radio_player.c

Philip tea 5767 FM 驱动用应用程序 char FM_Init(char bandinfo, char softlev)

/**
refactored by [e-mail]
2007-02-08
*/
#include "includes.h"
#include "actions_reg_213x.h"
#include "atj213x.h"
#include "radio_player.h"
#include "irq_timer.h"          //soft timer.
#include "device.h"             //setupCorePll, changeCorePll, chipCheck


//#define FM_DBG 
#ifdef FM_DBG
#define dbg(x...)   printf("FM dbg : " x)
#else
#define dbg(...)     do { } while (0)
#endif

static radio_info_t radio_info = 
{
	.status = PLAYER_STOPPED,
	.current_freq = 87000,
//	.search_step = 0, //not used
	.stereo_status = 1, //mono mode
	.band_mode = US,	//band info
	.cur_volume = 0X10,
	.threshold = 0x5,
	.intensity =0
};

static radio_info_t null_info;  //just to fool the user
void fm_set_pa_enable(void);


void * radioOpen(void* nullp)
{
int ret;
int bandinfo;	

	dbg(" into radioOpen \n");
	/* 系统频率初始为0级 */
//	setupCorePll(2);
//	sys_clk = 2;

#if 0	
	/* 构造定时器 */
	timer.timerHandler = (void *)timer_handler;
	timer.timerValue = 2*100;      //定时器时间间隔定为2秒
	timer.type = TIMER_CYCLE;
	timeno = set_timer(&timer);	
#endif

	i2c_get_gpio();

	fm_host_init();

	bandinfo = 0; 	//default US mode
	ret = fm_init(bandinfo);

	#if 0
	if(ret){
		
//		changeCorePll(0,sys_clk); 
//		sys_clk = 0;		
		
		i2c_release_gpio();

		printf("fm_dbg: fm_init falied\n");
		return (void *)0;
	}
	#endif
	
//	fm_stop_playing();
	radio_info.band_mode = bandinfo;
	
	i2c_release_gpio();

	dbg("open succ\n");
	return  &null_info;
}




int radioCmd(void *handle,unsigned int cmd,unsigned int param)
{

int ret;
unsigned int * value_p;
player_status_t * intensity_ptr;
radio_info_t * fm_info_ptr;

	dbg("into  radioCmd\n\n");
//	dbg("\n");
	
	ret = 0; //always success
	i2c_get_gpio();

	switch (cmd) {
	case GET_RADIO_STEREO_MODE:
		*((unsigned int *) param) = radio_info.stereo_status;
		
		break;

	case SET_RADIO_BAND_MODE:
		ret = fm_set_band_mode(param);
		if (!ret)  
			radio_info.band_mode = ( (param == 0) ? 0 :1 ) ; 	
		
		break;


	case SET_RADIO_FREQ://should named IS_FREQ_VALID_STATION 
#if 0
/********************************* 搜索电台时需要升高频率*******************************************/		
		pullup_flag = 1;   //系统需要升频
		changeCorePll(2, sys_clk);
		sys_clk = 2;
/********************************************************************************************/	
#endif
		ret = is_freq_valid_station(param);
		radio_info.current_freq = param;
		fm_get_current_station_intensity(&(radio_info.intensity));
		fm_get_stereo_mode(&(radio_info.stereo_status));
		radio_info.status = FM_SEARCHING;
		break;
		
	case PLAY:
		ret = fm_start_playing();
		if(!ret)
			radio_info.status = PLAYER_PLAYING;
		break;
		
	case STOP:
		ret = fm_stop_playing();
		if(!ret)
			radio_info.status = PLAYER_STOPPED;
		break;
		
	case GET_RADIO_INFO:
		*((radio_info_t*)param) = radio_info;
		break;
#if 0		
	case SET_PLAYER_VOLUME:
		ret = fm_set_volume(param);
		if(!ret)
			radio_info.cur_volume = param;
		break;
#endif		
		
	case GET_PLAYER_STATUS:
		*(player_status_t *)param = radio_info.status;
		break;
	case SET_RADIO_THRESHOLD:	//should named set threshold
		ret = fm_set_intensity_threshold(param);
		if(!ret)
			radio_info.threshold = param;
		break;

	case GET_RADIO_INTENSITY:
		*(unsigned int*)param = radio_info.intensity;
		break;
	case SET_INTERNEL_PA_EN:
		fm_set_pa_enable();
		break;
		

	default:
		ret = -1;
		break;
	}

	i2c_release_gpio();

	dbg(" ret=%d \n");
	return ret;
}

int radioClose(void *handle, void *param) 
{
	int ret;

	dbg("into radioClose\n");
	i2c_get_gpio();
	fm_host_exit();
	
	i2c_release_gpio();

	#if 0
	/* 系统频率改回为0级 */
	changeCorePll(0,sys_clk);
	
	del_timer(timeno);
	#endif
	
	return 0; //success
}


int is_earphone_inserted(void)
{
	act_writel(act_readl(GPIO_AOUTEN) & ~(0x1 << 26), GPIO_AOUTEN);
  	act_writel(act_readl(GPIO_AINEN) | (0x1 << 26), GPIO_AINEN);

	if (act_readl(GPIO_ADAT) & (0x1 << 26))
		return -1;		///not
		
	return 0; 	//yes, the earphone is inserted

}

void fm_set_pa_enable(void)
{
	int val = act_readl(DAC_ANALOG) & (0x1 << 1);
	if (val != 1)
	{
		act_writel(act_readl(DAC_ANALOG) |(0x1 << 1), DAC_ANALOG);
	}
}

/*
****************************************************************************************************
*
*                                   以下模块是专供FM在96MHz附近搜台用的功能块
*
****************************************************************************************************
*/

void delay(void)
{
  int i;

  // delay must enough longer,
  // herwise key peiding can not cleared stablely
  for(i = 0; i < 20; i++);
}

void read_modify_write(int reg, int val)
{
  volatile int * p = (volatile int *)reg;
  int old_val = *p;
  int new_val;
  *p = val;
  new_val = *p;

  //  printf("\n reg addr: %x reg_old: %x  reg_new:%x \n", reg, old_val, new_val);
}