linux/include/sound/emu8000.h
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   1#ifndef __SOUND_EMU8000_H
   2#define __SOUND_EMU8000_H
   3/*
   4 *  Defines for the emu8000 (AWE32/64)
   5 *
   6 *  Copyright (C) 1999 Steve Ratcliffe
   7 *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
   8 *
   9 *   This program is free software; you can redistribute it and/or modify
  10 *   it under the terms of the GNU General Public License as published by
  11 *   the Free Software Foundation; either version 2 of the License, or
  12 *   (at your option) any later version.
  13 *
  14 *   This program is distributed in the hope that it will be useful,
  15 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *   GNU General Public License for more details.
  18 *
  19 *   You should have received a copy of the GNU General Public License
  20 *   along with this program; if not, write to the Free Software
  21 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22 */
  23
  24#include <sound/emux_synth.h>
  25#include <sound/seq_kernel.h>
  26
  27/*
  28 * Hardware parameters.
  29 */
  30#define EMU8000_MAX_DRAM (28 * 1024 * 1024) /* Max on-board mem is 28Mb ???*/
  31#define EMU8000_DRAM_OFFSET 0x200000    /* Beginning of on board ram */
  32#define EMU8000_CHANNELS   32   /* Number of hardware channels */
  33#define EMU8000_DRAM_VOICES     30      /* number of normal voices */
  34
  35/* Flags to set a dma channel to read or write */
  36#define EMU8000_RAM_READ   0
  37#define EMU8000_RAM_WRITE  1
  38#define EMU8000_RAM_CLOSE  2
  39#define EMU8000_RAM_MODE_MASK   0x03
  40#define EMU8000_RAM_RIGHT       0x10    /* use 'right' DMA channel */
  41
  42enum {
  43        EMU8000_CONTROL_BASS = 0,
  44        EMU8000_CONTROL_TREBLE,
  45        EMU8000_CONTROL_CHORUS_MODE,
  46        EMU8000_CONTROL_REVERB_MODE,
  47        EMU8000_CONTROL_FM_CHORUS_DEPTH,
  48        EMU8000_CONTROL_FM_REVERB_DEPTH,
  49        EMU8000_NUM_CONTROLS,
  50};
  51
  52/*
  53 * Structure to hold all state information for the emu8000 driver.
  54 *
  55 * Note 1: The chip supports 32 channels in hardware this is max_channels
  56 * some of the channels may be used for other things so max_channels is
  57 * the number in use for wave voices.
  58 */
  59struct snd_emu8000 {
  60
  61        struct snd_emux *emu;
  62
  63        int index;              /* sequencer client index */
  64        int seq_ports;          /* number of sequencer ports */
  65        int fm_chorus_depth;    /* FM OPL3 chorus depth */
  66        int fm_reverb_depth;    /* FM OPL3 reverb depth */
  67
  68        int mem_size;           /* memory size */
  69        unsigned long port1;    /* Port usually base+0 */
  70        unsigned long port2;    /* Port usually at base+0x400 */
  71        unsigned long port3;    /* Port usually at base+0x800 */
  72        struct resource *res_port1;
  73        struct resource *res_port2;
  74        struct resource *res_port3;
  75        unsigned short last_reg;/* Last register command */
  76        spinlock_t reg_lock;
  77
  78        int dram_checked;
  79
  80        struct snd_card *card;          /* The card that this belongs to */
  81
  82        int chorus_mode;
  83        int reverb_mode;
  84        int bass_level;
  85        int treble_level;
  86
  87        struct snd_util_memhdr *memhdr;
  88
  89        spinlock_t control_lock;
  90        struct snd_kcontrol *controls[EMU8000_NUM_CONTROLS];
  91
  92        struct snd_pcm *pcm; /* pcm on emu8000 wavetable */
  93
  94};
  95
  96/* sequencer device id */
  97#define SNDRV_SEQ_DEV_ID_EMU8000        "emu8000-synth"
  98
  99
 100/* exported functions */
 101int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
 102                    struct snd_seq_device **ret);
 103void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
 104                      unsigned int val);
 105unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,
 106                                unsigned int reg);
 107void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
 108                         unsigned int val);
 109unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,
 110                                 unsigned int reg);
 111void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);
 112
 113void snd_emu8000_init_fm(struct snd_emu8000 *emu);
 114
 115void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
 116void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
 117void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
 118int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
 119int snd_emu8000_load_reverb_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
 120
 121#endif /* __SOUND_EMU8000_H */
 122
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