sound/firewire/motu/motu-proc.c

   1 /*
   2  * motu-proc.c - a part of driver for MOTU FireWire series
   3  *
   4  * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #include "./motu.h"
  10
  11 static const char *const clock_names[] = {
  12         [SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
  13         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
  14         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
  15         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
  16         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
  17         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
  18         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
  19         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
  20         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PDIF on coaxial interface",
  21         [SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
  22         [SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
  23 };
  24
  25 static void proc_read_clock(struct snd_info_entry *entry,
  26                             struct snd_info_buffer *buffer)
  27 {
  28
  29         struct snd_motu *motu = entry->private_data;
  30         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  31         unsigned int rate;
  32         enum snd_motu_clock_source source;
  33
  34         if (protocol->get_clock_rate(motu, &rate) < 0)
  35                 return;
  36         if (protocol->get_clock_source(motu, &source) < 0)
  37                 return;
  38
  39         snd_iprintf(buffer, "Rate:\t%d\n", rate);
  40         snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
  41 }
  42
  43 static void proc_read_format(struct snd_info_entry *entry,
  44                              struct snd_info_buffer *buffer)
  45 {
  46         struct snd_motu *motu = entry->private_data;
  47         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  48         unsigned int mode;
  49         struct snd_motu_packet_format *formats;
  50         int i;
  51
  52         if (protocol->cache_packet_formats(motu) < 0)
  53                 return;
  54
  55         snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
  56         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  57                 mode = i >> 1;
  58
  59                 formats = &motu->tx_packet_formats;
  60                 snd_iprintf(buffer,
  61                             "%u:\t%u\t%u\t%u\n",
  62                             snd_motu_clock_rates[i],
  63                             formats->msg_chunks,
  64                             formats->fixed_part_pcm_chunks[mode],
  65                             formats->differed_part_pcm_chunks[mode]);
  66         }
  67
  68         snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
  69         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  70                 mode = i >> 1;
  71
  72                 formats = &motu->rx_packet_formats;
  73                 snd_iprintf(buffer,
  74                             "%u:\t%u\t%u\t%u\n",
  75                             snd_motu_clock_rates[i],
  76                             formats->msg_chunks,
  77                             formats->fixed_part_pcm_chunks[mode],
  78                             formats->differed_part_pcm_chunks[mode]);
  79         }
  80 }
  81
  82 static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
  83                      const char *name,
  84                      void (*op)(struct snd_info_entry *e,
  85                                 struct snd_info_buffer *b))
  86 {
  87         struct snd_info_entry *entry;
  88
  89         entry = snd_info_create_card_entry(motu->card, name, root);
  90         if (entry == NULL)
  91                 return;
  92
  93         snd_info_set_text_ops(entry, motu, op);
  94         if (snd_info_register(entry) < 0)
  95                 snd_info_free_entry(entry);
  96 }
  97
  98 void snd_motu_proc_init(struct snd_motu *motu)
  99 {
 100         struct snd_info_entry *root;
 101
 102         /*
 103          * All nodes are automatically removed at snd_card_disconnect(),
 104          * by following to link list.
 105          */
 106         root = snd_info_create_card_entry(motu->card, "firewire",
 107                                           motu->card->proc_root);
 108         if (root == NULL)
 109                 return;
 110         root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 111         if (snd_info_register(root) < 0) {
 112                 snd_info_free_entry(root);
 113                 return;
 114         }
 115
 116         add_node(motu, root, "clock", proc_read_clock);
 117         add_node(motu, root, "format", proc_read_format);
 118 }