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Diffstat (limited to '')
| -rw-r--r-- | include/sound/emu8000.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/sound/emu8000.h b/include/sound/emu8000.h new file mode 100644 index 0000000000..072791bbcf --- /dev/null +++ b/include/sound/emu8000.h @@ -0,0 +1,105 @@ +/* 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 <tiwai@suse.de> + */ + +#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 { + 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. + */ +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 */ |