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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __SOUND_CS8403_H3#define __SOUND_CS8403_H4 5/*6 *  Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter7 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,8 *		     Takashi Iwai <tiwai@suse.de>9 */10 11#ifdef SND_CS840312 13#ifndef SND_CS8403_DECL14#define SND_CS8403_DECL static15#endif16#ifndef SND_CS8403_DECODE17#define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits18#endif19#ifndef SND_CS8403_ENCODE20#define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits21#endif22 23 24SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)25{26	if (bits & 0x01) {	/* consumer */27		if (!(bits & 0x02))28			diga->status[0] |= IEC958_AES0_NONAUDIO;29		if (!(bits & 0x08))30			diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;31		switch (bits & 0x10) {32		case 0x10: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE; break;33		case 0x00: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; break;34		}35		if (!(bits & 0x80))36			diga->status[1] |= IEC958_AES1_CON_ORIGINAL;37		switch (bits & 0x60) {38		case 0x00: diga->status[1] |= IEC958_AES1_CON_MAGNETIC_ID; break;39		case 0x20: diga->status[1] |= IEC958_AES1_CON_DIGDIGCONV_ID; break;40		case 0x40: diga->status[1] |= IEC958_AES1_CON_LASEROPT_ID; break;41		case 0x60: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;42		}43		switch (bits & 0x06) {44		case 0x00: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;45		case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;46		case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;47		}48	} else {49		diga->status[0] = IEC958_AES0_PROFESSIONAL;50		switch (bits & 0x18) {51		case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;52		case 0x10: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;53		case 0x08: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;54		case 0x18: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;55		}56		switch (bits & 0x60) {57		case 0x20: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;58		case 0x40: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;59		case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;60		case 0x60: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;61		}62		if (bits & 0x80)63			diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;64	}65}66 67SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga)68{69	unsigned char bits;70 71	if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {72		bits = 0x01;	/* consumer mode */73		if (diga->status[0] & IEC958_AES0_NONAUDIO)74			bits &= ~0x02;75		else76			bits |= 0x02;77		if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT)78			bits &= ~0x08;79		else80			bits |= 0x08;81		switch (diga->status[0] & IEC958_AES0_CON_EMPHASIS) {82		default:83		case IEC958_AES0_CON_EMPHASIS_NONE: bits |= 0x10; break;84		case IEC958_AES0_CON_EMPHASIS_5015: bits |= 0x00; break;85		}86		if (diga->status[1] & IEC958_AES1_CON_ORIGINAL)87			bits &= ~0x80;88		else89			bits |= 0x80;90		if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)91			bits |= 0x60;92		else {93			switch(diga->status[1] & IEC958_AES1_CON_MAGNETIC_MASK) {94			case IEC958_AES1_CON_MAGNETIC_ID:95				bits |= 0x00; break;96			case IEC958_AES1_CON_DIGDIGCONV_ID:97				bits |= 0x20; break;98			default:99			case IEC958_AES1_CON_LASEROPT_ID:100				bits |= 0x40; break;101			}102		}103		switch (diga->status[3] & IEC958_AES3_CON_FS) {104		default:105		case IEC958_AES3_CON_FS_44100: bits |= 0x00; break;106		case IEC958_AES3_CON_FS_48000: bits |= 0x02; break;107		case IEC958_AES3_CON_FS_32000: bits |= 0x04; break;108		}109	} else {110		bits = 0x00;	/* professional mode */111		if (diga->status[0] & IEC958_AES0_NONAUDIO)112			bits &= ~0x02;113		else114			bits |= 0x02;115		/* CHECKME: I'm not sure about the bit order in val here */116		switch (diga->status[0] & IEC958_AES0_PRO_FS) {117		case IEC958_AES0_PRO_FS_32000:	bits |= 0x00; break;118		case IEC958_AES0_PRO_FS_44100:	bits |= 0x10; break;	/* 44.1kHz */119		case IEC958_AES0_PRO_FS_48000:	bits |= 0x08; break;	/* 48kHz */120		default:121		case IEC958_AES0_PRO_FS_NOTID: bits |= 0x18; break;122		}123		switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {124		case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x20; break;125		case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x40; break;126		case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;127		default:128		case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x60; break;129		}130		switch (diga->status[1] & IEC958_AES1_PRO_MODE) {131		case IEC958_AES1_PRO_MODE_TWO:132		case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;133		default: bits |= 0x80; break;134		}135	}136	return bits;137}138 139#endif /* SND_CS8403 */140 141#ifdef SND_CS8404142 143#ifndef SND_CS8404_DECL144#define SND_CS8404_DECL static145#endif146#ifndef SND_CS8404_DECODE147#define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits148#endif149#ifndef SND_CS8404_ENCODE150#define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits151#endif152 153 154SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)155{156	if (bits & 0x10) {	/* consumer */157		if (!(bits & 0x20))158			diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;159		if (!(bits & 0x40))160			diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;161		if (!(bits & 0x80))162			diga->status[1] |= IEC958_AES1_CON_ORIGINAL;163		switch (bits & 0x03) {164		case 0x00: diga->status[1] |= IEC958_AES1_CON_DAT; break;165		case 0x03: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;166		}167		switch (bits & 0x06) {168		case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;169		case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;170		case 0x06: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;171		}172	} else {173		diga->status[0] = IEC958_AES0_PROFESSIONAL;174		if (!(bits & 0x04))175			diga->status[0] |= IEC958_AES0_NONAUDIO;176		switch (bits & 0x60) {177		case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;178		case 0x40: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;179		case 0x20: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;180		case 0x60: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;181		}182		switch (bits & 0x03) {183		case 0x02: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;184		case 0x01: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;185		case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;186		case 0x03: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;187		}188		if (!(bits & 0x80))189			diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;190	}191}192 193SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga)194{195	unsigned char bits;196 197	if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {198		bits = 0x10;	/* consumer mode */199		if (!(diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT))200			bits |= 0x20;201		if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_NONE)202			bits |= 0x40;203		if (!(diga->status[1] & IEC958_AES1_CON_ORIGINAL))204			bits |= 0x80;205		if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)206			bits |= 0x03;207		switch (diga->status[3] & IEC958_AES3_CON_FS) {208		default:209		case IEC958_AES3_CON_FS_44100: bits |= 0x06; break;210		case IEC958_AES3_CON_FS_48000: bits |= 0x04; break;211		case IEC958_AES3_CON_FS_32000: bits |= 0x02; break;212		}213	} else {214		bits = 0x00;	/* professional mode */215		if (!(diga->status[0] & IEC958_AES0_NONAUDIO))216			bits |= 0x04;217		switch (diga->status[0] & IEC958_AES0_PRO_FS) {218		case IEC958_AES0_PRO_FS_32000:	bits |= 0x00; break;219		case IEC958_AES0_PRO_FS_44100:	bits |= 0x40; break;	/* 44.1kHz */220		case IEC958_AES0_PRO_FS_48000:	bits |= 0x20; break;	/* 48kHz */221		default:222		case IEC958_AES0_PRO_FS_NOTID:	bits |= 0x00; break;223		}224		switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {225		case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x02; break;226		case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x01; break;227		case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;228		default:229		case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x03; break;230		}231		switch (diga->status[1] & IEC958_AES1_PRO_MODE) {232		case IEC958_AES1_PRO_MODE_TWO:233		case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;234		default: bits |= 0x80; break;235		}236	}237	return bits;238}239 240#endif /* SND_CS8404 */241 242#endif /* __SOUND_CS8403_H */243