1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  ALSA driver for Echoaudio soundcards.
4  *  Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it>
5  *  Copyright (C) 2020 Mark Hills <mark@xwax.org>
6  */
7 
8 #include <linux/module.h>
9 
10 MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>");
11 MODULE_LICENSE("GPL v2");
12 MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver");
13 MODULE_DEVICE_TABLE(pci, snd_echo_ids);
14 
15 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
16 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
17 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
18 
19 module_param_array(index, int, NULL, 0444);
20 MODULE_PARM_DESC(index, "Index value for " ECHOCARD_NAME " soundcard.");
21 module_param_array(id, charp, NULL, 0444);
22 MODULE_PARM_DESC(id, "ID string for " ECHOCARD_NAME " soundcard.");
23 module_param_array(enable, bool, NULL, 0444);
24 MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard.");
25 
26 static const unsigned int channels_list[10] = {1, 2, 4, 6, 8, 10, 12, 14, 16, 999999};
27 static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800, 100, 1);
28 
29 
30 
get_firmware(const struct firmware ** fw_entry,struct echoaudio * chip,const short fw_index)31 static int get_firmware(const struct firmware **fw_entry,
32 			struct echoaudio *chip, const short fw_index)
33 {
34 	int err;
35 	char name[30];
36 
37 #ifdef CONFIG_PM_SLEEP
38 	if (chip->fw_cache[fw_index]) {
39 		dev_dbg(chip->card->dev,
40 			"firmware requested: %s is cached\n",
41 			card_fw[fw_index].data);
42 		*fw_entry = chip->fw_cache[fw_index];
43 		return 0;
44 	}
45 #endif
46 
47 	dev_dbg(chip->card->dev,
48 		"firmware requested: %s\n", card_fw[fw_index].data);
49 	snprintf(name, sizeof(name), "ea/%s", card_fw[fw_index].data);
50 	err = request_firmware(fw_entry, name, &chip->pci->dev);
51 	if (err < 0)
52 		dev_err(chip->card->dev,
53 			"get_firmware(): Firmware not available (%d)\n", err);
54 #ifdef CONFIG_PM_SLEEP
55 	else
56 		chip->fw_cache[fw_index] = *fw_entry;
57 #endif
58 	return err;
59 }
60 
61 
62 
free_firmware(const struct firmware * fw_entry,struct echoaudio * chip)63 static void free_firmware(const struct firmware *fw_entry,
64 			  struct echoaudio *chip)
65 {
66 #ifdef CONFIG_PM_SLEEP
67 	dev_dbg(chip->card->dev, "firmware not released (kept in cache)\n");
68 #else
69 	release_firmware(fw_entry);
70 #endif
71 }
72 
73 
74 
free_firmware_cache(struct echoaudio * chip)75 static void free_firmware_cache(struct echoaudio *chip)
76 {
77 #ifdef CONFIG_PM_SLEEP
78 	int i;
79 
80 	for (i = 0; i < 8 ; i++)
81 		if (chip->fw_cache[i]) {
82 			release_firmware(chip->fw_cache[i]);
83 			dev_dbg(chip->card->dev, "release_firmware(%d)\n", i);
84 		}
85 
86 #endif
87 }
88 
89 
90 
91 /******************************************************************************
92 	PCM interface
93 ******************************************************************************/
94 
audiopipe_free(struct snd_pcm_runtime * runtime)95 static void audiopipe_free(struct snd_pcm_runtime *runtime)
96 {
97 	struct audiopipe *pipe = runtime->private_data;
98 
99 	if (pipe->sgpage.area)
100 		snd_dma_free_pages(&pipe->sgpage);
101 	kfree(pipe);
102 }
103 
104 
105 
hw_rule_capture_format_by_channels(struct snd_pcm_hw_params * params,struct snd_pcm_hw_rule * rule)106 static int hw_rule_capture_format_by_channels(struct snd_pcm_hw_params *params,
107 					      struct snd_pcm_hw_rule *rule)
108 {
109 	struct snd_interval *c = hw_param_interval(params,
110 						   SNDRV_PCM_HW_PARAM_CHANNELS);
111 	struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
112 	struct snd_mask fmt;
113 
114 	snd_mask_any(&fmt);
115 
116 #ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
117 	/* >=2 channels cannot be S32_BE */
118 	if (c->min == 2) {
119 		fmt.bits[0] &= ~SNDRV_PCM_FMTBIT_S32_BE;
120 		return snd_mask_refine(f, &fmt);
121 	}
122 #endif
123 	/* > 2 channels cannot be U8 and S32_BE */
124 	if (c->min > 2) {
125 		fmt.bits[0] &= ~(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_BE);
126 		return snd_mask_refine(f, &fmt);
127 	}
128 	/* Mono is ok with any format */
129 	return 0;
130 }
131 
132 
133 
hw_rule_capture_channels_by_format(struct snd_pcm_hw_params * params,struct snd_pcm_hw_rule * rule)134 static int hw_rule_capture_channels_by_format(struct snd_pcm_hw_params *params,
135 					      struct snd_pcm_hw_rule *rule)
136 {
137 	struct snd_interval *c = hw_param_interval(params,
138 						   SNDRV_PCM_HW_PARAM_CHANNELS);
139 	struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
140 	struct snd_interval ch;
141 
142 	snd_interval_any(&ch);
143 
144 	/* S32_BE is mono (and stereo) only */
145 	if (f->bits[0] == SNDRV_PCM_FMTBIT_S32_BE) {
146 		ch.min = 1;
147 #ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
148 		ch.max = 2;
149 #else
150 		ch.max = 1;
151 #endif
152 		ch.integer = 1;
153 		return snd_interval_refine(c, &ch);
154 	}
155 	/* U8 can be only mono or stereo */
156 	if (f->bits[0] == SNDRV_PCM_FMTBIT_U8) {
157 		ch.min = 1;
158 		ch.max = 2;
159 		ch.integer = 1;
160 		return snd_interval_refine(c, &ch);
161 	}
162 	/* S16_LE, S24_3LE and S32_LE support any number of channels. */
163 	return 0;
164 }
165 
166 
167 
hw_rule_playback_format_by_channels(struct snd_pcm_hw_params * params,struct snd_pcm_hw_rule * rule)168 static int hw_rule_playback_format_by_channels(struct snd_pcm_hw_params *params,
169 					       struct snd_pcm_hw_rule *rule)
170 {
171 	struct snd_interval *c = hw_param_interval(params,
172 						   SNDRV_PCM_HW_PARAM_CHANNELS);
173 	struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
174 	struct snd_mask fmt;
175 	u64 fmask;
176 	snd_mask_any(&fmt);
177 
178 	fmask = fmt.bits[0] + ((u64)fmt.bits[1] << 32);
179 
180 	/* >2 channels must be S16_LE, S24_3LE or S32_LE */
181 	if (c->min > 2) {
182 		fmask &= SNDRV_PCM_FMTBIT_S16_LE |
183 			 SNDRV_PCM_FMTBIT_S24_3LE |
184 			 SNDRV_PCM_FMTBIT_S32_LE;
185 	/* 1 channel must be S32_BE or S32_LE */
186 	} else if (c->max == 1)
187 		fmask &= SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE;
188 #ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
189 	/* 2 channels cannot be S32_BE */
190 	else if (c->min == 2 && c->max == 2)
191 		fmask &= ~SNDRV_PCM_FMTBIT_S32_BE;
192 #endif
193 	else
194 		return 0;
195 
196 	fmt.bits[0] &= (u32)fmask;
197 	fmt.bits[1] &= (u32)(fmask >> 32);
198 	return snd_mask_refine(f, &fmt);
199 }
200 
201 
202 
hw_rule_playback_channels_by_format(struct snd_pcm_hw_params * params,struct snd_pcm_hw_rule * rule)203 static int hw_rule_playback_channels_by_format(struct snd_pcm_hw_params *params,
204 					       struct snd_pcm_hw_rule *rule)
205 {
206 	struct snd_interval *c = hw_param_interval(params,
207 						   SNDRV_PCM_HW_PARAM_CHANNELS);
208 	struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
209 	struct snd_interval ch;
210 	u64 fmask;
211 
212 	snd_interval_any(&ch);
213 	ch.integer = 1;
214 	fmask = f->bits[0] + ((u64)f->bits[1] << 32);
215 
216 	/* S32_BE is mono (and stereo) only */
217 	if (fmask == SNDRV_PCM_FMTBIT_S32_BE) {
218 		ch.min = 1;
219 #ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
220 		ch.max = 2;
221 #else
222 		ch.max = 1;
223 #endif
224 	/* U8 is stereo only */
225 	} else if (fmask == SNDRV_PCM_FMTBIT_U8)
226 		ch.min = ch.max = 2;
227 	/* S16_LE and S24_3LE must be at least stereo */
228 	else if (!(fmask & ~(SNDRV_PCM_FMTBIT_S16_LE |
229 			       SNDRV_PCM_FMTBIT_S24_3LE)))
230 		ch.min = 2;
231 	else
232 		return 0;
233 
234 	return snd_interval_refine(c, &ch);
235 }
236 
237 
238 
239 /* Since the sample rate is a global setting, do allow the user to change the
240 sample rate only if there is only one pcm device open. */
hw_rule_sample_rate(struct snd_pcm_hw_params * params,struct snd_pcm_hw_rule * rule)241 static int hw_rule_sample_rate(struct snd_pcm_hw_params *params,
242 			       struct snd_pcm_hw_rule *rule)
243 {
244 	struct snd_interval *rate = hw_param_interval(params,
245 						      SNDRV_PCM_HW_PARAM_RATE);
246 	struct echoaudio *chip = rule->private;
247 	struct snd_interval fixed;
248 	int err;
249 
250 	mutex_lock(&chip->mode_mutex);
251 
252 	if (chip->can_set_rate) {
253 		err = 0;
254 	} else {
255 		snd_interval_any(&fixed);
256 		fixed.min = fixed.max = chip->sample_rate;
257 		err = snd_interval_refine(rate, &fixed);
258 	}
259 
260 	mutex_unlock(&chip->mode_mutex);
261 	return err;
262 }
263 
264 
pcm_open(struct snd_pcm_substream * substream,signed char max_channels)265 static int pcm_open(struct snd_pcm_substream *substream,
266 		    signed char max_channels)
267 {
268 	struct echoaudio *chip;
269 	struct snd_pcm_runtime *runtime;
270 	struct audiopipe *pipe;
271 	int err, i;
272 
273 	if (max_channels <= 0)
274 		return -EAGAIN;
275 
276 	chip = snd_pcm_substream_chip(substream);
277 	runtime = substream->runtime;
278 
279 	pipe = kzalloc(sizeof(struct audiopipe), GFP_KERNEL);
280 	if (!pipe)
281 		return -ENOMEM;
282 	pipe->index = -1;		/* Not configured yet */
283 
284 	/* Set up hw capabilities and contraints */
285 	memcpy(&pipe->hw, &pcm_hardware_skel, sizeof(struct snd_pcm_hardware));
286 	dev_dbg(chip->card->dev, "max_channels=%d\n", max_channels);
287 	pipe->constr.list = channels_list;
288 	pipe->constr.mask = 0;
289 	for (i = 0; channels_list[i] <= max_channels; i++);
290 	pipe->constr.count = i;
291 	if (pipe->hw.channels_max > max_channels)
292 		pipe->hw.channels_max = max_channels;
293 	if (chip->digital_mode == DIGITAL_MODE_ADAT) {
294 		pipe->hw.rate_max = 48000;
295 		pipe->hw.rates &= SNDRV_PCM_RATE_8000_48000;
296 	}
297 
298 	runtime->hw = pipe->hw;
299 	runtime->private_data = pipe;
300 	runtime->private_free = audiopipe_free;
301 	snd_pcm_set_sync(substream);
302 
303 	/* Only mono and any even number of channels are allowed */
304 	err = snd_pcm_hw_constraint_list(runtime, 0,
305 					 SNDRV_PCM_HW_PARAM_CHANNELS,
306 					 &pipe->constr);
307 	if (err < 0)
308 		return err;
309 
310 	/* All periods should have the same size */
311 	err = snd_pcm_hw_constraint_integer(runtime,
312 					    SNDRV_PCM_HW_PARAM_PERIODS);
313 	if (err < 0)
314 		return err;
315 
316 	/* The hw accesses memory in chunks 32 frames long and they should be
317 	32-bytes-aligned. It's not a requirement, but it seems that IRQs are
318 	generated with a resolution of 32 frames. Thus we need the following */
319 	err = snd_pcm_hw_constraint_step(runtime, 0,
320 					 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 32);
321 	if (err < 0)
322 		return err;
323 	err = snd_pcm_hw_constraint_step(runtime, 0,
324 					 SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32);
325 	if (err < 0)
326 		return err;
327 
328 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
329 				  SNDRV_PCM_HW_PARAM_RATE,
330 				  hw_rule_sample_rate, chip,
331 				  SNDRV_PCM_HW_PARAM_RATE, -1);
332 	if (err < 0)
333 		return err;
334 
335 	/* Allocate a page for the scatter-gather list */
336 	err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
337 				  &chip->pci->dev,
338 				  PAGE_SIZE, &pipe->sgpage);
339 	if (err < 0) {
340 		dev_err(chip->card->dev, "s-g list allocation failed\n");
341 		return err;
342 	}
343 
344 	/*
345 	 * Sole ownership required to set the rate
346 	 */
347 
348 	dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d",
349 		chip->opencount, chip->can_set_rate, chip->rate_set);
350 
351 	chip->opencount++;
352 	if (chip->opencount > 1 && chip->rate_set)
353 		chip->can_set_rate = 0;
354 
355 	return 0;
356 }
357 
358 
359 
pcm_analog_in_open(struct snd_pcm_substream * substream)360 static int pcm_analog_in_open(struct snd_pcm_substream *substream)
361 {
362 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
363 	int err;
364 
365 	err = pcm_open(substream,
366 		       num_analog_busses_in(chip) - substream->number);
367 	if (err < 0)
368 		return err;
369 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
370 				  SNDRV_PCM_HW_PARAM_CHANNELS,
371 				  hw_rule_capture_channels_by_format, NULL,
372 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
373 	if (err < 0)
374 		return err;
375 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
376 				  SNDRV_PCM_HW_PARAM_FORMAT,
377 				  hw_rule_capture_format_by_channels, NULL,
378 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
379 	if (err < 0)
380 		return err;
381 
382 	return 0;
383 }
384 
385 
386 
pcm_analog_out_open(struct snd_pcm_substream * substream)387 static int pcm_analog_out_open(struct snd_pcm_substream *substream)
388 {
389 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
390 	int max_channels, err;
391 
392 #ifdef ECHOCARD_HAS_VMIXER
393 	max_channels = num_pipes_out(chip);
394 #else
395 	max_channels = num_analog_busses_out(chip);
396 #endif
397 	err = pcm_open(substream, max_channels - substream->number);
398 	if (err < 0)
399 		return err;
400 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
401 				  SNDRV_PCM_HW_PARAM_CHANNELS,
402 				  hw_rule_playback_channels_by_format,
403 				  NULL,
404 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
405 	if (err < 0)
406 		return err;
407 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
408 				  SNDRV_PCM_HW_PARAM_FORMAT,
409 				  hw_rule_playback_format_by_channels,
410 				  NULL,
411 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
412 	if (err < 0)
413 		return err;
414 
415 	return 0;
416 }
417 
418 
419 
420 #ifdef ECHOCARD_HAS_DIGITAL_IO
421 
pcm_digital_in_open(struct snd_pcm_substream * substream)422 static int pcm_digital_in_open(struct snd_pcm_substream *substream)
423 {
424 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
425 	int err, max_channels;
426 
427 	max_channels = num_digital_busses_in(chip) - substream->number;
428 	mutex_lock(&chip->mode_mutex);
429 	if (chip->digital_mode == DIGITAL_MODE_ADAT)
430 		err = pcm_open(substream, max_channels);
431 	else	/* If the card has ADAT, subtract the 6 channels
432 		 * that S/PDIF doesn't have
433 		 */
434 		err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
435 
436 	if (err < 0)
437 		goto din_exit;
438 
439 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
440 				  SNDRV_PCM_HW_PARAM_CHANNELS,
441 				  hw_rule_capture_channels_by_format, NULL,
442 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
443 	if (err < 0)
444 		goto din_exit;
445 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
446 				  SNDRV_PCM_HW_PARAM_FORMAT,
447 				  hw_rule_capture_format_by_channels, NULL,
448 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
449 	if (err < 0)
450 		goto din_exit;
451 
452 din_exit:
453 	mutex_unlock(&chip->mode_mutex);
454 	return err;
455 }
456 
457 
458 
459 #ifndef ECHOCARD_HAS_VMIXER	/* See the note in snd_echo_new_pcm() */
460 
pcm_digital_out_open(struct snd_pcm_substream * substream)461 static int pcm_digital_out_open(struct snd_pcm_substream *substream)
462 {
463 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
464 	int err, max_channels;
465 
466 	max_channels = num_digital_busses_out(chip) - substream->number;
467 	mutex_lock(&chip->mode_mutex);
468 	if (chip->digital_mode == DIGITAL_MODE_ADAT)
469 		err = pcm_open(substream, max_channels);
470 	else	/* If the card has ADAT, subtract the 6 channels
471 		 * that S/PDIF doesn't have
472 		 */
473 		err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
474 
475 	if (err < 0)
476 		goto dout_exit;
477 
478 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
479 				  SNDRV_PCM_HW_PARAM_CHANNELS,
480 				  hw_rule_playback_channels_by_format,
481 				  NULL, SNDRV_PCM_HW_PARAM_FORMAT,
482 				  -1);
483 	if (err < 0)
484 		goto dout_exit;
485 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
486 				  SNDRV_PCM_HW_PARAM_FORMAT,
487 				  hw_rule_playback_format_by_channels,
488 				  NULL, SNDRV_PCM_HW_PARAM_CHANNELS,
489 				  -1);
490 	if (err < 0)
491 		goto dout_exit;
492 
493 dout_exit:
494 	mutex_unlock(&chip->mode_mutex);
495 	return err;
496 }
497 
498 #endif /* !ECHOCARD_HAS_VMIXER */
499 
500 #endif /* ECHOCARD_HAS_DIGITAL_IO */
501 
502 
503 
pcm_close(struct snd_pcm_substream * substream)504 static int pcm_close(struct snd_pcm_substream *substream)
505 {
506 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
507 
508 	/* Nothing to do here. Audio is already off and pipe will be
509 	 * freed by its callback
510 	 */
511 
512 	mutex_lock(&chip->mode_mutex);
513 
514 	dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d",
515 		chip->opencount, chip->can_set_rate, chip->rate_set);
516 
517 	chip->opencount--;
518 
519 	switch (chip->opencount) {
520 	case 1:
521 		chip->can_set_rate = 1;
522 		break;
523 
524 	case 0:
525 		chip->rate_set = 0;
526 		break;
527 	}
528 
529 	mutex_unlock(&chip->mode_mutex);
530 	return 0;
531 }
532 
533 
534 
535 /* Channel allocation and scatter-gather list setup */
init_engine(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params,int pipe_index,int interleave)536 static int init_engine(struct snd_pcm_substream *substream,
537 		       struct snd_pcm_hw_params *hw_params,
538 		       int pipe_index, int interleave)
539 {
540 	struct echoaudio *chip;
541 	int err, per, rest, page, edge, offs;
542 	struct audiopipe *pipe;
543 
544 	chip = snd_pcm_substream_chip(substream);
545 	pipe = (struct audiopipe *) substream->runtime->private_data;
546 
547 	/* Sets up che hardware. If it's already initialized, reset and
548 	 * redo with the new parameters
549 	 */
550 	spin_lock_irq(&chip->lock);
551 	if (pipe->index >= 0) {
552 		dev_dbg(chip->card->dev, "hwp_ie free(%d)\n", pipe->index);
553 		err = free_pipes(chip, pipe);
554 		snd_BUG_ON(err);
555 		chip->substream[pipe->index] = NULL;
556 	}
557 
558 	err = allocate_pipes(chip, pipe, pipe_index, interleave);
559 	if (err < 0) {
560 		spin_unlock_irq(&chip->lock);
561 		dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n",
562 			pipe_index, err);
563 		return err;
564 	}
565 	spin_unlock_irq(&chip->lock);
566 	dev_dbg(chip->card->dev, "allocate_pipes()=%d\n", pipe_index);
567 
568 	dev_dbg(chip->card->dev,
569 		"pcm_hw_params (bufsize=%dB periods=%d persize=%dB)\n",
570 		params_buffer_bytes(hw_params), params_periods(hw_params),
571 		params_period_bytes(hw_params));
572 
573 	sglist_init(chip, pipe);
574 	edge = PAGE_SIZE;
575 	for (offs = page = per = 0; offs < params_buffer_bytes(hw_params);
576 	     per++) {
577 		rest = params_period_bytes(hw_params);
578 		if (offs + rest > params_buffer_bytes(hw_params))
579 			rest = params_buffer_bytes(hw_params) - offs;
580 		while (rest) {
581 			dma_addr_t addr;
582 			addr = snd_pcm_sgbuf_get_addr(substream, offs);
583 			if (rest <= edge - offs) {
584 				sglist_add_mapping(chip, pipe, addr, rest);
585 				sglist_add_irq(chip, pipe);
586 				offs += rest;
587 				rest = 0;
588 			} else {
589 				sglist_add_mapping(chip, pipe, addr,
590 						   edge - offs);
591 				rest -= edge - offs;
592 				offs = edge;
593 			}
594 			if (offs == edge) {
595 				edge += PAGE_SIZE;
596 				page++;
597 			}
598 		}
599 	}
600 
601 	/* Close the ring buffer */
602 	sglist_wrap(chip, pipe);
603 
604 	/* This stuff is used by the irq handler, so it must be
605 	 * initialized before chip->substream
606 	 */
607 	pipe->last_period = 0;
608 	pipe->last_counter = 0;
609 	pipe->position = 0;
610 	smp_wmb();
611 	chip->substream[pipe_index] = substream;
612 	chip->rate_set = 1;
613 	spin_lock_irq(&chip->lock);
614 	set_sample_rate(chip, hw_params->rate_num / hw_params->rate_den);
615 	spin_unlock_irq(&chip->lock);
616 	return 0;
617 }
618 
619 
620 
pcm_analog_in_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)621 static int pcm_analog_in_hw_params(struct snd_pcm_substream *substream,
622 				   struct snd_pcm_hw_params *hw_params)
623 {
624 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
625 
626 	return init_engine(substream, hw_params, px_analog_in(chip) +
627 			substream->number, params_channels(hw_params));
628 }
629 
630 
631 
pcm_analog_out_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)632 static int pcm_analog_out_hw_params(struct snd_pcm_substream *substream,
633 				    struct snd_pcm_hw_params *hw_params)
634 {
635 	return init_engine(substream, hw_params, substream->number,
636 			   params_channels(hw_params));
637 }
638 
639 
640 
641 #ifdef ECHOCARD_HAS_DIGITAL_IO
642 
pcm_digital_in_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)643 static int pcm_digital_in_hw_params(struct snd_pcm_substream *substream,
644 				    struct snd_pcm_hw_params *hw_params)
645 {
646 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
647 
648 	return init_engine(substream, hw_params, px_digital_in(chip) +
649 			substream->number, params_channels(hw_params));
650 }
651 
652 
653 
654 #ifndef ECHOCARD_HAS_VMIXER	/* See the note in snd_echo_new_pcm() */
pcm_digital_out_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)655 static int pcm_digital_out_hw_params(struct snd_pcm_substream *substream,
656 				     struct snd_pcm_hw_params *hw_params)
657 {
658 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
659 
660 	return init_engine(substream, hw_params, px_digital_out(chip) +
661 			substream->number, params_channels(hw_params));
662 }
663 #endif /* !ECHOCARD_HAS_VMIXER */
664 
665 #endif /* ECHOCARD_HAS_DIGITAL_IO */
666 
667 
668 
pcm_hw_free(struct snd_pcm_substream * substream)669 static int pcm_hw_free(struct snd_pcm_substream *substream)
670 {
671 	struct echoaudio *chip;
672 	struct audiopipe *pipe;
673 
674 	chip = snd_pcm_substream_chip(substream);
675 	pipe = (struct audiopipe *) substream->runtime->private_data;
676 
677 	spin_lock_irq(&chip->lock);
678 	if (pipe->index >= 0) {
679 		dev_dbg(chip->card->dev, "pcm_hw_free(%d)\n", pipe->index);
680 		free_pipes(chip, pipe);
681 		chip->substream[pipe->index] = NULL;
682 		pipe->index = -1;
683 	}
684 	spin_unlock_irq(&chip->lock);
685 
686 	return 0;
687 }
688 
689 
690 
pcm_prepare(struct snd_pcm_substream * substream)691 static int pcm_prepare(struct snd_pcm_substream *substream)
692 {
693 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
694 	struct snd_pcm_runtime *runtime = substream->runtime;
695 	struct audioformat format;
696 	int pipe_index = ((struct audiopipe *)runtime->private_data)->index;
697 
698 	dev_dbg(chip->card->dev, "Prepare rate=%d format=%d channels=%d\n",
699 		runtime->rate, runtime->format, runtime->channels);
700 	format.interleave = runtime->channels;
701 	format.data_are_bigendian = 0;
702 	format.mono_to_stereo = 0;
703 	switch (runtime->format) {
704 	case SNDRV_PCM_FORMAT_U8:
705 		format.bits_per_sample = 8;
706 		break;
707 	case SNDRV_PCM_FORMAT_S16_LE:
708 		format.bits_per_sample = 16;
709 		break;
710 	case SNDRV_PCM_FORMAT_S24_3LE:
711 		format.bits_per_sample = 24;
712 		break;
713 	case SNDRV_PCM_FORMAT_S32_BE:
714 		format.data_are_bigendian = 1;
715 		fallthrough;
716 	case SNDRV_PCM_FORMAT_S32_LE:
717 		format.bits_per_sample = 32;
718 		break;
719 	default:
720 		dev_err(chip->card->dev,
721 			"Prepare error: unsupported format %d\n",
722 			runtime->format);
723 		return -EINVAL;
724 	}
725 
726 	if (snd_BUG_ON(pipe_index >= px_num(chip)))
727 		return -EINVAL;
728 
729 	/*
730 	 * We passed checks we can do independently; now take
731 	 * exclusive control
732 	 */
733 
734 	spin_lock_irq(&chip->lock);
735 
736 	if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) {
737 		spin_unlock_irq(&chip->lock);
738 		return -EINVAL;
739 	}
740 
741 	set_audio_format(chip, pipe_index, &format);
742 	spin_unlock_irq(&chip->lock);
743 
744 	return 0;
745 }
746 
747 
748 
pcm_trigger(struct snd_pcm_substream * substream,int cmd)749 static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
750 {
751 	struct echoaudio *chip = snd_pcm_substream_chip(substream);
752 	struct audiopipe *pipe;
753 	int i, err;
754 	u32 channelmask = 0;
755 	struct snd_pcm_substream *s;
756 
757 	snd_pcm_group_for_each_entry(s, substream) {
758 		for (i = 0; i < DSP_MAXPIPES; i++) {
759 			if (s == chip->substream[i]) {
760 				channelmask |= 1 << i;
761 				snd_pcm_trigger_done(s, substream);
762 			}
763 		}
764 	}
765 
766 	spin_lock(&chip->lock);
767 	switch (cmd) {
768 	case SNDRV_PCM_TRIGGER_RESUME:
769 	case SNDRV_PCM_TRIGGER_START:
770 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
771 		for (i = 0; i < DSP_MAXPIPES; i++) {
772 			if (channelmask & (1 << i)) {
773 				pipe = chip->substream[i]->runtime->private_data;
774 				switch (pipe->state) {
775 				case PIPE_STATE_STOPPED:
776 					pipe->last_period = 0;
777 					pipe->last_counter = 0;
778 					pipe->position = 0;
779 					*pipe->dma_counter = 0;
780 					fallthrough;
781 				case PIPE_STATE_PAUSED:
782 					pipe->state = PIPE_STATE_STARTED;
783 					break;
784 				case PIPE_STATE_STARTED:
785 					break;
786 				}
787 			}
788 		}
789 		err = start_transport(chip, channelmask,
790 				      chip->pipe_cyclic_mask);
791 		break;
792 	case SNDRV_PCM_TRIGGER_SUSPEND:
793 	case SNDRV_PCM_TRIGGER_STOP:
794 		for (i = 0; i < DSP_MAXPIPES; i++) {
795 			if (channelmask & (1 << i)) {
796 				pipe = chip->substream[i]->runtime->private_data;
797 				pipe->state = PIPE_STATE_STOPPED;
798 			}
799 		}
800 		err = stop_transport(chip, channelmask);
801 		break;
802 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
803 		for (i = 0; i < DSP_MAXPIPES; i++) {
804 			if (channelmask & (1 << i)) {
805 				pipe = chip->substream[i]->runtime->private_data;
806 				pipe->state = PIPE_STATE_PAUSED;
807 			}
808 		}
809 		err = pause_transport(chip, channelmask);
810 		break;
811 	default:
812 		err = -EINVAL;
813 	}
814 	spin_unlock(&chip->lock);
815 	return err;
816 }
817 
818 
819 
pcm_pointer(struct snd_pcm_substream * substream)820 static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream)
821 {
822 	struct snd_pcm_runtime *runtime = substream->runtime;
823 	struct audiopipe *pipe = runtime->private_data;
824 	u32 counter, step;
825 
826 	/*
827 	 * IRQ handling runs concurrently. Do not share tracking of
828 	 * counter with it, which would race or require locking
829 	 */
830 
831 	counter = le32_to_cpu(*pipe->dma_counter);  /* presumed atomic */
832 
833 	step = counter - pipe->last_counter;  /* handles wrapping */
834 	pipe->last_counter = counter;
835 
836 	/* counter doesn't neccessarily wrap on a multiple of
837 	 * buffer_size, so can't derive the position; must
838 	 * accumulate */
839 
840 	pipe->position += step;
841 	pipe->position %= frames_to_bytes(runtime, runtime->buffer_size); /* wrap */
842 
843 	return bytes_to_frames(runtime, pipe->position);
844 }
845 
846 
847 
848 /* pcm *_ops structures */
849 static const struct snd_pcm_ops analog_playback_ops = {
850 	.open = pcm_analog_out_open,
851 	.close = pcm_close,
852 	.hw_params = pcm_analog_out_hw_params,
853 	.hw_free = pcm_hw_free,
854 	.prepare = pcm_prepare,
855 	.trigger = pcm_trigger,
856 	.pointer = pcm_pointer,
857 };
858 static const struct snd_pcm_ops analog_capture_ops = {
859 	.open = pcm_analog_in_open,
860 	.close = pcm_close,
861 	.hw_params = pcm_analog_in_hw_params,
862 	.hw_free = pcm_hw_free,
863 	.prepare = pcm_prepare,
864 	.trigger = pcm_trigger,
865 	.pointer = pcm_pointer,
866 };
867 #ifdef ECHOCARD_HAS_DIGITAL_IO
868 #ifndef ECHOCARD_HAS_VMIXER
869 static const struct snd_pcm_ops digital_playback_ops = {
870 	.open = pcm_digital_out_open,
871 	.close = pcm_close,
872 	.hw_params = pcm_digital_out_hw_params,
873 	.hw_free = pcm_hw_free,
874 	.prepare = pcm_prepare,
875 	.trigger = pcm_trigger,
876 	.pointer = pcm_pointer,
877 };
878 #endif /* !ECHOCARD_HAS_VMIXER */
879 static const struct snd_pcm_ops digital_capture_ops = {
880 	.open = pcm_digital_in_open,
881 	.close = pcm_close,
882 	.hw_params = pcm_digital_in_hw_params,
883 	.hw_free = pcm_hw_free,
884 	.prepare = pcm_prepare,
885 	.trigger = pcm_trigger,
886 	.pointer = pcm_pointer,
887 };
888 #endif /* ECHOCARD_HAS_DIGITAL_IO */
889 
890 
891 
892 /* Preallocate memory only for the first substream because it's the most
893  * used one
894  */
snd_echo_preallocate_pages(struct snd_pcm * pcm,struct device * dev)895 static void snd_echo_preallocate_pages(struct snd_pcm *pcm, struct device *dev)
896 {
897 	struct snd_pcm_substream *ss;
898 	int stream;
899 
900 	for (stream = 0; stream < 2; stream++)
901 		for (ss = pcm->streams[stream].substream; ss; ss = ss->next)
902 			snd_pcm_set_managed_buffer(ss, SNDRV_DMA_TYPE_DEV_SG,
903 						   dev,
904 						   ss->number ? 0 : 128<<10,
905 						   256<<10);
906 }
907 
908 
909 
910 /*<--snd_echo_probe() */
snd_echo_new_pcm(struct echoaudio * chip)911 static int snd_echo_new_pcm(struct echoaudio *chip)
912 {
913 	struct snd_pcm *pcm;
914 	int err;
915 
916 #ifdef ECHOCARD_HAS_VMIXER
917 	/* This card has a Vmixer, that is there is no direct mapping from PCM
918 	streams to physical outputs. The user can mix the streams as he wishes
919 	via control interface and it's possible to send any stream to any
920 	output, thus it makes no sense to keep analog and digital outputs
921 	separated */
922 
923 	/* PCM#0 Virtual outputs and analog inputs */
924 	err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip),
925 			  num_analog_busses_in(chip), &pcm);
926 	if (err < 0)
927 		return err;
928 	pcm->private_data = chip;
929 	chip->analog_pcm = pcm;
930 	strcpy(pcm->name, chip->card->shortname);
931 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
932 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
933 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
934 
935 #ifdef ECHOCARD_HAS_DIGITAL_IO
936 	/* PCM#1 Digital inputs, no outputs */
937 	err = snd_pcm_new(chip->card, "Digital PCM", 1, 0,
938 			  num_digital_busses_in(chip), &pcm);
939 	if (err < 0)
940 		return err;
941 	pcm->private_data = chip;
942 	chip->digital_pcm = pcm;
943 	strcpy(pcm->name, chip->card->shortname);
944 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
945 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
946 #endif /* ECHOCARD_HAS_DIGITAL_IO */
947 
948 #else /* ECHOCARD_HAS_VMIXER */
949 
950 	/* The card can manage substreams formed by analog and digital channels
951 	at the same time, but I prefer to keep analog and digital channels
952 	separated, because that mixed thing is confusing and useless. So we
953 	register two PCM devices: */
954 
955 	/* PCM#0 Analog i/o */
956 	err = snd_pcm_new(chip->card, "Analog PCM", 0,
957 			  num_analog_busses_out(chip),
958 			  num_analog_busses_in(chip), &pcm);
959 	if (err < 0)
960 		return err;
961 	pcm->private_data = chip;
962 	chip->analog_pcm = pcm;
963 	strcpy(pcm->name, chip->card->shortname);
964 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
965 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
966 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
967 
968 #ifdef ECHOCARD_HAS_DIGITAL_IO
969 	/* PCM#1 Digital i/o */
970 	err = snd_pcm_new(chip->card, "Digital PCM", 1,
971 			  num_digital_busses_out(chip),
972 			  num_digital_busses_in(chip), &pcm);
973 	if (err < 0)
974 		return err;
975 	pcm->private_data = chip;
976 	chip->digital_pcm = pcm;
977 	strcpy(pcm->name, chip->card->shortname);
978 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops);
979 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
980 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
981 #endif /* ECHOCARD_HAS_DIGITAL_IO */
982 
983 #endif /* ECHOCARD_HAS_VMIXER */
984 
985 	return 0;
986 }
987 
988 
989 
990 
991 /******************************************************************************
992 	Control interface
993 ******************************************************************************/
994 
995 #if !defined(ECHOCARD_HAS_VMIXER) || defined(ECHOCARD_HAS_LINE_OUT_GAIN)
996 
997 /******************* PCM output volume *******************/
snd_echo_output_gain_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)998 static int snd_echo_output_gain_info(struct snd_kcontrol *kcontrol,
999 				     struct snd_ctl_elem_info *uinfo)
1000 {
1001 	struct echoaudio *chip;
1002 
1003 	chip = snd_kcontrol_chip(kcontrol);
1004 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1005 	uinfo->count = num_busses_out(chip);
1006 	uinfo->value.integer.min = ECHOGAIN_MINOUT;
1007 	uinfo->value.integer.max = ECHOGAIN_MAXOUT;
1008 	return 0;
1009 }
1010 
snd_echo_output_gain_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1011 static int snd_echo_output_gain_get(struct snd_kcontrol *kcontrol,
1012 				    struct snd_ctl_elem_value *ucontrol)
1013 {
1014 	struct echoaudio *chip;
1015 	int c;
1016 
1017 	chip = snd_kcontrol_chip(kcontrol);
1018 	for (c = 0; c < num_busses_out(chip); c++)
1019 		ucontrol->value.integer.value[c] = chip->output_gain[c];
1020 	return 0;
1021 }
1022 
snd_echo_output_gain_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1023 static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol,
1024 				    struct snd_ctl_elem_value *ucontrol)
1025 {
1026 	struct echoaudio *chip;
1027 	int c, changed, gain;
1028 
1029 	changed = 0;
1030 	chip = snd_kcontrol_chip(kcontrol);
1031 	spin_lock_irq(&chip->lock);
1032 	for (c = 0; c < num_busses_out(chip); c++) {
1033 		gain = ucontrol->value.integer.value[c];
1034 		/* Ignore out of range values */
1035 		if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1036 			continue;
1037 		if (chip->output_gain[c] != gain) {
1038 			set_output_gain(chip, c, gain);
1039 			changed = 1;
1040 		}
1041 	}
1042 	if (changed)
1043 		update_output_line_level(chip);
1044 	spin_unlock_irq(&chip->lock);
1045 	return changed;
1046 }
1047 
1048 #ifdef ECHOCARD_HAS_LINE_OUT_GAIN
1049 /* On the Mia this one controls the line-out volume */
1050 static const struct snd_kcontrol_new snd_echo_line_output_gain = {
1051 	.name = "Line Playback Volume",
1052 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1053 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1054 		  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1055 	.info = snd_echo_output_gain_info,
1056 	.get = snd_echo_output_gain_get,
1057 	.put = snd_echo_output_gain_put,
1058 	.tlv = {.p = db_scale_output_gain},
1059 };
1060 #else
1061 static const struct snd_kcontrol_new snd_echo_pcm_output_gain = {
1062 	.name = "PCM Playback Volume",
1063 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1064 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1065 	.info = snd_echo_output_gain_info,
1066 	.get = snd_echo_output_gain_get,
1067 	.put = snd_echo_output_gain_put,
1068 	.tlv = {.p = db_scale_output_gain},
1069 };
1070 #endif
1071 
1072 #endif /* !ECHOCARD_HAS_VMIXER || ECHOCARD_HAS_LINE_OUT_GAIN */
1073 
1074 
1075 
1076 #ifdef ECHOCARD_HAS_INPUT_GAIN
1077 
1078 /******************* Analog input volume *******************/
snd_echo_input_gain_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1079 static int snd_echo_input_gain_info(struct snd_kcontrol *kcontrol,
1080 				    struct snd_ctl_elem_info *uinfo)
1081 {
1082 	struct echoaudio *chip;
1083 
1084 	chip = snd_kcontrol_chip(kcontrol);
1085 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1086 	uinfo->count = num_analog_busses_in(chip);
1087 	uinfo->value.integer.min = ECHOGAIN_MININP;
1088 	uinfo->value.integer.max = ECHOGAIN_MAXINP;
1089 	return 0;
1090 }
1091 
snd_echo_input_gain_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1092 static int snd_echo_input_gain_get(struct snd_kcontrol *kcontrol,
1093 				   struct snd_ctl_elem_value *ucontrol)
1094 {
1095 	struct echoaudio *chip;
1096 	int c;
1097 
1098 	chip = snd_kcontrol_chip(kcontrol);
1099 	for (c = 0; c < num_analog_busses_in(chip); c++)
1100 		ucontrol->value.integer.value[c] = chip->input_gain[c];
1101 	return 0;
1102 }
1103 
snd_echo_input_gain_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1104 static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol,
1105 				   struct snd_ctl_elem_value *ucontrol)
1106 {
1107 	struct echoaudio *chip;
1108 	int c, gain, changed;
1109 
1110 	changed = 0;
1111 	chip = snd_kcontrol_chip(kcontrol);
1112 	spin_lock_irq(&chip->lock);
1113 	for (c = 0; c < num_analog_busses_in(chip); c++) {
1114 		gain = ucontrol->value.integer.value[c];
1115 		/* Ignore out of range values */
1116 		if (gain < ECHOGAIN_MININP || gain > ECHOGAIN_MAXINP)
1117 			continue;
1118 		if (chip->input_gain[c] != gain) {
1119 			set_input_gain(chip, c, gain);
1120 			changed = 1;
1121 		}
1122 	}
1123 	if (changed)
1124 		update_input_line_level(chip);
1125 	spin_unlock_irq(&chip->lock);
1126 	return changed;
1127 }
1128 
1129 static const DECLARE_TLV_DB_SCALE(db_scale_input_gain, -2500, 50, 0);
1130 
1131 static const struct snd_kcontrol_new snd_echo_line_input_gain = {
1132 	.name = "Line Capture Volume",
1133 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1134 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1135 	.info = snd_echo_input_gain_info,
1136 	.get = snd_echo_input_gain_get,
1137 	.put = snd_echo_input_gain_put,
1138 	.tlv = {.p = db_scale_input_gain},
1139 };
1140 
1141 #endif /* ECHOCARD_HAS_INPUT_GAIN */
1142 
1143 
1144 
1145 #ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
1146 
1147 /************ Analog output nominal level (+4dBu / -10dBV) ***************/
snd_echo_output_nominal_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1148 static int snd_echo_output_nominal_info (struct snd_kcontrol *kcontrol,
1149 					 struct snd_ctl_elem_info *uinfo)
1150 {
1151 	struct echoaudio *chip;
1152 
1153 	chip = snd_kcontrol_chip(kcontrol);
1154 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1155 	uinfo->count = num_analog_busses_out(chip);
1156 	uinfo->value.integer.min = 0;
1157 	uinfo->value.integer.max = 1;
1158 	return 0;
1159 }
1160 
snd_echo_output_nominal_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1161 static int snd_echo_output_nominal_get(struct snd_kcontrol *kcontrol,
1162 				       struct snd_ctl_elem_value *ucontrol)
1163 {
1164 	struct echoaudio *chip;
1165 	int c;
1166 
1167 	chip = snd_kcontrol_chip(kcontrol);
1168 	for (c = 0; c < num_analog_busses_out(chip); c++)
1169 		ucontrol->value.integer.value[c] = chip->nominal_level[c];
1170 	return 0;
1171 }
1172 
snd_echo_output_nominal_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1173 static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol,
1174 				       struct snd_ctl_elem_value *ucontrol)
1175 {
1176 	struct echoaudio *chip;
1177 	int c, changed;
1178 
1179 	changed = 0;
1180 	chip = snd_kcontrol_chip(kcontrol);
1181 	spin_lock_irq(&chip->lock);
1182 	for (c = 0; c < num_analog_busses_out(chip); c++) {
1183 		if (chip->nominal_level[c] != ucontrol->value.integer.value[c]) {
1184 			set_nominal_level(chip, c,
1185 					  ucontrol->value.integer.value[c]);
1186 			changed = 1;
1187 		}
1188 	}
1189 	if (changed)
1190 		update_output_line_level(chip);
1191 	spin_unlock_irq(&chip->lock);
1192 	return changed;
1193 }
1194 
1195 static const struct snd_kcontrol_new snd_echo_output_nominal_level = {
1196 	.name = "Line Playback Switch (-10dBV)",
1197 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1198 	.info = snd_echo_output_nominal_info,
1199 	.get = snd_echo_output_nominal_get,
1200 	.put = snd_echo_output_nominal_put,
1201 };
1202 
1203 #endif /* ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL */
1204 
1205 
1206 
1207 #ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
1208 
1209 /*************** Analog input nominal level (+4dBu / -10dBV) ***************/
snd_echo_input_nominal_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1210 static int snd_echo_input_nominal_info(struct snd_kcontrol *kcontrol,
1211 				       struct snd_ctl_elem_info *uinfo)
1212 {
1213 	struct echoaudio *chip;
1214 
1215 	chip = snd_kcontrol_chip(kcontrol);
1216 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1217 	uinfo->count = num_analog_busses_in(chip);
1218 	uinfo->value.integer.min = 0;
1219 	uinfo->value.integer.max = 1;
1220 	return 0;
1221 }
1222 
snd_echo_input_nominal_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1223 static int snd_echo_input_nominal_get(struct snd_kcontrol *kcontrol,
1224 				      struct snd_ctl_elem_value *ucontrol)
1225 {
1226 	struct echoaudio *chip;
1227 	int c;
1228 
1229 	chip = snd_kcontrol_chip(kcontrol);
1230 	for (c = 0; c < num_analog_busses_in(chip); c++)
1231 		ucontrol->value.integer.value[c] =
1232 			chip->nominal_level[bx_analog_in(chip) + c];
1233 	return 0;
1234 }
1235 
snd_echo_input_nominal_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1236 static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol,
1237 				      struct snd_ctl_elem_value *ucontrol)
1238 {
1239 	struct echoaudio *chip;
1240 	int c, changed;
1241 
1242 	changed = 0;
1243 	chip = snd_kcontrol_chip(kcontrol);
1244 	spin_lock_irq(&chip->lock);
1245 	for (c = 0; c < num_analog_busses_in(chip); c++) {
1246 		if (chip->nominal_level[bx_analog_in(chip) + c] !=
1247 		    ucontrol->value.integer.value[c]) {
1248 			set_nominal_level(chip, bx_analog_in(chip) + c,
1249 					  ucontrol->value.integer.value[c]);
1250 			changed = 1;
1251 		}
1252 	}
1253 	if (changed)
1254 		update_output_line_level(chip);	/* "Output" is not a mistake
1255 						 * here.
1256 						 */
1257 	spin_unlock_irq(&chip->lock);
1258 	return changed;
1259 }
1260 
1261 static const struct snd_kcontrol_new snd_echo_intput_nominal_level = {
1262 	.name = "Line Capture Switch (-10dBV)",
1263 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1264 	.info = snd_echo_input_nominal_info,
1265 	.get = snd_echo_input_nominal_get,
1266 	.put = snd_echo_input_nominal_put,
1267 };
1268 
1269 #endif /* ECHOCARD_HAS_INPUT_NOMINAL_LEVEL */
1270 
1271 
1272 
1273 #ifdef ECHOCARD_HAS_MONITOR
1274 
1275 /******************* Monitor mixer *******************/
snd_echo_mixer_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1276 static int snd_echo_mixer_info(struct snd_kcontrol *kcontrol,
1277 			       struct snd_ctl_elem_info *uinfo)
1278 {
1279 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1280 	uinfo->count = 1;
1281 	uinfo->value.integer.min = ECHOGAIN_MINOUT;
1282 	uinfo->value.integer.max = ECHOGAIN_MAXOUT;
1283 	return 0;
1284 }
1285 
snd_echo_mixer_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1286 static int snd_echo_mixer_get(struct snd_kcontrol *kcontrol,
1287 			      struct snd_ctl_elem_value *ucontrol)
1288 {
1289 	struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1290 	unsigned int out = ucontrol->id.index / num_busses_in(chip);
1291 	unsigned int in = ucontrol->id.index % num_busses_in(chip);
1292 
1293 	if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
1294 		return -EINVAL;
1295 
1296 	ucontrol->value.integer.value[0] = chip->monitor_gain[out][in];
1297 	return 0;
1298 }
1299 
snd_echo_mixer_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1300 static int snd_echo_mixer_put(struct snd_kcontrol *kcontrol,
1301 			      struct snd_ctl_elem_value *ucontrol)
1302 {
1303 	struct echoaudio *chip;
1304 	int changed,  gain;
1305 	unsigned int out, in;
1306 
1307 	changed = 0;
1308 	chip = snd_kcontrol_chip(kcontrol);
1309 	out = ucontrol->id.index / num_busses_in(chip);
1310 	in = ucontrol->id.index % num_busses_in(chip);
1311 	if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS)
1312 		return -EINVAL;
1313 	gain = ucontrol->value.integer.value[0];
1314 	if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1315 		return -EINVAL;
1316 	if (chip->monitor_gain[out][in] != gain) {
1317 		spin_lock_irq(&chip->lock);
1318 		set_monitor_gain(chip, out, in, gain);
1319 		update_output_line_level(chip);
1320 		spin_unlock_irq(&chip->lock);
1321 		changed = 1;
1322 	}
1323 	return changed;
1324 }
1325 
1326 static struct snd_kcontrol_new snd_echo_monitor_mixer = {
1327 	.name = "Monitor Mixer Volume",
1328 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1329 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1330 	.info = snd_echo_mixer_info,
1331 	.get = snd_echo_mixer_get,
1332 	.put = snd_echo_mixer_put,
1333 	.tlv = {.p = db_scale_output_gain},
1334 };
1335 
1336 #endif /* ECHOCARD_HAS_MONITOR */
1337 
1338 
1339 
1340 #ifdef ECHOCARD_HAS_VMIXER
1341 
1342 /******************* Vmixer *******************/
snd_echo_vmixer_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1343 static int snd_echo_vmixer_info(struct snd_kcontrol *kcontrol,
1344 				struct snd_ctl_elem_info *uinfo)
1345 {
1346 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1347 	uinfo->count = 1;
1348 	uinfo->value.integer.min = ECHOGAIN_MINOUT;
1349 	uinfo->value.integer.max = ECHOGAIN_MAXOUT;
1350 	return 0;
1351 }
1352 
snd_echo_vmixer_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1353 static int snd_echo_vmixer_get(struct snd_kcontrol *kcontrol,
1354 			       struct snd_ctl_elem_value *ucontrol)
1355 {
1356 	struct echoaudio *chip;
1357 
1358 	chip = snd_kcontrol_chip(kcontrol);
1359 	ucontrol->value.integer.value[0] =
1360 		chip->vmixer_gain[ucontrol->id.index / num_pipes_out(chip)]
1361 			[ucontrol->id.index % num_pipes_out(chip)];
1362 	return 0;
1363 }
1364 
snd_echo_vmixer_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1365 static int snd_echo_vmixer_put(struct snd_kcontrol *kcontrol,
1366 			       struct snd_ctl_elem_value *ucontrol)
1367 {
1368 	struct echoaudio *chip;
1369 	int gain, changed;
1370 	short vch, out;
1371 
1372 	changed = 0;
1373 	chip = snd_kcontrol_chip(kcontrol);
1374 	out = ucontrol->id.index / num_pipes_out(chip);
1375 	vch = ucontrol->id.index % num_pipes_out(chip);
1376 	gain = ucontrol->value.integer.value[0];
1377 	if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
1378 		return -EINVAL;
1379 	if (chip->vmixer_gain[out][vch] != ucontrol->value.integer.value[0]) {
1380 		spin_lock_irq(&chip->lock);
1381 		set_vmixer_gain(chip, out, vch, ucontrol->value.integer.value[0]);
1382 		update_vmixer_level(chip);
1383 		spin_unlock_irq(&chip->lock);
1384 		changed = 1;
1385 	}
1386 	return changed;
1387 }
1388 
1389 static struct snd_kcontrol_new snd_echo_vmixer = {
1390 	.name = "VMixer Volume",
1391 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1392 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1393 	.info = snd_echo_vmixer_info,
1394 	.get = snd_echo_vmixer_get,
1395 	.put = snd_echo_vmixer_put,
1396 	.tlv = {.p = db_scale_output_gain},
1397 };
1398 
1399 #endif /* ECHOCARD_HAS_VMIXER */
1400 
1401 
1402 
1403 #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
1404 
1405 /******************* Digital mode switch *******************/
snd_echo_digital_mode_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1406 static int snd_echo_digital_mode_info(struct snd_kcontrol *kcontrol,
1407 				      struct snd_ctl_elem_info *uinfo)
1408 {
1409 	static const char * const names[4] = {
1410 		"S/PDIF Coaxial", "S/PDIF Optical", "ADAT Optical",
1411 		"S/PDIF Cdrom"
1412 	};
1413 	struct echoaudio *chip;
1414 
1415 	chip = snd_kcontrol_chip(kcontrol);
1416 	return snd_ctl_enum_info(uinfo, 1, chip->num_digital_modes, names);
1417 }
1418 
snd_echo_digital_mode_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1419 static int snd_echo_digital_mode_get(struct snd_kcontrol *kcontrol,
1420 				     struct snd_ctl_elem_value *ucontrol)
1421 {
1422 	struct echoaudio *chip;
1423 	int i, mode;
1424 
1425 	chip = snd_kcontrol_chip(kcontrol);
1426 	mode = chip->digital_mode;
1427 	for (i = chip->num_digital_modes - 1; i >= 0; i--)
1428 		if (mode == chip->digital_mode_list[i]) {
1429 			ucontrol->value.enumerated.item[0] = i;
1430 			break;
1431 		}
1432 	return 0;
1433 }
1434 
snd_echo_digital_mode_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1435 static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
1436 				     struct snd_ctl_elem_value *ucontrol)
1437 {
1438 	struct echoaudio *chip;
1439 	int changed;
1440 	unsigned short emode, dmode;
1441 
1442 	changed = 0;
1443 	chip = snd_kcontrol_chip(kcontrol);
1444 
1445 	emode = ucontrol->value.enumerated.item[0];
1446 	if (emode >= chip->num_digital_modes)
1447 		return -EINVAL;
1448 	dmode = chip->digital_mode_list[emode];
1449 
1450 	if (dmode != chip->digital_mode) {
1451 		/* mode_mutex is required to make this operation atomic wrt
1452 		pcm_digital_*_open() and set_input_clock() functions. */
1453 		mutex_lock(&chip->mode_mutex);
1454 
1455 		/* Do not allow the user to change the digital mode when a pcm
1456 		device is open because it also changes the number of channels
1457 		and the allowed sample rates */
1458 		if (chip->opencount) {
1459 			changed = -EAGAIN;
1460 		} else {
1461 			changed = set_digital_mode(chip, dmode);
1462 			/* If we had to change the clock source, report it */
1463 			if (changed > 0 && chip->clock_src_ctl) {
1464 				snd_ctl_notify(chip->card,
1465 					       SNDRV_CTL_EVENT_MASK_VALUE,
1466 					       &chip->clock_src_ctl->id);
1467 				dev_dbg(chip->card->dev,
1468 					"SDM() =%d\n", changed);
1469 			}
1470 			if (changed >= 0)
1471 				changed = 1;	/* No errors */
1472 		}
1473 		mutex_unlock(&chip->mode_mutex);
1474 	}
1475 	return changed;
1476 }
1477 
1478 static const struct snd_kcontrol_new snd_echo_digital_mode_switch = {
1479 	.name = "Digital mode Switch",
1480 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
1481 	.info = snd_echo_digital_mode_info,
1482 	.get = snd_echo_digital_mode_get,
1483 	.put = snd_echo_digital_mode_put,
1484 };
1485 
1486 #endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
1487 
1488 
1489 
1490 #ifdef ECHOCARD_HAS_DIGITAL_IO
1491 
1492 /******************* S/PDIF mode switch *******************/
snd_echo_spdif_mode_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1493 static int snd_echo_spdif_mode_info(struct snd_kcontrol *kcontrol,
1494 				    struct snd_ctl_elem_info *uinfo)
1495 {
1496 	static const char * const names[2] = {"Consumer", "Professional"};
1497 
1498 	return snd_ctl_enum_info(uinfo, 1, 2, names);
1499 }
1500 
snd_echo_spdif_mode_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1501 static int snd_echo_spdif_mode_get(struct snd_kcontrol *kcontrol,
1502 				   struct snd_ctl_elem_value *ucontrol)
1503 {
1504 	struct echoaudio *chip;
1505 
1506 	chip = snd_kcontrol_chip(kcontrol);
1507 	ucontrol->value.enumerated.item[0] = !!chip->professional_spdif;
1508 	return 0;
1509 }
1510 
snd_echo_spdif_mode_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1511 static int snd_echo_spdif_mode_put(struct snd_kcontrol *kcontrol,
1512 				   struct snd_ctl_elem_value *ucontrol)
1513 {
1514 	struct echoaudio *chip;
1515 	int mode;
1516 
1517 	chip = snd_kcontrol_chip(kcontrol);
1518 	mode = !!ucontrol->value.enumerated.item[0];
1519 	if (mode != chip->professional_spdif) {
1520 		spin_lock_irq(&chip->lock);
1521 		set_professional_spdif(chip, mode);
1522 		spin_unlock_irq(&chip->lock);
1523 		return 1;
1524 	}
1525 	return 0;
1526 }
1527 
1528 static const struct snd_kcontrol_new snd_echo_spdif_mode_switch = {
1529 	.name = "S/PDIF mode Switch",
1530 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
1531 	.info = snd_echo_spdif_mode_info,
1532 	.get = snd_echo_spdif_mode_get,
1533 	.put = snd_echo_spdif_mode_put,
1534 };
1535 
1536 #endif /* ECHOCARD_HAS_DIGITAL_IO */
1537 
1538 
1539 
1540 #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
1541 
1542 /******************* Select input clock source *******************/
snd_echo_clock_source_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1543 static int snd_echo_clock_source_info(struct snd_kcontrol *kcontrol,
1544 				      struct snd_ctl_elem_info *uinfo)
1545 {
1546 	static const char * const names[8] = {
1547 		"Internal", "Word", "Super", "S/PDIF", "ADAT", "ESync",
1548 		"ESync96", "MTC"
1549 	};
1550 	struct echoaudio *chip;
1551 
1552 	chip = snd_kcontrol_chip(kcontrol);
1553 	return snd_ctl_enum_info(uinfo, 1, chip->num_clock_sources, names);
1554 }
1555 
snd_echo_clock_source_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1556 static int snd_echo_clock_source_get(struct snd_kcontrol *kcontrol,
1557 				     struct snd_ctl_elem_value *ucontrol)
1558 {
1559 	struct echoaudio *chip;
1560 	int i, clock;
1561 
1562 	chip = snd_kcontrol_chip(kcontrol);
1563 	clock = chip->input_clock;
1564 
1565 	for (i = 0; i < chip->num_clock_sources; i++)
1566 		if (clock == chip->clock_source_list[i])
1567 			ucontrol->value.enumerated.item[0] = i;
1568 
1569 	return 0;
1570 }
1571 
snd_echo_clock_source_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1572 static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol,
1573 				     struct snd_ctl_elem_value *ucontrol)
1574 {
1575 	struct echoaudio *chip;
1576 	int changed;
1577 	unsigned int eclock, dclock;
1578 
1579 	changed = 0;
1580 	chip = snd_kcontrol_chip(kcontrol);
1581 	eclock = ucontrol->value.enumerated.item[0];
1582 	if (eclock >= chip->input_clock_types)
1583 		return -EINVAL;
1584 	dclock = chip->clock_source_list[eclock];
1585 	if (chip->input_clock != dclock) {
1586 		mutex_lock(&chip->mode_mutex);
1587 		spin_lock_irq(&chip->lock);
1588 		changed = set_input_clock(chip, dclock);
1589 		if (!changed)
1590 			changed = 1;	/* no errors */
1591 		spin_unlock_irq(&chip->lock);
1592 		mutex_unlock(&chip->mode_mutex);
1593 	}
1594 
1595 	if (changed < 0)
1596 		dev_dbg(chip->card->dev,
1597 			"seticlk val%d err 0x%x\n", dclock, changed);
1598 
1599 	return changed;
1600 }
1601 
1602 static const struct snd_kcontrol_new snd_echo_clock_source_switch = {
1603 	.name = "Sample Clock Source",
1604 	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
1605 	.info = snd_echo_clock_source_info,
1606 	.get = snd_echo_clock_source_get,
1607 	.put = snd_echo_clock_source_put,
1608 };
1609 
1610 #endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
1611 
1612 
1613 
1614 #ifdef ECHOCARD_HAS_PHANTOM_POWER
1615 
1616 /******************* Phantom power switch *******************/
1617 #define snd_echo_phantom_power_info	snd_ctl_boolean_mono_info
1618 
snd_echo_phantom_power_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1619 static int snd_echo_phantom_power_get(struct snd_kcontrol *kcontrol,
1620 				      struct snd_ctl_elem_value *ucontrol)
1621 {
1622 	struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1623 
1624 	ucontrol->value.integer.value[0] = chip->phantom_power;
1625 	return 0;
1626 }
1627 
snd_echo_phantom_power_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1628 static int snd_echo_phantom_power_put(struct snd_kcontrol *kcontrol,
1629 				      struct snd_ctl_elem_value *ucontrol)
1630 {
1631 	struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1632 	int power, changed = 0;
1633 
1634 	power = !!ucontrol->value.integer.value[0];
1635 	if (chip->phantom_power != power) {
1636 		spin_lock_irq(&chip->lock);
1637 		changed = set_phantom_power(chip, power);
1638 		spin_unlock_irq(&chip->lock);
1639 		if (changed == 0)
1640 			changed = 1;	/* no errors */
1641 	}
1642 	return changed;
1643 }
1644 
1645 static const struct snd_kcontrol_new snd_echo_phantom_power_switch = {
1646 	.name = "Phantom power Switch",
1647 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
1648 	.info = snd_echo_phantom_power_info,
1649 	.get = snd_echo_phantom_power_get,
1650 	.put = snd_echo_phantom_power_put,
1651 };
1652 
1653 #endif /* ECHOCARD_HAS_PHANTOM_POWER */
1654 
1655 
1656 
1657 #ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
1658 
1659 /******************* Digital input automute switch *******************/
1660 #define snd_echo_automute_info		snd_ctl_boolean_mono_info
1661 
snd_echo_automute_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1662 static int snd_echo_automute_get(struct snd_kcontrol *kcontrol,
1663 				 struct snd_ctl_elem_value *ucontrol)
1664 {
1665 	struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1666 
1667 	ucontrol->value.integer.value[0] = chip->digital_in_automute;
1668 	return 0;
1669 }
1670 
snd_echo_automute_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1671 static int snd_echo_automute_put(struct snd_kcontrol *kcontrol,
1672 				 struct snd_ctl_elem_value *ucontrol)
1673 {
1674 	struct echoaudio *chip = snd_kcontrol_chip(kcontrol);
1675 	int automute, changed = 0;
1676 
1677 	automute = !!ucontrol->value.integer.value[0];
1678 	if (chip->digital_in_automute != automute) {
1679 		spin_lock_irq(&chip->lock);
1680 		changed = set_input_auto_mute(chip, automute);
1681 		spin_unlock_irq(&chip->lock);
1682 		if (changed == 0)
1683 			changed = 1;	/* no errors */
1684 	}
1685 	return changed;
1686 }
1687 
1688 static const struct snd_kcontrol_new snd_echo_automute_switch = {
1689 	.name = "Digital Capture Switch (automute)",
1690 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
1691 	.info = snd_echo_automute_info,
1692 	.get = snd_echo_automute_get,
1693 	.put = snd_echo_automute_put,
1694 };
1695 
1696 #endif /* ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE */
1697 
1698 
1699 
1700 /******************* VU-meters switch *******************/
1701 #define snd_echo_vumeters_switch_info		snd_ctl_boolean_mono_info
1702 
snd_echo_vumeters_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1703 static int snd_echo_vumeters_switch_put(struct snd_kcontrol *kcontrol,
1704 					struct snd_ctl_elem_value *ucontrol)
1705 {
1706 	struct echoaudio *chip;
1707 
1708 	chip = snd_kcontrol_chip(kcontrol);
1709 	spin_lock_irq(&chip->lock);
1710 	set_meters_on(chip, ucontrol->value.integer.value[0]);
1711 	spin_unlock_irq(&chip->lock);
1712 	return 1;
1713 }
1714 
1715 static const struct snd_kcontrol_new snd_echo_vumeters_switch = {
1716 	.name = "VU-meters Switch",
1717 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
1718 	.access = SNDRV_CTL_ELEM_ACCESS_WRITE,
1719 	.info = snd_echo_vumeters_switch_info,
1720 	.put = snd_echo_vumeters_switch_put,
1721 };
1722 
1723 
1724 
1725 /***** Read VU-meters (input, output, analog and digital together) *****/
snd_echo_vumeters_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1726 static int snd_echo_vumeters_info(struct snd_kcontrol *kcontrol,
1727 				  struct snd_ctl_elem_info *uinfo)
1728 {
1729 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1730 	uinfo->count = 96;
1731 	uinfo->value.integer.min = ECHOGAIN_MINOUT;
1732 	uinfo->value.integer.max = 0;
1733 	return 0;
1734 }
1735 
snd_echo_vumeters_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1736 static int snd_echo_vumeters_get(struct snd_kcontrol *kcontrol,
1737 				 struct snd_ctl_elem_value *ucontrol)
1738 {
1739 	struct echoaudio *chip;
1740 
1741 	chip = snd_kcontrol_chip(kcontrol);
1742 	get_audio_meters(chip, ucontrol->value.integer.value);
1743 	return 0;
1744 }
1745 
1746 static const struct snd_kcontrol_new snd_echo_vumeters = {
1747 	.name = "VU-meters",
1748 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1749 	.access = SNDRV_CTL_ELEM_ACCESS_READ |
1750 		  SNDRV_CTL_ELEM_ACCESS_VOLATILE |
1751 		  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
1752 	.info = snd_echo_vumeters_info,
1753 	.get = snd_echo_vumeters_get,
1754 	.tlv = {.p = db_scale_output_gain},
1755 };
1756 
1757 
1758 
1759 /*** Channels info - it exports informations about the number of channels ***/
snd_echo_channels_info_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1760 static int snd_echo_channels_info_info(struct snd_kcontrol *kcontrol,
1761 				       struct snd_ctl_elem_info *uinfo)
1762 {
1763 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1764 	uinfo->count = 6;
1765 	uinfo->value.integer.min = 0;
1766 	uinfo->value.integer.max = 1 << ECHO_CLOCK_NUMBER;
1767 	return 0;
1768 }
1769 
snd_echo_channels_info_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1770 static int snd_echo_channels_info_get(struct snd_kcontrol *kcontrol,
1771 				      struct snd_ctl_elem_value *ucontrol)
1772 {
1773 	struct echoaudio *chip;
1774 	int detected, clocks, bit, src;
1775 
1776 	chip = snd_kcontrol_chip(kcontrol);
1777 	ucontrol->value.integer.value[0] = num_busses_in(chip);
1778 	ucontrol->value.integer.value[1] = num_analog_busses_in(chip);
1779 	ucontrol->value.integer.value[2] = num_busses_out(chip);
1780 	ucontrol->value.integer.value[3] = num_analog_busses_out(chip);
1781 	ucontrol->value.integer.value[4] = num_pipes_out(chip);
1782 
1783 	/* Compute the bitmask of the currently valid input clocks */
1784 	detected = detect_input_clocks(chip);
1785 	clocks = 0;
1786 	src = chip->num_clock_sources - 1;
1787 	for (bit = ECHO_CLOCK_NUMBER - 1; bit >= 0; bit--)
1788 		if (detected & (1 << bit))
1789 			for (; src >= 0; src--)
1790 				if (bit == chip->clock_source_list[src]) {
1791 					clocks |= 1 << src;
1792 					break;
1793 				}
1794 	ucontrol->value.integer.value[5] = clocks;
1795 
1796 	return 0;
1797 }
1798 
1799 static const struct snd_kcontrol_new snd_echo_channels_info = {
1800 	.name = "Channels info",
1801 	.iface = SNDRV_CTL_ELEM_IFACE_HWDEP,
1802 	.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
1803 	.info = snd_echo_channels_info_info,
1804 	.get = snd_echo_channels_info_get,
1805 };
1806 
1807 
1808 
1809 
1810 /******************************************************************************
1811 	IRQ Handling
1812 ******************************************************************************/
1813 /* Check if a period has elapsed since last interrupt
1814  *
1815  * Don't make any updates to state; PCM core handles this with the
1816  * correct locks.
1817  *
1818  * \return true if a period has elapsed, otherwise false
1819  */
period_has_elapsed(struct snd_pcm_substream * substream)1820 static bool period_has_elapsed(struct snd_pcm_substream *substream)
1821 {
1822 	struct snd_pcm_runtime *runtime = substream->runtime;
1823 	struct audiopipe *pipe = runtime->private_data;
1824 	u32 counter, step;
1825 	size_t period_bytes;
1826 
1827 	if (pipe->state != PIPE_STATE_STARTED)
1828 		return false;
1829 
1830 	period_bytes = frames_to_bytes(runtime, runtime->period_size);
1831 
1832 	counter = le32_to_cpu(*pipe->dma_counter);  /* presumed atomic */
1833 
1834 	step = counter - pipe->last_period;  /* handles wrapping */
1835 	step -= step % period_bytes;  /* acknowledge whole periods only */
1836 
1837 	if (step == 0)
1838 		return false;  /* haven't advanced a whole period yet */
1839 
1840 	pipe->last_period += step;  /* used exclusively by us */
1841 	return true;
1842 }
1843 
snd_echo_interrupt(int irq,void * dev_id)1844 static irqreturn_t snd_echo_interrupt(int irq, void *dev_id)
1845 {
1846 	struct echoaudio *chip = dev_id;
1847 	int ss, st;
1848 
1849 	spin_lock(&chip->lock);
1850 	st = service_irq(chip);
1851 	if (st < 0) {
1852 		spin_unlock(&chip->lock);
1853 		return IRQ_NONE;
1854 	}
1855 	/* The hardware doesn't tell us which substream caused the irq,
1856 	thus we have to check all running substreams. */
1857 	for (ss = 0; ss < DSP_MAXPIPES; ss++) {
1858 		struct snd_pcm_substream *substream;
1859 
1860 		substream = chip->substream[ss];
1861 		if (substream && period_has_elapsed(substream)) {
1862 			spin_unlock(&chip->lock);
1863 			snd_pcm_period_elapsed(substream);
1864 			spin_lock(&chip->lock);
1865 		}
1866 	}
1867 	spin_unlock(&chip->lock);
1868 
1869 #ifdef ECHOCARD_HAS_MIDI
1870 	if (st > 0 && chip->midi_in) {
1871 		snd_rawmidi_receive(chip->midi_in, chip->midi_buffer, st);
1872 		dev_dbg(chip->card->dev, "rawmidi_iread=%d\n", st);
1873 	}
1874 #endif
1875 	return IRQ_HANDLED;
1876 }
1877 
1878 
1879 
1880 
1881 /******************************************************************************
1882 	Module construction / destruction
1883 ******************************************************************************/
1884 
snd_echo_free(struct snd_card * card)1885 static void snd_echo_free(struct snd_card *card)
1886 {
1887 	struct echoaudio *chip = card->private_data;
1888 
1889 	if (chip->comm_page)
1890 		rest_in_peace(chip);
1891 
1892 	if (chip->irq >= 0)
1893 		free_irq(chip->irq, chip);
1894 
1895 	/* release chip data */
1896 	free_firmware_cache(chip);
1897 }
1898 
1899 /* <--snd_echo_probe() */
snd_echo_create(struct snd_card * card,struct pci_dev * pci)1900 static int snd_echo_create(struct snd_card *card,
1901 			   struct pci_dev *pci)
1902 {
1903 	struct echoaudio *chip = card->private_data;
1904 	int err;
1905 	size_t sz;
1906 
1907 	pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0xC0);
1908 
1909 	err = pcim_enable_device(pci);
1910 	if (err < 0)
1911 		return err;
1912 	pci_set_master(pci);
1913 
1914 	/* Allocate chip if needed */
1915 	spin_lock_init(&chip->lock);
1916 	chip->card = card;
1917 	chip->pci = pci;
1918 	chip->irq = -1;
1919 	chip->opencount = 0;
1920 	mutex_init(&chip->mode_mutex);
1921 	chip->can_set_rate = 1;
1922 
1923 	/* PCI resource allocation */
1924 	err = pci_request_regions(pci, ECHOCARD_NAME);
1925 	if (err < 0)
1926 		return err;
1927 
1928 	chip->dsp_registers_phys = pci_resource_start(pci, 0);
1929 	sz = pci_resource_len(pci, 0);
1930 	if (sz > PAGE_SIZE)
1931 		sz = PAGE_SIZE;		/* We map only the required part */
1932 
1933 	chip->dsp_registers = devm_ioremap(&pci->dev, chip->dsp_registers_phys, sz);
1934 	if (!chip->dsp_registers) {
1935 		dev_err(chip->card->dev, "ioremap failed\n");
1936 		return -ENOMEM;
1937 	}
1938 
1939 	if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
1940 			KBUILD_MODNAME, chip)) {
1941 		dev_err(chip->card->dev, "cannot grab irq\n");
1942 		return -EBUSY;
1943 	}
1944 	chip->irq = pci->irq;
1945 	card->sync_irq = chip->irq;
1946 	dev_dbg(card->dev, "pci=%p irq=%d subdev=%04x Init hardware...\n",
1947 		chip->pci, chip->irq, chip->pci->subsystem_device);
1948 
1949 	card->private_free = snd_echo_free;
1950 
1951 	/* Create the DSP comm page - this is the area of memory used for most
1952 	of the communication with the DSP, which accesses it via bus mastering */
1953 	chip->commpage_dma_buf =
1954 		snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV,
1955 				     sizeof(struct comm_page));
1956 	if (!chip->commpage_dma_buf)
1957 		return -ENOMEM;
1958 	chip->comm_page_phys = chip->commpage_dma_buf->addr;
1959 	chip->comm_page = (struct comm_page *)chip->commpage_dma_buf->area;
1960 
1961 	err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
1962 	if (err >= 0)
1963 		err = set_mixer_defaults(chip);
1964 	if (err < 0) {
1965 		dev_err(card->dev, "init_hw err=%d\n", err);
1966 		return err;
1967 	}
1968 
1969 	return 0;
1970 }
1971 
1972 /* constructor */
__snd_echo_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)1973 static int __snd_echo_probe(struct pci_dev *pci,
1974 			    const struct pci_device_id *pci_id)
1975 {
1976 	static int dev;
1977 	struct snd_card *card;
1978 	struct echoaudio *chip;
1979 	char *dsp;
1980 	__maybe_unused int i;
1981 	int err;
1982 
1983 	if (dev >= SNDRV_CARDS)
1984 		return -ENODEV;
1985 	if (!enable[dev]) {
1986 		dev++;
1987 		return -ENOENT;
1988 	}
1989 
1990 	i = 0;
1991 	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1992 				sizeof(*chip), &card);
1993 	if (err < 0)
1994 		return err;
1995 	chip = card->private_data;
1996 
1997 	err = snd_echo_create(card, pci);
1998 	if (err < 0)
1999 		return err;
2000 
2001 	strcpy(card->driver, "Echo_" ECHOCARD_NAME);
2002 	strcpy(card->shortname, chip->card_name);
2003 
2004 	dsp = "56301";
2005 	if (pci_id->device == 0x3410)
2006 		dsp = "56361";
2007 
2008 	sprintf(card->longname, "%s rev.%d (DSP%s) at 0x%lx irq %i",
2009 		card->shortname, pci_id->subdevice & 0x000f, dsp,
2010 		chip->dsp_registers_phys, chip->irq);
2011 
2012 	err = snd_echo_new_pcm(chip);
2013 	if (err < 0) {
2014 		dev_err(chip->card->dev, "new pcm error %d\n", err);
2015 		return err;
2016 	}
2017 
2018 #ifdef ECHOCARD_HAS_MIDI
2019 	if (chip->has_midi) {	/* Some Mia's do not have midi */
2020 		err = snd_echo_midi_create(card, chip);
2021 		if (err < 0) {
2022 			dev_err(chip->card->dev, "new midi error %d\n", err);
2023 			return err;
2024 		}
2025 	}
2026 #endif
2027 
2028 #ifdef ECHOCARD_HAS_VMIXER
2029 	snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip);
2030 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip));
2031 	if (err < 0)
2032 		return err;
2033 #ifdef ECHOCARD_HAS_LINE_OUT_GAIN
2034 	err = snd_ctl_add(chip->card,
2035 			  snd_ctl_new1(&snd_echo_line_output_gain, chip));
2036 	if (err < 0)
2037 		return err;
2038 #endif
2039 #else /* ECHOCARD_HAS_VMIXER */
2040 	err = snd_ctl_add(chip->card,
2041 			  snd_ctl_new1(&snd_echo_pcm_output_gain, chip));
2042 	if (err < 0)
2043 		return err;
2044 #endif /* ECHOCARD_HAS_VMIXER */
2045 
2046 #ifdef ECHOCARD_HAS_INPUT_GAIN
2047 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip));
2048 	if (err < 0)
2049 		return err;
2050 #endif
2051 
2052 #ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
2053 	if (!chip->hasnt_input_nominal_level) {
2054 		err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip));
2055 		if (err < 0)
2056 			return err;
2057 	}
2058 #endif
2059 
2060 #ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
2061 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip));
2062 	if (err < 0)
2063 		return err;
2064 #endif
2065 
2066 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip));
2067 	if (err < 0)
2068 		return err;
2069 
2070 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip));
2071 	if (err < 0)
2072 		return err;
2073 
2074 #ifdef ECHOCARD_HAS_MONITOR
2075 	snd_echo_monitor_mixer.count = num_busses_in(chip) * num_busses_out(chip);
2076 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip));
2077 	if (err < 0)
2078 		return err;
2079 #endif
2080 
2081 #ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE
2082 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip));
2083 	if (err < 0)
2084 		return err;
2085 #endif
2086 
2087 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip));
2088 	if (err < 0)
2089 		return err;
2090 
2091 #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
2092 	/* Creates a list of available digital modes */
2093 	chip->num_digital_modes = 0;
2094 	for (i = 0; i < 6; i++)
2095 		if (chip->digital_modes & (1 << i))
2096 			chip->digital_mode_list[chip->num_digital_modes++] = i;
2097 
2098 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip));
2099 	if (err < 0)
2100 		return err;
2101 #endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */
2102 
2103 #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
2104 	/* Creates a list of available clock sources */
2105 	chip->num_clock_sources = 0;
2106 	for (i = 0; i < 10; i++)
2107 		if (chip->input_clock_types & (1 << i))
2108 			chip->clock_source_list[chip->num_clock_sources++] = i;
2109 
2110 	if (chip->num_clock_sources > 1) {
2111 		chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip);
2112 		err = snd_ctl_add(chip->card, chip->clock_src_ctl);
2113 		if (err < 0)
2114 			return err;
2115 	}
2116 #endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */
2117 
2118 #ifdef ECHOCARD_HAS_DIGITAL_IO
2119 	err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip));
2120 	if (err < 0)
2121 		return err;
2122 #endif
2123 
2124 #ifdef ECHOCARD_HAS_PHANTOM_POWER
2125 	if (chip->has_phantom_power) {
2126 		err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip));
2127 		if (err < 0)
2128 			return err;
2129 	}
2130 #endif
2131 
2132 	err = snd_card_register(card);
2133 	if (err < 0)
2134 		return err;
2135 	dev_info(card->dev, "Card registered: %s\n", card->longname);
2136 
2137 	pci_set_drvdata(pci, chip);
2138 	dev++;
2139 	return 0;
2140 }
2141 
snd_echo_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)2142 static int snd_echo_probe(struct pci_dev *pci,
2143 			  const struct pci_device_id *pci_id)
2144 {
2145 	return snd_card_free_on_error(&pci->dev, __snd_echo_probe(pci, pci_id));
2146 }
2147 
2148 
2149 #if defined(CONFIG_PM_SLEEP)
2150 
snd_echo_suspend(struct device * dev)2151 static int snd_echo_suspend(struct device *dev)
2152 {
2153 	struct echoaudio *chip = dev_get_drvdata(dev);
2154 
2155 #ifdef ECHOCARD_HAS_MIDI
2156 	/* This call can sleep */
2157 	if (chip->midi_out)
2158 		snd_echo_midi_output_trigger(chip->midi_out, 0);
2159 #endif
2160 	spin_lock_irq(&chip->lock);
2161 	if (wait_handshake(chip)) {
2162 		spin_unlock_irq(&chip->lock);
2163 		return -EIO;
2164 	}
2165 	clear_handshake(chip);
2166 	if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0) {
2167 		spin_unlock_irq(&chip->lock);
2168 		return -EIO;
2169 	}
2170 	spin_unlock_irq(&chip->lock);
2171 
2172 	chip->dsp_code = NULL;
2173 	free_irq(chip->irq, chip);
2174 	chip->irq = -1;
2175 	chip->card->sync_irq = -1;
2176 	return 0;
2177 }
2178 
2179 
2180 
snd_echo_resume(struct device * dev)2181 static int snd_echo_resume(struct device *dev)
2182 {
2183 	struct pci_dev *pci = to_pci_dev(dev);
2184 	struct echoaudio *chip = dev_get_drvdata(dev);
2185 	struct comm_page *commpage, *commpage_bak;
2186 	u32 pipe_alloc_mask;
2187 	int err;
2188 
2189 	commpage = chip->comm_page;
2190 	commpage_bak = kmemdup(commpage, sizeof(*commpage), GFP_KERNEL);
2191 	if (commpage_bak == NULL)
2192 		return -ENOMEM;
2193 
2194 	err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
2195 	if (err < 0) {
2196 		kfree(commpage_bak);
2197 		dev_err(dev, "resume init_hw err=%d\n", err);
2198 		return err;
2199 	}
2200 
2201 	/* Temporarily set chip->pipe_alloc_mask=0 otherwise
2202 	 * restore_dsp_settings() fails.
2203 	 */
2204 	pipe_alloc_mask = chip->pipe_alloc_mask;
2205 	chip->pipe_alloc_mask = 0;
2206 	err = restore_dsp_rettings(chip);
2207 	chip->pipe_alloc_mask = pipe_alloc_mask;
2208 	if (err < 0) {
2209 		kfree(commpage_bak);
2210 		return err;
2211 	}
2212 
2213 	memcpy(&commpage->audio_format, &commpage_bak->audio_format,
2214 		sizeof(commpage->audio_format));
2215 	memcpy(&commpage->sglist_addr, &commpage_bak->sglist_addr,
2216 		sizeof(commpage->sglist_addr));
2217 	memcpy(&commpage->midi_output, &commpage_bak->midi_output,
2218 		sizeof(commpage->midi_output));
2219 	kfree(commpage_bak);
2220 
2221 	if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
2222 			KBUILD_MODNAME, chip)) {
2223 		dev_err(chip->card->dev, "cannot grab irq\n");
2224 		return -EBUSY;
2225 	}
2226 	chip->irq = pci->irq;
2227 	chip->card->sync_irq = chip->irq;
2228 	dev_dbg(dev, "resume irq=%d\n", chip->irq);
2229 
2230 #ifdef ECHOCARD_HAS_MIDI
2231 	if (chip->midi_input_enabled)
2232 		enable_midi_input(chip, true);
2233 	if (chip->midi_out)
2234 		snd_echo_midi_output_trigger(chip->midi_out, 1);
2235 #endif
2236 
2237 	return 0;
2238 }
2239 
2240 static SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume);
2241 #define SND_ECHO_PM_OPS	&snd_echo_pm
2242 #else
2243 #define SND_ECHO_PM_OPS	NULL
2244 #endif /* CONFIG_PM_SLEEP */
2245 
2246 /******************************************************************************
2247 	Everything starts and ends here
2248 ******************************************************************************/
2249 
2250 /* pci_driver definition */
2251 static struct pci_driver echo_driver = {
2252 	.name = KBUILD_MODNAME,
2253 	.id_table = snd_echo_ids,
2254 	.probe = snd_echo_probe,
2255 	.driver = {
2256 		.pm = SND_ECHO_PM_OPS,
2257 	},
2258 };
2259 
2260 module_pci_driver(echo_driver);
2261