100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* PPS sysfs support
|
|
*
|
|
* Copyright (C) 2007-2009 Rodolfo Giometti <giometti@linux.it>
|
|
*/
|
|
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/pps_kernel.h>
|
|
|
|
/*
|
|
* Attribute functions
|
|
*/
|
|
|
|
static ssize_t assert_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
if (!(pps->info.mode & PPS_CAPTUREASSERT))
|
|
return 0;
|
|
|
|
return sprintf(buf, "%lld.%09d#%d\n",
|
|
(long long) pps->assert_tu.sec, pps->assert_tu.nsec,
|
|
pps->assert_sequence);
|
|
}
|
|
static DEVICE_ATTR_RO(assert);
|
|
|
|
static ssize_t clear_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
if (!(pps->info.mode & PPS_CAPTURECLEAR))
|
|
return 0;
|
|
|
|
return sprintf(buf, "%lld.%09d#%d\n",
|
|
(long long) pps->clear_tu.sec, pps->clear_tu.nsec,
|
|
pps->clear_sequence);
|
|
}
|
|
static DEVICE_ATTR_RO(clear);
|
|
|
|
static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%4x\n", pps->info.mode);
|
|
}
|
|
static DEVICE_ATTR_RO(mode);
|
|
|
|
static ssize_t echo_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%d\n", !!pps->info.echo);
|
|
}
|
|
static DEVICE_ATTR_RO(echo);
|
|
|
|
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%s\n", pps->info.name);
|
|
}
|
|
static DEVICE_ATTR_RO(name);
|
|
|
|
static ssize_t path_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct pps_device *pps = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%s\n", pps->info.path);
|
|
}
|
|
static DEVICE_ATTR_RO(path);
|
|
|
|
static struct attribute *pps_attrs[] = {
|
|
&dev_attr_assert.attr,
|
|
&dev_attr_clear.attr,
|
|
&dev_attr_mode.attr,
|
|
&dev_attr_echo.attr,
|
|
&dev_attr_name.attr,
|
|
&dev_attr_path.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group pps_group = {
|
|
.attrs = pps_attrs,
|
|
};
|
|
|
|
const struct attribute_group *pps_groups[] = {
|
|
&pps_group,
|
|
NULL,
|
|
};
|