| /* |
| * PPS sysfs support |
| * |
| * |
| * Copyright (C) 2007-2009 Rodolfo Giometti <giometti@linux.it> |
| * |
| * 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. |
| */ |
| |
| |
| #include <linux/device.h> |
| #include <linux/module.h> |
| #include <linux/string.h> |
| #include <linux/pps_kernel.h> |
| |
| /* |
| * Attribute functions |
| */ |
| |
| static ssize_t pps_show_assert(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 ssize_t pps_show_clear(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 ssize_t pps_show_mode(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 ssize_t pps_show_echo(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 ssize_t pps_show_name(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 ssize_t pps_show_path(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); |
| } |
| |
| struct device_attribute pps_attrs[] = { |
| __ATTR(assert, S_IRUGO, pps_show_assert, NULL), |
| __ATTR(clear, S_IRUGO, pps_show_clear, NULL), |
| __ATTR(mode, S_IRUGO, pps_show_mode, NULL), |
| __ATTR(echo, S_IRUGO, pps_show_echo, NULL), |
| __ATTR(name, S_IRUGO, pps_show_name, NULL), |
| __ATTR(path, S_IRUGO, pps_show_path, NULL), |
| __ATTR_NULL, |
| }; |