// SPDX-License-Identifier: GPL-2.0-only
/*
 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
 *
 * Copyright (c) 2014 Takashi Sakamoto
 */

#include "./oxfw.h"

static void proc_read_formation(struct snd_info_entry *entry,
                                struct snd_info_buffer *buffer)
{
        struct snd_oxfw *oxfw = entry->private_data;
        struct snd_oxfw_stream_formation formation, curr;
        u8 *format;
        char flag;
        int i, err;

        /* Show input. */
        err = snd_oxfw_stream_get_current_formation(oxfw,
                                                    AVC_GENERAL_PLUG_DIR_IN,
                                                    &curr);
        if (err < 0)
                return;

        snd_iprintf(buffer, "Input Stream to device:\n");
        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
                format = oxfw->rx_stream_formats[i];
                if (format == NULL)
                        continue;

                err = snd_oxfw_stream_parse_format(format, &formation);
                if (err < 0)
                        continue;

                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
                        flag = '*';
                else
                        flag = ' ';

                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
                            formation.rate, formation.pcm, formation.midi);
        }

        if (!oxfw->has_output)
                return;

        /* Show output. */
        err = snd_oxfw_stream_get_current_formation(oxfw,
                                                    AVC_GENERAL_PLUG_DIR_OUT,
                                                    &curr);
        if (err < 0)
                return;

        snd_iprintf(buffer, "Output Stream from device:\n");
        snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
        for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
                format = oxfw->tx_stream_formats[i];
                if (format == NULL)
                        continue;

                err = snd_oxfw_stream_parse_format(format, &formation);
                if (err < 0)
                        continue;

                if (memcmp(&formation, &curr, sizeof(curr)) == 0)
                        flag = '*';
                else
                        flag = ' ';

                snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
                            formation.rate, formation.pcm, formation.midi);
        }
}

static void add_node(struct snd_oxfw *oxfw, 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(oxfw->card, name, root);
        if (entry)
                snd_info_set_text_ops(entry, oxfw, op);
}

void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
{
        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(oxfw->card, "firewire",
                                          oxfw->card->proc_root);
        if (root == NULL)
                return;
        root->mode = S_IFDIR | 0555;

        add_node(oxfw, root, "formation", proc_read_formation);
}