lx6464es.c 27.7 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
/* -*- linux-c -*- *
 *
 * ALSA driver for the digigram lx6464es interface
 *
 * Copyright (c) 2008, 2009 Tim Blechmann <tim@klingt.org>
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/delay.h>
29
#include <linux/slab.h>
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

#include <sound/initval.h>
#include <sound/control.h>
#include <sound/info.h>

#include "lx6464es.h"

MODULE_AUTHOR("Tim Blechmann");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("digigram lx6464es");
MODULE_SUPPORTED_DEVICE("{digigram lx6464es{}}");


static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
45
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
46

47
48
49
50
51
52
53
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Digigram LX6464ES interface.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for  Digigram LX6464ES interface.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable/disable specific Digigram LX6464ES soundcards.");

54
55
56
57
58
static const char card_name[] = "LX6464ES";


#define PCI_DEVICE_ID_PLX_LX6464ES		PCI_DEVICE_ID_PLX_9056

59
static const struct pci_device_id snd_lx6464es_ids[] = {
60
61
62
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES,
			 PCI_VENDOR_ID_DIGIGRAM,
			 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_SERIAL_SUBSYSTEM),
63
	},			/* LX6464ES */
64
65
66
	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES,
			 PCI_VENDOR_ID_DIGIGRAM,
			 PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_CAE_SERIAL_SUBSYSTEM),
67
68
69
70
71
72
73
74
75
76
77
78
79
	},			/* LX6464ES-CAE */
	{ 0, },
};

MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids);



/* PGO pour USERo dans le registre pci_0x06/loc_0xEC */
#define CHIPSC_RESET_XILINX (1L<<16)


/* alsa callbacks */
80
static const struct snd_pcm_hardware lx_caps = {
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
	.info             = (SNDRV_PCM_INFO_MMAP |
			     SNDRV_PCM_INFO_INTERLEAVED |
			     SNDRV_PCM_INFO_MMAP_VALID |
			     SNDRV_PCM_INFO_SYNC_START),
	.formats	  = (SNDRV_PCM_FMTBIT_S16_LE |
			     SNDRV_PCM_FMTBIT_S16_BE |
			     SNDRV_PCM_FMTBIT_S24_3LE |
			     SNDRV_PCM_FMTBIT_S24_3BE),
	.rates            = (SNDRV_PCM_RATE_CONTINUOUS |
			     SNDRV_PCM_RATE_8000_192000),
	.rate_min         = 8000,
	.rate_max         = 192000,
	.channels_min     = 2,
	.channels_max     = 64,
	.buffer_bytes_max = 64*2*3*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER,
	.period_bytes_min = (2*2*MICROBLAZE_IBL_MIN*2),
	.period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER),
	.periods_min      = 2,
	.periods_max      = MAX_STREAM_BUFFER,
};

static int lx_set_granularity(struct lx6464es *chip, u32 gran);


static int lx_hardware_open(struct lx6464es *chip,
			    struct snd_pcm_substream *substream)
{
	int err = 0;
	struct snd_pcm_runtime *runtime = substream->runtime;
	int channels = runtime->channels;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

	snd_pcm_uframes_t period_size = runtime->period_size;

115
	dev_dbg(chip->card->dev, "allocating pipe for %d channels\n", channels);
116
117
	err = lx_pipe_allocate(chip, 0, is_capture, channels);
	if (err < 0) {
118
		dev_err(chip->card->dev, LXP "allocating pipe failed\n");
119
120
121
122
123
		return err;
	}

	err = lx_set_granularity(chip, period_size);
	if (err < 0) {
124
		dev_err(chip->card->dev, "setting granularity to %ld failed\n",
125
126
127
128
129
130
131
132
133
134
135
136
137
138
			   period_size);
		return err;
	}

	return 0;
}

static int lx_hardware_start(struct lx6464es *chip,
			     struct snd_pcm_substream *substream)
{
	int err = 0;
	struct snd_pcm_runtime *runtime = substream->runtime;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

139
	dev_dbg(chip->card->dev, "setting stream format\n");
140
141
	err = lx_stream_set_format(chip, runtime, 0, is_capture);
	if (err < 0) {
142
		dev_err(chip->card->dev, "setting stream format failed\n");
143
144
145
		return err;
	}

146
	dev_dbg(chip->card->dev, "starting pipe\n");
147
148
	err = lx_pipe_start(chip, 0, is_capture);
	if (err < 0) {
149
		dev_err(chip->card->dev, "starting pipe failed\n");
150
151
152
		return err;
	}

153
	dev_dbg(chip->card->dev, "waiting for pipe to start\n");
154
155
	err = lx_pipe_wait_for_start(chip, 0, is_capture);
	if (err < 0) {
156
		dev_err(chip->card->dev, "waiting for pipe failed\n");
157
158
159
160
161
162
163
164
165
166
167
168
169
		return err;
	}

	return err;
}


static int lx_hardware_stop(struct lx6464es *chip,
			    struct snd_pcm_substream *substream)
{
	int err = 0;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

170
	dev_dbg(chip->card->dev, "pausing pipe\n");
171
172
	err = lx_pipe_pause(chip, 0, is_capture);
	if (err < 0) {
173
		dev_err(chip->card->dev, "pausing pipe failed\n");
174
175
176
		return err;
	}

177
	dev_dbg(chip->card->dev, "waiting for pipe to become idle\n");
178
179
	err = lx_pipe_wait_for_idle(chip, 0, is_capture);
	if (err < 0) {
180
		dev_err(chip->card->dev, "waiting for pipe failed\n");
181
182
183
		return err;
	}

184
	dev_dbg(chip->card->dev, "stopping pipe\n");
185
186
	err = lx_pipe_stop(chip, 0, is_capture);
	if (err < 0) {
187
		dev_err(chip->card->dev, "stopping pipe failed\n");
188
189
190
191
192
193
194
195
196
197
198
199
200
		return err;
	}

	return err;
}


static int lx_hardware_close(struct lx6464es *chip,
			     struct snd_pcm_substream *substream)
{
	int err = 0;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

201
	dev_dbg(chip->card->dev, "releasing pipe\n");
202
203
	err = lx_pipe_release(chip, 0, is_capture);
	if (err < 0) {
204
		dev_err(chip->card->dev, "releasing pipe failed\n");
205
206
207
208
209
210
211
212
213
214
215
216
217
218
		return err;
	}

	return err;
}


static int lx_pcm_open(struct snd_pcm_substream *substream)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	int err = 0;
	int board_rate;

219
	dev_dbg(chip->card->dev, "->lx_pcm_open\n");
220
221
222
223
224
225
226
227
228
229
	mutex_lock(&chip->setup_mutex);

	/* copy the struct snd_pcm_hardware struct */
	runtime->hw = lx_caps;

#if 0
	/* buffer-size should better be multiple of period-size */
	err = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);
	if (err < 0) {
230
		dev_warn(chip->card->dev, "could not constrain periods\n");
231
232
233
234
235
236
		goto exit;
	}
#endif

	/* the clock rate cannot be changed */
	board_rate = chip->board_sample_rate;
237
238
	err = snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_RATE,
					   board_rate);
239
240

	if (err < 0) {
241
		dev_warn(chip->card->dev, "could not constrain periods\n");
242
243
244
245
246
247
248
249
250
		goto exit;
	}

	/* constrain period size */
	err = snd_pcm_hw_constraint_minmax(runtime,
					   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
					   MICROBLAZE_IBL_MIN,
					   MICROBLAZE_IBL_MAX);
	if (err < 0) {
251
		dev_warn(chip->card->dev,
252
253
254
255
256
257
258
259
260
261
262
263
264
265
			   "could not constrain period size\n");
		goto exit;
	}

	snd_pcm_hw_constraint_step(runtime, 0,
				   SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32);

	snd_pcm_set_sync(substream);
	err = 0;

exit:
	runtime->private_data = chip;

	mutex_unlock(&chip->setup_mutex);
266
	dev_dbg(chip->card->dev, "<-lx_pcm_open, %d\n", err);
267
268
269
270
271
272
	return err;
}

static int lx_pcm_close(struct snd_pcm_substream *substream)
{
	int err = 0;
273
	dev_dbg(substream->pcm->card->dev, "->lx_pcm_close\n");
274
275
276
277
278
279
280
281
282
283
284
285
286
	return err;
}

static snd_pcm_uframes_t lx_pcm_stream_pointer(struct snd_pcm_substream
					       *substream)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	snd_pcm_uframes_t pos;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

	struct lx_stream *lx_stream = is_capture ? &chip->capture_stream :
		&chip->playback_stream;

287
	dev_dbg(chip->card->dev, "->lx_pcm_stream_pointer\n");
288

289
	mutex_lock(&chip->lock);
290
	pos = lx_stream->frame_pos * substream->runtime->period_size;
291
	mutex_unlock(&chip->lock);
292

293
	dev_dbg(chip->card->dev, "stream_pointer at %ld\n", pos);
294
295
296
297
298
299
300
301
302
	return pos;
}

static int lx_pcm_prepare(struct snd_pcm_substream *substream)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	int err = 0;
	const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

303
	dev_dbg(chip->card->dev, "->lx_pcm_prepare\n");
304
305
306
307
308
309

	mutex_lock(&chip->setup_mutex);

	if (chip->hardware_running[is_capture]) {
		err = lx_hardware_stop(chip, substream);
		if (err < 0) {
310
			dev_err(chip->card->dev, "failed to stop hardware. "
311
312
313
314
315
316
				   "Error code %d\n", err);
			goto exit;
		}

		err = lx_hardware_close(chip, substream);
		if (err < 0) {
317
			dev_err(chip->card->dev, "failed to close hardware. "
318
319
320
321
322
				   "Error code %d\n", err);
			goto exit;
		}
	}

323
	dev_dbg(chip->card->dev, "opening hardware\n");
324
325
	err = lx_hardware_open(chip, substream);
	if (err < 0) {
326
		dev_err(chip->card->dev, "failed to open hardware. "
327
328
329
330
331
332
			   "Error code %d\n", err);
		goto exit;
	}

	err = lx_hardware_start(chip, substream);
	if (err < 0) {
333
		dev_err(chip->card->dev, "failed to start hardware. "
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
			   "Error code %d\n", err);
		goto exit;
	}

	chip->hardware_running[is_capture] = 1;

	if (chip->board_sample_rate != substream->runtime->rate) {
		if (!err)
			chip->board_sample_rate = substream->runtime->rate;
	}

exit:
	mutex_unlock(&chip->setup_mutex);
	return err;
}

static int lx_pcm_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *hw_params, int is_capture)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	int err = 0;

356
	dev_dbg(chip->card->dev, "->lx_pcm_hw_params\n");
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390

	mutex_lock(&chip->setup_mutex);

	/* set dma buffer */
	err = snd_pcm_lib_malloc_pages(substream,
				       params_buffer_bytes(hw_params));

	if (is_capture)
		chip->capture_stream.stream = substream;
	else
		chip->playback_stream.stream = substream;

	mutex_unlock(&chip->setup_mutex);
	return err;
}

static int lx_pcm_hw_params_playback(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *hw_params)
{
	return lx_pcm_hw_params(substream, hw_params, 0);
}

static int lx_pcm_hw_params_capture(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *hw_params)
{
	return lx_pcm_hw_params(substream, hw_params, 1);
}

static int lx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	int err = 0;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

391
	dev_dbg(chip->card->dev, "->lx_pcm_hw_free\n");
392
393
394
395
396
	mutex_lock(&chip->setup_mutex);

	if (chip->hardware_running[is_capture]) {
		err = lx_hardware_stop(chip, substream);
		if (err < 0) {
397
			dev_err(chip->card->dev, "failed to stop hardware. "
398
399
400
401
402
403
				   "Error code %d\n", err);
			goto exit;
		}

		err = lx_hardware_close(chip, substream);
		if (err < 0) {
404
			dev_err(chip->card->dev, "failed to close hardware. "
405
406
407
408
409
410
411
412
413
414
				   "Error code %d\n", err);
			goto exit;
		}

		chip->hardware_running[is_capture] = 0;
	}

	err = snd_pcm_lib_free_pages(substream);

	if (is_capture)
415
		chip->capture_stream.stream = NULL;
416
	else
417
		chip->playback_stream.stream = NULL;
418
419
420
421
422
423
424
425
426

exit:
	mutex_unlock(&chip->setup_mutex);
	return err;
}

static void lx_trigger_start(struct lx6464es *chip, struct lx_stream *lx_stream)
{
	struct snd_pcm_substream *substream = lx_stream->stream;
427
	const unsigned int is_capture = lx_stream->is_capture;
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447

	int err;

	const u32 channels = substream->runtime->channels;
	const u32 bytes_per_frame = channels * 3;
	const u32 period_size = substream->runtime->period_size;
	const u32 periods = substream->runtime->periods;
	const u32 period_bytes = period_size * bytes_per_frame;

	dma_addr_t buf = substream->dma_buffer.addr;
	int i;

	u32 needed, freed;
	u32 size_array[5];

	for (i = 0; i != periods; ++i) {
		u32 buffer_index = 0;

		err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed,
				    size_array);
448
		dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n",
449
450
451
452
453
454
			    needed, freed);

		err = lx_buffer_give(chip, 0, is_capture, period_bytes,
				     lower_32_bits(buf), upper_32_bits(buf),
				     &buffer_index);

455
		dev_dbg(chip->card->dev, "starting: buffer index %x on 0x%lx (%d bytes)\n",
456
			    buffer_index, (unsigned long)buf, period_bytes);
457
458
459
460
		buf += period_bytes;
	}

	err = lx_buffer_ask(chip, 0, is_capture, &needed, &freed, size_array);
461
	dev_dbg(chip->card->dev, "starting: needed %d, freed %d\n", needed, freed);
462

463
	dev_dbg(chip->card->dev, "starting: starting stream\n");
464
465
	err = lx_stream_start(chip, 0, is_capture);
	if (err < 0)
466
		dev_err(chip->card->dev, "couldn't start stream\n");
467
468
469
470
471
472
473
474
	else
		lx_stream->status = LX_STREAM_STATUS_RUNNING;

	lx_stream->frame_pos = 0;
}

static void lx_trigger_stop(struct lx6464es *chip, struct lx_stream *lx_stream)
{
475
	const unsigned int is_capture = lx_stream->is_capture;
476
477
	int err;

478
	dev_dbg(chip->card->dev, "stopping: stopping stream\n");
479
480
	err = lx_stream_stop(chip, 0, is_capture);
	if (err < 0)
481
		dev_err(chip->card->dev, "couldn't stop stream\n");
482
483
484
485
486
	else
		lx_stream->status = LX_STREAM_STATUS_FREE;

}

487
488
static void lx_trigger_dispatch_stream(struct lx6464es *chip,
				       struct lx_stream *lx_stream)
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
{
	switch (lx_stream->status) {
	case LX_STREAM_STATUS_SCHEDULE_RUN:
		lx_trigger_start(chip, lx_stream);
		break;

	case LX_STREAM_STATUS_SCHEDULE_STOP:
		lx_trigger_stop(chip, lx_stream);
		break;

	default:
		break;
	}
}

static int lx_pcm_trigger_dispatch(struct lx6464es *chip,
				   struct lx_stream *lx_stream, int cmd)
{
	int err = 0;

509
	mutex_lock(&chip->lock);
510
511
512
513
514
515
516
517
518
519
520
521
522
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		lx_stream->status = LX_STREAM_STATUS_SCHEDULE_RUN;
		break;

	case SNDRV_PCM_TRIGGER_STOP:
		lx_stream->status = LX_STREAM_STATUS_SCHEDULE_STOP;
		break;

	default:
		err = -EINVAL;
		goto exit;
	}
523
524
525

	lx_trigger_dispatch_stream(chip, &chip->capture_stream);
	lx_trigger_dispatch_stream(chip, &chip->playback_stream);
526
527

exit:
528
	mutex_unlock(&chip->lock);
529
530
531
532
533
534
535
536
537
538
539
	return err;
}


static int lx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	const int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
	struct lx_stream *stream = is_capture ? &chip->capture_stream :
		&chip->playback_stream;

540
	dev_dbg(chip->card->dev, "->lx_pcm_trigger\n");
541
542
543
544
545
546

	return lx_pcm_trigger_dispatch(chip, stream, cmd);
}

static int snd_lx6464es_free(struct lx6464es *chip)
{
547
	dev_dbg(chip->card->dev, "->snd_lx6464es_free\n");
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570

	lx_irq_disable(chip);

	if (chip->irq >= 0)
		free_irq(chip->irq, chip);

	iounmap(chip->port_dsp_bar);
	ioport_unmap(chip->port_plx_remapped);

	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);

	kfree(chip);

	return 0;
}

static int snd_lx6464es_dev_free(struct snd_device *device)
{
	return snd_lx6464es_free(device->device_data);
}

/* reset the dsp during initialization */
571
static int lx_init_xilinx_reset(struct lx6464es *chip)
572
573
574
575
{
	int i;
	u32 plx_reg = lx_plx_reg_read(chip, ePLX_CHIPSC);

576
	dev_dbg(chip->card->dev, "->lx_init_xilinx_reset\n");
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595

	/* activate reset of xilinx */
	plx_reg &= ~CHIPSC_RESET_XILINX;

	lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg);
	msleep(1);

	lx_plx_reg_write(chip, ePLX_MBOX3, 0);
	msleep(1);

	plx_reg |= CHIPSC_RESET_XILINX;
	lx_plx_reg_write(chip, ePLX_CHIPSC, plx_reg);

	/* deactivate reset of xilinx */
	for (i = 0; i != 100; ++i) {
		u32 reg_mbox3;
		msleep(10);
		reg_mbox3 = lx_plx_reg_read(chip, ePLX_MBOX3);
		if (reg_mbox3) {
596
597
			dev_dbg(chip->card->dev, "xilinx reset done\n");
			dev_dbg(chip->card->dev, "xilinx took %d loops\n", i);
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
			break;
		}
	}

	/* todo: add some error handling? */

	/* clear mr */
	lx_dsp_reg_write(chip, eReg_CSM, 0);

	/* le xilinx ES peut ne pas etre encore pret, on attend. */
	msleep(600);

	return 0;
}

613
static int lx_init_xilinx_test(struct lx6464es *chip)
614
615
616
{
	u32 reg;

617
	dev_dbg(chip->card->dev, "->lx_init_xilinx_test\n");
618
619
620
621
622
623
624

	/* TEST if we have access to Xilinx/MicroBlaze */
	lx_dsp_reg_write(chip, eReg_CSM, 0);

	reg = lx_dsp_reg_read(chip, eReg_CSM);

	if (reg) {
625
		dev_err(chip->card->dev, "Problem: Reg_CSM %x.\n", reg);
626
627
628
629
630
631

		/* PCI9056_SPACE0_REMAP */
		lx_plx_reg_write(chip, ePLX_PCICR, 1);

		reg = lx_dsp_reg_read(chip, eReg_CSM);
		if (reg) {
632
			dev_err(chip->card->dev, "Error: Reg_CSM %x.\n", reg);
633
634
635
636
			return -EAGAIN; /* seems to be appropriate */
		}
	}

637
	dev_dbg(chip->card->dev, "Xilinx/MicroBlaze access test successful\n");
638
639
640
641
642

	return 0;
}

/* initialize ethersound */
643
static int lx_init_ethersound_config(struct lx6464es *chip)
644
645
646
647
{
	int i;
	u32 orig_conf_es = lx_dsp_reg_read(chip, eReg_CONFES);

648
649
	/* configure 64 io channels */
	u32 conf_es = (orig_conf_es & CONFES_READ_PART_MASK) |
650
		(64 << IOCR_INPUTS_OFFSET) |
651
		(64 << IOCR_OUTPUTS_OFFSET) |
652
653
		(FREQ_RATIO_SINGLE_MODE << FREQ_RATIO_OFFSET);

654
	dev_dbg(chip->card->dev, "->lx_init_ethersound\n");
655
656
657
658
659
660
661
662
663
664
665
666
667

	chip->freq_ratio = FREQ_RATIO_SINGLE_MODE;

	/*
	 * write it to the card !
	 * this actually kicks the ES xilinx, the first time since poweron.
	 * the MAC address in the Reg_ADMACESMSB Reg_ADMACESLSB registers
	 * is not ready before this is done, and the bit 2 in Reg_CSES is set.
	 * */
	lx_dsp_reg_write(chip, eReg_CONFES, conf_es);

	for (i = 0; i != 1000; ++i) {
		if (lx_dsp_reg_read(chip, eReg_CSES) & 4) {
668
			dev_dbg(chip->card->dev, "ethersound initialized after %dms\n",
669
670
671
672
673
				   i);
			goto ethersound_initialized;
		}
		msleep(1);
	}
674
	dev_warn(chip->card->dev,
675
676
677
678
		   "ethersound could not be initialized after %dms\n", i);
	return -ETIMEDOUT;

 ethersound_initialized:
679
	dev_dbg(chip->card->dev, "ethersound initialized\n");
680
681
682
	return 0;
}

683
static int lx_init_get_version_features(struct lx6464es *chip)
684
685
686
687
688
{
	u32 dsp_version;

	int err;

689
	dev_dbg(chip->card->dev, "->lx_init_get_version_features\n");
690
691
692
693
694
695

	err = lx_dsp_get_version(chip, &dsp_version);

	if (err == 0) {
		u32 freq;

696
		dev_info(chip->card->dev, "DSP version: V%02d.%02d #%d\n",
697
698
699
700
701
702
703
704
705
706
707
708
709
710
			   (dsp_version>>16) & 0xff, (dsp_version>>8) & 0xff,
			   dsp_version & 0xff);

		/* later: what firmware version do we expect? */

		/* retrieve Play/Rec features */
		/* done here because we may have to handle alternate
		 * DSP files. */
		/* later */

		/* init the EtherSound sample rate */
		err = lx_dsp_get_clock_frequency(chip, &freq);
		if (err == 0)
			chip->board_sample_rate = freq;
711
		dev_dbg(chip->card->dev, "actual clock frequency %d\n", freq);
712
	} else {
713
		dev_err(chip->card->dev, "DSP corrupted \n");
714
715
716
717
718
719
720
721
722
723
724
		err = -EAGAIN;
	}

	return err;
}

static int lx_set_granularity(struct lx6464es *chip, u32 gran)
{
	int err = 0;
	u32 snapped_gran = MICROBLAZE_IBL_MIN;

725
	dev_dbg(chip->card->dev, "->lx_set_granularity\n");
726
727
728
729
730
731
732
733
734
735
736
737

	/* blocksize is a power of 2 */
	while ((snapped_gran < gran) &&
	       (snapped_gran < MICROBLAZE_IBL_MAX)) {
		snapped_gran *= 2;
	}

	if (snapped_gran == chip->pcm_granularity)
		return 0;

	err = lx_dsp_set_granularity(chip, snapped_gran);
	if (err < 0) {
738
		dev_warn(chip->card->dev, "could not set granularity\n");
739
740
741
742
		err = -EAGAIN;
	}

	if (snapped_gran != gran)
743
		dev_err(chip->card->dev, "snapped blocksize to %d\n", snapped_gran);
744

745
	dev_dbg(chip->card->dev, "set blocksize on board %d\n", snapped_gran);
746
747
748
749
750
751
	chip->pcm_granularity = snapped_gran;

	return err;
}

/* initialize and test the xilinx dsp chip */
752
static int lx_init_dsp(struct lx6464es *chip)
753
754
755
756
{
	int err;
	int i;

757
	dev_dbg(chip->card->dev, "->lx_init_dsp\n");
758

759
	dev_dbg(chip->card->dev, "initialize board\n");
760
761
762
763
	err = lx_init_xilinx_reset(chip);
	if (err)
		return err;

764
	dev_dbg(chip->card->dev, "testing board\n");
765
766
767
768
	err = lx_init_xilinx_test(chip);
	if (err)
		return err;

769
	dev_dbg(chip->card->dev, "initialize ethersound configuration\n");
770
771
772
773
774
775
776
777
778
	err = lx_init_ethersound_config(chip);
	if (err)
		return err;

	lx_irq_enable(chip);

	/** \todo the mac address should be ready by not, but it isn't,
	 *  so we wait for it */
	for (i = 0; i != 1000; ++i) {
779
		err = lx_dsp_get_mac(chip);
780
781
		if (err)
			return err;
782
783
		if (chip->mac_address[0] || chip->mac_address[1] || chip->mac_address[2] ||
		    chip->mac_address[3] || chip->mac_address[4] || chip->mac_address[5])
784
785
786
787
788
789
			goto mac_ready;
		msleep(1);
	}
	return -ETIMEDOUT;

mac_ready:
790
791
792
	dev_dbg(chip->card->dev, "mac address ready read after: %dms\n", i);
	dev_info(chip->card->dev,
		 "mac address: %02X.%02X.%02X.%02X.%02X.%02X\n",
793
794
		   chip->mac_address[0], chip->mac_address[1], chip->mac_address[2],
		   chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);
795
796
797
798
799
800
801
802
803
804
805
806

	err = lx_init_get_version_features(chip);
	if (err)
		return err;

	lx_set_granularity(chip, MICROBLAZE_IBL_DEFAULT);

	chip->playback_mute = 0;

	return err;
}

807
static const struct snd_pcm_ops lx_ops_playback = {
808
809
810
811
812
813
814
815
816
817
	.open      = lx_pcm_open,
	.close     = lx_pcm_close,
	.ioctl     = snd_pcm_lib_ioctl,
	.prepare   = lx_pcm_prepare,
	.hw_params = lx_pcm_hw_params_playback,
	.hw_free   = lx_pcm_hw_free,
	.trigger   = lx_pcm_trigger,
	.pointer   = lx_pcm_stream_pointer,
};

818
static const struct snd_pcm_ops lx_ops_capture = {
819
820
821
822
823
824
825
826
827
828
	.open      = lx_pcm_open,
	.close     = lx_pcm_close,
	.ioctl     = snd_pcm_lib_ioctl,
	.prepare   = lx_pcm_prepare,
	.hw_params = lx_pcm_hw_params_capture,
	.hw_free   = lx_pcm_hw_free,
	.trigger   = lx_pcm_trigger,
	.pointer   = lx_pcm_stream_pointer,
};

829
static int lx_pcm_create(struct lx6464es *chip)
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
{
	int err;
	struct snd_pcm *pcm;

	u32 size = 64 *		     /* channels */
		3 *		     /* 24 bit samples */
		MAX_STREAM_BUFFER *  /* periods */
		MICROBLAZE_IBL_MAX * /* frames per period */
		2;		     /* duplex */

	size = PAGE_ALIGN(size);

	/* hardcoded device name & channel count */
	err = snd_pcm_new(chip->card, (char *)card_name, 0,
			  1, 1, &pcm);
845
846
	if (err < 0)
		return err;
847
848
849
850
851
852
853

	pcm->private_data = chip;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &lx_ops_playback);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &lx_ops_capture);

	pcm->info_flags = 0;
854
	pcm->nonatomic = true;
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
	strcpy(pcm->name, card_name);

	err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
						    snd_dma_pci_data(chip->pci),
						    size, size);
	if (err < 0)
		return err;

	chip->pcm = pcm;
	chip->capture_stream.is_capture = 1;

	return 0;
}

static int lx_control_playback_info(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int lx_control_playback_get(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct lx6464es *chip = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = chip->playback_mute;
	return 0;
}

static int lx_control_playback_put(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct lx6464es *chip = snd_kcontrol_chip(kcontrol);
	int changed = 0;
	int current_value = chip->playback_mute;

	if (current_value != ucontrol->value.integer.value[0]) {
		lx_level_unmute(chip, 0, !current_value);
		chip->playback_mute = !current_value;
		changed = 1;
	}
	return changed;
}

902
static const struct snd_kcontrol_new lx_control_playback_switch = {
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "PCM Playback Switch",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.private_value = 0,
	.info = lx_control_playback_info,
	.get = lx_control_playback_get,
	.put = lx_control_playback_put
};



static void lx_proc_levels_read(struct snd_info_entry *entry,
				struct snd_info_buffer *buffer)
{
	u32 levels[64];
	int err;
	int i, j;
	struct lx6464es *chip = entry->private_data;

	snd_iprintf(buffer, "capture levels:\n");
	err = lx_level_peaks(chip, 1, 64, levels);
	if (err < 0)
		return;

	for (i = 0; i != 8; ++i) {
		for (j = 0; j != 8; ++j)
			snd_iprintf(buffer, "%08x ", levels[i*8+j]);
		snd_iprintf(buffer, "\n");
	}

	snd_iprintf(buffer, "\nplayback levels:\n");

	err = lx_level_peaks(chip, 0, 64, levels);
	if (err < 0)
		return;

	for (i = 0; i != 8; ++i) {
		for (j = 0; j != 8; ++j)
			snd_iprintf(buffer, "%08x ", levels[i*8+j]);
		snd_iprintf(buffer, "\n");
	}

	snd_iprintf(buffer, "\n");
}

949
static int lx_proc_create(struct snd_card *card, struct lx6464es *chip)
950
951
952
953
954
955
956
957
958
959
960
{
	struct snd_info_entry *entry;
	int err = snd_card_proc_new(card, "levels", &entry);
	if (err < 0)
		return err;

	snd_info_set_text_ops(entry, chip, lx_proc_levels_read);
	return 0;
}


961
962
963
static int snd_lx6464es_create(struct snd_card *card,
			       struct pci_dev *pci,
			       struct lx6464es **rchip)
964
965
966
967
968
969
970
971
{
	struct lx6464es *chip;
	int err;

	static struct snd_device_ops ops = {
		.dev_free = snd_lx6464es_dev_free,
	};

972
	dev_dbg(card->dev, "->snd_lx6464es_create\n");
973
974
975
976
977
978
979
980
981
982
983

	*rchip = NULL;

	/* enable PCI device */
	err = pci_enable_device(pci);
	if (err < 0)
		return err;

	pci_set_master(pci);

	/* check if we can restrict PCI DMA transfers to 32 bits */
984
	err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
985
	if (err < 0) {
986
987
		dev_err(card->dev,
			"architecture does not support 32bit PCI busmaster DMA\n");
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
		pci_disable_device(pci);
		return -ENXIO;
	}

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (chip == NULL) {
		err = -ENOMEM;
		goto alloc_failed;
	}

	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;

	/* initialize synchronization structs */
1003
1004
	mutex_init(&chip->lock);
	mutex_init(&chip->msg_lock);
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
	mutex_init(&chip->setup_mutex);

	/* request resources */
	err = pci_request_regions(pci, card_name);
	if (err < 0)
		goto request_regions_failed;

	/* plx port */
	chip->port_plx = pci_resource_start(pci, 1);
	chip->port_plx_remapped = ioport_map(chip->port_plx,
					     pci_resource_len(pci, 1));

	/* dsp port */
	chip->port_dsp_bar = pci_ioremap_bar(pci, 2);
1019
1020
1021
1022
	if (!chip->port_dsp_bar) {
		dev_err(card->dev, "cannot remap PCI memory region\n");
		goto remap_pci_failed;
	}
1023

1024
1025
	err = request_threaded_irq(pci->irq, lx_interrupt, lx_threaded_irq,
				   IRQF_SHARED, KBUILD_MODNAME, chip);
1026
	if (err) {
1027
		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
		goto request_irq_failed;
	}
	chip->irq = pci->irq;

	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
	if (err < 0)
		goto device_new_failed;

	err = lx_init_dsp(chip);
	if (err < 0) {
1038
		dev_err(card->dev, "error during DSP initialization\n");
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
		return err;
	}

	err = lx_pcm_create(chip);
	if (err < 0)
		return err;

	err = lx_proc_create(card, chip);
	if (err < 0)
		return err;

	err = snd_ctl_add(card, snd_ctl_new1(&lx_control_playback_switch,
					     chip));
	if (err < 0)
		return err;

	*rchip = chip;
	return 0;

device_new_failed:
	free_irq(pci->irq, chip);

request_irq_failed:
1062
1063
1064
	iounmap(chip->port_dsp_bar);

remap_pci_failed:
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
	pci_release_regions(pci);

request_regions_failed:
	kfree(chip);

alloc_failed:
	pci_disable_device(pci);

	return err;
}

1076
1077
static int snd_lx6464es_probe(struct pci_dev *pci,
			      const struct pci_device_id *pci_id)
1078
1079
1080
1081
1082
1083
{
	static int dev;
	struct snd_card *card;
	struct lx6464es *chip;
	int err;

1084
	dev_dbg(&pci->dev, "->snd_lx6464es_probe\n");
1085
1086
1087
1088
1089
1090
1091
1092

	if (dev >= SNDRV_CARDS)
		return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}

1093
1094
	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
			   0, &card);
1095
1096
	if (err < 0)
		return err;
1097
1098
1099

	err = snd_lx6464es_create(card, pci, &chip);
	if (err < 0) {
1100
		dev_err(card->dev, "error during snd_lx6464es_create\n");
1101
1102
1103
		goto out_free;
	}

1104
1105
1106
1107
1108
1109
1110
1111
	strcpy(card->driver, "LX6464ES");
	sprintf(card->id, "LX6464ES_%02X%02X%02X",
		chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);

	sprintf(card->shortname, "LX6464ES %02X.%02X.%02X.%02X.%02X.%02X",
		chip->mac_address[0], chip->mac_address[1], chip->mac_address[2],
		chip->mac_address[3], chip->mac_address[4], chip->mac_address[5]);

1112
1113
1114
1115
1116
1117
1118
1119
	sprintf(card->longname, "%s at 0x%lx, 0x%p, irq %i",
		card->shortname, chip->port_plx,
		chip->port_dsp_bar, chip->irq);

	err = snd_card_register(card);
	if (err < 0)
		goto out_free;

1120
	dev_dbg(chip->card->dev, "initialization successful\n");
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
	pci_set_drvdata(pci, card);
	dev++;
	return 0;

out_free:
	snd_card_free(card);
	return err;

}

1131
static void snd_lx6464es_remove(struct pci_dev *pci)
1132
1133
1134
1135
1136
{
	snd_card_free(pci_get_drvdata(pci));
}


1137
static struct pci_driver lx6464es_driver = {
1138
	.name =     KBUILD_MODNAME,
1139
1140
	.id_table = snd_lx6464es_ids,
	.probe =    snd_lx6464es_probe,
1141
	.remove = snd_lx6464es_remove,
1142
1143
};

1144
module_pci_driver(lx6464es_driver);