wm8775.c

1. 8623L平台

/*
 *
 * Copyright (c) 2001-2007 Sigma Designs, Inc. 
 * All Rights Reserved. Proprietary and Confidential.
 *
 */

/**
	@file   WM8775.c
	@brief  device specific functions for main application
	
	@author Christian Wolff Sean.Sekwon.Choi
*/

// to enable or disable the debug messages of this source file, put 1 or 0 below
#if 0
#define LOCALDBG ENABLE
#else
#define LOCALDBG DISABLE
#endif

#include "common.h"
#include "WM8775.h"
#include "i2c.h"

////////////////////////////////////////////////////////////////////////////////
//
// WM8775
//
////////////////////////////////////////////////////////////////////////////////
enum WM8775_audio_port{
	AIN1,
	AIN2,
	AIN3,
	AIN4,
};

static RMuint32 GetAudioPort(enum cap_board board,
			     enum cap_audio_input audio_input, 
			     RMuint32 audio_input_num )
{
	/*
	 * Board Specific Info
	 */

	/*
	 * sigma DTV8624 board: you have to check schematics to see what is connected to where
	 */
	if(board == cap_board_sigma844e1dtv8624){
		switch(audio_input){
		case cap_audio_input_tuner: 
			return AIN4;
			break;
		case cap_audio_input_stereo:
			switch(audio_input_num){
			case 0:
				return AIN1;
				break;
			case 1:
				return AIN2;
				break;
			case 2:
				return AIN3;
				break;
			default:
				break;
			}
			break;
		default:
			return AIN1;
			break;
		}
	}
	
	return AIN1; // default
}

struct cap_WM8775_instance {
	struct RUA *pRUA;
	RMuint32 I2CModuleID;
	struct EMhwlibI2CDeviceParameter I2CDevice;
	RMuint8 BaseDevice;
};

RMstatus cap_WM8775_open(struct RUA *pRUA, 
			 struct cap_WM8775_instance **ppWM8775, 
			 RMuint32 I2CModuleID, 
			 struct EMhwlibI2CDeviceParameter *pI2CDevice)
{
	struct cap_WM8775_instance *pWM8775;
	
	RMDBGLOG((FUNCNAME, "%s\n",__func__));

	// Sanity checks
	if (ppWM8775 == NULL) return RM_FATALINVALIDPOINTER;
	*ppWM8775 = NULL;
	if (pRUA == NULL) return RM_FATALINVALIDPOINTER;
	
	// Allocate and clear local instance
	pWM8775 = (struct cap_WM8775_instance *)RMMalloc(sizeof(struct cap_WM8775_instance));
	if (pWM8775 == NULL) {
		RMDBGLOG((ENABLE, "FATAL! Not enough memory for struct cap_WM8775_instance!\n"));
		return RM_FATALOUTOFMEMORY;
	}
	RMMemset(pWM8775, 0, sizeof(struct cap_WM8775_instance));
	*ppWM8775 = pWM8775;
	
	// Set default and startup values
	pWM8775->pRUA = pRUA;
	pWM8775->I2CModuleID = I2CModuleID;
	pWM8775->I2CDevice = *pI2CDevice;
	pWM8775->BaseDevice = pI2CDevice->DevAddr;
	
	return RM_OK;
}

RMstatus cap_WM8775_close(struct cap_WM8775_instance *pWM8775)
{
	RMDBGLOG((FUNCNAME, "%s\n",__func__));	
	// Sanity checks
	if (pWM8775 == NULL) return RM_FATALINVALIDPOINTER;
	
	// Free all ressources
	RMFree(pWM8775);
	
	return RM_OK;
}

RMstatus cap_WM8775_tristate(struct cap_WM8775_instance *pWM8775)
{
	int i;
	RMuint16 i2c_data[][2]= {
		{0x0D, ((0x0D<<1) | (0x0020<<8))},  // bit 6 Analog input disable
		{0x0D, ((0x0D<<1) | (0x0002<<8))},  // bit 1 ADC power down
		{0x0D, ((0x0D<<1) | (0x0001<<8))},  // bit 0 power down
	};

	RMDBGLOG((FUNCNAME, "%s\n",__func__));

	for(i = 0; i<3; i++){
		cap_i2c_write_data(pWM8775, pWM8775->BaseDevice, i2c_data[i][0], &i2c_data[i][1], 2);
	}
	return RM_OK;
}

RMstatus cap_WM8775_init_capture(struct cap_WM8775_instance *pWM8775,
				 enum cap_board board,
				 enum cap_audio_input audio_input, 
				 RMuint32 audio_input_num )
{
	RMuint32 audio_port;
	RMuint16 input, i;

	// Wolfson WM8775 setup
	RMuint16 i2c_data[][2] = {
		{0x17, ((0x17<<1) | (0x0000 <<8) )},  // 0  reset
		{0x0D, ((0x0D<<1) | (0x0000 <<8) )},  // 1  power up
		{0x0C, ((0x0C<<1) | (0x0002 <<8) )},  // 2  256fs, slave mode
		{0x0B, ((0x0B<<1) | (0x0022 <<8) )},  // 3  i2s, 24bit
		{0x15, ((0x15<<1) | (0x000f <<8) )},  // 4  all inputs
	};

	RMDBGLOG((FUNCNAME, "%s\n",__func__));
	audio_port = GetAudioPort(board, audio_input, audio_input_num);

	switch(audio_port){
	case AIN1:input = ((0x15<<1) | (0x0001<<8));break;
	case AIN2:input = ((0x15<<1) | (0x0002<<8));break;
	case AIN3:input = ((0x15<<1) | (0x0004<<8));break;
	case AIN4:input = ((0x15<<1) | (0x0008<<8));break;
	default:input = 0;break;
	}
	i2c_data[4][1] = input;

	for(i = 0; i<5; i++){
		cap_i2c_write_data(pWM8775, pWM8775->BaseDevice, (RMuint8)i2c_data[i][0], &i2c_data[i][1], 2);
	}
	return RM_OK;
}

RMstatus cap_WM8775_setup_output(struct cap_WM8775_instance *pWM8775, 
				 struct cap_update *pUpdate)
{
	RMDBGLOG((FUNCNAME, "%s\n",__func__));	
	
	/* WM8775 is used as slave mode */

	/* need to figure out how to change AIN# when user change line in on the fly */

	return RM_OK;
}

RMstatus cap_WM8775_check_int(struct cap_WM8775_instance *pWM8775)
{
	RMDBGLOG((FUNCNAME, "%s\n",__func__));	
	return RM_OK;
}

RMstatus cap_WM8775_handle_int(struct cap_WM8775_instance *pWM8775, 
			       struct cap_update *pUpdate)
{
	RMDBGLOG((FUNCNAME, "%s\n",__func__));	
	return RM_OK;
}