1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-jack.c  --  ALSA SoC jack handling
21  * snd_soc_jack_report - Report the current status for a jack
44 	dapm = &jack->card->dapm;  in snd_soc_jack_report()
46 	mutex_lock(&jack->mutex);  in snd_soc_jack_report()
48 	jack->status &= ~mask;  in snd_soc_jack_report()
49 	jack->status |= status & mask;  in snd_soc_jack_report()
53 	list_for_each_entry(pin, &jack->pins, list) {  in snd_soc_jack_report()
54 		int enable = pin->mask & jack->status;  in snd_soc_jack_report()  local
56 		if (pin->invert)  in snd_soc_jack_report()
57 			enable = !enable;  in snd_soc_jack_report()
59 		if (enable)  in snd_soc_jack_report()
60 			snd_soc_dapm_enable_pin(dapm, pin->pin);  in snd_soc_jack_report()
62 			snd_soc_dapm_disable_pin(dapm, pin->pin);  in snd_soc_jack_report()
69 	blocking_notifier_call_chain(&jack->notifier, jack->status, jack);  in snd_soc_jack_report()
74 	snd_jack_report(jack->jack, jack->status);  in snd_soc_jack_report()
76 	mutex_unlock(&jack->mutex);  in snd_soc_jack_report()
81  * snd_soc_jack_add_zones - Associate voltage zones with jack
97 		list_add(&(zones[i].list), &jack->jack_zones);  in snd_soc_jack_add_zones()
104  * snd_soc_jack_get_type - Based on the mic bias value, this function returns
117 	list_for_each_entry(zone, &jack->jack_zones, list) {  in snd_soc_jack_get_type()
118 		if (micbias_voltage >= zone->min_mv &&  in snd_soc_jack_get_type()
119 			micbias_voltage < zone->max_mv)  in snd_soc_jack_get_type()
120 				return zone->jack_type;  in snd_soc_jack_get_type()
127  * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack
144 			dev_err(jack->card->dev, "ASoC: No name for pin %d\n",  in snd_soc_jack_add_pins()
146 			return -EINVAL;  in snd_soc_jack_add_pins()
149 			dev_err(jack->card->dev, "ASoC: No mask for pin %d"  in snd_soc_jack_add_pins()
151 			return -EINVAL;  in snd_soc_jack_add_pins()
155 		list_add(&(pins[i].list), &jack->pins);  in snd_soc_jack_add_pins()
156 		snd_jack_add_new_kctl(jack->jack, pins[i].pin, pins[i].mask);  in snd_soc_jack_add_pins()
170  * snd_soc_jack_notifier_register - Register a notifier for jack status
184 	blocking_notifier_chain_register(&jack->notifier, nb);  in snd_soc_jack_notifier_register()
189  * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status
199 	blocking_notifier_chain_unregister(&jack->notifier, nb);  in snd_soc_jack_notifier_unregister()
207 	struct snd_soc_jack_gpio *gpios;  member
213 	struct snd_soc_jack *jack = gpio->jack;  in snd_soc_jack_gpio_detect()
214 	int enable;  in snd_soc_jack_gpio_detect()  local
217 	enable = gpiod_get_value_cansleep(gpio->desc);  in snd_soc_jack_gpio_detect()
218 	if (gpio->invert)  in snd_soc_jack_gpio_detect()
219 		enable = !enable;  in snd_soc_jack_gpio_detect()
221 	if (enable)  in snd_soc_jack_gpio_detect()
222 		report = gpio->report;  in snd_soc_jack_gpio_detect()
226 	if (gpio->jack_status_check)  in snd_soc_jack_gpio_detect()
227 		report = gpio->jack_status_check(gpio->data);  in snd_soc_jack_gpio_detect()
229 	snd_soc_jack_report(jack, report, gpio->report);  in snd_soc_jack_gpio_detect()
236 	struct device *dev = gpio->jack->card->dev;  in gpio_handler()
238 	trace_snd_soc_jack_irq(gpio->name);  in gpio_handler()
241 		pm_wakeup_event(dev, gpio->debounce_time + 50);  in gpio_handler()
243 	queue_delayed_work(system_power_efficient_wq, &gpio->work,  in gpio_handler()
244 			      msecs_to_jiffies(gpio->debounce_time));  in gpio_handler()
272 		queue_delayed_work(system_power_efficient_wq, &gpio->work, 0);  in snd_soc_jack_pm_notifier()
280 			    struct snd_soc_jack_gpio *gpios)  in jack_free_gpios()  argument
285 		gpiod_unexport(gpios[i].desc);  in jack_free_gpios()
286 		unregister_pm_notifier(&gpios[i].pm_notifier);  in jack_free_gpios()
287 		free_irq(gpiod_to_irq(gpios[i].desc), &gpios[i]);  in jack_free_gpios()
288 		cancel_delayed_work_sync(&gpios[i].work);  in jack_free_gpios()
289 		gpiod_put(gpios[i].desc);  in jack_free_gpios()
290 		gpios[i].jack = NULL;  in jack_free_gpios()
298 	jack_free_gpios(tbl->jack, tbl->count, tbl->gpios);  in jack_devres_free_gpios()
302  * snd_soc_jack_add_gpios - Associate GPIO pins with an ASoC jack
306  * @gpios: array of gpio pins
312 			struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_add_gpios()  argument
319 		return -ENOMEM;  in snd_soc_jack_add_gpios()
320 	tbl->jack = jack;  in snd_soc_jack_add_gpios()
321 	tbl->count = count;  in snd_soc_jack_add_gpios()
322 	tbl->gpios = gpios;  in snd_soc_jack_add_gpios()
325 		if (!gpios[i].name) {  in snd_soc_jack_add_gpios()
326 			dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
328 			ret = -EINVAL;  in snd_soc_jack_add_gpios()
332 		if (gpios[i].desc) {  in snd_soc_jack_add_gpios()
335 		} else if (gpios[i].gpiod_dev) {  in snd_soc_jack_add_gpios()
337 			gpios[i].desc = gpiod_get_index(gpios[i].gpiod_dev,  in snd_soc_jack_add_gpios()
338 							gpios[i].name,  in snd_soc_jack_add_gpios()
339 							gpios[i].idx, GPIOD_IN);  in snd_soc_jack_add_gpios()
340 			if (IS_ERR(gpios[i].desc)) {  in snd_soc_jack_add_gpios()
341 				ret = PTR_ERR(gpios[i].desc);  in snd_soc_jack_add_gpios()
342 				dev_err(gpios[i].gpiod_dev,  in snd_soc_jack_add_gpios()
349 			if (!gpio_is_valid(gpios[i].gpio)) {  in snd_soc_jack_add_gpios()
350 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
352 					gpios[i].gpio);  in snd_soc_jack_add_gpios()
353 				ret = -EINVAL;  in snd_soc_jack_add_gpios()
357 			ret = gpio_request_one(gpios[i].gpio, GPIOF_IN,  in snd_soc_jack_add_gpios()
358 					       gpios[i].name);  in snd_soc_jack_add_gpios()
362 			gpios[i].desc = gpio_to_desc(gpios[i].gpio);  in snd_soc_jack_add_gpios()
365 		INIT_DELAYED_WORK(&gpios[i].work, gpio_work);  in snd_soc_jack_add_gpios()
366 		gpios[i].jack = jack;  in snd_soc_jack_add_gpios()
368 		ret = request_any_context_irq(gpiod_to_irq(gpios[i].desc),  in snd_soc_jack_add_gpios()
372 					      gpios[i].name,  in snd_soc_jack_add_gpios()
373 					      &gpios[i]);  in snd_soc_jack_add_gpios()
377 		if (gpios[i].wake) {  in snd_soc_jack_add_gpios()
378 			ret = irq_set_irq_wake(gpiod_to_irq(gpios[i].desc), 1);  in snd_soc_jack_add_gpios()
380 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
389 		gpios[i].pm_notifier.notifier_call = snd_soc_jack_pm_notifier;  in snd_soc_jack_add_gpios()
390 		register_pm_notifier(&gpios[i].pm_notifier);  in snd_soc_jack_add_gpios()
393 		gpiod_export(gpios[i].desc, false);  in snd_soc_jack_add_gpios()
396 		schedule_delayed_work(&gpios[i].work,  in snd_soc_jack_add_gpios()
397 				      msecs_to_jiffies(gpios[i].debounce_time));  in snd_soc_jack_add_gpios()
400 	devres_add(jack->card->dev, tbl);  in snd_soc_jack_add_gpios()
404 	gpio_free(gpios[i].gpio);  in snd_soc_jack_add_gpios()
406 	jack_free_gpios(jack, i, gpios);  in snd_soc_jack_add_gpios()
414  * snd_soc_jack_add_gpiods - Associate GPIO descriptor pins with an ASoC jack
419  * @gpios:     array of gpio pins
426 			    int count, struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_add_gpiods()  argument
431 		gpios[i].gpiod_dev = gpiod_dev;  in snd_soc_jack_add_gpiods()
433 	return snd_soc_jack_add_gpios(jack, count, gpios);  in snd_soc_jack_add_gpiods()
438  * snd_soc_jack_free_gpios - Release GPIO pins' resources of an ASoC jack
442  * @gpios: array of gpio pins
447 			struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_free_gpios()  argument
449 	jack_free_gpios(jack, count, gpios);  in snd_soc_jack_free_gpios()
450 	devres_destroy(jack->card->dev, jack_devres_free_gpios, NULL, NULL);  in snd_soc_jack_free_gpios()