Initial import

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/pps/sysfs.c b/drivers/pps/sysfs.c
new file mode 100644
index 000000000..aefb75d67
--- /dev/null
+++ b/drivers/pps/sysfs.c
@@ -0,0 +1,113 @@
+/*
+ * 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 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,
+};