LcdPlatformNullLib.c File Reference

#include <Base.h>
#include <Uefi/UefiBaseType.h>
#include <Library/DebugLib.h>
#include <Library/LcdPlatformLib.h>

Go to the source code of this file.

Functions
EFI_STATUS	LcdPlatformInitializeDisplay (IN EFI_HANDLE Handle)
EFI_STATUS	LcdPlatformGetVram (OUT EFI_PHYSICAL_ADDRESS *VramBaseAddress, OUT UINTN *VramSize)
UINT32	LcdPlatformGetMaxMode (VOID)
EFI_STATUS	LcdPlatformSetMode (IN UINT32 ModeNumber)
EFI_STATUS	LcdPlatformQueryMode (IN UINT32 ModeNumber, OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info)
EFI_STATUS	LcdPlatformGetTimings (IN UINT32 ModeNumber, OUT SCAN_TIMINGS **Horizontal, OUT SCAN_TIMINGS **Vertical)
EFI_STATUS	LcdPlatformGetBpp (IN UINT32 ModeNumber, OUT LCD_BPP *Bpp)

Detailed Description

Copyright (c) 2017, Linaro, Ltd. All rights reserved. Copyright (c) 2018, Arm Limited. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file LcdPlatformNullLib.c.

Function Documentation

LcdPlatformGetBpp()

EFI_STATUS LcdPlatformGetBpp	(	IN UINT32	ModeNumber,
		OUT LCD_BPP *	Bpp
	)

Return bits per pixel information for a mode number.

Parameters

[in]	ModeNumber	Mode Number.
[out]	Bpp	Pointer to value bits per pixel information.

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 138 of file LcdPlatformNullLib.c.

LcdPlatformGetMaxMode()

UINT32 LcdPlatformGetMaxMode

(

VOID

)

Return total number of modes supported.

Note: Valid mode numbers are 0 to MaxMode - 1 See Section 12.9 of the UEFI Specification 2.7

Return values

UINT32

Zero number of modes supported in a NULL library implementation.

Definition at line 60 of file LcdPlatformNullLib.c.

LcdPlatformGetTimings()

EFI_STATUS LcdPlatformGetTimings	(	IN UINT32	ModeNumber,
		OUT SCAN_TIMINGS **	Horizontal,
		OUT SCAN_TIMINGS **	Vertical
	)

Return display timing information for the requested mode number.

Parameters

[in]	ModeNumber	Mode Number.
[out]	HRes	Pointer to horizontal resolution.
[out]	HSync	Pointer to horizontal sync width.
[out]	HBackPorch	Pointer to horizontal back porch.
[out]	HFrontPorch	Pointer to horizontal front porch.
[out]	VRes	Pointer to vertical resolution.
[out]	VSync	Pointer to vertical sync width.
[out]	VBackPorch	Pointer to vertical back porch.
[out]	VFrontPorch	Pointer to vertical front porch.

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 118 of file LcdPlatformNullLib.c.

LcdPlatformGetVram()

EFI_STATUS LcdPlatformGetVram	(	OUT EFI_PHYSICAL_ADDRESS *	VramBaseAddress,
		OUT UINTN *	VramSize
	)

Allocate VRAM memory in DRAM for the framebuffer (unless it is reserved already).

The allocated address can be used to set the framebuffer.

Parameters

[out]	VramBaseAddress	A pointer to the framebuffer address.
[out]	VramSize	A pointer to the size of the frame buffer in bytes

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 42 of file LcdPlatformNullLib.c.

LcdPlatformInitializeDisplay()

EFI_STATUS LcdPlatformInitializeDisplay

(

IN EFI_HANDLE

Handle

)

Platform related initialization function.

Parameters

[in]

Handle

Handle to the LCD device instance.

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 22 of file LcdPlatformNullLib.c.

LcdPlatformQueryMode()

EFI_STATUS LcdPlatformQueryMode	(	IN UINT32	ModeNumber,
		OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *	Info
	)

Return information for the requested mode number.

Parameters

[in]	ModeNumber	Mode Number.
[out]	Info	Pointer for returned mode information (on success).

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 93 of file LcdPlatformNullLib.c.

LcdPlatformSetMode()

EFI_STATUS LcdPlatformSetMode

(

IN UINT32

ModeNumber

)

Set the requested display mode.

Parameters

[in]

ModeNumber

Mode Number.

Return values

EFI_UNSUPPORTED

Interface is not supported.

Definition at line 75 of file LcdPlatformNullLib.c.