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6d7f68a1 JK |
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> | |
da155d5b | 28 | #include <linux/module.h> |
6d7f68a1 | 29 | |
ce6120cc | 30 | #include <sound/soc.h> |
6d7f68a1 JK |
31 | #include <sound/jack.h> |
32 | ||
33 | #include <asm/mach-types.h> | |
34 | ||
e27e35ec | 35 | #include <mach/board-ams-delta.h> |
2203747c | 36 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
6d7f68a1 JK |
37 | |
38 | #include "omap-mcbsp.h" | |
6d7f68a1 JK |
39 | #include "../codecs/cx20442.h" |
40 | ||
6d7f68a1 | 41 | /* Board specific DAPM widgets */ |
02624621 | 42 | static const struct snd_soc_dapm_widget ams_delta_dapm_widgets[] = { |
6d7f68a1 JK |
43 | /* 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 */ | |
52 | static 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 */ | |
65 | static 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 | ||
02624621 | 83 | static const unsigned short ams_delta_audio_mode_pins[] = { |
6d7f68a1 JK |
84 | AMS_DELTA_MIXED, |
85 | AMS_DELTA_HANDSET, | |
86 | AMS_DELTA_HANDSFREE, | |
87 | AMS_DELTA_SPEAKERPHONE, | |
88 | }; | |
89 | ||
90 | static unsigned short ams_delta_audio_agc; | |
91 | ||
74a16720 LPC |
92 | /* |
93 | * Used for passing a codec structure pointer | |
94 | * from the board initialization code to the tty line discipline. | |
95 | */ | |
96 | static struct snd_soc_codec *cx20442_codec; | |
97 | ||
6d7f68a1 JK |
98 | static int ams_delta_set_audio_mode(struct snd_kcontrol *kcontrol, |
99 | struct snd_ctl_elem_value *ucontrol) | |
100 | { | |
74a16720 LPC |
101 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
102 | struct snd_soc_dapm_context *dapm = &card->dapm; | |
6d7f68a1 JK |
103 | 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. */ | |
74a16720 | 108 | if (!cx20442_codec->hw_write) |
6d7f68a1 JK |
109 | return -EUNATCH; |
110 | ||
9a8d38db | 111 | if (ucontrol->value.enumerated.item[0] >= control->items) |
6d7f68a1 JK |
112 | return -EINVAL; |
113 | ||
03510ca0 | 114 | snd_soc_dapm_mutex_lock(dapm); |
6d7f68a1 JK |
115 | |
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)); | |
03510ca0 | 121 | |
ce6120cc | 122 | if (pin != snd_soc_dapm_get_pin_status(dapm, "Mouthpiece")) { |
6d7f68a1 JK |
123 | changed = 1; |
124 | if (pin) | |
03510ca0 | 125 | snd_soc_dapm_enable_pin_unlocked(dapm, "Mouthpiece"); |
6d7f68a1 | 126 | else |
03510ca0 | 127 | snd_soc_dapm_disable_pin_unlocked(dapm, "Mouthpiece"); |
6d7f68a1 JK |
128 | } |
129 | pin = !!(pins & (1 << AMS_DELTA_EARPIECE)); | |
ce6120cc | 130 | if (pin != snd_soc_dapm_get_pin_status(dapm, "Earpiece")) { |
6d7f68a1 JK |
131 | changed = 1; |
132 | if (pin) | |
03510ca0 | 133 | snd_soc_dapm_enable_pin_unlocked(dapm, "Earpiece"); |
6d7f68a1 | 134 | else |
03510ca0 | 135 | snd_soc_dapm_disable_pin_unlocked(dapm, "Earpiece"); |
6d7f68a1 JK |
136 | } |
137 | pin = !!(pins & (1 << AMS_DELTA_MICROPHONE)); | |
ce6120cc | 138 | if (pin != snd_soc_dapm_get_pin_status(dapm, "Microphone")) { |
6d7f68a1 JK |
139 | changed = 1; |
140 | if (pin) | |
03510ca0 | 141 | snd_soc_dapm_enable_pin_unlocked(dapm, "Microphone"); |
6d7f68a1 | 142 | else |
03510ca0 | 143 | snd_soc_dapm_disable_pin_unlocked(dapm, "Microphone"); |
6d7f68a1 JK |
144 | } |
145 | pin = !!(pins & (1 << AMS_DELTA_SPEAKER)); | |
ce6120cc | 146 | if (pin != snd_soc_dapm_get_pin_status(dapm, "Speaker")) { |
6d7f68a1 JK |
147 | changed = 1; |
148 | if (pin) | |
03510ca0 | 149 | snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker"); |
6d7f68a1 | 150 | else |
03510ca0 | 151 | snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker"); |
6d7f68a1 JK |
152 | } |
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) | |
03510ca0 | 158 | snd_soc_dapm_enable_pin_unlocked(dapm, "AGCIN"); |
6d7f68a1 | 159 | else |
03510ca0 | 160 | snd_soc_dapm_disable_pin_unlocked(dapm, "AGCIN"); |
6d7f68a1 | 161 | } |
03510ca0 | 162 | |
6d7f68a1 | 163 | if (changed) |
03510ca0 | 164 | snd_soc_dapm_sync_unlocked(dapm); |
6d7f68a1 | 165 | |
03510ca0 | 166 | snd_soc_dapm_mutex_unlock(dapm); |
6d7f68a1 JK |
167 | |
168 | return changed; | |
169 | } | |
170 | ||
171 | static int ams_delta_get_audio_mode(struct snd_kcontrol *kcontrol, | |
172 | struct snd_ctl_elem_value *ucontrol) | |
173 | { | |
74a16720 LPC |
174 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
175 | struct snd_soc_dapm_context *dapm = &card->dapm; | |
6d7f68a1 JK |
176 | unsigned short pins, mode; |
177 | ||
ce6120cc | 178 | pins = ((snd_soc_dapm_get_pin_status(dapm, "Mouthpiece") << |
6d7f68a1 | 179 | AMS_DELTA_MOUTHPIECE) | |
ce6120cc | 180 | (snd_soc_dapm_get_pin_status(dapm, "Earpiece") << |
6d7f68a1 JK |
181 | AMS_DELTA_EARPIECE)); |
182 | if (pins) | |
ce6120cc | 183 | pins |= (snd_soc_dapm_get_pin_status(dapm, "Microphone") << |
6d7f68a1 JK |
184 | AMS_DELTA_MICROPHONE); |
185 | else | |
ce6120cc | 186 | pins = ((snd_soc_dapm_get_pin_status(dapm, "Microphone") << |
6d7f68a1 | 187 | AMS_DELTA_MICROPHONE) | |
ce6120cc | 188 | (snd_soc_dapm_get_pin_status(dapm, "Speaker") << |
6d7f68a1 JK |
189 | 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 | ||
7cb5e1bb TI |
204 | static const SOC_ENUM_SINGLE_EXT_DECL(ams_delta_audio_enum, |
205 | ams_delta_audio_mode); | |
6d7f68a1 JK |
206 | |
207 | static const struct snd_kcontrol_new ams_delta_audio_controls[] = { | |
7cb5e1bb | 208 | SOC_ENUM_EXT("Audio Mode", ams_delta_audio_enum, |
6d7f68a1 JK |
209 | ams_delta_get_audio_mode, ams_delta_set_audio_mode), |
210 | }; | |
211 | ||
212 | /* Hook switch */ | |
213 | static struct snd_soc_jack ams_delta_hook_switch; | |
214 | static 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. */ | |
226 | static 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, | |
25985edc | 256 | * we must connect codec DAI pins to the modem for a moment. Be careful not |
6d7f68a1 JK |
257 | * to interfere with our digital mute function that shares the same hardware. */ |
258 | static struct timer_list cx81801_timer; | |
259 | static bool cx81801_cmd_pending; | |
260 | static bool ams_delta_muted; | |
261 | static DEFINE_SPINLOCK(ams_delta_lock); | |
262 | ||
263 | static 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() */ | |
279 | static int cx81801_open(struct tty_struct *tty) | |
280 | { | |
f0fba2ad LG |
281 | 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; | |
6d7f68a1 JK |
298 | } |
299 | ||
300 | /* Line discipline .close() */ | |
301 | static void cx81801_close(struct tty_struct *tty) | |
302 | { | |
303 | struct snd_soc_codec *codec = tty->disc_data; | |
00200107 | 304 | struct snd_soc_dapm_context *dapm = &codec->component.card->dapm; |
6d7f68a1 JK |
305 | |
306 | del_timer_sync(&cx81801_timer); | |
307 | ||
6d7f68a1 JK |
308 | /* Prevent the hook switch from further changing the DAPM pins */ |
309 | INIT_LIST_HEAD(&ams_delta_hook_switch.pins); | |
310 | ||
f0fba2ad LG |
311 | if (!codec) |
312 | return; | |
313 | ||
314 | v253_ops.close(tty); | |
315 | ||
6d7f68a1 | 316 | /* Revert back to default audio input/output constellation */ |
03510ca0 CK |
317 | 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 | ||
e95d73c4 | 327 | snd_soc_dapm_mutex_unlock(dapm); |
6d7f68a1 JK |
328 | } |
329 | ||
330 | /* Line discipline .hangup() */ | |
331 | static int cx81801_hangup(struct tty_struct *tty) | |
332 | { | |
333 | cx81801_close(tty); | |
334 | return 0; | |
335 | } | |
336 | ||
dbc6221b | 337 | /* Line discipline .receive_buf() */ |
6d7f68a1 JK |
338 | static 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 | ||
f0fba2ad LG |
345 | if (!codec) |
346 | return; | |
347 | ||
348 | if (!codec->hw_write) { | |
6d7f68a1 JK |
349 | /* 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) | |
f0fba2ad | 361 | dev_warn(codec->dev, |
6d7f68a1 JK |
362 | "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() */ | |
391 | static void cx81801_wakeup(struct tty_struct *tty) | |
392 | { | |
393 | v253_ops.write_wakeup(tty); | |
394 | } | |
395 | ||
396 | static 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 | /* | |
25985edc | 409 | * Even if not very useful, the sound card can still work without any of the |
6d7f68a1 | 410 | * above functonality activated. You can still control its audio input/output |
25985edc | 411 | * constellation and speakerphone gain from userspace by issuing AT commands |
6d7f68a1 JK |
412 | * over the modem port. |
413 | */ | |
414 | ||
415 | static 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 */ | |
f0fba2ad | 421 | return snd_soc_dai_set_fmt(rtd->cpu_dai, |
6d7f68a1 JK |
422 | SND_SOC_DAIFMT_DSP_A | |
423 | SND_SOC_DAIFMT_NB_NF | | |
424 | SND_SOC_DAIFMT_CBM_CFM); | |
425 | } | |
426 | ||
427 | static struct snd_soc_ops ams_delta_ops = { | |
428 | .hw_params = ams_delta_hw_params, | |
429 | }; | |
430 | ||
431 | ||
6d7f68a1 JK |
432 | /* Digital mute implemented using modem/CPU multiplexer. |
433 | * Shares hardware with codec config pulse generation */ | |
434 | static bool ams_delta_muted = 1; | |
435 | ||
436 | static 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 */ | |
85e7652d | 455 | static const struct snd_soc_dai_ops ams_delta_dai_ops = { |
6d7f68a1 JK |
456 | .digital_mute = ams_delta_digital_mute, |
457 | }; | |
458 | ||
459 | /* Will be used if the codec ever has its own digital_mute function */ | |
460 | static int ams_delta_startup(struct snd_pcm_substream *substream) | |
461 | { | |
462 | return ams_delta_digital_mute(NULL, 0); | |
463 | } | |
464 | ||
465 | static 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 | ||
f0fba2ad | 475 | static int ams_delta_cx20442_init(struct snd_soc_pcm_runtime *rtd) |
6d7f68a1 | 476 | { |
f0fba2ad LG |
477 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
478 | struct snd_soc_card *card = rtd->card; | |
74a16720 | 479 | struct snd_soc_dapm_context *dapm = &card->dapm; |
6d7f68a1 JK |
480 | int ret; |
481 | /* Codec is ready, now add/activate board specific controls */ | |
482 | ||
f0fba2ad | 483 | /* Store a pointer to the codec structure for tty ldisc use */ |
74a16720 | 484 | cx20442_codec = rtd->codec; |
f0fba2ad | 485 | |
6d7f68a1 | 486 | /* Set up digital mute if not provided by the codec */ |
f0fba2ad LG |
487 | if (!codec_dai->driver->ops) { |
488 | codec_dai->driver->ops = &ams_delta_dai_ops; | |
6d7f68a1 JK |
489 | } else { |
490 | ams_delta_ops.startup = ams_delta_startup; | |
491 | ams_delta_ops.shutdown = ams_delta_shutdown; | |
492 | } | |
493 | ||
6d7f68a1 JK |
494 | /* Add hook switch - can be used to control the codec from userspace |
495 | * even if line discipline fails */ | |
f0fba2ad | 496 | ret = snd_soc_jack_new(rtd->codec, "hook_switch", |
6d7f68a1 JK |
497 | 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 */ | |
b7b8f9bf | 513 | ret = tty_register_ldisc(N_V253, &cx81801_ops); |
6d7f68a1 JK |
514 | 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 | ||
6d7f68a1 | 521 | /* Set up initial pin constellation */ |
ce6120cc | 522 | snd_soc_dapm_disable_pin(dapm, "Mouthpiece"); |
ce6120cc LG |
523 | snd_soc_dapm_disable_pin(dapm, "Speaker"); |
524 | snd_soc_dapm_disable_pin(dapm, "AGCIN"); | |
525 | snd_soc_dapm_disable_pin(dapm, "AGCOUT"); | |
6d7f68a1 | 526 | |
6d7f68a1 JK |
527 | return 0; |
528 | } | |
529 | ||
16088cb6 | 530 | static int ams_delta_card_remove(struct snd_soc_card *card) |
e1d4d3c8 SW |
531 | { |
532 | snd_soc_jack_free_gpios(&ams_delta_hook_switch, | |
533 | ARRAY_SIZE(ams_delta_hook_switch_gpios), | |
534 | ams_delta_hook_switch_gpios); | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
6d7f68a1 JK |
539 | /* DAI glue - connects codec <--> CPU */ |
540 | static struct snd_soc_dai_link ams_delta_dai_link = { | |
541 | .name = "CX20442", | |
542 | .stream_name = "CX20442", | |
45656b44 | 543 | .cpu_dai_name = "omap-mcbsp.1", |
5394637a | 544 | .codec_dai_name = "cx20442-voice", |
6d7f68a1 | 545 | .init = ams_delta_cx20442_init, |
a25f478f | 546 | .platform_name = "omap-mcbsp.1", |
f0fba2ad | 547 | .codec_name = "cx20442-codec", |
6d7f68a1 JK |
548 | .ops = &ams_delta_ops, |
549 | }; | |
550 | ||
551 | /* Audio card driver */ | |
552 | static struct snd_soc_card ams_delta_audio_card = { | |
553 | .name = "AMS_DELTA", | |
b425b884 | 554 | .owner = THIS_MODULE, |
e1d4d3c8 | 555 | .remove = ams_delta_card_remove, |
6d7f68a1 JK |
556 | .dai_link = &ams_delta_dai_link, |
557 | .num_links = 1, | |
74a16720 LPC |
558 | |
559 | .controls = ams_delta_audio_controls, | |
560 | .num_controls = ARRAY_SIZE(ams_delta_audio_controls), | |
561 | .dapm_widgets = ams_delta_dapm_widgets, | |
562 | .num_dapm_widgets = ARRAY_SIZE(ams_delta_dapm_widgets), | |
563 | .dapm_routes = ams_delta_audio_map, | |
564 | .num_dapm_routes = ARRAY_SIZE(ams_delta_audio_map), | |
6d7f68a1 JK |
565 | }; |
566 | ||
6d7f68a1 | 567 | /* Module init/exit */ |
7ff60006 | 568 | static int ams_delta_probe(struct platform_device *pdev) |
6d7f68a1 | 569 | { |
b764de2d | 570 | struct snd_soc_card *card = &ams_delta_audio_card; |
6d7f68a1 JK |
571 | int ret; |
572 | ||
b764de2d | 573 | card->dev = &pdev->dev; |
6d7f68a1 | 574 | |
b764de2d JK |
575 | ret = snd_soc_register_card(card); |
576 | if (ret) { | |
577 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); | |
578 | card->dev = NULL; | |
579 | return ret; | |
580 | } | |
6d7f68a1 | 581 | return 0; |
6d7f68a1 | 582 | } |
6d7f68a1 | 583 | |
7ff60006 | 584 | static int ams_delta_remove(struct platform_device *pdev) |
6d7f68a1 | 585 | { |
b764de2d JK |
586 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
587 | ||
b7b8f9bf | 588 | if (tty_unregister_ldisc(N_V253) != 0) |
b764de2d | 589 | dev_warn(&pdev->dev, |
b7b8f9bf | 590 | "failed to unregister V253 line discipline\n"); |
6d7f68a1 | 591 | |
b764de2d JK |
592 | snd_soc_unregister_card(card); |
593 | card->dev = NULL; | |
594 | return 0; | |
6d7f68a1 | 595 | } |
b764de2d JK |
596 | |
597 | #define DRV_NAME "ams-delta-audio" | |
598 | ||
599 | static struct platform_driver ams_delta_driver = { | |
600 | .driver = { | |
601 | .name = DRV_NAME, | |
602 | .owner = THIS_MODULE, | |
603 | }, | |
604 | .probe = ams_delta_probe, | |
7ff60006 | 605 | .remove = ams_delta_remove, |
b764de2d JK |
606 | }; |
607 | ||
608 | module_platform_driver(ams_delta_driver); | |
6d7f68a1 JK |
609 | |
610 | MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>"); | |
611 | MODULE_DESCRIPTION("ALSA SoC driver for Amstrad E3 (Delta) videophone"); | |
612 | MODULE_LICENSE("GPL"); | |
b764de2d | 613 | MODULE_ALIAS("platform:" DRV_NAME); |