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1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | #ifndef __SOUND_CS8403_H |
3 | #define __SOUND_CS8403_H | |
4 | ||
5 | /* | |
6 | * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter | |
c1017a4c | 7 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, |
1da177e4 | 8 | * Takashi Iwai <tiwai@suse.de> |
1da177e4 LT |
9 | */ |
10 | ||
11 | #ifdef SND_CS8403 | |
12 | ||
13 | #ifndef SND_CS8403_DECL | |
14 | #define SND_CS8403_DECL static | |
15 | #endif | |
16 | #ifndef SND_CS8403_DECODE | |
17 | #define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits | |
18 | #endif | |
19 | #ifndef SND_CS8403_ENCODE | |
20 | #define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits | |
21 | #endif | |
22 | ||
23 | ||
97f02e05 | 24 | SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
1da177e4 LT |
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 | ||
97f02e05 | 67 | SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga) |
1da177e4 LT |
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 | else | |
76 | bits |= 0x02; | |
77 | if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT) | |
78 | bits &= ~0x08; | |
79 | else | |
80 | 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 | else | |
89 | 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 | else | |
114 | 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_CS8404 | |
142 | ||
143 | #ifndef SND_CS8404_DECL | |
144 | #define SND_CS8404_DECL static | |
145 | #endif | |
146 | #ifndef SND_CS8404_DECODE | |
147 | #define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits | |
148 | #endif | |
149 | #ifndef SND_CS8404_ENCODE | |
150 | #define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits | |
151 | #endif | |
152 | ||
153 | ||
97f02e05 | 154 | SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
1da177e4 LT |
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 | ||
97f02e05 | 193 | SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga) |
1da177e4 LT |
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 */ |