hw_gpio_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_GPIO_API.C
  
  REVISION HISTORY:
  
  Date       Ver Name                  Description
  ---------- --- --------------------- -----------------------------------------
  12/13/2004 1.0 jigwan Kang(xchannel)   Created   
 ...............................................................................
 
  DESCRIPTION:
  
  This Module contains functions for PPC405 GPIO.
  
 ...............................................................................
*/  
 

/** ************************************************************************* ** 
 ** includes
 ** ************************************************************************* **/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <asm/ioctl.h>
#include <asm/errno.h>

#include "ppc405_gpio.h"
#include "hw_gpio_api.h"


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


/** ************************************************************************* ** 
 ** typedefs
 ** ************************************************************************* **/

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

  
/** ************************************************************************* ** 
 ** locals
 ** ************************************************************************* **/
static S32	fd_gpio;


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


		
RETURN ppc405_gpio_open(void) 
{
	if((fd_gpio=open( "/dev/405_gpio", O_RDWR)) < 0 ) { 
		m_DEBUG("/dev/ppc405_gpio open error\n");
		return FAILURE;
	}

	return SUCCESS;
}

void ppc405_gpio_close(void)
{
   	close(fd_gpio);
}


VIDEO_MODE get_video_mode()
{
	struct ppc405gpio_ioctl_data ioctl_data;

	ioctl_data.device = 0;
	ioctl_data.mask = 0x10000000;
   	ioctl(fd_gpio, PPC405GPIO_IN, &ioctl_data);//read port
   	
	return (ioctl_data.data & ioctl_data.mask) ? NTSC: PAL;
;	
}

RETURN set_live_audio_ch(UNS32 arg)
{
	struct ppc405gpio_ioctl_data ioctl_data;

	ioctl_data.device = 0;
	ioctl_data.mask = SPEECH_MASK;
	switch(arg) {
		case 0:
			ioctl_data.data = SPEECH_CH1;
			break;
		case 1:
			ioctl_data.data = SPEECH_CH2;
			break;
		case 2:
			ioctl_data.data = SPEECH_CH3;
			break;
		case 3:
			ioctl_data.data = SPEECH_CH4;
			break;
		case 4:
			ioctl_data.data = SPEECH_EN;
			break;
		default:
			ioctl_data.data = SPEECH_CH1;
			break;
	}
	ioctl(fd_gpio, PPC405GPIO_OUT,   &ioctl_data);

	return SUCCESS;	
}

RETURN set_spot_out_ch(UNS32 arg)
{
	struct ppc405gpio_ioctl_data ioctl_data;

	ioctl_data.device = 0;
	ioctl_data.mask = SPOT_MASK;
	switch(arg) {
		case 0:
			ioctl_data.data = SPOT_CH1;
			break;
		case 1:
			ioctl_data.data = SPOT_CH2;
			break;
		case 2:
			ioctl_data.data = SPOT_CH3;
			break;
		case 3:
			ioctl_data.data = SPOT_CH4;
			break;
		default:
			ioctl_data.data = SPOT_CH1;
			break;
	}
	ioctl(fd_gpio, PPC405GPIO_OUT,   &ioctl_data);

	return SUCCESS;	
}

RETURN set_sensor_out_ch(UNS32 arg, BOOL normal_open)
{
	struct ppc405gpio_ioctl_data ioctl_data;
	UNS32 sensor_out_pin_table[4] = { 0x02000000, 0x00020000, 0x00010000, 0x00008000 };
	ioctl_data.device = 0;
	
	if(normal_open) { /* normal close set */
		ioctl_data.mask = sensor_out_pin_table[arg]; /* pin 6(out 0), 14(out 1), 15(out 2), 16(out 3) */
		ioctl_data.data = sensor_out_pin_table[arg];
	}
	else {                   /* normal open set */
		ioctl_data.mask = sensor_out_pin_table[arg]; /* pin 6(out 0), 14(out 1), 15(out 2), 16(out 3) */
		ioctl_data.data = 0x00;
	}
	
	ioctl(fd_gpio, PPC405GPIO_OUT, &ioctl_data);
	
	return SUCCESS;	
}

RETURN ppc405_gpio_in(UNS32 *arg)
{
	struct ppc405gpio_ioctl_data ioctl_data;

	ioctl_data.device = 0;
	ioctl_data.mask = 0xc3; /* pin 24(in 2), 25(in 3), 30(in 0), 31(in 1) */
	ioctl(fd_gpio, PPC405GPIO_IN, &ioctl_data);

	*arg = ioctl_data.data & ioctl_data.mask;
	
	return SUCCESS;
}


RETURN ppc405_gpio_ioctl(UNS32 cmd, UNS32 *arg)
{
#if 0
	ioctl(fd_gpio, cmd, arg);
#endif
      return SUCCESS;
}

void ppc405_gpio_at2041_reset(void)
{
	struct ppc405gpio_ioctl_data ioctl_data;
	
	/* hw reset at2041 */
	m_MSG("\nAT2041 Reset\n");
	ioctl_data.device = 0;
	
	ioctl_data.mask = 0x4000000; // pin 5
	ioctl_data.data = 0x00;
	ioctl(fd_gpio, PPC405GPIO_OUT, &ioctl_data);
	sleep(2);
//	usleep(100);
	ioctl_data.mask = 0x4000000; // pin 5
	ioctl_data.data =   0x4000000;
	ioctl(fd_gpio, PPC405GPIO_OUT, &ioctl_data);
	sleep(1);
//	usleep(100);
}
/* end of hw_gpio_api.c */