summaryrefslogtreecommitdiffstats
path: root/sound/pci/asihpi/hpicmn.c
blob: 3e9c5c289764d7bc1923169853950028f95e129d (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
/******************************************************************************

    AudioScience HPI driver
    Copyright (C) 1997-2010  AudioScience Inc. <support@audioscience.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of version 2 of the GNU General Public License as
    published by the Free Software Foundation;

    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

\file hpicmn.c

 Common functions used by hpixxxx.c modules

(C) Copyright AudioScience Inc. 1998-2003
*******************************************************************************/
#define SOURCEFILE_NAME "hpicmn.c"

#include "hpi_internal.h"
#include "hpidebug.h"
#include "hpimsginit.h"

#include "hpicmn.h"

struct hpi_adapters_list {
	struct hpios_spinlock list_lock;
	struct hpi_adapter_obj adapter[HPI_MAX_ADAPTERS];
	u16 gw_num_adapters;
};

static struct hpi_adapters_list adapters;

/**
* Given an HPI Message that was sent out and a response that was received,
* validate that the response has the correct fields filled in,
* i.e ObjectType, Function etc
**/
u16 hpi_validate_response(struct hpi_message *phm, struct hpi_response *phr)
{
	if (phr->type != HPI_TYPE_RESPONSE) {
		HPI_DEBUG_LOG(ERROR, "header type %d invalid\n", phr->type);
		return HPI_ERROR_INVALID_RESPONSE;
	}

	if (phr->object != phm->object) {
		HPI_DEBUG_LOG(ERROR, "header object %d invalid\n",
			phr->object);
		return HPI_ERROR_INVALID_RESPONSE;
	}

	if (phr->function != phm->function) {
		HPI_DEBUG_LOG(ERROR, "header type %d invalid\n",
			phr->function);
		return HPI_ERROR_INVALID_RESPONSE;
	}

	return 0;
}

u16 hpi_add_adapter(struct hpi_adapter_obj *pao)
{
	u16 retval = 0;
	/*HPI_ASSERT(pao->wAdapterType); */

	hpios_alistlock_lock(&adapters);

	if (pao->index >= HPI_MAX_ADAPTERS) {
		retval = HPI_ERROR_BAD_ADAPTER_NUMBER;
		goto unlock;
	}

	if (adapters.adapter[pao->index].adapter_type) {
		int a;
		for (a = HPI_MAX_ADAPTERS - 1; a >= 0; a--) {
			if (!adapters.adapter[a].adapter_type) {
				HPI_DEBUG_LOG(WARNING,
					"ASI%X duplicate index %d moved to %d\n",
					pao->adapter_type, pao->index, a);
				pao->index = a;
				break;
			}
		}
		if (a < 0) {
			retval = HPI_ERROR_DUPLICATE_ADAPTER_NUMBER;
			goto unlock;
		}
	}
	adapters.adapter[pao->index] = *pao;
	hpios_dsplock_init(&adapters.adapter[pao->index]);
	adapters.gw_num_adapters++;

unlock:
	hpios_alistlock_unlock(&adapters);
	return retval;
}

void hpi_delete_adapter(struct hpi_adapter_obj *pao)
{
	if (!pao->adapter_type) {
		HPI_DEBUG_LOG(ERROR, "removing null adapter?\n");
		return;
	}

	hpios_alistlock_lock(&adapters);
	if (adapters.adapter[pao->index].adapter_type)
		adapters.gw_num_adapters--;
	memset(&adapters.adapter[pao->index], 0, sizeof(adapters.adapter[0]));
	hpios_alistlock_unlock(&adapters);
}

/**
* FindAdapter returns a pointer to the struct hpi_adapter_obj with
* index wAdapterIndex in an HPI_ADAPTERS_LIST structure.
*
*/
struct hpi_adapter_obj *hpi_find_adapter(u16 adapter_index)
{
	struct hpi_adapter_obj *pao = NULL;

	if (adapter_index >= HPI_MAX_ADAPTERS) {
		HPI_DEBUG_LOG(VERBOSE, "find_adapter invalid index %d\n",
			adapter_index);
		return NULL;
	}

	pao = &adapters.adapter[adapter_index];
	if (pao->adapter_type != 0) {
		/*
		   HPI_DEBUG_LOG(VERBOSE, "Found adapter index %d\n",
		   wAdapterIndex);
		 */
		return pao;
	} else {
		/*
		   HPI_DEBUG_LOG(VERBOSE, "No adapter index %d\n",
		   wAdapterIndex);
		 */
		return NULL;
	}
}

/**
*
* wipe an HPI_ADAPTERS_LIST structure.
*
**/
static void wipe_adapter_list(void)
{
	memset(&adapters, 0, sizeof(adapters));
}

static void subsys_get_adapter(struct hpi_message *phm,
	struct hpi_response *phr)
{
	int count = phm->obj_index;
	u16 index = 0;

	/* find the nCount'th nonzero adapter in array */
	for (index = 0; index < HPI_MAX_ADAPTERS; index++) {
		if (adapters.adapter[index].adapter_type) {
			if (!count)
				break;
			count--;
		}
	}

	if (index < HPI_MAX_ADAPTERS) {
		phr->u.s.adapter_index = adapters.adapter[index].index;
		phr->u.s.adapter_type = adapters.adapter[index].adapter_type;
	} else {
		phr->u.s.adapter_index = 0;
		phr->u.s.adapter_type = 0;
		phr->error = HPI_ERROR_BAD_ADAPTER_NUMBER;
	}
}

static unsigned int control_cache_alloc_check(struct hpi_control_cache *pC)
{
	unsigned int i;
	int cached = 0;
	if (!pC)
		return 0;

	if (pC->init)
		return pC->init;

	if (!pC->p_cache)
		return 0;

	if (pC->control_count && pC->cache_size_in_bytes) {
		char *p_master_cache;
		unsigned int byte_count = 0;

		p_master_cache = (char *)pC->p_cache;
		HPI_DEBUG_LOG(DEBUG, "check %d controls\n",
			pC->control_count);
		for (i = 0; i < pC->control_count; i++) {
			struct hpi_control_cache_info *info =
				(struct hpi_control_cache_info *)
				&p_master_cache[byte_count];

			if (!info->size_in32bit_words) {
				if (!i) {
					HPI_DEBUG_LOG(INFO,
						"adap %d cache not ready?\n",
						pC->adap_idx);
					return 0;
				}
				/* The cache is invalid.
				 * Minimum valid entry size is
				 * sizeof(struct hpi_control_cache_info)
				 */
				HPI_DEBUG_LOG(ERROR,
					"adap %d zero size cache entry %d\n",
					pC->adap_idx, i);
				break;
			}

			if (info->control_type) {
				pC->p_info[info->control_index] = info;
				cached++;
			} else	/* dummy cache entry */
				pC->p_info[info->control_index] = NULL;

			byte_count += info->size_in32bit_words * 4;

			HPI_DEBUG_LOG(VERBOSE,
				"cached %d, pinfo %p index %d type %d size %d\n",
				cached, pC->p_info[info->control_index],
				info->control_index, info->control_type,
				info->size_in32bit_words);

			/* quit loop early if whole cache has been scanned.
			 * dwControlCount is the maximum possible entries
			 * but some may be absent from the cache
			 */
			if (byte_count >= pC->cache_size_in_bytes)
				break;
			/* have seen last control index */
			if (info->control_index == pC->control_count - 1)
				break;
		}

		if (byte_count != pC->cache_size_in_bytes)
			HPI_DEBUG_LOG(WARNING,
				"adap %d bytecount %d != cache size %d\n",
				pC->adap_idx, byte_count,
				pC->cache_size_in_bytes);
		else
			HPI_DEBUG_LOG(DEBUG,
				"adap %d cache good, bytecount == cache size = %d\n",
				pC->adap_idx, byte_count);

		pC->init = (u16)cached;
	}
	return pC->init;
}

/** Find a control.
*/
static short find_control(u16 control_index,
	struct hpi_control_cache *p_cache, struct hpi_control_cache_info **pI)
{
	if (!control_cache_alloc_check(p_cache)) {
		HPI_DEBUG_LOG(VERBOSE,
			"control_cache_alloc_check() failed %d\n",
			control_index);
		return 0;
	}

	*pI = p_cache->p_info[control_index];
	if (!*pI) {
		HPI_DEBUG_LOG(VERBOSE, "Uncached Control %d\n",
			control_index);
		return 0;
	} else {
		HPI_DEBUG_LOG(VERBOSE, "find_control() type %d\n",
			(*pI)->control_type);
	}
	return 1;
}

/* allow unified treatment of several string fields within struct */
#define HPICMN_PAD_OFS_AND_SIZE(m)  {\
	offsetof(struct hpi_control_cache_pad, m), \
	sizeof(((struct hpi_control_cache_pad *)(NULL))->m) }

struct pad_ofs_size {
	unsigned int offset;
	unsigned int field_size;
};

static struct pad_ofs_size pad_desc[] = {
	HPICMN_PAD_OFS_AND_SIZE(c_channel),	/* HPI_PAD_CHANNEL_NAME */
	HPICMN_PAD_OFS_AND_SIZE(c_artist),	/* HPI_PAD_ARTIST */
	HPICMN_PAD_OFS_AND_SIZE(c_title),	/* HPI_PAD_TITLE */
	HPICMN_PAD_OFS_AND_SIZE(c_comment),	/* HPI_PAD_COMMENT */
};

/** CheckControlCache checks the cache and fills the struct hpi_response
 * accordingly. It returns one if a cache hit occurred, zero otherwise.
 */
short hpi_check_control_cache(struct hpi_control_cache *p_cache,
	struct hpi_message *phm, struct hpi_response *phr)
{
	short found = 1;
	struct hpi_control_cache_info *pI;
	struct hpi_control_cache_single *pC;
	struct hpi_control_cache_pad *p_pad;

	if (!find_control(phm->obj_index, p_cache, &pI)) {
		HPI_DEBUG_LOG(VERBOSE,
			"HPICMN find_control() failed for adap %d\n",
			phm->adapter_index);
		return 0;
	}

	phr->error = 0;

	/* pC is the default cached control strucure. May be cast to
	   something else in the following switch statement.
	 */
	pC = (struct hpi_control_cache_single *)pI;
	p_pad = (struct hpi_control_cache_pad *)pI;

	switch (pI->control_type) {

	case HPI_CONTROL_METER:
		if (phm->u.c.attribute == HPI_METER_PEAK) {
			phr->u.c.an_log_value[0] = pC->u.meter.an_log_peak[0];
			phr->u.c.an_log_value[1] = pC->u.meter.an_log_peak[1];
		} else if (phm->u.c.attribute == HPI_METER_RMS) {
			if (pC->u.meter.an_logRMS[0] ==
				HPI_CACHE_INVALID_SHORT) {
				phr->error =
					HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
				phr->u.c.an_log_value[0] = HPI_METER_MINIMUM;
				phr->u.c.an_log_value[1] = HPI_METER_MINIMUM;
			} else {
				phr->u.c.an_log_value[0] =
					pC->u.meter.an_logRMS[0];
				phr->u.c.an_log_value[1] =
					pC->u.meter.an_logRMS[1];
			}
		} else
			found = 0;
		break;
	case HPI_CONTROL_VOLUME:
		if (phm->u.c.attribute == HPI_VOLUME_GAIN) {
			phr->u.c.an_log_value[0] = pC->u.vol.an_log[0];
			phr->u.c.an_log_value[1] = pC->u.vol.an_log[1];
		} else if (phm->u.c.attribute == HPI_VOLUME_MUTE) {
			if (pC->u.vol.flags & HPI_VOLUME_FLAG_HAS_MUTE) {
				if (pC->u.vol.flags & HPI_VOLUME_FLAG_MUTED)
					phr->u.c.param1 =
						HPI_BITMASK_ALL_CHANNELS;
				else
					phr->u.c.param1 = 0;
			} else {
				phr->error =
					HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
				phr->u.c.param1 = 0;
			}
		} else {
			found = 0;
		}
		break;
	case HPI_CONTROL_MULTIPLEXER:
		if (phm->u.c.attribute == HPI_MULTIPLEXER_SOURCE) {
			phr->u.c.param1 = pC->u.mux.source_node_type;
			phr->u.c.param2 = pC->u.mux.source_node_index;
		} else {
			found = 0;
		}
		break;
	case HPI_CONTROL_CHANNEL_MODE:
		if (phm->u.c.attribute == HPI_CHANNEL_MODE_MODE)
			phr->u.c.param1 = pC->u.mode.mode;
		else
			found = 0;
		break;
	case HPI_CONTROL_LEVEL:
		if (phm->u.c.attribute == HPI_LEVEL_GAIN) {
			phr->u.c.an_log_value[0] = pC->u.level.an_log[0];
			phr->u.c.an_log_value[1] = pC->u.level.an_log[1];
		} else
			found = 0;
		break;
	case HPI_CONTROL_TUNER:
		if (phm->u.c.attribute == HPI_TUNER_FREQ)
			phr->u.c.param1 = pC->u.tuner.freq_ink_hz;
		else if (phm->u.c.attribute == HPI_TUNER_BAND)
			phr->u.c.param1 = pC->u.tuner.band;
		else if (phm->u.c.attribute == HPI_TUNER_LEVEL_AVG)
			if (pC->u.tuner.s_level_avg ==
				HPI_CACHE_INVALID_SHORT) {
				phr->u.cu.tuner.s_level = 0;
				phr->error =
					HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
			} else
				phr->u.cu.tuner.s_level =
					pC->u.tuner.s_level_avg;
		else
			found = 0;
		break;
	case HPI_CONTROL_AESEBU_RECEIVER:
		if (phm->u.c.attribute == HPI_AESEBURX_ERRORSTATUS)
			phr->u.c.param1 = pC->u.aes3rx.error_status;
		else if (phm->u.c.attribute == HPI_AESEBURX_FORMAT)
			phr->u.c.param1 = pC->u.aes3rx.format;
		else
			found = 0;
		break;
	case HPI_CONTROL_AESEBU_TRANSMITTER:
		if (phm->u.c.attribute == HPI_AESEBUTX_FORMAT)
			phr->u.c.param1 = pC->u.aes3tx.format;
		else
			found = 0;
		break;
	case HPI_CONTROL_TONEDETECTOR:
		if (phm->u.c.attribute == HPI_TONEDETECTOR_STATE)
			phr->u.c.param1 = pC->u.tone.state;
		else
			found = 0;
		break;
	case HPI_CONTROL_SILENCEDETECTOR:
		if (phm->u.c.attribute == HPI_SILENCEDETECTOR_STATE) {
			phr->u.c.param1 = pC->u.silence.state;
		} else
			found = 0;
		break;
	case HPI_CONTROL_MICROPHONE:
		if (phm->u.c.attribute == HPI_MICROPHONE_PHANTOM_POWER)
			phr->u.c.param1 = pC->u.microphone.phantom_state;
		else
			found = 0;
		break;
	case HPI_CONTROL_SAMPLECLOCK:
		if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE)
			phr->u.c.param1 = pC->u.clk.source;
		else if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE_INDEX) {
			if (pC->u.clk.source_index ==
				HPI_CACHE_INVALID_UINT16) {
				phr->u.c.param1 = 0;
				phr->error =
					HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
			} else
				phr->u.c.param1 = pC->u.clk.source_index;
		} else if (phm->u.c.attribute == HPI_SAMPLECLOCK_SAMPLERATE)
			phr->u.c.param1 = pC->u.clk.sample_rate;
		else
			found = 0;
		break;
	case HPI_CONTROL_PAD:{
			struct hpi_control_cache_pad *p_pad;
			p_pad = (struct hpi_control_cache_pad *)pI;

			if (!(p_pad->field_valid_flags & (1 <<
						HPI_CTL_ATTR_INDEX(phm->u.c.
							attribute)))) {
				phr->error =
					HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
				break;
			}

			if (phm->u.c.attribute == HPI_PAD_PROGRAM_ID)
				phr->u.c.param1 = p_pad->pI;
			else if (phm->u.c.attribute == HPI_PAD_PROGRAM_TYPE)
				phr->u.c.param1 = p_pad->pTY;
			else {
				unsigned int index =
					HPI_CTL_ATTR_INDEX(phm->u.c.
					attribute) - 1;
				unsigned int offset = phm->u.c.param1;
				unsigned int pad_string_len, field_size;
				char *pad_string;
				unsigned int tocopy;

				if (index > ARRAY_SIZE(pad_desc) - 1) {
					phr->error =
						HPI_ERROR_INVALID_CONTROL_ATTRIBUTE;
					break;
				}

				pad_string =
					((char *)p_pad) +
					pad_desc[index].offset;
				field_size = pad_desc[index].field_size;
				/* Ensure null terminator */
				pad_string[field_size - 1] = 0;

				pad_string_len = strlen(pad_string) + 1;

				if (offset > pad_string_len) {
					phr->error =
						HPI_ERROR_INVALID_CONTROL_VALUE;
					break;
				}

				tocopy = pad_string_len - offset;
				if (tocopy > sizeof(phr->u.cu.chars8.sz_data))
					tocopy = sizeof(phr->u.cu.chars8.
						sz_data);

				memcpy(phr->u.cu.chars8.sz_data,
					&pad_string[offset], tocopy);

				phr->u.cu.chars8.remaining_chars =
					pad_string_len - offset - tocopy;
			}
		}
		break;
	default:
		found = 0;
		break;
	}

	HPI_DEBUG_LOG(VERBOSE, "%s Adap %d, Ctl %d, Type %d, Attr %d\n",
		found ? "Cached" : "Uncached", phm->adapter_index,
		pI->control_index, pI->control_type, phm->u.c.attribute);

	if (found)
		phr->size =
			sizeof(struct hpi_response_header) +
			sizeof(struct hpi_control_res);

	return found;
}

/** Updates the cache with Set values.

Only update if no error.
Volume and Level return the limited values in the response, so use these
Multiplexer does so use sent values
*/
void hpi_cmn_control_cache_sync_to_msg(struct hpi_control_cache *p_cache,
	struct hpi_message *phm, struct hpi_response *phr)
{
	struct hpi_control_cache_single *pC;
	struct hpi_control_cache_info *pI;

	if (phr->error)
		return;

	if (!find_control(phm->obj_index, p_cache, &pI)) {
		HPI_DEBUG_LOG(VERBOSE,
			"HPICMN find_control() failed for adap %d\n",
			phm->adapter_index);
		return;
	}

	/* pC is the default cached control strucure.
	   May be cast to something else in the following switch statement.
	 */
	pC = (struct hpi_control_cache_single *)pI;

	switch (pI->control_type) {
	case HPI_CONTROL_VOLUME:
		if (phm->u.c.attribute == HPI_VOLUME_GAIN) {
			pC->u.vol.an_log[0] = phr->u.c.an_log_value[0];
			pC->u.vol.an_log[1] = phr->u.c.an_log_value[1];
		} else if (phm->u.c.attribute == HPI_VOLUME_MUTE) {
			if (phm->u.c.param1)
				pC->u.vol.flags |= HPI_VOLUME_FLAG_MUTED;
			else
				pC->u.vol.flags &= ~HPI_VOLUME_FLAG_MUTED;
		}
		break;
	case HPI_CONTROL_MULTIPLEXER:
		/* mux does not return its setting on Set command. */
		if (phm->u.c.attribute == HPI_MULTIPLEXER_SOURCE) {
			pC->u.mux.source_node_type = (u16)phm->u.c.param1;
			pC->u.mux.source_node_index = (u16)phm->u.c.param2;
		}
		break;
	case HPI_CONTROL_CHANNEL_MODE:
		/* mode does not return its setting on Set command. */
		if (phm->u.c.attribute == HPI_CHANNEL_MODE_MODE)
			pC->u.mode.mode = (u16)phm->u.c.param1;
		break;
	case HPI_CONTROL_LEVEL:
		if (phm->u.c.attribute == HPI_LEVEL_GAIN) {
			pC->u.vol.an_log[0] = phr->u.c.an_log_value[0];
			pC->u.vol.an_log[1] = phr->u.c.an_log_value[1];
		}
		break;
	case HPI_CONTROL_MICROPHONE:
		if (phm->u.c.attribute == HPI_MICROPHONE_PHANTOM_POWER)
			pC->u.microphone.phantom_state = (u16)phm->u.c.param1;
		break;
	case HPI_CONTROL_AESEBU_TRANSMITTER:
		if (phm->u.c.attribute == HPI_AESEBUTX_FORMAT)
			pC->u.aes3tx.format = phm->u.c.param1;
		break;
	case HPI_CONTROL_AESEBU_RECEIVER:
		if (phm->u.c.attribute == HPI_AESEBURX_FORMAT)
			pC->u.aes3rx.format = phm->u.c.param1;
		break;
	case HPI_CONTROL_SAMPLECLOCK:
		if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE)
			pC->u.clk.source = (u16)phm->u.c.param1;
		else if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE_INDEX)
			pC->u.clk.source_index = (u16)phm->u.c.param1;
		else if (phm->u.c.attribute == HPI_SAMPLECLOCK_SAMPLERATE)
			pC->u.clk.sample_rate = phm->u.c.param1;
		break;
	default:
		break;
	}
}

struct hpi_control_cache *hpi_alloc_control_cache(const u32 control_count,
	const u32 size_in_bytes, u8 *p_dsp_control_buffer)
{
	struct hpi_control_cache *p_cache =
		kmalloc(sizeof(*p_cache), GFP_KERNEL);
	if (!p_cache)
		return NULL;

	p_cache->p_info =
		kmalloc(sizeof(*p_cache->p_info) * control_count, GFP_KERNEL);
	if (!p_cache->p_info) {
		kfree(p_cache);
		return NULL;
	}
	memset(p_cache->p_info, 0, sizeof(*p_cache->p_info) * control_count);
	p_cache->cache_size_in_bytes = size_in_bytes;
	p_cache->control_count = control_count;
	p_cache->p_cache = p_dsp_control_buffer;
	p_cache->init = 0;
	return p_cache;
}

void hpi_free_control_cache(struct hpi_control_cache *p_cache)
{
	if (p_cache) {
		kfree(p_cache->p_info);
		kfree(p_cache);
	}
}

static void subsys_message(struct hpi_message *phm, struct hpi_response *phr)
{
	hpi_init_response(phr, HPI_OBJ_SUBSYSTEM, phm->function, 0);

	switch (phm->function) {
	case HPI_SUBSYS_OPEN:
	case HPI_SUBSYS_CLOSE:
	case HPI_SUBSYS_DRIVER_UNLOAD:
		break;
	case HPI_SUBSYS_DRIVER_LOAD:
		wipe_adapter_list();
		hpios_alistlock_init(&adapters);
		break;
	case HPI_SUBSYS_GET_ADAPTER:
		subsys_get_adapter(phm, phr);
		break;
	case HPI_SUBSYS_GET_NUM_ADAPTERS:
		phr->u.s.num_adapters = adapters.gw_num_adapters;
		break;
	case HPI_SUBSYS_CREATE_ADAPTER:
	case HPI_SUBSYS_DELETE_ADAPTER:
		break;
	default:
		phr->error = HPI_ERROR_INVALID_FUNC;
		break;
	}
}

void HPI_COMMON(struct hpi_message *phm, struct hpi_response *phr)
{
	switch (phm->type) {
	case HPI_TYPE_MESSAGE:
		switch (phm->object) {
		case HPI_OBJ_SUBSYSTEM:
			subsys_message(phm, phr);
			break;
		}
		break;

	default:
		phr->error = HPI_ERROR_INVALID_TYPE;
		break;
	}
}
OpenPOWER on IntegriCloud