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1 | /* |
2 | msp3400.h - definition for msp3400 inputs and outputs |
3 | |
4 | Copyright (C) 2006 Hans Verkuil (hverkuil@xs4all.nl) |
5 | |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. |
10 | |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | */ |
20 | |
21 | #ifndef _MSP3400_H_ |
22 | #define _MSP3400_H_ |
23 | |
24 | /* msp3400 routing |
25 | =============== |
26 | |
27 | The msp3400 has a complicated routing scheme with many possible |
28 | combinations. The details are all in the datasheets but I will try |
29 | to give a short description here. |
30 | |
31 | Inputs |
32 | ====== |
33 | |
34 | There are 1) tuner inputs, 2) I2S inputs, 3) SCART inputs. You will have |
35 | to select which tuner input to use and which SCART input to use. The |
36 | selected tuner input, the selected SCART input and all I2S inputs go to |
37 | the DSP (the tuner input first goes through the demodulator). |
38 | |
39 | The DSP handles things like volume, bass/treble, balance, and some chips |
40 | have support for surround sound. It has several outputs: MAIN, AUX, I2S |
41 | and SCART1/2. Each output can select which DSP input to use. So the MAIN |
42 | output can select the tuner input while at the same time the SCART1 output |
43 | uses the I2S input. |
44 | |
45 | Outputs |
46 | ======= |
47 | |
48 | Most DSP outputs are also the outputs of the msp3400. However, the SCART |
49 | outputs of the msp3400 can select which input to use: either the SCART1 or |
50 | SCART2 output from the DSP, or the msp3400 SCART inputs, thus completely |
51 | bypassing the DSP. |
52 | |
53 | Summary |
54 | ======= |
55 | |
56 | So to specify a complete routing scheme for the msp3400 you will have to |
57 | specify in the 'input' arg of the s_routing function: |
58 | |
59 | 1) which tuner input to use |
60 | 2) which SCART input to use |
61 | 3) which DSP input to use for each DSP output |
62 | |
63 | And in the 'output' arg of the s_routing function you specify: |
64 | |
65 | 1) which SCART input to use for each SCART output |
66 | |
67 | Depending on how the msp is wired to the other components you can |
68 | ignore or mute certain inputs or outputs. |
69 | |
70 | Also, depending on the msp version only a subset of the inputs or |
71 | outputs may be present. At the end of this header some tables are |
72 | added containing a list of what is available for each msp version. |
73 | */ |
74 | |
75 | /* Inputs to the DSP unit: two independent selections have to be made: |
76 | 1) the tuner (SIF) input |
77 | 2) the SCART input |
78 | Bits 0-2 are used for the SCART input select, bit 3 is used for the tuner |
79 | input, bits 4-7 are reserved. |
80 | */ |
81 | |
82 | /* SCART input to DSP selection */ |
83 | #define MSP_IN_SCART1 0 /* Pin SC1_IN */ |
84 | #define MSP_IN_SCART2 1 /* Pin SC2_IN */ |
85 | #define MSP_IN_SCART3 2 /* Pin SC3_IN */ |
86 | #define MSP_IN_SCART4 3 /* Pin SC4_IN */ |
87 | #define MSP_IN_MONO 6 /* Pin MONO_IN */ |
88 | #define MSP_IN_MUTE 7 /* Mute DSP input */ |
89 | #define MSP_SCART_TO_DSP(in) (in) |
90 | /* Tuner input to demodulator and DSP selection */ |
91 | #define MSP_IN_TUNER1 0 /* Analog Sound IF input pin ANA_IN1 */ |
92 | #define MSP_IN_TUNER2 1 /* Analog Sound IF input pin ANA_IN2 */ |
93 | #define MSP_TUNER_TO_DSP(in) ((in) << 3) |
94 | |
95 | /* The msp has up to 5 DSP outputs, each output can independently select |
96 | a DSP input. |
97 | |
98 | The DSP outputs are: loudspeaker output (aka MAIN), headphones output |
99 | (aka AUX), SCART1 DA output, SCART2 DA output and an I2S output. |
100 | There also is a quasi-peak detector output, but that is not used by |
101 | this driver and is set to the same input as the loudspeaker output. |
102 | Not all outputs are supported by all msp models. Setting the input |
103 | of an unsupported output will be ignored by the driver. |
104 | |
105 | There are up to 16 DSP inputs to choose from, so each output is |
106 | assigned 4 bits. |
107 | |
108 | Note: the 44x8G can mix two inputs and feed the result back to the |
109 | DSP. This is currently not implemented. Also not implemented is the |
110 | multi-channel capable I2S3 input of the 44x0G. If someone can demonstrate |
111 | a need for one of those features then additional support can be added. */ |
112 | #define MSP_DSP_IN_TUNER 0 /* Tuner DSP input */ |
113 | #define MSP_DSP_IN_SCART 2 /* SCART DSP input */ |
114 | #define MSP_DSP_IN_I2S1 5 /* I2S1 DSP input */ |
115 | #define MSP_DSP_IN_I2S2 6 /* I2S2 DSP input */ |
116 | #define MSP_DSP_IN_I2S3 7 /* I2S3 DSP input */ |
117 | #define MSP_DSP_IN_MAIN_AVC 11 /* MAIN AVC processed DSP input */ |
118 | #define MSP_DSP_IN_MAIN 12 /* MAIN DSP input */ |
119 | #define MSP_DSP_IN_AUX 13 /* AUX DSP input */ |
120 | #define MSP_DSP_TO_MAIN(in) ((in) << 4) |
121 | #define MSP_DSP_TO_AUX(in) ((in) << 8) |
122 | #define MSP_DSP_TO_SCART1(in) ((in) << 12) |
123 | #define MSP_DSP_TO_SCART2(in) ((in) << 16) |
124 | #define MSP_DSP_TO_I2S(in) ((in) << 20) |
125 | |
126 | /* Output SCART select: the SCART outputs can select which input |
127 | to use. */ |
128 | #define MSP_SC_IN_SCART1 0 /* SCART1 input, bypassing the DSP */ |
129 | #define MSP_SC_IN_SCART2 1 /* SCART2 input, bypassing the DSP */ |
130 | #define MSP_SC_IN_SCART3 2 /* SCART3 input, bypassing the DSP */ |
131 | #define MSP_SC_IN_SCART4 3 /* SCART4 input, bypassing the DSP */ |
132 | #define MSP_SC_IN_DSP_SCART1 4 /* DSP SCART1 input */ |
133 | #define MSP_SC_IN_DSP_SCART2 5 /* DSP SCART2 input */ |
134 | #define MSP_SC_IN_MONO 6 /* MONO input, bypassing the DSP */ |
135 | #define MSP_SC_IN_MUTE 7 /* MUTE output */ |
136 | #define MSP_SC_TO_SCART1(in) (in) |
137 | #define MSP_SC_TO_SCART2(in) ((in) << 4) |
138 | |
139 | /* Shortcut macros */ |
140 | #define MSP_INPUT(sc, t, main_aux_src, sc_i2s_src) \ |
141 | (MSP_SCART_TO_DSP(sc) | \ |
142 | MSP_TUNER_TO_DSP(t) | \ |
143 | MSP_DSP_TO_MAIN(main_aux_src) | \ |
144 | MSP_DSP_TO_AUX(main_aux_src) | \ |
145 | MSP_DSP_TO_SCART1(sc_i2s_src) | \ |
146 | MSP_DSP_TO_SCART2(sc_i2s_src) | \ |
147 | MSP_DSP_TO_I2S(sc_i2s_src)) |
148 | #define MSP_INPUT_DEFAULT MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1, \ |
149 | MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER) |
150 | #define MSP_OUTPUT(sc) \ |
151 | (MSP_SC_TO_SCART1(sc) | \ |
152 | MSP_SC_TO_SCART2(sc)) |
153 | /* This equals the RESET position of the msp3400 ACB register */ |
154 | #define MSP_OUTPUT_DEFAULT (MSP_SC_TO_SCART1(MSP_SC_IN_SCART3) | \ |
155 | MSP_SC_TO_SCART2(MSP_SC_IN_DSP_SCART1)) |
156 | |
157 | /* Tuner inputs vs. msp version */ |
158 | /* Chip TUNER_1 TUNER_2 |
159 | ------------------------- |
160 | msp34x0b y y |
161 | msp34x0c y y |
162 | msp34x0d y y |
163 | msp34x5d y n |
164 | msp34x7d y n |
165 | msp34x0g y y |
166 | msp34x1g y y |
167 | msp34x2g y y |
168 | msp34x5g y n |
169 | msp34x7g y n |
170 | msp44x0g y y |
171 | msp44x8g y y |
172 | */ |
173 | |
174 | /* SCART inputs vs. msp version */ |
175 | /* Chip SC1 SC2 SC3 SC4 |
176 | ------------------------- |
177 | msp34x0b y y y n |
178 | msp34x0c y y y n |
179 | msp34x0d y y y y |
180 | msp34x5d y y n n |
181 | msp34x7d y n n n |
182 | msp34x0g y y y y |
183 | msp34x1g y y y y |
184 | msp34x2g y y y y |
185 | msp34x5g y y n n |
186 | msp34x7g y n n n |
187 | msp44x0g y y y y |
188 | msp44x8g y y y y |
189 | */ |
190 | |
191 | /* DSP inputs vs. msp version (tuner and SCART inputs are always available) */ |
192 | /* Chip I2S1 I2S2 I2S3 MAIN_AVC MAIN AUX |
193 | ------------------------------------------ |
194 | msp34x0b y n n n n n |
195 | msp34x0c y y n n n n |
196 | msp34x0d y y n n n n |
197 | msp34x5d y y n n n n |
198 | msp34x7d n n n n n n |
199 | msp34x0g y y n n n n |
200 | msp34x1g y y n n n n |
201 | msp34x2g y y n y y y |
202 | msp34x5g y y n n n n |
203 | msp34x7g n n n n n n |
204 | msp44x0g y y y y y y |
205 | msp44x8g y y y n n n |
206 | */ |
207 | |
208 | /* DSP outputs vs. msp version */ |
209 | /* Chip MAIN AUX SCART1 SCART2 I2S |
210 | ------------------------------------ |
211 | msp34x0b y y y n y |
212 | msp34x0c y y y n y |
213 | msp34x0d y y y y y |
214 | msp34x5d y n y n y |
215 | msp34x7d y n y n n |
216 | msp34x0g y y y y y |
217 | msp34x1g y y y y y |
218 | msp34x2g y y y y y |
219 | msp34x5g y n y n y |
220 | msp34x7g y n y n n |
221 | msp44x0g y y y y y |
222 | msp44x8g y y y y y |
223 | */ |
224 | |
225 | #endif /* MSP3400_H */ |
226 | |
227 |
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