LXR linux/sound/firewire/oxfw/oxfw-proc.c

   1/*
   2 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
   3 *
   4 * Copyright (c) 2014 Takashi Sakamoto
   5 *
   6 * Licensed under the terms of the GNU General Public License, version 2.
   7 */
   8
   9#include "./oxfw.h"
  10
  11static void proc_read_formation(struct snd_info_entry *entry,
  12                                struct snd_info_buffer *buffer)
  13{
  14        struct snd_oxfw *oxfw = entry->private_data;
  15        struct snd_oxfw_stream_formation formation, curr;
  16        u8 *format;
  17        char flag;
  18        int i, err;
  19
  20        /* Show input. */
  21        err = snd_oxfw_stream_get_current_formation(oxfw,
  22                                                    AVC_GENERAL_PLUG_DIR_IN,
  23                                                    &curr);
  24        if (err < 0)
  25                return;
  26
  27        snd_iprintf(buffer, "Input Stream to device:\n");
  28        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
  29        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
  30                format = oxfw->rx_stream_formats[i];
  31                if (format == NULL)
  32                        continue;
  33
  34                err = snd_oxfw_stream_parse_format(format, &formation);
  35                if (err < 0)
  36                        continue;
  37
  38                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
  39                        flag = '*';
  40                else
  41                        flag = ' ';
  42
  43                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
  44                            formation.rate, formation.pcm, formation.midi);
  45        }
  46
  47        if (!oxfw->has_output)
  48                return;
  49
  50        /* Show output. */
  51        err = snd_oxfw_stream_get_current_formation(oxfw,
  52                                                    AVC_GENERAL_PLUG_DIR_OUT,
  53                                                    &curr);
  54        if (err < 0)
  55                return;
  56
  57        snd_iprintf(buffer, "Output Stream from device:\n");
  58        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
  59        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
  60                format = oxfw->tx_stream_formats[i];
  61                if (format == NULL)
  62                        continue;
  63
  64                err = snd_oxfw_stream_parse_format(format, &formation);
  65                if (err < 0)
  66                        continue;
  67
  68                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
  69                        flag = '*';
  70                else
  71                        flag = ' ';
  72
  73                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
  74                            formation.rate, formation.pcm, formation.midi);
  75        }
  76}
  77
  78static void add_node(struct snd_oxfw *oxfw, struct snd_info_entry *root,
  79                     const char *name,
  80                     void (*op)(struct snd_info_entry *e,
  81                                struct snd_info_buffer *b))
  82{
  83        struct snd_info_entry *entry;
  84
  85        entry = snd_info_create_card_entry(oxfw->card, name, root);
  86        if (entry == NULL)
  87                return;
  88
  89        snd_info_set_text_ops(entry, oxfw, op);
  90        if (snd_info_register(entry) < 0)
  91                snd_info_free_entry(entry);
  92}
  93
  94void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
  95{
  96        struct snd_info_entry *root;
  97
  98        /*
  99         * All nodes are automatically removed at snd_card_disconnect(),
 100         * by following to link list.
 101         */
 102        root = snd_info_create_card_entry(oxfw->card, "firewire",
 103                                          oxfw->card->proc_root);
 104        if (root == NULL)
 105                return;
 106        root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 107        if (snd_info_register(root) < 0) {
 108                snd_info_free_entry(root);
 109                return;
 110        }
 111
 112        add_node(oxfw, root, "formation", proc_read_formation);
 113}
 114