ArmPlatformPkg: Add support for PL111 Lcd driver
This driver implements the interface for the PL111 Lcd controller. The LcdPlatformLib allows to set the platform specific requirements needed by the platform for setting the LCD (oscillators, etc). ArmPlatformPkg/ArmVExpressPkg: Implement LcdPlatformLib This library exports the supported resolutions. It also allocates the memory for the framebuffer and send the correct settings to the VExpress motherboard microcontroller. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11786 6f19259b-4bc3-4df7-8a09-765794883524
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ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c
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ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c
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/** @file PL111Lcd.c
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Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/LcdPlatformLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PcdLib.h>
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#include <Drivers/PL111Lcd.h>
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#include "LcdGraphicsOutputDxe.h"
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/**********************************************************************
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*
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* This file contains all the bits of the PL111 that are
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* platform independent.
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*
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**********************************************************************/
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EFI_STATUS
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PL111Indentify (
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VOID
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)
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{
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// Check if this is a PrimeCell Peripheral
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if ( ( MmioRead8( PL111_REG_CLCD_P_CELL_ID_0 ) != 0x0D )
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|| ( MmioRead8( PL111_REG_CLCD_P_CELL_ID_1 ) != 0xF0 )
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|| ( MmioRead8( PL111_REG_CLCD_P_CELL_ID_2 ) != 0x05 )
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|| ( MmioRead8( PL111_REG_CLCD_P_CELL_ID_3 ) != 0xB1 ) ) {
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return EFI_NOT_FOUND;
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}
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// Check if this PrimeCell Peripheral is the PL111 LCD
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if ( ( MmioRead8( PL111_REG_CLCD_PERIPH_ID_0 ) != 0x11 )
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|| ( MmioRead8( PL111_REG_CLCD_PERIPH_ID_1 ) != 0x11 )
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|| ( (MmioRead8( PL111_REG_CLCD_PERIPH_ID_2 ) & 0xF) != 0x04 )
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|| ( MmioRead8( PL111_REG_CLCD_PERIPH_ID_3 ) != 0x00 ) ) {
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return EFI_NOT_FOUND;
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}
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return EFI_SUCCESS;
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}
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EFI_STATUS
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LcdInitialize (
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IN EFI_PHYSICAL_ADDRESS VramBaseAddress
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)
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{
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EFI_STATUS Status = EFI_SUCCESS;
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// Check if the PL111 is fitted on this motherboard
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Status = PL111Indentify();
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if (EFI_ERROR( Status )) {
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return EFI_DEVICE_ERROR;
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}
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// Define start of the VRAM. This never changes for any graphics mode
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MmioWrite32(PL111_REG_LCD_UP_BASE, (UINT32) VramBaseAddress);
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MmioWrite32(PL111_REG_LCD_LP_BASE, 0); // We are not using a double buffer
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// Disable all interrupts from the PL111
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MmioWrite32(PL111_REG_LCD_IMSC, 0);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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LcdSetMode (
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IN UINT32 ModeNumber
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)
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{
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EFI_STATUS Status;
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UINT32 HRes;
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UINT32 HSync;
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UINT32 HBackPorch;
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UINT32 HFrontPorch;
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UINT32 VRes;
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UINT32 VSync;
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UINT32 VBackPorch;
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UINT32 VFrontPorch;
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UINT32 LcdControl;
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LCD_BPP LcdBpp;
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// Set the video mode timings and other relevant information
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Status = LcdPlatformGetTimings (ModeNumber,
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&HRes,&HSync,&HBackPorch,&HFrontPorch,
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&VRes,&VSync,&VBackPorch,&VFrontPorch);
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ASSERT_EFI_ERROR (Status);
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if (EFI_ERROR( Status )) {
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return EFI_DEVICE_ERROR;
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}
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Status = LcdPlatformGetBpp (ModeNumber,&LcdBpp);
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ASSERT_EFI_ERROR (Status);
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if (EFI_ERROR( Status )) {
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return EFI_DEVICE_ERROR;
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}
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// Disable the CLCD_LcdEn bit
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LcdControl = MmioRead32( PL111_REG_LCD_CONTROL);
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MmioWrite32(PL111_REG_LCD_CONTROL, LcdControl & ~1);
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// Set Timings
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MmioWrite32 (PL111_REG_LCD_TIMING_0, HOR_AXIS_PANEL(HBackPorch, HFrontPorch, HSync, HRes));
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MmioWrite32 (PL111_REG_LCD_TIMING_1, VER_AXIS_PANEL(VBackPorch, VFrontPorch, VSync, VRes));
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MmioWrite32 (PL111_REG_LCD_TIMING_2, CLK_SIG_POLARITY(HRes));
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MmioWrite32 (PL111_REG_LCD_TIMING_3, 0);
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// PL111_REG_LCD_CONTROL
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LcdControl = PL111_CTRL_LCD_EN | PL111_CTRL_LCD_BPP(LcdBpp) | PL111_CTRL_LCD_TFT | PL111_CTRL_BGR;
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MmioWrite32(PL111_REG_LCD_CONTROL, LcdControl);
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// Turn on power to the LCD Panel
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LcdControl |= PL111_CTRL_LCD_PWR;
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MmioWrite32(PL111_REG_LCD_CONTROL, LcdControl);
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return EFI_SUCCESS;
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}
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VOID
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LcdShutdown (
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VOID
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)
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{
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// Nothing to do in terms of hardware.
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// We could switch off the monitor display if required
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//TODO: ImplementMe
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}
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