1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-jack.c  --  ALSA SoC jack handling
27  * snd_soc_jack_report - Report the current status for a jack
34  * DAPM pins will be enabled or disabled as appropriate and DAPM
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()
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
137  * @count: Number of pins
138  * @pins:  Array of pins
140  * After this function has been called the DAPM pins specified in the
141  * pins array will have their status updated to reflect the current
145 			  struct snd_soc_jack_pin *pins)  in snd_soc_jack_add_pins()  argument
150 		if (!pins[i].pin) {  in snd_soc_jack_add_pins()
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()
155 		if (!pins[i].mask) {  in snd_soc_jack_add_pins()
156 			dev_err(jack->card->dev, "ASoC: No mask for pin %d"  in snd_soc_jack_add_pins()
157 				" (%s)\n", i, pins[i].pin);  in snd_soc_jack_add_pins()
158 			return -EINVAL;  in snd_soc_jack_add_pins()
161 		INIT_LIST_HEAD(&pins[i].list);  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()
168 	 * card has an opportunity to associate pins.  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()
218 	enable = gpiod_get_value_cansleep(gpio->desc);  in snd_soc_jack_gpio_detect()
219 	if (gpio->invert)  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()
234 static irqreturn_t gpio_handler(int irq, void *data)  in gpio_handler()  argument
236 	struct snd_soc_jack_gpio *gpio = data;  in gpio_handler()
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()
260 				    unsigned long action, void *data)  in snd_soc_jack_pm_notifier()  argument
273 		queue_delayed_work(system_power_efficient_wq, &gpio->work, 0);  in snd_soc_jack_pm_notifier()
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
306  * @count: number of pins
307  * @gpios: array of gpio pins
309  * This function will request gpio, set data direction and request irq
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()
327 			dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
329 			ret = -EINVAL;  in snd_soc_jack_add_gpios()
351 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
354 				ret = -EINVAL;  in snd_soc_jack_add_gpios()
381 				dev_err(jack->card->dev,  in snd_soc_jack_add_gpios()
401 	devres_add(jack->card->dev, tbl);  in snd_soc_jack_add_gpios()
415  * snd_soc_jack_add_gpiods - Associate GPIO descriptor pins with an ASoC jack
419  * @count:     number of pins
420  * @gpios:     array of gpio pins
422  * This function will request gpio, set data direction and request irq
439  * snd_soc_jack_free_gpios - Release GPIO pins' resources of an ASoC jack
442  * @count: number of pins
443  * @gpios: array of gpio pins
445  * Release gpio and irq resources for gpio pins associated with an ASoC jack.
451 	devres_destroy(jack->card->dev, jack_devres_free_gpios, NULL, NULL);  in snd_soc_jack_free_gpios()