/** @file

 Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __OMAP3_DSS_GRAPHICS__
#define __OMAP3_DSS_GRAPHICS__

#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/IoLib.h>

#include <Protocol/DevicePathToText.h>
#include <Protocol/EmbeddedExternalDevice.h>
#include <Protocol/Cpu.h>

#include <Guid/GlobalVariable.h>

#include <Omap3530/Omap3530.h>
#include <TPS65950.h>

typedef struct {
  VENDOR_DEVICE_PATH            Guid;
  EFI_DEVICE_PATH_PROTOCOL      End;
} LCD_GRAPHICS_DEVICE_PATH;

typedef struct {
  UINTN                                 Signature;
  EFI_HANDLE                            Handle;
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  ModeInfo;
  EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE     Mode;
  EFI_GRAPHICS_OUTPUT_PROTOCOL          Gop;
  LCD_GRAPHICS_DEVICE_PATH              DevicePath;
//  EFI_EVENT                             ExitBootServicesEvent;
} LCD_INSTANCE;

#define LCD_INSTANCE_SIGNATURE  SIGNATURE_32('l', 'c', 'd', '0')
#define LCD_INSTANCE_FROM_GOP_THIS(a)     CR (a, LCD_INSTANCE, Gop, LCD_INSTANCE_SIGNATURE)

typedef struct {
  UINTN             Mode;
  UINTN             HorizontalResolution;
  UINTN             VerticalResolution;

  UINT32            DssDivisor;
  UINT32            DispcDivisor;

  UINT32            HSync;
  UINT32            HFrontPorch;
  UINT32            HBackPorch;

  UINT32            VSync;
  UINT32            VFrontPorch;
  UINT32            VBackPorch;
} LCD_MODE;

EFI_STATUS
InitializeDisplay (
  IN LCD_INSTANCE* Instance
);

EFI_STATUS
EFIAPI
LcdGraphicsQueryMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  IN  UINT32                                ModeNumber,
  OUT UINTN                                 *SizeOfInfo,
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
);

EFI_STATUS
EFIAPI
LcdGraphicsSetMode (
  IN EFI_GRAPHICS_OUTPUT_PROTOCOL  *This,
  IN UINT32                        ModeNumber
);

EFI_STATUS
EFIAPI
LcdGraphicsBlt (
  IN EFI_GRAPHICS_OUTPUT_PROTOCOL        *This,
  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL   *BltBuffer,     OPTIONAL
  IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION   BltOperation,
  IN UINTN                               SourceX,
  IN UINTN                               SourceY,
  IN UINTN                               DestinationX,
  IN UINTN                               DestinationY,
  IN UINTN                               Width,
  IN UINTN                               Height,
  IN UINTN                               Delta           OPTIONAL   // Number of BYTES in a row of the BltBuffer
);

// HW registers
#define CM_FCLKEN_DSS   0x48004E00
#define CM_ICLKEN_DSS   0x48004E10

#define DSS_CONTROL     0x48050040
#define DSS_SYSCONFIG   0x48050010
#define DSS_SYSSTATUS   0x48050014

#define DISPC_CONTROL   0x48050440
#define DISPC_CONFIG    0x48050444
#define DISPC_SIZE_LCD  0x4805047C
#define DISPC_TIMING_H  0x48050464
#define DISPC_TIMING_V  0x48050468

#define CM_CLKSEL_DSS   0x48004E40
#define DISPC_DIVISOR   0x48050470
#define DISPC_POL_FREQ  0x4805046C

#define DISPC_GFX_TABLE_BA 0x480504B8
#define DISPC_GFX_BA0   0x48050480
#define DISPC_GFX_BA1   0x48050484
#define DISPC_GFX_POS   0x48050488
#define DISPC_GFX_SIZE  0x4805048C
#define DISPC_GFX_ATTR  0x480504A0
#define DISPC_GFX_PRELD 0x4805062C

#define DISPC_DEFAULT_COLOR_0 0x4805044C

//#define DISPC_IRQSTATUS

// Bits
#define EN_TV           0x4
#define EN_DSS2         0x2
#define EN_DSS1         0x1
#define EN_DSS          0x1

#define DSS_SOFTRESET   0x2
#define DSS_RESETDONE   0x1

#define BYPASS_MODE     (BIT15 | BIT16)

#define LCDENABLE       BIT0
#define ACTIVEMATRIX    BIT3
#define GOLCD           BIT5
#define DATALINES24     (BIT8 | BIT9)
#define LCDENABLESIGNAL BIT28

#define GFXENABLE       BIT0
#define RGB16           (0x6 << 1)
#define BURSTSIZE16     (0x2 << 6)

#define CLEARLOADMODE   ~(BIT2 | BIT1)
#define LOAD_FRAME_ONLY BIT2

#endif