Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __SOUND_CS8403_H |
| 2 | #define __SOUND_CS8403_H |
| 3 | |
| 4 | /* |
| 5 | * Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame^] | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Takashi Iwai | 97f02e0 | 2005-11-17 14:17:19 +0100 | [diff] [blame] | 39 | SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Takashi Iwai | 97f02e0 | 2005-11-17 14:17:19 +0100 | [diff] [blame] | 82 | SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Takashi Iwai | 97f02e0 | 2005-11-17 14:17:19 +0100 | [diff] [blame] | 169 | SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Takashi Iwai | 97f02e0 | 2005-11-17 14:17:19 +0100 | [diff] [blame] | 208 | SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |