root/sound/firewire/motu/motu-proc.c

DEFINITIONS

1. proc_read_clock
2. proc_read_format
3. add_node
4. snd_motu_proc_init

   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 };
  23 
  24 static void proc_read_clock(struct snd_info_entry *entry,
  25                             struct snd_info_buffer *buffer)
  26 {
  27 
  28         struct snd_motu *motu = entry->private_data;
  29         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  30         unsigned int rate;
  31         enum snd_motu_clock_source source;
  32 
  33         if (protocol->get_clock_rate(motu, &rate) < 0)
  34                 return;
  35         if (protocol->get_clock_source(motu, &source) < 0)
  36                 return;
  37 
  38         snd_iprintf(buffer, "Rate:\t%d\n", rate);
  39         snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
  40 }
  41 
  42 static void proc_read_format(struct snd_info_entry *entry,
  43                              struct snd_info_buffer *buffer)
  44 {
  45         struct snd_motu *motu = entry->private_data;
  46         const struct snd_motu_protocol *const protocol = motu->spec->protocol;
  47         unsigned int mode;
  48         struct snd_motu_packet_format *formats;
  49         int i;
  50 
  51         if (protocol->cache_packet_formats(motu) < 0)
  52                 return;
  53 
  54         snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
  55         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  56                 mode = i >> 1;
  57 
  58                 formats = &motu->tx_packet_formats;
  59                 snd_iprintf(buffer,
  60                             "%u:\t%u\t%u\t%u\n",
  61                             snd_motu_clock_rates[i],
  62                             formats->msg_chunks,
  63                             formats->fixed_part_pcm_chunks[mode],
  64                             formats->differed_part_pcm_chunks[mode]);
  65         }
  66 
  67         snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
  68         for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
  69                 mode = i >> 1;
  70 
  71                 formats = &motu->rx_packet_formats;
  72                 snd_iprintf(buffer,
  73                             "%u:\t%u\t%u\t%u\n",
  74                             snd_motu_clock_rates[i],
  75                             formats->msg_chunks,
  76                             formats->fixed_part_pcm_chunks[mode],
  77                             formats->differed_part_pcm_chunks[mode]);
  78         }
  79 }
  80 
  81 static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
  82                      const char *name,
  83                      void (*op)(struct snd_info_entry *e,
  84                                 struct snd_info_buffer *b))
  85 {
  86         struct snd_info_entry *entry;
  87 
  88         entry = snd_info_create_card_entry(motu->card, name, root);
  89         if (entry)
  90                 snd_info_set_text_ops(entry, motu, op);
  91 }
  92 
  93 void snd_motu_proc_init(struct snd_motu *motu)
  94 {
  95         struct snd_info_entry *root;
  96 
  97         /*
  98          * All nodes are automatically removed at snd_card_disconnect(),
  99          * by following to link list.
 100          */
 101         root = snd_info_create_card_entry(motu->card, "firewire",
 102                                           motu->card->proc_root);
 103         if (root == NULL)
 104                 return;
 105         root->mode = S_IFDIR | 0555;
 106 
 107         add_node(motu, root, "clock", proc_read_clock);
 108         add_node(motu, root, "format", proc_read_format);
 109 }