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TOMOYO Linux Cross Reference
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 
 42 enum {
 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  */
 59 struct 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 */
101 int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
102                     struct snd_seq_device **ret);
103 void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
104                       unsigned int val);
105 unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,
106                                 unsigned int reg);
107 void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,
108                          unsigned int val);
109 unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,
110                                  unsigned int reg);
111 void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);
112 
113 void snd_emu8000_init_fm(struct snd_emu8000 *emu);
114 
115 void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
116 void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
117 void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
118 int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
119 int 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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