// SPDX-License-Identifier: GPL-2.0-only
/*
 * digi00x-proc.c - a part of driver for Digidesign Digi 002/003 family
 *
 * Copyright (c) 2014-2015 Takashi Sakamoto
 */

#include "digi00x.h"

static int get_optical_iface_mode(struct snd_dg00x *dg00x,
                                  enum snd_dg00x_optical_mode *mode)
{
        __be32 data;
        int err;

        err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,
                                 DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE,
                                 &data, sizeof(data), 0);
        if (err >= 0)
                *mode = be32_to_cpu(data) & 0x01;

        return err;
}

static void proc_read_clock(struct snd_info_entry *entry,
                            struct snd_info_buffer *buf)
{
        static const char *const source_name[] = {
                [SND_DG00X_CLOCK_INTERNAL] = "internal",
                [SND_DG00X_CLOCK_SPDIF] = "s/pdif",
                [SND_DG00X_CLOCK_ADAT] = "adat",
                [SND_DG00X_CLOCK_WORD] = "word clock",
        };
        static const char *const optical_name[] = {
                [SND_DG00X_OPT_IFACE_MODE_ADAT] = "adat",
                [SND_DG00X_OPT_IFACE_MODE_SPDIF] = "s/pdif",
        };
        struct snd_dg00x *dg00x = entry->private_data;
        enum snd_dg00x_optical_mode mode;
        unsigned int rate;
        enum snd_dg00x_clock clock;
        bool detect;

        if (get_optical_iface_mode(dg00x, &mode) < 0)
                return;
        if (snd_dg00x_stream_get_local_rate(dg00x, &rate) < 0)
                return;
        if (snd_dg00x_stream_get_clock(dg00x, &clock) < 0)
                return;

        snd_iprintf(buf, "Optical mode: %s\n", optical_name[mode]);
        snd_iprintf(buf, "Sampling Rate: %d\n", rate);
        snd_iprintf(buf, "Clock Source: %s\n", source_name[clock]);

        if (clock == SND_DG00X_CLOCK_INTERNAL)
                return;

        if (snd_dg00x_stream_check_external_clock(dg00x, &detect) < 0)
                return;
        snd_iprintf(buf, "External source: %s\n", detect ? "detected" : "not");
        if (!detect)
                return;

        if (snd_dg00x_stream_get_external_rate(dg00x, &rate) >= 0)
                snd_iprintf(buf, "External sampling rate: %d\n", rate);
}

void snd_dg00x_proc_init(struct snd_dg00x *dg00x)
{
        struct snd_info_entry *root, *entry;

        /*
         * All nodes are automatically removed at snd_card_disconnect(),
         * by following to link list.
         */
        root = snd_info_create_card_entry(dg00x->card, "firewire",
                                          dg00x->card->proc_root);
        if (root == NULL)
                return;

        root->mode = S_IFDIR | 0555;

        entry = snd_info_create_card_entry(dg00x->card, "clock", root);
        if (entry)
                snd_info_set_text_ops(entry, dg00x, proc_read_clock);
}