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
  11 static 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
  19 static 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
  27 static 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
  43 void 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 }