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[ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
[deliverable/linux.git] / sound / isa / gus / gus_pcm.c
CommitLineData
1da177e4 1/*
c1017a4c 2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 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
5e2da206
TI		 45struct gus_pcm_private {
46 struct snd_gus_card * gus;
47 struct snd_pcm_substream *substream;
1da177e4
LT		 48 spinlock_t lock;
49 unsigned int voices;
5e2da206 50 struct snd_gus_voice *pvoices[2];
1da177e4
LT		 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;
5e2da206 61};
1da177e4
LT		 62
63static int snd_gf1_pcm_use_dma = 1;
64
5e2da206 65static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
1da177e4 66{
5e2da206 67 struct gus_pcm_private *pcmp = private_data;
1da177e4
LT		 68
69 if (pcmp) {
70 atomic_dec(&pcmp->dma_count);
71 wake_up(&pcmp->sleep);
72 }
73}
74
5e2da206 75static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
1da177e4
LT		 76 unsigned int offset,
77 unsigned int addr,
78 unsigned int count)
79{
5e2da206
TI		 80 struct snd_gf1_dma_block block;
81 struct snd_pcm_runtime *runtime = substream->runtime;
82 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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
5e2da206 104static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
1da177e4 105{
5e2da206
TI		 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;
1da177e4
LT		 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
1da177e4
LT		 117 spin_lock_irqsave(&pcmp->lock, flags);
118 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
119 spin_unlock_irqrestore(&pcmp->lock, flags);
120 return;
121 }
122 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
123 pcmp->final_volume = 0;
124 spin_unlock_irqrestore(&pcmp->lock, flags);
125 rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
126 /* enable WAVE IRQ */
127 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
128 /* enable RAMP IRQ + rollover */
129 ramp_ctrl = 0x24;
130 if (pcmp->blocks == 1) {
131 voice_ctrl |= 0x08; /* loop enable */
132 ramp_ctrl &= ~0x04; /* disable rollover */
133 }
134 for (voice = 0; voice < pcmp->voices; voice++) {
135 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
136 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
137 end = curr + (pcmp->block_size / runtime->channels);
138 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
139 // 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);
140 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
141 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
142 spin_lock_irqsave(&gus->reg_lock, flags);
143 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
144 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
145 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
146 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
147 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
148 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
149 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
150 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
151 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
152 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
153 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
154 if (!gus->gf1.enh_mode) {
155 snd_gf1_delay(gus);
156 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
157 }
158 spin_unlock_irqrestore(&gus->reg_lock, flags);
159 }
160 spin_lock_irqsave(&gus->reg_lock, flags);
161 for (voice = 0; voice < pcmp->voices; voice++) {
162 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
163 if (gus->gf1.enh_mode)
164 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
165 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
166 voice_ctrl &= ~0x20;
167 }
168 voice_ctrl |= 0x20;
169 if (!gus->gf1.enh_mode) {
170 snd_gf1_delay(gus);
171 for (voice = 0; voice < pcmp->voices; voice++) {
172 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
173 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
174 voice_ctrl &= ~0x20; /* disable IRQ for next voice */
175 }
176 }
177 spin_unlock_irqrestore(&gus->reg_lock, flags);
178}
179
5e2da206
TI		 180static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
181 struct snd_gus_voice *pvoice)
1da177e4 182{
5e2da206
TI		 183 struct gus_pcm_private * pcmp;
184 struct snd_pcm_runtime *runtime;
1da177e4
LT		 185 unsigned char voice_ctrl, ramp_ctrl;
186 unsigned int idx;
187 unsigned int end, step;
188
189 if (!pvoice->private_data) {
190 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
191 snd_gf1_smart_stop_voice(gus, pvoice->number);
192 return;
193 }
194 pcmp = pvoice->private_data;
195 if (pcmp == NULL) {
196 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
197 snd_gf1_smart_stop_voice(gus, pvoice->number);
198 return;
199 }
200 gus = pcmp->gus;
201 runtime = pcmp->substream->runtime;
202
203 spin_lock(&gus->reg_lock);
204 snd_gf1_select_voice(gus, pvoice->number);
205 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
206 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
207#if 0
208 snd_gf1_select_voice(gus, pvoice->number);
209 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
210 snd_gf1_select_voice(gus, pcmp->pvoices[1]->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, pvoice->number);
213#endif
214 pcmp->bpos++;
215 pcmp->bpos %= pcmp->blocks;
216 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
217 voice_ctrl |= 0x08; /* enable loop */
218 } else {
219 ramp_ctrl |= 0x04; /* enable rollover */
220 }
221 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
222 end -= voice_ctrl & 4 ? 2 : 1;
223 step = pcmp->dma_size / runtime->channels;
224 voice_ctrl |= 0x20;
225 if (!pcmp->final_volume) {
226 ramp_ctrl |= 0x20;
227 ramp_ctrl &= ~0x03;
228 }
229 for (idx = 0; idx < pcmp->voices; idx++, end += step) {
230 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
231 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
232 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
233 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
234 voice_ctrl &= ~0x20;
235 }
236 if (!gus->gf1.enh_mode) {
237 snd_gf1_delay(gus);
238 voice_ctrl |= 0x20;
239 for (idx = 0; idx < pcmp->voices; idx++) {
240 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
241 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
242 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
243 voice_ctrl &= ~0x20;
244 }
245 }
246 spin_unlock(&gus->reg_lock);
247
248 snd_pcm_period_elapsed(pcmp->substream);
249#if 0
250 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
251 *runtime->state == SNDRV_PCM_STATE_RUNNING) {
252 end = pcmp->bpos * pcmp->block_size;
253 if (runtime->channels > 1) {
254 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
255 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
256 } else {
257 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
258 }
259 }
260#endif
261}
262
5e2da206
TI		 263static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
264 struct snd_gus_voice * pvoice)
1da177e4
LT		 265{
266 unsigned short vol;
267 int cvoice;
5e2da206 268 struct gus_pcm_private *pcmp = pvoice->private_data;
1da177e4
LT		 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
5e2da206 292static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
1da177e4
LT		 293{
294}
295
5e2da206 296static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
1da177e4
LT		 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()) {
8433a509 336 schedule_timeout_interruptible(1);
1da177e4
LT		 337 if (signal_pending(current))
338 return -EAGAIN;
339 }
340 }
341 return 0;
342}
343
5e2da206 344static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
1da177e4
LT		 345 int voice,
346 snd_pcm_uframes_t pos,
347 void __user *src,
348 snd_pcm_uframes_t count)
349{
5e2da206
TI		 350 struct snd_pcm_runtime *runtime = substream->runtime;
351 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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 {
5e2da206 363 struct snd_gus_card *gus = pcmp->gus;
1da177e4
LT		 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
5e2da206 374static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
1da177e4
LT		 375 int voice,
376 snd_pcm_uframes_t pos,
377 snd_pcm_uframes_t count)
378{
5e2da206
TI		 379 struct snd_pcm_runtime *runtime = substream->runtime;
380 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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 {
5e2da206 391 struct snd_gus_card *gus = pcmp->gus;
1da177e4
LT		 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
5e2da206
TI		 402static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
403 struct snd_pcm_hw_params *hw_params)
1da177e4 404{
5e2da206
TI		 405 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
406 struct snd_pcm_runtime *runtime = substream->runtime;
407 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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 */
5e2da206 413 struct snd_gf1_mem_block *block;
1da177e4
LT		 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
5e2da206 451static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
1da177e4 452{
5e2da206
TI		 453 struct snd_pcm_runtime *runtime = substream->runtime;
454 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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
5e2da206 472static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
1da177e4 473{
5e2da206
TI		 474 struct snd_pcm_runtime *runtime = substream->runtime;
475 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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
5e2da206 484static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
1da177e4
LT		 485 int cmd)
486{
5e2da206
TI		 487 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
488 struct snd_pcm_runtime *runtime = substream->runtime;
489 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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
5e2da206 510static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
1da177e4 511{
5e2da206
TI		 512 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
513 struct snd_pcm_runtime *runtime = substream->runtime;
514 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 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
5e2da206 532static struct snd_ratnum clock = {
1da177e4
LT		 533 .num = 9878400/16,
534 .den_min = 2,
535 .den_max = 257,
536 .den_step = 1,
537};
538
5e2da206 539static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
1da177e4
LT		 540 .nrats = 1,
541 .rats = &clock,
542};
543
5e2da206
TI		 544static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
545 struct snd_pcm_hw_params *hw_params)
1da177e4 546{
5e2da206 547 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 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
5e2da206 562static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
1da177e4
LT		 563{
564 return snd_pcm_lib_free_pages(substream);
565}
566
5e2da206 567static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
1da177e4 568{
5e2da206
TI		 569 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
570 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 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
5e2da206 579static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
1da177e4
LT		 580 int cmd)
581{
5e2da206 582 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 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
5e2da206 600static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
1da177e4 601{
5e2da206 602 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 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
5e2da206 608static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
1da177e4
LT		 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
5e2da206 620static struct snd_pcm_hardware snd_gf1_pcm_playback =
1da177e4
LT		 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
5e2da206 638static struct snd_pcm_hardware snd_gf1_pcm_capture =
1da177e4
LT		 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
5e2da206 656static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
1da177e4 657{
4d572776 658 kfree(runtime->private_data);
1da177e4
LT		 659}
660
5e2da206 661static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
1da177e4 662{
5e2da206
TI		 663 struct gus_pcm_private *pcmp;
664 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
665 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 666 int err;
667
9e76a76e 668 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
1da177e4
LT		 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
5e2da206 693static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
1da177e4 694{
5e2da206
TI		 695 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
696 struct snd_pcm_runtime *runtime = substream->runtime;
697 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 698
699 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
99b359ba 700 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
1da177e4
LT		 701
702 snd_gf1_dma_done(gus);
703 return 0;
704}
705
5e2da206 706static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
1da177e4 707{
5e2da206
TI		 708 struct snd_pcm_runtime *runtime = substream->runtime;
709 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 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
5e2da206 721static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
1da177e4 722{
5e2da206 723 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 724
725 gus->pcm_cap_substream = NULL;
726 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
727 return 0;
728}
729
5e2da206 730static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 731{
732 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
733 uinfo->count = 2;
734 uinfo->value.integer.min = 0;
735 uinfo->value.integer.max = 127;
736 return 0;
737}
738
5e2da206 739static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 740{
5e2da206 741 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 742 unsigned long flags;
743
744 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
745 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
746 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
747 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
748 return 0;
749}
750
5e2da206 751static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 752{
5e2da206 753 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 754 unsigned long flags;
755 int change;
756 unsigned int idx;
757 unsigned short val1, val2, vol;
5e2da206
TI		 758 struct gus_pcm_private *pcmp;
759 struct snd_gus_voice *pvoice;
1da177e4
LT		 760
761 val1 = ucontrol->value.integer.value[0] & 127;
762 val2 = ucontrol->value.integer.value[1] & 127;
763 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
764 change = val1 != gus->gf1.pcm_volume_level_left1 ||
765 val2 != gus->gf1.pcm_volume_level_right1;
766 gus->gf1.pcm_volume_level_left1 = val1;
767 gus->gf1.pcm_volume_level_right1 = val2;
768 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
769 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
770 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
771 /* are we active? */
772 spin_lock_irqsave(&gus->voice_alloc, flags);
773 for (idx = 0; idx < 32; idx++) {
774 pvoice = &gus->gf1.voices[idx];
775 if (!pvoice->pcm)
776 continue;
777 pcmp = pvoice->private_data;
778 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
779 continue;
780 /* load real volume - better precision */
781 spin_lock_irqsave(&gus->reg_lock, flags);
782 snd_gf1_select_voice(gus, pvoice->number);
783 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
784 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
785 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
786 pcmp->final_volume = 1;
787 spin_unlock_irqrestore(&gus->reg_lock, flags);
788 }
789 spin_unlock_irqrestore(&gus->voice_alloc, flags);
790 return change;
791}
792
5e2da206 793static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
1da177e4
LT		 794{
795 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
796 .name = "PCM Playback Volume",
797 .info = snd_gf1_pcm_volume_info,
798 .get = snd_gf1_pcm_volume_get,
799 .put = snd_gf1_pcm_volume_put
800};
801
5e2da206 802static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
1da177e4
LT		 803{
804 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
805 .name = "GPCM Playback Volume",
806 .info = snd_gf1_pcm_volume_info,
807 .get = snd_gf1_pcm_volume_get,
808 .put = snd_gf1_pcm_volume_put
809};
810
5e2da206 811static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
1da177e4
LT		 812 .open = snd_gf1_pcm_playback_open,
813 .close = snd_gf1_pcm_playback_close,
814 .ioctl = snd_pcm_lib_ioctl,
815 .hw_params = snd_gf1_pcm_playback_hw_params,
816 .hw_free = snd_gf1_pcm_playback_hw_free,
817 .prepare = snd_gf1_pcm_playback_prepare,
818 .trigger = snd_gf1_pcm_playback_trigger,
819 .pointer = snd_gf1_pcm_playback_pointer,
820 .copy = snd_gf1_pcm_playback_copy,
821 .silence = snd_gf1_pcm_playback_silence,
822};
823
5e2da206 824static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
1da177e4
LT		 825 .open = snd_gf1_pcm_capture_open,
826 .close = snd_gf1_pcm_capture_close,
827 .ioctl = snd_pcm_lib_ioctl,
828 .hw_params = snd_gf1_pcm_capture_hw_params,
829 .hw_free = snd_gf1_pcm_capture_hw_free,
830 .prepare = snd_gf1_pcm_capture_prepare,
831 .trigger = snd_gf1_pcm_capture_trigger,
832 .pointer = snd_gf1_pcm_capture_pointer,
833};
834
5e2da206 835int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm)
1da177e4 836{
5e2da206
TI		 837 struct snd_card *card;
838 struct snd_kcontrol *kctl;
839 struct snd_pcm *pcm;
840 struct snd_pcm_substream *substream;
1da177e4
LT		 841 int capture, err;
842
843 if (rpcm)
844 *rpcm = NULL;
845 card = gus->card;
846 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
847 err = snd_pcm_new(card,
848 gus->interwave ? "AMD InterWave" : "GF1",
849 pcm_dev,
850 gus->gf1.pcm_channels / 2,
851 capture,
852 &pcm);
853 if (err < 0)
854 return err;
855 pcm->private_data = gus;
1da177e4
LT		 856 /* playback setup */
857 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
858
859 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
860 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
861 snd_dma_isa_data(),
862 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
863
864 pcm->info_flags = 0;
865 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
866 if (capture) {
867 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
868 if (gus->gf1.dma2 == gus->gf1.dma1)
869 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
870 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
871 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
872 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
873 }
874 strcpy(pcm->name, pcm->id);
875 if (gus->interwave) {
876 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
877 }
878 strcat(pcm->name, " (synth)");
879 gus->pcm = pcm;
880
881 if (gus->codec_flag)
882 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
883 else
884 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
885 if ((err = snd_ctl_add(card, kctl)) < 0)
886 return err;
887 kctl->id.index = control_index;
888
889 if (rpcm)
890 *rpcm = pcm;
891 return 0;
892}
893
Linux kernel - Deliverables
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