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113 lines
2.8 KiB
113 lines
2.8 KiB
/* |
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* PPS sysfs support |
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* |
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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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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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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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