LXR linux/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
  11static 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/PCIF 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
  25static 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
  43static 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
  82static 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
  98void 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}
 119