[linux-block.git] / sound / drivers / opl3 / opl3_synth.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) by Uros Bizjak <uros@kss-loka.si>
 *                   
 *  Routines for OPL2/OPL3/OPL4 control
 */

#include <linux/slab.h>
#include <linux/export.h>
#include <linux/nospec.h>
#include <sound/opl3.h>
#include <sound/asound_fm.h>
#include "opl3_voice.h"

#if IS_ENABLED(CONFIG_SND_SEQUENCER)
#define OPL3_SUPPORT_SYNTH
#endif

/*
 *    There is 18 possible 2 OP voices
 *      (9 in the left and 9 in the right).
 *      The first OP is the modulator and 2nd is the carrier.
 *
 *      The first three voices in the both sides may be connected
 *      with another voice to a 4 OP voice. For example voice 0
 *      can be connected with voice 3. The operators of voice 3 are
 *      used as operators 3 and 4 of the new 4 OP voice.
 *      In this case the 2 OP voice number 0 is the 'first half' and
 *      voice 3 is the second.
 */


/*
 *    Register offset table for OPL2/3 voices,
 *    OPL2 / one OPL3 register array side only
 */

char snd_opl3_regmap[MAX_OPL2_VOICES][4] =
{
/*	  OP1   OP2   OP3   OP4		*/
/*	 ------------------------	*/
	{ 0x00, 0x03, 0x08, 0x0b },
	{ 0x01, 0x04, 0x09, 0x0c },
	{ 0x02, 0x05, 0x0a, 0x0d },

	{ 0x08, 0x0b, 0x00, 0x00 },
	{ 0x09, 0x0c, 0x00, 0x00 },
	{ 0x0a, 0x0d, 0x00, 0x00 },

	{ 0x10, 0x13, 0x00, 0x00 },	/* used by percussive voices */
	{ 0x11, 0x14, 0x00, 0x00 },	/* if the percussive mode */
	{ 0x12, 0x15, 0x00, 0x00 }	/* is selected (only left reg block) */
};

EXPORT_SYMBOL(snd_opl3_regmap);

/*
 * prototypes
 */
static int snd_opl3_play_note(struct snd_opl3 * opl3, struct snd_dm_fm_note * note);
static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * voice);
static int snd_opl3_set_params(struct snd_opl3 * opl3, struct snd_dm_fm_params * params);
static int snd_opl3_set_mode(struct snd_opl3 * opl3, int mode);
static int snd_opl3_set_connection(struct snd_opl3 * opl3, int connection);

/* ------------------------------ */

/*
 * open the device exclusively
 */
int snd_opl3_open(struct snd_hwdep * hw, struct file *file)
{
	return 0;
}

/*
 * ioctl for hwdep device:
 */
int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
		   unsigned int cmd, unsigned long arg)
{
	struct snd_opl3 *opl3 = hw->private_data;
	void __user *argp = (void __user *)arg;

	if (snd_BUG_ON(!opl3))
		return -EINVAL;

	switch (cmd) {
		/* get information */
	case SNDRV_DM_FM_IOCTL_INFO:
		{
			struct snd_dm_fm_info info;

			info.fm_mode = opl3->fm_mode;
			info.rhythm = opl3->rhythm;
			if (copy_to_user(argp, &info, sizeof(struct snd_dm_fm_info)))
				return -EFAULT;
			return 0;
		}

	case SNDRV_DM_FM_IOCTL_RESET:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_RESET:
#endif
		snd_opl3_reset(opl3);
		return 0;

	case SNDRV_DM_FM_IOCTL_PLAY_NOTE:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_PLAY_NOTE:
#endif
		{
			struct snd_dm_fm_note note;
			if (copy_from_user(&note, argp, sizeof(struct snd_dm_fm_note)))
				return -EFAULT;
			return snd_opl3_play_note(opl3, &note);
		}

	case SNDRV_DM_FM_IOCTL_SET_VOICE:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_SET_VOICE:
#endif
		{
			struct snd_dm_fm_voice voice;
			if (copy_from_user(&voice, argp, sizeof(struct snd_dm_fm_voice)))
				return -EFAULT;
			return snd_opl3_set_voice(opl3, &voice);
		}

	case SNDRV_DM_FM_IOCTL_SET_PARAMS:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_SET_PARAMS:
#endif
		{
			struct snd_dm_fm_params params;
			if (copy_from_user(&params, argp, sizeof(struct snd_dm_fm_params)))
				return -EFAULT;
			return snd_opl3_set_params(opl3, &params);
		}

	case SNDRV_DM_FM_IOCTL_SET_MODE:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_SET_MODE:
#endif
		return snd_opl3_set_mode(opl3, (int) arg);

	case SNDRV_DM_FM_IOCTL_SET_CONNECTION:
#ifdef CONFIG_SND_OSSEMUL
	case SNDRV_DM_FM_OSS_IOCTL_SET_OPL:
#endif
		return snd_opl3_set_connection(opl3, (int) arg);

#ifdef OPL3_SUPPORT_SYNTH
	case SNDRV_DM_FM_IOCTL_CLEAR_PATCHES:
		snd_opl3_clear_patches(opl3);
		return 0;
#endif

#ifdef CONFIG_SND_DEBUG
	default:
		snd_printk(KERN_WARNING "unknown IOCTL: 0x%x\n", cmd);
#endif
	}
	return -ENOTTY;
}

/*
 * close the device
 */
int snd_opl3_release(struct snd_hwdep * hw, struct file *file)
{
	struct snd_opl3 *opl3 = hw->private_data;

	snd_opl3_reset(opl3);
	return 0;
}

#ifdef OPL3_SUPPORT_SYNTH
/*
 * write the device - load patches
 */
long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
		    loff_t *offset)
{
	struct snd_opl3 *opl3 = hw->private_data;
	long result = 0;
	int err = 0;
	struct sbi_patch inst;

	while (count >= sizeof(inst)) {
		unsigned char type;
		if (copy_from_user(&inst, buf, sizeof(inst)))
			return -EFAULT;
		if (!memcmp(inst.key, FM_KEY_SBI, 4) ||
		    !memcmp(inst.key, FM_KEY_2OP, 4))
			type = FM_PATCH_OPL2;
		else if (!memcmp(inst.key, FM_KEY_4OP, 4))
			type = FM_PATCH_OPL3;
		else /* invalid type */
			break;
		err = snd_opl3_load_patch(opl3, inst.prog, inst.bank, type,
					  inst.name, inst.extension,
					  inst.data);
		if (err < 0)
			break;
		result += sizeof(inst);
		count -= sizeof(inst);
	}
	return result > 0 ? result : err;
}


/*
 * Patch management
 */

/* offsets for SBI params */
#define AM_VIB		0
#define KSL_LEVEL	2
#define ATTACK_DECAY	4
#define SUSTAIN_RELEASE	6
#define WAVE_SELECT	8

/* offset for SBI instrument */
#define CONNECTION	10
#define OFFSET_4OP	11

/*
 * load a patch, obviously.
 *
 * loaded on the given program and bank numbers with the given type
 * (FM_PATCH_OPLx).
 * data is the pointer of SBI record _without_ header (key and name).
 * name is the name string of the patch.
 * ext is the extension data of 7 bytes long (stored in name of SBI
 * data up to offset 25), or NULL to skip.
 * return 0 if successful or a negative error code.
 */
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 *patch;
	int i;

	patch = snd_opl3_find_patch(opl3, prog, bank, 1);
	if (!patch)
		return -ENOMEM;

	patch->type = type;

	for (i = 0; i < 2; i++) {
		patch->inst.op[i].am_vib = data[AM_VIB + i];
		patch->inst.op[i].ksl_level = data[KSL_LEVEL + i];
		patch->inst.op[i].attack_decay = data[ATTACK_DECAY + i];
		patch->inst.op[i].sustain_release = data[SUSTAIN_RELEASE + i];
		patch->inst.op[i].wave_select = data[WAVE_SELECT + i];
	}
	patch->inst.feedback_connection[0] = data[CONNECTION];

	if (type == FM_PATCH_OPL3) {
		for (i = 0; i < 2; i++) {
			patch->inst.op[i+2].am_vib =
				data[OFFSET_4OP + AM_VIB + i];
			patch->inst.op[i+2].ksl_level =
				data[OFFSET_4OP + KSL_LEVEL + i];
			patch->inst.op[i+2].attack_decay =
				data[OFFSET_4OP + ATTACK_DECAY + i];
			patch->inst.op[i+2].sustain_release =
				data[OFFSET_4OP + SUSTAIN_RELEASE + i];
			patch->inst.op[i+2].wave_select =
				data[OFFSET_4OP + WAVE_SELECT + i];
		}
		patch->inst.feedback_connection[1] =
			data[OFFSET_4OP + CONNECTION];
	}

	if (ext) {
		patch->inst.echo_delay = ext[0];
		patch->inst.echo_atten = ext[1];
		patch->inst.chorus_spread = ext[2];
		patch->inst.trnsps = ext[3];
		patch->inst.fix_dur = ext[4];
		patch->inst.modes = ext[5];
		patch->inst.fix_key = ext[6];
	}

	if (name)
		strlcpy(patch->name, name, sizeof(patch->name));

	return 0;
}
EXPORT_SYMBOL(snd_opl3_load_patch);

/*
 * find a patch with the given program and bank numbers, returns its pointer
 * if no matching patch is found and create_patch is set, it creates a
 * new patch object.
 */
struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank,
				     int create_patch)
{
	/* pretty dumb hash key */
	unsigned int key = (prog + bank) % OPL3_PATCH_HASH_SIZE;
	struct fm_patch *patch;

	for (patch = opl3->patch_table[key]; patch; patch = patch->next) {
		if (patch->prog == prog && patch->bank == bank)
			return patch;
	}
	if (!create_patch)
		return NULL;

	patch = kzalloc(sizeof(*patch), GFP_KERNEL);
	if (!patch)
		return NULL;
	patch->prog = prog;
	patch->bank = bank;
	patch->next = opl3->patch_table[key];
	opl3->patch_table[key] = patch;
	return patch;
}
EXPORT_SYMBOL(snd_opl3_find_patch);

/*
 * Clear all patches of the given OPL3 instance
 */
void snd_opl3_clear_patches(struct snd_opl3 *opl3)
{
	int i;
	for (i = 0; i <  OPL3_PATCH_HASH_SIZE; i++) {
		struct fm_patch *patch, *next;
		for (patch = opl3->patch_table[i]; patch; patch = next) {
			next = patch->next;
			kfree(patch);
		}
	}
	memset(opl3->patch_table, 0, sizeof(opl3->patch_table));
}
#endif /* OPL3_SUPPORT_SYNTH */

/* ------------------------------ */

void snd_opl3_reset(struct snd_opl3 * opl3)
{
	unsigned short opl3_reg;

	unsigned short reg_side;
	unsigned char voice_offset;

	int max_voices, i;

	max_voices = (opl3->hardware < OPL3_HW_OPL3) ?
		MAX_OPL2_VOICES : MAX_OPL3_VOICES;

	for (i = 0; i < max_voices; i++) {
		/* Get register array side and offset of voice */
		if (i < MAX_OPL2_VOICES) {
			/* Left register block for voices 0 .. 8 */
			reg_side = OPL3_LEFT;
			voice_offset = i;
		} else {
			/* Right register block for voices 9 .. 17 */
			reg_side = OPL3_RIGHT;
			voice_offset = i - MAX_OPL2_VOICES;
		}
		opl3_reg = reg_side | (OPL3_REG_KSL_LEVEL + snd_opl3_regmap[voice_offset][0]);
		opl3->command(opl3, opl3_reg, OPL3_TOTAL_LEVEL_MASK); /* Operator 1 volume */
		opl3_reg = reg_side | (OPL3_REG_KSL_LEVEL + snd_opl3_regmap[voice_offset][1]);
		opl3->command(opl3, opl3_reg, OPL3_TOTAL_LEVEL_MASK); /* Operator 2 volume */

		opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
		opl3->command(opl3, opl3_reg, 0x00);	/* Note off */
	}

	opl3->max_voices = MAX_OPL2_VOICES;
	opl3->fm_mode = SNDRV_DM_FM_MODE_OPL2;

	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TEST, OPL3_ENABLE_WAVE_SELECT);
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, 0x00);	/* Melodic mode */
	opl3->rhythm = 0;
}

EXPORT_SYMBOL(snd_opl3_reset);

static int snd_opl3_play_note(struct snd_opl3 * opl3, struct snd_dm_fm_note * note)
{
	unsigned short reg_side;
	unsigned char voice_offset;

	unsigned short opl3_reg;
	unsigned char reg_val;

	/* Voices 0 -  8 in OPL2 mode */
	/* Voices 0 - 17 in OPL3 mode */
	if (note->voice >= ((opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) ?
			    MAX_OPL3_VOICES : MAX_OPL2_VOICES))
		return -EINVAL;

	/* Get register array side and offset of voice */
	if (note->voice < MAX_OPL2_VOICES) {
		/* Left register block for voices 0 .. 8 */
		reg_side = OPL3_LEFT;
		voice_offset = note->voice;
	} else {
		/* Right register block for voices 9 .. 17 */
		reg_side = OPL3_RIGHT;
		voice_offset = note->voice - MAX_OPL2_VOICES;
	}

	/* Set lower 8 bits of note frequency */
	reg_val = (unsigned char) note->fnum;
	opl3_reg = reg_side | (OPL3_REG_FNUM_LOW + voice_offset);
	opl3->command(opl3, opl3_reg, reg_val);
	
	reg_val = 0x00;
	/* Set output sound flag */
	if (note->key_on)
		reg_val |= OPL3_KEYON_BIT;
	/* Set octave */
	reg_val |= (note->octave << 2) & OPL3_BLOCKNUM_MASK;
	/* Set higher 2 bits of note frequency */
	reg_val |= (unsigned char) (note->fnum >> 8) & OPL3_FNUM_HIGH_MASK;

	/* Set OPL3 KEYON_BLOCK register of requested voice */ 
	opl3_reg = reg_side | (OPL3_REG_KEYON_BLOCK + voice_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	return 0;
}


static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * voice)
{
	unsigned short reg_side;
	unsigned char op_offset;
	unsigned char voice_offset, voice_op;

	unsigned short opl3_reg;
	unsigned char reg_val;

	/* Only operators 1 and 2 */
	if (voice->op > 1)
		return -EINVAL;
	/* Voices 0 -  8 in OPL2 mode */
	/* Voices 0 - 17 in OPL3 mode */
	if (voice->voice >= ((opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) ?
			     MAX_OPL3_VOICES : MAX_OPL2_VOICES))
		return -EINVAL;

	/* Get register array side and offset of voice */
	if (voice->voice < MAX_OPL2_VOICES) {
		/* Left register block for voices 0 .. 8 */
		reg_side = OPL3_LEFT;
		voice_offset = voice->voice;
	} else {
		/* Right register block for voices 9 .. 17 */
		reg_side = OPL3_RIGHT;
		voice_offset = voice->voice - MAX_OPL2_VOICES;
	}
	/* Get register offset of operator */
	voice_offset = array_index_nospec(voice_offset, MAX_OPL2_VOICES);
	voice_op = array_index_nospec(voice->op, 4);
	op_offset = snd_opl3_regmap[voice_offset][voice_op];

	reg_val = 0x00;
	/* Set amplitude modulation (tremolo) effect */
	if (voice->am)
		reg_val |= OPL3_TREMOLO_ON;
	/* Set vibrato effect */
	if (voice->vibrato)
		reg_val |= OPL3_VIBRATO_ON;
	/* Set sustaining sound phase */
	if (voice->do_sustain)
		reg_val |= OPL3_SUSTAIN_ON;
	/* Set keyboard scaling bit */ 
	if (voice->kbd_scale)
		reg_val |= OPL3_KSR;
	/* Set harmonic or frequency multiplier */
	reg_val |= voice->harmonic & OPL3_MULTIPLE_MASK;

	/* Set OPL3 AM_VIB register of requested voice/operator */ 
	opl3_reg = reg_side | (OPL3_REG_AM_VIB + op_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	/* Set decreasing volume of higher notes */
	reg_val = (voice->scale_level << 6) & OPL3_KSL_MASK;
	/* Set output volume */
	reg_val |= ~voice->volume & OPL3_TOTAL_LEVEL_MASK;

	/* Set OPL3 KSL_LEVEL register of requested voice/operator */ 
	opl3_reg = reg_side | (OPL3_REG_KSL_LEVEL + op_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	/* Set attack phase level */
	reg_val = (voice->attack << 4) & OPL3_ATTACK_MASK;
	/* Set decay phase level */
	reg_val |= voice->decay & OPL3_DECAY_MASK;

	/* Set OPL3 ATTACK_DECAY register of requested voice/operator */ 
	opl3_reg = reg_side | (OPL3_REG_ATTACK_DECAY + op_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	/* Set sustain phase level */
	reg_val = (voice->sustain << 4) & OPL3_SUSTAIN_MASK;
	/* Set release phase level */
	reg_val |= voice->release & OPL3_RELEASE_MASK;

	/* Set OPL3 SUSTAIN_RELEASE register of requested voice/operator */ 
	opl3_reg = reg_side | (OPL3_REG_SUSTAIN_RELEASE + op_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	/* Set inter-operator feedback */
	reg_val = (voice->feedback << 1) & OPL3_FEEDBACK_MASK;
	/* Set inter-operator connection */
	if (voice->connection)
		reg_val |= OPL3_CONNECTION_BIT;
	/* OPL-3 only */
	if (opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) {
		if (voice->left)
			reg_val |= OPL3_VOICE_TO_LEFT;
		if (voice->right)
			reg_val |= OPL3_VOICE_TO_RIGHT;
	}
	/* Feedback/connection bits are applicable to voice */
	opl3_reg = reg_side | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	/* Select waveform */
	reg_val = voice->waveform & OPL3_WAVE_SELECT_MASK;
	opl3_reg = reg_side | (OPL3_REG_WAVE_SELECT + op_offset);
	opl3->command(opl3, opl3_reg, reg_val);

	return 0;
}

static int snd_opl3_set_params(struct snd_opl3 * opl3, struct snd_dm_fm_params * params)
{
	unsigned char reg_val;

	reg_val = 0x00;
	/* Set keyboard split method */
	if (params->kbd_split)
		reg_val |= OPL3_KEYBOARD_SPLIT;
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_KBD_SPLIT, reg_val);

	reg_val = 0x00;
	/* Set amplitude modulation (tremolo) depth */
	if (params->am_depth)
		reg_val |= OPL3_TREMOLO_DEPTH;
	/* Set vibrato depth */
	if (params->vib_depth)
		reg_val |= OPL3_VIBRATO_DEPTH;
	/* Set percussion mode */
	if (params->rhythm) {
		reg_val |= OPL3_PERCUSSION_ENABLE;
		opl3->rhythm = 1;
	} else {
		opl3->rhythm = 0;
	}
	/* Play percussion instruments */
	if (params->bass)
		reg_val |= OPL3_BASSDRUM_ON;
	if (params->snare)
		reg_val |= OPL3_SNAREDRUM_ON;
	if (params->tomtom)
		reg_val |= OPL3_TOMTOM_ON;
	if (params->cymbal)
		reg_val |= OPL3_CYMBAL_ON;
	if (params->hihat)
		reg_val |= OPL3_HIHAT_ON;

	opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, reg_val);
	return 0;
}

static int snd_opl3_set_mode(struct snd_opl3 * opl3, int mode)
{
	if ((mode == SNDRV_DM_FM_MODE_OPL3) && (opl3->hardware < OPL3_HW_OPL3))
		return -EINVAL;

	opl3->fm_mode = mode;
	if (opl3->hardware >= OPL3_HW_OPL3)
		opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT, 0x00);	/* Clear 4-op connections */

	return 0;
}

static int snd_opl3_set_connection(struct snd_opl3 * opl3, int connection)
{
	unsigned char reg_val;

	/* OPL-3 only */
	if (opl3->fm_mode != SNDRV_DM_FM_MODE_OPL3)
		return -EINVAL;

	reg_val = connection & (OPL3_RIGHT_4OP_0 | OPL3_RIGHT_4OP_1 | OPL3_RIGHT_4OP_2 |
				OPL3_LEFT_4OP_0 | OPL3_LEFT_4OP_1 | OPL3_LEFT_4OP_2);
	/* Set 4-op connections */
	opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT, reg_val);

	return 0;
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* Copyright (c) by Uros Bizjak <uros@kss-loka.si>
	4	*
	5	* Routines for OPL2/OPL3/OPL4 control
1da177e4 LT	6	*/
1da177e4 LT	7
5a0e3ad6	8	#include <linux/slab.h>
d81a6d71	9	#include <linux/export.h>
7f054a5b	10	#include <linux/nospec.h>
1da177e4 LT	11	#include <sound/opl3.h>
1da177e4 LT	12	#include <sound/asound_fm.h>
7e9c20f4	13	#include "opl3_voice.h"
1da177e4	14
8eeaa2f9	15	#if IS_ENABLED(CONFIG_SND_SEQUENCER)
0ee46c9d TI	16	#define OPL3_SUPPORT_SYNTH
	17	#endif
	18
1da177e4 LT	19	/*
	20	* There is 18 possible 2 OP voices
	21	* (9 in the left and 9 in the right).
	22	* The first OP is the modulator and 2nd is the carrier.
	23	*
	24	* The first three voices in the both sides may be connected
	25	* with another voice to a 4 OP voice. For example voice 0
	26	* can be connected with voice 3. The operators of voice 3 are
	27	* used as operators 3 and 4 of the new 4 OP voice.
	28	* In this case the 2 OP voice number 0 is the 'first half' and
	29	* voice 3 is the second.
	30	*/
	31
	32
	33	/*
	34	* Register offset table for OPL2/3 voices,
	35	* OPL2 / one OPL3 register array side only
	36	*/
	37
	38	char snd_opl3_regmap[MAX_OPL2_VOICES][4] =
	39	{
	40	/* OP1 OP2 OP3 OP4 */
	41	/* ------------------------ */
	42	{ 0x00, 0x03, 0x08, 0x0b },
	43	{ 0x01, 0x04, 0x09, 0x0c },
	44	{ 0x02, 0x05, 0x0a, 0x0d },
	45
	46	{ 0x08, 0x0b, 0x00, 0x00 },
	47	{ 0x09, 0x0c, 0x00, 0x00 },
	48	{ 0x0a, 0x0d, 0x00, 0x00 },
	49
	50	{ 0x10, 0x13, 0x00, 0x00 }, /* used by percussive voices */
	51	{ 0x11, 0x14, 0x00, 0x00 }, /* if the percussive mode */
	52	{ 0x12, 0x15, 0x00, 0x00 } /* is selected (only left reg block) */
	53	};
	54
ac19e19b TI	55	EXPORT_SYMBOL(snd_opl3_regmap);
ac19e19b TI	56
1da177e4 LT	57	/*
	58	* prototypes
	59	*/
5b1646a8 TI	60	static int snd_opl3_play_note(struct snd_opl3 * opl3, struct snd_dm_fm_note * note);
	61	static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * voice);
	62	static int snd_opl3_set_params(struct snd_opl3 * opl3, struct snd_dm_fm_params * params);
	63	static int snd_opl3_set_mode(struct snd_opl3 * opl3, int mode);
	64	static int snd_opl3_set_connection(struct snd_opl3 * opl3, int connection);
1da177e4 LT	65
	66	/* ------------------------------ */
	67
	68	/*
	69	* open the device exclusively
	70	*/
5b1646a8	71	int snd_opl3_open(struct snd_hwdep * hw, struct file *file)
1da177e4	72	{
1da177e4 LT	73	return 0;
	74	}
	75
	76	/*
	77	* ioctl for hwdep device:
	78	*/
5b1646a8	79	int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
1da177e4 LT	80	unsigned int cmd, unsigned long arg)
1da177e4 LT	81	{
5b1646a8	82	struct snd_opl3 *opl3 = hw->private_data;
1da177e4 LT	83	void __user argp = (void __user )arg;
1da177e4 LT	84
5e246b85 TI	85	if (snd_BUG_ON(!opl3))
5e246b85 TI	86	return -EINVAL;
1da177e4 LT	87
	88	switch (cmd) {
	89	/* get information */
	90	case SNDRV_DM_FM_IOCTL_INFO:
	91	{
5b1646a8	92	struct snd_dm_fm_info info;
1da177e4 LT	93
	94	info.fm_mode = opl3->fm_mode;
	95	info.rhythm = opl3->rhythm;
5b1646a8	96	if (copy_to_user(argp, &info, sizeof(struct snd_dm_fm_info)))
1da177e4 LT	97	return -EFAULT;
	98	return 0;
	99	}
	100
	101	case SNDRV_DM_FM_IOCTL_RESET:
	102	#ifdef CONFIG_SND_OSSEMUL
	103	case SNDRV_DM_FM_OSS_IOCTL_RESET:
	104	#endif
	105	snd_opl3_reset(opl3);
	106	return 0;
	107
	108	case SNDRV_DM_FM_IOCTL_PLAY_NOTE:
	109	#ifdef CONFIG_SND_OSSEMUL
	110	case SNDRV_DM_FM_OSS_IOCTL_PLAY_NOTE:
	111	#endif
	112	{
5b1646a8 TI	113	struct snd_dm_fm_note note;
5b1646a8 TI	114	if (copy_from_user(&note, argp, sizeof(struct snd_dm_fm_note)))
1da177e4 LT	115	return -EFAULT;
	116	return snd_opl3_play_note(opl3, &note);
	117	}
	118
	119	case SNDRV_DM_FM_IOCTL_SET_VOICE:
	120	#ifdef CONFIG_SND_OSSEMUL
	121	case SNDRV_DM_FM_OSS_IOCTL_SET_VOICE:
	122	#endif
	123	{
5b1646a8 TI	124	struct snd_dm_fm_voice voice;
5b1646a8 TI	125	if (copy_from_user(&voice, argp, sizeof(struct snd_dm_fm_voice)))
1da177e4 LT	126	return -EFAULT;
	127	return snd_opl3_set_voice(opl3, &voice);
	128	}
	129
	130	case SNDRV_DM_FM_IOCTL_SET_PARAMS:
	131	#ifdef CONFIG_SND_OSSEMUL
	132	case SNDRV_DM_FM_OSS_IOCTL_SET_PARAMS:
	133	#endif
	134	{
5b1646a8 TI	135	struct snd_dm_fm_params params;
5b1646a8 TI	136	if (copy_from_user(&params, argp, sizeof(struct snd_dm_fm_params)))
1da177e4 LT	137	return -EFAULT;
	138	return snd_opl3_set_params(opl3, &params);
	139	}
	140
	141	case SNDRV_DM_FM_IOCTL_SET_MODE:
	142	#ifdef CONFIG_SND_OSSEMUL
	143	case SNDRV_DM_FM_OSS_IOCTL_SET_MODE:
	144	#endif
	145	return snd_opl3_set_mode(opl3, (int) arg);
	146
	147	case SNDRV_DM_FM_IOCTL_SET_CONNECTION:
	148	#ifdef CONFIG_SND_OSSEMUL
	149	case SNDRV_DM_FM_OSS_IOCTL_SET_OPL:
	150	#endif
	151	return snd_opl3_set_connection(opl3, (int) arg);
	152
0ee46c9d	153	#ifdef OPL3_SUPPORT_SYNTH
224a0332 TI	154	case SNDRV_DM_FM_IOCTL_CLEAR_PATCHES:
	155	snd_opl3_clear_patches(opl3);
	156	return 0;
0ee46c9d	157	#endif
224a0332	158
1da177e4 LT	159	#ifdef CONFIG_SND_DEBUG
1da177e4 LT	160	default:
45203832	161	snd_printk(KERN_WARNING "unknown IOCTL: 0x%x\n", cmd);
1da177e4 LT	162	#endif
	163	}
	164	return -ENOTTY;
	165	}
	166
	167	/*
	168	* close the device
	169	*/
5b1646a8	170	int snd_opl3_release(struct snd_hwdep * hw, struct file *file)
1da177e4	171	{
5b1646a8	172	struct snd_opl3 *opl3 = hw->private_data;
1da177e4 LT	173
1da177e4 LT	174	snd_opl3_reset(opl3);
1da177e4 LT	175	return 0;
	176	}
	177
0ee46c9d	178	#ifdef OPL3_SUPPORT_SYNTH
224a0332 TI	179	/*
	180	* write the device - load patches
	181	*/
	182	long snd_opl3_write(struct snd_hwdep hw, const char __user buf, long count,
	183	loff_t *offset)
	184	{
	185	struct snd_opl3 *opl3 = hw->private_data;
	186	long result = 0;
	187	int err = 0;
	188	struct sbi_patch inst;
	189
	190	while (count >= sizeof(inst)) {
	191	unsigned char type;
	192	if (copy_from_user(&inst, buf, sizeof(inst)))
	193	return -EFAULT;
	194	if (!memcmp(inst.key, FM_KEY_SBI, 4) \|\|
	195	!memcmp(inst.key, FM_KEY_2OP, 4))
	196	type = FM_PATCH_OPL2;
	197	else if (!memcmp(inst.key, FM_KEY_4OP, 4))
	198	type = FM_PATCH_OPL3;
	199	else /* invalid type */
	200	break;
	201	err = snd_opl3_load_patch(opl3, inst.prog, inst.bank, type,
	202	inst.name, inst.extension,
	203	inst.data);
	204	if (err < 0)
	205	break;
	206	result += sizeof(inst);
	207	count -= sizeof(inst);
	208	}
	209	return result > 0 ? result : err;
	210	}
	211
	212
	213	/*
	214	* Patch management
	215	*/
	216
	217	/* offsets for SBI params */
	218	#define AM_VIB 0
	219	#define KSL_LEVEL 2
	220	#define ATTACK_DECAY 4
	221	#define SUSTAIN_RELEASE 6
	222	#define WAVE_SELECT 8
	223
	224	/* offset for SBI instrument */
	225	#define CONNECTION 10
	226	#define OFFSET_4OP 11
	227
	228	/*
	229	* load a patch, obviously.
	230	*
	231	* loaded on the given program and bank numbers with the given type
	232	* (FM_PATCH_OPLx).
	233	* data is the pointer of SBI record _without_ header (key and name).
	234	* name is the name string of the patch.
	235	* ext is the extension data of 7 bytes long (stored in name of SBI
	236	* data up to offset 25), or NULL to skip.
	237	* return 0 if successful or a negative error code.
	238	*/
	239	int snd_opl3_load_patch(struct snd_opl3 *opl3,
	240	int prog, int bank, int type,
	241	const char *name,
	242	const unsigned char *ext,
243	const unsigned char *data)
244	{
245	struct fm_patch *patch;
246	int i;
247
248	patch = snd_opl3_find_patch(opl3, prog, bank, 1);
249	if (!patch)
250	return -ENOMEM;
251
252	patch->type = type;
253
254	for (i = 0; i < 2; i++) {
255	patch->inst.op[i].am_vib = data[AM_VIB + i];
256	patch->inst.op[i].ksl_level = data[KSL_LEVEL + i];
257	patch->inst.op[i].attack_decay = data[ATTACK_DECAY + i];
258	patch->inst.op[i].sustain_release = data[SUSTAIN_RELEASE + i];
259	patch->inst.op[i].wave_select = data[WAVE_SELECT + i];
260	}
261	patch->inst.feedback_connection[0] = data[CONNECTION];
262
263	if (type == FM_PATCH_OPL3) {
264	for (i = 0; i < 2; i++) {
265	patch->inst.op[i+2].am_vib =
266	data[OFFSET_4OP + AM_VIB + i];
267	patch->inst.op[i+2].ksl_level =
268	data[OFFSET_4OP + KSL_LEVEL + i];
269	patch->inst.op[i+2].attack_decay =
270	data[OFFSET_4OP + ATTACK_DECAY + i];
271	patch->inst.op[i+2].sustain_release =
272	data[OFFSET_4OP + SUSTAIN_RELEASE + i];
273	patch->inst.op[i+2].wave_select =
274	data[OFFSET_4OP + WAVE_SELECT + i];
275	}
276	patch->inst.feedback_connection[1] =
277	data[OFFSET_4OP + CONNECTION];
278	}
279
280	if (ext) {
281	patch->inst.echo_delay = ext[0];
282	patch->inst.echo_atten = ext[1];
283	patch->inst.chorus_spread = ext[2];
284	patch->inst.trnsps = ext[3];
285	patch->inst.fix_dur = ext[4];
286	patch->inst.modes = ext[5];
287	patch->inst.fix_key = ext[6];
288	}
289
290	if (name)
291	strlcpy(patch->name, name, sizeof(patch->name));
292
293	return 0;
294	}
295	EXPORT_SYMBOL(snd_opl3_load_patch);
296
297	/*
298	* find a patch with the given program and bank numbers, returns its pointer
299	* if no matching patch is found and create_patch is set, it creates a
300	* new patch object.
301	*/
302	struct fm_patch snd_opl3_find_patch(struct snd_opl3 opl3, int prog, int bank,
303	int create_patch)
304	{
305	/* pretty dumb hash key */
306	unsigned int key = (prog + bank) % OPL3_PATCH_HASH_SIZE;
307	struct fm_patch *patch;
308
309	for (patch = opl3->patch_table[key]; patch; patch = patch->next) {
310	if (patch->prog == prog && patch->bank == bank)
311	return patch;
312	}
313	if (!create_patch)
314	return NULL;
315
316	patch = kzalloc(sizeof(*patch), GFP_KERNEL);
317	if (!patch)
318	return NULL;
319	patch->prog = prog;
320	patch->bank = bank;
321	patch->next = opl3->patch_table[key];
322	opl3->patch_table[key] = patch;
323	return patch;
324	}
325	EXPORT_SYMBOL(snd_opl3_find_patch);
326
327	/*
328	* Clear all patches of the given OPL3 instance
329	*/
330	void snd_opl3_clear_patches(struct snd_opl3 *opl3)
331	{
332	int i;
333	for (i = 0; i < OPL3_PATCH_HASH_SIZE; i++) {
334	struct fm_patch patch, next;
335	for (patch = opl3->patch_table[i]; patch; patch = next) {
336	next = patch->next;
337	kfree(patch);
338	}
339	}
340	memset(opl3->patch_table, 0, sizeof(opl3->patch_table));
341	}
0ee46c9d	342	#endif /* OPL3_SUPPORT_SYNTH */
224a0332	343
1da177e4 LT	344	/* ------------------------------ */
1da177e4 LT	345
5b1646a8	346	void snd_opl3_reset(struct snd_opl3 * opl3)
1da177e4 LT	347	{
	348	unsigned short opl3_reg;
	349
	350	unsigned short reg_side;
	351	unsigned char voice_offset;
	352
	353	int max_voices, i;
	354
	355	max_voices = (opl3->hardware < OPL3_HW_OPL3) ?
	356	MAX_OPL2_VOICES : MAX_OPL3_VOICES;
	357
	358	for (i = 0; i < max_voices; i++) {
	359	/* Get register array side and offset of voice */
	360	if (i < MAX_OPL2_VOICES) {
	361	/* Left register block for voices 0 .. 8 */
	362	reg_side = OPL3_LEFT;
	363	voice_offset = i;
	364	} else {
	365	/* Right register block for voices 9 .. 17 */
	366	reg_side = OPL3_RIGHT;
	367	voice_offset = i - MAX_OPL2_VOICES;
	368	}
	369	opl3_reg = reg_side \| (OPL3_REG_KSL_LEVEL + snd_opl3_regmap[voice_offset][0]);
	370	opl3->command(opl3, opl3_reg, OPL3_TOTAL_LEVEL_MASK); /* Operator 1 volume */
	371	opl3_reg = reg_side \| (OPL3_REG_KSL_LEVEL + snd_opl3_regmap[voice_offset][1]);
	372	opl3->command(opl3, opl3_reg, OPL3_TOTAL_LEVEL_MASK); /* Operator 2 volume */
	373
	374	opl3_reg = reg_side \| (OPL3_REG_KEYON_BLOCK + voice_offset);
	375	opl3->command(opl3, opl3_reg, 0x00); /* Note off */
	376	}
	377
	378	opl3->max_voices = MAX_OPL2_VOICES;
	379	opl3->fm_mode = SNDRV_DM_FM_MODE_OPL2;
	380
	381	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TEST, OPL3_ENABLE_WAVE_SELECT);
	382	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_PERCUSSION, 0x00); /* Melodic mode */
	383	opl3->rhythm = 0;
	384	}
	385
ac19e19b	386	EXPORT_SYMBOL(snd_opl3_reset);
1da177e4	387
5b1646a8	388	static int snd_opl3_play_note(struct snd_opl3 * opl3, struct snd_dm_fm_note * note)
1da177e4 LT	389	{
	390	unsigned short reg_side;
	391	unsigned char voice_offset;
	392
	393	unsigned short opl3_reg;
	394	unsigned char reg_val;
	395
	396	/* Voices 0 - 8 in OPL2 mode */
	397	/* Voices 0 - 17 in OPL3 mode */
	398	if (note->voice >= ((opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) ?
	399	MAX_OPL3_VOICES : MAX_OPL2_VOICES))
	400	return -EINVAL;
	401
	402	/* Get register array side and offset of voice */
	403	if (note->voice < MAX_OPL2_VOICES) {
	404	/* Left register block for voices 0 .. 8 */
	405	reg_side = OPL3_LEFT;
	406	voice_offset = note->voice;
	407	} else {
	408	/* Right register block for voices 9 .. 17 */
	409	reg_side = OPL3_RIGHT;
	410	voice_offset = note->voice - MAX_OPL2_VOICES;
	411	}
	412
	413	/* Set lower 8 bits of note frequency */
	414	reg_val = (unsigned char) note->fnum;
	415	opl3_reg = reg_side \| (OPL3_REG_FNUM_LOW + voice_offset);
	416	opl3->command(opl3, opl3_reg, reg_val);
	417
	418	reg_val = 0x00;
	419	/* Set output sound flag */
	420	if (note->key_on)
	421	reg_val \|= OPL3_KEYON_BIT;
	422	/* Set octave */
	423	reg_val \|= (note->octave << 2) & OPL3_BLOCKNUM_MASK;
	424	/* Set higher 2 bits of note frequency */
	425	reg_val \|= (unsigned char) (note->fnum >> 8) & OPL3_FNUM_HIGH_MASK;
	426
	427	/* Set OPL3 KEYON_BLOCK register of requested voice */
	428	opl3_reg = reg_side \| (OPL3_REG_KEYON_BLOCK + voice_offset);
	429	opl3->command(opl3, opl3_reg, reg_val);
	430
	431	return 0;
	432	}
	433
	434
5b1646a8	435	static int snd_opl3_set_voice(struct snd_opl3 * opl3, struct snd_dm_fm_voice * voice)
1da177e4 LT	436	{
	437	unsigned short reg_side;
	438	unsigned char op_offset;
7f054a5b	439	unsigned char voice_offset, voice_op;
1da177e4 LT	440
	441	unsigned short opl3_reg;
	442	unsigned char reg_val;
	443
	444	/* Only operators 1 and 2 */
	445	if (voice->op > 1)
	446	return -EINVAL;
	447	/* Voices 0 - 8 in OPL2 mode */
	448	/* Voices 0 - 17 in OPL3 mode */
	449	if (voice->voice >= ((opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) ?
	450	MAX_OPL3_VOICES : MAX_OPL2_VOICES))
	451	return -EINVAL;
	452
	453	/* Get register array side and offset of voice */
	454	if (voice->voice < MAX_OPL2_VOICES) {
	455	/* Left register block for voices 0 .. 8 */
	456	reg_side = OPL3_LEFT;
	457	voice_offset = voice->voice;
	458	} else {
	459	/* Right register block for voices 9 .. 17 */
	460	reg_side = OPL3_RIGHT;
	461	voice_offset = voice->voice - MAX_OPL2_VOICES;
	462	}
	463	/* Get register offset of operator */
7f054a5b TI	464	voice_offset = array_index_nospec(voice_offset, MAX_OPL2_VOICES);
	465	voice_op = array_index_nospec(voice->op, 4);
	466	op_offset = snd_opl3_regmap[voice_offset][voice_op];
1da177e4 LT	467
	468	reg_val = 0x00;
	469	/* Set amplitude modulation (tremolo) effect */
	470	if (voice->am)
	471	reg_val \|= OPL3_TREMOLO_ON;
	472	/* Set vibrato effect */
	473	if (voice->vibrato)
	474	reg_val \|= OPL3_VIBRATO_ON;
	475	/* Set sustaining sound phase */
	476	if (voice->do_sustain)
	477	reg_val \|= OPL3_SUSTAIN_ON;
	478	/* Set keyboard scaling bit */
	479	if (voice->kbd_scale)
	480	reg_val \|= OPL3_KSR;
	481	/* Set harmonic or frequency multiplier */
	482	reg_val \|= voice->harmonic & OPL3_MULTIPLE_MASK;
	483
	484	/* Set OPL3 AM_VIB register of requested voice/operator */
	485	opl3_reg = reg_side \| (OPL3_REG_AM_VIB + op_offset);
	486	opl3->command(opl3, opl3_reg, reg_val);
	487
	488	/* Set decreasing volume of higher notes */
	489	reg_val = (voice->scale_level << 6) & OPL3_KSL_MASK;
	490	/* Set output volume */
	491	reg_val \|= ~voice->volume & OPL3_TOTAL_LEVEL_MASK;
	492
	493	/* Set OPL3 KSL_LEVEL register of requested voice/operator */
	494	opl3_reg = reg_side \| (OPL3_REG_KSL_LEVEL + op_offset);
	495	opl3->command(opl3, opl3_reg, reg_val);
	496
	497	/* Set attack phase level */
	498	reg_val = (voice->attack << 4) & OPL3_ATTACK_MASK;
	499	/* Set decay phase level */
	500	reg_val \|= voice->decay & OPL3_DECAY_MASK;
	501
	502	/* Set OPL3 ATTACK_DECAY register of requested voice/operator */
	503	opl3_reg = reg_side \| (OPL3_REG_ATTACK_DECAY + op_offset);
	504	opl3->command(opl3, opl3_reg, reg_val);
	505
	506	/* Set sustain phase level */
	507	reg_val = (voice->sustain << 4) & OPL3_SUSTAIN_MASK;
	508	/* Set release phase level */
	509	reg_val \|= voice->release & OPL3_RELEASE_MASK;
	510
	511	/* Set OPL3 SUSTAIN_RELEASE register of requested voice/operator */
	512	opl3_reg = reg_side \| (OPL3_REG_SUSTAIN_RELEASE + op_offset);
	513	opl3->command(opl3, opl3_reg, reg_val);
	514
	515	/* Set inter-operator feedback */
	516	reg_val = (voice->feedback << 1) & OPL3_FEEDBACK_MASK;
	517	/* Set inter-operator connection */
	518	if (voice->connection)
	519	reg_val \|= OPL3_CONNECTION_BIT;
	520	/* OPL-3 only */
	521	if (opl3->fm_mode == SNDRV_DM_FM_MODE_OPL3) {
	522	if (voice->left)
	523	reg_val \|= OPL3_VOICE_TO_LEFT;
	524	if (voice->right)
	525	reg_val \|= OPL3_VOICE_TO_RIGHT;
	526	}
	527	/* Feedback/connection bits are applicable to voice */
	528	opl3_reg = reg_side \| (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
	529	opl3->command(opl3, opl3_reg, reg_val);
	530
531	/* Select waveform */
532	reg_val = voice->waveform & OPL3_WAVE_SELECT_MASK;
533	opl3_reg = reg_side \| (OPL3_REG_WAVE_SELECT + op_offset);
534	opl3->command(opl3, opl3_reg, reg_val);
535
536	return 0;
537	}
538
5b1646a8	539	static int snd_opl3_set_params(struct snd_opl3 * opl3, struct snd_dm_fm_params * params)
1da177e4 LT	540	{
	541	unsigned char reg_val;
	542
	543	reg_val = 0x00;
	544	/* Set keyboard split method */
	545	if (params->kbd_split)
	546	reg_val \|= OPL3_KEYBOARD_SPLIT;
	547	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_KBD_SPLIT, reg_val);
	548
	549	reg_val = 0x00;
	550	/* Set amplitude modulation (tremolo) depth */
	551	if (params->am_depth)
	552	reg_val \|= OPL3_TREMOLO_DEPTH;
	553	/* Set vibrato depth */
	554	if (params->vib_depth)
	555	reg_val \|= OPL3_VIBRATO_DEPTH;
	556	/* Set percussion mode */
	557	if (params->rhythm) {
	558	reg_val \|= OPL3_PERCUSSION_ENABLE;
	559	opl3->rhythm = 1;
	560	} else {
	561	opl3->rhythm = 0;
	562	}
	563	/* Play percussion instruments */
	564	if (params->bass)
	565	reg_val \|= OPL3_BASSDRUM_ON;
	566	if (params->snare)
	567	reg_val \|= OPL3_SNAREDRUM_ON;
	568	if (params->tomtom)
	569	reg_val \|= OPL3_TOMTOM_ON;
	570	if (params->cymbal)
	571	reg_val \|= OPL3_CYMBAL_ON;
	572	if (params->hihat)
	573	reg_val \|= OPL3_HIHAT_ON;
	574
	575	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_PERCUSSION, reg_val);
	576	return 0;
	577	}
	578
5b1646a8	579	static int snd_opl3_set_mode(struct snd_opl3 * opl3, int mode)
1da177e4 LT	580	{
	581	if ((mode == SNDRV_DM_FM_MODE_OPL3) && (opl3->hardware < OPL3_HW_OPL3))
	582	return -EINVAL;
	583
	584	opl3->fm_mode = mode;
	585	if (opl3->hardware >= OPL3_HW_OPL3)
	586	opl3->command(opl3, OPL3_RIGHT \| OPL3_REG_CONNECTION_SELECT, 0x00); /* Clear 4-op connections */
	587
	588	return 0;
	589	}
	590
5b1646a8	591	static int snd_opl3_set_connection(struct snd_opl3 * opl3, int connection)
1da177e4 LT	592	{
	593	unsigned char reg_val;
	594
	595	/* OPL-3 only */
	596	if (opl3->fm_mode != SNDRV_DM_FM_MODE_OPL3)
	597	return -EINVAL;
	598
	599	reg_val = connection & (OPL3_RIGHT_4OP_0 \| OPL3_RIGHT_4OP_1 \| OPL3_RIGHT_4OP_2 \|
	600	OPL3_LEFT_4OP_0 \| OPL3_LEFT_4OP_1 \| OPL3_LEFT_4OP_2);
	601	/* Set 4-op connections */
	602	opl3->command(opl3, OPL3_RIGHT \| OPL3_REG_CONNECTION_SELECT, reg_val);
	603
	604	return 0;
	605	}
ac19e19b	606