/*
   *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
   *
   *  Routines for control of EMU10K1 WaveTable synth
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   */
  
  #include "emu10k1_synth_local.h"
  #include <linux/init.h>

  #include <linux/module.h>

  
  MODULE_AUTHOR("Takashi Iwai");
  MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
  MODULE_LICENSE("GPL");
  
  /*
   * create a new hardware dependent device for Emu10k1
   */

  static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev)

  {

  	struct snd_emux *emux;

  	struct snd_emu10k1 *hw;
  	struct snd_emu10k1_synth_arg *arg;

  	unsigned long flags;
  
  	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
  	if (arg == NULL)
  		return -EINVAL;
  
  	if (arg->seq_ports <= 0)
  		return 0; /* nothing */
  	if (arg->max_voices < 1)
  		arg->max_voices = 1;
  	else if (arg->max_voices > 64)
  		arg->max_voices = 64;

  	if (snd_emux_new(&emux) < 0)

  		return -ENOMEM;

  	snd_emu10k1_ops_setup(emux);
  	hw = arg->hwptr;
  	emux->hw = hw;
  	emux->max_voices = arg->max_voices;
  	emux->num_ports = arg->seq_ports;
  	emux->pitch_shift = -501;
  	emux->memhdr = hw->memhdr;
  	/* maximum two ports */
  	emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;
  	/* audigy has two external midis */
  	emux->midi_devidx = hw->audigy ? 2 : 1;
  	emux->linear_panning = 0;
  	emux->hwdep_idx = 2; /* FIXED */
  
  	if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
  		snd_emux_free(emux);

  		return -ENOMEM;
  	}
  
  	spin_lock_irqsave(&hw->voice_lock, flags);

  	hw->synth = emux;

  	hw->get_synth_voice = snd_emu10k1_synth_get_voice;
  	spin_unlock_irqrestore(&hw->voice_lock, flags);

  	dev->driver_data = emux;

  
  	return 0;
  }

  static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev)

  {

  	struct snd_emux *emux;

  	struct snd_emu10k1 *hw;

  	unsigned long flags;
  
  	if (dev->driver_data == NULL)
  		return 0; /* not registered actually */

  	emux = dev->driver_data;

  	hw = emux->hw;

  	spin_lock_irqsave(&hw->voice_lock, flags);
  	hw->synth = NULL;
  	hw->get_synth_voice = NULL;
  	spin_unlock_irqrestore(&hw->voice_lock, flags);

  	snd_emux_free(emux);

  	return 0;
  }
  
  /*
   *  INIT part
   */
  
  static int __init alsa_emu10k1_synth_init(void)
  {
  	

  	static struct snd_seq_dev_ops ops = {

  		snd_emu10k1_synth_new_device,
  		snd_emu10k1_synth_delete_device,
  	};

  	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops,
  					      sizeof(struct snd_emu10k1_synth_arg));

  }
  
  static void __exit alsa_emu10k1_synth_exit(void)
  {
  	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH);
  }
  
  module_init(alsa_emu10k1_synth_init)
  module_exit(alsa_emu10k1_synth_exit)