aboutsummaryrefslogtreecommitdiff
path: root/sound/drivers/vx/vx_core.c
blob: e8cc169939038a4512172ad5cd61bdb8c6969d2e (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
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
/*
 * Driver for Digigram VX soundcards
 *
 * Hardware core part
 *
 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
 *
 *   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; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/asoundef.h>
#include <sound/info.h>
#include <asm/io.h>
#include <sound/vx_core.h>
#include "vx_cmd.h"

MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
MODULE_LICENSE("GPL");


/*
 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
 * @reg: register to check
 * @mask: bit mask
 * @bit: resultant bit to be checked
 * @time: time-out of loop in msec
 *
 * returns zero if a bit matches, or a negative error code.
 */
int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
{
	unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
	static char *reg_names[VX_REG_MAX] = {
		"ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
		"DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
		"ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
		"MIC3", "INTCSR", "CNTRL", "GPIOC",
		"LOFREQ", "HIFREQ", "CSUER", "RUER"
	};

	do {
		if ((snd_vx_inb(chip, reg) & mask) == bit)
			return 0;
		//msleep(10);
	} while (time_after_eq(end_time, jiffies));
	snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg));
	return -EIO;
}

EXPORT_SYMBOL(snd_vx_check_reg_bit);

/*
 * vx_send_irq_dsp - set command irq bit
 * @num: the requested IRQ type, IRQ_XXX
 *
 * this triggers the specified IRQ request
 * returns 0 if successful, or a negative error code.
 * 
 */
static int vx_send_irq_dsp(struct vx_core *chip, int num)
{
	int nirq;

	/* wait for Hc = 0 */
	if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
		return -EIO;

	nirq = num;
	if (vx_has_new_dsp(chip))
		nirq += VXP_IRQ_OFFSET;
	vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
	return 0;
}


/*
 * vx_reset_chk - reset CHK bit on ISR
 *
 * returns 0 if successful, or a negative error code.
 */
static int vx_reset_chk(struct vx_core *chip)
{
	/* Reset irq CHK */
	if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
		return -EIO;
	/* Wait until CHK = 0 */
	if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
		return -EIO;
	return 0;
}

/*
 * vx_transfer_end - terminate message transfer
 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
 *
 * returns 0 if successful, or a negative error code.
 * the error code can be VX-specific, retrieved via vx_get_error().
 * NB: call with mutex held!
 */
static int vx_transfer_end(struct vx_core *chip, int cmd)
{
	int err;

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

	/* irq MESS_READ/WRITE_END */
	if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
		return err;

	/* Wait CHK = 1 */
	if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
		return err;

	/* If error, Read RX */
	if ((err = vx_inb(chip, ISR)) & ISR_ERR) {
		if ((err = vx_wait_for_rx_full(chip)) < 0) {
			snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
			return err;
		}
		err = vx_inb(chip, RXH) << 16;
		err |= vx_inb(chip, RXM) << 8;
		err |= vx_inb(chip, RXL);
		snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
		return -(VX_ERR_MASK | err);
	}
	return 0;
}

/*
 * vx_read_status - return the status rmh
 * @rmh: rmh record to store the status
 *
 * returns 0 if successful, or a negative error code.
 * the error code can be VX-specific, retrieved via vx_get_error().
 * NB: call with mutex held!
 */
static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
{
	int i, err, val, size;

	/* no read necessary? */
	if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
		return 0;

	/* Wait for RX full (with timeout protection)
	 * The first word of status is in RX
	 */
	err = vx_wait_for_rx_full(chip);
	if (err < 0)
		return err;

	/* Read RX */
	val = vx_inb(chip, RXH) << 16;
	val |= vx_inb(chip, RXM) << 8;
	val |= vx_inb(chip, RXL);

	/* If status given by DSP, let's decode its size */
	switch (rmh->DspStat) {
	case RMH_SSIZE_ARG:
		size = val & 0xff;
		rmh->Stat[0] = val & 0xffff00;
		rmh->LgStat = size + 1;
		break;
	case RMH_SSIZE_MASK:
		/* Let's count the arg numbers from a mask */
		rmh->Stat[0] = val;
		size = 0;
		while (val) {
			if (val & 0x01)
				size++;
			val >>= 1;
		}
		rmh->LgStat = size + 1;
		break;
	default:
		/* else retrieve the status length given by the driver */
		size = rmh->LgStat;
		rmh->Stat[0] = val;  /* Val is the status 1st word */
		size--;              /* hence adjust remaining length */
		break;
        }

	if (size < 1)
		return 0;
	if (snd_BUG_ON(size >= SIZE_MAX_STATUS))
		return -EINVAL;

	for (i = 1; i <= size; i++) {
		/* trigger an irq MESS_WRITE_NEXT */
		err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
		if (err < 0)
			return err;
		/* Wait for RX full (with timeout protection) */
		err = vx_wait_for_rx_full(chip);
		if (err < 0)
			return err;
		rmh->Stat[i] = vx_inb(chip, RXH) << 16;
		rmh->Stat[i] |= vx_inb(chip, RXM) <<  8;
		rmh->Stat[i] |= vx_inb(chip, RXL);
	}

	return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
}


#define MASK_MORE_THAN_1_WORD_COMMAND   0x00008000
#define MASK_1_WORD_COMMAND             0x00ff7fff

/*
 * vx_send_msg_nolock - send a DSP message and read back the status
 * @rmh: the rmh record to send and receive
 *
 * returns 0 if successful, or a negative error code.
 * the error code can be VX-specific, retrieved via vx_get_error().
 * 
 * this function doesn't call mutex lock at all.
 */
int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
{
	int i, err;
	
	if (chip->chip_status & VX_STAT_IS_STALE)
		return -EBUSY;

	if ((err = vx_reset_chk(chip)) < 0) {
		snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
		return err;
	}

#if 0
	printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
	       rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
	if (rmh->LgCmd > 1) {
		printk(KERN_DEBUG "  ");
		for (i = 1; i < rmh->LgCmd; i++)
			printk("0x%06x ", rmh->Cmd[i]);
		printk("\n");
	}
#endif
	/* Check bit M is set according to length of the command */
	if (rmh->LgCmd > 1)
		rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
	else
		rmh->Cmd[0] &= MASK_1_WORD_COMMAND;

	/* Wait for TX empty */
	if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
		snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
		return err;
	}

	/* Write Cmd[0] */
	vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
	vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
	vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);

	/* Trigger irq MESSAGE */
	if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) {
		snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
		return err;
	}

	/* Wait for CHK = 1 */
	if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
		return err;

	/* If error, get error value from RX */
	if (vx_inb(chip, ISR) & ISR_ERR) {
		if ((err = vx_wait_for_rx_full(chip)) < 0) {
			snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
			return err;
		}
		err = vx_inb(chip, RXH) << 16;
		err |= vx_inb(chip, RXM) << 8;
		err |= vx_inb(chip, RXL);
		snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
		err = -(VX_ERR_MASK | err);
		return err;
	}

	/* Send the other words */
	if (rmh->LgCmd > 1) {
		for (i = 1; i < rmh->LgCmd; i++) {
			/* Wait for TX ready */
			if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
				snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
				return err;
			}

			/* Write Cmd[i] */
			vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
			vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
			vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);

			/* Trigger irq MESS_READ_NEXT */
			if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) {
				snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
				return err;
			}
		}
		/* Wait for TX empty */
		if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
			snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
			return err;
		}
		/* End of transfer */
		err = vx_transfer_end(chip, IRQ_MESS_READ_END);
		if (err < 0)
			return err;
	}

	return vx_read_status(chip, rmh);
}


/*
 * vx_send_msg - send a DSP message with mutex
 * @rmh: the rmh record to send and receive
 *
 * returns 0 if successful, or a negative error code.
 * see vx_send_msg_nolock().
 */
int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
{
	int err;

	mutex_lock(&chip->lock);
	err = vx_send_msg_nolock(chip, rmh);
	mutex_unlock(&chip->lock);
	return err;
}


/*
 * vx_send_rih_nolock - send an RIH to xilinx
 * @cmd: the command to send
 *
 * returns 0 if successful, or a negative error code.
 * the error code can be VX-specific, retrieved via vx_get_error().
 *
 * this function doesn't call mutex at all.
 *
 * unlike RMH, no command is sent to DSP.
 */
int vx_send_rih_nolock(struct vx_core *chip, int cmd)
{
	int err;

	if (chip->chip_status & VX_STAT_IS_STALE)
		return -EBUSY;

#if 0
	printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
#endif
	if ((err = vx_reset_chk(chip)) < 0)
		return err;
	/* send the IRQ */
	if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
		return err;
	/* Wait CHK = 1 */
	if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
		return err;
	/* If error, read RX */
	if (vx_inb(chip, ISR) & ISR_ERR) {
		if ((err = vx_wait_for_rx_full(chip)) < 0)
			return err;
		err = vx_inb(chip, RXH) << 16;
		err |= vx_inb(chip, RXM) << 8;
		err |= vx_inb(chip, RXL);
		return -(VX_ERR_MASK | err);
	}
	return 0;
}


/*
 * vx_send_rih - send an RIH with mutex
 * @cmd: the command to send
 *
 * see vx_send_rih_nolock().
 */
int vx_send_rih(struct vx_core *chip, int cmd)
{
	int err;

	mutex_lock(&chip->lock);
	err = vx_send_rih_nolock(chip, cmd);
	mutex_unlock(&chip->lock);
	return err;
}

#define END_OF_RESET_WAIT_TIME		500	/* us */

/**
 * snd_vx_boot_xilinx - boot up the xilinx interface
 * @boot: the boot record to load
 */
int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
{
	unsigned int i;
	int no_fillup = vx_has_new_dsp(chip);

	/* check the length of boot image */
	if (boot->size <= 0)
		return -EINVAL;
	if (boot->size % 3)
		return -EINVAL;
#if 0
	{
		/* more strict check */
		unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
		if (boot->size != (c + 2) * 3)
			return -EINVAL;
	}
#endif

	/* reset dsp */
	vx_reset_dsp(chip);
	
	udelay(END_OF_RESET_WAIT_TIME); /* another wait? */

	/* download boot strap */
	for (i = 0; i < 0x600; i += 3) {
		if (i >= boot->size) {
			if (no_fillup)
				break;
			if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
				snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
				return -EIO;
			}
			vx_outb(chip, TXH, 0);
			vx_outb(chip, TXM, 0);
			vx_outb(chip, TXL, 0);
		} else {
			const unsigned char *image = boot->data + i;
			if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
				snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
				return -EIO;
			}
			vx_outb(chip, TXH, image[0]);
			vx_outb(chip, TXM, image[1]);
			vx_outb(chip, TXL, image[2]);
		}
	}
	return 0;
}

EXPORT_SYMBOL(snd_vx_load_boot_image);

/*
 * vx_test_irq_src - query the source of interrupts
 *
 * called from irq handler only
 */
static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
{
	int err;

	vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
	mutex_lock(&chip->lock);
	err = vx_send_msg_nolock(chip, &chip->irq_rmh);
	if (err < 0)
		*ret = 0;
	else
		*ret = chip->irq_rmh.Stat[0];
	mutex_unlock(&chip->lock);
	return err;
}


/*
 * snd_vx_threaded_irq_handler - threaded irq handler
 */
irqreturn_t snd_vx_threaded_irq_handler(int irq, void *dev)
{
	struct vx_core *chip = dev;
	unsigned int events;
		
	if (chip->chip_status & VX_STAT_IS_STALE)
		return IRQ_HANDLED;

	if (vx_test_irq_src(chip, &events) < 0)
		return IRQ_HANDLED;
    
#if 0
	if (events & 0x000800)
		printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
#endif
	// printk(KERN_DEBUG "IRQ events = 0x%x\n", events);

	/* We must prevent any application using this DSP
	 * and block any further request until the application
	 * either unregisters or reloads the DSP
	 */
	if (events & FATAL_DSP_ERROR) {
		snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
		return IRQ_HANDLED;
	}

	/* The start on time code conditions are filled (ie the time code
	 * received by the board is equal to one of those given to it).
	 */
	if (events & TIME_CODE_EVENT_PENDING)
		; /* so far, nothing to do yet */

	/* The frequency has changed on the board (UER mode). */
	if (events & FREQUENCY_CHANGE_EVENT_PENDING)
		vx_change_frequency(chip);

	/* update the pcm streams */
	vx_pcm_update_intr(chip, events);
	return IRQ_HANDLED;
}
EXPORT_SYMBOL(snd_vx_threaded_irq_handler);

/**
 * snd_vx_irq_handler - interrupt handler
 */
irqreturn_t snd_vx_irq_handler(int irq, void *dev)
{
	struct vx_core *chip = dev;

	if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
	    (chip->chip_status & VX_STAT_IS_STALE))
		return IRQ_NONE;
	if (! vx_test_and_ack(chip))
		return IRQ_WAKE_THREAD;
	return IRQ_NONE;
}

EXPORT_SYMBOL(snd_vx_irq_handler);

/*
 */
static void vx_reset_board(struct vx_core *chip, int cold_reset)
{
	if (snd_BUG_ON(!chip->ops->reset_board))
		return;

	/* current source, later sync'ed with target */
	chip->audio_source = VX_AUDIO_SRC_LINE;
	if (cold_reset) {
		chip->audio_source_target = chip->audio_source;
		chip->clock_source = INTERNAL_QUARTZ;
		chip->clock_mode = VX_CLOCK_MODE_AUTO;
		chip->freq = 48000;
		chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
		chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
	}

	chip->ops->reset_board(chip, cold_reset);

	vx_reset_codec(chip, cold_reset);

	vx_set_internal_clock(chip, chip->freq);

	/* Reset the DSP */
	vx_reset_dsp(chip);

	if (vx_is_pcmcia(chip)) {
		/* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
		vx_test_and_ack(chip);
		vx_validate_irq(chip, 1);
	}

	/* init CBits */
	vx_set_iec958_status(chip, chip->uer_bits);
}


/*
 * proc interface
 */

static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	struct vx_core *chip = entry->private_data;
	static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
	static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
	static char *clock_mode[] = { "Auto", "Internal", "External" };
	static char *clock_src[] = { "Internal", "External" };
	static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
	
	snd_iprintf(buffer, "%s\n", chip->card->longname);
	snd_iprintf(buffer, "Xilinx Firmware: %s\n",
		    chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
	snd_iprintf(buffer, "Device Initialized: %s\n",
		    chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
	snd_iprintf(buffer, "DSP audio info:");
	if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
		snd_iprintf(buffer, " realtime");
	if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
		snd_iprintf(buffer, " offline");
	if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
		snd_iprintf(buffer, " mpeg1");
	if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
		snd_iprintf(buffer, " mpeg2");
	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
		snd_iprintf(buffer, " linear8");
	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
		snd_iprintf(buffer, " linear16");
	if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
		snd_iprintf(buffer, " linear24");
	snd_iprintf(buffer, "\n");
	snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
		    audio_src_vxp[chip->audio_source] :
		    audio_src_vx2[chip->audio_source]);
	snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
	snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
	snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
	snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
	snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
	snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
		    chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
		    chip->ibl.granularity);
}

static void vx_proc_init(struct vx_core *chip)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(chip->card, "vx-status", &entry))
		snd_info_set_text_ops(entry, chip, vx_proc_read);
}


/**
 * snd_vx_dsp_boot - load the DSP boot
 */
int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
{
	int err;
	int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);

	vx_reset_board(chip, cold_reset);
	vx_validate_irq(chip, 0);

	if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
		return err;
	msleep(10);

	return 0;
}

EXPORT_SYMBOL(snd_vx_dsp_boot);

/**
 * snd_vx_dsp_load - load the DSP image
 */
int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
{
	unsigned int i;
	int err;
	unsigned int csum = 0;
	const unsigned char *image, *cptr;

	if (dsp->size % 3)
		return -EINVAL;

	vx_toggle_dac_mute(chip, 1);

	/* Transfert data buffer from PC to DSP */
	for (i = 0; i < dsp->size; i += 3) {
		image = dsp->data + i;
		/* Wait DSP ready for a new read */
		if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
			printk(KERN_ERR
			       "dsp loading error at position %d\n", i);
			return err;
		}
		cptr = image;
		csum ^= *cptr;
		csum = (csum >> 24) | (csum << 8);
		vx_outb(chip, TXH, *cptr++);
		csum ^= *cptr;
		csum = (csum >> 24) | (csum << 8);
		vx_outb(chip, TXM, *cptr++);
		csum ^= *cptr;
		csum = (csum >> 24) | (csum << 8);
		vx_outb(chip, TXL, *cptr++);
	}
	snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);

	msleep(200);

	if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
		return err;

	vx_toggle_dac_mute(chip, 0);

	vx_test_and_ack(chip);
	vx_validate_irq(chip, 1);

	return 0;
}

EXPORT_SYMBOL(snd_vx_dsp_load);

#ifdef CONFIG_PM
/*
 * suspend
 */
int snd_vx_suspend(struct vx_core *chip)
{
	unsigned int i;

	snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
	chip->chip_status |= VX_STAT_IN_SUSPEND;
	for (i = 0; i < chip->hw->num_codecs; i++)
		snd_pcm_suspend_all(chip->pcm[i]);

	return 0;
}

EXPORT_SYMBOL(snd_vx_suspend);

/*
 * resume
 */
int snd_vx_resume(struct vx_core *chip)
{
	int i, err;

	chip->chip_status &= ~VX_STAT_CHIP_INIT;

	for (i = 0; i < 4; i++) {
		if (! chip->firmware[i])
			continue;
		err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
		if (err < 0) {
			snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
			return -EIO;
		}
	}

	chip->chip_status |= VX_STAT_CHIP_INIT;
	chip->chip_status &= ~VX_STAT_IN_SUSPEND;

	snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
	return 0;
}

EXPORT_SYMBOL(snd_vx_resume);
#endif

/**
 * snd_vx_create - constructor for struct vx_core
 * @hw: hardware specific record
 *
 * this function allocates the instance and prepare for the hardware
 * initialization.
 *
 * return the instance pointer if successful, NULL in error.
 */
struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
			      struct snd_vx_ops *ops,
			      int extra_size)
{
	struct vx_core *chip;

	if (snd_BUG_ON(!card || !hw || !ops))
		return NULL;

	chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
	if (! chip) {
		snd_printk(KERN_ERR "vx_core: no memory\n");
		return NULL;
	}
	mutex_init(&chip->lock);
	chip->irq = -1;
	chip->hw = hw;
	chip->type = hw->type;
	chip->ops = ops;
	mutex_init(&chip->mixer_mutex);

	chip->card = card;
	card->private_data = chip;
	strcpy(card->driver, hw->name);
	sprintf(card->shortname, "Digigram %s", hw->name);

	vx_proc_init(chip);

	return chip;
}

EXPORT_SYMBOL(snd_vx_create);

/*
 * module entries
 */
static int __init alsa_vx_core_init(void)
{
	return 0;
}

static void __exit alsa_vx_core_exit(void)
{
}

module_init(alsa_vx_core_init)
module_exit(alsa_vx_core_exit)