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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"
39#include "omap-pcm.h"
40#include "../codecs/cx20442.h"
41
42
43/* Board specific DAPM widgets */
Janusz Krzysztofik02624622009-10-21 04:40:55 +020044static const struct snd_soc_dapm_widget ams_delta_dapm_widgets[] = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020045 /* Handset */
46 SND_SOC_DAPM_MIC("Mouthpiece", NULL),
47 SND_SOC_DAPM_HP("Earpiece", NULL),
48 /* Handsfree/Speakerphone */
49 SND_SOC_DAPM_MIC("Microphone", NULL),
50 SND_SOC_DAPM_SPK("Speaker", NULL),
51};
52
53/* How they are connected to codec pins */
54static const struct snd_soc_dapm_route ams_delta_audio_map[] = {
55 {"TELIN", NULL, "Mouthpiece"},
56 {"Earpiece", NULL, "TELOUT"},
57
58 {"MIC", NULL, "Microphone"},
59 {"Speaker", NULL, "SPKOUT"},
60};
61
62/*
63 * Controls, functional after the modem line discipline is activated.
64 */
65
66/* Virtual switch: audio input/output constellations */
67static const char *ams_delta_audio_mode[] =
68 {"Mixed", "Handset", "Handsfree", "Speakerphone"};
69
70/* Selection <-> pin translation */
71#define AMS_DELTA_MOUTHPIECE 0
72#define AMS_DELTA_EARPIECE 1
73#define AMS_DELTA_MICROPHONE 2
74#define AMS_DELTA_SPEAKER 3
75#define AMS_DELTA_AGC 4
76
77#define AMS_DELTA_MIXED ((1 << AMS_DELTA_EARPIECE) | \
78 (1 << AMS_DELTA_MICROPHONE))
79#define AMS_DELTA_HANDSET ((1 << AMS_DELTA_MOUTHPIECE) | \
80 (1 << AMS_DELTA_EARPIECE))
81#define AMS_DELTA_HANDSFREE ((1 << AMS_DELTA_MICROPHONE) | \
82 (1 << AMS_DELTA_SPEAKER))
83#define AMS_DELTA_SPEAKERPHONE (AMS_DELTA_HANDSFREE | (1 << AMS_DELTA_AGC))
84
Janusz Krzysztofik02624622009-10-21 04:40:55 +020085static const unsigned short ams_delta_audio_mode_pins[] = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020086 AMS_DELTA_MIXED,
87 AMS_DELTA_HANDSET,
88 AMS_DELTA_HANDSFREE,
89 AMS_DELTA_SPEAKERPHONE,
90};
91
92static unsigned short ams_delta_audio_agc;
93
94static int ams_delta_set_audio_mode(struct snd_kcontrol *kcontrol,
95 struct snd_ctl_elem_value *ucontrol)
96{
97 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
Liam Girdwoodce6120c2010-11-05 15:53:46 +020098 struct snd_soc_dapm_context *dapm = &codec->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +020099 struct soc_enum *control = (struct soc_enum *)kcontrol->private_value;
100 unsigned short pins;
101 int pin, changed = 0;
102
103 /* Refuse any mode changes if we are not able to control the codec. */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000104 if (!codec->hw_write)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200105 return -EUNATCH;
106
107 if (ucontrol->value.enumerated.item[0] >= control->max)
108 return -EINVAL;
109
110 mutex_lock(&codec->mutex);
111
112 /* Translate selection to bitmap */
113 pins = ams_delta_audio_mode_pins[ucontrol->value.enumerated.item[0]];
114
115 /* Setup pins after corresponding bits if changed */
116 pin = !!(pins & (1 << AMS_DELTA_MOUTHPIECE));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200117 if (pin != snd_soc_dapm_get_pin_status(dapm, "Mouthpiece")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200118 changed = 1;
119 if (pin)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200120 snd_soc_dapm_enable_pin(dapm, "Mouthpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200121 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200122 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200123 }
124 pin = !!(pins & (1 << AMS_DELTA_EARPIECE));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200125 if (pin != snd_soc_dapm_get_pin_status(dapm, "Earpiece")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200126 changed = 1;
127 if (pin)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200128 snd_soc_dapm_enable_pin(dapm, "Earpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200129 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200130 snd_soc_dapm_disable_pin(dapm, "Earpiece");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200131 }
132 pin = !!(pins & (1 << AMS_DELTA_MICROPHONE));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200133 if (pin != snd_soc_dapm_get_pin_status(dapm, "Microphone")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200134 changed = 1;
135 if (pin)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200136 snd_soc_dapm_enable_pin(dapm, "Microphone");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200137 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200138 snd_soc_dapm_disable_pin(dapm, "Microphone");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200139 }
140 pin = !!(pins & (1 << AMS_DELTA_SPEAKER));
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200141 if (pin != snd_soc_dapm_get_pin_status(dapm, "Speaker")) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200142 changed = 1;
143 if (pin)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200144 snd_soc_dapm_enable_pin(dapm, "Speaker");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200145 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200146 snd_soc_dapm_disable_pin(dapm, "Speaker");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200147 }
148 pin = !!(pins & (1 << AMS_DELTA_AGC));
149 if (pin != ams_delta_audio_agc) {
150 ams_delta_audio_agc = pin;
151 changed = 1;
152 if (pin)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200153 snd_soc_dapm_enable_pin(dapm, "AGCIN");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200154 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200155 snd_soc_dapm_disable_pin(dapm, "AGCIN");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200156 }
157 if (changed)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200158 snd_soc_dapm_sync(dapm);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200159
160 mutex_unlock(&codec->mutex);
161
162 return changed;
163}
164
165static int ams_delta_get_audio_mode(struct snd_kcontrol *kcontrol,
166 struct snd_ctl_elem_value *ucontrol)
167{
168 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200169 struct snd_soc_dapm_context *dapm = &codec->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200170 unsigned short pins, mode;
171
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200172 pins = ((snd_soc_dapm_get_pin_status(dapm, "Mouthpiece") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200173 AMS_DELTA_MOUTHPIECE) |
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200174 (snd_soc_dapm_get_pin_status(dapm, "Earpiece") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200175 AMS_DELTA_EARPIECE));
176 if (pins)
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200177 pins |= (snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200178 AMS_DELTA_MICROPHONE);
179 else
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200180 pins = ((snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200181 AMS_DELTA_MICROPHONE) |
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200182 (snd_soc_dapm_get_pin_status(dapm, "Speaker") <<
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200183 AMS_DELTA_SPEAKER) |
184 (ams_delta_audio_agc << AMS_DELTA_AGC));
185
186 for (mode = 0; mode < ARRAY_SIZE(ams_delta_audio_mode); mode++)
187 if (pins == ams_delta_audio_mode_pins[mode])
188 break;
189
190 if (mode >= ARRAY_SIZE(ams_delta_audio_mode))
191 return -EINVAL;
192
193 ucontrol->value.enumerated.item[0] = mode;
194
195 return 0;
196}
197
198static const struct soc_enum ams_delta_audio_enum[] = {
199 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ams_delta_audio_mode),
200 ams_delta_audio_mode),
201};
202
203static const struct snd_kcontrol_new ams_delta_audio_controls[] = {
204 SOC_ENUM_EXT("Audio Mode", ams_delta_audio_enum[0],
205 ams_delta_get_audio_mode, ams_delta_set_audio_mode),
206};
207
208/* Hook switch */
209static struct snd_soc_jack ams_delta_hook_switch;
210static struct snd_soc_jack_gpio ams_delta_hook_switch_gpios[] = {
211 {
212 .gpio = 4,
213 .name = "hook_switch",
214 .report = SND_JACK_HEADSET,
215 .invert = 1,
216 .debounce_time = 150,
217 }
218};
219
220/* After we are able to control the codec over the modem,
221 * the hook switch can be used for dynamic DAPM reconfiguration. */
222static struct snd_soc_jack_pin ams_delta_hook_switch_pins[] = {
223 /* Handset */
224 {
225 .pin = "Mouthpiece",
226 .mask = SND_JACK_MICROPHONE,
227 },
228 {
229 .pin = "Earpiece",
230 .mask = SND_JACK_HEADPHONE,
231 },
232 /* Handsfree */
233 {
234 .pin = "Microphone",
235 .mask = SND_JACK_MICROPHONE,
236 .invert = 1,
237 },
238 {
239 .pin = "Speaker",
240 .mask = SND_JACK_HEADPHONE,
241 .invert = 1,
242 },
243};
244
245
246/*
247 * Modem line discipline, required for making above controls functional.
248 * Activated from userspace with ldattach, possibly invoked from udev rule.
249 */
250
251/* To actually apply any modem controlled configuration changes to the codec,
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300252 * we must connect codec DAI pins to the modem for a moment. Be careful not
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200253 * to interfere with our digital mute function that shares the same hardware. */
254static struct timer_list cx81801_timer;
255static bool cx81801_cmd_pending;
256static bool ams_delta_muted;
257static DEFINE_SPINLOCK(ams_delta_lock);
258
259static void cx81801_timeout(unsigned long data)
260{
261 int muted;
262
263 spin_lock(&ams_delta_lock);
264 cx81801_cmd_pending = 0;
265 muted = ams_delta_muted;
266 spin_unlock(&ams_delta_lock);
267
268 /* Reconnect the codec DAI back from the modem to the CPU DAI
269 * only if digital mute still off */
270 if (!muted)
271 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, 0);
272}
273
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000274/*
275 * Used for passing a codec structure pointer
276 * from the board initialization code to the tty line discipline.
277 */
278static struct snd_soc_codec *cx20442_codec;
279
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200280/* Line discipline .open() */
281static int cx81801_open(struct tty_struct *tty)
282{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000283 int ret;
284
285 if (!cx20442_codec)
286 return -ENODEV;
287
288 /*
289 * Pass the codec structure pointer for use by other ldisc callbacks,
290 * both the card and the codec specific parts.
291 */
292 tty->disc_data = cx20442_codec;
293
294 ret = v253_ops.open(tty);
295
296 if (ret < 0)
297 tty->disc_data = NULL;
298
299 return ret;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200300}
301
302/* Line discipline .close() */
303static void cx81801_close(struct tty_struct *tty)
304{
305 struct snd_soc_codec *codec = tty->disc_data;
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200306 struct snd_soc_dapm_context *dapm = &codec->dapm;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200307
308 del_timer_sync(&cx81801_timer);
309
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200310 /* Prevent the hook switch from further changing the DAPM pins */
311 INIT_LIST_HEAD(&ams_delta_hook_switch.pins);
312
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000313 if (!codec)
314 return;
315
316 v253_ops.close(tty);
317
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200318 /* Revert back to default audio input/output constellation */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200319 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
320 snd_soc_dapm_enable_pin(dapm, "Earpiece");
321 snd_soc_dapm_enable_pin(dapm, "Microphone");
322 snd_soc_dapm_disable_pin(dapm, "Speaker");
323 snd_soc_dapm_disable_pin(dapm, "AGCIN");
324 snd_soc_dapm_sync(dapm);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200325}
326
327/* Line discipline .hangup() */
328static int cx81801_hangup(struct tty_struct *tty)
329{
330 cx81801_close(tty);
331 return 0;
332}
333
Joe Perchesdbc62212011-06-23 11:39:19 -0700334/* Line discipline .receive_buf() */
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200335static void cx81801_receive(struct tty_struct *tty,
336 const unsigned char *cp, char *fp, int count)
337{
338 struct snd_soc_codec *codec = tty->disc_data;
339 const unsigned char *c;
340 int apply, ret;
341
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000342 if (!codec)
343 return;
344
345 if (!codec->hw_write) {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200346 /* First modem response, complete setup procedure */
347
348 /* Initialize timer used for config pulse generation */
349 setup_timer(&cx81801_timer, cx81801_timeout, 0);
350
351 v253_ops.receive_buf(tty, cp, fp, count);
352
353 /* Link hook switch to DAPM pins */
354 ret = snd_soc_jack_add_pins(&ams_delta_hook_switch,
355 ARRAY_SIZE(ams_delta_hook_switch_pins),
356 ams_delta_hook_switch_pins);
357 if (ret)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000358 dev_warn(codec->dev,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200359 "Failed to link hook switch to DAPM pins, "
360 "will continue with hook switch unlinked.\n");
361
362 return;
363 }
364
365 v253_ops.receive_buf(tty, cp, fp, count);
366
367 for (c = &cp[count - 1]; c >= cp; c--) {
368 if (*c != '\r')
369 continue;
370 /* Complete modem response received, apply config to codec */
371
372 spin_lock_bh(&ams_delta_lock);
373 mod_timer(&cx81801_timer, jiffies + msecs_to_jiffies(150));
374 apply = !ams_delta_muted && !cx81801_cmd_pending;
375 cx81801_cmd_pending = 1;
376 spin_unlock_bh(&ams_delta_lock);
377
378 /* Apply config pulse by connecting the codec to the modem
379 * if not already done */
380 if (apply)
381 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
382 AMS_DELTA_LATCH2_MODEM_CODEC);
383 break;
384 }
385}
386
387/* Line discipline .write_wakeup() */
388static void cx81801_wakeup(struct tty_struct *tty)
389{
390 v253_ops.write_wakeup(tty);
391}
392
393static struct tty_ldisc_ops cx81801_ops = {
394 .magic = TTY_LDISC_MAGIC,
395 .name = "cx81801",
396 .owner = THIS_MODULE,
397 .open = cx81801_open,
398 .close = cx81801_close,
399 .hangup = cx81801_hangup,
400 .receive_buf = cx81801_receive,
401 .write_wakeup = cx81801_wakeup,
402};
403
404
405/*
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300406 * Even if not very useful, the sound card can still work without any of the
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200407 * above functonality activated. You can still control its audio input/output
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300408 * constellation and speakerphone gain from userspace by issuing AT commands
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200409 * over the modem port.
410 */
411
412static int ams_delta_hw_params(struct snd_pcm_substream *substream,
413 struct snd_pcm_hw_params *params)
414{
415 struct snd_soc_pcm_runtime *rtd = substream->private_data;
416
417 /* Set cpu DAI configuration */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000418 return snd_soc_dai_set_fmt(rtd->cpu_dai,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200419 SND_SOC_DAIFMT_DSP_A |
420 SND_SOC_DAIFMT_NB_NF |
421 SND_SOC_DAIFMT_CBM_CFM);
422}
423
424static struct snd_soc_ops ams_delta_ops = {
425 .hw_params = ams_delta_hw_params,
426};
427
428
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200429/* Digital mute implemented using modem/CPU multiplexer.
430 * Shares hardware with codec config pulse generation */
431static bool ams_delta_muted = 1;
432
433static int ams_delta_digital_mute(struct snd_soc_dai *dai, int mute)
434{
435 int apply;
436
437 if (ams_delta_muted == mute)
438 return 0;
439
440 spin_lock_bh(&ams_delta_lock);
441 ams_delta_muted = mute;
442 apply = !cx81801_cmd_pending;
443 spin_unlock_bh(&ams_delta_lock);
444
445 if (apply)
446 ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
447 mute ? AMS_DELTA_LATCH2_MODEM_CODEC : 0);
448 return 0;
449}
450
451/* Our codec DAI probably doesn't have its own .ops structure */
Lars-Peter Clausen85e76522011-11-23 11:40:40 +0100452static const struct snd_soc_dai_ops ams_delta_dai_ops = {
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200453 .digital_mute = ams_delta_digital_mute,
454};
455
456/* Will be used if the codec ever has its own digital_mute function */
457static int ams_delta_startup(struct snd_pcm_substream *substream)
458{
459 return ams_delta_digital_mute(NULL, 0);
460}
461
462static void ams_delta_shutdown(struct snd_pcm_substream *substream)
463{
464 ams_delta_digital_mute(NULL, 1);
465}
466
467
468/*
469 * Card initialization
470 */
471
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000472static int ams_delta_cx20442_init(struct snd_soc_pcm_runtime *rtd)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200473{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000474 struct snd_soc_codec *codec = rtd->codec;
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200475 struct snd_soc_dapm_context *dapm = &codec->dapm;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000476 struct snd_soc_dai *codec_dai = rtd->codec_dai;
477 struct snd_soc_card *card = rtd->card;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200478 int ret;
479 /* Codec is ready, now add/activate board specific controls */
480
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000481 /* Store a pointer to the codec structure for tty ldisc use */
482 cx20442_codec = codec;
483
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200484 /* Set up digital mute if not provided by the codec */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000485 if (!codec_dai->driver->ops) {
486 codec_dai->driver->ops = &ams_delta_dai_ops;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200487 } else {
488 ams_delta_ops.startup = ams_delta_startup;
489 ams_delta_ops.shutdown = ams_delta_shutdown;
490 }
491
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200492 /* Add hook switch - can be used to control the codec from userspace
493 * even if line discipline fails */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000494 ret = snd_soc_jack_new(rtd->codec, "hook_switch",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200495 SND_JACK_HEADSET, &ams_delta_hook_switch);
496 if (ret)
497 dev_warn(card->dev,
498 "Failed to allocate resources for hook switch, "
499 "will continue without one.\n");
500 else {
501 ret = snd_soc_jack_add_gpios(&ams_delta_hook_switch,
502 ARRAY_SIZE(ams_delta_hook_switch_gpios),
503 ams_delta_hook_switch_gpios);
504 if (ret)
505 dev_warn(card->dev,
506 "Failed to set up hook switch GPIO line, "
507 "will continue with hook switch inactive.\n");
508 }
509
510 /* Register optional line discipline for over the modem control */
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200511 ret = tty_register_ldisc(N_V253, &cx81801_ops);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200512 if (ret) {
513 dev_warn(card->dev,
514 "Failed to register line discipline, "
515 "will continue without any controls.\n");
516 return 0;
517 }
518
519 /* Add board specific DAPM widgets and routes */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200520 ret = snd_soc_dapm_new_controls(dapm, ams_delta_dapm_widgets,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200521 ARRAY_SIZE(ams_delta_dapm_widgets));
522 if (ret) {
523 dev_warn(card->dev,
524 "Failed to register DAPM controls, "
525 "will continue without any.\n");
526 return 0;
527 }
528
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200529 ret = snd_soc_dapm_add_routes(dapm, ams_delta_audio_map,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200530 ARRAY_SIZE(ams_delta_audio_map));
531 if (ret) {
532 dev_warn(card->dev,
533 "Failed to set up DAPM routes, "
534 "will continue with codec default map.\n");
535 return 0;
536 }
537
538 /* Set up initial pin constellation */
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200539 snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
540 snd_soc_dapm_enable_pin(dapm, "Earpiece");
541 snd_soc_dapm_enable_pin(dapm, "Microphone");
542 snd_soc_dapm_disable_pin(dapm, "Speaker");
543 snd_soc_dapm_disable_pin(dapm, "AGCIN");
544 snd_soc_dapm_disable_pin(dapm, "AGCOUT");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200545
546 /* Add virtual switch */
Liam Girdwood022658b2012-02-03 17:43:09 +0000547 ret = snd_soc_add_codec_controls(codec, ams_delta_audio_controls,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200548 ARRAY_SIZE(ams_delta_audio_controls));
549 if (ret)
550 dev_warn(card->dev,
551 "Failed to register audio mode control, "
552 "will continue without it.\n");
553
554 return 0;
555}
556
557/* DAI glue - connects codec <--> CPU */
558static struct snd_soc_dai_link ams_delta_dai_link = {
559 .name = "CX20442",
560 .stream_name = "CX20442",
Peter Ujfalusi45656b42012-02-14 18:20:58 +0200561 .cpu_dai_name = "omap-mcbsp.1",
Janusz Krzysztofik53946372010-08-19 15:15:50 +0200562 .codec_dai_name = "cx20442-voice",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200563 .init = ams_delta_cx20442_init,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000564 .platform_name = "omap-pcm-audio",
565 .codec_name = "cx20442-codec",
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200566 .ops = &ams_delta_ops,
567};
568
569/* Audio card driver */
570static struct snd_soc_card ams_delta_audio_card = {
571 .name = "AMS_DELTA",
Axel Linb425b882011-12-22 11:08:59 +0800572 .owner = THIS_MODULE,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200573 .dai_link = &ams_delta_dai_link,
574 .num_links = 1,
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200575};
576
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200577/* Module init/exit */
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200578static __devinit int ams_delta_probe(struct platform_device *pdev)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200579{
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200580 struct snd_soc_card *card = &ams_delta_audio_card;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200581 int ret;
582
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200583 card->dev = &pdev->dev;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200584
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200585 ret = snd_soc_register_card(card);
586 if (ret) {
587 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
588 card->dev = NULL;
589 return ret;
590 }
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200591 return 0;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200592}
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200593
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200594static int __devexit ams_delta_remove(struct platform_device *pdev)
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200595{
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200596 struct snd_soc_card *card = platform_get_drvdata(pdev);
597
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200598 if (tty_unregister_ldisc(N_V253) != 0)
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200599 dev_warn(&pdev->dev,
Janusz Krzysztofikb7b8f9b2009-08-06 13:07:32 +0200600 "failed to unregister V253 line discipline\n");
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200601
602 snd_soc_jack_free_gpios(&ams_delta_hook_switch,
603 ARRAY_SIZE(ams_delta_hook_switch_gpios),
604 ams_delta_hook_switch_gpios);
605
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200606 snd_soc_unregister_card(card);
607 card->dev = NULL;
608 return 0;
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200609}
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200610
611#define DRV_NAME "ams-delta-audio"
612
613static struct platform_driver ams_delta_driver = {
614 .driver = {
615 .name = DRV_NAME,
616 .owner = THIS_MODULE,
617 },
618 .probe = ams_delta_probe,
619 .remove = __devexit_p(ams_delta_remove),
620};
621
622module_platform_driver(ams_delta_driver);
Janusz Krzysztofik6d7f68a2009-07-29 13:18:53 +0200623
624MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
625MODULE_DESCRIPTION("ALSA SoC driver for Amstrad E3 (Delta) videophone");
626MODULE_LICENSE("GPL");
Janusz Krzysztofikb764de22012-10-03 12:46:57 +0200627MODULE_ALIAS("platform:" DRV_NAME);