1 #ifndef __SOUND_CS8403_H
2 #define __SOUND_CS8403_H
5 * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter
6 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
7 * Takashi Iwai <tiwai@suse.de>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #ifndef SND_CS8403_DECL
29 #define SND_CS8403_DECL static
31 #ifndef SND_CS8403_DECODE
32 #define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits
34 #ifndef SND_CS8403_ENCODE
35 #define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits
39 SND_CS8403_DECL
void SND_CS8403_DECODE(struct snd_aes_iec958
*diga
, unsigned char bits
)
41 if (bits
& 0x01) { /* consumer */
43 diga
->status
[0] |= IEC958_AES0_NONAUDIO
;
45 diga
->status
[0] |= IEC958_AES0_CON_NOT_COPYRIGHT
;
46 switch (bits
& 0x10) {
47 case 0x10: diga
->status
[0] |= IEC958_AES0_CON_EMPHASIS_NONE
; break;
48 case 0x00: diga
->status
[0] |= IEC958_AES0_CON_EMPHASIS_5015
; break;
51 diga
->status
[1] |= IEC958_AES1_CON_ORIGINAL
;
52 switch (bits
& 0x60) {
53 case 0x00: diga
->status
[1] |= IEC958_AES1_CON_MAGNETIC_ID
; break;
54 case 0x20: diga
->status
[1] |= IEC958_AES1_CON_DIGDIGCONV_ID
; break;
55 case 0x40: diga
->status
[1] |= IEC958_AES1_CON_LASEROPT_ID
; break;
56 case 0x60: diga
->status
[1] |= IEC958_AES1_CON_GENERAL
; break;
58 switch (bits
& 0x06) {
59 case 0x00: diga
->status
[3] |= IEC958_AES3_CON_FS_44100
; break;
60 case 0x02: diga
->status
[3] |= IEC958_AES3_CON_FS_48000
; break;
61 case 0x04: diga
->status
[3] |= IEC958_AES3_CON_FS_32000
; break;
64 diga
->status
[0] = IEC958_AES0_PROFESSIONAL
;
65 switch (bits
& 0x18) {
66 case 0x00: diga
->status
[0] |= IEC958_AES0_PRO_FS_32000
; break;
67 case 0x10: diga
->status
[0] |= IEC958_AES0_PRO_FS_44100
; break;
68 case 0x08: diga
->status
[0] |= IEC958_AES0_PRO_FS_48000
; break;
69 case 0x18: diga
->status
[0] |= IEC958_AES0_PRO_FS_NOTID
; break;
71 switch (bits
& 0x60) {
72 case 0x20: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_NONE
; break;
73 case 0x40: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_5015
; break;
74 case 0x00: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT
; break;
75 case 0x60: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID
; break;
78 diga
->status
[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC
;
82 SND_CS8403_DECL
unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958
*diga
)
86 if (!(diga
->status
[0] & IEC958_AES0_PROFESSIONAL
)) {
87 bits
= 0x01; /* consumer mode */
88 if (diga
->status
[0] & IEC958_AES0_NONAUDIO
)
92 if (diga
->status
[0] & IEC958_AES0_CON_NOT_COPYRIGHT
)
96 switch (diga
->status
[0] & IEC958_AES0_CON_EMPHASIS
) {
98 case IEC958_AES0_CON_EMPHASIS_NONE
: bits
|= 0x10; break;
99 case IEC958_AES0_CON_EMPHASIS_5015
: bits
|= 0x00; break;
101 if (diga
->status
[1] & IEC958_AES1_CON_ORIGINAL
)
105 if ((diga
->status
[1] & IEC958_AES1_CON_CATEGORY
) == IEC958_AES1_CON_GENERAL
)
108 switch(diga
->status
[1] & IEC958_AES1_CON_MAGNETIC_MASK
) {
109 case IEC958_AES1_CON_MAGNETIC_ID
:
111 case IEC958_AES1_CON_DIGDIGCONV_ID
:
114 case IEC958_AES1_CON_LASEROPT_ID
:
118 switch (diga
->status
[3] & IEC958_AES3_CON_FS
) {
120 case IEC958_AES3_CON_FS_44100
: bits
|= 0x00; break;
121 case IEC958_AES3_CON_FS_48000
: bits
|= 0x02; break;
122 case IEC958_AES3_CON_FS_32000
: bits
|= 0x04; break;
125 bits
= 0x00; /* professional mode */
126 if (diga
->status
[0] & IEC958_AES0_NONAUDIO
)
130 /* CHECKME: I'm not sure about the bit order in val here */
131 switch (diga
->status
[0] & IEC958_AES0_PRO_FS
) {
132 case IEC958_AES0_PRO_FS_32000
: bits
|= 0x00; break;
133 case IEC958_AES0_PRO_FS_44100
: bits
|= 0x10; break; /* 44.1kHz */
134 case IEC958_AES0_PRO_FS_48000
: bits
|= 0x08; break; /* 48kHz */
136 case IEC958_AES0_PRO_FS_NOTID
: bits
|= 0x18; break;
138 switch (diga
->status
[0] & IEC958_AES0_PRO_EMPHASIS
) {
139 case IEC958_AES0_PRO_EMPHASIS_NONE
: bits
|= 0x20; break;
140 case IEC958_AES0_PRO_EMPHASIS_5015
: bits
|= 0x40; break;
141 case IEC958_AES0_PRO_EMPHASIS_CCITT
: bits
|= 0x00; break;
143 case IEC958_AES0_PRO_EMPHASIS_NOTID
: bits
|= 0x60; break;
145 switch (diga
->status
[1] & IEC958_AES1_PRO_MODE
) {
146 case IEC958_AES1_PRO_MODE_TWO
:
147 case IEC958_AES1_PRO_MODE_STEREOPHONIC
: bits
|= 0x00; break;
148 default: bits
|= 0x80; break;
154 #endif /* SND_CS8403 */
158 #ifndef SND_CS8404_DECL
159 #define SND_CS8404_DECL static
161 #ifndef SND_CS8404_DECODE
162 #define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits
164 #ifndef SND_CS8404_ENCODE
165 #define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits
169 SND_CS8404_DECL
void SND_CS8404_DECODE(struct snd_aes_iec958
*diga
, unsigned char bits
)
171 if (bits
& 0x10) { /* consumer */
173 diga
->status
[0] |= IEC958_AES0_CON_NOT_COPYRIGHT
;
175 diga
->status
[0] |= IEC958_AES0_CON_EMPHASIS_5015
;
177 diga
->status
[1] |= IEC958_AES1_CON_ORIGINAL
;
178 switch (bits
& 0x03) {
179 case 0x00: diga
->status
[1] |= IEC958_AES1_CON_DAT
; break;
180 case 0x03: diga
->status
[1] |= IEC958_AES1_CON_GENERAL
; break;
182 switch (bits
& 0x06) {
183 case 0x02: diga
->status
[3] |= IEC958_AES3_CON_FS_32000
; break;
184 case 0x04: diga
->status
[3] |= IEC958_AES3_CON_FS_48000
; break;
185 case 0x06: diga
->status
[3] |= IEC958_AES3_CON_FS_44100
; break;
188 diga
->status
[0] = IEC958_AES0_PROFESSIONAL
;
190 diga
->status
[0] |= IEC958_AES0_NONAUDIO
;
191 switch (bits
& 0x60) {
192 case 0x00: diga
->status
[0] |= IEC958_AES0_PRO_FS_32000
; break;
193 case 0x40: diga
->status
[0] |= IEC958_AES0_PRO_FS_44100
; break;
194 case 0x20: diga
->status
[0] |= IEC958_AES0_PRO_FS_48000
; break;
195 case 0x60: diga
->status
[0] |= IEC958_AES0_PRO_FS_NOTID
; break;
197 switch (bits
& 0x03) {
198 case 0x02: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_NONE
; break;
199 case 0x01: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_5015
; break;
200 case 0x00: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT
; break;
201 case 0x03: diga
->status
[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID
; break;
204 diga
->status
[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC
;
208 SND_CS8404_DECL
unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958
*diga
)
212 if (!(diga
->status
[0] & IEC958_AES0_PROFESSIONAL
)) {
213 bits
= 0x10; /* consumer mode */
214 if (!(diga
->status
[0] & IEC958_AES0_CON_NOT_COPYRIGHT
))
216 if ((diga
->status
[0] & IEC958_AES0_CON_EMPHASIS
) == IEC958_AES0_CON_EMPHASIS_NONE
)
218 if (!(diga
->status
[1] & IEC958_AES1_CON_ORIGINAL
))
220 if ((diga
->status
[1] & IEC958_AES1_CON_CATEGORY
) == IEC958_AES1_CON_GENERAL
)
222 switch (diga
->status
[3] & IEC958_AES3_CON_FS
) {
224 case IEC958_AES3_CON_FS_44100
: bits
|= 0x06; break;
225 case IEC958_AES3_CON_FS_48000
: bits
|= 0x04; break;
226 case IEC958_AES3_CON_FS_32000
: bits
|= 0x02; break;
229 bits
= 0x00; /* professional mode */
230 if (!(diga
->status
[0] & IEC958_AES0_NONAUDIO
))
232 switch (diga
->status
[0] & IEC958_AES0_PRO_FS
) {
233 case IEC958_AES0_PRO_FS_32000
: bits
|= 0x00; break;
234 case IEC958_AES0_PRO_FS_44100
: bits
|= 0x40; break; /* 44.1kHz */
235 case IEC958_AES0_PRO_FS_48000
: bits
|= 0x20; break; /* 48kHz */
237 case IEC958_AES0_PRO_FS_NOTID
: bits
|= 0x00; break;
239 switch (diga
->status
[0] & IEC958_AES0_PRO_EMPHASIS
) {
240 case IEC958_AES0_PRO_EMPHASIS_NONE
: bits
|= 0x02; break;
241 case IEC958_AES0_PRO_EMPHASIS_5015
: bits
|= 0x01; break;
242 case IEC958_AES0_PRO_EMPHASIS_CCITT
: bits
|= 0x00; break;
244 case IEC958_AES0_PRO_EMPHASIS_NOTID
: bits
|= 0x03; break;
246 switch (diga
->status
[1] & IEC958_AES1_PRO_MODE
) {
247 case IEC958_AES1_PRO_MODE_TWO
:
248 case IEC958_AES1_PRO_MODE_STEREOPHONIC
: bits
|= 0x00; break;
249 default: bits
|= 0x80; break;
255 #endif /* SND_CS8404 */
257 #endif /* __SOUND_CS8403_H */