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Diffstat (limited to 'sound/oss/opl3.c')
| -rw-r--r-- | sound/oss/opl3.c | 1255 |
1 files changed, 1255 insertions, 0 deletions
diff --git a/sound/oss/opl3.c b/sound/oss/opl3.c new file mode 100644 index 000000000..b6d19adf8 --- /dev/null +++ b/sound/oss/opl3.c @@ -0,0 +1,1255 @@ +/* + * 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(io, int, 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"); |