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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/isa/gus/gus_pcm.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'sound/isa/gus/gus_pcm.c')
-rw-r--r--sound/isa/gus/gus_pcm.c903
1 files changed, 903 insertions, 0 deletions
diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
new file mode 100644
index 000000000000..8995ad9c516d
--- /dev/null
+++ b/sound/isa/gus/gus_pcm.c
@@ -0,0 +1,903 @@
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
45typedef 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
63static int snd_gf1_pcm_use_dma = 1;
64
65static 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
75static 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
104static 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
182static 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
264static 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
292static void snd_gf1_pcm_volume_change(snd_gus_card_t * gus)
293{
294}
295
296static 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 set_current_state(TASK_INTERRUPTIBLE);
337 schedule_timeout(1);
338 if (signal_pending(current))
339 return -EAGAIN;
340 }
341 }
342 return 0;
343}
344
345static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
346 int voice,
347 snd_pcm_uframes_t pos,
348 void __user *src,
349 snd_pcm_uframes_t count)
350{
351 snd_pcm_runtime_t *runtime = substream->runtime;
352 gus_pcm_private_t *pcmp = runtime->private_data;
353 unsigned int bpos, len;
354
355 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
356 len = samples_to_bytes(runtime, count);
357 snd_assert(bpos <= pcmp->dma_size, return -EIO);
358 snd_assert(bpos + len <= pcmp->dma_size, 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 snd_gus_card_t *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
375static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream,
376 int voice,
377 snd_pcm_uframes_t pos,
378 snd_pcm_uframes_t count)
379{
380 snd_pcm_runtime_t *runtime = substream->runtime;
381 gus_pcm_private_t *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 snd_assert(bpos <= pcmp->dma_size, return -EIO);
387 snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
388 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
389 if (snd_gf1_pcm_use_dma && len > 32) {
390 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
391 } else {
392 snd_gus_card_t *gus = pcmp->gus;
393 int err, w16, invert;
394
395 w16 = (snd_pcm_format_width(runtime->format) == 16);
396 invert = snd_pcm_format_unsigned(runtime->format);
397 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
398 return err;
399 }
400 return 0;
401}
402
403static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream,
404 snd_pcm_hw_params_t * hw_params)
405{
406 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
407 snd_pcm_runtime_t *runtime = substream->runtime;
408 gus_pcm_private_t *pcmp = runtime->private_data;
409 int err;
410
411 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
412 return err;
413 if (err > 0) { /* change */
414 snd_gf1_mem_block_t *block;
415 if (pcmp->memory > 0) {
416 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
417 pcmp->memory = 0;
418 }
419 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
420 SNDRV_GF1_MEM_OWNER_DRIVER,
421 "GF1 PCM",
422 runtime->dma_bytes, 1, 32,
423 NULL)) == NULL)
424 return -ENOMEM;
425 pcmp->memory = block->ptr;
426 }
427 pcmp->voices = params_channels(hw_params);
428 if (pcmp->pvoices[0] == NULL) {
429 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
430 return -ENOMEM;
431 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
432 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
433 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
434 pcmp->pvoices[0]->private_data = pcmp;
435 }
436 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
437 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
438 return -ENOMEM;
439 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
440 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
441 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
442 pcmp->pvoices[1]->private_data = pcmp;
443 } else if (pcmp->voices == 1) {
444 if (pcmp->pvoices[1]) {
445 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
446 pcmp->pvoices[1] = NULL;
447 }
448 }
449 return 0;
450}
451
452static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream)
453{
454 snd_pcm_runtime_t *runtime = substream->runtime;
455 gus_pcm_private_t *pcmp = runtime->private_data;
456
457 snd_pcm_lib_free_pages(substream);
458 if (pcmp->pvoices[0]) {
459 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
460 pcmp->pvoices[0] = NULL;
461 }
462 if (pcmp->pvoices[1]) {
463 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
464 pcmp->pvoices[1] = NULL;
465 }
466 if (pcmp->memory > 0) {
467 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
468 pcmp->memory = 0;
469 }
470 return 0;
471}
472
473static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream)
474{
475 snd_pcm_runtime_t *runtime = substream->runtime;
476 gus_pcm_private_t *pcmp = runtime->private_data;
477
478 pcmp->bpos = 0;
479 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
480 pcmp->block_size = snd_pcm_lib_period_bytes(substream);
481 pcmp->blocks = pcmp->dma_size / pcmp->block_size;
482 return 0;
483}
484
485static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream,
486 int cmd)
487{
488 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
489 snd_pcm_runtime_t *runtime = substream->runtime;
490 gus_pcm_private_t *pcmp = runtime->private_data;
491 int voice;
492
493 if (cmd == SNDRV_PCM_TRIGGER_START) {
494 snd_gf1_pcm_trigger_up(substream);
495 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
496 spin_lock(&pcmp->lock);
497 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
498 spin_unlock(&pcmp->lock);
499 voice = pcmp->pvoices[0]->number;
500 snd_gf1_stop_voices(gus, voice, voice);
501 if (pcmp->pvoices[1]) {
502 voice = pcmp->pvoices[1]->number;
503 snd_gf1_stop_voices(gus, voice, voice);
504 }
505 } else {
506 return -EINVAL;
507 }
508 return 0;
509}
510
511static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream)
512{
513 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
514 snd_pcm_runtime_t *runtime = substream->runtime;
515 gus_pcm_private_t *pcmp = runtime->private_data;
516 unsigned int pos;
517 unsigned char voice_ctrl;
518
519 pos = 0;
520 spin_lock(&gus->reg_lock);
521 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
522 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
523 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
524 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
525 if (substream->runtime->channels > 1)
526 pos <<= 1;
527 pos = bytes_to_frames(runtime, pos);
528 }
529 spin_unlock(&gus->reg_lock);
530 return pos;
531}
532
533static ratnum_t clock = {
534 .num = 9878400/16,
535 .den_min = 2,
536 .den_max = 257,
537 .den_step = 1,
538};
539
540static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks = {
541 .nrats = 1,
542 .rats = &clock,
543};
544
545static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
546 snd_pcm_hw_params_t * hw_params)
547{
548 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
549
550 gus->c_dma_size = params_buffer_bytes(hw_params);
551 gus->c_period_size = params_period_bytes(hw_params);
552 gus->c_pos = 0;
553 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
554 if (params_channels(hw_params) > 1)
555 gus->gf1.pcm_rcntrl_reg |= 2;
556 if (gus->gf1.dma2 > 3)
557 gus->gf1.pcm_rcntrl_reg |= 4;
558 if (snd_pcm_format_unsigned(params_format(hw_params)))
559 gus->gf1.pcm_rcntrl_reg |= 0x80;
560 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
561}
562
563static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream)
564{
565 return snd_pcm_lib_free_pages(substream);
566}
567
568static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
569{
570 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
571 snd_pcm_runtime_t *runtime = substream->runtime;
572
573 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
574 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
575 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
576 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
577 return 0;
578}
579
580static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream,
581 int cmd)
582{
583 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
584 int val;
585
586 if (cmd == SNDRV_PCM_TRIGGER_START) {
587 val = gus->gf1.pcm_rcntrl_reg;
588 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
589 val = 0;
590 } else {
591 return -EINVAL;
592 }
593
594 spin_lock(&gus->reg_lock);
595 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
596 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
597 spin_unlock(&gus->reg_lock);
598 return 0;
599}
600
601static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream)
602{
603 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
604 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
605 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
606 return pos;
607}
608
609static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus)
610{
611 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
612 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
613 if (gus->pcm_cap_substream != NULL) {
614 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
615 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
616 gus->c_pos += gus->c_period_size;
617 snd_pcm_period_elapsed(gus->pcm_cap_substream);
618 }
619}
620
621static snd_pcm_hardware_t snd_gf1_pcm_playback =
622{
623 .info = SNDRV_PCM_INFO_NONINTERLEAVED,
624 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
625 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
626 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
627 .rate_min = 5510,
628 .rate_max = 48000,
629 .channels_min = 1,
630 .channels_max = 2,
631 .buffer_bytes_max = (128*1024),
632 .period_bytes_min = 64,
633 .period_bytes_max = (128*1024),
634 .periods_min = 1,
635 .periods_max = 1024,
636 .fifo_size = 0,
637};
638
639static snd_pcm_hardware_t snd_gf1_pcm_capture =
640{
641 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
642 SNDRV_PCM_INFO_MMAP_VALID),
643 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
644 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
645 .rate_min = 5510,
646 .rate_max = 44100,
647 .channels_min = 1,
648 .channels_max = 2,
649 .buffer_bytes_max = (128*1024),
650 .period_bytes_min = 64,
651 .period_bytes_max = (128*1024),
652 .periods_min = 1,
653 .periods_max = 1024,
654 .fifo_size = 0,
655};
656
657static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime)
658{
659 gus_pcm_private_t * pcmp = runtime->private_data;
660 kfree(pcmp);
661}
662
663static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
664{
665 gus_pcm_private_t *pcmp;
666 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
667 snd_pcm_runtime_t *runtime = substream->runtime;
668 int err;
669
670 pcmp = kcalloc(1, sizeof(*pcmp), GFP_KERNEL);
671 if (pcmp == NULL)
672 return -ENOMEM;
673 pcmp->gus = gus;
674 spin_lock_init(&pcmp->lock);
675 init_waitqueue_head(&pcmp->sleep);
676 atomic_set(&pcmp->dma_count, 0);
677
678 runtime->private_data = pcmp;
679 runtime->private_free = snd_gf1_pcm_playback_free;
680
681#if 0
682 printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
683#endif
684 if ((err = snd_gf1_dma_init(gus)) < 0)
685 return err;
686 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
687 pcmp->substream = substream;
688 runtime->hw = snd_gf1_pcm_playback;
689 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
690 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
691 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
692 return 0;
693}
694
695static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
696{
697 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
698 snd_pcm_runtime_t *runtime = substream->runtime;
699 gus_pcm_private_t *pcmp = runtime->private_data;
700
701 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
702 snd_printk("gf1 pcm - serious DMA problem\n");
703
704 snd_gf1_dma_done(gus);
705 return 0;
706}
707
708static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
709{
710 snd_pcm_runtime_t *runtime = substream->runtime;
711 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
712
713 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
714 gus->pcm_cap_substream = substream;
715 substream->runtime->hw = snd_gf1_pcm_capture;
716 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
717 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
718 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
719 &hw_constraints_clocks);
720 return 0;
721}
722
723static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
724{
725 snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
726
727 gus->pcm_cap_substream = NULL;
728 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
729 return 0;
730}
731
732static void snd_gf1_pcm_free(snd_pcm_t *pcm)
733{
734 snd_gus_card_t *gus = pcm->private_data;
735 gus->pcm = NULL;
736 snd_pcm_lib_preallocate_free_for_all(pcm);
737}
738
739static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
740{
741 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
742 uinfo->count = 2;
743 uinfo->value.integer.min = 0;
744 uinfo->value.integer.max = 127;
745 return 0;
746}
747
748static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
749{
750 snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
751 unsigned long flags;
752
753 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
754 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
755 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
756 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
757 return 0;
758}
759
760static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
761{
762 snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
763 unsigned long flags;
764 int change;
765 unsigned int idx;
766 unsigned short val1, val2, vol;
767 gus_pcm_private_t *pcmp;
768 snd_gus_voice_t *pvoice;
769
770 val1 = ucontrol->value.integer.value[0] & 127;
771 val2 = ucontrol->value.integer.value[1] & 127;
772 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
773 change = val1 != gus->gf1.pcm_volume_level_left1 ||
774 val2 != gus->gf1.pcm_volume_level_right1;
775 gus->gf1.pcm_volume_level_left1 = val1;
776 gus->gf1.pcm_volume_level_right1 = val2;
777 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
778 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
779 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
780 /* are we active? */
781 spin_lock_irqsave(&gus->voice_alloc, flags);
782 for (idx = 0; idx < 32; idx++) {
783 pvoice = &gus->gf1.voices[idx];
784 if (!pvoice->pcm)
785 continue;
786 pcmp = pvoice->private_data;
787 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
788 continue;
789 /* load real volume - better precision */
790 spin_lock_irqsave(&gus->reg_lock, flags);
791 snd_gf1_select_voice(gus, pvoice->number);
792 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
793 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
794 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
795 pcmp->final_volume = 1;
796 spin_unlock_irqrestore(&gus->reg_lock, flags);
797 }
798 spin_unlock_irqrestore(&gus->voice_alloc, flags);
799 return change;
800}
801
802static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
803{
804 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
805 .name = "PCM 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
811static snd_kcontrol_new_t snd_gf1_pcm_volume_control1 =
812{
813 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
814 .name = "GPCM Playback Volume",
815 .info = snd_gf1_pcm_volume_info,
816 .get = snd_gf1_pcm_volume_get,
817 .put = snd_gf1_pcm_volume_put
818};
819
820static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
821 .open = snd_gf1_pcm_playback_open,
822 .close = snd_gf1_pcm_playback_close,
823 .ioctl = snd_pcm_lib_ioctl,
824 .hw_params = snd_gf1_pcm_playback_hw_params,
825 .hw_free = snd_gf1_pcm_playback_hw_free,
826 .prepare = snd_gf1_pcm_playback_prepare,
827 .trigger = snd_gf1_pcm_playback_trigger,
828 .pointer = snd_gf1_pcm_playback_pointer,
829 .copy = snd_gf1_pcm_playback_copy,
830 .silence = snd_gf1_pcm_playback_silence,
831};
832
833static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
834 .open = snd_gf1_pcm_capture_open,
835 .close = snd_gf1_pcm_capture_close,
836 .ioctl = snd_pcm_lib_ioctl,
837 .hw_params = snd_gf1_pcm_capture_hw_params,
838 .hw_free = snd_gf1_pcm_capture_hw_free,
839 .prepare = snd_gf1_pcm_capture_prepare,
840 .trigger = snd_gf1_pcm_capture_trigger,
841 .pointer = snd_gf1_pcm_capture_pointer,
842};
843
844int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
845{
846 snd_card_t *card;
847 snd_kcontrol_t *kctl;
848 snd_pcm_t *pcm;
849 snd_pcm_substream_t *substream;
850 int capture, err;
851
852 if (rpcm)
853 *rpcm = NULL;
854 card = gus->card;
855 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
856 err = snd_pcm_new(card,
857 gus->interwave ? "AMD InterWave" : "GF1",
858 pcm_dev,
859 gus->gf1.pcm_channels / 2,
860 capture,
861 &pcm);
862 if (err < 0)
863 return err;
864 pcm->private_data = gus;
865 pcm->private_free = snd_gf1_pcm_free;
866 /* playback setup */
867 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
868
869 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
870 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
871 snd_dma_isa_data(),
872 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
873
874 pcm->info_flags = 0;
875 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
876 if (capture) {
877 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
878 if (gus->gf1.dma2 == gus->gf1.dma1)
879 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
880 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
881 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
882 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
883 }
884 strcpy(pcm->name, pcm->id);
885 if (gus->interwave) {
886 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
887 }
888 strcat(pcm->name, " (synth)");
889 gus->pcm = pcm;
890
891 if (gus->codec_flag)
892 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
893 else
894 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
895 if ((err = snd_ctl_add(card, kctl)) < 0)
896 return err;
897 kctl->id.index = control_index;
898
899 if (rpcm)
900 *rpcm = pcm;
901 return 0;
902}
903
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-11 06:29:29 -0500