LXR linux/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
  11static 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
  53static 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
  69void 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}
  89