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

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