saa7113_prp.c

SAA7113的初始化程序

	
	return 0;

}

int pwdn_saa7113(int flag)
{	
	

	
	if(flag)
		_reg_GPIO_DR(GPIOF) |= 0x00200000;
	else
		_reg_GPIO_DR(GPIOF) &= ~(0x00200000);
		
	
	return 0;
}

static void saa7113h_hard_reset(void)
{
	unsigned short i;

	pwdn_saa7113(0);
	for(i=0;i<1000;i++)
		delay10us();
	
	 pwdn_saa7113(1);
	 for(i=0;i<1000;i++)
		delay10us();

	return;
}



/**
* Test on I2C channel
* Read / write one of the register
* compare and verify if the data is correct
*/
static int saa7113h_i2c_test(void)
{
	unsigned char chip_ver;	//silicon ID
	unsigned char rdata, wdata;
	unsigned int error = 0;

	printk("I2C Test...\n");

	saa7113h_hard_reset();

	//read silicon ID
	sccb_read(0x00, &chip_ver);
	printk("Chip version = 0x%02X\n", chip_ver);

	for(wdata = 0x1; wdata < 0x3F; wdata ++)
	{
		//register read write test
		sccb_write(0x0D, wdata);	//test on reg 0x0D
		sccb_read(0x0D, &rdata);

		if(rdata != wdata)
			error = 1;
	}

	if(error)
		printk("saa7113h: i2c test failed\n");
	else
		printk("saa7113h: i2c test ok\n");
	
	saa7113h_hard_reset();

	return error;
}


/**
*	SAA7113 Basic Init
*	Composite/S-Video Input
*
*	- Accept composite or s-video video from input A11
*	- Automatic field detection, PAL or NTSC expected
*	- Standard CCIR656 output enable
*	- VBI-data slicer disable
*	- VSYNC & HSYNC out enable
*	- ITU recommended contrast, brightness & saturation control
*	- Chrominance processin with nominal BW (800kHz)
*
*	@param	type	SAA7113H_INPUT_COMPOSITE	Accept composite video
*			SAA7113H_INPUT_SVIDEO		Accept s-video video
*/
static int saa7113h_init(void)
{
//	unsigned int chipVer;
	unsigned char status;
	unsigned int reg,i;

//hard reset
	saa7113h_hard_reset();


//recommended startup settings
	sccb_write_check(0x01, 0x08);	//increment delay
	sccb_write_check(0x02, 0xC0);	//analog input control 1
	
		
	sccb_write_check(0x03, 0x33);	//analog input control 2
	sccb_write_check(0x04, 0x00);	//analog input control 3
	sccb_write_check(0x05, 0x00);	//analog input control 4
	sccb_write_check(0x06, 0xE9);	//HSYNC start
	sccb_write_check(0x07, 0x0D);	//HSYNC stop
	sccb_write_check(0x08, 0x98);	//SYNC control
	sccb_write_check(0x09, 0x01);	//luminance control

	sccb_write_check(0x0A, 0x80);	//luminance brightness
	sccb_write_check(0x0B, 0x47);	//luminance contrast
	sccb_write_check(0x0C, 0x40);	//chrom sat
	
	
	sccb_write_check(0x0D, 0x00);	//chrom hue
	sccb_write_check(0x0E, 0x01);	//chrom control
	
	//sccb_write_check(0x0F, 0x2A);	//chrom gain control
	sccb_write(0x0F, 0x2A);	//format / delay control
	sccb_write_check(0x10, 0x00);	//format / delay control
	sccb_write_check(0x11, 0x0C);	//output control 1
//	sccb_write_check(0x11, 0x0D);	//output control 1 (color kill disable)
	sccb_write_check(0x12, 0x7B);	//output control 2
	sccb_write_check(0x13, 0x00);	//output control 3
	
	sccb_write_check(0x15, 0x00);	//VGATE start
	sccb_write_check(0x16, 0x00);	//VGATE stop
	sccb_write_check(0x17, 0x00);	//MSBs for VGATE control

	sccb_write_check(0x40, 0x02);	//silcer control 1
	for(reg = 0x41; reg <= 0x57; reg ++)
		sccb_write_check(reg, 0xFF);	//line control register 2 to 24
	
	
	sccb_write_check(0x58, 0x00);	//framing code
	sccb_write_check(0x59, 0x54);	//horizontal offset for slicer
	sccb_write_check(0x5A, 0x07);	//vertical offset for slicer
	sccb_write_check(0x5B, 0x83);	//field offset and SBs for H & V offset
	sccb_write_check(0x5E, 0x00);	//silced data ID code

	 for(i=0;i<100;i++)
		delay10us();


//read out status
	sccb_read(0x1F, &status);

	if(status & 0x20)
	{
		printk("NTSC\n");	
		return 60;	//60Hz => NTSC
	}
	else{
		printk("PAL\n");	
		return 50;	//50Hz => PAL
	}
}


	
SINT32 init_control_signal(void)
{



	/* PWDN: PF21(~CS4), RESET:PF22(~CS5) */
	/* Set GPIO functionality */
	_reg_GPIO_GIUS(GPIOF) |= 0x00600000;	         
	
	/* Set output configure register */
	_reg_GPIO_OCR2(GPIOF) |= 0x00003C00;	         
	
	/* Set direction configure register,output */
	_reg_GPIO_DDIR(GPIOF) |= 0x00600000;	


	return 0;
}



static int csi_prp_open(struct inode *inode, struct file *filp)
{
	MOD_INC_USE_COUNT;
	return 0;
}


static int csi_prp_release(struct inode *inode, struct file *filp)
{
	MOD_DEC_USE_COUNT;

	return 0;
}

static ssize_t csi_prp_read(struct file *filp, char *buf, size_t size, loff_t *l)
{


	//printk("cntl = 0x%x\n",_reg_EMMA_PRP_CNTL);
	//printk("cntl = 0x%x\n",(*((volatile unsigned long *)(MX2_IO_ADDRESS(EMMA_PRP_BASE+0x80)))));

	if(_reg_EMMA_PRP_CNTL & 0x20000000)
		return -1;

	copy_to_user(buf, pDstYAddr, Y_BUFFER_SIZE);
	copy_to_user(buf+Y_BUFFER_SIZE, pDstUAddr, Y_BUFFER_SIZE/4);
	copy_to_user(buf+Y_BUFFER_SIZE+Y_BUFFER_SIZE/4, pDstVAddr, Y_BUFFER_SIZE/4);

	_reg_EMMA_PRP_CNTL |= 0x60000000;


	return size;
}

static ssize_t csi_prp_write(struct file *filp, const char *buf, size_t size, loff_t *l)
{
	return 0;
}

static int csi_prp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
	return 0;
}


SINT32 csi_init()
{
	//disable_sof_interrupt();
	_reg_CRM_PCDR1 &= 0xc0ffffff;
	_reg_CRM_PCDR1 |= 0x02000000;         //PerClk4 = MPLL/3
	_reg_CRM_PCCR0 |= 0x80000000;
	_reg_CRM_PCCR0 |= 0x00400000;


	_reg_GPIO_GIUS(GPIOB) &= ~0x3FFC00;       //disable GPIO
	_reg_GPIO_GPR(GPIOB) &= ~0x3FFC00;

	_reg_CSI_CSICR1=0; 			//module reset
	_reg_CSI_CSICR1 |= 0x2;	          //latch on rising edge
	_reg_CSI_CSICR1 |= 0x10;	//gated clock mode
	_reg_CSI_CSICR1 |= 0x800;	//hsync active mode
	_reg_CSI_CSICR1 |= 0x100;	//sync FIFO clear
	_reg_CSI_CSICR1 |= 0x1200;	//MCLK = PerCLK4/4
	_reg_CSI_CSICR1 |= 0x40000000;	//SOF rising edge
	_reg_CSI_CSICR1 |= 0x20000;	//SOF rising edge
	_reg_CSI_CSICR1 |= 0x10000000;  //Enable csi-prp;

	_reg_CSI_CSICR1 |= 0x80000;  //RXFF level =8;

	_reg_CSI_CSICR1 |= 0x10000;	//SOF INT
	_reg_CSI_CSICR1 |= 0x08000000;  //Interlace
	_reg_CSI_CSICR1 |= 0x400;  //CCIR mode

	_reg_CSI_CSICR1 |= 0x80;  //Big indian mode
	_reg_CSI_CSICR1 |= (1 << 31);  //Swap 16bits mode
	
	return 0;
}


static void prp_intr_handler()
{

	//_reg_EMMA_PRP_CNTL &= ~0x60000000;
	//wake_up_interruptible(&gDctWaitQueue);

	return;
}

int malloc_buffer()
{
	pDstYAddr = NULL;
	pDstUAddr = NULL;
	pDstVAddr = NULL;

	/* Alloc memory for inout and output buffer */
	pDstYAddr = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE+1024,&phyDestYAddr);
	pDstUAddr = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE/4+1024,&phyDestUAddr);
	pDstVAddr = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE/4+1024,&phyDestVAddr);
	
	pDstYAddr2 = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE+1024,&phyDestYAddr2);
	pDstUAddr2 = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE/4+1024,&phyDestUAddr2);
	pDstVAddr2 = consistent_alloc(GFP_KERNEL|GFP_DMA,Y_BUFFER_SIZE/4+1024,&phyDestVAddr2);
	return 0;
}

static int mx21_prp_init()
{
	int i;
	_reg_CRM_PCCR0 |= 0x08008000;
/*	
	_reg_EMMA_PRP_CNTL = 0;
	_reg_EMMA_PRP_CNTL |= (1<<2);  //csi en
	_reg_EMMA_PRP_CNTL |= (1<<11);  //frame skip:stop
	_reg_EMMA_PRP_CNTL |= (1<<15);  //Disable cascade of Channel-1 resize
	_reg_EMMA_PRP_CNTL |= 0x08000000;  //resize fifo level 48 words
	_reg_EMMA_PRP_CNTL |= (1<<10);
	_reg_EMMA_PRP_CNTL |= (1<<14);
	_reg_EMMA_PRP_CNTL |= 0xe0000000;
	_reg_EMMA_PRP_CNTL |= 0x8;
	_reg_EMMA_PRP_SPIX_FMT = 0x01180888;
	_reg_EMMA_PRP_CNTL |= 0x0;
*/
	
	//reset the PRP module 
	_reg_EMMA_PRP_CNTL |= 0x1000;
	for(i=0;i<2000;i++);

	_reg_EMMA_PRP_CNTL = 0xE800CE2C;
	//_reg_EMMA_PRP_CNTL |= (1 << 14);      //Enable window control

	_reg_EMMA_PRP_DY_PTR = phyDestYAddr;
	_reg_EMMA_PRP_DCB_PTR = phyDestUAddr;
	_reg_EMMA_PRP_DCR_PTR = phyDestVAddr;

	_reg_EMMA_PRP_SY_PTR = phyDestYAddr2;
	_reg_EMMA_PRP_SCB_PTR = phyDestUAddr2;
	_reg_EMMA_PRP_SCR_PTR = phyDestVAddr2;


	_reg_EMMA_PRP_SFRM_SIZE = IN_Y_WIDTH_SIZE;
	_reg_EMMA_PRP_SFRM_SIZE = (_reg_EMMA_PRP_SFRM_SIZE << 16 | IN_Y_HIGHT_SIZE);

	_reg_EMMA_PRP_SPIX_FMT = 0x01180888;
	
	_reg_EMMA_PRP_DISIZE_CH2 = OUT_Y_WIDTH_SIZE;
	_reg_EMMA_PRP_DISIZE_CH2 = (_reg_EMMA_PRP_DISIZE_CH2 << 16 | OUT_Y_HIGHT_SIZE);

	//_reg_EMMA_PRP_SOURCE_LINE_STRIDE = 8;  //Skip 8 pixels
	_reg_EMMA_PRP_SLIN_STRID = 8;
	
	//_reg_EMMA_PRP_RSIZE_CTRL = 0x40;
	//_reg_EMMA_PRP_INTRCTRL = 0x20;       //Enable interupt
	
	if(mode) //320x240 
	{
		/* Horizatle 11:5 */
		_reg_EMMA_PrP_CH2_RZ_HORI_COEF1	= 0x37244924;
		_reg_EMMA_PrP_CH2_RZ_HORI_COEF2 = 0x00000002;
		_reg_EMMA_PrP_CH2_RZ_HORI_VALID = 0x0b0004aa;
			
		/* Verticle 6:5 */
		_reg_EMMA_PrP_CH2_RZ_VERT_COEF1	= 0x00001536;
		_reg_EMMA_PrP_CH2_RZ_VERT_COEF2 = 0x00000000;
		_reg_EMMA_PrP_CH2_RZ_VERT_VALID = 0x8600001f;
	}
	else  //352x288
	{
		/* Horizatle 2:1 */
		_reg_EMMA_PrP_CH2_RZ_HORI_COEF1	= 0x00000024;
		_reg_EMMA_PrP_CH2_RZ_HORI_COEF2 = 0x00000000;
		_reg_EMMA_PrP_CH2_RZ_HORI_VALID = 0x02000002;
			
		/* Verticle 1:1 */
	//	_reg_EMMA_PrP_CH2_RZ_VERT_COEF1	= 0x00000008;
	//	_reg_EMMA_PrP_CH2_RZ_VERT_COEF2 = 0x00000000;
	//	_reg_EMMA_PrP_CH2_RZ_VERT_VALID = 0x01000001;
	}
	
	_reg_EMMA_PRP_CNTL |= 0x2;  //Enable PRP ch2


 	return 0;
}

static devfs_handle_t devfs_handle;

MODULE_PARM(mode, "i");


int init_module()
{
	int result,i;


	switch(mode)
	{
		case 0:
			IN_Y_WIDTH_SIZE = 704;
			IN_Y_HIGHT_SIZE = 288;
			
			OUT_Y_WIDTH_SIZE = 352;
			OUT_Y_HIGHT_SIZE = 288;
			
			Y_BUFFER_SIZE = OUT_Y_WIDTH_SIZE*OUT_Y_HIGHT_SIZE;
			
			break;
		case 1:
			IN_Y_WIDTH_SIZE = 704;
			IN_Y_HIGHT_SIZE = 288;
			
			OUT_Y_WIDTH_SIZE = 320;
			OUT_Y_HIGHT_SIZE = 240;
			
			Y_BUFFER_SIZE = OUT_Y_WIDTH_SIZE*OUT_Y_HIGHT_SIZE;
			
			break;
	
		default:
			printk("unsupported image size!\n");
			break;
	}


	/* register our character device */

 	result = devfs_register_chrdev(0, "saa7113_prp", &csi_prp_fops);
 	if ( result < 0 )
 	{
		printk("csi_prp driver: Unable to register driver\n");
		return -ENODEV;
	}
	devfs_handle = devfs_register(NULL, "saa7113_prp", DEVFS_FL_DEFAULT,
				      result, 0,
				      S_IFCHR | S_IRUSR | S_IWUSR,
				      &csi_prp_fops, NULL);

        printk("make node for csi_prp with 'mknod csi_prp c %d 0'\n", result);
	gMajor = result;

	//if (request_irq(EMMA_PRP_IRQ, prp_intr_handler, SA_INTERRUPT, "PRP", NULL))
	//	printk("*** Cannot register interrupt handler for PRP ! ***\n");
	//else
	//	printk("PRP interrupt handler registered\n");

	init_control_signal();
	sccb_init();

	csi_init();

	saa7113h_i2c_test();
	
	saa7113h_init();
	delay10us();


	malloc_buffer();
	mx21_prp_init();

	return 0;
}

void cleanup_module()
{
	if (gMajor > 0){
		devfs_unregister_chrdev(gMajor, "csi_prp");
		devfs_unregister(devfs_handle);
		}

	//free_irq(EMMA_PRP_IRQ, 0);

	free_buffer();
	printk("Say goodbye to csi_prp\n");
}

void free_buffer()
{

	/* Free memory for inout and output buffer */
	consistent_free(pDstYAddr,Y_BUFFER_SIZE+1024,phyDestYAddr);
	consistent_free(pDstUAddr,Y_BUFFER_SIZE/4+1024,phyDestUAddr);
	consistent_free(pDstVAddr,Y_BUFFER_SIZE/4+1024,phyDestVAddr);
	
	consistent_free(pDstYAddr2,Y_BUFFER_SIZE+1024,phyDestYAddr2);
	consistent_free(pDstUAddr2,Y_BUFFER_SIZE/4+1024,phyDestUAddr2);
	consistent_free(pDstVAddr2,Y_BUFFER_SIZE/4+1024,phyDestVAddr2);
	
	return;
}