/* SPDX-License-Identifier: GPL-2.0-or-later */ #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. */ #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 … #define OPL3_ENABLE_WAVE_SELECT … #define OPL3_REG_TIMER1 … #define OPL3_REG_TIMER2 … #define OPL3_REG_TIMER_CONTROL … #define OPL3_IRQ_RESET … #define OPL3_TIMER1_MASK … #define OPL3_TIMER2_MASK … #define OPL3_TIMER1_START … #define OPL3_TIMER2_START … #define OPL3_REG_CONNECTION_SELECT … #define OPL3_LEFT_4OP_0 … #define OPL3_LEFT_4OP_1 … #define OPL3_LEFT_4OP_2 … #define OPL3_RIGHT_4OP_0 … #define OPL3_RIGHT_4OP_1 … #define OPL3_RIGHT_4OP_2 … #define OPL3_REG_MODE … #define OPL3_OPL3_ENABLE … #define OPL3_OPL4_ENABLE … #define OPL3_REG_KBD_SPLIT … #define OPL3_COMPOSITE_SINE_WAVE_MODE … #define OPL3_KEYBOARD_SPLIT … #define OPL3_REG_PERCUSSION … #define OPL3_TREMOLO_DEPTH … #define OPL3_VIBRATO_DEPTH … #define OPL3_PERCUSSION_ENABLE … #define OPL3_BASSDRUM_ON … #define OPL3_SNAREDRUM_ON … #define OPL3_TOMTOM_ON … #define OPL3_CYMBAL_ON … #define OPL3_HIHAT_ON … /* * 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 … #define OPL3_TREMOLO_ON … #define OPL3_VIBRATO_ON … #define OPL3_SUSTAIN_ON … #define OPL3_KSR … #define OPL3_MULTIPLE_MASK … /* * KSL/Total level (0x40 to 0x55) */ #define OPL3_REG_KSL_LEVEL … #define OPL3_KSL_MASK … #define OPL3_TOTAL_LEVEL_MASK … /* * Attack / Decay rate (0x60 to 0x75) */ #define OPL3_REG_ATTACK_DECAY … #define OPL3_ATTACK_MASK … #define OPL3_DECAY_MASK … /* * Sustain level / Release rate (0x80 to 0x95) */ #define OPL3_REG_SUSTAIN_RELEASE … #define OPL3_SUSTAIN_MASK … #define OPL3_RELEASE_MASK … /* * Wave select (0xE0 to 0xF5) */ #define OPL3_REG_WAVE_SELECT … #define OPL3_WAVE_SELECT_MASK … /* * 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 … /* * F-number high bits / Key on / Block (octave) (0xB0 to 0xB8) */ #define OPL3_REG_KEYON_BLOCK … #define OPL3_KEYON_BIT … #define OPL3_BLOCKNUM_MASK … #define OPL3_FNUM_HIGH_MASK … /* * 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 … #define OPL3_FEEDBACK_MASK … #define OPL3_CONNECTION_BIT … /* * 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 … #define OPL3_VOICE_TO_LEFT … #define OPL3_VOICE_TO_RIGHT … /* */ #define OPL3_LEFT … #define OPL3_RIGHT … #define OPL3_HW_AUTO … #define OPL3_HW_OPL2 … #define OPL3_HW_OPL3 … #define OPL3_HW_OPL3_SV … #define OPL3_HW_OPL3_CS … #define OPL3_HW_OPL3_FM801 … #define OPL3_HW_OPL3_CS4281 … #define OPL3_HW_OPL4 … #define OPL3_HW_OPL4_ML … #define OPL3_HW_MASK … #define MAX_OPL2_VOICES … #define MAX_OPL3_VOICES … struct snd_opl3; /* * Instrument record, aka "Patch" */ /* FM operator */ struct fm_operator { … } __packed; /* Instrument data */ struct fm_instrument { … }; /* type */ #define FM_PATCH_OPL2 … #define FM_PATCH_OPL3 … /* Instrument record */ struct fm_patch { … }; /* * A structure to keep track of each hardware voice */ struct snd_opl3_voice { … }; struct snd_opl3 { … }; /* 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 … static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {} #endif #endif /* __SOUND_OPL3_H */
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