sound/firewire/fireface/ff-proc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ff-proc.c - a part of driver for RME Fireface series
   4  *
   5  * Copyright (c) 2015-2017 Takashi Sakamoto
   6  */
   7
   8 #include "./ff.h"
   9
  10 const char *snd_ff_proc_get_clk_label(enum snd_ff_clock_src src)
  11 {
  12         static const char *const labels[] = {
  13                 "Internal",
  14                 "S/PDIF",
  15                 "ADAT1",
  16                 "ADAT2",
  17                 "Word",
  18                 "LTC",
  19         };
  20
  21         if (src >= ARRAY_SIZE(labels))
  22                 return NULL;
  23
  24         return labels[src];
  25 }
  26
  27 static void proc_dump_status(struct snd_info_entry *entry,
  28                              struct snd_info_buffer *buffer)
  29 {
  30         struct snd_ff *ff = entry->private_data;
  31
  32         ff->spec->protocol->dump_status(ff, buffer);
  33 }
  34
  35 static void add_node(struct snd_ff *ff, struct snd_info_entry *root,
  36                      const char *name,
  37                      void (*op)(struct snd_info_entry *e,
  38                                 struct snd_info_buffer *b))
  39 {
  40         struct snd_info_entry *entry;
  41
  42         entry = snd_info_create_card_entry(ff->card, name, root);
  43         if (entry)
  44                 snd_info_set_text_ops(entry, ff, op);
  45 }
  46
  47 void snd_ff_proc_init(struct snd_ff *ff)
  48 {
  49         struct snd_info_entry *root;
  50
  51         /*
  52          * All nodes are automatically removed at snd_card_disconnect(),
  53          * by following to link list.
  54          */
  55         root = snd_info_create_card_entry(ff->card, "firewire",
  56                                           ff->card->proc_root);
  57         if (root == NULL)
  58                 return;
  59         root->mode = S_IFDIR | 0555;
  60
  61         add_node(ff, root, "status", proc_dump_status);
  62 }