audio.h
/** \file
* Audio IC and sound device interface
*/
/*
* Copyright (C) 2009 Trammell Hudson <hudson+ml@osresearch.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _audio_h_
#define _audio_h_
#include "arm-mcr.h"
/*
* Audio information structure at 0x7324.
* This controls the AGC system.
*/
struct audio_in
{
uint8_t last_agc_on; // off_0x00;
uint8_t agc_on; // off_0x01;
uint8_t volume; // off_0x02;
uint8_t off_0x03;
struct semaphore * sem_interval; // off_0x04
uint32_t task_created; // off_0x08
uint32_t asif_started; // off_0x0c
uint32_t initialized; // off_0x10
struct semaphore * sem_task; // off_0x14
uint32_t windcut; // off_0x18;
int32_t sample_count; // off_0x1c
int32_t gain; // off_0x20, from 0 to -41
uint32_t max_sample; // off_0x24
} __attribute__((packed));
SIZE_CHECK_STRUCT( audio_in, 0x28 );
extern struct audio_in audio_in;
struct audio_ic
{
uint8_t off_0x00;
uint8_t off_0x01;
uint8_t alc_on; // off_0x02;
uint8_t off_0x03;
uint32_t off_0x04;
uint32_t off_0x08;
uint32_t off_0x0c;
uint32_t off_0x10;
uint32_t off_0x14;
uint32_t off_0x18;
uint32_t off_0x1c;
uint32_t off_0x20;
uint32_t off_0x24;
uint32_t off_0x28;
uint32_t off_0x2c;
struct semaphore * sem_0x30;
struct semaphore * sem_0x34;
struct semaphore * sem_0x38;
struct semaphore * sem_mic; // off_0x3c; maybe
struct semaphore * sem_0x40;
struct semaphore * sem_0x44;
struct semaphore * sem_alc; // off 0x48
uint32_t sioptr; // off_0x4c;
uint32_t off_0x50; // defaults to 1
};
SIZE_CHECK_STRUCT( audio_ic, 0x54 );
extern struct audio_ic audio_ic;
extern void sounddev_start_observer( void );
extern void sounddev_stop_observer( void );
/**
* Sound device structure.
*/
struct sounddev
{
uint8_t pad0[ 0x68 ];
struct semaphore * sem_volume; // off 0x68
uint32_t off_0x6c;
struct semaphore * sem_alc; // off 0x70
};
SIZE_CHECK_STRUCT( sounddev, 0x74 );
extern struct sounddev sounddev;
// Calls the unlock function when done if non-zero
extern void
sounddev_active_in(
void (*unlock_func)( void * ),
void * arg
);
extern void
sounddev_active_out(
void (*unlock_func)( void * ),
void * arg
);
/** Read and write commands to the AK4646 */
extern void
_audio_ic_read(
unsigned cmd,
unsigned * result
);
extern void
_audio_ic_write(
unsigned cmd
);
static inline uint8_t
audio_ic_read(
unsigned cmd
)
{
unsigned value = 0;
//uint32_t flags = cli();
_audio_ic_read( cmd, &value );
//sei( flags );
return value;
}
static inline void
audio_ic_write(
unsigned cmd
)
{
//uint32_t flags = cli();
_audio_ic_write( cmd );
//sei( flags );
}
extern void
audio_ic_sweep_message_queue( void );
#ifdef CONFIG_500D
#define AUDIO_IC_PM1 0x2000
#define AUDIO_IC_PM2 0x2100
#define AUDIO_IC_SIG1 0x2200
#define AUDIO_IC_SIG2 0x2300
#define AUDIO_IC_MODE1 0x2400
#define AUDIO_IC_MODE2 0x2500
#define AUDIO_IC_TIMER 0x2600
#define AUDIO_IC_ALC1 0x2700
#define AUDIO_IC_ALC2 0x2800
#define AUDIO_IC_IDVC 0x2900
#define AUDIO_IC_ODVC 0x2A00
#define AUDIO_IC_ALC3 0x2B00
#define AUDIO_IC_VIDCTRL 0x2C00
#define AUDIO_IC_ALCVOL 0x2D00
#define AUDIO_IC_SIG3 0x2E00
#define AUDIO_IC_DVC 0x2F00
#define AUDIO_IC_SIG4 0x3000
#define AUDIO_IC_FIL1 0x3100
#else
#define AUDIO_IC_PM1 0x2000
#define AUDIO_IC_PM2 0x2100
#define AUDIO_IC_SIG1 0x2200
#define AUDIO_IC_SIG2 0x2300
#define AUDIO_IC_ALC1 0x2700
#define AUDIO_IC_ALC2 0x2800
#define AUDIO_IC_IVL 0x2900
#define AUDIO_IC_IVR 0x2C00
#define AUDIO_IC_OVL 0x2A00
#define AUDIO_IC_OVR 0x4500
#define AUDIO_IC_ALCVOL 0x2D00
#define AUDIO_IC_MODE3 0x2E00
#define AUDIO_IC_MODE4 0x2F00
#define AUDIO_IC_PM3 0x3000
#define AUDIO_IC_FIL1 0x3100
#define AUDIO_IC_FIL3_0 0x3200
#define AUDIO_IC_FIL3_1 0x3300
#define AUDIO_IC_FIL3_2 0x3400
#define AUDIO_IC_FIL3_3 0x3500
#define AUDIO_IC_EQ0_0 0x3600
#define AUDIO_IC_EQ0_1 0x3700
#define AUDIO_IC_EQ0_2 0x3800
#define AUDIO_IC_EQ0_3 0x3900
#define AUDIO_IC_EQ0_4 0x3A00
#define AUDIO_IC_EQ0_5 0x3B00
#define AUDIO_IC_HPF0 0x3C00
#define AUDIO_IC_HPF1 0x3D00
#define AUDIO_IC_HPF2 0x3E00
#define AUDIO_IC_HPF3 0x3F00
#define AUDIO_IC_LPF0 0x4C00
#define AUDIO_IC_LPF1 0x4D00
#define AUDIO_IC_LPF2 0x4E00
#define AUDIO_IC_LPF3 0x4F00
#define AUDIO_IC_FIL2 0x5000
#endif
/** Table of calibrations for audio levels to db */
extern int audio_thresholds[];
struct audio_level
{
int last;
int avg;
int peak;
int peak_fast;
};
/** Read the raw level from the audio device.
*
* Expected values are signed 16-bit?
*/
static inline int16_t
audio_read_level( int channel )
{
uint32_t *audio_level = (uint32_t*)( 0xC0920000 + 0x110 );
return (int16_t) audio_level[channel];
}
struct audio_level *get_audio_levels(void);
//horiz shift of audio meters to allow for label and numerical dB readout
#define AUDIO_METER_OFFSET 20
#endif
