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 #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
  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 }