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74ba9207e1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// 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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