LXR linux/sound/firewire/fireface/ff-proc.c

   1/*
   2 * ff-proc.c - a part of driver for RME Fireface series
   3 *
   4 * Copyright (c) 2015-2017 Takashi Sakamoto
   5 *
   6 * Licensed under the terms of the GNU General Public License, version 2.
   7 */
   8
   9#include "./ff.h"
  10
  11static void proc_dump_clock_config(struct snd_info_entry *entry,
  12                                   struct snd_info_buffer *buffer)
  13{
  14        struct snd_ff *ff = entry->private_data;
  15
  16        ff->spec->protocol->dump_clock_config(ff, buffer);
  17}
  18
  19static void proc_dump_sync_status(struct snd_info_entry *entry,
  20                                  struct snd_info_buffer *buffer)
  21{
  22        struct snd_ff *ff = entry->private_data;
  23
  24        ff->spec->protocol->dump_sync_status(ff, buffer);
  25}
  26
  27static void add_node(struct snd_ff *ff, struct snd_info_entry *root,
  28                     const char *name,
  29                     void (*op)(struct snd_info_entry *e,
  30                                struct snd_info_buffer *b))
  31{
  32        struct snd_info_entry *entry;
  33
  34        entry = snd_info_create_card_entry(ff->card, name, root);
  35        if (entry == NULL)
  36                return;
  37
  38        snd_info_set_text_ops(entry, ff, op);
  39        if (snd_info_register(entry) < 0)
  40                snd_info_free_entry(entry);
  41}
  42
  43void snd_ff_proc_init(struct snd_ff *ff)
  44{
  45        struct snd_info_entry *root;
  46
  47        /*
  48         * All nodes are automatically removed at snd_card_disconnect(),
  49         * by following to link list.
  50         */
  51        root = snd_info_create_card_entry(ff->card, "firewire",
  52                                          ff->card->proc_root);
  53        if (root == NULL)
  54                return;
  55        root->mode = S_IFDIR | 0555;
  56        if (snd_info_register(root) < 0) {
  57                snd_info_free_entry(root);
  58                return;
  59        }
  60
  61        add_node(ff, root, "clock-config", proc_dump_clock_config);
  62        add_node(ff, root, "sync-status", proc_dump_sync_status);
  63}
  64