LXR linux/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
  10const 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
  27static 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
  35static 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
  47void 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}
  63