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

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * tascam-proc.h - a part of driver for TASCAM FireWire series
   4 *
   5 * Copyright (c) 2015 Takashi Sakamoto
   6 */
   7
   8#include "./tascam.h"
   9
  10static void proc_read_firmware(struct snd_info_entry *entry,
  11                               struct snd_info_buffer *buffer)
  12{
  13        struct snd_tscm *tscm = entry->private_data;
  14        __be32 data;
  15        unsigned int reg, fpga, arm, hw;
  16        int err;
  17
  18        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  19                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
  20                        &data, sizeof(data), 0);
  21        if (err < 0)
  22                return;
  23        reg = be32_to_cpu(data);
  24
  25        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  26                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
  27                        &data, sizeof(data), 0);
  28        if (err < 0)
  29                return;
  30        fpga = be32_to_cpu(data);
  31
  32        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  33                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
  34                        &data, sizeof(data), 0);
  35        if (err < 0)
  36                return;
  37        arm = be32_to_cpu(data);
  38
  39        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
  40                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
  41                        &data, sizeof(data), 0);
  42        if (err < 0)
  43                return;
  44        hw = be32_to_cpu(data);
  45
  46        snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
  47        snd_iprintf(buffer, "FPGA:     %d (0x%08x)\n", fpga & 0xffff, fpga);
  48        snd_iprintf(buffer, "ARM:      %d (0x%08x)\n", arm & 0xffff, arm);
  49        snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
  50}
  51
  52static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
  53                     const char *name,
  54                     void (*op)(struct snd_info_entry *e,
  55                                struct snd_info_buffer *b))
  56{
  57        struct snd_info_entry *entry;
  58
  59        entry = snd_info_create_card_entry(tscm->card, name, root);
  60        if (entry)
  61                snd_info_set_text_ops(entry, tscm, op);
  62}
  63
  64void snd_tscm_proc_init(struct snd_tscm *tscm)
  65{
  66        struct snd_info_entry *root;
  67
  68        /*
  69         * All nodes are automatically removed at snd_card_disconnect(),
  70         * by following to link list.
  71         */
  72        root = snd_info_create_card_entry(tscm->card, "firewire",
  73                                          tscm->card->proc_root);
  74        if (root == NULL)
  75                return;
  76        root->mode = S_IFDIR | 0555;
  77
  78        add_node(tscm, root, "firmware", proc_read_firmware);
  79}
  80