void AC97_write_codec(unsigned char ucReg, unsigned short usData)
{
g_pAC97Reg->AC_CODEC_CMD = CMD_WRITE | CMD_ADDRESS(ucReg) | CMD_DATA(usData);
DelayLoop(CMD_DELAY);
g_pAC97Reg->AC_CODEC_CMD |= CMD_READ; //To receive SLOTREQ bits when VRA is '1'
DelayLoop(CMD_DELAY);
}
unsigned short AC97_read_codec(unsigned char ucReg)
{
unsigned short usVal;
// Read Dummy
usVal = STATUS_DATA(g_pAC97Reg->AC_CODEC_STAT);
DelayLoop(CMD_DELAY);
g_pAC97Reg->AC_CODEC_CMD = CMD_READ | CMD_ADDRESS(ucReg) | CMD_DATA(0x0);
DelayLoop(CMD_DELAY);
// Read Value
usVal = STATUS_DATA(g_pAC97Reg->AC_CODEC_STAT);
DelayLoop(CMD_DELAY);
g_pAC97Reg->AC_CODEC_CMD |= CMD_READ; //To receive SLOTREQ bits when VRA is '1'
DelayLoop(CMD_DELAY);
return usVal;
}
void device::data_talk(int secondary_address)
{
DMSG("> iec_data_talk");
secondary_command( CMD_DATA(secondary_address), true );
DMSG("< iec_data_talk");
}
void device::data_listen(int secondary_address)
{
DMSG("> iec_data_listen");
secondary_command( CMD_DATA(secondary_address), false );
DMSG("< iec_data_listen");
}
