LXR linux/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
  10static 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
  26static 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        unsigned int rate;
  32        enum snd_motu_clock_source source;
  33
  34        if (snd_motu_protocol_get_clock_rate(motu, &rate) < 0)
  35                return;
  36        if (snd_motu_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        unsigned int mode;
  48        struct snd_motu_packet_format *formats;
  49        int i;
  50
  51        if (snd_motu_protocol_cache_packet_formats(motu) < 0)
  52                return;
  53
  54        snd_iprintf(buffer, "tx:\tmsg\tfixed\ttotal\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                            motu->spec->tx_fixed_pcm_chunks[mode],
  64                            formats->pcm_chunks[mode]);
  65        }
  66
  67        snd_iprintf(buffer, "rx:\tmsg\tfixed\ttotal\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                            motu->spec->rx_fixed_pcm_chunks[mode],
  77                            formats->pcm_chunks[mode]);
  78        }
  79}
  80
  81static 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
  93void 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}
 110