Logo Search packages:      
Sourcecode: alsa-driver version File versions

emu8000.h

#ifndef __SOUND_EMU8000_H
#define __SOUND_EMU8000_H
/*
 *  Defines for the emu8000 (AWE32/64)
 *
 *  Copyright (C) 1999 Steve Ratcliffe
 *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
 *
 *   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 "emux_synth.h"
#include "seq_kernel.h"

/*
 * Hardware parameters.
 */
#define EMU8000_MAX_DRAM (28 * 1024 * 1024) /* Max on-board mem is 28Mb ???*/
#define EMU8000_DRAM_OFFSET 0x200000      /* Beginning of on board ram */
#define EMU8000_CHANNELS   32 /* Number of hardware channels */
#define EMU8000_DRAM_VOICES   30    /* number of normal voices */

/* Flags to set a dma channel to read or write */
#define EMU8000_RAM_READ   0
#define EMU8000_RAM_WRITE  1
#define EMU8000_RAM_CLOSE  2
#define EMU8000_RAM_MODE_MASK 0x03
#define EMU8000_RAM_RIGHT     0x10  /* use 'right' DMA channel */

enum {
      EMU8000_CONTROL_BASS = 0,
      EMU8000_CONTROL_TREBLE,
      EMU8000_CONTROL_CHORUS_MODE,
      EMU8000_CONTROL_REVERB_MODE,
      EMU8000_CONTROL_FM_CHORUS_DEPTH,
      EMU8000_CONTROL_FM_REVERB_DEPTH,
      EMU8000_NUM_CONTROLS,
};

/*
 * Structure to hold all state information for the emu8000 driver.
 *
 * Note 1: The chip supports 32 channels in hardware this is max_channels
 * some of the channels may be used for other things so max_channels is
 * the number in use for wave voices.
 */
typedef struct snd_emu8000 {

      snd_emux_t *emu;

      int index;        /* sequencer client index */
      int seq_ports;          /* number of sequencer ports */
      int fm_chorus_depth;    /* FM OPL3 chorus depth */
      int fm_reverb_depth;    /* FM OPL3 reverb depth */

      int mem_size;           /* memory size */
      unsigned long port1;    /* Port usually base+0 */
      unsigned long port2;    /* Port usually at base+0x400 */
      unsigned long port3;    /* Port usually at base+0x800 */
      struct resource *res_port1;
      struct resource *res_port2;
      struct resource *res_port3;
      unsigned short last_reg;/* Last register command */
      spinlock_t reg_lock;

      int dram_checked;

      snd_card_t *card;       /* The card that this belongs to */

      int chorus_mode;
      int reverb_mode;
      int bass_level;
      int treble_level;

      snd_util_memhdr_t *memhdr;

      spinlock_t control_lock;
      snd_kcontrol_t *controls[EMU8000_NUM_CONTROLS];

      snd_pcm_t *pcm; /* pcm on emu8000 wavetable */

} emu8000_t;

/* sequencer device id */
#define SNDRV_SEQ_DEV_ID_EMU8000    "emu8000-synth"


/* exported functions */
int snd_emu8000_new(snd_card_t *card, int device, long port, int seq_ports, snd_seq_device_t **ret);
void snd_emu8000_poke(emu8000_t *emu, unsigned int port, unsigned int reg,
                  unsigned int val);
unsigned short snd_emu8000_peek(emu8000_t *emu, unsigned int port,
                        unsigned int reg);
void snd_emu8000_poke_dw(emu8000_t *emu, unsigned int port, unsigned int reg,
                   unsigned int val);
unsigned int snd_emu8000_peek_dw(emu8000_t *emu, unsigned int port,
                         unsigned int reg);
void snd_emu8000_dma_chan(emu8000_t *emu, int ch, int mode);

void snd_emu8000_init_fm(emu8000_t *emu);

void snd_emu8000_update_chorus_mode(emu8000_t *emu);
void snd_emu8000_update_reverb_mode(emu8000_t *emu);
void snd_emu8000_update_equalizer(emu8000_t *emu);
int snd_emu8000_load_chorus_fx(emu8000_t *emu, int mode, const void __user *buf, long len);
int snd_emu8000_load_reverb_fx(emu8000_t *emu, int mode, const void __user *buf, long len);

#endif /* __SOUND_EMU8000_H */

Generated by  Doxygen 1.6.0   Back to index