mt6189a1_drv.c

SI4702 FM收音机芯片应用在MTK手机上的

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/*******************************************************************************
 *
 * Filename:
 * ---------
 * MT6189A1_drv.c
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *
 *      FM Radio Driver (MT6189A1)
 *
 * Author:
 * -------
 * -------
 *
 *******************************************************************************/
#include "l1audio_def.h"

#if (defined(MT6189A1))

static uint8 cw_cache[66] = {0};


#define USE_I2C
/// #define MT6189_DEBUG
/// #define MT6189_DEBUG_DUMP_LOG
    #define FM_RST_PIN	  34    
    #define FM_CLK_PIN	  26   
    #define FM_SE_PIN	         38   
    #define FM_POWER_PIN  2
    #define FM_SDA_PIN 	48
    #define FM_SCL_PIN 	47

#define FM_RST_PIN_OUPUT_HIGH	  	GPIO_ModeSetup(FM_RST_PIN, 0);\
									GPIO_InitIO(1, FM_RST_PIN);\
   									GPIO_WriteIO(1, FM_RST_PIN);
   									
#define FM_RST_PIN_OUPUT_LOW  	GPIO_ModeSetup(FM_RST_PIN, 0);\
									GPIO_InitIO(1, FM_RST_PIN);\
   									GPIO_WriteIO(0, FM_RST_PIN);

#define FM_SE_PIN_OUPUT_HIGH	  	GPIO_ModeSetup(FM_SE_PIN, 0);\
									GPIO_InitIO(1, FM_SE_PIN);\
   									GPIO_WriteIO(1, FM_SE_PIN);
   									
#define FM_SE_PIN_OUPUT_LOW  		GPIO_ModeSetup(FM_SE_PIN, 0);\
									GPIO_InitIO(1, FM_SE_PIN);\
   									GPIO_WriteIO(0, FM_SE_PIN);

/* MT6189 Control Word */
#define CW(_A,_B)  (const)(uint8)((_A << 1) + _B)

/* General propose constant */
#define MT6189                96    /// Device ID of MT6189 = 96
#define OP_WRITE              0     /// Write to MT6189
#define OP_READ               1     /// Read from MT6189
#define MT6189_WRITE          32		// 0x20
#define MT6189_READ           33		// 0x21
#define SET_FREQ_FAIL         -1
#define LO_INJECTION          0
#define HI_INJECTION          1
#define RSSI_CHECK_FAIL       2
#define FM_TUNER_GRID         100
#define PRESET_IF             140   /// Preset IF: 140 khz
#define IF_MEASURE_COUNT      2     /// 2 * 1,9 ms
#define VCO_LOCKING_TIME      8    /// 8 * 4.615 ms
#define CALIBRATION_FAIL_COUNT_THRESHOLD 5

#define REF_CLK_32K
#define PRESET_IF_CNT         274   /// 140000 * 64 / 32768 = 273.4375
#define PRESET_IF_DELTA       30    //30
#define IF_CONVERT_FACTOR     512   /// 32768 / 64 = 512
/*
#define REF_CLK_26M
#define PRESET_IF_CNT         265   /// 140000 * 49152 / 26000000 = 264.66
#define PRESET_IF_DELTA       29
#define IF_CONVERT_FACTOR     529   /// 26000000 / 49152 = 529
*/


/* Serial communication interfaces */
void  SerialCommInit(void);
void  SerialCommRelease(void);
void  SerialCommCryClkOn(void);
void  SerialCommCryClkOff(void);
void  GPIO_WriteIO(char data,char port);
int16 FMDrv_Search( uint8 search_direct);
void FMDrv_SetFreq_back( int16 curf ) ;

#if defined USE_I2C
void  SerialCommStart(void);
void  SerialCommStop(void);
uint8 SerialCommTxByte(uint8 data);
void  SerialCommRxByte(uint8 *data, uint8 ack);
#elif defined USE_3_WIRE
#endif

typedef struct {
   uint8 addr;
   uint8 value;
} ctrl_word_setting;

typedef struct {
   uint8 addr;
   uint8 and;
   uint8 or;
} ctrl_word_operation;

extern uint8 const FM_RADIO_INPUT_LEVEL_THRESHOLD;

/// Global variables for current FM status
static int16 _current_frequency = -1;
static uint8 _current_level = 0x80;
static bool  _is_fm_on = false;
static bool  _is_fm_mute = false;
static uint8 _rssi_threshold;
static uint8 _valid_rssi = 0;
static uint16 PRESET_IF_CNT_PLUS;		//add to adjust IF rounding

void   Delay_ms(kal_uint32 times)
{
	kal_uint32 delay1;
	kal_uint16   delay2;
       for(delay1=0;delay1<times;delay1++)
	   	 for(delay2=0;delay2<4700;delay2++){ }  // about 1ms
}

static void MT6189_Mute(uint8 mute);
void FMDrv_EvaluateRSSIThreshold(void);

uint16 FMshadowReg[45];
uint16	cwFMDefault[]={
#if 1
0x0000,
0x0000,	
0xd881,	//0x02
0x0000,	//87.5M
0x4400,	//0x04
0x05f8, 	//0x05
0x0000,
0x00cd,
0x0096,
0x0020,
0x4163,
0x0806,
0x5800,
0x5800,
0x5800,
0x5800,
0x4c08,	//0x4817UL,
0x20a2,
0x0000,
0x000f,
0x06de,
0xecc0,
0x0200,
0x5383,
0x95a4,
0xe848,
0x0700,	//0x0500UL,
0x00ff,	//0x00a4UL,
0x889b,
0x0d84,
0x4f04,
0x8832,
0x7f71,
0x0660,
0x4010,
0x6002,
0x1808,
0x6458,
0x787f,
0x0100,
0xc040,
0xc020,
0x0024,
0x0400,
0x0020,

#else

0x0000,
0x0000,
0xd881,	//0x02
0xa200,
0x4400,	//0x04
0x10ff, //0x05
0x0000,
0x00cd,
0x0096,
0x0020,
0x4163,
0x0806,
0x5800,
0x5800,
0x5800,
0x5800,
0x4c08,
0x20a2,
0x0000,
0x000f,
0x06de,
0xecc0,
0x0200,
0x5383,
0x95a4,
0xe848,
0x0700,
0x00ff,
0x889b,
0x0d84,
0x4f04,
0x8832,
0x7f71,
0x0660,
0x4010,
0x6002,
0x1808,
0x6458,
0x787f,
0x0100,
0xc040,
0xc020,
0x0024,
0x0400,
0x0020,
#endif
};





static uint8 MT6189_ReadCache(uint8 CW)
{
   if (CW < 52)
      return cw_cache[CW];
   else
      return cw_cache[CW-142];
}

static void MT6189_ReadByte(uint8 CW, uint8 *data)
{
  
   SerialCommStart();                /// send the start sequence
   SerialCommTxByte(MT6189_READ);    /// device ID and R/W bit
   SerialCommRxByte(data, 0);        /// read data and send ACK
   SerialCommStop();                 /// send the stop sequence
}


/* MT6189 does not support sequential write. */
static bool MT6189_WriteByte(uint8 CW, uint8 data)
{


   SerialCommStart();                /// send the start sequence
   SerialCommTxByte(MT6189_WRITE);   /// device ID and R/W bit
   SerialCommTxByte(data);           /// data to be written
   SerialCommStop();                 /// send the stop sequence

   return true;
}

kal_uint8 FmWaitSTC1(void) 
{
	Delay_ms(100);	// min 100ms
	return 1;
}

kal_uint8 FmWaitSTC0(void) 
{
	Delay_ms(50);
	return 1;
}

static uint16 MT6189_GetCurRSSI(void)
{
	uint8 data1,data2,data3,data4;

	kal_prompt_trace(MOD_MMI,"enter MT6189_GetCurRSSI");
	Delay_ms(50);
	SerialCommStart();                /// send the start sequence
	SerialCommTxByte(MT6189_READ);    /// device ID and R/W bit
	SerialCommRxByte(&data1, 0);        /// read data and send ACK
	SerialCommRxByte(&data2, 0);        /// read data and send ACK
	SerialCommRxByte(&data3, 0);        /// read data and send ACK
	SerialCommRxByte(&data4, 1);        /// read data and send ACK
	SerialCommStop();                 /// send the stop sequence

	return (data3*0x3f);
}


static void MT6189_Mute(uint8 mute) 
{
}

static int32 MT6189_GetCurIFCnt(uint8 count, uint8 early_check)