summaryrefslogtreecommitdiffstats
path: root/sound/pci/lola/lola.c
blob: 5269a1d396a5bfe48cec1f2d3be5a426c5c3ac03 (plain)
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
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
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Support for Digigram Lola PCI-e boards
 *
 *  Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include "lola.h"

/* Standard options */
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Digigram Lola driver.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Digigram Lola driver.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Digigram Lola driver.");

/* Lola-specific options */

/* for instance use always max granularity which is compatible
 * with all sample rates
 */
static int granularity[SNDRV_CARDS] = {
	[0 ... (SNDRV_CARDS - 1)] = LOLA_GRANULARITY_MAX
};

/* below a sample_rate of 16kHz the analogue audio quality is NOT excellent */
static int sample_rate_min[SNDRV_CARDS] = {
	[0 ... (SNDRV_CARDS - 1) ] = 16000
};

module_param_array(granularity, int, NULL, 0444);
MODULE_PARM_DESC(granularity, "Granularity value");
module_param_array(sample_rate_min, int, NULL, 0444);
MODULE_PARM_DESC(sample_rate_min, "Minimal sample rate");

/*
 */

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Digigram Lola driver");
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");

#ifdef CONFIG_SND_DEBUG_VERBOSE
static int debug;
module_param(debug, int, 0644);
#define verbose_debug(fmt, args...)			\
	do { if (debug > 1) pr_debug(SFX fmt, ##args); } while (0)
#else
#define verbose_debug(fmt, args...)
#endif

/*
 * pseudo-codec read/write via CORB/RIRB
 */

static int corb_send_verb(struct lola *chip, unsigned int nid,
			  unsigned int verb, unsigned int data,
			  unsigned int extdata)
{
	unsigned long flags;
	int ret = -EIO;

	chip->last_cmd_nid = nid;
	chip->last_verb = verb;
	chip->last_data = data;
	chip->last_extdata = extdata;
	data |= (nid << 20) | (verb << 8);

	spin_lock_irqsave(&chip->reg_lock, flags);
	if (chip->rirb.cmds < LOLA_CORB_ENTRIES - 1) {
		unsigned int wp = chip->corb.wp + 1;
		wp %= LOLA_CORB_ENTRIES;
		chip->corb.wp = wp;
		chip->corb.buf[wp * 2] = cpu_to_le32(data);
		chip->corb.buf[wp * 2 + 1] = cpu_to_le32(extdata);
		lola_writew(chip, BAR0, CORBWP, wp);
		chip->rirb.cmds++;
		smp_wmb();
		ret = 0;
	}
	spin_unlock_irqrestore(&chip->reg_lock, flags);
	return ret;
}

static void lola_queue_unsol_event(struct lola *chip, unsigned int res,
				   unsigned int res_ex)
{
	lola_update_ext_clock_freq(chip, res);
}

/* retrieve RIRB entry - called from interrupt handler */
static void lola_update_rirb(struct lola *chip)
{
	unsigned int rp, wp;
	u32 res, res_ex;

	wp = lola_readw(chip, BAR0, RIRBWP);
	if (wp == chip->rirb.wp)
		return;
	chip->rirb.wp = wp;

	while (chip->rirb.rp != wp) {
		chip->rirb.rp++;
		chip->rirb.rp %= LOLA_CORB_ENTRIES;

		rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
		res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
		res = le32_to_cpu(chip->rirb.buf[rp]);
		if (res_ex & LOLA_RIRB_EX_UNSOL_EV)
			lola_queue_unsol_event(chip, res, res_ex);
		else if (chip->rirb.cmds) {
			chip->res = res;
			chip->res_ex = res_ex;
			smp_wmb();
			chip->rirb.cmds--;
		}
	}
}

static int rirb_get_response(struct lola *chip, unsigned int *val,
			     unsigned int *extval)
{
	unsigned long timeout;

 again:
	timeout = jiffies + msecs_to_jiffies(1000);
	for (;;) {
		if (chip->polling_mode) {
			spin_lock_irq(&chip->reg_lock);
			lola_update_rirb(chip);
			spin_unlock_irq(&chip->reg_lock);
		}
		if (!chip->rirb.cmds) {
			*val = chip->res;
			if (extval)
				*extval = chip->res_ex;
			verbose_debug("get_response: %x, %x\n",
				      chip->res, chip->res_ex);
			if (chip->res_ex & LOLA_RIRB_EX_ERROR) {
				dev_warn(chip->card->dev, "RIRB ERROR: "
				       "NID=%x, verb=%x, data=%x, ext=%x\n",
				       chip->last_cmd_nid,
				       chip->last_verb, chip->last_data,
				       chip->last_extdata);
				return -EIO;
			}
			return 0;
		}
		if (time_after(jiffies, timeout))
			break;
		udelay(20);
		cond_resched();
	}
	dev_warn(chip->card->dev, "RIRB response error\n");
	if (!chip->polling_mode) {
		dev_warn(chip->card->dev, "switching to polling mode\n");
		chip->polling_mode = 1;
		goto again;
	}
	return -EIO;
}

/* aynchronous write of a codec verb with data */
int lola_codec_write(struct lola *chip, unsigned int nid, unsigned int verb,
		     unsigned int data, unsigned int extdata)
{
	verbose_debug("codec_write NID=%x, verb=%x, data=%x, ext=%x\n",
		      nid, verb, data, extdata);
	return corb_send_verb(chip, nid, verb, data, extdata);
}

/* write a codec verb with data and read the returned status */
int lola_codec_read(struct lola *chip, unsigned int nid, unsigned int verb,
		    unsigned int data, unsigned int extdata,
		    unsigned int *val, unsigned int *extval)
{
	int err;

	verbose_debug("codec_read NID=%x, verb=%x, data=%x, ext=%x\n",
		      nid, verb, data, extdata);
	err = corb_send_verb(chip, nid, verb, data, extdata);
	if (err < 0)
		return err;
	err = rirb_get_response(chip, val, extval);
	return err;
}

/* flush all pending codec writes */
int lola_codec_flush(struct lola *chip)
{
	unsigned int tmp;
	return rirb_get_response(chip, &tmp, NULL);
}

/*
 * interrupt handler
 */
static irqreturn_t lola_interrupt(int irq, void *dev_id)
{
	struct lola *chip = dev_id;
	unsigned int notify_ins, notify_outs, error_ins, error_outs;
	int handled = 0;
	int i;

	notify_ins = notify_outs = error_ins = error_outs = 0;
	spin_lock(&chip->reg_lock);
	for (;;) {
		unsigned int status, in_sts, out_sts;
		unsigned int reg;

		status = lola_readl(chip, BAR1, DINTSTS);
		if (!status || status == -1)
			break;

		in_sts = lola_readl(chip, BAR1, DIINTSTS);
		out_sts = lola_readl(chip, BAR1, DOINTSTS);

		/* clear Input Interrupts */
		for (i = 0; in_sts && i < chip->pcm[CAPT].num_streams; i++) {
			if (!(in_sts & (1 << i)))
				continue;
			in_sts &= ~(1 << i);
			reg = lola_dsd_read(chip, i, STS);
			if (reg & LOLA_DSD_STS_DESE) /* error */
				error_ins |= (1 << i);
			if (reg & LOLA_DSD_STS_BCIS) /* notify */
				notify_ins |= (1 << i);
			/* clear */
			lola_dsd_write(chip, i, STS, reg);
		}

		/* clear Output Interrupts */
		for (i = 0; out_sts && i < chip->pcm[PLAY].num_streams; i++) {
			if (!(out_sts & (1 << i)))
				continue;
			out_sts &= ~(1 << i);
			reg = lola_dsd_read(chip, i + MAX_STREAM_IN_COUNT, STS);
			if (reg & LOLA_DSD_STS_DESE) /* error */
				error_outs |= (1 << i);
			if (reg & LOLA_DSD_STS_BCIS) /* notify */
				notify_outs |= (1 << i);
			lola_dsd_write(chip, i + MAX_STREAM_IN_COUNT, STS, reg);
		}

		if (status & LOLA_DINT_CTRL) {
			unsigned char rbsts; /* ring status is byte access */
			rbsts = lola_readb(chip, BAR0, RIRBSTS);
			rbsts &= LOLA_RIRB_INT_MASK;
			if (rbsts)
				lola_writeb(chip, BAR0, RIRBSTS, rbsts);
			rbsts = lola_readb(chip, BAR0, CORBSTS);
			rbsts &= LOLA_CORB_INT_MASK;
			if (rbsts)
				lola_writeb(chip, BAR0, CORBSTS, rbsts);

			lola_update_rirb(chip);
		}

		if (status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)) {
			/* clear global fifo error interrupt */
			lola_writel(chip, BAR1, DINTSTS,
				    (status & (LOLA_DINT_FIFOERR | LOLA_DINT_MUERR)));
		}
		handled = 1;
	}
	spin_unlock(&chip->reg_lock);

	lola_pcm_update(chip, &chip->pcm[CAPT], notify_ins);
	lola_pcm_update(chip, &chip->pcm[PLAY], notify_outs);

	return IRQ_RETVAL(handled);
}


/*
 * controller
 */
static int reset_controller(struct lola *chip)
{
	unsigned int gctl = lola_readl(chip, BAR0, GCTL);
	unsigned long end_time;

	if (gctl) {
		/* to be sure */
		lola_writel(chip, BAR1, BOARD_MODE, 0);
		return 0;
	}

	chip->cold_reset = 1;
	lola_writel(chip, BAR0, GCTL, LOLA_GCTL_RESET);
	end_time = jiffies + msecs_to_jiffies(200);
	do {
		msleep(1);
		gctl = lola_readl(chip, BAR0, GCTL);
		if (gctl)
			break;
	} while (time_before(jiffies, end_time));
	if (!gctl) {
		dev_err(chip->card->dev, "cannot reset controller\n");
		return -EIO;
	}
	return 0;
}

static void lola_irq_enable(struct lola *chip)
{
	unsigned int val;

	/* enalbe all I/O streams */
	val = (1 << chip->pcm[PLAY].num_streams) - 1;
	lola_writel(chip, BAR1, DOINTCTL, val);
	val = (1 << chip->pcm[CAPT].num_streams) - 1;
	lola_writel(chip, BAR1, DIINTCTL, val);

	/* enable global irqs */
	val = LOLA_DINT_GLOBAL | LOLA_DINT_CTRL | LOLA_DINT_FIFOERR |
		LOLA_DINT_MUERR;
	lola_writel(chip, BAR1, DINTCTL, val);
}

static void lola_irq_disable(struct lola *chip)
{
	lola_writel(chip, BAR1, DINTCTL, 0);
	lola_writel(chip, BAR1, DIINTCTL, 0);
	lola_writel(chip, BAR1, DOINTCTL, 0);
}

static int setup_corb_rirb(struct lola *chip)
{
	unsigned char tmp;
	unsigned long end_time;

	chip->rb = snd_devm_alloc_pages(&chip->pci->dev, SNDRV_DMA_TYPE_DEV,
					PAGE_SIZE);
	if (!chip->rb)
		return -ENOMEM;

	chip->corb.addr = chip->rb->addr;
	chip->corb.buf = (__le32 *)chip->rb->area;
	chip->rirb.addr = chip->rb->addr + 2048;
	chip->rirb.buf = (__le32 *)(chip->rb->area + 2048);

	/* disable ringbuffer DMAs */
	lola_writeb(chip, BAR0, RIRBCTL, 0);
	lola_writeb(chip, BAR0, CORBCTL, 0);

	end_time = jiffies + msecs_to_jiffies(200);
	do {
		if (!lola_readb(chip, BAR0, RIRBCTL) &&
		    !lola_readb(chip, BAR0, CORBCTL))
			break;
		msleep(1);
	} while (time_before(jiffies, end_time));

	/* CORB set up */
	lola_writel(chip, BAR0, CORBLBASE, (u32)chip->corb.addr);
	lola_writel(chip, BAR0, CORBUBASE, upper_32_bits(chip->corb.addr));
	/* set the corb size to 256 entries */
	lola_writeb(chip, BAR0, CORBSIZE, 0x02);
	/* set the corb write pointer to 0 */
	lola_writew(chip, BAR0, CORBWP, 0);
	/* reset the corb hw read pointer */
	lola_writew(chip, BAR0, CORBRP, LOLA_RBRWP_CLR);
	/* enable corb dma */
	lola_writeb(chip, BAR0, CORBCTL, LOLA_RBCTL_DMA_EN);
	/* clear flags if set */
	tmp = lola_readb(chip, BAR0, CORBSTS) & LOLA_CORB_INT_MASK;
	if (tmp)
		lola_writeb(chip, BAR0, CORBSTS, tmp);
	chip->corb.wp = 0;

	/* RIRB set up */
	lola_writel(chip, BAR0, RIRBLBASE, (u32)chip->rirb.addr);
	lola_writel(chip, BAR0, RIRBUBASE, upper_32_bits(chip->rirb.addr));
	/* set the rirb size to 256 entries */
	lola_writeb(chip, BAR0, RIRBSIZE, 0x02);
	/* reset the rirb hw write pointer */
	lola_writew(chip, BAR0, RIRBWP, LOLA_RBRWP_CLR);
	/* set N=1, get RIRB response interrupt for new entry */
	lola_writew(chip, BAR0, RINTCNT, 1);
	/* enable rirb dma and response irq */
	lola_writeb(chip, BAR0, RIRBCTL, LOLA_RBCTL_DMA_EN | LOLA_RBCTL_IRQ_EN);
	/* clear flags if set */
	tmp =  lola_readb(chip, BAR0, RIRBSTS) & LOLA_RIRB_INT_MASK;
	if (tmp)
		lola_writeb(chip, BAR0, RIRBSTS, tmp);
	chip->rirb.rp = chip->rirb.cmds = 0;

	return 0;
}

static void stop_corb_rirb(struct lola *chip)
{
	/* disable ringbuffer DMAs */
	lola_writeb(chip, BAR0, RIRBCTL, 0);
	lola_writeb(chip, BAR0, CORBCTL, 0);
}

static void lola_reset_setups(struct lola *chip)
{
	/* update the granularity */
	lola_set_granularity(chip, chip->granularity, true);
	/* update the sample clock */
	lola_set_clock_index(chip, chip->clock.cur_index);
	/* enable unsolicited events of the clock widget */
	lola_enable_clock_events(chip);
	/* update the analog gains */
	lola_setup_all_analog_gains(chip, CAPT, false); /* input, update */
	/* update SRC configuration if applicable */
	lola_set_src_config(chip, chip->input_src_mask, false);
	/* update the analog outputs */
	lola_setup_all_analog_gains(chip, PLAY, false); /* output, update */
}

static int lola_parse_tree(struct lola *chip)
{
	unsigned int val;
	int nid, err;

	err = lola_read_param(chip, 0, LOLA_PAR_VENDOR_ID, &val);
	if (err < 0) {
		dev_err(chip->card->dev, "Can't read VENDOR_ID\n");
		return err;
	}
	val >>= 16;
	if (val != 0x1369) {
		dev_err(chip->card->dev, "Unknown codec vendor 0x%x\n", val);
		return -EINVAL;
	}

	err = lola_read_param(chip, 1, LOLA_PAR_FUNCTION_TYPE, &val);
	if (err < 0) {
		dev_err(chip->card->dev, "Can't read FUNCTION_TYPE\n");
		return err;
	}
	if (val != 1) {
		dev_err(chip->card->dev, "Unknown function type %d\n", val);
		return -EINVAL;
	}

	err = lola_read_param(chip, 1, LOLA_PAR_SPECIFIC_CAPS, &val);
	if (err < 0) {
		dev_err(chip->card->dev, "Can't read SPECCAPS\n");
		return err;
	}
	chip->lola_caps = val;
	chip->pin[CAPT].num_pins = LOLA_AFG_INPUT_PIN_COUNT(chip->lola_caps);
	chip->pin[PLAY].num_pins = LOLA_AFG_OUTPUT_PIN_COUNT(chip->lola_caps);
	dev_dbg(chip->card->dev, "speccaps=0x%x, pins in=%d, out=%d\n",
		    chip->lola_caps,
		    chip->pin[CAPT].num_pins, chip->pin[PLAY].num_pins);

	if (chip->pin[CAPT].num_pins > MAX_AUDIO_INOUT_COUNT ||
	    chip->pin[PLAY].num_pins > MAX_AUDIO_INOUT_COUNT) {
		dev_err(chip->card->dev, "Invalid Lola-spec caps 0x%x\n", val);
		return -EINVAL;
	}

	nid = 0x02;
	err = lola_init_pcm(chip, CAPT, &nid);
	if (err < 0)
		return err;
	err = lola_init_pcm(chip, PLAY, &nid);
	if (err < 0)
		return err;

	err = lola_init_pins(chip, CAPT, &nid);
	if (err < 0)
		return err;
	err = lola_init_pins(chip, PLAY, &nid);
	if (err < 0)
		return err;

	if (LOLA_AFG_CLOCK_WIDGET_PRESENT(chip->lola_caps)) {
		err = lola_init_clock_widget(chip, nid);
		if (err < 0)
			return err;
		nid++;
	}
	if (LOLA_AFG_MIXER_WIDGET_PRESENT(chip->lola_caps)) {
		err = lola_init_mixer_widget(chip, nid);
		if (err < 0)
			return err;
		nid++;
	}

	/* enable unsolicited events of the clock widget */
	err = lola_enable_clock_events(chip);
	if (err < 0)
		return err;

	/* if last ResetController was not a ColdReset, we don't know
	 * the state of the card; initialize here again
	 */
	if (!chip->cold_reset) {
		lola_reset_setups(chip);
		chip->cold_reset = 1;
	} else {
		/* set the granularity if it is not the default */
		if (chip->granularity != LOLA_GRANULARITY_MIN)
			lola_set_granularity(chip, chip->granularity, true);
	}

	return 0;
}

static void lola_stop_hw(struct lola *chip)
{
	stop_corb_rirb(chip);
	lola_irq_disable(chip);
}

static void lola_free(struct snd_card *card)
{
	struct lola *chip = card->private_data;

	if (chip->initialized)
		lola_stop_hw(chip);
	lola_free_mixer(chip);
}

static int lola_create(struct snd_card *card, struct pci_dev *pci, int dev)
{
	struct lola *chip = card->private_data;
	int err;
	unsigned int dever;

	err = pcim_enable_device(pci);
	if (err < 0)
		return err;

	spin_lock_init(&chip->reg_lock);
	mutex_init(&chip->open_mutex);
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;
	card->private_free = lola_free;

	chip->granularity = granularity[dev];
	switch (chip->granularity) {
	case 8:
		chip->sample_rate_max = 48000;
		break;
	case 16:
		chip->sample_rate_max = 96000;
		break;
	case 32:
		chip->sample_rate_max = 192000;
		break;
	default:
		dev_warn(chip->card->dev,
			   "Invalid granularity %d, reset to %d\n",
			   chip->granularity, LOLA_GRANULARITY_MAX);
		chip->granularity = LOLA_GRANULARITY_MAX;
		chip->sample_rate_max = 192000;
		break;
	}
	chip->sample_rate_min = sample_rate_min[dev];
	if (chip->sample_rate_min > chip->sample_rate_max) {
		dev_warn(chip->card->dev,
			   "Invalid sample_rate_min %d, reset to 16000\n",
			   chip->sample_rate_min);
		chip->sample_rate_min = 16000;
	}

	err = pcim_iomap_regions(pci, (1 << 0) | (1 << 2), DRVNAME);
	if (err < 0)
		return err;

	chip->bar[0].addr = pci_resource_start(pci, 0);
	chip->bar[0].remap_addr = pcim_iomap_table(pci)[0];
	chip->bar[1].addr = pci_resource_start(pci, 2);
	chip->bar[1].remap_addr = pcim_iomap_table(pci)[2];

	pci_set_master(pci);

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

	if (devm_request_irq(&pci->dev, pci->irq, lola_interrupt, IRQF_SHARED,
			     KBUILD_MODNAME, chip)) {
		dev_err(chip->card->dev, "unable to grab IRQ %d\n", pci->irq);
		return -EBUSY;
	}
	chip->irq = pci->irq;
	card->sync_irq = chip->irq;

	dever = lola_readl(chip, BAR1, DEVER);
	chip->pcm[CAPT].num_streams = (dever >> 0) & 0x3ff;
	chip->pcm[PLAY].num_streams = (dever >> 10) & 0x3ff;
	chip->version = (dever >> 24) & 0xff;
	dev_dbg(chip->card->dev, "streams in=%d, out=%d, version=0x%x\n",
		    chip->pcm[CAPT].num_streams, chip->pcm[PLAY].num_streams,
		    chip->version);

	/* Test LOLA_BAR1_DEVER */
	if (chip->pcm[CAPT].num_streams > MAX_STREAM_IN_COUNT ||
	    chip->pcm[PLAY].num_streams > MAX_STREAM_OUT_COUNT ||
	    (!chip->pcm[CAPT].num_streams &&
	     !chip->pcm[PLAY].num_streams)) {
		dev_err(chip->card->dev, "invalid DEVER = %x\n", dever);
		return -EINVAL;
	}

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

	strcpy(card->driver, "Lola");
	strscpy(card->shortname, "Digigram Lola", sizeof(card->shortname));
	snprintf(card->longname, sizeof(card->longname),
		 "%s at 0x%lx irq %i",
		 card->shortname, chip->bar[0].addr, chip->irq);
	strcpy(card->mixername, card->shortname);

	lola_irq_enable(chip);

	chip->initialized = 1;
	return 0;
}

static int lola_probe(struct pci_dev *pci,
		      const struct pci_device_id *pci_id)
{
	static int dev;
	struct snd_card *card;
	struct lola *chip;
	int err;

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

	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
				sizeof(*chip), &card);
	if (err < 0) {
		dev_err(&pci->dev, "Error creating card!\n");
		return err;
	}
	chip = card->private_data;

	err = lola_create(card, pci, dev);
	if (err < 0)
		return err;

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

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

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

	lola_proc_debug_new(chip);

	err = snd_card_register(card);
	if (err < 0)
		return err;

	pci_set_drvdata(pci, card);
	dev++;
	return 0;
}

/* PCI IDs */
static const struct pci_device_id lola_ids[] = {
	{ PCI_VDEVICE(DIGIGRAM, 0x0001) },
	{ 0, }
};
MODULE_DEVICE_TABLE(pci, lola_ids);

/* pci_driver definition */
static struct pci_driver lola_driver = {
	.name = KBUILD_MODNAME,
	.id_table = lola_ids,
	.probe = lola_probe,
};

module_pci_driver(lola_driver);