amt630hv160-sdk-release/amt630hv160-freertos-beta/ArkmicroFiles/libcpu-amt630hv160/source/csi.c

#include "FreeRTOS.h"
#include "board.h"
#include "chip.h"


#if VIDEO_IN_FORMAT == VIN_AHD_720P_25   
	#define   HSA   	0x2e
	#define   HBP   	0x25
	#define   HSD   	0x02
	#define   HLINE   	0x555
	#define   VSA   	0x06
	#define   VBP   	0x09
	#define   VFP   	0x06
	#define   VACT   	0x2d0
	
	#define	  LUN_NUM	4
	#define   CLK_DIV    0x11 //500/17=29M
#endif

#if VIDEO_IN_FORMAT == VIN_AHD_1080P_25   
	#define   HSA   	0x2c
	#define   HBP   	0x94
	#define   HSD   	0x02
	#define   HLINE   	0xA50
	#define   VSA   	0x05
	#define   VBP   	0x24
	#define   VFP   	0x04
	#define   VACT   	0x438

	#define	  LUN_NUM	4
	#define   CLK_DIV    0x6 //500/6=83.3.4M

#endif

#if VIDEO_IN_FORMAT == VIN_CVBS_NTSC   
	#define   HSA   	0x2e
	#define   HBP   	0x25
	#define   HSD   	0x02
	#define   HLINE   	0x350
	#define   VSA   	0x06
	#define   VBP   	0x09
	#define   VFP   	0x06
	#define   VACT   	0xf0

	#define	  LUN_NUM	2
	#define   CLK_DIV    0x20 //500/32=15.6M


#endif

static void ApbWriteFun(unsigned int addr, unsigned int data)
{
	* (volatile unsigned int *) addr = data;
}
static unsigned int ApbReadFun(unsigned int addr)
{
	return (* (volatile unsigned int *) addr);
}


unsigned char csi_read_reg(unsigned int addr)
{
	unsigned int rdata;
	unsigned int val;

	//read phy
	val = 0x10000 | addr;
	ApbWriteFun(0x51b00054, val);
	ApbWriteFun(0x51b00050, 0x2);
	ApbWriteFun(0x51b00050, 0x0);

	rdata = ApbReadFun(0x51b00054);
	rdata = (rdata >> 8)&0xFF;  
	return rdata; 
}

void csi_write_reg(unsigned int addr,unsigned int regval)
{
	unsigned int val = 0;
	ApbWriteFun(0x51b00054, addr);    
	val = 0x10000 | addr;    
	ApbWriteFun(0x51b00054, val);
	ApbWriteFun(0x51b00050, 0x2);
	ApbWriteFun(0x51b00050, 0x0);

	ApbWriteFun(0x51b00054, regval);
	ApbWriteFun(0x51b00050, 0x2);
	ApbWriteFun(0x51b00050, 0x0);
}

void csi_init(void)
{
//reset csi
   unsigned int regval = 0;
   regval = ApbReadFun(0x50000188);
   regval &=~(3<<5 | 1<<1 );	
   ApbWriteFun(0x50000188,regval);
   udelay(20);
   regval |=(3<<5 | 1<<1);
   ApbWriteFun(0x50000188,regval);
   udelay(20);  

  ApbWriteFun(0x500000a0,0x0000101c); //CSI_MIPI_EN = 0 
// gpu clk 500M 
   ApbWriteFun(0x50000198,(CLK_DIV-1)); 


//==================== host phy cfg=========================//
    ApbWriteFun(0x51b00040,0x00000000); //power down phy
    ApbWriteFun(0x51b00044,0x00000000); //reset phy
    ApbWriteFun(0x51b00040,0x00000001); //power down phy
    ApbWriteFun(0x51b00044,0x00000001); //reset phy 
	
//csi phy reset delay 5ms
    vTaskDelay(pdMS_TO_TICKS(5));  

	regval = 0xff; 
	csi_write_reg(0x34,regval); 
	csi_write_reg(0x34,0x01); 
	csi_write_reg(0x44,regval); 
	csi_write_reg(0x44,0x11); //600M 
	csi_write_reg(0x54,regval); 
	csi_write_reg(0x54,0x01);
	csi_write_reg(0x84,regval); 
	csi_write_reg(0x84,0x01);
	csi_write_reg(0x94,regval); 
  
 
//================mipi host=================//
	if(LUN_NUM == 4)
		ApbWriteFun(0x51b00004,0x00000003); //4 CHANAEL
	else if(LUN_NUM == 2)
		ApbWriteFun(0x51b00004,0x00000001); //2 CHANAEL

	ApbWriteFun(0x51b00080,0x00000000); //ipi mode: 0: camera timing; 1: controller timing
	ApbWriteFun(0x51b00088,0x0000001e); //data type
  
//config csi timing   
	ApbWriteFun(0x51b00090,HSA); //hsa
	ApbWriteFun(0x51b00094,HBP); //hbp
	ApbWriteFun(0x51b00098,HSD); //hsd
	ApbWriteFun(0x51b0009c,HLINE); //hline 
	ApbWriteFun(0x51b000b0,VSA); //vsa
	ApbWriteFun(0x51b000b4,VBP); //vbp
	ApbWriteFun(0x51b000b8,VFP); //vfp
	ApbWriteFun(0x51b000bc,VACT); //vact  

  
  ApbWriteFun(0x51b00008,0x00000001); //csi2_resetn active low
  

//================mipi recover=================//
  ApbWriteFun(0x50000190,0x00000002); //mipi_ctl_reg[15:0] -> {bist_mode, hsync_mode, de_inv, hsync_inv, vsync_inv, data_type[1:0]}
 
  ApbWriteFun(0x5000019c,HLINE); //csi_cfg1_reg[14:0] -> {csi_total_pix}



  regval = (VACT + VSA + VBP)<<16 | VACT; 
  ApbWriteFun(0x500001a0,regval); //csi_cfg2_reg -> {de_last_line[30:16], csi_act_line[14:0]}

  
  ApbWriteFun(0x500001a4,0x02e00010); //csi_cfg3_reg -> {de_h_fall[30:16],de_h_rise[14:0]}
  ApbWriteFun(0x500001a8,0x00300002); //csi_cfg4_reg -> {hsync_h_fall[30:16],hsync_h_rise[14:0]} 

//3.3V
  ApbWriteFun(0x500000a0,0x0000101d); //CSI_MIPI_EN = 1
   
   vTaskDelay(pdMS_TO_TICKS(500));
   printf(">>>>>>>>>csi init over!!!!\n");
   
}