libgfxinit/common/ironlake/hw-gfx-gma-pch-lvds.adb

59 lines
1.8 KiB
Ada

--
-- 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.GMA.Config;
with HW.GFX.GMA.Registers;
with HW.Debug;
with GNAT.Source_Info;
package body HW.GFX.GMA.PCH.LVDS is
PCH_LVDS_ENABLE : constant := 1 * 2 ** 31;
PCH_LVDS_TWO_CHANNEL : constant := 15 * 2 ** 2;
PCH_LVDS_MASK : constant Word32 :=
PCH_TRANSCODER_SELECT_MASK or
PCH_LVDS_ENABLE or
PCH_LVDS_TWO_CHANNEL;
----------------------------------------------------------------------------
procedure On (Port_Cfg : Port_Config; FDI_Port : FDI_Port_Type)
is
Two_Channel : constant Word32 :=
(if Port_Cfg.Mode.Dotclock >= Config.LVDS_Dual_Threshold then
PCH_LVDS_TWO_CHANNEL else 0);
begin
pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
Registers.Unset_And_Set_Mask
(Register => Registers.PCH_LVDS,
Mask_Unset => PCH_LVDS_MASK,
Mask_Set => PCH_LVDS_ENABLE or
PCH_TRANSCODER_SELECT (FDI_Port) or
Two_Channel);
end On;
----------------------------------------------------------------------------
procedure Off
is
begin
pragma Debug (Debug.Put_Line (GNAT.Source_Info.Enclosing_Entity));
Registers.Unset_Mask (Registers.PCH_LVDS, PCH_LVDS_ENABLE);
end Off;
end HW.GFX.GMA.PCH.LVDS;