// SPDX-License-Identifier: GPL-2.0-only
/*
 * tascam-proc.h - a part of driver for TASCAM FireWire series
 *
 * Copyright (c) 2015 Takashi Sakamoto
 */

#include "./tascam.h"

static void proc_read_firmware(struct snd_info_entry *entry,
                               struct snd_info_buffer *buffer)
{
        struct snd_tscm *tscm = entry->private_data;
        __be32 data;
        unsigned int reg, fpga, arm, hw;
        int err;

        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
                        &data, sizeof(data), 0);
        if (err < 0)
                return;
        reg = be32_to_cpu(data);

        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
                        &data, sizeof(data), 0);
        if (err < 0)
                return;
        fpga = be32_to_cpu(data);

        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
                        &data, sizeof(data), 0);
        if (err < 0)
                return;
        arm = be32_to_cpu(data);

        err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
                        TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
                        &data, sizeof(data), 0);
        if (err < 0)
                return;
        hw = be32_to_cpu(data);

        snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
        snd_iprintf(buffer, "FPGA:     %d (0x%08x)\n", fpga & 0xffff, fpga);
        snd_iprintf(buffer, "ARM:      %d (0x%08x)\n", arm & 0xffff, arm);
        snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
}

static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
                     const char *name,
                     void (*op)(struct snd_info_entry *e,
                                struct snd_info_buffer *b))
{
        struct snd_info_entry *entry;

        entry = snd_info_create_card_entry(tscm->card, name, root);
        if (entry)
                snd_info_set_text_ops(entry, tscm, op);
}

void snd_tscm_proc_init(struct snd_tscm *tscm)
{
        struct snd_info_entry *root;

        /*
         * All nodes are automatically removed at snd_card_disconnect(),
         * by following to link list.
         */
        root = snd_info_create_card_entry(tscm->card, "firewire",
                                          tscm->card->proc_root);
        if (root == NULL)
                return;
        root->mode = S_IFDIR | 0555;

        add_node(tscm, root, "firmware", proc_read_firmware);
}