hw_lib.h

Audio codec--TLV320AIC31 裸测代码

#ifndef HW_LIB_H
#define HW_LIB_H

#ifdef __cplusplus
extern "C"
{
#endif

#ifndef _HAVE_U32
#define _HAVE_U32
typedef unsigned int u32;
#endif

/************************************************************************/
/* 
	alloc a block of physical-linear memory

out
	ret :	virtual address of the memory 
	*phy :	physical address                                                                */	
/************************************************************************/
void* hw_alloc_physmem( int size , u32*phy );

/************************************************************************/
/* free memory allocated by hw_alloc_physmem                   
in
	vir	: virtual address allocated
	size: size of the memory block
	phy	: physical address allocated
	                                                  */
/************************************************************************/
void  hw_free_physmem( void*vir);

/************************************************************************/
/* map physical space to virtual

in
	phy	: address

out
	ret	: mapped virtual address                                                                     */
/************************************************************************/
void* hw_map_io( u32 phy , int size , int cacheenable );
/************************************************************************/
/* free mapped space                                                                     */
/************************************************************************/
void hw_unmap_io( void*vir , int size );

#define InterruptID_ITUInput	1
#define InterruptID_ITUOutput	2
#define InterruptID_Mp4Decoder	3
#define InterruptID_Mp4Encoder	4
#define InterruptID_VIA		5
/************************************************************************/
/* initial interrupt

in
	id : interrupt id(irq or system_interrupt
out
	ret	: handle
                                                                     */
/************************************************************************/
void* hw_init_interrupt( int id );
/************************************************************************/
/* wait until interrupt occure or time out
in
	handle	: handle initialized by hw_init_interrupt 
	timeout	: time out value for wait
out
	*status : store interrupt status
	ret		: 0 indicate success, -1 indicate fail.

                                                                */
/************************************************************************/
int	hw_wait_interrupt( void*handle , unsigned int timeout );
/************************************************************************/
/* tell system interrupt has been handled                                                                     
in
	handle	: handle	: handle initialized by hw_init_interrupt 
*/
/************************************************************************/
void hw_complete_interrupt( void*handle );
/************************************************************************/
/* release interrupt handling
in
	handle	: handle	: handle initialized by hw_init_interrupt                                                                      */
/************************************************************************/
void hw_release_interrupt( void*handle );

/************************************************************************/
/* sleep
in
	ms	: m-seconds
*/
/************************************************************************/
void	hw_delay( int ms );

/************************************************************************/
/* initial a object for critical-section 
out	
	ret	: handle of the object
*/
/************************************************************************/
void* hw_init_critical(void);

/************************************************************************/
/* enter a critical-section 
in	
	h	: handle of the object
*/
/************************************************************************/
int hw_enter_critical(void*h);
/************************************************************************/
/* leave a critical-section 
in	
	h	: handle of the object
*/
/************************************************************************/
int hw_leave_critical(void*h);

/************************************************************************/
/* release a critical-section 
in	
	h	: handle of the object
*/
/************************************************************************/
void hw_release_critical(void*h);

/************************************************************************/
/* flush cache of the range of memory
in	
	vir	: address of the memory	
	size	: range of flushing
*/
/************************************************************************/
int	hw_flush_cache( void* vir , int size );

/************************************************************************/
/* create a thread 
in
	func	: function address for thread
	param	: param that pass to the function
out
	ret 	: handle of the thread
*/
/************************************************************************/
void* hw_create_thread( void*func , void*param );
/************************************************************************/
/* release thread
in
	handle	: handle of the thread
*/
/************************************************************************/
void  hw_release_thread( void*handle );

/************************************************************************/
/* create a event object
out
	ret		: handle of the object
*/
/************************************************************************/
void* hw_create_event();

/************************************************************************/
/* set the event object
in
	handle	: handle of the object
*/
/************************************************************************/
int   hw_set_event( void*handle );

/************************************************************************/
/* wait for event triggle
in
	handle	: handle of the object
	timeout	: time to wait
out
	ret		: 0 indicate success, 1 indicate time out, <0 indicate error
*/
/************************************************************************/
int	  hw_wait_event( void*handle , int timeout );

/************************************************************************/
/* release event object
in
	handle	: handle of the object
*/
/************************************************************************/
int   hw_release_event( void*handle );

u32	  hw_get_sys_tick();

int   hw_get_framebuffer( u32*framebuffer , u32*width , u32*height);

#define HW_TRACE_ERROR		0x01
#define HW_TRACE_IMPORTANT	0x02
#define HW_TRACE_TRACE		0x04
int	  hw_trace_init( int type , int prio );
int   hw_trace_msg( int prio , char* fmt, ...);
int	  hw_trace_end();
#ifdef __cplusplus
}
#endif
#endif