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        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
  44static 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
  83static 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
  95void 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}
 112