| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | msp3400.h - definition for msp3400 inputs and outputs |
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| 4 | |
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| 5 | Copyright (C) 2006 Hans Verkuil (hverkuil@xs4all.nl) |
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| 6 | |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef _MSP3400_H_ |
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| 10 | #define _MSP3400_H_ |
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| 11 | |
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| 12 | /* msp3400 routing |
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| 13 | =============== |
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| 14 | |
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| 15 | The msp3400 has a complicated routing scheme with many possible |
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| 16 | combinations. The details are all in the datasheets but I will try |
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| 17 | to give a short description here. |
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| 18 | |
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| 19 | Inputs |
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| 20 | ====== |
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| 21 | |
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| 22 | There are 1) tuner inputs, 2) I2S inputs, 3) SCART inputs. You will have |
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| 23 | to select which tuner input to use and which SCART input to use. The |
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| 24 | selected tuner input, the selected SCART input and all I2S inputs go to |
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| 25 | the DSP (the tuner input first goes through the demodulator). |
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| 26 | |
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| 27 | The DSP handles things like volume, bass/treble, balance, and some chips |
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| 28 | have support for surround sound. It has several outputs: MAIN, AUX, I2S |
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| 29 | and SCART1/2. Each output can select which DSP input to use. So the MAIN |
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| 30 | output can select the tuner input while at the same time the SCART1 output |
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| 31 | uses the I2S input. |
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| 32 | |
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| 33 | Outputs |
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| 34 | ======= |
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| 35 | |
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| 36 | Most DSP outputs are also the outputs of the msp3400. However, the SCART |
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| 37 | outputs of the msp3400 can select which input to use: either the SCART1 or |
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| 38 | SCART2 output from the DSP, or the msp3400 SCART inputs, thus completely |
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| 39 | bypassing the DSP. |
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| 40 | |
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| 41 | Summary |
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| 42 | ======= |
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| 43 | |
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| 44 | So to specify a complete routing scheme for the msp3400 you will have to |
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| 45 | specify in the 'input' arg of the s_routing function: |
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| 46 | |
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| 47 | 1) which tuner input to use |
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| 48 | 2) which SCART input to use |
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| 49 | 3) which DSP input to use for each DSP output |
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| 50 | |
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| 51 | And in the 'output' arg of the s_routing function you specify: |
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| 52 | |
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| 53 | 1) which SCART input to use for each SCART output |
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| 54 | |
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| 55 | Depending on how the msp is wired to the other components you can |
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| 56 | ignore or mute certain inputs or outputs. |
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| 57 | |
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| 58 | Also, depending on the msp version only a subset of the inputs or |
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| 59 | outputs may be present. At the end of this header some tables are |
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| 60 | added containing a list of what is available for each msp version. |
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| 61 | */ |
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| 62 | |
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| 63 | /* Inputs to the DSP unit: two independent selections have to be made: |
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| 64 | 1) the tuner (SIF) input |
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| 65 | 2) the SCART input |
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| 66 | Bits 0-2 are used for the SCART input select, bit 3 is used for the tuner |
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| 67 | input, bits 4-7 are reserved. |
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| 68 | */ |
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| 69 | |
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| 70 | /* SCART input to DSP selection */ |
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| 71 | #define MSP_IN_SCART1 0 /* Pin SC1_IN */ |
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| 72 | #define MSP_IN_SCART2 1 /* Pin SC2_IN */ |
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| 73 | #define MSP_IN_SCART3 2 /* Pin SC3_IN */ |
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| 74 | #define MSP_IN_SCART4 3 /* Pin SC4_IN */ |
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| 75 | #define MSP_IN_MONO 6 /* Pin MONO_IN */ |
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| 76 | #define MSP_IN_MUTE 7 /* Mute DSP input */ |
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| 77 | #define MSP_SCART_TO_DSP(in) (in) |
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| 78 | /* Tuner input to demodulator and DSP selection */ |
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| 79 | #define MSP_IN_TUNER1 0 /* Analog Sound IF input pin ANA_IN1 */ |
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| 80 | #define MSP_IN_TUNER2 1 /* Analog Sound IF input pin ANA_IN2 */ |
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| 81 | #define MSP_TUNER_TO_DSP(in) ((in) << 3) |
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| 82 | |
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| 83 | /* The msp has up to 5 DSP outputs, each output can independently select |
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| 84 | a DSP input. |
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| 85 | |
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| 86 | The DSP outputs are: loudspeaker output (aka MAIN), headphones output |
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| 87 | (aka AUX), SCART1 DA output, SCART2 DA output and an I2S output. |
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| 88 | There also is a quasi-peak detector output, but that is not used by |
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| 89 | this driver and is set to the same input as the loudspeaker output. |
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| 90 | Not all outputs are supported by all msp models. Setting the input |
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| 91 | of an unsupported output will be ignored by the driver. |
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| 92 | |
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| 93 | There are up to 16 DSP inputs to choose from, so each output is |
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| 94 | assigned 4 bits. |
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| 95 | |
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| 96 | Note: the 44x8G can mix two inputs and feed the result back to the |
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| 97 | DSP. This is currently not implemented. Also not implemented is the |
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| 98 | multi-channel capable I2S3 input of the 44x0G. If someone can demonstrate |
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| 99 | a need for one of those features then additional support can be added. */ |
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| 100 | #define MSP_DSP_IN_TUNER 0 /* Tuner DSP input */ |
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| 101 | #define MSP_DSP_IN_SCART 2 /* SCART DSP input */ |
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| 102 | #define MSP_DSP_IN_I2S1 5 /* I2S1 DSP input */ |
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| 103 | #define MSP_DSP_IN_I2S2 6 /* I2S2 DSP input */ |
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| 104 | #define MSP_DSP_IN_I2S3 7 /* I2S3 DSP input */ |
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| 105 | #define MSP_DSP_IN_MAIN_AVC 11 /* MAIN AVC processed DSP input */ |
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| 106 | #define MSP_DSP_IN_MAIN 12 /* MAIN DSP input */ |
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| 107 | #define MSP_DSP_IN_AUX 13 /* AUX DSP input */ |
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| 108 | #define MSP_DSP_TO_MAIN(in) ((in) << 4) |
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| 109 | #define MSP_DSP_TO_AUX(in) ((in) << 8) |
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| 110 | #define MSP_DSP_TO_SCART1(in) ((in) << 12) |
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| 111 | #define MSP_DSP_TO_SCART2(in) ((in) << 16) |
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| 112 | #define MSP_DSP_TO_I2S(in) ((in) << 20) |
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| 113 | |
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| 114 | /* Output SCART select: the SCART outputs can select which input |
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| 115 | to use. */ |
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| 116 | #define MSP_SC_IN_SCART1 0 /* SCART1 input, bypassing the DSP */ |
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| 117 | #define MSP_SC_IN_SCART2 1 /* SCART2 input, bypassing the DSP */ |
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| 118 | #define MSP_SC_IN_SCART3 2 /* SCART3 input, bypassing the DSP */ |
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| 119 | #define MSP_SC_IN_SCART4 3 /* SCART4 input, bypassing the DSP */ |
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| 120 | #define MSP_SC_IN_DSP_SCART1 4 /* DSP SCART1 input */ |
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| 121 | #define MSP_SC_IN_DSP_SCART2 5 /* DSP SCART2 input */ |
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| 122 | #define MSP_SC_IN_MONO 6 /* MONO input, bypassing the DSP */ |
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| 123 | #define MSP_SC_IN_MUTE 7 /* MUTE output */ |
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| 124 | #define MSP_SC_TO_SCART1(in) (in) |
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| 125 | #define MSP_SC_TO_SCART2(in) ((in) << 4) |
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| 126 | |
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| 127 | /* Shortcut macros */ |
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| 128 | #define MSP_INPUT(sc, t, main_aux_src, sc_i2s_src) \ |
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| 129 | (MSP_SCART_TO_DSP(sc) | \ |
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| 130 | MSP_TUNER_TO_DSP(t) | \ |
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| 131 | MSP_DSP_TO_MAIN(main_aux_src) | \ |
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| 132 | MSP_DSP_TO_AUX(main_aux_src) | \ |
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| 133 | MSP_DSP_TO_SCART1(sc_i2s_src) | \ |
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| 134 | MSP_DSP_TO_SCART2(sc_i2s_src) | \ |
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| 135 | MSP_DSP_TO_I2S(sc_i2s_src)) |
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| 136 | #define MSP_INPUT_DEFAULT MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1, \ |
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| 137 | MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER) |
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| 138 | #define MSP_OUTPUT(sc) \ |
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| 139 | (MSP_SC_TO_SCART1(sc) | \ |
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| 140 | MSP_SC_TO_SCART2(sc)) |
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| 141 | /* This equals the RESET position of the msp3400 ACB register */ |
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| 142 | #define MSP_OUTPUT_DEFAULT (MSP_SC_TO_SCART1(MSP_SC_IN_SCART3) | \ |
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| 143 | MSP_SC_TO_SCART2(MSP_SC_IN_DSP_SCART1)) |
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| 144 | |
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| 145 | /* Tuner inputs vs. msp version */ |
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| 146 | /* Chip TUNER_1 TUNER_2 |
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| 147 | ------------------------- |
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| 148 | msp34x0b y y |
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| 149 | msp34x0c y y |
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| 150 | msp34x0d y y |
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| 151 | msp34x5d y n |
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| 152 | msp34x7d y n |
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| 153 | msp34x0g y y |
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| 154 | msp34x1g y y |
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| 155 | msp34x2g y y |
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| 156 | msp34x5g y n |
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| 157 | msp34x7g y n |
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| 158 | msp44x0g y y |
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| 159 | msp44x8g y y |
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| 160 | */ |
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| 161 | |
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| 162 | /* SCART inputs vs. msp version */ |
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| 163 | /* Chip SC1 SC2 SC3 SC4 |
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| 164 | ------------------------- |
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| 165 | msp34x0b y y y n |
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| 166 | msp34x0c y y y n |
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| 167 | msp34x0d y y y y |
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| 168 | msp34x5d y y n n |
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| 169 | msp34x7d y n n n |
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| 170 | msp34x0g y y y y |
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| 171 | msp34x1g y y y y |
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| 172 | msp34x2g y y y y |
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| 173 | msp34x5g y y n n |
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| 174 | msp34x7g y n n n |
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| 175 | msp44x0g y y y y |
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| 176 | msp44x8g y y y y |
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| 177 | */ |
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| 178 | |
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| 179 | /* DSP inputs vs. msp version (tuner and SCART inputs are always available) */ |
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| 180 | /* Chip I2S1 I2S2 I2S3 MAIN_AVC MAIN AUX |
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| 181 | ------------------------------------------ |
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| 182 | msp34x0b y n n n n n |
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| 183 | msp34x0c y y n n n n |
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| 184 | msp34x0d y y n n n n |
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| 185 | msp34x5d y y n n n n |
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| 186 | msp34x7d n n n n n n |
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| 187 | msp34x0g y y n n n n |
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| 188 | msp34x1g y y n n n n |
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| 189 | msp34x2g y y n y y y |
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| 190 | msp34x5g y y n n n n |
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| 191 | msp34x7g n n n n n n |
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| 192 | msp44x0g y y y y y y |
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| 193 | msp44x8g y y y n n n |
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| 194 | */ |
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| 195 | |
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| 196 | /* DSP outputs vs. msp version */ |
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| 197 | /* Chip MAIN AUX SCART1 SCART2 I2S |
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| 198 | ------------------------------------ |
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| 199 | msp34x0b y y y n y |
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| 200 | msp34x0c y y y n y |
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| 201 | msp34x0d y y y y y |
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| 202 | msp34x5d y n y n y |
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| 203 | msp34x7d y n y n n |
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| 204 | msp34x0g y y y y y |
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| 205 | msp34x1g y y y y y |
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| 206 | msp34x2g y y y y y |
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| 207 | msp34x5g y n y n y |
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| 208 | msp34x7g y n y n n |
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| 209 | msp44x0g y y y y y |
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| 210 | msp44x8g y y y y y |
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| 211 | */ |
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| 212 | |
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| 213 | #endif /* MSP3400_H */ |
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| 214 | |
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