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Linux/sound/isa/gus/gus_reset.c

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  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 }
414 

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