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8a2cd618 MB |
1 | /* |
2 | * soc-jack.c -- ALSA SoC jack handling | |
3 | * | |
4 | * Copyright 2008 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | */ | |
13 | ||
14 | #include <sound/jack.h> | |
15 | #include <sound/soc.h> | |
ec67624d | 16 | #include <linux/gpio.h> |
50dfb69d | 17 | #include <linux/gpio/consumer.h> |
ec67624d LCM |
18 | #include <linux/interrupt.h> |
19 | #include <linux/workqueue.h> | |
20 | #include <linux/delay.h> | |
d81a6d71 | 21 | #include <linux/export.h> |
73548dd3 | 22 | #include <linux/suspend.h> |
3028eb8c | 23 | #include <trace/events/asoc.h> |
8a2cd618 | 24 | |
bd29ae96 TI |
25 | struct jack_gpio_tbl { |
26 | int count; | |
27 | struct snd_soc_jack *jack; | |
28 | struct snd_soc_jack_gpio *gpios; | |
29 | }; | |
30 | ||
d7344010 BL |
31 | /** |
32 | * snd_soc_codec_set_jack - configure codec jack. | |
33 | * @codec: CODEC | |
34 | * @jack: structure to use for the jack | |
35 | * @data: can be used if codec driver need extra data for configuring jack | |
36 | * | |
37 | * Configures and enables jack detection function. | |
38 | */ | |
39 | int snd_soc_codec_set_jack(struct snd_soc_codec *codec, | |
40 | struct snd_soc_jack *jack, void *data) | |
41 | { | |
42 | if (codec->driver->set_jack) | |
43 | return codec->driver->set_jack(codec, jack, data); | |
44 | else | |
77a4525b | 45 | return -ENOTSUPP; |
d7344010 BL |
46 | } |
47 | EXPORT_SYMBOL_GPL(snd_soc_codec_set_jack); | |
48 | ||
44c07365 KM |
49 | /** |
50 | * snd_soc_component_set_jack - configure component jack. | |
51 | * @component: COMPONENTs | |
52 | * @jack: structure to use for the jack | |
53 | * @data: can be used if codec driver need extra data for configuring jack | |
54 | * | |
55 | * Configures and enables jack detection function. | |
56 | */ | |
57 | int snd_soc_component_set_jack(struct snd_soc_component *component, | |
58 | struct snd_soc_jack *jack, void *data) | |
59 | { | |
60 | /* will be removed */ | |
61 | if (component->set_jack) | |
62 | return component->set_jack(component, jack, data); | |
63 | ||
64 | if (component->driver->set_jack) | |
65 | return component->driver->set_jack(component, jack, data); | |
66 | ||
67 | return -ENOTSUPP; | |
68 | } | |
69 | EXPORT_SYMBOL_GPL(snd_soc_component_set_jack); | |
70 | ||
8a2cd618 | 71 | /** |
97093996 LPC |
72 | * snd_soc_card_jack_new - Create a new jack |
73 | * @card: ASoC card | |
8a2cd618 MB |
74 | * @id: an identifying string for this jack |
75 | * @type: a bitmask of enum snd_jack_type values that can be detected by | |
76 | * this jack | |
77 | * @jack: structure to use for the jack | |
97093996 LPC |
78 | * @pins: Array of jack pins to be added to the jack or NULL |
79 | * @num_pins: Number of elements in the @pins array | |
8a2cd618 MB |
80 | * |
81 | * Creates a new jack object. | |
82 | * | |
83 | * Returns zero if successful, or a negative error code on failure. | |
84 | * On success jack will be initialised. | |
85 | */ | |
97093996 LPC |
86 | int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type, |
87 | struct snd_soc_jack *jack, struct snd_soc_jack_pin *pins, | |
88 | unsigned int num_pins) | |
8a2cd618 | 89 | { |
97093996 LPC |
90 | int ret; |
91 | ||
2667b4b8 | 92 | mutex_init(&jack->mutex); |
97093996 | 93 | jack->card = card; |
8a2cd618 | 94 | INIT_LIST_HEAD(&jack->pins); |
fa9879ed | 95 | INIT_LIST_HEAD(&jack->jack_zones); |
d5021ec9 | 96 | BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier); |
8a2cd618 | 97 | |
4e3f0dc6 | 98 | ret = snd_jack_new(card->snd_card, id, type, &jack->jack, false, false); |
97093996 LPC |
99 | if (ret) |
100 | return ret; | |
101 | ||
102 | if (num_pins) | |
103 | return snd_soc_jack_add_pins(jack, num_pins, pins); | |
104 | ||
105 | return 0; | |
8a2cd618 | 106 | } |
97093996 | 107 | EXPORT_SYMBOL_GPL(snd_soc_card_jack_new); |
8a2cd618 MB |
108 | |
109 | /** | |
110 | * snd_soc_jack_report - Report the current status for a jack | |
111 | * | |
112 | * @jack: the jack | |
113 | * @status: a bitmask of enum snd_jack_type values that are currently detected. | |
114 | * @mask: a bitmask of enum snd_jack_type values that being reported. | |
115 | * | |
116 | * If configured using snd_soc_jack_add_pins() then the associated | |
117 | * DAPM pins will be enabled or disabled as appropriate and DAPM | |
118 | * synchronised. | |
119 | * | |
120 | * Note: This function uses mutexes and should be called from a | |
121 | * context which can sleep (such as a workqueue). | |
122 | */ | |
123 | void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) | |
124 | { | |
ce6120cc | 125 | struct snd_soc_dapm_context *dapm; |
8a2cd618 | 126 | struct snd_soc_jack_pin *pin; |
30a765d6 | 127 | unsigned int sync = 0; |
8a2cd618 | 128 | int enable; |
8a2cd618 | 129 | |
3028eb8c MB |
130 | trace_snd_soc_jack_report(jack, mask, status); |
131 | ||
3a278a0c | 132 | if (!jack) |
8a2cd618 | 133 | return; |
3a278a0c | 134 | |
97093996 | 135 | dapm = &jack->card->dapm; |
8a2cd618 | 136 | |
2667b4b8 | 137 | mutex_lock(&jack->mutex); |
8a2cd618 | 138 | |
8a2cd618 | 139 | jack->status &= ~mask; |
178b699c | 140 | jack->status |= status & mask; |
8a2cd618 | 141 | |
3028eb8c MB |
142 | trace_snd_soc_jack_notify(jack, status); |
143 | ||
8a2cd618 | 144 | list_for_each_entry(pin, &jack->pins, list) { |
178b699c | 145 | enable = pin->mask & jack->status; |
8a2cd618 MB |
146 | |
147 | if (pin->invert) | |
148 | enable = !enable; | |
149 | ||
150 | if (enable) | |
ce6120cc | 151 | snd_soc_dapm_enable_pin(dapm, pin->pin); |
8a2cd618 | 152 | else |
ce6120cc | 153 | snd_soc_dapm_disable_pin(dapm, pin->pin); |
30a765d6 VK |
154 | |
155 | /* we need to sync for this case only */ | |
156 | sync = 1; | |
8a2cd618 MB |
157 | } |
158 | ||
d5021ec9 | 159 | /* Report before the DAPM sync to help users updating micbias status */ |
12022a78 | 160 | blocking_notifier_call_chain(&jack->notifier, jack->status, jack); |
d5021ec9 | 161 | |
30a765d6 VK |
162 | if (sync) |
163 | snd_soc_dapm_sync(dapm); | |
8a2cd618 | 164 | |
747da0f8 | 165 | snd_jack_report(jack->jack, jack->status); |
8a2cd618 | 166 | |
2667b4b8 | 167 | mutex_unlock(&jack->mutex); |
8a2cd618 MB |
168 | } |
169 | EXPORT_SYMBOL_GPL(snd_soc_jack_report); | |
170 | ||
fa9879ed VK |
171 | /** |
172 | * snd_soc_jack_add_zones - Associate voltage zones with jack | |
173 | * | |
174 | * @jack: ASoC jack | |
175 | * @count: Number of zones | |
bb29a93b | 176 | * @zones: Array of zones |
fa9879ed VK |
177 | * |
178 | * After this function has been called the zones specified in the | |
179 | * array will be associated with the jack. | |
180 | */ | |
181 | int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count, | |
182 | struct snd_soc_jack_zone *zones) | |
183 | { | |
184 | int i; | |
185 | ||
186 | for (i = 0; i < count; i++) { | |
187 | INIT_LIST_HEAD(&zones[i].list); | |
188 | list_add(&(zones[i].list), &jack->jack_zones); | |
189 | } | |
190 | return 0; | |
191 | } | |
192 | EXPORT_SYMBOL_GPL(snd_soc_jack_add_zones); | |
193 | ||
194 | /** | |
195 | * snd_soc_jack_get_type - Based on the mic bias value, this function returns | |
a92b078e | 196 | * the type of jack from the zones declared in the jack type |
fa9879ed | 197 | * |
a92b078e | 198 | * @jack: ASoC jack |
fa9879ed VK |
199 | * @micbias_voltage: mic bias voltage at adc channel when jack is plugged in |
200 | * | |
201 | * Based on the mic bias value passed, this function helps identify | |
a92b078e | 202 | * the type of jack from the already declared jack zones |
fa9879ed VK |
203 | */ |
204 | int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage) | |
205 | { | |
206 | struct snd_soc_jack_zone *zone; | |
207 | ||
208 | list_for_each_entry(zone, &jack->jack_zones, list) { | |
209 | if (micbias_voltage >= zone->min_mv && | |
210 | micbias_voltage < zone->max_mv) | |
211 | return zone->jack_type; | |
212 | } | |
213 | return 0; | |
214 | } | |
215 | EXPORT_SYMBOL_GPL(snd_soc_jack_get_type); | |
216 | ||
8a2cd618 MB |
217 | /** |
218 | * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack | |
219 | * | |
220 | * @jack: ASoC jack | |
221 | * @count: Number of pins | |
222 | * @pins: Array of pins | |
223 | * | |
224 | * After this function has been called the DAPM pins specified in the | |
225 | * pins array will have their status updated to reflect the current | |
226 | * state of the jack whenever the jack status is updated. | |
227 | */ | |
228 | int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, | |
229 | struct snd_soc_jack_pin *pins) | |
230 | { | |
231 | int i; | |
232 | ||
233 | for (i = 0; i < count; i++) { | |
234 | if (!pins[i].pin) { | |
97093996 | 235 | dev_err(jack->card->dev, "ASoC: No name for pin %d\n", |
008d55e2 | 236 | i); |
8a2cd618 MB |
237 | return -EINVAL; |
238 | } | |
239 | if (!pins[i].mask) { | |
97093996 | 240 | dev_err(jack->card->dev, "ASoC: No mask for pin %d" |
008d55e2 | 241 | " (%s)\n", i, pins[i].pin); |
8a2cd618 MB |
242 | return -EINVAL; |
243 | } | |
244 | ||
245 | INIT_LIST_HEAD(&pins[i].list); | |
246 | list_add(&(pins[i].list), &jack->pins); | |
f63e8581 | 247 | snd_jack_add_new_kctl(jack->jack, pins[i].pin, pins[i].mask); |
8a2cd618 MB |
248 | } |
249 | ||
250 | /* Update to reflect the last reported status; canned jack | |
251 | * implementations are likely to set their state before the | |
252 | * card has an opportunity to associate pins. | |
253 | */ | |
254 | snd_soc_jack_report(jack, 0, 0); | |
255 | ||
256 | return 0; | |
257 | } | |
258 | EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins); | |
ec67624d | 259 | |
d5021ec9 MB |
260 | /** |
261 | * snd_soc_jack_notifier_register - Register a notifier for jack status | |
262 | * | |
263 | * @jack: ASoC jack | |
264 | * @nb: Notifier block to register | |
265 | * | |
266 | * Register for notification of the current status of the jack. Note | |
267 | * that it is not possible to report additional jack events in the | |
268 | * callback from the notifier, this is intended to support | |
269 | * applications such as enabling electrical detection only when a | |
270 | * mechanical detection event has occurred. | |
271 | */ | |
272 | void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, | |
273 | struct notifier_block *nb) | |
274 | { | |
275 | blocking_notifier_chain_register(&jack->notifier, nb); | |
276 | } | |
277 | EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_register); | |
278 | ||
279 | /** | |
280 | * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status | |
281 | * | |
282 | * @jack: ASoC jack | |
283 | * @nb: Notifier block to unregister | |
284 | * | |
285 | * Stop notifying for status changes. | |
286 | */ | |
287 | void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, | |
288 | struct notifier_block *nb) | |
289 | { | |
290 | blocking_notifier_chain_unregister(&jack->notifier, nb); | |
291 | } | |
292 | EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_unregister); | |
293 | ||
ec67624d LCM |
294 | #ifdef CONFIG_GPIOLIB |
295 | /* gpio detect */ | |
26bd7b49 | 296 | static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio) |
ec67624d LCM |
297 | { |
298 | struct snd_soc_jack *jack = gpio->jack; | |
299 | int enable; | |
300 | int report; | |
301 | ||
50dfb69d | 302 | enable = gpiod_get_value_cansleep(gpio->desc); |
ec67624d LCM |
303 | if (gpio->invert) |
304 | enable = !enable; | |
305 | ||
306 | if (enable) | |
307 | report = gpio->report; | |
308 | else | |
309 | report = 0; | |
310 | ||
c871a053 | 311 | if (gpio->jack_status_check) |
cb29d7b9 | 312 | report = gpio->jack_status_check(gpio->data); |
c871a053 | 313 | |
ec67624d LCM |
314 | snd_soc_jack_report(jack, report, gpio->report); |
315 | } | |
316 | ||
317 | /* irq handler for gpio pin */ | |
318 | static irqreturn_t gpio_handler(int irq, void *data) | |
319 | { | |
320 | struct snd_soc_jack_gpio *gpio = data; | |
97093996 | 321 | struct device *dev = gpio->jack->card->dev; |
f9a67059 | 322 | |
3028eb8c MB |
323 | trace_snd_soc_jack_irq(gpio->name); |
324 | ||
f9a67059 MB |
325 | if (device_may_wakeup(dev)) |
326 | pm_wakeup_event(dev, gpio->debounce_time + 50); | |
ec67624d | 327 | |
e6058aaa | 328 | queue_delayed_work(system_power_efficient_wq, &gpio->work, |
4c14d78e | 329 | msecs_to_jiffies(gpio->debounce_time)); |
ec67624d LCM |
330 | |
331 | return IRQ_HANDLED; | |
332 | } | |
333 | ||
334 | /* gpio work */ | |
335 | static void gpio_work(struct work_struct *work) | |
336 | { | |
337 | struct snd_soc_jack_gpio *gpio; | |
338 | ||
4c14d78e | 339 | gpio = container_of(work, struct snd_soc_jack_gpio, work.work); |
ec67624d LCM |
340 | snd_soc_jack_gpio_detect(gpio); |
341 | } | |
342 | ||
73548dd3 DT |
343 | static int snd_soc_jack_pm_notifier(struct notifier_block *nb, |
344 | unsigned long action, void *data) | |
345 | { | |
346 | struct snd_soc_jack_gpio *gpio = | |
347 | container_of(nb, struct snd_soc_jack_gpio, pm_notifier); | |
348 | ||
349 | switch (action) { | |
350 | case PM_POST_SUSPEND: | |
351 | case PM_POST_HIBERNATION: | |
352 | case PM_POST_RESTORE: | |
353 | /* | |
354 | * Use workqueue so we do not have to care about running | |
355 | * concurrently with work triggered by the interrupt handler. | |
356 | */ | |
357 | queue_delayed_work(system_power_efficient_wq, &gpio->work, 0); | |
358 | break; | |
359 | } | |
360 | ||
361 | return NOTIFY_DONE; | |
362 | } | |
363 | ||
bd29ae96 TI |
364 | static void jack_free_gpios(struct snd_soc_jack *jack, int count, |
365 | struct snd_soc_jack_gpio *gpios) | |
366 | { | |
367 | int i; | |
368 | ||
369 | for (i = 0; i < count; i++) { | |
370 | gpiod_unexport(gpios[i].desc); | |
371 | unregister_pm_notifier(&gpios[i].pm_notifier); | |
372 | free_irq(gpiod_to_irq(gpios[i].desc), &gpios[i]); | |
373 | cancel_delayed_work_sync(&gpios[i].work); | |
374 | gpiod_put(gpios[i].desc); | |
375 | gpios[i].jack = NULL; | |
376 | } | |
377 | } | |
378 | ||
379 | static void jack_devres_free_gpios(struct device *dev, void *res) | |
380 | { | |
381 | struct jack_gpio_tbl *tbl = res; | |
382 | ||
383 | jack_free_gpios(tbl->jack, tbl->count, tbl->gpios); | |
384 | } | |
385 | ||
ec67624d LCM |
386 | /** |
387 | * snd_soc_jack_add_gpios - Associate GPIO pins with an ASoC jack | |
388 | * | |
389 | * @jack: ASoC jack | |
390 | * @count: number of pins | |
391 | * @gpios: array of gpio pins | |
392 | * | |
393 | * This function will request gpio, set data direction and request irq | |
394 | * for each gpio in the array. | |
395 | */ | |
396 | int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, | |
397 | struct snd_soc_jack_gpio *gpios) | |
398 | { | |
399 | int i, ret; | |
bd29ae96 TI |
400 | struct jack_gpio_tbl *tbl; |
401 | ||
402 | tbl = devres_alloc(jack_devres_free_gpios, sizeof(*tbl), GFP_KERNEL); | |
403 | if (!tbl) | |
404 | return -ENOMEM; | |
405 | tbl->jack = jack; | |
406 | tbl->count = count; | |
407 | tbl->gpios = gpios; | |
ec67624d LCM |
408 | |
409 | for (i = 0; i < count; i++) { | |
ec67624d | 410 | if (!gpios[i].name) { |
97093996 | 411 | dev_err(jack->card->dev, |
f025d3b9 | 412 | "ASoC: No name for gpio at index %d\n", i); |
ec67624d LCM |
413 | ret = -EINVAL; |
414 | goto undo; | |
415 | } | |
416 | ||
e616d2eb DR |
417 | if (gpios[i].desc) { |
418 | /* Already have a GPIO descriptor. */ | |
419 | goto got_gpio; | |
420 | } else if (gpios[i].gpiod_dev) { | |
421 | /* Get a GPIO descriptor */ | |
f025d3b9 JN |
422 | gpios[i].desc = gpiod_get_index(gpios[i].gpiod_dev, |
423 | gpios[i].name, | |
00d647b0 | 424 | gpios[i].idx, GPIOD_IN); |
f025d3b9 JN |
425 | if (IS_ERR(gpios[i].desc)) { |
426 | ret = PTR_ERR(gpios[i].desc); | |
427 | dev_err(gpios[i].gpiod_dev, | |
428 | "ASoC: Cannot get gpio at index %d: %d", | |
429 | i, ret); | |
430 | goto undo; | |
431 | } | |
432 | } else { | |
433 | /* legacy GPIO number */ | |
434 | if (!gpio_is_valid(gpios[i].gpio)) { | |
97093996 | 435 | dev_err(jack->card->dev, |
f025d3b9 JN |
436 | "ASoC: Invalid gpio %d\n", |
437 | gpios[i].gpio); | |
438 | ret = -EINVAL; | |
439 | goto undo; | |
440 | } | |
441 | ||
00d647b0 AC |
442 | ret = gpio_request_one(gpios[i].gpio, GPIOF_IN, |
443 | gpios[i].name); | |
f025d3b9 JN |
444 | if (ret) |
445 | goto undo; | |
446 | ||
447 | gpios[i].desc = gpio_to_desc(gpios[i].gpio); | |
448 | } | |
e616d2eb | 449 | got_gpio: |
4c14d78e | 450 | INIT_DELAYED_WORK(&gpios[i].work, gpio_work); |
b8e22c1f LPC |
451 | gpios[i].jack = jack; |
452 | ||
50dfb69d | 453 | ret = request_any_context_irq(gpiod_to_irq(gpios[i].desc), |
3f58fd84 MB |
454 | gpio_handler, |
455 | IRQF_TRIGGER_RISING | | |
456 | IRQF_TRIGGER_FALLING, | |
363618f0 | 457 | gpios[i].name, |
3f58fd84 | 458 | &gpios[i]); |
d2b4c7bd | 459 | if (ret < 0) |
ec67624d LCM |
460 | goto err; |
461 | ||
7887ab3a | 462 | if (gpios[i].wake) { |
50dfb69d | 463 | ret = irq_set_irq_wake(gpiod_to_irq(gpios[i].desc), 1); |
7887ab3a | 464 | if (ret != 0) |
97093996 | 465 | dev_err(jack->card->dev, |
f025d3b9 JN |
466 | "ASoC: Failed to mark GPIO at index %d as wake source: %d\n", |
467 | i, ret); | |
7887ab3a MB |
468 | } |
469 | ||
73548dd3 DT |
470 | /* |
471 | * Register PM notifier so we do not miss state transitions | |
472 | * happening while system is asleep. | |
473 | */ | |
474 | gpios[i].pm_notifier.notifier_call = snd_soc_jack_pm_notifier; | |
475 | register_pm_notifier(&gpios[i].pm_notifier); | |
476 | ||
178b699c | 477 | /* Expose GPIO value over sysfs for diagnostic purposes */ |
50dfb69d | 478 | gpiod_export(gpios[i].desc, false); |
178b699c | 479 | |
178b699c | 480 | /* Update initial jack status */ |
f1adf5be | 481 | schedule_delayed_work(&gpios[i].work, |
482 | msecs_to_jiffies(gpios[i].debounce_time)); | |
ec67624d LCM |
483 | } |
484 | ||
bd29ae96 | 485 | devres_add(jack->card->dev, tbl); |
ec67624d LCM |
486 | return 0; |
487 | ||
488 | err: | |
489 | gpio_free(gpios[i].gpio); | |
490 | undo: | |
bd29ae96 TI |
491 | jack_free_gpios(jack, i, gpios); |
492 | devres_free(tbl); | |
ec67624d LCM |
493 | |
494 | return ret; | |
495 | } | |
496 | EXPORT_SYMBOL_GPL(snd_soc_jack_add_gpios); | |
497 | ||
f025d3b9 JN |
498 | /** |
499 | * snd_soc_jack_add_gpiods - Associate GPIO descriptor pins with an ASoC jack | |
500 | * | |
501 | * @gpiod_dev: GPIO consumer device | |
502 | * @jack: ASoC jack | |
503 | * @count: number of pins | |
504 | * @gpios: array of gpio pins | |
505 | * | |
506 | * This function will request gpio, set data direction and request irq | |
507 | * for each gpio in the array. | |
508 | */ | |
509 | int snd_soc_jack_add_gpiods(struct device *gpiod_dev, | |
510 | struct snd_soc_jack *jack, | |
511 | int count, struct snd_soc_jack_gpio *gpios) | |
512 | { | |
513 | int i; | |
514 | ||
515 | for (i = 0; i < count; i++) | |
516 | gpios[i].gpiod_dev = gpiod_dev; | |
517 | ||
518 | return snd_soc_jack_add_gpios(jack, count, gpios); | |
519 | } | |
520 | EXPORT_SYMBOL_GPL(snd_soc_jack_add_gpiods); | |
521 | ||
ec67624d LCM |
522 | /** |
523 | * snd_soc_jack_free_gpios - Release GPIO pins' resources of an ASoC jack | |
524 | * | |
525 | * @jack: ASoC jack | |
526 | * @count: number of pins | |
527 | * @gpios: array of gpio pins | |
528 | * | |
529 | * Release gpio and irq resources for gpio pins associated with an ASoC jack. | |
530 | */ | |
531 | void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, | |
532 | struct snd_soc_jack_gpio *gpios) | |
533 | { | |
bd29ae96 TI |
534 | jack_free_gpios(jack, count, gpios); |
535 | devres_destroy(jack->card->dev, jack_devres_free_gpios, NULL, NULL); | |
ec67624d LCM |
536 | } |
537 | EXPORT_SYMBOL_GPL(snd_soc_jack_free_gpios); | |
538 | #endif /* CONFIG_GPIOLIB */ |