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Release 4.7 sound/soc/soc-jack.c

Directory: sound/soc
/*
 * soc-jack.c  --  ALSA SoC jack handling
 *
 * Copyright 2008 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 */

#include <sound/jack.h>
#include <sound/soc.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/export.h>
#include <trace/events/asoc.h>

/**
 * snd_soc_card_jack_new - Create a new jack
 * @card:  ASoC card
 * @id:    an identifying string for this jack
 * @type:  a bitmask of enum snd_jack_type values that can be detected by
 *         this jack
 * @jack:  structure to use for the jack
 * @pins:  Array of jack pins to be added to the jack or NULL
 * @num_pins: Number of elements in the @pins array
 *
 * Creates a new jack object.
 *
 * Returns zero if successful, or a negative error code on failure.
 * On success jack will be initialised.
 */

int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type, struct snd_soc_jack *jack, struct snd_soc_jack_pin *pins, unsigned int num_pins) { int ret; mutex_init(&jack->mutex); jack->card = card; INIT_LIST_HEAD(&jack->pins); INIT_LIST_HEAD(&jack->jack_zones); BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier); ret = snd_jack_new(card->snd_card, id, type, &jack->jack, false, false); if (ret) return ret; if (num_pins) return snd_soc_jack_add_pins(jack, num_pins, pins); return 0; }

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vinod koulvinod koul86.72%114.29%
jie yangjie yang43.36%114.29%
liam girdwoodliam girdwood21.68%114.29%
Total119100.00%7100.00%

EXPORT_SYMBOL_GPL(snd_soc_card_jack_new); /** * snd_soc_jack_report - Report the current status for a jack * * @jack: the jack * @status: a bitmask of enum snd_jack_type values that are currently detected. * @mask: a bitmask of enum snd_jack_type values that being reported. * * If configured using snd_soc_jack_add_pins() then the associated * DAPM pins will be enabled or disabled as appropriate and DAPM * synchronised. * * Note: This function uses mutexes and should be called from a * context which can sleep (such as a workqueue). */
void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) { struct snd_soc_dapm_context *dapm; struct snd_soc_jack_pin *pin; unsigned int sync = 0; int enable; trace_snd_soc_jack_report(jack, mask, status); if (!jack) return; dapm = &jack->card->dapm; mutex_lock(&jack->mutex); jack->status &= ~mask; jack->status |= status & mask; trace_snd_soc_jack_notify(jack, status); list_for_each_entry(pin, &jack->pins, list) { enable = pin->mask & jack->status; if (pin->invert) enable = !enable; if (enable) snd_soc_dapm_enable_pin(dapm, pin->pin); else snd_soc_dapm_disable_pin(dapm, pin->pin); /* we need to sync for this case only */ sync = 1; } /* Report before the DAPM sync to help users updating micbias status */ blocking_notifier_call_chain(&jack->notifier, jack->status, jack); if (sync) snd_soc_dapm_sync(dapm); snd_jack_report(jack->jack, jack->status); mutex_unlock(&jack->mutex); }

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liam girdwoodliam girdwood147.33%19.09%
janusz krzysztofikjanusz krzysztofik42.09%19.09%
lars-peter clausenlars-peter clausen31.57%19.09%
Total191100.00%11100.00%

EXPORT_SYMBOL_GPL(snd_soc_jack_report); /** * snd_soc_jack_add_zones - Associate voltage zones with jack * * @jack: ASoC jack * @count: Number of zones * @zones: Array of zones * * After this function has been called the zones specified in the * array will be associated with the jack. */
int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count, struct snd_soc_jack_zone *zones) { int i; for (i = 0; i < count; i++) { INIT_LIST_HEAD(&zones[i].list); list_add(&(zones[i].list), &jack->jack_zones); } return 0; }

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EXPORT_SYMBOL_GPL(snd_soc_jack_add_zones); /** * snd_soc_jack_get_type - Based on the mic bias value, this function returns * the type of jack from the zones declared in the jack type * * @jack: ASoC jack * @micbias_voltage: mic bias voltage at adc channel when jack is plugged in * * Based on the mic bias value passed, this function helps identify * the type of jack from the already declared jack zones */
int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage) { struct snd_soc_jack_zone *zone; list_for_each_entry(zone, &jack->jack_zones, list) { if (micbias_voltage >= zone->min_mv && micbias_voltage < zone->max_mv) return zone->jack_type; } return 0; }

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EXPORT_SYMBOL_GPL(snd_soc_jack_get_type); /** * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack * * @jack: ASoC jack * @count: Number of pins * @pins: Array of pins * * After this function has been called the DAPM pins specified in the * pins array will have their status updated to reflect the current * state of the jack whenever the jack status is updated. */
int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, struct snd_soc_jack_pin *pins) { int i; for (i = 0; i < count; i++) { if (!pins[i].pin) { dev_err(jack->card->dev, "ASoC: No name for pin %d\n", i); return -EINVAL; } if (!pins[i].mask) { dev_err(jack->card->dev, "ASoC: No mask for pin %d" " (%s)\n", i, pins[i].pin); return -EINVAL; } INIT_LIST_HEAD(&pins[i].list); list_add(&(pins[i].list), &jack->pins); snd_jack_add_new_kctl(jack->jack, pins[i].pin, pins[i].mask); } /* Update to reflect the last reported status; canned jack * implementations are likely to set their state before the * card has an opportunity to associate pins. */ snd_soc_jack_report(jack, 0, 0); return 0; }

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liam girdwoodliam girdwood159.09%125.00%
lars-peter clausenlars-peter clausen21.21%125.00%
Total165100.00%4100.00%

EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins); /** * snd_soc_jack_notifier_register - Register a notifier for jack status * * @jack: ASoC jack * @nb: Notifier block to register * * Register for notification of the current status of the jack. Note * that it is not possible to report additional jack events in the * callback from the notifier, this is intended to support * applications such as enabling electrical detection only when a * mechanical detection event has occurred. */
void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, struct notifier_block *nb) { blocking_notifier_chain_register(&jack->notifier, nb); }

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EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_register); /** * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status * * @jack: ASoC jack * @nb: Notifier block to unregister * * Stop notifying for status changes. */
void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, struct notifier_block *nb) { blocking_notifier_chain_unregister(&jack->notifier, nb); }

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EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_unregister); #ifdef CONFIG_GPIOLIB /* gpio detect */
static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio) { struct snd_soc_jack *jack = gpio->jack; int enable; int report; enable = gpiod_get_value_cansleep(gpio->desc); if (gpio->invert) enable = !enable; if (enable) report = gpio->report; else report = 0; if (gpio->jack_status_check) report = gpio->jack_status_check(gpio->data); snd_soc_jack_report(jack, report, gpio->report); }

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xiang xiaoxiang xiao55.62%120.00%
jarkko nikulajarkko nikula22.25%120.00%
mark brownmark brown11.12%120.00%
Total89100.00%5100.00%

/* irq handler for gpio pin */
static irqreturn_t gpio_handler(int irq, void *data) { struct snd_soc_jack_gpio *gpio = data; struct device *dev = gpio->jack->card->dev; trace_snd_soc_jack_irq(gpio->name); if (device_may_wakeup(dev)) pm_wakeup_event(dev, gpio->debounce_time + 50); queue_delayed_work(system_power_efficient_wq, &gpio->work, msecs_to_jiffies(gpio->debounce_time)); return IRQ_HANDLED; }

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/* gpio work */
static void gpio_work(struct work_struct *work) { struct snd_soc_jack_gpio *gpio; gpio = container_of(work, struct snd_soc_jack_gpio, work.work); snd_soc_jack_gpio_detect(gpio); }

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mark brownmark brown25.71%150.00%
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/** * snd_soc_jack_add_gpios - Associate GPIO pins with an ASoC jack * * @jack: ASoC jack * @count: number of pins * @gpios: array of gpio pins * * This function will request gpio, set data direction and request irq * for each gpio in the array. */
int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, struct snd_soc_jack_gpio *gpios) { int i, ret; for (i = 0; i < count; i++) { if (!gpios[i].name) { dev_err(jack->card->dev, "ASoC: No name for gpio at index %d\n", i); ret = -EINVAL; goto undo; } if (gpios[i].desc) { /* Already have a GPIO descriptor. */ goto got_gpio; } else if (gpios[i].gpiod_dev) { /* Get a GPIO descriptor */ gpios[i].desc = gpiod_get_index(gpios[i].gpiod_dev, gpios[i].name, gpios[i].idx, GPIOD_IN); if (IS_ERR(gpios[i].desc)) { ret = PTR_ERR(gpios[i].desc); dev_err(gpios[i].gpiod_dev, "ASoC: Cannot get gpio at index %d: %d", i, ret); goto undo; } } else { /* legacy GPIO number */ if (!gpio_is_valid(gpios[i].gpio)) { dev_err(jack->card->dev, "ASoC: Invalid gpio %d\n", gpios[i].gpio); ret = -EINVAL; goto undo; } ret = gpio_request_one(gpios[i].gpio, GPIOF_IN, gpios[i].name); if (ret) goto undo; gpios[i].desc = gpio_to_desc(gpios[i].gpio); } got_gpio: INIT_DELAYED_WORK(&gpios[i].work, gpio_work); gpios[i].jack = jack; ret = request_any_context_irq(gpiod_to_irq(gpios[i].desc), gpio_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, gpios[i].name, &gpios[i]); if (ret < 0) goto err; if (gpios[i].wake) { ret = irq_set_irq_wake(gpiod_to_irq(gpios[i].desc), 1); if (ret != 0) dev_err(jack->card->dev, "ASoC: Failed to mark GPIO at index %d as wake source: %d\n", i, ret); } /* Expose GPIO value over sysfs for diagnostic purposes */ gpiod_export(gpios[i].desc, false); /* Update initial jack status */ schedule_delayed_work(&gpios[i].work, msecs_to_jiffies(gpios[i].debounce_time)); } return 0; err: gpio_free(gpios[i].gpio); undo: snd_soc_jack_free_gpios(jack, i, gpios); return ret; }

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jarkko nikulajarkko nikula11024.61%212.50%
mark brownmark brown408.95%318.75%
lars-peter clausenlars-peter clausen245.37%212.50%
janusz krzysztofikjanusz krzysztofik204.47%16.25%
dylan reiddylan reid194.25%16.25%
liam girdwoodliam girdwood184.03%16.25%
xiang xiaoxiang xiao132.91%16.25%
alexandre courbotalexandre courbot51.12%16.25%
stephen warrenstephen warren51.12%16.25%
axel linaxel lin20.45%16.25%
thomas gleixnerthomas gleixner10.22%16.25%
Total447100.00%16100.00%

EXPORT_SYMBOL_GPL(snd_soc_jack_add_gpios); /** * snd_soc_jack_add_gpiods - Associate GPIO descriptor pins with an ASoC jack * * @gpiod_dev: GPIO consumer device * @jack: ASoC jack * @count: number of pins * @gpios: array of gpio pins * * This function will request gpio, set data direction and request irq * for each gpio in the array. */
int snd_soc_jack_add_gpiods(struct device *gpiod_dev, struct snd_soc_jack *jack, int count, struct snd_soc_jack_gpio *gpios) { int i; for (i = 0; i < count; i++) gpios[i].gpiod_dev = gpiod_dev; return snd_soc_jack_add_gpios(jack, count, gpios); }

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EXPORT_SYMBOL_GPL(snd_soc_jack_add_gpiods); /** * snd_soc_jack_free_gpios - Release GPIO pins' resources of an ASoC jack * * @jack: ASoC jack * @count: number of pins * @gpios: array of gpio pins * * Release gpio and irq resources for gpio pins associated with an ASoC jack. */
void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, struct snd_soc_jack_gpio *gpios) { int i; for (i = 0; i < count; i++) { gpiod_unexport(gpios[i].desc); free_irq(gpiod_to_irq(gpios[i].desc), &gpios[i]); cancel_delayed_work_sync(&gpios[i].work); gpiod_put(gpios[i].desc); gpios[i].jack = NULL; } }

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misael lopez cruzmisael lopez cruz7073.68%125.00%
mark brownmark brown1111.58%125.00%
janusz krzysztofikjanusz krzysztofik88.42%125.00%
jarkko nikulajarkko nikula66.32%125.00%
Total95100.00%4100.00%

EXPORT_SYMBOL_GPL(snd_soc_jack_free_gpios); #endif /* CONFIG_GPIOLIB */

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misael lopez cruzmisael lopez cruz42327.43%12.70%
jarkko nikulajarkko nikula18512.00%25.41%
vinod koulvinod koul1519.79%25.41%
lars-peter clausenlars-peter clausen744.80%25.41%
liam girdwoodliam girdwood493.18%38.11%
janusz krzysztofikjanusz krzysztofik322.08%12.70%
jie yangjie yang251.62%25.41%
dylan reiddylan reid191.23%12.70%
xiang xiaoxiang xiao181.17%25.41%
joonyoung shimjoonyoung shim120.78%12.70%
alexandre courbotalexandre courbot50.32%12.70%
stephen warrenstephen warren50.32%12.70%
paul gortmakerpaul gortmaker30.19%12.70%
axel linaxel lin20.13%12.70%
masanari iidamasanari iida10.06%12.70%
thomas gleixnerthomas gleixner10.06%12.70%
peter meerwaldpeter meerwald10.06%12.70%
Total1542100.00%37100.00%
Directory: sound/soc
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