~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/isa/gus/gus_pcm.c

Version: ~ [ linux-5.13-rc5 ] ~ [ linux-5.12.9 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.42 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.124 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.193 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.235 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.271 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.271 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  4  *  Routines for control of GF1 chip (PCM things)
  5  *
  6  *  InterWave chips supports interleaved DMA, but this feature isn't used in
  7  *  this code.
  8  *  
  9  *  This code emulates autoinit DMA transfer for playback, recording by GF1
 10  *  chip doesn't support autoinit DMA.
 11  */
 12 
 13 #include <asm/dma.h>
 14 #include <linux/slab.h>
 15 #include <linux/sched/signal.h>
 16 
 17 #include <sound/core.h>
 18 #include <sound/control.h>
 19 #include <sound/gus.h>
 20 #include <sound/pcm_params.h>
 21 #include "gus_tables.h"
 22 
 23 /* maximum rate */
 24 
 25 #define SNDRV_GF1_PCM_RATE              48000
 26 
 27 #define SNDRV_GF1_PCM_PFLG_NONE         0
 28 #define SNDRV_GF1_PCM_PFLG_ACTIVE       (1<<0)
 29 #define SNDRV_GF1_PCM_PFLG_NEUTRAL      (2<<0)
 30 
 31 struct gus_pcm_private {
 32         struct snd_gus_card * gus;
 33         struct snd_pcm_substream *substream;
 34         spinlock_t lock;
 35         unsigned int voices;
 36         struct snd_gus_voice *pvoices[2];
 37         unsigned int memory;
 38         unsigned short flags;
 39         unsigned char voice_ctrl, ramp_ctrl;
 40         unsigned int bpos;
 41         unsigned int blocks;
 42         unsigned int block_size;
 43         unsigned int dma_size;
 44         wait_queue_head_t sleep;
 45         atomic_t dma_count;
 46         int final_volume;
 47 };
 48 
 49 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
 50 {
 51         struct gus_pcm_private *pcmp = private_data;
 52 
 53         if (pcmp) {
 54                 atomic_dec(&pcmp->dma_count);
 55                 wake_up(&pcmp->sleep);
 56         }
 57 }
 58 
 59 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
 60                                     unsigned int offset,
 61                                     unsigned int addr,
 62                                     unsigned int count)
 63 {
 64         struct snd_gf1_dma_block block;
 65         struct snd_pcm_runtime *runtime = substream->runtime;
 66         struct gus_pcm_private *pcmp = runtime->private_data;
 67 
 68         count += offset & 31;
 69         offset &= ~31;
 70         /*
 71         snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n",
 72                    offset, count);
 73         */
 74         memset(&block, 0, sizeof(block));
 75         block.cmd = SNDRV_GF1_DMA_IRQ;
 76         if (snd_pcm_format_unsigned(runtime->format))
 77                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
 78         if (snd_pcm_format_width(runtime->format) == 16)
 79                 block.cmd |= SNDRV_GF1_DMA_16BIT;
 80         block.addr = addr & ~31;
 81         block.buffer = runtime->dma_area + offset;
 82         block.buf_addr = runtime->dma_addr + offset;
 83         block.count = count;
 84         block.private_data = pcmp;
 85         block.ack = snd_gf1_pcm_block_change_ack;
 86         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
 87                 atomic_inc(&pcmp->dma_count);
 88         return 0;
 89 }
 90 
 91 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
 92 {
 93         struct snd_pcm_runtime *runtime = substream->runtime;
 94         struct gus_pcm_private *pcmp = runtime->private_data;
 95         struct snd_gus_card * gus = pcmp->gus;
 96         unsigned long flags;
 97         unsigned char voice_ctrl, ramp_ctrl;
 98         unsigned short rate;
 99         unsigned int curr, begin, end;
100         unsigned short vol;
101         unsigned char pan;
102         unsigned int voice;
103 
104         spin_lock_irqsave(&pcmp->lock, flags);
105         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
106                 spin_unlock_irqrestore(&pcmp->lock, flags);
107                 return;
108         }
109         pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
110         pcmp->final_volume = 0;
111         spin_unlock_irqrestore(&pcmp->lock, flags);
112         rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
113         /* enable WAVE IRQ */
114         voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
115         /* enable RAMP IRQ + rollover */
116         ramp_ctrl = 0x24;
117         if (pcmp->blocks == 1) {
118                 voice_ctrl |= 0x08;     /* loop enable */
119                 ramp_ctrl &= ~0x04;     /* disable rollover */
120         }
121         for (voice = 0; voice < pcmp->voices; voice++) {
122                 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
123                 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
124                 end = curr + (pcmp->block_size / runtime->channels);
125                 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
126                 /*
127                 snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, "
128                            "ctrl=0x%x, ramp=0x%x, rate=0x%x\n",
129                            curr, begin, end, voice_ctrl, ramp_ctrl, rate);
130                 */
131                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
132                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
133                 spin_lock_irqsave(&gus->reg_lock, flags);
134                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
135                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
136                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
137                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
138                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
139                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
140                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
141                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
142                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
143                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
144                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
145                 if (!gus->gf1.enh_mode) {
146                         snd_gf1_delay(gus);
147                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
148                 }
149                 spin_unlock_irqrestore(&gus->reg_lock, flags);
150         }
151         spin_lock_irqsave(&gus->reg_lock, flags);
152         for (voice = 0; voice < pcmp->voices; voice++) {
153                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
154                 if (gus->gf1.enh_mode)
155                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
156                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
157                 voice_ctrl &= ~0x20;
158         }
159         voice_ctrl |= 0x20;
160         if (!gus->gf1.enh_mode) {
161                 snd_gf1_delay(gus);
162                 for (voice = 0; voice < pcmp->voices; voice++) {
163                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
164                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
165                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
166                 }
167         }
168         spin_unlock_irqrestore(&gus->reg_lock, flags);
169 }
170 
171 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
172                                        struct snd_gus_voice *pvoice)
173 {
174         struct gus_pcm_private * pcmp;
175         struct snd_pcm_runtime *runtime;
176         unsigned char voice_ctrl, ramp_ctrl;
177         unsigned int idx;
178         unsigned int end, step;
179 
180         if (!pvoice->private_data) {
181                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
182                 snd_gf1_smart_stop_voice(gus, pvoice->number);
183                 return;
184         }
185         pcmp = pvoice->private_data;
186         if (pcmp == NULL) {
187                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
188                 snd_gf1_smart_stop_voice(gus, pvoice->number);
189                 return;
190         }               
191         gus = pcmp->gus;
192         runtime = pcmp->substream->runtime;
193 
194         spin_lock(&gus->reg_lock);
195         snd_gf1_select_voice(gus, pvoice->number);
196         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
197         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
198 #if 0
199         snd_gf1_select_voice(gus, pvoice->number);
200         printk(KERN_DEBUG "position = 0x%x\n",
201                (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
202         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
203         printk(KERN_DEBUG "position = 0x%x\n",
204                (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
205         snd_gf1_select_voice(gus, pvoice->number);
206 #endif
207         pcmp->bpos++;
208         pcmp->bpos %= pcmp->blocks;
209         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
210                 voice_ctrl |= 0x08;     /* enable loop */
211         } else {
212                 ramp_ctrl |= 0x04;      /* enable rollover */
213         }
214         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
215         end -= voice_ctrl & 4 ? 2 : 1;
216         step = pcmp->dma_size / runtime->channels;
217         voice_ctrl |= 0x20;
218         if (!pcmp->final_volume) {
219                 ramp_ctrl |= 0x20;
220                 ramp_ctrl &= ~0x03;
221         }
222         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
223                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
224                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
225                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
226                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
227                 voice_ctrl &= ~0x20;
228         }
229         if (!gus->gf1.enh_mode) {
230                 snd_gf1_delay(gus);
231                 voice_ctrl |= 0x20;
232                 for (idx = 0; idx < pcmp->voices; idx++) {
233                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
234                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
235                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
236                         voice_ctrl &= ~0x20;
237                 }
238         }
239         spin_unlock(&gus->reg_lock);
240 
241         snd_pcm_period_elapsed(pcmp->substream);
242 #if 0
243         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
244             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
245                 end = pcmp->bpos * pcmp->block_size;
246                 if (runtime->channels > 1) {
247                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
248                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
249                 } else {
250                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
251                 }
252         }
253 #endif
254 }
255 
256 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
257                                          struct snd_gus_voice * pvoice)
258 {
259         unsigned short vol;
260         int cvoice;
261         struct gus_pcm_private *pcmp = pvoice->private_data;
262 
263         /* stop ramp, but leave rollover bit untouched */
264         spin_lock(&gus->reg_lock);
265         snd_gf1_select_voice(gus, pvoice->number);
266         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
267         spin_unlock(&gus->reg_lock);
268         if (pcmp == NULL)
269                 return;
270         /* are we active? */
271         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
272                 return;
273         /* load real volume - better precision */
274         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
275         if (pcmp->substream == NULL)
276                 return;
277         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
278         spin_lock(&gus->reg_lock);
279         snd_gf1_select_voice(gus, pvoice->number);
280         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
281         pcmp->final_volume = 1;
282         spin_unlock(&gus->reg_lock);
283 }
284 
285 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
286 {
287 }
288 
289 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
290                                   unsigned int pos, unsigned int count,
291                                   int w16, int invert)
292 {
293         unsigned int len;
294         unsigned long flags;
295 
296         /*
297         printk(KERN_DEBUG
298                "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n",
299                (int)buf, pos, count, gus->gf1.port);
300         */
301         while (count > 0) {
302                 len = count;
303                 if (len > 512)          /* limit, to allow IRQ */
304                         len = 512;
305                 count -= len;
306                 if (gus->interwave) {
307                         spin_lock_irqsave(&gus->reg_lock, flags);
308                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
309                         snd_gf1_dram_addr(gus, pos);
310                         if (w16) {
311                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
312                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
313                         } else {
314                                 outsb(GUSP(gus, DRAM), buf, len);
315                         }
316                         spin_unlock_irqrestore(&gus->reg_lock, flags);
317                         buf += 512;
318                         pos += 512;
319                 } else {
320                         invert = invert ? 0x80 : 0x00;
321                         if (w16) {
322                                 len >>= 1;
323                                 while (len--) {
324                                         snd_gf1_poke(gus, pos++, *buf++);
325                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
326                                 }
327                         } else {
328                                 while (len--)
329                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
330                         }
331                 }
332                 if (count > 0 && !in_interrupt()) {
333                         schedule_timeout_interruptible(1);
334                         if (signal_pending(current))
335                                 return -EAGAIN;
336                 }
337         }
338         return 0;
339 }
340 
341 static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
342                     unsigned int len)
343 {
344         unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
345         if (snd_BUG_ON(bpos > pcmp->dma_size))
346                 return -EIO;
347         if (snd_BUG_ON(bpos + len > pcmp->dma_size))
348                 return -EIO;
349         return bpos;
350 }
351 
352 static int playback_copy_ack(struct snd_pcm_substream *substream,
353                              unsigned int bpos, unsigned int len)
354 {
355         struct snd_pcm_runtime *runtime = substream->runtime;
356         struct gus_pcm_private *pcmp = runtime->private_data;
357         struct snd_gus_card *gus = pcmp->gus;
358         int w16, invert;
359 
360         if (len > 32)
361                 return snd_gf1_pcm_block_change(substream, bpos,
362                                                 pcmp->memory + bpos, len);
363 
364         w16 = (snd_pcm_format_width(runtime->format) == 16);
365         invert = snd_pcm_format_unsigned(runtime->format);
366         return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
367                                       pcmp->memory + bpos, len, w16, invert);
368 }
369 
370 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
371                                      int voice, unsigned long pos,
372                                      void __user *src, unsigned long count)
373 {
374         struct snd_pcm_runtime *runtime = substream->runtime;
375         struct gus_pcm_private *pcmp = runtime->private_data;
376         unsigned int len = count;
377         int bpos;
378 
379         bpos = get_bpos(pcmp, voice, pos, len);
380         if (bpos < 0)
381                 return pos;
382         if (copy_from_user(runtime->dma_area + bpos, src, len))
383                 return -EFAULT;
384         return playback_copy_ack(substream, bpos, len);
385 }
386 
387 static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream,
388                                             int voice, unsigned long pos,
389                                             void *src, unsigned long count)
390 {
391         struct snd_pcm_runtime *runtime = substream->runtime;
392         struct gus_pcm_private *pcmp = runtime->private_data;
393         unsigned int len = count;
394         int bpos;
395 
396         bpos = get_bpos(pcmp, voice, pos, len);
397         if (bpos < 0)
398                 return pos;
399         memcpy(runtime->dma_area + bpos, src, len);
400         return playback_copy_ack(substream, bpos, len);
401 }
402 
403 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
404                                         int voice, unsigned long pos,
405                                         unsigned long count)
406 {
407         struct snd_pcm_runtime *runtime = substream->runtime;
408         struct gus_pcm_private *pcmp = runtime->private_data;
409         unsigned int len = count;
410         int bpos;
411         
412         bpos = get_bpos(pcmp, voice, pos, len);
413         if (bpos < 0)
414                 return pos;
415         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
416                                    bytes_to_samples(runtime, count));
417         return playback_copy_ack(substream, bpos, len);
418 }
419 
420 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
421                                           struct snd_pcm_hw_params *hw_params)
422 {
423         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
424         struct snd_pcm_runtime *runtime = substream->runtime;
425         struct gus_pcm_private *pcmp = runtime->private_data;
426         int err;
427         
428         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
429                 return err;
430         if (err > 0) {  /* change */
431                 struct snd_gf1_mem_block *block;
432                 if (pcmp->memory > 0) {
433                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
434                         pcmp->memory = 0;
435                 }
436                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
437                                                SNDRV_GF1_MEM_OWNER_DRIVER,
438                                                "GF1 PCM",
439                                                runtime->dma_bytes, 1, 32,
440                                                NULL)) == NULL)
441                         return -ENOMEM;
442                 pcmp->memory = block->ptr;
443         }
444         pcmp->voices = params_channels(hw_params);
445         if (pcmp->pvoices[0] == NULL) {
446                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
447                         return -ENOMEM;
448                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
449                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
450                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
451                 pcmp->pvoices[0]->private_data = pcmp;
452         }
453         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
454                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
455                         return -ENOMEM;
456                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
457                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
458                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
459                 pcmp->pvoices[1]->private_data = pcmp;
460         } else if (pcmp->voices == 1) {
461                 if (pcmp->pvoices[1]) {
462                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
463                         pcmp->pvoices[1] = NULL;
464                 }
465         }
466         return 0;
467 }
468 
469 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
470 {
471         struct snd_pcm_runtime *runtime = substream->runtime;
472         struct gus_pcm_private *pcmp = runtime->private_data;
473 
474         snd_pcm_lib_free_pages(substream);
475         if (pcmp->pvoices[0]) {
476                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
477                 pcmp->pvoices[0] = NULL;
478         }
479         if (pcmp->pvoices[1]) {
480                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
481                 pcmp->pvoices[1] = NULL;
482         }
483         if (pcmp->memory > 0) {
484                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
485                 pcmp->memory = 0;
486         }
487         return 0;
488 }
489 
490 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
491 {
492         struct snd_pcm_runtime *runtime = substream->runtime;
493         struct gus_pcm_private *pcmp = runtime->private_data;
494 
495         pcmp->bpos = 0;
496         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
497         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
498         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
499         return 0;
500 }
501 
502 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
503                                         int cmd)
504 {
505         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
506         struct snd_pcm_runtime *runtime = substream->runtime;
507         struct gus_pcm_private *pcmp = runtime->private_data;
508         int voice;
509 
510         if (cmd == SNDRV_PCM_TRIGGER_START) {
511                 snd_gf1_pcm_trigger_up(substream);
512         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
513                 spin_lock(&pcmp->lock);
514                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
515                 spin_unlock(&pcmp->lock);
516                 voice = pcmp->pvoices[0]->number;
517                 snd_gf1_stop_voices(gus, voice, voice);
518                 if (pcmp->pvoices[1]) {
519                         voice = pcmp->pvoices[1]->number;
520                         snd_gf1_stop_voices(gus, voice, voice);
521                 }
522         } else {
523                 return -EINVAL;
524         }
525         return 0;
526 }
527 
528 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
529 {
530         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
531         struct snd_pcm_runtime *runtime = substream->runtime;
532         struct gus_pcm_private *pcmp = runtime->private_data;
533         unsigned int pos;
534         unsigned char voice_ctrl;
535 
536         pos = 0;
537         spin_lock(&gus->reg_lock);
538         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
539                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
540                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
541                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
542                 if (substream->runtime->channels > 1)
543                         pos <<= 1;
544                 pos = bytes_to_frames(runtime, pos);
545         }
546         spin_unlock(&gus->reg_lock);
547         return pos;
548 }
549 
550 static const struct snd_ratnum clock = {
551         .num = 9878400/16,
552         .den_min = 2,
553         .den_max = 257,
554         .den_step = 1,
555 };
556 
557 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks  = {
558         .nrats = 1,
559         .rats = &clock,
560 };
561 
562 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
563                                          struct snd_pcm_hw_params *hw_params)
564 {
565         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
566 
567         gus->c_dma_size = params_buffer_bytes(hw_params);
568         gus->c_period_size = params_period_bytes(hw_params);
569         gus->c_pos = 0;
570         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
571         if (params_channels(hw_params) > 1)
572                 gus->gf1.pcm_rcntrl_reg |= 2;
573         if (gus->gf1.dma2 > 3)
574                 gus->gf1.pcm_rcntrl_reg |= 4;
575         if (snd_pcm_format_unsigned(params_format(hw_params)))
576                 gus->gf1.pcm_rcntrl_reg |= 0x80;
577         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
578 }
579 
580 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
581 {
582         return snd_pcm_lib_free_pages(substream);
583 }
584 
585 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
586 {
587         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
588         struct snd_pcm_runtime *runtime = substream->runtime;
589 
590         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
591         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
592         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
593         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
594         return 0;
595 }
596 
597 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
598                                        int cmd)
599 {
600         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
601         int val;
602         
603         if (cmd == SNDRV_PCM_TRIGGER_START) {
604                 val = gus->gf1.pcm_rcntrl_reg;
605         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
606                 val = 0;
607         } else {
608                 return -EINVAL;
609         }
610 
611         spin_lock(&gus->reg_lock);
612         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
613         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
614         spin_unlock(&gus->reg_lock);
615         return 0;
616 }
617 
618 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
619 {
620         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
621         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
622         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
623         return pos;
624 }
625 
626 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
627 {
628         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
629         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
630         if (gus->pcm_cap_substream != NULL) {
631                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 
632                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
633                 gus->c_pos += gus->c_period_size;
634                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
635         }
636 }
637 
638 static const struct snd_pcm_hardware snd_gf1_pcm_playback =
639 {
640         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
641         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
642                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
643         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
644         .rate_min =             5510,
645         .rate_max =             48000,
646         .channels_min =         1,
647         .channels_max =         2,
648         .buffer_bytes_max =     (128*1024),
649         .period_bytes_min =     64,
650         .period_bytes_max =     (128*1024),
651         .periods_min =          1,
652         .periods_max =          1024,
653         .fifo_size =            0,
654 };
655 
656 static const struct snd_pcm_hardware snd_gf1_pcm_capture =
657 {
658         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
659                                  SNDRV_PCM_INFO_MMAP_VALID),
660         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
661         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
662         .rate_min =             5510,
663         .rate_max =             44100,
664         .channels_min =         1,
665         .channels_max =         2,
666         .buffer_bytes_max =     (128*1024),
667         .period_bytes_min =     64,
668         .period_bytes_max =     (128*1024),
669         .periods_min =          1,
670         .periods_max =          1024,
671         .fifo_size =            0,
672 };
673 
674 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
675 {
676         kfree(runtime->private_data);
677 }
678 
679 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
680 {
681         struct gus_pcm_private *pcmp;
682         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
683         struct snd_pcm_runtime *runtime = substream->runtime;
684         int err;
685 
686         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
687         if (pcmp == NULL)
688                 return -ENOMEM;
689         pcmp->gus = gus;
690         spin_lock_init(&pcmp->lock);
691         init_waitqueue_head(&pcmp->sleep);
692         atomic_set(&pcmp->dma_count, 0);
693 
694         runtime->private_data = pcmp;
695         runtime->private_free = snd_gf1_pcm_playback_free;
696 
697 #if 0
698         printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
699                (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
700 #endif
701         if ((err = snd_gf1_dma_init(gus)) < 0)
702                 return err;
703         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
704         pcmp->substream = substream;
705         runtime->hw = snd_gf1_pcm_playback;
706         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
707         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
708         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
709         return 0;
710 }
711 
712 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
713 {
714         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
715         struct snd_pcm_runtime *runtime = substream->runtime;
716         struct gus_pcm_private *pcmp = runtime->private_data;
717         
718         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
719                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
720 
721         snd_gf1_dma_done(gus);  
722         return 0;
723 }
724 
725 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
726 {
727         struct snd_pcm_runtime *runtime = substream->runtime;
728         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
729 
730         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
731         gus->pcm_cap_substream = substream;
732         substream->runtime->hw = snd_gf1_pcm_capture;
733         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
734         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
735         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
736                                       &hw_constraints_clocks);
737         return 0;
738 }
739 
740 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
741 {
742         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
743 
744         gus->pcm_cap_substream = NULL;
745         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
746         return 0;
747 }
748 
749 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
750 {
751         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
752         uinfo->count = 2;
753         uinfo->value.integer.min = 0;
754         uinfo->value.integer.max = 127;
755         return 0;
756 }
757 
758 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
759 {
760         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
761         unsigned long flags;
762         
763         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
764         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
765         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
766         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
767         return 0;
768 }
769 
770 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
771 {
772         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
773         unsigned long flags;
774         int change;
775         unsigned int idx;
776         unsigned short val1, val2, vol;
777         struct gus_pcm_private *pcmp;
778         struct snd_gus_voice *pvoice;
779         
780         val1 = ucontrol->value.integer.value[0] & 127;
781         val2 = ucontrol->value.integer.value[1] & 127;
782         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
783         change = val1 != gus->gf1.pcm_volume_level_left1 ||
784                  val2 != gus->gf1.pcm_volume_level_right1;
785         gus->gf1.pcm_volume_level_left1 = val1;
786         gus->gf1.pcm_volume_level_right1 = val2;
787         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
788         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
789         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
790         /* are we active? */
791         spin_lock_irqsave(&gus->voice_alloc, flags);
792         for (idx = 0; idx < 32; idx++) {
793                 pvoice = &gus->gf1.voices[idx];
794                 if (!pvoice->pcm)
795                         continue;
796                 pcmp = pvoice->private_data;
797                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
798                         continue;
799                 /* load real volume - better precision */
800                 spin_lock(&gus->reg_lock);
801                 snd_gf1_select_voice(gus, pvoice->number);
802                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
803                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
804                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
805                 pcmp->final_volume = 1;
806                 spin_unlock(&gus->reg_lock);
807         }
808         spin_unlock_irqrestore(&gus->voice_alloc, flags);
809         return change;
810 }
811 
812 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control =
813 {
814         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
815         .name = "PCM Playback Volume",
816         .info = snd_gf1_pcm_volume_info,
817         .get = snd_gf1_pcm_volume_get,
818         .put = snd_gf1_pcm_volume_put
819 };
820 
821 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
822 {
823         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
824         .name = "GPCM Playback Volume",
825         .info = snd_gf1_pcm_volume_info,
826         .get = snd_gf1_pcm_volume_get,
827         .put = snd_gf1_pcm_volume_put
828 };
829 
830 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
831         .open =         snd_gf1_pcm_playback_open,
832         .close =        snd_gf1_pcm_playback_close,
833         .ioctl =        snd_pcm_lib_ioctl,
834         .hw_params =    snd_gf1_pcm_playback_hw_params,
835         .hw_free =      snd_gf1_pcm_playback_hw_free,
836         .prepare =      snd_gf1_pcm_playback_prepare,
837         .trigger =      snd_gf1_pcm_playback_trigger,
838         .pointer =      snd_gf1_pcm_playback_pointer,
839         .copy_user =    snd_gf1_pcm_playback_copy,
840         .copy_kernel =  snd_gf1_pcm_playback_copy_kernel,
841         .fill_silence = snd_gf1_pcm_playback_silence,
842 };
843 
844 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
845         .open =         snd_gf1_pcm_capture_open,
846         .close =        snd_gf1_pcm_capture_close,
847         .ioctl =        snd_pcm_lib_ioctl,
848         .hw_params =    snd_gf1_pcm_capture_hw_params,
849         .hw_free =      snd_gf1_pcm_capture_hw_free,
850         .prepare =      snd_gf1_pcm_capture_prepare,
851         .trigger =      snd_gf1_pcm_capture_trigger,
852         .pointer =      snd_gf1_pcm_capture_pointer,
853 };
854 
855 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
856 {
857         struct snd_card *card;
858         struct snd_kcontrol *kctl;
859         struct snd_pcm *pcm;
860         struct snd_pcm_substream *substream;
861         int capture, err;
862 
863         card = gus->card;
864         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
865         err = snd_pcm_new(card,
866                           gus->interwave ? "AMD InterWave" : "GF1",
867                           pcm_dev,
868                           gus->gf1.pcm_channels / 2,
869                           capture,
870                           &pcm);
871         if (err < 0)
872                 return err;
873         pcm->private_data = gus;
874         /* playback setup */
875         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
876 
877         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
878                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
879                                               card->dev,
880                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
881         
882         pcm->info_flags = 0;
883         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
884         if (capture) {
885                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
886                 if (gus->gf1.dma2 == gus->gf1.dma1)
887                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
888                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
889                                               SNDRV_DMA_TYPE_DEV, card->dev,
890                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
891         }
892         strcpy(pcm->name, pcm->id);
893         if (gus->interwave) {
894                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
895         }
896         strcat(pcm->name, " (synth)");
897         gus->pcm = pcm;
898 
899         if (gus->codec_flag)
900                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
901         else
902                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
903         if ((err = snd_ctl_add(card, kctl)) < 0)
904                 return err;
905         kctl->id.index = control_index;
906 
907         return 0;
908 }
909 
910 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp