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Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +02001/*
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>
Paul Gortmakerda155d52011-07-15 12:38:28 -040028#include <linux/module.h>
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020029
Liam Girdwoodce6120c2010-11-05 15:53:46 +020030#include <sound/soc.h>
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020031#include <sound/jack.h>
32
33#include <asm/mach-types.h>
34
Tony Lindgrene27e35e2012-09-19 10:33:43 -070035#include <mach/board-ams-delta.h>
Arnd Bergmann22037472012-08-24 15:21:06 +020036#include <linux/platform_data/asoc-ti-mcbsp.h>
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020037
38#include "omap-mcbsp.h"
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020039#include "../codecs/cx20442.h"
40
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020041/* Board specific DAPM widgets */
Janusz Krzysztofik02624622009-10-21 04:40:55 +020042static const struct snd_soc_dapm_widget ams_delta_dapm_widgets[] = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020043 /* Handset */
44 SND_SOC_DAPM_MIC("Mouthpiece", NULL),
45 SND_SOC_DAPM_HP("Earpiece", NULL),
46 /* Handsfree/Speakerphone */
47 SND_SOC_DAPM_MIC("Microphone", NULL),
48 SND_SOC_DAPM_SPK("Speaker", NULL),
49};
50
51/* How they are connected to codec pins */
52static const struct snd_soc_dapm_route ams_delta_audio_map[] = {
53 {"TELIN", NULL, "Mouthpiece"},
54 {"Earpiece", NULL, "TELOUT"},
55
56 {"MIC", NULL, "Microphone"},
57 {"Speaker", NULL, "SPKOUT"},
58};
59
60/*
61 * Controls, functional after the modem line discipline is activated.
62 */
63
64/* Virtual switch: audio input/output constellations */
65static const char *ams_delta_audio_mode[] =
66 {"Mixed", "Handset", "Handsfree", "Speakerphone"};
67
68/* Selection <-> pin translation */
69#define AMS_DELTA_MOUTHPIECE 0
70#define AMS_DELTA_EARPIECE 1
71#define AMS_DELTA_MICROPHONE 2
72#define AMS_DELTA_SPEAKER 3
73#define AMS_DELTA_AGC 4
74
75#define AMS_DELTA_MIXED ((1 << AMS_DELTA_EARPIECE) | \
76 (1 << AMS_DELTA_MICROPHONE))
77#define AMS_DELTA_HANDSET ((1 << AMS_DELTA_MOUTHPIECE) | \
78 (1 << AMS_DELTA_EARPIECE))
79#define AMS_DELTA_HANDSFREE ((1 << AMS_DELTA_MICROPHONE) | \
80 (1 << AMS_DELTA_SPEAKER))
81#define AMS_DELTA_SPEAKERPHONE (AMS_DELTA_HANDSFREE | (1 << AMS_DELTA_AGC))
82
Janusz Krzysztofik02624622009-10-21 04:40:55 +020083static const unsigned short ams_delta_audio_mode_pins[] = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020084 AMS_DELTA_MIXED,
85 AMS_DELTA_HANDSET,
86 AMS_DELTA_HANDSFREE,
87 AMS_DELTA_SPEAKERPHONE,
88};
89
90static unsigned short ams_delta_audio_agc;
91
Lars-Peter Clausen74a16722014-03-12 15:27:30 +010092/*
93 * Used for passing a codec structure pointer
94 * from the board initialization code to the tty line discipline.
95 */
96static struct snd_soc_codec *cx20442_codec;
97
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020098static int ams_delta_set_audio_mode(struct snd_kcontrol *kcontrol,
99 struct snd_ctl_elem_value *ucontrol)
100{
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100101 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
102 struct snd_soc_dapm_context *dapm = &card->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200103 struct soc_enum *control = (struct soc_enum *)kcontrol->private_value;
104 unsigned short pins;
105 int pin, changed = 0;
106
107 /* Refuse any mode changes if we are not able to control the codec. */
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100108 if (!cx20442_codec->hw_write)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200109 return -EUNATCH;
110
Takashi Iwai9a8d38d2014-02-18 08:11:42 +0100111 if (ucontrol->value.enumerated.item[0] >= control->items)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200112 return -EINVAL;
113
Charles Keepax03510ca2014-02-18 15:22:22 +0000114 snd_soc_dapm_mutex_lock(dapm);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200115
116 /* Translate selection to bitmap */
117 pins = ams_delta_audio_mode_pins[ucontrol->value.enumerated.item[0]];
118
119 /* Setup pins after corresponding bits if changed */
120 pin = !!(pins & (1 << AMS_DELTA_MOUTHPIECE));
Charles Keepax03510ca2014-02-18 15:22:22 +0000121
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200122 if (pin != snd_soc_dapm_get_pin_status(dapm, "Mouthpiece")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200123 changed = 1;
124 if (pin)
Charles Keepax03510ca2014-02-18 15:22:22 +0000125 snd_soc_dapm_enable_pin_unlocked(dapm, "Mouthpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200126 else
Charles Keepax03510ca2014-02-18 15:22:22 +0000127 snd_soc_dapm_disable_pin_unlocked(dapm, "Mouthpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200128 }
129 pin = !!(pins & (1 << AMS_DELTA_EARPIECE));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200130 if (pin != snd_soc_dapm_get_pin_status(dapm, "Earpiece")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200131 changed = 1;
132 if (pin)
Charles Keepax03510ca2014-02-18 15:22:22 +0000133 snd_soc_dapm_enable_pin_unlocked(dapm, "Earpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200134 else
Charles Keepax03510ca2014-02-18 15:22:22 +0000135 snd_soc_dapm_disable_pin_unlocked(dapm, "Earpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200136 }
137 pin = !!(pins & (1 << AMS_DELTA_MICROPHONE));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200138 if (pin != snd_soc_dapm_get_pin_status(dapm, "Microphone")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200139 changed = 1;
140 if (pin)
Charles Keepax03510ca2014-02-18 15:22:22 +0000141 snd_soc_dapm_enable_pin_unlocked(dapm, "Microphone");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200142 else
Charles Keepax03510ca2014-02-18 15:22:22 +0000143 snd_soc_dapm_disable_pin_unlocked(dapm, "Microphone");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200144 }
145 pin = !!(pins & (1 << AMS_DELTA_SPEAKER));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200146 if (pin != snd_soc_dapm_get_pin_status(dapm, "Speaker")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200147 changed = 1;
148 if (pin)
Charles Keepax03510ca2014-02-18 15:22:22 +0000149 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200150 else
Charles Keepax03510ca2014-02-18 15:22:22 +0000151 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200152 }
153 pin = !!(pins & (1 << AMS_DELTA_AGC));
154 if (pin != ams_delta_audio_agc) {
155 ams_delta_audio_agc = pin;
156 changed = 1;
157 if (pin)
Charles Keepax03510ca2014-02-18 15:22:22 +0000158 snd_soc_dapm_enable_pin_unlocked(dapm, "AGCIN");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200159 else
Charles Keepax03510ca2014-02-18 15:22:22 +0000160 snd_soc_dapm_disable_pin_unlocked(dapm, "AGCIN");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200161 }
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200162
Charles Keepax03510ca2014-02-18 15:22:22 +0000163 if (changed)
164 snd_soc_dapm_sync_unlocked(dapm);
165
166 snd_soc_dapm_mutex_unlock(dapm);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200167
168 return changed;
169}
170
171static int ams_delta_get_audio_mode(struct snd_kcontrol *kcontrol,
172 struct snd_ctl_elem_value *ucontrol)
173{
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100174 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
175 struct snd_soc_dapm_context *dapm = &card->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200176 unsigned short pins, mode;
177
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200178 pins = ((snd_soc_dapm_get_pin_status(dapm, "Mouthpiece") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200179 AMS_DELTA_MOUTHPIECE) |
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200180 (snd_soc_dapm_get_pin_status(dapm, "Earpiece") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200181 AMS_DELTA_EARPIECE));
182 if (pins)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200183 pins |= (snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200184 AMS_DELTA_MICROPHONE);
185 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200186 pins = ((snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200187 AMS_DELTA_MICROPHONE) |
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200188 (snd_soc_dapm_get_pin_status(dapm, "Speaker") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200189 AMS_DELTA_SPEAKER) |
190 (ams_delta_audio_agc << AMS_DELTA_AGC));
191
192 for (mode = 0; mode < ARRAY_SIZE(ams_delta_audio_mode); mode++)
193 if (pins == ams_delta_audio_mode_pins[mode])
194 break;
195
196 if (mode >= ARRAY_SIZE(ams_delta_audio_mode))
197 return -EINVAL;
198
199 ucontrol->value.enumerated.item[0] = mode;
200
201 return 0;
202}
203
Takashi Iwai7cb5e1b2014-02-18 10:47:34 +0100204static const SOC_ENUM_SINGLE_EXT_DECL(ams_delta_audio_enum,
205 ams_delta_audio_mode);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200206
207static const struct snd_kcontrol_new ams_delta_audio_controls[] = {
Takashi Iwai7cb5e1b2014-02-18 10:47:34 +0100208 SOC_ENUM_EXT("Audio Mode", ams_delta_audio_enum,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200209 ams_delta_get_audio_mode, ams_delta_set_audio_mode),
210};
211
212/* Hook switch */
213static struct snd_soc_jack ams_delta_hook_switch;
214static struct snd_soc_jack_gpio ams_delta_hook_switch_gpios[] = {
215 {
216 .gpio = 4,
217 .name = "hook_switch",
218 .report = SND_JACK_HEADSET,
219 .invert = 1,
220 .debounce_time = 150,
221 }
222};
223
224/* After we are able to control the codec over the modem,
225 * the hook switch can be used for dynamic DAPM reconfiguration. */
226static struct snd_soc_jack_pin ams_delta_hook_switch_pins[] = {
227 /* Handset */
228 {
229 .pin = "Mouthpiece",
230 .mask = SND_JACK_MICROPHONE,
231 },
232 {
233 .pin = "Earpiece",
234 .mask = SND_JACK_HEADPHONE,
235 },
236 /* Handsfree */
237 {
238 .pin = "Microphone",
239 .mask = SND_JACK_MICROPHONE,
240 .invert = 1,
241 },
242 {
243 .pin = "Speaker",
244 .mask = SND_JACK_HEADPHONE,
245 .invert = 1,
246 },
247};
248
249
250/*
251 * Modem line discipline, required for making above controls functional.
252 * Activated from userspace with ldattach, possibly invoked from udev rule.
253 */
254
255/* To actually apply any modem controlled configuration changes to the codec,
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300256 * we must connect codec DAI pins to the modem for a moment. Be careful not
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200257 * to interfere with our digital mute function that shares the same hardware. */
258static struct timer_list cx81801_timer;
259static bool cx81801_cmd_pending;
260static bool ams_delta_muted;
261static DEFINE_SPINLOCK(ams_delta_lock);
262
263static void cx81801_timeout(unsigned long data)
264{
265 int muted;
266
267 spin_lock(&ams_delta_lock);
268 cx81801_cmd_pending = 0;
269 muted = ams_delta_muted;
270 spin_unlock(&ams_delta_lock);
271
272 /* Reconnect the codec DAI back from the modem to the CPU DAI
273 * only if digital mute still off */
274 if (!muted)
275 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, 0);
276}
277
278/* Line discipline .open() */
279static int cx81801_open(struct tty_struct *tty)
280{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000281 int ret;
282
283 if (!cx20442_codec)
284 return -ENODEV;
285
286 /*
287 * Pass the codec structure pointer for use by other ldisc callbacks,
288 * both the card and the codec specific parts.
289 */
290 tty->disc_data = cx20442_codec;
291
292 ret = v253_ops.open(tty);
293
294 if (ret < 0)
295 tty->disc_data = NULL;
296
297 return ret;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200298}
299
300/* Line discipline .close() */
301static void cx81801_close(struct tty_struct *tty)
302{
303 struct snd_soc_codec *codec = tty->disc_data;
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100304 struct snd_soc_dapm_context *dapm = &codec->card->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200305
306 del_timer_sync(&cx81801_timer);
307
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200308 /* Prevent the hook switch from further changing the DAPM pins */
309 INIT_LIST_HEAD(&ams_delta_hook_switch.pins);
310
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000311 if (!codec)
312 return;
313
314 v253_ops.close(tty);
315
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200316 /* Revert back to default audio input/output constellation */
Charles Keepax03510ca2014-02-18 15:22:22 +0000317 snd_soc_dapm_mutex_lock(dapm);
318
319 snd_soc_dapm_disable_pin_unlocked(dapm, "Mouthpiece");
320 snd_soc_dapm_enable_pin_unlocked(dapm, "Earpiece");
321 snd_soc_dapm_enable_pin_unlocked(dapm, "Microphone");
322 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
323 snd_soc_dapm_disable_pin_unlocked(dapm, "AGCIN");
324
325 snd_soc_dapm_sync_unlocked(dapm);
326
Lars-Peter Clausene95d73c2014-03-12 15:27:29 +0100327 snd_soc_dapm_mutex_unlock(dapm);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200328}
329
330/* Line discipline .hangup() */
331static int cx81801_hangup(struct tty_struct *tty)
332{
333 cx81801_close(tty);
334 return 0;
335}
336
Joe Perchesdbc62212011-06-23 11:39:19 -0700337/* Line discipline .receive_buf() */
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200338static void cx81801_receive(struct tty_struct *tty,
339 const unsigned char *cp, char *fp, int count)
340{
341 struct snd_soc_codec *codec = tty->disc_data;
342 const unsigned char *c;
343 int apply, ret;
344
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000345 if (!codec)
346 return;
347
348 if (!codec->hw_write) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200349 /* First modem response, complete setup procedure */
350
351 /* Initialize timer used for config pulse generation */
352 setup_timer(&cx81801_timer, cx81801_timeout, 0);
353
354 v253_ops.receive_buf(tty, cp, fp, count);
355
356 /* Link hook switch to DAPM pins */
357 ret = snd_soc_jack_add_pins(&ams_delta_hook_switch,
358 ARRAY_SIZE(ams_delta_hook_switch_pins),
359 ams_delta_hook_switch_pins);
360 if (ret)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000361 dev_warn(codec->dev,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200362 "Failed to link hook switch to DAPM pins, "
363 "will continue with hook switch unlinked.\n");
364
365 return;
366 }
367
368 v253_ops.receive_buf(tty, cp, fp, count);
369
370 for (c = &cp[count - 1]; c >= cp; c--) {
371 if (*c != '\r')
372 continue;
373 /* Complete modem response received, apply config to codec */
374
375 spin_lock_bh(&ams_delta_lock);
376 mod_timer(&cx81801_timer, jiffies + msecs_to_jiffies(150));
377 apply = !ams_delta_muted && !cx81801_cmd_pending;
378 cx81801_cmd_pending = 1;
379 spin_unlock_bh(&ams_delta_lock);
380
381 /* Apply config pulse by connecting the codec to the modem
382 * if not already done */
383 if (apply)
384 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
385 AMS_DELTA_LATCH2_MODEM_CODEC);
386 break;
387 }
388}
389
390/* Line discipline .write_wakeup() */
391static void cx81801_wakeup(struct tty_struct *tty)
392{
393 v253_ops.write_wakeup(tty);
394}
395
396static struct tty_ldisc_ops cx81801_ops = {
397 .magic = TTY_LDISC_MAGIC,
398 .name = "cx81801",
399 .owner = THIS_MODULE,
400 .open = cx81801_open,
401 .close = cx81801_close,
402 .hangup = cx81801_hangup,
403 .receive_buf = cx81801_receive,
404 .write_wakeup = cx81801_wakeup,
405};
406
407
408/*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300409 * Even if not very useful, the sound card can still work without any of the
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200410 * above functonality activated. You can still control its audio input/output
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300411 * constellation and speakerphone gain from userspace by issuing AT commands
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200412 * over the modem port.
413 */
414
415static int ams_delta_hw_params(struct snd_pcm_substream *substream,
416 struct snd_pcm_hw_params *params)
417{
418 struct snd_soc_pcm_runtime *rtd = substream->private_data;
419
420 /* Set cpu DAI configuration */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000421 return snd_soc_dai_set_fmt(rtd->cpu_dai,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200422 SND_SOC_DAIFMT_DSP_A |
423 SND_SOC_DAIFMT_NB_NF |
424 SND_SOC_DAIFMT_CBM_CFM);
425}
426
427static struct snd_soc_ops ams_delta_ops = {
428 .hw_params = ams_delta_hw_params,
429};
430
431
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200432/* Digital mute implemented using modem/CPU multiplexer.
433 * Shares hardware with codec config pulse generation */
434static bool ams_delta_muted = 1;
435
436static int ams_delta_digital_mute(struct snd_soc_dai *dai, int mute)
437{
438 int apply;
439
440 if (ams_delta_muted == mute)
441 return 0;
442
443 spin_lock_bh(&ams_delta_lock);
444 ams_delta_muted = mute;
445 apply = !cx81801_cmd_pending;
446 spin_unlock_bh(&ams_delta_lock);
447
448 if (apply)
449 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
450 mute ? AMS_DELTA_LATCH2_MODEM_CODEC : 0);
451 return 0;
452}
453
454/* Our codec DAI probably doesn't have its own .ops structure */
Lars-Peter Clausen85e76522011-11-23 11:40:40 +0100455static const struct snd_soc_dai_ops ams_delta_dai_ops = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200456 .digital_mute = ams_delta_digital_mute,
457};
458
459/* Will be used if the codec ever has its own digital_mute function */
460static int ams_delta_startup(struct snd_pcm_substream *substream)
461{
462 return ams_delta_digital_mute(NULL, 0);
463}
464
465static void ams_delta_shutdown(struct snd_pcm_substream *substream)
466{
467 ams_delta_digital_mute(NULL, 1);
468}
469
470
471/*
472 * Card initialization
473 */
474
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000475static int ams_delta_cx20442_init(struct snd_soc_pcm_runtime *rtd)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200476{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000477 struct snd_soc_dai *codec_dai = rtd->codec_dai;
478 struct snd_soc_card *card = rtd->card;
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100479 struct snd_soc_dapm_context *dapm = &card->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200480 int ret;
481 /* Codec is ready, now add/activate board specific controls */
482
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000483 /* Store a pointer to the codec structure for tty ldisc use */
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100484 cx20442_codec = rtd->codec;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000485
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200486 /* Set up digital mute if not provided by the codec */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000487 if (!codec_dai->driver->ops) {
488 codec_dai->driver->ops = &ams_delta_dai_ops;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200489 } else {
490 ams_delta_ops.startup = ams_delta_startup;
491 ams_delta_ops.shutdown = ams_delta_shutdown;
492 }
493
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200494 /* Add hook switch - can be used to control the codec from userspace
495 * even if line discipline fails */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000496 ret = snd_soc_jack_new(rtd->codec, "hook_switch",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200497 SND_JACK_HEADSET, &ams_delta_hook_switch);
498 if (ret)
499 dev_warn(card->dev,
500 "Failed to allocate resources for hook switch, "
501 "will continue without one.\n");
502 else {
503 ret = snd_soc_jack_add_gpios(&ams_delta_hook_switch,
504 ARRAY_SIZE(ams_delta_hook_switch_gpios),
505 ams_delta_hook_switch_gpios);
506 if (ret)
507 dev_warn(card->dev,
508 "Failed to set up hook switch GPIO line, "
509 "will continue with hook switch inactive.\n");
510 }
511
512 /* Register optional line discipline for over the modem control */
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200513 ret = tty_register_ldisc(N_V253, &cx81801_ops);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200514 if (ret) {
515 dev_warn(card->dev,
516 "Failed to register line discipline, "
517 "will continue without any controls.\n");
518 return 0;
519 }
520
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200521 /* Set up initial pin constellation */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200522 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
523 snd_soc_dapm_enable_pin(dapm, "Earpiece");
524 snd_soc_dapm_enable_pin(dapm, "Microphone");
525 snd_soc_dapm_disable_pin(dapm, "Speaker");
526 snd_soc_dapm_disable_pin(dapm, "AGCIN");
527 snd_soc_dapm_disable_pin(dapm, "AGCOUT");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200528
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200529 return 0;
530}
531
532/* DAI glue - connects codec <--> CPU */
533static struct snd_soc_dai_link ams_delta_dai_link = {
534 .name = "CX20442",
535 .stream_name = "CX20442",
Peter Ujfalusi45656b42012-02-14 18:20:58 +0200536 .cpu_dai_name = "omap-mcbsp.1",
Janusz Krzysztofik53946372010-08-19 15:15:50 +0200537 .codec_dai_name = "cx20442-voice",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200538 .init = ams_delta_cx20442_init,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000539 .platform_name = "omap-pcm-audio",
540 .codec_name = "cx20442-codec",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200541 .ops = &ams_delta_ops,
542};
543
544/* Audio card driver */
545static struct snd_soc_card ams_delta_audio_card = {
546 .name = "AMS_DELTA",
Axel Linb425b882011-12-22 11:08:59 +0800547 .owner = THIS_MODULE,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200548 .dai_link = &ams_delta_dai_link,
549 .num_links = 1,
Lars-Peter Clausen74a16722014-03-12 15:27:30 +0100550
551 .controls = ams_delta_audio_controls,
552 .num_controls = ARRAY_SIZE(ams_delta_audio_controls),
553 .dapm_widgets = ams_delta_dapm_widgets,
554 .num_dapm_widgets = ARRAY_SIZE(ams_delta_dapm_widgets),
555 .dapm_routes = ams_delta_audio_map,
556 .num_dapm_routes = ARRAY_SIZE(ams_delta_audio_map),
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200557};
558
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200559/* Module init/exit */
Bill Pemberton7ff60002012-12-07 09:26:29 -0500560static int ams_delta_probe(struct platform_device *pdev)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200561{
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200562 struct snd_soc_card *card = &ams_delta_audio_card;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200563 int ret;
564
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200565 card->dev = &pdev->dev;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200566
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200567 ret = snd_soc_register_card(card);
568 if (ret) {
569 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
570 card->dev = NULL;
571 return ret;
572 }
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200573 return 0;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200574}
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200575
Bill Pemberton7ff60002012-12-07 09:26:29 -0500576static int ams_delta_remove(struct platform_device *pdev)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200577{
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200578 struct snd_soc_card *card = platform_get_drvdata(pdev);
579
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200580 if (tty_unregister_ldisc(N_V253) != 0)
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200581 dev_warn(&pdev->dev,
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200582 "failed to unregister V253 line discipline\n");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200583
584 snd_soc_jack_free_gpios(&ams_delta_hook_switch,
585 ARRAY_SIZE(ams_delta_hook_switch_gpios),
586 ams_delta_hook_switch_gpios);
587
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200588 snd_soc_unregister_card(card);
589 card->dev = NULL;
590 return 0;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200591}
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200592
593#define DRV_NAME "ams-delta-audio"
594
595static struct platform_driver ams_delta_driver = {
596 .driver = {
597 .name = DRV_NAME,
598 .owner = THIS_MODULE,
599 },
600 .probe = ams_delta_probe,
Bill Pemberton7ff60002012-12-07 09:26:29 -0500601 .remove = ams_delta_remove,
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200602};
603
604module_platform_driver(ams_delta_driver);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200605
606MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
607MODULE_DESCRIPTION("ALSA SoC driver for Amstrad E3 (Delta) videophone");
608MODULE_LICENSE("GPL");
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200609MODULE_ALIAS("platform:" DRV_NAME);