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#include
#include
#include
#include
#include
#include
#include
#include "def_type.h"
#include "app.h"
#include "tlv320api.h"
i32_t opentlv320(void)
{
i32_t fd = open("/dev/misc/tlv320",O_RDWR | O_NONBLOCK);
//非阻塞模式打开设备tlv320
if(fd
{
printf("open fail!\n");
return -1;
}
//打开失败，返回-1
else
{
return fd;
}
//打开成功，返回文件描述符fd
}
i32_t InAudioControl(u32_t voiceclass) //音量输入控制
{
i32_t fd = opentlv320();
//控制之前要打开设备，得到fd才能继续操作。
if(-1 == fd)
{
return -1;
//设备打开失败
}
//app_SetAudioValue(1, dbvolume, voiceclass);//写日志？？？？？？？？？？？//
app_SetAudioValue(1, dbmicvolume, voiceclass);//写日志？？？？？？？？？？？//
switch(voiceclass) //选择音量等级voiceclass
{
case 0: //静音
{
//i32_t val = 0x10000010;
i32_t val = 0x10000000; //要设定的音量值
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret) //ioctl操作失败，具体操作见后面设备驱动的接口定义。
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 1:
{
i32_t val = 0x10000004;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 2:
{
i32_t val = 0x10000008;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 3:
{
i32_t val = 0x1000000b;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 4:
{
i32_t val = 0x10000010;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 5:
{
i32_t val = 0x10000014;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 6:
{
i32_t val = 0x10000018;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 7:
{
i32_t val = 0x1000001b;
u32_t ret = ioctl(fd,0xaf03,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
case 8:
{
i32_t val = 0x1000001f;
u32_t ret = ioctl(fd,0xaf03,&val);
//使用左声道音量操作命令(0xaf03)将音量值0x1000001f写入到对应的音量操作寄存器中
/*
* extdrv/peripheral/ada/tlv320.h for Linux .
*
* History:
* 10-April-2006 create this file
#ifndef __INC_ADA_H
#define __INC_ADA_H
#define SET_TLV_SAMPLERATE 0xaF01
#define ANALOG_INPUT_PATH 0xaF02
#define LEFT_INPUT_VOLUME_MODIFY 0xaF03
#define RIGHT_INPUT_VOLUME_MODIFY 0xaF04
#define LINE_INPUT_MUTE 0xaF05
#define MIC_INPUT_MUTE 0xaF06
#define LEFT_HEADPHONE_VOLUME_MODIFY 0xaF07
#define RIGHT_HEADPHONE_VOLUME_MODIFY 0xaF08
#define HEADPHONE_VOLUME_MUTE 0xaF09
#define SET_TLV_WORK_MODE 0xaF0a
#define SET_8K_SAMPLERATE 0
#define SET_32K_SAMPLERATE 3
#define SET_48K_SAMPLERATE 5
#define SET_MASTER_MODE 0
#define SET_SLAVE_MODE 1
#endif
*/
/*
****************ioctl arguments used set code attr ,specification belown:*****************
*LEFT_INPUT_VOLUME_MODIFY :
* Left headphone volume control (1111001 = 0 dB default)
* 1111111 = +6 dB, 79 steps between +6 dB and .73 dB (mute),
* 0110000 = .73 dB (mute),any thing below 0110000 does
* nothing . still in muted
下面贴出对应的驱动程序#define LEFT_INPUT_VOLUME_MODIFY 0xaF03
static int tlv320_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
case LEFT_INPUT_VOLUME_MODIFY:
get_user(tmp,argp);
volume =(tmp & 0x0ff);
which_ada =(tmp & 0xf0000000);
which_ada = which_ada >> 28;
if((volume >0x1f )|| (volume
return -EINVAL;
gu8RegValue[which_ada][0] = volume;
hi_i2c_write(IIC_device_addr[which_ada], Lline_vol_ctrl, gu8RegValue[which_ada][0]);
break;
*/
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -4;
}
default:
close(fd);
return -5;
}
}
i32_t OutAudioControl(u32_t voiceclass)// 9 class :0 silence 1-8 eigth class //音量输出控制
{
i32_t fd = opentlv320();
if(-1 == fd)
{
return -1;
}
app_SetAudioValue(1, dbvolume, voiceclass);
switch(voiceclass)
{
case 0:
{
i32_t val = 0x10000030;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 1:
{
u32_t val = 0x1000005e;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 2:
{
u32_t val = 0x10000062;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 3:
{
u32_t val = 0x10000066;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 4:
{
u32_t val = 0x1000006a;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 5:
{
u32_t val = 0x10000070;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 6:
{
u32_t val = 0x10000075;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 7:
{
u32_t val = 0x1000007a;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
case 8:
{
u32_t val = 0x1000007f;
u32_t ret = ioctl(fd,0xaf07,&val);
if( 0 == ret)
{
close(fd);
return 0;
}
close(fd);
return -2;
}
default:
close(fd);
return -3;
}
}
#if 0
int main()
{
while(1)
{
u32_t regval = 0x10000030;
u32_t ret = AudioControl(®val);
regval ++ ;
printf("ret===%d\n",ret);
sleep(1);
if(regval==0x1000007f)
regval = 0x10000030;
}
}
#endif
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/78225/showart_1724714.html |
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发表于 2008-12-17 10:28