fip.h

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

#ifndef __FIP_H__
#define __FIP_H__

#define FIP_TIMER_LOAD_VALUE	0xFFFF 
#define FIP_TIMER_PRESCALE	0x5
#define FIP_KEY_REPEAT		4

void fip_init(void);
void fip_wait_ready(void);
void fip_receive_scancode(unsigned long sc);
unsigned long (*fip_poll)(void);

/* Function called by the timer interrupt*/
/* return 1 if scancode has been pushed in FIFO */
int fip_timer(void);

#include "fip_private.h"

/* Display Macros */
#define FIP_DISPLAY(adr, data)	                       \
do {				                       \
    FIP_LOCK()                                         \
	fip_wait_ready();                                  \
    *(FIP_DISPLAY_DATA_REG) = data;                    \
    *(FIP_COMMAND_REG) = FIP_CMD_ADR_SETTING | (adr);  \
    FIP_UNLOCK()                                       \
} while(0)

#define FIP_DIMMER(val)                                               \
do {                                                                  \
    FIP_LOCK();                                                       \
	fip_wait_ready();                                                 \
    *FIP_COMMAND_REG = FIP_CMD_DISP_CTRL_TURN_DISPLAY_ON | (val&0xF); \
    FIP_UNLOCK();                                                     \
} while(0)

#define FIP_LED(led, on)	                                  \
do {				                                  \
    FIP_LOCK();                                                   \
	fip_wait_ready();                                             \
    if(on)                                                        \
	*(FIP_LED_DATA_REG) |= (1 << (led -1));                   \
    else                                                          \
	*(FIP_LED_DATA_REG) &= ~(1 << (led -1));                  \
    *(FIP_COMMAND_REG) = FIP_CMD_DATA_SET_RW_MODE_WRITE_LED_PORT; \
    FIP_UNLOCK();                                                 \
} while(0)

/* scancode macros */
unsigned long fip_read_scancode(unsigned long timeout);
#define FIP_READKEY(timeout) fip_read_scancode(timeout)

//Scancode FIFO
#define FIP_FIFO_SIZE 2
extern unsigned int fip_fifo[FIP_FIFO_SIZE];
extern unsigned int fip_fifo_first, fip_fifo_last;

#define FIP_FIFO_COUNT ((fip_fifo_last - fip_fifo_first)%FIP_FIFO_SIZE)
#define FIP_FIFO_EMPTY() (FIP_FIFO_COUNT==0)
#define FIP_FIFO_FULL() (FIP_FIFO_COUNT==(FIP_FIFO_SIZE-1))

#define FIP_FIFO_IN(c)                                 \
do {                                                   \
  fip_fifo[fip_fifo_last]=c;                           \
  fip_fifo_last=(fip_fifo_last+1)%FIP_FIFO_SIZE;       \
  if(fip_fifo_last==fip_fifo_first)                    \
      fip_fifo_first=(fip_fifo_first+1)%FIP_FIFO_SIZE; \
} while(0);

#define FIP_FIFO_OUT(pc)                           \
do {                                               \
  *(pc)=fip_fifo[fip_fifo_first];                  \
  fip_fifo_first=(fip_fifo_first+1)%FIP_FIFO_SIZE; \
} while(0);

#define FIP_FIFO_FLUSH()                           \
do {                                               \
  fip_fifo_last=fip_fifo_first;                    \
} while(0);


#endif /* __FIP_H__ */