kernel/sound/firewire/tascam/tascam-proc.c

   1 /*
   2  * tascam-proc.h - a part of driver for TASCAM FireWire series
   3  *
   4  * Copyright (c) 2015 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #include "./tascam.h"
  10
  11 static void proc_read_firmware(struct snd_info_entry *entry,
  12                                struct snd_info_buffer *buffer)
  13 {
  14         struct snd_tscm *tscm = entry->private_data;
  15         __be32 data;
  16         unsigned int reg, fpga, arm, hw;
  17         int err;
  18
  19         err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  20                         TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
  21                         &data, sizeof(data), 0);
  22         if (err < 0)
  23                 return;
  24         reg = be32_to_cpu(data);
  25
  26         err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  27                         TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
  28                         &data, sizeof(data), 0);
  29         if (err < 0)
  30                 return;
  31         fpga = be32_to_cpu(data);
  32
  33         err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  34                         TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
  35                         &data, sizeof(data), 0);
  36         if (err < 0)
  37                 return;
  38         arm = be32_to_cpu(data);
  39
  40         err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  41                         TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
  42                         &data, sizeof(data), 0);
  43         if (err < 0)
  44                 return;
  45         hw = be32_to_cpu(data);
  46
  47         snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
  48         snd_iprintf(buffer, "FPGA:     %d (0x%08x)\n", fpga & 0xffff, fpga);
  49         snd_iprintf(buffer, "ARM:      %d (0x%08x)\n", arm & 0xffff, arm);
  50         snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
  51 }
  52
  53 static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
  54                      const char *name,
  55                      void (*op)(struct snd_info_entry *e,
  56                                 struct snd_info_buffer *b))
  57 {
  58         struct snd_info_entry *entry;
  59
  60         entry = snd_info_create_card_entry(tscm->card, name, root);
  61         if (entry == NULL)
  62                 return;
  63
  64         snd_info_set_text_ops(entry, tscm, op);
  65         if (snd_info_register(entry) < 0)
  66                 snd_info_free_entry(entry);
  67 }
  68
  69 void snd_tscm_proc_init(struct snd_tscm *tscm)
  70 {
  71         struct snd_info_entry *root;
  72
  73         /*
  74          * All nodes are automatically removed at snd_card_disconnect(),
  75          * by following to link list.
  76          */
  77         root = snd_info_create_card_entry(tscm->card, "firewire",
  78                                           tscm->card->proc_root);
  79         if (root == NULL)
  80                 return;
  81         root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
  82         if (snd_info_register(root) < 0) {
  83                 snd_info_free_entry(root);
  84                 return;
  85         }
  86
  87         add_node(tscm, root, "firmware", proc_read_firmware);
  88 }