1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*********************************************************************
3 *
4 * 2002/06/30 Karsten Wiese:
5 * removed kernel-version dependencies.
6 * ripped from linux kernel 2.4.18 (OSS Implementation) by me.
7 * In the OSS Version, this file is compiled to a separate MODULE,
8 * that is used by the pinnacle and the classic driver.
9 * since there is no classic driver for alsa yet (i dont have a classic
10 * & writing one blindfold is difficult) this file's object is statically
11 * linked into the pinnacle-driver-module for now. look for the string
12 * "uncomment this to make this a module again"
13 * to do guess what.
14 *
15 * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
16 *
17 * msnd.c - Driver Base
18 *
19 * Turtle Beach MultiSound Sound Card Driver for Linux
20 *
21 * Copyright (C) 1998 Andrew Veliath
22 *
23 ********************************************************************/
24
25 #include <linux/kernel.h>
26 #include <linux/sched/signal.h>
27 #include <linux/types.h>
28 #include <linux/interrupt.h>
29 #include <linux/io.h>
30 #include <linux/fs.h>
31 #include <linux/delay.h>
32 #include <linux/module.h>
33
34 #include <sound/core.h>
35 #include <sound/initval.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38
39 #include "msnd.h"
40
41 #define LOGNAME "msnd"
42
43
44 void snd_msnd_init_queue(void __iomem *base, int start, int size)
45 {
46 writew(PCTODSP_BASED(start), base + JQS_wStart);
47 writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
48 writew(0, base + JQS_wHead);
49 writew(0, base + JQS_wTail);
50 }
51 EXPORT_SYMBOL(snd_msnd_init_queue);
52
53 static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
54 {
55 unsigned int io = dev->io;
56 int timeout = 1000;
57
58 while (timeout-- > 0)
59 if (inb(io + HP_ISR) & HPISR_TXDE)
60 return 0;
61
62 return -EIO;
63 }
64
65 static int snd_msnd_wait_HC0(struct snd_msnd *dev)
66 {
67 unsigned int io = dev->io;
68 int timeout = 1000;
69
70 while (timeout-- > 0)
71 if (!(inb(io + HP_CVR) & HPCVR_HC))
72 return 0;
73
74 return -EIO;
75 }
76
77 int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
78 {
79 unsigned long flags;
80
81 spin_lock_irqsave(&dev->lock, flags);
82 if (snd_msnd_wait_HC0(dev) == 0) {
83 outb(cmd, dev->io + HP_CVR);
84 spin_unlock_irqrestore(&dev->lock, flags);
85 return 0;
86 }
87 spin_unlock_irqrestore(&dev->lock, flags);
88
89 snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
90
91 return -EIO;
92 }
93 EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
94
95 int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
96 unsigned char mid, unsigned char low)
97 {
98 unsigned int io = dev->io;
99
100 if (snd_msnd_wait_TXDE(dev) == 0) {
101 outb(high, io + HP_TXH);
102 outb(mid, io + HP_TXM);
103 outb(low, io + HP_TXL);
104 return 0;
105 }
106
107 snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
108
109 return -EIO;
110 }
111 EXPORT_SYMBOL(snd_msnd_send_word);
112
113 int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
114 {
115 int i;
116
117 if (len % 3 != 0) {
118 snd_printk(KERN_ERR LOGNAME
119 ": Upload host data not multiple of 3!\n");
120 return -EINVAL;
121 }
122
123 for (i = 0; i < len; i += 3)
124 if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
125 return -EIO;
126
127 inb(dev->io + HP_RXL);
128 inb(dev->io + HP_CVR);
129
130 return 0;
131 }
132 EXPORT_SYMBOL(snd_msnd_upload_host);
133
134 int snd_msnd_enable_irq(struct snd_msnd *dev)
135 {
136 unsigned long flags;
137
138 if (dev->irq_ref++)
139 return 0;
140
141 snd_printdd(LOGNAME ": Enabling IRQ\n");
142
143 spin_lock_irqsave(&dev->lock, flags);
144 if (snd_msnd_wait_TXDE(dev) == 0) {
145 outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
146 if (dev->type == msndClassic)
147 outb(dev->irqid, dev->io + HP_IRQM);
148
149 outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
150 outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
151 enable_irq(dev->irq);
152 snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
153 dev->dspq_buff_size);
154 spin_unlock_irqrestore(&dev->lock, flags);
155 return 0;
156 }
157 spin_unlock_irqrestore(&dev->lock, flags);
158
159 snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
160
161 return -EIO;
162 }
163 EXPORT_SYMBOL(snd_msnd_enable_irq);
164
165 int snd_msnd_disable_irq(struct snd_msnd *dev)
166 {
167 unsigned long flags;
168
169 if (--dev->irq_ref > 0)
170 return 0;
171
172 if (dev->irq_ref < 0)
173 snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
174 dev->irq_ref);
175
176 snd_printdd(LOGNAME ": Disabling IRQ\n");
177
178 spin_lock_irqsave(&dev->lock, flags);
179 if (snd_msnd_wait_TXDE(dev) == 0) {
180 outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
181 if (dev->type == msndClassic)
182 outb(HPIRQ_NONE, dev->io + HP_IRQM);
183 disable_irq(dev->irq);
184 spin_unlock_irqrestore(&dev->lock, flags);
185 return 0;
186 }
187 spin_unlock_irqrestore(&dev->lock, flags);
188
189 snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
190
191 return -EIO;
192 }
193 EXPORT_SYMBOL(snd_msnd_disable_irq);
194
195 static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
196 {
197 long tmp = (size * HZ * chip->play_sample_size) / 8;
198 return tmp / (chip->play_sample_rate * chip->play_channels);
199 }
200
201 static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
202 {
203 if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
204 return;
205 set_bit(F_WRITEFLUSH, &chip->flags);
206 /* interruptible_sleep_on_timeout(
207 &chip->writeflush,
208 get_play_delay_jiffies(&chip, chip->DAPF.len));*/
209 clear_bit(F_WRITEFLUSH, &chip->flags);
210 if (!signal_pending(current))
211 schedule_timeout_interruptible(
212 get_play_delay_jiffies(chip, chip->play_period_bytes));
213 clear_bit(F_WRITING, &chip->flags);
214 }
215
216 void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
217 {
218 if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
219 clear_bit(F_READING, &chip->flags);
220 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
221 snd_msnd_disable_irq(chip);
222 if (file) {
223 snd_printd(KERN_INFO LOGNAME
224 ": Stopping read for %p\n", file);
225 chip->mode &= ~FMODE_READ;
226 }
227 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
228 }
229 if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
230 if (test_bit(F_WRITING, &chip->flags)) {
231 snd_msnd_dsp_write_flush(chip);
232 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
233 }
234 snd_msnd_disable_irq(chip);
235 if (file) {
236 snd_printd(KERN_INFO
237 LOGNAME ": Stopping write for %p\n", file);
238 chip->mode &= ~FMODE_WRITE;
239 }
240 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
241 }
242 }
243 EXPORT_SYMBOL(snd_msnd_dsp_halt);
244
245
246 int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
247 {
248 int /*size, n,*/ timeout = 3;
249 u16 wTmp;
250 /* void *DAQD; */
251
252 /* Increment the tail and check for queue wrap */
253 wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
254 if (wTmp > readw(chip->DARQ + JQS_wSize))
255 wTmp = 0;
256 while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
257 udelay(1);
258
259 if (chip->capturePeriods == 2) {
260 void __iomem *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
261 bank * DAQDS__size + DAQDS_wStart;
262 unsigned short offset = 0x3000 + chip->capturePeriodBytes;
263
264 if (readw(pDAQ) != PCTODSP_BASED(0x3000))
265 offset = 0x3000;
266 writew(PCTODSP_BASED(offset), pDAQ);
267 }
268
269 writew(wTmp, chip->DARQ + JQS_wTail);
270
271 #if 0
272 /* Get our digital audio queue struct */
273 DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
274
275 /* Get length of data */
276 size = readw(DAQD + DAQDS_wSize);
277
278 /* Read data from the head (unprotected bank 1 access okay
279 since this is only called inside an interrupt) */
280 outb(HPBLKSEL_1, chip->io + HP_BLKS);
281 n = msnd_fifo_write(&chip->DARF,
282 (char *)(chip->base + bank * DAR_BUFF_SIZE),
283 size, 0);
284 if (n <= 0) {
285 outb(HPBLKSEL_0, chip->io + HP_BLKS);
286 return n;
287 }
288 outb(HPBLKSEL_0, chip->io + HP_BLKS);
289 #endif
290
291 return 1;
292 }
293 EXPORT_SYMBOL(snd_msnd_DARQ);
294
295 int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
296 {
297 u16 DAPQ_tail;
298 int protect = start, nbanks = 0;
299 void __iomem *DAQD;
300 static int play_banks_submitted;
301 /* unsigned long flags;
302 spin_lock_irqsave(&chip->lock, flags); not necessary */
303
304 DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
305 while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
306 int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
307
308 if (start) {
309 start = 0;
310 play_banks_submitted = 0;
311 }
312
313 /* Get our digital audio queue struct */
314 DAQD = bank_num * DAQDS__size + chip->mappedbase +
315 DAPQ_DATA_BUFF;
316
317 /* Write size of this bank */
318 writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
319 if (play_banks_submitted < 3)
320 ++play_banks_submitted;
321 else if (chip->playPeriods == 2) {
322 unsigned short offset = chip->play_period_bytes;
323
324 if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
325 offset = 0;
326
327 writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
328 }
329 ++nbanks;
330
331 /* Then advance the tail */
332 /*
333 if (protect)
334 snd_printd(KERN_INFO "B %X %lX\n",
335 bank_num, xtime.tv_usec);
336 */
337
338 DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
339 writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
340 /* Tell the DSP to play the bank */
341 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
342 if (protect)
343 if (2 == bank_num)
344 break;
345 }
346 /*
347 if (protect)
348 snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
349 */
350 /* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
351 return nbanks;
352 }
353 EXPORT_SYMBOL(snd_msnd_DAPQ);
354
355 static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
356 unsigned int pcm_periods,
357 unsigned int pcm_count)
358 {
359 int n;
360 void __iomem *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
361
362 chip->last_playbank = -1;
363 chip->playLimit = pcm_count * (pcm_periods - 1);
364 chip->playPeriods = pcm_periods;
365 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
366 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
367
368 chip->play_period_bytes = pcm_count;
369
370 for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
371 writew(PCTODSP_BASED((u32)(pcm_count * n)),
372 pDAQ + DAQDS_wStart);
373 writew(0, pDAQ + DAQDS_wSize);
374 writew(1, pDAQ + DAQDS_wFormat);
375 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
376 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
377 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
378 writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
379 writew(n, pDAQ + DAQDS_wFlags);
380 }
381 }
382
383 static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
384 unsigned int pcm_periods,
385 unsigned int pcm_count)
386 {
387 int n;
388 void __iomem *pDAQ;
389 /* unsigned long flags; */
390
391 /* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
392
393 chip->last_recbank = 2;
394 chip->captureLimit = pcm_count * (pcm_periods - 1);
395 chip->capturePeriods = pcm_periods;
396 writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
397 writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
398 chip->DARQ + JQS_wTail);
399
400 #if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
401 spin_lock_irqsave(&chip->lock, flags);
402 outb(HPBLKSEL_1, chip->io + HP_BLKS);
403 memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
404 outb(HPBLKSEL_0, chip->io + HP_BLKS);
405 spin_unlock_irqrestore(&chip->lock, flags);
406 #endif
407
408 chip->capturePeriodBytes = pcm_count;
409 snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
410
411 pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
412
413 for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
414 u32 tmp = pcm_count * n;
415
416 writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
417 writew(pcm_count, pDAQ + DAQDS_wSize);
418 writew(1, pDAQ + DAQDS_wFormat);
419 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
420 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
421 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
422 writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
423 writew(n, pDAQ + DAQDS_wFlags);
424 }
425 }
426
427 static const struct snd_pcm_hardware snd_msnd_playback = {
428 .info = SNDRV_PCM_INFO_MMAP |
429 SNDRV_PCM_INFO_INTERLEAVED |
430 SNDRV_PCM_INFO_MMAP_VALID |
431 SNDRV_PCM_INFO_BATCH,
432 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
433 .rates = SNDRV_PCM_RATE_8000_48000,
434 .rate_min = 8000,
435 .rate_max = 48000,
436 .channels_min = 1,
437 .channels_max = 2,
438 .buffer_bytes_max = 0x3000,
439 .period_bytes_min = 0x40,
440 .period_bytes_max = 0x1800,
441 .periods_min = 2,
442 .periods_max = 3,
443 .fifo_size = 0,
444 };
445
446 static const struct snd_pcm_hardware snd_msnd_capture = {
447 .info = SNDRV_PCM_INFO_MMAP |
448 SNDRV_PCM_INFO_INTERLEAVED |
449 SNDRV_PCM_INFO_MMAP_VALID |
450 SNDRV_PCM_INFO_BATCH,
451 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
452 .rates = SNDRV_PCM_RATE_8000_48000,
453 .rate_min = 8000,
454 .rate_max = 48000,
455 .channels_min = 1,
456 .channels_max = 2,
457 .buffer_bytes_max = 0x3000,
458 .period_bytes_min = 0x40,
459 .period_bytes_max = 0x1800,
460 .periods_min = 2,
461 .periods_max = 3,
462 .fifo_size = 0,
463 };
464
465
466 static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
467 {
468 struct snd_pcm_runtime *runtime = substream->runtime;
469 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
470
471 set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
472 clear_bit(F_WRITING, &chip->flags);
473 snd_msnd_enable_irq(chip);
474
475 runtime->dma_area = (__force void *)chip->mappedbase;
476 runtime->dma_bytes = 0x3000;
477
478 chip->playback_substream = substream;
479 runtime->hw = snd_msnd_playback;
480 return 0;
481 }
482
483 static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
484 {
485 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
486
487 snd_msnd_disable_irq(chip);
488 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
489 return 0;
490 }
491
492
493 static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
494 struct snd_pcm_hw_params *params)
495 {
496 int i;
497 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
498 void __iomem *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
499
500 chip->play_sample_size = snd_pcm_format_width(params_format(params));
501 chip->play_channels = params_channels(params);
502 chip->play_sample_rate = params_rate(params);
503
504 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
505 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
506 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
507 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
508 }
509 /* dont do this here:
510 * snd_msnd_calibrate_adc(chip->play_sample_rate);
511 */
512
513 return 0;
514 }
515
516 static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
517 {
518 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
519 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
520 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
521 unsigned int pcm_periods = pcm_size / pcm_count;
522
523 snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
524 chip->playDMAPos = 0;
525 return 0;
526 }
527
528 static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
529 int cmd)
530 {
531 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
532 int result = 0;
533
534 if (cmd == SNDRV_PCM_TRIGGER_START) {
535 snd_printdd("snd_msnd_playback_trigger(START)\n");
536 chip->banksPlayed = 0;
537 set_bit(F_WRITING, &chip->flags);
538 snd_msnd_DAPQ(chip, 1);
539 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
540 snd_printdd("snd_msnd_playback_trigger(STop)\n");
541 /* interrupt diagnostic, comment this out later */
542 clear_bit(F_WRITING, &chip->flags);
543 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
544 } else {
545 snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
546 result = -EINVAL;
547 }
548
549 snd_printdd("snd_msnd_playback_trigger() ENDE\n");
550 return result;
551 }
552
553 static snd_pcm_uframes_t
554 snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
555 {
556 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
557
558 return bytes_to_frames(substream->runtime, chip->playDMAPos);
559 }
560
561
562 static const struct snd_pcm_ops snd_msnd_playback_ops = {
563 .open = snd_msnd_playback_open,
564 .close = snd_msnd_playback_close,
565 .ioctl = snd_pcm_lib_ioctl,
566 .hw_params = snd_msnd_playback_hw_params,
567 .prepare = snd_msnd_playback_prepare,
568 .trigger = snd_msnd_playback_trigger,
569 .pointer = snd_msnd_playback_pointer,
570 };
571
572 static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
573 {
574 struct snd_pcm_runtime *runtime = substream->runtime;
575 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
576
577 set_bit(F_AUDIO_READ_INUSE, &chip->flags);
578 snd_msnd_enable_irq(chip);
579 runtime->dma_area = (__force void *)chip->mappedbase + 0x3000;
580 runtime->dma_bytes = 0x3000;
581 memset(runtime->dma_area, 0, runtime->dma_bytes);
582 chip->capture_substream = substream;
583 runtime->hw = snd_msnd_capture;
584 return 0;
585 }
586
587 static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
588 {
589 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
590
591 snd_msnd_disable_irq(chip);
592 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
593 return 0;
594 }
595
596 static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
597 {
598 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
599 unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
600 unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
601 unsigned int pcm_periods = pcm_size / pcm_count;
602
603 snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
604 chip->captureDMAPos = 0;
605 return 0;
606 }
607
608 static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
609 int cmd)
610 {
611 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
612
613 if (cmd == SNDRV_PCM_TRIGGER_START) {
614 chip->last_recbank = -1;
615 set_bit(F_READING, &chip->flags);
616 if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
617 return 0;
618
619 clear_bit(F_READING, &chip->flags);
620 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
621 clear_bit(F_READING, &chip->flags);
622 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
623 return 0;
624 }
625 return -EINVAL;
626 }
627
628
629 static snd_pcm_uframes_t
630 snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
631 {
632 struct snd_pcm_runtime *runtime = substream->runtime;
633 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
634
635 return bytes_to_frames(runtime, chip->captureDMAPos);
636 }
637
638
639 static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
640 struct snd_pcm_hw_params *params)
641 {
642 int i;
643 struct snd_msnd *chip = snd_pcm_substream_chip(substream);
644 void __iomem *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
645
646 chip->capture_sample_size = snd_pcm_format_width(params_format(params));
647 chip->capture_channels = params_channels(params);
648 chip->capture_sample_rate = params_rate(params);
649
650 for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
651 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
652 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
653 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
654 }
655 return 0;
656 }
657
658
659 static const struct snd_pcm_ops snd_msnd_capture_ops = {
660 .open = snd_msnd_capture_open,
661 .close = snd_msnd_capture_close,
662 .ioctl = snd_pcm_lib_ioctl,
663 .hw_params = snd_msnd_capture_hw_params,
664 .prepare = snd_msnd_capture_prepare,
665 .trigger = snd_msnd_capture_trigger,
666 .pointer = snd_msnd_capture_pointer,
667 };
668
669
670 int snd_msnd_pcm(struct snd_card *card, int device)
671 {
672 struct snd_msnd *chip = card->private_data;
673 struct snd_pcm *pcm;
674 int err;
675
676 err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
677 if (err < 0)
678 return err;
679
680 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
681 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
682
683 pcm->private_data = chip;
684 strcpy(pcm->name, "Hurricane");
685
686 return 0;
687 }
688 EXPORT_SYMBOL(snd_msnd_pcm);
689
690 MODULE_DESCRIPTION("Common routines for Turtle Beach Multisound drivers");
691 MODULE_LICENSE("GPL");
692
693
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.