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Release 4.12 include/sound/opl3.h

Directory: include/sound
#ifndef __SOUND_OPL3_H

#define __SOUND_OPL3_H

/*
 * Definitions of the OPL-3 registers.
 *
 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
 *                  Hannu Savolainen 1993-1996
 *
 *
 *      The OPL-3 mode is switched on by writing 0x01, to the offset 5
 *      of the right side.
 *
 *      Another special register at the right side is at offset 4. It contains
 *      a bit mask defining which voices are used as 4 OP voices.
 *
 *      The percussive mode is implemented in the left side only.
 *
 *      With the above exceptions the both sides can be operated independently.
 *      
 *      A 4 OP voice can be created by setting the corresponding
 *      bit at offset 4 of the right side.
 *
 *      For example setting the rightmost bit (0x01) changes the
 *      first voice on the right side to the 4 OP mode. The fourth
 *      voice is made inaccessible.
 *
 *      If a voice is set to the 2 OP mode, it works like 2 OP modes
 *      of the original YM3812 (AdLib). In addition the voice can 
 *      be connected the left, right or both stereo channels. It can
 *      even be left unconnected. This works with 4 OP voices also.
 *
 *      The stereo connection bits are located in the FEEDBACK_CONNECTION
 *      register of the voice (0xC0-0xC8). In 4 OP voices these bits are
 *      in the second half of the voice.
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/core.h>
#include <sound/hwdep.h>
#include <sound/timer.h>
#include <sound/seq_midi_emul.h>
#ifdef CONFIG_SND_SEQUENCER_OSS
#include <sound/seq_oss.h>
#include <sound/seq_oss_legacy.h>
#endif
#include <sound/seq_device.h>
#include <sound/asound_fm.h>

/*
 *    Register numbers for the global registers
 */


#define OPL3_REG_TEST			0x01

#define   OPL3_ENABLE_WAVE_SELECT	0x20


#define OPL3_REG_TIMER1			0x02

#define OPL3_REG_TIMER2			0x03

#define OPL3_REG_TIMER_CONTROL		0x04	
/* Left side */

#define   OPL3_IRQ_RESET		0x80

#define   OPL3_TIMER1_MASK		0x40

#define   OPL3_TIMER2_MASK		0x20

#define   OPL3_TIMER1_START		0x01

#define   OPL3_TIMER2_START		0x02


#define OPL3_REG_CONNECTION_SELECT	0x04	
/* Right side */

#define   OPL3_LEFT_4OP_0		0x01

#define   OPL3_LEFT_4OP_1		0x02

#define   OPL3_LEFT_4OP_2		0x04

#define   OPL3_RIGHT_4OP_0		0x08

#define   OPL3_RIGHT_4OP_1		0x10

#define   OPL3_RIGHT_4OP_2		0x20


#define OPL3_REG_MODE			0x05	
/* Right side */

#define   OPL3_OPL3_ENABLE		0x01	
/* OPL3 mode */

#define   OPL3_OPL4_ENABLE		0x02	
/* OPL4 mode */


#define OPL3_REG_KBD_SPLIT		0x08	
/* Left side */

#define   OPL3_COMPOSITE_SINE_WAVE_MODE	0x80	
/* Don't use with OPL-3? */

#define   OPL3_KEYBOARD_SPLIT		0x40


#define OPL3_REG_PERCUSSION		0xbd	
/* Left side only */

#define   OPL3_TREMOLO_DEPTH		0x80

#define   OPL3_VIBRATO_DEPTH		0x40

#define	  OPL3_PERCUSSION_ENABLE	0x20

#define   OPL3_BASSDRUM_ON		0x10

#define   OPL3_SNAREDRUM_ON		0x08

#define   OPL3_TOMTOM_ON		0x04

#define   OPL3_CYMBAL_ON		0x02

#define   OPL3_HIHAT_ON			0x01

/*
 *    Offsets to the register banks for operators. To get the
 *      register number just add the operator offset to the bank offset
 *
 *      AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
 */

#define OPL3_REG_AM_VIB			0x20

#define   OPL3_TREMOLO_ON		0x80

#define   OPL3_VIBRATO_ON		0x40

#define   OPL3_SUSTAIN_ON		0x20

#define   OPL3_KSR			0x10	
/* Key scaling rate */

#define   OPL3_MULTIPLE_MASK		0x0f	
/* Frequency multiplier */

 /*
  *   KSL/Total level (0x40 to 0x55)
  */

#define OPL3_REG_KSL_LEVEL		0x40

#define   OPL3_KSL_MASK			0xc0	
/* Envelope scaling bits */

#define   OPL3_TOTAL_LEVEL_MASK		0x3f	
/* Strength (volume) of OP */

/*
 *    Attack / Decay rate (0x60 to 0x75)
 */

#define OPL3_REG_ATTACK_DECAY		0x60

#define   OPL3_ATTACK_MASK		0xf0

#define   OPL3_DECAY_MASK		0x0f

/*
 * Sustain level / Release rate (0x80 to 0x95)
 */

#define OPL3_REG_SUSTAIN_RELEASE	0x80

#define   OPL3_SUSTAIN_MASK		0xf0

#define   OPL3_RELEASE_MASK		0x0f

/*
 * Wave select (0xE0 to 0xF5)
 */

#define OPL3_REG_WAVE_SELECT		0xe0

#define   OPL3_WAVE_SELECT_MASK		0x07

/*
 *    Offsets to the register banks for voices. Just add to the
 *      voice number to get the register number.
 *
 *      F-Number low bits (0xA0 to 0xA8).
 */

#define OPL3_REG_FNUM_LOW		0xa0

/*
 *    F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
 */

#define OPL3_REG_KEYON_BLOCK		0xb0

#define	  OPL3_KEYON_BIT		0x20

#define	  OPL3_BLOCKNUM_MASK		0x1c

#define   OPL3_FNUM_HIGH_MASK		0x03

/*
 *    Feedback / Connection (0xc0 to 0xc8)
 *
 *      These registers have two new bits when the OPL-3 mode
 *      is selected. These bits controls connecting the voice
 *      to the stereo channels. For 4 OP voices this bit is
 *      defined in the second half of the voice (add 3 to the
 *      register offset).
 *
 *      For 4 OP voices the connection bit is used in the
 *      both halves (gives 4 ways to connect the operators).
 */

#define OPL3_REG_FEEDBACK_CONNECTION	0xc0

#define   OPL3_FEEDBACK_MASK		0x0e	
/* Valid just for 1st OP of a voice */

#define   OPL3_CONNECTION_BIT		0x01
/*
 *    In the 4 OP mode there is four possible configurations how the
 *      operators can be connected together (in 2 OP modes there is just
 *      AM or FM). The 4 OP connection mode is defined by the rightmost
 *      bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves.
 *
 *      First half      Second half     Mode
 *
 *                                       +---+
 *                                       v   |
 *      0               0               >+-1-+--2--3--4-->
 *
 *
 *                                      
 *                                       +---+
 *                                       |   |
 *      0               1               >+-1-+--2-+
 *                                                |->
 *                                      >--3----4-+
 *                                      
 *                                       +---+
 *                                       |   |
 *      1               0               >+-1-+-----+
 *                                                 |->
 *                                      >--2--3--4-+
 *
 *                                       +---+
 *                                       |   |
 *      1               1               >+-1-+--+
 *                                              |
 *                                      >--2--3-+->
 *                                              |
 *                                      >--4----+
 */

#define   OPL3_STEREO_BITS		0x30	
/* OPL-3 only */

#define     OPL3_VOICE_TO_LEFT		0x10

#define     OPL3_VOICE_TO_RIGHT		0x20

/*

 */


#define OPL3_LEFT		0x0000

#define OPL3_RIGHT		0x0100


#define OPL3_HW_AUTO		0x0000

#define OPL3_HW_OPL2		0x0200

#define OPL3_HW_OPL3		0x0300

#define OPL3_HW_OPL3_SV		0x0301	
/* S3 SonicVibes */

#define OPL3_HW_OPL3_CS		0x0302	
/* CS4232/CS4236+ */

#define OPL3_HW_OPL3_FM801	0x0303	
/* FM801 */

#define OPL3_HW_OPL3_CS4281	0x0304	
/* CS4281 */

#define OPL3_HW_OPL4		0x0400	
/* YMF278B/YMF295 */

#define OPL3_HW_OPL4_ML		0x0401	
/* YMF704/YMF721 */

#define OPL3_HW_MASK		0xff00


#define MAX_OPL2_VOICES		9

#define MAX_OPL3_VOICES		18

struct snd_opl3;

/*
 * Instrument record, aka "Patch"
 */

/* FM operator */

struct fm_operator {
	
unsigned char am_vib;
	
unsigned char ksl_level;
	
unsigned char attack_decay;
	
unsigned char sustain_release;
	
unsigned char wave_select;
} __attribute__((packed));

/* Instrument data */

struct fm_instrument {
	
struct fm_operator op[4];
	
unsigned char feedback_connection[2];
	
unsigned char echo_delay;
	
unsigned char echo_atten;
	
unsigned char chorus_spread;
	
unsigned char trnsps;
	
unsigned char fix_dur;
	
unsigned char modes;
	
unsigned char fix_key;
};

/* type */

#define FM_PATCH_OPL2	0x01		
/* OPL2 2 operators FM instrument */

#define FM_PATCH_OPL3	0x02		
/* OPL3 4 operators FM instrument */

/* Instrument record */

struct fm_patch {
	
unsigned char prog;
	
unsigned char bank;
	
unsigned char type;
	
struct fm_instrument inst;
	
char name[24];
	
struct fm_patch *next;
};


/*
 * A structure to keep track of each hardware voice
 */

struct snd_opl3_voice {
	
int  state;		/* status */

#define SNDRV_OPL3_ST_OFF		0	/* Not playing */

#define SNDRV_OPL3_ST_ON_2OP	1	/* 2op voice is allocated */

#define SNDRV_OPL3_ST_ON_4OP	2	/* 4op voice is allocated */

#define SNDRV_OPL3_ST_NOT_AVAIL	-1	/* voice is not available */

	
unsigned int time;	/* An allocation time */
	
unsigned char note;	/* Note currently assigned to this voice */

	
unsigned long note_off;	/* note-off time */
	
int note_off_check;	/* check note-off time */

	
unsigned char keyon_reg;	/* KON register shadow */

	
struct snd_midi_channel *chan;	/* Midi channel for this note */
};


struct snd_opl3 {
	
unsigned long l_port;
	
unsigned long r_port;
	
struct resource *res_l_port;
	
struct resource *res_r_port;
	
unsigned short hardware;
	/* hardware access */
	
void (*command) (struct snd_opl3 * opl3, unsigned short cmd, unsigned char val);
	
unsigned short timer_enable;
	
int seq_dev_num;	/* sequencer device number */
	
struct snd_timer *timer1;
	
struct snd_timer *timer2;
	
spinlock_t timer_lock;

	
void *private_data;
	
void (*private_free)(struct snd_opl3 *);

	
struct snd_hwdep *hwdep;
	
spinlock_t reg_lock;
	
struct snd_card *card;		/* The card that this belongs to */
	
unsigned char fm_mode;		/* OPL mode, see SNDRV_DM_FM_MODE_XXX */
	
unsigned char rhythm;		/* percussion mode flag */
	
unsigned char max_voices;	/* max number of voices */
#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)

#define SNDRV_OPL3_MODE_SYNTH 0		/* OSS - voices allocated by application */

#define SNDRV_OPL3_MODE_SEQ 1		/* ALSA - driver handles voice allocation */
	
int synth_mode;			/* synth mode */
	
int seq_client;

	
struct snd_seq_device *seq_dev;	/* sequencer device */
	
struct snd_midi_channel_set * chset;

#ifdef CONFIG_SND_SEQUENCER_OSS
	
struct snd_seq_device *oss_seq_dev;	/* OSS sequencer device */
	
struct snd_midi_channel_set * oss_chset;
#endif
 

#define OPL3_PATCH_HASH_SIZE	32
	
struct fm_patch *patch_table[OPL3_PATCH_HASH_SIZE];

	
struct snd_opl3_voice voices[MAX_OPL3_VOICES]; /* Voices (OPL3 'channel') */
	
int use_time;			/* allocation counter */

	
unsigned short connection_reg;	/* connection reg shadow */
	
unsigned char drum_reg;		/* percussion reg shadow */

	
spinlock_t voice_lock;		/* Lock for voice access */

	
struct timer_list tlist;	/* timer for note-offs and effects */
	
int sys_timer_status;		/* system timer run status */
	
spinlock_t sys_timer_lock;	/* Lock for system timer access */
#endif
};

/* opl3.c */
void snd_opl3_interrupt(struct snd_hwdep * hw);
int snd_opl3_new(struct snd_card *card, unsigned short hardware,
		 struct snd_opl3 **ropl3);
int snd_opl3_init(struct snd_opl3 *opl3);
int snd_opl3_create(struct snd_card *card,
		    unsigned long l_port, unsigned long r_port,
		    unsigned short hardware,
		    int integrated,
		    struct snd_opl3 ** opl3);
int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev);
int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device,
		       struct snd_hwdep ** rhwdep);

/* opl3_synth */
int snd_opl3_open(struct snd_hwdep * hw, struct file *file);
int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
		   unsigned int cmd, unsigned long arg);
int snd_opl3_release(struct snd_hwdep * hw, struct file *file);

void snd_opl3_reset(struct snd_opl3 * opl3);

#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
		    loff_t *offset);
int snd_opl3_load_patch(struct snd_opl3 *opl3,
			int prog, int bank, int type,
			const char *name,
			const unsigned char *ext,
			const unsigned char *data);
struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank,
				     int create_patch);
void snd_opl3_clear_patches(struct snd_opl3 *opl3);
#else

#define snd_opl3_write	NULL

static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {}

Contributors

PersonTokensPropCommitsCommitProp
Takashi Iwai11100.00%1100.00%
Total11100.00%1100.00%

#endif #endif /* __SOUND_OPL3_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela73869.95%753.85%
Takashi Iwai31529.86%538.46%
Ingo Molnar20.19%17.69%
Total1055100.00%13100.00%
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