kernel/sound/firewire/bebob/bebob_proc.c

   1 /*
   2  * bebob_proc.c - a part of driver for BeBoB based devices
   3  *
   4  * Copyright (c) 2013-2014 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #include "./bebob.h"
  10
  11 /* contents of information register */
  12 struct hw_info {
  13         u64 manufacturer;
  14         u32 protocol_ver;
  15         u32 bld_ver;
  16         u32 guid[2];
  17         u32 model_id;
  18         u32 model_rev;
  19         u64 fw_date;
  20         u64 fw_time;
  21         u32 fw_id;
  22         u32 fw_ver;
  23         u32 base_addr;
  24         u32 max_size;
  25         u64 bld_date;
  26         u64 bld_time;
  27 /* may not used in product
  28         u64 dbg_date;
  29         u64 dbg_time;
  30         u32 dbg_id;
  31         u32 dbg_version;
  32 */
  33 } __packed;
  34
  35 static void
  36 proc_read_hw_info(struct snd_info_entry *entry,
  37                   struct snd_info_buffer *buffer)
  38 {
  39         struct snd_bebob *bebob = entry->private_data;
  40         struct hw_info *info;
  41
  42         info = kzalloc(sizeof(struct hw_info), GFP_KERNEL);
  43         if (info == NULL)
  44                 return;
  45
  46         if (snd_bebob_read_block(bebob->unit, 0,
  47                                    info, sizeof(struct hw_info)) < 0)
  48                 goto end;
  49
  50         snd_iprintf(buffer, "Manufacturer:\t%.8s\n",
  51                     (char *)&info->manufacturer);
  52         snd_iprintf(buffer, "Protocol Ver:\t%d\n", info->protocol_ver);
  53         snd_iprintf(buffer, "Build Ver:\t%d\n", info->bld_ver);
  54         snd_iprintf(buffer, "GUID:\t\t0x%.8X%.8X\n",
  55                     info->guid[0], info->guid[1]);
  56         snd_iprintf(buffer, "Model ID:\t0x%02X\n", info->model_id);
  57         snd_iprintf(buffer, "Model Rev:\t%d\n", info->model_rev);
  58         snd_iprintf(buffer, "Firmware Date:\t%.8s\n", (char *)&info->fw_date);
  59         snd_iprintf(buffer, "Firmware Time:\t%.8s\n", (char *)&info->fw_time);
  60         snd_iprintf(buffer, "Firmware ID:\t0x%X\n", info->fw_id);
  61         snd_iprintf(buffer, "Firmware Ver:\t%d\n", info->fw_ver);
  62         snd_iprintf(buffer, "Base Addr:\t0x%X\n", info->base_addr);
  63         snd_iprintf(buffer, "Max Size:\t%d\n", info->max_size);
  64         snd_iprintf(buffer, "Loader Date:\t%.8s\n", (char *)&info->bld_date);
  65         snd_iprintf(buffer, "Loader Time:\t%.8s\n", (char *)&info->bld_time);
  66
  67 end:
  68         kfree(info);
  69 }
  70
  71 static void
  72 proc_read_meters(struct snd_info_entry *entry,
  73                  struct snd_info_buffer *buffer)
  74 {
  75         struct snd_bebob *bebob = entry->private_data;
  76         struct snd_bebob_meter_spec *spec = bebob->spec->meter;
  77         u32 *buf;
  78         unsigned int i, c, channels, size;
  79
  80         if (spec == NULL)
  81                 return;
  82
  83         channels = spec->num * 2;
  84         size = channels * sizeof(u32);
  85         buf = kmalloc(size, GFP_KERNEL);
  86         if (buf == NULL)
  87                 return;
  88
  89         if (spec->get(bebob, buf, size) < 0)
  90                 goto end;
  91
  92         for (i = 0, c = 1; i < channels; i++) {
  93                 snd_iprintf(buffer, "%s %d:\t%d\n",
  94                             spec->labels[i / 2], c++, buf[i]);
  95                 if ((i + 1 < channels - 1) &&
  96                     (strcmp(spec->labels[i / 2],
  97                             spec->labels[(i + 1) / 2]) != 0))
  98                         c = 1;
  99         }
 100 end:
 101         kfree(buf);
 102 }
 103
 104 static void
 105 proc_read_formation(struct snd_info_entry *entry,
 106                 struct snd_info_buffer *buffer)
 107 {
 108         struct snd_bebob *bebob = entry->private_data;
 109         struct snd_bebob_stream_formation *formation;
 110         unsigned int i;
 111
 112         snd_iprintf(buffer, "Output Stream from device:\n");
 113         snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
 114         formation = bebob->tx_stream_formations;
 115         for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
 116                 snd_iprintf(buffer,
 117                             "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
 118                             formation[i].pcm, formation[i].midi);
 119         }
 120
 121         snd_iprintf(buffer, "Input Stream to device:\n");
 122         snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
 123         formation = bebob->rx_stream_formations;
 124         for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
 125                 snd_iprintf(buffer,
 126                             "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
 127                             formation[i].pcm, formation[i].midi);
 128         }
 129 }
 130
 131 static void
 132 proc_read_clock(struct snd_info_entry *entry,
 133                 struct snd_info_buffer *buffer)
 134 {
 135         struct snd_bebob *bebob = entry->private_data;
 136         struct snd_bebob_rate_spec *rate_spec = bebob->spec->rate;
 137         struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock;
 138         unsigned int rate, id;
 139         bool internal;
 140
 141         if (rate_spec->get(bebob, &rate) >= 0)
 142                 snd_iprintf(buffer, "Sampling rate: %d\n", rate);
 143
 144         if (clk_spec) {
 145                 if (clk_spec->get(bebob, &id) >= 0)
 146                         snd_iprintf(buffer, "Clock Source: %s\n",
 147                                     clk_spec->labels[id]);
 148         } else {
 149                 if (snd_bebob_stream_check_internal_clock(bebob,
 150                                                           &internal) >= 0)
 151                         snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)\n",
 152                                     (internal) ? "Internal" : "External",
 153                                     bebob->sync_input_plug);
 154         }
 155 }
 156
 157 static void
 158 add_node(struct snd_bebob *bebob, struct snd_info_entry *root, const char *name,
 159          void (*op)(struct snd_info_entry *e, struct snd_info_buffer *b))
 160 {
 161         struct snd_info_entry *entry;
 162
 163         entry = snd_info_create_card_entry(bebob->card, name, root);
 164         if (entry == NULL)
 165                 return;
 166
 167         snd_info_set_text_ops(entry, bebob, op);
 168         if (snd_info_register(entry) < 0)
 169                 snd_info_free_entry(entry);
 170 }
 171
 172 void snd_bebob_proc_init(struct snd_bebob *bebob)
 173 {
 174         struct snd_info_entry *root;
 175
 176         /*
 177          * All nodes are automatically removed at snd_card_disconnect(),
 178          * by following to link list.
 179          */
 180         root = snd_info_create_card_entry(bebob->card, "firewire",
 181                                           bebob->card->proc_root);
 182         if (root == NULL)
 183                 return;
 184         root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 185         if (snd_info_register(root) < 0) {
 186                 snd_info_free_entry(root);
 187                 return;
 188         }
 189
 190         add_node(bebob, root, "clock", proc_read_clock);
 191         add_node(bebob, root, "firmware", proc_read_hw_info);
 192         add_node(bebob, root, "formation", proc_read_formation);
 193
 194         if (bebob->spec->meter != NULL)
 195                 add_node(bebob, root, "meter", proc_read_meters);
 196 }