s5pv210 LCD控制器初始化

s5pv210 LCD控制器功能模块框图：

初始化中对寄存器的配置：

（1）VIDCON0：时钟信号配置

（2）VIDCON1:信号极性设置

（3）VIDTCON0：VSYNC时序配置

（4）VIDTCON1：HSYNC时序配置

（5）VIDTCON2：像素设置

（6）WINCON0：设置像素对应数据的特征

（7）SHODOWCON：通道使能

（8）VIDOSD0A：窗口在LCD屏幕中左上角坐标的定位

（9）VIDOSD0B：设置窗口在LCD屏幕中右下角坐标的定位

（10）VIDOSD0C：确定窗口的大小

（11）VIDW00ADD0B0：framebuffer的起始地址设置

（12）VIDW00ADD1B0：framebuffer的末位地址设置

（13）VID00ADD2：设置framebuffer在虚拟屏幕中的偏移量和尺寸，用于反推framebuffer的末位地址

（14）DISPLAY_CONTROL：选择模式输出

初始化源码参考：

#include "stdio.h"
#include "s5pv210.h"


void lcd_PortInit()
{
	rGPF0CON =0x22222222;
	rGPF1CON =0x22222222;
	rGPF2CON =0x22222222;
	rGPF3CON =0x22222222;
}

void lcd_Init()
{
	//VIDCON0[0:1]=0B11;[2]=0;[4]=1;[6:13]=4;[26:28]=000;
	rVIDCON0 |= (0X3<<0);
	rVIDCON0 &= ~(0X1<<2);
	rVIDCON0 |= (0X1<<4);
	rVIDCON0 &= ~(0XFF<<6);
	rVIDCON0 |= (0X4<<6);
	rVIDCON0 &= ~(0X7<<26);

	//VIDCON1[4]=0;[5]=1;[6]=1;
	rVIDCON1 &= ~(0X1<<4);	//Specifies the VDEN signal polarity
	rVIDCON1 |= (0X1<<5);	//Specifies the VSYNC pulse polarity. 
	rVIDCON1 |= (0X1<<6);	//Specifies the HSYNC pulse polarity

	//VIDTCON0[0:7]=19;[8:15]=21;[16:23]=2;
	rVIDTCON0 &= ~(0XFF<<0);	//VSPW
	rVIDTCON0 |= (0X13<<0);
	rVIDTCON0 &= ~(0XFF<<8);	//VFPD
	rVIDTCON0 |= (0X15<<8);
	rVIDTCON0 &= ~(0XFF<<16);	//VBPD	
	rVIDTCON0 |= (0X2<<16);

	//VIDTCON1[0:7]=39;[8:15]=29;[16:23]=5;
	rVIDTCON1 &= ~(0XFF<<0);	//HSPW
	rVIDTCON1 |= (0X27<<0);
	rVIDTCON1 &= ~(0XFF<<8);	//HFPD
	rVIDTCON1 |= (0X1D<<8);
	rVIDTCON1 &= ~(0XFF<<16);	//HBPD	
	rVIDTCON1 |= (0X5<<16);

	//VIDTCON2[0:10]=799;[11:21]=479;Determines the size of display
	rVIDTCON2 &= ~(0X7FF<<0);
	rVIDTCON2 |= (0X31F);	//HOZVAL = (Horizontal display size) -1 
	rVIDTCON2 &= ~(0X7FF<<11);
	rVIDTCON2 |= (0X1DF<<11);	//LINEVAL = (Vertical display size) –1

	//WINCON0[0]=1;[2:5]=0XB;[15]=1;
	rWINCON0 |= (0X1<<0);
	rWINCON0 &= ~(0XF<<2);
	rWINCON0 |= (0XB<<2);	//1011 = Unpacked 24 bpp ( non-palletized R:8-G:8-B:8 )
	rWINCON0 |= (0X1<<15);	//Specifies the Word swap control bit

	//SHADOWCON[0]=1;
	rSHADOWCON |= (0X1<<0);	//Enables Channel 0

	//VIDOSD0A[0:10]=0;[11:21]=0;
	rVIDOSD0A &= ~(0X7FF<<0);	//Specifies the vertical screen coordinate for left top pixel of OSD image
	rVIDOSD0A &= ~(0X7FF<<11);	//Specifies the horizontal screen coordinate for left top pixel of OSD image.

	//VIDOSD0B[0:10]=479;[11:21]=799;
	rVIDOSD0B &= ~(0X7FF<<0);	
	rVIDOSD0B |= (0X1DF<<0);
	rVIDOSD0B &= ~(0X7FF<<11);
	rVIDOSD0B |= (0X31F<<11);

	//VIDOSD0C[0:23]=800*480
	rVIDOSD0C &= ~(0XFFFFFF);
	rVIDOSD0C |= (0X5DC00);	//Specifies the Window Size

	//VIDW00ADD0B0[0:31]=0X42000000
	rVIDW00ADD0B0 &= ~(0XFFFFFFFF);
	rVIDW00ADD0B0 |= (0X42000000);	// Specifies window 0’s buffer start address

	//VIDW00ADD1B0[0:31]=0X4200000+800*480*4
	rVIDW00ADD1B0 &= ~(0XFFFFFFFF);
	rVIDW00ADD1B0 |= (0X42177000);	//Specifies window 0’s buffer end address

	//VIDW00ADD2[0:12]=800;[13:25]=0;
	rVIDW00ADD2 &= ~(0X3FFFFFF);
	rVIDW00ADD2 |= (0X320<<0);

	//DISPLAY_CONTROL[0:1]=0B10
	rDISPLAY_CONTROL &= ~(0X3<<0);
	rDISPLAY_CONTROL |= (0X1<<1);	//10: RGB=FIMD I80=FIMD ITU=FIMD
}

void delay()
{
	int i,j;
	for(i=0;i<100;i++)
		for(j=0;j<100;j++);
}

void lcd_screen(int i,int j,int i1,int j1,int color)		//(i,j) is the site of the focus.
{
	unsigned int *fbuf =(unsigned int *)0x42000000;
	int x,y;
	for(y=0;y<480;y++)
	{
		for(x=0;x<800;x++)
		{	
			if(((x-i)*(x-i)+(y-j)*(y-j))<=900)
				*(fbuf+800*y+x)=0xffff00;
			else if(((x-i1)*(x-i1)+(y-j1)*(y-j1))<=900)
				*(fbuf+800*y+x)=0x00ffff;
			else
				*(fbuf+800*y+x)=color;
		}
	}
	delay();	
}

int fimd_lcd()
{
	int x=400,y=240,x1=400,y1=240,flag_x=1,flag_y=1,flag_x1=1,flag_y1=1;
	lcd_PortInit();
	lcd_Init();

	while(1)
	{
		if(x==30)
			flag_x=1;	//x have to increase
		if(x==770)
			flag_x=0;	//x have to decrease
		if(y==30)
			flag_y=1;	//y have to increase
		if(y==450)
			flag_y=0;	//y have to decrease
			
		if(x1==30)
			flag_x1=1;	//x1 have to increase
		if(x1==770)
			flag_x1=0;	//x1 have to decrease
		if(y1==30)
			flag_y1=1;	//y1have to increase
		if(y1==450)
			flag_y1=0;	//y1 have to decrease

		if(flag_x)
			x=x+2;
		else 
			x-=2;
		if(flag_y)
			y++;
		else
			y--;

		if(flag_x1)
			x1++;
		else 
			x1--;
		if(flag_y1)
			y1=y1+2;
		else
			y1=y1-2;
		
		lcd_screen(x,y,x1,y1,0xffffff);	
	}
	return 0;
}