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Diffstat (limited to 'sound/oss/opl3.c')
| -rw-r--r-- | sound/oss/opl3.c | 1255 |
1 files changed, 0 insertions, 1255 deletions
diff --git a/sound/oss/opl3.c b/sound/oss/opl3.c deleted file mode 100644 index f0f5b5be6314..000000000000 --- a/sound/oss/opl3.c +++ /dev/null @@ -1,1255 +0,0 @@ -/* - * sound/oss/opl3.c - * - * A low level driver for Yamaha YM3812 and OPL-3 -chips - * - * - * Copyright (C) by Hannu Savolainen 1993-1997 - * - * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) - * Version 2 (June 1991). See the "COPYING" file distributed with this software - * for more info. - * - * - * Changes - * Thomas Sailer ioctl code reworked (vmalloc/vfree removed) - * Alan Cox modularisation, fixed sound_mem allocs. - * Christoph Hellwig Adapted to module_init/module_exit - * Arnaldo C. de Melo get rid of check_region, use request_region for - * OPL4, release it on exit, some cleanups. - * - * Status - * Believed to work. Badly needs rewriting a bit to support multiple - * OPL3 devices. - */ - -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/delay.h> - -/* - * Major improvements to the FM handling 30AUG92 by Rob Hooft, - * hooft@chem.ruu.nl - */ - -#include "sound_config.h" - -#include "opl3_hw.h" - -#define MAX_VOICE 18 -#define OFFS_4OP 11 - -struct voice_info -{ - unsigned char keyon_byte; - long bender; - long bender_range; - unsigned long orig_freq; - unsigned long current_freq; - int volume; - int mode; - int panning; /* 0xffff means not set */ -}; - -struct opl_devinfo -{ - int base; - int left_io, right_io; - int nr_voice; - int lv_map[MAX_VOICE]; - - struct voice_info voc[MAX_VOICE]; - struct voice_alloc_info *v_alloc; - struct channel_info *chn_info; - - struct sbi_instrument i_map[SBFM_MAXINSTR]; - struct sbi_instrument *act_i[MAX_VOICE]; - - struct synth_info fm_info; - - int busy; - int model; - unsigned char cmask; - - int is_opl4; -}; - -static struct opl_devinfo *devc = NULL; - -static int detected_model; - -static int store_instr(int instr_no, struct sbi_instrument *instr); -static void freq_to_fnum(int freq, int *block, int *fnum); -static void opl3_command(int io_addr, unsigned int addr, unsigned int val); -static int opl3_kill_note(int dev, int voice, int note, int velocity); - -static void enter_4op_mode(void) -{ - int i; - static int v4op[MAX_VOICE] = { - 0, 1, 2, 9, 10, 11, 6, 7, 8, 15, 16, 17 - }; - - devc->cmask = 0x3f; /* Connect all possible 4 OP voice operators */ - opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, 0x3f); - - for (i = 0; i < 3; i++) - pv_map[i].voice_mode = 4; - for (i = 3; i < 6; i++) - pv_map[i].voice_mode = 0; - - for (i = 9; i < 12; i++) - pv_map[i].voice_mode = 4; - for (i = 12; i < 15; i++) - pv_map[i].voice_mode = 0; - - for (i = 0; i < 12; i++) - devc->lv_map[i] = v4op[i]; - devc->v_alloc->max_voice = devc->nr_voice = 12; -} - -static int opl3_ioctl(int dev, unsigned int cmd, void __user * arg) -{ - struct sbi_instrument ins; - - switch (cmd) { - case SNDCTL_FM_LOAD_INSTR: - printk(KERN_WARNING "Warning: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n"); - if (copy_from_user(&ins, arg, sizeof(ins))) - return -EFAULT; - if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR) { - printk(KERN_WARNING "FM Error: Invalid instrument number %d\n", ins.channel); - return -EINVAL; - } - return store_instr(ins.channel, &ins); - - case SNDCTL_SYNTH_INFO: - devc->fm_info.nr_voices = (devc->nr_voice == 12) ? 6 : devc->nr_voice; - if (copy_to_user(arg, &devc->fm_info, sizeof(devc->fm_info))) - return -EFAULT; - return 0; - - case SNDCTL_SYNTH_MEMAVL: - return 0x7fffffff; - - case SNDCTL_FM_4OP_ENABLE: - if (devc->model == 2) - enter_4op_mode(); - return 0; - - default: - return -EINVAL; - } -} - -static int opl3_detect(int ioaddr) -{ - /* - * This function returns 1 if the FM chip is present at the given I/O port - * The detection algorithm plays with the timer built in the FM chip and - * looks for a change in the status register. - * - * Note! The timers of the FM chip are not connected to AdLib (and compatible) - * boards. - * - * Note2! The chip is initialized if detected. - */ - - unsigned char stat1, signature; - int i; - - if (devc != NULL) - { - printk(KERN_ERR "opl3: Only one OPL3 supported.\n"); - return 0; - } - - devc = kzalloc(sizeof(*devc), GFP_KERNEL); - - if (devc == NULL) - { - printk(KERN_ERR "opl3: Can't allocate memory for the device control " - "structure \n "); - return 0; - } - - strcpy(devc->fm_info.name, "OPL2"); - - if (!request_region(ioaddr, 4, devc->fm_info.name)) { - printk(KERN_WARNING "opl3: I/O port 0x%x already in use\n", ioaddr); - goto cleanup_devc; - } - - devc->base = ioaddr; - - /* Reset timers 1 and 2 */ - opl3_command(ioaddr, TIMER_CONTROL_REGISTER, TIMER1_MASK | TIMER2_MASK); - - /* Reset the IRQ of the FM chip */ - opl3_command(ioaddr, TIMER_CONTROL_REGISTER, IRQ_RESET); - - signature = stat1 = inb(ioaddr); /* Status register */ - - if (signature != 0x00 && signature != 0x06 && signature != 0x02 && - signature != 0x0f) - { - MDB(printk(KERN_INFO "OPL3 not detected %x\n", signature)); - goto cleanup_region; - } - - if (signature == 0x06) /* OPL2 */ - { - detected_model = 2; - } - else if (signature == 0x00 || signature == 0x0f) /* OPL3 or OPL4 */ - { - unsigned char tmp; - - detected_model = 3; - - /* - * Detect availability of OPL4 (_experimental_). Works probably - * only after a cold boot. In addition the OPL4 port - * of the chip may not be connected to the PC bus at all. - */ - - opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, 0x00); - opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, OPL3_ENABLE | OPL4_ENABLE); - - if ((tmp = inb(ioaddr)) == 0x02) /* Have a OPL4 */ - { - detected_model = 4; - } - - if (request_region(ioaddr - 8, 2, "OPL4")) /* OPL4 port was free */ - { - int tmp; - - outb((0x02), ioaddr - 8); /* Select OPL4 ID register */ - udelay(10); - tmp = inb(ioaddr - 7); /* Read it */ - udelay(10); - - if (tmp == 0x20) /* OPL4 should return 0x20 here */ - { - detected_model = 4; - outb((0xF8), ioaddr - 8); /* Select OPL4 FM mixer control */ - udelay(10); - outb((0x1B), ioaddr - 7); /* Write value */ - udelay(10); - } - else - { /* release OPL4 port */ - release_region(ioaddr - 8, 2); - detected_model = 3; - } - } - opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, 0); - } - for (i = 0; i < 9; i++) - opl3_command(ioaddr, KEYON_BLOCK + i, 0); /* - * Note off - */ - - opl3_command(ioaddr, TEST_REGISTER, ENABLE_WAVE_SELECT); - opl3_command(ioaddr, PERCOSSION_REGISTER, 0x00); /* - * Melodic mode. - */ - return 1; -cleanup_region: - release_region(ioaddr, 4); -cleanup_devc: - kfree(devc); - devc = NULL; - return 0; -} - -static int opl3_kill_note (int devno, int voice, int note, int velocity) -{ - struct physical_voice_info *map; - - if (voice < 0 || voice >= devc->nr_voice) - return 0; - - devc->v_alloc->map[voice] = 0; - - map = &pv_map[devc->lv_map[voice]]; - - if (map->voice_mode == 0) - return 0; - - opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, devc->voc[voice].keyon_byte & ~0x20); - devc->voc[voice].keyon_byte = 0; - devc->voc[voice].bender = 0; - devc->voc[voice].volume = 64; - devc->voc[voice].panning = 0xffff; /* Not set */ - devc->voc[voice].bender_range = 200; - devc->voc[voice].orig_freq = 0; - devc->voc[voice].current_freq = 0; - devc->voc[voice].mode = 0; - return 0; -} - -#define HIHAT 0 -#define CYMBAL 1 -#define TOMTOM 2 -#define SNARE 3 -#define BDRUM 4 -#define UNDEFINED TOMTOM -#define DEFAULT TOMTOM - -static int store_instr(int instr_no, struct sbi_instrument *instr) -{ - if (instr->key != FM_PATCH && (instr->key != OPL3_PATCH || devc->model != 2)) - printk(KERN_WARNING "FM warning: Invalid patch format field (key) 0x%x\n", instr->key); - memcpy((char *) &(devc->i_map[instr_no]), (char *) instr, sizeof(*instr)); - return 0; -} - -static int opl3_set_instr (int dev, int voice, int instr_no) -{ - if (voice < 0 || voice >= devc->nr_voice) - return 0; - if (instr_no < 0 || instr_no >= SBFM_MAXINSTR) - instr_no = 0; /* Acoustic piano (usually) */ - - devc->act_i[voice] = &devc->i_map[instr_no]; - return 0; -} - -/* - * The next table looks magical, but it certainly is not. Its values have - * been calculated as table[i]=8*log(i/64)/log(2) with an obvious exception - * for i=0. This log-table converts a linear volume-scaling (0..127) to a - * logarithmic scaling as present in the FM-synthesizer chips. so : Volume - * 64 = 0 db = relative volume 0 and: Volume 32 = -6 db = relative - * volume -8 it was implemented as a table because it is only 128 bytes and - * it saves a lot of log() calculations. (RH) - */ - -static char fm_volume_table[128] = -{ - -64, -48, -40, -35, -32, -29, -27, -26, - -24, -23, -21, -20, -19, -18, -18, -17, - -16, -15, -15, -14, -13, -13, -12, -12, - -11, -11, -10, -10, -10, -9, -9, -8, - -8, -8, -7, -7, -7, -6, -6, -6, - -5, -5, -5, -5, -4, -4, -4, -4, - -3, -3, -3, -3, -2, -2, -2, -2, - -2, -1, -1, -1, -1, 0, 0, 0, - 0, 0, 0, 1, 1, 1, 1, 1, - 1, 2, 2, 2, 2, 2, 2, 2, - 3, 3, 3, 3, 3, 3, 3, 4, - 4, 4, 4, 4, 4, 4, 4, 5, - 5, 5, 5, 5, 5, 5, 5, 5, - 6, 6, 6, 6, 6, 6, 6, 6, - 6, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 8, 8, 8, 8, 8 -}; - -static void calc_vol(unsigned char *regbyte, int volume, int main_vol) -{ - int level = (~*regbyte & 0x3f); - - if (main_vol > 127) - main_vol = 127; - volume = (volume * main_vol) / 127; - - if (level) - level += fm_volume_table[volume]; - - if (level > 0x3f) - level = 0x3f; - if (level < 0) - level = 0; - - *regbyte = (*regbyte & 0xc0) | (~level & 0x3f); -} - -static void set_voice_volume(int voice, int volume, int main_vol) -{ - unsigned char vol1, vol2, vol3, vol4; - struct sbi_instrument *instr; - struct physical_voice_info *map; - - if (voice < 0 || voice >= devc->nr_voice) - return; - - map = &pv_map[devc->lv_map[voice]]; - instr = devc->act_i[voice]; - - if (!instr) - instr = &devc->i_map[0]; - - if (instr->channel < 0) - return; - - if (devc->voc[voice].mode == 0) - return; - - if (devc->voc[voice].mode == 2) - { - vol1 = instr->operators[2]; - vol2 = instr->operators[3]; - if ((instr->operators[10] & 0x01)) - { - calc_vol(&vol1, volume, main_vol); - calc_vol(&vol2, volume, main_vol); - } - else - { - calc_vol(&vol2, volume, main_vol); - } - opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], vol1); - opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], vol2); - } - else - { /* - * 4 OP voice - */ - int connection; - - vol1 = instr->operators[2]; - vol2 = instr->operators[3]; - vol3 = instr->operators[OFFS_4OP + 2]; - vol4 = instr->operators[OFFS_4OP + 3]; - - /* - * The connection method for 4 OP devc->voc is defined by the rightmost - * bits at the offsets 10 and 10+OFFS_4OP - */ - - connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01); - - switch (connection) - { - case 0: - calc_vol(&vol4, volume, main_vol); - break; - - case 1: - calc_vol(&vol2, volume, main_vol); - calc_vol(&vol4, volume, main_vol); - break; - - case 2: - calc_vol(&vol1, volume, main_vol); - calc_vol(&vol4, volume, main_vol); - break; - - case 3: - calc_vol(&vol1, volume, main_vol); - calc_vol(&vol3, volume, main_vol); - calc_vol(&vol4, volume, main_vol); - break; - - default: - ; - } - opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], vol1); - opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], vol2); - opl3_command(map->ioaddr, KSL_LEVEL + map->op[2], vol3); - opl3_command(map->ioaddr, KSL_LEVEL + map->op[3], vol4); - } -} - -static int opl3_start_note (int dev, int voice, int note, int volume) -{ - unsigned char data, fpc; - int block, fnum, freq, voice_mode, pan; - struct sbi_instrument *instr; - struct physical_voice_info *map; - - if (voice < 0 || voice >= devc->nr_voice) - return 0; - - map = &pv_map[devc->lv_map[voice]]; - pan = devc->voc[voice].panning; - - if (map->voice_mode == 0) - return 0; - - if (note == 255) /* - * Just change the volume - */ - { - set_voice_volume(voice, volume, devc->voc[voice].volume); - return 0; - } - - /* - * Kill previous note before playing - */ - - opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], 0xff); /* - * Carrier - * volume to - * min - */ - opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], 0xff); /* - * Modulator - * volume to - */ - - if (map->voice_mode == 4) - { - opl3_command(map->ioaddr, KSL_LEVEL + map->op[2], 0xff); - opl3_command(map->ioaddr, KSL_LEVEL + map->op[3], 0xff); - } - - opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, 0x00); /* - * Note - * off - */ - - instr = devc->act_i[voice]; - - if (!instr) - instr = &devc->i_map[0]; - - if (instr->channel < 0) - { - printk(KERN_WARNING "opl3: Initializing voice %d with undefined instrument\n", voice); - return 0; - } - - if (map->voice_mode == 2 && instr->key == OPL3_PATCH) - return 0; /* - * Cannot play - */ - - voice_mode = map->voice_mode; - - if (voice_mode == 4) - { - int voice_shift; - - voice_shift = (map->ioaddr == devc->left_io) ? 0 : 3; - voice_shift += map->voice_num; - - if (instr->key != OPL3_PATCH) /* - * Just 2 OP patch - */ - { - voice_mode = 2; - devc->cmask &= ~(1 << voice_shift); - } - else - { - devc->cmask |= (1 << voice_shift); - } - - opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, devc->cmask); - } - - /* - * Set Sound Characteristics - */ - - opl3_command(map->ioaddr, AM_VIB + map->op[0], instr->operators[0]); - opl3_command(map->ioaddr, AM_VIB + map->op[1], instr->operators[1]); - - /* - * Set Attack/Decay - */ - - opl3_command(map->ioaddr, ATTACK_DECAY + map->op[0], instr->operators[4]); - opl3_command(map->ioaddr, ATTACK_DECAY + map->op[1], instr->operators[5]); - - /* - * Set Sustain/Release - */ - - opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[0], instr->operators[6]); - opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[1], instr->operators[7]); - - /* - * Set Wave Select - */ - - opl3_command(map->ioaddr, WAVE_SELECT + map->op[0], instr->operators[8]); - opl3_command(map->ioaddr, WAVE_SELECT + map->op[1], instr->operators[9]); - - /* - * Set Feedback/Connection - */ - - fpc = instr->operators[10]; - - if (pan != 0xffff) - { - fpc &= ~STEREO_BITS; - if (pan < -64) - fpc |= VOICE_TO_LEFT; - else - if (pan > 64) - fpc |= VOICE_TO_RIGHT; - else - fpc |= (VOICE_TO_LEFT | VOICE_TO_RIGHT); - } - - if (!(fpc & 0x30)) - fpc |= 0x30; /* - * Ensure that at least one chn is enabled - */ - opl3_command(map->ioaddr, FEEDBACK_CONNECTION + map->voice_num, fpc); - - /* - * If the voice is a 4 OP one, initialize the operators 3 and 4 also - */ - - if (voice_mode == 4) - { - /* - * Set Sound Characteristics - */ - - opl3_command(map->ioaddr, AM_VIB + map->op[2], instr->operators[OFFS_4OP + 0]); - opl3_command(map->ioaddr, AM_VIB + map->op[3], instr->operators[OFFS_4OP + 1]); - - /* - * Set Attack/Decay - */ - - opl3_command(map->ioaddr, ATTACK_DECAY + map->op[2], instr->operators[OFFS_4OP + 4]); - opl3_command(map->ioaddr, ATTACK_DECAY + map->op[3], instr->operators[OFFS_4OP + 5]); - - /* - * Set Sustain/Release - */ - - opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[2], instr->operators[OFFS_4OP + 6]); - opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[3], instr->operators[OFFS_4OP + 7]); - - /* - * Set Wave Select - */ - - opl3_command(map->ioaddr, WAVE_SELECT + map->op[2], instr->operators[OFFS_4OP + 8]); - opl3_command(map->ioaddr, WAVE_SELECT + map->op[3], instr->operators[OFFS_4OP + 9]); - - /* - * Set Feedback/Connection - */ - - fpc = instr->operators[OFFS_4OP + 10]; - if (!(fpc & 0x30)) - fpc |= 0x30; /* - * Ensure that at least one chn is enabled - */ - opl3_command(map->ioaddr, FEEDBACK_CONNECTION + map->voice_num + 3, fpc); - } - - devc->voc[voice].mode = voice_mode; - set_voice_volume(voice, volume, devc->voc[voice].volume); - - freq = devc->voc[voice].orig_freq = note_to_freq(note) / 1000; - - /* - * Since the pitch bender may have been set before playing the note, we - * have to calculate the bending now. - */ - - freq = compute_finetune(devc->voc[voice].orig_freq, devc->voc[voice].bender, devc->voc[voice].bender_range, 0); - devc->voc[voice].current_freq = freq; - - freq_to_fnum(freq, &block, &fnum); - - /* - * Play note - */ - - data = fnum & 0xff; /* - * Least significant bits of fnumber - */ - opl3_command(map->ioaddr, FNUM_LOW + map->voice_num, data); - - data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3); - devc->voc[voice].keyon_byte = data; - opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, data); - if (voice_mode == 4) - opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num + 3, data); - - return 0; -} - -static void freq_to_fnum (int freq, int *block, int *fnum) -{ - int f, octave; - - /* - * Converts the note frequency to block and fnum values for the FM chip - */ - /* - * First try to compute the block -value (octave) where the note belongs - */ - - f = freq; - - octave = 5; - - if (f == 0) - octave = 0; - else if (f < 261) - { - while (f < 261) - { - octave--; - f <<= 1; - } - } - else if (f > 493) - { - while (f > 493) - { - octave++; - f >>= 1; - } - } - - if (octave > 7) - octave = 7; - - *fnum = freq * (1 << (20 - octave)) / 49716; - *block = octave; -} - -static void opl3_command (int io_addr, unsigned int addr, unsigned int val) -{ - int i; - - /* - * The original 2-OP synth requires a quite long delay after writing to a - * register. The OPL-3 survives with just two INBs - */ - - outb(((unsigned char) (addr & 0xff)), io_addr); - - if (devc->model != 2) - udelay(10); - else - for (i = 0; i < 2; i++) - inb(io_addr); - - outb(((unsigned char) (val & 0xff)), io_addr + 1); - - if (devc->model != 2) - udelay(30); - else - for (i = 0; i < 2; i++) - inb(io_addr); -} - -static void opl3_reset(int devno) -{ - int i; - - for (i = 0; i < 18; i++) - devc->lv_map[i] = i; - - for (i = 0; i < devc->nr_voice; i++) - { - opl3_command(pv_map[devc->lv_map[i]].ioaddr, - KSL_LEVEL + pv_map[devc->lv_map[i]].op[0], 0xff); - - opl3_command(pv_map[devc->lv_map[i]].ioaddr, - KSL_LEVEL + pv_map[devc->lv_map[i]].op[1], 0xff); - - if (pv_map[devc->lv_map[i]].voice_mode == 4) - { - opl3_command(pv_map[devc->lv_map[i]].ioaddr, - KSL_LEVEL + pv_map[devc->lv_map[i]].op[2], 0xff); - - opl3_command(pv_map[devc->lv_map[i]].ioaddr, - KSL_LEVEL + pv_map[devc->lv_map[i]].op[3], 0xff); - } - - opl3_kill_note(devno, i, 0, 64); - } - - if (devc->model == 2) - { - devc->v_alloc->max_voice = devc->nr_voice = 18; - - for (i = 0; i < 18; i++) - pv_map[i].voice_mode = 2; - - } -} - -static int opl3_open(int dev, int mode) -{ - int i; - - if (devc->busy) - return -EBUSY; - devc->busy = 1; - - devc->v_alloc->max_voice = devc->nr_voice = (devc->model == 2) ? 18 : 9; - devc->v_alloc->timestamp = 0; - - for (i = 0; i < 18; i++) - { - devc->v_alloc->map[i] = 0; - devc->v_alloc->alloc_times[i] = 0; - } - - devc->cmask = 0x00; /* - * Just 2 OP mode - */ - if (devc->model == 2) - opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, devc->cmask); - return 0; -} - -static void opl3_close(int dev) -{ - devc->busy = 0; - devc->v_alloc->max_voice = devc->nr_voice = (devc->model == 2) ? 18 : 9; - - devc->fm_info.nr_drums = 0; - devc->fm_info.perc_mode = 0; - - opl3_reset(dev); -} - -static void opl3_hw_control(int dev, unsigned char *event) -{ -} - -static int opl3_load_patch(int dev, int format, const char __user *addr, - int count, int pmgr_flag) -{ - struct sbi_instrument ins; - - if (count <sizeof(ins)) - { - printk(KERN_WARNING "FM Error: Patch record too short\n"); - return -EINVAL; - } - - if (copy_from_user(&ins, addr, sizeof(ins))) - return -EFAULT; - - if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR) - { - printk(KERN_WARNING "FM Error: Invalid instrument number %d\n", ins.channel); - return -EINVAL; - } - ins.key = format; - - return store_instr(ins.channel, &ins); -} - -static void opl3_panning(int dev, int voice, int value) -{ - - if (voice < 0 || voice >= devc->nr_voice) - return; - - devc->voc[voice].panning = value; -} - -static void opl3_volume_method(int dev, int mode) -{ -} - -#define SET_VIBRATO(cell) { \ - tmp = instr->operators[(cell-1)+(((cell-1)/2)*OFFS_4OP)]; \ - if (pressure > 110) \ - tmp |= 0x40; /* Vibrato on */ \ - opl3_command (map->ioaddr, AM_VIB + map->op[cell-1], tmp);} - -static void opl3_aftertouch(int dev, int voice, int pressure) -{ - int tmp; - struct sbi_instrument *instr; - struct physical_voice_info *map; - - if (voice < 0 || voice >= devc->nr_voice) - return; - - map = &pv_map[devc->lv_map[voice]]; - - if (map->voice_mode == 0) - return; - - /* - * Adjust the amount of vibrato depending the pressure - */ - - instr = devc->act_i[voice]; - - if (!instr) - instr = &devc->i_map[0]; - - if (devc->voc[voice].mode == 4) - { - int connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01); - - switch (connection) - { - case 0: - SET_VIBRATO(4); - break; - - case 1: - SET_VIBRATO(2); - SET_VIBRATO(4); - break; - - case 2: - SET_VIBRATO(1); - SET_VIBRATO(4); - break; - - case 3: - SET_VIBRATO(1); - SET_VIBRATO(3); - SET_VIBRATO(4); - break; - - } - /* - * Not implemented yet - */ - } - else - { - SET_VIBRATO(1); - - if ((instr->operators[10] & 0x01)) /* - * Additive synthesis - */ - SET_VIBRATO(2); - } -} - -#undef SET_VIBRATO - -static void bend_pitch(int dev, int voice, int value) -{ - unsigned char data; - int block, fnum, freq; - struct physical_voice_info *map; - - map = &pv_map[devc->lv_map[voice]]; - - if (map->voice_mode == 0) - return; - - devc->voc[voice].bender = value; - if (!value) - return; - if (!(devc->voc[voice].keyon_byte & 0x20)) - return; /* - * Not keyed on - */ - - freq = compute_finetune(devc->voc[voice].orig_freq, devc->voc[voice].bender, devc->voc[voice].bender_range, 0); - devc->voc[voice].current_freq = freq; - - freq_to_fnum(freq, &block, &fnum); - - data = fnum & 0xff; /* - * Least significant bits of fnumber - */ - opl3_command(map->ioaddr, FNUM_LOW + map->voice_num, data); - - data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3); - devc->voc[voice].keyon_byte = data; - opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, data); -} - -static void opl3_controller (int dev, int voice, int ctrl_num, int value) -{ - if (voice < 0 || voice >= devc->nr_voice) - return; - - switch (ctrl_num) - { - case CTRL_PITCH_BENDER: - bend_pitch(dev, voice, value); - break; - - case CTRL_PITCH_BENDER_RANGE: - devc->voc[voice].bender_range = value; - break; - - case CTL_MAIN_VOLUME: - devc->voc[voice].volume = value / 128; - break; - - case CTL_PAN: - devc->voc[voice].panning = (value * 2) - 128; - break; - } -} - -static void opl3_bender(int dev, int voice, int value) -{ - if (voice < 0 || voice >= devc->nr_voice) - return; - - bend_pitch(dev, voice, value - 8192); -} - -static int opl3_alloc_voice(int dev, int chn, int note, struct voice_alloc_info *alloc) -{ - int i, p, best, first, avail, best_time = 0x7fffffff; - struct sbi_instrument *instr; - int is4op; - int instr_no; - - if (chn < 0 || chn > 15) - instr_no = 0; - else - instr_no = devc->chn_info[chn].pgm_num; - - instr = &devc->i_map[instr_no]; - if (instr->channel < 0 || /* Instrument not loaded */ - devc->nr_voice != 12) /* Not in 4 OP mode */ - is4op = 0; - else if (devc->nr_voice == 12) /* 4 OP mode */ - is4op = (instr->key == OPL3_PATCH); - else - is4op = 0; - - if (is4op) - { - first = p = 0; - avail = 6; - } - else - { - if (devc->nr_voice == 12) /* 4 OP mode. Use the '2 OP only' operators first */ - first = p = 6; - else - first = p = 0; - avail = devc->nr_voice; - } - - /* - * Now try to find a free voice - */ - best = first; - - for (i = 0; i < avail; i++) - { - if (alloc->map[p] == 0) - { - return p; - } - if (alloc->alloc_times[p] < best_time) /* Find oldest playing note */ - { - best_time = alloc->alloc_times[p]; - best = p; - } - p = (p + 1) % avail; - } - - /* - * Insert some kind of priority mechanism here. - */ - - if (best < 0) - best = 0; - if (best > devc->nr_voice) - best -= devc->nr_voice; - - return best; /* All devc->voc in use. Select the first one. */ -} - -static void opl3_setup_voice(int dev, int voice, int chn) -{ - struct channel_info *info; - - if (voice < 0 || voice >= devc->nr_voice) - return; - - if (chn < 0 || chn > 15) - return; - - info = &synth_devs[dev]->chn_info[chn]; - - opl3_set_instr(dev, voice, info->pgm_num); - - devc->voc[voice].bender = 0; - devc->voc[voice].bender_range = info->bender_range; - devc->voc[voice].volume = info->controllers[CTL_MAIN_VOLUME]; - devc->voc[voice].panning = (info->controllers[CTL_PAN] * 2) - 128; -} - -static struct synth_operations opl3_operations = -{ - .owner = THIS_MODULE, - .id = "OPL", - .info = NULL, - .midi_dev = 0, - .synth_type = SYNTH_TYPE_FM, - .synth_subtype = FM_TYPE_ADLIB, - .open = opl3_open, - .close = opl3_close, - .ioctl = opl3_ioctl, - .kill_note = opl3_kill_note, - .start_note = opl3_start_note, - .set_instr = opl3_set_instr, - .reset = opl3_reset, - .hw_control = opl3_hw_control, - .load_patch = opl3_load_patch, - .aftertouch = opl3_aftertouch, - .controller = opl3_controller, - .panning = opl3_panning, - .volume_method = opl3_volume_method, - .bender = opl3_bender, - .alloc_voice = opl3_alloc_voice, - .setup_voice = opl3_setup_voice -}; - -static int opl3_init(int ioaddr, struct module *owner) -{ - int i; - int me; - - if (devc == NULL) - { - printk(KERN_ERR "opl3: Device control structure not initialized.\n"); - return -1; - } - - if ((me = sound_alloc_synthdev()) == -1) - { - printk(KERN_WARNING "opl3: Too many synthesizers\n"); - return -1; - } - - devc->nr_voice = 9; - - devc->fm_info.device = 0; - devc->fm_info.synth_type = SYNTH_TYPE_FM; - devc->fm_info.synth_subtype = FM_TYPE_ADLIB; - devc->fm_info.perc_mode = 0; - devc->fm_info.nr_voices = 9; - devc->fm_info.nr_drums = 0; - devc->fm_info.instr_bank_size = SBFM_MAXINSTR; - devc->fm_info.capabilities = 0; - devc->left_io = ioaddr; - devc->right_io = ioaddr + 2; - - if (detected_model <= 2) - devc->model = 1; - else - { - devc->model = 2; - if (detected_model == 4) - devc->is_opl4 = 1; - } - - opl3_operations.info = &devc->fm_info; - - synth_devs[me] = &opl3_operations; - - if (owner) - synth_devs[me]->owner = owner; - - sequencer_init(); - devc->v_alloc = &opl3_operations.alloc; - devc->chn_info = &opl3_operations.chn_info[0]; - - if (devc->model == 2) - { - if (devc->is_opl4) - strcpy(devc->fm_info.name, "Yamaha OPL4/OPL3 FM"); - else - strcpy(devc->fm_info.name, "Yamaha OPL3"); - - devc->v_alloc->max_voice = devc->nr_voice = 18; - devc->fm_info.nr_drums = 0; - devc->fm_info.synth_subtype = FM_TYPE_OPL3; - devc->fm_info.capabilities |= SYNTH_CAP_OPL3; - - for (i = 0; i < 18; i++) - { - if (pv_map[i].ioaddr == USE_LEFT) - pv_map[i].ioaddr = devc->left_io; - else - pv_map[i].ioaddr = devc->right_io; - } - opl3_command(devc->right_io, OPL3_MODE_REGISTER, OPL3_ENABLE); - opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, 0x00); - } - else - { - strcpy(devc->fm_info.name, "Yamaha OPL2"); - devc->v_alloc->max_voice = devc->nr_voice = 9; - devc->fm_info.nr_drums = 0; - - for (i = 0; i < 18; i++) - pv_map[i].ioaddr = devc->left_io; - } - conf_printf2(devc->fm_info.name, ioaddr, 0, -1, -1); - - for (i = 0; i < SBFM_MAXINSTR; i++) - devc->i_map[i].channel = -1; - - return me; -} - -static int me; - -static int io = -1; - -module_param_hw(io, int, ioport, 0); - -static int __init init_opl3 (void) -{ - printk(KERN_INFO "YM3812 and OPL-3 driver Copyright (C) by Hannu Savolainen, Rob Hooft 1993-1996\n"); - - if (io != -1) /* User loading pure OPL3 module */ - { - if (!opl3_detect(io)) - { - return -ENODEV; - } - - me = opl3_init(io, THIS_MODULE); - } - - return 0; -} - -static void __exit cleanup_opl3(void) -{ - if (devc && io != -1) - { - if (devc->base) { - release_region(devc->base,4); - if (devc->is_opl4) - release_region(devc->base - 8, 2); - } - kfree(devc); - devc = NULL; - sound_unload_synthdev(me); - } -} - -module_init(init_opl3); -module_exit(cleanup_opl3); - -#ifndef MODULE -static int __init setup_opl3(char *str) -{ - /* io */ - int ints[2]; - - str = get_options(str, ARRAY_SIZE(ints), ints); - - io = ints[1]; - - return 1; -} - -__setup("opl3=", setup_opl3); -#endif -MODULE_LICENSE("GPL"); |