prp.c

嵌入式Linux系统下,ov965摄像头驱动.

/********************

	eMMA PRP Driver

********************/
#include "prp.h"
#include "khead.h"

//
//	Module Basic Init
//
void PRP_module_init(void)
{
//HCLK enable for eMMA
	_reg_CRM_PCCR0 |= 0x8008000;	//bit 27 & bit 15
	return;
}

//
//	PRP Module Reset
//
void PRP_reset(void)
{
	_reg_EMMA_PRP_CNTL |= 0x10000;
	return;
}

//
//	PRP Module Enable
//	Unlock PRP, then enable within time limit
//
void PRP_enable(void)
{
	volatile unsigned long lock;

	while(1)
	{
		lock = _reg_EMMA_PRP_LOCK_BIT;	//unlock PRP
		if(!(lock & 0x1))	//wait until idle
			break;
	}
	_reg_EMMA_PRP_CNTL |= 0x1;
	
//verify
	if(!(_reg_EMMA_PRP_CNTL & 0x1))
		printk("PRP can't be unlock\n");
}

//
//	PRP Module Disable
//
void PRP_disable(void)
{
	_reg_EMMA_PRP_CNTL &= ~0x1;
}

unsigned long PRP_poll_ch1_buf1_complete(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x40)	{
		_reg_EMMA_PRP_INTRSTATUS = 0x40;
		return 1;
	} else
		return 0;
}

unsigned long PRP_poll_ch1_buf2_complete(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x20)	{
		_reg_EMMA_PRP_INTRSTATUS = 0x20;
		return 1;
	} else
		return 0;
}

unsigned long PRP_poll_ch1_error(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x2) {
		printk("PRP ch1 write error!\n");
		_reg_EMMA_PRP_INTRSTATUS = 0x2;	//clear by writing '1'
		return 1;
	} else
		return 0;
}

unsigned long PRP_poll_ch2_buf1_complete(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x10)	{
		_reg_EMMA_PRP_INTRSTATUS = 0x10;
		return 1;
	} else
		return 0;
}

unsigned long PRP_poll_ch2_buf2_complete(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x8) {
		_reg_EMMA_PRP_INTRSTATUS = 0x8;
		return 1;
	} else
		return 0;
}

unsigned long PRP_poll_ch2_error(void)
{
	if(_reg_EMMA_PRP_INTRSTATUS & 0x4) {
		printk("PRP ch2 write error!\n");
		_reg_EMMA_PRP_INTRSTATUS = 0x4;
		return 1;
	} else
		return 0;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//	CSI Input  : YUV422
//	CSI Output : QVGA RGB565 (Stride to 320 x 240)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// PRP_init33 : 320*240 --> 320*240
void PRP_init33(unsigned long rgb, unsigned long y, unsigned long u, unsigned long v)
{
	PRP_module_init();
	PRP_reset();

	_reg_EMMA_PRP_CNTL 			= 0x0000222D;	//LOOP mode
	_reg_EMMA_PRP_CNTL 			|= 0x8000000;	//bug fix
	_reg_EMMA_PRP_INTRCTRL 		= 0x00000000;	//disable interrupt
	_reg_EMMA_PRP_SPIX_FMT 		= 0x20100888;	//YUV422 input, UYVY...
	_reg_EMMA_PRP_SFRM_SIZE 	= 0x014000F0;	//source = 320 x 240
	_reg_EMMA_PRP_SLIN_STRID 	= 0x1005984C;
	_reg_EMMA_PRP_RSIZE_CTRL 	= 0x0b671000;
	
	_reg_EMMA_PRP_RZ_HORI_CO1 	= 0x7;
	_reg_EMMA_PRP_RZ_VERT_CO1 	= 0x7;
	_reg_EMMA_PRP_RZ_HORI_VALID = 0x01000001;
	_reg_EMMA_PRP_RZ_VERT_VALID = 0x01000001;
	
	_reg_EMMA_PRP_DRGB1_PTR 	= rgb;			//output buf1
	_reg_EMMA_PRP_DRGB2_PTR 	= rgb;			//output buf2
	_reg_EMMA_PRP_DISIZE_CH1 	= 0x014000F0;	//dest size = 320 x 240
	_reg_EMMA_PRP_DPIX_FMT 		= 0x2CA00565;	//RGB565 output
	_reg_EMMA_PRP_DLST_CH1 		= 0x00000280;	//dest line stride = 640
	
	return;
}

// PRP_init32 : 640*480 --> 320*240
void PRP_init32(unsigned long rgb, unsigned long y, unsigned long u, unsigned long v)
{
	PRP_module_init();
	PRP_reset();

	_reg_EMMA_PRP_CNTL 			= 0x0000222D;	//LOOP mode
	_reg_EMMA_PRP_CNTL 			|= 0x8000000;	//bug fix
	_reg_EMMA_PRP_INTRCTRL 		= 0x00000000;	//disable interrupt
	_reg_EMMA_PRP_SPIX_FMT 		= 0x20100888;	//YUV422 input, UYVY...
	_reg_EMMA_PRP_SFRM_SIZE 	= 0x028001E0;	//source = 640 x 480
	_reg_EMMA_PRP_SLIN_STRID 	= 0x1005984C;
	_reg_EMMA_PRP_RSIZE_CTRL 	= 0x0b671000;
	
	_reg_EMMA_PRP_RZ_HORI_CO1 	= 0x24;
	_reg_EMMA_PRP_RZ_VERT_CO1 	= 0x24;
	_reg_EMMA_PRP_RZ_HORI_VALID = 0x02000002;
	_reg_EMMA_PRP_RZ_VERT_VALID = 0x02000002;
	
	_reg_EMMA_PRP_DRGB1_PTR 	= rgb;			//output buf1
	_reg_EMMA_PRP_DRGB2_PTR 	= rgb;			//output buf2
	_reg_EMMA_PRP_DISIZE_CH1 	= 0x014000F0;	//dest size = 320 x 240
	_reg_EMMA_PRP_DPIX_FMT 		= 0x2CA00565;	//RGB565 output
	_reg_EMMA_PRP_DLST_CH1 		= 0x00000280;	//dest line stride = 640
	
	return;
}

// PRP_init31 : 1280*1024 --> 320*240
void PRP_init31(unsigned long rgb, unsigned long y, unsigned long u, unsigned long v)
{
	PRP_module_init();
	PRP_reset();

	_reg_EMMA_PRP_CNTL 			= 0x0000222D;	//LOOP mode
	_reg_EMMA_PRP_CNTL 			|= 0x8000000;	//bug fix
	_reg_EMMA_PRP_INTRCTRL 		= 0x00000000;	//disable interrupt
	_reg_EMMA_PRP_SPIX_FMT 		= 0x20100888;	//YUV422 input, UYVY...
	_reg_EMMA_PRP_SFRM_SIZE 	= 0x05000400;	//source = 1280 x 1024
	_reg_EMMA_PRP_SLIN_STRID 	= 0x1005984C;
	_reg_EMMA_PRP_RSIZE_CTRL 	= 0x0b671000;
	
	_reg_EMMA_PRP_RZ_HORI_CO1 	= 0x492;
	_reg_EMMA_PRP_RZ_VERT_CO1 	= 0x492;
	_reg_EMMA_PRP_RZ_HORI_VALID = 0x04000008;
	_reg_EMMA_PRP_RZ_VERT_VALID = 0x04000008;

	_reg_EMMA_PRP_DRGB1_PTR 	= rgb;			//output buf1
	_reg_EMMA_PRP_DRGB2_PTR 	= rgb;			//output buf2
	_reg_EMMA_PRP_DISIZE_CH1 	= 0x014000F0;	//dest size = 320 x 240
	_reg_EMMA_PRP_DPIX_FMT 		= 0x2CA00565;	//RGB565 output
	_reg_EMMA_PRP_DLST_CH1 		= 0x00000280;	//dest line stride = 640

	return;
}