[ALSA] Fix schedule_timeout usage
[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 typedef struct {
46         snd_gus_card_t * gus;
47         snd_pcm_substream_t * substream;
48         spinlock_t lock;
49         unsigned int voices;
50         snd_gus_voice_t *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 } gus_pcm_private_t;
62
63 static int snd_gf1_pcm_use_dma = 1;
64
65 static void snd_gf1_pcm_block_change_ack(snd_gus_card_t * gus, void *private_data)
66 {
67         gus_pcm_private_t *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(snd_pcm_substream_t * substream,
76                                     unsigned int offset,
77                                     unsigned int addr,
78                                     unsigned int count)
79 {
80         snd_gf1_dma_block_t block;
81         snd_pcm_runtime_t *runtime = substream->runtime;
82         gus_pcm_private_t *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(snd_pcm_substream_t * substream)
105 {
106         snd_pcm_runtime_t *runtime = substream->runtime;
107         gus_pcm_private_t *pcmp = runtime->private_data;
108         snd_gus_card_t * 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(snd_gus_card_t * gus, snd_gus_voice_t *pvoice)
183 {
184         gus_pcm_private_t * pcmp;
185         snd_pcm_runtime_t * runtime;
186         unsigned char voice_ctrl, ramp_ctrl;
187         unsigned int idx;
188         unsigned int end, step;
189
190         if (!pvoice->private_data) {
191                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
192                 snd_gf1_smart_stop_voice(gus, pvoice->number);
193                 return;
194         }
195         pcmp = pvoice->private_data;
196         if (pcmp == NULL) {
197                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
198                 snd_gf1_smart_stop_voice(gus, pvoice->number);
199                 return;
200         }               
201         gus = pcmp->gus;
202         runtime = pcmp->substream->runtime;
203
204         spin_lock(&gus->reg_lock);
205         snd_gf1_select_voice(gus, pvoice->number);
206         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
207         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
208 #if 0
209         snd_gf1_select_voice(gus, pvoice->number);
210         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
211         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
212         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
213         snd_gf1_select_voice(gus, pvoice->number);
214 #endif
215         pcmp->bpos++;
216         pcmp->bpos %= pcmp->blocks;
217         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
218                 voice_ctrl |= 0x08;     /* enable loop */
219         } else {
220                 ramp_ctrl |= 0x04;      /* enable rollover */
221         }
222         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
223         end -= voice_ctrl & 4 ? 2 : 1;
224         step = pcmp->dma_size / runtime->channels;
225         voice_ctrl |= 0x20;
226         if (!pcmp->final_volume) {
227                 ramp_ctrl |= 0x20;
228                 ramp_ctrl &= ~0x03;
229         }
230         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
231                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
232                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
233                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
234                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
235                 voice_ctrl &= ~0x20;
236         }
237         if (!gus->gf1.enh_mode) {
238                 snd_gf1_delay(gus);
239                 voice_ctrl |= 0x20;
240                 for (idx = 0; idx < pcmp->voices; idx++) {
241                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
242                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
243                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
244                         voice_ctrl &= ~0x20;
245                 }
246         }
247         spin_unlock(&gus->reg_lock);
248
249         snd_pcm_period_elapsed(pcmp->substream);
250 #if 0
251         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
252             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
253                 end = pcmp->bpos * pcmp->block_size;
254                 if (runtime->channels > 1) {
255                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
256                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
257                 } else {
258                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
259                 }
260         }
261 #endif
262 }
263
264 static void snd_gf1_pcm_interrupt_volume(snd_gus_card_t * gus, snd_gus_voice_t * pvoice)
265 {
266         unsigned short vol;
267         int cvoice;
268         gus_pcm_private_t *pcmp = pvoice->private_data;
269
270         /* stop ramp, but leave rollover bit untouched */
271         spin_lock(&gus->reg_lock);
272         snd_gf1_select_voice(gus, pvoice->number);
273         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
274         spin_unlock(&gus->reg_lock);
275         if (pcmp == NULL)
276                 return;
277         /* are we active? */
278         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
279                 return;
280         /* load real volume - better precision */
281         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
282         if (pcmp->substream == NULL)
283                 return;
284         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
285         spin_lock(&gus->reg_lock);
286         snd_gf1_select_voice(gus, pvoice->number);
287         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
288         pcmp->final_volume = 1;
289         spin_unlock(&gus->reg_lock);
290 }
291
292 static void snd_gf1_pcm_volume_change(snd_gus_card_t * gus)
293 {
294 }
295
296 static int snd_gf1_pcm_poke_block(snd_gus_card_t *gus, unsigned char *buf,
297                                   unsigned int pos, unsigned int count,
298                                   int w16, int invert)
299 {
300         unsigned int len;
301         unsigned long flags;
302
303         // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
304         while (count > 0) {
305                 len = count;
306                 if (len > 512)          /* limit, to allow IRQ */
307                         len = 512;
308                 count -= len;
309                 if (gus->interwave) {
310                         spin_lock_irqsave(&gus->reg_lock, flags);
311                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
312                         snd_gf1_dram_addr(gus, pos);
313                         if (w16) {
314                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
315                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
316                         } else {
317                                 outsb(GUSP(gus, DRAM), buf, len);
318                         }
319                         spin_unlock_irqrestore(&gus->reg_lock, flags);
320                         buf += 512;
321                         pos += 512;
322                 } else {
323                         invert = invert ? 0x80 : 0x00;
324                         if (w16) {
325                                 len >>= 1;
326                                 while (len--) {
327                                         snd_gf1_poke(gus, pos++, *buf++);
328                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
329                                 }
330                         } else {
331                                 while (len--)
332                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
333                         }
334                 }
335                 if (count > 0 && !in_interrupt()) {
336                         schedule_timeout_interruptible(1);
337                         if (signal_pending(current))
338                                 return -EAGAIN;
339                 }
340         }
341         return 0;
342 }
343
344 static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
345                                      int voice,
346                                      snd_pcm_uframes_t pos,
347                                      void __user *src,
348                                      snd_pcm_uframes_t count)
349 {
350         snd_pcm_runtime_t *runtime = substream->runtime;
351         gus_pcm_private_t *pcmp = runtime->private_data;
352         unsigned int bpos, len;
353         
354         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
355         len = samples_to_bytes(runtime, count);
356         snd_assert(bpos <= pcmp->dma_size, return -EIO);
357         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
358         if (copy_from_user(runtime->dma_area + bpos, src, len))
359                 return -EFAULT;
360         if (snd_gf1_pcm_use_dma && len > 32) {
361                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
362         } else {
363                 snd_gus_card_t *gus = pcmp->gus;
364                 int err, w16, invert;
365
366                 w16 = (snd_pcm_format_width(runtime->format) == 16);
367                 invert = snd_pcm_format_unsigned(runtime->format);
368                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
369                         return err;
370         }
371         return 0;
372 }
373
374 static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream,
375                                         int voice,
376                                         snd_pcm_uframes_t pos,
377                                         snd_pcm_uframes_t count)
378 {
379         snd_pcm_runtime_t *runtime = substream->runtime;
380         gus_pcm_private_t *pcmp = runtime->private_data;
381         unsigned int bpos, len;
382         
383         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
384         len = samples_to_bytes(runtime, count);
385         snd_assert(bpos <= pcmp->dma_size, return -EIO);
386         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
387         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
388         if (snd_gf1_pcm_use_dma && len > 32) {
389                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
390         } else {
391                 snd_gus_card_t *gus = pcmp->gus;
392                 int err, w16, invert;
393
394                 w16 = (snd_pcm_format_width(runtime->format) == 16);
395                 invert = snd_pcm_format_unsigned(runtime->format);
396                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
397                         return err;
398         }
399         return 0;
400 }
401
402 static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream,
403                                           snd_pcm_hw_params_t * hw_params)
404 {
405         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
406         snd_pcm_runtime_t *runtime = substream->runtime;
407         gus_pcm_private_t *pcmp = runtime->private_data;
408         int err;
409         
410         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
411                 return err;
412         if (err > 0) {  /* change */
413                 snd_gf1_mem_block_t *block;
414                 if (pcmp->memory > 0) {
415                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
416                         pcmp->memory = 0;
417                 }
418                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
419                                                SNDRV_GF1_MEM_OWNER_DRIVER,
420                                                "GF1 PCM",
421                                                runtime->dma_bytes, 1, 32,
422                                                NULL)) == NULL)
423                         return -ENOMEM;
424                 pcmp->memory = block->ptr;
425         }
426         pcmp->voices = params_channels(hw_params);
427         if (pcmp->pvoices[0] == NULL) {
428                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
429                         return -ENOMEM;
430                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
431                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
432                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
433                 pcmp->pvoices[0]->private_data = pcmp;
434         }
435         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
436                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
437                         return -ENOMEM;
438                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
439                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
440                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
441                 pcmp->pvoices[1]->private_data = pcmp;
442         } else if (pcmp->voices == 1) {
443                 if (pcmp->pvoices[1]) {
444                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
445                         pcmp->pvoices[1] = NULL;
446                 }
447         }
448         return 0;
449 }
450
451 static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream)
452 {
453         snd_pcm_runtime_t *runtime = substream->runtime;
454         gus_pcm_private_t *pcmp = runtime->private_data;
455
456         snd_pcm_lib_free_pages(substream);
457         if (pcmp->pvoices[0]) {
458                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
459                 pcmp->pvoices[0] = NULL;
460         }
461         if (pcmp->pvoices[1]) {
462                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
463                 pcmp->pvoices[1] = NULL;
464         }
465         if (pcmp->memory > 0) {
466                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
467                 pcmp->memory = 0;
468         }
469         return 0;
470 }
471
472 static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream)
473 {
474         snd_pcm_runtime_t *runtime = substream->runtime;
475         gus_pcm_private_t *pcmp = runtime->private_data;
476
477         pcmp->bpos = 0;
478         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
479         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
480         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
481         return 0;
482 }
483
484 static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream,
485                                         int cmd)
486 {
487         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
488         snd_pcm_runtime_t *runtime = substream->runtime;
489         gus_pcm_private_t *pcmp = runtime->private_data;
490         int voice;
491
492         if (cmd == SNDRV_PCM_TRIGGER_START) {
493                 snd_gf1_pcm_trigger_up(substream);
494         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
495                 spin_lock(&pcmp->lock);
496                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
497                 spin_unlock(&pcmp->lock);
498                 voice = pcmp->pvoices[0]->number;
499                 snd_gf1_stop_voices(gus, voice, voice);
500                 if (pcmp->pvoices[1]) {
501                         voice = pcmp->pvoices[1]->number;
502                         snd_gf1_stop_voices(gus, voice, voice);
503                 }
504         } else {
505                 return -EINVAL;
506         }
507         return 0;
508 }
509
510 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream)
511 {
512         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
513         snd_pcm_runtime_t *runtime = substream->runtime;
514         gus_pcm_private_t *pcmp = runtime->private_data;
515         unsigned int pos;
516         unsigned char voice_ctrl;
517
518         pos = 0;
519         spin_lock(&gus->reg_lock);
520         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
521                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
522                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
523                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
524                 if (substream->runtime->channels > 1)
525                         pos <<= 1;
526                 pos = bytes_to_frames(runtime, pos);
527         }
528         spin_unlock(&gus->reg_lock);
529         return pos;
530 }
531
532 static ratnum_t clock = {
533         .num = 9878400/16,
534         .den_min = 2,
535         .den_max = 257,
536         .den_step = 1,
537 };
538
539 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
540         .nrats = 1,
541         .rats = &clock,
542 };
543
544 static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
545                                          snd_pcm_hw_params_t * hw_params)
546 {
547         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
548
549         gus->c_dma_size = params_buffer_bytes(hw_params);
550         gus->c_period_size = params_period_bytes(hw_params);
551         gus->c_pos = 0;
552         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
553         if (params_channels(hw_params) > 1)
554                 gus->gf1.pcm_rcntrl_reg |= 2;
555         if (gus->gf1.dma2 > 3)
556                 gus->gf1.pcm_rcntrl_reg |= 4;
557         if (snd_pcm_format_unsigned(params_format(hw_params)))
558                 gus->gf1.pcm_rcntrl_reg |= 0x80;
559         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
560 }
561
562 static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream)
563 {
564         return snd_pcm_lib_free_pages(substream);
565 }
566
567 static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
568 {
569         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
570         snd_pcm_runtime_t *runtime = substream->runtime;
571
572         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
573         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
574         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
575         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
576         return 0;
577 }
578
579 static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream,
580                                        int cmd)
581 {
582         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
583         int val;
584         
585         if (cmd == SNDRV_PCM_TRIGGER_START) {
586                 val = gus->gf1.pcm_rcntrl_reg;
587         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
588                 val = 0;
589         } else {
590                 return -EINVAL;
591         }
592
593         spin_lock(&gus->reg_lock);
594         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
595         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
596         spin_unlock(&gus->reg_lock);
597         return 0;
598 }
599
600 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream)
601 {
602         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
603         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
604         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
605         return pos;
606 }
607
608 static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus)
609 {
610         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
611         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
612         if (gus->pcm_cap_substream != NULL) {
613                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 
614                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
615                 gus->c_pos += gus->c_period_size;
616                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
617         }
618 }
619
620 static snd_pcm_hardware_t snd_gf1_pcm_playback =
621 {
622         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
623         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
624                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
625         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
626         .rate_min =             5510,
627         .rate_max =             48000,
628         .channels_min =         1,
629         .channels_max =         2,
630         .buffer_bytes_max =     (128*1024),
631         .period_bytes_min =     64,
632         .period_bytes_max =     (128*1024),
633         .periods_min =          1,
634         .periods_max =          1024,
635         .fifo_size =            0,
636 };
637
638 static snd_pcm_hardware_t snd_gf1_pcm_capture =
639 {
640         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
641                                  SNDRV_PCM_INFO_MMAP_VALID),
642         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
643         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
644         .rate_min =             5510,
645         .rate_max =             44100,
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 void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime)
657 {
658         kfree(runtime->private_data);
659 }
660
661 static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
662 {
663         gus_pcm_private_t *pcmp;
664         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
665         snd_pcm_runtime_t *runtime = substream->runtime;
666         int err;
667
668         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
669         if (pcmp == NULL)
670                 return -ENOMEM;
671         pcmp->gus = gus;
672         spin_lock_init(&pcmp->lock);
673         init_waitqueue_head(&pcmp->sleep);
674         atomic_set(&pcmp->dma_count, 0);
675
676         runtime->private_data = pcmp;
677         runtime->private_free = snd_gf1_pcm_playback_free;
678
679 #if 0
680         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
681 #endif
682         if ((err = snd_gf1_dma_init(gus)) < 0)
683                 return err;
684         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
685         pcmp->substream = substream;
686         runtime->hw = snd_gf1_pcm_playback;
687         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
688         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
689         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
690         return 0;
691 }
692
693 static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
694 {
695         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
696         snd_pcm_runtime_t *runtime = substream->runtime;
697         gus_pcm_private_t *pcmp = runtime->private_data;
698         
699         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
700                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
701
702         snd_gf1_dma_done(gus);  
703         return 0;
704 }
705
706 static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
707 {
708         snd_pcm_runtime_t *runtime = substream->runtime;
709         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
710
711         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
712         gus->pcm_cap_substream = substream;
713         substream->runtime->hw = snd_gf1_pcm_capture;
714         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
715         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
716         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
717                                       &hw_constraints_clocks);
718         return 0;
719 }
720
721 static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
722 {
723         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
724
725         gus->pcm_cap_substream = NULL;
726         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
727         return 0;
728 }
729
730 static void snd_gf1_pcm_free(snd_pcm_t *pcm)
731 {
732         snd_gus_card_t *gus = pcm->private_data;
733         gus->pcm = NULL;
734         snd_pcm_lib_preallocate_free_for_all(pcm);
735 }
736
737 static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
738 {
739         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
740         uinfo->count = 2;
741         uinfo->value.integer.min = 0;
742         uinfo->value.integer.max = 127;
743         return 0;
744 }
745
746 static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
747 {
748         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
749         unsigned long flags;
750         
751         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
752         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
753         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
754         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
755         return 0;
756 }
757
758 static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
759 {
760         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
761         unsigned long flags;
762         int change;
763         unsigned int idx;
764         unsigned short val1, val2, vol;
765         gus_pcm_private_t *pcmp;
766         snd_gus_voice_t *pvoice;
767         
768         val1 = ucontrol->value.integer.value[0] & 127;
769         val2 = ucontrol->value.integer.value[1] & 127;
770         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
771         change = val1 != gus->gf1.pcm_volume_level_left1 ||
772                  val2 != gus->gf1.pcm_volume_level_right1;
773         gus->gf1.pcm_volume_level_left1 = val1;
774         gus->gf1.pcm_volume_level_right1 = val2;
775         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
776         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
777         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
778         /* are we active? */
779         spin_lock_irqsave(&gus->voice_alloc, flags);
780         for (idx = 0; idx < 32; idx++) {
781                 pvoice = &gus->gf1.voices[idx];
782                 if (!pvoice->pcm)
783                         continue;
784                 pcmp = pvoice->private_data;
785                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
786                         continue;
787                 /* load real volume - better precision */
788                 spin_lock_irqsave(&gus->reg_lock, flags);
789                 snd_gf1_select_voice(gus, pvoice->number);
790                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
791                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
792                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
793                 pcmp->final_volume = 1;
794                 spin_unlock_irqrestore(&gus->reg_lock, flags);
795         }
796         spin_unlock_irqrestore(&gus->voice_alloc, flags);
797         return change;
798 }
799
800 static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
801 {
802         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
803         .name = "PCM Playback Volume",
804         .info = snd_gf1_pcm_volume_info,
805         .get = snd_gf1_pcm_volume_get,
806         .put = snd_gf1_pcm_volume_put
807 };
808
809 static snd_kcontrol_new_t snd_gf1_pcm_volume_control1 =
810 {
811         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
812         .name = "GPCM Playback Volume",
813         .info = snd_gf1_pcm_volume_info,
814         .get = snd_gf1_pcm_volume_get,
815         .put = snd_gf1_pcm_volume_put
816 };
817
818 static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
819         .open =         snd_gf1_pcm_playback_open,
820         .close =        snd_gf1_pcm_playback_close,
821         .ioctl =        snd_pcm_lib_ioctl,
822         .hw_params =    snd_gf1_pcm_playback_hw_params,
823         .hw_free =      snd_gf1_pcm_playback_hw_free,
824         .prepare =      snd_gf1_pcm_playback_prepare,
825         .trigger =      snd_gf1_pcm_playback_trigger,
826         .pointer =      snd_gf1_pcm_playback_pointer,
827         .copy =         snd_gf1_pcm_playback_copy,
828         .silence =      snd_gf1_pcm_playback_silence,
829 };
830
831 static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
832         .open =         snd_gf1_pcm_capture_open,
833         .close =        snd_gf1_pcm_capture_close,
834         .ioctl =        snd_pcm_lib_ioctl,
835         .hw_params =    snd_gf1_pcm_capture_hw_params,
836         .hw_free =      snd_gf1_pcm_capture_hw_free,
837         .prepare =      snd_gf1_pcm_capture_prepare,
838         .trigger =      snd_gf1_pcm_capture_trigger,
839         .pointer =      snd_gf1_pcm_capture_pointer,
840 };
841
842 int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
843 {
844         snd_card_t *card;
845         snd_kcontrol_t *kctl;
846         snd_pcm_t *pcm;
847         snd_pcm_substream_t *substream;
848         int capture, err;
849
850         if (rpcm)
851                 *rpcm = NULL;
852         card = gus->card;
853         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
854         err = snd_pcm_new(card,
855                           gus->interwave ? "AMD InterWave" : "GF1",
856                           pcm_dev,
857                           gus->gf1.pcm_channels / 2,
858                           capture,
859                           &pcm);
860         if (err < 0)
861                 return err;
862         pcm->private_data = gus;
863         pcm->private_free = snd_gf1_pcm_free;
864         /* playback setup */
865         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
866
867         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
868                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
869                                               snd_dma_isa_data(),
870                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
871         
872         pcm->info_flags = 0;
873         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
874         if (capture) {
875                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
876                 if (gus->gf1.dma2 == gus->gf1.dma1)
877                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
878                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
879                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
880                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
881         }
882         strcpy(pcm->name, pcm->id);
883         if (gus->interwave) {
884                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
885         }
886         strcat(pcm->name, " (synth)");
887         gus->pcm = pcm;
888
889         if (gus->codec_flag)
890                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
891         else
892                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
893         if ((err = snd_ctl_add(card, kctl)) < 0)
894                 return err;
895         kctl->id.index = control_index;
896
897         if (rpcm)
898                 *rpcm = pcm;
899         return 0;
900 }
901