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1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
---|---|
2 | #ifndef __SOUND_CS8403_H |
3 | #define __SOUND_CS8403_H |
4 | |
5 | /* |
6 | * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter |
7 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, |
8 | * Takashi Iwai <tiwai@suse.de> |
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 | |
24 | SND_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 | |
67 | SND_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 | 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 | |
154 | SND_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 | |
193 | SND_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 |
Warning: This file is not a C or C++ file. It does not have highlighting.