linux/drivers/extcon/extcon-adc-jack.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * drivers/extcon/extcon-adc-jack.c
 *
 * Analog Jack extcon driver with ADC-based detection capability.
 *
 * Copyright (C) 2016 Samsung Electronics
 * Chanwoo Choi <[email protected]>
 *
 * Copyright (C) 2012 Samsung Electronics
 * MyungJoo Ham <[email protected]>
 *
 * Modified for calling to IIO to get adc by <[email protected]>
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/iio/consumer.h>
#include <linux/extcon/extcon-adc-jack.h>
#include <linux/extcon-provider.h>

/**
 * struct adc_jack_data - internal data for adc_jack device driver
 * @dev:		The device structure associated with the adc_jack.
 * @edev:		extcon device.
 * @cable_names:	list of supported cables.
 * @adc_conditions:	list of adc value conditions.
 * @num_conditions:	size of adc_conditions.
 * @irq:		irq number of attach/detach event (0 if not exist).
 * @handling_delay:	interrupt handler will schedule extcon event
 *			handling at handling_delay jiffies.
 * @handler:		extcon event handler called by interrupt handler.
 * @chan:		iio channel being queried.
 * @wakeup_source:	Indicates if the device can wake up the system.
 */
struct adc_jack_data { … };

static void adc_jack_handler(struct work_struct *work)
{ … }

static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
{ … }

static int adc_jack_probe(struct platform_device *pdev)
{ … }

static void adc_jack_remove(struct platform_device *pdev)
{ … }

#ifdef CONFIG_PM_SLEEP
static int adc_jack_suspend(struct device *dev)
{ … }

static int adc_jack_resume(struct device *dev)
{ … }
#endif /* CONFIG_PM_SLEEP */

static SIMPLE_DEV_PM_OPS(adc_jack_pm_ops,
		adc_jack_suspend, adc_jack_resume);

static struct platform_driver adc_jack_driver = …;

module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;