Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: c27f7763962dd8bcb94643d6f38072dd42a9562d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef __SOUND_CS8403_H
#define __SOUND_CS8403_H

/*
 *  Routines for Cirrus Logic CS8403/CS8404A IEC958 (S/PDIF) Transmitter
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
 *		     Takashi Iwai <tiwai@suse.de>
 */

#ifdef SND_CS8403

#ifndef SND_CS8403_DECL
#define SND_CS8403_DECL static
#endif
#ifndef SND_CS8403_DECODE
#define SND_CS8403_DECODE snd_cs8403_decode_spdif_bits
#endif
#ifndef SND_CS8403_ENCODE
#define SND_CS8403_ENCODE snd_cs8403_encode_spdif_bits
#endif


SND_CS8403_DECL void SND_CS8403_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)
{
	if (bits & 0x01) {	/* consumer */
		if (!(bits & 0x02))
			diga->status[0] |= IEC958_AES0_NONAUDIO;
		if (!(bits & 0x08))
			diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
		switch (bits & 0x10) {
		case 0x10: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE; break;
		case 0x00: diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015; break;
		}
		if (!(bits & 0x80))
			diga->status[1] |= IEC958_AES1_CON_ORIGINAL;
		switch (bits & 0x60) {
		case 0x00: diga->status[1] |= IEC958_AES1_CON_MAGNETIC_ID; break;
		case 0x20: diga->status[1] |= IEC958_AES1_CON_DIGDIGCONV_ID; break;
		case 0x40: diga->status[1] |= IEC958_AES1_CON_LASEROPT_ID; break;
		case 0x60: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;
		}
		switch (bits & 0x06) {
		case 0x00: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;
		case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;
		case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;
		}
	} else {
		diga->status[0] = IEC958_AES0_PROFESSIONAL;
		switch (bits & 0x18) {
		case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;
		case 0x10: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;
		case 0x08: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;
		case 0x18: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
		}
		switch (bits & 0x60) {
		case 0x20: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;
		case 0x40: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;
		case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;
		case 0x60: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;
		}
		if (bits & 0x80)
			diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;
	}
}

SND_CS8403_DECL unsigned char SND_CS8403_ENCODE(struct snd_aes_iec958 *diga)
{
	unsigned char bits;

	if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {
		bits = 0x01;	/* consumer mode */
		if (diga->status[0] & IEC958_AES0_NONAUDIO)
			bits &= ~0x02;
		else
			bits |= 0x02;
		if (diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT)
			bits &= ~0x08;
		else
			bits |= 0x08;
		switch (diga->status[0] & IEC958_AES0_CON_EMPHASIS) {
		default:
		case IEC958_AES0_CON_EMPHASIS_NONE: bits |= 0x10; break;
		case IEC958_AES0_CON_EMPHASIS_5015: bits |= 0x00; break;
		}
		if (diga->status[1] & IEC958_AES1_CON_ORIGINAL)
			bits &= ~0x80;
		else
			bits |= 0x80;
		if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)
			bits |= 0x60;
		else {
			switch(diga->status[1] & IEC958_AES1_CON_MAGNETIC_MASK) {
			case IEC958_AES1_CON_MAGNETIC_ID:
				bits |= 0x00; break;
			case IEC958_AES1_CON_DIGDIGCONV_ID:
				bits |= 0x20; break;
			default:
			case IEC958_AES1_CON_LASEROPT_ID:
				bits |= 0x40; break;
			}
		}
		switch (diga->status[3] & IEC958_AES3_CON_FS) {
		default:
		case IEC958_AES3_CON_FS_44100: bits |= 0x00; break;
		case IEC958_AES3_CON_FS_48000: bits |= 0x02; break;
		case IEC958_AES3_CON_FS_32000: bits |= 0x04; break;
		}
	} else {
		bits = 0x00;	/* professional mode */
		if (diga->status[0] & IEC958_AES0_NONAUDIO)
			bits &= ~0x02;
		else
			bits |= 0x02;
		/* CHECKME: I'm not sure about the bit order in val here */
		switch (diga->status[0] & IEC958_AES0_PRO_FS) {
		case IEC958_AES0_PRO_FS_32000:	bits |= 0x00; break;
		case IEC958_AES0_PRO_FS_44100:	bits |= 0x10; break;	/* 44.1kHz */
		case IEC958_AES0_PRO_FS_48000:	bits |= 0x08; break;	/* 48kHz */
		default:
		case IEC958_AES0_PRO_FS_NOTID: bits |= 0x18; break;
		}
		switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {
		case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x20; break;
		case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x40; break;
		case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;
		default:
		case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x60; break;
		}
		switch (diga->status[1] & IEC958_AES1_PRO_MODE) {
		case IEC958_AES1_PRO_MODE_TWO:
		case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;
		default: bits |= 0x80; break;
		}
	}
	return bits;
}

#endif /* SND_CS8403 */

#ifdef SND_CS8404

#ifndef SND_CS8404_DECL
#define SND_CS8404_DECL static
#endif
#ifndef SND_CS8404_DECODE
#define SND_CS8404_DECODE snd_cs8404_decode_spdif_bits
#endif
#ifndef SND_CS8404_ENCODE
#define SND_CS8404_ENCODE snd_cs8404_encode_spdif_bits
#endif


SND_CS8404_DECL void SND_CS8404_DECODE(struct snd_aes_iec958 *diga, unsigned char bits)
{
	if (bits & 0x10) {	/* consumer */
		if (!(bits & 0x20))
			diga->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
		if (!(bits & 0x40))
			diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;
		if (!(bits & 0x80))
			diga->status[1] |= IEC958_AES1_CON_ORIGINAL;
		switch (bits & 0x03) {
		case 0x00: diga->status[1] |= IEC958_AES1_CON_DAT; break;
		case 0x03: diga->status[1] |= IEC958_AES1_CON_GENERAL; break;
		}
		switch (bits & 0x06) {
		case 0x02: diga->status[3] |= IEC958_AES3_CON_FS_32000; break;
		case 0x04: diga->status[3] |= IEC958_AES3_CON_FS_48000; break;
		case 0x06: diga->status[3] |= IEC958_AES3_CON_FS_44100; break;
		}
	} else {
		diga->status[0] = IEC958_AES0_PROFESSIONAL;
		if (!(bits & 0x04))
			diga->status[0] |= IEC958_AES0_NONAUDIO;
		switch (bits & 0x60) {
		case 0x00: diga->status[0] |= IEC958_AES0_PRO_FS_32000; break;
		case 0x40: diga->status[0] |= IEC958_AES0_PRO_FS_44100; break;
		case 0x20: diga->status[0] |= IEC958_AES0_PRO_FS_48000; break;
		case 0x60: diga->status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
		}
		switch (bits & 0x03) {
		case 0x02: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE; break;
		case 0x01: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015; break;
		case 0x00: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT; break;
		case 0x03: diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_NOTID; break;
		}
		if (!(bits & 0x80))
			diga->status[1] |= IEC958_AES1_PRO_MODE_STEREOPHONIC;
	}
}

SND_CS8404_DECL unsigned char SND_CS8404_ENCODE(struct snd_aes_iec958 *diga)
{
	unsigned char bits;

	if (!(diga->status[0] & IEC958_AES0_PROFESSIONAL)) {
		bits = 0x10;	/* consumer mode */
		if (!(diga->status[0] & IEC958_AES0_CON_NOT_COPYRIGHT))
			bits |= 0x20;
		if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_NONE)
			bits |= 0x40;
		if (!(diga->status[1] & IEC958_AES1_CON_ORIGINAL))
			bits |= 0x80;
		if ((diga->status[1] & IEC958_AES1_CON_CATEGORY) == IEC958_AES1_CON_GENERAL)
			bits |= 0x03;
		switch (diga->status[3] & IEC958_AES3_CON_FS) {
		default:
		case IEC958_AES3_CON_FS_44100: bits |= 0x06; break;
		case IEC958_AES3_CON_FS_48000: bits |= 0x04; break;
		case IEC958_AES3_CON_FS_32000: bits |= 0x02; break;
		}
	} else {
		bits = 0x00;	/* professional mode */
		if (!(diga->status[0] & IEC958_AES0_NONAUDIO))
			bits |= 0x04;
		switch (diga->status[0] & IEC958_AES0_PRO_FS) {
		case IEC958_AES0_PRO_FS_32000:	bits |= 0x00; break;
		case IEC958_AES0_PRO_FS_44100:	bits |= 0x40; break;	/* 44.1kHz */
		case IEC958_AES0_PRO_FS_48000:	bits |= 0x20; break;	/* 48kHz */
		default:
		case IEC958_AES0_PRO_FS_NOTID:	bits |= 0x00; break;
		}
		switch (diga->status[0] & IEC958_AES0_PRO_EMPHASIS) {
		case IEC958_AES0_PRO_EMPHASIS_NONE: bits |= 0x02; break;
		case IEC958_AES0_PRO_EMPHASIS_5015: bits |= 0x01; break;
		case IEC958_AES0_PRO_EMPHASIS_CCITT: bits |= 0x00; break;
		default:
		case IEC958_AES0_PRO_EMPHASIS_NOTID: bits |= 0x03; break;
		}
		switch (diga->status[1] & IEC958_AES1_PRO_MODE) {
		case IEC958_AES1_PRO_MODE_TWO:
		case IEC958_AES1_PRO_MODE_STEREOPHONIC: bits |= 0x00; break;
		default: bits |= 0x80; break;
		}
	}
	return bits;
}

#endif /* SND_CS8404 */

#endif /* __SOUND_CS8403_H */