1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-jack.c  --  ALSA SoC jack handling
23 	struct snd_soc_jack_gpio *gpios;  member
27  * snd_soc_jack_report - Report the current status for a jack
45 	int enable;  in snd_soc_jack_report()  local
51 	dapm = &jack->card->dapm;  in snd_soc_jack_report()
53 	mutex_lock(&jack->mutex);  in snd_soc_jack_report()
55 	jack->status &= ~mask;  in snd_soc_jack_report()
56 	jack->status |= status & mask;  in snd_soc_jack_report()
60 	list_for_each_entry(pin, &jack->pins, list) {  in snd_soc_jack_report()
61 		enable = pin->mask & jack->status;  in snd_soc_jack_report()
63 		if (pin->invert)  in snd_soc_jack_report()
64 			enable = !enable;  in snd_soc_jack_report()
66 		if (enable)  in snd_soc_jack_report()
67 			snd_soc_dapm_enable_pin(dapm, pin->pin);  in snd_soc_jack_report()
69 			snd_soc_dapm_disable_pin(dapm, pin->pin);  in snd_soc_jack_report()
76 	blocking_notifier_call_chain(&jack->notifier, jack->status, jack);  in snd_soc_jack_report()
81 	snd_jack_report(jack->jack, jack->status);  in snd_soc_jack_report()
83 	mutex_unlock(&jack->mutex);  in snd_soc_jack_report()
88  * snd_soc_jack_add_zones - Associate voltage zones with jack
104 		list_add(&(zones[i].list), &jack->jack_zones);  in snd_soc_jack_add_zones()
111  * snd_soc_jack_get_type - Based on the mic bias value, this function returns
124 	list_for_each_entry(zone, &jack->jack_zones, list) {  in snd_soc_jack_get_type()
125 		if (micbias_voltage >= zone->min_mv &&  in snd_soc_jack_get_type()
126 			micbias_voltage < zone->max_mv)  in snd_soc_jack_get_type()
127 				return zone->jack_type;  in snd_soc_jack_get_type()
134  * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack
151 			dev_err(jack->card->dev, "ASoC: No name for pin %d\n",  in snd_soc_jack_add_pins()
153 			return -EINVAL;  in snd_soc_jack_add_pins()
156 			dev_err(jack->card->dev, "ASoC: No mask for pin %d"  in snd_soc_jack_add_pins()
158 			return -EINVAL;  in snd_soc_jack_add_pins()
162 		list_add(&(pins[i].list), &jack->pins);  in snd_soc_jack_add_pins()
163 		snd_jack_add_new_kctl(jack->jack, pins[i].pin, pins[i].mask);  in snd_soc_jack_add_pins()
177  * snd_soc_jack_notifier_register - Register a notifier for jack status
191 	blocking_notifier_chain_register(&jack->notifier, nb);  in snd_soc_jack_notifier_register()
196  * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status
206 	blocking_notifier_chain_unregister(&jack->notifier, nb);  in snd_soc_jack_notifier_unregister()
214 	struct snd_soc_jack *jack = gpio->jack;  in snd_soc_jack_gpio_detect()
215 	int enable;  in snd_soc_jack_gpio_detect()  local
218 	enable = gpiod_get_value_cansleep(gpio->desc);  in snd_soc_jack_gpio_detect()
219 	if (gpio->invert)  in snd_soc_jack_gpio_detect()
220 		enable = !enable;  in snd_soc_jack_gpio_detect()
222 	if (enable)  in snd_soc_jack_gpio_detect()
223 		report = gpio->report;  in snd_soc_jack_gpio_detect()
227 	if (gpio->jack_status_check)  in snd_soc_jack_gpio_detect()
228 		report = gpio->jack_status_check(gpio->data);  in snd_soc_jack_gpio_detect()
230 	snd_soc_jack_report(jack, report, gpio->report);  in snd_soc_jack_gpio_detect()
237 	struct device *dev = gpio->jack->card->dev;  in gpio_handler()
239 	trace_snd_soc_jack_irq(gpio->name);  in gpio_handler()
242 		pm_wakeup_event(dev, gpio->debounce_time + 50);  in gpio_handler()
244 	queue_delayed_work(system_power_efficient_wq, &gpio->work,  in gpio_handler()
245 			      msecs_to_jiffies(gpio->debounce_time));  in gpio_handler()
273 		queue_delayed_work(system_power_efficient_wq, &gpio->work, 0);  in snd_soc_jack_pm_notifier()
281 			    struct snd_soc_jack_gpio *gpios)  in jack_free_gpios()  argument
286 		gpiod_unexport(gpios[i].desc);  in jack_free_gpios()
287 		unregister_pm_notifier(&gpios[i].pm_notifier);  in jack_free_gpios()
288 		free_irq(gpiod_to_irq(gpios[i].desc), &gpios[i]);  in jack_free_gpios()
289 		cancel_delayed_work_sync(&gpios[i].work);  in jack_free_gpios()
290 		gpiod_put(gpios[i].desc);  in jack_free_gpios()
291 		gpios[i].jack = NULL;  in jack_free_gpios()
299 	jack_free_gpios(tbl->jack, tbl->count, tbl->gpios);  in jack_devres_free_gpios()
303  * snd_soc_jack_add_gpios - Associate GPIO pins with an ASoC jack
307  * @gpios: array of gpio pins
313 			struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_add_gpios()  argument
320 		return -ENOMEM;  in snd_soc_jack_add_gpios()
321 	tbl->jack = jack;  in snd_soc_jack_add_gpios()
322 	tbl->count = count;  in snd_soc_jack_add_gpios()
323 	tbl->gpios = gpios;  in snd_soc_jack_add_gpios()
326 		if (!gpios[i].name) {  in snd_soc_jack_add_gpios()
327 			dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
329 			ret = -EINVAL;  in snd_soc_jack_add_gpios()
333 		if (gpios[i].desc) {  in snd_soc_jack_add_gpios()
336 		} else if (gpios[i].gpiod_dev) {  in snd_soc_jack_add_gpios()
338 			gpios[i].desc = gpiod_get_index(gpios[i].gpiod_dev,  in snd_soc_jack_add_gpios()
339 							gpios[i].name,  in snd_soc_jack_add_gpios()
340 							gpios[i].idx, GPIOD_IN);  in snd_soc_jack_add_gpios()
341 			if (IS_ERR(gpios[i].desc)) {  in snd_soc_jack_add_gpios()
342 				ret = PTR_ERR(gpios[i].desc);  in snd_soc_jack_add_gpios()
343 				dev_err(gpios[i].gpiod_dev,  in snd_soc_jack_add_gpios()
350 			if (!gpio_is_valid(gpios[i].gpio)) {  in snd_soc_jack_add_gpios()
351 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
353 					gpios[i].gpio);  in snd_soc_jack_add_gpios()
354 				ret = -EINVAL;  in snd_soc_jack_add_gpios()
358 			ret = gpio_request_one(gpios[i].gpio, GPIOF_IN,  in snd_soc_jack_add_gpios()
359 					       gpios[i].name);  in snd_soc_jack_add_gpios()
363 			gpios[i].desc = gpio_to_desc(gpios[i].gpio);  in snd_soc_jack_add_gpios()
366 		INIT_DELAYED_WORK(&gpios[i].work, gpio_work);  in snd_soc_jack_add_gpios()
367 		gpios[i].jack = jack;  in snd_soc_jack_add_gpios()
369 		ret = request_any_context_irq(gpiod_to_irq(gpios[i].desc),  in snd_soc_jack_add_gpios()
373 					      gpios[i].name,  in snd_soc_jack_add_gpios()
374 					      &gpios[i]);  in snd_soc_jack_add_gpios()
378 		if (gpios[i].wake) {  in snd_soc_jack_add_gpios()
379 			ret = irq_set_irq_wake(gpiod_to_irq(gpios[i].desc), 1);  in snd_soc_jack_add_gpios()
381 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
390 		gpios[i].pm_notifier.notifier_call = snd_soc_jack_pm_notifier;  in snd_soc_jack_add_gpios()
391 		register_pm_notifier(&gpios[i].pm_notifier);  in snd_soc_jack_add_gpios()
394 		gpiod_export(gpios[i].desc, false);  in snd_soc_jack_add_gpios()
397 		schedule_delayed_work(&gpios[i].work,  in snd_soc_jack_add_gpios()
398 				      msecs_to_jiffies(gpios[i].debounce_time));  in snd_soc_jack_add_gpios()
401 	devres_add(jack->card->dev, tbl);  in snd_soc_jack_add_gpios()
405 	gpio_free(gpios[i].gpio);  in snd_soc_jack_add_gpios()
407 	jack_free_gpios(jack, i, gpios);  in snd_soc_jack_add_gpios()
415  * snd_soc_jack_add_gpiods - Associate GPIO descriptor pins with an ASoC jack
420  * @gpios:     array of gpio pins
427 			    int count, struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_add_gpiods()  argument
432 		gpios[i].gpiod_dev = gpiod_dev;  in snd_soc_jack_add_gpiods()
434 	return snd_soc_jack_add_gpios(jack, count, gpios);  in snd_soc_jack_add_gpiods()
439  * snd_soc_jack_free_gpios - Release GPIO pins' resources of an ASoC jack
443  * @gpios: array of gpio pins
448 			struct snd_soc_jack_gpio *gpios)  in snd_soc_jack_free_gpios()  argument
450 	jack_free_gpios(jack, count, gpios);  in snd_soc_jack_free_gpios()
451 	devres_destroy(jack->card->dev, jack_devres_free_gpios, NULL, NULL);  in snd_soc_jack_free_gpios()