linux/drivers/pps/clients/pps-gpio.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * pps-gpio.c -- PPS client driver using GPIO
 *
 * Copyright (C) 2010 Ricardo Martins <[email protected]>
 * Copyright (C) 2011 James Nuss <[email protected]>
 */

#define PPS_GPIO_NAME …
#define pr_fmt(fmt) …

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/pps_kernel.h>
#include <linux/gpio/consumer.h>
#include <linux/list.h>
#include <linux/property.h>
#include <linux/timer.h>
#include <linux/jiffies.h>

/* Info for each registered platform device */
struct pps_gpio_device_data { … };

/*
 * Report the PPS event
 */

static irqreturn_t pps_gpio_irq_handler(int irq, void *data)
{ … }

/* This function will only be called when an ECHO GPIO is defined */
static void pps_gpio_echo(struct pps_device *pps, int event, void *data)
{ … }

/* Timer callback to reset the echo pin to the inactive state */
static void pps_gpio_echo_timer_callback(struct timer_list *t)
{ … }

static int pps_gpio_setup(struct device *dev)
{ … }

static unsigned long
get_irqf_trigger_flags(const struct pps_gpio_device_data *data)
{ … }

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

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

static const struct of_device_id pps_gpio_dt_ids[] = …;
MODULE_DEVICE_TABLE(of, pps_gpio_dt_ids);

static struct platform_driver pps_gpio_driver = …;

module_platform_driver(…) …;
MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_VERSION(…) …;