Root/include/sound/emu8000.h

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

Archive Download this file



interactive