106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __SOUND_EMU8000_H
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#define __SOUND_EMU8000_H
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/*
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* Defines for the emu8000 (AWE32/64)
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*
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* Copyright (C) 1999 Steve Ratcliffe
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* Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
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*/
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#include <sound/emux_synth.h>
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#include <sound/seq_kernel.h>
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/*
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* Hardware parameters.
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*/
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#define EMU8000_MAX_DRAM (28 * 1024 * 1024) /* Max on-board mem is 28Mb ???*/
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#define EMU8000_DRAM_OFFSET 0x200000 /* Beginning of on board ram */
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#define EMU8000_CHANNELS 32 /* Number of hardware channels */
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#define EMU8000_DRAM_VOICES 30 /* number of normal voices */
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/* Flags to set a dma channel to read or write */
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#define EMU8000_RAM_READ 0
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#define EMU8000_RAM_WRITE 1
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#define EMU8000_RAM_CLOSE 2
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#define EMU8000_RAM_MODE_MASK 0x03
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#define EMU8000_RAM_RIGHT 0x10 /* use 'right' DMA channel */
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enum {
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EMU8000_CONTROL_BASS = 0,
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EMU8000_CONTROL_TREBLE,
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EMU8000_CONTROL_CHORUS_MODE,
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EMU8000_CONTROL_REVERB_MODE,
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EMU8000_CONTROL_FM_CHORUS_DEPTH,
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EMU8000_CONTROL_FM_REVERB_DEPTH,
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EMU8000_NUM_CONTROLS,
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};
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/*
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* Structure to hold all state information for the emu8000 driver.
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*
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* Note 1: The chip supports 32 channels in hardware this is max_channels
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* some of the channels may be used for other things so max_channels is
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* the number in use for wave voices.
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*/
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struct snd_emu8000 {
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struct snd_emux *emu;
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int index; /* sequencer client index */
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int seq_ports; /* number of sequencer ports */
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int fm_chorus_depth; /* FM OPL3 chorus depth */
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int fm_reverb_depth; /* FM OPL3 reverb depth */
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int mem_size; /* memory size */
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unsigned long port1; /* Port usually base+0 */
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unsigned long port2; /* Port usually at base+0x400 */
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unsigned long port3; /* Port usually at base+0x800 */
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unsigned short last_reg;/* Last register command */
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spinlock_t reg_lock;
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int dram_checked;
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struct snd_card *card; /* The card that this belongs to */
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int chorus_mode;
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int reverb_mode;
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int bass_level;
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int treble_level;
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struct snd_util_memhdr *memhdr;
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spinlock_t control_lock;
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struct snd_kcontrol *controls[EMU8000_NUM_CONTROLS];
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struct snd_pcm *pcm; /* pcm on emu8000 wavetable */
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};
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/* sequencer device id */
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#define SNDRV_SEQ_DEV_ID_EMU8000 "emu8000-synth"
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/* exported functions */
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int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
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struct snd_seq_device **ret);
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void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
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unsigned int val);
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unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,
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unsigned int reg);
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void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
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unsigned int val);
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unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,
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unsigned int reg);
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void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);
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void snd_emu8000_init_fm(struct snd_emu8000 *emu);
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void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
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void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
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void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
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int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
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int snd_emu8000_load_reverb_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
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#endif /* __SOUND_EMU8000_H */
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