/* SCCSID @(#)spdif.c	1.5 6/16/97 */#ifdef SPDIF#include "common.h"#include "mvd.h"#include "vcxi.h"#include "ioport.h"#include "spdif.h"#include "buffer.h"#define tdmxmtslots tdmxmtslots0#define PRINTF(a)#ifdef OUT32BITS#define XMTSLOTS 0xff#else#define XMTSLOTS 0x66#endif#define RCVSLOTS 0x66/****************************************************************************** Initialise S/PDIF input. ******************************************************************************/void SPDIF_in_init(void){    int *cs8411 = (int *)0x14000000;    PRINTF(("SPDIF_out_int()\n"));    cs8411[2] = 0;	/* reset */    cs8411[3] = 0;      /* slave FSYNC and SCK */    if (vcx_xfer_mode == 6) {    	cs8411[3] = 0xbb;    /* ROER, SDF=011, FSF=10, master, falling edge */        cs8411[2] = 0x81;    /* FSYNC from data, buffer mode 0 */    }}/****************************************************************************** Initialise S/PDIF output. ******************************************************************************/#ifdef OUT32BITS#define OUTI2S 0x08	/* SDF=000, FSF=10, slave, falling edge. */#else#define OUTI2S 0x28	/* SDF=010, FSF=10, slave, falling edge. */#endifvoid SPDIF_out_init(void){    int i;    int *cs8401a = (int *)0x14000100;    int *cs8411 = (int *)0x14000000;    cs8411[2] = 0;	/* reset */    PRINTF(("SPDIF_out_int()\n"));    /* Transparent mode off. All int disabled. */    cs8401a[1] = 0;    /* 256FS. Always valid. Buffer mode 0. No CRCC. Mute and Reset. */    cs8401a[2] = 0x80;    /* I2S format is here */    if (vcx_xfer_mode == 6)    	cs8401a[3] = OUTI2S & ~2;	/* Force slave mode */    else    	cs8401a[3] = OUTI2S;    /* Initialise user data, which we don't use. */    for (i=4; i<8; i++) {	cs8401a[i] = 0;    }    /* Channel status byte 0, CONTROL and MODE */    /* Consumer use, 2 channel w/o pre-emphasis, copy prohibited, mode 0. */    cs8401a[8] = 0;    cs8401a[9] = 0;	/* Category 0 */    cs8401a[10] = 0;	/* Source # don't care. Channel # don't care */    cs8401a[11] = 0x40;	/* 48KHz, Level II accuracy whatever that means */    /* Clear the rest of the channel status word. */    for (i=12; i<32; i++) {	cs8401a[i] = 0;    }#if 0    SET_AUX4;    TRISTATE_AUX4;#endif    PRINTF(("Done SPDIF_out_int()\n"));}#if 0int SPDIF_n_int = 0;/****************************************************************************** S/PDIF output interrupt service. ******************************************************************************/void SPDIF_out_interrupt_service(void){    int *cs8401a = (int *)0x14000100;    mvd[riface_clear_dbgirq] = 0;    SPDIF_n_int++;    cs8401a[1] = 0x84;	/* Set BKST */}#endif#endif