linux/drivers/ptp/ptp_sysfs.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * PTP 1588 clock support - sysfs interface.
 *
 * Copyright (C) 2010 OMICRON electronics GmbH
 * Copyright 2021 NXP
 */
#include <linux/capability.h>
#include <linux/slab.h>

#include "ptp_private.h"

static ssize_t clock_name_show(struct device *dev,
			       struct device_attribute *attr, char *page)
{ … }
static DEVICE_ATTR_RO(clock_name);

static ssize_t max_phase_adjustment_show(struct device *dev,
					 struct device_attribute *attr,
					 char *page)
{ … }
static DEVICE_ATTR_RO(max_phase_adjustment);

#define PTP_SHOW_INT(name, var) …

PTP_SHOW_INT(max_adjustment, max_adj);
PTP_SHOW_INT(n_alarms, n_alarm);
PTP_SHOW_INT(n_external_timestamps, n_ext_ts);
PTP_SHOW_INT(n_periodic_outputs, n_per_out);
PTP_SHOW_INT(n_programmable_pins, n_pins);
PTP_SHOW_INT(pps_available, pps);

static ssize_t extts_enable_store(struct device *dev,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{ … }
static DEVICE_ATTR(extts_enable, 0220, NULL, extts_enable_store);

static ssize_t extts_fifo_show(struct device *dev,
			       struct device_attribute *attr, char *page)
{ … }
static DEVICE_ATTR(fifo, 0444, extts_fifo_show, NULL);

static ssize_t period_store(struct device *dev,
			    struct device_attribute *attr,
			    const char *buf, size_t count)
{ … }
static DEVICE_ATTR(period, 0220, NULL, period_store);

static ssize_t pps_enable_store(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{ … }
static DEVICE_ATTR(pps_enable, 0220, NULL, pps_enable_store);

static int unregister_vclock(struct device *dev, void *data)
{ … }

static ssize_t n_vclocks_show(struct device *dev,
			      struct device_attribute *attr, char *page)
{ … }

static ssize_t n_vclocks_store(struct device *dev,
			       struct device_attribute *attr,
			       const char *buf, size_t count)
{ … }
static DEVICE_ATTR_RW(n_vclocks);

static ssize_t max_vclocks_show(struct device *dev,
				struct device_attribute *attr, char *page)
{ … }

static ssize_t max_vclocks_store(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{ … }
static DEVICE_ATTR_RW(max_vclocks);

static struct attribute *ptp_attrs[] = …;

static umode_t ptp_is_attribute_visible(struct kobject *kobj,
					struct attribute *attr, int n)
{ … }

static const struct attribute_group ptp_group = …;

const struct attribute_group *ptp_groups[] = …;

static int ptp_pin_name2index(struct ptp_clock *ptp, const char *name)
{ … }

static ssize_t ptp_pin_show(struct device *dev, struct device_attribute *attr,
			    char *page)
{ … }

static ssize_t ptp_pin_store(struct device *dev, struct device_attribute *attr,
			     const char *buf, size_t count)
{ … }

int ptp_populate_pin_groups(struct ptp_clock *ptp)
{ … }

void ptp_cleanup_pin_groups(struct ptp_clock *ptp)
{ … }