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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
   4 *
   5 * Copyright (c) 2014 Takashi Sakamoto
   6 */
   7
   8#include "./oxfw.h"
   9
  10static void proc_read_formation(struct snd_info_entry *entry,
  11                                struct snd_info_buffer *buffer)
  12{
  13        struct snd_oxfw *oxfw = entry->private_data;
  14        struct snd_oxfw_stream_formation formation, curr;
  15        u8 *format;
  16        char flag;
  17        int i, err;
  18
  19        /* Show input. */
  20        err = snd_oxfw_stream_get_current_formation(oxfw,
  21                                                    AVC_GENERAL_PLUG_DIR_IN,
  22                                                    &curr);
  23        if (err < 0)
  24                return;
  25
  26        snd_iprintf(buffer, "Input Stream to device:\n");
  27        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
  28        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
  29                format = oxfw->rx_stream_formats[i];
  30                if (format == NULL)
  31                        continue;
  32
  33                err = snd_oxfw_stream_parse_format(format, &formation);
  34                if (err < 0)
  35                        continue;
  36
  37                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
  38                        flag = '*';
  39                else
  40                        flag = ' ';
  41
  42                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
  43                            formation.rate, formation.pcm, formation.midi);
  44        }
  45
  46        if (!oxfw->has_output)
  47                return;
  48
  49        /* Show output. */
  50        err = snd_oxfw_stream_get_current_formation(oxfw,
  51                                                    AVC_GENERAL_PLUG_DIR_OUT,
  52                                                    &curr);
  53        if (err < 0)
  54                return;
  55
  56        snd_iprintf(buffer, "Output Stream from device:\n");
  57        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
  58        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
  59                format = oxfw->tx_stream_formats[i];
  60                if (format == NULL)
  61                        continue;
  62
  63                err = snd_oxfw_stream_parse_format(format, &formation);
  64                if (err < 0)
  65                        continue;
  66
  67                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
  68                        flag = '*';
  69                else
  70                        flag = ' ';
  71
  72                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
  73                            formation.rate, formation.pcm, formation.midi);
  74        }
  75}
  76
  77static void add_node(struct snd_oxfw *oxfw, struct snd_info_entry *root,
  78                     const char *name,
  79                     void (*op)(struct snd_info_entry *e,
  80                                struct snd_info_buffer *b))
  81{
  82        struct snd_info_entry *entry;
  83
  84        entry = snd_info_create_card_entry(oxfw->card, name, root);
  85        if (entry)
  86                snd_info_set_text_ops(entry, oxfw, op);
  87}
  88
  89void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
  90{
  91        struct snd_info_entry *root;
  92
  93        /*
  94         * All nodes are automatically removed at snd_card_disconnect(),
  95         * by following to link list.
  96         */
  97        root = snd_info_create_card_entry(oxfw->card, "firewire",
  98                                          oxfw->card->proc_root);
  99        if (root == NULL)
 100                return;
 101        root->mode = S_IFDIR | 0555;
 102
 103        add_node(oxfw, root, "formation", proc_read_formation);
 104}
 105