gma: Add G45 support
The following ports are implemented: HDMI/DVI, VGA, LVDS and DP.
Tested with gfx_test and coreboot on a Thinkpad X200 (GM45).
Change-Id: Ifc05a1516329a61772af84558e5bfceb4d4ca277
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/21295
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: Nico Huber <nico.h@gmx.de>
diff --git a/common/g45/hw-gfx-gma-gmch-hdmi.adb b/common/g45/hw-gfx-gma-gmch-hdmi.adb
new file mode 100644
index 0000000..4c84f36
--- /dev/null
+++ b/common/g45/hw-gfx-gma-gmch-hdmi.adb
@@ -0,0 +1,97 @@
+--
+-- 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; 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.Registers;
+
+with HW.Debug;
+with GNAT.Source_Info;
+
+package body HW.GFX.GMA.GMCH.HDMI
+is
+
+ GMCH_HDMI_ENABLE : constant := 1 * 2 ** 31;
+ GMCH_HDMI_COLOR_FORMAT_8BPC : constant := 0 * 2 ** 26;
+ GMCH_HDMI_COLOR_FORMAT_12BPC : constant := 3 * 2 ** 26;
+ GMCH_HDMI_COLOR_FORMAT_MASK : constant := 7 * 2 ** 26;
+ GMCH_HDMI_SDVO_ENCODING_SDVO : constant := 0 * 2 ** 10;
+ GMCH_HDMI_SDVO_ENCODING_HDMI : constant := 2 * 2 ** 10;
+ GMCH_HDMI_SDVO_ENCODING_MASK : constant := 3 * 2 ** 10;
+ GMCH_HDMI_MODE_SELECT_HDMI : constant := 1 * 2 ** 9;
+ GMCH_HDMI_MODE_SELECT_DVI : constant := 0 * 2 ** 9;
+ GMCH_HDMI_VSYNC_ACTIVE_HIGH : constant := 1 * 2 ** 4;
+ GMCH_HDMI_HSYNC_ACTIVE_HIGH : constant := 1 * 2 ** 3;
+ GMCH_HDMI_PORT_DETECT : constant := 1 * 2 ** 2;
+
+ GMCH_HDMI_MASK : constant Word32 :=
+ GMCH_PORT_PIPE_SELECT_MASK or
+ GMCH_HDMI_ENABLE or
+ GMCH_HDMI_COLOR_FORMAT_MASK or
+ GMCH_HDMI_SDVO_ENCODING_MASK or
+ GMCH_HDMI_MODE_SELECT_HDMI or
+ GMCH_HDMI_HSYNC_ACTIVE_HIGH or
+ GMCH_HDMI_VSYNC_ACTIVE_HIGH;
+
+ type GMCH_HDMI_Array is array (GMCH_HDMI_Port) of Registers.Registers_Index;
+ GMCH_HDMI : constant GMCH_HDMI_Array := GMCH_HDMI_Array'
+ (DIGI_B => Registers.GMCH_HDMIB,
+ DIGI_C => Registers.GMCH_HDMIC);
+
+ ----------------------------------------------------------------------------
+
+ procedure On (Port_Cfg : in Port_Config;
+ Pipe : in Pipe_Index)
+ is
+ Polarity : constant Word32 :=
+ (if Port_Cfg.Mode.H_Sync_Active_High then
+ GMCH_HDMI_HSYNC_ACTIVE_HIGH else 0) or
+ (if Port_Cfg.Mode.V_Sync_Active_High then
+ GMCH_HDMI_VSYNC_ACTIVE_HIGH else 0);
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ Registers.Unset_And_Set_Mask
+ (Register => GMCH_HDMI (Port_Cfg.Port),
+ Mask_Unset => GMCH_HDMI_MASK,
+ Mask_Set => GMCH_HDMI_ENABLE or
+ GMCH_PORT_PIPE_SELECT (Pipe) or
+ GMCH_HDMI_SDVO_ENCODING_HDMI or
+ GMCH_HDMI_MODE_SELECT_HDMI or
+ Polarity);
+ end On;
+
+ ----------------------------------------------------------------------------
+
+ procedure Off (Port : GMCH_HDMI_Port)
+ is
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ Registers.Unset_And_Set_Mask
+ (Register => GMCH_HDMI (Port),
+ Mask_Unset => GMCH_HDMI_MASK,
+ Mask_Set => GMCH_HDMI_HSYNC_ACTIVE_HIGH or
+ GMCH_HDMI_VSYNC_ACTIVE_HIGH);
+ end Off;
+
+ procedure All_Off
+ is
+ begin
+ pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
+
+ for Port in GMCH_HDMI_Port loop
+ Off (Port);
+ end loop;
+ end All_Off;
+
+end HW.GFX.GMA.GMCH.HDMI;