1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/pps/generators/sysfs.c b/drivers/pps/generators/sysfs.c
new file mode 100644
index 000000000000..faf8b1c6d202
--- /dev/null
+++ b/drivers/pps/generators/sysfs.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PPS generators sysfs support
+ *
+ * Copyright (C) 2024 Rodolfo Giometti <giometti@enneenne.com>
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/pps_gen_kernel.h>
+
+/*
+ * Attribute functions
+ */
+
+static ssize_t system_show(struct device *dev, struct device_attribute *attr,
+				char *buf)
+{
+	struct pps_gen_device *pps_gen = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", pps_gen->info.use_system_clock);
+}
+static DEVICE_ATTR_RO(system);
+
+static ssize_t time_show(struct device *dev, struct device_attribute *attr,
+				char *buf)
+{
+	struct pps_gen_device *pps_gen = dev_get_drvdata(dev);
+	struct timespec64 time;
+	int ret;
+
+	ret = pps_gen->info.get_time(pps_gen, &time);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%llu %09lu\n", time.tv_sec, time.tv_nsec);
+}
+static DEVICE_ATTR_RO(time);
+
+static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct pps_gen_device *pps_gen = dev_get_drvdata(dev);
+	bool status;
+	int ret;
+
+	ret = kstrtobool(buf, &status);
+	if (ret)
+		return ret;
+
+	ret = pps_gen->info.enable(pps_gen, status);
+	if (ret)
+		return ret;
+	pps_gen->enabled = status;
+
+	return count;
+}
+static DEVICE_ATTR_WO(enable);
+
+static struct attribute *pps_gen_attrs[] = {
+	&dev_attr_enable.attr,
+	&dev_attr_time.attr,
+	&dev_attr_system.attr,
+	NULL,
+};
+
+static const struct attribute_group pps_gen_group = {
+	.attrs = pps_gen_attrs,
+};
+
+const struct attribute_group *pps_gen_groups[] = {
+	&pps_gen_group,
+	NULL,
+};