blob: 072791bbcf5cdc27d8fb21074bd16396dde1fb7e [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-or-later */
#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 <>
#include <sound/emux_synth.h>
#include <sound/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 {
* 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.
struct snd_emu8000 {
struct snd_emux *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 */
unsigned short last_reg;/* Last register command */
spinlock_t reg_lock;
int dram_checked;
struct snd_card *card; /* The card that this belongs to */
int chorus_mode;
int reverb_mode;
int bass_level;
int treble_level;
struct snd_util_memhdr *memhdr;
spinlock_t control_lock;
struct snd_kcontrol *controls[EMU8000_NUM_CONTROLS];
struct snd_pcm *pcm; /* pcm on emu8000 wavetable */
/* sequencer device id */
#define SNDRV_SEQ_DEV_ID_EMU8000 "emu8000-synth"
/* exported functions */
int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
struct snd_seq_device **ret);
void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
unsigned int val);
unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,
unsigned int reg);
void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
unsigned int val);
unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,
unsigned int reg);
void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);
void snd_emu8000_init_fm(struct snd_emu8000 *emu);
void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
int snd_emu8000_load_reverb_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
#endif /* __SOUND_EMU8000_H */