[linux.git] / include / sound / opl3.h

#ifndef __SOUND_OPL3_H
#define __SOUND_OPL3_H

/*
 * Definitions of the OPL-3 registers.
 *
 * Copyright (c) by Jaroslav Kysela <[email protected]>,
 *                  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>
#include <sound/seq_oss.h>
#include <sound/seq_oss_legacy.h>
#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 IS_ENABLED(CONFIG_SND_SEQUENCER)
#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;

#if IS_ENABLED(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 IS_ENABLED(CONFIG_SND_SEQUENCER)
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) {}
#endif

#endif /* __SOUND_OPL3_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __SOUND_OPL3_H
	2	#define __SOUND_OPL3_H
	3
	4	/*
	5	* Definitions of the OPL-3 registers.
	6	*
c1017a4c	7	* Copyright (c) by Jaroslav Kysela <[email protected]>,
1da177e4 LT	8	* Hannu Savolainen 1993-1996
	9	*
	10	*
	11	* The OPL-3 mode is switched on by writing 0x01, to the offset 5
	12	* of the right side.
	13	*
	14	* Another special register at the right side is at offset 4. It contains
	15	* a bit mask defining which voices are used as 4 OP voices.
	16	*
	17	* The percussive mode is implemented in the left side only.
	18	*
	19	* With the above exceptions the both sides can be operated independently.
	20	*
	21	* A 4 OP voice can be created by setting the corresponding
	22	* bit at offset 4 of the right side.
	23	*
	24	* For example setting the rightmost bit (0x01) changes the
	25	* first voice on the right side to the 4 OP mode. The fourth
	26	* voice is made inaccessible.
	27	*
	28	* If a voice is set to the 2 OP mode, it works like 2 OP modes
	29	* of the original YM3812 (AdLib). In addition the voice can
	30	* be connected the left, right or both stereo channels. It can
	31	* even be left unconnected. This works with 4 OP voices also.
	32	*
	33	* The stereo connection bits are located in the FEEDBACK_CONNECTION
	34	* register of the voice (0xC0-0xC8). In 4 OP voices these bits are
	35	* in the second half of the voice.
	36	*
	37	*
	38	* This program is free software; you can redistribute it and/or modify
	39	* it under the terms of the GNU General Public License as published by
	40	* the Free Software Foundation; either version 2 of the License, or
	41	* (at your option) any later version.
	42	*
	43	* This program is distributed in the hope that it will be useful,
	44	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	45	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	46	* GNU General Public License for more details.
	47	*
	48	* You should have received a copy of the GNU General Public License
	49	* along with this program; if not, write to the Free Software
	50	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	51	*
	52	*/
	53
9004acc7 TI	54	#include <sound/core.h>
	55	#include <sound/hwdep.h>
	56	#include <sound/timer.h>
	57	#include <sound/seq_midi_emul.h>
9004acc7 TI	58	#include <sound/seq_oss.h>
9004acc7 TI	59	#include <sound/seq_oss_legacy.h>
9004acc7 TI	60	#include <sound/seq_device.h>
9004acc7 TI	61	#include <sound/asound_fm.h>
1da177e4 LT	62
	63	/*
	64	* Register numbers for the global registers
	65	*/
	66
	67	#define OPL3_REG_TEST 0x01
	68	#define OPL3_ENABLE_WAVE_SELECT 0x20
	69
	70	#define OPL3_REG_TIMER1 0x02
	71	#define OPL3_REG_TIMER2 0x03
	72	#define OPL3_REG_TIMER_CONTROL 0x04 /* Left side */
	73	#define OPL3_IRQ_RESET 0x80
	74	#define OPL3_TIMER1_MASK 0x40
	75	#define OPL3_TIMER2_MASK 0x20
	76	#define OPL3_TIMER1_START 0x01
	77	#define OPL3_TIMER2_START 0x02
	78
	79	#define OPL3_REG_CONNECTION_SELECT 0x04 /* Right side */
	80	#define OPL3_LEFT_4OP_0 0x01
	81	#define OPL3_LEFT_4OP_1 0x02
	82	#define OPL3_LEFT_4OP_2 0x04
	83	#define OPL3_RIGHT_4OP_0 0x08
	84	#define OPL3_RIGHT_4OP_1 0x10
	85	#define OPL3_RIGHT_4OP_2 0x20
	86
	87	#define OPL3_REG_MODE 0x05 /* Right side */
	88	#define OPL3_OPL3_ENABLE 0x01 /* OPL3 mode */
	89	#define OPL3_OPL4_ENABLE 0x02 /* OPL4 mode */
	90
	91	#define OPL3_REG_KBD_SPLIT 0x08 /* Left side */
	92	#define OPL3_COMPOSITE_SINE_WAVE_MODE 0x80 /* Don't use with OPL-3? */
	93	#define OPL3_KEYBOARD_SPLIT 0x40
	94
	95	#define OPL3_REG_PERCUSSION 0xbd /* Left side only */
	96	#define OPL3_TREMOLO_DEPTH 0x80
	97	#define OPL3_VIBRATO_DEPTH 0x40
	98	#define OPL3_PERCUSSION_ENABLE 0x20
	99	#define OPL3_BASSDRUM_ON 0x10
	100	#define OPL3_SNAREDRUM_ON 0x08
	101	#define OPL3_TOMTOM_ON 0x04
	102	#define OPL3_CYMBAL_ON 0x02
	103	#define OPL3_HIHAT_ON 0x01
	104
	105	/*
	106	* Offsets to the register banks for operators. To get the
	107	* register number just add the operator offset to the bank offset
	108	*
	109	* AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
	110	*/
	111	#define OPL3_REG_AM_VIB 0x20
	112	#define OPL3_TREMOLO_ON 0x80
	113	#define OPL3_VIBRATO_ON 0x40
	114	#define OPL3_SUSTAIN_ON 0x20
	115	#define OPL3_KSR 0x10 /* Key scaling rate */
	116	#define OPL3_MULTIPLE_MASK 0x0f /* Frequency multiplier */
	117
	118	/*
	119	* KSL/Total level (0x40 to 0x55)
	120	*/
	121	#define OPL3_REG_KSL_LEVEL 0x40
	122	#define OPL3_KSL_MASK 0xc0 /* Envelope scaling bits */
	123	#define OPL3_TOTAL_LEVEL_MASK 0x3f /* Strength (volume) of OP */
	124
	125	/*
126	* Attack / Decay rate (0x60 to 0x75)
127	*/
128	#define OPL3_REG_ATTACK_DECAY 0x60
129	#define OPL3_ATTACK_MASK 0xf0
130	#define OPL3_DECAY_MASK 0x0f
131
132	/*
133	* Sustain level / Release rate (0x80 to 0x95)
134	*/
135	#define OPL3_REG_SUSTAIN_RELEASE 0x80
136	#define OPL3_SUSTAIN_MASK 0xf0
137	#define OPL3_RELEASE_MASK 0x0f
138
139	/*
140	* Wave select (0xE0 to 0xF5)
141	*/
142	#define OPL3_REG_WAVE_SELECT 0xe0
143	#define OPL3_WAVE_SELECT_MASK 0x07
144
145	/*
146	* Offsets to the register banks for voices. Just add to the
147	* voice number to get the register number.
148	*
149	* F-Number low bits (0xA0 to 0xA8).
150	*/
151	#define OPL3_REG_FNUM_LOW 0xa0
152
153	/*
154	* F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
155	*/
156	#define OPL3_REG_KEYON_BLOCK 0xb0
157	#define OPL3_KEYON_BIT 0x20
158	#define OPL3_BLOCKNUM_MASK 0x1c
159	#define OPL3_FNUM_HIGH_MASK 0x03
160
161	/*
162	* Feedback / Connection (0xc0 to 0xc8)
163	*
164	* These registers have two new bits when the OPL-3 mode
165	* is selected. These bits controls connecting the voice
166	* to the stereo channels. For 4 OP voices this bit is
167	* defined in the second half of the voice (add 3 to the
168	* register offset).
169	*
170	* For 4 OP voices the connection bit is used in the
171	* both halves (gives 4 ways to connect the operators).
172	*/
173	#define OPL3_REG_FEEDBACK_CONNECTION 0xc0
174	#define OPL3_FEEDBACK_MASK 0x0e /* Valid just for 1st OP of a voice */
175	#define OPL3_CONNECTION_BIT 0x01
176	/*
177	* In the 4 OP mode there is four possible configurations how the
178	* operators can be connected together (in 2 OP modes there is just
179	* AM or FM). The 4 OP connection mode is defined by the rightmost
180	* bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves.
181	*
182	* First half Second half Mode
183	*
184	* +---+
185	* v \|
186	* 0 0 >+-1-+--2--3--4-->
187	*
188	*
189	*
190	* +---+
191	* \| \|
192	* 0 1 >+-1-+--2-+
193	* \|->
194	* >--3----4-+
195	*
196	* +---+
197	* \| \|
198	* 1 0 >+-1-+-----+
199	* \|->
200	* >--2--3--4-+
201	*
202	* +---+
203	* \| \|
204	* 1 1 >+-1-+--+
205	* \|
206	* >--2--3-+->
207	* \|
208	* >--4----+
209	*/
210	#define OPL3_STEREO_BITS 0x30 /* OPL-3 only */
211	#define OPL3_VOICE_TO_LEFT 0x10
212	#define OPL3_VOICE_TO_RIGHT 0x20
213
214	/*
215
216	*/
217
218	#define OPL3_LEFT 0x0000
219	#define OPL3_RIGHT 0x0100
220
221	#define OPL3_HW_AUTO 0x0000
222	#define OPL3_HW_OPL2 0x0200
223	#define OPL3_HW_OPL3 0x0300
224	#define OPL3_HW_OPL3_SV 0x0301 /* S3 SonicVibes */
225	#define OPL3_HW_OPL3_CS 0x0302 /* CS4232/CS4236+ */
226	#define OPL3_HW_OPL3_FM801 0x0303 /* FM801 */
227	#define OPL3_HW_OPL3_CS4281 0x0304 /* CS4281 */
1da177e4 LT	228	#define OPL3_HW_OPL4 0x0400 /* YMF278B/YMF295 */
	229	#define OPL3_HW_OPL4_ML 0x0401 /* YMF704/YMF721 */
	230	#define OPL3_HW_MASK 0xff00
	231
	232	#define MAX_OPL2_VOICES 9
	233	#define MAX_OPL3_VOICES 18
	234
5b1646a8	235	struct snd_opl3;
1da177e4	236
224a0332 TI	237	/*
	238	* Instrument record, aka "Patch"
	239	*/
	240
	241	/* FM operator */
	242	struct fm_operator {
	243	unsigned char am_vib;
	244	unsigned char ksl_level;
	245	unsigned char attack_decay;
	246	unsigned char sustain_release;
	247	unsigned char wave_select;
	248	} __attribute__((packed));
	249
	250	/* Instrument data */
	251	struct fm_instrument {
	252	struct fm_operator op[4];
	253	unsigned char feedback_connection[2];
	254	unsigned char echo_delay;
	255	unsigned char echo_atten;
	256	unsigned char chorus_spread;
	257	unsigned char trnsps;
	258	unsigned char fix_dur;
	259	unsigned char modes;
	260	unsigned char fix_key;
	261	};
	262
	263	/* type */
	264	#define FM_PATCH_OPL2 0x01 /* OPL2 2 operators FM instrument */
	265	#define FM_PATCH_OPL3 0x02 /* OPL3 4 operators FM instrument */
	266
	267	/* Instrument record */
	268	struct fm_patch {
	269	unsigned char prog;
	270	unsigned char bank;
	271	unsigned char type;
	272	struct fm_instrument inst;
	273	char name[24];
	274	struct fm_patch *next;
	275	};
	276
	277
1da177e4 LT	278	/*
	279	* A structure to keep track of each hardware voice
	280	*/
5b1646a8	281	struct snd_opl3_voice {
1da177e4 LT	282	int state; /* status */
	283	#define SNDRV_OPL3_ST_OFF 0 /* Not playing */
	284	#define SNDRV_OPL3_ST_ON_2OP 1 /* 2op voice is allocated */
	285	#define SNDRV_OPL3_ST_ON_4OP 2 /* 4op voice is allocated */
	286	#define SNDRV_OPL3_ST_NOT_AVAIL -1 /* voice is not available */
	287
	288	unsigned int time; /* An allocation time */
	289	unsigned char note; /* Note currently assigned to this voice */
	290
	291	unsigned long note_off; /* note-off time */
	292	int note_off_check; /* check note-off time */
	293
	294	unsigned char keyon_reg; /* KON register shadow */
	295
5b1646a8 TI	296	struct snd_midi_channel chan; / Midi channel for this note */
5b1646a8 TI	297	};
1da177e4 LT	298
	299	struct snd_opl3 {
	300	unsigned long l_port;
	301	unsigned long r_port;
	302	struct resource *res_l_port;
	303	struct resource *res_r_port;
	304	unsigned short hardware;
	305	/* hardware access */
5b1646a8	306	void (command) (struct snd_opl3 opl3, unsigned short cmd, unsigned char val);
1da177e4 LT	307	unsigned short timer_enable;
1da177e4 LT	308	int seq_dev_num; /* sequencer device number */
5b1646a8 TI	309	struct snd_timer *timer1;
5b1646a8 TI	310	struct snd_timer *timer2;
1da177e4 LT	311	spinlock_t timer_lock;
	312
	313	void *private_data;
5b1646a8	314	void (private_free)(struct snd_opl3 );
1da177e4	315
04576525	316	struct snd_hwdep *hwdep;
1da177e4	317	spinlock_t reg_lock;
5b1646a8	318	struct snd_card card; / The card that this belongs to */
1da177e4 LT	319	unsigned char fm_mode; /* OPL mode, see SNDRV_DM_FM_MODE_XXX */
	320	unsigned char rhythm; /* percussion mode flag */
	321	unsigned char max_voices; /* max number of voices */
6d2412b8	322	#if IS_ENABLED(CONFIG_SND_SEQUENCER)
1da177e4 LT	323	#define SNDRV_OPL3_MODE_SYNTH 0 /* OSS - voices allocated by application */
	324	#define SNDRV_OPL3_MODE_SEQ 1 /* ALSA - driver handles voice allocation */
	325	int synth_mode; /* synth mode */
	326	int seq_client;
	327
5b1646a8 TI	328	struct snd_seq_device seq_dev; / sequencer device */
5b1646a8 TI	329	struct snd_midi_channel_set * chset;
1da177e4	330
3d774d5e	331	#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
5b1646a8 TI	332	struct snd_seq_device oss_seq_dev; / OSS sequencer device */
5b1646a8 TI	333	struct snd_midi_channel_set * oss_chset;
1da177e4 LT	334	#endif
1da177e4 LT	335
224a0332 TI	336	#define OPL3_PATCH_HASH_SIZE 32
224a0332 TI	337	struct fm_patch *patch_table[OPL3_PATCH_HASH_SIZE];
1da177e4	338
5b1646a8	339	struct snd_opl3_voice voices[MAX_OPL3_VOICES]; /* Voices (OPL3 'channel') */
1da177e4 LT	340	int use_time; /* allocation counter */
	341
	342	unsigned short connection_reg; /* connection reg shadow */
	343	unsigned char drum_reg; /* percussion reg shadow */
	344
	345	spinlock_t voice_lock; /* Lock for voice access */
	346
	347	struct timer_list tlist; /* timer for note-offs and effects */
	348	int sys_timer_status; /* system timer run status */
	349	spinlock_t sys_timer_lock; /* Lock for system timer access */
	350	#endif
1da177e4 LT	351	};
	352
	353	/* opl3.c */
5b1646a8 TI	354	void snd_opl3_interrupt(struct snd_hwdep * hw);
	355	int snd_opl3_new(struct snd_card *card, unsigned short hardware,
	356	struct snd_opl3 **ropl3);
	357	int snd_opl3_init(struct snd_opl3 *opl3);
	358	int snd_opl3_create(struct snd_card *card,
1da177e4 LT	359	unsigned long l_port, unsigned long r_port,
	360	unsigned short hardware,
	361	int integrated,
5b1646a8 TI	362	struct snd_opl3 ** opl3);
	363	int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev);
	364	int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device,
	365	struct snd_hwdep ** rhwdep);
1da177e4 LT	366
1da177e4 LT	367	/* opl3_synth */
5b1646a8 TI	368	int snd_opl3_open(struct snd_hwdep * hw, struct file *file);
5b1646a8 TI	369	int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
1da177e4	370	unsigned int cmd, unsigned long arg);
5b1646a8	371	int snd_opl3_release(struct snd_hwdep * hw, struct file *file);
1da177e4	372
5b1646a8	373	void snd_opl3_reset(struct snd_opl3 * opl3);
1da177e4	374
6d2412b8	375	#if IS_ENABLED(CONFIG_SND_SEQUENCER)
0ee46c9d TI	376	long snd_opl3_write(struct snd_hwdep hw, const char __user buf, long count,
0ee46c9d TI	377	loff_t *offset);
224a0332 TI	378	int snd_opl3_load_patch(struct snd_opl3 *opl3,
	379	int prog, int bank, int type,
	380	const char *name,
	381	const unsigned char *ext,
	382	const unsigned char *data);
	383	struct fm_patch snd_opl3_find_patch(struct snd_opl3 opl3, int prog, int bank,
	384	int create_patch);
	385	void snd_opl3_clear_patches(struct snd_opl3 *opl3);
0ee46c9d TI	386	#else
	387	#define snd_opl3_write NULL
	388	static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {}
	389	#endif
224a0332	390
1da177e4	391	#endif /* __SOUND_OPL3_H */