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alistair23-linux/sound/drivers/opl3/opl3_synth.c
Paul Gortmaker d81a6d7176 sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed 
These aren't modules, but they do make use of these macros, so
they will need export.h to get that definition.  Previously,
they got it via the implicit module.h inclusion.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:22 -04:00

617 lines
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/*
* Copyright (c) by Uros Bizjak <uros@kss-loka.si>
*
* Routines for OPL2/OPL3/OPL4 control
*
* 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 <linux/slab.h>
#include <linux/export.h>
#include <sound/opl3.h>
#include <sound/asound_fm.h>
#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
#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;
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 */
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;
}
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