);
+ end Default_BPC;
+
+end HW.GFX.GMA.Connector_Info;