| 
									
										
										
										
											2005-04-16 15:20:36 -07:00
										 |  |  | #ifndef __SOUND_CS8403_H
 | 
					
						
							|  |  |  | #define __SOUND_CS8403_H
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | /*
 | 
					
						
							|  |  |  |  *  Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter | 
					
						
							| 
									
										
										
										
											2007-10-15 09:50:19 +02:00
										 |  |  |  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>, | 
					
						
							| 
									
										
										
										
											2005-04-16 15:20:36 -07:00
										 |  |  |  *		     Takashi Iwai <tiwai@suse.de> | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *   This program is free software; you can redistribute it and/or modify | 
					
						
							|  |  |  |  *   it under the terms of the GNU General Public License as published by | 
					
						
							|  |  |  |  *   the Free Software Foundation; either version 2 of the License, or | 
					
						
							|  |  |  |  *   (at your option) any later version. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *   This program is distributed in the hope that it will be useful, | 
					
						
							|  |  |  |  *   but WITHOUT ANY WARRANTY; without even the implied warranty of | 
					
						
							|  |  |  |  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
					
						
							|  |  |  |  *   GNU General Public License for more details. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *   You should have received a copy of the GNU General Public License | 
					
						
							|  |  |  |  *   along with this program; if not, write to the Free Software | 
					
						
							|  |  |  |  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #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
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							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2005-11-17 14:17:19 +01:00
										 |  |  | SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) | 
					
						
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											2005-04-16 15:20:36 -07:00
										 |  |  | { | 
					
						
							|  |  |  | 	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; | 
					
						
							|  |  |  | 	} | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2005-11-17 14:17:19 +01:00
										 |  |  | SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga) | 
					
						
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										 |  |  | { | 
					
						
							|  |  |  | 	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; | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
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							|  |  |  | #endif /* SND_CS8403 */
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							|  |  |  | 
 | 
					
						
							|  |  |  | #ifdef SND_CS8404
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							|  |  |  | 
 | 
					
						
							|  |  |  | #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
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2005-11-17 14:17:19 +01:00
										 |  |  | SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) | 
					
						
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										 |  |  | { | 
					
						
							|  |  |  | 	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; | 
					
						
							|  |  |  | 	} | 
					
						
							|  |  |  | } | 
					
						
							|  |  |  | 
 | 
					
						
							| 
									
										
										
										
											2005-11-17 14:17:19 +01:00
										 |  |  | SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga) | 
					
						
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										 |  |  | { | 
					
						
							|  |  |  | 	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 */
 |