hw_tw2834_api.c

1、基于韩国at2041芯片开发的Linux环境的DVR代码。 2、以原来代码进行了修改。 3、主要修改网络通讯出现异常问题处理 4、硬盘覆盖录像不起作用

/* set tabstop=4 */
/********************************************************************************
 *                                                                              *
 * Copyright(C) 2004  Penta-Micro                                               *
 *                                                                              *
 * ALL RIGHT RESERVED                                                           *
 *                                                                              *
 * This software is the property of Penta-Micro and is furnished under          *
 * license by Penta-Micro. This software may be used only in accordance         *	
 * with the terms of said license. This copyright notice may not be             *
 * removed, modified or obliterated without the prior written permission        *
 * of Penta-Micro.                                                              *
 *                                                                              *
 * This software may not be copyed, transmitted, provided to or otherwise       *
 * made available to any other person, company, corporation	or other entity     *
 * except as specified in the terms of said license.                            *
 *                                                                              *
 * No right, title, ownership or other interest in the software is hereby       *
 * granted or transferred.                                                      *
 *                                                                              *
 * The information contained herein is subject to change without notice and     *
 * should not be construed as a commitment by Penta-Micro.                      *
 *                                                                              *
 ********************************************************************************
 
  MODULE NAME:  HW_TW2834_API.C
  
  REVISION HISTORY:
  
  Date       Ver Name                  Description
  ---------- --- --------------------- -----------------------------------------
  06/16/2005 1.0 JiGwanKang(xchannel)       Created   
 ...............................................................................
 
  DESCRIPTION:
  
  This Module contains functions for TW2834.
  
 ...............................................................................
*/  
 

/** ************************************************************************* ** 
 ** includes
 ** ************************************************************************* **/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <asm/ioctl.h>
#include <asm/errno.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <semaphore.h> 

#include "hw_tw2834_api.h"

#include "tbl_init_font.h"
#include "tbl_init_page0.h"
#include "tbl_init_page1.h"
#include "tbl_init_page2.h"

/** ************************************************************************* ** 
 ** defines
 ** ************************************************************************* **/
//#define m_DEBUG(format, args...)  printf(format, ## args) 
#define m_DEBUG(format, args...)  
#define m_MSG(format, args...)	printf(format, ## args) 
#define m_ERROR(format, args...)  printf(format, ## args);fflush(stdout); 


/** ************************************************************************* ** 
 ** typedefs
 ** ************************************************************************* **/
#ifdef I2C_INTERFACE

#else
/* TW2834 data structure */
typedef struct __IOCTL_TW283X__ {
	unsigned char 	addr;
	unsigned char	data[256];
	unsigned char 	bank;
	unsigned int 	len;
} IOCTL_TW283X;
#endif

	 
/** ************************************************************************* ** 
 ** globals
 ** ************************************************************************* **/

/** ************************************************************************* ** 
 ** locals
 ** ************************************************************************* **/
static S32	fd_tw2834;
static sem_t	tw2834_sem;


/** ************************************************************************* ** 
 ** forward declarations
 ** ************************************************************************* **/

//... only one path at once
void write_prop(UNS8 path, UNS8 range, UNS8 osd_page, UNS8 osd_size)
{
	UNS8 buf[10];
	
	if(path == Y_PATH)	
		range |= BIT7;

	buf[0] = range;
	buf[1] = osd_page;
	buf[2] = osd_size;

	tw2834_burst_write_reg(TW2834_PAGE1, 0x9b, buf, 3);  
	/* must be delay */
	usleep(10000);
}

UNS8 GetCodeLength(UNS8 *str)
{
	 UNS8 count=0;

	 while((*str++)!='\0')++count;

	 return (count);
}

void	 SelFont(UNS8 _path, UNS8  _line, UNS8  _page, UNS8  _field)			//... only one _path at once
{
	UNS8  t_field, t_field_en;
	UNS8  ii;

	for(ii=0;ii<TBL_OSD_PAGE_NUM;ii++){
		IfBitSet(_field,OSD_EN_ODD)	t_field = 0;
		else IfBitSet(_field,OSD_EN_EVEN)	t_field = 1;
		
		if((UNS8)(osd_tbl_info_page[ii][t_field]&0x000f) == _page){
			if(osd_tbl_info_size[ii][t_field] != 0xff){
				IfBitSet(osd_tbl_info_size[ii][t_field],BIT7)	t_field_en = OSD_EN_EVEN|OSD_EN_ODD;		//... twice resolution
				else	t_field_en = _field;

				if(_line != OSD_PROP_ALL)	_line |= OSD_PROP_ONE;
				IfBitSet(_path,X_PATH)	write_prop(X_PATH,_line,t_field_en|_page,osd_tbl_info_size[ii][t_field]&0x3f);
				IfBitSet(_path,Y_PATH)	write_prop(Y_PATH,_line,t_field_en|_page,osd_tbl_info_size[ii][t_field]&0x3f);
			}
		}
	}
}

void SetFontSpace(UNS8  path, UNS8  h_space, UNS8  v_space)
{
	UNS8 	temp;	

	temp = (h_space<<4)|v_space;
	IfBitSet(path,X_PATH)	tw2834_write_reg(TW2834_PAGE1,0xa1,temp);
	IfBitSet(path,Y_PATH)	tw2834_write_reg(TW2834_PAGE1,0xa3,temp);
}

void SetFontDelay(UNS8  path, UNS8  h_delay, UNS8  v_delay)
{
	UNS8 	temp;

	temp = (h_delay<<4)|v_delay;
	IfBitSet(path,X_PATH)	tw2834_write_reg(TW2834_PAGE1,0xa2,temp);
	IfBitSet(path,Y_PATH)	tw2834_write_reg(TW2834_PAGE1,0xa4,temp);
}

UNS8 ExtractFontTableData(UNS16 _tbl_index, UNS8 _page_field)
{
	UNS8 ii;
	
#ifdef	TBL_OSD_PG0_ODD
	if(_page_field == 0x00)	ii = tbl_osd_page0_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG0_EVEN
	if(_page_field == 0x01)	ii = tbl_osd_page0_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG1_ODD
	if(_page_field == 0x10)	ii = tbl_osd_page1_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG1_EVEN
	if(_page_field == 0x11)	ii = tbl_osd_page1_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG2_ODD
	if(_page_field == 0x20)	ii = tbl_osd_page2_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG2_EVEN 
	if(_page_field == 0x21)	ii = tbl_osd_page2_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG3_ODD
	if(_page_field == 0x30)	ii = tbl_osd_page3_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG3_EVEN
	if(_page_field == 0x31)	ii = tbl_osd_page3_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG4_ODD
	if(_page_field == 0x40)	ii = tbl_osd_page4_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG4_EVEN
	if(_page_field == 0x41)	ii = tbl_osd_page4_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG5_ODD
	if(_page_field == 0x50)	ii = tbl_osd_page5_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG5_EVEN
	if(_page_field == 0x51)	ii = tbl_osd_page5_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG6_ODD
	if(_page_field == 0x60)	ii = tbl_osd_page6_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG6_EVEN
	if(_page_field == 0x61)	ii = tbl_osd_page6_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG7_ODD
	if(_page_field == 0x70)	ii = tbl_osd_page7_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG7_EVEN
	if(_page_field == 0x71)	ii = tbl_osd_page7_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG8_ODD
	if(_page_field == 0x80)	ii = tbl_osd_page8_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG8_EVEN
	if(_page_field == 0x81)	ii = tbl_osd_page8_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG9_ODD
	if(_page_field == 0x90)	ii = tbl_osd_page9_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG9_EVEN
	if(_page_field == 0x91)	ii = tbl_osd_page9_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG10_ODD
	if(_page_field == 0xa0)	ii = tbl_osd_page10_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG10_EVEN
	if(_page_field == 0xa1)	ii = tbl_osd_page10_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG11_ODD
	if(_page_field == 0xb0)	ii = tbl_osd_page11_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG11_EVEN
	if(_page_field == 0xb1)	ii = tbl_osd_page11_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG12_ODD
	if(_page_field == 0xc0)	ii = tbl_osd_page12_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG12_EVEN
	if(_page_field == 0xc1)	ii = tbl_osd_page12_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG13_ODD
	if(_page_field == 0xd0)	ii = tbl_osd_page13_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG13_EVEN
	if(_page_field == 0xd1)	ii = tbl_osd_page13_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG14_ODD
	if(_page_field == 0xe0)	ii = tbl_osd_page14_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG14_EVEN
	if(_page_field == 0xe1)	ii = tbl_osd_page14_even[_tbl_index];
#endif
#ifdef	TBL_OSD_PG15_ODD
	if(_page_field == 0xf0)	ii = tbl_osd_page15_odd[_tbl_index];
#endif
#ifdef	TBL_OSD_PG15_EVEN
	if(_page_field == 0xf1)	ii = tbl_osd_page15_even[_tbl_index];
#endif

	return	ii;
}

void DumpFontSub(UNS16 _info_page, UNS8 _info_size)
{
	UNS16 array_index = 0, array_line;
	UNS8 t_cnt_index, t_cnt_line, t_cnt_data;
	UNS8 t_num_index, t_num_index_h;
	UNS8 t_num_line, t_num_data;
	UNS8 t_page_field=0;
	UNS8 ii;

	ii = (UNS8)((_info_page&0xf800)>>11);					//... check OSD_TBL_INDEX_NUM_V
	t_num_index_h = (UNS8)((_info_page&0x07e0)>>5);	//... check OSD_TBL_INDEX_NUM_H
	t_num_index =  t_num_index_h * ii;

	t_page_field |= (UNS8)((_info_page&0x000f)<<4);
	t_page_field |= (UNS8)((_info_page&0x0010)>>4);

	ii = (_info_size&0x30)>>4;
	t_num_line = 10+(ii<<1);								//... check OSD_TBL_SIZE_V;

	ii = _info_size&0x0f;									//... check OSD_TBL_SIZE_H;
	if(ii > 8)	t_num_data = 8;
	else{
		tw2834_write_reg(TW2834_PAGE1,0x97,0x00);		//... Font write data [7:0] layer0
		if(ii > 7)	t_num_data = 7;
		else{
			tw2834_write_reg(TW2834_PAGE1,0x96,0x00);		//... Font write data [15:8] layer0
			if(ii > 6)	t_num_data = 6;
			else{
				tw2834_write_reg(TW2834_PAGE1,0x95,0x00);		//... Font write data [23:16] layer0
				if(ii > 5)	t_num_data = 5;
				else{
					tw2834_write_reg(TW2834_PAGE1,0x94,0x00);		//... Font write data [31:24] layer0
					if(ii > 2)	t_num_data = 4;
					else{
						tw2834_write_reg(TW2834_PAGE1,0x93,0x00);			//... Font write data [39:32] layer0
						if(ii > 0)	t_num_data = 3;
						else{
							tw2834_write_reg(TW2834_PAGE1,0x92,0x00);		//... Font write data [47:40] layer0
							t_num_data = 2;
						}
					}
				}
			}
		}
	}

	for(t_cnt_index = 0 ; t_cnt_index < t_num_index ; t_cnt_index++){ /* writing to the fontRAM */ 
		array_index = (t_num_data * t_num_line)*t_num_index_h;	  /* total byte number of 1 index row */
		array_index = array_index * ( t_cnt_index/t_num_index_h);	  /* multiply array_index by offset for 1 index row */
		array_index = array_index + ((t_cnt_index%t_num_index_h)*t_num_data);	/* add array_index to offset for 1 index column */

		tw2834_write_reg(TW2834_PAGE1,0x98,t_cnt_index);        /* index set  */

		for(t_cnt_line=0 ; t_cnt_line < t_num_line ; t_cnt_line++){ /* one font write to the fontRAM (current font size is 40byte ) */
			array_line = t_cnt_line * (t_num_data * t_num_index_h);

			for(t_cnt_data=0 ; t_cnt_data < t_num_data ; t_cnt_data++){
				ii = ExtractFontTableData(array_index + array_line + t_cnt_data,t_page_field);
				tw2834_write_reg(TW2834_PAGE1,(0x90 + t_cnt_data),ii);
			}

			tw2834_write_reg(TW2834_PAGE1,0x99,(t_page_field&0xf0)|t_cnt_line);	/* font_page, font_line */
			if(t_num_data > 6)	ii = 0x04;
			else if(t_num_data > 4)	ii = 0x02;
			else	ii = 0x00;
			tw2834_write_reg(TW2834_PAGE1,0x9a,0xc0 | ii |(t_page_field & 0x01));	/* request_D/C, font_type=0, font_field=x */
		}
	}
}

RETURN tw2834_open(void) 
{
	sem_init(&tw2834_sem, 0, 1);
	
#ifdef I2C_INTERFACE
	if ( (fd_tw2834 = open("/dev/i2c-0", O_RDWR)) < 0 ) {
		m_ERROR("tw2834.c: tw2834 open failed\n");
		return FAILURE;
	}
#else
	if ( (fd_tw2834 = open("/dev/tw2834", O_RDWR)) < 0 ) {
		m_ERROR("tw2834.c: tw2834 open failed\n");
		return FAILURE;
	}
#endif

	return SUCCESS;
}

void tw2834_close(void)
{
	close(fd_tw2834);
	
	if(sem_destroy(&tw2834_sem)) 
		m_ERROR("\ntw2834: semaphore error");
}

RETURN tw2834_font_upload(void)
{
	UNS16  ii, page;
	UNS8   size;
	
	/* when the use to user defined font data, 
	    Font Data Upload routine */
	for(ii=0 ; ii<(TBL_OSD_PAGE_NUM<<1); ii++){
		page = *((UNS16 *)osd_tbl_info_page + ii);
		size = *((UNS8 *)osd_tbl_info_size + ii);
	
		if(size != 0xff) DumpFontSub(page, size);
	}

    return SUCCESS;
}

RETURN tw2834_write_reg(UNS8 page, UNS8 sub_addr, UNS8 data)
{
#ifdef I2C_INTERFACE
	UNS8	buf[4];	
#else
	IOCTL_TW283X ioctl_arg;
#endif

	sem_wait(&tw2834_sem);

#ifdef I2C_INTERFACE
	if (ioctl(fd_tw2834, I2C_SLAVE_FORCE, TW2834_WRITE_CMD) < 0) {
		m_ERROR("tw2834.c: set slave addr error\n");
		sem_post(&tw2834_sem);
		
		return FAILURE;
	}
#else
	ioctl_arg.addr = sub_addr;
	ioctl_arg.bank = page+1;
	ioctl_arg.data[0] = data;	
	ioctl_arg.len = 1;
	if (ioctl(fd_tw2834, REGISTER_WRITE, &ioctl_arg) < 0) {
		m_ERROR("tw2834.c: local bus write error\n");
		sem_post(&tw2834_sem);
		
		return FAILURE;
	}
#endif

#ifdef I2C_INTERFACE
	buf[0] = page;
	buf[1] = sub_addr;
	buf[2] = data;
	
	if (write(fd_tw2834, buf , 3) != 3) {
		m_ERROR("tw2834.c: write data error %02x\n", sub_addr);
		sem_post(&tw2834_sem);
		
		return FAILURE;
	}
#endif
	sem_post(&tw2834_sem);
	
	return SUCCESS;
}

RETURN tw2834_burst_write_reg(UNS8 page, UNS8 sub_addr, UNS8 *data, UNS16 length)
{
	UNS16   ii;
#ifdef I2C_INTERFACE
	UNS8	buf[256];	
#else
	IOCTL_TW283X ioctl_arg;
#endif

	sem_wait(&tw2834_sem);

#ifdef I2C_INTERFACE	
	if (ioctl(fd_tw2834, I2C_SLAVE_FORCE, TW2834_WRITE_CMD) < 0) {
		m_ERROR("tw2834.c: set slave addr error\n");
		sem_post(&tw2834_sem);
		
		return FAILURE;
	}

	buf[0] = page;
	buf[1] = sub_addr;
	for(ii=0;ii < length;ii++)  
		buf[2+ii] = *(data+ii);
	
	if (write(fd_tw2834, buf , length+2 ) != (length+2)) {
		m_ERROR("tw2834.c: write data error %02x\n", sub_addr);
		sem_post(&tw2834_sem);
		
		return FAILURE;
	}