root/include/sound/emu8000.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __SOUND_EMU8000_H
   3 #define __SOUND_EMU8000_H
   4 /*
   5  *  Defines for the emu8000 (AWE32/64)
   6  *
   7  *  Copyright (C) 1999 Steve Ratcliffe
   8  *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
   9  */
  10 
  11 #include <sound/emux_synth.h>
  12 #include <sound/seq_kernel.h>
  13 
  14 /*
  15  * Hardware parameters.
  16  */
  17 #define EMU8000_MAX_DRAM (28 * 1024 * 1024) /* Max on-board mem is 28Mb ???*/
  18 #define EMU8000_DRAM_OFFSET 0x200000    /* Beginning of on board ram */
  19 #define EMU8000_CHANNELS   32   /* Number of hardware channels */
  20 #define EMU8000_DRAM_VOICES     30      /* number of normal voices */
  21 
  22 /* Flags to set a dma channel to read or write */
  23 #define EMU8000_RAM_READ   0
  24 #define EMU8000_RAM_WRITE  1
  25 #define EMU8000_RAM_CLOSE  2
  26 #define EMU8000_RAM_MODE_MASK   0x03
  27 #define EMU8000_RAM_RIGHT       0x10    /* use 'right' DMA channel */
  28 
  29 enum {
  30         EMU8000_CONTROL_BASS = 0,
  31         EMU8000_CONTROL_TREBLE,
  32         EMU8000_CONTROL_CHORUS_MODE,
  33         EMU8000_CONTROL_REVERB_MODE,
  34         EMU8000_CONTROL_FM_CHORUS_DEPTH,
  35         EMU8000_CONTROL_FM_REVERB_DEPTH,
  36         EMU8000_NUM_CONTROLS,
  37 };
  38 
  39 /*
  40  * Structure to hold all state information for the emu8000 driver.
  41  *
  42  * Note 1: The chip supports 32 channels in hardware this is max_channels
  43  * some of the channels may be used for other things so max_channels is
  44  * the number in use for wave voices.
  45  */
  46 struct snd_emu8000 {
  47 
  48         struct snd_emux *emu;
  49 
  50         int index;              /* sequencer client index */
  51         int seq_ports;          /* number of sequencer ports */
  52         int fm_chorus_depth;    /* FM OPL3 chorus depth */
  53         int fm_reverb_depth;    /* FM OPL3 reverb depth */
  54 
  55         int mem_size;           /* memory size */
  56         unsigned long port1;    /* Port usually base+0 */
  57         unsigned long port2;    /* Port usually at base+0x400 */
  58         unsigned long port3;    /* Port usually at base+0x800 */
  59         struct resource *res_port1;
  60         struct resource *res_port2;
  61         struct resource *res_port3;
  62         unsigned short last_reg;/* Last register command */
  63         spinlock_t reg_lock;
  64 
  65         int dram_checked;
  66 
  67         struct snd_card *card;          /* The card that this belongs to */
  68 
  69         int chorus_mode;
  70         int reverb_mode;
  71         int bass_level;
  72         int treble_level;
  73 
  74         struct snd_util_memhdr *memhdr;
  75 
  76         spinlock_t control_lock;
  77         struct snd_kcontrol *controls[EMU8000_NUM_CONTROLS];
  78 
  79         struct snd_pcm *pcm; /* pcm on emu8000 wavetable */
  80 
  81 };
  82 
  83 /* sequencer device id */
  84 #define SNDRV_SEQ_DEV_ID_EMU8000        "emu8000-synth"
  85 
  86 
  87 /* exported functions */
  88 int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
  89                     struct snd_seq_device **ret);
  90 void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
  91                       unsigned int val);
  92 unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,
  93                                 unsigned int reg);
  94 void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
  95                          unsigned int val);
  96 unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,
  97                                  unsigned int reg);
  98 void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);
  99 
 100 void snd_emu8000_init_fm(struct snd_emu8000 *emu);
 101 
 102 void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
 103 void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
 104 void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
 105 int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
 106 int snd_emu8000_load_reverb_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
 107 
 108 #endif /* __SOUND_EMU8000_H */