}
static DEVICE_ATTR_RO(clock_status_offset);
+static ssize_t
+tod_correction_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ u32 val;
+ int res;
+
+ val = ioread32(&bp->tod->adj_sec);
+ res = (val & ~INT_MAX) ? -1 : 1;
+ res *= (val & INT_MAX);
+ return sysfs_emit(buf, "%d\n", res);
+}
+
+static ssize_t
+tod_correction_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ unsigned long flags;
+ int err, res;
+ u32 val = 0;
+
+ err = kstrtos32(buf, 0, &res);
+ if (err)
+ return err;
+ if (res < 0) {
+ res *= -1;
+ val |= BIT(31);
+ }
+ val |= res;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ iowrite32(val, &bp->tod->adj_sec);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return count;
+}
+static DEVICE_ATTR_RW(tod_correction);
+
static struct attribute *timecard_attrs[] = {
&dev_attr_serialnum.attr,
&dev_attr_gnss_sync.attr,
&dev_attr_irig_b_mode.attr,
&dev_attr_utc_tai_offset.attr,
&dev_attr_ts_window_adjust.attr,
+ &dev_attr_tod_correction.attr,
NULL,
};
ATTRIBUTE_GROUPS(timecard);