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lx6464es.c
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1 /* -*- linux-c -*- *
2  *
3  * ALSA driver for the digigram lx6464es interface
4  *
5  * Copyright (c) 2008, 2009 Tim Blechmann <[email protected]>
6  *
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; see the file COPYING. If not, write to
20  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21  * Boston, MA 02111-1307, USA.
22  *
23  */
24 
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/delay.h>
29 #include <linux/slab.h>
30 
31 #include <sound/initval.h>
32 #include <sound/control.h>
33 #include <sound/info.h>
34 
35 #include "lx6464es.h"
36 
37 MODULE_AUTHOR("Tim Blechmann");
38 MODULE_LICENSE("GPL");
39 MODULE_DESCRIPTION("digigram lx6464es");
40 MODULE_SUPPORTED_DEVICE("{digigram lx6464es{}}");
41 
42 
43 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
44 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
46 
47 module_param_array(index, int, NULL, 0444);
48 MODULE_PARM_DESC(index, "Index value for Digigram LX6464ES interface.");
49 module_param_array(id, charp, NULL, 0444);
50 MODULE_PARM_DESC(id, "ID string for Digigram LX6464ES interface.");
51 module_param_array(enable, bool, NULL, 0444);
52 MODULE_PARM_DESC(enable, "Enable/disable specific Digigram LX6464ES soundcards.");
53 
54 static const char card_name[] = "LX6464ES";
55 
56 
57 #define PCI_DEVICE_ID_PLX_LX6464ES PCI_DEVICE_ID_PLX_9056
58 
59 static DEFINE_PCI_DEVICE_TABLE(snd_lx6464es_ids) = {
61  .subvendor = PCI_VENDOR_ID_DIGIGRAM,
63  }, /* LX6464ES */
65  .subvendor = PCI_VENDOR_ID_DIGIGRAM,
67  }, /* LX6464ES-CAE */
68  { 0, },
69 };
70 
71 MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids);
72 
73 
74 
75 /* PGO pour USERo dans le registre pci_0x06/loc_0xEC */
76 #define CHIPSC_RESET_XILINX (1L<<16)
77 
78 
79 /* alsa callbacks */
80 static struct snd_pcm_hardware lx_caps = {
81  .info = (SNDRV_PCM_INFO_MMAP |
89  .rates = (SNDRV_PCM_RATE_CONTINUOUS |
91  .rate_min = 8000,
92  .rate_max = 192000,
93  .channels_min = 2,
94  .channels_max = 64,
97  .period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER),
98  .periods_min = 2,
99  .periods_max = MAX_STREAM_BUFFER,
100 };
101 
102 static int lx_set_granularity(struct lx6464es *chip, u32 gran);
103 
104 
105 static int lx_hardware_open(struct lx6464es *chip,
106  struct snd_pcm_substream *substream)
107 {
108  int err = 0;
109  struct snd_pcm_runtime *runtime = substream->runtime;
110  int channels = runtime->channels;
111  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
112 
114 
115  snd_printd(LXP "allocating pipe for %d channels\n", channels);
116  err = lx_pipe_allocate(chip, 0, is_capture, channels);
117  if (err < 0) {
118  snd_printk(KERN_ERR LXP "allocating pipe failed\n");
119  return err;
120  }
121 
122  err = lx_set_granularity(chip, period_size);
123  if (err < 0) {
124  snd_printk(KERN_ERR LXP "setting granularity to %ld failed\n",
125  period_size);
126  return err;
127  }
128 
129  return 0;
130 }
131 
132 static int lx_hardware_start(struct lx6464es *chip,
133  struct snd_pcm_substream *substream)
134 {
135  int err = 0;
136  struct snd_pcm_runtime *runtime = substream->runtime;
137  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
138 
139  snd_printd(LXP "setting stream format\n");
140  err = lx_stream_set_format(chip, runtime, 0, is_capture);
141  if (err < 0) {
142  snd_printk(KERN_ERR LXP "setting stream format failed\n");
143  return err;
144  }
145 
146  snd_printd(LXP "starting pipe\n");
147  err = lx_pipe_start(chip, 0, is_capture);
148  if (err < 0) {
149  snd_printk(KERN_ERR LXP "starting pipe failed\n");
150  return err;
151  }
152 
153  snd_printd(LXP "waiting for pipe to start\n");
154  err = lx_pipe_wait_for_start(chip, 0, is_capture);
155  if (err < 0) {
156  snd_printk(KERN_ERR LXP "waiting for pipe failed\n");
157  return err;
158  }
159 
160  return err;
161 }
162 
163 
164 static int lx_hardware_stop(struct lx6464es *chip,
165  struct snd_pcm_substream *substream)
166 {
167  int err = 0;
168  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
169 
170  snd_printd(LXP "pausing pipe\n");
171  err = lx_pipe_pause(chip, 0, is_capture);
172  if (err < 0) {
173  snd_printk(KERN_ERR LXP "pausing pipe failed\n");
174  return err;
175  }
176 
177  snd_printd(LXP "waiting for pipe to become idle\n");
178  err = lx_pipe_wait_for_idle(chip, 0, is_capture);
179  if (err < 0) {
180  snd_printk(KERN_ERR LXP "waiting for pipe failed\n");
181  return err;
182  }
183 
184  snd_printd(LXP "stopping pipe\n");
185  err = lx_pipe_stop(chip, 0, is_capture);
186  if (err < 0) {
187  snd_printk(LXP "stopping pipe failed\n");
188  return err;
189  }
190 
191  return err;
192 }
193 
194 
195 static int lx_hardware_close(struct lx6464es *chip,
196  struct snd_pcm_substream *substream)
197 {
198  int err = 0;
199  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
200 
201  snd_printd(LXP "releasing pipe\n");
202  err = lx_pipe_release(chip, 0, is_capture);
203  if (err < 0) {
204  snd_printk(LXP "releasing pipe failed\n");
205  return err;
206  }
207 
208  return err;
209 }
210 
211 
212 static int lx_pcm_open(struct snd_pcm_substream *substream)
213 {
214  struct lx6464es *chip = snd_pcm_substream_chip(substream);
215  struct snd_pcm_runtime *runtime = substream->runtime;
216  int err = 0;
217  int board_rate;
218 
219  snd_printdd("->lx_pcm_open\n");
220  mutex_lock(&chip->setup_mutex);
221 
222  /* copy the struct snd_pcm_hardware struct */
223  runtime->hw = lx_caps;
224 
225 #if 0
226  /* buffer-size should better be multiple of period-size */
227  err = snd_pcm_hw_constraint_integer(runtime,
229  if (err < 0) {
230  snd_printk(KERN_WARNING LXP "could not constrain periods\n");
231  goto exit;
232  }
233 #endif
234 
235  /* the clock rate cannot be changed */
236  board_rate = chip->board_sample_rate;
238  board_rate, board_rate);
239 
240  if (err < 0) {
241  snd_printk(KERN_WARNING LXP "could not constrain periods\n");
242  goto exit;
243  }
244 
245  /* constrain period size */
246  err = snd_pcm_hw_constraint_minmax(runtime,
250  if (err < 0) {
252  "could not constrain period size\n");
253  goto exit;
254  }
255 
256  snd_pcm_hw_constraint_step(runtime, 0,
258 
259  snd_pcm_set_sync(substream);
260  err = 0;
261 
262 exit:
263  runtime->private_data = chip;
264 
265  mutex_unlock(&chip->setup_mutex);
266  snd_printdd("<-lx_pcm_open, %d\n", err);
267  return err;
268 }
269 
270 static int lx_pcm_close(struct snd_pcm_substream *substream)
271 {
272  int err = 0;
273  snd_printdd("->lx_pcm_close\n");
274  return err;
275 }
276 
277 static snd_pcm_uframes_t lx_pcm_stream_pointer(struct snd_pcm_substream
278  *substream)
279 {
280  struct lx6464es *chip = snd_pcm_substream_chip(substream);
282  unsigned long flags;
283  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
284 
285  struct lx_stream *lx_stream = is_capture ? &chip->capture_stream :
286  &chip->playback_stream;
287 
288  snd_printdd("->lx_pcm_stream_pointer\n");
289 
290  spin_lock_irqsave(&chip->lock, flags);
291  pos = lx_stream->frame_pos * substream->runtime->period_size;
292  spin_unlock_irqrestore(&chip->lock, flags);
293 
294  snd_printdd(LXP "stream_pointer at %ld\n", pos);
295  return pos;
296 }
297 
298 static int lx_pcm_prepare(struct snd_pcm_substream *substream)
299 {
300  struct lx6464es *chip = snd_pcm_substream_chip(substream);
301  int err = 0;
302  const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
303 
304  snd_printdd("->lx_pcm_prepare\n");
305 
306  mutex_lock(&chip->setup_mutex);
307 
308  if (chip->hardware_running[is_capture]) {
309  err = lx_hardware_stop(chip, substream);
310  if (err < 0) {
311  snd_printk(KERN_ERR LXP "failed to stop hardware. "
312  "Error code %d\n", err);
313  goto exit;
314  }
315 
316  err = lx_hardware_close(chip, substream);
317  if (err < 0) {
318  snd_printk(KERN_ERR LXP "failed to close hardware. "
319  "Error code %d\n", err);
320  goto exit;
321  }
322  }
323 
324  snd_printd(LXP "opening hardware\n");
325  err = lx_hardware_open(chip, substream);
326  if (err < 0) {
327  snd_printk(KERN_ERR LXP "failed to open hardware. "
328  "Error code %d\n", err);
329  goto exit;
330  }
331 
332  err = lx_hardware_start(chip, substream);
333  if (err < 0) {
334  snd_printk(KERN_ERR LXP "failed to start hardware. "
335  "Error code %d\n", err);
336  goto exit;
337  }
338 
339  chip->hardware_running[is_capture] = 1;
340 
341  if (chip->board_sample_rate != substream->runtime->rate) {
342  if (!err)
343  chip->board_sample_rate = substream->runtime->rate;
344  }
345 
346 exit:
347  mutex_unlock(&chip->setup_mutex);
348  return err;
349 }
350 
351 static int lx_pcm_hw_params(struct snd_pcm_substream *substream,
352  struct snd_pcm_hw_params *hw_params, int is_capture)
353 {
354  struct lx6464es *chip = snd_pcm_substream_chip(substream);
355  int err = 0;
356 
357  snd_printdd("->lx_pcm_hw_params\n");
358 
359  mutex_lock(&chip->setup_mutex);
360 
361  /* set dma buffer */
362  err = snd_pcm_lib_malloc_pages(substream,
363  params_buffer_bytes(hw_params));
364 
365  if (is_capture)
366  chip->capture_stream.stream = substream;
367  else
368  chip->playback_stream.stream = substream;
369 
370  mutex_unlock(&chip->setup_mutex);
371  return err;
372 }
373 
374 static int lx_pcm_hw_params_playback(struct snd_pcm_substream *substream,
375  struct snd_pcm_hw_params *hw_params)
376 {
377  return lx_pcm_hw_params(substream, hw_params, 0);
378 }
379 
380 static int lx_pcm_hw_params_capture(struct snd_pcm_substream *substream,
381  struct snd_pcm_hw_params *hw_params)
382 {
383  return lx_pcm_hw_params(substream, hw_params, 1);
384 }
385 
386 static int lx_pcm_hw_free(struct snd_pcm_substream *substream)
387 {
388  struct lx6464es *chip = snd_pcm_substream_chip(substream);
389  int err = 0;
390  int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
391 
392  snd_printdd("->lx_pcm_hw_free\n");
393  mutex_lock(&chip->setup_mutex);
394 
395  if (chip->hardware_running[is_capture]) {
396  err = lx_hardware_stop(chip, substream);
397  if (err < 0) {
398  snd_printk(KERN_ERR LXP "failed to stop hardware. "
399  "Error code %d\n", err);
400  goto exit;
401  }
402 
403  err = lx_hardware_close(chip, substream);
404  if (err < 0) {
405  snd_printk(KERN_ERR LXP "failed to close hardware. "
406  "Error code %d\n", err);
407  goto exit;
408  }
409 
410  chip->hardware_running[is_capture] = 0;
411  }
412 
413  err = snd_pcm_lib_free_pages(substream);
414 
415  if (is_capture)
416  chip->capture_stream.stream = 0;
417  else
418  chip->playback_stream.stream = 0;
419 
420 exit:
421  mutex_unlock(&chip->setup_mutex);
422  return err;
423 }
424 
425 static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream)
426 {
427  struct snd_pcm_substream *substream = lx_stream->stream;
428  const unsigned int is_capture = lx_stream->is_capture;
429 
430  int err;
431 
432  const u32 channels = substream->runtime->channels;
433  const u32 bytes_per_frame = channels * 3;
434  const u32 period_size = substream->runtime->period_size;
435  const u32 periods = substream->runtime->periods;
436  const u32 period_bytes = period_size * bytes_per_frame;
437 
438  dma_addr_t buf = substream->dma_buffer.addr;
439  int i;
440 
441  u32 needed, freed;
442  u32 size_array[5];
443 
444  for (i = 0; i != periods; ++i) {
445  u32 buffer_index = 0;
446 
447  err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed,
448  size_array);
449  snd_printdd(LXP "starting: needed %d, freed %d\n",
450  needed, freed);
451 
452  err = lx_buffer_give(chip, 0, is_capture, period_bytes,
453  lower_32_bits(buf), upper_32_bits(buf),
454  &buffer_index);
455 
456  snd_printdd(LXP "starting: buffer index %x on %p (%d bytes)\n",
457  buffer_index, (void *)buf, period_bytes);
458  buf += period_bytes;
459  }
460 
461  err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array);
462  snd_printdd(LXP "starting: needed %d, freed %d\n", needed, freed);
463 
464  snd_printd(LXP "starting: starting stream\n");
465  err = lx_stream_start(chip, 0, is_capture);
466  if (err < 0)
467  snd_printk(KERN_ERR LXP "couldn't start stream\n");
468  else
469  lx_stream->status = LX_STREAM_STATUS_RUNNING;
470 
471  lx_stream->frame_pos = 0;
472 }
473 
474 static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream)
475 {
476  const unsigned int is_capture = lx_stream->is_capture;
477  int err;
478 
479  snd_printd(LXP "stopping: stopping stream\n");
480  err = lx_stream_stop(chip, 0, is_capture);
481  if (err < 0)
482  snd_printk(KERN_ERR LXP "couldn't stop stream\n");
483  else
484  lx_stream->status = LX_STREAM_STATUS_FREE;
485 
486 }
487 
488 static void lx_trigger_tasklet_dispatch_stream(struct lx6464es *chip,
489  struct lx_stream *lx_stream)
490 {
491  switch (lx_stream->status) {
493  lx_trigger_start(chip, lx_stream);
494  break;
495 
497  lx_trigger_stop(chip, lx_stream);
498  break;
499 
500  default:
501  break;
502  }
503 }
504 
505 static void lx_trigger_tasklet(unsigned long data)
506 {
507  struct lx6464es *chip = (struct lx6464es *)data;
508  unsigned long flags;
509 
510  snd_printdd("->lx_trigger_tasklet\n");
511 
512  spin_lock_irqsave(&chip->lock, flags);
513  lx_trigger_tasklet_dispatch_stream(chip, &chip->capture_stream);
514  lx_trigger_tasklet_dispatch_stream(chip, &chip->playback_stream);
515  spin_unlock_irqrestore(&chip->lock, flags);
516 }
517 
518 static int lx_pcm_trigger_dispatch(struct lx6464es *chip,
519  struct lx_stream *lx_stream, int cmd)
520 {
521  int err = 0;
522 
523  switch (cmd) {
526  break;
527 
530  break;
531 
532  default:
533  err = -EINVAL;
534  goto exit;
535  }
536  tasklet_schedule(&chip->trigger_tasklet);
537 
538 exit:
539  return err;
540 }
541 
542 
543 static int lx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
544 {
545  struct lx6464es *chip = snd_pcm_substream_chip(substream);
546  const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
547  struct lx_stream *stream = is_capture ? &chip->capture_stream :
548  &chip->playback_stream;
549 
550  snd_printdd("->lx_pcm_trigger\n");
551 
552  return lx_pcm_trigger_dispatch(chip, stream, cmd);
553 }
554 
555 static int snd_lx6464es_free(struct lx6464es *chip)
556 {
557  snd_printdd("->snd_lx6464es_free\n");
558 
559  lx_irq_disable(chip);
560 
561  if (chip->irq >= 0)
562  free_irq(chip->irq, chip);
563 
564  iounmap(chip->port_dsp_bar);
566 
567  pci_release_regions(chip->pci);
568  pci_disable_device(chip->pci);
569 
570  kfree(chip);
571 
572  return 0;
573 }
574 
575 static int snd_lx6464es_dev_free(struct snd_device *device)
576 {
577  return snd_lx6464es_free(device->device_data);
578 }
579 
580 /* reset the dsp during initialization */
581 static int __devinit lx_init_xilinx_reset(struct lx6464es *chip)
582 {
583  int i;
584  u32 plx_reg = lx_plx_reg_read(chip, ePLX_CHIPSC);
585 
586  snd_printdd("->lx_init_xilinx_reset\n");
587 
588  /* activate reset of xilinx */
589  plx_reg &= ~CHIPSC_RESET_XILINX;
590 
591  lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg);
592  msleep(1);
593 
594  lx_plx_reg_write(chip, ePLX_MBOX3, 0);
595  msleep(1);
596 
597  plx_reg |= CHIPSC_RESET_XILINX;
598  lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg);
599 
600  /* deactivate reset of xilinx */
601  for (i = 0; i != 100; ++i) {
602  u32 reg_mbox3;
603  msleep(10);
604  reg_mbox3 = lx_plx_reg_read(chip, ePLX_MBOX3);
605  if (reg_mbox3) {
606  snd_printd(LXP "xilinx reset done\n");
607  snd_printdd(LXP "xilinx took %d loops\n", i);
608  break;
609  }
610  }
611 
612  /* todo: add some error handling? */
613 
614  /* clear mr */
615  lx_dsp_reg_write(chip, eReg_CSM, 0);
616 
617  /* le xilinx ES peut ne pas etre encore pret, on attend. */
618  msleep(600);
619 
620  return 0;
621 }
622 
623 static int __devinit lx_init_xilinx_test(struct lx6464es *chip)
624 {
625  u32 reg;
626 
627  snd_printdd("->lx_init_xilinx_test\n");
628 
629  /* TEST if we have access to Xilinx/MicroBlaze */
630  lx_dsp_reg_write(chip, eReg_CSM, 0);
631 
632  reg = lx_dsp_reg_read(chip, eReg_CSM);
633 
634  if (reg) {
635  snd_printk(KERN_ERR LXP "Problem: Reg_CSM %x.\n", reg);
636 
637  /* PCI9056_SPACE0_REMAP */
638  lx_plx_reg_write(chip, ePLX_PCICR, 1);
639 
640  reg = lx_dsp_reg_read(chip, eReg_CSM);
641  if (reg) {
642  snd_printk(KERN_ERR LXP "Error: Reg_CSM %x.\n", reg);
643  return -EAGAIN; /* seems to be appropriate */
644  }
645  }
646 
647  snd_printd(LXP "Xilinx/MicroBlaze access test successful\n");
648 
649  return 0;
650 }
651 
652 /* initialize ethersound */
653 static int __devinit lx_init_ethersound_config(struct lx6464es *chip)
654 {
655  int i;
656  u32 orig_conf_es = lx_dsp_reg_read(chip, eReg_CONFES);
657 
658  /* configure 64 io channels */
659  u32 conf_es = (orig_conf_es & CONFES_READ_PART_MASK) |
660  (64 << IOCR_INPUTS_OFFSET) |
661  (64 << IOCR_OUTPUTS_OFFSET) |
663 
664  snd_printdd("->lx_init_ethersound\n");
665 
667 
668  /*
669  * write it to the card !
670  * this actually kicks the ES xilinx, the first time since poweron.
671  * the MAC address in the Reg_ADMACESMSB Reg_ADMACESLSB registers
672  * is not ready before this is done, and the bit 2 in Reg_CSES is set.
673  * */
674  lx_dsp_reg_write(chip, eReg_CONFES, conf_es);
675 
676  for (i = 0; i != 1000; ++i) {
677  if (lx_dsp_reg_read(chip, eReg_CSES) & 4) {
678  snd_printd(LXP "ethersound initialized after %dms\n",
679  i);
680  goto ethersound_initialized;
681  }
682  msleep(1);
683  }
685  "ethersound could not be initialized after %dms\n", i);
686  return -ETIMEDOUT;
687 
688  ethersound_initialized:
689  snd_printd(LXP "ethersound initialized\n");
690  return 0;
691 }
692 
693 static int __devinit lx_init_get_version_features(struct lx6464es *chip)
694 {
695  u32 dsp_version;
696 
697  int err;
698 
699  snd_printdd("->lx_init_get_version_features\n");
700 
701  err = lx_dsp_get_version(chip, &dsp_version);
702 
703  if (err == 0) {
704  u32 freq;
705 
706  snd_printk(LXP "DSP version: V%02d.%02d #%d\n",
707  (dsp_version>>16) & 0xff, (dsp_version>>8) & 0xff,
708  dsp_version & 0xff);
709 
710  /* later: what firmware version do we expect? */
711 
712  /* retrieve Play/Rec features */
713  /* done here because we may have to handle alternate
714  * DSP files. */
715  /* later */
716 
717  /* init the EtherSound sample rate */
718  err = lx_dsp_get_clock_frequency(chip, &freq);
719  if (err == 0)
720  chip->board_sample_rate = freq;
721  snd_printd(LXP "actual clock frequency %d\n", freq);
722  } else {
723  snd_printk(KERN_ERR LXP "DSP corrupted \n");
724  err = -EAGAIN;
725  }
726 
727  return err;
728 }
729 
730 static int lx_set_granularity(struct lx6464es *chip, u32 gran)
731 {
732  int err = 0;
733  u32 snapped_gran = MICROBLAZE_IBL_MIN;
734 
735  snd_printdd("->lx_set_granularity\n");
736 
737  /* blocksize is a power of 2 */
738  while ((snapped_gran < gran) &&
739  (snapped_gran < MICROBLAZE_IBL_MAX)) {
740  snapped_gran *= 2;
741  }
742 
743  if (snapped_gran == chip->pcm_granularity)
744  return 0;
745 
746  err = lx_dsp_set_granularity(chip, snapped_gran);
747  if (err < 0) {
748  snd_printk(KERN_WARNING LXP "could not set granularity\n");
749  err = -EAGAIN;
750  }
751 
752  if (snapped_gran != gran)
753  snd_printk(LXP "snapped blocksize to %d\n", snapped_gran);
754 
755  snd_printd(LXP "set blocksize on board %d\n", snapped_gran);
756  chip->pcm_granularity = snapped_gran;
757 
758  return err;
759 }
760 
761 /* initialize and test the xilinx dsp chip */
762 static int __devinit lx_init_dsp(struct lx6464es *chip)
763 {
764  int err;
765  int i;
766 
767  snd_printdd("->lx_init_dsp\n");
768 
769  snd_printd(LXP "initialize board\n");
770  err = lx_init_xilinx_reset(chip);
771  if (err)
772  return err;
773 
774  snd_printd(LXP "testing board\n");
775  err = lx_init_xilinx_test(chip);
776  if (err)
777  return err;
778 
779  snd_printd(LXP "initialize ethersound configuration\n");
780  err = lx_init_ethersound_config(chip);
781  if (err)
782  return err;
783 
784  lx_irq_enable(chip);
785 
788  for (i = 0; i != 1000; ++i) {
789  err = lx_dsp_get_mac(chip);
790  if (err)
791  return err;
792  if (chip->mac_address[0] || chip->mac_address[1] || chip->mac_address[2] ||
793  chip->mac_address[3] || chip->mac_address[4] || chip->mac_address[5])
794  goto mac_ready;
795  msleep(1);
796  }
797  return -ETIMEDOUT;
798 
799 mac_ready:
800  snd_printd(LXP "mac address ready read after: %dms\n", i);
801  snd_printk(LXP "mac address: %02X.%02X.%02X.%02X.%02X.%02X\n",
802  chip->mac_address[0], chip->mac_address[1], chip->mac_address[2],
803  chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);
804 
805  err = lx_init_get_version_features(chip);
806  if (err)
807  return err;
808 
809  lx_set_granularity(chip, MICROBLAZE_IBL_DEFAULT);
810 
811  chip->playback_mute = 0;
812 
813  return err;
814 }
815 
816 static struct snd_pcm_ops lx_ops_playback = {
817  .open = lx_pcm_open,
818  .close = lx_pcm_close,
819  .ioctl = snd_pcm_lib_ioctl,
820  .prepare = lx_pcm_prepare,
821  .hw_params = lx_pcm_hw_params_playback,
822  .hw_free = lx_pcm_hw_free,
823  .trigger = lx_pcm_trigger,
824  .pointer = lx_pcm_stream_pointer,
825 };
826 
827 static struct snd_pcm_ops lx_ops_capture = {
828  .open = lx_pcm_open,
829  .close = lx_pcm_close,
830  .ioctl = snd_pcm_lib_ioctl,
831  .prepare = lx_pcm_prepare,
832  .hw_params = lx_pcm_hw_params_capture,
833  .hw_free = lx_pcm_hw_free,
834  .trigger = lx_pcm_trigger,
835  .pointer = lx_pcm_stream_pointer,
836 };
837 
838 static int __devinit lx_pcm_create(struct lx6464es *chip)
839 {
840  int err;
841  struct snd_pcm *pcm;
842 
843  u32 size = 64 * /* channels */
844  3 * /* 24 bit samples */
845  MAX_STREAM_BUFFER * /* periods */
846  MICROBLAZE_IBL_MAX * /* frames per period */
847  2; /* duplex */
848 
849  size = PAGE_ALIGN(size);
850 
851  /* hardcoded device name & channel count */
852  err = snd_pcm_new(chip->card, (char *)card_name, 0,
853  1, 1, &pcm);
854  if (err < 0)
855  return err;
856 
857  pcm->private_data = chip;
858 
859  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &lx_ops_playback);
860  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &lx_ops_capture);
861 
862  pcm->info_flags = 0;
863  strcpy(pcm->name, card_name);
864 
866  snd_dma_pci_data(chip->pci),
867  size, size);
868  if (err < 0)
869  return err;
870 
871  chip->pcm = pcm;
872  chip->capture_stream.is_capture = 1;
873 
874  return 0;
875 }
876 
877 static int lx_control_playback_info(struct snd_kcontrol *kcontrol,
878  struct snd_ctl_elem_info *uinfo)
879 {
881  uinfo->count = 1;
882  uinfo->value.integer.min = 0;
883  uinfo->value.integer.max = 1;
884  return 0;
885 }
886 
887 static int lx_control_playback_get(struct snd_kcontrol *kcontrol,
888  struct snd_ctl_elem_value *ucontrol)
889 {
890  struct lx6464es *chip = snd_kcontrol_chip(kcontrol);
891  ucontrol->value.integer.value[0] = chip->playback_mute;
892  return 0;
893 }
894 
895 static int lx_control_playback_put(struct snd_kcontrol *kcontrol,
896  struct snd_ctl_elem_value *ucontrol)
897 {
898  struct lx6464es *chip = snd_kcontrol_chip(kcontrol);
899  int changed = 0;
900  int current_value = chip->playback_mute;
901 
902  if (current_value != ucontrol->value.integer.value[0]) {
903  lx_level_unmute(chip, 0, !current_value);
904  chip->playback_mute = !current_value;
905  changed = 1;
906  }
907  return changed;
908 }
909 
910 static struct snd_kcontrol_new lx_control_playback_switch __devinitdata = {
912  .name = "PCM Playback Switch",
913  .index = 0,
915  .private_value = 0,
916  .info = lx_control_playback_info,
917  .get = lx_control_playback_get,
918  .put = lx_control_playback_put
919 };
920 
921 
922 
923 static void lx_proc_levels_read(struct snd_info_entry *entry,
924  struct snd_info_buffer *buffer)
925 {
926  u32 levels[64];
927  int err;
928  int i, j;
929  struct lx6464es *chip = entry->private_data;
930 
931  snd_iprintf(buffer, "capture levels:\n");
932  err = lx_level_peaks(chip, 1, 64, levels);
933  if (err < 0)
934  return;
935 
936  for (i = 0; i != 8; ++i) {
937  for (j = 0; j != 8; ++j)
938  snd_iprintf(buffer, "%08x ", levels[i*8+j]);
939  snd_iprintf(buffer, "\n");
940  }
941 
942  snd_iprintf(buffer, "\nplayback levels:\n");
943 
944  err = lx_level_peaks(chip, 0, 64, levels);
945  if (err < 0)
946  return;
947 
948  for (i = 0; i != 8; ++i) {
949  for (j = 0; j != 8; ++j)
950  snd_iprintf(buffer, "%08x ", levels[i*8+j]);
951  snd_iprintf(buffer, "\n");
952  }
953 
954  snd_iprintf(buffer, "\n");
955 }
956 
957 static int __devinit lx_proc_create(struct snd_card *card, struct lx6464es *chip)
958 {
959  struct snd_info_entry *entry;
960  int err = snd_card_proc_new(card, "levels", &entry);
961  if (err < 0)
962  return err;
963 
964  snd_info_set_text_ops(entry, chip, lx_proc_levels_read);
965  return 0;
966 }
967 
968 
969 static int __devinit snd_lx6464es_create(struct snd_card *card,
970  struct pci_dev *pci,
971  struct lx6464es **rchip)
972 {
973  struct lx6464es *chip;
974  int err;
975 
976  static struct snd_device_ops ops = {
977  .dev_free = snd_lx6464es_dev_free,
978  };
979 
980  snd_printdd("->snd_lx6464es_create\n");
981 
982  *rchip = NULL;
983 
984  /* enable PCI device */
985  err = pci_enable_device(pci);
986  if (err < 0)
987  return err;
988 
989  pci_set_master(pci);
990 
991  /* check if we can restrict PCI DMA transfers to 32 bits */
992  err = pci_set_dma_mask(pci, DMA_BIT_MASK(32));
993  if (err < 0) {
994  snd_printk(KERN_ERR "architecture does not support "
995  "32bit PCI busmaster DMA\n");
996  pci_disable_device(pci);
997  return -ENXIO;
998  }
999 
1000  chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1001  if (chip == NULL) {
1002  err = -ENOMEM;
1003  goto alloc_failed;
1004  }
1005 
1006  chip->card = card;
1007  chip->pci = pci;
1008  chip->irq = -1;
1009 
1010  /* initialize synchronization structs */
1011  spin_lock_init(&chip->lock);
1012  spin_lock_init(&chip->msg_lock);
1013  mutex_init(&chip->setup_mutex);
1014  tasklet_init(&chip->trigger_tasklet, lx_trigger_tasklet,
1015  (unsigned long)chip);
1016  tasklet_init(&chip->tasklet_capture, lx_tasklet_capture,
1017  (unsigned long)chip);
1018  tasklet_init(&chip->tasklet_playback, lx_tasklet_playback,
1019  (unsigned long)chip);
1020 
1021  /* request resources */
1022  err = pci_request_regions(pci, card_name);
1023  if (err < 0)
1024  goto request_regions_failed;
1025 
1026  /* plx port */
1027  chip->port_plx = pci_resource_start(pci, 1);
1028  chip->port_plx_remapped = ioport_map(chip->port_plx,
1029  pci_resource_len(pci, 1));
1030 
1031  /* dsp port */
1032  chip->port_dsp_bar = pci_ioremap_bar(pci, 2);
1033 
1034  err = request_irq(pci->irq, lx_interrupt, IRQF_SHARED,
1035  KBUILD_MODNAME, chip);
1036  if (err) {
1037  snd_printk(KERN_ERR LXP "unable to grab IRQ %d\n", pci->irq);
1038  goto request_irq_failed;
1039  }
1040  chip->irq = pci->irq;
1041 
1042  err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1043  if (err < 0)
1044  goto device_new_failed;
1045 
1046  err = lx_init_dsp(chip);
1047  if (err < 0) {
1048  snd_printk(KERN_ERR LXP "error during DSP initialization\n");
1049  return err;
1050  }
1051 
1052  err = lx_pcm_create(chip);
1053  if (err < 0)
1054  return err;
1055 
1056  err = lx_proc_create(card, chip);
1057  if (err < 0)
1058  return err;
1059 
1060  err = snd_ctl_add(card, snd_ctl_new1(&lx_control_playback_switch,
1061  chip));
1062  if (err < 0)
1063  return err;
1064 
1065  snd_card_set_dev(card, &pci->dev);
1066 
1067  *rchip = chip;
1068  return 0;
1069 
1070 device_new_failed:
1071  free_irq(pci->irq, chip);
1072 
1073 request_irq_failed:
1074  pci_release_regions(pci);
1075 
1076 request_regions_failed:
1077  kfree(chip);
1078 
1079 alloc_failed:
1080  pci_disable_device(pci);
1081 
1082  return err;
1083 }
1084 
1085 static int __devinit snd_lx6464es_probe(struct pci_dev *pci,
1086  const struct pci_device_id *pci_id)
1087 {
1088  static int dev;
1089  struct snd_card *card;
1090  struct lx6464es *chip;
1091  int err;
1092 
1093  snd_printdd("->snd_lx6464es_probe\n");
1094 
1095  if (dev >= SNDRV_CARDS)
1096  return -ENODEV;
1097  if (!enable[dev]) {
1098  dev++;
1099  return -ENOENT;
1100  }
1101 
1102  err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
1103  if (err < 0)
1104  return err;
1105 
1106  err = snd_lx6464es_create(card, pci, &chip);
1107  if (err < 0) {
1108  snd_printk(KERN_ERR LXP "error during snd_lx6464es_create\n");
1109  goto out_free;
1110  }
1111 
1112  strcpy(card->driver, "LX6464ES");
1113  sprintf(card->id, "LX6464ES_%02X%02X%02X",
1114  chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);
1115 
1116  sprintf(card->shortname, "LX6464ES %02X.%02X.%02X.%02X.%02X.%02X",
1117  chip->mac_address[0], chip->mac_address[1], chip->mac_address[2],
1118  chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);
1119 
1120  sprintf(card->longname, "%s at 0x%lx, 0x%p, irq %i",
1121  card->shortname, chip->port_plx,
1122  chip->port_dsp_bar, chip->irq);
1123 
1124  err = snd_card_register(card);
1125  if (err < 0)
1126  goto out_free;
1127 
1128  snd_printdd(LXP "initialization successful\n");
1129  pci_set_drvdata(pci, card);
1130  dev++;
1131  return 0;
1132 
1133 out_free:
1134  snd_card_free(card);
1135  return err;
1136 
1137 }
1138 
1139 static void __devexit snd_lx6464es_remove(struct pci_dev *pci)
1140 {
1141  snd_card_free(pci_get_drvdata(pci));
1142  pci_set_drvdata(pci, NULL);
1143 }
1144 
1145 
1146 static struct pci_driver lx6464es_driver = {
1147  .name = KBUILD_MODNAME,
1148  .id_table = snd_lx6464es_ids,
1149  .probe = snd_lx6464es_probe,
1150  .remove = __devexit_p(snd_lx6464es_remove),
1151 };
1152 
1153 module_pci_driver(lx6464es_driver);