1// SPDX-License-Identifier: GPL-2.0
2// dice-weiss.c - a part of driver for DICE based devices
3//
4// Copyright (c) 2023 Rolf Anderegg and Michele Perrone
5
6#include "dice.h"
7
8struct dice_weiss_spec {
9	unsigned int tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
10	unsigned int rx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
11};
12
13// Weiss DAC202: 192kHz 2-channel DAC
14static const struct dice_weiss_spec dac202 = {
15	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
16	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
17};
18
19// Weiss MAN301: 192kHz 2-channel music archive network player
20static const struct dice_weiss_spec man301 = {
21	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
22	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
23};
24
25// Weiss INT202: 192kHz unidirectional 2-channel digital Firewire nterface
26static const struct dice_weiss_spec int202 = {
27	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
28	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
29};
30
31// Weiss INT203: 192kHz bidirectional 2-channel digital Firewire nterface
32static const struct dice_weiss_spec int203 = {
33	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
34	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
35};
36
37// Weiss ADC2: 192kHz A/D converter with microphone preamps and line nputs
38static const struct dice_weiss_spec adc2 = {
39	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
40	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
41};
42
43// Weiss DAC2/Minerva: 192kHz 2-channel DAC
44static const struct dice_weiss_spec dac2_minerva = {
45	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
46	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
47};
48
49// Weiss Vesta: 192kHz 2-channel Firewire to AES/EBU interface
50static const struct dice_weiss_spec vesta = {
51	.tx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
52	.rx_pcm_chs = {{2, 2, 2}, {0, 0, 0} },
53};
54
55// Weiss AFI1: 192kHz 24-channel Firewire to ADAT or AES/EBU interface
56static const struct dice_weiss_spec afi1 = {
57	.tx_pcm_chs = {{24, 16, 8}, {0, 0, 0} },
58	.rx_pcm_chs = {{24, 16, 8}, {0, 0, 0} },
59};
60
61int snd_dice_detect_weiss_formats(struct snd_dice *dice)
62{
63	static const struct {
64		u32 model_id;
65		const struct dice_weiss_spec *spec;
66	} *entry, entries[] = {
67		{0x000007, &dac202},
68		{0x000008, &dac202}, // Maya edition: same audio I/O as DAC202.
69		{0x000006, &int202},
70		{0x00000a, &int203},
71		{0x00000b, &man301},
72		{0x000001, &adc2},
73		{0x000003, &dac2_minerva},
74		{0x000002, &vesta},
75		{0x000004, &afi1},
76	};
77	struct fw_csr_iterator it;
78	int key, val, model_id;
79	int i;
80
81	model_id = 0;
82	fw_csr_iterator_init(&it, dice->unit->directory);
83	while (fw_csr_iterator_next(&it, &key, &val)) {
84		if (key == CSR_MODEL) {
85			model_id = val;
86			break;
87		}
88	}
89
90	for (i = 0; i < ARRAY_SIZE(entries); ++i) {
91		entry = entries + i;
92		if (entry->model_id == model_id)
93			break;
94	}
95	if (i == ARRAY_SIZE(entries))
96		return -ENODEV;
97
98	memcpy(dice->tx_pcm_chs, entry->spec->tx_pcm_chs,
99	       MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
100	memcpy(dice->rx_pcm_chs, entry->spec->rx_pcm_chs,
101	       MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
102
103	return 0;
104}
105