// SPDX-License-Identifier: GPL-2.0
// dice-weiss.c - a part of driver for DICE based devices
//
// Copyright (c) 2023 Rolf Anderegg and Michele Perrone

#include "dice.h"

struct dice_weiss_spec {
        unsigned int tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
        unsigned int rx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
};

// Weiss DAC202: 192kHz 2-channel DAC
static const struct dice_weiss_spec dac202 = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss MAN301: 192kHz 2-channel music archive network player
static const struct dice_weiss_spec man301 = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss INT202: 192kHz unidirectional 2-channel digital Firewire nterface
static const struct dice_weiss_spec int202 = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss INT203: 192kHz bidirectional 2-channel digital Firewire nterface
static const struct dice_weiss_spec int203 = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss ADC2: 192kHz A/D converter with microphone preamps and line nputs
static const struct dice_weiss_spec adc2 = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss DAC2/Minerva: 192kHz 2-channel DAC
static const struct dice_weiss_spec dac2_minerva = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss Vesta: 192kHz 2-channel Firewire to AES/EBU interface
static const struct dice_weiss_spec vesta = {
        .tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
        .rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
};

// Weiss AFI1: 192kHz 24-channel Firewire to ADAT or AES/EBU interface
static const struct dice_weiss_spec afi1 = {
        .tx_pcm_chs = {{24, 16, 8}, {0, 0, 0} },
        .rx_pcm_chs = {{24, 16, 8}, {0, 0, 0} },
};

int snd_dice_detect_weiss_formats(struct snd_dice *dice)
{
        static const struct {
                u32 model_id;
                const struct dice_weiss_spec *spec;
        } *entry, entries[] = {
                {0x000007, &dac202},
                {0x000008, &dac202}, // Maya edition: same audio I/O as DAC202.
                {0x000006, &int202},
                {0x00000a, &int203},
                {0x00000b, &man301},
                {0x000001, &adc2},
                {0x000003, &dac2_minerva},
                {0x000002, &vesta},
                {0x000004, &afi1},
        };
        struct fw_csr_iterator it;
        int key, val, model_id;
        int i;

        model_id = 0;
        fw_csr_iterator_init(&it, dice->unit->directory);
        while (fw_csr_iterator_next(&it, &key, &val)) {
                if (key == CSR_MODEL) {
                        model_id = val;
                        break;
                }
        }

        for (i = 0; i < ARRAY_SIZE(entries); ++i) {
                entry = entries + i;
                if (entry->model_id == model_id)
                        break;
        }
        if (i == ARRAY_SIZE(entries))
                return -ENODEV;

        memcpy(dice->tx_pcm_chs, entry->spec->tx_pcm_chs,
               MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
        memcpy(dice->rx_pcm_chs, entry->spec->rx_pcm_chs,
               MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));

        return 0;
}