root/sound/firewire/bebob/bebob_terratec.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * bebob_terratec.c - a part of driver for BeBoB based devices
 *
 * Copyright (c) 2013-2014 Takashi Sakamoto
 */

#include "./bebob.h"

static const enum snd_bebob_clock_type phase88_rack_clk_src_types[] = {
        SND_BEBOB_CLOCK_TYPE_INTERNAL,
        SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* S/PDIF */
        SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* Word Clock */
};
static int
phase88_rack_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
{
        unsigned int enable_ext, enable_word;
        int err;

        err = avc_audio_get_selector(bebob->unit, 0, 9, &enable_ext);
        if (err < 0)
                goto end;
        err = avc_audio_get_selector(bebob->unit, 0, 8, &enable_word);
        if (err < 0)
                goto end;

        if (enable_ext == 0)
                *id = 0;
        else if (enable_word == 0)
                *id = 1;
        else
                *id = 2;
end:
        return err;
}

static const struct snd_bebob_rate_spec phase_series_rate_spec = {
        .get    = &snd_bebob_stream_get_rate,
        .set    = &snd_bebob_stream_set_rate,
};

/* PHASE 88 Rack FW */
static const struct snd_bebob_clock_spec phase88_rack_clk = {
        .num    = ARRAY_SIZE(phase88_rack_clk_src_types),
        .types  = phase88_rack_clk_src_types,
        .get    = &phase88_rack_clk_src_get,
};
const struct snd_bebob_spec phase88_rack_spec = {
        .clock  = &phase88_rack_clk,
        .rate   = &phase_series_rate_spec,
        .meter  = NULL
};