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Linux 2.6.28.1
[linux/fpc-iii.git] / sound / isa / gus / gus_pcm.c
blob38510aeb21c64893a988a900224bd7420b037ff2
1 /*
2 * Copyright (c) by Jaroslav Kysela <perex@perex.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 <asm/dma.h>
29 #include <linux/slab.h>
30 #include <sound/core.h>
31 #include <sound/control.h>
32 #include <sound/gus.h>
33 #include <sound/pcm_params.h>
34 #include "gus_tables.h"
35
36 /* maximum rate */
37
38 #define SNDRV_GF1_PCM_RATE 48000
39
40 #define SNDRV_GF1_PCM_PFLG_NONE 0
41 #define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0)
42 #define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0)
43
44 struct gus_pcm_private {
45 struct snd_gus_card * gus;
46 struct snd_pcm_substream *substream;
47 spinlock_t lock;
48 unsigned int voices;
49 struct snd_gus_voice *pvoices[2];
50 unsigned int memory;
51 unsigned short flags;
52 unsigned char voice_ctrl, ramp_ctrl;
53 unsigned int bpos;
54 unsigned int blocks;
55 unsigned int block_size;
56 unsigned int dma_size;
57 wait_queue_head_t sleep;
58 atomic_t dma_count;
59 int final_volume;
60 };
61
62 static int snd_gf1_pcm_use_dma = 1;
63
64 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
65 {
66 struct gus_pcm_private *pcmp = private_data;
67
68 if (pcmp) {
69 atomic_dec(&pcmp->dma_count);
70 wake_up(&pcmp->sleep);
71 }
72 }
73
74 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
75 unsigned int offset,
76 unsigned int addr,
77 unsigned int count)
78 {
79 struct snd_gf1_dma_block block;
80 struct snd_pcm_runtime *runtime = substream->runtime;
81 struct gus_pcm_private *pcmp = runtime->private_data;
82
83 count += offset & 31;
84 offset &= ~31;
85 // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
86 memset(&block, 0, sizeof(block));
87 block.cmd = SNDRV_GF1_DMA_IRQ;
88 if (snd_pcm_format_unsigned(runtime->format))
89 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
90 if (snd_pcm_format_width(runtime->format) == 16)
91 block.cmd |= SNDRV_GF1_DMA_16BIT;
92 block.addr = addr & ~31;
93 block.buffer = runtime->dma_area + offset;
94 block.buf_addr = runtime->dma_addr + offset;
95 block.count = count;
96 block.private_data = pcmp;
97 block.ack = snd_gf1_pcm_block_change_ack;
98 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
99 atomic_inc(&pcmp->dma_count);
100 return 0;
101 }
102
103 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
104 {
105 struct snd_pcm_runtime *runtime = substream->runtime;
106 struct gus_pcm_private *pcmp = runtime->private_data;
107 struct snd_gus_card * gus = pcmp->gus;
108 unsigned long flags;
109 unsigned char voice_ctrl, ramp_ctrl;
110 unsigned short rate;
111 unsigned int curr, begin, end;
112 unsigned short vol;
113 unsigned char pan;
114 unsigned int voice;
115
116 spin_lock_irqsave(&pcmp->lock, flags);
117 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
118 spin_unlock_irqrestore(&pcmp->lock, flags);
119 return;
120 }
121 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
122 pcmp->final_volume = 0;
123 spin_unlock_irqrestore(&pcmp->lock, flags);
124 rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
125 /* enable WAVE IRQ */
126 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
127 /* enable RAMP IRQ + rollover */
128 ramp_ctrl = 0x24;
129 if (pcmp->blocks == 1) {
130 voice_ctrl |= 0x08; /* loop enable */
131 ramp_ctrl &= ~0x04; /* disable rollover */
132 }
133 for (voice = 0; voice < pcmp->voices; voice++) {
134 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
135 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
136 end = curr + (pcmp->block_size / runtime->channels);
137 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
138 // 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);
139 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
140 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
141 spin_lock_irqsave(&gus->reg_lock, flags);
142 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
143 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
144 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
145 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
146 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
147 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
148 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
149 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
150 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
151 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
152 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
153 if (!gus->gf1.enh_mode) {
154 snd_gf1_delay(gus);
155 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
156 }
157 spin_unlock_irqrestore(&gus->reg_lock, flags);
158 }
159 spin_lock_irqsave(&gus->reg_lock, flags);
160 for (voice = 0; voice < pcmp->voices; voice++) {
161 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
162 if (gus->gf1.enh_mode)
163 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
164 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
165 voice_ctrl &= ~0x20;
166 }
167 voice_ctrl |= 0x20;
168 if (!gus->gf1.enh_mode) {
169 snd_gf1_delay(gus);
170 for (voice = 0; voice < pcmp->voices; voice++) {
171 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
172 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
173 voice_ctrl &= ~0x20; /* disable IRQ for next voice */
174 }
175 }
176 spin_unlock_irqrestore(&gus->reg_lock, flags);
177 }
178
179 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
180 struct snd_gus_voice *pvoice)
181 {
182 struct gus_pcm_private * pcmp;
183 struct snd_pcm_runtime *runtime;
184 unsigned char voice_ctrl, ramp_ctrl;
185 unsigned int idx;
186 unsigned int end, step;
187
188 if (!pvoice->private_data) {
189 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
190 snd_gf1_smart_stop_voice(gus, pvoice->number);
191 return;
192 }
193 pcmp = pvoice->private_data;
194 if (pcmp == NULL) {
195 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
196 snd_gf1_smart_stop_voice(gus, pvoice->number);
197 return;
198 }
199 gus = pcmp->gus;
200 runtime = pcmp->substream->runtime;
201
202 spin_lock(&gus->reg_lock);
203 snd_gf1_select_voice(gus, pvoice->number);
204 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
205 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
206 #if 0
207 snd_gf1_select_voice(gus, pvoice->number);
208 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
209 snd_gf1_select_voice(gus, pcmp->pvoices[1]->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, pvoice->number);
212 #endif
213 pcmp->bpos++;
214 pcmp->bpos %= pcmp->blocks;
215 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
216 voice_ctrl |= 0x08; /* enable loop */
217 } else {
218 ramp_ctrl |= 0x04; /* enable rollover */
219 }
220 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
221 end -= voice_ctrl & 4 ? 2 : 1;
222 step = pcmp->dma_size / runtime->channels;
223 voice_ctrl |= 0x20;
224 if (!pcmp->final_volume) {
225 ramp_ctrl |= 0x20;
226 ramp_ctrl &= ~0x03;
227 }
228 for (idx = 0; idx < pcmp->voices; idx++, end += step) {
229 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
230 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
231 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
232 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
233 voice_ctrl &= ~0x20;
234 }
235 if (!gus->gf1.enh_mode) {
236 snd_gf1_delay(gus);
237 voice_ctrl |= 0x20;
238 for (idx = 0; idx < pcmp->voices; idx++) {
239 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
240 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
241 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
242 voice_ctrl &= ~0x20;
243 }
244 }
245 spin_unlock(&gus->reg_lock);
246
247 snd_pcm_period_elapsed(pcmp->substream);
248 #if 0
249 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
250 *runtime->state == SNDRV_PCM_STATE_RUNNING) {
251 end = pcmp->bpos * pcmp->block_size;
252 if (runtime->channels > 1) {
253 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
254 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
255 } else {
256 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
257 }
258 }
259 #endif
260 }
261
262 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
263 struct snd_gus_voice * pvoice)
264 {
265 unsigned short vol;
266 int cvoice;
267 struct gus_pcm_private *pcmp = pvoice->private_data;
268
269 /* stop ramp, but leave rollover bit untouched */
270 spin_lock(&gus->reg_lock);
271 snd_gf1_select_voice(gus, pvoice->number);
272 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
273 spin_unlock(&gus->reg_lock);
274 if (pcmp == NULL)
275 return;
276 /* are we active? */
277 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
278 return;
279 /* load real volume - better precision */
280 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
281 if (pcmp->substream == NULL)
282 return;
283 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
284 spin_lock(&gus->reg_lock);
285 snd_gf1_select_voice(gus, pvoice->number);
286 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
287 pcmp->final_volume = 1;
288 spin_unlock(&gus->reg_lock);
289 }
290
291 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
292 {
293 }
294
295 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
296 unsigned int pos, unsigned int count,
297 int w16, int invert)
298 {
299 unsigned int len;
300 unsigned long flags;
301
302 // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
303 while (count > 0) {
304 len = count;
305 if (len > 512) /* limit, to allow IRQ */
306 len = 512;
307 count -= len;
308 if (gus->interwave) {
309 spin_lock_irqsave(&gus->reg_lock, flags);
310 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
311 snd_gf1_dram_addr(gus, pos);
312 if (w16) {
313 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
314 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
315 } else {
316 outsb(GUSP(gus, DRAM), buf, len);
317 }
318 spin_unlock_irqrestore(&gus->reg_lock, flags);
319 buf += 512;
320 pos += 512;
321 } else {
322 invert = invert ? 0x80 : 0x00;
323 if (w16) {
324 len >>= 1;
325 while (len--) {
326 snd_gf1_poke(gus, pos++, *buf++);
327 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
328 }
329 } else {
330 while (len--)
331 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
332 }
333 }
334 if (count > 0 && !in_interrupt()) {
335 schedule_timeout_interruptible(1);
336 if (signal_pending(current))
337 return -EAGAIN;
338 }
339 }
340 return 0;
341 }
342
343 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
344 int voice,
345 snd_pcm_uframes_t pos,
346 void __user *src,
347 snd_pcm_uframes_t count)
348 {
349 struct snd_pcm_runtime *runtime = substream->runtime;
350 struct gus_pcm_private *pcmp = runtime->private_data;
351 unsigned int bpos, len;
352
353 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
354 len = samples_to_bytes(runtime, count);
355 if (snd_BUG_ON(bpos > pcmp->dma_size))
356 return -EIO;
357 if (snd_BUG_ON(bpos + len > pcmp->dma_size))
358 return -EIO;
359 if (copy_from_user(runtime->dma_area + bpos, src, len))
360 return -EFAULT;
361 if (snd_gf1_pcm_use_dma && len > 32) {
362 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
363 } else {
364 struct snd_gus_card *gus = pcmp->gus;
365 int err, w16, invert;
366
367 w16 = (snd_pcm_format_width(runtime->format) == 16);
368 invert = snd_pcm_format_unsigned(runtime->format);
369 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
370 return err;
371 }
372 return 0;
373 }
374
375 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
376 int voice,
377 snd_pcm_uframes_t pos,
378 snd_pcm_uframes_t count)
379 {
380 struct snd_pcm_runtime *runtime = substream->runtime;
381 struct gus_pcm_private *pcmp = runtime->private_data;
382 unsigned int bpos, len;
383
384 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
385 len = samples_to_bytes(runtime, count);
386 if (snd_BUG_ON(bpos > pcmp->dma_size))
387 return -EIO;
388 if (snd_BUG_ON(bpos + len > pcmp->dma_size))
389 return -EIO;
390 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
391 if (snd_gf1_pcm_use_dma && len > 32) {
392 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
393 } else {
394 struct snd_gus_card *gus = pcmp->gus;
395 int err, w16, invert;
396
397 w16 = (snd_pcm_format_width(runtime->format) == 16);
398 invert = snd_pcm_format_unsigned(runtime->format);
399 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
400 return err;
401 }
402 return 0;
403 }
404
405 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
406 struct snd_pcm_hw_params *hw_params)
407 {
408 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
409 struct snd_pcm_runtime *runtime = substream->runtime;
410 struct gus_pcm_private *pcmp = runtime->private_data;
411 int err;
412
413 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
414 return err;
415 if (err > 0) { /* change */
416 struct snd_gf1_mem_block *block;
417 if (pcmp->memory > 0) {
418 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
419 pcmp->memory = 0;
420 }
421 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
422 SNDRV_GF1_MEM_OWNER_DRIVER,
423 "GF1 PCM",
424 runtime->dma_bytes, 1, 32,
425 NULL)) == NULL)
426 return -ENOMEM;
427 pcmp->memory = block->ptr;
428 }
429 pcmp->voices = params_channels(hw_params);
430 if (pcmp->pvoices[0] == NULL) {
431 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
432 return -ENOMEM;
433 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
434 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
435 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
436 pcmp->pvoices[0]->private_data = pcmp;
437 }
438 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
439 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
440 return -ENOMEM;
441 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
442 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
443 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
444 pcmp->pvoices[1]->private_data = pcmp;
445 } else if (pcmp->voices == 1) {
446 if (pcmp->pvoices[1]) {
447 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
448 pcmp->pvoices[1] = NULL;
449 }
450 }
451 return 0;
452 }
453
454 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
455 {
456 struct snd_pcm_runtime *runtime = substream->runtime;
457 struct gus_pcm_private *pcmp = runtime->private_data;
458
459 snd_pcm_lib_free_pages(substream);
460 if (pcmp->pvoices[0]) {
461 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
462 pcmp->pvoices[0] = NULL;
463 }
464 if (pcmp->pvoices[1]) {
465 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
466 pcmp->pvoices[1] = NULL;
467 }
468 if (pcmp->memory > 0) {
469 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
470 pcmp->memory = 0;
471 }
472 return 0;
473 }
474
475 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
476 {
477 struct snd_pcm_runtime *runtime = substream->runtime;
478 struct gus_pcm_private *pcmp = runtime->private_data;
479
480 pcmp->bpos = 0;
481 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
482 pcmp->block_size = snd_pcm_lib_period_bytes(substream);
483 pcmp->blocks = pcmp->dma_size / pcmp->block_size;
484 return 0;
485 }
486
487 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
488 int cmd)
489 {
490 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
491 struct snd_pcm_runtime *runtime = substream->runtime;
492 struct gus_pcm_private *pcmp = runtime->private_data;
493 int voice;
494
495 if (cmd == SNDRV_PCM_TRIGGER_START) {
496 snd_gf1_pcm_trigger_up(substream);
497 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
498 spin_lock(&pcmp->lock);
499 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
500 spin_unlock(&pcmp->lock);
501 voice = pcmp->pvoices[0]->number;
502 snd_gf1_stop_voices(gus, voice, voice);
503 if (pcmp->pvoices[1]) {
504 voice = pcmp->pvoices[1]->number;
505 snd_gf1_stop_voices(gus, voice, voice);
506 }
507 } else {
508 return -EINVAL;
509 }
510 return 0;
511 }
512
513 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
514 {
515 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
516 struct snd_pcm_runtime *runtime = substream->runtime;
517 struct gus_pcm_private *pcmp = runtime->private_data;
518 unsigned int pos;
519 unsigned char voice_ctrl;
520
521 pos = 0;
522 spin_lock(&gus->reg_lock);
523 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
524 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
525 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
526 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
527 if (substream->runtime->channels > 1)
528 pos <<= 1;
529 pos = bytes_to_frames(runtime, pos);
530 }
531 spin_unlock(&gus->reg_lock);
532 return pos;
533 }
534
535 static struct snd_ratnum clock = {
536 .num = 9878400/16,
537 .den_min = 2,
538 .den_max = 257,
539 .den_step = 1,
540 };
541
542 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
543 .nrats = 1,
544 .rats = &clock,
545 };
546
547 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
548 struct snd_pcm_hw_params *hw_params)
549 {
550 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
551
552 gus->c_dma_size = params_buffer_bytes(hw_params);
553 gus->c_period_size = params_period_bytes(hw_params);
554 gus->c_pos = 0;
555 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
556 if (params_channels(hw_params) > 1)
557 gus->gf1.pcm_rcntrl_reg |= 2;
558 if (gus->gf1.dma2 > 3)
559 gus->gf1.pcm_rcntrl_reg |= 4;
560 if (snd_pcm_format_unsigned(params_format(hw_params)))
561 gus->gf1.pcm_rcntrl_reg |= 0x80;
562 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
563 }
564
565 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
566 {
567 return snd_pcm_lib_free_pages(substream);
568 }
569
570 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
571 {
572 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
573 struct snd_pcm_runtime *runtime = substream->runtime;
574
575 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
576 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
577 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
578 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
579 return 0;
580 }
581
582 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
583 int cmd)
584 {
585 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
586 int val;
587
588 if (cmd == SNDRV_PCM_TRIGGER_START) {
589 val = gus->gf1.pcm_rcntrl_reg;
590 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
591 val = 0;
592 } else {
593 return -EINVAL;
594 }
595
596 spin_lock(&gus->reg_lock);
597 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
598 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
599 spin_unlock(&gus->reg_lock);
600 return 0;
601 }
602
603 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
604 {
605 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
606 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
607 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
608 return pos;
609 }
610
611 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
612 {
613 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
614 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
615 if (gus->pcm_cap_substream != NULL) {
616 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
617 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
618 gus->c_pos += gus->c_period_size;
619 snd_pcm_period_elapsed(gus->pcm_cap_substream);
620 }
621 }
622
623 static struct snd_pcm_hardware snd_gf1_pcm_playback =
624 {
625 .info = SNDRV_PCM_INFO_NONINTERLEAVED,
626 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
627 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
628 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
629 .rate_min = 5510,
630 .rate_max = 48000,
631 .channels_min = 1,
632 .channels_max = 2,
633 .buffer_bytes_max = (128*1024),
634 .period_bytes_min = 64,
635 .period_bytes_max = (128*1024),
636 .periods_min = 1,
637 .periods_max = 1024,
638 .fifo_size = 0,
639 };
640
641 static struct snd_pcm_hardware snd_gf1_pcm_capture =
642 {
643 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
644 SNDRV_PCM_INFO_MMAP_VALID),
645 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
646 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
647 .rate_min = 5510,
648 .rate_max = 44100,
649 .channels_min = 1,
650 .channels_max = 2,
651 .buffer_bytes_max = (128*1024),
652 .period_bytes_min = 64,
653 .period_bytes_max = (128*1024),
654 .periods_min = 1,
655 .periods_max = 1024,
656 .fifo_size = 0,
657 };
658
659 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
660 {
661 kfree(runtime->private_data);
662 }
663
664 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
665 {
666 struct gus_pcm_private *pcmp;
667 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
668 struct snd_pcm_runtime *runtime = substream->runtime;
669 int err;
670
671 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
672 if (pcmp == NULL)
673 return -ENOMEM;
674 pcmp->gus = gus;
675 spin_lock_init(&pcmp->lock);
676 init_waitqueue_head(&pcmp->sleep);
677 atomic_set(&pcmp->dma_count, 0);
678
679 runtime->private_data = pcmp;
680 runtime->private_free = snd_gf1_pcm_playback_free;
681
682 #if 0
683 printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
684 #endif
685 if ((err = snd_gf1_dma_init(gus)) < 0)
686 return err;
687 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
688 pcmp->substream = substream;
689 runtime->hw = snd_gf1_pcm_playback;
690 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
691 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
692 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
693 return 0;
694 }
695
696 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
697 {
698 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
699 struct snd_pcm_runtime *runtime = substream->runtime;
700 struct gus_pcm_private *pcmp = runtime->private_data;
701
702 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
703 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
704
705 snd_gf1_dma_done(gus);
706 return 0;
707 }
708
709 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
710 {
711 struct snd_pcm_runtime *runtime = substream->runtime;
712 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
713
714 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
715 gus->pcm_cap_substream = substream;
716 substream->runtime->hw = snd_gf1_pcm_capture;
717 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
718 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
719 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
720 &hw_constraints_clocks);
721 return 0;
722 }
723
724 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
725 {
726 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
727
728 gus->pcm_cap_substream = NULL;
729 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
730 return 0;
731 }
732
733 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
734 {
735 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
736 uinfo->count = 2;
737 uinfo->value.integer.min = 0;
738 uinfo->value.integer.max = 127;
739 return 0;
740 }
741
742 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
743 {
744 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
745 unsigned long flags;
746
747 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
748 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
749 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
750 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
751 return 0;
752 }
753
754 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
755 {
756 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
757 unsigned long flags;
758 int change;
759 unsigned int idx;
760 unsigned short val1, val2, vol;
761 struct gus_pcm_private *pcmp;
762 struct snd_gus_voice *pvoice;
763
764 val1 = ucontrol->value.integer.value[0] & 127;
765 val2 = ucontrol->value.integer.value[1] & 127;
766 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
767 change = val1 != gus->gf1.pcm_volume_level_left1 ||
768 val2 != gus->gf1.pcm_volume_level_right1;
769 gus->gf1.pcm_volume_level_left1 = val1;
770 gus->gf1.pcm_volume_level_right1 = val2;
771 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
772 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
773 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
774 /* are we active? */
775 spin_lock_irqsave(&gus->voice_alloc, flags);
776 for (idx = 0; idx < 32; idx++) {
777 pvoice = &gus->gf1.voices[idx];
778 if (!pvoice->pcm)
779 continue;
780 pcmp = pvoice->private_data;
781 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
782 continue;
783 /* load real volume - better precision */
784 spin_lock_irqsave(&gus->reg_lock, flags);
785 snd_gf1_select_voice(gus, pvoice->number);
786 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
787 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
788 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
789 pcmp->final_volume = 1;
790 spin_unlock_irqrestore(&gus->reg_lock, flags);
791 }
792 spin_unlock_irqrestore(&gus->voice_alloc, flags);
793 return change;
794 }
795
796 static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
797 {
798 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
799 .name = "PCM Playback Volume",
800 .info = snd_gf1_pcm_volume_info,
801 .get = snd_gf1_pcm_volume_get,
802 .put = snd_gf1_pcm_volume_put
803 };
804
805 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
806 {
807 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
808 .name = "GPCM Playback Volume",
809 .info = snd_gf1_pcm_volume_info,
810 .get = snd_gf1_pcm_volume_get,
811 .put = snd_gf1_pcm_volume_put
812 };
813
814 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
815 .open = snd_gf1_pcm_playback_open,
816 .close = snd_gf1_pcm_playback_close,
817 .ioctl = snd_pcm_lib_ioctl,
818 .hw_params = snd_gf1_pcm_playback_hw_params,
819 .hw_free = snd_gf1_pcm_playback_hw_free,
820 .prepare = snd_gf1_pcm_playback_prepare,
821 .trigger = snd_gf1_pcm_playback_trigger,
822 .pointer = snd_gf1_pcm_playback_pointer,
823 .copy = snd_gf1_pcm_playback_copy,
824 .silence = snd_gf1_pcm_playback_silence,
825 };
826
827 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
828 .open = snd_gf1_pcm_capture_open,
829 .close = snd_gf1_pcm_capture_close,
830 .ioctl = snd_pcm_lib_ioctl,
831 .hw_params = snd_gf1_pcm_capture_hw_params,
832 .hw_free = snd_gf1_pcm_capture_hw_free,
833 .prepare = snd_gf1_pcm_capture_prepare,
834 .trigger = snd_gf1_pcm_capture_trigger,
835 .pointer = snd_gf1_pcm_capture_pointer,
836 };
837
838 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm)
839 {
840 struct snd_card *card;
841 struct snd_kcontrol *kctl;
842 struct snd_pcm *pcm;
843 struct snd_pcm_substream *substream;
844 int capture, err;
845
846 if (rpcm)
847 *rpcm = NULL;
848 card = gus->card;
849 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
850 err = snd_pcm_new(card,
851 gus->interwave ? "AMD InterWave" : "GF1",
852 pcm_dev,
853 gus->gf1.pcm_channels / 2,
854 capture,
855 &pcm);
856 if (err < 0)
857 return err;
858 pcm->private_data = gus;
859 /* playback setup */
860 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
861
862 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
863 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
864 snd_dma_isa_data(),
865 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
866
867 pcm->info_flags = 0;
868 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
869 if (capture) {
870 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
871 if (gus->gf1.dma2 == gus->gf1.dma1)
872 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
873 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
874 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
875 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
876 }
877 strcpy(pcm->name, pcm->id);
878 if (gus->interwave) {
879 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
880 }
881 strcat(pcm->name, " (synth)");
882 gus->pcm = pcm;
883
884 if (gus->codec_flag)
885 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
886 else
887 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
888 if ((err = snd_ctl_add(card, kctl)) < 0)
889 return err;
890 kctl->id.index = control_index;
891
892 if (rpcm)
893 *rpcm = pcm;
894 return 0;
895 }
896
Linux with added FPC-III support