dispc_reg_out(VENC_VSTART,0x15);		dispc_reg_out(VENC_VSTARTA,0x15);
				dispc_reg_out(VENC_HINT,1350);   //1100@@@@@@@@@@@@@@@@@@@@@@@@@@@@		dispc_reg_out(VENC_VINT,1150);  //850   @@@@@@@@@@@@@@@@@@@@@@@@@@@		dispc_reg_out(VENC_VSPLS,20);		dispc_reg_out(VENC_HSPLS,30);

		/*設置為并行RGB輸出，standed模式（PAL、NTSC）時序*/
		dispc_reg_out(VENC_VMOD, 0x2013); //0x2013設置為非標準模式時序，設置為2003，小屏幕即可輸出		dispc_reg_out(VENC_DCLKCTL,0x801);  //0x800, 		dispc_reg_out(VENC_DCLKPTN0,0x3);		dispc_reg_out(VENC_DCLKPTN0A,0x3);		dispc_reg_out(VENC_OSDCLK0,0x3);		dispc_reg_out(VENC_OSDCLK1,0xf);		
		
		/*設置VIDCTL寄存器*/
		dispc_reg_out(VENC_VIDCTL, 0x2000);
		/*設置SYNCCTL寄存器*/
		dispc_reg_out(VENC_SYNCCTL, 0x3);
		
		/*設置LCDOUT寄存器*/
		dispc_reg_out(VENC_LCDOUT, 0x01); //0x1使能LCD_OE的輸出				//dispc_reg_out(VENC_VDPRO, 0x2b70); //shezhi VDPRO		
	}
	else
	{
		dispc_reg_out(VENC_VMOD, 0);
	}

}static inline void fix_default_var(struct dm_win_info *w,			u32 xres, u32 yres, u32 xpos, u32 ypos, int n_buf) //設定fb_var_screeninfo的默認值{	struct fb_var_screeninfo *v = &w->info.var;		v->xres = xres;	v->yres = yres;	v->xres_virtual = v->xres;	v->yres_virtual = v->yres * n_buf;	x_pos(w) = xpos;	y_pos(w) = ypos;}			    static void dm64xxfb_cleanup(void);    /*     *  Initialization     */int __init dm64xxfb_init(void)   //初始化 fb{
int i;
	printk(" \n--->5\n--->\n---->\n------>\nNow Enter davinci dm64xxfb_init()!\n");
		struct fb_info *info;	DBGENTER;	if (dmparams.windows == 0)		return 0;	/* user disabled all windows through bootargs */			dm.mmio_base_phys = OSD_REG_BASE;
	dm.mmio_size = OSD_REG_SIZE;		/* request the mem regions */#ifdef REVISIT		if (!request_mem_region(dm.mmio_base_phys, dm.mmio_size, DRIVER)) {		printk(KERN_ERR DRIVER ": cannot reserve MMIO region\n");		RETURN(-ENODEV);	}	/* map the regions */	dm.mmio_base =		(unsigned long) ioremap(dm.mmio_base_phys, dm.mmio_size);	if (!dm.mmio_base) {		printk(KERN_ERR DRIVER ": cannot map MMIO\n");		goto release_mmio;	}#endif 	/* initialize the vsync wait queue */	init_waitqueue_head(&dm.vsync_wait);	dm.timeout = HZ/5;   
		if ((dmparams.output == NTSC) && (dmparams.format == COMPOSITE))		dm.output_device_config = dm64xxfb_ntsc_composite_config;	else if ((dmparams.output == NTSC) && (dmparams.format == SVIDEO))		dm.output_device_config = dm64xxfb_ntsc_svideo_config;  	else if ((dmparams.output == NTSC) && (dmparams.format == COMPONENT))		dm.output_device_config = dm64xxfb_ntsc_component_config;	else if ((dmparams.output == PAL) && (dmparams.format == COMPOSITE))		dm.output_device_config = dm64xxfb_pal_composite_config;	else if ((dmparams.output == PAL) && (dmparams.format == SVIDEO))		dm.output_device_config = dm64xxfb_pal_svideo_config;	else if ((dmparams.output == PAL) && (dmparams.format == COMPONENT))		dm.output_device_config = dm64xxfb_pal_component_config;	else if(dmparams.output == LCDS)
	{
		dm.output_device_config = dm64xxfb_lcd_config;
		printk("Now Enter LCD display mode!\n");      
	}
	else {		printk(KERN_WARNING "Unsupported output device!\n");//在這里添加初始化LCD輸出的代碼，照著上面的例子寫		dm.output_device_config = NULL;	}
		printk("Setting Up Clocks for DM420 OSD\n");	/* Initialize the VPSS Clock Control register */	dispc_reg_out(VPSS_CLKCTL, 0x19);   //*****0x18  ,0x19 clk frequence is54M Hz //設置VPSS的時鐘控制，若設為0x18則開放DAC的時鐘	dispc_reg_merge(PLLCTL,0xff,0);  
dispc_reg_out(PLLDIV1,0x0000);	dispc_reg_out(PLLDIV1,0x8002);dispc_reg_merge(PLLCTL,0x00,0);  //這幾句是先關閉PLL2，然后設置PLLDIV1為2，然后打開PLL2，打開和關閉的語法有問題，可是結果是正確的，可能有其他的地方修改了此關閉與啟動...
printk("(((((((((((EER=%x\n",dispc_reg_in(EER));printk("(((((((((((EERH=%x\n",dispc_reg_in(EERH));printk("(((((((((((EECR=%x\n",dispc_reg_in(EECR));printk("(((((((((((EECRH=%x\n",dispc_reg_in(EECRH));printk("(((((((((((EESR=%x\n",dispc_reg_in(EESR));printk("(((((((((((EESRH=%x\n",dispc_reg_in(EESRH));/*printk("&&&&&&&&SDRCR=%x\n",dispc_reg_in(DDR_SDRCR));printk("&&&&&&&&SDBCR=%x\n",dispc_reg_in(DDR_SDBCR));printk("&&&&&&&&SDRSTAT=%x\n",dispc_reg_in(DDR_SDRSTAT));printk("&&&&&&&&DDRPHYCR=%x\n",dispc_reg_in(DDR_DDRPHYCR));asm(mov PLLCTL,0);/*for(i=0;i<100000;i++)if(i%10000==0)printk("++++++++++\n");dispc_reg_merge(DDR_SDRCR,0xffffffff,1<<31);dispc_reg_merge(DDR_SDRCR,0xffffffff,1<<30);dispc_reg_merge(DDR_SDRSTAT,0,1<<2);dispc_reg_merge(DDR_DDRPHYCR,0xff,1<<4);dispc_reg_merge(PLLCTL,0xff,0);dispc_reg_out(PLLM,0x0000);dispc_reg_out(PLLM,0x800b);dispc_reg_out(PLLDIV1,0x0000);dispc_reg_out(PLLDIV1,0x8005);dispc_reg_out(PLLDIV2,0x0000);dispc_reg_out(PLLDIV2,0x8000);dispc_reg_merge(PLLCTL,0xff,1<<4);for(i=0;i<2000;i++);dispc_reg_merge(PLLCTL,0x00,0);dispc_reg_merge(DDR_DDRPHYCR,0x00,1<<4);dispc_reg_merge(DDR_DDRPHYCR,0xff,1<<5);dispc_reg_merge(DDR_SDRSTAT,0xff,1<<2);for(i=0;i<1000;i++);dispc_reg_merge(DDR_SDBCR,0xffff,1<<15);dispc_reg_merge(DDR_SDRCR,0x00000000,1<<30);dispc_reg_merge(DDR_SDRCR,0x00000000,1<<31);for(i=0;i<1000;i++);*/	/* Set Base Pixel X and Base Pixel Y */	dispc_reg_out(OSD_BASEPX, BASEX);				//設置了圖像參考的點	dispc_reg_out(OSD_BASEPY, BASEY);	/* Reset OSD registers to default. */	dispc_reg_out(OSD_MODE, 0);	dispc_reg_out(OSD_OSDWIN0MD, 0);//REVISIT:  should we reset the other window modes too?		/* Set blue background color */	set_bg_color(0, 162);        /* Field Inversion Workaround */        dispc_reg_out(OSD_MODE, 0x200);			//翻轉場信號//	printk("-------------- VID0 -----------------\n");	if (!dmparams.windows & (1 << VID0)) {
		printk(KERN_WARNING "No video/osd windows will be enabled "
				    "because Video0 is disabled\n");
		return 0;	/* background will still be shown */		    
	}
	/* Setup VID0 framebuffer */	
	if (!mem_alloc(&dm.vid0, VID0_FB_PHY, VID0_FB_SIZE, VID0_FBNAME)) {
		dm.vid0->dm = &dm;
		fix_default_var(dm.vid0, 
				dmparams.vid0_xres, dmparams.vid0_yres,
				dmparams.vid0_xpos, dmparams.vid0_ypos,
				TRIPLE_BUF);
		info = init_fb_info(dm.vid0, &vid0_default_var, VID0_FBNAME);
		if (dm64xxfb_check_var(&info->var, info)) {
			printk(KERN_ERR VID0_FBNAME 
				": invalid default video mode\n");
			goto exit;
		}
		memset((void *)dm.vid0->fb_base, 0xb4, dm.vid0->fb_size);
	} else 
		goto exit;		//	printk("-------------- OSD0 -----------------\n");	/* Setup OSD0 framebuffer */	if ((dmparams.windows & (1 << OSD0)) &&	    (!mem_alloc(&dm.osd0, OSD0_FB_PHY, OSD0_FB_SIZE, OSD0_FBNAME))) {               printk("-------------- OSD0 -----------------\n");		dm.osd0->dm = &dm;		fix_default_var(dm.osd0,				dmparams.osd0_xres, dmparams.osd0_yres,				dmparams.osd0_xpos, dmparams.osd0_ypos,				DOUBLE_BUF);		info = init_fb_info(dm.osd0, &osd0_default_var, OSD0_FBNAME); 		if (dm64xxfb_check_var(&info->var, info)) {			printk(KERN_ERR OSD0_FBNAME 				": invalid default video mode\n");			mem_release(dm.osd0);		}		else 			memset((void *)dm.osd0->fb_base, 0, dm.osd0->fb_size);	}		//	printk("-------------- OSD1 -----------------\n");	/* Setup OSD1 framebuffer */	if ((dmparams.windows & (1 << OSD1)) &&	    (!mem_alloc(&dm.osd1, OSD1_FB_PHY, OSD1_FB_SIZE, OSD1_FBNAME))) {		dm.osd1->dm = &dm;		fix_default_var(dm.osd1,				dmparams.osd1_xres, dmparams.osd1_yres,				dmparams.osd1_xpos, dmparams.osd1_ypos,				DOUBLE_BUF);		info = init_fb_info(dm.osd1, &osd1_default_var, OSD1_FBNAME);		if (dm64xxfb_check_var(&info->var, info)) {			printk(KERN_ERR OSD1_FBNAME 				": invalid default video mode\n");			mem_release(dm.osd1);		}		else			/* Set blend factor to show OSD windows */			memset((void *)dm.osd1->fb_base, 0xff,dm.osd1->fb_size);	}//	printk("-------------- VID1 -----------------\n");       //setup VID1的FB，并根據dmparams中的值初始化此fb的var	/* Setup VID1 framebuffer */	if ((dmparams.windows & (1 << VID1)) &&	    (!mem_alloc(&dm.vid1, VID1_FB_PHY, VID1_FB_SIZE, VID1_FBNAME))) {		dm.vid1->dm = &dm;		fix_default_var(dm.vid1,				dmparams.vid1_xres, dmparams.vid1_yres,				dmparams.vid1_xpos, dmparams.vid1_ypos,				TRIPLE_BUF);		info = init_fb_info(dm.vid1, &vid1_default_var, VID1_FBNAME);		if (dm64xxfb_check_var(&info->var, info)) {			printk(KERN_ERR VID1_FBNAME 				": invalid default video mode\n");			mem_release(dm.vid1);		}		else			memset((void *)dm.vid1->fb_base, 0x88,dm.vid1->fb_size);	}printk("222222(((((((((((EER=%x\n",dispc_reg_in(EER));printk("(((((((((((EERH=%x\n",dispc_reg_in(EERH));printk("(((((((((((EECR=%x\n",dispc_reg_in(EECR));printk("(((((((((((EECRH=%x\n",dispc_reg_in(EECRH));printk("(((((((((((EESR=%x\n",dispc_reg_in(EESR));printk("(((((((((((EESRH=%x\n",dispc_reg_in(EESRH));	/* Register OSD0 framebuffer */	if (dm.osd0) {		info = &dm.osd0->info;		if (register_framebuffer(info) < 0) {			printk(KERN_ERR OSD0_FBNAME 				"Unable to register OSD0 framebuffer\n");			mem_release(dm.osd0);		} else {			printk(KERN_INFO "fb%d: %s frame buffer device\n", 				info->node, info->fix.id);			dm64xxfb_set_par(info);		}	}		/* Register VID0 framebuffer */	info = &dm.vid0->info;	if (register_framebuffer(info) < 0) {		printk(KERN_ERR VID0_FBNAME 			"Unable to register VID0 framebuffer\n");		goto exit;		} else {		printk(KERN_INFO "fb%d: %s frame buffer device\n", 			info->node, info->fix.id);		dm64xxfb_set_par(info);	}		/* Register OSD1 framebuffer */	if (dm.osd1) {		info = &dm.osd1->info;		if (register_framebuffer(info) < 0) {			printk(KERN_ERR OSD1_FBNAME 				"Unable to register OSD1 framebuffer\n");			mem_release(dm.osd1);		} else {			printk(KERN_INFO "fb%d: %s frame buffer device\n", 				info->node, info->fix.id);			dm64xxfb_set_par(info);		}	}			/* Register VID1 framebuffer */	if (dm.vid1) {		info = &dm.vid1->info;		if (register_framebuffer(info) < 0) {			mem_release(dm.vid1);			printk(KERN_ERR VID1_FBNAME 				"Unable to register VID1 framebuffer\n");			mem_release(dm.vid1);		} else {			printk(KERN_INFO "fb%d: %s frame buffer device\n", 				info->node, info->fix.id);			dm64xxfb_set_par(info);		}	}	        /* install our interrupt service routine */	if (request_irq(IRQ_VENCINT, dm64xxfb_isr, SA_SHIRQ, DRIVER, &dm))	{		printk(KERN_ERR DRIVER			": could not install interrupt service routine\n");		goto exit;	}	/* Turn ON the output device */	dm.output_device_config(1);printk("33333(((((((EER=%x\n",dispc_reg_in(EER));printk("(((((((((((EERH=%x\n",dispc_reg_in(EERH));printk("(((((((((((EECR=%x\n",dispc_reg_in(EECR));printk("(((((((((((EECRH=%x\n",dispc_reg_in(EECRH));printk("(((((((((((EESR=%x\n",dispc_reg_in(EESR));printk("(((((((((((EESRH=%x\n",dispc_reg_in(EESRH));	RETURN(0);exit:		dm64xxfb_cleanup();	RETURN(-ENODEV);	unmap_mmio:	iounmap((void*)dm.mmio_base);release_mmio:	release_mem_region(dm.mmio_base_phys, dm.mmio_size);	RETURN(-ENODEV);}    /*     *  Cleanup     */static void dm64xxfb_cleanup(void){	DBGENTER;		free_irq(IRQ_VENCINT, &dm);		/* Cleanup all framebuffers */	if (dm.osd0) {		unregister_framebuffer(&dm.osd0->info);		mem_release(dm.osd0);	}	if (dm.osd1) {		unregister_framebuffer(&dm.osd1->info);		mem_release(dm.osd1);	}	if (dm.vid0) {		unregister_framebuffer(&dm.vid0->info);		mem_release(dm.vid0);	}	if (dm.vid1) {		unregister_framebuffer(&dm.vid1->info);		mem_release(dm.vid1);	}	/* Turn OFF the output device */	dm.output_device_config(0);#ifdef REVISIT		if(dm.mmio_base)		iounmap((void*)dm.mmio_base);	release_mem_region(dm.mmio_base_phys, dm.mmio_size);#endif	DBGEXIT;}/* ------------------------------------------------------------------------- */    /*     *  Frame buffer operations     */static struct fb_ops dm64xxfb_ops = {	.owner		= THIS_MODULE,	.fb_check_var	= dm64xxfb_check_var,	.fb_set_par	= dm64xxfb_set_par,	.fb_setcolreg	= dm64xxfb_setcolreg,	.fb_blank	= dm64xxfb_blank,	.fb_parect	= cfb_fillrect,	.fb_con_display	= dm64xxfb_pan_display,
	.fb_fillpyarea	= cfb_copyarea,	.fb_imageblit	= cfb_imageblit,	.fb_cursor	= soft_cursor,	.fb_rotate	= NULL,	.fb_sync	= NULL,	.fb_ioctl	= dm64xxfb_ioctl,};/* ------------------------------------------------------------------------- */    /*     *  Modularization     */module_init(dm64xxfb_init);//入口module_exit(dm64xxfb_cleanup);//在module.h中定義的幾個宏
MODULE_DESCRIPTION("Framebuffer driver for TI DM644x DV-EVM Board");MODULE_AUTHOR("Texas Instruments");MODULE_LICENSE("GPL");