1 // SPDX-License-Identifier: GPL-2.0
2 // dice-presonus.c - a part of driver for DICE based devices
3 //
4 // Copyright (c) 2019 Takashi Sakamoto
5 
6 #include "dice.h"
7 
8 struct dice_presonus_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 	bool has_midi;
12 };
13 
14 static const struct dice_presonus_spec dice_presonus_firesutio = {
15 	.tx_pcm_chs = {{16, 16, 0}, {10, 2, 0} },
16 	.rx_pcm_chs = {{16, 16, 0}, {10, 2, 0} },
17 	.has_midi = true,
18 };
19 
snd_dice_detect_presonus_formats(struct snd_dice * dice)20 int snd_dice_detect_presonus_formats(struct snd_dice *dice)
21 {
22 	static const struct {
23 		u32 model_id;
24 		const struct dice_presonus_spec *spec;
25 	} *entry, entries[] = {
26 		{0x000008, &dice_presonus_firesutio},
27 	};
28 	struct fw_csr_iterator it;
29 	int key, val, model_id;
30 	int i;
31 
32 	model_id = 0;
33 	fw_csr_iterator_init(&it, dice->unit->directory);
34 	while (fw_csr_iterator_next(&it, &key, &val)) {
35 		if (key == CSR_MODEL) {
36 			model_id = val;
37 			break;
38 		}
39 	}
40 
41 	for (i = 0; i < ARRAY_SIZE(entries); ++i) {
42 		entry = entries + i;
43 		if (entry->model_id == model_id)
44 			break;
45 	}
46 	if (i == ARRAY_SIZE(entries))
47 		return -ENODEV;
48 
49 	memcpy(dice->tx_pcm_chs, entry->spec->tx_pcm_chs,
50 	       MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
51 	memcpy(dice->rx_pcm_chs, entry->spec->rx_pcm_chs,
52 	       MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
53 
54 	if (entry->spec->has_midi) {
55 		dice->tx_midi_ports[0] = 1;
56 		dice->rx_midi_ports[0] = 1;
57 	}
58 
59 	return 0;
60 }
61