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