ArmPlatformPkg: Apply uncrustify changes

[mirror_edk2.git] / ArmPlatformPkg / Library / HdLcd / HdLcd.c

/** @file\r
  This file contains the platform independent parts of HdLcd\r
\r
  Copyright (c) 2011-2018, ARM Ltd. All rights reserved.<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Library/DebugLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/LcdHwLib.h>\r
#include <Library/LcdPlatformLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/PcdLib.h>\r
\r
#include "HdLcd.h"\r
\r
#define BYTES_PER_PIXEL  4\r
\r
/** Initialize display.\r
\r
  @param[in]  VramBaseAddress    Address of the framebuffer.\r
\r
  @retval EFI_SUCCESS            Display initialization successful.\r
**/\r
EFI_STATUS\r
LcdInitialize (\r
  IN EFI_PHYSICAL_ADDRESS  VramBaseAddress\r
  )\r
{\r
  // Disable the controller\r
  MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_DISABLE);\r
\r
  // Disable all interrupts\r
  MmioWrite32 (HDLCD_REG_INT_MASK, 0);\r
\r
  // Define start of the VRAM. This never changes for any graphics mode\r
  MmioWrite32 (HDLCD_REG_FB_BASE, (UINT32)VramBaseAddress);\r
\r
  // Setup various registers that never change\r
  MmioWrite32 (HDLCD_REG_BUS_OPTIONS, (4 << 8) | HDLCD_BURST_8);\r
\r
  MmioWrite32 (HDLCD_REG_POLARITIES, HDLCD_DEFAULT_POLARITIES);\r
\r
  MmioWrite32 (\r
    HDLCD_REG_PIXEL_FORMAT,\r
    HDLCD_LITTLE_ENDIAN | HDLCD_4BYTES_PER_PIXEL\r
    );\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/** Set requested mode of the display.\r
\r
  @param[in] ModeNumber          Display mode number.\r
\r
  @retval EFI_SUCCESS            Display mode set successfully.\r
  @retval !(EFI_SUCCESS)         Other errors.\r
**/\r
EFI_STATUS\r
LcdSetMode (\r
  IN UINT32  ModeNumber\r
  )\r
{\r
  EFI_STATUS    Status;\r
  SCAN_TIMINGS  *Horizontal;\r
  SCAN_TIMINGS  *Vertical;\r
\r
  EFI_GRAPHICS_PIXEL_FORMAT  PixelFormat;\r
\r
  EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  ModeInfo;\r
\r
  // Set the video mode timings and other relevant information\r
  Status = LcdPlatformGetTimings (\r
             ModeNumber,\r
             &Horizontal,\r
             &Vertical\r
             );\r
  if (EFI_ERROR (Status)) {\r
    ASSERT_EFI_ERROR (Status);\r
    return Status;\r
  }\r
\r
  ASSERT (Horizontal != NULL);\r
  ASSERT (Vertical != NULL);\r
\r
  // Get the pixel format information.\r
  Status = LcdPlatformQueryMode (ModeNumber, &ModeInfo);\r
  if (EFI_ERROR (Status)) {\r
    ASSERT_EFI_ERROR (Status);\r
    return Status;\r
  }\r
\r
  // By default PcdArmHdLcdSwapBlueRedSelect is set to false\r
  // However on the Juno platform HW lines for BLUE and RED are swapped\r
  // Therefore PcdArmHdLcdSwapBlueRedSelect is set to TRUE for the Juno platform\r
  PixelFormat = FixedPcdGetBool (PcdArmHdLcdSwapBlueRedSelect)\r
                ? PixelRedGreenBlueReserved8BitPerColor\r
                : PixelBlueGreenRedReserved8BitPerColor;\r
\r
  if (ModeInfo.PixelFormat == PixelFormat) {\r
    MmioWrite32 (HDLCD_REG_RED_SELECT, (8 << 8) | 16);\r
    MmioWrite32 (HDLCD_REG_BLUE_SELECT, (8 << 8) | 0);\r
  } else {\r
    MmioWrite32 (HDLCD_REG_BLUE_SELECT, (8 << 8) | 16);\r
    MmioWrite32 (HDLCD_REG_RED_SELECT, (8 << 8) | 0);\r
  }\r
\r
  MmioWrite32 (HDLCD_REG_GREEN_SELECT, (8 << 8) | 8);\r
\r
  // Disable the controller\r
  MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_DISABLE);\r
\r
  // Update the frame buffer information with the new settings\r
  MmioWrite32 (\r
    HDLCD_REG_FB_LINE_LENGTH,\r
    Horizontal->Resolution * BYTES_PER_PIXEL\r
    );\r
\r
  MmioWrite32 (\r
    HDLCD_REG_FB_LINE_PITCH,\r
    Horizontal->Resolution * BYTES_PER_PIXEL\r
    );\r
\r
  MmioWrite32 (HDLCD_REG_FB_LINE_COUNT, Vertical->Resolution - 1);\r
\r
  // Set the vertical timing information\r
  MmioWrite32 (HDLCD_REG_V_SYNC, Vertical->Sync);\r
  MmioWrite32 (HDLCD_REG_V_BACK_PORCH, Vertical->BackPorch);\r
  MmioWrite32 (HDLCD_REG_V_DATA, Vertical->Resolution - 1);\r
  MmioWrite32 (HDLCD_REG_V_FRONT_PORCH, Vertical->FrontPorch);\r
\r
  // Set the horizontal timing information\r
  MmioWrite32 (HDLCD_REG_H_SYNC, Horizontal->Sync);\r
  MmioWrite32 (HDLCD_REG_H_BACK_PORCH, Horizontal->BackPorch);\r
  MmioWrite32 (HDLCD_REG_H_DATA, Horizontal->Resolution - 1);\r
  MmioWrite32 (HDLCD_REG_H_FRONT_PORCH, Horizontal->FrontPorch);\r
\r
  // Enable the controller\r
  MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_ENABLE);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/** De-initializes the display.\r
**/\r
VOID\r
LcdShutdown (\r
  VOID\r
  )\r
{\r
  // Disable the controller\r
  MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_DISABLE);\r
}\r
\r
/** Check for presence of HDLCD.\r
\r
  @retval EFI_SUCCESS            Returns success if platform implements a HDLCD\r
                                 controller.\r
  @retval EFI_NOT_FOUND          HDLCD display controller not found on the\r
                                 platform.\r
**/\r
EFI_STATUS\r
LcdIdentify (\r
  VOID\r
  )\r
{\r
  if ((MmioRead32 (HDLCD_REG_VERSION) >> 16) == HDLCD_PRODUCT_ID) {\r
    return EFI_SUCCESS;\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r