LXR linux/sound/firewire/dice/dice-presonus.c

   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// Licensed under the terms of the GNU General Public License, version 2.
   7
   8#include "dice.h"
   9
  10struct dice_presonus_spec {
  11        unsigned int tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
  12        unsigned int rx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT];
  13        bool has_midi;
  14};
  15
  16static const struct dice_presonus_spec dice_presonus_firesutio = {
  17        .tx_pcm_chs = {{16, 16, 0}, {10, 2, 0} },
  18        .rx_pcm_chs = {{16, 16, 0}, {10, 2, 0} },
  19        .has_midi = true,
  20};
  21
  22int snd_dice_detect_presonus_formats(struct snd_dice *dice)
  23{
  24        static const struct {
  25                u32 model_id;
  26                const struct dice_presonus_spec *spec;
  27        } *entry, entries[] = {
  28                {0x000008, &dice_presonus_firesutio},
  29        };
  30        struct fw_csr_iterator it;
  31        int key, val, model_id;
  32        int i;
  33
  34        model_id = 0;
  35        fw_csr_iterator_init(&it, dice->unit->directory);
  36        while (fw_csr_iterator_next(&it, &key, &val)) {
  37                if (key == CSR_MODEL) {
  38                        model_id = val;
  39                        break;
  40                }
  41        }
  42
  43        for (i = 0; i < ARRAY_SIZE(entries); ++i) {
  44                entry = entries + i;
  45                if (entry->model_id == model_id)
  46                        break;
  47        }
  48        if (i == ARRAY_SIZE(entries))
  49                return -ENODEV;
  50
  51        memcpy(dice->tx_pcm_chs, entry->spec->tx_pcm_chs,
  52               MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
  53        memcpy(dice->rx_pcm_chs, entry->spec->rx_pcm_chs,
  54               MAX_STREAMS * SND_DICE_RATE_MODE_COUNT * sizeof(unsigned int));
  55
  56        if (entry->spec->has_midi) {
  57                dice->tx_midi_ports[0] = 1;
  58                dice->rx_midi_ports[0] = 1;
  59        }
  60
  61        return 0;
  62}
  63