243 lines
7.9 KiB
C
243 lines
7.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
#ifndef __SOUND_CS8403_H
|
||
|
|
#define __SOUND_CS8403_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter
|
||
|
|
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
|
||
|
|
* Takashi Iwai <tiwai@suse.de>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef SND_CS8403
|
||
|
|
|
||
|
|
#ifndef SND_CS8403_DECL
|
||
|
|
#define SND_CS8403_DECL static
|
||
|
|
#endif
|
||
|
|
#ifndef SND_CS8403_DECODE
|
||
|
|
#define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits
|
||
|
|
#endif
|
||
|
|
#ifndef SND_CS8403_ENCODE
|
||
|
|
#define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)
|
||
|
|
{
|
||
|
|
if (bits & 0x01) { /* consumer */
|
||
|
|
if (!(bits & 0x02))
|
||
|
|
diga->status[0] |= IEC958_AES0_NONAUDIO;
|
||
|
|
if (!(bits & 0x08))
|
||
|
|
diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
|
||
|
|
switch (bits & 0x10) {
|
||
|
|
case 0x10: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE; break;
|
||
|
|
case 0x00: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; break;
|
||
|
|
}
|
||
|
|
if (!(bits & 0x80))
|
||
|
|
diga->status[1] |= IEC958_AES1_CON_ORIGINAL;
|
||
|
|
switch (bits & 0x60) {
|
||
|
|
case 0x00: diga->status[1] |= IEC958_AES1_CON_MAGNETIC_ID; break;
|
||
|
|
case 0x20: diga->status[1] |= IEC958_AES1_CON_DIGDIGCONV_ID; break;
|
||
|
|
case 0x40: diga->status[1] |= IEC958_AES1_CON_LASEROPT_ID; break;
|
||
|
|
case 0x60: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;
|
||
|
|
}
|
||
|
|
switch (bits & 0x06) {
|
||
|
|
case 0x00: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;
|
||
|
|
case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;
|
||
|
|
case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
diga->status[0] = IEC958_AES0_PROFESSIONAL;
|
||
|
|
switch (bits & 0x18) {
|
||
|
|
case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;
|
||
|
|
case 0x10: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;
|
||
|
|
case 0x08: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;
|
||
|
|
case 0x18: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
|
||
|
|
}
|
||
|
|
switch (bits & 0x60) {
|
||
|
|
case 0x20: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;
|
||
|
|
case 0x40: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;
|
||
|
|
case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;
|
||
|
|
case 0x60: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;
|
||
|
|
}
|
||
|
|
if (bits & 0x80)
|
||
|
|
diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga)
|
||
|
|
{
|
||
|
|
unsigned char bits;
|
||
|
|
|
||
|
|
if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {
|
||
|
|
bits = 0x01; /* consumer mode */
|
||
|
|
if (diga->status[0] & IEC958_AES0_NONAUDIO)
|
||
|
|
bits &= ~0x02;
|
||
|
|
else
|
||
|
|
bits |= 0x02;
|
||
|
|
if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT)
|
||
|
|
bits &= ~0x08;
|
||
|
|
else
|
||
|
|
bits |= 0x08;
|
||
|
|
switch (diga->status[0] & IEC958_AES0_CON_EMPHASIS) {
|
||
|
|
default:
|
||
|
|
case IEC958_AES0_CON_EMPHASIS_NONE: bits |= 0x10; break;
|
||
|
|
case IEC958_AES0_CON_EMPHASIS_5015: bits |= 0x00; break;
|
||
|
|
}
|
||
|
|
if (diga->status[1] & IEC958_AES1_CON_ORIGINAL)
|
||
|
|
bits &= ~0x80;
|
||
|
|
else
|
||
|
|
bits |= 0x80;
|
||
|
|
if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)
|
||
|
|
bits |= 0x60;
|
||
|
|
else {
|
||
|
|
switch(diga->status[1] & IEC958_AES1_CON_MAGNETIC_MASK) {
|
||
|
|
case IEC958_AES1_CON_MAGNETIC_ID:
|
||
|
|
bits |= 0x00; break;
|
||
|
|
case IEC958_AES1_CON_DIGDIGCONV_ID:
|
||
|
|
bits |= 0x20; break;
|
||
|
|
default:
|
||
|
|
case IEC958_AES1_CON_LASEROPT_ID:
|
||
|
|
bits |= 0x40; break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
switch (diga->status[3] & IEC958_AES3_CON_FS) {
|
||
|
|
default:
|
||
|
|
case IEC958_AES3_CON_FS_44100: bits |= 0x00; break;
|
||
|
|
case IEC958_AES3_CON_FS_48000: bits |= 0x02; break;
|
||
|
|
case IEC958_AES3_CON_FS_32000: bits |= 0x04; break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
bits = 0x00; /* professional mode */
|
||
|
|
if (diga->status[0] & IEC958_AES0_NONAUDIO)
|
||
|
|
bits &= ~0x02;
|
||
|
|
else
|
||
|
|
bits |= 0x02;
|
||
|
|
/* CHECKME: I'm not sure about the bit order in val here */
|
||
|
|
switch (diga->status[0] & IEC958_AES0_PRO_FS) {
|
||
|
|
case IEC958_AES0_PRO_FS_32000: bits |= 0x00; break;
|
||
|
|
case IEC958_AES0_PRO_FS_44100: bits |= 0x10; break; /* 44.1kHz */
|
||
|
|
case IEC958_AES0_PRO_FS_48000: bits |= 0x08; break; /* 48kHz */
|
||
|
|
default:
|
||
|
|
case IEC958_AES0_PRO_FS_NOTID: bits |= 0x18; break;
|
||
|
|
}
|
||
|
|
switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x20; break;
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x40; break;
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;
|
||
|
|
default:
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x60; break;
|
||
|
|
}
|
||
|
|
switch (diga->status[1] & IEC958_AES1_PRO_MODE) {
|
||
|
|
case IEC958_AES1_PRO_MODE_TWO:
|
||
|
|
case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;
|
||
|
|
default: bits |= 0x80; break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* SND_CS8403 */
|
||
|
|
|
||
|
|
#ifdef SND_CS8404
|
||
|
|
|
||
|
|
#ifndef SND_CS8404_DECL
|
||
|
|
#define SND_CS8404_DECL static
|
||
|
|
#endif
|
||
|
|
#ifndef SND_CS8404_DECODE
|
||
|
|
#define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits
|
||
|
|
#endif
|
||
|
|
#ifndef SND_CS8404_ENCODE
|
||
|
|
#define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)
|
||
|
|
{
|
||
|
|
if (bits & 0x10) { /* consumer */
|
||
|
|
if (!(bits & 0x20))
|
||
|
|
diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
|
||
|
|
if (!(bits & 0x40))
|
||
|
|
diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;
|
||
|
|
if (!(bits & 0x80))
|
||
|
|
diga->status[1] |= IEC958_AES1_CON_ORIGINAL;
|
||
|
|
switch (bits & 0x03) {
|
||
|
|
case 0x00: diga->status[1] |= IEC958_AES1_CON_DAT; break;
|
||
|
|
case 0x03: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;
|
||
|
|
}
|
||
|
|
switch (bits & 0x06) {
|
||
|
|
case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;
|
||
|
|
case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;
|
||
|
|
case 0x06: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
diga->status[0] = IEC958_AES0_PROFESSIONAL;
|
||
|
|
if (!(bits & 0x04))
|
||
|
|
diga->status[0] |= IEC958_AES0_NONAUDIO;
|
||
|
|
switch (bits & 0x60) {
|
||
|
|
case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;
|
||
|
|
case 0x40: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;
|
||
|
|
case 0x20: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;
|
||
|
|
case 0x60: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
|
||
|
|
}
|
||
|
|
switch (bits & 0x03) {
|
||
|
|
case 0x02: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;
|
||
|
|
case 0x01: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;
|
||
|
|
case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;
|
||
|
|
case 0x03: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;
|
||
|
|
}
|
||
|
|
if (!(bits & 0x80))
|
||
|
|
diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga)
|
||
|
|
{
|
||
|
|
unsigned char bits;
|
||
|
|
|
||
|
|
if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {
|
||
|
|
bits = 0x10; /* consumer mode */
|
||
|
|
if (!(diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT))
|
||
|
|
bits |= 0x20;
|
||
|
|
if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_NONE)
|
||
|
|
bits |= 0x40;
|
||
|
|
if (!(diga->status[1] & IEC958_AES1_CON_ORIGINAL))
|
||
|
|
bits |= 0x80;
|
||
|
|
if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)
|
||
|
|
bits |= 0x03;
|
||
|
|
switch (diga->status[3] & IEC958_AES3_CON_FS) {
|
||
|
|
default:
|
||
|
|
case IEC958_AES3_CON_FS_44100: bits |= 0x06; break;
|
||
|
|
case IEC958_AES3_CON_FS_48000: bits |= 0x04; break;
|
||
|
|
case IEC958_AES3_CON_FS_32000: bits |= 0x02; break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
bits = 0x00; /* professional mode */
|
||
|
|
if (!(diga->status[0] & IEC958_AES0_NONAUDIO))
|
||
|
|
bits |= 0x04;
|
||
|
|
switch (diga->status[0] & IEC958_AES0_PRO_FS) {
|
||
|
|
case IEC958_AES0_PRO_FS_32000: bits |= 0x00; break;
|
||
|
|
case IEC958_AES0_PRO_FS_44100: bits |= 0x40; break; /* 44.1kHz */
|
||
|
|
case IEC958_AES0_PRO_FS_48000: bits |= 0x20; break; /* 48kHz */
|
||
|
|
default:
|
||
|
|
case IEC958_AES0_PRO_FS_NOTID: bits |= 0x00; break;
|
||
|
|
}
|
||
|
|
switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x02; break;
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x01; break;
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;
|
||
|
|
default:
|
||
|
|
case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x03; break;
|
||
|
|
}
|
||
|
|
switch (diga->status[1] & IEC958_AES1_PRO_MODE) {
|
||
|
|
case IEC958_AES1_PRO_MODE_TWO:
|
||
|
|
case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;
|
||
|
|
default: bits |= 0x80; break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* SND_CS8404 */
|
||
|
|
|
||
|
|
#endif /* __SOUND_CS8403_H */
|