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1da177e4 LT |
1 | #ifndef __SOUND_CS8403_H |
2 | #define __SOUND_CS8403_H | |
3 | ||
4 | /* | |
5 | * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter | |
c1017a4c | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, |
1da177e4 LT |
7 | * Takashi Iwai <tiwai@suse.de> |
8 | * | |
9 | * | |
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. | |
14 | * | |
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. | |
19 | * | |
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 | |
23 | * | |
24 | */ | |
25 | ||
26 | #ifdef SND_CS8403 | |
27 | ||
28 | #ifndef SND_CS8403_DECL | |
29 | #define SND_CS8403_DECL static | |
30 | #endif | |
31 | #ifndef SND_CS8403_DECODE | |
32 | #define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits | |
33 | #endif | |
34 | #ifndef SND_CS8403_ENCODE | |
35 | #define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits | |
36 | #endif | |
37 | ||
38 | ||
97f02e05 | 39 | SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
1da177e4 LT |
40 | { |
41 | if (bits & 0x01) { /* consumer */ | |
42 | if (!(bits & 0x02)) | |
43 | diga->status[0] |= IEC958_AES0_NONAUDIO; | |
44 | if (!(bits & 0x08)) | |
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; | |
49 | } | |
50 | if (!(bits & 0x80)) | |
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; | |
57 | } | |
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; | |
62 | } | |
63 | } else { | |
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; | |
70 | } | |
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; | |
76 | } | |
77 | if (bits & 0x80) | |
78 | diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC; | |
79 | } | |
80 | } | |
81 | ||
97f02e05 | 82 | SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga) |
1da177e4 LT |
83 | { |
84 | unsigned char bits; | |
85 | ||
86 | if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) { | |
87 | bits = 0x01; /* consumer mode */ | |
88 | if (diga->status[0] & IEC958_AES0_NONAUDIO) | |
89 | bits &= ~0x02; | |
90 | else | |
91 | bits |= 0x02; | |
92 | if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT) | |
93 | bits &= ~0x08; | |
94 | else | |
95 | bits |= 0x08; | |
96 | switch (diga->status[0] & IEC958_AES0_CON_EMPHASIS) { | |
97 | default: | |
98 | case IEC958_AES0_CON_EMPHASIS_NONE: bits |= 0x10; break; | |
99 | case IEC958_AES0_CON_EMPHASIS_5015: bits |= 0x00; break; | |
100 | } | |
101 | if (diga->status[1] & IEC958_AES1_CON_ORIGINAL) | |
102 | bits &= ~0x80; | |
103 | else | |
104 | bits |= 0x80; | |
105 | if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL) | |
106 | bits |= 0x60; | |
107 | else { | |
108 | switch(diga->status[1] & IEC958_AES1_CON_MAGNETIC_MASK) { | |
109 | case IEC958_AES1_CON_MAGNETIC_ID: | |
110 | bits |= 0x00; break; | |
111 | case IEC958_AES1_CON_DIGDIGCONV_ID: | |
112 | bits |= 0x20; break; | |
113 | default: | |
114 | case IEC958_AES1_CON_LASEROPT_ID: | |
115 | bits |= 0x40; break; | |
116 | } | |
117 | } | |
118 | switch (diga->status[3] & IEC958_AES3_CON_FS) { | |
119 | default: | |
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; | |
123 | } | |
124 | } else { | |
125 | bits = 0x00; /* professional mode */ | |
126 | if (diga->status[0] & IEC958_AES0_NONAUDIO) | |
127 | bits &= ~0x02; | |
128 | else | |
129 | bits |= 0x02; | |
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 */ | |
135 | default: | |
136 | case IEC958_AES0_PRO_FS_NOTID: bits |= 0x18; break; | |
137 | } | |
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; | |
142 | default: | |
143 | case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x60; break; | |
144 | } | |
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; | |
149 | } | |
150 | } | |
151 | return bits; | |
152 | } | |
153 | ||
154 | #endif /* SND_CS8403 */ | |
155 | ||
156 | #ifdef SND_CS8404 | |
157 | ||
158 | #ifndef SND_CS8404_DECL | |
159 | #define SND_CS8404_DECL static | |
160 | #endif | |
161 | #ifndef SND_CS8404_DECODE | |
162 | #define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits | |
163 | #endif | |
164 | #ifndef SND_CS8404_ENCODE | |
165 | #define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits | |
166 | #endif | |
167 | ||
168 | ||
97f02e05 | 169 | SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
1da177e4 LT |
170 | { |
171 | if (bits & 0x10) { /* consumer */ | |
172 | if (!(bits & 0x20)) | |
173 | diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT; | |
174 | if (!(bits & 0x40)) | |
175 | diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; | |
176 | if (!(bits & 0x80)) | |
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; | |
181 | } | |
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; | |
186 | } | |
187 | } else { | |
188 | diga->status[0] = IEC958_AES0_PROFESSIONAL; | |
189 | if (!(bits & 0x04)) | |
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; | |
196 | } | |
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; | |
202 | } | |
203 | if (!(bits & 0x80)) | |
204 | diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC; | |
205 | } | |
206 | } | |
207 | ||
97f02e05 | 208 | SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga) |
1da177e4 LT |
209 | { |
210 | unsigned char bits; | |
211 | ||
212 | if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) { | |
213 | bits = 0x10; /* consumer mode */ | |
214 | if (!(diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT)) | |
215 | bits |= 0x20; | |
216 | if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_NONE) | |
217 | bits |= 0x40; | |
218 | if (!(diga->status[1] & IEC958_AES1_CON_ORIGINAL)) | |
219 | bits |= 0x80; | |
220 | if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL) | |
221 | bits |= 0x03; | |
222 | switch (diga->status[3] & IEC958_AES3_CON_FS) { | |
223 | default: | |
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; | |
227 | } | |
228 | } else { | |
229 | bits = 0x00; /* professional mode */ | |
230 | if (!(diga->status[0] & IEC958_AES0_NONAUDIO)) | |
231 | bits |= 0x04; | |
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 */ | |
236 | default: | |
237 | case IEC958_AES0_PRO_FS_NOTID: bits |= 0x00; break; | |
238 | } | |
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; | |
243 | default: | |
244 | case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x03; break; | |
245 | } | |
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; | |
250 | } | |
251 | } | |
252 | return bits; | |
253 | } | |
254 | ||
255 | #endif /* SND_CS8404 */ | |
256 | ||
257 | #endif /* __SOUND_CS8403_H */ |