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