gma skl: Add DDI buffer translations
Change-Id: Ibb058de78f671b94ee788f30342184a8c31a1154
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20167
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/common/skylake/Makefile.inc b/common/skylake/Makefile.inc
index c59ab8e..cf720bf 100644
--- a/common/skylake/Makefile.inc
+++ b/common/skylake/Makefile.inc
@@ -1,3 +1,4 @@
+gfxinit-y += hw-gfx-gma-connectors-ddi-buffers.adb
gfxinit-y += hw-gfx-gma-connectors-ddi-buffers.ads
gfxinit-y += hw-gfx-gma-ddi_phy.ads
gfxinit-y += hw-gfx-gma-plls-dpll.adb
diff --git a/common/skylake/hw-gfx-gma-connectors-ddi-buffers.adb b/common/skylake/hw-gfx-gma-connectors-ddi-buffers.adb
new file mode 100644
index 0000000..34ee980
--- /dev/null
+++ b/common/skylake/hw-gfx-gma-connectors-ddi-buffers.adb
@@ -0,0 +1,119 @@
+--
+-- Copyright (C) 2017 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; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- 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.GMA.Config;
+
+package body HW.GFX.GMA.Connectors.DDI.Buffers
+is
+
+ subtype Skylake_HDMI_Range is DDI_HDMI_Buf_Trans_Range range 0 .. 10;
+
+ type HDMI_Buf_Trans is record
+ Trans1 : Word32;
+ Trans2 : Word32;
+ end record;
+ type HDMI_Buf_Trans_Array is array (Skylake_HDMI_Range) of HDMI_Buf_Trans;
+
+ ----------------------------------------------------------------------------
+
+ Skylake_Trans_EDP : constant Buf_Trans_Array :=
+ (16#0000_0018#, 16#0000_00a8#,
+ 16#0000_4013#, 16#0000_00a9#,
+ 16#0000_7011#, 16#0000_00a2#,
+ 16#0000_9010#, 16#0000_009c#,
+ 16#0000_0018#, 16#0000_00a9#,
+ 16#0000_6013#, 16#0000_00a2#,
+ 16#0000_7011#, 16#0000_00a6#,
+ 16#0000_0018#, 16#0000_00ab#,
+ 16#0000_7013#, 16#0000_009f#,
+ 16#0000_0018#, 16#0000_00df#);
+
+ Skylake_U_Trans_EDP : constant Buf_Trans_Array :=
+ (16#0000_0018#, 16#0000_00a8#,
+ 16#0000_4013#, 16#0000_00a9#,
+ 16#0000_7011#, 16#0000_00a2#,
+ 16#0000_9010#, 16#0000_009c#,
+ 16#0000_0018#, 16#0000_00a9#,
+ 16#0000_6013#, 16#0000_00a2#,
+ 16#0000_7011#, 16#0000_00a6#,
+ 16#0000_2016#, 16#0000_00ab#,
+ 16#0000_5013#, 16#0000_009f#,
+ 16#0000_0018#, 16#0000_00df#);
+
+ Skylake_Trans_DP : constant Buf_Trans_Array :=
+ (16#0000_2016#, 16#0000_00a0#,
+ 16#0000_5012#, 16#0000_009b#,
+ 16#0000_7011#, 16#0000_0088#,
+ 16#8000_9010#, 16#0000_00c0#,
+ 16#0000_2016#, 16#0000_009b#,
+ 16#0000_5012#, 16#0000_0088#,
+ 16#8000_7011#, 16#0000_00c0#,
+ 16#0000_2016#, 16#0000_00df#,
+ 16#8000_5012#, 16#0000_00c0#,
+ others => 0);
+
+ Skylake_U_Trans_DP : constant Buf_Trans_Array :=
+ (16#0000_201b#, 16#0000_00a2#,
+ 16#0000_5012#, 16#0000_0088#,
+ 16#8000_7011#, 16#0000_00cd#,
+ 16#8000_9010#, 16#0000_00c0#,
+ 16#0000_201b#, 16#0000_009d#,
+ 16#8000_5012#, 16#0000_00c0#,
+ 16#8000_7011#, 16#0000_00c0#,
+ 16#0000_2016#, 16#0000_0088#,
+ 16#8000_5012#, 16#0000_00c0#,
+ others => 0);
+
+ Skylake_Trans_HDMI : constant HDMI_Buf_Trans_Array :=
+ ((16#0000_0018#, 16#0000_00ac#),
+ (16#0000_5012#, 16#0000_009d#),
+ (16#0000_7011#, 16#0000_0088#),
+ (16#0000_0018#, 16#0000_00a1#),
+ (16#0000_0018#, 16#0000_0098#),
+ (16#0000_4013#, 16#0000_0088#),
+ (16#8000_6012#, 16#0000_00cd#),
+ (16#0000_0018#, 16#0000_00df#),
+ (16#8000_3015#, 16#0000_00cd#),
+ (16#8000_3015#, 16#0000_00c0#),
+ (16#8000_0018#, 16#0000_00c0#));
+
+ ----------------------------------------------------------------------------
+
+ procedure Translations (Trans : out Buf_Trans_Array; Port : Digital_Port)
+ is
+ DDIA_Low_Voltage_Swing : constant Boolean :=
+ Config.EDP_Low_Voltage_Swing and then Port = DIGI_A;
+
+ HDMI_Trans : constant Skylake_HDMI_Range :=
+ (if Config.DDI_HDMI_Buffer_Translation in Skylake_HDMI_Range
+ then Config.DDI_HDMI_Buffer_Translation
+ else Config.Default_DDI_HDMI_Buffer_Translation);
+ begin
+ Trans :=
+ (case Config.CPU_Var is
+ when Normal =>
+ (if DDIA_Low_Voltage_Swing
+ then Skylake_Trans_EDP
+ else Skylake_Trans_DP),
+ when ULT =>
+ (if DDIA_Low_Voltage_Swing
+ then Skylake_U_Trans_EDP
+ else Skylake_U_Trans_DP));
+ if not DDIA_Low_Voltage_Swing then
+ Trans (18) := Skylake_Trans_HDMI (HDMI_Trans).Trans1;
+ Trans (19) := Skylake_Trans_HDMI (HDMI_Trans).Trans2;
+ end if;
+ end Translations;
+
+end HW.GFX.GMA.Connectors.DDI.Buffers;
diff --git a/common/skylake/hw-gfx-gma-connectors-ddi-buffers.ads b/common/skylake/hw-gfx-gma-connectors-ddi-buffers.ads
index 499226a..cc4b9ed 100644
--- a/common/skylake/hw-gfx-gma-connectors-ddi-buffers.ads
+++ b/common/skylake/hw-gfx-gma-connectors-ddi-buffers.ads
@@ -15,7 +15,6 @@
private package HW.GFX.GMA.Connectors.DDI.Buffers
is
- procedure Translations (Trans : out Buf_Trans_Array; Port : Digital_Port)
- is null;
+ procedure Translations (Trans : out Buf_Trans_Array; Port : Digital_Port);
end HW.GFX.GMA.Connectors.DDI.Buffers;