sound/firewire/motu/motu-proc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * motu-proc.c - a part of driver for MOTU FireWire series
   4  *
   5  * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
   6  */
   7
   8 #include "./motu.h"
   9
  10 static const char *const clock_names[] = {
  11         [SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
  12         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
  13         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
  14         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
  15         [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
  16         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
  17         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
  18         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
  19         [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PDIF on coaxial interface",
  20         [SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
  21         [SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
  22         [SND_MOTU_CLOCK_SOURCE_SPH] = "Source packet header",
  23         [SND_MOTU_CLOCK_SOURCE_UNKNOWN] = "Unknown",
  24 };
  25
  26 static void proc_read_clock(struct snd_info_entry *entry,
  27                             struct snd_info_buffer *buffer)
  28 {
  29
  30         struct snd_motu *motu = entry->private_data;
  31         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  32         unsigned int rate;
  33         enum snd_motu_clock_source source;
  34
  35         if (protocol->get_clock_rate(motu, &rate) < 0)
  36                 return;
  37         if (protocol->get_clock_source(motu, &source) < 0)
  38                 return;
  39
  40         snd_iprintf(buffer, "Rate:\t%d\n", rate);
  41         snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
  42 }
  43
  44 static void proc_read_format(struct snd_info_entry *entry,
  45                              struct snd_info_buffer *buffer)
  46 {
  47         struct snd_motu *motu = entry->private_data;
  48         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  49         unsigned int mode;
  50         struct snd_motu_packet_format *formats;
  51         int i;
  52
  53         if (protocol->cache_packet_formats(motu) < 0)
  54                 return;
  55
  56         snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
  57         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  58                 mode = i >> 1;
  59
  60                 formats = &motu->tx_packet_formats;
  61                 snd_iprintf(buffer,
  62                             "%u:\t%u\t%u\t%u\n",
  63                             snd_motu_clock_rates[i],
  64                             formats->msg_chunks,
  65                             formats->fixed_part_pcm_chunks[mode],
  66                             formats->differed_part_pcm_chunks[mode]);
  67         }
  68
  69         snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
  70         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  71                 mode = i >> 1;
  72
  73                 formats = &motu->rx_packet_formats;
  74                 snd_iprintf(buffer,
  75                             "%u:\t%u\t%u\t%u\n",
  76                             snd_motu_clock_rates[i],
  77                             formats->msg_chunks,
  78                             formats->fixed_part_pcm_chunks[mode],
  79                             formats->differed_part_pcm_chunks[mode]);
  80         }
  81 }
  82
  83 static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
  84                      const char *name,
  85                      void (*op)(struct snd_info_entry *e,
  86                                 struct snd_info_buffer *b))
  87 {
  88         struct snd_info_entry *entry;
  89
  90         entry = snd_info_create_card_entry(motu->card, name, root);
  91         if (entry)
  92                 snd_info_set_text_ops(entry, motu, op);
  93 }
  94
  95 void snd_motu_proc_init(struct snd_motu *motu)
  96 {
  97         struct snd_info_entry *root;
  98
  99         /*
 100          * All nodes are automatically removed at snd_card_disconnect(),
 101          * by following to link list.
 102          */
 103         root = snd_info_create_card_entry(motu->card, "firewire",
 104                                           motu->card->proc_root);
 105         if (root == NULL)
 106                 return;
 107         root->mode = S_IFDIR | 0555;
 108
 109         add_node(motu, root, "clock", proc_read_clock);
 110         add_node(motu, root, "format", proc_read_format);
 111 }