1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * dice-alesis.c - a part of driver for DICE based devices
4  *
5  * Copyright (c) 2018 Takashi Sakamoto
6  */
7 
8 #include "dice.h"
9 
10 static const unsigned int
11 alesis_io14_tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT] = {
12 	{6, 6, 4},	/* Tx0 = Analog + S/PDIF. */
13 	{8, 4, 0},	/* Tx1 = ADAT1. */
14 };
15 
16 static const unsigned int
17 alesis_io26_tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT] = {
18 	{10, 10, 8},	/* Tx0 = Analog + S/PDIF. */
19 	{16, 8, 0},	/* Tx1 = ADAT1 + ADAT2. */
20 };
21 
22 int snd_dice_detect_alesis_formats(struct snd_dice *dice)
23 {
24 	__be32 reg;
25 	u32 data;
26 	int i;
27 	int err;
28 
29 	err = snd_dice_transaction_read_tx(dice, TX_NUMBER_AUDIO, &reg,
30 					   sizeof(reg));
31 	if (err < 0)
32 		return err;
33 	data = be32_to_cpu(reg);
34 
35 	if (data == 4 || data == 6) {
36 		memcpy(dice->tx_pcm_chs, alesis_io14_tx_pcm_chs,
37 				MAX_STREAMS * SND_DICE_RATE_MODE_COUNT *
38 				sizeof(unsigned int));
39 	} else {
40 		memcpy(dice->tx_pcm_chs, alesis_io26_tx_pcm_chs,
41 				MAX_STREAMS * SND_DICE_RATE_MODE_COUNT *
42 				sizeof(unsigned int));
43 	}
44 
45 	for (i = 0; i < SND_DICE_RATE_MODE_COUNT; ++i)
46 		dice->rx_pcm_chs[0][i] = 8;
47 
48 	dice->tx_midi_ports[0] = 1;
49 	dice->rx_midi_ports[0] = 1;
50 
51 	return 0;
52 }
53