[ALSA] Remove xxx_t typedefs: ISA GUS
[linux-2.6.git] / sound / isa / gus / gus_pcm.c
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3  *  Routines for control of GF1 chip (PCM things)
4  *
5  *  InterWave chips supports interleaved DMA, but this feature isn't used in
6  *  this code.
7  *  
8  *  This code emulates autoinit DMA transfer for playback, recording by GF1
9  *  chip doesn't support autoinit DMA.
10  *
11  *
12  *   This program is free software; you can redistribute it and/or modify
13  *   it under the terms of the GNU General Public License as published by
14  *   the Free Software Foundation; either version 2 of the License, or
15  *   (at your option) any later version.
16  *
17  *   This program is distributed in the hope that it will be useful,
18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *   GNU General Public License for more details.
21  *
22  *   You should have received a copy of the GNU General Public License
23  *   along with this program; if not, write to the Free Software
24  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
25  *
26  */
27
28 #include <sound/driver.h>
29 #include <asm/dma.h>
30 #include <linux/slab.h>
31 #include <sound/core.h>
32 #include <sound/control.h>
33 #include <sound/gus.h>
34 #include <sound/pcm_params.h>
35 #include "gus_tables.h"
36
37 /* maximum rate */
38
39 #define SNDRV_GF1_PCM_RATE              48000
40
41 #define SNDRV_GF1_PCM_PFLG_NONE         0
42 #define SNDRV_GF1_PCM_PFLG_ACTIVE       (1<<0)
43 #define SNDRV_GF1_PCM_PFLG_NEUTRAL      (2<<0)
44
45 struct gus_pcm_private {
46         struct snd_gus_card * gus;
47         struct snd_pcm_substream *substream;
48         spinlock_t lock;
49         unsigned int voices;
50         struct snd_gus_voice *pvoices[2];
51         unsigned int memory;
52         unsigned short flags;
53         unsigned char voice_ctrl, ramp_ctrl;
54         unsigned int bpos;
55         unsigned int blocks;
56         unsigned int block_size;
57         unsigned int dma_size;
58         wait_queue_head_t sleep;
59         atomic_t dma_count;
60         int final_volume;
61 };
62
63 static int snd_gf1_pcm_use_dma = 1;
64
65 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
66 {
67         struct gus_pcm_private *pcmp = private_data;
68
69         if (pcmp) {
70                 atomic_dec(&pcmp->dma_count);
71                 wake_up(&pcmp->sleep);
72         }
73 }
74
75 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
76                                     unsigned int offset,
77                                     unsigned int addr,
78                                     unsigned int count)
79 {
80         struct snd_gf1_dma_block block;
81         struct snd_pcm_runtime *runtime = substream->runtime;
82         struct gus_pcm_private *pcmp = runtime->private_data;
83
84         count += offset & 31;
85         offset &= ~31;
86         // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
87         memset(&block, 0, sizeof(block));
88         block.cmd = SNDRV_GF1_DMA_IRQ;
89         if (snd_pcm_format_unsigned(runtime->format))
90                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
91         if (snd_pcm_format_width(runtime->format) == 16)
92                 block.cmd |= SNDRV_GF1_DMA_16BIT;
93         block.addr = addr & ~31;
94         block.buffer = runtime->dma_area + offset;
95         block.buf_addr = runtime->dma_addr + offset;
96         block.count = count;
97         block.private_data = pcmp;
98         block.ack = snd_gf1_pcm_block_change_ack;
99         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
100                 atomic_inc(&pcmp->dma_count);
101         return 0;
102 }
103
104 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
105 {
106         struct snd_pcm_runtime *runtime = substream->runtime;
107         struct gus_pcm_private *pcmp = runtime->private_data;
108         struct snd_gus_card * gus = pcmp->gus;
109         unsigned long flags;
110         unsigned char voice_ctrl, ramp_ctrl;
111         unsigned short rate;
112         unsigned int curr, begin, end;
113         unsigned short vol;
114         unsigned char pan;
115         unsigned int voice;
116
117         if (substream == NULL)
118                 return;
119         spin_lock_irqsave(&pcmp->lock, flags);
120         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
121                 spin_unlock_irqrestore(&pcmp->lock, flags);
122                 return;
123         }
124         pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
125         pcmp->final_volume = 0;
126         spin_unlock_irqrestore(&pcmp->lock, flags);
127         rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
128         /* enable WAVE IRQ */
129         voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
130         /* enable RAMP IRQ + rollover */
131         ramp_ctrl = 0x24;
132         if (pcmp->blocks == 1) {
133                 voice_ctrl |= 0x08;     /* loop enable */
134                 ramp_ctrl &= ~0x04;     /* disable rollover */
135         }
136         for (voice = 0; voice < pcmp->voices; voice++) {
137                 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
138                 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
139                 end = curr + (pcmp->block_size / runtime->channels);
140                 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
141                 // snd_printk("init: curr=0x%x, begin=0x%x, end=0x%x, ctrl=0x%x, ramp=0x%x, rate=0x%x\n", curr, begin, end, voice_ctrl, ramp_ctrl, rate);
142                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
143                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
144                 spin_lock_irqsave(&gus->reg_lock, flags);
145                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
146                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
147                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
148                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
149                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
150                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
151                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
152                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
153                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
154                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
155                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
156                 if (!gus->gf1.enh_mode) {
157                         snd_gf1_delay(gus);
158                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
159                 }
160                 spin_unlock_irqrestore(&gus->reg_lock, flags);
161         }
162         spin_lock_irqsave(&gus->reg_lock, flags);
163         for (voice = 0; voice < pcmp->voices; voice++) {
164                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
165                 if (gus->gf1.enh_mode)
166                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
167                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
168                 voice_ctrl &= ~0x20;
169         }
170         voice_ctrl |= 0x20;
171         if (!gus->gf1.enh_mode) {
172                 snd_gf1_delay(gus);
173                 for (voice = 0; voice < pcmp->voices; voice++) {
174                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
175                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
176                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
177                 }
178         }
179         spin_unlock_irqrestore(&gus->reg_lock, flags);
180 }
181
182 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
183                                        struct snd_gus_voice *pvoice)
184 {
185         struct gus_pcm_private * pcmp;
186         struct snd_pcm_runtime *runtime;
187         unsigned char voice_ctrl, ramp_ctrl;
188         unsigned int idx;
189         unsigned int end, step;
190
191         if (!pvoice->private_data) {
192                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
193                 snd_gf1_smart_stop_voice(gus, pvoice->number);
194                 return;
195         }
196         pcmp = pvoice->private_data;
197         if (pcmp == NULL) {
198                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
199                 snd_gf1_smart_stop_voice(gus, pvoice->number);
200                 return;
201         }               
202         gus = pcmp->gus;
203         runtime = pcmp->substream->runtime;
204
205         spin_lock(&gus->reg_lock);
206         snd_gf1_select_voice(gus, pvoice->number);
207         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
208         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
209 #if 0
210         snd_gf1_select_voice(gus, pvoice->number);
211         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
212         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
213         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
214         snd_gf1_select_voice(gus, pvoice->number);
215 #endif
216         pcmp->bpos++;
217         pcmp->bpos %= pcmp->blocks;
218         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
219                 voice_ctrl |= 0x08;     /* enable loop */
220         } else {
221                 ramp_ctrl |= 0x04;      /* enable rollover */
222         }
223         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
224         end -= voice_ctrl & 4 ? 2 : 1;
225         step = pcmp->dma_size / runtime->channels;
226         voice_ctrl |= 0x20;
227         if (!pcmp->final_volume) {
228                 ramp_ctrl |= 0x20;
229                 ramp_ctrl &= ~0x03;
230         }
231         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
232                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
233                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
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         if (!gus->gf1.enh_mode) {
239                 snd_gf1_delay(gus);
240                 voice_ctrl |= 0x20;
241                 for (idx = 0; idx < pcmp->voices; idx++) {
242                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
243                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
244                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
245                         voice_ctrl &= ~0x20;
246                 }
247         }
248         spin_unlock(&gus->reg_lock);
249
250         snd_pcm_period_elapsed(pcmp->substream);
251 #if 0
252         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
253             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
254                 end = pcmp->bpos * pcmp->block_size;
255                 if (runtime->channels > 1) {
256                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
257                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
258                 } else {
259                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
260                 }
261         }
262 #endif
263 }
264
265 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
266                                          struct snd_gus_voice * pvoice)
267 {
268         unsigned short vol;
269         int cvoice;
270         struct gus_pcm_private *pcmp = pvoice->private_data;
271
272         /* stop ramp, but leave rollover bit untouched */
273         spin_lock(&gus->reg_lock);
274         snd_gf1_select_voice(gus, pvoice->number);
275         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
276         spin_unlock(&gus->reg_lock);
277         if (pcmp == NULL)
278                 return;
279         /* are we active? */
280         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
281                 return;
282         /* load real volume - better precision */
283         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
284         if (pcmp->substream == NULL)
285                 return;
286         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
287         spin_lock(&gus->reg_lock);
288         snd_gf1_select_voice(gus, pvoice->number);
289         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
290         pcmp->final_volume = 1;
291         spin_unlock(&gus->reg_lock);
292 }
293
294 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
295 {
296 }
297
298 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
299                                   unsigned int pos, unsigned int count,
300                                   int w16, int invert)
301 {
302         unsigned int len;
303         unsigned long flags;
304
305         // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
306         while (count > 0) {
307                 len = count;
308                 if (len > 512)          /* limit, to allow IRQ */
309                         len = 512;
310                 count -= len;
311                 if (gus->interwave) {
312                         spin_lock_irqsave(&gus->reg_lock, flags);
313                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
314                         snd_gf1_dram_addr(gus, pos);
315                         if (w16) {
316                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
317                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
318                         } else {
319                                 outsb(GUSP(gus, DRAM), buf, len);
320                         }
321                         spin_unlock_irqrestore(&gus->reg_lock, flags);
322                         buf += 512;
323                         pos += 512;
324                 } else {
325                         invert = invert ? 0x80 : 0x00;
326                         if (w16) {
327                                 len >>= 1;
328                                 while (len--) {
329                                         snd_gf1_poke(gus, pos++, *buf++);
330                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
331                                 }
332                         } else {
333                                 while (len--)
334                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
335                         }
336                 }
337                 if (count > 0 && !in_interrupt()) {
338                         schedule_timeout_interruptible(1);
339                         if (signal_pending(current))
340                                 return -EAGAIN;
341                 }
342         }
343         return 0;
344 }
345
346 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
347                                      int voice,
348                                      snd_pcm_uframes_t pos,
349                                      void __user *src,
350                                      snd_pcm_uframes_t count)
351 {
352         struct snd_pcm_runtime *runtime = substream->runtime;
353         struct gus_pcm_private *pcmp = runtime->private_data;
354         unsigned int bpos, len;
355         
356         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
357         len = samples_to_bytes(runtime, count);
358         snd_assert(bpos <= pcmp->dma_size, return -EIO);
359         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
360         if (copy_from_user(runtime->dma_area + bpos, src, len))
361                 return -EFAULT;
362         if (snd_gf1_pcm_use_dma && len > 32) {
363                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
364         } else {
365                 struct snd_gus_card *gus = pcmp->gus;
366                 int err, w16, invert;
367
368                 w16 = (snd_pcm_format_width(runtime->format) == 16);
369                 invert = snd_pcm_format_unsigned(runtime->format);
370                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
371                         return err;
372         }
373         return 0;
374 }
375
376 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
377                                         int voice,
378                                         snd_pcm_uframes_t pos,
379                                         snd_pcm_uframes_t count)
380 {
381         struct snd_pcm_runtime *runtime = substream->runtime;
382         struct gus_pcm_private *pcmp = runtime->private_data;
383         unsigned int bpos, len;
384         
385         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
386         len = samples_to_bytes(runtime, count);
387         snd_assert(bpos <= pcmp->dma_size, return -EIO);
388         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
389         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
390         if (snd_gf1_pcm_use_dma && len > 32) {
391                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
392         } else {
393                 struct snd_gus_card *gus = pcmp->gus;
394                 int err, w16, invert;
395
396                 w16 = (snd_pcm_format_width(runtime->format) == 16);
397                 invert = snd_pcm_format_unsigned(runtime->format);
398                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
399                         return err;
400         }
401         return 0;
402 }
403
404 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
405                                           struct snd_pcm_hw_params *hw_params)
406 {
407         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
408         struct snd_pcm_runtime *runtime = substream->runtime;
409         struct gus_pcm_private *pcmp = runtime->private_data;
410         int err;
411         
412         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
413                 return err;
414         if (err > 0) {  /* change */
415                 struct snd_gf1_mem_block *block;
416                 if (pcmp->memory > 0) {
417                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
418                         pcmp->memory = 0;
419                 }
420                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
421                                                SNDRV_GF1_MEM_OWNER_DRIVER,
422                                                "GF1 PCM",
423                                                runtime->dma_bytes, 1, 32,
424                                                NULL)) == NULL)
425                         return -ENOMEM;
426                 pcmp->memory = block->ptr;
427         }
428         pcmp->voices = params_channels(hw_params);
429         if (pcmp->pvoices[0] == NULL) {
430                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
431                         return -ENOMEM;
432                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
433                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
434                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
435                 pcmp->pvoices[0]->private_data = pcmp;
436         }
437         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
438                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
439                         return -ENOMEM;
440                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
441                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
442                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
443                 pcmp->pvoices[1]->private_data = pcmp;
444         } else if (pcmp->voices == 1) {
445                 if (pcmp->pvoices[1]) {
446                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
447                         pcmp->pvoices[1] = NULL;
448                 }
449         }
450         return 0;
451 }
452
453 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
454 {
455         struct snd_pcm_runtime *runtime = substream->runtime;
456         struct gus_pcm_private *pcmp = runtime->private_data;
457
458         snd_pcm_lib_free_pages(substream);
459         if (pcmp->pvoices[0]) {
460                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
461                 pcmp->pvoices[0] = NULL;
462         }
463         if (pcmp->pvoices[1]) {
464                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
465                 pcmp->pvoices[1] = NULL;
466         }
467         if (pcmp->memory > 0) {
468                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
469                 pcmp->memory = 0;
470         }
471         return 0;
472 }
473
474 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
475 {
476         struct snd_pcm_runtime *runtime = substream->runtime;
477         struct gus_pcm_private *pcmp = runtime->private_data;
478
479         pcmp->bpos = 0;
480         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
481         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
482         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
483         return 0;
484 }
485
486 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
487                                         int cmd)
488 {
489         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
490         struct snd_pcm_runtime *runtime = substream->runtime;
491         struct gus_pcm_private *pcmp = runtime->private_data;
492         int voice;
493
494         if (cmd == SNDRV_PCM_TRIGGER_START) {
495                 snd_gf1_pcm_trigger_up(substream);
496         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
497                 spin_lock(&pcmp->lock);
498                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
499                 spin_unlock(&pcmp->lock);
500                 voice = pcmp->pvoices[0]->number;
501                 snd_gf1_stop_voices(gus, voice, voice);
502                 if (pcmp->pvoices[1]) {
503                         voice = pcmp->pvoices[1]->number;
504                         snd_gf1_stop_voices(gus, voice, voice);
505                 }
506         } else {
507                 return -EINVAL;
508         }
509         return 0;
510 }
511
512 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
513 {
514         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
515         struct snd_pcm_runtime *runtime = substream->runtime;
516         struct gus_pcm_private *pcmp = runtime->private_data;
517         unsigned int pos;
518         unsigned char voice_ctrl;
519
520         pos = 0;
521         spin_lock(&gus->reg_lock);
522         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
523                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
524                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
525                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
526                 if (substream->runtime->channels > 1)
527                         pos <<= 1;
528                 pos = bytes_to_frames(runtime, pos);
529         }
530         spin_unlock(&gus->reg_lock);
531         return pos;
532 }
533
534 static struct snd_ratnum clock = {
535         .num = 9878400/16,
536         .den_min = 2,
537         .den_max = 257,
538         .den_step = 1,
539 };
540
541 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks  = {
542         .nrats = 1,
543         .rats = &clock,
544 };
545
546 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
547                                          struct snd_pcm_hw_params *hw_params)
548 {
549         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
550
551         gus->c_dma_size = params_buffer_bytes(hw_params);
552         gus->c_period_size = params_period_bytes(hw_params);
553         gus->c_pos = 0;
554         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
555         if (params_channels(hw_params) > 1)
556                 gus->gf1.pcm_rcntrl_reg |= 2;
557         if (gus->gf1.dma2 > 3)
558                 gus->gf1.pcm_rcntrl_reg |= 4;
559         if (snd_pcm_format_unsigned(params_format(hw_params)))
560                 gus->gf1.pcm_rcntrl_reg |= 0x80;
561         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
562 }
563
564 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
565 {
566         return snd_pcm_lib_free_pages(substream);
567 }
568
569 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
570 {
571         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
572         struct snd_pcm_runtime *runtime = substream->runtime;
573
574         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
575         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
576         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
577         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
578         return 0;
579 }
580
581 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
582                                        int cmd)
583 {
584         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
585         int val;
586         
587         if (cmd == SNDRV_PCM_TRIGGER_START) {
588                 val = gus->gf1.pcm_rcntrl_reg;
589         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
590                 val = 0;
591         } else {
592                 return -EINVAL;
593         }
594
595         spin_lock(&gus->reg_lock);
596         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
597         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
598         spin_unlock(&gus->reg_lock);
599         return 0;
600 }
601
602 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
603 {
604         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
605         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
606         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
607         return pos;
608 }
609
610 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
611 {
612         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
613         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
614         if (gus->pcm_cap_substream != NULL) {
615                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 
616                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
617                 gus->c_pos += gus->c_period_size;
618                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
619         }
620 }
621
622 static struct snd_pcm_hardware snd_gf1_pcm_playback =
623 {
624         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
625         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
626                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
627         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
628         .rate_min =             5510,
629         .rate_max =             48000,
630         .channels_min =         1,
631         .channels_max =         2,
632         .buffer_bytes_max =     (128*1024),
633         .period_bytes_min =     64,
634         .period_bytes_max =     (128*1024),
635         .periods_min =          1,
636         .periods_max =          1024,
637         .fifo_size =            0,
638 };
639
640 static struct snd_pcm_hardware snd_gf1_pcm_capture =
641 {
642         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
643                                  SNDRV_PCM_INFO_MMAP_VALID),
644         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
645         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
646         .rate_min =             5510,
647         .rate_max =             44100,
648         .channels_min =         1,
649         .channels_max =         2,
650         .buffer_bytes_max =     (128*1024),
651         .period_bytes_min =     64,
652         .period_bytes_max =     (128*1024),
653         .periods_min =          1,
654         .periods_max =          1024,
655         .fifo_size =            0,
656 };
657
658 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
659 {
660         kfree(runtime->private_data);
661 }
662
663 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
664 {
665         struct gus_pcm_private *pcmp;
666         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
667         struct snd_pcm_runtime *runtime = substream->runtime;
668         int err;
669
670         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
671         if (pcmp == NULL)
672                 return -ENOMEM;
673         pcmp->gus = gus;
674         spin_lock_init(&pcmp->lock);
675         init_waitqueue_head(&pcmp->sleep);
676         atomic_set(&pcmp->dma_count, 0);
677
678         runtime->private_data = pcmp;
679         runtime->private_free = snd_gf1_pcm_playback_free;
680
681 #if 0
682         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
683 #endif
684         if ((err = snd_gf1_dma_init(gus)) < 0)
685                 return err;
686         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
687         pcmp->substream = substream;
688         runtime->hw = snd_gf1_pcm_playback;
689         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
690         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
691         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
692         return 0;
693 }
694
695 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
696 {
697         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
698         struct snd_pcm_runtime *runtime = substream->runtime;
699         struct gus_pcm_private *pcmp = runtime->private_data;
700         
701         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
702                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
703
704         snd_gf1_dma_done(gus);  
705         return 0;
706 }
707
708 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
709 {
710         struct snd_pcm_runtime *runtime = substream->runtime;
711         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
712
713         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
714         gus->pcm_cap_substream = substream;
715         substream->runtime->hw = snd_gf1_pcm_capture;
716         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
717         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
718         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
719                                       &hw_constraints_clocks);
720         return 0;
721 }
722
723 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
724 {
725         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
726
727         gus->pcm_cap_substream = NULL;
728         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
729         return 0;
730 }
731
732 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
733 {
734         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
735         uinfo->count = 2;
736         uinfo->value.integer.min = 0;
737         uinfo->value.integer.max = 127;
738         return 0;
739 }
740
741 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
742 {
743         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
744         unsigned long flags;
745         
746         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
747         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
748         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
749         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
750         return 0;
751 }
752
753 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
754 {
755         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
756         unsigned long flags;
757         int change;
758         unsigned int idx;
759         unsigned short val1, val2, vol;
760         struct gus_pcm_private *pcmp;
761         struct snd_gus_voice *pvoice;
762         
763         val1 = ucontrol->value.integer.value[0] & 127;
764         val2 = ucontrol->value.integer.value[1] & 127;
765         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
766         change = val1 != gus->gf1.pcm_volume_level_left1 ||
767                  val2 != gus->gf1.pcm_volume_level_right1;
768         gus->gf1.pcm_volume_level_left1 = val1;
769         gus->gf1.pcm_volume_level_right1 = val2;
770         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
771         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
772         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
773         /* are we active? */
774         spin_lock_irqsave(&gus->voice_alloc, flags);
775         for (idx = 0; idx < 32; idx++) {
776                 pvoice = &gus->gf1.voices[idx];
777                 if (!pvoice->pcm)
778                         continue;
779                 pcmp = pvoice->private_data;
780                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
781                         continue;
782                 /* load real volume - better precision */
783                 spin_lock_irqsave(&gus->reg_lock, flags);
784                 snd_gf1_select_voice(gus, pvoice->number);
785                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
786                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
787                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
788                 pcmp->final_volume = 1;
789                 spin_unlock_irqrestore(&gus->reg_lock, flags);
790         }
791         spin_unlock_irqrestore(&gus->voice_alloc, flags);
792         return change;
793 }
794
795 static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
796 {
797         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
798         .name = "PCM Playback Volume",
799         .info = snd_gf1_pcm_volume_info,
800         .get = snd_gf1_pcm_volume_get,
801         .put = snd_gf1_pcm_volume_put
802 };
803
804 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
805 {
806         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
807         .name = "GPCM Playback Volume",
808         .info = snd_gf1_pcm_volume_info,
809         .get = snd_gf1_pcm_volume_get,
810         .put = snd_gf1_pcm_volume_put
811 };
812
813 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
814         .open =         snd_gf1_pcm_playback_open,
815         .close =        snd_gf1_pcm_playback_close,
816         .ioctl =        snd_pcm_lib_ioctl,
817         .hw_params =    snd_gf1_pcm_playback_hw_params,
818         .hw_free =      snd_gf1_pcm_playback_hw_free,
819         .prepare =      snd_gf1_pcm_playback_prepare,
820         .trigger =      snd_gf1_pcm_playback_trigger,
821         .pointer =      snd_gf1_pcm_playback_pointer,
822         .copy =         snd_gf1_pcm_playback_copy,
823         .silence =      snd_gf1_pcm_playback_silence,
824 };
825
826 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
827         .open =         snd_gf1_pcm_capture_open,
828         .close =        snd_gf1_pcm_capture_close,
829         .ioctl =        snd_pcm_lib_ioctl,
830         .hw_params =    snd_gf1_pcm_capture_hw_params,
831         .hw_free =      snd_gf1_pcm_capture_hw_free,
832         .prepare =      snd_gf1_pcm_capture_prepare,
833         .trigger =      snd_gf1_pcm_capture_trigger,
834         .pointer =      snd_gf1_pcm_capture_pointer,
835 };
836
837 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm)
838 {
839         struct snd_card *card;
840         struct snd_kcontrol *kctl;
841         struct snd_pcm *pcm;
842         struct snd_pcm_substream *substream;
843         int capture, err;
844
845         if (rpcm)
846                 *rpcm = NULL;
847         card = gus->card;
848         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
849         err = snd_pcm_new(card,
850                           gus->interwave ? "AMD InterWave" : "GF1",
851                           pcm_dev,
852                           gus->gf1.pcm_channels / 2,
853                           capture,
854                           &pcm);
855         if (err < 0)
856                 return err;
857         pcm->private_data = gus;
858         /* playback setup */
859         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
860
861         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
862                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
863                                               snd_dma_isa_data(),
864                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
865         
866         pcm->info_flags = 0;
867         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
868         if (capture) {
869                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
870                 if (gus->gf1.dma2 == gus->gf1.dma1)
871                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
872                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
873                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
874                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
875         }
876         strcpy(pcm->name, pcm->id);
877         if (gus->interwave) {
878                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
879         }
880         strcat(pcm->name, " (synth)");
881         gus->pcm = pcm;
882
883         if (gus->codec_flag)
884                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
885         else
886                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
887         if ((err = snd_ctl_add(card, kctl)) < 0)
888                 return err;
889         kctl->id.index = control_index;
890
891         if (rpcm)
892                 *rpcm = pcm;
893         return 0;
894 }
895