// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *     and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk>
 *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
 *
 *  Emu8000 synth plug-in routine
 */

#include "emu8000_local.h"
#include <linux/init.h>
#include <linux/module.h>
#include <sound/initval.h>

MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");
MODULE_DESCRIPTION("Emu8000 synth plug-in routine");
MODULE_LICENSE("GPL");

/*----------------------------------------------------------------*/

/*
 * create a new hardware dependent device for Emu8000
 */
static int snd_emu8000_probe(struct snd_seq_device *dev)
{
        struct snd_emu8000 *hw;
        struct snd_emux *emu;

        hw = *(struct snd_emu8000**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
        if (hw == NULL)
                return -EINVAL;

        if (hw->emu)
                return -EBUSY; /* already exists..? */

        if (snd_emux_new(&emu) < 0)
                return -ENOMEM;

        hw->emu = emu;
        snd_emu8000_ops_setup(hw);

        emu->hw = hw;
        emu->max_voices = EMU8000_DRAM_VOICES;
        emu->num_ports = hw->seq_ports;

        if (hw->memhdr) {
                dev_err(hw->card->dev, "memhdr is already initialized!?\n");
                snd_util_memhdr_free(hw->memhdr);
        }
        hw->memhdr = snd_util_memhdr_new(hw->mem_size);
        if (hw->memhdr == NULL) {
                snd_emux_free(emu);
                hw->emu = NULL;
                return -ENOMEM;
        }

        emu->memhdr = hw->memhdr;
        emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */
        emu->midi_devidx = 1;
        emu->linear_panning = 1;
        emu->hwdep_idx = 2; /* FIXED */

        if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) {
                snd_emux_free(emu);
                snd_util_memhdr_free(hw->memhdr);
                hw->emu = NULL;
                hw->memhdr = NULL;
                return -ENOMEM;
        }

        if (hw->mem_size > 0)
                snd_emu8000_pcm_new(dev->card, hw, 1);

        dev->driver_data = hw;

        return 0;
}


/*
 * free all resources
 */
static void snd_emu8000_remove(struct snd_seq_device *dev)
{
        struct snd_emu8000 *hw;

        if (dev->driver_data == NULL)
                return; /* no synth was allocated actually */

        hw = dev->driver_data;
        if (hw->pcm)
                snd_device_free(dev->card, hw->pcm);
        snd_emux_free(hw->emu);
        snd_util_memhdr_free(hw->memhdr);
        hw->emu = NULL;
        hw->memhdr = NULL;
}

/*
 *  INIT part
 */

static struct snd_seq_driver emu8000_driver = {
        .probe = snd_emu8000_probe,
        .remove = snd_emu8000_remove,
        .driver = {
                .name = KBUILD_MODNAME,
        },
        .id = SNDRV_SEQ_DEV_ID_EMU8000,
        .argsize = sizeof(struct snd_emu8000 *),
};

module_snd_seq_driver(emu8000_driver);