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[mirror_ubuntu-bionic-kernel.git] / sound / soc / omap / ams-delta.c
1 /*
2 * ams-delta.c -- SoC audio for Amstrad E3 (Delta) videophone
3 *
4 * Copyright (C) 2009 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
5 *
6 * Initially based on sound/soc/omap/osk5912.x
7 * Copyright (C) 2008 Mistral Solutions
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 * 02110-1301 USA
22 *
23 */
24
25 #include <linux/gpio.h>
26 #include <linux/spinlock.h>
27 #include <linux/tty.h>
28
29 #include <sound/soc.h>
30 #include <sound/jack.h>
31
32 #include <asm/mach-types.h>
33
34 #include <plat/board-ams-delta.h>
35 #include <plat/mcbsp.h>
36
37 #include "omap-mcbsp.h"
38 #include "omap-pcm.h"
39 #include "../codecs/cx20442.h"
40
41
42 /* Board specific DAPM widgets */
43 static const struct snd_soc_dapm_widget ams_delta_dapm_widgets[] = {
44 /* Handset */
45 SND_SOC_DAPM_MIC("Mouthpiece", NULL),
46 SND_SOC_DAPM_HP("Earpiece", NULL),
47 /* Handsfree/Speakerphone */
48 SND_SOC_DAPM_MIC("Microphone", NULL),
49 SND_SOC_DAPM_SPK("Speaker", NULL),
50 };
51
52 /* How they are connected to codec pins */
53 static const struct snd_soc_dapm_route ams_delta_audio_map[] = {
54 {"TELIN", NULL, "Mouthpiece"},
55 {"Earpiece", NULL, "TELOUT"},
56
57 {"MIC", NULL, "Microphone"},
58 {"Speaker", NULL, "SPKOUT"},
59 };
60
61 /*
62 * Controls, functional after the modem line discipline is activated.
63 */
64
65 /* Virtual switch: audio input/output constellations */
66 static const char *ams_delta_audio_mode[] =
67 {"Mixed", "Handset", "Handsfree", "Speakerphone"};
68
69 /* Selection <-> pin translation */
70 #define AMS_DELTA_MOUTHPIECE 0
71 #define AMS_DELTA_EARPIECE 1
72 #define AMS_DELTA_MICROPHONE 2
73 #define AMS_DELTA_SPEAKER 3
74 #define AMS_DELTA_AGC 4
75
76 #define AMS_DELTA_MIXED ((1 << AMS_DELTA_EARPIECE) | \
77 (1 << AMS_DELTA_MICROPHONE))
78 #define AMS_DELTA_HANDSET ((1 << AMS_DELTA_MOUTHPIECE) | \
79 (1 << AMS_DELTA_EARPIECE))
80 #define AMS_DELTA_HANDSFREE ((1 << AMS_DELTA_MICROPHONE) | \
81 (1 << AMS_DELTA_SPEAKER))
82 #define AMS_DELTA_SPEAKERPHONE (AMS_DELTA_HANDSFREE | (1 << AMS_DELTA_AGC))
83
84 static const unsigned short ams_delta_audio_mode_pins[] = {
85 AMS_DELTA_MIXED,
86 AMS_DELTA_HANDSET,
87 AMS_DELTA_HANDSFREE,
88 AMS_DELTA_SPEAKERPHONE,
89 };
90
91 static unsigned short ams_delta_audio_agc;
92
93 static int ams_delta_set_audio_mode(struct snd_kcontrol *kcontrol,
94 struct snd_ctl_elem_value *ucontrol)
95 {
96 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
97 struct snd_soc_dapm_context *dapm = &codec->dapm;
98 struct soc_enum *control = (struct soc_enum *)kcontrol->private_value;
99 unsigned short pins;
100 int pin, changed = 0;
101
102 /* Refuse any mode changes if we are not able to control the codec. */
103 if (!codec->hw_write)
104 return -EUNATCH;
105
106 if (ucontrol->value.enumerated.item[0] >= control->max)
107 return -EINVAL;
108
109 mutex_lock(&codec->mutex);
110
111 /* Translate selection to bitmap */
112 pins = ams_delta_audio_mode_pins[ucontrol->value.enumerated.item[0]];
113
114 /* Setup pins after corresponding bits if changed */
115 pin = !!(pins & (1 << AMS_DELTA_MOUTHPIECE));
116 if (pin != snd_soc_dapm_get_pin_status(dapm, "Mouthpiece")) {
117 changed = 1;
118 if (pin)
119 snd_soc_dapm_enable_pin(dapm, "Mouthpiece");
120 else
121 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
122 }
123 pin = !!(pins & (1 << AMS_DELTA_EARPIECE));
124 if (pin != snd_soc_dapm_get_pin_status(dapm, "Earpiece")) {
125 changed = 1;
126 if (pin)
127 snd_soc_dapm_enable_pin(dapm, "Earpiece");
128 else
129 snd_soc_dapm_disable_pin(dapm, "Earpiece");
130 }
131 pin = !!(pins & (1 << AMS_DELTA_MICROPHONE));
132 if (pin != snd_soc_dapm_get_pin_status(dapm, "Microphone")) {
133 changed = 1;
134 if (pin)
135 snd_soc_dapm_enable_pin(dapm, "Microphone");
136 else
137 snd_soc_dapm_disable_pin(dapm, "Microphone");
138 }
139 pin = !!(pins & (1 << AMS_DELTA_SPEAKER));
140 if (pin != snd_soc_dapm_get_pin_status(dapm, "Speaker")) {
141 changed = 1;
142 if (pin)
143 snd_soc_dapm_enable_pin(dapm, "Speaker");
144 else
145 snd_soc_dapm_disable_pin(dapm, "Speaker");
146 }
147 pin = !!(pins & (1 << AMS_DELTA_AGC));
148 if (pin != ams_delta_audio_agc) {
149 ams_delta_audio_agc = pin;
150 changed = 1;
151 if (pin)
152 snd_soc_dapm_enable_pin(dapm, "AGCIN");
153 else
154 snd_soc_dapm_disable_pin(dapm, "AGCIN");
155 }
156 if (changed)
157 snd_soc_dapm_sync(dapm);
158
159 mutex_unlock(&codec->mutex);
160
161 return changed;
162 }
163
164 static int ams_delta_get_audio_mode(struct snd_kcontrol *kcontrol,
165 struct snd_ctl_elem_value *ucontrol)
166 {
167 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
168 struct snd_soc_dapm_context *dapm = &codec->dapm;
169 unsigned short pins, mode;
170
171 pins = ((snd_soc_dapm_get_pin_status(dapm, "Mouthpiece") <<
172 AMS_DELTA_MOUTHPIECE) |
173 (snd_soc_dapm_get_pin_status(dapm, "Earpiece") <<
174 AMS_DELTA_EARPIECE));
175 if (pins)
176 pins |= (snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
177 AMS_DELTA_MICROPHONE);
178 else
179 pins = ((snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
180 AMS_DELTA_MICROPHONE) |
181 (snd_soc_dapm_get_pin_status(dapm, "Speaker") <<
182 AMS_DELTA_SPEAKER) |
183 (ams_delta_audio_agc << AMS_DELTA_AGC));
184
185 for (mode = 0; mode < ARRAY_SIZE(ams_delta_audio_mode); mode++)
186 if (pins == ams_delta_audio_mode_pins[mode])
187 break;
188
189 if (mode >= ARRAY_SIZE(ams_delta_audio_mode))
190 return -EINVAL;
191
192 ucontrol->value.enumerated.item[0] = mode;
193
194 return 0;
195 }
196
197 static const struct soc_enum ams_delta_audio_enum[] = {
198 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ams_delta_audio_mode),
199 ams_delta_audio_mode),
200 };
201
202 static const struct snd_kcontrol_new ams_delta_audio_controls[] = {
203 SOC_ENUM_EXT("Audio Mode", ams_delta_audio_enum[0],
204 ams_delta_get_audio_mode, ams_delta_set_audio_mode),
205 };
206
207 /* Hook switch */
208 static struct snd_soc_jack ams_delta_hook_switch;
209 static struct snd_soc_jack_gpio ams_delta_hook_switch_gpios[] = {
210 {
211 .gpio = 4,
212 .name = "hook_switch",
213 .report = SND_JACK_HEADSET,
214 .invert = 1,
215 .debounce_time = 150,
216 }
217 };
218
219 /* After we are able to control the codec over the modem,
220 * the hook switch can be used for dynamic DAPM reconfiguration. */
221 static struct snd_soc_jack_pin ams_delta_hook_switch_pins[] = {
222 /* Handset */
223 {
224 .pin = "Mouthpiece",
225 .mask = SND_JACK_MICROPHONE,
226 },
227 {
228 .pin = "Earpiece",
229 .mask = SND_JACK_HEADPHONE,
230 },
231 /* Handsfree */
232 {
233 .pin = "Microphone",
234 .mask = SND_JACK_MICROPHONE,
235 .invert = 1,
236 },
237 {
238 .pin = "Speaker",
239 .mask = SND_JACK_HEADPHONE,
240 .invert = 1,
241 },
242 };
243
244
245 /*
246 * Modem line discipline, required for making above controls functional.
247 * Activated from userspace with ldattach, possibly invoked from udev rule.
248 */
249
250 /* To actually apply any modem controlled configuration changes to the codec,
251 * we must connect codec DAI pins to the modem for a moment. Be carefull not
252 * to interfere with our digital mute function that shares the same hardware. */
253 static struct timer_list cx81801_timer;
254 static bool cx81801_cmd_pending;
255 static bool ams_delta_muted;
256 static DEFINE_SPINLOCK(ams_delta_lock);
257
258 static void cx81801_timeout(unsigned long data)
259 {
260 int muted;
261
262 spin_lock(&ams_delta_lock);
263 cx81801_cmd_pending = 0;
264 muted = ams_delta_muted;
265 spin_unlock(&ams_delta_lock);
266
267 /* Reconnect the codec DAI back from the modem to the CPU DAI
268 * only if digital mute still off */
269 if (!muted)
270 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, 0);
271 }
272
273 /*
274 * Used for passing a codec structure pointer
275 * from the board initialization code to the tty line discipline.
276 */
277 static struct snd_soc_codec *cx20442_codec;
278
279 /* Line discipline .open() */
280 static int cx81801_open(struct tty_struct *tty)
281 {
282 int ret;
283
284 if (!cx20442_codec)
285 return -ENODEV;
286
287 /*
288 * Pass the codec structure pointer for use by other ldisc callbacks,
289 * both the card and the codec specific parts.
290 */
291 tty->disc_data = cx20442_codec;
292
293 ret = v253_ops.open(tty);
294
295 if (ret < 0)
296 tty->disc_data = NULL;
297
298 return ret;
299 }
300
301 /* Line discipline .close() */
302 static void cx81801_close(struct tty_struct *tty)
303 {
304 struct snd_soc_codec *codec = tty->disc_data;
305 struct snd_soc_dapm_context *dapm = &codec->dapm;
306
307 del_timer_sync(&cx81801_timer);
308
309 /* Prevent the hook switch from further changing the DAPM pins */
310 INIT_LIST_HEAD(&ams_delta_hook_switch.pins);
311
312 if (!codec)
313 return;
314
315 v253_ops.close(tty);
316
317 /* Revert back to default audio input/output constellation */
318 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
319 snd_soc_dapm_enable_pin(dapm, "Earpiece");
320 snd_soc_dapm_enable_pin(dapm, "Microphone");
321 snd_soc_dapm_disable_pin(dapm, "Speaker");
322 snd_soc_dapm_disable_pin(dapm, "AGCIN");
323 snd_soc_dapm_sync(dapm);
324 }
325
326 /* Line discipline .hangup() */
327 static int cx81801_hangup(struct tty_struct *tty)
328 {
329 cx81801_close(tty);
330 return 0;
331 }
332
333 /* Line discipline .recieve_buf() */
334 static void cx81801_receive(struct tty_struct *tty,
335 const unsigned char *cp, char *fp, int count)
336 {
337 struct snd_soc_codec *codec = tty->disc_data;
338 const unsigned char *c;
339 int apply, ret;
340
341 if (!codec)
342 return;
343
344 if (!codec->hw_write) {
345 /* First modem response, complete setup procedure */
346
347 /* Initialize timer used for config pulse generation */
348 setup_timer(&cx81801_timer, cx81801_timeout, 0);
349
350 v253_ops.receive_buf(tty, cp, fp, count);
351
352 /* Link hook switch to DAPM pins */
353 ret = snd_soc_jack_add_pins(&ams_delta_hook_switch,
354 ARRAY_SIZE(ams_delta_hook_switch_pins),
355 ams_delta_hook_switch_pins);
356 if (ret)
357 dev_warn(codec->dev,
358 "Failed to link hook switch to DAPM pins, "
359 "will continue with hook switch unlinked.\n");
360
361 return;
362 }
363
364 v253_ops.receive_buf(tty, cp, fp, count);
365
366 for (c = &cp[count - 1]; c >= cp; c--) {
367 if (*c != '\r')
368 continue;
369 /* Complete modem response received, apply config to codec */
370
371 spin_lock_bh(&ams_delta_lock);
372 mod_timer(&cx81801_timer, jiffies + msecs_to_jiffies(150));
373 apply = !ams_delta_muted && !cx81801_cmd_pending;
374 cx81801_cmd_pending = 1;
375 spin_unlock_bh(&ams_delta_lock);
376
377 /* Apply config pulse by connecting the codec to the modem
378 * if not already done */
379 if (apply)
380 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
381 AMS_DELTA_LATCH2_MODEM_CODEC);
382 break;
383 }
384 }
385
386 /* Line discipline .write_wakeup() */
387 static void cx81801_wakeup(struct tty_struct *tty)
388 {
389 v253_ops.write_wakeup(tty);
390 }
391
392 static struct tty_ldisc_ops cx81801_ops = {
393 .magic = TTY_LDISC_MAGIC,
394 .name = "cx81801",
395 .owner = THIS_MODULE,
396 .open = cx81801_open,
397 .close = cx81801_close,
398 .hangup = cx81801_hangup,
399 .receive_buf = cx81801_receive,
400 .write_wakeup = cx81801_wakeup,
401 };
402
403
404 /*
405 * Even if not very usefull, the sound card can still work without any of the
406 * above functonality activated. You can still control its audio input/output
407 * constellation and speakerphone gain from userspace by issueing AT commands
408 * over the modem port.
409 */
410
411 static int ams_delta_hw_params(struct snd_pcm_substream *substream,
412 struct snd_pcm_hw_params *params)
413 {
414 struct snd_soc_pcm_runtime *rtd = substream->private_data;
415
416 /* Set cpu DAI configuration */
417 return snd_soc_dai_set_fmt(rtd->cpu_dai,
418 SND_SOC_DAIFMT_DSP_A |
419 SND_SOC_DAIFMT_NB_NF |
420 SND_SOC_DAIFMT_CBM_CFM);
421 }
422
423 static struct snd_soc_ops ams_delta_ops = {
424 .hw_params = ams_delta_hw_params,
425 };
426
427
428 /* Board specific codec bias level control */
429 static int ams_delta_set_bias_level(struct snd_soc_card *card,
430 enum snd_soc_bias_level level)
431 {
432 struct snd_soc_codec *codec = card->rtd->codec;
433
434 switch (level) {
435 case SND_SOC_BIAS_ON:
436 case SND_SOC_BIAS_PREPARE:
437 case SND_SOC_BIAS_STANDBY:
438 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
439 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET,
440 AMS_DELTA_LATCH2_MODEM_NRESET);
441 break;
442 case SND_SOC_BIAS_OFF:
443 if (codec->dapm.bias_level != SND_SOC_BIAS_OFF)
444 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET,
445 0);
446 }
447 codec->dapm.bias_level = level;
448
449 return 0;
450 }
451
452 /* Digital mute implemented using modem/CPU multiplexer.
453 * Shares hardware with codec config pulse generation */
454 static bool ams_delta_muted = 1;
455
456 static int ams_delta_digital_mute(struct snd_soc_dai *dai, int mute)
457 {
458 int apply;
459
460 if (ams_delta_muted == mute)
461 return 0;
462
463 spin_lock_bh(&ams_delta_lock);
464 ams_delta_muted = mute;
465 apply = !cx81801_cmd_pending;
466 spin_unlock_bh(&ams_delta_lock);
467
468 if (apply)
469 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
470 mute ? AMS_DELTA_LATCH2_MODEM_CODEC : 0);
471 return 0;
472 }
473
474 /* Our codec DAI probably doesn't have its own .ops structure */
475 static struct snd_soc_dai_ops ams_delta_dai_ops = {
476 .digital_mute = ams_delta_digital_mute,
477 };
478
479 /* Will be used if the codec ever has its own digital_mute function */
480 static int ams_delta_startup(struct snd_pcm_substream *substream)
481 {
482 return ams_delta_digital_mute(NULL, 0);
483 }
484
485 static void ams_delta_shutdown(struct snd_pcm_substream *substream)
486 {
487 ams_delta_digital_mute(NULL, 1);
488 }
489
490
491 /*
492 * Card initialization
493 */
494
495 static int ams_delta_cx20442_init(struct snd_soc_pcm_runtime *rtd)
496 {
497 struct snd_soc_codec *codec = rtd->codec;
498 struct snd_soc_dapm_context *dapm = &codec->dapm;
499 struct snd_soc_dai *codec_dai = rtd->codec_dai;
500 struct snd_soc_card *card = rtd->card;
501 int ret;
502 /* Codec is ready, now add/activate board specific controls */
503
504 /* Store a pointer to the codec structure for tty ldisc use */
505 cx20442_codec = codec;
506
507 /* Set up digital mute if not provided by the codec */
508 if (!codec_dai->driver->ops) {
509 codec_dai->driver->ops = &ams_delta_dai_ops;
510 } else {
511 ams_delta_ops.startup = ams_delta_startup;
512 ams_delta_ops.shutdown = ams_delta_shutdown;
513 }
514
515 /* Set codec bias level */
516 ams_delta_set_bias_level(card, SND_SOC_BIAS_STANDBY);
517
518 /* Add hook switch - can be used to control the codec from userspace
519 * even if line discipline fails */
520 ret = snd_soc_jack_new(rtd->codec, "hook_switch",
521 SND_JACK_HEADSET, &ams_delta_hook_switch);
522 if (ret)
523 dev_warn(card->dev,
524 "Failed to allocate resources for hook switch, "
525 "will continue without one.\n");
526 else {
527 ret = snd_soc_jack_add_gpios(&ams_delta_hook_switch,
528 ARRAY_SIZE(ams_delta_hook_switch_gpios),
529 ams_delta_hook_switch_gpios);
530 if (ret)
531 dev_warn(card->dev,
532 "Failed to set up hook switch GPIO line, "
533 "will continue with hook switch inactive.\n");
534 }
535
536 /* Register optional line discipline for over the modem control */
537 ret = tty_register_ldisc(N_V253, &cx81801_ops);
538 if (ret) {
539 dev_warn(card->dev,
540 "Failed to register line discipline, "
541 "will continue without any controls.\n");
542 return 0;
543 }
544
545 /* Add board specific DAPM widgets and routes */
546 ret = snd_soc_dapm_new_controls(dapm, ams_delta_dapm_widgets,
547 ARRAY_SIZE(ams_delta_dapm_widgets));
548 if (ret) {
549 dev_warn(card->dev,
550 "Failed to register DAPM controls, "
551 "will continue without any.\n");
552 return 0;
553 }
554
555 ret = snd_soc_dapm_add_routes(dapm, ams_delta_audio_map,
556 ARRAY_SIZE(ams_delta_audio_map));
557 if (ret) {
558 dev_warn(card->dev,
559 "Failed to set up DAPM routes, "
560 "will continue with codec default map.\n");
561 return 0;
562 }
563
564 /* Set up initial pin constellation */
565 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
566 snd_soc_dapm_enable_pin(dapm, "Earpiece");
567 snd_soc_dapm_enable_pin(dapm, "Microphone");
568 snd_soc_dapm_disable_pin(dapm, "Speaker");
569 snd_soc_dapm_disable_pin(dapm, "AGCIN");
570 snd_soc_dapm_disable_pin(dapm, "AGCOUT");
571 snd_soc_dapm_sync(dapm);
572
573 /* Add virtual switch */
574 ret = snd_soc_add_controls(codec, ams_delta_audio_controls,
575 ARRAY_SIZE(ams_delta_audio_controls));
576 if (ret)
577 dev_warn(card->dev,
578 "Failed to register audio mode control, "
579 "will continue without it.\n");
580
581 return 0;
582 }
583
584 /* DAI glue - connects codec <--> CPU */
585 static struct snd_soc_dai_link ams_delta_dai_link = {
586 .name = "CX20442",
587 .stream_name = "CX20442",
588 .cpu_dai_name ="omap-mcbsp-dai.0",
589 .codec_dai_name = "cx20442-voice",
590 .init = ams_delta_cx20442_init,
591 .platform_name = "omap-pcm-audio",
592 .codec_name = "cx20442-codec",
593 .ops = &ams_delta_ops,
594 };
595
596 /* Audio card driver */
597 static struct snd_soc_card ams_delta_audio_card = {
598 .name = "AMS_DELTA",
599 .dai_link = &ams_delta_dai_link,
600 .num_links = 1,
601 .set_bias_level = ams_delta_set_bias_level,
602 };
603
604 /* Module init/exit */
605 static struct platform_device *ams_delta_audio_platform_device;
606 static struct platform_device *cx20442_platform_device;
607
608 static int __init ams_delta_module_init(void)
609 {
610 int ret;
611
612 if (!(machine_is_ams_delta()))
613 return -ENODEV;
614
615 ams_delta_audio_platform_device =
616 platform_device_alloc("soc-audio", -1);
617 if (!ams_delta_audio_platform_device)
618 return -ENOMEM;
619
620 platform_set_drvdata(ams_delta_audio_platform_device,
621 &ams_delta_audio_card);
622
623 ret = platform_device_add(ams_delta_audio_platform_device);
624 if (ret)
625 goto err;
626
627 /*
628 * Codec platform device could be registered from elsewhere (board?),
629 * but I do it here as it makes sense only if used with the card.
630 */
631 cx20442_platform_device =
632 platform_device_register_simple("cx20442-codec", -1, NULL, 0);
633 return 0;
634 err:
635 platform_device_put(ams_delta_audio_platform_device);
636 return ret;
637 }
638 module_init(ams_delta_module_init);
639
640 static void __exit ams_delta_module_exit(void)
641 {
642 if (tty_unregister_ldisc(N_V253) != 0)
643 dev_warn(&ams_delta_audio_platform_device->dev,
644 "failed to unregister V253 line discipline\n");
645
646 snd_soc_jack_free_gpios(&ams_delta_hook_switch,
647 ARRAY_SIZE(ams_delta_hook_switch_gpios),
648 ams_delta_hook_switch_gpios);
649
650 /* Keep modem power on */
651 ams_delta_set_bias_level(&ams_delta_audio_card, SND_SOC_BIAS_STANDBY);
652
653 platform_device_unregister(cx20442_platform_device);
654 platform_device_unregister(ams_delta_audio_platform_device);
655 }
656 module_exit(ams_delta_module_exit);
657
658 MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
659 MODULE_DESCRIPTION("ALSA SoC driver for Amstrad E3 (Delta) videophone");
660 MODULE_LICENSE("GPL");