git.oblomov.eu Git - linux-2.6/blob - sound/isa/gus/gus_reset.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   3  *
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  */
  20
  21 #include <sound/driver.h>
  22 #include <linux/delay.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/time.h>
  25 #include <sound/core.h>
  26 #include <sound/gus.h>
  27
  28 extern void snd_gf1_timers_init(snd_gus_card_t * gus);
  29 extern void snd_gf1_timers_done(snd_gus_card_t * gus);
  30 extern int snd_gf1_synth_init(snd_gus_card_t * gus);
  31 extern void snd_gf1_synth_done(snd_gus_card_t * gus);
  32
  33 /*
  34  *  ok.. default interrupt handlers...
  35  */
  36
  37 static void snd_gf1_default_interrupt_handler_midi_out(snd_gus_card_t * gus)
  38 {
  39         snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
  40 }
  41
  42 static void snd_gf1_default_interrupt_handler_midi_in(snd_gus_card_t * gus)
  43 {
  44         snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
  45 }
  46
  47 static void snd_gf1_default_interrupt_handler_timer1(snd_gus_card_t * gus)
  48 {
  49         snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
  50 }
  51
  52 static void snd_gf1_default_interrupt_handler_timer2(snd_gus_card_t * gus)
  53 {
  54         snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
  55 }
  56
  57 static void snd_gf1_default_interrupt_handler_wave_and_volume(snd_gus_card_t * gus, snd_gus_voice_t * voice)
  58 {
  59         snd_gf1_i_ctrl_stop(gus, 0x00);
  60         snd_gf1_i_ctrl_stop(gus, 0x0d);
  61 }
  62
  63 static void snd_gf1_default_interrupt_handler_dma_write(snd_gus_card_t * gus)
  64 {
  65         snd_gf1_i_write8(gus, 0x41, 0x00);
  66 }
  67
  68 static void snd_gf1_default_interrupt_handler_dma_read(snd_gus_card_t * gus)
  69 {
  70         snd_gf1_i_write8(gus, 0x49, 0x00);
  71 }
  72
  73 void snd_gf1_set_default_handlers(snd_gus_card_t * gus, unsigned int what)
  74 {
  75         if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
  76                 gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
  77         if (what & SNDRV_GF1_HANDLER_MIDI_IN)
  78                 gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
  79         if (what & SNDRV_GF1_HANDLER_TIMER1)
  80                 gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
  81         if (what & SNDRV_GF1_HANDLER_TIMER2)
  82                 gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
  83         if (what & SNDRV_GF1_HANDLER_VOICE) {
  84                 snd_gus_voice_t *voice;
  85
  86                 voice = &gus->gf1.voices[what & 0xffff];
  87                 voice->handler_wave =
  88                 voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
  89                 voice->handler_effect = NULL;
  90                 voice->volume_change = NULL;
  91         }
  92         if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
  93                 gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
  94         if (what & SNDRV_GF1_HANDLER_DMA_READ)
  95                 gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
  96 }
  97
  98 /*
  99
 100  */
 101
 102 static void snd_gf1_clear_regs(snd_gus_card_t * gus)
 103 {
 104         unsigned long flags;
 105
 106         spin_lock_irqsave(&gus->reg_lock, flags);
 107         inb(GUSP(gus, IRQSTAT));
 108         snd_gf1_write8(gus, 0x41, 0);   /* DRAM DMA Control Register */
 109         snd_gf1_write8(gus, 0x45, 0);   /* Timer Control */
 110         snd_gf1_write8(gus, 0x49, 0);   /* Sampling Control Register */
 111         spin_unlock_irqrestore(&gus->reg_lock, flags);
 112 }
 113
 114 static void snd_gf1_look_regs(snd_gus_card_t * gus)
 115 {
 116         unsigned long flags;
 117
 118         spin_lock_irqsave(&gus->reg_lock, flags);
 119         snd_gf1_look8(gus, 0x41);       /* DRAM DMA Control Register */
 120         snd_gf1_look8(gus, 0x49);       /* Sampling Control Register */
 121         inb(GUSP(gus, IRQSTAT));
 122         snd_gf1_read8(gus, 0x0f);       /* IRQ Source Register */
 123         spin_unlock_irqrestore(&gus->reg_lock, flags);
 124 }
 125
 126 /*
 127  *  put selected GF1 voices to initial stage...
 128  */
 129
 130 void snd_gf1_smart_stop_voice(snd_gus_card_t * gus, unsigned short voice)
 131 {
 132         unsigned long flags;
 133
 134         spin_lock_irqsave(&gus->reg_lock, flags);
 135         snd_gf1_select_voice(gus, voice);
 136 #if 0
 137         printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
 138 #endif
 139         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 140         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 141         spin_unlock_irqrestore(&gus->reg_lock, flags);
 142 }
 143
 144 void snd_gf1_stop_voice(snd_gus_card_t * gus, unsigned short voice)
 145 {
 146         unsigned long flags;
 147
 148         spin_lock_irqsave(&gus->reg_lock, flags);
 149         snd_gf1_select_voice(gus, voice);
 150 #if 0
 151         printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
 152 #endif
 153         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 154         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 155         if (gus->gf1.enh_mode)
 156                 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
 157         spin_unlock_irqrestore(&gus->reg_lock, flags);
 158 #if 0
 159         snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
 160         snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
 161 #endif
 162 }
 163
 164 static void snd_gf1_clear_voices(snd_gus_card_t * gus, unsigned short v_min,
 165                                  unsigned short v_max)
 166 {
 167         unsigned long flags;
 168         unsigned int daddr;
 169         unsigned short i, w_16;
 170
 171         daddr = gus->gf1.default_voice_address << 4;
 172         for (i = v_min; i <= v_max; i++) {
 173 #if 0
 174                 if (gus->gf1.syn_voices)
 175                         gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
 176 #endif
 177                 spin_lock_irqsave(&gus->reg_lock, flags);
 178                 snd_gf1_select_voice(gus, i);
 179                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);   /* Voice Control Register = voice stop */
 180                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);    /* Volume Ramp Control Register = ramp off */
 181                 if (gus->gf1.enh_mode)
 182                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82);  /* Deactivate voice */
 183                 w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
 184                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
 185                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
 186                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
 187                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
 188                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
 189                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
 190                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
 191                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
 192                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
 193                 if (gus->gf1.enh_mode) {
 194                         snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
 195                         snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
 196                         snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
 197                 }
 198                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 199 #if 0
 200                 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
 201                 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
 202 #endif
 203         }
 204 }
 205
 206 void snd_gf1_stop_voices(snd_gus_card_t * gus, unsigned short v_min, unsigned short v_max)
 207 {
 208         unsigned long flags;
 209         short i, ramp_ok;
 210         unsigned short ramp_end;
 211
 212         if (!in_interrupt()) {  /* this can't be done in interrupt */
 213                 for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
 214                         spin_lock_irqsave(&gus->reg_lock, flags);
 215                         snd_gf1_select_voice(gus, i);
 216                         ramp_end = snd_gf1_read16(gus, 9) >> 8;
 217                         if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
 218                                 ramp_ok++;
 219                                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20);      /* ramp rate */
 220                                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);   /* ramp start */
 221                                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
 222                                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
 223                                 if (gus->gf1.enh_mode) {
 224                                         snd_gf1_delay(gus);
 225                                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
 226                                 }
 227                         }
 228                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 229                 }
 230                 msleep_interruptible(50);
 231         }
 232         snd_gf1_clear_voices(gus, v_min, v_max);
 233 }
 234
 235 static void snd_gf1_alloc_voice_use(snd_gus_card_t * gus,
 236                                     snd_gus_voice_t * pvoice,
 237                                     int type, int client, int port)
 238 {
 239         pvoice->use = 1;
 240         switch (type) {
 241         case SNDRV_GF1_VOICE_TYPE_PCM:
 242                 gus->gf1.pcm_alloc_voices++;
 243                 pvoice->pcm = 1;
 244                 break;
 245         case SNDRV_GF1_VOICE_TYPE_SYNTH:
 246                 pvoice->synth = 1;
 247                 pvoice->client = client;
 248                 pvoice->port = port;
 249                 break;
 250         case SNDRV_GF1_VOICE_TYPE_MIDI:
 251                 pvoice->midi = 1;
 252                 pvoice->client = client;
 253                 pvoice->port = port;
 254                 break;
 255         }
 256 }
 257
 258 snd_gus_voice_t *snd_gf1_alloc_voice(snd_gus_card_t * gus, int type, int client, int port)
 259 {
 260         snd_gus_voice_t *pvoice;
 261         unsigned long flags;
 262         int idx;
 263
 264         spin_lock_irqsave(&gus->voice_alloc, flags);
 265         if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
 266                 if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
 267                         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 268                         return NULL;
 269                 }
 270         }
 271         for (idx = 0; idx < 32; idx++) {
 272                 pvoice = &gus->gf1.voices[idx];
 273                 if (!pvoice->use) {
 274                         snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
 275                         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 276                         return pvoice;
 277                 }
 278         }
 279         for (idx = 0; idx < 32; idx++) {
 280                 pvoice = &gus->gf1.voices[idx];
 281                 if (pvoice->midi && !pvoice->client) {
 282                         snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
 283                         snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
 284                         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 285                         return pvoice;
 286                 }
 287         }
 288         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 289         return NULL;
 290 }
 291
 292 void snd_gf1_free_voice(snd_gus_card_t * gus, snd_gus_voice_t *voice)
 293 {
 294         unsigned long flags;
 295         void (*private_free)(snd_gus_voice_t *voice);
 296         void *private_data;
 297
 298         if (voice == NULL || !voice->use)
 299                 return;
 300         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
 301         snd_gf1_clear_voices(gus, voice->number, voice->number);
 302         spin_lock_irqsave(&gus->voice_alloc, flags);
 303         private_free = voice->private_free;
 304         private_data = voice->private_data;
 305         voice->private_free = NULL;
 306         voice->private_data = NULL;
 307         if (voice->pcm)
 308                 gus->gf1.pcm_alloc_voices--;
 309         voice->use = voice->pcm = 0;
 310         voice->sample_ops = NULL;
 311         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 312         if (private_free)
 313                 private_free(voice);
 314 }
 315
 316 /*
 317  *  call this function only by start of driver
 318  */
 319
 320 int snd_gf1_start(snd_gus_card_t * gus)
 321 {
 322         unsigned long flags;
 323         unsigned int i;
 324
 325         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
 326         udelay(160);
 327         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* disable IRQ & DAC */
 328         udelay(160);
 329         snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
 330
 331         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
 332         for (i = 0; i < 32; i++) {
 333                 gus->gf1.voices[i].number = i;
 334                 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
 335         }
 336
 337         snd_gf1_uart_cmd(gus, 0x03);    /* huh.. this cleanup took me some time... */
 338
 339         if (gus->gf1.enh_mode) {        /* enhanced mode !!!! */
 340                 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
 341                 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
 342         }
 343         snd_gf1_clear_regs(gus);
 344         snd_gf1_select_active_voices(gus);
 345         snd_gf1_delay(gus);
 346         gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
 347         /* initialize LFOs & clear LFOs memory */
 348         if (gus->gf1.enh_mode && gus->gf1.memory) {
 349                 gus->gf1.hw_lfo = 1;
 350                 gus->gf1.default_voice_address += 1024;
 351         } else {
 352                 gus->gf1.sw_lfo = 1;
 353         }
 354 #if 0
 355         snd_gf1_lfo_init(gus);
 356 #endif
 357         if (gus->gf1.memory > 0)
 358                 for (i = 0; i < 4; i++)
 359                         snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
 360         snd_gf1_clear_regs(gus);
 361         snd_gf1_clear_voices(gus, 0, 31);
 362         snd_gf1_look_regs(gus);
 363         udelay(160);
 364         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7);   /* Reset Register = IRQ enable, DAC enable */
 365         udelay(160);
 366         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7);   /* Reset Register = IRQ enable, DAC enable */
 367         if (gus->gf1.enh_mode) {        /* enhanced mode !!!! */
 368                 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
 369                 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
 370         }
 371         while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
 372
 373         spin_lock_irqsave(&gus->reg_lock, flags);
 374         outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
 375         outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
 376         spin_unlock_irqrestore(&gus->reg_lock, flags);
 377
 378         snd_gf1_timers_init(gus);
 379         snd_gf1_look_regs(gus);
 380         snd_gf1_mem_init(gus);
 381         snd_gf1_mem_proc_init(gus);
 382 #ifdef CONFIG_SND_DEBUG
 383         snd_gus_irq_profile_init(gus);
 384 #endif
 385
 386 #if 0
 387         if (gus->pnp_flag) {
 388                 if (gus->chip.playback_fifo_size > 0)
 389                         snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
 390                 if (gus->chip.record_fifo_size > 0)
 391                         snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
 392                 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
 393         }
 394 #endif
 395
 396         return 0;
 397 }
 398
 399 /*
 400  *  call this function only by shutdown of driver
 401  */
 402
 403 int snd_gf1_stop(snd_gus_card_t * gus)
 404 {
 405         snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
 406         snd_gf1_stop_voices(gus, 0, 31);                /* stop all voices */
 407         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* disable IRQ & DAC */
 408         snd_gf1_timers_done(gus);
 409         snd_gf1_mem_done(gus);
 410 #if 0
 411         snd_gf1_lfo_done(gus);
 412 #endif
 413         return 0;
 414 }